Cancer Cell Lines - EPDF.TIPS

HUMAN CELL CULTURE

Volume II: Cancer Cell Lines Part 2

Human Cell Culture Volume 2

The titles published in this series are listed at the end of this volume.

Human Cell Culture Volume II Cancer Cell Lines Part 2 edited by

John R.W. Masters University College London, 67 Riding House Street, London, UK

and

Bernhard Palsson Dept. of Bioengineering, University of California San Diego, USA

KLUWER ACADEMIC PUBLISHERS NEW YORK / BOSTON / DORDRECHT / LONDON / MOSCOW

eBook ISBN: Print ISBN:

0-306-46861-1 0-793-35878-3

©2002 Kluwer Academic Publishers New York, Boston, Dordrecht, London, Moscow

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Contents

Foreword to the Series

vii

Introduction

ix

Chapter 17 Ovarian Cancer ANNE P. WILSON AND CHRIS M. GARNER

1

Chapter 18 Cervical Cancer SWEE Y. SHARP AND LLOYD R. KELLAND

55

Chapter 19 Endometrial Cancer P.G. SATYASWAROOP

71

Chapter 20 Breast Cancer ROBERT L. SUTHERLAND, COLIN K.W. WATTS, CHRISTINE S.L. LEE AND ELIZABETH A. MUSGROVE

79

Chapter 21 Paired Breast Cancer Cell Lines IGNACIO I. WISTUBA, ARVIND K. VIRMANI AND ADI F. GAZDAR

107

Chapter 22 Ovarian Germ Cell Tumors MASUMI SAWADA AND TSUNEHARU MIKI

121

Chapter 23 Testicular Germ Cell Tumors MARTIN F. PERA

127

Chapter 24

Choriocarcinoma VADIVEL GANAPATHY, PUTTUR D. PRASAD AND FREDERICK H. LEIBACH

Chapter 25 Thymomas and Thymic Cancers H.K. MÜLLER-HERMELINK AND ALEXANDER MARX v

141

149

vi

Contents

Chapter 26 Kaposi’s Sarcoma CHRISTOPHER BOSHOFF

157

Chapter 27 Brain Tumors FRANCIS ALI-OSMAN

167

Chapter 28 Head and Neck Cancers CHRISTOPER D. LANSFORD, REIDAR GRENMAN, HENNING BIER, KENNETH D. SOMERS, SANG YOON KIM, THERESA L. WHITESIDE, GARY L. CLAYMAN, HANS-J WELKOBORSKY AND THOMAS E. CAREY

185

Chapter 29 Gastric Cancer TOSHIMITSU SUZUKI

257 AND

MORIMASA SEKIGUCHI

Chapter 30 Colorectal Cancer MICHAEL G. BRATTAIN, J.K.V. WILLSON, A. KOTERBA, S. PATIL AND S. VENKATESWARLU

293

Chapter 31 Prostate Cancer JAMES M. KOZLOWSKI AND JULIA A. SENSIBAR

305

Chapter 32 Liver Cancer MASAYOSHI NAMBA, MASAHIRO MIYAZAKI AND KENICHI FUKAYA

333

Chapter 33 Wilms’ Tumor and Other Childhood Renal Neoplasms NOEL A. BROWNLEE, GIAN G. RE AND DEBRA J. HAZEN-MARTIN

345

Chapter 34 Retinoblastoma BRENDA L. GALLIE, JUDY TROGADIS

361

Contents of Volume I

AND

LIPING HAN 375

Foreword to the Series This series of volumes is in celebration of Human Cell Culture. Our ability to grow nearly every type of normal and diseased human cell in vitro and reconstruct tissues in 3 dimensions has provided the model systems on which much of our understanding of human cell biology and pathology is based. In future, human cell cultures will provide the tools for tissue engineering, gene therapy and the understanding of protein function. The chapters in these volumes are written by leading experts in each field to provide a resource for everyone who works with human cells in the laboratory. John Masters and Bernhard Palsson

vii

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Introduction Continuous cell lines derived from human cancers are the most widely used resource in laboratory-based cancer research. The first 3 volumes of this series on Human Cell Culture are devoted to these cancer cell lines. The chapters in these first 3 volumes have a common aim. Their purpose is to address 3 questions of fundamental importance to the relevance of human cancer cell lines as model systems of each type of cancer: 1. Do the cell lines available accurately represent the clinical presentation? 2. Do the cell lines accurately represent the histopathology of the original tumors? 3. Do the cell lines accurately represent the molecular genetics of this type of cancer? The cancer cell lines available are derived, in most cases, from the more aggressive and advanced cancers. There are few cell lines derived from low grade organ-confined cancers. This gap can be filled with conditionally immortalized human cancer cell lines. We do not know why the success rate for establishing cell lines is so low for some types of cancer and so high for others. The histopathology of the tumor of origin and the extent to which the derived cell line retains the differentiated features of that tumor are critical. The concept that a single cell line derived from a tumor at a particular site is representative of tumors at that site is naïve and misleading. It is essential that representative cell lines are selected for study, and it is hoped that the chapters in these volumes will help appropriate selections to be made. The data on the molecular genetics of cancer cell lines has been difficult to gather as it is widely distributed throughout the literature and in a stage of transition. We do not yet know the identity of many of the altered genes for each type of cancer, or what their individual roles are in the progression of the disease. Despite being an essential resource for much of cancer research, established cell lines are associated with problems that are often ignored, but which can invalidate the work. The most important problems are cross-

ix

x

Introduction

contamination between cells of either the same or different species, and contamination with microorganisms (usually Mycoplasma). Both crosscontamination and the presence of Mycoplasma are easily checked by PCRbased methods. Many cell lines are cross-contaminated with other human or animal cell lines. Despite the fact that cell lines called Chang liver, KB and Hep-2 are known to be HeLa, authors often fail to acknowledge the fact. HeLa is just the tip of the iceberg of cell line cross-contamination. For most cell lines there is no proof of origin from a particular individual or tumor by a reliable method (DNA profiling is recommended). Mycoplasma contamination is a widespread and recurring problem. Laboratories that do not test for Mycoplasma contamination often have it, and consequently allow it to spread unchecked. How many putative novel human cancer-associated proteins are derived from Mycoplasma ? Many human cancer cell lines are easy to grow and maintain. With simple precautions and good practice they can provide models that are representative of almost every type of clinically advanced human cancer. Many more cell lines are needed to represent low grade, clinically localized cancer.

Chapter 17

Ovarian Cancer Anne P. Wilson and Chris M. Garner Oncology Research Laboratory, Derby City General Hospital, Uttoxeter Road, Derby DE22 3NE, UK. Tel: 01332-340131, ext 5267

1.

INTRODUCTION

The incidence of ovarian cancer worldwide ranges from 1 per 100,000 in Mali to 17 per 100,000 in France (1). It has the highest fatality amongst gynecological cancers and continues to be a significant problem because of the resistance of relapsed disease. Within the common epithelial cancers of the ovary, there are four main histological subtypes (serous, mucinous, endometrioid, clear cell), four levels of differentiation (well, moderate, poor, anaplastic), four Figo stages (I – confined to ovaries; II – confined to pelvis; III – confined to abdomen; IV – spread beyond abdomen) and a borderline category which carries an excellent prognosis but can be lethal in some cases. The comparatively low incidence of the tumor together with the huge variation in disease characteristics is a stumbling block to clinical progress. The wellcharacterised cell lines which reflect this heterogeneity are therefore a valuable commodity for research. Early attempts to culture ovarian adenocarcinomas have been reviewed (2,3). These studies employed the plasma clot technique and reported some success with outgrowth of epithelial cells using medium supplemented with 50% ascitic and pleural fluid together with a balanced salt solution further supplemented with embryo extract. Attempts to culture ovarian tumor cells increased in the 1960s and paralleled the introduction of anticancer drugs. Success with predictive testing for bacterial sensitivity to antibiotics encouraged the hope that a similar approach could be used for individualising cancer treatment. At this time, the first reports were also appearing of correlations between in vitro drug sensitivity testing results on primary cultures from surgical specimens and clinical response to the drugs

J.R.W. Masters and B. Palsson (eds.), Human Cell Culture Vol. II, 1–53. © 1999 Kluwer Academic Publishers. Printed in Great Britain.

2

Wilson and Garner

(4,5). Further extensive reports on tissue culture and ultrastructural characteristics of cultured ovarian carcinoma cells appeared in the 1970s (6,7) and the first reports of continuous cell lines derived from ovarian adenocarcinomas also appeared about this time, and included cell lines 154 and 163 (8) and also an unnamed cell line from “embryonal carcinoma of the ovarium” (9). In the last twenty years, the number of cell lines has increased dramatically and the literature now contains reports on more than 200. The lines are used extensively as models for human ovarian cancer in ways that reflect the clinical problems presented by the disease. Uses include identification of mechanisms of drug resistance, identification and development of new drugs, analysis of oncogene/tumor suppressor gene expression, development of models for adhesion and metastasis and studies on the control of proliferation via peptide growth factors, cytokines and hormones.

2.

METHODS

The success rate for establishing ovarian tumor cell lines from clinical specimens varies from pter),t(1p:13q).14q+.15q-.der(17) Range 60-135,no mode Mode 60–64. Mode 46. T(1:?)(p21:?).t(1;3)(p21->qter:p12->pter).?iso(3p).3p21-.3p-q+.6q24-.14q+ . DM Range 54-66, mode 62 Mode 60. T(1:3)(p21->qter;p12->pter).6q24-.inv(7)(p15),13p+.der(4).13p+ .13p+ .13p+ .13p+.?13p+.?der(17).der(21) Mode 46. XX, 1q-,5p+,5p-,12q-. Homozygous deletion of p16/cdkn2a and p15/mts2. WT ras Investigated for deletion of chromosome 11p13-11p15.5 Investigated for deletion of chromosome 11p13-11p15.5 Investigated for deletion of chromosome 11p13-11p15.5 Investigated for deletion of chromosome 11p13-11p15.5 Investigated for deletion of chromosome 11p13-11p15.5 Investigated for deletion of chromosome 11p13-11p15.5 Investigated for deletion of chromosome 11p13-11p15.5 Investigated for deletion of chromosome 11p13-11p15.5 Mode 46. XXX,-4,-13, +derdic(4),t(1:4)(p11:q33),t(14:15),+ mar Modal range 60-63. 6 markers iso(3q),dic(6petr--->6q21::?::8q),unknown isochromosome, t(7p?;9q+[hsr]),iso(21q?),del(6)(p21)

8 8 22 24 24 26 24 27 28 27 27 28 27 31 32 34 34 34 34 34 34 34 34 35 37

Ovarian Cancer

Table 5 Cytogenetic changes

Continued on next page

33

Cell line

34

Table 5 (continued) Genetic changes

Reference 38 35 40 40 40 40 41 42 42 42 42 43 45 45 45 45 45 45 45 45

Continued on next page

Wilson and Garner

CAVEOC-2 Mode 76-78. ,X, + del(2q),+ 3,-4,der(s),del(?)(q31), +9,-11, +der(12)t( 21;?)(q24;?), + (13)x3,-16,-17,+ (20)x3,-21,-22, and 5 markers[cp5] CH1 Mean 45 Mode 72. lp-, 6q+,7p+,11p+,i6p and >30 unidentified markers CI 79-36 CI 80-13A Mode 60. t(1;9)(q11;q12)1q-p+, 6q+,14p+, 15p+, -16,-16,18q+, i21q and 2 indistinct metacentric markers Mode 60. As CI 80-13A but also 4p-, 4q+ and extra small acrocentric marker. No i21q CI80-13S Modes of clonal lines 44,44,65,70,85 and 99. Common abnormalities are t(1;3)(p33;p23),6p+, t(9;21)(p11;p10),7p-, CI81-1 ins(11)(q13) and 3 markers CKS Mode 44, monosomy in 1 and trisomy in 5, no markers.(mode37 [70]) COLO 110 Mode 74.t(1;6)(1qter to cen to 6pter),t(1;?)(1pter to 1 q43::?),del(1)(pter to q22),depl(3)(qter to p13:),del(6)(pter to 25:), t(7;?)(7qter to 7p11::?),t(21;?)(21pter to 21q22;;?) and 1-3 markers COLO 316 Mode 68. Numerous abnormalities with 48 markers COLO 319 Bimodal 67 and 69. Numerous abnormalities with up to 55 markers COLO 330 Mode 57. Numerous abnormalities with 27-38 markers COLO-704 Mode 51, DM, XX, +1, +7, +8, +19, +20, i(1q), der(8)t(8;?)(q21:?) COV318 Mode 74. T(X22)(p11;q11),hsr19q+,t(X22),de1(5)(q11q14),der(9)t(5;9)(p11;p22),11p+( llqter cen4::5q12qter) t(13q21q) t(8q14q),i(11p),i(18p).and other abnormalities COV362.4 Mode 69. T(8;11)(p23;q14),mar1q::11q13::hsr,del(X)(q21)xq+,der(5)t(5;17)(p11;q11),t(13q22q),t(2q8q),i(9q),i(11p),i(21q) and other abnormalities COV413B Mode 38 .-X,del(5)(p12p14),dup(5)(q32 to q35),der(11)t(5;11)(q12;p14),der(13)t(7;13)(q12:p11),t(2q8q) and other abnormalities COV434 Mode 47. +5 and other abnormalities COV434SUBMode 48 COV446B Modes 45/96. Del(X)(q24),i(5p),der(19)t(5;19)(q22;q12),t(13q22q)t(13q15q),i(8q),i(5p),i(7q)i(8q),i(11q),i(21q) and other abnormalities COV504 Mode 64. T(X16)(q26;q21)t(13;17)(q11;p11)or(p11q11),t(X16),5p+,t(13q17q) and other abnormalities COV644 Mode 58.2 large mar with hsr,inv(X),der(1)t(1;5)(p21;q14?),i( 13q) and other abnormalities

Cell line

Genetic changes

Reference

DO-S EF021 EFO27 EFO3 EFO47 ES-2 HeW HEY HMOA HNOA HOC-1 HOC-21 HOC-7 HOC-8 HR HSKTC HTBOA HTOA HTOG HTOT HUOCA-II HUOT HX/62 Ia288 IGROV-1 JA1

59,XX,+4a,+6c,+e,+f,+g. Mode >100 Mode >100 Mode 49 Mode46 66, XX to 88, XX Mode 87 Range 45-113, del(3)(p12:)t(5:?)(5p15;?) Del (6)(q21-23:) i(8q) del(11)(q21:) and 3-5 unidentified markers Mode 46-47.1 marker 2pMode 46-47 Mode 49, inv(3)(p13q23) Mode 46. Mode 50,nv(3)(p13q23)t(11;13)(q13;p13)t(12;19)(q24;q13) Mode 52. Abr 6q. No DM. Mode 68 Modal range 87-96 Mode 65-68. XX,(5p+)x3,6q-,7q-,12p-.12p+,13p+,14p+,21p+ and 9 markers Modal range 95-105 Mode 80. Mode 46. Mode 46 Modal range 52-56.3 markers. Mean 82 Mode 62-66. 6 markers. m1/7q+;m3/3+;m4/11p+;m613p+ 46,XX,inv(3)(p13p25); t(2;5)(q33;q22) Mode 80-86.dm. See [124] for detailed karyotype

46 47 47 47 47 48 51 52 53 53 52 54 52 55 56 57 59 60 61 61 62 63 39 64 65 66

35

Continued on next page

Ovarian Cancer

Table 5 (continued)

Cell line KK Kuramochi MAC-2 MCAS MH MLS/P NZ-OV1 0-129 OAW 138D

36

Table 5 (continued) Genetic changes

Reference 68 70 71 72 68 74 77 78 79 79 79 79 79 79 79 79 85 87

Continued on next page

Wilson and Garner

Mode 67. Mode 50. Mode 45. Peritetraploid Mode 72, 14-19 markers Mean 68. Multiple numerical aberrations and 18 clonal structural aberrations Mode 80. Mode 40. Range 66-72,-X,der(1)t(1;3)(p36;pl4),de1(3)(p13),add(3)(p13),-4,+6, del(6) (q13q23),+add(7)(p13),der(7)t(3;7)(p25;p22),der(11)t(1:11)(p32;p15),-14,-17,-17,-19 + 7-13 markers and other changes OAW 180D Range 83-96,-X,-X,der(1)t(1;11)(p13;q13)add(l)(q42)x2,+t(l;6)(q10;p10),+der(3)t(3;15)(p11;q11),der(6)t(1;6)(p13;q25) +hsr(7)(p11)add(7)(p11)x2,der(7)(q21),-14,der(14)t(3;14)(q21;q24),-17,add(17)(p11),-19, add(19)(q13), and 5-8 markers and other changes OAW 200D Range 63-69,-X,-X,der(X5)(p10;p10),+add(1)(p13),+2, -3,-5,i(6)(p10),add(6)(p11), add(6)(p21),+7, +der(7)t(1;7)(p13;p13)add(1) (p36),-8,add(8) (p11),-10,-12,add(12)(p11),-13,i(13)(q10),14,-15,-16,-18,-18,-19,+add(20)(q13) +21, +22,+der(?)(?;3)(?;q21) and 1-5 markers OAW253D Range 62-66,X,-X,-X, add (3) (q13),add (3)(q29),der(6)t(1;6) (q21;q21), del(11)(p13),add(16)(q24),inc Range 40-46,X,der(X)t(X,3)(q21;p12),-1, -3, del(3)(q21),der(6)t(3;6)(q1&p11), del(7)(q11),add(11)(q23), +add(11)(p15),add(14) OAW 28 (p11),-17,-17,-19, and 7-13 markers and other changes OAW 41M AS OAW 28 OAW 42 Range 79-84,-X, add (1)(p13),add(1)(q21), +del(1)(p31), +add(1)(p32),-3,add (3)(p13),-9,-9,i(9)(p10),-13,-13 der(14)t(5;14)(q15;p13),add(17)(q25),der(17)add(l7)(p11)add(17)(q25), and 3-8 markers and other changes OAW 59M Range 52-54,XX,+X,+6,+i(6)(p10),+i(7)(q10),-8, +add(11)(p13),-13,-13,der(13;14)(q10;q10),-16,-17,-18,add(19)(q13), and 7-9 markers Mode 70-77. XX,-1,+t (1;14),+ (1;14), +del(1)x2, +2+3+4+5x3 +6+7x2+t(7;?), +8p+,-9, +de1(9)x2,+ 10, + 11, + 12, +del(12),+ 13 + 15 OCC1 + 16p+,del( 17), + 19, +20, +21, and 2 markers OMC-3 Mode 43-44.

Genetic changes

Reference

OMC1 OTN 11

Mode 84 Mode 41, XX, -3, -4, -8, -8, -9, -12, -12, -17, -18, -22, + 9 markers. i(3q) OR t(3;12), t(8;?)(q22;?), T(4;18)(p16;q21), t(9;12), t(12;?)(qll;?), Del9q, 17q+, t(4;18) recipr.? Mode 86,3-8 markers Modal range 56-58. DM. Trisomy. Monosomy for X. WT p16/CDKN2a, p15/mts2, and k-ras Modal range 60-70. Markers 1p +q31-,7p +,1 1p+,12q+ ,19q+ ,20q+ ,20p12-q12Mode 57. Abnormalities in chromosome 1. Mode 62. Mode47 Mode 78. 46, XX,+t(15q20q),+t(15p20p),-15-20 inactivation of one X chromosome Aneuploid Aneuploid Mode 41 Aneuploid Aneuploid Aneuploid Mode 41 Mode 41 Mean45 Mode 77 Mode 47. 8 marker chromosomes Hypertriploid Hypodiploid

86 88

OTN 14 OV-1063 OVAS-21 OVCAR-3 OVCCR1 OVISE OK18 OVTOKO PA1 PEA1 PEA2 PEO1 PEO14 PEO16 PEO23 PEO4 PEO6 PXN/94 RIC-2 RMG-I RMG-II RMUG-L RMUG-S

89 91 32 95 96 97 98 97,99 101 102 102 102 102 102 102 102 102 39 71 104 105 106 106

37

Continued on next page

Ovarian Cancer

Table 5 (continued) Cell line

38

Table 5 (continued) Cell line

Genetic changes

RTSG SCHM-1 SHIN-3 SIB-1 SKOV3 SKOV3

Abbreviations: ABR, abnormal banding region; DM, double minutes; HSR, homogeneous staining region; MAR, marker chromosomes

Reference 107 71 109 71 123 124 111 22 125 102 66 66 113 114 115 117 117 117 118 118 118 118 118 118 32

Wilson and Garner

Aneuploid with a tetraploid mode Mode 46 Mode 61.8 trisomies. 6q+11q- and 5 markers Mode 46 Mode 43. Del(1)(q21),der(13)t(1;?;13)(q11;?;q34),der(11)t(11;?)(q12),del(10)(q22) and 3 other markers No mode, Range 69-149. 12 markers reported including del(1) (pter--->q21:),der(l3)t(l:13)(lqter--->lqll::13q34--->13pter) der(11)t(11;?)(11pter---> 11q12::?) Two modes near diploid and near triploid. Range 40-78.der( 1)t(1;17)(p36?;q21.2?)der(6)t(X,6)(q27?;q21?), Der(x)t(x;6) SR8 (q27?;q21?),de1(3)(p13?) Normal neu SRO-82 SW 626 Modal range 83-108.der(2)t(2;5)(q35;q31);de1(8)(q13q22);del(12)(q13);t(9q13q) TO14 Aneuploid TR170 Mode 45-47.dm. See [124] for detailed karyotype TR175 Mode 51.dm. See [124] for detailed karyotype TYKnu Mode 56. Subcentric marker chromosome. UCI 101 Del 6q, abnormalities in chromosome 1 UCI 107 Mode 46. X,der(X)t(X7)(p11;q22),inv dup(1)(q12;q43),t(6;6;11;22)(p21.3;q16;q23.3;q13,3),de~(13)(q14.1) Passage 17 mean 52. 11p+. Passage 57 mean 87 11p+ UWOV1 UWOV2 Mean91. UWOV2Sf Mean 88. YAOVBIX1 Overexpresses neu YAOVBIX3 Does not over-express neu YAOVDK Does not over-express neu YAOVFAB Does not over-express neu YAOVJON Does not over-express neu YAOVWE1 Does not over-express neu Yoshikazi WT p16/CDKN2A, p15/MTS2, and k-ras

39

Ovarian Cancer

summarized to show cell lines with hypodiploid, close to diploid and aneuploid karyotypes (Table 6). Cell lines with specific information relating to oncogene and tumor suppressor gene expression are shown in Table 7. The genetic information is complex because so many structural abnormalities have been identified in ovarian cancer and many of the cell lines are aneuploid with multiple markers, deletions, additions and rearrangements.

Table 6 Modal chromosome numbers* < 46 Hypodiploid

46–50 Close to diploid

CKS COV413B COV446B MAC-2 OAW 28 OTN 11 PEO1 PEO4 PEO6 RMUG-S SKOV3

A69 AMOC-2 BG-1 COV434 EFO3 EFO47 HMOA HNOA HOC 1 HOC 21 HOC 7 HTOT HUOCA-II IGROV-1 Kuramochi OVK18 PA1 RMG-1 SCHM-1 SIB-1 SR8 TR170

*Refer to Table 3 for specific values **Bimodal range reported

>50 Aneup1oid 154 2774 A10 A7 CAOV-4 COLO 110 COLO 319** COV318 COV446B** COV644 EFO21 ES-2 HeW HOC 8 HSKTC HTOA HUOT JA1 KK MH OAW 180D OAW 253D OAW 59M OTN 14 OVCAR-3 OVISE PEA1 PEO14 RIC-2 RTSG SKOV3 SW 626 TR175 UWOV2

163 A1 A121 A90 CAVEOC-2 COLO 316 COLO 330 COV362.4 COV504 DO-S EFO27 GG HEY HR HTBOA HTOG Ia288 JC MCAS OAW 138D OAW 200D OAW 42 OCC1 OV-1063 OVCCR1 OVTOKO PEA2 PEO16 RMUG-L SHIN-3 Sr8** TO14 UWOV1 UWOV2Sf

40

Wilson and Gamer

Table 7 Specific genetic changes Gene p53

k-ras

Cell lines Wild type

A2774, A2780, IGROV-1, PA1 OVCA 420, OVCA 429, OVCA 433 OVMZ6 A2780.AD, EC SKOV3 OVCAR-3

[146, 192, 193] [94] [147] [148] [149] [150]

Mutation

OVCAR-3, OVCAR-5, OVCAR-8, SKOV3, SW 626, OVCA 432 OVMZ11, OVMZ18, OVMZ28, OVMZ32 222, 2774, A2780CP, EC, PM1015, CAOV-3, CAOV-4, Kuramochi, PAI,

[146,192,193] [94] [147] [148] [149]

Wild type

Asano, HAC-2,OVAS-21, RMG-I, Yoshikazi

[32]

Mutation

SHIN-3

[32]

Amplification

HOC-8

[55]

HTOA, KF, Kuramochi, HAC-2, MH, PA1 A1847, A2780,OVCAR-2,OVCAR-3,OVCAR-4, OVCAR -7,OVCAR-8 HAC-2, OVAS-21, Yoshikazi 2774, A2780, SKOV6

[144] [128] [32] [152]

Mutation

MCAS, HOV-7 OVCAR -10

[144] [152] [128]

No transcription

KK

[144]

Homozygous deletion

RMG -I, SKOV, TYKnu OVCAR-5, PEO1, SKOV3 Asano, RMG-I, SHIN-3 27/87, CI 80-13S, PEO1, PEO4, SKOV3

[144] [128] [32] [151]

Wild type

HAC-2, OVAS-21, Yoshikazi

[32]

Homozygous deletion

Asano, SHIN-3

[32]

p16 Wild type (CDKN2A) INK4A

P15 (MTS2)

AKT2

Ref

No amplification A2780,OVCAR-2,OVCAR-4, OVCAR 5,OVCAR -7, OVCAR -10

[153]

(19q13)

Amplification

OVCAR-3,OVCAR- 8

[153]

c-fms

Expression

HEY, SKOV3, YAOVBIX, YAOVDK N1 (subclone of HOC-7) HMG, HRA, KF,KK

[140] [154] [151]

No expression

YAOVWE1

[140] Continued on next page

41

Ovarian Cancer Table 7 (continued) Gene pp60c-src activity

PTPN6

Cell lines

Ref

< 1.0 U/106 cells

OVCAR-4, OVCAR-5, OVCAR-8

[156]

>1.0 U/10 6 cells

IGROV-1 (6.7U), OVCAR-3 (3.3U), SKOV3 (2.2U)

[156]

Normal expression

SKOV3

[157]

Over-expression

CAOV-3, DOV13, OVCA 420, OVCA 429, OVCA 432, OVCA 433,OVCAR-3

[157]

hMSH2

Defective

2774 2008A (cisplatin-resistant subline of 2008)

[23] [194] [196]

hMLH1

Defective

SKOV3 9/10 cisplatin-resistant sublines of A2780, but not parent A2780

[194] [195]

hPMS2

Defective

9/10 cisplatin-resistant sublines of A2780, but not parent A2780

[195]

erbB-2

Normal expression

222,204, CAOV-3, OVCAR-3, PAl, SRO-82 T222, UCI 101, UCI 107, HEY, YAOVBIX3, YAOVDK, YAOVFAB, YAOVJON, YAOVWE1

[22] [112] [118] [118]

Over-expression

194, 436, SKOV3 YAOVBIX1 OVCA 429, OVCA 433, OVCAR-3

[22] [118] [158]

222, A2008, CAOV-3, CAOV-4, OVCAR-3

[23]

2774, PA1, SKOV3, UCI 101

[23]

Genetic Stable instability Unstable

Cell lines shown in italics are not included in Table 1 because there appears to be no published information to support their derivation

The karyotypic abnormalities which have been most frequently reported in surgical specimens from ovarian cancer patients involve chromosomes 1, 3, 6, 9, 10, 11, 12 and 14 (126). In a series of primary ovarian tumors the breakpoints of clonal structural abnormalities clustered to 19p13, 11p13–15, 1q21–23, 1p36, 19q13, 3p12–13 and 6q21–23 (127). Loss of heterozygosity has been reported on chromosomes 9 (128), 17p (129,130), 3p (131), 6 (131,132), 11p (131,133), 11q (134), Xp and 13q(135). Oncogenes which have been implicated in ovarian cancer include ras (136, 137), erbB-2 (138,139) and c-fms (140,141,142) whilst tumor suppressor genes include p53 (129,143) and CDKN2A (32,128,144).

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Microsatellite instability and defects in mismatch repair have been implicated in ovarian cancer, both in tumor progression and in the development of resistance to cisplatin (194). The subunits hMLH1 and hPMS2 of the MutLea mismatch repair protein complex and hMSH2 of the MutS mismatch repair protein complex have been identified as mutation sites in cell lines with resistance to cisplatin and in biopsies of ovarian cancer (194–196).

6.

CROSS-CONTAMINATION

No HeLa contamination has been reported for any of the cell lines. However, there is indication of cross contamination for several cell lines. These include 41M and OAW 28 which were found to share an identical DNA fingerprint. DNA fingerprinting of uncultured material from OAW 28 has confirmed that both lines originate from this patient and cross contamination was an early event in the life history of 41M (79). Phenotypic differences between the cell lines have been reported (39). Results from a recent report describing the use of microsatellite sequencing for cell line identification showed identical allelic profiles at ten different loci for SKOV3, YAOVBIX1 and OC436 (undocumented cell line originating from the ascites of a patient with Meig’s Syndrome, a term used for an association of ascites, hydrothorax and an ovarian tumor, usually a fibroma) (145).

7.

SPECIAL FEATURES

Other relevant features of cell lines which relate to ovarian cancer include hormone receptor status, drug sensitivity and response to peptide growth factors, particularly EGF and TGFß. Some of the published data is summarised in Table 8. The normal ovary differs from other hormonally sensitive tissues in that estrogen receptor (ER) and progesterone receptor (PR) do not appear to be equally distributed and PR expression is more frequent than ER expression (159). Although the reported incidence of ER and PR in ovarian cancer shows some variability, the general concensus is that there is reduced expression of PR and increased expression of ER compared with normal ovary. Several studies have investigated the relationship between ER/PR status, survival, prognostic features and treatment response, but the conclusions are conflicting (159). The role of hormonal therapy is not clear, although a variety of therapeutic approaches have been tested, including medroxyprogesterone acetate and tamoxifen. Some tumors express HCG receptors and inhibitors of gonadotropin-releasing hormone have produced responses in nude mice bearing xenografted ovarian tumor cells (160). Androgen receptors have also

43

Ovarian Cancer Table 8 Response to hormones Hormone system

Cell lines

Findings

Ref

Estrogen receptor

OAW 42 OV 1225, OV 166, OV 2774 PEO16, PEO14, PEO23, TO14 OVCAR-3 PEA1, PEA2

Does not express ER Do not express ER Do not express ER ER expression Express low levels of ER (12-23 fmol/mg protein) Express ER (92-132 fmol/mg protein) Secretes estradiol

[161] [90] [162] [94] [162]

PEO1, PEO4, PEO6 Secretion of estradiol OTN 11

[162] [88]

Androgen receptor

OV 2774, OV 1225 OVCAR-3 OV 166

Does not express AR Expresses AR Expresses AR

[90] [94] [90]

Progesterone receptor

OVCAR-3, OVCAR-4, OVCAR-5, A2780, A1847

All express progesterone receptor and are inhibited by mifepristone

[163]

Secretion of HCG

163

Secretes HCG

[164]

Response to HCG and FSH

EFO3, EFO27, EFO21, EFO47 Only EFO3 and EFO27 respond [47] to HCG. None respond to FSH.

LH-RH mRNA and receptor

EFO21, EFO27

Activin receptor. CAOV-4, SKOV3, SW 626, PA1, ES-2 Secretion of inhibin/activin Secretion of follistatin

Both express LH-RH receptor and secrete LH-RH

[165]

All cell lines express the activin [166] receptor. Only PA1 and ES-2 secrete follistatin. All lines except PA1 secrete aBa or Bb subunits of actin

Abbreviations: ER, estrogen receptor; AR, androgen receptor; HCG, human chorionic gonadotropin; FSH, follicle stimulating hormone, LH-RH, luteinising hormone releasing hormone

been detected. The approaches which have been used to study features relating to hormone responsiveness are heterogeneous, but there is published data on a number of cell lines. The response to hormones is summarised in Table 8. Chemotherapy is the treatment of choice for ovarian cancer following debulking surgery and the drugs which have been most frequently used include cisplatin, carboplatin, adriamycin and cyclophosphamide. The response rate to first line chemotherapy is high, but relapse rates are also high and there is no effective second-line chemotherapy for resistant disease.

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Paclitaxel was first used as a second line agent in the treatment of ovarian cancer, and the high response rate encouraged its use as a first line drug in combination with cisplatin. Research efforts are strongly focused towards identification of mechanisms of resistance, development of new drugs with novel modes of action and development of new forms of therapy including immunotherapy and the use of biological modifiers. Cell lines are an important resource for such work and this is evident from the number of studies which report drug sensitivities and development of drug resistant lines. The previous treatment of patients from whom cell lines have been developed is summarized in Table 9. The in vitro sensitivities of some cell lines to cisplatin, adriamycin and taxol is shown in Table 10. It should be noted that the relative levels of resistance reported in Table 10 were derived using a number of different assay methods which are not directly comparable. The cell lines from which resistant sublines have been developed are shown in Table 11. The cell lines which originate from the same patient at different sites or different times are shown in Table 12. One of the novel treatment strategies currently under development involves tyrosine kinase inhibitors with specificity for the EGF receptor. TGFß is also of interest as a potential inhibitor of ovarian cancer growth. A number of cell lines have been assessed for their responses to EGF and TGFß and these data are summarized in Table 13. Finally, several lines have been successfully cloned to produce sublines and some lines are reported to grow under reduced serum or serum-free conditions. These data are shown in Table 14.

Table 9 Cell lines derived from treated patients Drug treatment

Cell lines

Radiation

CKS, COLO 330, OTN11, PEO16, SCHM-1, 154, 163

CIS or CARB only

A286, OAW 138D, OAW 180D, OAW 42, OV56

CIS/CARB + others

CAVEOC-2, HUOCA-II, MAC-2, OV-1063, OV17R, OV25, OV25R, OV58, OVCAR-2, OVCAR-3, OVCAR-4, OVISE, OVMZl, OVMZ2, OVMZ3, OVTOKO, PEA2, PEO1, PEO23, PEO4, PEO6, PM1015, RIC-2, SIB-1, TR170, UCI 101, UWOV2

Single alkylating agent

OAW 253D, OV7, SKOV3

Other

A10, AZ303, AZ364, AZ382, AZ390, CAOV-3, HUOT

Untreated

See Table 1

Abbreviations: CIS, cisplatin; CARB, carboplatin

45

Ovarian Cancer Table 10 Cell line sensitivities to cisplatin, adriamycin and paclitaxel (figures refer to IC50) Cell line 67R 1085 BR CAVEOC-2 ES-2 HAC2/P HAC2/0.1 HEY* HOC-7* HTOA HX/62 Ia288 IGROV-1 JA1 KK MH NZ-OV1 OAW 42[81] OAW 138D[81] OAW 180D[81] OAW 200D[81] OAW 253D[81] OAW 28[81] OAW 59M[81] OAW D13[81] OAW D16[81] OAW D206[81] OMC-3 OVCAR-3 OVCAR-4 OVCAR-5 OVCAR-8 OVC-8 OVISE OVTOKO PM1015 PXN/94 SKOV3 TR175 TR170 UCI 101 UCI 107

CIS (µM)

9.4 low to medium res 0.66 1.584 3.3 0.165 sens 2.5–8.8 5 sens 0.726 0.95 3.28 1.56 19.88 4.36 10.04 10.01 2.47 5.86 32.27 14.15 13.26 20.33

8.58-13.33 8.58-13.33 sens 1.1-1.6

ADM (µm)

1.82 low to medium res

TAX (µM) 9.83 8.78 10.18 3.33

0.24 0.034 3.7[77] 0.1 30,000 0.04 15,000 0.07 < 0.01 0.03 0.04 20,000 0.01 1.62 0.02 0.05

2.5[77] 5.1[77] 4[77]

sens 44.8 44.8 sens 4.4[77]

3.66 3.33 3.3 0.33

0.083 0.06 0.02 0.17

590 29

Unreferenced data is taken from the references referred to in Table 1. Abbreviations: sens, sensitive; res; resistance; IC50, concentration of drug required to reduce control values by 50%; *IC90, concentration of drug required to reduce control values by 90%; CIS, cisplatin; ADM, adriamycin (doxorubicin); Tax, taxolTM, paclitaxel

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Wilson and Gamer

Table 11 Drug-resistant cell lines Cell line

Drug

A1847

Cisplatin Adriamycin Melphalan Cisplatin Adriamycin Melphalan CPT-IIa Cisplatin

A2780 HAC2 HAC2 (=HAC 2/P) KF TYK KF-1 (cloned from KF) NOS2

[167,168] [169] [170] [171]

Cisplatin

NOS2CR1 NOS2CR2 NOS2CBR NOS2DR 0-129/DDP4 0-129/DDP8 0-129DDP16 OAW42-A

7x 16 x 8x 6x 2.1 x 4.1 x 6.3 x 68.7 x

[173]

OAW42A OAW42-SR OAW42-A1 OAW-dox OAW-dox OAW-tax OAW-tax OV1/DDP OV1/VCR OV1/DXR SKVLB (0.01) SKVLB (0.03) SKVLB (0.06) SKVLB (1.0) SKVCR (0.015) SKVCR (0.1) SKVCR (0.25) SKVCR (2.0) 41McisR 41MdoxR CH1cisR CH1doxR COLO/DDP

26x 8x 14x 93x 616x 83x 93x 15 x 800 x 20 x 4x 64 x 490 x 2000 x 4x 260 x 1000x 4100 x 4.7x 7x 6.5x 9Ox 2.5x

[197]

2.7x

[201]

Doxorubicin

Doxorubicin Taxol Doxorubicin Taxo1 Cisplatin Vincristine Adriamycin Vinblastine

Vincristine

CH1

[167]

3x 3x 20 x

OAW 42

41M

3x 5x 4x 10 x 100 X–150 x 10 x 9.7 x 2.4 x

Reference

KFr TYK/R KFr

0-129

SKOV3

A1847CP A1847AD A1847ME A2780CP A2780AD A2780ME HAC2/CPT HAC2/0.1

Magnitude of resistanceb

Cisplatin Cisplatin Cisplatin

CBDCA DWA214R Cisplatin

OV1/P (= IGROV-1)

Derived lines

Cisplatin Doxorubicin Cisplatin Doxorubicin Cisplatin

COLO3 16 2008 Cisplatin 2008/DDP a : Camptothecin analog b: Not comparable because different assay methods

[172]

[78] [174]

[198]

[175] [176]

[176]

[199] [200] [199] [200] [201]

47

Ovarian Cancer Table 12 Multiple cell lines derived from the same patient Cell line

Relationship

Reference

YAOVBIX1 YAOVBIX3

Two morphologically distinct clones from same ascites sample

[145]

CI 80-13A CI 80-13S

Two cell lines derived from solid (S) and ascites (A) of same patient at same time

[40]

COV413A COV413B

Metastasis from sigmoid (A) and from bladder dome (B) of same patient at same time

[45]

OAW D13, OAW D16, OAWD206

Peritoneal fluid (D13) and omental deposit (D16) concurrently from same patient pre-treatment and post-treatment sample (D206) from same patient

[81]

PEO1 PE04 PEO6

Established from ascites of same patient during treatment and relapse

[102]

PEA1 PEA2

Established from same patient before and after treatment

[102]

PEO14 T014

Established from ascites (PEO14) and solid metastasis (TO14) from same patient prior to treatment

[102]

PEO14, TO14 PEO23

Established from same patient pre (PEO14, TO14) and post treatment (PEO23)

[102]

RMUG-L RMUG-S

Two morphologically distinct cell lines derived from same tumor sample

[106]

REFERENCES 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15.

Boyle P et al. In Ovarian Cancer 4, Pub. Chapman and Hall, Chapter 9: 91, 1996. Southam CM, Cancer; 7, 394, 1954. Rose GG et al. Journal of the National Cancer Institute 11: 1223, 1951. Wright JC et al. Cancer 15: 284, 1962. Limburg HG, Proc Roy Soc Med 62: 361, 1969. Ioachim HL et al. Laboratory Investigation 31: 381, 1974. Ioachim HL et al. Natl Cancer Inst Monogr 42: 45, 1975. DiSaia PJ et al. Gynecologic Oncology 3: 215, 1975. Kimoto T et al .Acta Path Jap 25: 89, 1975. Wilson AP, In Cell and Tissue Culture Laboratory Procedures, John Wiley and Sons, Preparation of Ovarian Cell Cultures, 1996. Uitendaal MP et al. British Journal of Cancer 48: 55, 1983. Broxterman HJ et al. International Journal of Cell Cloning 5: 158, 1987. Mills GB et al. Cancer Research 48: 1066, 1988. Bast RC et al. Journal of Clinical Investigation 68: 1331, 1981. Arklie J, DPhil Thesis Oxford University, 1981.

48

Wilson and Gamer

Table 13 Response to TGFb and EGF Cell line

Concn

% Inhibition

Reference

TGFb DOV13 OVCA 420 OVCA 429 OVCA 432 OVCA 433

10ng/ml 10ng/ml 10ng/ml 10ng/ml 10ng/ml

0 90 0 20 20

[177]

1 ng/ml 1ng/ml 1ng/ml 1ng/ml 1ng/ml 1ng/ml

42 0 0 82 40 29

[178]

1ng/ml 1ng/ml 1ng/ml –– 1 pM

20 50 0

[179]

No response 50

[180]

Concn

% Stimulation

Reference

0.1nM 0.1 nM 0.1nM

~65 ~20 ~60

[181]

A7 OAW 138D OAW 180D OAW 200D OAW 253D OAW 28 OAW 59M

10ng/ml 10ng/ml 10ng/ml 10ng/ml 10ng/ml 10ng/ml 10ng/ml

–32 6 8 0 12 91 5

[182]

OAW 42

10ng/ml

–47

[183]

OAW 180D OAW200D OAW253D OAW28 OAW42 OAW59M PEO1 PEO14 PEO4 IGROV-1 OVCCR1 Cell line EGF PEO 1 PEO14 PEO4

Abbreviations: TGF- b, transforming growth factor beta; EGF, epidermal growth factor 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29.

Ward BG et al. Cancer 60: 787, 1987. Connel ND et al. Cell 34: 245, 1983. Moll Ret al. Cell 31: 11, 1982. Moll R et al. American Journal of Pathology 140: 427, 1992. Smith A et al. Cancer Genet Cytogenet 24: 231, 1987. Cameron MR et al. Oncology Research 7: 145, 1995. Lichtenstein A et al. Cancer Research 50: 7364, 1990. Orth K et al. Proc Natl Acad Sci(USA) 91: 9495, 1994. Nio Y et al. Cancer Immunol Immunother 27: 246, 1988. Chenevix-Trench G et al. Am Journal of Human Genet 55: 43, 1994. Freedman RS et al. Cancer 42: 2352, 1978. Crickard K et al. Gynecologic Oncology 32: 163,1989. Abu Sinna G et al. Gynecologic Oncology 7: 267, 1979. Hamilton TC et al. Seminars in Oncology 11 : 285, 1990.

49

Ovarian Cancer Table 14 Cell lines that grow in the absence of or in reduced concentrations of serum Cell line

Clones

Reference

HOC-7

N1,N2,N3 D1,D2,D3

[184]

HR

HR-A HR-I

[185]

OVISE

OVISE-1, -2, -3 (72 Clones obtained)

[186]

COV434

COV434SUBCL.

[45]

COV413B

COV353

[45]

COV362

COV362.4

UWOV2

UWOV2Sf (0%)

[45] 1

OVCCR1 1

[71]

OVCCR1/rs (0.5%)1 OVCCR1/sf (0%)1

[96]

Concentration of serum used

30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 53.

[117]

MAC-2 (0%) RIC-2 (3%) 1 SCHM-1 (3%) 1 SIB-1 (0%)1 1

Fanning J et al. Gynecologic Oncology 39: 119, 1990. Yabushita H et al. Obst Gynecol Jpn 41: 888, 1989. Ichikawa Y et al. International Journal of Cancer 69: 466, 1996. Neyns B et al. Oncogene 12: 1247, 1996. Vandamme B et al. Cancer Research 52: 6646, 1992. Geisinger KM et al. Cancer 63: 280, 1989. Safrit JT, Gynecologic Oncology 48: 214, 1992. ATCC – Unpublished data deposited by J. Fogh. Griffon G et al.Anticancer Research 16: 177, 1996. Hills CA et al. Cancer 59: 527, 1989. Bertoncello I et al. Australian JEXp Biol & Med Sci 63: 241, 1985. Sekiguchi M et al. Japan J Exp Med 50: 283, 1980. Woods LK et al. Cancer Research 39: 4449, 1979. DSMZ – Unpublished data deposited by G. Moore. ECACC – Unpublished data deposited by G. Moore. Van den Berg-Bakker CA et al., Int Journal of Cancer 53: 613, 1993. Briers TW et al. Cancer Research 49: 5153, 1989. Simon WE et al. Journal of the National Cancer Institute 70: 839, 1983. Duran GE et al. Cancer Chemotherapy & Pharmacology 38: 210, 1996. Molthoff CFM et al. International Journal of Cancer 47: 72, 1991. Niimi S et al. Cancer Research 52: 328, 1992. Patillo RA et al. Cancer Research 39: 1185, 1979. Buick RN et al. Cancer Research 45: 3668, 1985. Ishiwata I et al. Gynecologic Oncology 25: 95, 1986.

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Wilson and Gamer

Table 15 Cell lines described after Table was compiled Cell line

Histology

Comments

Reference

KEN-3 EC MN-1 3AO and AO

Fibrosarcoma Mixed germ cell tumor Mucinous cystadenocarcinoma NK

[202,203] [202,204] [202,205] [206]

SNU-8 SNU-119 SNU-251 SNU-563 SNU-840 CABA-1 LN1 INT.OV1 INTOV2 INT.OV3 INT.OV4 INT.OV5 INT.OV6 INT.OV7 INT.OV8 INT.OV9 UL-3A,B,C

Serous papillary cystadenoca Serous papillary cystadenoca Endometrioid carcinoma Endometrioid carcinoma Malignant Brenner tumor Papillary adenocarcinoma Mixed Mullerian tumor Serous Serous Mucinous Mucinous Serous Serous Serous Mucinous Borderline Well-differentiated serous adenocarcinoma

De novo resistance to cisplatin Sensitive to cisplatin Sensitive to cisplatin Estrogen and progesteronedependent. Deposited with Chinese cell bank Wild type p53, BRCA1, hMLH1 p53 mutation p53, BRCA1, hMLH1 mutations p53 mutation Wild type p53,RCA1, hMLH1 p53 mutation

UT-OC-1 UT-OC-2 UT-OC-3 UT-OC-4 UT-OC-5 CP70 OVT2 YKT

Mucinous Endometrioid Serous Endometrioid Serous

54. 55. 56. 57. 58. 59. 60. 61. 62. 63.

Serous

The INT series have been characterized for antigens potentially recognisable by HLA-restricted cytotoxic T cells

[207] [207] [207] [207] [207] [208] [209] [189]

A obtained at staging [210] laparotomy, B during treatment with cisplatin and taxol and C after clinical progression [211,212]

Analyzed for TGF-b receptors Analyzed for TGF-b receptors Grows in nude mouse ovary and metastasizes to liver

Yamada T et al. Keio J Med 23: 53, 1974. Filmus J et al. Cancer Research 46: 5179, 1986. Kikuchi Y et al. Biochem Biophys Res Communications 123: 385, 1984. Riken. Source reference not found. Deposited by I. Ishiwata. Uhl-Steidl M et al. Oncology 52: 400, 1995. Ishiwata I et al. Gynecologic Oncology 30: 35, 1988. Ishiwata I et al. Gynecologic Oncology 26: 340, 1987. Ishiwata I et al. Journal of the National Cancer Institute 72: 789, 1984. Ishiwata I et al. Journal of the National Cancer Institute 78: 667, 1987. Ishiwata I et al. Journal of the National Cancer Institute 75: 411, 1985.

[213] [213] [214]

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51

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Ovarian Cancer 166. 167. 168. 169. 170. 171. 172. 173. 174. 175. 176. 177. 178. 179. 180. 181. 182. 183. 184. 185. 186. 187. 188. 189. 190. 191. 192. 193. 194. 195. 196. 197. 198. 199. 200. 201. 202. 203. 204. 205. 206. 207. 208. 209. 210. 211. 2 12. 213. 214.

53

DiSimone N et al. Endocrinology 137: 486, 1996. Hamilton TC et al Seminars in Oncology 11: 285, 1984. Louie KG et al. CancerResearch 45: 2110, 1985. Kijima T et al. Anticancer Research 14: 799, 1994. Niimi S et al. Cancer Research 52: 328, 1992. Kikuchi Y e t al. Japanese Journal of CancerResearch 88: 213, 1997. Kikuchi Y et al. J Natl CancerInst 77: 1181, 1986. Misawa T et al. Japanese Journal of Cancer Research 86: 88, 1995. Redmond A et al. European Journal of Cancer 29A: 1078, 1993. Voeltzel T et al. Hybridoma 13: 367, 1994. Bradley G et al. Cancer Research 49: 2790, 1989. Berchuk A et al. Cancer Research 50: 4087, 1990. Wilson AP et al. British Journal ofCancer 63: 61 (P145), 1991. Bartlett JMS et al. British Journal of Cancer 65: 655, 1992. Jozan S et al. Proc. Am. Assoc. CancerResearch 32: 83, 1991. Crew AJ et al. European Journal of Cancer 28: 337, 1991. Wilson AP et al. unpublished data. Wilson AP et al. British Journal of Cancer 63: 61 (P144), 1991. Grunt TW et al. Differentiation 53: 45, 1993. Kikuchi Y et al. Cancer Research 47: 592, 1987. Nakazawa T et al.Acta Obstet Gynecol Jpn 43: 1041, 1991. Stahel RA et al. Int J Cancer 41: 218, 1988. Radford H and Wilson AP, Analytical Cell Path 11: 173, 1996. Ramakrishna V et al. Int J Cancer 73: 143, 1997. Fox H and Buckley CH. In Pathology for Gynaecologists, 2nd ed. Edward Arnold, 1991. Harrap KR et al. Annals Oncology 1: 65, 1990. O’Connor PM et al. CancerResearch 57: 4285, 1997. De Feudis et al. Br J Cancer 76: 474, 1997. Boyer JC et al. Cancer Research 55: 6063, 1995. Brown R et al. Oncogene 15: 45, 1997. Aebi S et al. Cancer Research 56: 3087, 1996. Moran E et al. Europ J Cancer 33: 652, 1997. Masanek U et al. Anticancer Drugs 8: 189, 1997. Kelland R et al. Cancer Research 52: 3857, 1992. Sharp SY et al. Br J Cancer 70: 409, 1994. Andrews PA et al. Cancer Research 45: 6250, 1985. Kiyozuka Y et al. Oncology Reports 2: 517, 1995. Kiyozuka Y et al. Acta Obst Gynaecol Jpn 44: 461, 1992. Imamura K et al. Oncology Reports 2: 17, 1995. Yoshida M et al. J Jpn Soc Clin Cytol 32: 1, 1993. Shi-Zhong B et al. Cancer 79: 1944, 1997. Ying Y et al. Gynecologic p66: 378, 1997. Dolo V et al, Oncology Research 9: 129, 1977. Becker JL et al. In Vitro Cell Dev Biol 33: 325, 1997. Yashar C et al.Am JReprod Immunol38: 431, 1997. Engblom P et al. AnticancerResearch 16: 1743, 1996. Engblom P et al. Anticancer Research 17: 1849, 1997. Jakowlew SB et al. Anticancer Research 17: 1849, 1997. Yoshida Y et al. Anticancer Research 18: 327, 1998.

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Chapter 18 Cervical Cancer Swee Y. Sharp and Lloyd R. Kelland Institute of Cancer Research, 15 Cotswold Road, Sutton, Surrey SM2 5NG, UK. Tel: 004418-722-4261; Fax: 0044-181-722-4101; E-mail: lloyd@icl:ac.uk

1.

INTRODUCTION

Cancer of the cervix is the second most common cause of cancer death amongwomen worldwide. There are approximately 13,500 new cases and 6000 deaths from the disease per annum in the United States. In the United Kingdom, the overall 5 year survival rate is 58%. Although the prognosis for early stage patients is good through combined surgery and radiotherapy, late stage disease is not particularly chemosensitive. Clinically, 95% of cervical neoplasms are derived from squamous cells and 4-5% are adenocarcinomas. Cervical cancer may hold claim to the origins of tissue culture of human tumors, since the earliest and probably most widely used cell line, HeLa, was established by George Gey and co-workers at Johns Hopkins in 1952 from a carcinoma of the cervix of a 31 year old lady, Henrietta Lacks (1). Now believed to be derived from an adenocarcinoma of the cervix, a detailed historical record of this famous cell line has been published (2). Cell lines derived from cervical cancer have been useful in understanding the tumor biology of the human papillomaviruses (HPV) (3) and the corresponding role of these viruses in the inactivation of the tumor suppressor gene p53. Today, there are approximately 30 commonly used continuous cell lines representative of the disease, including several clonal sublines of HeLa.

2.

ESTABLISHMENT OF CELL LINES

Continuous cell lines of cervical carcinoma grow as monolayers with an epithelioid morphology. Cell lines can be established using protocols for the

J.R.W Masters and B. Palsson (eds.),Human Cell Culture Vol.II, 55- 70. © 1999 Kluwer Academic Publishers. Printed in Great Britain.

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cultivation of epidermal keratinocytes and other human squamous carcinomas (4). This involves fine chopping and enzymatic disaggregation of tumor biopsies using a cocktail of enzymes (collagenase 0.2 mglml, pronase 0.5 mg/ml, DNaseI 0.2 mg/ml; 37°C 10 mins) followed by culture in a 5% CO2 atmosphere in Dulbecco’s Modified Eagle’s medium or Hams F12 supplemented with 20% fetal bovine serum plus the following growth factors: hydrocortisone at 0.4 µg/ml, insulin 5 µg/ml and transferrin 5 µg/ml. In addition, many primary cultures retain dependence on fibroblast feeder layer support and are unable to grow in semisolid (agar) medium. The feeders usually are a lethally irradiated (200 Gy) layer of the Swiss mouse embryonic fibroblast line 3T3 added at 2 × 105cells/25 cm2 flask. Control of fibroblast overgrowth is critical in the early stages of primary culture. Such control may be achieved by a combination of careful removal of underlying connective tissue from initial biopsies and selective removal by detachment using a 30 second incubation of the primary culture with 0.02% EDTA or physical detachment using a rubber policeman. Typically, after 15 to 20 passages, cells exhibit less stringent growth requirements and may be maintained in medium containing 10% fetal bovine serum plus hydrocortisone and insulin but without feeder layer support. Colony forming efficiencies generally remain low in soft agar ( 2 cm.) Lymph Node Metastasis (+) Poor Survival (< 29 months survival)(a)

5 / 10 15 / 21 16 / 20 11 / 16 6 / 13

Aneuploidy

12 / 15 (80%)

Estrogen/Progesterone Receptors (-) HER2/neu Overexpression p53 Immunostaining (+)

3 / 15 (20%) 5 / 15 (33%) 11 / 15 (73%)

3p LOH 5q LOH 6q LOH 8p LOH l lq LOH 9p21 ( CDKN2a gene) LOH 17p (TP53 gene) LOH 17q (BRCA1 gene) LOH

12 / 17 (71%) 7 / 11 (63%) 13 / 17 (77%) 12 / 16 (75%) 7 / 14 (50%) 6 / 13 (46%) 11 / 14 (79%) 14 / 16 (88%)

(50%) (71%) (80%) (69%) (46%)

After receiving curative intent mastectomy.

(a)

6.

SUMMARY

In summary, we have established a panel of 21 new breast cancer cell lines that included 18 cell lines derived from primary tumors and three derived from metastatic lesions, with an 11% culture success rate. For 19 of these breast cancer cell lines, we also established one or more corresponding nonmalignant cell strains or B lymphoblastoid lines. Cell lines included those from patients with germ-line BRCA1 and FHIT gene mutations. While our studies indicate that only a subset of primary breast carcinomas having several features indicative of advanced tumors with poor prognosis can be successfully cultured, the cell lines retain the properties of their parental tumors for lengthy culture periods and thus provide suitable model systems for biomedical studies of at least one major form of breast cancer.

ACKNOWLEDGMENTS Supported in part by the U.S. Army Grant DAMD17-94-J-4077, and the Komen Foundation.

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REFERENCES Ahmadian M, Wistuba II, Fong KM, Behrens C, Kodagoda DR, Saboorian MH, Shay J, Tomlinson GE, Blum J, Minna JD, Gazdar AF. Cancer Res 57: 3664-8, 1997. Aldaz CM, Chen T, Sahin A, Cunningham J, Bondy M. Cancer Res 55: 3976-81,1995, Amadori D, Bertoni L, Flamigni A, Savini S, De Giovanni C, Casanova S, De Paola F, Amadori A, Giulotto E, Zoli W. Breast Cancer Res Treat 28: 251-60, 1993. An HX, Niederacher D, Picard F, van Roeyen C, Bender HG, Beckmann MW. Genes Chromosomes Cancer 17: 14-20, 1996. Andersen TI, Gaustad A, Ottestad L, Farrants GW, Nesland JM, Tveit KM, Borresen AL. Genes Chromosomes Cancer; 4: 113-21, 1992. Baas IO, Mulder JW, Offerhaus GJ, Vogelstein B, Hamilton SR. J Pathol 172: 5-12, 1994. Band V, Sager R. Proc Natl Acad Sci USA 86: 1249-53, 1989. Band V, Zajchowski D, Swisshelm K, Trask D, Kulesa V, Cohen C, Connolly J, Sager R. Cancer Res 50: 7351-7, 1990. Borg A, Zhang QX, Alm P, Olsson H, Sellberg G. Cancer Res 52: 2991-4, 1992. Buckley MF, Sweeney KJ, Hamilton JA, Sini RL, Manning DL, Nicholson RI, deFazio A, Watts CK, Musgrove EA, Sutherland RL. Oncogene 8: 2127-33,1993. Cailleau R, Olive M, Cruciger QV. In Vitro 14: 911-5, 1978. Callahan R, Gallahan D, Smith G, Cropp C, Merlo G, Diella F, Liscia D, Lidereau R. Ann NY Acad Sci 698: 21-30, 1993. Devilee P, van den Broek M, Kuipers-Dijkshoorn N, Kolluri R, Khan PM, Pearson PL, Cornelisse CY. Genomics 5: 554-60, 1989. Eiriksdottir G, Sigurdsson A, Jonasson JG, Agnarsson BA, Sigurdsson H, Gudmundsson J, Bergthorsson JT, Barkardottir RB, Egilsson V, Ingvarsson S. Int J Cancer 64: 378-82, 1995. Ethier SP, Mahacek ML, Gullick WJ, Frank TS, Weber BL. Cancer Res 53: 627-35, 1993. Fishel R. J Natl Cancer Inst 88: 1608-1609, 1996. Fujii H, Gabrielson E. Genes Chromosomes Cancer 16: 35-39, 1996. Gazdar AF, Kurvari V, Virmani A, Gollahon L, Sakaguchi M, Westerfield M, Kodagoda D, Stasny V, Cunningham T, Wistuba 11, Tomlinson G, Tonk V, Ashfaq R, Leitch M, Minna JD, Shay JW. Int J Cancer 78: 766-774, 1998. Gudmundsson J, Barkardottir RB, Eiriksdottir G, Baldursson T, Arason A, Egilsson V, Ingvarsson S. Br J Cancer 72: 696-701, 1995. Kirchweger R, Zeillinger R, Schneeberger C, Speiser P, Louason G, Theillet C. Int J Cancer 56: 193-9,1994. Lasfargues EY, Ozzello L. J Natl Cancer Inst 21: 1131-47, 1958. Leibovitz A. An Atlas of Human Tumor Cell Lines. Hay R, Park J-G, Gazdar AF (eds). Academic Press: Philadelphia, pp 161-184, 1994. Levenson AS, Jordan CV. Cancer Res 57: 3071-9,1997. Li J, Yen C, Liaw D, Podyspanina K, Bose S, Wang SI, Puc J, Miliaresis C, Rodgers L, McCombie R, Bigner S, Giovanella BC, Ittmann M, Tycko B, Hibshoosh H, Wigler MH, Parsons R. Science 275: 1943-7, 1997. Loeb LA. Cancer Res 51: 3075-9, 1991. Mahacek ML, Beer DG, Frank TS, Ethier SP. Breast Cancer Res Treat 28: 267-76, 1993. McCallum HM, Lowther GW. Breast Cancer Res Treat 39: 247-59, 1996. McGuire WL, Clark GM. N Engl J Med 326: 1756-61,1992. Muleris M, Almeida A, Gerbault-Seureau M, Malfoy B, Dutrillaux B. Genes Chromosomes Cancer 10:160-70,1994. Nagai MA, Pacheco MM, Brentani MM, Marques LA, Brentani RR, Ponder BA, Mulligan LM. Br J Cancer 69: 754-8, 1994.

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Nowell PC. Science 194: 23-8, 1976. Ohta M, Inoue H, Cotticelli MG, Kastury K, Baffa R, Palazzo J, Siprashvili Z, Mori M, McCue P, Druck T, Croce CM, Huebner K. Cell 84: 587-97,1996. Orphanos V, McGown G, Hey Y, Boyle JM, Santibanez-Koref M. Br J Cancer 71: 290-3,1995. Petersen OW, van Deurs B, Nielsen KV, Madsen MW, Laursen I, Balslev I, Briad P. Cancer Res 50: 1257-70, 1990. Press MF, Pike MC, Chazin VR, Hung G, Udove JA, Markowicz M, Danyluk J, Godolphin W, Sliwkowski M, Akita R, Paterson MC, Slamon DJ. Cancer Res 53: 4960-70, 1993. Scherer WF, Syverton JT, Gey GO. J Exp Med 97: 695-709,1953. Sekido Y, Ahmadian M, Wistuba 11, Latif F, Bader S, Wei MH, Duh FM, Gazdar AF, Lerman MI, Minna JD. Oncogene 16: 3151-7,1998. Shivapurkar N, Sood S, Wistuba 11, Virmani AK, Maitra A, Milchgrub S, Minna JD, Gazdar AF. Cancer Res, in press. Silvestrini R, Benini E, Daidone MG, Veneroni S, Boracchi P, Cappellend V, DiFronzo G, Veronesi U. J Natl Cancer Inst 85: 965-70, 1993. Singh S, Simon M, Meybohm I, Jankte I, Jonat W, Maass H, Goedde HW. Hum Genet 90: 635-40,1993. Slamon DJ, Clark GM. Science 240: 1795-8,1988. Smith HS, Wolman SR, Hackett AJ. Biochem Biophys Acta 738: 103-23, 1984. Smith HS, Hackett AJ. J Lab Clin Med 109: 236-43, 1987. Smith HS, Wolman SR, Dairkee SH, Hancock MC, Lippman M, Leff A, Hackett AJ. J Natl Cancer Inst 78: 611-5, 1987. Sundaresan V, Chung G, Heppell-Parton A, Xiong J, Grundy C, Roberts I, James L, Cahn A, Bench A, Duglas J, Minna J, Sekido Y, Lerman M, Latif F, Bergh J, Li H, Lowe N, Ogilvie D, Rabbits P. Oncogene 1723-9, 1998. Tavassoli FA. Pathology of the breast. Appleton & Lange: East Norwalk, pp 384-90, 1992. Thompson AM, Morris RG, Wallace M, Wyllie AH, Steel CM, Carter DC. Br J Cancer 68: 64-8,1993. Tomlinson GE, Chen TT, Stastny VA, Virmani AK, Spillman MA, Tonk V, Blum JL, Schneider NR, Wistuba 11, Shay JW, Minna JD, Gazdar AF. Cancer Res 58: 3237-42,1998. Virmani AK, Fong KM, Kodagoda D, McIntire D, Hung J, Tonk V, Minna JD, Gazdar AF. Genes Chromosomes Cancer 21: 308-19, 1998. Wistuba 11, Montellano FD, Milchgrub S, Virmani AK, Behrens C, Chen H, Ahmadian M, Nowak JA, Muller C, Minna JD, Gazdar AF. Cancer Res 57: 3154-8, 1997. Wistuba II, Behrens C, Milchgrub S, Syed S, Ahmadian M, Virmani AK, Cunningham TH, Ashfaq R, Minna JD, Gazdar AF. Clinical CancerRes 4: 2931-8, 1998.

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Chapter 22 Ovarian Germ Cell Tumors

Masumi Sawada1 and Tsuneharu Miki2 Department of Obstetics and Gynecology and 2Department of Urology, Osaka University Medical School, 2-2 Yamadaoka Suita Osaka, Japan. Tel: 0081-6-6879-3351; Fax: 0081-66879-3359 1

1.

INTRODUCTION

Depending on their degree of differentiation, germ cell tumors may contain many different types of cell, including seminoma, embryonal carcinoma, teratoma, choriocarcinoma and yolk sac tumor. Dysgerminoma (seminoma), the most common type of human germ cell tumor, does not occur spontaneously in mice and cannot be induced experimentally in any animal (Damjanov, 1986), and choriocarcinoma is frequently found in human but not murine germ cell tumors. Consequently, human cell lines and xenografts derived from germ cell tumors are particularly valuable models (Andrews and Damjanov, 1994).

2.

PATHOLOGY

Germ cell tumors are derived from primitive germ cells. According to the concept proposed by Teilum (1965), dysgerminoma is a primitive germ cell neoplasm which has not acquired the potential for further differentiation. In contrast, embryonal carcinoma (EC) is composed of multipotential cells capable of differentiating in extragonadal directions (yolk sac tumor and choriocarcinoma) and in somatic directions (teratoma). Dysgerminoma is the most frequent malignant ovarian germ cell tumor (Scully, 1979; Talerman, 1987). The cells have large prominent round nuclei with one or two prominent nucleoli, and abundant cytoplasm which contains

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glycogen and lipid. Dysgerminoma frequently occurs in a pure form, although it may be associated with other germ cell tumor elements. In occasional cases human chorionic gonadotropin (HCG) can be demonstrated within the cytoplasm of some dysgerminoma cells (Zaloudek, 1981). Lactic dehydrogenase (LDH) and its isoenzyme LDH-1 is found in the tumor cells (Awais, 1983; Fujii et al., 1985). Yolk sac tumor (YST) is a highly malignant neoplasm and the second most common ovarian malignant germ cell neoplasm occurring in pure form (Talerman, 1987). Yolk sac tumor is encountered most frequently in the second and third decades, and is very rare after the menopause, with only a few well documented cases (Talerman, 1987). Microscopically, YST usually shows a variety of histologic patterns, including microcystic, endodermal sinus, papillary, glandular-alveolar, solid, myxomatous, macrocystic, polyvesicular vitelline, hepatoid and primitive intestinal patterns (Talerman, 1987; Jacobsen and Talerman, 1989). The demonstration of alpha-fetoprotein (AFP) within the tumor tissue by immunohistochemistry and elevated levels in the serum are diagnostic. Immature teratoma is an uncommon tumor, accounting for less than 1% of ovarian teratomas (Talerman, 1992). The tumors are usually large and contain cystic areas. Microscopically they are composed of immature tissues derived from the three primitive germ layers and show varying degrees of maturity. The most common constituents are neuroectodermal tissue, different types of mesenchymal tissue and various types of epithelium. A number of marker proteins can be demonstrated in teratomas. AFP and alpha-1-antitrypsin may be found in the epithelium of glandular structures and in foci of hepatic differentiation. CEA may be found in glandular epithelium showing intestinal differentiation (Jacobsen and Talerman, 1989). Nongestational choriocarcinoma is very rare (Jacobs et al. 1982; Vance and Geisinger, 1985). Choriocarcinoma is now seen more frequently as a component of mixed germ cell tumors due to better and more extensive sampling (Talerman, 1992). The tumor produces large amounts of HCG and elevated serum levels are present. HCG is a valuable marker for patients with ovarian germ cell tumors containing choriocarcinoma. Comprehensive overviews of the pathology of human germ cell tumors have been produced by Damjanov (1983,1986), Talerman (1987,1992) and Jacobsen and Talerman (1989).

3.

CELL LINES

The origins of the published human ovarian germ cell tumor-derived cell lines are shown in Table 1.

Cell lines and xenografts derived from female germ cell tumors KURATOU

Patient age TNM category Primary site Specimen site

Culture method Culture medium Antigens Number of passages Tumor pathology Xenograft pathology Ploidy Primary reference

25 T3 Ovary Primary

PA-1

12 Recurrence Ovary Ascitic fluid metastasis DIS DIS DM 170 Eagle’s MEM HLA HLA 41 249 IT D IT D Triploid Diploid Tanaka et al. Zeuthen et al. (1989) (1980)

HUOT

IMa

YST-1

YST-2

YST-3

28 Recurrence Ovary Vaginal metastasis X Ham’s F12 AFP 50 IT AC Hyperdiploid Ishiwata et al. (1985)

25 Recurrence Ovary Lymph node metastasis E RPMI 1640 HCG 22 D, C C Hypotriploid Sekiya et al. (1983)

38 Recurrence Ovary Peritoneal metastasis X Eagle’s MEM LDH isozyme 54 Y Y Normal female Sawada et al. (1982)

24 Recurrence Ovary Omental metastasis X Eagle’s MEM AFP 27 Y Y Normal female Sawada et al. (1982)

14 Recurrence Ovary Peritoneal metastasis X Eagle’s MEM AFP, HCG 28 Y, IT Y Normal female Sawada et al. (1982)

Ovarian Germ Cell Tumors

Table 1

Abbreviations: IT, immature teratoma; D, dysgerminoma; C, choriocarcinoma; Y, yolk sac tumor; EC, embryonal carcinoma; AC, anaplastic carcinoma; DIS, dissociated tissue; E, explant; X, xenograft; AFP, alphafetoprotein; HCG- b, human chorionic gonadotropin-b; LDH, lactic dehydrogenase

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The KURATOU cell line (Tanaka et al. 1989) is the only cell line with characteristics of pure dysgerminoma. In culture, small polygonal cells with a prominent nucleus predominate, admixed with a small number of polynuclear giant cells. The original tumor and the xenograft in nude mice were composed only of dysgerminoma. However, an immunohistochemical study demonstrated HCG in almost all of the cultured cells. Kimoto et al. (1975) described the establishment of a cell line from the ascites of a 63-year-old female patient with embryonal carcinoma containing yolk sac elements. However, the cell of origin of this cell line remains unclear as the cultured cells assumed the morphology of mesothelial cells or fibroblasts and there is no description of AFP production. The PA-1 cell line was established in nude mice by Giovanella et al. (1974) from the ascitic fluid of a patient with a recurrent immature teratoma of the ovary, and was characterized by Zeuthen et al. (1980). The cells have a fairly homogeneous appearance, similar to embryonal carcinoma. However, an alternative suggestion is that PA-1 may be immature neuroectodermal teratoma, because these cells are unlike other human embryonal carcinoma cells in culture, both morphologically and in their expression of characteristic surface antigen markers (Andrews and Damjanov, 1994). The PA-1 cell line has been extensively used in studies of carcinogenesis (Tainsky et al. 1984, 1988), extracellular matrix components (Fukuda et al. 1986; Kawata et al. 1991) and cell surface antigens (Andrews et al. 1996). The HUOT cell line was established by Ishiwata et al. (1985) from a recurrent human ovarian immature teratoma. The cultured cells were polygonal, columnar or spindle-like and formed round colonies. In contrast to PA-1, HUOT cells produced large amount of AFP during the stationary growth phase, characterized by the formation of cysts. The culture material and primary ovarian tumor were composed of tridermal organoids. However, the cultured cells produced anaplastic carcinomas following xenotransplantation to nude mice. Kikuchi et al. (1984) established and characterized the YK cell line derived from an immature teratoma. The YK cells grew as xenografts with the histological appearance of embryonal carcinoma. YK cells produce AFP and high levels of LDH. However, the YK cell line is no longer available (personal communication). The IMa cell line was established by Sekiya et al. (1983) from a xenograft, the histology of which was pure choriocarcinoma. The original tumor was a dysgerminoma containing a small area of choriocarcinoma and IMa cells produce HCG. Their response to interferons was studied (Sekiya et al. 1987). The IMa cell line provides a useful tool for clarifying the biological differences between nongestational and gestational choriocarcinoma cells.

Ovarian Gem Cell Tumors

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125

XENOGRAFTS

In addition to the small number of cell lines derived from female germ cell tumors, there are also a small number of xenografts (Sawada et al. 1982). YST1, 2 and 3 xenografts retain a histology similar to that of the original tumor, and their main characteristics are included in Table 1.

REFERENCES Andrews PW and Damjanov I. In: Atlas of human tumor cell lines (Hay RJ, Park JG and Gazdar A eds.) Academic Press, San Diego, p.443, 1994. Andrews PW et al. Int J Cancer 66: 806, 1996. Awais GM. Obstet Gynecol 61: 99, 1983. Damjanov I. In: The human teratomas (Damjanov I, Knowles B and Solter D eds.) Human Press, Clifton, New Jersey, p.23, 1983. Damjanov I. In: Pathology of the testis and its adnexa (Talerman A and Roth LM eds.) Churchill Livingstone, New York, p.193, 1986. Fujii S et al. Gynecol Oncol 22: 65,1985. Fukuda MN et al. J Biol.Chem 261: 5145,1986. Giovanella BC et al. J. Natl Cancer Inst 52: 921, 1974. Ishiwata I et al. J Nat1 Cancer Inst 75: 411, 1985. Jacobs AJ et al. Obstet Gynec Surv, 37: 603, 1982. Jacobsen GK and Talerman A. Atlas of germ cell tumours (Jacobson GK and Talerman A eds.) Munksgaard, Copenhagen, 1989. Kawata M et al. Cancer Res 51: 2655, 1991. Kikuchi Y et al. Cancer Res 44: 2952, 1984. Kimoto T et al. Acta Pathol Jap 25: 89, 1975. Sawada M et al. Gynecol Oncol 13: 220, 1982. Scully RE. In: Atlas of tumor pathology, second series, fascicle 16, Armed Forces Institute of Pathology, Washington D.C., 1979. Sekiya S et al. In Vitro 19: 489, 1983. Sekiya S et al. Differentiation 33: 266, 1987. Tainsky MA et al. Science 225: 643, 1984. Tainsky MA et al. Anticancer Res 8: 899, 1988. Talerman A. In: Blaustein's pathology of the female genital tract (Kurman RJ ed.) Springer Verlag, New York, 1987. Talerman A. In: Gynecological tumors. (Sasano N ed.) Springer Verlag, Berlin Heidelberg, p.165, 1992. Tanaka K et al. Acta Obst Gynaec Jpn 41: 1360, 1989 Teilum G. Acta Pathol Microbiol Scand 64: 407, 1965. Vance RP and Geisinger KP. Cancer 56: 2321, 1985. Zaloudek JC et al. Am J Surg Path 5: 361, 1981. Zeuthen J et al. Int J Cancer 25: 19, 1980.

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Chapter 23 Testicular Germ Cell Tumors

Martin F. Pera Institute of Reproduction and Development, Monash Medical Centre, Monash University, Clayton, Victoria 3168, Australia. Tel: 0061-3-9594- 7318; Fax: 0061-3-9594- 7311; E-mail: [email protected]. au

1.

INTRODUCTION

Experimental investigation of germ cell tumors began in the mouse, with the work of Barry Pierce and Roy Stevens (reviews, Pierce et al. 1978, Stevens, 1983). These investigators made major contributions to the stem cell concept of cancer differentiation and our understanding of the pathogenesis of germ cell tumors. Following the development of methods for in vitro culture of mouse teratocarcinomas, these cell lines gained wide acceptance as models for the early embryo (Martin, 1980). Perhaps the most significant contribution of teratocarcinoma studies in the mouse was to provide the experimental background and intellectual impetus for the derivation of diploid embryonic stem cells (reviewed by Evans and Kaufman, 1983), one of the most important tools in experimental biology today. Human germ cell tumors were among the many types of cancer from which Fogh and co-workers (Fogh and Trempe, 1975) developed permanent cell lines in the 1970s. Other workers who described the derivation of cell lines from human germ cell tumors include Bronson et al. (1983), Cotte et al. (1981) and Pera et al. (1987). Andrews and co-workers, using cell lines established by Fogh and Bronson, were the first to undertake the systematic characterization of cell lines from germ cell tumors of the testis (Andrews et al. 1980). The first reports of clonally derived human teratoma cell lines capable of differentiation into defined cell lineages were in 1984 (Andrews et al. 1984; Thomson et al. 1984) and ironically these were both based on one of the oldest cell lines, the Tera-2 line derived by Fogh (above). Since then, these lines and others have

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been used in a variety of studies, most of which relate to cell differentiation and chemosensitivity. The recent derivation of diploid embryonic stem cell lines from monkey blastocysts (Thomson et al., 1995) has shown that embryonal carcinoma cells are indeed similar to their normal embryonic counterparts, validating their use as a model for embryonic cell differentiation and confirming Pierce’s concept of malignancy as a caricature of normal differentiation. The properties of cell lines derived from human germ cell tumors have been the subject of a previous review (Andrews and Damjanov, 1994).

2.

DERIVATION OF CELL LINES

Primary culture of germ cell tumors of the testis was reviewed by Pera (1991). The two major classes of germ cell tumors of the testis are the seminomas and non-seminomas, and while there are no convincing reports of cell lines derived from the former, cell lines have been derived from most histological subtypes of non-seminomas: teratocarcinoma, embryonal carcinoma, yolk sac tumors, choriocarcinoma and differentiated teratoma. The majority of cell lines have been established directly from biopsy specimens, as disaggregated tissue fragments, under routine cell culture conditions employing standard media supplemented with fetal calf serum in plastic vessels. In some cases, feeder cell layer support has been used during establishment and subsequent cultivation of the cell lines, the rationale for this being that as feeder cell layers were required for establishment of diploid embryonic stem cells, their inclusion would provide an environment which was less selective against cell lines with extensive differentiation capacity. The available data do not permit a definitive assessment of this hypothesis but it is clear that some cell lines which are pluripotent definitely require feeder support, similar to stem cell lines derived from monkey blastocysts. Many investigators have found that cell lines from human germ cell tumors are much easier to passage as aggregates than as single cells. Culture at high density often favours stem cell renewal, whereas culture at lower density can lead to death or differentiation. Thus routine passage may be best achieved by gentle use of trypsin, scraping, or by dispase treatment. For culture at clonal density of embryonal carcinoma, the use of feeder cells such as Swiss 3T3 embryo fibroblasts is strongly recommended for most cell lines, whether or not they require feeder layers for routine passage. Extended serum-free cultivation of germ cell tumor cell lines is difficult. IGF-2 is critical for the survival of these cells (Biddle et al. 1988). Vitronectin is a serum protein necessary for adhesion and subsequent growth of embryonal carcinoma and is therefore a useful addition to serum-free media (Cooper and Pera, 1987). Some types of yolk sac carcinoma can survive and grow in the absence of feeder cell layers, probably due to their production of vitronectin and other factors. In this case, the only protein supplements used are

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transferrin, insulin, and albumin (Cooper and Pera, 1987). These same supplements may be used to support survival and slow growth of certain embryonal carcinoma cell lines after initial subculture in serum-containing medium; this approach is useful for experiments aimed at harvest and subsequent purification of proteins secreted by the cell lines.

3.

DO THE CELL LINES MODEL THE CLINICAL SPECTRUM OF GERM CELL TUMORS ?

Table 1 lists information relating to the derivation of the available cell lines from germ cell tumors of the testis. It may be noted that although seminoma has been present in many of the specimens from which lines have been derived, no cell line with the properties of seminoma has been described. No cell lines corresponding to carcinoma in situ, the precursor lesion of all types of germ cell tumors, are available either. Most classes of non-seminoma are well represented with the exception of choriocarcinoma, although there are a number of cell lines derived from gestational trophoblastic tumors (see Chapter 24). Most cell lines from non-seminomas are equivalent to embryonal carcinomas, that is, they are composed almost entirely of stem cells which do not differentiate under basal conditions, though some may respond to inducers of differentiation such as retinoic acid. A few lines show spontaneous differentiation in culture. Yolk sac carcinoma is not uncommon and there are several cell lines representative of the various histological subtypes of this category. There are cell lines derived from testicular primary tumors as well as metastatic lesions, and there are cell lines derived from patients prior to and after chemotherapy. It has not proven necessary in most cases to derive xenografts from the tumor prior to the establishment of cell lines. However, in several cases a mixed cell population from a given isolate has been cloned and found to contain cells with strikingly different properties. For example, the line Tera-2 was only found to contain pluripotent cells after it was subjected to clonal analysis, and the cell line GCT27 gave rise to two subclones, one pluripotent and the other nullipotent. Some cell lines would appear to represent differentiated but immortalized cell populations derived from pluripotent cells present in the original tumors (Andrews et al. 1996). In none of the lines reported have DNA analyses or other genetic markers been used to confirm the origin from a particular patient. The cell line NCCIT is of interest because while it is clearly pluripotent, its phenotype is not that of the classical embryonal carcinoma cell. It has long been speculated that seminoma may progress to embryonal carcinoma, and it is possible that this cell line represents an intermediate in that progression. In embryonal carcinoma, study of the cellular immunophenotype in vitro and in vivo using stem cell specific markers has provided a set of criteria for

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Table 1. Origins of cell lines derived from human germ cell tumors Cell line

Biopsy site/ patient age

Tumor diagnosis

Tera-1 lung/47 lung/22 Tera-2 SuSa testis130 833K abdomen/l9 1242B testis123 12550 testis122 1156QE testis/22 577MF forehead/24 577ML lung/24 577MR rpln/24 2044L rpln/24 2061H lung/19 2102Ep testis/23 2102ERP rpln/23 U1161 med/26 1218E testis/23 1428A testis/22 1242B testi/23 LICR-LON-HT1 testis/22 LICR-LON-HT3 testis/26 LICR-LON-HT5 testis/24 LICR-LON-HT-7 testis/32 LICR-LON-HT39/7 testis/40 ER testis 1GH testis 1HL testis 1075Hep liver 1075 Lung lung 1777N-Pr testis/25 rpln/25 1777N-RP 1777N-RPdiff rpln25 1685 M 1411HP testis/17 1411HRQ rpl/17 ITO testis/27 NEC-14 testis126 testis120 NEC-15 NEC-8 testis124 lung/39 HAZ-1 HAZ-2 lung/39 thigh/39 HAZ-3 rpln UM-TC-1

EC EC,T,YS EC,YS T, YS, SE EC, YS EC, CH EC T D IT D IT D EC, T, YS, SE

GCT 27 GCT 35 GCT 44

EC, T EC, T EC, YS

testis testis paln

EC, T EC, T EC, T EC,T,C,SE EC EC,T,SE EC,CH,SE EC, T EC, T EC, T EC EC, T EC,T,YS EC,T,YS EC,T, IT, SE EC, SE EC, YS EC EC,T,CH EC, YS EC,T,YS,SE EC, YS EC EC, T EC, T EC, T EC, CH EC, CH EC EC

Culture methodology D D D D,E D,E D,E D,E D,E D,E D,E D,E D,E D,E D,E D,E D,E D,E D,E D D D D X D,E D,E D,E D,E D,E D,E D,E D,E D,E E E

D D D

Reference Fogh and Trempe, 1975 Fogh and Trempe, 1975 Hogan et al. 1977 Bronson et al. 1980 Wang et al. 1980 Wang et al. 1980 Andrews et al. 1980 Wang et al. 1980 Wang et al. 1980 Wang et al. 1980 Wang et al. 1980 Wang et al. 1980 Wang et al. 1980 Wang et al. 1980 Sundstrom et al. 1980 Wang et al. 1980 Wang et al. 1981 Wang et al. 1980 Cotte et al. 1981 Cotte et al. 1981 Cotte et al. 1981 Cotte et al. 1981 Cotte et al. 1981 Harzmann et al. 1982 Harzmann et al. 1982 Harzmann et al. 1982 Bronson et al. 1983 Bronson et al. 1983 Bronson et al. 1983 Bronson et al. 1983 Bronson et al. 1983 Bronson et al. 1984 Vogelzanget al. 1985 Vogelzang et al. 1985 Sekiya et al. 1985 Sekiya et al. 1985 Sekiya et al. 1985 Sekiya et al. 1985 Oosterhuis et al. 1985 Oosterhuis et al. 1985 Oosterhuis et al. 1985 Grossman and Wedemeyer, 1986 Pera et al. 1987 Pera et al. 1987 Pera et al. 1987 Continued on next page

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Table 1. Continued Cell line GCT 46 GCT 48 GCT 72 H12.1 H12.5 H12.7 JHTK-1 NCC-EC-1 NCC-EC-2 NCC-EC-3 NCC-EC-IT 169A 218A 228A 240A

Biopsy site/ patient age

Tumor diagnosis

Culture methodology

lung testis testis (scrotum) testis testis testis testis testis123 testis/28 testis/44 med/24

EC, YS EC EC EC, T, CH, SE EC. T, CH, SE EC, T, CH, SE EC EC, T EC, SE EC,CH,T EC, YS, T EC, SE EC

D D D

X,D E E E E

Reference Pera et al. 1987 Pera et al. 1987 Pera et al. 1987 Casper et al. 1987 Casper et al. 1987 Casper et al. 1987 Yamazaki et al. 1987 Teshima et al. 1988 Teshima et al. 1988 Teshima et al. 1988 Teshima et al. 1988 Houldsworth et al. 1997 Houldsworth et al. 1997 Houldsworth et al. 1997 Houldsworth et al. 1997

Abbreviations: rpln, retroperitoneal lymph node; paln, para-aortic lymph node; med, mediastinal tumor; SE, seminoma; EC, embryonal carcinoma; IT, immature teratoma; T, teratocarcinoma (tumor containing EC stem cells plus differentiated tissue); YS, yolk sac carcinoma; CH, choriocarcinoma; E, explant of tumor fragments; D, dissociated tissue; X, cell line established from xenograft tumor in immunosuppressed mouse. 1GH and HL have identical DNA fingerprints.

the validation of the cell lines. Established stem cell markers include SSEA-3, SSEA-4, TRA-1-60, GCTM-2 and CD30 (Andrews et al. 1996; Pera et al. 1997). Some cell lines formerly regarded as embryonal carcinoma have been reassigned to other categories on the basis of marker expression. The identification of specific markers for yolk sac carcinoma and choriocarcinoma stem cells is less advanced, but there are many gene products whose expression is characteristic of the later stages of differentiation along these cell lineages (eg alphafetoprotein, human chorionic gonadotropin). Yolk sac or choriocarcinoma cell lines may express such markers, though they do not always do so.

4.

APPLICATIONS

The principal applications of cell lines from germ cell tumors of the testis are as models for human embryogenesis and in the study of tumor pathogenesis and sensitivity to treatment. Table 2 lists cell lines which have been used in recent studies as models of early human development. In terms of differentiation capacity, only a few cell lines have been shown to exhibit pluripotentiality, the ability to differentiate

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Table 2. Selected applications of cell lines in studies of differentiation Cell line

Phenotype

Differentiation in vitro Inducer Cell types

Xenograft histology/ differentiation

SuSa 8333 2102Ep

EC EC EC

NONE NONE LDC

NONE NONE UDC

ND EC EC

1411H NTera-2

YS EC

NONE RA

YS/EPO, AFP neurons + UDC

EC, YS/AFP, HCG EC, ENDO, NEURO

UDC UDC UDC neurons + UDC

Tera-2 clone 13

EC

NEC-14 GCT 27C-4 GCT 27X-1

EC EC EC

HMBA BMP-7 activin RA activin HMBA NONE LDC

GCT 35 GCT48 GCT 44

YS/PE

GCT 46 GCT 85 GCT 72 JHTK-1

YSPE YSPE YS/PE CH

EC/NEURO

basal basal basal basal dbcAMP

PE PE VYS/AFP + others TB/HCG TB/HCG

YST ND YST (solid form)/AFP CH/HCG

EC/AFP,HCG EC YST/AFP

Andrews et al. 1980 Andrews et al. 1980 Andrews et al. 1982 Damjanov and Andrews 1983 Lanford et al. 1991 Andrews et al. 1984 Andrews et al. 1990 Andrews et al. 1994 Caricasole et al. 1997 Thomson et al. 1984 Caricasole et al. 1997 Sekiya et al. 1990 Pera et al. 1989 Pera et al. 1989 Roach et al. 1994 Pera et al. 1987 Pera et al. 1987 Pera et al. 1987; Cooper and Pera, 1987;Roach et al. 1994 Pera et al. 1987; Roach et al. 1994 Pera, unpublished Pera et al. 1987; Roach et al. 1994 Yamazaki et al. 1987 Continued on next page

Pera

EC ECIAFP TC, ENDO, ECTO, MESO, YS, SYT/AFP, HCG

RA basal NONE basal

UDC NONE basal or endo neurons, UDC endo YS, TB NONE PE, VYS/ECM

Reference

Cell line

Phenotype

Differentiation in vitro Inducer Cell types

Xenograft histology/ differentiation

Reference

NCCIT

SE/EC

basal

EC Multiple UDC

Teshima et al. 1988 Damjanov et al. 1993

AFP,HCG RA

Testicular Germ Cell Tumors

Table 2. Continued

**Abbreviations: EC, embryonal carcinoma; ND, not done; LDC, low density culture; YS, yolk sac; EPO, erythropoietin expression; AFP, alphafetoprotein expression; HCG, human chorionic gonadotropin expression; RA, retinoic acid; UDC, unclassified differentiated cell, a cell which has lost characteristic stem cell markers but whose lineage is uncertain; ENDO, endodermal differentiation; NEURO, neuronal differentiation; HMBA, hexamethylene bisacetamide; MESO, mesodermal differentiation; SYT syncytiotrophoblast present; TB, trophoblast differentiation; PE, primitive endoderm; SE/EC; seminoma/embryonal carcinoma postulated intermediate; ECM, extracellular matrix production; CH, choriocarcinoma present (cytotrophoblast and syncytiotrophoblast); dbcAMP, dibutyryl cyclic AMP.

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into a wide variety of cell types. These include two derivatives of Tera-2, GCT 27X-1, and NCCIT; the latter has not been cloned and thus rigorously shown to contain pluripotent cells. Several well-characterized systems for the in vitro differentiation of pluripotent cells exist, based upon treatment with retinoic acid, hexamethylene-bisacetamide, or members of the transforming growth factor beta superfamily. The primary endpoints are neural or endodermal differentiation, but in most sytems studied there are a range of cells generated which, while clearly distinct from stem cells, have not been unambiguously identified. It is likely that these represent primitive progenitor cells for multiple tissue lineages; this area will provide a fertile ground for future research as basic embryological studies produce better markers for these cell types. Although it is not yet clear which cell type in the early embryo the embryonal carcinoma stem cell corresponds to, available evidence indicates that the pluripotent human embryonal carcinoma cells are close in marker expression and growth requirements to diploid embryonic stem cells derived directly from monkey blastocysts. Yolk sac carcinoma cells express markers of epithelia, lack characteristic embryonal carcinoma cell markers, and may synthesize transcription factors, extracellular matrix molecules, and secreted serum proteins characteristic of the secretory epithelial cells of the secondary yolk sac in the human embryo. The yolk sac carcinoma cell lines probably represent various stages in endodermal differentiation. Some may provide good models for paracrine interactions between the primitive endoderm and embryonic ectoderm, the tissue destined to give rise to the embryo proper. More recently cell lines have been used to study genes involved in germ cell tumor pathogenesis. The cell lines are somewhat limited as models, since they represent a late stage in the natural history of the tumors. Their increasing application in the molecular analysis of pathogenesis reflects difficulties with other approaches. For example, the mouse is of limited use as a model for human germ cell tumors, studies of familial susceptibility have not yet yielded good clues as to the critical genes involved, and there is a real need for experimental systems to test hypotheses generated from cytogenetic investigations. Table 3 lists some of the features of the available cell lines. The key genetic lesions in the development of germ cell tumors of the testis remain controversial, despite a good deal of molecular cytogenetic analysis, and there are no mechanistic studies. An isochromosome of 12p is found in most testicular germ cell tumors; and even in those which lack it, there is some form of overrepresentation of sequences on the short arm of chromosome 12. Most cell lines examined also have isochromosome 12p or some form of overrepresentation of 12p, usually in its entirety. The consistent retention of these lesions during extended propagation in vitro might suggest that they are of functional relevance to the growth of the cultured cells, but this point has not been systematically addressed. Specific genes mapping to the short arm of

Cell line

Drug sensitivity Parent Sublines

SuSa 833K

CP CP

2102Ep

CP

CP res CP res

Genetics and gene expression cyclin D2 Oncogene/others 12p wt p53+, Bax+, ki-ras+

i12p+

cycd2+

ki-ras+, GDF3+

i12pt

cycd2 +

i12p-

cycd2+

1411H NTera-2

Bax+, ki-ras+ GDF-3 +

Tera-2

LOH at llp, Wilms locus; ki-ras+ ki-ras+; LOH 11p

Tera-1

CP

CP res

i12pt

cycd2 +

Other features

References

Walker et al. 1990 Hsp 27 overexpressing clones; Dmitrovsky et al. 1990; Reilly, 1993; TNR expansion Chresta et al. 1996; Richards et al. 1996; Houldsworth et al. 1997; King et al. 1997 Oosterhuis et al. 1985; Dmitrovsky et al. 1990; Caricasole et al. 1998; Houldsworth et al. 1997 Sicinski et al. 1996; Henegariu et al. 1998 Dmitrovsky et al. 1990; RA resistant sublines; HOX gene cluster activation by RA Simeone et al. 1990; Moasser et al. 1996; in parent Sicinski et al. 1996; Boersma et al. 1997; Caricasole et al. 1998 Dmitrovsky et al. 1990; Smith and Rukstalis, 1995

Continued on next page

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Oosterhuis et al. 1985; Dmitrovsky et al. 1990; Smith and Rukstalis, 1995; Timmer-Bosscha et al. 1993

Testicular Germ Cell Tumurs

Table 3. Selected applications of cell lines in studies of drug response, gene expression and cancer genetics

Tera-2 clone 13

Other features

Relaxation of imprinting; GDF-3 + N-myc + ; ¯ diff

NEC-14 GCT27C-4

Genetics and gene expression cyclin D2 Oncogene/others 12p

136

Table 3. Continued Drug sensitivity Cell line Parent Sublines

CP,EP

GCT 27X-1

CP res

wt p53+, Bax+; GDF-3 +

GDF-3 +

i12p+

cycD2+

CD30, CD30 ligand+

i12p+

cycD2+

CD30, CD30 ligand +

GCT 35

CP

GDF-3+

cycD2+

CD30, CD30 ligand +

GCT 48

CP

GDF-3 +

cycD2+

CD30, CD30 ligand +

GCT 44

CP

GDF-3-

cycD2+

CD30 ligand+

GCT 46

CP

i12p-

cycD2+

References Caricasole et al. 1998; Rachmilewitz et al. 1996 Hasegawa et al. 1991; Hara et al. 1993 Pera et al. 1987 Chresta et al. 1996; Kelland et al. 1992; Henegariu et al. 1998 Pera et al. 1997; Caricasole et al. 1998; Pera, unpublished Henegariu et al. 1998; Pera et al. 1997; Caricasole et al. 1998; Pera, unpublished Pera et al. 1997; Pera unpublished Pera et al. 1997; Pera, unpublished Pera et al. 1997; Caricasole et al. 1998; Henegariu et al. 1998; Pera, unpublished Pera et al. 1987;

Pera

Pera, unpublished Continued on next page

Cell line

Drug sensitivity Parent Sublines

Genetics and gene expression cyclin D2 12p Oncogene/others

GCT 85 GCT 72

GDF-3 +

i12p+

NCCIT

GDF-3 +

i12p-

cycD2+ cycD2-

Other features CD30-, CD30 ligand+

References

Testicular Germ Cell Tumors

Table 3. Continued

Pera, unpublished Henegariu et al. 1998; Pera et al. 1997; Pera, unpublished Damjanov et al. 1993

Abbreviations: CP, cisplatin sensitive relative to other types of cultured human tumor or diploid fibroblast. Many if not all cisplatin-sensitive cell lines show varying degrees of cross sensitivity to other DNA-damaging agents; CP res, cisplatin resistant subline; EP, etoposide sensitive; wt53+, wild type p53 gene expressed; Bax+, Bax-2 gene expressed; ki-ras+, Kirsten ras gene expressed; GDF-3+, GDF-3 expressed; HOX, homeobox; i12p+, isochromosome of 12p present; cycD2+, cyclin D2 expressed; TNR, trinucleotide repeat; RA, retinoic acid; LOH, loss of heterozygosity; N-myc+, n-myc gene expressed and decreased on induction of differentiation; CD30, CD30 ligand+, CD30 and its ligand expressed.

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chromosome 12 which have been investigated in the pathogenesis of germ cell tumors include cyclin D2, the ki-ras oncogene, and the TGF-b superfamily member GDF-3. Cyclin D2 expression has been reported in a number of cell lines. Ki-ras is present in multiple copies and is expressed in the cell lines investigated, but there is no evidence that it is mutated. Many EC cell lines express GDF-3; this is a marker for immortalized pluripotent cells whose expression is conserved from mouse to man and which maps to 12p. CD30 is a tumor necrosis factor receptor superfamily member which is a specific marker for human embryonal carcinoma cells. It may play some role in stem cell renewal; and it is known to be expressed by some cell lines. Some cell lines retain other genetic lesions characteristic of the cancers in vivo, such as trinucleotide repeat expansion, loss of heterozygosity at certain loci, and relaxation of imprinting. Molecular pharmacologists have studied the cell lines to elucidate the basis of their unusual chemosensitivity. The sensitivity of the cells to chemotherapeutic agents has been well documented (Walker et al. 1987), and drug resistant sublines have been developed from several cell lines (see Table 3). Although the basis of this sensitivity is not yet clear, current thinking centers around the notion that the cells are particularly sensitive to apoptosis induced by DNA damage. This may be due to the low levels of XPA protein expressed by testis tumor cells (Köberle et al. 1999).

5.

PROBLEM AREAS

The main difficulties in working with cell lines from germ cell tumors of the testis relate to pluripotentiality. This is a property which may be stably preserved during many generations in cell culture, but as in the case of germ line competence in mouse embryonic stem cells, sub-optimal conditions may select for cells with limited differentiation capacity. Thus a degree of care in handling the cell lines is required, and it is advisable to check the phenotype from time to time using available stem cell markers such as TRA-1-60, the cell surface proteoglycan recognised by GCTM-2, or cell surface CD30. Many of the available cell lines have not been subjected to rigorous clonal analysis, so that they may consist of mixed populations of cells with different developmental properties. Certain lines appear to represent differentiated cell populations derived from pluripotent cells within the original isolate, as discussed above.

6.

SPECIAL FEATURES AND FUTURE PROSPECTS

Most biological studies relate to the capacity of cell lines to differentiate. The most useful lines in this regard are the Tera-2 derivatives N-Tera 2 and Tera2

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clone 13, GCT 27X-1, and NCCIT N-Tera2 and its clones have been particularly useful in the study of neuronal differentiation and there are sublines which are considered to be committed to this fate. However, as noted above, even among the few well studied pluripotent cell lines there are a number of differentiation pathways which remain uncharacterized. Cell lines exist which may be useful for the study of the genetic control of differentiation pathways. For example, there are derivatives of N-Tera2 which are resistant to retinoic acid induced differentiation. GCT 27C-4 and GCT 27X-1 are sister clones derived from the same parental strain which show different capacity for undergoing differentiation in vitro and in vivo.

REFERENCES Andrews PW et al. Int J Cancer 26: 269, 1980. Andrews PW Int J Cancer 30: 567, 1982. Andrews P. Dev Biol 103: 285, 1984. Andrews PW et al. Lab Invest 50: 147, 1984. Andrews PW et al. Differentiation 43: 13 1, 1990. Andrews PW and Damjanov. In: Cell lines from human germ-cell tumours. In Atlas of human tumour cell lines. eds. Hay R et al. New York, Academic Press, 1994. Andrews PW et al. Lab Invest 71: 243, 1994. Andrews PW et al. Int J Cancer 66: 806,1996. Biddle C et al. J Cell Sci 90: 475, 1988. Boersma AWM et al. Cytometry 21: 275, 1997. Bronson DL et al. Cancer Res 40: 2500,1980. Bronson DL et al. In vitro differentiation of human embryonal carcinoma stem cells. In: Teratocarcinoma Stem Cells L. Silver, G. Martin and S. Strickland, (eds.) Cold Spring Harbor Press, Cold Spring Harbor, 1983. Bronson DL et al. J Gen Virol 65: 1043, 1984. Caricasole AAD et al. Analysis of the response of human embryonal carcinoma cells to activin A. In: T Aono, H. Siguno, and W.W. Vale, (eds.) Inhibin, activin and follistatin: recent advances and future views. Springer-Verlag, New York , 1997. Caricasole AAD et al. Oncogene 16: 95 1980. Casper J et al. Int J Androl 10: 105, 1987. Chresta CM et al. Cancer Res 56: 1834, 1996. Cooper S and Pera, MF. Development 104: 565,1987. Cotte C et al. Cancer Res 41: 1422, 1981. Cotte C et al. In Vitro 18: 739, 1982. Damjanov I and Andrews PW. Cancer Res 43: 2190,1983. Damjanov I et al. Lab Invest 68: 220,1993. Dmitrovsky E et al. Oncogene 5: 543,1990. Evans MJ and Kaufman, MH. Cancer Surveys 2: 185,1983. Fogh J and Tempe, G. New human tumor cell lines. In Human Tumor Cells in Vitro. J. Fogh, (ed.) 115–159, Plenum, New York, 1975. Grossman Hara E et al. Oncogene 8: 1023, 1993. Harzmann R et al. J Urol 128: 1055,1982.

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Hasegawa T et al. Differentiation 47: 107, 1991. Henegariu 0 et al. JMol Med 76: 648, 1998. Hogan B et al. Nature 270: 515, 1977. Houldsworth J et al. Cell Growth &Differentiation 8: 293, 1997. Kelland LR et al. Cancer Res 52: 1710, 1992. King BL et al. Cancer Res 57: 209, 1997. Koberle B et al. Current Biology 9: 273, 1999. Lanford RE et al. In vitro Cell Dev Biol 27A: 205, 1991. Martin GR. Science 209: 768, 1980. Moasser MM et al. Differentiation 60:251, 1996. Oosterhuis JW et al. Int J Cancer 34: 133 1984. Oosterhuis JW et al. Cancer Genet Cytogenet 15: 99, 1985. Pera MF et al. Int J Cancer 40:334, 1987a. Pera MF et al. Cancer Res 47: 6810, 1987b. Pera MF et al. Differentiation 42:10, 1989. Pera MF. Testicular germ cell tumours. In: JRW Masters, (ed.), Human cancer in primary culture. Kluwer, Dordrecht, 1991. Pera MF et al. Lab Invest 76: 497, 1997. Pierce GB et al. Cancer: a problem of developmental biology. Prentice-Hall, Englewood Cliffs, New Jersey. 1978. Rachmlewitz J et al. Oncogene 13:1687,1996. Reilly PA et al. Cancer Genet. Cytogenet. 68: 114, 1993. Richards EH et al. Cancer Res 56: 2446,1996. Roach S et al. Exp Cell Res 215: 189, 1994. Sekiya S et al. Differentiation 29: 259, 1985. Sekiya S et al. Gynecol Oncol 36: 69, 1990. Sicinski P et al. Nature 384: 470, 1996. Simeone A et al. Nature 346: 763, 1990. Smith RC and Rukstalis DB. J Urol 153: 1684, 1995. Stevens LC. The origin and development of testicular, ovarian and embryo-derived teratomas. In Teratocarcinoma Stem Cells L. Silver, G. Martin and S. Strickland, (eds.) Cold Spring Harbor Press, Cold Spring Harbor, 1983. Sundstrom C et al. Acta Pathol Microbiol Scand Sect. A 88: 189, 1980. Teshima S et al. Lab Invest 59: 328, 1988. Thompson S et al. J Cell Sci 72: 37, 1984. Thomson JA et al. Proc Natl Acad Sci USA 927844,1995. Timmer-Bosscha H et al. Cancer Res 53: 5707, 1993. Walker MC et al. J Natl Cancer Inst 79: 213, 1987. Walker, MC et al. Eur J Cancer 26: 742, 1990. Vogelzang NJ et al. Cancer 55: 2584, 1985. Wang N et al. Cancer Res 40: 796, 1980. Wang N et al. Cancer Res 41: 2135, 1981. Yamazaki H et al. J Urol 137: 548, 1987.

Chapter 24 Choriocarcinoma

Vadivel Ganapathy1,2, Puttur D. Prasad1,2 and Frederick H. Leibach1 Departments of 1 Biochemistry and Molecular Biology and 2Obstetrics and Gynecology, Medical College of Georgia, Augusta, GA 30912-21 00. Tel: 001 -706- 721-7652; Fax: 001 -706- 721-6608

1.

INTRODUCTION

Trophoblast cells represent the first epithelium of embryogenesis and form the functional unit of the placenta. There are several types of trophoblast cells (1,2). Most of the chorionic villi are lined by two distinct trophoblast layers: an inner cytotrophoblast layer and an outer syncytiotrophoblast layer. The cytotrophoblasts in the inner layer are highly proliferative stem cells. The syncytiotrophoblast is a multinucleated cell layer formed by the fusion of differentiated cytotrophoblasts and represents the outermost layer of the placenta that is in direct contact with the maternal blood. The syncytiotrophoblast performs a number of functions essential for the maintenance of pregnancy and for the growth and development of the embryo. This includes the production of various peptide hormones that are specific for the placenta and a number of steroid hormones, principally progesterone. Another obligatory function of this cell layer is to transfer essential nutrients (including glucose, amino acids, vitamins and minerals) from the mother to the developing embryo and to remove metabolic waste products. A distinct subset of chorionic villi, identified as anchoring villi, are involved in the attachment of the placenta to the uterine wall. The cytotrophoblast stem cells lining these anchoring villi give rise to extravillous cytotrophoblasts that are highly migratory, proliferative, and invasive. These cells migrate out of the tips of anchoring villi and invade the uterine decidua, thus facilitating the attachment of the placenta to the uterine wall. Choriocarcinoma is an uncommon and highly malignant tumor of trophoblast cells. Choriocarcinoma consists of two distinct forms: gestational and

J.R. W Masters and B. Palsson (eds.), Human Cell Culture Vol. 11, 141 –147. © 1999 Kluwer Academic Publishers. Printed in Great Britain.

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nongestational (3-5). Gestational choriocarcinoma arises from or in association with a gestational event. In this form, the placenta is the site of origin of the tumor. The incidence increases after spontaneous abortions or a molar pregnancy or ectopic pregnancy. Neonatal or infantile choriocarcinoma is a rare form of gestational choriocarcinoma that occurs in newborns and infants. In these cases, the placenta is the primary site of the tumor, but it metastasizes to other organs of the developing fetus and presents as choriocarcinoma in the neonatal or infantile stage. Nongestational choriocarcinoma is unrelated to pregnancy and occurs in extraplacental tissues of a nongravid person (male or female) due to gonadal or extragonadal germ cell tumor. Testis in the male and ovary in the female are the principal sites of nongestational choriocarcinoma (see Chapters 22 and 23). Extragonadal sites of nongestational choriocarcinoma include mediastinum, retroperitoneum, esophagus, stomach (see Chapter 29), lung, kidney, and bladder. In all cases of choriocarcinoma, gestational or nongestational, the tumor is characterized by the secretion of chorionic gonadotropin, resulting in increased levels in the serum. Other trophoblast-specific markers such as the pregnancy-specific glycoprotein and the placental isoform of alkaline phosphatase provide additional tools for diagnosis and monitoring of choriocarcinoma.

2.

MAINTENANCE AND CULTURE CONDITIONS

The first report on the successful transfer and maintenance of choriocarcinoma was by Hertz (6) in 1959, who transplanted tissue taken at autopsy from a cerebral metastasis to the cheek pouch of the hamster. Recipient hamsters were treated with cortisone at the time of transplantation and every third day thereafter for two weeks. Serial transfers could then be made for several generations in the hamster without cortisone treatment. Transfers of the tumor tissue subcutaneously in rats in the right flank area failed to grow with cortisone treatment alone. However, significant growth of the tumors was observed in the rat if the host had been irradiated as well as treated with cortisone, although the rate of tumor growth in the rat was much lower than that in the hamster. One of the choriocarcinomas maintained in the hamster cheek pouch by Hertz was then used by Patillo and Gey (7) to establish the first choriocarcinoma cell line BeWo. Based on the known nutritional requirements of the normal placenta, Patillo and Gey (7) used a culture medium containing high glucose levels. The culture medium was Waymouth’s MB752 with 5 g/L glucose, 40% Gey’s balanced salt solution and 10% placental cord serum. The final glucose concentration in the medium was 3.4 g/L. Reconstituted tropocollagen or human fibrinogen clotted with thrombin was used as the

Choriocarcinoma

143

matrix. The tumor specimens taken from the hamster cheek pouch were dissected in the presence of the culture medium and approximately 1 mm2 fragments were used for culture. One tumor colony from a single culture gave rise to the BeWo cell line. Kohler and Bridson (8) used the same choriocarcinoma tissue to develop 8 different clonal choriocarcinoma cell lines (JEG 1-8). The culture medium in this case was Ham’s F10, containing 13.5% horse serum and 3.2% fetal bovine serum. Tumor tissue fragments cultured in this growth medium were dispersed using trypsin and EDTA and used for the establishment of the cell line. The Jar cell line was established from a trophoblastic tumor of the placenta (9). The original culture medium for the Jar cell line was the same as that used for the establishment of the BeWo cell line (7). Other choriocarcinoma cell lines were cultured in either RPMI-1640 medium or Ham’s F10 medium, supplemented with 20% fetal calf serum (10-14). In our laboratory, we routinely culture choriocarcinoma cells using the following growth media (15,16): RPMI-1640 medium supplemented with 10% fetal bovine serum for Jar cells, Dulbecco’s Modified Eagle Medium/Ham’s nutrient mixture F12 (1:1) supplemented with 10% fetal bovine serum for BeWo cells, and minimum essential medium supplemented with 10% fetal bovine serum for JEG-3 cells.

3.

CONTINUOUS CELL LINES

The continuous cell lines derived from gestational and nongestational choriocarcinoma are listed in Table 1. BeWo, Jar, and JEG cell lines were derived from gestational choriocarcinoma (6-9). The other choriocarcinoma cell lines (SCH, IMa, JHTK-1, and T3M-3) were derived from nongestational choriocarcinoma (10-14). Using the original BeWo culture (7), Wice et al. (17) have isolated a clonal cell line, called BeWo b30, which maintains the morphological, biochemical, and endocrine characteristics of the parental cells. There are also reports in the literature concerning the establishment of Table 1 Continuous cell lines derived from choriocarcinomas Cell line

Patient sex/age

Primary site

Metastatic site

Tumor Specimen Culture site method

Reference

BeWo JEG Jar SCH IMa

F F F/24 M/46 F/25

Placenta Placenta Placenta Stomach Ovary

Brain Brain

Brain Brain Placenta Omentum Paraaortic lymph node Testis

X/D X/D D D X

(6,7) (6,8) (9) (10,11) (12)

X/D X

(13) (14)

Omentum Paraaortic lymph node

JHTK-1 M/45 Testis T3M-3 X, xenograft; D, dispersion of the original tumor tissue

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additional choriocarcinoma cells (e.g., HCCM-5 (18) and NUC-1 (19)). Of these continuous cell lines, three are commercially available from the American Type Culture Collection (Rockville, MD, USA): BeWo (the original cell line developed by Patillo and Gey), Jar and JEG-3. All of the continuous choriocarcinoma cell lines, listed in Table 1, produce chorionic gonadotropin, but there are quantitative differences (7-14,20-22). In addition to chorionic gonadotropin, BeWo, Jar, and JEG cells produce placental lactogen and progesterone (9,23,24), SCH cells express the placentaspecific alkaline phosphatase (11), and T3M-3 cells produce progesterone (14). The expression of the human class I histocompatibility antigens (HLAs) has been studied (25-27). JEG cells express HLA-G whereas Jar cells do not. BeWo cells express HLA-G at very low levels. Unlike other classes of HLAs, HLA-G is nonpolymorphic and its expression is restricted to the extravillous cytotrophoblasts in the first trimester placenta. Thus, JEG cells resemble extravillous cytotrophoblasts with respect to HLA expression. The other class I histocompatibility antigens HLA-A, HLA-B and HLA-C are expressed at negligible levels in most choriocarcinoma cells.

4.

COMPARISON OF MORPHOLOGICAL FEATURES BETWEEN CELL LINES AND THE ORIGINAL TUMORS

The morphological characteristics are listed in Table 2. All of the choriocarcinoma cell lines thus far established resemble cytotrophoblasts morphologically. Fused, multinuclear, syncytiotrophoblasts rarely form. There are, however, some notable morphological differences between the cell lines derived from gestational choriocarcinomas and the cell lines derived from nongestational choriocarcinomas. Gestational choriocarcinoma cell lines have more numerous cytoplasmic organelles such as mitochondria and rough endoplasmic reticulum. Exposure of BeWo or JHTK-1 cells to CAMP can induce morphological changes that are consistent with differentiation of cytotrophoblasts into syncytiotrophoblast-like cells. The clonal cell line BeWo b30 differentiates in response to CAMP into a polarized syncytiotrophoblast with biochemically and morphologically distinguishable apical and basolateral membranes (17,28).

5.

KARYOLOGY

The modal number of chromosomes in the choriocarcinoma cell lines is as follows: 86 in BeWo, 78 in JEG-1, 71 in JEG-3, 56 in IMa, and 66 in T3M-3. The chromosome numbers in the JHTK-1 cell line range between 107 and 141.

The tumor of origin was a cerebral BeWo: Grayish-white cystic cells characteristic of cytotrophoblasts; no detectable differentiation to metastasis and the derived xenograft syncytiotrophoblasts in log phase of growth. was morphologically similar. JEG: Several clonal cell lines (JEG 1-8) were derived from the same xenograft which served as the source for BeWo cells. Most JEG clones grow as a monolayer. Transplantation of these clonal cells back into hamster cheek pouch resulted in large cystic structures with necrotic centers without invasion of blood vessels.

Xenograft of the original tumor into hamster cheek pouch resulted in a richly vascularized tissue with a marked tendency to hemorrhagic necrosis; formation of cytotrophoblasts and syncytiotrophoblasts in broad sheets; presence of abundant mitoses; absence of cellular infiltration into the wall of the hamster cheek pouch; the tumor tissue could be peeled away from the surrounding host tissues with practically no hemorrhage at points of separation.

SCH Characteristic features of cytotrophoblasts with very little differentiation into syncytiotrophoblasts. Intermediate cells, morphologically between cytotrophoblasts and syncytiotrophoblasts, were also seen.

The original patient material from a metastatic omental lesion of gastric choriocarcinoma showed histological features characteristic of choriocarcinoma coexisting with a small area of adenocarcinoma producing mucin.

Transplantation of SCH cells into nude mice produced tumors which contained chorionic gonadotropin-positive mono- and multinuclear cells. Intermediate and syncytiotrophoblast cells were present in the xenograft much more frequently than under in vitro cell culture conditions.

IMa: Predominantly small polygonal cells with a prominent nucleus and a small number of multinuclear giant cells.

The tumor of origin was derived from a metastatic lesion of paraaortic lymph nodes (primary tumor was in ovary) which showed histological characteristics of a dysgerminoma coexistent with choriocarcinoma.

Transplantation of IMa cells into hamster cheek pouch produced tumors with histological features of choriocarcinoma. The tumors consisted of cytotrophoblast cells in a sheet-like arrangement and a small number of syncytiotrophoblast cells.

Choriocarinoma

Table 2 Morphological features of choriocarcinoma continuous cell lines in vitro and in vivo Cell line Original tumor Xenograft

Continued on next page

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Table 2 (continued) Cell line

Original tumor

Xenograft

JHTK-1: Epithelial cells with poorly developed rough endoplasmic reticulum and very few mitochondria with characteristic features of cytotrophoblasts.

Transplantation into nude mice produced tumors with characteristics of choriocarcinoma. The tumors contained a mixture of cytotrophoblasts and syncytiotrophoblasts.

T3M-3: Epithelial cells with prominent nuclei. Cells grow as a monolayer.

Transplantation of T3M-3 cells into nude mice produced tumors which consisted of closely packed, large, round cells. Mitoses were numerous.

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REFERENCES 1. 2. 3. 4.

Graham CH, Lala PK. Biochem Cell Biol 70: 867, 1992 Lala PK, Hamilton GS. Placenta 17: 545, 1996 Dehner LP. Am J Surg Pathol 4: 43,1980 Shanklin DR. In Tumors of the Placenta and Umbilical Cord, p. 30. B.C. Decker Inc., Philadelphia, 1990 5. Belchis DA, Mowry J, Davis HJ. Cancer 72: 2028, 1993 6. Hertz R. Proc Soc Exp Biol Med 102: 77,1959 7. Patillo RA, Gey GO. Cancer Res 28: 1231, 1968 8. Kohler PO, Bridson WE. J Clin Endocrinol 32: 683, 1971 9. Patillo RA, Ruckert A, Hussa R et al. In Vitro 6: 398, 1971 10. Oboshi S, Yoshida K, Seido T et al. Proc 31st Annual Meeting Japanese Cancer Assoc 115, p. 59. Tokyo: Japanese Cancer Assoc 1972 11. Kameya T, Kuramoto H, Suzuki K et al. Cancer Res 35: 2025,1975 12. Sekiya S, Kaiho T, Shirotake S et al. In Vitro 19: 489, 1983 13. Yamazaki H, Kotera S, Ishikawa H et al. J Urol 137: 548, 1987 14. Okabe T, Sasaki N, Matsuzaki M et al. Cancer Res 43: 4920,1983 15. Cool DR, Leibach FH, Bhalla VK et al. J Biol Chem 266: 15750, 1991 16. Jayanthi LD, Ramamoorthy S, Mahesh VB et al. J Biol Chem 269: 14424, 1994 17. Wice B, Menton D, Geuze H, Schwartz AL. Exp Cell Res 186: 306, 1990 18. Nakamoto 0. Asia-Oceania J Obstet Gynecol 6: 177, 1980 19. Suzumori K, Sugimoto Y, Suzumori K et al. Asia-Oceania J Obstet Gynecol 9: 309, 1983 20. Patillo RA, Gey GO, Delfs E, Mattingly RF. Science 159: 1467, 1968 21. Azizkhan JC, Speeg KV Jr, Stromberg K, Goode D. Cancer Res 39: 1952, 1979 22. Sekiya S, Kaiho T, Shirotake S et al. Am J Obstet Gynecol 146: 57, 1983 23. Patillo RA, Hussa RO, Delfs E et al. In Vitro 6: 205, 1970 24. Kohler PO, Bridson WE, Hammond JM et al. Acta Endocrinol Suppl KBH 153: 137, 1971 25. Ellis SA, McMichael AI. J Immunol 144: 731,1990 26. Kovats S, Main EK, Librach C, et al. Science 248: 220, 1990 27. Kato M, Ohashi K, Saji F, Wakimoto A, Tanizawa O. Placenta 12: 217, 1991 28. Furesz TC, Smith CH, Moe AJ. Am J Physiol 265: C212, 1993

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Chapter 25 Thymomas and Thymic Cancers

H.K. Müller-Hermelink and Alexander Marx Department of Pathology, University of Würzburq, Luitpoldkrankenhaus, Joseph-SchneiderStrab e 2, 97080 Würzburg, Germany. Tel: 0049-931-201-5420; Fax: 0049-931-201-3505

1.

INTRODUCTION

The first description of epithelial tumors of the thymus as thymomas was by Bell in 1917 (58). Thymic epithelial tumors (TETs) have to be distinguished from neuroendocrine tumors, lymphomas, sarcomas or thymic germ cell tumors, as some of these are also epithelial in origin. The first classification of TETs (1, 2) used the ratio of lymphocytes to epithelial cells as the main histological criterion, but when tumor stage was taken into account, this classification was of no independent prognostic value (3). Levine and Rosai (1978) suggested a classification (4) that used invasiveness as the main criterion (5), and distinguished encapsulated “benign thymomas” from invasive “malignant thymomas”. Malignant thymomas were subclassified as follows: 1. Category I malignant thymomas, when the neoplastic epithelial cells are normal or slightly atypical 2. Category II malignant thymomas, when the neoplastic cells are moderately or severely atypical. Category II malignant thymomas are now called thymic carcinomas. Benign thymomas and category I malignant thymomas retain characteristics of the thymus (6). In contrast, thymic carcinomas do not retain the characteristics of normal thymus cells, and are classified like other tumors (Table 1) (7-9). Category I malignant thymomas are the most frequent TETs. We introduced a modified classification for these tumors (10,11), which takes as the main criterion the histological resemblance of the neoplastic epithelial cells to counterparts in the normal thymus, distinguishing a medullary and cortical line

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of differentiation. In contrast to previous histological classifications, cortical differentiation was an independent prognostic factor for invasiveness and outcome (12-14). Certain thymoma subtypes are associated with paraneoplastic myasthenia gravis (15,16). Recently, agreement has been reached by a WHO committee for the classification of thymic epithelial tumors, as shown in Table 1 (Rosai and Sobin, 1999) (59).

2.

PRIMARY CULTURES

Short term primary cultures have been established from most types of human thymic epithelial tumors, including benign thymomas, malignant thymomas and thymic carcinomas. Such cultures have been used for cytogenetic studies (17-23), cell biological investigations (24-30), electrophysiology (31) or the identification of thymoma proteins (32,33). As for non-neoplastic human thymic epithelial cells (24,34-41), explant techniques as well as protease digestion strategies producing single cell suspensions have been applied to thymomas (28,30,32,33,42). Fibroblast overgrowth is a major problem when long term cultures or the significant expansion of cells are required. To circumvent this problem five Table 1 Classification of thymic epithelial tumors according to Levine and Rosai (1978), with modifications for benign and category I malignant thymomas (15) and thymic cancers (9) Classification

WHO type

Histological subtype

Benign thymoma

A B B1 B2 B3 C

Medullary thymoma1 Mixed thymoma1 Predominantly cortical thymoma2 Cortical thymoma Well differentiated thymic carcinoma Squamous cell cancer3 Basaloid cancer4 Mucoepidermoid cancer3 Adenosquamous cancer 3 Adenocarcinoma5 Small cell/neuroendocrine cancer5,6 Lymphoepithelioma-like cancer5 Sarcomatoid cancer5 Clear cell cancer5 Large cell cancer5 Undifferentiated cancer5

Malignant thymoma, category I Malignant thymoma, category II

1Some otherwise typical medullary or mixed thymomas are invasive but non-metastatic and behave in a benign manner. 2Also called "organoid thymoma" (14). 3Low or high grade. 4Low grade. 5High grade. 6Neuroendocrine tumors are considered as a separate category according to the recent WHO classification

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different strategies have been applied in non-neoplastic thymic epithelial cultures: 1. Growth in serum free media (34,43-48). 2. Growth in a serum-containing medium with D-valine replacing L-valine (40,41,49). 3. Elimination of fibroblasts by EDTA washing and subculture on mitomycin C-treated 3T3 mouse fibroblast feeder layers (24). 4. Active depletion of fibroblasts from mixed thymic stromal cultures using complement activating cytotoxic antibodies (50). 5. Sorting thymic epithelial cells with magnetic beads or FACS using monoclonal antibodies against MHC class II molecules after enzymatic digestion of deoxyguanosine-treated thymic tissue (51-53). In thymomas these techniques have not been compared systematically. Positive sorting of thymoma epithelial cells using anti-MHC class II coated magnetic beads is impossible in most cases as thymoma cells usually express low levels or are negative for MHC class II antigens (15,54). Primary thymoma epithelial cultures proliferate less well in vitro than nonneoplastic thymic epithelial cells (24). In our experience this is true for serumfree media as well as for serum-containing media with either conventional amino acids or with D-valine replacing the usual L-valine. While a serum-free medium designed for keratinocytes (Keratinocyte-SFM medium, 17005-034, including EGF and Bovine Pituitary Extract; GIBCOBRL) efficiently promotes growth of non-neoplastic thymic epithelial cells and delays fibroblast proliferation for up to four passages after explant culture, serum-free media in our hands have been inefficient for the establishment of primary thymoma cultures. Cortical thymomas and well differentiated thymic carcinomas benefit from fetal calf serum (5-15%), although fibroblast overgrowth occurs quickly. Our preferred medium for explant cultures of thymoma epithelial primary cultures is as follows: MEM containing D-valine (Gibco), 10 mM HEPES, 10% heat-inactivated FCS, 2 mM glutamine, 10 ng/ml EGF, 5 µg/ml insulin, 100 U/ml penicillin and 100 µg/ml streptomycin. To produce explant cultures, thymoma tissue is minced into pieces of approximately 1 mm3 and agitated in culture medium to remove thymocytes. The explants are placed in plastic cell culture dishes and left without moving the dishes for four days. Thereafter half of the medium is changed twice a week. While this strategy is usually adequate to support the in vitro growth of normal thymus and mixed and cortical thymomas, epithelial cell outgrowth from tissue fragments is often negligible in tumors with a high content of fibrous stroma, including well differentiated thymic carcinoma and category II malignant thymomas. In such cases, outgrowth is often increased by stirring thymoma fragments with a trypsin/EDTA solution (0.1 mg/ml and 10 mg/ml, respectively) in PBS for up to 3h at room temperature. An additional overnight treatment at 37°C with collagenase Type IA (10 U/ml; Sigma) made up

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in DMEM/2% newborn calf serum (34) may further improve the yield of thymic epithelial cells, but this has not yet been investigated in thymomas. While neither serum-free conditions nor D-valine containing media in our hands prevent the overgrowth of fibroblasts in thymoma cultures, complement dependent depletion of fibroblasts from thymoma-derived mixed stromal cultures has resulted in almost pure epithelial cell cultures using the protocol given below: 1. Trypsinize thymic stromal cells (5 × 105 or more). 2. Wash twice in PBS/1mM EDTA, transfer to an Eppendorff, spin down. 3. Add 200 µl of anti-fibroblast mAbAS02 (Dianova, Hamburg) diluted 1:5 with PBS. 4. Rotate for 45 min in a cool room (4°C) to load fibroblasts with antibodies. 5. Wash twice as before. 6. Add 200 µl guinea pig complement (Dianova, Hamburg) diluted 1:3.5 with PBS and leave cells for 45 minutes at 37°C. 7. Wash twice as before. 8. Culture remaining cells as usual and check for purity e.g. by immunocytochemistry or FACS. In principle, the method also works with adherent cells but the quantities of mAbAS02 and complement are much higher than required for cells in suspension. Magnetic beads (five beads per cell) coated with mAbAS02 have also been used for depleting fibroblasts from mixed stromal cultures. Long-term epithelial cell cultures from thymomas may be difficult to establish because the tissue comes from adults. Both mouse (51,52) and human studies with non-neoplastic human thymic epithelial cells have used tissue from neonatal or infantile thymuses (24,29,37,38,41) or fetal thymic tissue (36,41). No attempts have been made to immortalize adult normal or neoplastic thymic epithelial cells.

3.

CONTINUOUS CELL LINES

A few cloned human thymic epithelial cell lines established from nonneoplastic infantile, neonatal or fetal thymic tissue have been reported (37,41). The lines reported by Fernandez et al. (1994) are available from the originator’s laboratory. In contrast, no continuous thymoma epithelial cell lines have been described. The only continuous cell line derived from a thymic epithelial tumor, Ty-82, was established from a pleural effusion in a 22 year old female. The primary was a high grade (G4) thymic carcinoma (category II malignant thymoma, T4N1M1) (55). As there was no indication of a germ cell origin, the tumor from which Ty-82 was derived was assumed to be of thymic epithelial cell origin and classified as undifferentiated thymic carcinoma (18). The tumor

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exhibited a solid growth pattern in a fibrous stroma with no recognizable differentiation. Explants from 150 ml of pleural effusion were grown in RPMI 1640 with 20% FCS and 10% human cord serum at 37ºC in 5% CO2 with media changes every 3 days. Ty-82 cells in vitro grow in suspension in glass Petri dishes or in suspension culture flasks (Greiner, Solingen, Germany), but adhere to Falcon 3013 and 3024 flasks (Becton Dickinson). The cell line is available from the originator. Ty-82 cells exhibit a primitive blastoid morphology with round nuclei and prominent nucleoli, and lack desmosomes, tonofilaments and neurosecretory granules by electron microscopy. The cells are positive for a-naphthyl butyrate esterase and acid phosphatase and are negative for peroxidase, Sudan Black B, chloroacetate esterase and PAS. A small proportion of the cells express epithelial membrane antigen (EMA) and are positive for Ki-67 antigen. Ty-82 cells also react with an antibody specific for subcapsular thymic cortical epithelium (56). The cells are negative for the EBV antigen EBNA and other markers (cytokeratins, CD57, CEA, GFAP, S100, Desmin, MHC molecules, ICAMs, CD30, and various markers of immature and mature T and B cells, monocytes and histiocytes) (55). Ty-82 cells grew in 4 of 5 nude mice inoculated. Tumors reached at least 1 cm in diameter within 43-53 days. The histological features of the xenotransplants were similar to those of the original tumor. Compared to Ty-82 cells in vitro, the xenotransplants exhibited a higher frequency of EMA positive cells (14 versus 8%) and a small fraction of cells expressing cytokeratins (like the primary tumor). The cell line was shown to have the same t(15;19)(q12;p13) translocation as the primary tumor (18). This translocation is probably identical to the translocation described in two other independent cases of high grade thymic carcinoma, from which permanent cell lines could not be established. These latter cases were described as either undifferentiated carcinoma (19) or high grade mucoepidermoid carcinoma with extensive metastases (20). Therefore, the t(15;19)(q12;p13) translocation seems to be a non-random event, not found in other types of cancer, that might be of significance in the development of this type of thymic carcinoma. The 5-82 cell line may not be the ideal model for the study of normal functions of the human thymus. Cloned human thymic epithelial cell lines derived from non-neoplastic fetal or neonatal thymuses might be a better tool in this respect (41). However, even normal thymic epithelial cells after a short time in primary cell culture lose their capacity to fully promote the positive selection of thymocytes in vitro (57). Consequently, organ culture systems might be required to investigate the complex physiology of the human thymus.

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REFERENCES 1. 2. 3. 4. 5. 6. 7. 8. 9.

Bematz PE et al. J Thoracic Cardiovasc Surg 542: 424, 1961. Lattes R. Cancer 15: 1224, 1962. Lewis JE et al. Cancer 60: 2727, 1987. Levine GD, Rosai J. Hum Pathol 9: 495, 1978. Yamakawa Y et al. Cancer 68: 1984, 1991. Kirchner T et al. Am J Surg Pathol 16: 1153,1992. Snover DC et al. Am J Surg Pathol 6: 451, 1982. Suster S, J Rosai. Cancer 67: 1025, 1991. Shimosato Y. Epithelial tumors of the thymus, A Marx and HK Muller-Hermelink, Eds. Plenum Press, New York, London, p. 9 1997. 10. Kirchner T, Müller-Hermelink HK. Progress in Surgical Pathology, CM Fenoglio-Preiser, M Wolff and F Rilke, Eds. Field and Wood, Philadelphia, 1989. 11. Müller-Hermelink HK, Marx A, Kirchner T. Recent Advances in Histopathology, P Anthony and MacSween R, Eds. Edinburgh, Churchill Livingstone, p. 49 1994. 12. Kuo TT, Lo SK. Hum Pathol 24: 766,1993. 13. Pescarmona E et al. Am J Clin Pathol 93: 190, 1990. 14. Quintanilla Martinez L et al. Hum Pathol 24: 958, 1993. 15. Muller-Hermelink HK et al. Arch Histol Cytol 60: 9, 1997. 16. Marx A et al. Virchows Archiv 430: 355, 1997. 17. Kristoffersson U et al. Cancer Genet Cytogenet 41: 93, 1989. 18. Kubonishi I et al. Cancer Res 51: 3327, 1991. 19. UR Kees et al. Am J Pediatr Hematol Oncol 13: 459, 1991. 20. Lee AC et al. Cancer 72: 2273, 1993. 21. Dal Cin P et al. Genes Chromosomes Cancer 6: 243, 1993. 22. Dal Cin P et al. Cancer Genet Cytogenet 89: 181, 1996. 23. Deminatti MM et al. Ann Genet 37: 72, 1994. 24. Singer KH et al. Hum Immunol 13: 161, 1985. 25. Papadopoulos T et al. Virchows Arch B Cell Pathol Incl Mol Pathol 56: 363, 1989. 26. Talle MA et al. Thymus 18: 169, 1991. 27. Marx A et al. Thymus 23: 83, 1994. 28. Gilhus NE et al. J Neuroimmunol 56: 65, 1995. 29. Screpanti I et al. J Cell Biol 130: 183, 1995. 30. Schultz A et al. Verh Dtsch Ges Path 80: 250, 1996. 31. Siara J et al. Neurology 41: 128, 1991. 32. Marx A et al. Am J Pathol 134: 865, 1989. 33. Marx A et al. Am J Pathol 148: 1839, 1996. 34. Rimm IJ et al. Clin Immunol Immunopathol 31: 56, 1984. 35. Galy AH et al. Cell Immunol 124: 13, 1989. 36. Mizutani S et al. Acta Paediatr Jpn 29: 539, 1987. 37. Galy AH, Spits H. J mmunol 147: 3823, 1991. 38. Galy et al. Cell Immunol 129: 161, 1990. 39. Le PT, Singer KH. Int J Clin Lab Res 23: 56, 1993. 40. Dalloul AH et al. Blood 77: 69, 1991. 41. Femandez E et al. Blood 83: 3245,1994. 42. Zhang J et al. J Exp Med 179: 973,1994. 43. Schreiber L et al. Immunology 74: 621, 1991. 44. Meilin A et al. Scand J Immunol 42: 185, 1995. 45. Meilin A et al. Int J Immunophannacol 19: 39, 1997.

Thymomas and Thymic Cancers 46. 47. 48. 49. 50. 51. 52. 53. 54. 55. 56. 57. 58. 59.

Ropke C, Elbroend J. Dev Immunol 2: 111,1992. Andersen A et al. Scand J Immunol38: 233,1993. Pedersen H et al. Immunol Lett 41: 43, 1994. Dalloul AH et al. Eur J Immunol 21: 2633,1991. Singer KH et al. J Invest Dermatol 94: 85S, 1990. Jenkinson EJ et al. J Exp Med 176: 845,1992. Anderson G, Jenkinson EJ. Immunology Today 18: 363, 1997. Oostenvegel M et al. Immunity 6: 351, 1997. Willcox N et al. Am J Pathol 127: 447, 1987. Kuzume T et al. Int J Cancer 50: 259, 1992. Takeuchi T et al. Virchows Arch A PatholAnat Histopathol 419: 147, 1991. Anderson G et al. Eur J Immunol 27: 1838,1997. Bell ET. J Nerv Ment Dis 45: 130, 1917. Rosai J, Sobin L. In WHO Int Classification of Tumors. Springer-Verlag, 1999.

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Chapter 26 Kaposi’s Sarcoma

Christopher Boshoff Department of Oncology, University College London, 91 Riding House Street, London WlP 6BT, UK. Tel: 0044-1 71-504-9557; Fax: 0044-1 71-504-9555; E-mail: c. [email protected]

1.

INTRODUCTION

For over 100 years, Kaposi’s sarcoma (KS) remained a rare curiosity to clinicians and cancer researchers, until it shot to prominence as the sentinel of what we now call AIDS. Classic KS occurs predominantly in elderly male patients of Southern European ancestry (1). A high frequency is also seen in Israel and other Middle Eastern countries. It is not known why this form of the disease is generally not as aggressive as the form originally described by Kaposi, but there may be immunological reasons. In some equatorial countries of Africa, KS has existed for many decades, therefore preceding HIV (known as endemic KS) (2). This form is found in younger patients as well as the elderly. The male :female ratio is greater than 3 : 1 and it is generally a more aggressive disease than classic KS (3). During the past 20 years, the incidence of KS among renal transplant recipients and other patients receiving immunosuppressive therapy has increased (known as post-transplant KS or iatrogenic KS) Patients of Mediterranean, Jewish or Arabian ancestry are over-represented among immunosuppressed patients who develop KS after a transplant (1), indicating that those born in countries where classic KS occurs continue to be at risk of developing KS even if they migrate to “low-risk” countries. These data suggested that there is a genetic predisposition or environmental factor (possibly infectious agent) responsible for KS development.

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In 1981, the US Centers for Disease Control and Prevention (CDC) became aware of an increased occurrence of two rare diseases in young gay men from New York City (NY, USA) and California (4): Kaposi’s sarcoma and Pneumocystis carinii pneumonia (PCP). This was the beginning of what is today known as the AIDS epidemic and AIDS-KS is today the most common form of KS.

2.

KAPOSI’S SARCOMA HISTOGENESIS AND CLONALITY

Histologically, KS is a complex lesion. In early KS lesions, which normally appear on the skin, there is a collection of small, irregular endothelium-lined spaces that surround normal dermal blood vessels and these are accompanied by a variable, inflammatory infiltrate of lymphocytes (patch-stage). This stage is followed by the expansion of a spindle-celled vascular process throughout the dermis. These spindle cells form slit-like, vascular channels containing erythrocytes (plaque-stage). The later nodular-stage KS lesions are composed of sheets of spindle cells, some of which are mitotic, and slit-like vascular spaces with areas of hemosiderin pigmentation. The spindle cells form the bulk of established KS lesions and are therefore thought to be the neoplastic component, but there is still some controversy over the histogenesis of spindle cells. Although the majority of the spindle cells stain positive for endothelial cell markers including factor VIII and CD34, some cells express proteins characteristic of smooth muscle cells, macrophages or dendritic cells (5, 6). Some spindle cells simultaneously express antigenic determinants characteristic of several different cell types, suggesting that KS spindle cells might be derived from a pluripotent mesenchymal progenitor cell or a mesenchymal cell experiencing aberrant differentiation. Circulating KS-like spindle cells have been isolated and cultured from patients with AIDS-KS and from those thought for other reasons to be at risk of AIDS-KS (7). These circulating cells have an adherent phenotype and express markers of both macrophage and endothelial cells (8). No cell lines have yet been established from such circulating spindle cells. Whether KS is a neoplastic lesion or a reactive process remains controversial. The exact cell of origin is controversial and especially in early lesions, the “tumor cell” compartment makes up the minority of the tumour bulk where the majority of cells are inflammatory cells. Furthermore, the clinical presentation of multiple skin lesions in a defined distribution and spontaneous remission of lesions also favor a reactive hyperplasia rather than a true malignancy. Rabkin and colleagues showed that individual KS lesions are probably clonal (9) and more recently reported that multiple lesions in the same patient were clonal (10), suggesting that KS is a disseminated monoclonal cancer and

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that the changes that permit the clonal outgrowth of spindle cells occur before the disease spreads. These studies need confirmation. Early KS is probably a non-clonal proliferation of endothelial cells or their precursors (eg angioblasts) (11) with a prominent inflammatory and angiogenic response. Advanced disease probably represents a true clonal malignancy with metastases of clonally derived spindle cells to different sites. This hypothesis is comparable to the scenario in EBV-driven polyclonal lymphoproliferations in immunodeficient individuals which can progress to clonal lymphomas.

3. CYTOKINES KS spindle cells in vitro and in vivo express high levels of certain cytokines including IL-6, bFGF, TNFa, Oncostatin M and g-interferon (12–17). In particular, IL-6, bFGF and g-interferon are angiogenic in vitro and in some in vivo assays. IL-6 is produced by KS spindle cells and exogenous IL-6 can also enhance the proliferation of KS cells in culture (18). Because of the nature of early KS lesions it has been suggested that such lesions are “cytokine-driven”. All these studies were done on short-term cultures established from KS lesions. Most KS cells grown in culture are highly dependent for proliferation on combinations of these cytokines. The more aggressive nature of HIV-associated KS has led to speculation that HIV encoded proteins may enhance KS growth (17). The HIV-1 Tat protein transactivates HIV viral and also some host cell genes (19). Tat can be released by infected cells and act extracellularly (20). Tat can induce a functional program in endothelial cells related to angiogenesis and inflammation including the migration, proliferation and expression of plasminogen activator inhibitor-1 and E-selectin (21) Tat induces growth of KS spindle cells in vitro and is angiogenic in vivo and in transgenic mice (17, 20, 22). AIDS-associated KS is frequently more aggressive than non-HIV related KS and it is possible that the angiogenic properties of Tat contribute to this phemomenon.

4.

AN INFECTIOUS CAUSE?

Studies of AIDS case surveillance data support the existence of a sexually transmissible KS cofactor: KS occurs predominantly in gay and bisexual men with AIDS, less commonly in those acquiring HIV through heterosexual contact and rarely in AIDS patients with hemophilia or in intravenous drug users (23).

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5.

Boshoff

NEW HERPESVIRUS: KSHV OR HHV-8

Yuan Chang and colleagues employed representational difference analysis (RDA) to identify sequences of a new herpesvirus (Kaposi’s sarcoma-associated herpesvirus or human herpesvirus-8) in AIDS-KS biopsies (24). This new virus is a gamma herpesvirus (25) (genus Rhadinovirus) with sequence similarity to the oncogenic viruses herpesvirus saimiri (HVS) and Epstein-Barr virus (EBV). KSHV is present in all epidemiologic types of KS (26) and also in a rare lymphoma called primary effusion lymphoma (PEL) (27). In situ, most of the spindle cells and endothelial cells in KS lesions contain the virus, further supporting a role for KSHV in KS pathogenesis (28, 29). This role may be direct whereby KSHV “transforms” endothelial cells or indirect where viral encoded proteins stimulate the growth of spindle cells through paracrine and autocrine mechanisms. The short term spindle cell cultures established from KS biopsies lose the viral sequences after 4–6 passages in culture. We do not know yet whether this loss is because the cells enter a lytic phase (productive viral infection) in culture or whether the culture conditions are not appropriate to maintain latent viral infection. The only KSHV positive cell lines available are B cell lines established from PEL (30–32). The paucity of continuous KS cell lines provides support for the hypothesis that the majority of KS lesions, especially early tumors, represent multicentric hyperplastic lesions, rather than cancers. KS Y-1 and SLK are the only two continuous lines available for research (see Table 1). KS Y-1 is used most frequently, although it is not confirmed that this cell line is derived from KS (33). The cell line was established from a pleural effusion of a patient with KS of the skin, and it is not known whether the patient actually had lung parenchyma or pleural involvement with KS. The KS Y-1 cell line originated from mononuclear cells isolated from the pleural effusion after removal oflymphocytes, monocytes/macrophages, and fibroblasts. KS Y-1 cells express markers characteristic for smooth muscle cells and endothelium including CD31, CD34 and smooth muscle actin. To confirm that the KS Y-1 cell line was derived from the specified patient with skin KS, HLA typing on a skin biopsy and KS Y-1 cells was performed (33). SLK was derived from a KS biopsy of an HIV negative patient who was on cyclosporin post-renal transplantation. The cells have an endothelial morphology and express the endothelial marker Factor VIII. Both cell lines are available directly from the laboratories that established them. Both lines are negative for KSHV sequences as well as for HIV and the other human herpesviruses including cytomegalovirus and Epstein-Barr virus. Both lines are adherent and grow in RPMI 1640 with 10% FCS. They also express markers characteristic of endothelial cells and are epithelioid or spindle shaped when grown in vitro. Tumors established from these lines after

Kaposi's Sarcoma

Table 1

Characteristics of KS cell lines

Cell line Patient age/sex KS Y-1 SLK

?/M, AIDS-KS 28/M, Post-transplant KS

Primary site

Specimen site

Skin Pleural effusion Skin, oral mucosa Oral mucosa lesion

Culture method

Availability

Primary reference

Explant Explant

Directly from authors Directly from authors

Lunardi-Iskandar et al. 1995a Herndier et al. 1994

161

162

Boshoff

inoculation into immunodeficient mice show prominent angiogenesis, which is reminiscent of KS. However, one of the main characteristics of KS, the presence of KSHV DNA in most spindle cells (28, 29), is absent in both cell lines and therefore also in the tumors induced in mice. This feature distinguishes KS-like lesions from true KS and casts doubt over these lines as being representative of KS lesions. Human chorionic-gonadotropin protein (PHCG) blocks the growth of KS Y-1 cells in vitro and prevents the induction of KS-like lesions by these cells in immunodeficient mice (34). Because KS occurs more frequently in males than females and was noted to regress occasionally during pregnancy, it was hypothesised that bHCG might be responsible for inhibiting the growth of KS cells in vivo (34). This cell line is now frequently used to study the antimitogenic effects of bHCG on cellular proliferation (35). Most KS lesions are diploid. However, KS Y-1 is tetraploid and has numerous chromosomal abnormalities and SLK is diploid with a few chromosomal changes. The karyotypic abnormalities found in KS Y-1 and SLK have not been described in KS lesions. This further indicates that these lines are not typical of the cells in KS tumors, but could represent the occasional outgrowth of clonal cells from a heterogeneous lesion. Apart from these two immortalized cell lines, an array of KS lines that are dependent on growth factors have been described (Table 3). The characteristics of these cells are diverse, some being of fibroblastic origin and others belonging to the endothelial lineage. These cell cultures have been established using a variety of techniques, including the addition of specific or undefined growth factors, the combination of which might be expected to select for or against the various cell types present in the original lesion. It is unclear whether any of these cell lines represent “KS tumor cells”, but they have been widely studied to try to elucidate the pathogenesis of KS. It is difficult to assess the significance of the conflicting data resulting from these studies, especially as the cell lines used are so diverse. The earliest reported KS cell lines had a fibroblastoid morphology and expressed mesenchymal, but not endothelial cell markers (39). Albini et al. reported a KS cell line of fibroblastoid appearance with many characteristics of smooth muscle cells (40,41). Cell lines with a spindle-like morphology were established from pleural effusions from patients with pulmonary KS (13, 42). These cells expressed several endothelial markers, as did cell lines established by an independent group, also from pleural effusions (43). Cell lines with characteristics of endothelial cells have also been established from skin biopsies (44, 45) and peripheral blood cells of KS patients (7). Cell cultures have also been reported which seem to be heterogeneous (44, 48). Nakamura and colleagues showed in 1988 that conditioned medium (CM) from T lymphocytes infected with human retroviruses was mitogenic for

Kaposi’s Sarcoma

163

Table 2 In vitro and in vivo growth of KS cell lines Cell line Tumor pathology KS Y-1

Histopathology of skin lesions show spindle cells and prominent vasculature

SLK

Typical KS lesions described

In vitro characteristics

Xenograft pathology

Polygonal morphology that changes to spindle shaped cells when treated with activated T-cell conditioned medium or when cells become confluent Cells grow as a homogeneous monolayer with an epithelioid morphology. Doubling time is 24–36 hours. No nuclear atypia

Tumors in nude and SCID mice show marked vascularity. Tumor metastases are seen. Tumors are described as KSlike lesions Rapidly growing tumors established in nude mice. Histology shows proliferation of endothelial-like cells surrounding slit-like spaces (“KS-like”). Tumor metastases not seen.

Table 3 KS cell lines dependent on growth factors Morphology

Origin of cell line

Fibroblast

Skin KS AIDS

Fibroblast

Skin KS AIDS Skin KS AIDS

Spind1e

Ribbon Fibroblast

Irregular

Endothelial Fibroblast

Skin KS AIDS Skin KS AIDS

Markers

Tumorigenicity

Reference

Endothelial Smooth muscle Fibroblast Smooth muscle

Non-malignant in nude mice

Delli Bovi et al. (39)

Grows in 80%, depending on the geographic location) fall into the latter category. The Epstein-Barr virus (EBV) appears to be involved in the development and etiology of NPC, tumors often contain the EBV genome, and patients have high titers of antibody to EBV antigens. A number of NPC cell lines have been established. These are summarized in Part 2 of Table 1.

Head and Neck Cancers

5.

191

DO HNSCC CELL LINES RETAIN THE PATHOLOGICAL CHARACTERISTICS OF THE TUMORS OF ORIGIN?

In Table 2, details are given about the tumor from which cell lines were derived and information about the cell line. Comparisons of the histopathology of the original specimen and the ability of the cell line to replicate the histologic features in vitro or in xenograft are given whenever available. Remarkably, those tumors that have been studied in xenografts replicate the original histology so well that the mouse tumor and human tumor are often indistinguishable (Carey, 1985).

6.

DO THE CELL LINES REFLECT THE MOLECULAR GENETICS OF HNSCC?

Table 3 contains partial information about the genetic characteristics of the tumor lines. This is by no means a comprehensive listing and the reader is encouraged to consult the original publications of each cell line developer for more complete data. Information is also given regarding the HPV status of some lines. The presence of human papilloma virus in head and neck tumors is still controversial. In several cases, HPV signals have been detected in the original tumor or in the early passages of the cell lines, but then in later stages HPV cannot be detected. The precise explanation for this is not known, but current wisdom suggests that episomal HPV may not be stable in vitro or may be present in only a minority of cells. That the HPV is lost with time also indicates that it is not essential for the transformed state. There are now a few HNSCC lines that have stable content of HPV DNA. It is emerging that these lines also have wild type p53, but at the time of this writing, this data has not yet been published.

ACKNOWLEDGMENTS Work on this chapter was supported in part by grant 1R01 DE12477 from the National Institute of Dental and Craniofacial Research by Dr. Carey and by a research fellowship from the Deafness Research Foundation to Dr. Christopher Lansford.

Cell line name

Age Gender TNM

Grade Stage Specimen site Type of lesion

Primary location

Prev. tx

larynx

none

NS

larynx

recurrence

Hep 3 (HeLa?) 62 male

NS

lymph node

KB(HeLa?)

64 male

NS

lymph node buccal cavity none metastasis primary buccal cavity none

RPMI2650

?

?

NS

Detroit 562

?

female

FaDu SW579 A-253 T3M-1

56 59 54 33

male male male male

HLaC78

?

male? NS

HSmC78

?

male? NS

HLaC79

?

male?

MC

66 female NS

HN-1 HN-2 HN-3

51 male 49 male 63 male

T2N1M0 T3N0M0 T3N0M0

HN-4 HN-5

57 male 73 male

T2N0M0 T2N0M0

pleural fluid

Authenti- Availability Primary reference cation

Rat xenograft Rat xenograft Explant

Toolan 1953 Moore et al. 1955 Eagle 1955

nasal septum

RT,S

pharynx

none

hypopharynx thyroid salivary gland lower gingiva

none none none none

Cell pellet from fluid Cell pellet from fluid E on RC Explant Explant Nude mouse

larynx

none

Explant

Zenner et al. 1979

submandibular none gland larynx

Explant

Zenner et al. 1979

Explant

Zenner et al.1983

DSMZ

Moore and Sandberg 1964 Peterson et al. 1971 Rangan 1972 Leibovitz 1973 Giard et al. 1973 Okabe et al. 1978

maxillary sinus none

Trypsin digest

III II III

distant metastasis hypopharynx primary thyroid primary salivary gland primary pleural distant effusion metastasis neck metastasis neck metastasis neck metastasis maxillary primary sinus tongue primary larynx recurrence tongue recurrence

tongue larynx tongue

Explant Explant Explant

Nakashima et al. 1980 Easty et al. 1981 Easty et al. 1981 Eastyet al. 1981

II II

larynx tongue

recurrence recurrence

larynx tongue

Explant Explant

Easty et al. 1981 Easty et al. 1981

NS NS NS NS

NS

CX,RT,S CX,S,ND CX,RT, S,ND CX,RT,S CX,RT,S

Continued on next page

Lansford et al.

Hep 2 (HeLa?) 57 male

Previous tx Culture method details

192

Table 1. Head and neck SCC cell lines: Donor information, specimen site, culture details and availability

Cellline name HN-6 HN-7 HN-8 HN-9 HN-10 UM-SCC-1 UM-SCC-2

Age Gender TNM 54 56 56 67 57 73 63

male T2N0M0 male T2N0M0 male T2N0M0 female T2N0M0 male T2N0M0 male T2N0M0 female T2N0M0

Grade Stage Specimen site Type of lesion II tongue recurrence II tongue recurrence II tongue recurrence II tongue recurrence II larynx recurrence MD II floorofmouth recurrence WD II alveolarridge recurrence lymphnode

Primary Prev. Previous tx Culture Authenti- Availability Primary location reference tx details method cation tongue Eastyetal. 1981 CX,RT,S Explant tongue CX,RT,S Explant Eastyetal. 1981 Eastyetal. 1981 Explant RT,S tongue Eastyetal. 1981 Explant RT,S tongue larynx Eastyetal. 1981 RT,S Explant Explant floorofmouth S,RT UM-SCC-AR Krauseet al. 1981 See foot- Nudemouse UM-SCC-AR Krauseetal.1981 alveolarridge S note UM-02 nasal S partial Explant UM-SCC-AR Krauseetal.1981 columella rhinectomy CX See foot- Explant tonsillar UM-SCC-AR Krauseetal.1981 pillar noteUM-04 Explant D S supraglottis UM-SCC-AR Krauseetal.1981 BOT Explant none UM-SCC-AR Krauseetal.1981 alveolus none Explant UM-SCC-AR Krauseetal.1981 alveolus Explant RT UM-SCC-AR Krauseetal.1981 ant.tongue Explant RT UM-SCC-AR Krauseetal.1981

73 female TlNOMO MWD I

UM-SCC-AR Krause et al. 1981 UM-SCC-AR Careyetal. 1983 UM-SCC-AR Careyetal. 1983 UM-SCC-AR Careyetal.1983 UM-SCC-AR Careyetal. 1983 UM-SCC-AR Careyetal.1983 UM-SCC-AR Careyetal.1983 UM-SCC-AR Carey et al. 1983

193

lymph node metastasis UM-SCC-4 47 female T3N2aM0 PD IV BOT persistent primary UM-SCC-5 59 male T2NlM0 PD III supraglottis primary UM-SCC-6 37 male T2N0M0 M-PD II BOT primary UM-SCC-7 64 male T2N1M0 MD III alveolus primary UM-SCC-8 76 female T2N1M0 M-WD III alveolus recurrence UM-SCC-9 71 female T2N0M0 M-WD II persistent ant.tongue primary UM-SCC-10A 57 male T3N0M0 M-WD III truevocalcord primary truevocal cord none Explant D UM-SCC-10B 58 male T3N1M0 M-WD III lymphnode lymph node larynx S total Explant D metastasis laryngectomy epiglottis Explant none IV epiglottis primary UM-SCC-11A 65 male T2N2aM0 UM-SCC-11B 65 male T2N2aM0 Explant IV supraglottic persistant supraglottic CX larynx tumor larynx UM-SCC-12 71 male T2N1M0 MWD III larynx Explant S recurrence larynx UM-SCC-13 60 male T3N0M0 WD III esophagus recurrence larynx RT,S Seefoot- Explant note UM-13 floor of mouth recurrence floor of mouth S UM-SCC-14A 58 female TlNOMO P-MWDI Explant D UM-SCC-14B 59 female TlNOMO PD I floor of mouth recurrence floor ofmouth S,S,RT, Explant D UM-SCC-3

Head and Neck Cancer

Table 1. (continued)

Continued on next page

(continued)

Cell line name

Age Gender TNM

UM-SCC-14C 58 female TlNOMO

Grade Stage Specimen site Type of lesion PD

I

UM-SCC-15 70 male T4N1M0 WD IV UM-SCC-16 61 female T2N0M0 MD II UM-SCC-17A 47 female TlNOMO MWD I UM-SCC-17as 47 female TlNOMO

MWD

UM-SCC-17B 47 female TlNOMO

MWD I

UM-SCC-18 UM-SCC-19 UM-SCC-20

68 male 67 male 67 male

UM-SCC-21A 65 UM-SCC-21B 65

DN1M0 T2N1M0 T2N1M0

PD III M-PD III PD III

male male

T2N1M0 T2N1M0

PD

III III

female female female male male

T2N1M0 T2N1M0 T2N0M0 TlNOMO T3N0M0

MD MD MWD WD PD

III III II I III

MWD III

58 58 36 57 50

UM-SCC-26

50 male

T3N1M0

UM-SCC-27

62 male

TlNOMO

UM-SCC-28

61 female TlNOMO

I WD

I

Prev. tx

Previous tx Culture Authenti- Availability method cation details

floor of mouth S,S,RT, See foot- Explant CX note UM-14C hypopharynx none Explant hypopharynx primary larynx Explant none larynx primary supraglottis RT See foot- Explant supraglottis primary note UM-17A supraglottis RT See foot- Explant supraglottis primary note UM-17A RT See foot- Explant local cartilage supraglottis soft tissuenote UM-17B neck invasion S,RT Explant BOT recurrence BOT Explant BOT primary BOT none RT,S See foot- Explant necknode metastasis larynx note UM-20 Explant S,RT ethmoid sinus local invasion skin of nose Explant S,RT lymph node lymph node skin metastasis Explant hypopharynx none hypopharynx primary Explant neck metastasis metastasis hypopharynx none Explant larynx none larynx primary larynx Explant recurrence true vocal cord RT,S,S RT,S,S Explant neck metastasis larynx floor of mouth recurrence

none lymph node BOT metastasis S,RT neck lymph node ant. tongue metastasis true vocal cord none true vocal cord primary

neck

Explant See foot- Explant note UM-27 Explant

Primary reference

D

UM-SCC-AR Carey et al. 1983

D

not available Carey et al. 1983 UM-SCC-AR Carey et al. 1983 UM-SCC-AR Carey et al. 1983

D

UM-SCC-AR Carey et al. 1983

D

UM-SCC-AR Carey et al. 1983 UM-SCC-AR Carey et al. 1983 UM-SCC-AR Carey et al. 1983 UM-SCC-AR Carey et al. 1983 UM-SCC-AR Carey et al. 1983 UM-SCC-AR Kelker et al. 1996 UM-SCC-AR UM-SCC-AR UM-SCC-AR UM-SCC-AR UM-SCC-AR

Carey et al. 1983 Carey et al. 1983 Carey et al. 1983

Buchhagen et al. 1996 UM-SCC-AR Buchhagen et al. 1996 UM-SCC-AR

UM-SCC-AR Buchhagen et al. 1996 Continued on next page

Lansford et al.

UM-SCC-22A UM-SCC-22B UM-SCC-23 UM-SCC-24 UM-SCC-25

Primary location

194

Table 1.

(continued)

Cell line name

Age Gender TNM

UM-SCC-29

66 male

UM-SCC-30

53

UM-SCC-31

56 male

T3N0M0

UM-SCC-32

58

male

T3N1M0

UM-SCC-33

47

female T4N3aM0 WD

Grade Stage Specimen site Type of lesion

T3N2aM0 WD

female T3N1M0

MD PD WD

IV

alveolus

persistent primary III pyriform sinus persistent primary III tonsil persistent primary III retromolar primary trigone IV neck metastasis

Primary location

Prev. tx

Previous tx Culture Authenti- Availability Primary reference method cation details

alveolus

CX

See foot- Explant note UM-29 See foot- Explant note UM-30 Explant

pyriform sinus CX tonsil

RT

retromolar none trigone maxillary sinus CX

UM-SCC-AR Buchhagen et al. 1996 UM-SCC-AR Buchhagen et al. 1996 UM-SCC-AR

Explant

UM-SCC-AR

See foot- Explant note UM-33 Explant Explant Explant

UM-SCC-AR

UM-SCC-34 49 male T3N1M0 MD tonsillar pillar none III tonsillar pillar primary UM-SCC-35 51 male T4N1M0 MWD IV tonsillar fossa primary tonsillar fossa none false vocal cord none false vocal cord primary UM-SCC-36 46 male T2N0M0 MWD II UM-SCC-37 48 male TZNOMO MWD vallecula persistent vallecula CX,RT See foot- Explant UM-SCC-AR primarynote UM-37 tonsillar pillar none Explant UM-SCC-38 60 male T2N2aM0 MD IV tonsillar pillar primary UM-SCC-39 42 male T3N3aM0 MD IV pyriform sinus primary pyriform sinus none Explant esophagus RT,CX See foot- Explant III esophagus persistent UM-SCC-40 64 male T3N0M0 PD note UM-40 arytenoid Explant none III arytenoid UM-SCC-41 78 male T2N1M0 ? primary UM-SCC-42 56 male T4N3bM0 MD IV neck pyriform sinus S Explant persistent UM-SCC-43 ? male palate Explant primary palate retromolar Explant IV neck UM-SCC-44 50 male T4N2bM0 trigone UM-SCC-45 46 female T3N2bM0 Explant IV neck metastasis floor of mouth ? RT,S larynx See foot- Explant recurrence larynx UM-SCC-46 58 female NS note UM-46 UM-SCC-47 53 male T3N1M0 MWD III lateral tongue lateral tongue Explant

Head and Neck Cancer

Table 1.

UM-SCC-AR UM-SCC-AR Grenman et al. 1991 UM-SCC-AR II UM-SCC-AR Grenman et al. 1991 UM-SCC-AR UM-SCC-AR UM-SCC-AR UM-SCC-AR UM-SCC-AR UM-SCC-AR UM-SCC-AR UM-SCC-AR UM-SCC-AR

195

Continued on next page

Grade Stage Specimen site Typeof lesion

UM-SCC-48

51 male

T4N0M0 WD

UM-SCC-49

63 male

T2N1M0 MWD III

lateraltongue primary

59 female T4N3bM0 WD IV 49 male T3N2bM0 WD IV ketatining UM-SCC-52 48 female T3N3cM0 IV UM-SCC-53 49 male T3N1M0 MWD III III UM-SCC-54 83 male T3N0M0 II UM-SCC-55 65 male

BOT primary floorofmouth

IV neck

UM-SCC-50 UM-SCC-51

UM-SCC-57 ? male UM-SCC-58 ? female UM-SCC-59 71 female T3N2bM0 UM-SCC-60 ? ? UM-SCC-62 47 male T3N1M0 ? UM-SCC-63 82 male NS UM-SCC-65 ? male

male male male male

retromolar trigone lateraltongue BOT

none

supraglottis pyriformsinus truevocalcord recurrence retromolar RT trigone

primary

IV lateraltongue primary hypopharynx III tonsil larynx larynx larynx neck

T4N0M0 MWD IV

lateraltongue hypopharynx tonsillarfossa none Skin

hardpalate

primary lymphnode metastasis primary

larynx larynx larynx hardpalate

larynx

Previous tx Culture Authenti- Availability Primary method cation details reference Explant

UM-SCC-AR

Explant

UM-SCC-ARBuchhagenetal. 1996 UM-SCC-AR UM-SCC-ARBuchhagenetal. 1996

Explant Explant Explant Explant Explant Explant

UM-SCC-AR UM-SCC-AR UM-SCC-AR UM-SCC-AR

Explant Explant Explant Explant Explant Explant Explant

UM-SCC-AR UM-SCC-AR UM-SCC-AR UM-SCC-AR UM-SCC-AR UM-SCC-AR Somers et al. 1992 UM-SCC-AR Buchhagen et al. 1996 UM-SCC-AR UM-SCC-AR UM-SCC-AR UM-SCC-AR

Explant Explant Explant Explant CX

Explant Explant Explant Explant

UM-SCC-AR Grenman et al. 1991 UM-SCC-AR UM-SCC-AR UM-SCC-AR Continued on next page

Lansford et al.

35 ? ? ?

tonsil

Prev. tx

larynx

UM-SCC-66 ? male UM-SCC-67 ? male UM-SCC-68A ? male UM-SCC-68B male UM-SCC-69 UM-SCC-70 UM-SCC-71 UM-SCC-72

supraglottis tonsil

metastasis

Primary location

196

Table 1. (continued) Cell line Age Gender TNM name

UM-SCC-74B 50 UM-SCC-75 UM-SCC-76 UM-SCC-77 UM-SCC-78A

male

Grade Stage Specimen site Type of lesion tongue primary recurrence neck recurrence PD III BOT

T3N0M0

III

? female ? male 58 female ? male

Primary location tongue BOT

intraoral

recurrence

larynx

neck

metastasis

larynx

medial pyriform sinus tonsil

Prev. tx none

Previous tx Culture Authenti- Availability Primary reference details method cation UM-SCC-AR Buchhagen et al. 1996 Explant UM-SCC-AR Explant CX,RT See foot- Explant UM-SCC-AR S note 74A UM-SCC-AR CX,RT See foot- Explant S,S,CX note 74B Explant UM-SCC-AR Explant UM-SCC-AR Explant UM-SCC-AR Explant UM-SCC-AR

UM-SCC-78B ? UM-SCC-79 ?

male male

UM-SCC-80 67 UM-SCC-81A 53

male male

T4N1M0 T2N0M0

WD IV P-MWD II

hypopharynx primary Lfalsecord primary

base of tongue & floor of mouth hypopharynx larynx none

UM-SCC-81B 53 male

T2N0M0

MWD II

tonsillar pillar primary

tonsil

MD

II

lateral tongue primary

lateral tongue none

?

II

BOT

lateral tongue RT

UM-SCC-82A 53

female T2N0M0

UM-SCC-82B 53 female T2N0M0

recurrence

S,S

Explant Explant Explant immuno- Explant D suppression x 20 mo for heart transplant See foot- Explant D note 81B Explant

UM-SCC-AR UM-SCC-AR UM-SCC-AR Kelker et al. 1996 UM-SCC-AR

UM-SCC-AR Frank et al. 1997 UM-SCC-AR Buchhagen et al. 1996 UM-SCC-AR Buchhagen et al. 1996

197

External Explant beam radiation and radiation implants 7 months earlier

Head and Neck Cancer

Table 1. (continued) Cell line Age Gender TNM name UM-SCC-73A ? male UM-SCC-73B UM-SCC-74A 50 male T3N0M0

Continued on next page

Cell line name

Age Gender TNM

UM-SCC-83A UM-SCC-83B UM-SCC-84 UM-SCC-85 UM-SCC-86

79 male 79 male 35 male 58 male -45female

T2N0M0

UM-SCC-87 UM-SCC-88 UM-SCC-89 UM-SCC-90 UM-SCC-91 UM-SCC-92 UM-SCC-93

69 76 53 48 65 ? 64

male female male male male female female

T3N0M0 T3N1M1 T3N0M0 T4N3M0 T4N0M0 T2N0M0 T4N0M0

buccal mucosa buccal mucosa III tongue cribiform plate lateral mid tongue III oropharynx IV hypopharynx III R BOT IV epiglottis IV LBOT II lateral tongue IV larynx or neck

UM-SCC-94 UM-SCC-95 UM-SCC-96 UM-SCC-97 UM-SCC-98 UM-SCC-99 UM-SCC-100

73 62 75 38 75 57 35

male male female female male male female

T4N2aM0 T4N1M0 T3N3M0 TlN0M0 T4N0M0 T3N0M0 T4N3M0

IV IV IV I IV III IV

UM-SCC-101A 65 female T2N3M0 UM-SCC-101B 65 female T2N3M0 55 male T3N0M0 SCC-4

MWD IV MWD IV III

Grade Stage Specimen site Type of lesion

Prev. tx

Previous details

lateral tongue None primary residualtumor nasal vestibule S,S,S

primary primary primary primary primary primary recurrence or met larynx primary pyriform sinus primary epiglottis primary lateral tongue primary larynx primary tonsil primary tonsil persistant primary tonsil neck tongue

Primary location

primary metastasis primary

oropharynx hypopharynx RBOT epiglottis LBOT lateral tongue larynx

None None None None None None S,S,S,Cx

larynx None pyriform sinus None epiglottis None anterior tongue None larynx None tonsil None uvula and Clinical tonsil CR at primary PR in neck tonsil None tonsil None tongue RT,Cx little response to Rx; Cx was Mtx

tx Culture Authenti- Availability Primary reference method cation Explant D Explant D Explant Explant Explant D

not available Frank et al. 1997 UM-SCC-AR UM-SCC-AR UM-SCC-AR UM-SCC-AR Frank et al. 1997

Explant Explant Explant Explant Explant Explant Explant

UM-SCC-AR Frank et al. UM-SCC-AR UM-SCC-AR Frank et al. UM-SCC-AR Frank et al. UM-SCC-AR Frank et al. UM-SCC-AR UM-SCC-AR Frank et al.

D D D D D

1997 1997 1997 1997 1997

Explant D Explant Explant Explant Explant Explant Explant

UM-SCC-AR Frank et al. 1997 UM-SCC-AR UM-SCC-AR UM-SCC-AR UM-SCC-AR UM-SCC-AR UM-SCC-AR

Explant D Explant D T-C-D or E on FFL

UM-SCC-AR UM-SCC-AR Rheinwald and Beckett 1981

Lansford et al.

(continued)

198

Table 1.

Continued on next page

(continued)

Cell line name

Age Gender TNM

SCC-9

25 male

SCC-12B.2

Grade Stage Specimen site Type of lesion

Primary location

Prev. tx

oral tongue

primary

oral tongue

none

60 male

facial skin

primary

facial skin

none

SCC-12F.2a

60 male

facial skin

primary

facial skin

none

SCC-12V

60 male

facial skin

primary

facial skin

none

SCC-13

56 female NS

facial skin

primary

facial skin

RT

SCC-15

55 male

T4N1M0

IV

tongue

primary

tongue

none

SCC-25

70

TlN1M0

III

oral tongue

primary

oral tongue

RT

SCC-35

??

T4N0

IV

pyriform sinus recurrence

SCC-49

??

T2N0

II

recurrence

SCC-61

??

T4N2bx

male

SCC-66

III

oral tongue

floor of mouth primary

T4xN0 60 male ??

T4N0M0 T4N1

primary

WD

IV

IV

tongue soft palate

primary primary

pyriform sinus RT

tonsil

oral tongue

RT

?

T-C-D or E on FFL T-C-D or E on FFL T-C-D or E on FFL T-C-D or E on FFL RT gave a T-C-D or CR with E on FFL recurrence at 5 mo T-C-D or E on FFL rapid tumor T-C-D or growth E on FFL during RT RT gave a E on irr CR with 3T3 FFL recurrence at 24 mo RTgave a E on irr PR with 3T3 FFL recurrence at 14 mo. E on irr 3T3 FFL

floor of mouth tongue soft palate

none none

Explant E on irr 3T3 FFL

Primary reference Rheinwald and Beckett 1981 Rheinwald and Beckett 1981 Rheinwald and Beckett 1981 Rheinwald and Beckett 1981 Rheinwald and Beckett 1981 Rheinwald and Beckett 1981 Rheinwald and Beckett 1981 Weichselbaum et al. 1986 Weichselbaum et al. 1986 Weichselbaum et al. 1986 Weichselbaum et al. 1990 Weichselbaum et al. 1986

Continued on next page

199

SCC-68 SCC-71

T2N1

Previous tx Culture Authenti- Availability method cation details

Head and Neck Cancers

Table 1.

SCC-73

??

200

Table1. (continued) Cell line Age Gender TNM name

Grade Stage Specimen site Type of lesion IV

T4N0

SCC-74 SCC-76

51 female T4N0M0 ?? T4N0

PD

SCC-182

71 male

T3N0M0

MD

SCC-200 SCC-203 SCC-210 SCC-213

74 43 60 71

T2N2M0 WD IV T2N2M0 MWD IV IV T3N0M0 PD T4N0M0 PD IV

SCC-220 JSQ-3

66 male

JSQ-3

male male male male

T4N1M0 T3N0

IV IV III

MWD IV III III

T3N0

RMT

primary

mandible maxillary antrum retromolar trigone BOT alvolar ridge tongue retromolar trigone tongue

primary persistent

T3N1

III

SQ-20B

??

T2N0

II

larynx

SQ-29

??

T3N1

III

RMT

Previous tx Culture Authenti- Availability Primary reference details method cation

RMT

?

E on irr 3T3 FFL Explant tumor grew E on irr duringRT 3T3FFL Explant

pyriform sinus recurrence

recurrence

persistent

none CX,S, RT none none S,RT,CX S,RT S,RT

Explant Explant Explant Explant

none

Explant

buccal cavity pyriform sinus RT

larynx

RMT

RT

CX,S

RT gave a E on irr CRwith 3T3 FFL recurrence at 7 mo. RTgavea Eonirr CRwith 3T3 FFL recurrence at 4 mo. Cx gave a E on irr PR 3T3 FFL

Weichselbaum et al. 1986 Weichselbaum et al. 1986

Weichselbaum et al. 1990 Weichselbaum et al. 1990 Dunphy et al. 1992 Weichselbaum et al. 1986 Weichselbaum et al. 1986 Weichselbaum et al. 1986

Lans ford et al.

??

Prev. tx

mandible maxillary antrum retromolar primary trigone primary BOT recurrence alveolarridge primary tongue recurrence retromolar trigone primary tongue

buccal cavity primary

JSQ-13 SQ-9G

Primary location

Continued on next page

Table 1. (continued) Age Gender TNM

SQ-31

??

T2N0

SQ-38

??

T3N0

SQ-39

??

T3N2a

SQ-43

??

T4N2

SQ-50 HN-SCC-3

??

T4N2 T3N3bM0

Grade Stage Specimensite Typeof lesion

Primary location

Prev. tx

Previoustx Culture Authenti-Availability details method cation

pyriformsinus CX,RT CXgave a E on irr CR,RT 3T3FFL given for consolidation but Ca recurred at 7 mo. ? E on irr III RMT primary RMT 3T3FFL CX,S Cxgavea Eonirr IV RMT persistent RMT PR 3T3FFL recurrence supraglottis RT RTgave a E on irr IV supraglottis CR, 3T3FFL stomalrecurrence at 7 mo. IV supraglottis recurrence supraglottis RT E on irr 3T3FFL primary softpalate IV softpalate II

pyriformsinus recurrence

HN-SCC-28

larynx

T4N1M0

IV BOT

HN-SCC-68 HN-SCC-80 HN-SCC-104

T3N3aM0

IV pyriformsinus primary

HN-SCC-109A HN-SCC-131

T2NxM0

ant.tongue

primary

primary

BOT

pyriformsinus larynx ant.tongue

Explant

Weichselbaum et al. 1986

Weichselbaum et al. 1986 Weichselbaum et al. 1986 Weichselbaum et al. 1986 Weichselbaum et al. 1986 Weichselbaumetal. 1990 Weichselbaum et al. 1989 Dunphy et al. 1992 Dunphy et al.1992 Weichselbaum et al. 1990 Dunphy et al.1992 Dunphy et al.1992 Weichselbaum et al. 1990 Dunphyet al.1992 Weichselbaum et al. 1990 Continued on next page

201

HN-SCC-29 HN-SCC-42 HN-SCC-58

Primary reference

Head and Neck Cancers

Cell line name

Grade Stage Specimensite Typeof lesion

TlN1M0

HN-SCC-135

III hardpalate

primary

Primary location

T4N3bM0

IV

oropharynx

primary

oropharynx

HN-SCC-151

T3N0M0

III

ant. tongue

primary

ant. tongue

HN-SCC-152 HN-SCC-153

T3N0M0

III

larynx

primary

larynx

HN-SCC-161

T4N1M0

IV

BOT

primary

BOT

HN-SCC-166

T4N0M0

IV

HN-SCC-167 HN-SCC-170A

T3N0M0 TZN0M0

III II

soft and hard primary palate

soft and hard palate

subglottic

subglottic

HN-SCC-170B HN-SCC-294 HN-SCC-296A

TZNOMO T2N0M0

II II

MDA-1386

58 57 38 67 81 54 64

female male male female female male male

NS NS NS NS NS T3N0M0 WD III T3N3aM0 P-MWDIV

72 male T4N3bM0 PD

tongue larynx laIynx buccal mucosa oral mucosa tonsil lymphnode

subglottic RT? oral tongue pyriform sinus

recurrence tongue S,RT recurrence larynx RT,S recurrence larynx RT,S recurrence buccal mucosa RT,S primary oral mucosa ? tonsil primary lymphnode larynx ? metastasis IV lymphnode lymphnode hypopharynx metastasis

Explant Explant Explant Explant Explant Explant Explant

Weichselbaumetal. 1990 Weichselbaum et al. 1990 Weichselbaum et al. 1990 Dunphy et al. 1992 Weichselbaum et al. 1990 Weichselbaum et al. 1990 Weichselbaum et al. 1990 Cowan et al. 1992 Weichselbaum et al. 1990 Dunphy et al. 1992 Cowan et al. 1992 Weichselbaum et al. 1992 Rupniak et al. 1985 Rupniaketal. 1985 Rupniak etal. 1985 Rupniak et al. 1985 Yanagawa et al. 1986 Sacks et al. 1988 Sacks et al. 1989 Beckhardt et al. 1995 Continued on next page

Lansford et al.

TR-126 TR-131 TR-138 TR-146 TYS MDA-183 MDA886LN

subglottic primary oral tongue primary pyriform sinus primary

Previoustx Culture Authenti- Availability Primary method cation reference details

hardpalate

HN-SCC-143

primary

Prev. tx

202

Table 1. (continued) Cellline Age Gender TNM name

Table 1.

(continued)

MDA-1483 MDA-1586 MDA-1986

Age Gender TNM 66 male

T2N1M0

Grade Stage Specimen site Type of lesion WD

III

WD

MDA-686LN HC-2,3,4,7,9 64 female T3N0M0

Primary location

Prev. tx

primary

RMT ? larynx lymph node lymph node tongue metastasis BOT maxillarysinus recurrence maxillary sinus RT,S RMT

Previous tx Culture Authenti- Availability Primary reference method cation details Explant

Sacks et al. 1988

Komiyamaet al. 1989 Heo et al. 1989

PCI-1

65 male

T2N0M0

MWD II

larynx

PCI-2

51 male

T3N0M0

MWD III

floor of mouth primary

floor of mouth none

PCI-3

50 male

T3N0M0

MWD III

51 male

T3N0M0

MWD III

retromolar trigone larynx

none

PC1-4A

retromolar trigone larynx

Nude mouse Explant DNA finger printing Explant DNA finger printing Explant

none

Explant

PCI-4B

51 male

T3N0M0

MWD III

lymphnode

larynx

none

Explant

PCI-5 PCI-6A PCI-6B

63 male 81 male 81 male

hypopharynx none tonsil none tonsil S,RT

Explant Explant Explant

Contact Heo et al. 1989 TLW Contact Heo et al. 1989 TLW Contact Heo et al. 1989 TLW Contact TLW Heo et al. 1989 Contact TLW Heo et al. 1989 Contact TLW Heo et al. 1989

PCI-7 PCI-8

45 male 54 male

BOT none pyriformsinus none

Explant Explant

Contact TLW Heo et al. 1989 Contact TLW Heo et al. 1989

PCI-9A PCI-9B

56 male 56 male

BOT BOT

Explant Explant

Contact TLW Heo et al. 1989 Contact TLW Heo et al. 1989

III

recurrence

primary primary

S

none none

Contact TLW Contact TLW

Heo et al. 1989

Continued on next page

203

lymphnode metastasis T4N1M0 MD III hypopharynx primary T3N3N0 MD II tonsil primary T3N3M0 MD IV lymphnode recurrent lymph node metastasis primary T4N2M0 MD IV BOT lymphnode T3N2M0 MWD IV lymphnode metastasis primary T4N3M0 MD IV BOT T4N3M0 MD IV lymphnode lymphnode metastasis

larynx

Head and Neck Cancers

Cell line name

(continued) Grade Stage Specimen site Type of lesion

PCI-10 PCI-11 PCI-12

61 male 83 male 65 male

T2N1M0 T4N0M0 T4N0M0

MWD III PD IV MD IV

PCI-13 PCI-14

50 male 37 male

T4N1M0 DNOMO

PD WD

III

PCI-15

69 male

T2N1M0

PD

III

PCI-15A PCI-16

69 male 61 male

T2N1M0 T2N1M0

III PD P-MWD III

PCI-17

61

PCI-18 PCI-19 PCI-20

46 male 56 male 66 male

T4N0M0 T3N0M0 TxN3M0

MWD IV MWD III PD

PCI-21 PCI-22A PCI-22B

63 male 59 male 59 male

T3N2M0 T4N1M0 T4N1M0

WD MD MD

PCI-23

65

PCI-24 PCI-25

81 male 65 male

female T2N0M0

female T2N0M0 T2N0M0 T4N1M0

PD

II

IV IV IV

MWD II WD II MWD IV

BOT primary pyriformsinus primary lymphnode recurrent lymph node metastasis RMT primary lymph node recurrent lymph node metastasis neck lymph node metastasis pyriformsinus primary lymph node lymph node metastasis primary Epiglottis (larynx) recurrence larynx primary glottis skin lymph node metastasis pyriformsinus primary buccal mucosa primary neck lymph node metastasis floorofmouth primary tongue neck

Primary location

Prev. tx

Previous tx Culture Authenti- Availability method cation details

Primary reference

BOT none pyriformsinus none pyriformsinus RT,S

Explant Explant Explant

Contact TLW Heo et al. 1989 Contact TLW Heo et al. 1989 Contact TLW Heo et al. 1989

RMT larynx

none S

Explant Explant

Contact TLW Heo et al. 1989 Contact TLW Heo et al. 1989

hypopharynx

none

Explant

Contact TLW Heo et al. 1989

pyriform sinus Epiglottis (larynx) Epiglottis (larynx) larynx glottis skin

none none

Explant Explant

Contact TLW Heo et al. 1989 Contact TLW Heo et al. 1989

S,RT

Explant

Contact TLW Heo et al. 1989

RT none none

Explant Explant Explant

Contact TLW Heo et al. 1989 Contact TLW Contact TLW

pyriformsinus none buccalmucosa none buccal mucosa none

Explant Explant Explant

Contact TLW Contact TLW Sacchi et al. 1991 Contact TLW Sacchi et al. 1991

floorofmouth none

primary tongue lymph node larynx metastasis

none none

Explant Explant Explant

Contact TLW Yasamura et al. 1994 Contact TLW Heo et al. 1990 Contact TLW Sacchi et al. 1991 Continued on next page

Lansford et al

Age Gender TNM

204

Table 1. Cell line name

(continued) Age Gender TNM

Grade Stage Specimen site Type of lesion

PCI-26

64 male

T3N0M0

WD

III

larynx

primary

PCI-27

51

male

T4N0M0

MD

IV

neck

PCI-28

50 male

T3N2M0

MD

IV

PCI-29 PCI-30

70 female T4N0M0 54 male T3N1M0

MWD IV MWD III

epiglottis (larynx) glottis BOT

lymph node floor of mouth metastasis primary epiglottis (larynx) primary glottis primary BOT

PCI-31

48

male

T3N0M0

PD

RMT

primary

PCI-32

61

male

T4N0M0

MWD IV

PCI-33

65

male

TlN0M0

MD

I

PCI-34

67

male

T4N2M0

WD

IV

PCI-35

75

male

T3N1M0

MWD III

PCI-36

65 female TZNOMO

MWD II

PCI-37A

62 male

T3N2M0

MD

IV

PCI-37B

62 male

T3N2M0

MD

IV

PCI-38

56 male

T3N1M0

MWD III

tongue

epiglottis (larynx) recurrent epiglottis lymph node (larynx) metastasis primary intraoral

PCI-39

73 male

TZNOMO

MWD II

epiglottis

primary

III

Previous tx Culture Authenti- Availability method cation details

Primary location

Prev. tx

larynx

none

Explant

none

Explant

none

Explant

RT none

Explant Explant

none

Explant

lymph node pyriform sinus none metastasis none floor of mouth metastasis intraoral

Explant

RMT

neck

retromolar trigone aryepiglottic fold neck epiglottis (larynx) epiglottis (larynx)

Primary reference

Contact TLW Snyderman et al. 1994 Contact TLW Contact TLW Sacchi et al. 1991 Contact TLW Contact TLW Yasamura et al. 1994 Contact TLW Snyderman et al. 1994 Contact TLW Yin et al. 1991

metastasis

intraoral

none

Explant

Contact TLW Snyderman et al. 1994 Contact TLW Yin et al. 1991

primary

aryepiglottic fold tongue

none

Explant

Contact TLW

S

Explant

Contact TLW Snyderman et al. 1994

none

Explant

none

Explant

Contact TLW Snyderman et al, 1994 Contact TLW Snyderman et al. 1994

none

Explant

none

Explant

recurrent lymph node metastasis primary

epiglottis (larynx)

Explant

Contact TLW Yasumura et al. 1994 Contact TLW Snyderman et al. 1994 Continued on next page

205

Cell line name

Head and Neck Cancers

Table 1.

(continued) Age Gender TNM

PCI-40

60

PCI-41

73 female T2N0M0

MD

PCI-42

58

MWD IV

PCI-43 PCI-44 PCI-45

63 male 78 male 47 male

TlN0M0 MWD I T4N0M0 MD IV T4N3M0 WD IV

retromolar trigone glottis glottis neck

PCI-46

46

T2N2M0

neck

PCI-47 PCI-50

57 female T3N0M0 92 male T2N0M0

MWD III WD II

PCI-51 PCI-52

54 43

male male

TlN2M0 TlN2M0

MD IV MWD IV

PCI-100 PCI-101 PCI-102 PCI-103 PCI-104 PCI-105 PCI-106 UT-SCC-1A

72 53 48 68 64 69 70 75

male male male male male male female female

T3N1M0 MD T4N2M0 MD T2N0M0 PD T3N0M0 PD T4N3M0 MD T3N0M0 WD T4N2M0 MD T2N1M0 MD

UT-SCC-1B

75 female T2N1M0

MD

III

UT-SCC-2

60 male

MD

IV

male

male

male

Grade Stage Specimen site Type of lesion

T4N2M0 MD

T4N2M0

T4N1M0

MD

IV

neck

II

BOT

IV

larynx tongue

pyriformsinus aryepiglottic fold III floor of mouth IV tongue II larynx III larynx IV pyriformsinus III hypopharynx IV pyriform sinus III gingiva gingiva

Primary location

Prev. tx

Previous tx Culture Authenti- Availability method cation details

lymph node pyriform sinus none metastasis primary BOT S,RT

Explant

primary

Primary reference

retromolar trigone primary glottis primary glottis lymph node tongue metastasis lymph node BOT metastasis primary larynx primary tongue

RT,S

Explant

Contact TLW Snyderman et al. 1994 Contact TLW Snyderman et al. 1994 Contact TLW

RT,S S none

Explant Explant Explant

Contact TLW Contact TLW Contact TLW

none

Explant

Contact TLW

none none

Explant Explant

primary primary

none none

Explant Explant

primary primary recurrence primary primary primary primary recurrence recurrence

floorofmouth primary

pyriformsinus aryepiglottic fold floor of mouth tongue glottis larynx pyriformsinus hypopharynx pyriform sinus gingiva mandibula

Explant

none none RT,CX none none S,RT RT RT

floorofmouth none

30Gy2 months 30 Gy 4 months

Explant Explant Explant Explant Explant Explant Explant Explant

Contact TLW Contact TLW Yasumura et al. 1993 Contact TLW Sung et al. 1995 Contact TLW Nagashima et al. 1998 Contact TLW Myers et al. 1996 Contact TLW Myers et al. 1996 Contact TLW Contact TLW Contact TLW Myers et al. 1996 Contact TLW Myers et al. 1996 Contact TLW AC Grenman et al. 1991

Explant

AC

Explant

AC

Grenman et al. 1991 Grenman et al. 1991 Continued on next page

Lansford et al.

Cell line name

206

Table 1.

Table 1. (continued) Age Gender TNM

Grade Stage Specimensite Type of lesion

Primary location

Prev. tx

UT-SCC-4

43 female T3N0M0 MD

III neck

UT-SCCJ

58 male

MD

III

tongue

UT-SCC-6A

51 female T2N1M0 WD

III

larynx

UT-SCC-6B

51 female T2N1M0 WD

III

neck

metastasis

supraglottic larynx

RT

UT-SCC-7

67 male

TlNOMO MD

I

neck

metastasis

cutisregio temporalis

RT

UT-SCC-8

42 male

TZN0M0 WD

II

larynx

primary

UT-SCC-9

81 male

T2N1M0 WD

III

neck

metastasis

supraglottic none larynx glotticlarynx RT

UT-SCC-10

62 male

TlNOMO MD

I

tongue

primary

scclinguae

UT-SCC-11

58 male

TlNOMO MD

I

larynx

recurrence glotticlarynx RT

T1N1M0

hypopharynx (RT) supraglottic larynx RT persistent tongue primary recurrence supraglottic RT larynx

metastasis

none

Previoustx Culture Authenti- Availability Primary reference method cation details Seefoot- Explant note UT-04

AC

Pekkola-Heino et al. 1992

50Gy2 months 75 Gy1 year4 months 75Gy 1 year4 months 57Gy 1 year6 months

Explant

AC

Explant

AC

Pekkola-Heino etal. 1992 Servomaaetal. 1996

Explant

AC

Explant

AC

Explant

AC

50Gy6 months

Explant

AC

Explant

AC

70Gy4 months

Explant

AC

Explant

AC

II

skin ofnose

primary

skin ofnose

none

UT-SCC-12B 81 female TZNOMO MD

II

neck

metastasis

cutisnasi

none

Explant

AC

supraglottic larynx tongue

RT

75 Gy5 Explant months 66Gy to Explant primaryand 53 Gy to neck; 2months

AC

UT-SCC-13

53 male

T3N0M0 MD

III

larynx

recurrence

UT-SCC-14

25 male

T3N1M0

III

tongue

primary

MD

RT

AC

Pekkola-Heino etal. 1992 Pekkola-Heino etal. 1992 ibid. Pekkola-Heino etal. 1995 Soukkaetal. 1995 Pekkola-Heino etal. 1995 Servomaaet al. 1996 Johanssonetal. 1997 ibid.

207

UT-SCC-12A 81 female T2N0M0 WD

Servomaaet al. 1996

Head and Neck Cancers

Cell line name

Continued on next page

Cellline name UT-SCC-15

Age Gender TNM 51 male

Grade Stage Specimen site Typeof lesion

TlNOMO WD

I

tongue

recurrence tongue

UT-SCC-16A 77 female T3N0M0 PD

III

tongue

primary

UT-SCC-16B 77 female T3N0M0 PD

III

neck

metastasis

UT-SCC-17

65 male

II

sternum

metastasis

UT-SCC-18

56 male

T3N1M0 MD

III

gingiva

persistent

UT-SCC-19A 44 male UT-SCC-19B 44 male

T4N0M0 MD T4N0M0 MD

IV larynx IV larynx

T2N0M0 PD

UT-SCC-20A 58 female TlNOMO MD

UT-SCC-20B 4

79 male 79 male

MD

T3N0M0 MD III TlNOMO MD I

primary persistent primary

floorofmouth primary

floor ofmouth residual

tongue larynx

primary residual

Prev. tx RT

Previoustx Culture Authenti- Availability Primary method cation reference details

65Gy Explant tongue5 months,51 Gyneck tongue RT 68tongueExplant 3months tongue Explant RT 50Gy neck RT 64 Gy 1 Explant supraglottic larynx year2 months gingiva Explant RT 68Gy 1month glotticlarynx none Explant glotticlarynx RT Explant 62Gy larynx,52 Gyneck, 2months floorofmouth RT Explant 63Gy tongue,55 Gyneck 1 month floorofmouth RT 63 Gy Explant tongue,55 Gyneck 6 months tongue RT 10 Gy Explant glotticlarynx RT Explant 68Gy2 year7 months

AC

Pekkola-Heino etal. 1996

AC

ibid.

AC

ibid.

AC

Kiuru etal. 1997

AC

Johansson etal. 1997 Elomaaetal. 1995 ibid.

AC AC

AC

Pekkola-Heino etal. 1996

AC

ibid.

AC AC

Elomaa et al. 1995

Continued on next page

Lansford et al.

UT-SCC-21 UT-SCC-22

female NS

I

Primary location

208

Table 1. (continued)

Gender TNM Grade Stage Specimen site

UT-SCC-23

66 male

T3N0M0 WD

III larynx

UT-SCC-24A 41 male

T2N0M0 MD

II

UT-SCC-24B 41 male T2N0M0 MD UT-SCC-25

tongue neck

II

tongue

50 male T2N0M0 WD II

Type of lesion

Primary location

persistent primary primary

Prev. Previous tx Culture Authenti- Availability Primary tx details method cation reference

transglottis

RT

tongue

persistent tongue metastasis recurrence tongue

RT RT

UT-SCC-26A 60 male

T1N2M0 MD

IV neck

metastasis

hypopharynx RT

UT-SCC-26B 60 male

T1N2M0 MD

IV neck

metastasis

hypopharynx RT

II

gingivaof recurrence maxilla UT-SCC-28 58 female T2N0M0 WD II floorofmouth persistent primary primary UT-SCC-29 82 male T2N0M0 WD II larynx UT-SCC-30 77 female T3N1M0 WD III oraltongue primary UT-SCC-27 71 male

T2N0M0 PD

UT-SCC-31

58 male

T3N2BM0 M-WD IV floorofmouth primary

UT-SCC-32

66 male

T3N0M0 WD

UT-SCC-33

86 female T2N0M0 MD

III II

tongue

glotticlarynx none tongue none

Explant

AC

Kiuruetal.1997

Explant

AC

Explant 62Gy1 month 65,63Gy Explant tongue,50 Gyneck Explant 60Gy completed 2months previous Explant 60Gy completed 6months previous Explant 64Gy4 months 65Gy1,5 Explant months Explant Explant

AC

Pekkola-Heino et al. 1996 ibid.

AC AC

Explant

AC

Explant

AC

ibid.

Explant

AC

ibid.

floorofmouth none

persistent tongue primary gingivaof primary mandible

RT none

66Gy3 weeks

AC

Johanssonetal. 1997

AC

ibid.

AC

ibid.

AC AC

Kiuruetal.1997 ibid. Elomaaetal.1995 Pekkola-Heino etal.1996 Kiuruetal.1997

Continued on next page

209

gingivaof mandible

RT gingivaof maxilla floorofmouth RT

75Gy8 months none

Head and Neck Cancers

Table1. (continued) Cell line Age name

(continued)

Cell line name

Age Gender TNM

Grade Stage Specimen site Type of lesion

Primary location

Prev. tx

UT-SCC-34

63

male

T4N0M0

WD

IV

none

UT-SCC-35

50 male

T2N0M0

MD

II

supraglottic larynx glottic larynx

UT-SCC-36 UT-SCC-37

46 male T4N1M0 61 female T2N0M0

PD WD

IV II

UT-SCC-38 UT-SCC-39

66 male 81 male

T2N0M0 T2N0M0

MD MD

UT-SCC-40 UT-SCC-41

65 male 76 male

supraglottic larynx larynx

primary

primary primary

II II

floor of mouth gingiva of mandible larynx larynx

primary primary

T3N0M0 WD T3N0M0 WD

III III

tongue tongue

primary recurrence

residual

male

T4N3M0

PD

IV

larynx

primary

UT-SCC-42B

43

male

T4N3M0

PD

IV

neck

primary

UT-SCC-43A

75 female T4N1M0

MD

IV

primary

UT-SCC-43B

75 female T4N1M0

MD

IV

UT-SCC-44

71

gingiva of mandible gingiva of mandible gingiva of maxilla floor of mouth gingiva of maxilla

female T4N2BM0 PD

UT-SCC-45 76 male UT-SCC-46A 62 male UT-SCC-46B

62

male

IV

T3N1M0 TlNOMO

PD PD

III I

TlNOMO

WD

I

gingivaof maxilla

persistent primary persistent primary primary primary primary

supraglottic larynx supraglottic larynx gingiva of mandible gingiva of mandible gingiva of maxilla floor of mouth gingivaof maxilla (retromolar) gingivaof maxilla (retromolar)

Explant

AC

Explant

AC

Explant Dx: lichen Explant ruber planus Explant Explant

AC AC AC AC

Explant Explant

AC AC

Explant

AC

none

Explant

AC

none

Explant

AC

Explant

AC

Explant

AC

Explant Explant

AC AC

Explant

AC

RT none none none none none RT none

RT RT none none none

66 Gy4 months

65 Gy3 weeks

64 Gy 4 weeks 62 Gy 4 weeks

Primary reference Kiuru et al. 1997

Continued on next page

Lansford et al.

UT-SCC-42A 43

floor of mouth gingiva of mandible glottic larynx supraglottic larynx tongue tongue

Previous tx Culture Authenti- Availability method cation details

210

Table 1.

(continued)

Cell line name

Age Gender TNM

Grade Stage Specimen site Type of lesion

Primary location

UT-SCC-47 UT-SCC-48 UT-SCC-49

78 male 81 male 76 male

T2N0M0 T3N0M0 T2N0M0

PD MD MD

II II II

floor of mouth primary parotidgland primary larynx primary

floor of mouth none parotid gland none glottic larynx none

UT-SCC-50

70 male

T2N0

PD

II

larynx

recurrence

glottic larynx

RT

UT-SCC-51

62 male

T2N0M0

M-WD II

larynx

recurrence

glottic larynx

RT

UT-SCC-52

51

T2N1M0

MD

III

tongue

RT

UT-SCC-53 UT-SCC-54A UT-SCC-54B

76 male T4N2cM0 WD 58 female T2N0M0 WD 58 female T2N0M0 WD

IV II II

persistent primary maxillary sinus primary buccal mucosa primary buccal mucosa recurrence

maxillary sinus none none buccal mucosa

UT-SCC-55

76 male

T4N1M0

MD

IV

primary

EV-SCC-1

55 male

T2N0M0

M-WD II

gingiva of mandible alveolus

primary

gingiva of mandible alveolus

EV-SCC-2 EV-SCC-3

52 male 65 male

T2N2aM0 WD IV T2N2bM0 P-MWDIV

lymph node tonsil

metastasis primary

pharynx tonsil

EV-SCC-4

45 male

T3N1M0

floor of mouth primary

floor of mouth

tongue lymph node lymph node

tongue hypopharynx tongue

male

EV-SCC-7 19 male EV-SCC-10M 66 male EV-SCC-14M 59 male

M-WD III

T4N0M0 MD T4N1M0 MD T2N2bM0 MD

IV IV IV

tongue

primary metastasis metastasis

Prev. tx

none

Previous tx Culture Authenti- Availability method cation details Explant Explant Explant

A second primary later diagnosed 62 Gy 12 Explant year rad. induced? 67 Gy 22 Explant months dysplasia 65 Gy3 Explant weeks Explant Explant Dx was Explant lichen ruben Explant Nude mouse Nude mouse Nude mouse

Primary reference

AC AC AC AC

Head and Neck Cancers

Table 1.

AC AC AC AC AC AC AR

Somers et al. 1992

AR AR

Patel et al. 1996 Somers et al. 1992

AR

Somers et al. 1992

AR AR AR

Patel et al. 1996 Patel et al. 1996 Patel et al. 1996

211

Continued on next page

Table I.

(continued) Age Gender TNM

EV-SCC-17P 34 male EV-SCC-17M 34 male EV-SCC-18 67 male 62 62 74 62 71 42 70 77 66 62

AMC-HN-1 AMC-HN-2 AMC-HN-3 AMC-HN-4 AMC-HN-5 AMC-HN-6 AMC-HN-7 AMC-HN-8 AMC-HN-9

54 57 63 65 67 61 59 46 66

T4N0M0 PD IV T4N0M0 ? IV T3N1M0 P-MWDIII

male male male male male male male male female male

T3N1M0 T3N1M0 T2N0M0 T4N0M0 T2N1M0 TlN1M0 T3N0M0 T2N2bM0 NS T2N2M0 NS 41 male TlN2M0 62 male T4N3M0 61 male T2N0M0 87 female NS 72 male T4N2M0 66 male T2N0M0 male male male female male male male male female

T1N0M0 T4N2M0 T3N1M0 T4N0M0 T3N0M0 T4N2M0 T4N2M0 T3N2M0 T4N2M0

tongue lymph node larynx

primary metastasis primary

Primary location

Prev. tx

AR AR AR

tongue tongue larynx

P-MWDIII ? III MD II MD IV MD III PD III WD III MD IV MD PD IV

tongue primary tongue lymph node metastasis tongue glottis none glottis primary retromolar none retromolar primary pyriformsinus none pyriformsinus primary floor of mouth none floor of mouth primary vocalcord none vocalcord primary epiglottis none epiglottis primary floor of mouth none floor of mouth supraglottis none supraglottis primary

PD PD MD PD Un-D MD

IV IV II

MD MD MD WD MD MD WD WD Un-D

I IV III IV III IV IV IV IV

tonsil tonsil vocalcord nasal tip retromolar aryepiglottic fold tongue hypopharynx larynx tongue nasalcavity floorofmouth larynx lymphnode lymphnode

IV II

primary primary primary primary primary primary primary recurrence primary recurrence recurrence primary recurrence metastasis metastasis

Previous tx Culture Authenti- Availability method cation details

tonsil tonsil vocalcord nasal tip retromolar aryepiglottic fold tongue hypopharynx larynx tongue nasalcavity floorofmouth larynx larynx parotid

AR AR

Primary reference Patel et al. 1996 Patel et al. 1996 Patel et al. 1996

none none none none none none

Explant Explant Explant Explant Explant Explant

Patel et al. 1996 Patel et al. 1996 Van Dyke et al. 1994 Van Dyke et al. 1994 Van Dyke et al. 1994 Van Dyke et al. 1994 Van Dyke et al. 1994 Van Dyke et al. 1994 Van Dyke et al. 1994 Van Dyke et al. 1994 Kelkeretal. 1996 Van Dyke et al. 1994 Van Dyke et al. 1994 Van Dyke et al. 1994 Van Dyke et al. 1994 Van Dyke et al. 1994 Van Dyke et al. 1994

none S,RT,CX none S,RT,CX S,RT none S,RT S,RT none

Explant Explant Explant Explant Explant Explant Explant Explant Explant

Kimet al. 1997 Kim etal. 1997 Kim etal. 1997 Kim et al. 1997 Kim et al. 1997 Kimetal.1997 Kimetal.1997 Kim et al.1997 Kim etal.1997

Explant Explant Explant Explant Explant Explant Explant Explant

Continued on next page

Lansford et al.

EV-SCC-19P EV-SCC-19M HFH-SCC-3 HFH-SCC-4 HFH-SCC-6 HFH-SCC-8 HFH-SCC-11 HFH-SCC-12 HFH-SCC-15 HFH-SCC-16 HFH-SCC-17 HFH-SCC-19 HFH-SCC-20 HFH-SCC-28 HFH-SCC-29 HFH-SCC-33 HFH-SCC-42

Grade Stage Specimen site Type of lesion

212

Cell line name

Table 1.

Age Gender TNM 64 male

UD-SCC-2 58 UD-SCC-3 45 47 UD-SCC-4 UD-SCC-5 44 UD-SCC-6 64 HNSCCUM-01T 65 HNSCCUM-02T 44

male male male male male male

Grade Stage Specimen site Type of lesion T3N2BM0 PD IV ant.tongue primary

TlN3M0 T2N2cM0 T3N1M0 T1N1M0 T2N0M0 T2NcM0

PD PD MD PD PD PD

male T3N3bM0 PD

HNSCCUM-03T56 male

T3N2bM0 MD

HNSCCUM-04N52 male TlNlMO

MD

Primary location tonsil

Prev. tx

IV IV III III IV IV

pyriformsinus lymphnode tongue supraglottis tongue vallecula

IV

baseoftongue primary

baseoftongue none

IV

pyriformsinus primary

pyriformsinus none

III

supraglottic

primary

supraglottic

none

primary metastasis primary primary primary primary

pyriformsinus aryepiglottic tongue tongue tongue vallecula

2,ND,RT none none none

HNSCCUM-05N 54

male TlN2bM0 MD

IV oropharynx

primary

oropharynx

none

HNSCCUM-06N65

male T2N2cM0 PD

IV vallecula

primary

vallecula

none

HNSCCUM-07N 53

male T1N2bM0 MD

IV

pyriformsinus primary

pyriformsinus none

III III

labialmucosa primary BOT primary

labialmucosa BOT

TU-138 TU-159

53 male 44 male

female T4N2bM0 WD male T3N0M0 WD female T3N2bM0 MD

IV FOM III larynx IV tonsil

male

T2N2cM0 MD

IV

hypopharynx primary

male male

PD T2N2aM0 MD T2N2cM0 MD

IV IV

tonsil lymphnode

primar primary primary

primary metastasis

FOM larynx tonsil tongue hypopharynx tonsil hypopharynx

Explant Explant Explant Explant Explant

Primary reference Contact H. Bier Ballo et al.1999 Ballo et al. 1999 Ballo et al. 1999 Ballo et al. 1999 Ballo et al. 1999 Ballo et al. 1999

Contact H. Bier Contact H. Bier Contact H. Bier Contact H. Bier Contact H. Bier Contact H-JWelkoborsky Contact H-JWelkoborsky Contact H-JWelkoborsky Contact H-JWelkoborsky Contact H-JWelkoborsky Contact H-JWelkoborsky Contact H-JWelkoborsky Lengyeletal.1995 Beckhardt et al. 1995 Beckhardt et al. 1995 Beckhardtet al. 1995 Beckhardtet al. 1995 Beckhardtetal.1995 Beckhardtetal.1995

Beckhardt et al.1995 Beckhardt etal. 1995 Continued on next page

213

70 TU-I67 54 TU-177 40 TU-182 TU-202 60 TU-212 TU-358B TU-686 (MDA?) 44 TU-158LN 60 TU-212-LN

T3N0M0 WD T3N0M0 MD

Previous tx Culture Authenti- Availability method cation details Explant

Head and Neck Cancers

Cell line name UD-SCC-1

(continued)

(continued)

214

Table 1.

Table 1 Part 2 Nasopharyngeal carcinoma (NF'C) cell Lines Age Gender TNM

Grade Stage Specimen site Type of lesion

NPC/HK1

41

male

WHO

NPC-KT

74

female

Lymphoepithelioma (WHO III)

C15

13

female T4N3M1

WHOIII

nasopharynx

C17

38

male

T3N3

WHOIII

C18

47

male

T4N3

WHO III

I

nasopharynx

recurrent

Primary location nasopharynx

Prev. tx RT

nasopharynx

none

primary

nasopharynx

none

cutaneous met

metastasis

nasopharynx

XRT, cx

lymphnode

metastasis

nasopharynx

CX

nasopharynx

primary

Previous tx Culture Authenti- Availability method cation details

Primary reference

600radsto Explant Nude nasopharynx mouse with total response for 17.5years. Recurrence noted 1 month prior to biopsy Explant of NPC cells fused to adenoid cells using Sendai virus Nude mouse Primary, Nude mouse RT to head and neck followed by bone and skin metastatic relapse treated with bleomycin, cis-platinum, 5-FU 2 mos of Nude bleomycin, mouse cis-platinum, 5-FU

Huang et al. 1980

Takimoto et al. 1984

Busson et al. 1988 Busson et al. 1988

Busson et al. 1988

Continued on next page

Lansford et al.

Cell line name

Table 1. (continued) Cell line name

Age Gender TNM

2117 CG1

47 male

cNE1 CNE2 HNE-1

27 male

NM8

Grade Stage Specimen site

Type of lesion

Primary location

Prev, tx

WHO III

nasopharynx

primary nasopharynx none

WHO II

nasopharynx

primary nasopharynx none

1° squamous nasopharynx primary nasopharynx none CA nasopharynx 1°squamous nasopharynx primary nasopharynx none CA nasopharynx nasopharynx primary nasopharynx none WHO III

nasopharynx

primary

nasopharynx

HNE-3 HONE-I NPC-TW01

64 male

NPC-TW01N1 64 male

Previoustx details

WHOI

nasopharynx primary

WHOI

nasopharynx

none none

NPC-TW02

36 female

WHO I

nasopharynx primary

nasopharynx none

NPC-TW03

36 male

WHO II B

nasopharynx primary

nasopharynx none

none

Culture Authenti- Availmethod cation ability Nude mouse Explant Nude mouse Explant Explant

Primary reference Colbum et al. 1989 Chang et al. 1989 Colbum et al. 1989

Head and Neck Cancers

Table 1 Part 2 Nasopharyngeal carcinoma (NPC) cell lines

Colbum et al. 1989 Nude mouse Nude mouse

Colburn et al. 1989 Yaoetal.1990 Yaoetal.1990 Linetal.1990 Linetal.1990

Linetal. 1990 Linetal. 1993 Continued on next page

215

Nude mouse Explant Nude mouse Fromnude mouse solid tumor mass after injecting NPC-TW01 NPC line Explant Nude mouse Explant Nude mouse

Li et al. 1989

216

Table 1. (continued) Table 1 Part 2 Nasopharyngeal carcinoma (NPC) cell lines Celllinename Age Gender TNM Grade

Specimen Stage Site

TypEof lesion

Primary location

Prev. tx

WHOIIB

nasopharynx primary

nasopharynx none

NPC-TWOS 47 male

WHOI

nasopharynx primary

nasopharynx none

NPC-TW06

58 female

WHOIIB

nasopharynx primary

nasophraynx none

NPC-TW07

75 male

WHOIIB

nasopharynx primary

nasopharynx none

NPC-TW08

50 male

WHOI

nasopharynx primary

nasopharynx none

NPC-TW09

30 male

WHOIIB

nasopharynx primary

nasopharynx none

NPC-TW04

36 female

Previous tx details

Culture Authenti-Availmethod cation ability Explant Nude mouse Explant Nude mouse Explant Nude mouse Explant Nude mouse Explant Nude mouse Explant Nude mouse

primary reference Linetal.1993 Linetal.1993 Linetal. 1993 Linetal.1993 Linetal. 1993 Linetal.1993 Continued on next page

Lansford et al.

Head and Neck Cancers

217

Table1. Footnotes Cell line name: (HeLa?) - See text regarding cross-contamination. For HNSCCUM cell lines the suffix T means primary tumor; N means metastatic lymph node. TNM: Tumor, node, metastasis classification, stage at primary diagnosis only, NS = not staged. Specimen Site column: BOT, back of tongue; RMT, retromolar trigone; FOM, front of mouth Grade column: WD, well differentiated; PD, poorly differentiated; MWD, moderately well differentiated; M-WD, moderately to well differentiated; P-MWD; poorly to moderately well differentiated; Un-D, undifferentiated; WHO = World Health Organization. Culture method column: E on RC, Explant on rat collagen; T-C-D, Trypsin collagenase digest; E on FFL, Explant on fibroblast feeder layer; E on irr 3T3 FFL, Minced tumor fragments (explant) co-cultivated with irradiated 3T3 fibroblasts; SCC-13 requires a feeder layer for survival and proliferation Prior Treatment column: S, surgery; RT, radiotherapy; CX, chemotherapy; ND, neck dissection. Prior Treatment Details column: UM-03, Local excision with partial mandibulectomy and suprahyoid neck dissection; UM-04, CX with BOMM x2 (75% response by primary, apparently complete response of neck node); UM-13, 54 Gy and anterior esophagectomy, partial tracheal resection, total thyroidectomy; UM-14C, 5-FU, Velbam, and methotrexate ctx failed; UM-17A, primary and bilateral lateral necks got rt, total dose = 6600 rads; UM-17B, bilateral lateral necks got rt, total dose = 6600 rads; UM-20, RT was 6500 rads to primary, 4000 rads to ipsilateral neck. S was total laryngectomy; UM-27 primary excision and postop RT of 5000 rad; UM-29, Three courses of pre-op Cx: cis-platinum and MGBG; UM-30, Pre-op Cx: Cis-platinum and MGBG; UM-33, cisplatin and MGBG chemo x 2 courses without tumor response; UM-37, 3 courses of cis-platinum and 5-FU, initially with excellent response, but after 3 months developed a large anterior jugular, left-sided neck node. Then full course RT. UM-40,5FU, Platinol, and 6480 Rads to the neck UM-46, 6000 rads supraglottic, then supraglottic laryngectomy and R radical neck; UM-74A, cisplatin & 5-FU x 3 courses, 6500 rads external + 2500 rads implant, hemiglossectomy & radical neck; UM-74B, cisplatin & 5-FU x 3 courses, 6500 rads external t 2500 rads implant, hemiglossectomy & radical neck, tracheotomy, 5-FU+ CBDCA, UM-81B, 2nd primary of tonsillar pillar in heart transplant recipient (> 34 mos on immunosuppression, supraglottic laryngectomy, laryngectomy; For UT-SCC cell lines XX Gy X months indicates radiation dose given and the time prior to surgery; UT-04,8 years earlier had radiotherapy for the mediastinum for morbus Hodgkin + MOPP chemotherapy x 6. ND = neck dissection. Authentication column: D = DNA comparison or fingerprinting, H = HLA typing, I = isozyme analysis. For the UM-SCC-cell lines, D indicates that the tumor cell line has been compared to microsatellite polymorphisms from normal tissue or cells from the same individual. For examples see Frank et al. 1997 Availability column: AR, Available upon Request. UM-SCC-AR, UM-SCC cell line are Available upon Request. UM-SCC cell lines are intellectual properties of the University of Michigan. Michigan grants permission for other investigators to use these lines provided that they are not distributed and that they are not used for commercial exploitation. The University of Michigan retains ownership of all lines, progeny and products. Contact TLW. To inquire about the use of PCI-SCC cell lines please contact Theresa L. Whiteside. AC, UT-SCC cell lines are available for collaborative studies. Please contact Reidar Grenman. For UD lines, contact Henning Bier; For HNSCCUM lines, Contact Hans-J Welkoborsky. DSMZ, German Tissue Culture Collection. Published resources, including cell lines, should be freely available for non-commercial use and application.

Cell line

Prior RX

RPMI 2650

RT/S

Detroit 562

none

FaDu

none

UM-SCC-1 UM-SCC-2

S

UM-SCC-3

S

UM-SCC-4

cx

UM-SCC-5

S

Treatment description

Original pathology

In vitro morphology

Nude mouse morphology

Continued on next page

Lansford et al.

Monolayer colony forming growth with little tendency to stratify Monolayer colony forming growth with little tendency to stratify Monolayer colony forming growth with little tendency to stratify Regression of tumor in nude mice Local excision with partial Progressive growth in Originally, a 1.5cm SCC in mandibulectomy and nude mice the right lower alveolus extending into the socket of suprahyoid neck dissection a bicuspid tooth Slow growth in the nude mouse; keratin horn formation CX with BOMM x2 Inoculation of 2 nude mice Tumor involves right tongue resulted in progressive (75% response by primary, near tonsillar pillar with a growth in one and stabilized apparently complete response large defect in the BOT tumor in the other of neck node) Monolayer non-stratifying cells forming monolayer cultures. Spreading cells with few or no cellsmigratingindependently from the large islands. Same morphology in passage 4 and passage77

218

Table 2. Head and neck squamous cancer cell line characteristics

Cell line

Prior RX

UM-SCC-6

none

UM-SCC-7

none

UM-SCC-8

RT

UM-SCC-9

RT

Treatment description

Original pathology

In vitro morphology

This specimen was taken from a 4 × 1.5 cm exophytic SCC of the right alveolar process growing down toward the FOM. A 3.5 × 1.5 cm firm mobile metastatic ipsilateral superior jugular digastric node was present at this time Pathologically, a partly necrotic keratinizing well differentiated SCC

The specimen is from a 4 x 1.5 cm exophytic SCC of the left anterior tongue accompanied by erythroplakia extending to the FOM almost to the mandibular alveolus

Stratifying colonies with a limited propensity for mound or dome formation. Some areas were undifferentiated while others had dyskeratosis and involution of the nuclei

Nude mouse morphology Inoculation of 2 nude mice resulted in progressive growth in one and stabilized tumor in the other Progressive tumor growth in 12 of 13 nude mice, with tumor regression in one

Head and Neck Cancers

Table 2. (continued)

Regression of tumor in one nude mouse Regression of tumor in nude mice

Continued on next page

219

UM-SCC-10A

none

UM-SCC-10B UM-SCC-11A

S none

UM-SCC-11B

CX

UM-SCC-12

S

UM-SCC-13

RT/S

Treatment description

Original pathology

In vitro morphology

Infiltrative lesion of Growth primarily in islands epiglottis accompanied by of cells an ipsilateral 8 x 8 cmlymph node metastatic mass Monolayer non-stratifying culture with individual cells migrating independently of colonies

54 Gy and anterior esophagectomy, partial tracheal resection, total thyroidectomy

Nude mouse morphology

220

Table 2. (continued) Cell line Prior RX

Regression of tumor in one and stabilization of tumor in one of two inoculated nude mice Progressive tumor growth Regression of tumor in nude mice

Progressive growth in five and stabilized tumor in four of nine inoculated nude mice Progressive tumor growth in five and stabilized tumor in seven of 12 inoculated nude mice

Continued on next page

Lansford et al.

This recurrence is 9 months post rt and 8 months post anterior esophagectomy, partial tracheal resection, total thyroidectomy and was found at the site of the esophageal anastamosis. Microscopically, a well-differentiated keratinizing SCC with slight variation in nuclear size, some mitoses and intracellular bridges

Prior RX

Treatment description

UM-SCC-14A

S/S/RT/S

UM-SCC-14B

S/S/RT/S/S

UM-SCC-14C

S/S/RT/S/S/CX 5-FU, Velbam, and methotrexate ctx failed

UM-SCC-15

none

Original pathology A recurrent tumor 75 months after initial dx. involving a clinically positive contralateral jugular node and biopsy-proven local recurrence This local recurrence was not clinically evident but obtained from a mandibulectomy for osteoradionecrosis This recurrence is a 3 × 4cm submental tumor with two 3 cm nodes and several smaller nodes in the ipsilateral neck This specimen from an extensive lesion involving the posterior hypopharynx to the level of the prevertebral fascia from the nasopharynx to the introitus of the esophagus. Several positive neck nodes were also present

In vitro morphology

Nude mouse morphology Progressive tumor growth in nude mice

The UM-SCC15 cell culture undergoes spontaneous lysis at passage level 6–8 and thus does not represent a true established cell line

Head and Neck Cancers

Table 2. (continued) Cell line

Regression of tumor in one inoculated nude mouse

Continued on next page

221

Treatment description

none

UM-SCC-17A

RT

Primary tumor and bilateral lateral necks got rt, total dose = 6600 rads

UM-SCC-17B

RT

Primary tumor and bilateral lateral necks got rt, total dose = 6600 rads

A large cancer involving the left true and false vocal cords and extending up on the laryngeal surface of the epiglottis. Microscopic exam showed orderly nonkeratinized stratified squamous epithelium with good vascularization and scant fibrous stroma. Some loss of intercellular bridging, slight size and shape variation in cells and nuclei, and occasional individual cell keratinization were present

A fungating lesion of the left true and false vocal cords with swelling of the left arytenoid

In vitro morphology Primary cultures formed a single, large stratifying mound with very little lateral spread. With time in culture and repeated exposure to limited trypsinization, some cells were separated which themselves reattached in the same flask and formed small islands which also stratified. The domes arise from multipolar cells that form a monolayer in which small stellate clusters or rosettes form at regular intervals. This phenotype unchanged over 50+ passages Stratifying colonies that reach a certain size and then continue to to proliferate without expanding in size. Cells become densely packed within islands without forming confluent monolayers. This phenotype remains stable over 100 + in vitro passages Stratifying colonies that reach a certain size and then continue to proliferate without expanding in size. Cells become densely packed within islands without forming confluent monolayers. This phenotype remains stable over 100+ in vitro passages

Nude mouse morphology Stabilized tumor in one inoculated nude mouse

Regression of tumor in one and stabilization of tumor in one of two inoculated nude mice

Stabilized tumor in one inoculated nude mouse

continued on next page

Lansford et al.

UM-SCC-16

Original pathology

222

Table 2. (continued) Cell line Prior RX

UM-SCC-18

S/RT

UM-SCC-19

none

UM-SCC-20

RT/S

RT was 6500 rads to primary, 4000 rads to ipsilateral neck. S was total laryngectomy

Original pathology Recurrent disease 17 months s/p surgery, RT of a 2 × 2 cm necrotic mass in the right base of tongue extending into the vallecula, right aryepiglottic fold, and pyriform sinus with a 2.5 cm ipsilateral mid internal jugular chain This line comes from a 3 × 4 cm ulcerated mass involving the right BOT, extending just across the midline and anteriorly to the circumvillate papillae. One 3 cm firm jugulodigastric node on the right was also present This second recurrence of tumor was two lcm discrete SCCs of the hypopharynx with a large ipsilateral neck nodal metastasis from which this line was developed

In vitro morphology

Nude mouse morphology Progressive growth in one and stabilized tumor in seven of eight inoculated nude mice

Head and Neck Cancers

Table 2. (continued) Cell line Prior RX Treatment description

Regression of tumor in one and stabilization of tumor in one of two inoculated nude mice

Monolayer non-stratifying culture. Poorly differentiated histology with loose clusters of cells and individual cells migrating independently of colonies. A component of the cells grew in suspension independent of adhesion to a substrate, but these could not be propagated in culture

223

Continued on next page

Original pathology

none

An exophytic, ulcerated 3.5 × 3 an mass extending from the posterior oropharynx circumferentially around the hypopharynx at the level of the cricoid and extending down to the left pyriform sinus. A 1 x 2 cm firm mobile ipsilateral left midjugular vein node was present. This biopsy taken from the posterior arytenoids

UM-SCC-23

none

Tumor was a 1.5 × 1.5cm ulcerated lesion microscopically showing in-situ and invasive SCC

UM-SCC-24

RT/S/S

This specimen taken from the stomal recurrence that followed initial RT, hemilaryngectomy, and then total laryngectomy. Microscopically, a well-differentiated infiltrating neoplasm with finger-like projections

UM-SCC-25

RT/S/S

This recurrent SCC specimen was 5.5 long×3.5cm wide firm, non-fixed tumor of the mid-posterior pharynx extending down from the inferior pole of the tonsil toward the right hypopharynx. Micro had been well differentiated 2 months previously, now infiltrative poorly differentiated with necrosis.

Nude mouse morphology

Cuboidal cells mostly in colonies but with some breaking off to form small new colonies. Cells produce hemidesmosomes in culture

Large cuboidal cells in monolayer colonies

Lansford et al.

UM-SCC-22A

In vitro morphology

224

Table 2. (continued) Cell line Prior RX Treatment description

Continued on next page

Cell line UM-SCC-26

Prior RX Treatment description none

In vitro morphology Original pathology This invasive keratinizing SCC specimen was taken from the left tongue which extended well into the tongue base and up into the mobile tongue on the left side

UM-SCC-27

S/RT

This tumor, found one year after resection and RT, is a 3 cm mid jugular digastric neck node

UM-SCC-28

none

UM-SCC-30

CX

UM-SCC-31

UM-SCC-34

Primary excision and postop RT of 5000 rad

Nude mouse morphology

Head and Neck Cancers

Table 2. (continued)

A 0.6cm finn nodular neoplasm found to be invasive keratinizing well differentiated SCC Pre-op: Cis-platinum and MGBG

Monolayer non-stratifying islandforming culture. Predominantly spreading type of morphology

RT

This specimen is the persistent SCC at the tonsillar pillar. This was clinically accompanied by a 1 cm firm contralateral jugular digastric lymph node metastasis

Stratifying colonies that form domes

none

Tumor of the right anterior tonsillar pillar showing ulceration and moderate differentiation Continued on next page

225

The persistent tumor was a 2cm mass over the right aryepiglottic fold and superior pyriform sinus with a fixed ipsilateral true vocal cord. The neck had a 1 x 1 cm ipsilateral jugular node. Microscopically, keratinization present

Prior RX Treatment description none

UM-SCC-36

none

UM-SCC-37

CX,RT

Nude mouse morphology

Lansford et al.

3 courses of cis-platinum and 5-FU, initially with excellent response, but later developed a large anterior jugular, leftsided neck node

Original pathology In vitro morphology Extensive oropharyngeal carcinoma involving all of the left tonsil, soft palate, and posterior pharyngeal wall with extension into the tongue. Tumor occupies the entire BOT and extends anteriorly into the mobile tongue on the left. A 1 x 1 cm left high jugular node was present An exophytic SCC of the left true vocal cord, ventricle, false vocal cord with extension to the epiglottis. Microscopically, an infiltrating neoplasm composed of nests and cords of malignant cells which have pleomorphic nuclei and clear to eosinophilic cytoplasm, apparently arising in normal squamous mucosa, and containing focal areas of keratinization Extensive tumor involving the posterior pharyngeal wall, both lateral pharyngeal walls, superiorly to the right tonsil and behind the velum and also involving the left tonsillar fossa, and inferiorly to the posterior pharynx into both pyriform sinuses. Micro: infiltrative, moderately well differentiated

226

Table 2. (continued) Cell line UM-SCC-35

Continued on next page

Cell line

Prior RX Treatment description

UM-SCC-38

none

UM-SCC-39

none

UM-SCC-40

RT, CX

UM-SCC-41

none

UM-SCC-42

S

5FU, Platinol, and 6480 Rads to the neck

Original pathology

In vitro morphology

Continued on next page

227

Nude mouse morphology A 3-5cm ulcerative tumor in the Monolayer non-stratifying island right tonsillar fossa extending to forming cultures. Pleomorphic with the right BOT, found infiltrative both cuboidal and spreading cell on micro. A 2cm and a 0.5 cm morphologies and a tendency for nodal metastasis were also some cells to migrate independently present of the colonies A right pyriform sinus mass with Stratifying colonies that reach a a 4 × 4 and a 3 ×3 cm ipsilateral certain size and then continue lymph node neck metastases to proliferate without expanding in size. Cells become densely packed within islands without forming confluent monolayers A large high cervical esophageal carcinoma which eroded into the larynx Tumor involved the right arytenoid. A 1 × 2 cm right jugulodigastric node was also present This specimen represents persistent tumor two months after laryngopharyngectomy with left radical neck dissection for a large, friable left pyriform sinus mass with a 1 cm exophytic mass at the right cricoid. The persistent cancer involved cervical lymph nodes and extended deeply into the prevertebral tissues

Head and Neck Cancers

Table 2. (continued)

228

Table 2. (continued) Cell line Prior RX Treatment description UM-SCC-46

RT/S

UM-SCC-49

UM-SCC-50

none

6000 rads supraglottic, then supraglottic laryngectomy and R radical neck

Original pathology

In vitro morphology

Nude mouse morphology

Continued on next page

Lansford et al.

An unresectable recurrent 4 × 3cm SCC of the larynx with tracheal extension and supraglottic extension to below the contralateral clavical. Microscopically, large fragments of exudate containing parakeratotic keratin pears thought to possibly be neoplastic, although viable SCC epithelium not identified with certainty A large ulcerated mass involving the left half of the tongue from the junction of the middle third of the tongue to include the BOT on the left and extending across the midline. A 2.5 cm firm high jugulodigastric node and a smaller submental node on the left are also present Exophytic tumor of the right base of tongue, 4 × 3 cm, extending to left tonsil and to the midline of the vallecula. A 3 × 3 cm jugulodigastric node and a 4× 4cm submental extension

Prior RX Treatment description

UM-SCC-52

UM-SCC-55

RT

UM-SCC-59

UM-SCC-62

none

Original pathology

In vitro morphology

Nude mouse morphology

A left vallecula carcinoma with extension through the epiglottis to involve the laryngeal surface of the epiglottis and crossing the midline. The cancer extended down the left lateral pharyngeal wall to involve the left aryepiglottic fold, the left arytenoid, the left false vocal cord as well as the right false vocal cord. Pt. had a 5 × 6cm firm, slightly mobile node Monolayer non-stratifying island-forming culture. Has both cuboidal and spreading morphologies This specimen arose from lichen planus and was taken from a 4.5 × 3.5 ulcerative lesion extending from the free lateral margin of the tongue into the floor of the mouth, but not attached to the mandible. A 3.5cm ipsilateral jugulodigastric lymph node was present A 6cm ulcerative lesion in the left tonsillar fossa with extension to the soft palate and base of tongue. A 2 × 2cm left jugulodigastric node was also present

229

Continued on nextpage

Head and Neck Cancers

Table 2. (continued) Cell line

Cell line UM-SCC-80

Prior RX Treatment description

UM-SCC-81A

none

Immunosuppression × 20mo for heart transplant. Hemilaryngectomy initially later total laryngectomy for recurrent cancer

UM-SCC-81B

S,S

Immunosuppression × 34 mo for heart transplant

UM-SCC-82A

none

Nude mouse morphology

Lansford et al.

In vitro morphology Original pathology A 6 × 5 cm mass at the left tonsil, posterior tonsil and hypopharynx, and upper esophagus. Micro: a welldifferentiated, keratinizing SCC with abnormal mitoses. Occasional cells are markedly abnormal and show large hyperchromatic nuclei. High mitotic index. Focal necrotic changes in some fields. A 2 × 3 cm left nodal metastasis present A polypoid mass extending from Thin and relatively large the anterior commissure and cytoplasm involving a portion of the anterior left and right cords as well as a mass extending along the left true and false vocal cords involving the left arytenoid Tonsillar pillar carcinoma. Thought to be second primary cancer On microscopy, an infiltrative, keratinizing SCC in nests, strands and sheets. Varying amounts of cytoplasm with indistinct cell borders. Nuclei are enlarged, pleomorphic and vesicular. Abundant mitoses present and many abnormal. Macronucleoli prominent

230

Table 2. (continued)

Continued on next page

(continued) Prior RX Treatment description

Original pathology

UM-SCC-82B

RT

SCC-12B.2

none

SCC-12F.2a

none

SCC-12V

none

SCC-15

none

This recurrent SCC specimen is from a firm mass at the left BOT, left lateral tongue, tonsillar fossa, retromolar trigone, and soft palate with ulceration. A 4× 6cm left jugular digastric mass was also present. On micro, the SCC deeply invaded tongue muscle and the internal jugular vein and sternocleidomastoid SCC-12 is a heterogeneous tumor harvested from an immunocompromized patient and consisting of three distinct subclones, ‘F.2a,’ ‘B2,’ and ‘V’ SCC-12 is a heterogeneous tumor harvested from an immunocompromized patient and consisting of three distinct subclones, ‘F.2a,’ ‘B2,’ and ‘V’ SCC-12 is a heterogeneous tumor harvested from an immunocompromized patient and consisting of three distinct subclones, ‘F.2a,’ ‘B2,’ and ‘V’ Monolayer colony forming growth with little tendency to stratify

External beam radiation and radiation implants 7 months earlier

In vitro morphology

Nude mouse morphology

231

Continued on next page

Head and Neck Cancers

Table 2. Cell line

S

PCI-2

none

PCI-3

none

PCI-4A

none

PCI-4B

none

Original pathology

In vitro morphology

Nude mouse morphology

Cells grow as sharply demarcated, compact islands with a distinct epithelial morphology and positive keratinization. Doubling time = 66 hr Cells grow as sharply demarcated, compact islands with a distinct epithelial morphology and positive keratinization Cells grow as sharply demarcated, compact islands with a distinct epithelial morphology and positive keratinization

Tumor growth in nude mice pretreated with cyclophosphamide. Moderately well differentiated, as was the original tumor

Tumor growth in nude mice pretreated with cyclophosphamide. Moderately well differentiated, as was the original tumor Tumor growth in nude mice pretreated with cyclophosphamide. Moderately well differentiated histology in contrast to the well differentiated original tumor Cells grow as diffuse, loose Tumor growth in nude mice aggregates that fail to stratify. pretreated with cyclophosThey possess numerous micro- phamide.Welldifferentiated villi and positive keratinization. as was the original tumor Doubling time = 58 hr Cells grow as diffuse, loose Tumor growth in nude mice aggregates that fail to stratify. pretreated with cyclophosThey possess numerous micro- phamide. Well differentiated villi and positive keratinization. as was the original tumor Doubling time = 58 hr Continued on next page

Lansford et al

PCI-1

232

Table 2. (continued) Cell line Prior RX Treatment description

Prior RX Treatment description

Original pathology

PCI-5

none

PCI-6A

none

PCI-6B

S/RT

PCI-7

none

PCI-8

none

Cells grow as sharply demarcated, compact islands with a distinct epithelial morphology and positive keratinization Lymph node extracapsular spread Cells grow as sharply demarcated, compact islands with a distinct epithelial morphology and positive keratinization. Doubling time = 68 hr Cells grow as sharply demarcated, compact islands with a distinct epithelial morphology and positive keratinization. Doubling time = 106 hr Cells grow as sharply demarcated, compact islands with a distinct epithelial morphology and positive keratinization Cells grow as diffuse, loose aggregates that fail to stratify. They possess numerous microvilli and positive keratinization

In vitro morphology

Nude mouse morphology Tumor growth in nude mice pretreated with cyclophosphamide. Moderately well differentiated, as was the original tumor Tumor growth in nude mice pretreated with cyclophosphamide. Moderately well differentiated, as was the original tumor

Head and Neck Cancers

Table 2. (continued) Cell line

Tumor growth in nude mice pretreated with cyclophosphamide. Moderately well differentiated, as was the original tumor Tumor growth in nude mice pretreated with cyclophosphamide. Moderately well differentiated, as was the original tumor Tumor growth in nude mice pretreated with cyclophosphamide. Moderately well differentiated, as was the original tumor

233

Continued on next page

none

PCI-9B

none

PCI-10

none

PCI-11

none

PCI-12

RT/S

Lymph node extracapsular spread

In vitro morphology

Nude mouse morphology

Cells grow as sharply demarcated, compact islands with a distinct epithelial morphology and positive keratinization Cells grow as sharply demarcated, compact islands with a distinct epithelial morphology and positive keratinization Cells grow as sharply demarcated, compact islands with a distinct epithelial morphology and positive keratinization Cells grow as sharply demarcated, compact islands with a distinct epithelial morphology and positive keratinization. Doubling time = 124 hr

Tumor growth in nude mice pretreated with cyclophosphamide. Moderately well differentiated, as was the original tumor Tumor growth in nude mice pretreated with cyclophosphamide

Tumor growth in nude mice pretreated with cyclophosphamide. Moderately well differentiated, as was the original tumor Tumor growth in nude mice pretreated with cyclophosphamide. Poorly differentiated in contrast to the moderately well differentiated original tumor Cells grow as sharply demarcated, Tumor growth in nude mice compact islands with a distinct pretreated with cyclophosepithelial morphology and phamide positive keratinization Continued on next page

Lansford et al

PCI-9A

234

Table 2. (continued) Cell line Prior RX Treatment description Original pathology

PCI-13

none

PCI-14

S

PCI-15

none

PCI-15A

none

PCI-16

none

In vitro morphology

No lymph node extracapsular spread

Cells grow as sharply demarcated, Tumor growth in nude mice compact islands with a distinct epithelial morphology and positive keratinization. Doubling time= 86hr Cells grow as sharply demarcated, Tumor growth in nude mice pretreated with cyclophoscompact islands with a distinct stratified epithelial morphology phamide and positive keratinization. Pleomorphic nuclei with prominent nucleoli. Desmosomes between cells. Bundles of tonofilaments in the cytoplasm Cells grow as sharply demarcated, Tumor growth in nude mice pretreated with cyclophoscompact islands with a distinct epithelial morphology and phamide positive keratinization by IHC. Doubling time = 66 hr Cells grow as sharply demarcated, Tumor growth in nude mice pretreated with cyclophoscompact islands with a distinct epithelial morphology and phamide positive keratinization. Doubling time = 126 hr Cells grow as sharply demarcated, Tumor growth in nude mice compact islands with a distinct pretreated with cyclophosepithelial morphology and phamide positive keratinization

Lymph node extracapsular spread

Nude mouse morphology

Continued on next page

235

Original pathology

Head and Neck Cancers

Table 2. (continued) Cell line Prior RX Treatment description

PCI-17

S/RT

PCI-18

RT

PCI-22A PCI-22B PCI-25 PCI-26 PCI-28 PCI-30 PCI-33 PCI-34 PCI-37A PCI-37B

none none none none none none none none none none

PCI-38 PCI-39

none none

PCI-50

none

Original pathology

In vitro morphology

Cells grow as sharply demarcated, compact islands with a distinct epithelial morphology and positive keratinization Cells grow as sharply demarcated, compact islands with a distinct epithelial morphology and positive keratinization Lymph node extracapsular spread Doubling time = 80 hr Doubling time = 68 hr Lymph node extracapsular spread Doubling time = 200hr Doubling time = 93 hr Lymph node extracapsular spread Doubling time = 240 hr Doubling time = 52 hr Lymph node extracapsular spread Doubling time = 102 hr Doubling time = 73 hr Lymph node extracapsular spread Doubling time = 80 hr Doubling time = 91 hr No lymph node extracapsular spread Doubling time = 82 hr Doubling time = 104 hr

Nude mouse morphology Tumor growth in nude mice pretreated with cyclophosphamide

236

Table 2. (continued) Cell line Prior RX Treatment description

Tumor growth in nude mice pretreated with cyclophosphamide

Lansford et al

Grows as sharply demarcated, compact islands of cells with a distinct epithelial morphology, well differentiated, and with numerous keratinized epithelial pearls. Supernatant factor induces activation, promotes proliferation, and increases antitumor cytotoxicity of natural killer cells and CD4+ T lymphocytes Continued on next page

Table 2. (continued) Prior RX Treatment description

Original pathology

UT-SCC-13 AMC-HN-1

RT none

Laryngeal papilloma prior to cancer

AMC-HN-2

S/RT/CX

AMC-HN-3

none

AMC-HN-4

S/RT/CX

AMC-HN-5

S/RT

75 Gy 5 months

In vitro morphology

Nude mouse morphology

Epithelioid to spindle-shaped cells, relatively little cell-to-cell contact, grows mostly as independent cells until quite confluent, easily detached from flask bottom, tendency to form cell balls when confluent Epithelioid to spindle-shaped cells, relatively little cell-to-cell contact, grows mostly as independent cells until quite confluent, easily detached from flask bottom, tendency to form cell balls when confluent Epithelioid cells that grow in islands with extensive cell-to-cell contact. Grow in monolayers Epithelioid cells that grow in islands with extensive cell-to-cell contact. Grow in monolayers Epithelioid to spindle-shaped cells, relatively little cell-to-cell contact, grows mostly as independent cells until quite confluent, easily detached from flask bottom, tendency to form cell balls when confluent

Recreates histology of original tumor in nude mouse

Head and Neck Cancers

Cell line

Recreates histology of original tumor in nude mouse

Recreates histology of original tumor in nude mouse, includes keratin pearls Recreates histology of original tumor in nude mouse Recreates histology of original tumor in nude mouse

237 Continued on next page

238

Table 2. (continued) Cell line Prior RX Treatment description AMC-HN-6

none

AMC-HN-7

S/RT

AMC-HN-8

SET

AMC-HN-9

none

UD-SCC-1

Original pathology

In vitro morphology

Nude mouse morphology

Continued on next page

Lansford et al

Epithelioid cells that grow in Recreates histology of islands with extensive cell-to-cell original tumor in nude mouse. Includes well formed contact with closely packed infiltrating cords with a cells. Has the capacity to prominent stromal network stratify into thick layers of differentiated cells Epithelioid cells that grow in Recreates histology of islands with extensive cell-to-cell original tumor in nude contact. Grow in monolayers mouse Epithelioid cells that grow in islands with extensive cell-to-cell contact. Grow in monolayers Consists mostly of spindle-shaped Recreates undifferentiated carcinoma histology of cells which do not form islands original tumor in nude mouse even when confluent. Cells are easily detached from the flask Failure to produce tumors Nonstratifying, adherent monolayer cells, sharply demarcated in after xenotransplantation into compact islands. Moderate to nude mice in repeated assays well differentiated SCC histology. Tightly packed cuboidal cell colonies, high N:C ratio, prominent nucleoli

Prior RX Treatment description

Original pathology

Nonstratifying, adherent monolayer cells, sharply demarcated in compact islands. Moderate to well differentiated SCC histology. Small colonies with an elongated spread-out appearance. Loss of cell-to-cell adhesion with individual migrating single cells Nonstratifying, adherent monolayer cells, sharply demarcated in compact islands. Moderate to well differentiated SCC histology. Cuboidal cells in small islands resembling a cobblestone relief Nonstratifying, adherent monolayer cells, sharply demarcated in compact islands. Moderate to well differentiated SCC histology. Large islands of cuboidal cells with occasionally spreading cells at the edge of the islands

UD-SCC-2

UD-SCC-3

S/ND/RT

UD-SCC-4

NPC/HK1

XRT

In vitro morphology

>72 passages. Doubling time 28 hrs. Polygonal cells grow in monolayer in a mosaic pattern with squamous differentiation

Slowly growing tumor in nude mice at 6 wks post sub-renal capsule implant. Solid tumor, frequent mitoses, neovascularization and invasion into normal tissues. Histological appearance generally similar to original biopsy specimen Sub-renal capsule injection into nude mice revealed tumor by subrenal capsule assay only

Slowly growing tumor in nude mice at 6 wks post sub-renal capsule implant. Solid tumor, frequent mitoses, neovascularization and invasion into normal tissues. Histological appearance generally similar to original biopsy specimen Nude mouse xenograft produced a solid 1 cc tumor histologically similar to the biopsy specimen Continued on next page

239

6000 rads to nasopharynx Hong Kong native with total response for 17.5 years. Recurrence noted 1 month prior to bx

Nude mouse morphology

Head and Neck Cancers

Table 2. (continued) Cell line

Cell line

Prior RX Treatment description

Original pathology

NPC-KT

none

Japanese woman with a 2 month >36 passages. Cells grow in history of left neck mass, which monolayer and are larger than the extended from the left nasopharynx Ad-AH cells used to create the into the left nasal septum. EBNA hybrid touch smear (+). Pt. serology: antiVCA/IgA 1:320 (+), and /IgG 1:2560 (+), EA/IgG 1:320, EA/IgA 1:80

c15

none

Moroccan girl with locally advanced No in vitro line tumor and early metastatic spread. Pt. serology: anti-VCA/IgA 1:20, and /IgG 1:2560, IgG EA 1:640, IgA EA 1:10

C17

XRT, CTX

No in vitro line Biopsy taken with bone marrow, liver, and skin mets present 4 years after Dx in this Frenchman. Pt. serology: anti-VCA/IgA 1:40, and /IgG 1:1280, IgG EA 1:160, IgA EA 1:10

Nude mouse morphology Inoculation into nude mice irradiated (5 Gy) prior to implant, drinking water with 0.5 nM estrone. Tumor 1-2 cm3 after 5-7 weeks. NPC cells with no infiltrating mouse cells. No intercellular bridges or keratin. Weak EBNA expression Inoculation into previously irradiated (5 Gy) nude mice, drinking water supplemented with 0.5 nM estrone from inoculation time. 1–2cc tumors recovered 5-7 weeks with loss of non-malignant lymphocytes and homogeneous large syncytial cells with clear nuclei, EBNA+ + Inoculation into previously irradiated (5 Gy) nude mice drinking water supplemented with 0.5 nM estrone from inoculation time. 1-2cc tumors recovered 5-7 weeks with elimination of fibroblasts. No mouse cell infiltration, EBNA+ Continued on next page

Lansford et al

Primary XRT to head and neck followed by bone and skin metastatic relapse treated with bleomycin, cis-platinum 5-FU

In vitro morphology

240

Table 2. (continued)

Cell line

Prior RX Treatment description

C18

CTX

CG1

none

CNE1

none

Chinese patient

CNE2 HNE- 1

none none

Chinese patient

NM 8 HNE-3 HONE-I

none

Original pathology

In vitro morphology

No in vitro line 2mos of bleomycin, cis- Locally advanced cancer with cervical nodal involvement with platinum, 5-FU extra-capsular spread in this Algerian. Pt. serology: anti-VCA/IgA 1:160, and /IgG 1:640, IgG EA 1:320, IgA EA 1:160

>200 generations. Doubling time 20 hrs

Nude mouse morphology Inoculation into previously irradiated (5 Gy) nude mice, drinking water supplemented with 0.5 nM estrone from inoculation time. 1–2cc tumors recovered 5-7 weeks with no infiltrating mouse stromal cells. Weak EBNA Nude mouse xenograft produced a solid tumor mass >1 cc Nude mouse xenograft produced relatively well differentiated squamous pearls and epithelial cell junctions

> 100 passages. Doubling time 45 hrs

Uncloned cell line produced poorly differentiated SCC tumors in 3/3 nude mice

> 90 passages. Doubling time 64 hrs

Uncloned cell line produced poorly differentiated SCC tumors in 6/10 nude mice

241

Continued on next page

Head and Neck Cancers

Table 2. (continued)

none

NPC-TW01N1

none

NPC-TW02

none

NPC-TW03

none

NPC-TW04

none

In vitro morphology

Nude mouse morphology

>100 passages. Doubling time Nude mouse xenograft 10.5 hrs. Spindle morphology with produced a large multilobulated solid tumor mass. bipolar and tripolar processes This mass was moderately undifferentiated SCC with minimal keratinization. Distant metastases to lung, diaphragm, and liver were undifferentiated These cells differ from NPC-TW01 by their multiple nucleoli > 100 passages. Doubling time Nude mouse xenograft 10.8 hrs. Spindle morphology with produced two solid tumor masses with distant metastasis. bipolar and tripolar processes The mass was undifferentiated, in contrast to the primary tumor Nude mouse xenograft 4 month history of palpable mass >100 passages. Bi- or tripolar produced a WHO type IIA spindle cells at low confluence with bony destruction before excision. Large vesicular nuclei with becoming polygonal at confluence solid tumor mass with tumor eosinophilic, prominent nucleoli and emboli indistinct plasma membrane with heavy lymphocytic infiltration. Pt. serology: anti-EBNA (+), antiVCA/IgA 1:20 (+) 3 month history of neck mass and > 100 passages. Bi- or tripolar Nude mouse xenograft spindle cells at low confluence produced a WHO type IIA bloody rhinorrhea. Mild lymphocytic infiltration. Pt serology: anti- becoming polygonal at confluence solid tumor mass with tumor emboli EBNA (+), anti-VCA/IgA 1:10 (+), and /IgG 1:640 (+) Continued on next page

Lansford et al

NPC-TW01

Original pathology

242

Table 2. (continued) Cell line Prior RX Treatment description

NPC-TW05

none

NPC-TW06

none

NPC-TW07

none

NPC-TW08

none

NPC-TW09

none

Original pathology

In vitro morphology

2 year history of AU stiffness, tinnitus, L headache and 1 year history of bilateral neck masses. Pt. serology: anti-EBNA (+), antiVCA/IgA 1:160 (+), and /IgG 1:1280 (+) 3 year history of intermittent epistaxis. Mild lymphocytic infiltration. Pt. serology: anti-EBNA (t) and anti-VCA/IgA (-), and /IgG 1:320 (+) 4 month history of R tinnitus, exophthalmos, ptosis. Some cells showed spindle cell transformation. Less lymphocytic infiltration 1 month history of neck mass and hoarseness. Pt. serology: anti-EBNA (t), anti-VCA/IgA 1:10 (+), and /IgG 1:230 (+)

Nude mouse xenograft > 100 passages. Bi- or tripolar spindle cells at low confluence produced a WHO type I solid becoming polygonal at confluence tumor mass with marked keratin pearl formation

Nude mouse morphology

Nude mouse xenograft > 100 passages. Bi- or tripolar spindle cells at low confluence produced a WHO type IIA becoming polygonal at confluence solid tumor mass with tumor emboli

Head and Neck Cancer

Table 2. (continued) Cell line Prior RX Treatment description

> 100 passages. Bi- or tripolar Nude mouse xenograft produced a WHO type IIA spindle cells at low confluence becoming polygonal at confluence solid tumor mass

Nude mouse xenograft > 100 passages. Bi- or tripolar spindle cells at low confluence produced a WHO type I becoming polygonal at confluence solid tumor mass with marked keratin pearl formation and tumor emboli Nude mouse xenograft 2 month history of neck mass. > 100 passages. Bi- or tripolar Mild lymphocytic infiltration. Pt. spindle cells at low confluence produced a WHO type IIA serology: anti-EBNA (+), antibecoming polygonal at confluence solid tumor mass with tumor emboli early antigen/IgA 1:10 (-), and /IgG 1:10 (t)

243

multiple lines available

UM-SCC-1 UM-SCC-2 UM-SCC-3 UM-SCC-4 UM-SCC-5 UM-SCC-7 UM-SCC-8 UM-SCC-9 UM-SCC-10A

yes

UM-SCC-10B UM-SCC-11A

yes yes

UM-SCC-11B

yes

UM-SCC-14A

yes

UM-SCC-14B

yes

UM-SCC-14C

yes

Genetics

HPV subtypes: 6 (-), 16 (-), 18 (-), 31 (-), Wt p53 present. HPV subtypes: 6 (-), 16 (-), 18. HPV subtypes: 6 (-), 11 (-), 16 (-), 18 (-), 31 (-). HPV subtypes: 6 (-), 16 (-), 18 (-). HPV subtypes: 6 (-), 16 (-), 18 (-). HPV subtypes: 6 (-), 16 (-), 18 (-). HPV subtypes: 6 (-), 16 (-), 18 (-), 31 (-), Hypotetraploid. 3p loss. HPV subtypes: 6 (-), 16 (-), 18 (-). HPV subtypes: 6 (-), 16 (-), 18 (-). No wt p53 present. p53 mutation: GGC->TGC (Gly->Cys) in codon 245. Hypotetraploid. 18q loss: monosomy. No 3p loss. DCC: homozygous. Karyotyped. No wt p53 present. p53 mutation: GGC->TGC (Gly->Qs) in codon 245. HPV subtypes: 6(-), 11 (-), 16 (-), 18 (-). Hypotetraploid. 18q loss: qll.1-qter. No 3p loss. Karyotyped. No Wt p53 present. p53 mutation: TGC->TCC (Cys->Ser) in codon 242. HPV subtypes: 6(-), 16 (-), 18 (-), 31 (-). Hyperdiploid. 18q loss: monosomy. No 3p loss. No Wt p53 present. p53 mutation: TGC–>TCC (Cys–>Ser) in codon 242. Karyotyped. Hypotetraploid. 18q loss: q11.2-q22. DCC homozygous. No 3p loss. No Wt p53 present. p53 mutation: AGA –> AGT (Arg –> Ser) in codon 280 and a 30 bp deletion in exon 8, codons 277-287. Karyotyped. Hypotetraploid. 18q loss: q11.2-q22. DCC: homozygous. 3p loss: p26-pter. No Wt p53 present. p53 mutation: AGA –> AGT (Arg –> Ser) in codon 280. Karyotyped. 18q loss: q11.2-q22.3p loss: p14-pter. No Wt p53 present. p53 mutation: AGA –> AGT (Arg –> Ser) in codon 280. Karyotyped. 18q loss: q11.2-q22. Karyotyped. No Wt p53 present. p53 mutation: CGG–>CTG (Arg->Leu) in codon 248. HPV subtypes: 6 (-), 11 (-), 16 (-), 18 (-), 31 (-), PCR with consensus HPV primer (-). Hypotetraploid. 18q loss: 2-18s/4. 3p loss: p13-pter. Karyotyped. Continued on next page

Lansford et al

UM-SCC-15 UM-SCC-16

244

Table 3 Genetic changes and other known molecular characteristics of head and neck squamous cancer cell lines line name

multiple lines available

Genetics

UM-SCC-17A

yes

UM-SCC-17B UM-SCC-19

yes

HPV subtypes: 6 (–), 11 (–), 16 (–), 18 (–), 31 (–). Hyperdiploid. No 18q loss. DCC: homozygous. Only Wt p53 present. Karyotyped. HPV subtypes: 6 (–), 16 (–), 18 (–), 31 (–). Hyperdiploid. 18q loss, q21.1-q23. No 3p loss. Karyotyped. No wt p53 present. p53 mutation: 10 base pair deletion (frame shift) at codons 148-151. HPV subtypes: 6 (–), 11 (–), 16 (–), 18 (–), 31 (–), PCR with consensus HPV primer (+). HPV subtypes: 6 (–), 11 (–), 16 (–), 18 (–), 31 (–). PCR with consensus HPV primer (–). Near diploid. 18q loss: monosomy. 3p loss: p13-p22. Karyotyped. No 18q loss. No DCC loss. No 3p loss. Karyotyped. Near diploid. No 18q loss. DCC: homozygous. 3p lost. Karyotyped. Near diploid. No 18q loss. 3p lost. No Wt p53 present. p53 mutation: TAT -> TGT (Tyr -> Cys) in codon 220. Karyotyped. HPV subtypes: 6 (–), 16 (–), 18 (–), 31 (+). Wt p53 present. p53 mutation: TGC->TTC (Cys->Phe) in codon 176. 18q loss: q11.2-q23. Karyotyped. HPV subtypes: 6 (–), 11 (–), 16 (–), 18 (–), 31 (–). HPV 16 present, 6 (–), 11 (–), 18 (), 31 (–). HPV subtypes: 6 (–), 16 (–), 18 (–), 31 (–). Hypertriploid/hypodiploid. DNA index 1.64. 18q loss: q11.1-qter. DCC. homozygous. 3p lost. Karyotyped. HPV subtypes: 6 (–), 11 (–), 16 (–), 18 (–), 31 (–). Wt p53 present. p53 mutation: TGC->TTC(Cys->Phe). HPV subtypes: 6 (–), 11 (–), 16 (–), 18 (+), 31 (+), PCR with consensus HPV primer (t). HPV subtypes: 6 (–), 11 (–), 16 (-), 18 (–), 31 (–), PCR with consensus HPV primer (–). 18q loss: q11.2-q22. Karyotyped. 18q loss: q22-qter. Karyotyped. LOH in 18q21.1, no loss in q11.1 (tumor specimen shows corresponding LOH in q21.1). Hypertetraploid. 18p loss: p11.3-pter. No 3p loss. Karyotyped.

UM-SCC-21A UM-SCC-21B UM-SCC-22A UM-SCC-22B UM-SCC-23

yes yes

UM-SCC-33 UM-SCC-47 UM-SCC-38 UM-SCC-49 UM-SCC-63 UM-SCC-69 UM-SCC-80 UM-SCC-81B UM-SCC-82A

yes

245

Continued on next page

Head and Neck Cancer

Table 3 (continued) line name

Genetics

UM-SCC-83A UM-SCC-83B UM-SCC-86 UM-SCC-87 UM-SCC-89 UM-SCC-90 UM-SCC-91 UM-SCC-93 UM-SCC-94 UM-SCC-101A UM-SCC-101B SCC-12B.2 SCC-25 SCC-35 SCC-61 JSQ-3 SQ-9G SQ-20B SQ-31 SQ-38 HN-SCC-135 HN-SCC-15 1 HN-SCC-167 HN-SCC-294 MDA-183

yes yes

No gross 18q loss, smaller regions of loss noted on extensive evaluation. No loss in 18q11.1. LOH 18q12.1-q23. No 18q loss in cell line or tumor. LOH in 18q11.1, q12.2-12.3, q23 (tumor showed AI/LOH for these markers). Tumor and line show no loss in 18q11.1, q12.2-12.3, q23. Line has LOH in 18q21.1, q23. Tumor is LOH/AI for these markers. Tumor and line show no loss at 18q23, MSI at 18q11.1. Line shows LOH at 18q11.1, q21.1, q23. Tumor shows AI/LOH at these markers. Tumor and line show no loss at 18q11.1, 12.2-12.3, q23. LOH 18q11.1-18q23. No loss 18q. DNA index 1.88. Diploid. DNA index 1.93. 72 chromosomes. Triploid. 65 chromosomes. Diploid. DNA index 1.27. 46 chromosomes. Diploid. DNA index 2.88. 57 chromosomes. DNA index 1.53. Triploid. DNA index 1.73. 68 chromosomes. Tetraploid. 85 chromosomes. DNA index 2.64. Triploid. Tetraploid. 82 chromosomes. Triploid. 70 chromosomes. Tetraploid. 80 chromosomes. HPV negative. p53 mutations: (1) C–>T (Pro–>Ser) in exon 5, codon 151. (2) mutation in exon 7 by SSCP. Rb negative by Western. Continued on next page

yes yes

Lansford et al

multiple lines available

246

Table 3 (continued) line name

multiple lines available

MDA-1386 MDA-1483

Yes yes yes yes

yes

yes yes

yes yes

HPV negative. p53 mutation: exon 8 mutated by SSCP Rb negative by Western. HPV 18(+). p53 mutations: (1) A–>A+G (Tyr–>Tyr+Cys) in exon 5, codon 126. (2) G–>G+A in intron 5, position 1, maybe causing alternative splicing. Rb negative by Western. HPV 16 (+), 18 (t). p53 wt by SSCP. del(3) (p11), der(9)t(9;11) (p13;q14) del(3) (p11), +6, der(12)t(9;12) (q12;p11) del(3) (p11), +6 +6, der(12) del(3) (p11), +6, der(12), small marker. PCI-4A has 45 chromosomes and PCI-4B has 80. del(3) (p11), +6, small marker del(3) (p11), +6, der(12), small marker del(3) (p11), +6, small marker del(3) (p11), +6, der(9)t(9;11) (p13;q14), small marker del(3) (p11), +6, der(9)t(9;11) (p13;q14) +6, der(9)t(9;11) (p13;q14) del(3) (p11), +6, small marker del(3) (p11), der (9)t(9;11) (p13;q14), small marker del(3) (p11), small marker +6, der(12)t(9;12) (q12;p11), small marker No wt p53 present. p53 mutation: CGA–>TGA (Arg->Stop) in exon 6, codon 196. (t) Bcl–2 expression. No wt p53 present. p53 mutation: CGA–>TGA (Arg->Stop) in exon 6, codon 196. No wt p53 present. p53 mutation: TGT–>TTT (Cys–>Phe) in exon 8, codon 275. No wt p53 present. p53 mutation: 9 base pair deletion in exon 7, codon 248-250. No wt p53 present. p53 mutation: CCC->CAT (Pro->His) in exon 5, codon 151. Wt p53 present. p53 mutation: one allele lost (LOH) (+) Bcl–2 expression. Wt p53 present. p53 mutation: one allele lost (LOH). Continued on next page

247

MDA-1986 PCI-1 PCI-2 PCI-3 PCI-4A PCI-4B PCI-5 PCI-6A PCI-6B PCI-7 PCI-9A PCI-9B PCI-10 PCI-11 PCI-12 PCI-13 UT-SCC-1A UT-SCC-1B UT-SCC-2 UT-SCC-4 UT-SCC-5 UT-SCC-6A UT-SCC-6B

Genetics

Head and Neck Cancer

Table 3 (continued) line name

248

Table 3

(continued)

line name

multiple lines available

UT-SCC-7 UT-SCC-8 UT-SCC-9 UT-SCC-10 UT-SCC-11 UT-SCC-12A UT-SCC-12B UT-SCC-13

yes yes

UT-SCC-14 UT-SCC-15 UT-SCC-16A

yes

UT-SCC-16B

yes

UT-SCC-17 yes yes yes yes

Wt p53 present. p53 mutation: GGA->GAA (Gly–>Glu) in exon 8, codon 266. No wt p53 present. p53 mutation: ATC–>TTC (Ile–>Phe) in exon 7, codon 255. (+) Bcl–2 expression. No p53 (wt or mutant) present. No Bcl–2 expression. No wt p53 present. p53 mutations: CAG->TAG (Gln–>stop) in exon 5, codon 144, and CGA–>TGA (Arg->stop) in exon 8, codon 306. (+) Bcl–2 expression. No wt p53 present. p53 mutations: 30 base pair deletion exon 6, codons 187-197 (in-frame mutation). No wt p53 present. p53 mutation: CGA–>TGA (Arg–>stop) in exon 10, codon 342. No wt p53 present. p53 mutation: CGA–>TGA (Arg–>stop) in exon 10, codon 342. No wt p53 present. p53 mutation: 10 base pair deletion + 1 base pair insertion exon 6, codons 205-208 (deletion & frame shift mutation). Normal wt p53 present. Normal wt p53 present. No wt p53 present. p53 mutations: CGT–>TGT (Arg–>Cys) in exon 4, codon 110, and ATC–>AAC (Ile–>Asn) in exon 7, codon 232. One Bcl–2 allele deletion. No wt p53 present. p53 mutations: CGT–>TGT (Arg–>Cys) in exon 4, codon 110, and ATC–>AAC (Ile–>An) in exon 7, codon 232. No wt p53 present. p53 mutations: CGT–>CTT (Arg->Leu) in exon 4, codon 110, and CTG–>CAG (Leu–>Gin) in exon 7, codon 257. Wt p53 present. p53 mutation: 3 bp insertion (Ile) at exon 7, codons 254-256. (-) Bcl–2 expression. No wt p53 present. p53 mutation: GAG–>AAG (Glu–>Lys) in exon 8, codon 285. (+) Bcl–2 expression. No wt p53 present. p53 mutation: GAG–>AAG (Glu–>Lys) in exon 8, codon 285. No wt p53 present, p53 mutation: CGG–>TCG (Arg–>Trp) in exon 7, codon 248. No wt p53 present, p53 mutation: CGG–>TCG (Arg–>Trp) in exon 7, codon 248. No wt p53 present. p53 mutation: GAG–>AGG (Glu–>Lys) in exon 8, codon 285. Wt p53 present. p53 mutation: TGT–>TTT (Cys–>Phe) in exon 7, codon 238. Continued on next page

Lanford et al

UT-SCC-18 UT-SCC-19A UT-SCC-19B UT-SCC-20A UT-SCC-20B UT-SCC-21 UT-SCC-22

Genetics

line name

UT-SCC-23 UT-SCC-24A UT-SCC-24B UT-SCC-25 UT-SCC-26A UT-SCC-26B UT-SCC-27 UT-SCC-28 UT-SCC-29 UT-SCC-30 UT-SCC-31 UT-SCC-32 UT-SCC-33 UT-SCC-34 UT-SCC-35 UT-SCC-36 UT-SCC-39 UT-SCC-40 EV-SCC-1 EV-SCC-2 EV-SCC-3 EV-SCC-4 EV-SCC-7 EV-SCC-10M EV-SCC-14M

multiple lines available yes yes yes yes

Genetics

Normal wt p53 present. Normal wt p53 present. Normal wt p53 present. (+) Bcl–2 expression. No wt p53 present. p53 mutation: CGG–>TGG (Arg–>Trp) in exon 7, codon 248. No wt p53 present. p53 mutation: TAC–>TAA (Tyr–>stop) in exon 7, codon 236. No wt p53 present. p53 mutation: TAC–>TAA (Tyr–>stop) in exon 7, codon 236. Wt p53 present. p53 mutation: TGC->TTC (Cys–>Phe) in exon 7, codon 242. No wt p53 present. p53 mutation: CGT–>TGT (Arg–>Cys) in exon 8, codon 273. No wt p53 present. p53 mutation: CAG->TAG (Gln->stop) in exon 4, codon 104. One Bcl–2 allele deletion. No wt p53 present. p53 mutation: CGG–>CCG (Arg->Pro) in exon 8, codon 282. No wt p53 present. p53 mutation: CAA–>TAA (Gln->stop) in exon 4, codon 52. No wt p53 present. p53 mutation: GGA->GAA (Gly–>Glu) in exon 8, codon 266. No wt p53 present. p53 mutation: CGG–>TGG (Arg–>Trp) in exon 8, codon 282. Normal wt p53 present. No wt p53 present. p53 mutation: CGT–>TGT (Arg–>Cys) in exon 7, codon 245. No wt p53 present. p53 mutation: GGC–>AGC (Gly–>Ser) in exon 7, codon 244. No p53 mutation detected. No wt p53 present. p53 mutation: 30 base pair deletion in exon 8, codons 277-287. No wt p53 present. p53 mutation; CGA–>TGA (Arg->stop) in exon 6, codon 213. p53 wt present. p53 mutation: CGG–>CTG (Arg->Leu) in exon 7, codon 248. p53 mutation: 2 bp (TT) addition in exon 8, codon 289-290. p53 mutation in exon 6 (by SSCP). p53 mutation in exon 6 (by SSCP). p53 mutation in exon 5 (by SSCP).

249

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Head and Neck Cancer

Table 3 (continued)

250

Table 3 (continued) line name

Genetics

p53 mutation in exon 8 (by SSCP). p53 mutation in exon 8 (by SSCP). p53 mutation in exon 5,6 (by SSCP). p53 mutation in exon 5,6 (by SSCP). p53 mutation in exon 8 (by SSCP). 18p loss: p11.1-pter. Karyotyped. 18q loss: q11.2-qter. Karyotyped. 18p loss: p11.1-q11.2, q22-qter. Karyotyped. No 18q loss. Karyotyped. No 18q loss. 18q loss: q11.2-pter. Karyotyped. 18q loss: q11.2-pter. DCC not tested. Karyotyped. No 18q loss. Karyotyped. No DCC loss. No 18q loss. Karyotyped. No 18q loss. Karyotyped. No 18q loss. Karyotyped. 18q loss: 2-18s/4. Karyotyped. 18q loss: q11.2-qter. Karyotyped. No 18q loss. Karyotyped. Hyperdiploid. DNA index 2.41. Diploid. DNA index 1.37. Diploid. DNA index 1.45. Hyperdiploid. DNA index 1.6. Hyperdiploid. DNA index 2.13. Continued on next page

Lansford et al

EV-SCC-17P EV-SCC-18 EV-SCC-19P EV-SCC-19M EV-SCC-17M HFH-SCC-3 HFH-SCC-4 HFH-SCC-6 HFH-SCC-8 HFH-SCC-11 HFH-SCC-12 HFH-SCC-15 HFH-SCC-16 HFH-SCC-17 HFH-SCC-19 HFH-SCC-20 HFH-SCC-28 HFH-SCC-29 HFH-SCC-33 HFH-SCC-42 AMC-HN-1 AMC-HN-2 AMC-HN-3 AMC-HN-4 AMC-HN-5

multiple lines available

line name

AMC-HN-6 AMC-HN-7 AMC-HN-8 UD-SCC-1 UD-SCC-2 UD-SCC-3 UD-SCC-4 UD-SCC-5 UD-SCC-6 TU-138 TU-159 TU-167 TU-177 TU-182 Tu-212 TU-686 (MDA?) Tu-158 (LN) TU-212 (LN) NPC/HK1 NPC-KT C15 C17 C18 2117 CG1

multiple lines available

Genetics

Diploid. DNA index 1.38. Diploid. DNA index 1.52. Hyperdiploid. DNA index 1.98. p53 mutation: Exon 3 deleted (codons 25-32). Stop amino acid 43/44; Wt p53 present. Karyotyped. Hypotriploid aberrant. Only Wt p53 present. p53 LOH. Karyotyped. No Wt p53 present. p53 mutation: Glu (GAG) –> STOP (TAG) in codon 224. Karyotyped. No Wt p53 present. p53 mutation: Deletion of 13 nucleotides in codons 150-154. Stop at 169/170. No Wt p53 present. p53 mutation: Codon 179 His (CAT) –> Tyr (TAT). No Wt p53 present. p53 mutation: Codon 220 Tyr (CAT) –> Cys (TGT). p53 mutation: C–>T (Pro–>Ser) in exon 5, codon 151. Rb negative by Western. Rb negative by Western. p53 mutation: G–>A in intron 1, position 1, causing alternative splicing. Rb positive by Western. p53 mutation: C–>T (Pro–>Ser) in exon 5, codon 151. Rb negative by Western. p53 mutation: C–>T (Pro–>Ser) in exon 5, codon 151. Rb negative by Western. p53 mutation: C–>T (Pro–>Ser) in exon 5, codon 151. Rb negative by Western. p53 mutation: C–>T (Pro–>Ser) in exon 5, codon 151. Rb negative by Western. p53 mutation: C–>T (Pro–>Ser) in exon 5, codon 151. Rb negative by Western. EBV (-). Numerical and structural abnormalities on chromosome analysis. EBNA positivity stable at 94-987% from passage 4 to 36. EBV (+), 30 copies. No EA, VCA, or MA complexes or EBV particles detected (non-lytic). No mouse chromosomes. EBV (+), 12 copies. No EA, VCA, or MA complexes or EBV particles detected (non-lytic). No mouse chromosomes. EBV (+), 3 copies. No EA, VCA, or MA complexes or EBV particles detected (non-lytic). No mouse chromosomes. EBV (+). EBV (+). Karyotyped.

251

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Head and Neck Cancers

Table 3 (continued)

line name

CNE1 CNE2 HNE-1 NM 8 HONE-I NPC-TW01 NPC-TW02 NPC-TW03 NPC-TW04 NPC-TW05 NPC-TW06 NPC-TW07

NPC-TW09

Genetics

EBV (-). EBV (-). EBV (+). EBV lost after passage 42. Karyotyped. EBV (+). EBV (+). EBV lost after passage 42. EBV (+) by PCR in earlier passages and (-) in later passages, HPV-16 E2 and E6 (+) by PCR in earlier passages and (-) in later passages, HCMV (+) in both earlier and later passages, adenovirus (-). No specific c-fgr, c-fos, or v-sis expression. Karyotyped. EBV and HPV-16 E6 by PCR in both earlier passages and later passages, HPV-16 E2 (+) in earlier but (-) in later passages, HCMV (+) by PCR in both earlier and later passages, adenovirus (-). No specific c-fgr, c-fos, or v-sis expression. EBV and HPV-16 E2 & E6, and HCMV (+) by PCR in earlier passages, but EBV and HPV-16 E2 and E6 became (-) while HCMV remained (+) by PCR in later passages. Karyotyped. Multiple chromosome abnormalities. EBV, HPV-16 E2 & E6, and HCMV (-) by PCR in both earlier and later passages. Karyotyped. Multiple chromosome abnormalities. EBV (+) by PCR and in-situ hybridization, HPV-16 E2 (+), HPV-16 (-), and HCMV (+) by PCR in early passages. Later passages were EBV (-), HPV-16 E2 & E6 (-), and HCMV (+) by PCR. Karyotyped. Multiple chromosome abnormalities. EBV (+) by PCR and in-situ hybridization, HPV-16 E2 (+), HPV-16 (-), and HCMV (+) by PCR in early passages. Later passages were EBV (-), HPV-16 E2 (+),HPV-16 E6 (-), and HCMV (+) by PCR. Karyotyped. Multiple chromosome abnormalities. EBV (+) by PCR and in-situ hybridization, HPV-16 E2 (+), HPV-16 E6 (-), and HCMV (+) by PCR in early passages. Later passages were EBV (-), HPV-16 E2 (+), HPV-16 E6 (-), and HCMV (+) by PCR. Karyotyped. Multiple chromosome abnormalities. EBV (+), HPV-16 E2 (+), HPV-16 E6 (-), and HCMV (+) by PCR in early passages. Later passages were EBV (-), HPV-16 E2 (t), HPV-16 E6 (-), and HCMV (-) by PCR. Karyotyped. Multiple chromosome abnormalities. EBV (-) by PCR, HPV-16 E2 & E6 (+), and HCMV (-) by PCR in early and later passages. Karyotyped. Multiple chromosome abnormalities.

Lansford et al

NPC-TW08

multiple lines available

252

Table 3 (continued)

Head and Neck Cancers

253

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Chapter 29 Gastric Cancer

Toshimitsu Suzuki and Morimasa Sekiguchi Department of Pathology, School of Medicine, Fukushima Medical University, 1 Hikarigaoka, Fukushima City, 960-1295 Japan and Department of Surgery, Saitama Medical School, 38 Morohongo, Moroyama-machi, Iruma-gun, Saitama, 350-0451 Japan. Fax: 0081-24-5487151; E-mail: [email protected]

1.

INTRODUCTION

The first gastric cancer cell line, CaVe, was described in 1963 by Dobrynin. Several cell lines (Sugano et al. 1968) were described in the 1960s, but most of them are no longer available. Since then, more than 70 cell lines derived from gastric cancer have been described (Table 1), with about three-quarters derived by Japanese researchers. In Japan, gastric cancer is one of the most frequent cancers in both sexes and accounts for 20 to 30% of all cancer incidence (Tominaga 1992), although its incidence in Japan has been dropping steadily since 1960. Despite the high incidence of gastric carcinoma in China, South America and Eastern Europe, few of the established cell lines are from these areas (see Table 1). The most widely used cell lines are the MKN series (MKN-1, MKN-7, MKN-28, MKN-45 and MKN-74), KATO-III and TMK-1. These cell lines were derived from various histological types of gastric cancer, including intestinal, diffuse or signet-ring cell carcinoma. In the field of molecular genetics, MKN7 and KATO-III have a special position, because the erbB-2 and K-sam oncogenes were cloned from them (Fukushige et al. 1986, Hattori et al. 1990).

2.

CULTURE METHODS

Primary cultures of human stomach cancer are easy to establish in conventional serum-containing commercial culture media. Initial growth can be

J.R.W Masters and B. Palsson (eds.), Human Cell Culture Vol. II, 257-291. © 1999 Kluwer Academic Publishers. Printed in Great Britain.

Name

Patient Patient age sex/race T

AGS

nd

nd

AZ-521 nd

N

M

B

Primary site

Specimen Culture medium site

Primary Culture Authentimethod cation Availability reference ATCC

nd

JCRB

ECC-10 73

m/J

1

+

1

RPMI1640+20% FCS D

K,M

RCB

ECC-12 63

m/J

3

-

1

RPMI1640 + 20% FCS D

K,M

RCB

GCIY

39

f/J

nd nd 1

EMEM +15% FCS

P

K,M

RCB

GK

nd

nd

nd nd nd nd stomach

liver met

DaigoT+5%FCS

nd

nd

GS

nd

nd

nd nd nd nd stomach

liver met

DaigoT+5%FCS

nd

nd

GT3TKB 53

m/J

nd nd nd nd stomach

ascites

DMEM + 10% FCS

nd

K,M

RCB

HC-154 nd

nd

nd nd nd nd stomach

primary

K,M

author

HGC-27 nd

nd

nd

+

RPMI-1640 + 10% FCS D on McCoy + 10% FCS agar nodalmet Ham’s F12+20% FCS D

K,M

author

HGT-1 60

m/M

3

nd 0

HLN- 60 GAC-5 HNGA 36

m/J

nd +

f/J

nd nd nd nd cardia

nd

1

nd body

liver met (autopsy) B-2 cardia skin met (biopsy) B-4 stomach ascites

nd stomach

B-3 postwall, primary body

K,M

B-3 fundus

M

DMEM+10% FCS, E in DMEM + 20% FCS + agar 10% tryptose phosphate broth nodalmet RPMI1640 + 20% FCS E

ascites

nd

S

K,M

author

Cancer Res43: 1983 1703-1709,1983 Br J Cancer 59: 1989 761-765,1989 Niigata Igakkai Zasshi 1988 106: 21-36,1992 Niigata Igakkai Zasshi 1989 106: 21-36,1992 Human Cell 2 (Suppl) 1989 89-90,1989 Proc Jpn Cancer Assoc 1991 50: 173, 1991 Proc Jpn Cancer Assoc 1991 50: 173, 1991 RCB General Catalog 1994 3,1997 Proc Jpn Cancer Assoc 1986 45: 241, 1986

SC Barranco K Imanishi N Ishihara N Ishihara M Nozue Y Imai Y Imai T Todoroki M Usugane

1974

T Akagi

1982

CL Laboisse

Proc Jpn Cancer Assoc 1988 47: 294,1988 Human Cell 2: 335, 1989 1989

S Morikawa

Acta Med Okayama 30: 215-217,1976 Cancer Res 42: 1541-1548,1982

I Ishiwata

Continued on next page

Suzuki and Sekiguchi

K,M

nd

primary Ham’s F10 + 20% FCS E (biopsy) nd nd nd nd stomach nd nd MEM + 10% FCS

nd nd nd nd stomach

Establish- First ment author

258

Table 1 List of gastric cancer cell lines and availability

Name

Patient Patient age sex/race T

N

M

B

Primary site

Specimen Culture medium site

Primary Culture Authentimethod cation Availability reference

Establish- First ment author

HOGT 5mos

m/J

nd nd nd nd stomach

primary

Ham's F12 + 20% FCS

D

K,M

HPEGAC-T HPEGAC-2 HPEGAC-3 HPEGAC-4 HS-746

53

f/J

nd nd nd nd stomach

ascites

RPMI1640 + 20% FCS

P

M

S Morikawa

74

m/J

nd nd nd nd stomach

ascites

RPMI1640 + 20% FCS

P

M

S Morikawa

39

m/J

nd nd nd B-3 body

ascites

RPMI1640 + 20% FCS

P

M

S Morikawa

69

f/J

nd nd nd nd stomach

ascites

RPMI1640 +20% FCS P

M

S Morikawa

74

m/C

nd nd 1

nd

K,M

ATCC

HSC-39 54

m/J

nd nd nd B-4 stomach

K,M

author

HSC-41 45

m/J

nd nd nd nd stomach

nd

author

Cancer Res 53: 5815-5821,1993

1993

K Yanagihara

HSC-42 nd

nd

nd nd nd nd stomach

nd

author

Cancer Res53: 5815-5821,1993

1993

K Yanagihara

HSC-43 56

m/J

nd nd nd B-4 stomach

K,M

author

Int J Cancer 54: 200–207,1993

1992

K Yanagihara

HSC-45 28

f/J

nd nd nd nd stomach

nd

author

Cancer Res 53: 5815-5821,1993

1993

K Yanagihara

HuG-1

nd

nd nd nd nd stomach

DMEM/aMEM (1:1)+ P 10% FCS + 5% horse serum, aMEM + 10% FCS DMEM/aMEM(1:1) E primary + 10% FCS, DMEM + 10% FCS E xenograft DMEM/aMEM (1:1) + 10% FCS DMEM + 10%FCS primary DMEM +3% FCS, E (biopsy) DMEM/Ham's F12 (1:1) + 0.05% BSA fraction DMEM/aMEM (1:1)+ P ascites 10% FCS, DMEM + 10% FCS nd nd nd

nd

JCRB/RCB Proc Jpn Cancer Assoc 1988 47: 396,1988

nd

nd stomach

musclemet DMEM+10% FCS ascites

Exp Pathol 27: 1983 143-151,1985 1976 Cancer 50: 1775-1782,1982 Cancer 50: 1976 1775-1782,1982 Cancer 50: 1976 1775-1782,1982 Proc Jpn Cancer Assoc 1979 45: 198,1986 JNatl Cancer Inst 62: 1979 225-230,1979 1990 Cancer Res 51: 381-386,1991

I Ishiwata S Kanazawa

Gastric Cancer

(Continued)

Table 1

S Kanazawa SKanazawa M Taniguchi HS Smith K Yanagihara

H Imanishi

259

Continued on next page

(Continued) Primary Culture Authentimethod cation Availability reference

Patient Patient age sex/race T

ISLS

69

m/J

nd + nd B-3 stomach

K,M

Ist-1

63

m/J

nd 1

K,M

IT-25

31

m/J

2

JR-St

35

f/J

nd nd nd B-4 stomach

KATO-III 55

m/J

KE-39

77

m/J

KE-97

52

m/J

KKLS

58

m/J

nd nd nd nd stomach pleural recurrent effusion nd nd nd B-3 lesser curv.primary body 4 2 1 B-3 lesser curv.peritoneal body deposit nd + 1 B-1 stomach nodalmet

KMK-2

58

f/J

nd nd + B-4 stomach

KS-1

55

f/nd

nd nd 1

KWS

42

m/J

MAIV

36

m/J

4

nd 1

MKK-1

56

m/J

3

2

MKN-1

72

m/J

nd + nd B-2 body

N M B

2

Primary site

Specimen Culture medium site

nodalmet AIM-V + 20% FCS, D RPMI-1640 + 15% FCS 1 nd stomach liver met S-clone SF-B+ 10% E bovine albumin 0 nd stomach xenograft MEM + 10% FCS E MEM + 10% FCS

P

K,M

P RPMI-1640/EMEM (1:1) + 20% FCS RPMI-1640 + 10% FCS D

K,M K,M

RPMI-1640 + 10% FCS E

K,M

RPMI-1640 + 15% FCS D

K,M

ascites

Ham’s F12 + 20% FCS, S EMEM + 10% FCS nd stomach Krukenberg Ham’s F12 + 10% FCS E tumor

nd nd nd nd stomach

1

CSF

M

B-4 stomach

ascites

pleural effusion B-3 antrum primary

nd Ham’s F10 +20% FCS E

M K,M SK K,M

RPMI-1640+20% FCS E

K,M

nodalmet RPMI-1640 + 20% FCS E

K,M

Establish- First author ment

Human Cell 4 (Suppl) 1991 51,1991 author Jpn J Cancer Res 82 1991 883485,1991 T Iwamura Proc Jpn Cancer Assoc 1986 45: 241,1986 IBL/author Gastroent Jpn 26: 1989 7-13,1991 ATCC/JCRB/Jpn J Exp Med 48: 1974 IBL/HSRRB 61–48,1978 RCB Human Cell 7: 1994 227-232,1994 RCB Nisshoshi 92 19-25, 1991 1995 M Mai Human Cell 2 (Suppl) 1989 87–88,1989 JNCI 64: 1015-1024, 1979 1980 Eur J Cancer Clin 1988 Oncol 24: 1397-1408, 1988 Human Cell 2:331, 1984 1989 Nichiidaishi 52: 1985 125126,1985 Nisshoshi 89: 1991 2645-2654,1992 RCB/IBL Niigata Igakkai Zasshi 1977 91: 737-752,1977

C-D Huang M Terashima K Ite A Terano M Sekiguchi H Uesugi H Uesugi K Sawaguchi H Nomura R Whelan M Sekiguchi K Kuki AIhara H Hojo

Continued on next page

Suzuki and Sekiguchi

Name

260

Table 1

(Continued)

Name

Patient Patient age sex/race T

MKN-7

39

N M B

Primary site

Specimen Culture medium site

Culture AuthentiPrimary method cation Availability reference

m/J

nd + nd B-2 antrum

nodal met RPMI-1640 + 20% FCS E

K,M

MKN-28 70

f/J

nd + nd nd stomach

nodal met RPMI-1640 +20% FCS E

K,M

MKN-45 62

f/J

nd nd 1

nd stomach

liver met

RPMI-1640 +20% FCS E

K,M

MKN-74 37

m/J

nd nd 1

nd stomach

liver met

RPMI-1640 +20% FCS E

K,M

MKO

nd

nd nd nd nd stomach

xenograft

RPMI-1640 + 10% FCS E

K,M

MUSG-1 61

m/J

4

nd nd B-3 antrum

ascites

RPMI-1640 + 20% FCS P

K,M

Mz-Sto-1 54

m/C

ascites

mind

P ascites fluid + CMRL (1:1) + 15% FCS RPMI-1640 + 10% FCS E

K,M

NCI-N87 nd

nd nd nd nd residual stomach nd nd 1 nd stomach

K,M

NKPS

44

f/J

nd nd nd nd stomach

RPMI-1640 + 20% FCS S

K,M

NTAS

78

f/J

pleural effusion nd nd nd B-4 stomach ascites

K,M

NU-GC-2 56

f/J

nd + nd nd stomach

AIM-+20% FCS, P RPMI-1640 + 15% FCS nodal met RPMI-1640+20% FCS E

K,M

NU-GC-3 72

m/J

nd nd 1

nd stomach

muscle met RPMI-1640+20% FCS E

K,M

NU-GC-4 35

f/J

nd + nd nd stomach

nodal met RPMI-1640 +20% FCS E

K,M

OCUM-1 38

f/J

nd nd nd B-4 stomach

pleural effusion

nd

liver

DMEM+10%FCS

P

K,M

Establish- First author ment

RCB/IBL/ Niigata Igakkai Zasshi 1977 HSRRB 91: 137–152,1977 RCB/JCRB/ Niigata Igakkai Zasshi 1977 IBL 91: 737–752,1917 RCB/IBL/HS Niigata Igakkai Zasshi 1977 RRB, DSMZ 91: 737-752,1977 TSuzuki/ Acta Pathol Jpn 36: 1977 IBL/HSRRB 65-, 1986 Proc Jpn Cancer Assoc 1986 45: 240, 1986 St Marianna Ikadaigaku 1984 Zasshi 14: 459–470, 1986 1987 Eur J Cancer Clin Oncol 23: 697-706,1987 ATCC/KCLB Cancer Res 50: 1977 2773-2780,1990 Proc Jpn Cancer Assoc nd 49: 220,1990 Proc Jpn Cancer Assoc 1991 50,113,1991 1983 JCRB Jpn J Surg 18: 438–446,1988 1984 JCRB Jpn J Surg 18: 438–446,1988 1984 author Jpn J Surg 18: 438–446,1988 K Hirakawa Nihon Gekagakkaishi 1988 92 1451–1460,1991

H Hojo H Hojo

Gastric Cancer

Table 1

H Hojo T Motoyama M Usugane T Shimomura WG Dippold J-G Park Y Deguchi K Sawaguchi SAkiyama SAkiyama SAkiyama TKubo

261

Continued on next page

Name

(Continued) Patient Patient age sex/race T

Primary site

Specimen Culture site medium

Culture AuthentiPrimary method cation Availability reference

primary

E

K,M

pleural RPMI-1640+ 20% FCS P effusion nd nd nd nd stomach peritoneal RPMI-1640+20% FCS E deposit

K,M

N M B

f/J

nd nd nd B-4 nd

m/J

nd nd nd nd stomach

SCH

46

m/J

SGC-7901 56

f/Ch

nd t nd

SH101

nd

nd nd nd nd stomach

SK-GT-1 63

m/C

4

1

0

SK-GT-2 72

m/H

4

1

SK-GT-3 69

m/C

4

SK-GT-4 89

m/C

2

SK-GT-5 67

m/C

SNU-1

44

SNU-5

nd

DMEM + 10% FCS

lesser curv. nodal met RPMI-1640 + 40% FCS E ascites

RPMI-1640 + 10% FCS nd

K,M K,M nd

EMEM + 20% FCS

E

K,M

0

nd proximal primary stomach nd fundus primary

EMEM + 20% FCS

E

K,M

2

1

nd fundus

primary

EMEM+20%FCS

E

K,M

1

0

EMEM+20%FCS

E

K,M

EMEM + 20% FCS

E

K,M

m/K

nd Barrett primary epithelium 2 2 0 nd EC primary junction nd nd nd nd stomach primary

RPMI-1640+ 10% FCS E

K,M

33

f/K

nd nd nd nd stomach

ascites

RPMI-1640+ 10% FCS P

K,M

SNU-16 33

f/K

nd nd nd nd stomach

ascites

RPMI-1640+ 10% FCS P

K,M

K Hirakawa Nisshoshi 92: 1995 199-205,1995 1986 JCRB/IBL Acta Pathol Jpn 36: 65-83,1986 JCRB Culture of Human 1972 Cancer Cells, Asakura, Tokyo, 192-202,1975 Chin Med J 97: 1983 831-834,1984 author Int J Cancer 53: 1993 1013-1016,1993 Cancer 72: 649-657, 1988 1993 Cancer 72 649–657, 1989 1993 Cancer 72 649-657, 1989 1993 Cancer 72 649457, 1989 1993 1989 Cancer 72 649–657 1993 ATCCKCLB Cancer Res 50: 1985 2773-2780,1990 ATCCKCLB Cancer Res 50: 1987 2773-2780,1990 ATCCKCLB Cancer Res 50: 1987 2773-2780,1990

M Yashiro T Motoyama S Oboshi C-H Lin M Nishiyama M Altorki N Altorki N Altorki N Altorki N Altorki J-G Park J-G Park J-G Park

Continued on next page

Suzuki and Sekiguchi

OCUM- 49 2M Okajima 38

Establish- First author ment

262

Table 1

(Continued)

Name

Patient Patient age sex/race T

N M B

St 2474

60

2

St 2957

51

m/G

2

2

0

St 3051

66

m/G

4

2

0

m/G

1

0

Primary site

nd stomach

Specimen Culture site medium

Culture AuthentiPrimary method cation Availability reference

nodal met RPMI-1640 + 10% FCS D

K,M

DSMZ/ author

nd stomach

nodal met RPMI-1640+10%FCS D

K,M

DSMZ/ author

nd stomach

primary

RPMI-1640 + 10% FCS D

K,M

DSMZ/ author

RPMI-41640+10%FCS D

K,M

DSMZ/ author

K

JCRB/ author/ S Yanoma JCRB/IBL

St 23132 72

m/G

2

nd stomach

primary

STKM-1 41

f/J

nd + nd B-4 stomach

pleural effusion

TAKIGA 63 WA 72 TE-7

m/J

nd nd nd B-2 stomach

nodal met DM-170 + 20% FCS

E

K,M

m/J

nd nd nd nd cardia

primary

D

K,M

TGBC11T 72 KB TMK-1 21

f/J

nd nd nd nd stomach

nodalmet DMEM + 5% FCS

nd

K,M

m/J

nd nd nd nd body

xenograft

TSG-6

f/J

4

nodal met RPMI-1640+ 20% FCS D

m/J

nd nd nd B-2 stomach

57

no name- 65 1

0

0

nd 1

B-4 stomach

primary

RPMI-1640+ 10% FCS P

nd

RPMI-1640 +10% FCS Ein M soft agar

6052 t 1% dialyzed bovine serum t EGF t ITS

D

RCB E Tahara

K,M

T Suzuki

K,M

author

Establish- First ment author

Virchows Archiv B 1991 Cell Pathol 63: 335-343, 1993 1991 VirchowsArchivB Cell Pathol 63: 335-343, 1993 1991 VirchowsArchivB Cell Pathol 63: 335-343, 1993 1988 VirchowsArchivB Cell Pathol 63: 335-343, 1993 Human Cell 4: 67-70, 1991 1991 J Gastroenterol 30: 1984 589-598,1995 Human Cell 2 (Suppl) 1983 330,1989 RGB General Catalog 1997 3, 1997 1985 Jpn J Cancer Res (Gann) 76: 1064-1071, 1985 Jpn J Surg 24: 420–428,1990 1994 Proc Jpn Cancer Assoc 1989 50: 173,1991

HPVollmers HPVollmers

Gastirc Cancer

Table 1

HPVollmers HP Vollmers A Arimura M Sekiguchi T Akaishi B Kim A Ochiai K Aizawa T Kawaguchi

263

Continued on next page

(Continued)

Name

Patient Patient Primary Specimen Culture medium age sex/race T N M B site site

noname- nd 2

nd

nd nd nd B-4 stomach xenograft DMEM+5% FCS

Primary CultureAuthentimethod cation Availability reference nd

M

Establish- First ment author

Proc Jpn Cancer Assoc 1990 49:220,1990

264

Table 1

Y Imai

Suzuki and Sekiguchi

Abbreviations: nd: not described; B: macroscopic classification of gastric carcinoma, modified, based on Borrmann’s subtyping; Type 1: polyploid, 2: ulcerative, non-infiltrating; 3: ulcerative, infiltrative; 4: diffuse, infiltrative. Culture method: D: dispersed; E: explant; P: cell pellet; S: suspension. Authentication: K: karyotypic analysis; M: morphological analysis. Race: C: Caucasian: Ch: Chinese; G: German; H Hispanic; J: Japanese; K Korean; M: Moroccan. CSF: cerebrospinal fluid List of correspondence for availability ATCC. Fax: 1-703-365-2701. Toll free in the USA & Canada: 1-800-638-6597. Outside the USA: 1-703-365-2700. DSMZ (German Collection for Microorganisms and Cell Lines). Mascheroder Weg lb, 38124 Braunschweig, Germany. Fax: +49-531-2616-150, HSRRB, commercial. (Health Science Research Resources Bank). 1-1-43 Hoenzaka, Chuo-ku, Osaka, 540-0006, Japan. Fax: +81-6-945-2872. IBL (Immunobiological Laboratories), commercial. 1091-1 Naka, Fujioka City, Gunma, 375-0005, Japan. Tel: +81-274-22-2888. Fax: +81-274-23-5746. JCRB (Japanese Cancer Research Resources Bank-Cell). 10-35 Kamiosaki 2-chome, Shinagawa-ku, Tokyo, 141-0021, Japan. KCLB (Korean Cell Line Bank). Cancer Research Institute, Seoul National University College of Medicine. 28 Yongon-dong, Chongno-gu, Seoul, 11-0744, Korea. Tel: +82-2-742-0020. Fax: +82-2-742-0021. RCB (RIKEN Cell Bank). 3-1-1 Koyadai, Tsukuba Science City, Ibaraki, 305-0074, Japan. Tel: +81-298-363611. Fax: +81-298-369130. T Akagi, Professor. Second Department of Pathology, Okayama University, Medical School. 1-5-2 Shikada-chou, Okayama City, Okayama, 700-0914, Japan. Tel: +81-861-23-7151. Fax: +81-862-21-4743. S. Akiyama. Second Department of Surgery, Nagoya University, School of Medicine. 65 Tsurumai-chou, Showa-ku, Nagoya City, Aichi, 466-0065, Japan. Tel: +81-52-741-2111. A Arimura. First Department of Internal Medicine. Yokohama Minami Kyo-sai Hospital. 500 Mutsuura-cho, Kanagawa-ku, Yokohama-City, Kanagawa, 2360032, Japan. Tel: +81-45-782-2101. Fax: +81-45-701-9159. W Dippold, Professor. Johaness Gutenberg-Universitat Mainz, Verfugungsgebaude fur Forschung und Entwicklung, Obere Zahlbacher Str. 63-6500 Mainz, Postfach 3980, Germany. Tel: t49-6131-173300. Fax: t 49-6131-173364. K Hirakawa. First Department of Surgery, Osaka City University Medical School, 1-4-54 Asahi-machi, Abeno-ku, Osaka City, Osaka, 545-0051, Japan. Tel: +816-645-2121. Fax: 81-6-646-6450. T Iwamura. First Department of Surgery, Miyazaki Medical College, 5-200 Ooaza-kihara, Kiyotake-chou, Miyazaki-gun, Miyazaki, 889-1601, Japan. Tel: +81985-85-1510. Continued on next page

(Continued)

M Mai, Professor. Department of Surgery, Cancer Research Institute, Kanazawa University, 13-1 Takara-machi, Kanazawa City, Ishikawa, 920-0934. Tel: +8176-265-2799. S Morikawa, Professor. Department of Pathology, Shimane Medical University, 1-89 Ennya-chou, Izumo City, Shimane, 693-0021, Japan. Tel: +81-853-23-2111. e-mail: [email protected]. M Nishiyama, Professor. Research Institute for Radiation Biology and Medicine, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima, 734-0037, Japan. Tel: +81-82-257-5555. Fax: +81-82-256-7105. e-mail: [email protected]. T Suzuki, Professor. Department of Pathology, Fukushima Medical University, School of Medicine, 1 Hikariga-oka, Fukushima City, Fukushima, 960-1295, Japan. Tel: +81-24-548-2111. Fax: +81-24-548-7151. E-mail: [email protected]. E Tahara, Professor. First Department of Pathology, Hiroshima University, School of Medicine, 1-2-3, Kasumi, Minami-ku, Hiroshima City, Hiroshima, 7340037, Japan. Tel: +81-82-257-5555. Fax: +81-82-257-5149. e-mail: [email protected]. A Terano, Professor. Second Department of Medicine, Dokkyo University, School of Medicine, 880 Ooaza-kitakobayashi, Mibu-chou, Shimotsuga-gun, Tochigi, 321-0207, Japan. Tel: +81-282-86-1111, ext 2728. Fax: +81-282-86-6481. M Terashima. First Department of Surgery, Iwate Medical University, School of Medicine, 19-1 Uchimaru, Morioka City, Iwate, 020-0023, Japan. Tel: +81-19651-5111. Fax: +81-19-651-7166. e-mail: [email protected]. M Usugane. Molecular Genetics, Department of Medical Genetics, Biomedical Education and Research Center, Osaka University Faculty of Medicine, 2-2 Yamada-oka, Suita City, Osaka, 565-0871, Japan. Tel: +81-6-879-5111. HP Vollmers, Professor. Institut fiir Pathologie Universitat Wurzburg, Josef-Schneider-Str. 2,97080 Wurzburg, Germany. Tel: +49-931-201-3898. Fax: +49-931201-3440. e-mail: [email protected]. K Yanagihara. National Cancer Institute, 5-1-1 Tsukiji, Chuou-ku, Tokyo, 104-0045, Japan. Tel: +81-3-3542-2511. Fax: +81-3-3542-2548. e-mail: [email protected] K Yanoma. Kanagawa Cancer Center Clinical Research Institute, 54-2 Nakao-chou, Asahi-ku, Yokohama City, Kanagawa, 241-0815, Japan. Tel: +81-45-3915761 - ext 318. Fax: +81-45-366-3157.

Gastric Cancer

Table 1

265

In vitro features of cell line in comparison to original tumor

Description of tumor pathology

AGS

Adherent, piling up in large colonies. Focally moderately differentiated with recognizable gland formation to poorly differentiated with sheets, clusters, and cords of malignant cells, transmural extension into the pancreas. Mucin production; slight. Well differentiated adenocarcinoma in the Partly floating, partly adherent, with small cell mucosa and small cell endocrine cell aggregates. Neurosecretory granules; positive. carcinoma in the submucosa including foci of squamous cell carcinoma in the latter. Neurosecretory granules; positive. Adherent, not monolayered, cell aggregates with Small cell carcinoma (endocrine cell piling up. Neurosecretory granules: positive. carcinoma) with pseudorosettes. Neurosecretory granules: positive. Poorly differentiated adenocarcinoma, Adherent, monolayer of polygonal cells with piling up. scirrhous, with mucin production. Gastric carcinoma with liver metastasis nd and high serum AFP. Gastric carcinoma with liver metastasis nd and high serum AFP. Adenocarcinoma mucocellulare scirrhosum. Epithelial-like Poorly differentiated adenocarcinoma. Adherent, cell clusters with dispersed growth. Well-differentiated tubular adenocarcinoma Adherent, monolayer, polygonal epithelioid cells. in the mucosa and undifferentiated carcinoma in other areas: nodal metastasis; undifferentiated carcinoma. Ulcerating, infiltrating tumor with serosal Adherent, epithelial-like morphology. involvement, poorly differentiated adenocarcinoma without mucus production.

EC-10(1)

ECC-12 GCIY GK GS GT3TKB HC-154 HGC-27

HGT-1

Xenograft pathology Solid nests of oval cells with areas of necrosis. Some cells had PAS-stained dense cytoplasmic mucin droplets. No gland formation and no Alcian blue-stained mucin. Endocrine cell carcinoma alone. Neurosecretory granules: positive

Endocrine cell carcinoma similar to that of primary tumor. Neurosecretory granules: positive. Poorly differentiated adenocarcinoma with weak positivity of PAS or Alcian blue staining. Take in nm. Take in nm. Take in nm. Take in nm. nd

Solid tumor with same morphology as that of the initial tumor but occasional tubular structures. Continued on next page

Suzuki and Sekiguchi

Name

266

Table 2 Comparison of cell lines with in vivo histology, in vitro growth pattern, and related xenograft morphology

Name

Description of tumor pathology

In vitro features of cell line in comparison to original tumor

Xenograft pathology

HLN-GAC-5

Continued on next page

267

Adenocarcinoma, poorly differentiated with Adherent, spindle-shaped cells. Take in nm. liver and nodal metastasis. Benign tridennal teratoma. HOGT Benign gastric tridermal teratoma. Fibroblast-like cells. Floating, PAS-positive signet-ring cells in early Not taken in nm. HPE-GAC-T(2) Poorly differentiated adenocarcinoma, peritonitis carcinomatosa. stage. HPE-GAC-2(3) Adenocarcinoma, partly poorly Not taken in nm. Floating in small cell clusters. differentiated. HPE-GAC-3 Adenocarcinoma, peritonitis carcinomatosa. Adherent, partly floating. Not taken in nm. HPE-GAC-4 Adenocarcinoma, peritonitis carcinomatosa. Adherent, epithelial but not monolayered, and Not taken in nm. floating with growth. Carcinoma. Very abnormal. Carcinoma. HS-746 HSC-39 Signet-ring cell carcinoma and peritonitis Floating, round cells with loose cell aggregates; Poorly differentiated adenocarcinoma including signet-ring cells with medullary carcinomatosa. PAS-positive. growth; PAS-positive. HSC-41 Moderately differentiated tubular Undifferentiated carcinoma composed of solid Multilayered sheets with clusters upon adenocarcinoma. masses of tumor cells. confluence. Undifferentiated carcinoma composed of solid Well-differentiated tubular adenocarcinoma, Multilayered sheets with clusters upon HSC-42 serially transplanted in athymic mice. mass of tumor cells. confluence. HSC-43 Scirrhous gastric carcinoma. Adherent, piling up and multilayered, cuboidal Poorly differentiated carcinoma, expansive and round cells; PAS and Alcian blue-positive. growth. Multilayered sheets with clusters upon Signet-ring cell carcinoma. Signet-ring cell carcinoma. HSC-45 confluence. 1st-1 Adherent, epithelial-like morphology. nd Moderately differentiated tubular adenocarcinoma and mucin granules in cytoplasm with liver metastasis and paragastric lymph node metastasis. High serum AFP. Signet-ring cell carcinoma; PAS-positive. Adherent, monolayered, mainly polygonal and nd JR-St some round floating cells; PAS-positive. Floating, free round cells and adherent few cells. Not taken in nm. KATO-III Signet-ring cell carcinoma.

Gastric Cancer

Table 2 (Continued)

Name

Description of tumor pathology

KE-39

Poorly differentiated adenocarcinoma.

KE-97

Mucinous carcinoma with component of poorly differentiated adenocarcinoma and signet-ring cell carcinoma. Poorly differentiated adenocarcinoma with multinucleated or bizarre giant cells, medullary growth. PAS-negative. Poorly differentiated adenocarcinoma.

KKLS KMK-2 KS-1 KWS MAIV MKK- 1 MKN-1

MKN-28 MKN-45

In vitro features of cell line in comparison to original tumor

Xenograft pathology

Adherent, epithelial growth as small cell nests that coalesce in time. Adherent, round cells with multi-nucleated giant cells and mucin-containing cells.

Poorly differentiated adenocarcinoma with medullary growth. Poorly differentiated adenocarcinoma with medullary growth.

Adherent monolayer of polygonal cells with piling up or giant cells.

Poorly differentiated adenocarcinoma with medullary growth.

nd. Almost adherent and monolayered with cell aggregates on the monolayer. Poorly differentiated adenocarcinoma with Floating, round cells, numerous loosely packed nd. signet-ring cell component aggregates of variable size. Partly adherent, various sued polygonal cells Poorly differentiated adenocarcinoma. Take in nm. and partly floating, round cells. Signet-ring cell carcinoma, superficial nd. Floating, round cells with clusters, partly adherent. spreading type, scirrhous. Poorly differentiated adenocarcinoma with Adherent, round cells, not-pavement-like Poorly differentiated adenocarcinoma with duodenal invasion. arrangement. PAS and Alcian blue positive. central necrosis. Squamous cell carcinoma with component of Adenosquamous carcinoma; adenocarcinoma Adherent, epithelial-like and partly floating, round cells. poorly differentiated carcinoma. element alone in nodal metastasis for culture. Well-differentiated adenocarcinoma with Adherent, epithelial monolayer, with occasional Not taken in nm. multinucleated giant cells. weak positivity for Alcian blue staining. Well differentiated adenocarcinoma in Adherent, epithelial-like monolayer with piling Well differentiated adenocarcinoma with focal poorly differentiated carcinoma; PAS and/or biopsy specimen and PAS and Alcian blue- up; PAS and/or Alcian blue-positive. Alcian blue-positive. positive in nodal metastasis. Poorly differentiated adenocarcinoma. PASPoorly differentiated adenocarcinoma with Adherent but not sheet-like, piling up and irregular growth pattern; PAS-positive, Alcian positive, Alcian blue-negative. medullary growth and liver metastasis. blue-negative. PAS-positive; Alcian blue-negative. Continued on next page

Suzuki and Sekiguchi

MKN-7

268

Table 2 (Continued)

In vitro features of cell line in comparison to original tumor

Name

Description of tumor pathology

MKO

Poorly differentiated carcinoma.

MUSG-1

Poorly differentiated adenocarcinoma in biopsy specimen and peritoneal deposit. Moderately well-differentiated adenocarcinoma with islets of signet-ring cells; PAS-positive. Well differentiated adenocarcinoma. Adherent, monolayer, epithelial-like, Poorly differentiated adenocarcinoma, Adherent, monolayer, pavement-like. scirrhous. Poorly differentiated adenocarcinoma, Floating, single or small cell clusters; PAS scirrhous. positive. Poorly differentiated adenocarcinoma with Epithelial, polygonal cells with monolayer sheet; PAS-positive, Alcian blue-negative. paragastric nodal metastasis. Poorly differentiated adenocarcinoma, Epithelial, polygonal cells with monolayer sheet; PAS-positive, Alcian blue-negative. metastasis in brachial muscle. Poorly differentiated adenocarcinoma with Adherent, round cells, partly as free floating cells; PAS, Alcian blue-negative. areas of signet-ring cell carcinoma, and paragastric nodal metastasis. Poorly differentiated adenocarcinoma with Floating, round and signet-ring like, partly loosely attached; PAS and Alcian blue-positive. signet-ring cell carcinoma, biopsy. Floating, round or paired cells. Scirrhous gastric cancer.

MZ-Sto-1 NCI-N87 NKPS NTPS NU-GC-2 NU-GC-3 NU-GC-4 OCUM-1 OCUM-2M Okajima SCH(4)

Adherent cell clusters with dispersed growth from the clusters. Mainly adherent, round cells, partly floating from piling-up. Adherent in small islands, epithelial cell-type.

Poorly differentiated adenocarcinoma. Floating with singles or cell aggregates. Primary choriocarcinoma of male stomach, Adherent, monolayer, numerous piling-ups, polygonal and multinucleated giant cells, HCGfocal adenocarcinoma element, autopsy, high urine HCG. producing.

Xenograft pathology Poorly differentiated carcinoma. Poorly differentiated adenocarcinoma weakly positive for PAS, negative for Alcian blue. nd.

Gastric Cancer

Table 2 (Continued)

Well differentiated adenocarcinoma. Carcinoma, CA19-9 and CEA-positive. nd. Not taken in athymic nude mouse even by treatment with anti-asialo GM1 antibody. Poorly differentiated adenocarcinoma. Poorly differentiated adenocarcinoma. Poorly differentiated adenocarcinoma, medullary growth. Poorly differentiated adenocarcinoma with poor fibrosis. Poorly differentiated carcinoma. Choriocarcinoma with HCG-production.

269

Continued on next page

Name

Description of tumor pathology

SGC-7901

Invasive carcinomatous growth along the stomach lesser curvature with nodal and peritoneal involvement; nodal metastasis, adenocarcinoma, PAS-positive, Alcian bluenegative. Well-differentiated tubular adenocarcinoma. Moderately differentiated adenocarcinoma.

SH-101(5) SK-GT-1 SK-GT-2 SK-GT-3 SK-GT-4 SK-GT-5 SNU-1 SNU-5 SNU-16

In vitro features of cell line in comparison to original tumor

Xenograft pathology

Epithelial-like, pavement-like monolayer; PASpositive, Alcian blue negative.

Poorly differentiated carcinoma with PASpositivity and Alcian blue-negativity.

Monolayer or multilayer. Adherent, epithelial as sheets of cells, mainly polygonal but pleomorphic including spindleshaped cells. Adherent, epithelial as small cell nests.

Undifferentiated carcinoma. Histologically similar to the inoculated tumor.

Adherent, epithelial, large fusiform cells with large spindle-shaped nuclei. Adherent, small epithelial cell nests that enlarge and coalesce in time. Adherent, epithelial as sheets of polygonal cells and/or spindle-shaped cells. Poorly differentiated adenocarcinoma. Floating, partly adherent, more round. Poorly differentiated adenocarcinoma. Floating, partly adherent, more round. Poorly differentiated adenocarcinoma. Floating, partly adherent, more round and a small number of goblet cells. Adherent, epithelial-like. Adenocarcinoma, intestinal type. Adherent, epithelial-like. Adenocarcinoma, intestinal type. Adherent, epithelial-like, rather spindle-shaped. Adenocarcinoma, intestinal type. Adherent, epithelial-like. Adenocarcinoma, intestinal type. Poorly differentiated adenocarcinoma partly Adherent, monolayered polygonal cells. signet-ring cell-like.

Histologically similar to the inoculated tumor. Histologically similar to the inoculated tumor. Histologically similar to the inoculated tumor. Histologically similar to the inoculated tumor. Poorly differentiated adenocarcinoma. Not tested. Not tested. Solid tumor. Solid tumor. Solid tumor. Solid tumor. Poorly differentiated adenocarcinoma, PASpositive. Continued on next page

Suzuki and Sekiguchi

St 2474 St 2957 St 3051 St 23132 STKh4-1

Poorly differentiated adenocarcinoma with ulceration. Moderately to poorly differentiated mucin producing adenocarcinoma. Well-differentiated adenocarcinoma arising in Barrett epithelium of the distal esophagus. Poorly differentiated adenocarcinoma.

270

Table 2 (Continued)

Gastric Cancer

Table 2 (Continued) In vitro features of cell line in comparison to original tumor

Name

Description of tumor pathology

TAKIGAWA

Moderately differentiated adenocarcinoma, high serum AFP.

Adherent, cell-islands, without piling-up.

TMK-1

Poorly differentiated adenocarcinoma.

TSG

Loosely adherent, oval or cuboidal-shaped, and loose clusters with piling up, PAS-positive, keratin and vimentin-positive. Floating, round, single cells, PAS-positive.

Signet-ring cell carcinoma, diffusely infiltrative growth pattern. Signet-ring cell carcinoma with diffusely Floating, round, including signet-ring cells; infiltrative growth and peritoneal PAS-positive. dissemination. Poorly differentiated adenocarcinoma, high Loosely, adherent, epithelial-like serum AFP. , Floating Signet-ring cell carcinoma

TSG-6 No name-1 No name-2

Xenograft pathology Papillary adenocarcinoma and squamous cell carcinoma; transplantable in nm by co-innoculation of the cells with polystyrene plate. nd nd nd nd Similar histology to the primary tumor.

The text presented in this table is mostly from the original literature as cited in Table 1, a different origin of data is indicated in the text. Superscript numbers: (1) = Fukuda et al. 1988; (2) = Kubota et al. 1988; (3) = Kotou et al. 1991; (4) Kameya et al, 1975; (5) = Yanagihara et al. 1993a. Abbreviations: AFP: alphafetoprotein; CEA carcinoembryonic antigen; HCG; human chorionic gonadotropin; nm: nude mouse; nd: not described; PAS: periodic acid Schiff reaction.

271

MCNo Marker Chr ras c-myc erbB-2 K-sam c-met p53

GF

GFR

AGS ECC-10(1)

dip1oid hypotetraploid

47 83

nd nd

nd nd nd amp

nd nd

nd nd

nd nd

nd nd

nd GR(2)

ECC-12(1) GCIY

hyperdiploid hypotriploid

54 57

nd none

nd nd

nd nd

nd nd

nd nd

GK GS GT3TKB HC-154 HGC-27 HGT- 1 HLN-GAC-5 HOGT HPE-GAC-T HPE-GAC-2 HPE-GAC-3 HPE-GAC-4 HSC-746 HSC-39(4)

nd nd hyperdiploid hypertetraploid hypertetraploid hypotriploid nd diploid nd nd nd nd hyperdiploid hypotriploid

nd nd 50 97 109-110 57 nd 46 nd nd nd nd nd 66

nd nd nd nd nd +marl-17 nd none nd nd nd nd nd +marl-4

nd nd nd nd nd nd nd nd nd nd nd nd nd nd

nd nd nd nd nd nd nd nd nd nd nd nd nd nd

HSC-43(4)

pseudotetraploid 88

nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nd nl amp na (Ha, N,K) nd na na

HSC-41(7) HSC-42(7) HSC-45(7) HUG-1 Ist-1

nd nd nd nd hypertriploid

nd nd nd nd 71-77

+marl-3 nd nd nd nd some

nd nd nd nd nd

amp nd

nd nd nd nd nd

nd nd nd nd nd

nd nd nd nd nd nd

nd nd nd nd nd nd

nd nd

Tumor marker

Others

nd ten clones of AGS serotonin (initial CK-BB stage), NSE nd nd nd serotonin,NSE AAAD,CK-BB,NPY,PYY nd nd nd CA19-9,CA-125 +12, +18,-5,-7,-9,-17, –15×2 nd nd EGFR AFP growth enhancement by EGF growth inhibition by EGF nd nd EGFR nd nd nd nd target of CTL(3) CEA LDH nd nd nd nd nd nd nd AT, LAP, LDH nd nd nd nd histamine H2R nd nd nd CEA CK & VM positive nd nd nd AFP/CEA:nl nd nd EGFR CEA nd nd EGFR CEA nd nd EGFR CEA nd nd EGFR CEA nd nd nd nd mut(5) gastrinnd CA19-9, CA125, numerous DMs. nl in L-myc, CEA, SLX, TPA erbA, abl, mos, myb, src. apoptosis by TGF b1, cripto(6) nd TGFa EGFR CA125, CEA, TPA nl in myb, src, abl, mos, erbA. apoptosis by TGF b1 nd nd nd TPA nd nd nd TPA nd nd nd CA19-9,CEA,TPA nd nd nd CA19-9,CEA,TPA PLAP nd nd nd AFP,CA19-9, CEA, TPA Continued on next page

Suzuki and Sekiguchi

Ploidy

272

Table 3 Ploidy, chromosome numbers, important genetic findings, tumor markers, growth factors, growth factor receptors and other characteristics of cell lines. Name

Ploidy

MC No Marker Chr ras c-myc erbB-2 K-sam c-met p53

JR-St hyperdiploid KATO-III hypotetraploid

54 88

none none

KE-39 KE-97

hypotriploid near diploid

62 47

KKLS KMK-2 KS-1 KWS MAIV MKK-1

hypotetraploid nd hypotriploid hypodiploid near diploid triploid

84 nd 60–65 43 48 69

MKN-1

hypodiploid

39

MKN-7 near tetraploid

88-91

GF

nd nd nd nd amp(8) amp(9) del(10) PDGFA (complete)mRNA(11) TGFamRNA(12)

+marl-20 nd nd nd nd nd

nd nd

nd nd

nd nd

nd nd

present nd nd nd nd several nd nd nd nd +marl-5 nd or +marl-4

nd nd nd nd nd nd

nd nd nd nd nd nd

nd nd nd nd nd nd

nd nd nd nd nd nd

none

two

nd nd nd nd nd nd

nd nd

nd nd

protein(24)nd

amp(27) nd protein(24)

na(9)

na(9)

mut(5,10)

mut(5)

Tumor marker

Others

nd CA19-9, CEA, TPA procollagen III 17PLOH; 18, XY, +7A, +2B, EGFR CEA(14) +16C, +4D, +8E, +2F, +2G; mRNA(12) TNFaR(13) APC:del(15) ERK: amp(16) CycliE amp(17), PP60C-SRC(18) TGFb1 activator(19), TGF b1/TGFbR(20), 10q26amp in HSR(21), CCA-1, HLA-DR(22) CA19-9 62,00, +1P, +7q, +11q,–11P nd nd 47, XO, +8, +12. ICAM-1, nd nd CA19-9, CEA AFP:nl nd nd CA19-9, CEA, TPAt(1:17)(p11?:q11?) AFP:nl nd nd a-AMY, LTAP(23) nd nd nd nd 10-30DMs nd nd CEA;nl nd nd CEA nd nd +1, +2, +5, +16, +11×2, CA19-9, CEA +20×2, Robertsonian type translocation in 13 PDGFA EGFR 17pLOH(10), PP6c-src(18), mRNA(11) mRNA(12) TGFbmRNA(20), TGFbIR/ bIIRmRNA(20) Regan isozyme TGFaPDGF-R of HSAP(26), TF(22) rnRNA(12) mRNA(11) HGFR(25) PDGFA EGFR Apc:mut(15), c-jun:amp(28), CyclinE rnRNA(11) mRNA(12) mRNA:amp(17) TGFbmRNA(20), TGFaHGFR(25) Regan isozyme of HSAP(26) mRNA(12)

nd nd

nd nd nd nd

GFR

273

Continued on next page

Gastric Cancer

Table 3 (Continued) Name

Ploidy

MC No Marker Chr ras c-mycerbB-2

K-sam c-met p53

MKN-28 near triploid

59-80

none

nd na

protein nd

MKN-45 near diploid

59-80

none

nd na

nd na(27) protein(24)

MKN-74 hypodiploid

36

nd

nd nd

protein(24)nd

nd none none

NCI-N87 near diploid

43

na

(9)

GF

mut

(5,10)

amp(9) wt(5,10)

na(9)

wt(5,34)

nd nd nd

GFR

PDGFA EGFR mRNA(11) mRNA(12) TGFaHGFR(25) mRNA(12)

bFGF EGFR CEA(30) mRNA(32) mRNA(12) PDGFA IFGI-R(33) mRNA(11) TGFamRNA(24) PDGFA EGFR mRNA(11) mRNA(12) TGFa(12) mRNA nd CEA nd nd nd CEA nd CEA nd

nd nd na(30)

nd nd nd

nd nd nd

nd

nd nd nd nd nl nd (Ha, N, K) nd na

nd

nd

mut(34) nd

nd

VIPR

NKPS

hyperdiploid 52-53

nd

nd nd

nd

nd

amp

nd

nd

nd

NTAS

hypertriploid 71-72

nd

nd nd

nd

nd

amp

nd

nd

nd

none

nd nd

nd

nd

nd

nd

nd

nd

NUGC-2 hypotriploid

62

Tumor marker Others 17pLOH(10), APC:mut(15), CyclinE mRNA arnp(17), PP6c-src(18), CCA- 1, TF, HLA-DR(22), TGFbmRNA(29), TGFb1, bII,b III-R(31), HLA (W6/32)(30), A blood group(30), Lewisa(30) APC:nl(15), CyclinE mRNA amp(17) ERKmRNA:amp(16),PP60c-src(18), TGFbIR, TGFbIIR(20), TF(22), HLA (W6/32)(30), A blood group(30)

APC:n1(15),c-jun:amp(28), PP60c-src(18),TGFbmRNA(29), TGFbIR, TGFbIIR(20), CCA-1, TF, HLA-DR(22) LDH 54, X, -Y, +5A, +5C, -2D, +E nl in erbA,, A2, B, src, raf, myb, sis, rel, fgr, yes, fes, fms, fos, mos, abl; Lewisa, Lewisb CA-19-9, CEA, DMs TAG72 numerous DMs, ERK mRNA: CA19-9 amp(16) CA19-9, CEA, many DMs, almost trisomy TPA CEA +A, +C, +E, +F, -D, -G, -4P, DMs Continued on next page

Suzuki and Sekiguchi

MKO hypertetraploid99 MUSG-1 hyperdiploid 54 Mz-Sto-1 hypertriploid 73

(24)

274

Table 3 (Continued) Name

(Continued)

Name

Ploidy

MC No Marker Chr ras c-myc erbB-2 K-sam c-met p53

GF

GFR

Tumor marker Others

NUGC-3 hypotriploid 58 NU-GC-4 hyperdiploid 52-54

none none

nd nd nd nd

nd nd

nd nd

nd nd

mut(10) wt(10)

nd nd

nd nd

OCUM-1 hyperdiploid 50

+mar

nd nd

nd

nd

nd

nd

nd

EGFR

OCUM- near triploid 70 2M Okajima hypotriploid 62 SCH hypotriploid 60

+ marl~3

nd amp(35) na(35)

nd

amp

nd

nd

EGFR(15)

nd nd

nd nd nd nd

nd nd

nd nd

amp(37) nd nd nd

nd nd

nd nd

SGC7901 hypotriploid 67 SK-GT-1 hyperdiploid 56

nd nd

nd nd nd nd

nd nd

nd nd

nd nd

nd del(34)

CEA, ferritin +A, +C, +E, +F, -5P, 17pLOH CEA, ferritin XX, 53, +2, +4, +8, +11×2, +19, +20 CA19-9,CEA, +1, +7, +8 Span-1 CA19-9, CEA, nl in met-D, met-H, v-erbB, Span-1 TGFbR(36) SLX nd HCG Nagao isozyme of HSAP(26), TGFb(10), TGFbI,II,R(19) + 1, t 14, + 18, t(21q,5p), t(22q,8p) nd nd -11p13-15, actin, TGFb1, b2, b3

SK-GT-2 hyperdiploid 58

nd

nd nd

nd

nd

nd

mut(34)

SK-GT-4 hyperdiploid 59

nd

nd nd

nd

nd

nd

mut(34)

nd nd

nd

nd

nd

mut(34)

SNU-1

near diploid

47

nd

nd na

amp

nd

nd

wt(38)

nd nd PDGFA, nd TGFa PDGFA, nd TGFa aFGF nd bFGF FGF-5 PDGFA PDGFB TGFa PDGFA nd PDGFB TGFa nd VIPR

SNU-5

hypotetraploid 89

nd

nd na

amp

nd

nd

del(38)

nd

SK-GT-5 hypotriploid

63

nd

VIPR

nd

-11p13-15, actin, TGFb1, b2, b3

nd

-11p13-15, actin, TGFb1, b2, b3

nd

Gastric Cancer

Table 3

-11p13-15 actin, TGFb1, b2, b3

CA19-9, CEA, %DMs:28. nl in N-myc, L-myc, c-sis, TAG72 c-myb CA19-9, CEA, %DMs:16. nl in N-myc, L-myc, c-sis, TAG72 c-myb,muscarine/cholinergicR, DDC, 10q26amp in DMs(21)

275

Continued on next page

Name

Ploidy

MC No Marker Chr ras c-myc erbB-2 K-sam c-met p53

SNU-16

tetraploid

92

nd

nd amp amp

St-2474 hyperdiploid St-2957 hyperdiploid St-3051 near diploid St-23132 near diploid STKM-1 hyperdiploid Takigawa hypertriploid

50 51 48 47 52 77

present present present present nd nd

nl nl nl nl nd nd

nd

nd

nd

nd nd

TSG-6 hyperdiploid 50 no name-1 hypertetraploid 96

nd nd

nd nd nd nd amp amp

nd nd

nd nd

nd nd

nd

nd

nd nd

nd

nd

nd

TMK-1

no name-2nd

amp amp amp na nd nd

nd nd nd nd nd nd

nd

nd

mut(4)

nd nd nd nd nd nd

nd nd nd nd nd nd

nd nd nd nd mut(39) nd

protein(23)nd

nd

nd

mut(5,10)

GF nd

GFR

276

Table 3 (Continued) Tumor marker Others

CA19-9, CEA, %DMs:12. %HSR:24 nl in N-myc, TAG72 L-myc, c-sis, c-myb, DDC, 10q2bamp in DMs(21) CA19-9, CEA nl in c-myb, erbB-1, c-sis nd nd CA19-9, CEA nl in c-myb, erbB-1, c-sis nd nd nd nd CA19-9, CEA nl in c-myb, erbB-1, c-sis nd nd CA19-9, CEA nl in c-myb, erbB-1, c-sis nd nd CA19-9 nd nd AFP, CEA, HCG(-), IL-6: low TPA,CA19-9: low PDGFA(11)EGFR(12) nd 17pLOH(10) APC:wt(15), Cyclin PDGFR(11) EmRNA amp(17) ERKmRNA amp(16), TGFbmRNA(31), TGFbIR(31) EGF EGFR(40) nd nd nd AFP (initial nl in hst-1 culture) nd nd CEA, Dupan VIPR

Continued on next page

Suzuki and Sekiguchi

Abbreviations: AAAD: aromatic L-amino-acid decarboxylase; AMY: amylase; AFP: a fetoprotein; amp: amplified; AT adenosine triphosphatase; bFGF basic fibroblast growth factor; CCA-1: coagulant cancer antigen-1; CEA carcinoembryonic antigen; chr: chromosome; CK cytokeratin; CK-BB: creatine kinase of brain isozyme; CT: calcitonin; CTL: cytotoxic T lymphocyte; DDC: L-DOPA decarboxylase; DM: double minute; EGF epidermal growth factor; G: gastrin; GF growth factor; GFR: growth factor receptor; HCG: human chorionic gonadotropin; HSAP: heat stable alkaline phosphatase; HSR: homogeneously staining region; ICAM-1: intercellular adhesion molecule-1; KGF keratinocyte growth factor; LAP: leucine aminopeptidase; LDH: lactic dehydrogenase; LTAP: liver type alkaline phosphatase; McNo: modal chromosome number; mut: mutated; na: not amplified; nl: within normal; NPY: neuropeptide Y; NSE: neuronspecific enolase; PG: prostaglandin; PLAP: placental alkaline phosphatase; PYY: peptide YY, SC secretory component; SLX: sialyl Lewisx; TAG72: tumor associated glycoprotein 72; TF: tissue factor; TGF transforming growth factor; TFA: tissue polypeptide antigen; VIP: vasoactive intestinal peptide; VM: vimentin; wt: wild type

Gastric Cancer

Table 3 (Continued) Subscript numbers are used to indicate source of description of the genetic change or ploidy etc. other than stated by the original report(s). Superscript numbers: 1 = Fujiwara T et al. 1993,2 = Matsushima Y et al. 1994, 3 = Liu SQ et al. 1995,4 = Yanagihara K, Tsumuraya M. 1992.5 = Matter et al. 1992,6 = Kuniyasu H et al. 1991,7 = Yanagihara K et al. 1993a, 8 = Hattori Y et al. 1990,9 = Kuniyasu H et al. 1992; 10 = Motozaki T et al. 1992a, 11 = Tsuda T et al. 1989, 12 = Yoshida K et al. 1990a, 13 = Sugiyama Y et al. 1996, 14 = Sekiguchi M et al. 1983, 15 = Nishimura K et al. 1995, 16 = Kiyokawa E et al. 1979, 17 = Akama Y et al. 1995,18 = Takekura N et al. 1990,19 = Horimoto M et al. 1995,20 = Yamamoto M et al. 1996,21 =Mor et al. 1991,22 = Adachi T et al. 1997,23 = Tokumitsu S et al. 1979,24 = Kameda T et al. 1990,25 = Takeuchi K et al. 1996,26 = Aizawa K, 1988,27 = Fukushiga S et al. 1986,28 = Nagamine K et al. 1996,29 = Yoshida K et al. 1989,30 = Dippold WG et al. 1987,31 = Ito M et al. 1992b, 32 = Tanimoto H et al. 1991,33 = Durrant LG et al. 1991, 34 = Nabeya Y et al. 1995,35 = Yashiro M et al. 1995b, 36 = Inoue T et al. 1997,37 = Faletto L et al. 1992,38 =Kim J-H et al. 1991,39 = Takahashi M et al. 1997,40 = Aizawa K et al. 1994

277

278

Suzuki and Sekiguchi

obtained from about 30% of samples, but only a small fraction of these cultures become continuous cell lines. The main causes for the failure of long term culture are fibroblast overgrowth or failure to passage. However, the cell lines that have been established are generally easy to maintain as monolayers or suspensions in culture. The mean population doubling time of the 44 cell lines for which it is reported is 33.56 ± 11.37 (range 17–66) hrs. MKN-7 has a doubling time of 66 hrs (Hojo 1977) and TAKIGAWA has an exceedingly long population doubling time, about 158hrs (Sekiguchi et al. 1995). The stage of the cancer appears to influence the success of cell line establishment, since about 85% of stomach cancer cell lines are derived from secondary sites, mainly from nodal or liver metastases and cancerous effusions (see Table 1). Rarer sites include cerebrospinal fluid (JR-St, Terano et al. 1991), bone (MATSUURA, Yasumoto et al. 1992) and Krukenberg tumor (KS-1, Whelan et al. 1988). A few lines grew in serum-free culture from the initiation of cultivation; including ISt-1 (Terashima et al. 1991), HSC-43 (Yanagihara et al. 1993b) and no name-1 (Kawaguchi et al. 1991), and it is possible to adapt MKN-28, MKN45 and MKN-74 to serum-free conditions (Suzuki unpublished). A serum-free environment is particularly suitable for investigations on cancer cell products, such as HCG or alkaline phosphatase by SCH (Kameya et al. 1975); serotonin, neutropeptide Y, and peptide YY by ECC-12 (Fujiwara et al. 1993); a-fetoprotein by GK (Imai et al. 1991), ISt-1 (Terashima et al. 1991), and TAKIGAWA (Sekiguchi et al. 1995); a-amylase by KMK-2 (Nomura et al. 1980); and gastrin by HSC-39 (Yanagihara et al. 1991) and MKN45G (Watson et al. 1990). In addition, serum-free culture conditions are useful for analysis of tumor markers, growth factors or cytokines, which are produced in vitro by most of the gastric cancer cell lines (Table 3).

3.

DO THE CELL LINES AVAILABLE REPRESENT THE CLINICAL DISEASE?

In many industrialized nations the incidence of stomach cancer has shown a marked decrease, but this cancer remains the second most common cause of cancer-related deaths worldwide. Among stomach cancers, however, there has been a steady rise in the incidence of adenocarcinoma of the proximal stomach (cardia) and the gastroesophageal junction. In contrast, the incidence of distal (antral) cancers has remained largely unchanged or has decreased slightly (Blot et al. 1991). More men than women are affected. The stage of stomach cancer remains the most important determinant of prognosis (Alexander et al. 1993) and a comprehensive tumor-node-metastasis (TNM) staging system (UICC, 1987) has been used in the USA and Europe. The TNM staging of stomach cancer, however, has not been prevalent in Japan and instead the proposals of the Japanese Research Society for Gastric Cancer (1993) have been adopted.

Gastric Cancer

279

Superficial and surgically curable gastric carcinomas produce few symptoms. Consequently, at the time of presentation, the disease is often locally advanced or metastatic (Alexander et al. 1993), although endoscopic intervention for mucosal or superficial carcinoma is widely and successfully performed. Tumor markers are not useful for the diagnosis of stomach carcinoma at an early stage, but carcinoembryonic antigen (CEA) levels are high in 40 to 50% of patients with metastases, while similar elevations are seen in only 10 to 20% of patients with surgically resectable disease (Posner and Mayer, 1994). In addition, a-fetoprotein (AFP) and CA19-9 levels are elevated in 30% of patients with gastric carcinoma (Posner and Mayer, 1994), often in patients with incurable disease. The characteristics of the stomach cancer cell lines shown in Tables 1–3 indicate that cell lines have been established from both sexes, primary cancers, various metastatic lesions, malignant effusions and more rarely xenografts. Cell lines which produce tumor markers in vitro are common. Among 16 cell lines originating from the primaIy site, there are four cell lines from cardiac lesions, including one cardiac carcinoma (SKGT-1, Altorki et al. 1993), two carcinomas of esophagocardiac junction (SKGT-5, Altorki et al. 1993; TE-7, Akaishi 1989) and one Barrett carcinoma (SKGT-4, Altorki et al. 1993). There is one cell line from antral carcinoma (MKK-1, Ihara, 1992). However, most reports have not described the precise site of the primary from which the cell line was obtained. The cell lines originate from various histological subtypes (Table 2). Histological concordance between cell line xenografts and the primary is rare, and only seen in xenografts of MKN-28 (Hojo, 1977), NCI-N87 (Park et al. 1990) and SKGT-1, -3 and -4. Cell lines derived from T0 or T1 stage carcinoma are lacking. The earliest stage is T2 carcinoma, from which SKGT-4 and -5 and ST23132 (Vollmers et al. 1993) were established. Cell lines from earlier stages are needed, and such cultures might be established, since cell lines have been derived from biopsy specimens of stomach cancer (AGS, Barranco et al. 1983; HSC-43, Yanagihara et al. 1993b). Biopsy specimens of early stage carcinoma would be valuable, although contamination with microorganisms must be overcome for cultivation. Authentication of the cell lines listed in Table 1 is limited to karyotyping and morphological features.

4.

COMPARISON OF CELL LINES WITH THE TISSUE OF ORIGIN

The gastric mucosa in the human is subdivided into pyloric antral, fundic and cardiac mucosa. The surface of the mucosa is lined by superficial mucus cells, together with various specialized cells. The cardiac mucosa harbors cardiac glands, the fundic mucosa contains parietal cells, neck mucus cells and chief cells and the antral mucosa is characterized by pyloric glands. In addition, endocrine cells are scattered throughout the mucosa, most frequently in the

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pyloric mucosa. Amongst the endocrine cells, gastrin-producing cells and somatostatin-producing cells are most abundant. Gastric mucosa is often affected by chronic inflammation and intestinal metaplasia, which is defined as the replacement of antral or fundic gastric mucosa by glands composed of epithelium resembling that of intestine. The metaplasia has been classified into complete (small intestinal) and incomplete (colonic) types (Taglbjaerg and Nielsen 1978). Also, precancerous lesions, chronic atrophic gastritis with or without metaplasia (Morson 1955), intestinal metaplasia, adenoma (Hirota et al. 1984) and hyperplastic polyp (Diabo et al. 1987) are described. Correa et al. (1970) and Correa (1988) proposed the hypothesis of multistage carcinogenesis in the stomach, suggesting that the progression from normal epithelial cells to carcinoma cells involves at least six stages: superficial gastritis, chronic atrophic gastritis, intestinal metaplasia of the complete type followed by incomplete type, gastric adenoma, dysplasia, and carcinoma. More than 90% of stomach cancers are adenocarcinomas, and most of the remainder are non-Hodgkin’s lymphoma or leiomyosarcomas (Rotterdam 1989). Cell lines established from these other gastric tumors are lacking (Sekiguchi and Suzuki 1994). Adenocarcinoma can be subdivided into two categories: an intestinal type characterized by cohesive neoplastic cells forming gland-like tubular structures, and a diffuse type in which cell adhesion is absent, so that individual cells infiltrate and thicken the stomach wall without forming a discrete mass (Laurén 1965). In Japan, adenocarcinoma of the stomach is graded as papillary adenocarcinoma (pap), well-differentiated tubular adenocarcinoma (tubl), moderately differentiated tubular adenocarcinoma (tub2), poorly differentiated adenocarcinoma (por) with solid (porl) or non-solid growth (por2), signet-ring cell carcinoma (sig) and mucinous adenocarcinoma (muc) (Jpn Res Soc Gastric Cancer, 1993). In addition, a special type composed of adenosquamous carcinoma, squamous cell carcinoma and carcinoid is included. The pap, tubl, tub2 and largely muc are identical to intestinal type, and por and sig to the diffuse type described by Laurén. Carcinoma cell lines have been established from both intestinal and diffuse type (see Table 2). There is also an adenosquamous carcinoma cell line (MKN1), endocrine cell carcinoma lines (ECC10 and ECC12, Ishihara 1992) and a choriocarcinoma cell line (SCH, Oboshi 1975) (see Tables 1 and 2). AFP-producing gastric carcinoma, initially termed as hepatoid carcinoma and later named as AFP-producing adenocarcinoma (Ishikura et al. 1986), is characterized by a poorer prognosis than that of other gastric adenocarcinomas because of its frequent lymphatic and vascular invasion. The cell lines GK, GS, ISt-1, and TAKIGAWA were established from gastric cancer patients with high serum AFP and in vitro AFP-production is confirmed except for GS. In general, morphological differentiation becomes poorer with subcultivation (see Table 2). For example, xenografts of MKN-74, which was tub2 type in origin, were adenocarcinomas with a tubular structure during early culture stages, but after prolonged culture became poorly differentiated carcinomas

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(Motoyama et al. 1986). Xenografts of MKN-1, which originated from an adenosquamous cell carcinoma, showed only squamous cell carcinoma (Suzuki, unpublished data). TAKIGAWA, derived from a nodal metastasis from a tub2 tumor, contains squamous cell carcinoma when growing as a xenograft (Sekiguchi et al. 1995). The close association of Epstein-Barr virus (EBV) with a subset of gastric carcinomas has been noted, especially in carcinoma with lymphoid stroma or medullary carcinoma with lymphocytic infiltration (Minamoto et al. 1990) or undifferentiated gastric carcinoma with intense lymphoid infiltration. The EBV genome has also been detected in tubular (intestinal) type carcinoma of the stomach (Shibata and Weiss 1992, Fukayama et al. 1993, Tokunaga et al. 1993a,b). The overall frequency of EBV association with gastric cancer is 6.7% in Japan (Tokunaga et al., 1993a) and 16% in the USA (Shibata and Weiss 1992). The frequency rises to 20.1 % in poorly differentiated gastric adenocarcinomas in Japanese (Ojima et al. 1997). The EBV-associated cancers occur equally in cardia and body (Fukayama et al. 1993) or predominantly in the corpus or antrum (Shibata and Weiss 1992). More men than women are affected (ratio approximately 3 : 1). Overexpression of p53 protein is infrequent in EBV-associated gastric tumors (Ojima et al. 1997). The biologic importance of the EBV genome in gastric cancer is debatable. EBV infection seems to occur irrespective of malignant transformation, since dysplastic and even metaplastic gastric glands also harbor EBV genomes (Hayashi et al. 1996, Arikawa et al. 1997). Systematic surveillance for EBV genomes in gastric cancer cell lines has not been done, but KATO-III, HS756T and AGS are EBV-negative by PCR (Shibata and Weiss 1992). The RF-48 cell line is EBV-positive but the cell line, derived from malignant ascites (Shaver et al. 1989), is keratin negative and leukocyte common antigen (CD45) positive by immunohistochemical analysis (Shibata and Weiss 1992), suggesting a lymphoid origin for this tumor. Recently two EBV-positive cell lines, GT38 and GT39, have been established (Tajima et al. 1998). GT38 is a cancer cell line and GT39 is an immortalized gastric epithelial cell line. These cell lines might be useful for elucidating the relationship between gastric carcinoma and EBV. The MKN-28 cell line is susceptibie to infection and proliferation of herpes simplex virus (Kodama et al. 1996a) or adenovirus type 11 (Kodama et al., 1996b). An association of H. pylori infection and gastric carcinogenesis has been observed. The International Agency for Research into Cancer has designated H. pylori as a group 1 carcinogen (IARC Monogr 1994). Research on H. pylori with gastric cancer cell lines has not been reported.

5.

GENETIC PROPERTIES OF GASTRIC CANCER

In addition to frequent LOH (loss of heterozygosity) on chromosome 17p (p53 locus) (Sano et al. 1991), several other chromosomal loci are deleted in

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gastric cancers. LOH at lq and 18q (the locus for DCC, deleted in colon cancer) is frequently detected in well-differentiated carcinomas (Sano et al. 1991, Uchino et al. 1992). Deletion on 5q, separate from the APC locus, 9p without p16 gene mutation, or 7q is also noted in differentiated carcinomas (Sano et al. 1991, Sakata et al. 1995, Tamura et al. 1996, Nishizuka et al. 1997). Loss of lp is relatively common in advanced poorly differentiated gastric carcinomas (Sano et al. 1991) and LOH at 7q within the BRCA1 locus is common in scirrhous gastric cancer, especially in young patients (Kuniyasu et al. 1994). Detailed chromosomal analysis of the gastric cancer cell lines is generally lacking, but LOH at 11p13-15 is detected in the SK-GT series. The molecular genetics of gastric cancers has been reviewed (Wright and Williams 1993, Fuchs and Mayer 1995, Tahara 1995, Yokozaki et al. 1997). An accumulation of genetic alterations is found in both intestinal- and diffusetype gastric cancers. Unlike colon and pancreatic cancers, gastric cancers rarely have mutations in the ras oncogene (Nanus et al. 1990). Mutations in the c-erbB-2, APC (adenomatous polyposis coli) and p53 genes are found mainly in intestinal-type gastric cancers. The frequency of allelic deletion of MCC (mutated in colon cancer), APC and p53 tumor suppressor genes has been reported to be 33, 34 and 64% of gastric cancers, respectively (Rhyu et al. 1994). p53 gene mutations have been detected in early stage cancers (Yokozaki et al. 1992, Uchino et al. 1993). K-sam and c-met genes are detected in diffuse type gastric cancers (Yokozaki et al. 1997). These disparities between the mutations associated with intestinal and diffuse types of gastric cancer indicate a different sequence of genetic events. Overexpression of the ERK gene, an EPH family receptor protein tyrosine kinase, has been reported in gastric cancer cell lines irrespective of intestinal type or diffuse type origin (Kiyokawa et al. 1994, Table 3). Gastric cancers express growth factors, growth factor receptors, gut hormones and cytokines, including EGF, TGF-α, amphiregulin, cripto, TGFβ1, PDGF, IGF-I or II, bFGF, gastrin, serotonin, IL-1a, IL-6 and IL-8 (Tahara et al. 1994, Tanimoto et al. 1991, Ito et al. 1993, Yokozaki et al. 1997, see Table 3). Of these, the EGF family of growth factors (EGF, TGF- a, cripto, and amphiregulin) are the most frequent growth enhancers seen in gastric cancer. EGF stimulation of EGF-R positive cancer cells occasionally causes growth inhibition, for example in the GS cell line (see Table 3). In addition to the EGF family, poorly differentiated gastric cancers, including scirrhous type, frequently show overexpression of PDGF, IGF-II and bFGF (Tahara et al. 1994). The growth rates of MKN45 and TMK-1 are stimulated by gastrin or combined stimulation with gastrin, TGFa and IGF (Ochiai et al. 1985, Watson et al. 1988, Durrant et al. 1991). Insulin, glucagon and hydrocortisone also stimulate the growth of OCUM-1 (Kubo et al. 1991b). IL-l a or IL-6 acts as an autocrine and/or paracrine growth factor for some gastric cancer cell lines (Ito et al. 1993, 1997). Growth stimulation of gastric cancer cell lines by IL-3 or granulocyte-macrophage colony stimulating factor has also been described (Dippold et al. 1991). TGF-β, an inhibitor of growth, is commonly overexpressed in gastric cancer, especially in scirrhous type, and

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in TMK-1, MKN-1, MKN-7, MKN-28 and MKN-74 (Yoshida et al. 1989). TGF- bl-activator protein, a type of serine protease, has been identified from KATO-III. This cell line produces inactive TGFb1 (Horimoto et al. 1995), but its culture medium contains active TGF-b1. Expression or reduction of TGFb1 receptor has been reported in gastric cancers and cell lines (Ito et al. 1992a,b, see Table 3), and genetic alterations including deletions and amplifications in the type II TGF-b receptor have been detected in four (SNU5, SNU-668, SNU-601, and SNU-719) of seven gastric cancer cell lines that are resistant to TGF-b1-mediated growth inhibition (Park et al. 1994). Mutation of the TGF-b II receptor gene has also been described in primary gastric cancers (Myeroff et al. 1995). The precise biological role of TGF-b1 and its receptor system in gastric cancer remains to be elucidated.

6.

CELL LINE CROSS-CONTAMINATION

Cross-contamination in gastric cancer cell lines has not been systematically studied. The MKN-7 cell line has been mislabeled. The mislabeled MKN-7 grew in suspension culture and has a lymphoid cell morphology. In addition, surface marker for leukocyte common antigen (CD45) and surface pan-B cell marker Leu12 were positive (Suzuki personal observation, 1987). From this evidence, the cell line is regarded as lymphoblastic and the “MKN-7” cell line has been deleted from the list of cell lines in the JCRB cell bank. The epithelial nature of gastric cancer cell lines should be confirmed using pan-cytokeratin staining. Mycoplasma contamination was once observed in the MKN series (Suzuki, personal observation) but they are now free from infection. Generally, however, screening for Mycoplasma contamination has not been done. Under these circumstances, it should be assumed that the cell lines are Mycoplasma positive until proven otherwise. There appear to be some interlaboratory differences between gastric cancer cell lines. MKN-74 exhibits a non-sense mutation in the p53 oncogene in one laboratory (Motozaki et al. 1992), but no mutation in the same gene in another (Matter et al. 1992). The MKN-74 from the latter laboratory was confirmed to have wild-type p53 in an independent laboratory (Nabeya et al. 1995). Another example is MKN-45. Watson et al. (1989a) reported that MKN-45 possesses 3×103 gastrin receptors per cell and that the growth of the cells is augmented by gastrin stimulation (Watson et al. 1989b). In contrast, MKN-45 lacks expression of the gastrin receptor gene in another report (Matsushima et al. 1994). Watson et al (1990) selected a subline MKN-45G from MKN-45. The subline produces gastrin in vitro at twice the amount of the parent cell line, but its gastrin receptor number remains almost the same. According to Hojo’s original description of MKN-45, the material for cultivation contained a few tumor cells with numerous neurosecretory granules by electron microscopy. The shape and size of the dense-cored granules shown in the figure in the paper resemble those of gastrin granules. Therefore, Watson et al. (1990)

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succeeded in cultivating predominantly cancer cells with a neuroendocrine nature, while MKN-45 in other laboratories may have lost its endocrine character.

7.

CELL LINES WITH SPECIAL FEATURES

HSC-39 was established from malignant ascites and HSC-40A from a xenotransplanted tumor in a nude mouse formed by inoculation of cancer cells from the same ascites (Yanagihara et al. 1991). Subclones of HSC-39, HSC40A, HSC-41, HSC-42, HSC-43, HSC-45 and SH101 are also described as HSC-39K6, HSC-40A1, HSC-41E6, HSC-42H, HSC-43C1, HSC-45M2 and SH101-P4, respectively (Yanagihara et al. 1993a). Ten subclones of AGS show similar biological characteristics (Barranco et al. 1983). Cell lines derived from germ cell tumors of the stomach are reported (see Table 1). SCH was derived from a primary choriocarcinoma in a man’s stomach and has biological features similar to those of gestational choriocarcinoma. The primary tumor of the stomach, however, contained a portion of tubular adenocarcinoma. Therefore the choriocarcinoma probably originated from the adenocarcinoma through dedifferentiation of the cancer cells (Oboshi 1975). Another germ cell tumor cell line is HOGT, cultured from a tridermal mature teratoma in an infant. HOGT cells have a fibroblast-like morphology in vitro, but xenografts in nude mice have the histological appearance of tridermal teratoma (Ishiwata et al. 1985). Despite the rare occurrence of endocrine cell carcinoma (ECC), two cell lines from gastric ECC exist, ECC10 and 12. Human gastric cancers usually form more prostaglandins than their associated normal mucosa through active cyclo-oxygenase 2 (Soydan et al. 1997). In addition, stimulation by hepatocyte growth factor augments prostaglandin production in TMK-1 (Hori et al. 1993). Telomerase RNA is expressed in gastric cancer and intestinal metaplasia, indicating that telomerase expression is an early event in gastric carcinogenesis. The gastric cancer cell lines, TMK-1, KATO-III HSC-39 and five cell lines of the MKN series exhibit increased expression of telomerase RNA (Kuniyasu et al. 1997). With poorer differentiation, epithelial cancer cells lose cohesiveness and show fibroblastic morphology or become round cells. In accordance with this phenomenon, cancer cells rarely express both epithelial and mesenchymal intermediate filaments. HLN-GAC-5 is an example (Morikawa et al. 1988), since the cell line expresses keratin (epithelial cell marker) and vimentin (mesenchymal cell marker) simultaneously. More frequent occurrences are abnormalities in adhesion molecules or their related proteins such as Ecadherin, and a- and b-catenins. Scirrhous stomach cancers and/or poorly differentiated stomach cancers frequently have abnormalities (low expression or absence) of E-cadherin and/or a-catenin (Shimoyama and Hirohashi 1991, Ochiai et al. 1994, Yasui et al. 1995). Mutations in the E-cadherin gene are

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observed in 50% of poorly differentiated gastric cancers (Becker et al. 1994). Amino acid deletion in the NH2-terminal region of the b-catenin molecule has been detected in HSC-39 (Oyama et al. 1994). Due to this abnormality, acatenin cannot bind to E-cadherin, resulting in poor cohesiveness of the cancer cells. Chemotherapy for stomach cancer has limited value, although expression of the multidrug resistance protein in gastric adenocarcinoma is low in frequency, being about 34% (Takebayashi et al. 1998). A few reports on the drug sensitivities of the cell lines have been documented (Motoyama et al. 1979, Akiyama et al. 1988, Whelan et al. 1988). A cisplatin-resistant cell line without mdr-1 gene involvement has been established (Nitta et al. 1997). A number of regimens for modulation of cancer cell growth or viability in vitro have been reported, as shown in Table 4. FAS antigen, an apoptosis receptor protein, is expressed in some differentiated adenocarcinoma cell lines (MKN-7, -28 and –4), the poorly differentiated or scirrhous carcinoma cell lines (TMK-1, KATO-III, HSC-39, and MKN-45) and the adenosquamous carcinoma cell line (MKN-1) (Ito et al. 1997). Clear differences of FAS antigen expression exist between intestinal and diffuse type stomach carcinomas, being high in diffuse type carcinoma (50% or more) and very low or absent in intestinal type carcinoma (Vollmers et al. 1997a). Expression of the p53 protein in these two types of carcinoma reveals the reverse relationship to that of FAS antigen, indicating further biological differences between these two types. Models for metastasis or peritonitis carcinomatosa have been established using stomach cancer cell lines. Liver metastasis by inoculation of KKLS, KATO-III or MKN-45 in the gastric wall of nude mice (Watanabe et al. 1993, Watanabe 1994, Watanabe et al. 1997) and blood-borne liver metastasis in chick embryo by inoculation of KKLS in chorioallantoic membrane vein (Tsuchiya et al. 1994) have been described. In the former model, intact cancer tissue (xenograft of the cell line) implanted at an orthotopic site is more likely to result in liver metastasis than inoculation of a cell suspension in the nude mouse stomach (Furukawa et al. 1993). In the chick embryo model, metastasis is associated with collagenase activity (Tsuchiya et al. 1994) or reduced expression of tissue inhibitor of metalloproteinase-1 (TIMP-1) in the cancer cells (Tsuchiya et al. 1993). Metastasis is inhibited by transfection of the TIMP1 gene into KKLS cells in the chick embryo model (Tsuchiya et al. 1993) or in nude mice (Watanabe et al. 1996). The model of peritonitis carcinomatosa has been produced with the cell line OCUM-2MD3, a subline of OCUM-2M. The cell line was isolated from a peritoneal deposit in a nude mouse, formed by the implantation in the mouse stomach of a subcutaneous OCUM-2M xenograft from another mouse (Yashiro et al. 1994a). In this model, various factors promote invasive growth or migration of the cancer cells, including CD44 (Nishimura et al. 1995a), TGFβ1 (Yashiro et al. 1995b), a2b1 integrin or a3b1 integrin (Nishimura et al. 1996), interaction of OCUM-2MD-3 with peritoneal or gastric fibroblasts (Yashiro et al. 1994b, Yashiro et al. 1996a), HGF and TGFb produced by gastric fibroblasts (Inoue et al. 1997), exogenous HGF and TGFb (Shibamoto et al.

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Table 4 Factors modulating the growth of gastric cancer cell lines

Cell line

Regimen

Enhancement (E) Growth inhibition (I) or Apoptosis (A)

EGF 5-FU-sensitivity, E flavopiridol MMC-sensitivity, E (PKC inhibitor) paclitaxel-sensitivity, E 8-chloro-cyclic AMP I TMK-1 KATO-III (analog of CAMP) MKN-7 MKN-28 MKN-45 MKN-74 TMK-1 erbstatin EGF-induced or serum(inhibitor of tyrosine kinase) stimulated growth MKN-1 MKN-7 MKN-28 MKN-45 MKN-74 KATO-III PGE2,PGE1,PGE2a, I modified PGE1, dbcAMP, forskolin, calcitonin MKN-1 transfection of wild type p53 I MKN-28 TMK-1 TGFb I I, also in vivo MKN-45 RC-3095 (GRP antagonist) RC-160 (somatostatin analog) AGS transfer of EGFR antisense I KKLS MKN-28 I MKN-28 TNF-a MKN-45 I KATO-III A HSC-39 TGFb1 A TSG-6 MKN-74

HSC-43 HSC-39 MKN-74 KATO-III NuGC-3 SC-M1 HPEGAC-2 MKN-74 MKN-45 KATO-III TMK-1 ST23132

Reference Aizawa et al. 1994 Schwartz et al. 1997 Takanashi et al. 1991

Takekura et al. 1991

Nakamura et al. 1991 Motozaki et al. 1992 Ito et al. 1992a Pinski et al. 1994

Sawada et al. 1997 Sugiyama et al. 1996 Yanagihara and Tsumuraya 1992

ADR A 5-FU A TGFb1 A paclitaxel (inhibitor of micro- A tubule assembly) IFN-b and IFN-g A

Ikeguchi et al. 1995 Yamamoto et al. 1996 Yamamoto et al. 1996 Chang et al. 1996

IFN-g and anti FAS

Ito et al. 1997

A

A SC-1 (monoclonal antibody) A in the coculture OCUM-2M tranilast (fibroblast growth inhibitor) with fibroblast CDDP-induced A, E STKM-1 caffeine

Nagao et al. 1997

Vollmers et al. 1997b Yashiro et al. 1997 Takahashi et al. 1997

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1992) or both peritoneal fibroblasts and b1-integrin (Yashiro et al. 1996b). Serum-free conditioned medium from OCUM-2MD3 contains factor(s) which cause rounding-up of mesothelial cells and growth of submesothelial fibroblasts resulting in peritoneal fibrosis (Yashiro et al. 1996c, Yashiro et al. 1996d). Gastric fibroblasts secrete a growth factor (about 10,000 in MW), which is distinct from those produced by the poorly differentiated cancer cell lines OCUM-1, OCUM-2M and KATO-III (Yashiro et al. 1996a). Production of collagen-degrading metalloproteinases in association with tissue inhibitors of metalloproteinases (Sato et al. 1992) or several kinds of matrix serine proteinases by human gastric cancer cell lines (Koshikawa et al. 1992) is also associated with cancer cell invasion. Invasion and metastasis consist of a series of linked, sequential processes (Fidler 1990). Membrane-type matrix metalloproteinases, which assist the activation of pro-matrix metalloproteinase-2 and are found in gastric carcinomas (Nomura et al. 1995), have a role in gastric tumor metastasis (Sato et al. 1994, Sato and Seiki 1996). Gastric cancer cells produce procollagen. Sakakibara et al. (1982) first reported that cloned MKN-28 and MKN-74 produce procollagen in vitro and in their xenografts. Procollagen mRNA is detectable in TMK-1, KATO-III, MKN-1, MKN-28 and MKN-45 (Yoshida et al. 1990a). In addition, KATO-III, MKN-28 and MKN-45 can stimulate collagen synthesis by human skin fibroblasts (Naito et al. 1984). Growth factors also modulate such functions. EGF or TGFa cause up-regulation of the procollagen gene as well as interstitial collagenase and stromelysin (Yoshida et al. 1990a). Interaction between cancer cells and interstitial cells seems to be crucial in controlling the behavior of the cancer cells in vivo.

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Chapter 30 Colorectal Cancer

Michael G. Brattain1, J.K.V. Willson2, A. Koterba1, S. Patil1 and S.Venkateswarlu1 1 Department of Surgery, The University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, Texas 78284-7840 and 2Ireland Cancer Center of Case Western University and University Hospitals, Case Western Reserve University and University Hospitals of Cleveland, Cleveland, Ohio 441 06. Tel: 001-210-567-4482; Fax: 001-210-5674664; E-mail: [email protected]

1.

INTRODUCTION

The generation of colorectal carcinoma cell lines from human specimens has become relatively routine since the initial attempts dating back to the 1970s. The early years of colon carcinoma cell line development were characterized by a very low success rate. For example, in a pioneering study by Leibovitz et al, continuous cell lines were developed from about 10% of over 163 specimens attempted (1). Thus, there was a concern that the low percentage of successful cell line development was not reflective of the “typical” colon cancer. During the 1980s inter- and intratumoral heterogeneity of the malignant cell compartments in various types of tumors including colon cancer became widely appreciated. Consequently, an important goal became the development of tissue culture methods that would permit the development of cell lines from a high percentage of the specimens obtained from surgery in order to provide better representation of the malignant cell types found in colon carcinoma. Several laboratories were successful in developing different broadly applicable methods generating a variety of phenotypes based on intestinal cell markers, morphology, tumorigenicity in athymic mice and histology (2-4). In addition to concerns about how representative cultured cell lines were with respect to the malignant cells in the original tumors, there were concerns that maintenance of cultures in serum-containing medium would

J.R. W. Masters and B. Palsson (eds.), Human Cell Culture Vol. II, 293–303. © 1999 KluwerAcademic Publishers. Printed in Great Britain.

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generate artifacts, particularly with respect to growth studies. Thus, the 1980s also saw the development of the use of chemically defined media for colon carcinoma cell lines (4–6,11,27). The late 1980s and 1990s have witnessed an explosion in our knowledge of the molecular genetics of cancer. Colon cancer is one of the best characterized tumor types with respect to molecular genetics. The widespread availability of human colon carcinoma cell lines has been an important contribution to the generation of molecular genetic models for the development of colon cancer (7).

2.

ESTABLISHMENT AND MAINTENANCE OF CULTURES

A wide variety of techniques have been applied to the initiation of colon carcinoma cell lines from primary specimens (Table 1). When cell suspensions have been used better success has been obtained using multi-cellular aggregates rather than single cells. High initial inocula are generally helpful for primary culture establishment. Growth of early stage malignant cells and benign adenomatous cells appears to be greatly aided by the use of a collagen substitute or a fibroblast feeder layer, both of which promote cell adhesion. Subculture of primary cultures is generally not attempted until vigorous malignant cell growth has been observed. Cell lines can be serially propagated after suspending cells by non-enzymatic as well as enzymatic methods (3,9). More differentiated cells show stronger adherence to culture surfaces than poorly differentiated cells and may, therefore, require different passaging techniques. Early passages require lower split ratios when passaging. Thus, even though success rates for the culture of individual specimens have been greatly improved and there are a wide variety of cellular phenotypes available, cell line development is an extremely selective process, both during initiation and serial passage. Moreover, earlier stage neoplasms appear to be more difficult to establish (9) and are more fastidious in their culture requirements. Normal colon epithelial cell lines have been established by immortalization. Medium requirements vary widely as a function of the individual laboratory in which cultures were initiated. Most cell lines are dependent upon serum supplements and many laboratories include additives such as growth factors, selenite, triiodothyronine and hydrocortisone. Establishment of cultures in serum-free medium is rare, but has been accomplished (4) and some cell lines have been converted to growth in serum-free medium after initial cultures have been passaged and established (4–6,11). Gazdar and colleagues (4) utilized a chemically defined medium (similar to other media) to initiate cultures and compared the success rate with the same specimens initiated in serum-containing medium. The success rate in defined medium was 38% while that obtained using serum supplemented medium was 25%. However, given

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the small numbers of specimens, it does not seem likely that the different success rates were operationally significant. The series of cell lines initiated by Gazdar and colleagues is also noteworthy in that they avoided the use of exposed surface tumor, instead choosing to utilize invasive areas and secondary sites when possible (4). Not surprisingly, one of the major difficulties in culturing primary human colon carcinoma specimens is microbial contamination of cultures (particularly yeast). This strategy was employed in an attempt to minimize the chances of microbial contamination, but may select for cell types in the later stages of the disease, since the invasive areas of tumors were favored by this technique.

3.

DEGREE TO WHICH CELL LINES REFLECT THE CLINICAL DISEASE

Large numbers of human colon carcinoma cell lines have been established as seen in Table 1. This abundance is in part due to the availability of the tissue and the relatively high success rate of cell line development from surgical specimens. Given the large number of cell lines it is not surprising that the whole spectrum of the disease is seen at the morphological level and, in so far as can be determined, at the behavioural and molecular levels as well. There is, however, only one example of a cell line established from a Duke’s A tumor (SW802, Table 1). This deficit is in part because this stage of colorectal cancer occurs in conjunction with polyps containing non-malignant but transformed epithelial cells. On the other hand, most other subgroups of colorectal carcinomas are well represented by the cell lines listed in Table 1. For example, adult colon does not express small intestine specific enzymes, but fetal colon does. About 5% of carcinomas express these fetal colon enzymes, as reflected by cell lines such as CaCo-2 and HT29 (13,14). Highly mucinous carcinomas, which are relatively rare, can also be found among the cell lines in Table 1 (eg NCI-H498). As discussed below, examples of the various histological types of colorectal carcinoma are abundant, both with respect to morphological differentiation (or the lack of it) and specialized function in tissue culture, and in subcutaneous xenografts of cell lines in athymic mice. Colorectal cancer often invades and metastasizes. Consequently, it would be expected that cell lines would reflect these properties. Much less work has been done in these aspects of colon cancer progression using cell lines than in differentiation patterns and molecular genetics (discussed below). In vitro invasion studies have identified both invasive and non-invasive cell lines (15,16). Subcutaneous xenografts of colorectal tumors are rarely invasive or metastatic (NCI-H716 is one exception). Consequently, orthotopic cecal implantation has been performed for some cell lines (16,17). Sublines of LS174T and KM12 which metastasize to the lymph nodes and liver after cecal

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transplantation have been selected for increased metastatic performance through repeated in vivo passages via the cecal route (16) or via splenic injection, which also generates liver nodules (17,18). It is not known whether any of the cell lines listed in Table 1 would not be metastatic by the cecal injection route.

4.

DEGREE TO WHICH CELL LINES REFLECT THE PATHOLOGY OF COLORECTAL CANCER

Colorectal cancer is characterized by multiple cell types reflecting the kinds of cells seen in normal crypts. Consequently, it is not surprising that colon cancer cell lines show a wide spectrum of cell types and in some cases can show a wide spectrum of morphologies within a single cell line (2,11,12). The colonic functions of lubrication by mucous production and absorption of water through vectorial transport are carried out by goblet and columnar cells, respectively. Stem cells are responsible for renewing differentiated crypt cells lost at the cell surface. One additional, but rare, cell type in normal colon is the endocrine cell. Each cell type except the endocrine cell is well represented by colon carcinoma cell lines (Table 2). Colonic carcinomas are evaluated for differentiation on the basis of glandlike formation and classified as being well, moderately or poorly differentiated. Interestingly, all 3 types of primary specimens as well as specimens from secondary sites can give rise to cell lines which show differentiated features (4,11,12). For example, the LIM1863 cell line derived from a poorly differentiated ulcerated carcinoma which extended through the colonic wall grows as organoids with both columnar and goblet cells (11). Thus, while this particular cell line does not appear to be representative of the tumor from which it is derived, it is representative of other types of colorectal tumors. Most cell lines derived from poorly differentiated carcinomas are characterized by undifferentiated growth in culture (both monolayer and suspension). The formation of gland-like structures in tissue culture is generally associated with cell lines which grow in a non-adherent or semi-adherent fashion in a 3 dimensional manner (3,4,11). Differentiation in adherent cells is generally associated with a columnar phenotype showing baso-lateral polarity with microvilli which can form transport domes when confluent (4,13). Endocrine features have not been examined in detail in most cell lines, although Park et al. (4) noted endocrine markers in a number of their colorectal cell lines.

5.

MOLECULAR GENETICS

The genetics of colorectal cancer are well studied, particularly in respect to changes associated with disease progression (7). There are numerous cell lines

Age/sex

Caco-2 Colo320DM *Colo205 DLD1 HCT8 HCT15 HT29 *HCT116 LS123 *LS 174T LoVo NCI-H498 NCI-H508 NCI-H716 NCI-H742 NCI-H747 NCI-H768 NCI-H548 NCI-H630 NCI-H684 NCI-H958 SNU-C1 SNU-C5 SNU-C4 SNU-C2A SNU-C2B

72/M 55/F 70/M – 67/M – 44/F –/M 65/F 58/F 56/M 56/M 55/M 33/M 58M 69/M 33/F 52/M 60/M 65/M 54/M 71/M 77/F 35/M 43/F 43/F

Duke’s stage – – – – – – B B D – – – – – – – – – – – – – – –

Grade

Pathology

Primary site

Specimen site

2

AC AC AC AC AC AC AC C AC AC AC AC AC AC AC AC AC AC AC AC AC AC AC AC C C

colon colon colon colon cecum colon colon colon colon colon colon cecum cecum cecum rectosigmoid cecum cecum colon rectum colon colon colon cecum colon cecum cecum

I•

1

ascitic fluid I• I• 1• I• I• I• I• shoulder mets peritoneum peritoneum ascites Il liver duct I• 1• Liver mets Liver mets Liver mets peritoneum I• I• I• I•

Culture

Authentication

Reference

E D D D D D E D D D D D D D D D D D D D D D X X X X

isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme

19 20 21 21 23 21 19 12 24 25 26 4 4 4

isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme

4 4 4 4 4 4 4 4 4 4 4

Continued on next page

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Cell Line

Colorectal Caner

Table 1

Age/sex

SW48 SW403 SK-CO-1 SW480 KM12 SW802 SW620 SW837 SW948 SW1116 SW1417 SW1463 T84 WiDr VACO1 VACO3 VACO5 VACO4 VACO6 VACO8 VACO9 VACO9M VACO10 VACO10M VACO206 VACO241

82/F 51/F 65/M 51/M – 51/M 53/M 81/F 73/M 53/F 66/F 72/M 78/F 42/F 66/M 78/F 59/M 63/M 56/M 67/M 67/M 72/F 72/F – –

Duke’s stage

Grade 4 3

D 4 B A 4 4 3 2 3 2/3 – – D C C D C D D D D D B D

Pathology AC AC C AC AC AC AC AC AC AC AC AC C AC AC AC AC AC AC AC AC AC AC AC AC AC

Primary site

Specimen site

colon colon colon colon colon colon colon rectum colon colon colon rectum colon colon colon colon cecum rectum cecum cecum rectum rectum cecum cecum colon colon

I• lung mets ascites ab wall I• I• lung mets I• I• I• I• I• lung mets I• liver mets mesenteric node I• I• I• I• I• I• liver mets omental mets colon liver mets

Culture E E D D X E E E E E E E X D D D D D D D D D D D E E

Authentication isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme isoenzyme karyotype karyotype karyotype karyotype karyotype karyotype karyotype karyotype karyotype karyotype karyotype karyotype

Reference 1 1 ATCC 1 17 1 1 1 1 1 1 1 27 28 3 3 3 3 3 3 3 3 3 3 9 9

Continued on next page

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Cell Line

298

Table 1 (continued)

Colorectal Cancer

Table 1 (continued) Cell Line

Age/sex

Duke’s stage

LIM1215 LIM1863 HCA-2 HCA-7 HCA-16 HCA-19 HCA-24 HCA-46

34/M 74/F 83/F 58/F 56/M 66/M 68/M 53/F

D D C B B B B C

Grade

Pathology

Primary site

Specimen site

AC AC AC AC AC AC AC AC

colon cecum colon colon rectum colon colon colon

omental mets I• I• I• I• I• I• I•

Culture E E E E E E E E

Authentication

Reference

isoenzyme – – – – – – –

29 11 10 10 10 10 10 10

Duke’s stage (A-D), Broder’s Grade 1-4,I• = primary tumor, D = dissociated cells (either mechanical or enzymatic), X = xenograft, E = explant culture

299

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Table 2 Cell Line

Differentiation of Specimen

In Vitro

Xenograft Histology

NCI-H548 NCI-H6300 NCI-H684 NCI-H958 NCI-H508 NCI-H742 NCI-H768 SNU-C1 SNU-C2A SNU-C4 SNU-C5 NCI-H716 NCI-H498 LIM1863 LIM1215 VACO9 CA2 HCA7 HCA16 HCA19 HCA24 HCA46 CaCO2 T84 VACO206 VACO241 HCT116

W M M M W M M M M M M P P P P P W M M W W P W W W P P

D D D D D D D U U U U U D D D D D D D D D U D D D U U

Consistent Consistent Consistent No xenografts formed Consistent No xenografts formed Consistent Consistent Consistent Consistent Consistent Consistent Consistent Rare xenografts – – Consistent Consistent Consistent Consistent Consistent Consistent Consistent Consistent Consistent Consistent Consistent

W = Well-differentiated; M = Moderately differentiated; P = Poorly differentiated; D = Differentiated cells in culture (goblet and/or columnar); U = Undifferentiated. The last column indicates whether the xenograft histology is consistent with the histology of the original specimen; “–” indicates xenograft histology was not described

representative of the various types of mutations commonly seen in primary and metastatic specimens (Table 3). Many of the mutations are frequent in pre-cancerous lesions (eg APC, Ki-ras). However, it is clear that development and progression of colorectal cancer occurs as an accumulation of mutations rather than a linear progression of mutations starting with APC (7). Thus, it would not be expected that each cell line would have all of the common mutations. The APC gene is important because it is targeted in familial adenomatous polyposis. Analysis of replication error by mismatch repair genes (RER+) has indicated that it is associated with another familial syndrome termed hereditary non-polyposis colorectal cancer (HNPCC). Over 90% of HNPCC patients show RER+, which reflects the loss of mismatch repair function due

301

Colorectal Cancer Table 3 Genetic Changes

Cell Lines

Reference

APC Mutation

Colo 201 Colo 320 DLD 1 SW1222 SW832 HT29 SW403 Caco 2 SW480 SW948 HRA19 Lovo SW1417 SWCO1 SW837 HCT116 SW403 SW480 DLD-1 HCT15 SW1116 SW480 Colo 320 HCI H747 SW1116 HCT15 SW837 HCT116 SW48 SW1417 SW1116 SW403 SW1463 VACO 6 NCH H630 sw1222 SW480 HCT116 DLD-1 LS174T SW48

33 33 33 33 33 33 33 33 33 33 33 33 33 33 34 35 36 36 37 37 37 30 32 31 31 32 38 39 39 39 39 39 39 39 39 40 40 41 43 42 42

Ki-ras

p53

DCC

RER+

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to mutations on chromosome 3 in colorectal cancer (41,42). A significant proportion of sporadic colorectal cancers are also RER+. Both types of RER+ patients show mutational inactivation of the TGFb type II receptor (41,42) in more than 90% of cases. Replacement of the type II receptor in RER+ cell lines leads to reversion of malignant properties (44). There are indications that mutations associated with the transformation and progression of colorectal cancer in RER+ may be different from those in non RER+ sporadic cancer. For example, most RER+ colorectal cancer cell lines show wild type APC and p53 while non-RER+ cell lines rarely show inactivation of the type II TGFb receptor. The predominant site of mutational inactivation in the TGFb type II receptor resides in a long repeat of 10 adenines in the amino terminal half of the gene (44), a type of structure targeted by repair defects. However, stretches of long repeats are relatively rare in coding regions, and no other comparable genes have been identified. The chromosomes associated with the mutations summarized in Table 3 are 5 (APC), 17 (p53) and 18 (DCC) for sporadic cancer. Non-RER+ cell lines frequently show aberrations in these chromosomes, but also display many other genetic changes. RER+ tumors are associated with loss of the 3p region which contains the genes for a mismatch repair subunit and the type II receptor. Alterations in chromosome lp also appear to be frequent in colorectal cancer, but as yet have not been associated with a tumor suppressor function.

REFERENCES 1. Leibovitz A, Stinson JC, McCombs MB, McCoy CE, Mazur KC, Mabry ND. Cancer Res 36: 4562,1976. 2. Brattain MG, Fine WD, Khaled FM, Thompson J, Brattain DE. Cancer Res 41: 1751, 1981. 3. McBain JA, Weese JF, Meisner LF, Wolberg WH, Willson JKV. Cancer Res 44: 5813, 1984. 4. Park JG, Oie HK, Sugarbaker RH, Henslee JG, Chen TR, Johnson BE, Gazdar A. Cancer Res47: 6710, 1987. 5. Boyd D, Levine AE, Brattain DE, McKnight MK, Brattain MG. Cancer Res 48: 2469, 1988. 6. Mulder KM, Brattain MG. Mol Endo 3: 1215, 1989. 7. Fearon ER. Adv Internal Med 39: 123,1994. 8. Brattain MG, Levine KE, Chakrabarty S, Yeonin LD, Willson JKV, Long B. Cancer Metastasis 3: 177, 1984. 9. Willson JKV, Bittner GN, Oberley TD, Meisner LF, Weese JL. Cancer Res 47: 2704, 1987. 10. Kirkland SC, Bailey IC. Br J Cancer 53: 779,1986. 11. Whitehead RH, Jones JK, Gabriel A, Lukies RE. Cancer Res 47: 2683,1987. 12. Brattain MG, Marks ME, McCombs J, Finely,W, Brattain DE. Br J Cancer 47: 373, 1983. 13. Chantret I, Barbat A, Dussaulx E, Brattain MG, Zwiebaum A. Cancer Res 48: 1936, 1988. 14. Zwiebaum A, Hauri HF', Sterchi E, Chantret I, Haffen K, Barat J, Sordat B. Int J Cancer 34: 591,1984. 15. Schlecte W, Brattain M, Boyd D. Cancer Communications 2: 173, 1990. 16. Bresalier RS, Raper SE, Hujanen ES, Kim YS. Int J Cancer 39: 625, 1987. 17. Morikawa K, Walker S, Nakajima M, Pathak S, Jessup JM, Fidler IJ. Cancer Res 48: 6863, 1988.

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Chapter 31 Prostate Cancer

James M. Kozlowski and Julia A. Sensibar Northwestern University Medical School, Department of Urology, 303 East Chicago Avenue, Tarry 11-715, Chicago, IL 60611-3008. Tel: 001-312-908-8145; Far: 001-312-908-7275; E-mail: j-kozlowski @nwu.edu

1.

INTRODUCTION

Adenocarcinoma of the prostate (CaP) is the most prevalent cancer in men. Occult CaP has been identified in over 30% of autopsy specimens in males older than 50 years of age (Holund 1980, Kozlowski and Grayhack, 1996). The rate of detection of occult CaP increases progressively with age, tripling by the ninth decade. Most of these histologic or occult carcinomas exhibit a slow growth rate and will not adversely affect the quality or duration of life. In contrast, prostate cancers which become clinically manifest often acquire phenotypes which facilitate tumor invasion and metastasis. CaP is the most common clinically detected cancer in American men. Projected 1999 estimates from the American Cancer Society suggest that CaP will account for 29% (179,300) of newly diagnosed cancers in this population. Approximately 25% of men with clinically apparent CaP die of the disease. This neoplasm is the second most common cause of cancer death among American men and is projected to account for 13% (37,000 events) of male cancer deaths in 1999 (Landis et al, 1999). About 70% of CaP originate within the peripheral zone. Transition zone origin is observed in 25% of cases (Kozlowski and Grayhack, 1996). Those tumors contained within the confines of the anatomic capsule are potentially curable with radical prostatectomy or radiation therapy. Unfortunately, only palliative treatment is available for those patients with locally advanced tumors or those with metastasis to the lymphatic and/or skeletal systems.

J.R. W Masters and B. Palsson (eds.), Human Cell Culture Vol. II, 305–331. © 1999 Kluwer Academic Publishers. Printed in Great Britain.

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Approximately 75% of patients with metastatic CaP demonstrate evidence of both objective and subjective improvement following the initiation of androgen-ablative therapy. The average duration of benefit is 18-24 months (Kozlowski and Grayhack, 1996). The uncontrolled proliferation of androgenindependent tumor subpopulations accounts for the majority of relapses in this cohort. About one half of these patients will die within the first year following relapse; the majority of the remainder will succumb to the disease process or related causes within two years (Kozlowski and Grayhack, 1996). These statistics have not changed appreciably despite the development of a diverse array of new therapies, both conventional and experimental. Despite recent advances, our basic perceptions concerning the biology of prostate cancer remain surprisingly primitive. In large part, this inadequacy can be attributed to the existing deficiency of appropriate animal models and in vitro systems. Indeed, an urgent clinical and scientific need exists for the development of truly relevant experimental systems that would accelerate our understanding of the biology of human prostate cancer and lead to the development of novel, effective, and well-tolerated therapies. Useful information has been derived from investigations performed using rodent models for CaP which include the Noble (Noble, 1977; Drago et al. 1979, 1981), ACI (Ward et al. 1980; Shain et al. 1975), Pollard (Pollard, 1973, 1980), and Dunning R-3327 (Dunning 1963; Isaacs and Coffey, 1979; Lubaroff et al. 1980) tumors. Despite their acknowledged utility, investigations performed using these systems cannot substitute for a multifaceted analysis of human CaP as assessed following successful serial propagation in vitro or xenografting in immune deficient animals. The scarcity of well-characterized, immortalized cell lines and xenograft tumor systems can be attributed to the complex and stringent growth requirements of these tumors. The following sections will briefly highlight the major features associated with those prostate tumor systems for which reliable information is available.

2.

CULTURE OF HUMAN PROSTATE CELLS

The majority of the well characterized human CaP cell lines were derived from metastatic foci from patients with hormone-refractory disease. With the exception of LNCaP and possibly MDA PCa 2, these tumor systems were preselected for their absolute or relative androgen insensitivity. In each instance, a fresh tissue harvest was followed by rapid tissue processing. The latter involved very simple approaches, often utilizing mechanical disruption followed by enzymatic dissociation and/or explanting. Collagen-coated dishes were used in most instances. In each case, successful attachment, propagation, passaging, and subsequent immortalization took place in a growth environment consisting of basic tissue culture media plus the addition of fetal calf serum.

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Testosterone concentrations in fetal calf serum (approximately 0.2 ng/ml) are lower than those found in the circulation in normal males (5–12 ng/ml). As fetal calf serum is used at a concentration of 5-20%, the level of testosterone available to cells in culture is less than 1% of the physiologic level. The human prostate is a complex organ which exhibits well-defined zonal, compartmental (epithelial versus stromal), and cellular heterogeneity (Kozlowski and Grayhack, 1996). The ‘dynamic reciprocity’ which typifies epithelial–stromal interaction is well-recognized, but poorly understood. Normal and aberrant function of this prostatic ‘tissue matrix system’ appears to be closely linked to the mechanisms underlying hyperplastic and malignant prostatic growth (Cunha et al. 1987). The difficulties associated with the long term culture of malignant prostatic epithelial cells is attributable to our relatively primitive understanding of the complex nurturing influences present within this microenvironment. In addition, the process of immortalization is probably dependent on the mutation, deletion, hypermethylation, or amplification of specific genes (Goldstein, 1990; Peehl, 1994). Prostate cancers are biologically heterogeneous and consist of a diverse array of cellular subpopulations differing from one another in a wide variety of phenotypes (including androgen sensitivity; the production of growth factors and their receptors; invasiveness and metastatic capacity (Kozlowski et al. 1988). This phenotypic diversity, which permits selected variants to develop from the primary tumor, accounts for the differences frequently noted between the parental tumor and its metastases (Kozlowski et al. 1984a,b). It is therefore not surprising that the majority of immortal CaP cell lines have been derived from metastatic foci which have flourished in patients exhibiting the hormone-refractory phenotype. Over the past 15 years, many of the longstanding obstacles to the successful in vitro propagation of benign and malignant prostate epithelial cells have been overcome. These improvements, which are discussed in detail in several reviews (Kozlowski et al. 1988; Peehl, 1992, 1994), include: (1) the acquisition of fresh prostatic tissue (primary and metastatic) from biopsy, surgical, and autopsy specimens; (2) the immediate histologic or cytologic confirmation that the tissues removed for experimentation are composed predominantly of malignant cells; (3) prompt mechanical dissociation, followed by collagenase digestion, the duration of which is predicated on tissue volume; (4) immediate separation of epithelial and stromal components using a 5-step discontinuous Percoll gradient technique or the immediate transfer of the cell suspensions in growth media to collagen-coated dishes; (5) the use of serum-free medium, such as PFMR-4a (Peehl and Stamey, 1986) WAJC-404 (Chaproniere and McKeehan, 1986; McKeehan et al. 1984) and PrEGM (BioWhittaker), each of which contains relatively low ionic calcium concentrations and has been defined specifically for cultivation of prostatic epithelial cells; (6) the addition of essential growth factors and additives, such as zinc-stabilized insulin, transferrin, selenous acid, bovine serum albumin, linoleic acid, epidermal growth

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factor, prolactin, polyvinyl pyrrolidone, cholera toxin, and bovine pituitary extract; (7) refeeding the primary cultures with growth media every 3–4 days until the cells are semiconfluent; (8) subculture of actively dividing subconfluent cells (using trypsin/EDTA) and distribution of approximately 5 × 104 cells per 100-mm collagen-coated dish for serial culture; and (9) cryopreservation of aliquots at the time of each passage, since strains of benign and malignant prostatic epithelial cells generally survive only 3–5 passages (15–20 populations doubling) before the onset of senescence (Kozlowski et al. 1988; Peehl, 1992). The rapid elimination of stromal contaminants is highly desirable. This is accomplished in a number of ways. First, the collagenase digest is relatively toxic to stromal cells. Second, the use of a discontinuous Percoll gradient technique permits the rapid separation of epithelial cells (which are more dense) from stromal passengers (Cooke and Littleton, 1985; Kozlowski et al. 1988). Alternatively, the use of multiple, brief centrifugations of the cellular digest may produce similar results (Peehl, 1992). Finally, serum-free growth is not conducive to the proliferation of stromal cells. These techniques permit the isolation and expansion of virtually pure epithelial populations. The latter perception has been validated utilizing discriminatory immunohistochemistry, as well as 2-dimensional gel electrophoresis (Kozlowski et al. 1988; Sherwood et al. 1989, 1990; Peehl 1992). It should be emphasized that fresh prostate cancers (particularly high Gleason grade tumors which lack a distinct acinar configuration) are relatively fragile and their exposure to dissociating enzymes should be limited (Peehl, 1992, 1994). Unfortunately, normal, hyperplastic, and malignant prostate epithelial cell cultures cannot be reliably distinguished on the basis of morphological features. Similarly, there are no cancer-specific antibodies suitable for this purpose. Establishing the cytokeratin (CK) profile of these cultures is mandatory in order to validate their epithelial origin. Sherwood and associates (1990) demonstrated that epithelial cells harvested from fresh BPH tissue by Percoll gradient centrifugation and propagated in vitro using selective culture techniques showed alterations in CK expression compared to intact human prostates. Specifically, CKs 6, 14, 16 and 17 were noted in cultured BPH epithelial cells but not fresh normal prostate or BPH tissue. Immunoblot analysis of the established CaP cell lines PC-3, DU-145, and LNCaP showed expression of CKs 8 and 18 but not CKs 5,7, and 15 which were observed in benign prostate. These findings are in concert with loss of the basal cell CK phenotype (5/15) and maintenance of the adluminal or secretory cell CK phenotype (8/18) in prostate cancer. Prostatic acid phosphatase (PAP) and prostate specific antigen (PSA) are the prototypic markers of the adluminal or secretory phenotype. Growth in monolayer culture is associated with a number of aberrations including: (1) loss of androgen responsiveness; (2) a shift from a differentiated to a proliferative phenotype (Fong et al. 1991; Lee et al. 1995); and (3) loss of the cells’ ability to synthesize/secrete these tissue-specific markers. Overcoming this

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environmental distortion may require plating cells at high density and utilizing growth on natural substrates (collagen or Matrigel) (Peehl 1992, 1994; Fong et al. 1991, 1992). These approaches facilitate maintenance of cell polarity and critically important cell-cell interactions which are required for differentiated function. Of the reasonably well characterized CaP cell lines listed in Table 1, only LNCaP (and possibly MDA PCa 2) maintain androgen responsiveness and the ability to express these marker proteins. Before concluding this section, it is important to reemphasize several points. First, most of the well-characterized CaP cell lines were established utilizing relatively simple tissue culture techniques. Second, our enhanced understanding of prostate biology and the development of sophisticated tissue culture techniques have not translated into the establishment of a diverse array of new, well-characterized, continuous cell lines.

3.

CONTINUOUS CELL LINES

Cancers originating from the epithelial cells of the prostate constitute over 95% of all prostatic malignancies (Kozlowski and Grayhack, 1996). The Gleason classification is currently the most popular system used to grade prostatic carcinoma. It employs low-power magnification (×40-100) to assess the acinar pattern of the tumor and its relationship to the stromal compartment. Five tumor grades progressing from the most (grade 1) to the least (grade 5) differentiated are recognized. About 50% of prostate cancers manifest more than one Gleason histologic pattern. That the presence of a histologically heterogeneous tumor has biologic significance led to the use of the sum of the primary and secondary patterns as the Gleason (pattern) score (Gleason 1977; Kozlowski and Grayhack, 1996). Possible pattern scores range from 2–10. This permits the separation of tumors into well-differentiated (2–4), moderately-differentiated (5–7), and poorly-differentiated (8–10). Histologic tumor grade is the most important predictor of tumor progression for clinically localized disease and the Gleason tumor score correlates with a variety of adverse phenotypes including: invasive and metastatic capacity, the subsequent development of lymphatic and skeletal metastasis; ureteral obstruction; and cancer death rate (Catalona, 1984; Gleason, 1977; Kramer et al. 1980). With the advent of PSA screening, there has been a distinct ‘stage shift’ in that most patients present with clinical organ-confined disease. The majority of these prostate cancers possess an intermediate Gleason pattern score. In about 30% of cases, the tumor is under-staged by clinical criteria and evidence of extracapsular extension is documented following step-section analysis of radical prostatectomy specimens (Kozlowski and Grayhack, 1996). It is currently uncommon for patients to present with bulky, locally advanced tumors or exhibit overt evidence of metastatic disease. Nonetheless, about 25% of

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men with CaP die as a direct result of the disease (Catalona, 1994). Their demise is directly attributable to the uncontrolled proliferation and dissemination of tumor subpopulations which are endowed with invasive and metastatic capacity. From a histologic standpoint, these tumors are generally poorly differentiated. The ability of these tumor systems to express PSA is often blunted by their undifferentiated state, as well as the selection pressure induced by androgen-ablative therapy (Kozlowski and Grayhack, 1996). Nonetheless, the majority of these cancers maintain some ability to express PSA, in some cases at very high levels. The idealized library of human CaP cell lines should span the spectrum of clinical and biological diversity summarized in Table 4 and in the preceding paragraph. It would be highly desirable to establish cell lines derived from primary, organ-confined prostate cancers possessing low, intermediate, and high Gleason pattern scores. In addition, this idealized library should consist of cell lines derived from locally advanced tumors and representative metastatic foci (lymph nodes, bone). This latter group should be composed of treatmentnaive (ie, androgen sensitive) and post-treatment (ie, hormone refractory) tumor systems. Other desirable features would include maintenance of invasive and metastatic capacity, as well as the ability to express PSA. A careful analysis of the 8 immortalized CaP cell lines depicted in Table 1 reveals that they fall far short of the idealized library described in the preceding paragraph. Only 2 of these cell lines (JCA-1, ND-1) were derived from primary prostate cancers (Muraki et al. 1990; Narayan and Dahiya, 1992). The 6 remaining lines were derived from metastatic foci, including: brain (DU-145) (Stone et al. 1978), lymph node (LNCaP, TSU-PR1, DuPro-1) (Horoszewicz et al. 1980, 1983; Iizumi et al. 1987; Gingrich et al. 1991), and bone (PC-3, MDA PCa 2a, b) (Kaighn et al. 1978, 1979; Navone et al. 1997). The primary-derived cell lines have not been as rigorously characterized or evaluated as those derived from metastases. Nonetheless, a few features are worth additional commentary. ND-1 was obtained from a radical prostatectomy specimen in a treatment-naive patient whose tumor exhibited a Gleason pattern score of 3+3. Over 80% of such tumors have the ability to express PSA and exhibit androgen responsiveness (Kozlowski and Grayhack, 1996). In contrast, ND-1 is relatively or absolutely hormone-refractory (Narayan and Dahiya, 1992). Similarly, JCA-1 was derived from a treatment-naive patient who underwent radical prostatectomy. The tumor of origin exhibited a Gleason pattern score of 4+4. Again, one would anticipate some degree of androgen responsiveness and the ability to express PSA. However, JCA-1 exhibits an androgen-independent phenotype (Muraki et al. 1990). Of the cell lines derived from metastatic foci, four are absolutely hormonerefractory (DU-145, PC-3, TSU-PR1, DuPro-1). In each instance, the cell lines were derived from patients who had been heavily pre-treated, which exerts a selection pressure which favors the emergence of pleomorphic, undifferentiated, androgen-insensitive prostate tumor cells.

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Only cell lines LNCaP and MDA PCa 2a, b maintain their androgen sensitivity and the ability to express PSA in vitro and in vivo. It must be emphasized that the patients from whom these tumor cell lines were derived were also heavily pre-treated. LNCaP has been much more rigorously evaluated than MDA PCa 2a, b. The androgen receptor in LNCaP cells has a point mutation in the ligand-binding domain (Trapman et al. 1990). As a result, testosterone, dihydrotestosterone, estradiol, progesterone, flutamide, and hydroxyflutamide can transactivate target genes (Umekita et al. 1996). Presumably, these continous cell lines represent the unique clonal expansion of androgen-sensitive tumor subpopulations which were also endowed with phenotypes permitting in vitro propagation. There are additional CaP cell lines that have been reported in the literature, but whose characterization is insufficient for inclusion in Table 1. The cell line LRVA-4 was established from a primary prostate tumor (Gleason score of 8) in a 70 year old man (Fan 1988). The tumor tissue was obtained at autopsy 4 hours post-mortem. A simple explant technique was used to establish the line. The culture medium used was a 50:50 mixture of Ham’s F-12 and Eagle’s MEM. Initially, 25% fetal calf serum was added to the culture media. This was later decreased to 10%. In vitro, the cell line apparently displayed 2 distinct subpopulation growth patterns (monolayer and multicellular spheroids). Cell line BM1604 was established from a 67 year old man with localized prostate cancer (van Helden et al. 1994). The tumor tissue was removed from a radical prostatectomy specimen and exhibited a Gleason score of 5. Tissue fragments were subjected first to enzymatic dissociation followed by explanting. The explants were cultured utilizing two different approaches. The first employed growth on standard uncoated tissue culture flasks utilizing RPMI1640 media containing 5% fetal calf serum. Alternatively, explants were cultured on ECM-coated tissue culture flasks in the absence of serum using an enriched Ham’s F-12 medium. The cells apparently grew as islands which fused when the cultures became confluent, and did not maintain their ability to express PSA/PAP. DNA fingerprinting demonstrated that the DNA from the tumor was essentially the same as that in the patient’s blood, thus confirming the origin of the cell line. A total of 6 locus-specific differences were identified between the blood and tissue sample DNA. Karyotype analysis demonstrated the absence of the Y chromosome. The ALVA-31 cell line was established by Loop and associates (1993) from a radical prostatectomy specimen. The tumor of origin was a well-differentiated adenocarcinoma (Stage B2). The primary specimen was positive for PSA by immunohistochemistry. Needle biopsies were obtained from the main tumor mass and subjected to further mincing. Tissue explants were seeded into culture flasks containing RPM1-1640 + 10% fetal calf serum. The initial tumor cultures (up to passage 3) were supplemented with 10%-conditioned medium obtained from confluent lung adenocarcinoma cell line cultures. The latter

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Table I General background information regarding human CaP cell lines Cell line

Patient Patient race, age blood type

DU-145

69

PC-3

62

LNCaP

50

TSU-PR1 73 JCA-1

67

DuPro-1

57

ND-1

na

Caucasian/O+ T4 Nx Mlc HR AP nl Caucasian/na T3b(?),Nx,Mx HR AP (-) Caucasian/B+ T3-4(?),N1, Mla-b HR AP (-) Asian/na T3-4(?) Nx Mla-b HRAP(-) Caucasian/A+ T2a(?) NO (?) MO (?) AP(nl) na/na Tx Nx Mla HR AP (nl) na/na

T2b N0 M0 ?AP ?PSA

Black/na

Tx Nx M1b HR-PSA

Pathology stage*

Pathology Primary Specimen grade site site

pT4 N1 Mlc MD-PD

prostate brain

prostate pT4(?) N PD M1 b-c pT3-4(?) N1 MD prostate M1 b(?) pT3-4(?) MD prostate Mx(?) Mla-b pT2a(?) N1 MD-PD prostate M0(?) pTx Nx M1a PD prostate pT3a NO MO MD Gleason 3+3 pTxNxM1b PD

bone

Culture Authenmethod tication Availability E

CH, K, I ATCC, DSMZ Stone et al. 1978

D

CH,I,K ATCC

lymph node E (supraclavicular) lymph node D (cervical) prostate E lymph node X (supraclavicular) DÞ E

CH, K CH, K CH, K CH, K

Kaighn et al. 1979

ATCC, DSMZ Horoszewicz et al. 1980 Tatsuo Iizumi Iizumi et al. 1987 John Isaacs Muraki et al. 1990 J. Muraki

E

CH, K

J. Gingrich P. Walther K.Webb P. Narayan

prostate paraspinal mass D

CH, K

N. Navone

prostate prostate

Primary reference

Gingrich et al. 1991

Navone et al. 1997

Narayan and Dahiya, 1992

Abbreviations: HR, hormone refractory; E, explant; CH, comparative histology; K, Karyotype, cell line; I, isoenzyme analysis, cell line; AP, acid phosphatase; D, dissociation; MD, moderately differentiated; PD, poorly differentiated; PSA, prostate specific antigen; X, xenograft. *See Table 4 for staging information

Kozlowski and Sensibar

MDA PCa 63 2a, b

TNM category (clinical)*

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technique was designed to stimulate tumor growth until adequate cell density was achieved. Individual epithelial cell colonies were isolated from contaminating stromal cells by removing them from the monolayer with a Pasteur micropipet. By passage 3, the cells were adapted to growth in semisolid media. With continued passage, PSA immunoreactivity was lost. The modal chromosome number was 59 (range: 24–112) and all metaphases were aneuploid. Other characteristics of the karyotype included: absence of the Y chromosome; a large marker chromosome mapped between chromosomes 3 and 4; loss of chromosome 10; a 5/9 translocation and additional small marker chromosomes. ALVA-31 is tumorigenic in intact male, castrate male, and female nude mice. Although testosterone depletion did not influence the overall tumor induction rate (>90%), tumor growth rate was significantly reduced. Metastases were not observed following subcutaneous injection. Despite low level expression of the cytosolic androgen receptor, ALVA-31 cells have the capacity to reduce testosterone to dihydrotestosterone. In conclusion, the growth of the cell line is modulated by androgens, but ALVA-31 is not androgen-dependent (Loop et al. 1993). The 1013L cell line was established from an undifferentiated primary prostate cancer which exhibited both acinar and ductal features (Williams 1980). It represents the only human CaP cell line that grows in stationary suspension culture (not as a monolayer). 1013L cells proliferate as small spheroids (in suspension) in RPM1-1640 medium supplemented with 10% fetal calf serum (Billstrom et al. 1995). Cytogenetic studies have demonstrated that 1013L has a modal chromosome number of 75; retained the Y-chromosome until passage 44; and exhibits an unusual pattern of interstitial C-bands (Hartley-Asp et al. 1989). The tumor expresses CKs 7, 8, 18, and 19. 1013L is hormone-independent and does not express PSA. This tumor appears to lack invasive potential and has virtually undetectable production of uPA (Billstrom et al. 1995). 1013L is tumorigenic in both male and female SCID mice, but must be implanted in a sterile gelatin sponge for local tumor formation to occur following subcutaneous implantation. The frustration associated with attempts to establish new human CaP cell lines has understandably stimulated interest in the use of DNA transfection. The majority of these attempts have involved the use of SV40T antigen introduced into neonatal (Kaighn et al. 1989), benign adult prostatic epithelial cells (Cussenot et al. 1991), and non-neoplastic prostate cancer epithelial cells (Jackson-Cook et al. 1996; Bright et al. 1997), immortalization by human papillomaviruses (Weijerman et al., 1994) or transfection with oncogenes (Rhim et al. 1994). These aspects have been reviewed (Webber et al. 1977). More recently, introduction of the telomerase gene to facilitate the immortalization of cell lines has been reported (Bodnar et al. 1998).

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4.

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COMPARISON OF TUMOR PATHOLOGY WITH IN VITRO FEATURES AND XENOGRAFT PATHOLOGY

Ideally, there should be a close phenotypic correlation between the prostate cancer of origin and the continuous cell line. The latter should possess in vitro and in vivo (xenograft) characteristics that closely link it with the original tumor. Shared phenotypes should include: histopathology, expression of tumor markers, invasive potential, tumorigenicity, and metastatic potential. The subsequent brief discussion will highlight the fact that the cell lines listed in Table 2 do not perfectly parallel the human tumor of origin. The phenotype most closely maintained is that of histopathology. In virtually all instances, the original tumor exhibited characteristics of either moderately-differentiated or poorly-differentiated prostate adenocarcinomas. In no instance has there been a significant discordance between the xenograft pathology and that exhibited by the original tumor of origin. The issue of tumor marker expression is more difficult to evaluate. In most instances, only sketchy information is available with respect to important patient-related characteristics. The latter include information regarding serum PAP/PSA levels and whether the patient-derived tumor was evaluated immunohistochemically for the expression of these markers. As stated previously, the only cell lines that maintain androgen responsiveness, possess functional androgen receptors, and are capable of PSA production are LNCaP and MDA PCa 2a, b. In the case of LNCaP, the available patient information does not permit an accurate comparison. With respect to MDA PCa 2, PSA expression was a distinct feature of the patient’s tumor. Of interest, cell line DuPro-1 was derived from a xenograft system (DU 5683) whose features included: moderately-differentiated to poorly-differentiated histology; androgen sensitivity and PSA expression. Once that xenograft was adapted to in vitro growth, the resulting cell line assumed an androgen-insensitive phenotype. For each of the cell lines, the pathologic stage assigned to the tumors of origin clearly indicates acquisition of the invasive phenotype. The documentation of extracapsular disease (ND-1) and frank metastasis (all other lines) is indicative of tumor systems capable of degrading extracellular matrix (ECM). The development of a modified Boyden chamber chemoinvasion assay (Albini et al. 1987) facilitates a qualitative and quantitative analysis of a given cell line’s invasive capacity. Of the cell lines listed in Table 2, this type of analysis has been performed for DU-145, PC-3, LNCaP and TSU-PR1. Under standard assay parameters and utilizing non-selected parental cell lines, only PC3 and TSU-PR1 demonstrate a significant propensity for invasion through lamininrich basement membrane biomatrix designated Matrigel (Kozlowski et al. 1988; Lee et al. 1993; Gaylis et al. 1989; Keer et al. 1991). This feature correlates with increased expression of urokinase-like plasminogen activator (uPA)

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and the elaboration of other matrix-degrading proteases by these respective tumor cell lines (Gaylis et al. 1989; Keer et al. 1991). Despite the fact that DU145 and LNCaP were derived from metastatic foci, their constitutive ability to penetrate this basement membrane barrier is weak. Consistent with their transformed phenotype, all of the cell lines listed in Table 2 (with the exception of LNCaP) manifest tumorigenic potential following direct subcutaneous inoculation into athymic male nude mice. With respect to LNCaP, its tumorigenic potential must be facilitated by co-injection with prostate or bone fibroblasts (Gleave et al. 1991, 1992) or Matrigel (Lim et al. 1993). Matrigel co-injection was also used to facilitate the xenografting of MDC PCa 2a, b (Navone et al. 1997). Of importance, LNCaP xenografts maintain their androgen responsiveness (Lim et al. 1993; Gleave et al. 1992). Indeed, studies utilizing this murine model have demonstrated a significant correlation of serum PSA to tumor volume and weight. Castration leads to involution of these tumors and stabilization of the serum PSA levels. Other investigators also utilized this model system to demonstrate that decreases in circulating PSA following anti-androgen therapy may not always reflect a corresponding reduction in tumor volume (Gleave et al. 1992). Of the cell lines listed in Table 2, 6 are derived from metastatic foci. Ideally, these tumor systems should maintain the metastatic potential demonstrated in the natural host. It is now acknowledged that the subcutaneous deposition of human tumor cell suspensions into the flank regions of young athymic nude or Scid mice may underestimate the metastatic potential (Kozlowski et al. 1984; Kozlowski et al. 1988). Early studies have demonstrated that metastatic capacity might be better demonstrated by utilizing alternative routes of injection, including intravenous (tail vein), intrasplenic or intracardiac. More recently, the search for the most “fertile microenvironment” has logically led to the concept of orthotopic implantation (ie, direct intraprostatic injection) (Stephenson et al. 1992). The only parental (unselected) cell lines which exhibit metastatic potential are the PC3 and TSU-PR1 systems. Of note, the castration-induced regression of established LNCaP xenografts ultimately leads to the emergence of an androgen-insensitive variant (Wu et al. 1994). Induced by this selection pressure, the androgen-insensitive LNCaP variant is capable of metastasis to lymph nodes and bone following orthotopic implantation (Thalmann et al. 1994).

5.

MOLECULAR GENETICS

Brothman and associates (1990) described the major karyotypic changes associated with prostate cancer. Common abnormalities included: loss of chromosomes 1, 2, 5 and Y; gains of chromosome 7, 14, 20 and 22; and rearrangements involving 2p, 7q and 10q. Table 3 reveals the frequency with

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Table 2 Comparison of original tumor pathology with respective CaP cell liness Cell Line

Tumor pathology

In vitro features

Xenograft pathology

DU-145

MD-PD (+/–) AP PD, (?) AP

MG, PD, MEM/RPMI-1640 + 10% FCS AI (+) SAG, (+/–), AP, (-) PSA, (+/–) Invasive MG, PD, F12K/RPM1-1640 + 5-10%FCS, AI, (+), SAG, (-) AP, (-) PSA (+)Invasive Disorderly MG, loosely attached, MD, AS, (+) AR, RPMI-1640 + 10% FCS, (+) SAG (+) AP, (+) PSA, (-) Invasive

grade 2, (+) T in male and female NM (+/–) MP, (-) AP, (-) PSA PD, (+) T in male and female NM (+) MP, (–) AP, (–) PSA MD-PD (+) T with stroma/Matrigel male >>>female NM AS (+) AP (+) PSA (+) AR (-)MP- parental line S.C. site PD (+) T male=female NM AI (+) MP (–) AP, (–) PSA

PC-3

MD (?) AP

TSU-PR1

MD (?) AP

JCA-1

MD-PD Gleason 4+4 (+/–) AP (+ /–) PSA

DuPro–1

Patient = PD ?AP Donor Xenograft = MD-PD, (+) PSA, AS

MG, tightly packed PD AI (-) AR DM160/RPMI-1640 + 10-15% FCS (+) SAG (-) AP, (-) PSA, (+) Invasive MG MD-PD AI RPMI-1640 + 10% FCS (+/–) AP, (-) PSA, ? Invasive MG Isolated islands, PD RPMI-1640 + 10% FCS (+) SAG, (-) AP, (-) PSA, AI, ? Invasive

MD-PD (+)T male> >female NM AI (+) AP, (–) PSA, (–) MP PD (+) T, male=female NM AI (–) AP, (–) PSA, ?MP Continued on next page

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LNCaP

Prostate Cancer

Table 2 (continued) Cell Line

Tumor pathology

In vitro features

Xenograft pathology

ND-1

MD-PD Gleason 3 +3 ?AP ? PSA PD + PSA

MG, tightly packed MD-PD (+) SAG, (+/–) PSA DMEM + 10% FCS, ? Invasive Grow in clumps, form layers, PD BRFF-HPC1 or F12K (+) and 20% FBS (+)SAG,(+)AS,(+)AR (+) PSA, ? Invasive

MD-PD (+)T male NM (+/–) AP, (+/–) PSA ?AI, ?MP ?PD (+) T male NM AS (+) PSA, (–) MP

MDA PCa 2a, b

Abbreviations: MG, monolayer growth; AI, androgen independent; SAG, soft agar growth; AP, acid phosphatase; PSA, prostate specific antigen; NM, nude mice; MP, metastatic potential; T, tumorigenic; MD, moderately differentiated; PD, poorly differentiated AS, androgen-sensitive; AR, androgen receptor.

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which the well-characterized CaP cell lines demonstrate these features. A number of more recent and equally important observations have been forthcoming with respect to the genomic changes associated with prostate cancer. Step-section analysis performed on whole gland specimens containing prostate cancer usually reveals the presence of multiple tumor foci (Kozlowski and Grayhack, 1996). It has been debated whether these observations reflect a ‘field change’ phenomenon (Grayhack 1974) or merely represent a manifestation of intraglandular spread following unifocal tumor development. The studies conducted by Cheng and associates (1998) involved a molecular analysis of microsatellite alterations in the DNA from separate tumors in the same prostate. Their study focused on factors for the putative tumor suppressor gene on chromosome 8p (Macoska et al. 1995) and for the BRCA1 gene on chromosome 17q. The pattern of allelic loss documented in that study was compatible with independent tumor origin in 15/18 informative cases. Prostatic intraepithelial neoplasia (PIN) represents the precursor to most invasive prostate cancers originating within the peripheral zone (Helpap et al. 1995; Bostwick 1995; Grignon and Sakr, 1996). A number of recent studies have demonstrated that frequent allelic loss at chromosome 7q31-q35, 8p1221, 8p22, 8q22, 8q22.2, and 8q12.2, occur in both PIN and invasive prostate cancer (Emmert-Buck et al. 1995; Zenkhausen et al. 1994; Vocke et al. 1996; Bostwick et al. 1996). The implications associated with another potential precursor lesion designated atypical adenomatous hyperplasia (AAH) have been more controversial. It is thought by some that AAH may be related to low-grade adenocarcinomas originating within the transition zone (Helpap et al. 1995; Grignon and Sakr, 1996), but others have refuted this association Table 3 Karyotypic abnormalities in CaP and selected cell lines Main genetic changes associated with prostate cancer

Cell lines which exhibit these genetic changes

Double Minutes Marker Chromosomes Hyperdiploidy (–) 1 (–) 2 (–) 5 (–) Y (+) 7 (+) 14 (+) 20 (+) 22 RA 2P RA 7q RA 10q

PC-3; DU-145 PC-3; TSU-PRI; DU-145; LNCaP; JCA-1; ND-1; Du-Pro-1 PC-3; TSU-PRI; DU-145; LNCaP; JCA-1; ND-1; Du-Pro-1 PC-3 PC-3 PC-3; JCA-1 PC-3; DuPro-1 DU-145; PC-3; LNCaP; TSU-PR1; DuPro-1; ND-1 DU-145; PC-3; LNCaP; TSU-PR1; JCA-1; ND-1; DuPro-1 DU-145; PC-3; LNCaP; TSU-PR1; JCA-1; DuPro-1 DU-145; LNCaP; TSU-PR1; JCA-1; DuPro-1; ND-1 MDA PCa2 JCA-1; MDA PCa2 TSU-PR1; JCA-1

Abbreviations: (–), loss of chromosome; (+), gain of chromosome; RA, rearrangement of ch r o m o s o m e

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Prostate Cancer Table 4 Staging designations for carcinoma of prostate

Description

Clinical Stage UICC* Hopkins Memorial AJCC, 1992 (Modified Jewett) (Modified Whitmore, 1990)

Disease localized to prostate A A Clinically unsuspected T1 Incidental histologic finding Focal, low-grade A 1† A1‡ T1a† Intragland lump diffuse or high grade T1b§ A2 A2 Tumor identified, needle biopsy T1c (e.g., PSA elevated) Risk recognized clinically (confined T2 B B to prostate) Tumor confined to 1 lobe surrounded by normal tissue; B1 2 cm B2 Half a lobe or less T2a More than half a lobe, but not both T2b Tumor in both lobes T2c B2 B3 Disseminated disease Periprostatic, extends through capsule T3 C C Lateral sulcus C1 Unilateral T3a Bilateral T3b Base of seminal vesicle and/or T3c C2 lateral sulcus > Base of seminal vesicle and/or T3c C3 other structure Tumor fixed: invades adjacent structure T4 other than seminal vesicle Bladder neck, extend sphincter and T4a rectum Levator or pelvic wall T4b Distant D D Pelvic lymph nodes N1-3** D1 D1 Bones, lung, etc. M1a–1c*** D2 D2 Elevated acid phosphatase only D0 D0 *UICC (International Unon Against Cancer); AJCC (American Joint Committee on Cancer) 1992. Note that T0 category is now listed as no evidence of primary tumor (Schroeder, 1992); † Tumor present in 5% or less of tissue; ‡ Tumor present in more than three microscopic foci. § Tumor present in more than 5% of tissue. **N1– one regional code < 2 cm; N2 - one regional node >2 cm 5 cm. *** M1a – nonregional nodes; Mlb –bone; M1c – other site.

(Srigley, 1988). Recent studies by Cheng and associates (1998) demonstrated that 47% of AAH cases were associated with allelic imbalance at the same 5 microsatellite polymorphic markers typical of PIN. This data provides a genetic link between prostate cancer and AAH.

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Telomerase is a ribonucleoprotein enzyme that synthesizes telomeric repeats into chromosomal ends using a segment of its RNA component as a template. Telomerase activity is intimately linked with the maintenance of the telomere, and its activation may play a role in cell immortality (Rhyu 1995). The telomeric repeat amplification protocol (TRAP) is a highly sensitive PCRbased assay which permits the evaluation of telomerase activity (Kim et al. 1994) This approach has documented telomerase activity in most human malignancies and cancer cell lines, suggesting that its activation may be a critical step in cell immortalization and oncogenesis (Royle 1996). Studies by Zhang and associates (1998) identified telomerase activity in 92% of prostate cancers. Of great interest and potential importance were the observations of telomerase activity in a wide spectrum of tissues located adjacent to cancer foci, including: PIN (73%), BPH (50%), atrophy (16%), and normal-appearing tissues (36%). Possible explanations include the presence of occult cancer cells in these non-tumor foci or the presence of early molecular alterations of cancer that were histologically inapparent. Utilizing FISH analysis, Takahashi and associates (1994) analyzed needle biopsy cores from randomly selected radical prostatectomy specimens. Common numerical chromosome alterations were gains of chromosome 7 and 8, which were noted in 76% and 59% of aneuploid tumors. Gains of chromosome 7 and 8 were correlated with a higher Gleason score. Gain of chromosome 7 was significantly correlated with advanced tumor pathological stage. In a follow-up study, a similar analysis was performed on paraffin-embedded specimen blocks (following radical prostatectomy). Takahashi and associates (1995) noted that gains of chromosome 8, aneusomy of chromosome 8, and aneusomy of chromosome Y correlated highly with systemic cancer progression. Multivariate analysis subsequently demonstrated that gains of chromosome 8 and aneusomy of chromosome Y were significant independent predictors of systemic cancer progression. Carter and associates (1990) and Kunimi and associates (1991) performed prostate cancer allelotyping studies which revealed frequent loss of heterozygosity (LOH) on chromosomes 8p (50%), 10p (55%), 10q (30%), 16q (31– 60%), and 18q (17–43%). These observations were expanded by Visakorpi and associates (1995) who performed CGH to screen for DNA sequence copy number changes along all chromosomes in 31 primary and 9 recurrent uncultured prostate carcinomas. They detected that 74% of primary prostate cancers showed DNA sequence copy number changes. In that study, losses were five times more common than gains and most often involved 8p (32%), 13q (32%), 6q (22%), 16q (19%), 18q (19%), and 9p (16%). Of note, frequent gains of 7,8q, and X were associated with prostate cancer progression and the development of hormone-independent growth. Cher and associates (1996) also used CGH to study prostate cancer metastases in patients who had received no prior treatment compared to primary or

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recurrent tumors in patients who had received long-term androgen-deprivation therapy. In treatment-naive metastatic foci, several altered chromosomal regions were documented including: 8q gain (85%), 8p loss (80%), 13q loss (75%), 16q loss (55%), 17p loss (50%), and 10q loss (50%). Of interest, the observations generated in the “treated” group were very similar to those of the “treatment-naive” group. The study also demonstrated a number of previously undetected regions of frequent loss including 2q (42%), 5q (39%), 6q (39%), and 15q (39%). Gains of chromosomes llp (52%), lq (52%), 3q (52%), and 2p (45%) were also documented. It is suspected that the regions of loss contained known or candidate tumor suppressor genes. Chromosome 5q31 contains the a-catenin gene which is an obligatory component of the E-cadherin-mediated cell adhesion complex (Furukawa et al. 1994). PC-3, DU-145, and TSU-PR1 have reduced or absent levels of a-catenin or E-cadherin (Morton et al. 1993). LOH at 7q31.1 (c-met oncogene locus) is correlated significantly with a higher Gleason score and lymph node metastasis (Takahashi et al. 1995; Pisters et al. 1995). Chromosome 10q22.1-qter harbors the candidate tumor suppressor gene Mxil (Eagle et al. 1995). The Mxil protein is thought to repress c-Myc activity and loss of this suppression may lead to c-Myc activation (Zervos et al. 1993). LOH at 10q23.3, a region commonly deleted in prostate cancer, may involve the loss of the candidate tumor suppressor gene designated PTEN/MMAC1 (Suzuki et al. 1998). Inactivation of this gene may contribute to the acquisition of metastatic potential in prostate cancer. Another putative metastasis suppressor gene has been mapped to human chromosome 11p11.2 and has been designated KAI1 (Dong et al. 1995). KAI1 expression is significantly reduced in human CaP cell lines derived from metastatic foci (PC-3, LNCaP, TSU-PR1, and DU145). The retinoblastoma susceptibility gene (RB1) is located on 13q14. About one-third of prostate cancers exhibit LOH at this locus (Cher et al. 1996; Cooney et al. 1996). Chromosome 16q contains the E-cadherin locus. E-cadherin is required for normal calcium-mediated cell-cell adhesion. Its expression is frequently lost in high grade, androgen-independent prostate cancers associated with invasive and metastatic potential (Umbas et al. 1994, 1992). Recent studies suggest that there is a separate region of 40% loss at 16q24 that may contain another important tumor suppressor gene (Cher et al. 1996). Over 50% of prostate cancers analyzed demonstrate allelic loss of at least one locus on chromosome 17q which contains the BRCA1 gene (Gao et al. 1995). Finally, the p53 tumor suppressor gene is located on 17p and is known to be mutated in 20–25% of metastatic prostate cancers (Cher et al. 1996). Of note, PC3 is a p53 negative prostate cancer cell line (Rajah et al. 1997). Regions of gain contain dominant oncogenes whose expression is amplified with increased copy number. The epidermal growth factor receptor (erbB-1) is located on chromosome 7p (Cher et al. 1996). Chromosome 7 trisomy is associated with higher grade and advanced-stage prostate cancers (Bandyk et

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al. 1994; Alcaraz et al. 1994). The c-met oncogene maps to chromosome 7q31 and is amplified in 40% of metastatic and androgen-independent prostate cancers (Pisters et al. 1995). Chromosome 8q24 harbors the cMyc oncogene. Of note, CGH analysis suggest the presence of a potentially important oncogene at 8q21.3 (Cher et al. 1996). The H-ras oncogene is located at 11p15.5. CGH analysis indicates a gain in the region of chromosome 17q that includes BRCA1 (Cher et al. 1996). In contrast, the PCR-based analysis conducted by Gao and associates (1995) noted a frequent loss of LOH at that locus. The erbB-2 oncogene is located at 17q12 (Kuhn et al. 1993). Chromosome Xq12 contains the androgen receptor gene which demonstrates a significant degree of amplification in patients with tumor recurrence following protracted androgen ablative therapy (Cher et al. 1996). Increased frequency of gains in the region 4q25-28 is a prominent feature of prostate cancer developing in African-Americans (Cher et al. 1996). It is theorized that a gene at that locus may be increased in activity and responsible for the more rapid rate of disease progression demonstrated in this cohort (Pienta et al. 1995; Brawn et al. 1993). The existing human CaP cell lines have been incompletely characterized with respect to many of the recently described genomic alterations. Understandably, most of the recent molecular studies have targeted fresh or archival prostate cancer specimens. Of interest, Konig and associates (1989) performed a cytogenetic characterization of several androgen-responsive and unresponsive sublines of LNCaP. The hormone-responsive sublines did not show any aberrations in chromosome 8. In contrast, the unresponsive sublines showed rearrangement of the short arm of chromosome 8, resulting in deletion of the 8p23→pter region. Thus, partial deletion of the 8p region may be linked with the development of androgen-independence.

6.

CROSS CONTAMINATION

In 1974, Okada and Schroder reported the establishment of cell line EB33. The line was derived from a patient who underwent a radical perineal prostatectomy for the treatment of a moderately-differentiated prostate adenocarcinoma. Subsequent reports questioned the origin of this cell line, and indicated contamination with HeLa cells (Kaighn et al. 1979; Peehl, 1994). In 1970, Fraley and associates reported the establishment of cell line MA160. This line was supposedly derived from a spontaneous in vitro neoplastic transformation of human benign prostatic epithelium. This line is also suspect, as it expresses several markers unique to HeLa cells (Nelson-Rees et al. 1974; Webber et al. 1977; Pontes et al. 1979). In 1989 Brothman and associates reported the establishment of cell line PPC-1. That cell line was derived from the prostate of a 67 year old black male with metastatic (bone), poorly-differentiated, prostate cancer. Tissues were

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obtained following transurethral resection. In 1993, Chen reported that the cell line PPC-1 is a clonal derivative of cell line PC-3. The two cell lines share numerous common chromosome characters.

7.

PROSTATE CANCER CELL LINES: UNIQUE FEATURES

The cell lines highlighted in the Tables were derived from patients whose tumors exhibited invasive and/or metastatic capacity. Ideally, these CaP cell lines should manifest some, if not most, of the phenotypes commonly associated with poorly-differentiated prostate cancers. The characteristics include: (1) high Gleason pattern score (Kozlowski and Grayhack, 1996); (2) tetraploid or aneuploid DNA content (Shankey et al. 1993); (3) abnormal cell shape, motility, and negative surface charge (Mohler et al. 1987; Carter and Coffey, 1988); (4) decreased nuclear androgen receptor expression (Trachtenberg and Walsh, 1982); (5) androgen receptor gene mutations (Gaddipati et al. 1994); (6) elaboration of angiogenic peptides (Brawer et al. 1994; Ferrer et al. 1998; Joseph et al. 1997); (7) enhanced expression of urokinase-type plasminogen activator and its receptors (Gaylis et al. 1989; Keer et al. 1991; Kozlowski et al. 1995); (8) aberrant expression of various growth factors, their receptors, and binding proteins (Rajah et al. 1997; Hofer et al. 1991; Fong et al. 1992; Pieterzkowski et al. 1993); (9) p53 mutations (Bookstein et al. 1993; Navone et al. 1993; Henke et al. 1994); (10) inhibition of programmed cell death by upregulation of the bc1-2 gene (McDonnell et al. 1992); (11) decreased tumor cell cohesiveness and increased invasiveness associated with reduced expression of the E-cadherin gene and/or deletion of alpha-catenin (Umbas et al. 1992, 1994; Morton et al. 1993; Frixen and Nagamine, 1993); (12) enhanced tumor motility due to up-regulation of thymosin beta 15 (Bao et al. 1996); (13) increased endothelin expression (Nelson et al. 1996); (14) elevated levels of TGF-b1 (Thompson et al. 1993; Eastham et al. 1995); (15) loss of expression of TGF-b1 type I and/or type II receptors (Kim et al. 1996a,b,c; Guo and Kyprianou, 1998); (16) increased interleukin-6 expression (Twillie et al. 1995; Okamoto et al. 1997); (17) decreased expression of neutral endopeptidase 24.11 (Papandreou et al. 1998); (18) preferential adhesion to human bone marrow endothelial cells (Lehr and Pienta, 1998); (19) loss of cyclin-dependent kinase inhibitor p27Kip1 (Tsihlias et al. 1998); and (20) the genomic alterations (losses and gains) characteristic of advanced-stage prostate cancers (see previous section). Dahiya and associates (1996) investigated the mRNA expression of a variety of growth factors (TGF- a, TGF-b1, TGF-b2, TGF-b3, KGF, EGF) and selected growth factor receptors (EGF-R and KGF-R) using a panel of CaP cell lines using RT-PCR. They demonstrated that the human primary CaP line

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(ND-1) showed mRNA transcripts for all growth factors except EGF and KGF. In contrast, LNCaP, DU-145, and PC-3 express mRNA transcripts for all growth factors except KGE KGF-R mRNA was absent in the PC-3 cell line, but present in the others. PC-3 has also been shown to constitutively produce large quantities of TGF- a, and the exaggerated production of that growth factor correlates with aberrant autocrine/ paracrine growth (Hofer et al. 1991). Under normal circumstances, TGF-b is a negative growth regulator that has been postulated to play a role in the control of prostate growth as a result of its ability to inhibit cell proliferation and induce programmed cell death (Thompson 1990; Martikainen et al. 1990; Kyprianou and Isaacs, 1989). These biological responses are mediated via interaction with two major cell surface receptors (type I and type 11) which belong to the serine-threonine kinase family (Lin et al. 1992; Wrana et al. 1994; Franzen et al. 1994). Once bound to TGF-β1 receptor type II, TGF-b1 can recruit receptor type I to form a ternary complex. The cyclin-dependent kinase inhibitors p151NK4, p21WAF-1/CiP and p27Kip1 are postulated as downstream effectors for the intracellular transduction of TGF-b negative growth signals (Guo and Kyprianou, 1998). Prostate cancer is associated with dysfunctional TGF-b signaling, primarily due to loss of TGF- b receptors (Kim et al. 1996 a, b, c; Lamm et al. 1998). PC-3, TSUPR1, and DU-145 express high mRNA levels of both TGF-b type I and type II receptors. In contrast, LNCaP (which is refractory to the growth inhibitory effects of TGF-b1) appears to be receptor deficient. With respect to the latter, controversy exists as to whether receptor type I (Kim et al. 1996a) or type II (Guo and Kyprianou, 1998) is missing in LNCaP cells. TSU-PR1 cells, although they express both TGF-b receptors, are growth stimulated rather than inhibited by TGF-b1 (Lamm et al. 1998). IL-6 is a pleiotropic cytokine whose expression is up-regulated in many prostate cancers (Twillie et al. 1995). Cell lines DU-145 and PC-3 synthesize and release interleukin-6 into the conditioned medium in far greater quantities than LNCaP (Okamoto et al. 1997). These studies also suggest that interleukin-6 functions as a paracrine growth factor for LNCaP and as an autocrine growth factor for DU-145 and PC-3. IL6 expression appears to correlate with an aggressive phenotype. The CaP cell lines have been used to study the mechanisms underlying the coordinated loss of androgen regulation of vascular endothelial cell growth factor (VEGF) expression, which is associated with the progression of prostate cancer to an androgen-independent state. VEGF is constitutively expressed and up-regulated in TSU-PR1, PC-3 and DU-145 by cellular hypoxia, but not by androgens. In contrast, VEGF levels are regulated by androgen in LNCaP and androgen ablation induces growth inhibition in LNCaP xenografts and produces a greater than 60% reduction in tumor VEGF levels (Joseph et al. 1997).

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These cell lines have also assisted in the evaluation of novel therapies. For example, TSU-PR1, LNCaP, PC-3 and DU-145 all demonstrate preferential adhesion to human bone marrow endothelial cells compared with human umbilical vein endothelial cells (Lehr and Pienta, 1998). Adhesion is inhibited in a dose-dependent manner by the galactose-containing carbohydrate modified citrus pectin. Modified citrus pectin has also been shown to have an antiproliferative effect on JCA-1 cells in vitro, which may be correlated with downregulation of cyclin B (Hsieh and Wu, 1995). The existing CaP cell lines have facilitated the evaluation of other novel therapies. For example, LNCaP cells are sensitive to tumor necrosis factor (TNF), while JCA-1 and PC-3 are TNF-resistant (Nakamima et al. 1996). The sensitivity of LNCaP to TNF can be blocked by the overexpression of sulfated glycoprotein-2 (clusterin) by stable transfection. The latter observation reaffirms the hypothesis that clusterin depletion, rather than its expression, is intimately linked with apoptosis (Sensibar et al. 1995). The synthetic retinoid 4-HPR induces a significant reduction of JCA-1 proliferation in vitro (Hsieh et al. 1995). In contrast, all-trans retinoic acid has a biphasic effect on the proliferation of LNCaP cells (low concentrations stimulate; high concentrations inhibit). Of importance, PSA secretory activity is increased at those concentrations of all-trans retinoic acid that inhibit proliferation (Fong et al. 1993). This dichotomy has obvious clinical implications and mandates caution with respect to the interpretation of serum PSA levels in patients receiving differentiation-inducing therapy. JCA-1 fails to express detectable numbers of nuclear vitamin D receptors (VDR) and does not demonstrate growth inhibition in the presence of lα, 25-dihydroxy vitamin-D3 (Hedlund et al. 1996). In contrast, the ALVA-31 cell line possesses abundant VDR and exhibits growth inhibition in the presence of vitamin-D3. Finally, epidermal receptor monoclonal antibody inhibits constitutive receptor phosphorylation, reduces autonomous growth, and sensitizes PC-3 and DU-145 cells to TNF-a (Fong et al.1992).

8.

XENOGRAFTS

For many years, xenografting of human prostate cancers into immune deficient animals was a rare event and serial transplantation was rarely possible (Shankey and Fogh, 1979). More recent observations have revealed that the growth and metastasis of human tumors implanted into nude mice is not a rare event (Kozlowski et al. 1984a,b; Kozlowski et al. 1988). In fact, this animal model can be used with great success for the propagation, expansion and in vivo selection of aggressive subpopulations (Kozlowski et al. 1988). Successful xenografting is contingent on a number of factors, including (1) the harvesting of high-grade primary tumors or metastatic foci; (2) prompt tissue acquisition

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and processing, (3) the use of young 4-6 week old athymic nude or Scid mice; (4) housing the animals in Specific Pathogen Free conditions to minimize immunogenic stimulation; (5) the use of viable finely minced tumor fragments embedded in Matrigel and deposited subcutaneously overlying the anterior aspect of the lateral thoracic wall; (6) the use of tumor cell suspensions coinjected with Matrigel into orthotopic sites; (7) the use of a large tumor inoculum; (8) prolonged experimental duration; (9) hormonal supplementation; and (10) the detailed characterization of the resulting xenograft to validate that it has maintained the features characteristic of the human tumor of origin (Kozlowski et al. 1988; Lim et al. 1992) . In 1980 Hoehn and associates established the transplantable human CaP line designated PC-82. The original tumor was a moderately differentiated adenocarcinoma of the prostate and was obtained following radical perineal prostatectomy. Tumor fragments were implanted subcutaneously into nude mice of the Balb/c background. This cell line exhibits a slow growth rate, hormone dependence, castration-induced regression, and the ability to secrete prostatic acid phosphatase (van Steenbrugge et al. 1984). Ito and Nakazato (1984) established the serially transplantable human CaP line designated HONDA. The patient was a 46 year old Japanese man with obstructive voiding symptoms and a hard nodule in the right lobe of the prostate. His serum AP levels were markedly elevated, strongly suggesting the presence of an invasive or metastatic tumor. He was initially placed on diethylstilbestrol but showed only transient improvement. Ultimately he developed bilateral testicular enlargement and orchidectomy was performed. Histologic analysis of the testes showed a moderately-differentiated adenocarcinoma. PSA immunohistochemistry confirmed prostatic origin. Tumor fragments were implanted in the right flank region of athymic nude mice. The tumor expressed high levels of PAP and PSA. Like PC-82, Honda exhibits androgen-dependence and castration-induced regression. Of note, electron microscopy demonstrated particles resembling type A retroviruses in the endoplasmic reticulum and particles resembling type C retroviruses in the intercellular space of the tumor cells. Pretlow and associates (1993) established the CWR22 transplantable xenograft. The primary prostate tumor that gave rise to CWR22 had a Gleason pattern score of 9. That patient also had evidence of skeletal metastasis. The tumor was minced finely to fragments that would pass through a 16 gauge needle and was mixed with Matrigel. Subcutaneous injections were administered to 4–8 week old male nude mice. Sustained release testosterone pellets were also utilized. After androgen withdrawal, CWR22 regresses and PSA levels drop accordingly. Some animals demonstrate tumor relapse, in which case the PSA starts to rise after approximately 2–7 months and the tumor begins to grow 3–10 months following castration (Nagabhushan et al. 1996). Studies of mRNA from the androgen-dependent CWR22 variant demonstrated the

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expression of PSA, erbB1, erbB2/neu, erbB3, and the neu differentiation factor (Wainstein et al. 1994). Ellis and associates (1996) established the androgen-sensitive, PSAproducing CaP xenograft designated LuCaP23. The patient was a 63-year-old Caucasian male with a stage D1 prostate cancer that exhibited a Gleason pattern score of 3+5. The patient underwent external beam radiation, androgen ablation, and cytotoxic chemotherapy. At death, the patient’s serum PSA level was about 8000 ng/ml. A sterile autopsy was performed within 2 hours of death. The xenograft designated LuCaP23.1 was derived from a lymph node metastasis. Tissue fragments were implanted subcutaneously in 6-week old male athymic mice. Following androgen deprivation, there is a temporary decrease in PSA secretion and tumor size. Ultimately, the tumors become androgen-independent and grow in the castrate host. Analysis of the hormoneindependent tumors demonstrates that they express neuron-specific enolase, which is a characteristic of neuroendocrine differentiation (Liu et al. 1996). In addition the hormone-independent tumors express bc1-2, which inhibits programmed cell death (Liu et al. 1996). With respect to the unselected cell line, castration is associated with an increase in the number of apoptotic cells and a decrease in proliferative activity. The androgen-independent variant which develops following castration demonstrates a low apoptotic index with no increase in proliferative activity. This latter observation may be related to amplified bc1-2 expression (Bladou et al. 1996). Comparative genomic hybridization and molecular cytogenetic characterization of LuCaP23.1 reveals a gain of all or part of chromosomes 3, 5, 6, 7, 8, 11, 12, and the X chromosome. It also exhibits loss of all or part of chromosomes 2,3,6,8,9,10, 17 and 18 (Williams et al. 1997). Finally, several less well-characterized xenograft models have been reported in the literature. Hoehn and associates (1984) report the establishment of the androgen-dependent PC-EW xenograft model. In 1996 van Weerdern and associates reported the development of 7 new CaP tumor xenograft models. The tumors designated PC-295, PC-310, PC-329, and PC-346 are androgendependent. The PC-324, PC-339, and PC-374 are androgen-independent.

ACKNOWLEDGMENT The authors wish to express their gratitude to Lisa-Marie Johnson for her invaluable assistance in the preparation of this manuscript.

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Chapter 32 Liver Cancer

Masayoshi Namba, Masahiro Miyazaki and Kenichi Fukaya Institute of Cellular and Molecular Biology, Okayama University Medical School, 2-5-1 Shikata, Okayama 700-8558, Japan. Tel: 0081-86-235-7393; Fax: 0081-86-235- 7400; E-mail: [email protected]

1.

INTRODUCTION

Primary liver cancers are of two types: hepatocellular carcinoma (HCC) which originates from liver parenchymal cells (hepatocytes) and cholangioma, derived from intrahepatic biliary epithelial cells. HCC is one of the major malignant diseases of the world, being responsible for about one million deaths per year (Okuda et al. 1993). The causative factors associated with liver cancer development remain elusive. Epidemiological and experimental data suggest that infection with hepatitis B or C virus (HBV, HCV), ingestion of aflatoxin B1 (AFB1)-contaminated foods, alcoholic cirrhosis, and other factors associated with chronic inflammatory and hepatic regenerative changes are important risk factors for hepatocarcinogenesis (Hsu et al. 1993). However, which oncogenes or tumor suppressor genes are critical for hepatocarcinogenesis is unresolved (Lea 1993).

2.

CELL CULTURE

Since the first human hepatoma cell line (HLE) was described (Doi et al. 1975), about 40 other HCC lines have been established (Table 1). Amongst these, HLE, PLC/PRF/5, HepG2, Hep3B, HuH-6, and HuH-7 (Miyazaki and Namba 1994), are widely used. Human cholangioma cell lines are listed in Table 2.

J.R.W Masters and B. Palsson (eds.), Human Cell Culture Vol. II, 333–343. ©1999 KIuwer Academic Publishers. Printed in Great Britain.

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Table 1 Human hepatocellular carcinoma cell lines Cell line

Patient age/sex

Pathology & TNM category

HLE* HLF* HuH-6*

68 yr/M 68 yr/M 1 yr/M

C-Hc-4

45yr/M

HCC (undifferentiated) HCC (undifferentiated) Hepatoblastoma (well-differentiated) M1 (lung & brain) HCC

C-Hc-20

30yr/M 24 yr/M 15 yr/M 8 yr/M

PLC/PRF5*,** HepG2** Hep3B**

53yr/M 51 yr/M 57 yr/M 52yr/M 34 yr/M 76 yr/M 53yr/M 50yr/M 63 yr/M 50yr/M 57yr/M 51 yr/M 50yr/M 57yr/F

Culture method

liver liver liver

DMEM+ 10% FBS DMEM+10% FBS DMEM+ 10% FBS

liver

RPMI-1640+20% FBS, HB101, HB102 RPMI-1640+10% FBS DMEM+ 10% FBS DMEM+ 10% FBS DMEM+ 10% FBS

liver liver & lung liver liver liver liver liver liver liver liver liver liver liver liver ascites liver liver liver

References Doi et al. 1975 Doi et al. 1975 Doi 1976 Sasaki et al. 1988 Human Cell 1: 106,1988 Alexander et al. 1976 Aden et al. 1979 Aden et al. 1979

Huh et al. 1981 DM-160+15% FBS DM-160+15% FBS Huh et al. 1981 Nakabayashi et al. 1982 DMEM+ 10% FBS DMEM+10% FBS +2mM glutamine Chang et al. 1983 DMEM+10% FBS +2mM glutamine Hu et al. 1986 RPMI-1640+10% FBS Watanabe et al. 1983 HB101 Murakami 1984 Ham’s F-12+10% FBS Matsuura 1983 DMEM+ 10% FBS Nohara 1987 DMEM+ 10% FBS He et al. 1984 Homma 1985 Williams’ E+ 10% FBS Homma 1985 Williams’ E+ 10% FBS Homma 1985 Williams’ E+ 10% FBS Williams’ E+10% FBS Human Cell: 117, 1988 Williams’ E+ 10% FBS Human Cell: 117, 1988 Continued on next page

Namba et al

huH-1 huH-4 HuH-7* HA22T/VGH HA47T/VGH HCC-M KIM-1 KG55T HH2 FOCUS JHH- 1 * JHH-2* JHH-4* JHH-5* JHH-6*

HCC HCC, M1 (lung) Hepatoblastoma HCC (well-differentiated trabecular) M1 (lung) HCC HCC HCC (well-differentiated) HCC HCC HCC (well-differentiated, trabecular) HCC (well-differentiated, trabecular) HCC HCC HCC (poorly differentiated) HCC HCC HCC HCC HCC

Specimen site

(continued)

Cell line

Patient age/sex

Pathology & TNM category

Specimen site

KYN-1

58 yr/M

HCC (well-differentiated trabecular)

liver

Hep-Tabata HPT-NT/D3

60 yr/M 85yr/F

HCC HCC

liver peripheral blood

KYN-2 Tong/HCC

52 yr/M 59 yr/M

HCC (pleomorphic) HCC

liver liver

TH-1 OHR HCC-T JHH-7* PLC/AN/2

2 yr/M 4 mo/M 69 yr/M 53 yr/M 55 yr/M

liver ascites liver liver liver

HAK-1A HAK-1B RBHF-1

55yr/M 55 yr/M 67 yr/M

Hepatoblastoma, T3N0M0 Hepatoblastoma (poorly differentiated) HCC (well-differentiated, trabecular) HCC HCC (well-differentiated, trabecular & tubular) HCC HCC HCC (pleomorphic)

liver liver liver

Culture method

References

HB101 + 1mM pyruvate, +400 µg/ml Yano et al. 1986 glutamine, DMEM+ 10% FBS Human Cell: 119,1988 DM170+ 10% FBS DMEM+10% FBS +5 µg/ml insulin, Human Cell: 112, 1988 +20 ngiml dexamethasone +5 µg/ml transferrin +20 ng/ml EGF Serum free medium Human Cell: 115, 1988 DMEM/Hams F12, + 1% FBS Stevenson et al. 1987 +25 ngiml EGF +5 µg/ml transferrin, +5 µg/ml insulin +20 ngiml hydrocortisone +6.6 ngiml selenic acid + 10 ngiml liver cell growth factor +500 ngiml glucagon, +674 ng/ml ornithine DM-160+15% FBS Yaoita et al. 1989 Kanno et al. 1989 DMEM+ 10% FBS Saito et al. 1989 RPMI-1640+10% FBS Williams’ E+ 10% FBS Homma et al. 1990 Bagnarelli et al. 1990 RPMI-1640+20% FBS DMEM+5% FBS DMEM + 5% FBS RPMI-1640+10% FBS

Liver Cancer

Table 1

Yano et al. 1993 Yano et al. 1993 Sing et al. 1994

*These cell lines are available from HSRRB in Osaka Branch of NIHS, 1-1-43 Hoen-Zaka, Chuo-ku, Osaka, 540, Japan, Fax:+81-6-945-2872. **These cell lines are available from ATCC, 12301 Parklawn Drive, Rockville, MD 20852, USA.

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Cell line

Patient age/sex

Pathology Adenoca

HChol-Y 1

Specimen site Autopsy specimen of primary liver adenoca Ascites

Culture method Ham’s F12±0.1% FBS Williams’ E + 10% FBS

oz

71/M

CHGS

72/M

Well-differentiated papillary adenoca and poorly differentiated adenoca Tubular adenoca of common bile duct

HUH-28

37/F

Undifferentiated cholangioma

Primary cholangiocellular ca

RPMI-1640/Ham’s F12 (1:1) + 10% FBS RPMI-1640 t 10% FBS

HuCC-T1

56/M

Ascites

RPMI-1640 + 10% FBS

KMBC

73/M

Mod differentiated adenoca in the intrahepatic biliary tree Extrahepatic bile duct ca

Surgically resected tumor

DMEM + 5% FBS

KMC-1

62/M

Cholangiocellular ca

DMEM + 5% FBS

CC-SW-1

55/F

Mod differentiated adenoca

Surgically resected cholangiocellular ca tissue from periphery of tumor Surgically resected liver tumor

DMEM + 5-15% FBS

CC-LP-1

48/F

Mod-poorly differentiated adenoca

Surgically resected liver tumor

DMEM + 5-15% FBS

Primary cholangiocellular ca

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Table 2 Human cholangioma cell lines References Yamaguchi N et al. JNCI 75: 29, 1985 Nagamori et al. Jikeikai Med J 32: 289,1985 Katoh H et al. Human Cell 1: 101, 1988 Kusaka Y et al. Res Exp Med 188: 367,1988 Miyagiwa et al. In Vitro 25: 503,1989 Yano H et al. Cancer 69: 1664, 1992 Iemura A et al. J Hepatol 15: 288,1992 Shimizu Cancer Shimizu Cancer

Y et al. Int J 52: 252,1992 Y et al. Int J 52: 252,1992

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HepG2 and HUH-7 cells show liver-specific differentiated phenotypes in culture (Ding et al. 1994; Lea 1993; Nakabayashi et al. 1982). HUH-7, HUH-6 and PLC/PRF/5 cell lines can grow in serum-free media with some supplements (Nakabayashi et al. 1982), which has made it easier to detect which proteins these cultured liver cells are producing. Establishing long-term cultures of human liver cancer cells is not easy by conventional culture methods because the culture media and methods available may not be suitable, and the cancer cells may have a finite replicative lifespan. A high proportion of human liver cancers are infected with hepatitis viruses such as HBV and HCV. Therefore, special caution should be taken when handling primary cultures.

3.

CHARACTERISTICS OF LIVER CANCER CELLS IN CULTURE

Cultured liver cancer cells retain several differentiated features of hepatocytes (Table 3), including the expression of a-fetoprotein, albumin, transferrin, hemopexin, a1-antitrypsin, a2-macroglobulin, glucose-6-phosphatase, cytokeratin 18, urea cycle-related enzymes, tyrosine aminotransferase, alanine aminotransferase, g-glutamyl transferase, phosphoenolpyruvate carboxykinase, aldolase-B and apolipoprotein (Lea 1993). Some of these differentiated features can be induced by sodium butyrate, dimethylsulfoxide, hexamethylene bisacetamide and retinoic acid (Lea 1993). These liver cell-specific differentiated features are often used to confirm a derivation from liver cells. Production of albumin and a-fetoprotein are the markers most frequently used. However, markers such as these cannot exclude cross-contamination. To solve this problem, DNA fingerprints and isozymes of each HCC and cells from the patient should be analyzed. This has rarely been done in the past, but it should be done in the future. HepG2 cells have measurable activity of the 1A2, 2A6, 2B7, 2E1, 2F1 and 3A5 forms of cytochrome P450 (Lea 1993). Because many drugs are metabolized by these enzymes, this cell line is useful for toxicological studies. Other HCC lines tested so far have no activity of any P450 enzymes.

4.

HEPATITIS VIRUS

As shown in Table 4, hepatitis B surface antigen (HBsAg) and X antigen have been detected in PLC/PRF/5, Hep3B, HB611, huH 1, huH 2 and huH 4 by PCR (Hsu et al. 1993; Knowles et al. 1980). Integration of the HBV genome has also been reported in PLC/PRF/S, Hep3B and JHH-7 cells (Homma et al.

Cell line

Take in nude mouse

Doubling time (h)

Chromosome distribution (mode)

HLE* HLF HuH-6* cHc-4 PLC/PRF/5 * HepG2* Hep3B huH-1 huH-4 HUH-7*

+, mod diffd ND +, poorly diffd + , poorly diffd +, poorly diffd – + ND ND +

34 53 48 20 35–48 49 ND ND ND 36

40–100 hypertetraploid 40–90 hypotriploid hypotriploid (56) heteroploid (55) heteroploid (60) heteroploid (69) heteroploid (70)

HA22T/VGH HCC-M KIM-1 KG55T FOCUS JHH- 1 * JHH-2 JHH-4 JHH-5 JHH-6

+ +, Edmondson type III +, trabecular – t + , poorly diffd ND ND ND ND

ND 24 60 50–60 42-48 44-50 150 55 78 ND

hypertriploid (73) hypotriploid (63) hypertriploid (79) triploid (69) 61-70 hypertetraploid (95) hypertriploid (70) hypertriploid (75)

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Table 3 Characteristics of human hepatocellular carcinoma cell lines Liver specific AFP(+) ® (–) AFP(–) AFP, AL AFP, CEA AFP(–) AAG, AAT, AFP, AL, AMG, BLP, C3, C4, CP, FN, HP, PL, TF AAG, AAT, AFP, AL, AMG, BLP, C3, C4, CP, FN, HP, PL, TF TAT AAT, AFP, AMG, BLP, BMG, C3, C4, CEA, CP, FIB, FN, G6Pase, HP, HX, PRE, TF AAT, AL, ALT, AMG, BLP, C3, C4, CP, GGT, HP, PL, TAT, TF AL, G6PDH: type B, AFP(–), HBsAg(-) AFP, BMG, TF AL, AAT, AMG, TAT AFP, AST, ATT, CEA, FIB, G6Pase ALP, CEA, GGT, LDH, AL(-) AFP(–) AL, ALP, FER, GGT, LDH, AFP(–) AFP, AL, GGT LDH AFP, AL FER

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Continued on next page

Liver Cancer

Table 3 (continued) Cell line

Take in nude mouse

Doubling time (h)

Chromosome distribution (mode)

Liver specific

JHH-7 KYN-1 Tong/HCC HCC-T PLC/AN/2 HAK- 1A HAK-1B RBHF-1

+ +, adenoca – +, Edmondson type II ND – + –

26 31 50 24 26 27 20 24

hypertriploid (74) 61-74 hypotriploid (64) hypotriploid (64) hyperdiploid (57) hypodiploid (41) hypertriploid (78) hypodiploid (45)

AFP, AL, CEA, FER AAT, AFP, AL, BMG, CEA, FER, HBcAg(–), HBsAg(–) AAT, AFP, AL, AMG, CP', PL, Integration of HBV DNA AFP, AL(-), HBsAg(-), HBeAg(–) AAT, AL, ALT, AST, FN, G6Pase, Hexokinase AFP(-), CEA(–) AAG, AAT, AL, C3, C4, FN, AFP(-) AAT, AL, C3, C4, FN, PRE, AFP(-), Prothrombin AL, AFP, ALT, AMG, AST, FN, LDH

*Pu et al. 1997. AAG: a1-acid glycoprotein, AAT a1-antitrypsin, AFP: a -fetoprotein, AL: albumin, ALP: alkaline phosphatase, ALT: alanine aminotransferase, AMG: a 2-macroglobulin, AST aspartate aminotransferase, BLP: b-lipoprotein, BMG: b2,-microglobulin, C3 and C4: Complement component, 3 and 4, CEA carcinoembryonic antigen, CP: ceruloplasmin, FER ferritin, FIB: fibrinogen, FN: fibronectin, G6Pase: glucose 6-phosphatase, G6PDH: glucose-6-phosphate dehydrogenase, GGT g -glutamyltransferase, HP: haptoglobin, HX: hemopexin, LDH: lactic acid dehydrogenase, ND: not described, PL plasminogen, PRE: prealbumin, TAT tyrosine aminotransferase, TF. transferrin.

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Table 4 Genetic features of human hepatoma cell lines Cell line

Genetic features

HLE*

p53 codon 249 position 3 G→C, HBV(–), no ras mutation, no expression of Rb, p16 & p15: normal p53 codon 244 position 2 G→ C, HBV(–), no expression of Rb, p16 & p15: normal wild type p53, HBV(–), no ras mutation p53 codon 220 position 2 A →G, HBsAg(–), no ras mutation, mutant Rb, p16 & p15: normal wild type p53, no ras mutation, HBsAg(–) mutant p53, HBsAg(–) mutant pS3, HBsAg(–) mutant p53 mutant p53 wild type p53, integration of HBV DNA p53 codon 249 position 3 G →T, integration of HBsAg, no ras mutation, normal Rb, p16 & p15: normal, G6PDH: type A, rearrangements of chromosome 1 wild type p53, HBsAg( +), rearrangements of chromosome 1 wild type p53, N-ras codon 61 position 2 A →T, HBV(–), mutant Rb, p16 & p15: normal, rearrangements of chromosome 1 wild type p53, HBsAg( +), rearrangements of chromosome 1 wild type p53, HBsAg( +) p53 deletion of 18 bases (codon 264 to codon 270), HBsAg( +) wild type p53, HBV( +) HBsAg(–), rearrangements of chromosome 1 mutant p53: codon 242 position 2 G→A hemochromatosis, HBV(–), HVC(–), deletion of the long arm of chromosome 1

HLF HuH-6* HUH-7 JHH-1* JHH-2* JHH-4* JHH-5* JHH-6* JHH-7* PLC/PRF/S* Hep3B HepG2* huH 1 huH 2 huH 4 HB611 HA22T/VGH HAK-1A & -lB RBHF-1

*The status of p53 and other genetic characteristics have been described (Tsuji et al. 1998; Pu et al. 1997)

1990; Marion et al. 1980; Twist et al. 1981). However, there is no description of HBV or HCV virus production in the continuous HCC cell lines.

5.

HEPATOCYTE GROWTH FACTOR

Hepatocyte growth factor (HGF) is an important regulator of liver regeneration in response to injury (Nakamura et al. 1984). In addition, HGF is a potent mitogen for mature hepatocytes in vitro (Nakamura et al. 1987). Thus, HGF appears to be a likely candidate for autocrine stimulation of HCC. However, treatment of HCC (HepG2, Hep3B and HuH-7 cell lines) with HGF produced a marked inhibition of cell growth (Shiota et al. 1992). In contrast, the growth of HuH-6 cells was enhanced by treatment with HGF (Miyazaki et al. 1992), although expression of met, the receptor of HGF, was detectable in HuH-6 cells at the same level as HepG2 cells (unpublished data).

Liver Cancer

6.

341

TUMOR SUPPRESSOR GENES AND ONCOGENES

Mutations in the p53 tumor suppressor gene are associated with increasing histological grade and early recurrence, suggesting that defective p53 function is significant and confers increased clinical aggression (Hayashi et al. 1995). The finding of p53 mutations in a number of HCCs suggests that hepatocellular transformation is linked to the loss of both the structural and functional integrity of p53 (Hsu et al. 1993). Amongst the HCC cell lines, no significant associations were observed between the pattern of p53 and Rb changes and the extent of differentiation of the cell lines (Kaino 1997). About 70% of HCC do not show any p53 abnormalities (Oda et al. 1992). However, dysfunctional p53 is probably more common in HCC than is appreciated from standard genetic screens of the hotspot regions. As shown in Table 4, seven (HLE, HUH-7, PLC/PRF/5, JHH-2, -4, -5, and -6) out of 12 human hepatic cell cancer cell lines examined using the FASAY method showed p53 mutations (Tsuji et al. 1998). The hepatitis B virus-encoded X antigen (HBxAg) heterodimerizes with and inactivates wild-type p53 in vitro and in vivo (Wang et al. 1994). Thus, p53 mutation may not be necessary for hepatocarcinogenesis, although a low frequency of p53 mutations in HBxAg-positive HCCs has been reported (Greenblatt et al. 1997). Exposure to aflatoxin B1 (AFB1) is associated with a characteristic point mutation in p53 (Liang 1995), and almost all of the mutations in AFB1-associated tumors are G:C to T:A transversions at codon 249 (AGG to AGT), changing arginine to serine (Hsu et al. 1991; Greenblatt et al. 1994). These findings indicate that p53 dysfunction may play an important role in hepatocarcinogenesis, but it is not known at which stage the p53 dysfunction is important. To address this question, a mouse model of targeted disruption of the p53 gene will be useful (Bellamy et al. 1997). The status of other oncogenes, such as c-erbB-2, fos, jun, myc, raf, ras and Rb has been described (Lea 1993), but critical gene changes in HCC remain to be identified.

7.

CROSS CONTAMINATION

In 1954, a human liver cell line was established from normal human liver tissue and called the Chang liver cell line (Chang 1954). Later it was found to be cross-contaminated with the HeLa cell line (Gey et al. 1952; Lavappa 1978; Nelson-Rees et al. 1981).

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REFERENCES Aden DP, Fogel A, Plotkin S et al. Nature 282: 615, 1979. Alexander JJ, Bey EM, Geddes EW et al. S Afr Med J 50: 2124, 1976. Bagnarelli P, Devescovi G, Manzin A et al. Hepatology 11: 1024, 1990. Bellamy COC, Clarke AR, Wyllie AH et al. FASEB J 11: 591, 1997. Chang RS. Proc Soc Exp Biol 87: 440,1954. Chang, C, Lin Y, 0-Lee T et al. Mol Cell Biol 3: 1133,1983. Ding S-F, Michail NE, Habib NA. J Hepatol 20: 672, 1994. Doi I. Gann 67: 1, 1976. Doi I, Namba M, Sato J. Gann 66: 385,1975. Gey GO, Cofman WO, Kubicek MT Cancer Res 12: 264,1952. Greenblatt MS, Feitelson MA, Zhu M et al. Cancer Res 57: 426, 1997. Greenblatt MS, Bennett WP, Hollstein M. Cancer Res 55: 4855, 1994. Harris CC. Carcinogenesis 17: 1187,1996. Hayashi H, Sugio K, Matsumata T et al. Hepatology 22: 1702,1995. He L, Isselbacher KJ, Wands JR et al. In Vitro 20: 493, 1984. Homma S. Jikeikai Med J 32: 289,1985. Homma S, Nagamori S, Fujise K et al. Human Cell 3: 152, 1990. Hsu IC, Metcalf RA, Sun T et al. Nature 350: 427, 1991. Hsu IC, Tokiwa T, Bennett W. Carcinogenesis 14: 987,1993. Hu CP, Han SH, Lui WY et al. Hepatology 6: 1396,1986. Huh N and Utakoji T Gann 72: 178, 1981. Kaino M. J Gastroenterol 32: 40, 1997. Kanno S, Tsunoda Y, Shibusawa M et al. Human Cell 2: 211,1989. Knowles BB, Howe CC, Aden DP. Science 209: 497,1980. Lavappa KS. In Vitro 14: 469,1978. Lea MA. Int J Biochem 25: 457,1993. Liang TJ. Hepatology 22 1330, 1995. Lin YM, Hu CP, Chou CK et al. Chung Hua Min Kuo Wei Sheng Wu Chi Mien I Hsueh Tsa Chih 15: 193, 1982. Marion PL, Salazar FH, Alexander JJ et al. J Virol 33: 795, 1980. Matsuura H. Acta Med Okayama 37: 341,1983. Miyazaki M, Gohda E, Tsuboi S et al. Cell Biol Int Rep 16: 145,1992. Miyazaki M and Namba M, In Atlas of Human Tumor Cell Lines, eds. RJ Hay et al. Academic Press, 1994, pp. 185-212. Murakami T. Acta Hepatol Jap 25: 532, 1984. Nakabayashi H, Taketa K, Miyano K et al. Cancer Res 42: 3858, 1982. Nakamura T, Nawa K, Ichihara A. Biochem Biophys Res Commun 122: 1450,1984. Nakamura T, Nawa K, Ichihara A et al. FEBS Lett 224: 311,1987. Nelson-Rees WS, Daniels DW, Flandermeyer RR. Science 212: 446,1981. Nohara T. Gastroenterol Jpn 22: 722, 1987. Oda T, Tsuda H, Scarpa A et al. Cancer Res 52: 6358,1992. Okuda K, Kojiro M, Okuda H. in Diseases of the Liver, Lippincott, 1993, p. 1244. Pu H, Tsuji T, Kondo A et al. Acta Med Okayama 51: 313, 1997. Saito H, Morizane T, Watanabe T et al. Cancer 64: 1054, 1989. Sasaki F, Kameda H, Hata Y et al. Human Cell 1: 89,1988. Shiota G, Rhoads DB, Wang TC et al. Proc Natl Acad Sci USA 89: 373, 1992. Sing GK, Pace R, Prior S et al. Hepatology 20: 74,1994. Stevenson D, Lin JH, Tong MJ et al. Hepatology 7: 1291,1987.

Liver Cancer Tsuji T, Miyazaki M, Fushimi K et al. Biochem Biophys Res Commun 242:317, 1998. Twist EM, Clark HF, Aden DP et al. J Virol 37: 239, 1981. Wang XW, Forrester K, Yeh H et al. Proc NatlAcad Sci USA 91: 2230, 1994. Watanabe T, Morizane T, Tsuchimoto K et al. Int J Cancer 32: 141,1983. Yano H, Kojiro M, Nakashima T. In Vitro Cell Dev Biol 22 631,1986. Yano H, Iemura A, Fukuda K et al. Hepatology 18: 320, 1993. Yaoita S, Ohoi R, Hayashi Y et al. Human Cell 2: 201, 1989.

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Chapter 33 Wilms’ Tumor and Other Childhood Renal Neoplasms

Noel A. Brownlee, Gian G. Re and Debra J. Hazen-Martin Department of Pathology and Laboratoiy Medicine, Medical University of South Carolina, 171 Ashley Avenue, Charleston, South Carolina 29425. Tel: 001-843-792-4557; Fax: 001-843792-4157; E-mail: [email protected]

1.

INTRODUCTION

Renal tumors are one of the most common intra-abdominal neoplasms of early childhood and cover a wide clinical and histological spectrum (1). Because these tumors are diagnosed from infancy through the first several years of life, they are likely to represent pathologies of normal kidney morphogenesis (2). However, the relationships between these childhood renal tumors remains unresolved. The development of a well-characterized cell culture-based model system has been and will continue to be beneficial in delineating both pathological mechanisms in tumors and the biological features of normal nephrogenesis.

1.1

Wilms’ Tumor

Wilms’ tumor, or nephroblastoma, is one of the most common solid tumors of childhood, affecting 1 in 10,000 children, usually within the first five years of life. The term Wilms’ tumor has been employed in the past to describe a wide clinical spectrum of childhood renal tumors. The National Wilms’ Tumor Study recognizes several histologically and clinically distinct renal tumors of childhood (3). By far the most common of these tumors is the classical or triphasic Wilms’ tumor which comprises 80% of all pediatric renal malignancies. This tumor is composed of heterogeneous elements which may

J.R. W Masters and B. Palsson (eds.), Human Cell Culture Vol. II, 345–359. © 1999 Kluwer Academic Publishers. Printed in Great Britain.

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include, in different combinations, immature renal blastema, stroma, and epithelial elements. These three cell types recapitulate structures visible in the developing fetal kidney, a feature that underscores pediatric renal tumors as a developmental aberrancy. While the triphasic Wilms’ tumor is generally curable with combination therapy, tumors with features of anaplasia (particularly those demonstrating diffuse anaplasia) are characterized by increased resistance to standard therapy and, therefore, an increased incidence of recurrence and metastasis (4). Approximately 5% of Wilms’ tumors contain anaplastic cells, a feature hypothesized to represent tumor progression (5).

1.2

Congenital Mesoblastic Nephroma

Congenital mesoblastic nephroma (CMN) is a benign tumor of neonates first delineated from Wilms’ tumor in the late 1960s (6,7). Two subtypes of this tumor have been described based on histological appearance and comprise 5% of all childhood kidney tumors. The cellular or atypical variant is composed of closely apposed cells with a high mitotic index and may recur if resection is incomplete. The classical variant of the tumor histologically resembles a uterine leiomyoma. Both variants are hypothesized to be derived from renal stroma.

1.3

Clear Cell Sarcoma and Malignant Rhabdoid Tumor

Clear cell sarcoma of the kidney (CCSK) and the malignant rhabdoid tumor of the kidney (RTK) were demarcated from Wilms’ tumor in the late 1970s and early 1980s (8). Together these tumors comprise only 7% of all cases, but contribute to the majority of treatment failures and deaths. CCSK specimens demonstrate varying histological features, but primarily include cells with a high nuclear-cytoplasmic ratio, nuclei with scant heterochromatin, the feature responsible for the ‘clear cell’ designation, and an array of anastomosing blood vessels. This tumor also tends to metastasize to the bone (9). RTK cells are characterized cytologically by prominent nucleoli and intracytoplasmic vimentin whorls. Rhabdoid tumors may also occur in extrarenal sites such as the liver, neck, heart and thymus (10). Children with this tumor fare poorly and usually die with widespread metastases (11). The histogenesis of these tumors is unresolved. However, it has been speculated that the CCSK and MRTK are derived from pluripotent renal mesenchymal cells and neuroectodermal cells, respectively (12,13).

1.4

Derivation and Molecular Genetics

The etiology of Wilms’ tumor is unresolved. However, classical Wilms’ tumors have been associated with nephrogenic rests, areas of immature renal tissue that are hypothesized to represent genetic precursors to Wilms’ tumor

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(14). This tumor type has also been associated with several genetic syndromes including the WAGR complex (Wilms’ tumor, aniridia, genitourinary abnormalities and mental retardation), Beckwith-Wiedemann syndrome, and the Denys-Drash syndrome (15). Neither nephrogenic rests nor these genetic syndromes have been associated with the other renal tumors of childhood. The molecular genetic etiology of Wilms’ tumor is complex and is undoubtedly dependent upon numerous genetic abnormalities (16). Deletion or mutation of the WT-1 gene locus at chromosome 11p13 has been hypothesized to represent the key genetic lesion in Wilms’ tumors, but abnormalities of this gene are limited to only 10% of all cases (17). Mutations, deletions, and expression abnormalities of a variety of other genes have been described and include the fetal mitogen insulin-like growth factor-II and the cyclindependent kinase inhibitor p57KIP2, both localized to chromosome 11p15 (18), mutations of the p53 tumor suppressor gene at chromosome 17p13 in anaplastic tumors (19,20), and loss of heterozygosity of chromosomes 1p36 and 16q (21). Linkage studies have also identified familial Wilms’ tumor loci on chromosomes 17 and 19 (22,23). The genetic factors leading to the development of anaplastic Wilms’ tumors, CMN, CCSK, and the RTK are even more enigmatic due to the rarity of these tumor types. Therefore, the genetic relationships between these tumors and Wilms’ tumor remain unresolved.

2.

CELL CULTURE

Past attempts to develop an in vitro model for the study of Wilms’ tumor achieved mixed success. Cell cultures were established from several animal sources as reviewed by Hard (24). The first successful establishment of a nonhuman Wilms’ tumor culture using Wistar rats was reported in 1967 (25). Others have reported the development of two porcine Wilms’ tumor cell cultures that were successfully propagated to passage 45 (26). In addition, the carcinogen dimethylnitrosamine was used to induce rat renal mesenchymal tumors which histologically resemble CMN and CCSK and established fibroblast-like cultures (27). The first report of a Wilms’ tumor cell culture derived from a human source occurred in 1957. This culture, designated CCRF-6, was characterized by cells growing in a pavement-like monolayer with an ‘epithelioid’ appearance (28). Dobrynin later established another human culture, TuWi, described as having an epithelial morphology (29). TuWi cells also grew as mouse heterotransplants, even though the histology of the resulting xenografted tumor failed to demonstrate the features of a Wilms’ tumor. TuWi cells were maintained by the American Type Culture Collection (ATCC) until evidence arose which indicated that these cells had been cross-contaminated with HeLa cells. More recently, Fogh described the development of two additional Wilms’ tumor cell

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lines: SK-NEP-1 and Wiltu-1 (30). Wiltu-1 was characterized as a fibroblastoid culture whereas SK-NEP-1 cells, derived from a pleural effusion of a Wilms’ tumor patient, were epithelial-like and grew in suspension. SK-NEP-1 cells (also known as HTB-48) are also available from the ATCC. Unlike TuWi cells, SK-NEP-1 cells maintained the cytomorphological features of Wilms’ tumor upon nude mouse heterotransplantation (31). The ATCC also maintains the G401 cell line (CRL-1441) that has been used extensively in the study of Wilms’ tumorigenesis (32,33). More recent cell and molecular biological examination of this cell line has demonstrated that these tumor cells may be derived from a RTK, not a classical Wilms’ tumor (34). In addition to G401 and SK-NEP-1 cells, the ATCC also has available four additional Wilms’ tumor cell lines: TE79.T (CRL-7733), TE138.T (CRL-7946), Hs794.T (CRL-7887), and Hs775.T (CRL-7504). The latter four cell lines were originally developed at the Naval Biosciences Laboratory (Oakland, California) and later transferred to the ATCC. No cell lines are available from commercial sources for CMN and CCSK even though successful cultures of both tumors have been established and reported previously (35,36). Several additional renal rhabdoid tumor cell lines have been established and include: RTK, also designated RTlK(37,40), STM9101 derived from a metastatic lung lesion (38), and SWT1 and SWT-2 (39). More recently, additional CMN, CCSK, and RTK cell lines have been developed and well-characterized (40,41). Further molecular characterization of these cell cultures will be necessary in order to evaluate their relationship with the corresponding primary tumors. We have cultured the blastema, epithelium, and anaplastic epithelium of Wilms’ tumor (42–44). In addition, the development of a Wilms’ tumor culture with evidence of skeletal muscle differentiation was described (45). The RM1 (or W4) culture, derived from an anaplastic Wilms’ tumor that later metastasized and killed the patient, has been used in the evaluation of WT-1 splice variants (46) and is a p53 null cell line which overexpresses the MDR-1 gene (20,47). The propagation of human Wilms’ tumors in nude mice has also provided additional tissue with which to initiate cell culture (48). Nude mouse heterotransplantation of tumor often provides a continuing supply of fresh tumor tissue for extraction of nucleic acid and protein, in vivo experimentation, and cell culture use. Establishment and successful propagation of eight Wilms’ tumor xenografts has been previously reported (48). In this study, primary Wilms’ tumor xenografts maintained the histological composition of the primary tumor. With serial passage of these tumors, the epithelial and stromal components of triphasic Wilms’ tumors were eventually lost. One xenografted anaplastic tumor, used to initiate the W4 anaplastic culture, retained the histologic features of the primary tumor. Neither anaplastic progression of the xenografted classical Wilms’ tumors nor metastasis have been reported. Cells in culture may also be used to establish xenografts. Both anaplastic Wilms’ tumor cultures, W4 and W16, CMN-1, and rhabdoid

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tumor cultures may be used to establish xenografts. This method has been reported previously (34).

2.1

Primary Culture

Different approaches to developing cultures from triphasic Wilms’ tumor have been attempted. Successful culture of the heterogeneous cellular components of Wilms’ tumor through the use of dissociation and gradient centrifugation have been reported previously (49). Cell cultures with both stromal and epithelial characteristics were derived using Percoll gradient centrifugation. Successful subculture and propagation of the different elements of Wilms’ tumor were not described in this study, however. Alternatively, differential media formulations may be employed to select for the growth of the different components of Wilms’ tumor. The latter method has proven to be successful in both the establishment of primary culture and continued subculture. This method will be described below. Cell cultures of pediatric renal tumors may be established using either dissociated or explanted, primary or heterotransplanted tumor tissue. The appropriate procedure to use depends on the consistency of the tissue. Classical and anaplastic Wilms’ tumor, cellular CMN, and RTK tumors are generally very friable and may be dissociated using collagenase, or simply minced finely and placed directly into a culture flask. Wilms’ tumors, classical CMN, and CCSK specimens that are composed predominantly of stromal-like cells are generally more difficult to dissociate and may require direct explant of tissue fragments into the culture dish. The optimal substrate material for the successful propagation of primary pediatric renal tumor cell cultures appears to be type I collagen (Collagen Corporation, Palo Alto, California) with adsorbed fetal calf serum proteins (42,43). Type IV collagen, laminin, and tissue culture flask plastic alone are generally not suitable for the growth of these tumor cells. However, the more aggressive tumors, which include the RTK and anaplastic tumors, may not require a type I collagen coated substrate for growth and will grow on plastic alone. Before manipulation, tumor tissue is maintained in chilled 15% v/v fetal calf serum in Dulbecco’s modified Eagle’s medium (DMEM). The specimen may then be cut into small pieces (approximately 1 mm3) and explanted directly into tissue culture flasks (Note: turn flask upside down for 15–20 minutes before adding medium in order to enhance attachment). Alternatively, tissue may be dissociated within a sterile trypsinizing flask containing prewarmed (37°C) Hank’s Balanced Salt Solution (HBSS) with collagenase (1.4 mg/ml) and deoxyribonuclease (1.0 mg/ml), hereafter referred to as dissociation medium. Both collagenase and deoxyribonuclease are available from Sigma Chemical Company (St. Louis, Missouri). Enough dissociation medium should be placed in the trypsinizing flask to cover both stir bar and tissue fragments. The flask

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is then placed on a stir plate within a 37°C water bath for 15 minutes. This step may be repeated depending upon the consistency of the tumor specimen. Dissociated cells are then poured through a fabric filter (90µm mesh diameter) into a 50 ml centrifuge tube. The filter should be washed two times with HBSS to bring the filtrate volume in the centrifuge tube to 50ml. The cell suspension should be centrifuged at 1000 RPM for 10 minutes. The resulting cell pellet may be resuspended in growth medium and aliquoted into tissue culture flasks. Cultures are then incubated at 37°C in a 95% air/5% CO2 incubator. If cells have attached to the substrate after 24 hours, the cultures may be agitated in order to remove cellular debris and replenished with fresh growth medium. Medium should be exchanged with fresh medium three times weekly. Cell subculture is achieved by washing the attached cells twice with phosphate buffered saline (PBS) followed by the addition of 1.0ml of 0.05% trypsin/0.02% EDTA (appropriate for a 25cm2 flask). Both PBS and trypsin should be warmed to 37°C before use. Trypsin may be inactivated by adding an equal volume of fetal calf serum to the cell suspension. The cell suspension is then centrifuged at 1000rpm before being dispersed among additional tissue culture flasks. Primary pediatric renal tumor cell cultures have been propagated in both serum-containing and serum-free growth medium. Either DMEM or a 1:1 mixture of DMEM and Hams F12 (F12), with serum or growth factors, respectively, has been used for the successful initiation of pediatric renal tumor cell cultures. The use of the serum-free DMEM-F12 mixture with growth factors to propagate renal tumor cells was based on its previously described success in the long-term culture of normal kidney epithelium (50) and was especially useful in the culture of a predominantly epithelial Wilms’ tumor (43). In the latter study, serum-free DMEM-F12 was supplemented with the following (values represent final concentration): insulin (5 µg/ml), transferrin (5 µg/ml), selenium (5ng/ml), hydrocortisone (36ng/ml), and triiodothyronine (4pg/ml), and epidermal growth factor (10 ng/ml). The latter media formulation has been employed to successfully culture blastemal components of Wilms’ tumor with the addition of putrescine (10 ng/ml), bovine pituitary extract (30 µg/ml), prostaglandin El (10 nglml), and ethanolamine (1.2 µg/ml). Tumors with stromal characteristics (i.e. stromal predominant Wilms tumor, congenital mesoblastic nephroma, and clear cell sarcoma) have been grown successfully in DMEM-F12 with insulin, transferrin, selenium, hydrocortisone, triiodothyronine (concentrations as those previously noted; this medium formulation hereafter referred to as minimal DME-F12), and either 2%, 10%, or 20% (v/v) fetal calf serum. Malignant rhabdoid tumors grow readily in 2% (v/v) fetal calf serum in minimal DMEM-F12. The ATCC has described the use of several different types of media for its commercially available cell lines. These include 10% (v/v) fetal calf serum in either McCoys 5a, DMEM, or minimal essential media (Eagle) in Earle’s

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balanced salt solution with non-essential amino acids. Further information regarding ATCC cell lines may be obtained on-line at www.atcc.org. Cultures derived from pediatric renal tumor tissue propagated in nude mice have been established for many of the cell lines listed in Table 1. Although tumor tissue maintained in nude mice provides a valuable continuing resource of tumor tissue, cultures that are established using this method will need to be evaluated for mouse fibroblast contamination. This can be achieved by performing chromosomal analysis of the cultures. Acrocentric mouse chromosomes are easily discriminated from human chromosomes providing an easy and direct method of assessing contamination.

3.

DO THE CELL LINES AVAILABLE REFLECT THE CLINICAL SPECTRUM OF DISEASE?

Pediatric renal tumors cover a wide clinico-pathologic spectrum. A representative sample of pediatric renal tumor cell cultures that were developed in this laboratory, the ATCC and the Naval Biosciences Laboratory are listed in Table 1. With the exception of the RTK cell line G401, the Wilms’ tumor cell lines maintained by the ATCC have not been well characterized with regard to evaluating the extent of similarity between the derived culture and the respective primary tumor.

3.1

Classical Wilms’ Tumor

The collection of classical Wilms’ tumors included in Table 1 illustrates the variety of clinical behaviors exhibited by this tumor type. Non-anaplastic, blastemal-predominant Wilms’ tumors are potentially aggressive (51) even though success with the culture of blastemal-predominant Wilms’ tumors in this laboratory has been mixed. For example, the W13 cell culture was derived from a blastemal-predominant tumor which had metastasized to the liver upon initial diagnosis. Blastemal cells of the W13 culture grow very rapidly and may be used to initiate nude mouse heterotransplants. The heterotransplant tissue is then used to initiate subsequent cultures. The W13 culture was derived from a patient who died four years after treatment. In contrast, primary and metastatic tissue from another blastemal-predominant Wilms’ tumor, W1, failed to grow either in culture or nude mice even though the patient died with metastatic disease (unpublished observations). The W9 culture was derived from a predominantly epithelial Wilms’ tumor that did not harbor anaplastic cells. Heterotransplants of the W9 classical tumor were developed, but cultures from this tissue were blastematous. Only two of eighteen cases of primary classical Wilms’ tumors, one of which was W9, produced an epithelial culture (43).

352

Table 1. Pediatric renal tumor cell lines Tumor Type Wilms’

CMN CCSK RTK

Culture

Patient age

Patient Sex

TNM Categorya

W13 W9 W4 W16 TE79.Te TE138.Te Hs794.Te Hs775.Te SK-NEP-1 CMN-1 CMN-2 CCSK-BG1 CCSK-2 RTK RT2K G401

3 years 2.5 years 3 years 4 years 7 years 2 years 9 months 13 years 25 years 5 months NA 10 months lyear newborn 7 months 3 months

Male Female Male Male Male Male Male Male Female Male NA Male Female Male Female Male

T2,N0,M1 T2,N0,M0 T2,N1,M1 T2,N0,M0 NA NA NA NA NA T2,N0,M0 NA T2,N0,M0 T2,N0,M0 T2,NX,M1 T2,N0,M1 NA

f

Pathologic Stage* IV I IV I NA NA NA NA IV I NA I I IV IV NA

Primary Tumor Site

Culture Methodb

Right Kidney Left Kidney Left Kidney Left Kidney NA NA NA NA NA Right Kidney NA Left Kidney Left Kidney Right Kidney Left Kidney NA

DandX D DandX D and X NA NA NA NA E D andX DandX E D and E D DandX D

Authenticationc Availabilityd Ref. D D D D NA NA NA I D and I D D D D D D D and I

MUSC MUSC MUSC MUSC ATCC ATCC ATCC ATCC ATCC MUSC MUSC MUSC MUSC MUSC MUSC ATCC

Classification published in TNM Classification of Malignant Tumors, 4th Edition, International Union Against Cancer, 1987. D, dissociated; E, explant; X, xenograft. cD, DNA fingerprinting; I, isoenzyme analysis; H, HLA typing; D, Northern analysis of gene expression (i.e. IGF-2,WT-1, etc.) and transmission electron microscopy dMUSC, tumor developed by Department of Pathology and Laboratory Medicine, Medical University of South Carolina; ATCC, Cell line available from American Type Culture Collection. edeveloped by the Naval Biosciences Laboratory (Oakland, California) and deposited at the ATCC. falso designated RT1K in reference 41. * National Wilms’ Tumor Study staging designation. NA, information is not available

55 43 20 20 None None None None 31 40 40 40 40 37 41 34

a

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353

Anaplastic Wilms’Tumor

A small fraction of Wilms’ tumors (5%) demonstrate morphological signs of anaplasia (i.e. cytological features including hyperchromatic nuclei, presence of multipolar mitotic figures, and a threefold increase in nuclear size in comparison to adjacent cells). Anaplastic tumors are uncommon in children younger than two years of age and are associated with a poorer outcome than classical tumors (52). Two anaplastic Wilms’ tumor cell lines have been developed in this laboratory. W4 and W16 cells were derived from a diffusely and focally anaplastic tumor, respectively. The patient from which W4 cells were derived succumbed to widespread metastatic disease whereas patient W16 remains disease free nine years after initial treatment. These observations are consistent with previous reports indicating that those children with diffusely anaplastic tumors fare more poorly than those with focally anaplastic tumors (4). Surprisingly, another Stage IV diffusely anaplastic tumor, derived from a 21 year old female, grows poorly in culture.

3.3

CMN, CCSK and RTK

Before the 1970s, CMN, CCSK, and RTK were classified as Wilms’ tumors. However, closer study has shown that these tumors are clinically, histologically and molecularly distinct neoplasms of childhood (8,53,54). Unlike the cell cultures described above, the congenital mesoblastic nephroma cultures, CMN1 and CMN-2, are composed of interlacing layers of cells with a high mitotic rate and fibroblast-like appearance. The features of these tumors are consistent with that of the cellular variant of this tumor. Although the high mitotic rate of these tumors may be disconcerting, both classical and cellular mesoblastic nephroma are benign neoplasms. CCSK-2 and CCSK-BG1 were derived from Stage I tumors and have been passaged 13 times in culture. In contrast to previous reports describing epithelial differentiation in this tumor type (36), neither nude mouse xenografts nor cell cultures derived from CCSK primary tumors demonstrate evidence of this form of differentiation. Unlike CMN-1, CCSK cells grow relatively slowly in culture. Table 1 also lists two rhabdoid tumor cell lines. G401 cells were long considered Wilms’ tumors until morphological and gene expression analysis demonstrated that this tumor demonstrated rhabdoid features (34). G401, RT2K, and RTK cells contain prominent intracytoplasmic intermediate filaments and large nucleoli (34,37,41). RT2K cells also have the tendency to grow in grape-like clusters that detach from the substrate and float in the media. Both G401 and RT2K cells grow rapidly in culture and readily form nude mouse heterotransplants, features that are consistent with the aggressive clinical behavior of this tumor.

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Other Cell Lines

Most of the cell lines available from the ATCC have not been characterized. The SK-NEP-1 and G401 cells represent an exception. SK-NEP-1 cells were derived from a pleural effusion and are cytologically epithelial. Cells injected into nude mice formed tumors with features of a Wilms’ tumor even though no histological documentation was provided (31). The Stage IV characteristics and hypertriploid karyotype of this tumor suggest that it may be an anaplastic Wilms’ tumor. Further characterization of the ATCC cell lines will be necessary in order to classify them appropriately.

4.

COMPARATIVE PATHOLOGY OF PRIMARY TUMORS, XENOGRAFTS AND CELL CULTURES

4.1

Wilms’ Tumor

Wilms’ tumors and the other renal tumors affecting young children vary with regard to their state of differentiation. However, epithelial elements of the both classical and anaplastic Wilms’ tumors have been shown to retain features of normal renal epithelium (see Table 2). For example, the W9 tumor was found to contain a prominent epithelial component which was subsequently cultured (43). Phase microscopic evaluation of the W9 culture demonstrated the presence of dome formation (a feature indicative of active membrane transport) interspersed among other cells forming a cobblestone-like pattern. In addition, ultrastructural evaluation and freeze-fracture analysis of these cultured cells provided evidence of junctional complexes. W9 cultured cells were also immunoreactive with cytokeratin and epithelial membrane antigen monoclonal antibodies. These features are consistent with the cellular and molecular features of normal tubular epithelial cells. The well-differentiated features of W9 cells contrast with the lack of epithelial polarity and organization of cells derived from the anaplastic tumor W4 (44), even though these cells demonstrate tight cellular opposition and desmosomes which are features of renal epithelial cells. In contrast to the culture of Wilms’ tumor epithelium, the culture of the blastematous component of Wilms’ tumor has proven to be more difficult. The lack of an appreciable number of blastematous cultures has made it difficult to assess the degree of similarity between normal blastema of the developing kidney and the blastematous component of Wilms’ tumor. Previous study has shown that blastema grows in spherical cell clusters with emanating epitheliallike cells (42). Cell cultures derived from another blastemal-predominant Wilms’ tumor, W13, were found to overexpress the fetal mitogen IGF-2, establishing an autocrine growth loop (55). The growth of W13 cells was blocked with the

Tumor type

Culture

Primary tumor pathology

In vitro features

Wilms’

W13

Wilms’ tumor: blastema and stroma

Blastema

W9 W4 W16 SK-NEP1

CMN

TE79.T TE138.T Hs794.T Hs775.T CMN-1

CCSK-2

Clear cell sarcoma of the kidney

RTK

RT1K

Rhabdoid tumor of the kidney

RT2K

Rhabdoid tumor of the kidney

G401

Rhabdoid tumor of the kidney

* descriptions provided by the ATCC

Epithelial,

non-anaplastic

Epithelial, anaplastic Epithelial,

.

anaplastic

Epithelial, growth in suspension* Monolayer* Epithelial* Epithelial * Stromal’ Stromal with high mitotic index Stromal Stromal, relatively slowgrowing Stromal and polygonal cells Rapidly growing spindle and polygonal shaped cells Rapidly growing polygonal cells; cytoplasmic inclusions Epithelioid*

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CCSK-BG1

Wilms’ tumor Wilms’ tumor Wilms’ tumor Wilms’ tumor Congenital mesoblastic nephroma, cellular variant Congenital mesoblastic nephroma, cellular variant Clear cell sarcoma of the kidney

CMN-2 CCSK

Wilms’ tumor: prominent epithelial component, blastema, stroma Anaplastic Wilms’ tumor: blastema and epithelium; diffuse anaplasia Anaplastic Wilms’ tumor: blastema, epithelium, stroma; focal anaplasia Unknown; derived from pleural effusion

Xenograft pathology Pathological features of the primary tumor are retained (currently to passage 70) Pathological features of primary tumor are retained (growth cessation at passage 20) Cystic nodules with prominent papillary-like anaplastic epithelium (passaged > 100 times) Pathological features of primary tumor are retained (currently to passage 85) Tumors contain small cells consistent with Wilms’ tumor NA NA NA NA Pathological features of primary tumor are retained (currently to passage 93) Pathological features of primary tumor are retained (currently to passage 56) Pathological features of primary tumor are retained (currently to passage 2) Pathological features of primary tumor are retained (currently to passage 4) Pathological features of primary tumor are retained (passaged 50 times) Pathological features of primary tumor are retained (currently to passage 60) Rounded, eosinophilic cells consistent with rhabdoid tumor

Wilms' Tumor and Other Childhood Renal Neoplasms

Table 2. Comparative pathology of primary tumor, xenografts and cell cultures

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Brownlee et al.

use of an antibody directed against the IGF-2 cognate receptor, the insulinlike growth factor I receptor. High levels of IGF-2 expression are also a common feature of developing renal tissue, particularly renal blastema (56). Therefore, W13 cells recapitulate the IGF-2 gene expression profile of the normal, developing renal blastema.

4.2

CMN, CCSK and RTK

Cell cultures of CMN, CCSK, and RTK maintain features that are consistent with their respective primary tumors. Cultures of CMN-1 contain cells with a fibroblastic appearance (likely primitive renal interstitial cells) that grow in multiple, overlying sheets with a high mitotic index, all features of cellular CMN. CMN-1 cells may also be used to establish nude mouse heterotransplants that retain the histological features of the primary tumor (40). CCSK-2 and CCSK-BG1 cultures contain cells growing in two to three sheets with a fibroblastic appearance. In contrast to CMN-1 cells, these cells are slower growing. Light microscopic evaluation of CCSK-BG1 cells demonstrates cells with a single, small nucleolus, a characteristic finding in CCSK primary tumors. G401, RT2K, and RTK cultures contain cells with prominent inclusion-like nucleoli and intracytoplasmic intermediate filaments. These cultures may also be used to initiate nude mouse heterotransplants. Relating CCSK and RTK cells back to a corresponding normal kidney cell remains difficult as the cell of origin for both tumors is not known. However, G401 cells were previously reported to be immunoreactive with monoclonal cytokeratin antibodies, a feature supportive of epithelial differentiation (34).

5.

MOLECULAR GENETICS

A variety of genetic alterations, including gross chromosomal abnormalities and mutations (see Table 3), have been described in pediatric renal tumor specimens (16). Overexpression of IGF-2 is a common feature of Wilms’ tumors (57).The blastemal cell culture W13 has been shown to overexpress the IGF-2 gene creating an autocrine growth loop mediated through the IGF-1 receptor (55). In addition, WT-1 was found to regulate the transcription of both the IGF-2 and IGF-1 receptor genes in transfection experiments (58,59). Interestingly, the WT-1 tumor suppressor is not mutated or deleted in this tumor type. Therefore, the W13 cell line would provide a model to use in the evaluation of other means of WT-1 inactivation and the control of IGF-2 and IGF-1 receptor gene expression in this tumor type. In addition, the W13 cell line would provide a model for the evaluation of new drugs which target components of the IGF2 autocrine growth loop.

Wilms’ Tumor and Other Childhood Renal Neoplasms

357

Table 3. Summary of genetic abnormalities in pediatric renal tumor cell cultures Genetic alterations/gene expression/gene overexpression WT-1 mutation p53 mutation IGF-II overexpression MDR-1 overexpression N-myc expression c-myc expression chromosome 22q LOHd

Cell lines demonstrating genetic alteration/gene expression profile* W4a W4b, W16c W13,CMN- 1 W4 W4 RTK (akaRT1K), RT2K, G401 RT2K

Reference 46 20 40,55 47 44 37,41 41

* Except for G401, the molecular biological features of the ATCC cell lines remain uncharacterized. de12 variant, exon 2 of WT-1 is spliced out. b homozygous mutant cheterozygous point mutation in codon 273 dLOH = loss of heterozygosity a

In several studies, mutation of the p53 tumor suppressor gene was a frequent finding in anaplastic Wilms’ tumors (19,20). Two anaplastic Wilms’ tumor cell lines developed within this laboratory harbor p53 mutations (20). The W4 culture is a p53 null cell line whereas W16 cells are mutant at the p53 gene locus. WT-1 mutant W4 cells have also been used in studies that assess the role of WT-1 splice variants in tumor suppression (46). Cell cultures of CMN, CCSK, and RTK will be useful in understanding of the relationship between these tumors and Wilms’ tumors. Since CMN and CCSK are likely representative of an abnormality in the developing renal stroma, both cell lines may be useful in the study of normal stromagenesis, a facet of normal kidney development that remains uncharacterized. The use of rhabdoid tumor cell lines has already proven to be useful in the narrowing of a rhabdoid tumor suppressor locus on chromosome 22 and in understanding the histogenesis of these rare tumor types (60,61). G401 cells, in particular, will be useful in further characterizing the rhabdoid loci on chromosomes 11 and 22 affected by the translocation t(11;22)(p15.5;q11.23).

6.

CROSS -CONTAMINATION

Neither ATCC Wilms’ tumor nor pediatric renal tumor cell lines developed within this laboratory demonstrate evidence of cross-contamination with other cell lines, mycoplasma, or viruses. TuWi is cross-contaminated with HeLa cells.

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7.

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CELL LINES WITH SPECIAL FEATURES

W4 and W16 are both anaplastic Wilms’ tumor cell lines with p53 mutations. W4 cells do not demonstrate nuclear reactivity with p53 monoclonal antibodies, presumably due to the production of a labile truncated p53 protein. In contrast, W16 cells do demonstrate strong nuclear reactivity with p53 monclonal antibodies. In addition to being a p53 null cell line, W4 cells also overexpress MDR-1, a gene which encodes the ATP-dependent cell membrane bound ‘pump’ which actively extrudes chemotherapeutic agents from the cytoplasm (47). Pglycoprotein function was inhibited by the addition of the calcium channelblocker verapamil in in vitro toxicity experiments using W4 cells. Two cell lines depend upon an IGF-2 autocrine growth loop. W13 cell growth is inhibited by the addition of the polysulfonated naphthyl urea compound, suramin, in both in vitro and in vivo experiments (55). CMN-1 cells, another rapidly growing cell line, are also sensitive to treatment with suramin andaIR3, a monoclonal antibody specific for the IGF-1 receptor (unpublished observation). Conditioned media derived from G401 cultures appears to contain nephroblast growth factor, a protein that appears to be necessary for the primary culture of nephroblasts (33).

REFERENCES 1. Parham DM. Pediatic Neoplasia: Morphology and Biology. Lippincott-Raven, New York, 1996. 2. Gonzalez-Crussi F. Wilms’ Tumor (Nephroblastoma) and Related Renal Neoplasms of Childhood. CRC Press. Boca Raton, Florida, 1984. 3. Murphy WM et al. Atlas of Tumor Pathology: Tumors of the Kidney, Bladder, and Related Urinary Structures. Third series, Fascicle 11, Armed Forces Institute of Pathology, Washington, DC. 4. Faria P et al. American Journal of Surgical Pathology 20: 909, 1996. 5. Re GG et al. Seminars in Diagnostic Pathology 11: 126, 1994. 6. Bolande RP et al. Pediatrics 40: 272, 1967. 7. Wigger HJ et al. American Journal of Clinical Pathology 51: 323, 1969. 8. Beckwith JB et al. Cancer 41: 1937, 1978. 9. Sotelo-Avilia C et al. Human Pathology 16: 1219, 1985. 10. Fisher HP et al. Pathology Research & Practice 184: 541, 1989. 11. Weeks DA et al. American Journal of Surgical Pathology 13: 439, 1989. 12. Haas JE et al. Cancer 54: 2978,1984. 13. Haas JE et al. Human Pathology 12: 646,1981. 14. Park S et al. Nature Genetics 5: 363, 1993. 15. Clericuzio CL et al. Medical Pediatric Oncology 21: 182, 1993. 16. Pritchard-Jones K et al. Lancet 349: 663, 1997. 17. Grundy P et al. Hematology Oncology Clinics of North America 9: 1157, 1995. 18. Feinberg AP et al. Medical Pediatric Oncology 27: 484, 1996. 19. Bardeesy N et al. Nature Genetics 7: 91, 1994.

Wilms’ Tumor and Other Childhood Renal Neoplasms 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 53. 54. 55. 56. 57. 58. 59. 60. 61.

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El-Bahtimi R et al. Modern Pathology 9: 238, 1996. Grundy PE et al. Cancer Research 54: 2331, 1994. Rahman N et al. Nature Genetics 13: 461, 1996. McDonald JM et al. Cancer Research 58: 1387, 1998. Hard GC. Tumor Biology: In Vitro Culture and Transplantation Models of Wilms’ Tumor. In: Wilms’ Tumor Clinical and Biological Manifestations, Pochedly C and Baum E editors, Elsevier, 1984. Babcock VI et al. Proceedings Society Experimental Biology and Medicine 124: 217, 1967. Pirtle EC et al. American Journal of Veterinay Research 31: 1601, 1970. Hard GC et al. Journal of the National Cancer Institute 54: 1085, 1975. Foley GE et al. Annals New York Academy of Science 76: 506, 1958. Dobrynin YV et al. Journal National Cancer Institute 31: 1173, 1963. Fogh J. National Cancer Institute Monograph 49: 5, 1978. Fogh J et al. Journal National Cancer Institute 59: 221, 1977. Weissman BE et al. Science 236: 175, 1987. Burrow CR et al. Proceedings National Academy of Sciences USA 90: 6066, 1993. Garvin AJ et al. American Journal of Pathology 142: 375, 1993. Nuss D et al. Journal Pediatric Surgery 15: 297, 1980. Ishii E et al. Cancer Research 49: 5392, 1989. Gansler T et al. Human Pathology 22(3): 259, 1991. Ota S et al. Cancer 71: 2862, 1993. Hirose M et al. International Journal of Cancer 67: 218, 1996. Brownlee NA et al. in preparation. Rosson GB et al. Modern Pathology, submitted. Garvin AJ et al. American Journal of Pathology 129: 353,1987. Hazen-Martin DJ et al. American Journal of Pathology 142: 893,1993. Hazen-Martin DJ et al. American Journal of Pathology 144: 1023, 1994. Sens MA et al. Archives of Pathology and Laboratory Medicine 108:58, 1984. Haber DA et al. Science 262: 2057, 1993. Re GG et al. Modern Pathology 10: 129, 1997. Garvin AJ et al. Pediatric Pathology 8: 599, 1988. Velasco S et al. International Journal of Cancer 53: 672, 1993. Detrisac CJ et al. Kidney International 25: 383, 1984. Beckwith JB et al. Medical Pediatric Oncology 27: 422, 1996. Bonadio JF et al. Journal Clinical Oncology 3: 513, 1985. Tomlison GE et al. Cancer 70: 2358, 1992. Yun K. American Journal of Pathology 142: 39, 1993. Vincent TS et al. Cancer Letters 103: 49, 1996. Scott J et al. Nature 365: 764, 1985. Reeve AE et al. Nature 317: 258, 1985. Nichols KE et al. Cancer Research 55: 4540, 1995. Werner H et al. Proceedings National Academy of Sciences USA 90: 5828,1993. Biegel JA et al. Genes Chromosomes Cancer 16: 94, 1996. Ota S et al. Cancer 71: 2862, 1993.

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Chapter 34 Retinoblastoma

Brenda L. Gallie1, Judy Trogadis2 and Liping Han1 Ontario Cancer Institute, University Health Network, 610 University Ave., Toronto M5G 2M9, Canada. Tel: 001-416-946-2324; Fax: 001 -416-813-8883; E-mail: [email protected] and [email protected] and 2Vision Science Research Program, Toronto Western Hospital Research Institute, 399 Bathurst St., Toronto M5T 2S8, Canada. Tel: 001 -416-6035088; Fax: 001-416-603-5126; E-mail: judy@playfair:utoronto.ca 1

1.

INTRODUCTION

Studies of the rare embryonic cancer of the retina, retinoblastoma, have contributed fundamentally to the understanding of human cancer. The clinical distribution of tumors in predisposed children led to the concept of tumor suppressor genes (Knudson, 1971). Proof of this concept was obtained by molecular genetic studies of retinoblastoma tumor cell lines and xenografts, that revealed loss of heterozygosity (LOH) at the locus mapped to the inherited predisposition to retinoblastoma (Cavenee et al. 1983; Godbout et al. 1983). A cloned DNA fragment at the RB locus was identified that was totally deleted from one retinoblastoma tumor (Dryja et al. 1986), and was used to clone the RB1 gene (Friend et al. 1986). The RB1 gene (Friend et al. 1986) is mutated in all retinoblastoma tumors, but is also mutated or dysregulated in many human cancers that are not initiated by RB1 mutation. Much of this knowledge was obtained from a few retinoblastoma cell lines. The first and most widely studied cell line, Y79, was the 79th attempt of a group at Yale to establish retinoblastoma in culture (Reid et al. 1974). Y79 and all subsequent established retinoblastoma cell lines grow predominantly in suspension. Intraocular retinoblastoma is never biopsied, since the risk of dissemination is too great. The most successful way to establish retinoblastoma in culture is by first growing the surgical specimen obtained from the enucleated eye as a xenograft in the eyes of athymic nude mice (Gallie et al.

J.R. W Masters and B. Palsson (eds.), Human Cell Culture Vol. II, 361 –374. © 1999 kluwer Academic Publishers. Printed in Great Britain.

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1977), for subsequent passage to tissue culture. Feeder layers also work well to support initial growth of retinoblastomas that subsequently become cell lines (Gallie et al. 1982c). The most aggressive retinoblastomas obtained after therapy fails or derived from metastatic extraocular sites, grow best in vitro. However, retinoblastoma tumors remain very difficult to establish in tissue culture, have a notoriously long doubling time, are almost completely refractory to transfection of DNA, require special conditions to maintain growth in vitro once established, and can rarely be cloned from single cells. The retinoblastoma cell lines available are listed in Table 1 and their characteristics summarized in Table 2.

2.

CULTURE CONDITIONS

Surgical specimens of intraocular retinoblastoma are obtained by opening the enucleated eye as soon as possible after removal. Since more than 50% of the cells in fresh tumor samples are not viable, it is important to obtain the largest possible specimen by opening the unfixed eye along the pupillary-optic nerve axis across the main tumor bulk, which can then be removed without disturbing the tumor-optic nerve relationship for subsequent clinically relevant histological examination. Tumor is immediately placed in tissue culture medium supplemented with serum. Tumor clumps are dispersed simply by vortexing and enzymatic digestion is unnecessary. Retinoblastoma tumor cells prefer to grow at high density (1–5×105/ml) in suspension, adhering to surfaces only under specific conditions (Reid et al. 1974; Gallie et al. 1982c). Several different culture media have been used successfully including RPMI-1640 with 10% FBS, but the best results are obtained with RB Medium: Iscove’s modified Dulbecco’s medium with 15% Fetal Clone III (Hyclone Laboratories, Inc), 10µg/ml insulin, and 55µ M 2mercaptoethanol. Since viable RB cells aggregate and single dead cells remain in suspension, the flasks are gently shaken to liberate dead cells attached in the periphery of the viable clumps. The flask is tilted to one side for a few minutes to allow the viable clumps to settle, then most of the medium containing the dead cells is removed, being careful not to disturb the clumped live cells.

2.1

Feeder Layers

The success of primary culture is increased if the cells are initially placed on a feeder layer prepared from rat smooth muscle cells (Bogenmann and Mark, 1983), human embryonic or murine fibroblasts (Albert et al. 1970; Gallie et al. 1982c; Griegel et al. 1990a,b), retinal pigment epithelium (Weiner et al. 1983) or mouse CB17 bone marrow stromal layers as described by Dexter (Dexter et al.1977).

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363

Table 1 Derivation of retinoblastoma cell lines Name Y79

WERIRBI RB606 RB617 RB1213 RB1238 RB1256 RB1368 RB610 RB430 RB267

Disease type

Availability

Primary reference

Year estab.

First author

unilateral familial

1,2,5

J National Cancer Inst3: 1347–1360: 1974

1974

Reid TW

unilateral

1,5

bilateral unilateral bilateral unilateral unilateral unilateral unilateral unilateral metastatic bilateral

2 2 2 2 2 2 2 2 2

RB302A bilateral

2

RB369

unilateral

2

RB383

unilateral

2

RB381

unilateral

2

RB414

unilateral

2

RB447

unilateral

2

RB247C bilateral

2

RB265

bilateral

2

RB355

unilateral

2

RB412

unilateral

2

RB429R bilateral

2

RB522A bilateral

2

RB405A unilateral

2

RB409

bilateral

2

RB544

unilateral metastatic

2

Cancer Res 37: 1003,1977

Anticancer Res. 9: 469, 1989 Cancer Res. 42: 301,1982 Cancer Res. 42: 301,1982 Cancer Res. 42: 301,1982 Hum Genet 66: 46,1984 Hum Genet 66: 46, 1984 Hum Genet 66: 46,1984 Hum Genet 66: 46,1984 Hum Genet 70: 291,1985 Hum Genet 70: 291,1985 Nature 304: 451, 1983 Nature 304: 451, 1983 Nature 304: 451, 1983 Nature 304: 451, 1983 Nature 304: 451, 1983 Nature 304: 451, 1983 Nature 304: 451, 1983

References

1987 1988 1995 1995 1995 1997 1987 1981

29,14,13,16,43,18, 20,21,22,26,27, 28,30,32,36,40,2, 4,9,11,12,23,6,19 McFall RC 26,25,43,16,12,8, 6,19 Gallie BL Gallie BL Gallie BL 15 Gallie BL Gallie BL Gallie BL Gallie BL Chan SL 6,5,41

1982

Gallie BL

10,33,6,5,41

1982

Gallie BL

10,33,35

1982

Gallie BL

10,33,35

1984

Squire J

1977

1984

Squire J

35,14,13,33,15,6, 34,41 3533

1983

Squire J

35,33

1984

Squire J

35,33,34

1982

Squire J

13,14,15,6,34,5,41

1982

Squire J

33

1982 1982

Godbout R 35,33,13,14,15,34, 6,5,41 Godbout R 12,35,33,6,5,41

1983

Godbout R 12,35,33,6,41

1983

Godbout R 12

1982

Godbout R 35,33,15,34,5,41

1982

Godbout R 42,35,33,6,5,41 Godbout R 12,41 Continued on next page

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Gallie et al.

Table 1 (Continued) Name

Disease type

Availability

RB507

bilateral

0

LA-RB66 bilateral

0

LA-RB1

bilateral

0

LARB59 LARB62 LARB64 LARB65 LA-RB9

unilateral

0

unilateral

0

unilateral

0

unilateral

0

bilateral

0

LA-RB8

unilateral

0

LARB10 LA-RB2

unilateral

0

unilateral

0

LARB13 LA-RB6

unilateral

0

unilateral

0

unilateral

0

unilateral

0

LARB80 LARB81 LARB69 TOTL-1

unilateral

0

unilateral

0

RBL13

unilaeral

0

RBL14

unilateral

0

RBL18

unilateral

0

RBL7

bilateral

0

RBL30

unilateral

0

RBL15

bilateral

0

Primary reference

Year First estab. author

References

Anticancer Res. 9: 469,1989 Cancer Genet Cytogenet 10: 311,1983 Cancer Genet Cytogenet 10: 311,1983 Cancer Genet Cytogenet 10: 311, 1983 Cancer Genet Cytogenet 10: 311,1983 Cancer Genet Cytogenet 10: 311,1983 Cancer Genet Cytogenet 10: 311,1983 Cancer Genet Cytogenet 10: 311,1983 Cancer Genet Cytogenet 10 311,1983 Cancer Genet Cytogenet 10: 311,1983 Cancer Genet Cytogenet 10: 311, 1983 Cancer Genet Cytogenet 10: 311,1983 Cancer Genet Cytogenet 10: 311, 1983 Cancer Genet Cytogenet 10: 311,1983 Cancer Genet Cytogenet 10: 311,1983 Cancer Genet Cytogenet 10: 311,1983 Cell Struct Funct 14: 331,1989 Int J Cancer 46: 125, 1990 Int J Cancer 46: 125, 1990 Int J Cancer 46 125, 1990 Int J Cancer 46: 125, 1990 Int J Cancer 46: 125, 1990 Int J Cancer 46: 125, 1990

1985

6

ChanSL

1983

Benedict WF

1

1983

Benedict WF

1

1983

Benedict WF

1

1983

Benedict WF

1

1983

Benedict WF

1

1983

Benedict WF

1

1983

Benedict WF

1,3

1983

Benedict WF

1

1983

Benedict WF

1

1983

Benedict WF

1

1983

Benedict WF

1

1983

Benedict WF

1

1983

BenedictWF

1

1983

Benedict WF

1

1983

Benedict WF

1,5

1989

Wakabayashi K 36,39

1990

Griegel S

13

1990

Griegel S

13

1990

GriegelS

13

1990

Griegel S

13

1990

Griegel S

13

1990

Griegel S

13

Continued on next page

Retinoblastoma Table 1

365

(Continued) Avail- Primary ability reference

Name

Disease type

RBL20

bilateral

0

WERIRB27

bilateral

0

WERI RB-24

unilateral

0

LA-RB3 bilateral LA-RB14 LA-RB12 RB475 bilateral

0 0 0 0

Int J Cancer 46: 125, 1990 J Pediatr Ophthalmol Strabismus 27: 212, 1990 J Pediatr Ophthalmol Strabismus 27: 212, 1990 JNCI 70: 95, 1983 JNCI 70: 95, 1983 JNCI 70: 95,1983 Nature 322: 555, 1986

Year estab.

First author

1990

Griegel S

13

1990

Sery TW

17,24,38,7

1990

Sery TW

31

Bogenmann E BogenmannE BogenmannE Squire J

44,1 44 44 34

1983 1983 1983 1984

References

Availability: 0 = not available; 1 = American Type Tissue Collection; 2 =Brenda Gallie, Ontario Cancer Institute; 3 =Japanese Collection of Research Bioresources Cellbank; 4 =European Collection of Animal Cell Culture, 5 = Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH; 6 = Cellbank, Russian Academy of Medical Sciences, Moskow; 7 = Instituto Zooprofilafitco Sperimentale, Brescia. References: 1, (Benedict et al. 1983); 2, (Bernard and Klein, 1996); 3, (Bogenmann and Mark, 1983); 4, (Campbell and Chader, 1988a); 5, (Cavenee et al. 1983); 6, (Chan et al. 1989); 7, (Chen et al. 1992); 8, (Cowell et al. 1997); 9, (del Cerro et al. 1992); 10, (Gallie et al. 1982c); 11, (Gallie et al. 1978); 12, (Godbout et al. 1983); 13, (Griegel et al. 1990b); 14, (Griegel et al. 1990a); 15, (Gupta et al. 1996); 16, (Herman et al. 1989); 17, (Huang et al. 1988); 18, (Klaidman et al. 1993); 19, (Kondo et al. 1997); 20, (Koole and Schipper, 1990); 21, (Kyritsis et al. 1986b); 22, (Kyritsis et al. 1986~); 23, (Lee et al. 1984); 24, (Madreperla et al. 1991b); 25, (McFall et al. 1978); 26, (McFall et al. 1977); 27, (Olianas et al. 1992); 28, (Rajagopalan et al. 1993a); 29, (Reid et al. 1974); 30, (Schmidt-Erfurth et al. 1997); 31, (Sery et al. 1990); 32, (Skubitz et al. 1994); 33, (Squire et al. 1985); 34, (Squire et al. 1986); 35, (Squire et al. 1984); 36, (Wakabayashi et al. 1989); 38, (Xu et al. 1991); 39, (Yokoyama et al. 1992); 40, (Zhang et al. 1996); 41, (Zhu et al. 1992); 42, (Godbout et al. 1983); 43, (Jiang et al. 1984); 44, (Bogenmann, 1986)

Since retinoblastoma preferentially metastasizes to bone marrow, bone marrow stromal cells may preferentially provide essential factors. Dexter cultures are prepared from a suspension of mouse femur bone marrow cells cultured at 33°C in 5% CO, in Alpha minimum essential medium supplemented with 20% horse serum and 10-6M hydrocortisone. After 4 weeks, the hematopoietic cells have largely shed into the medium, leaving a bone marrow stromal layer onto which primary retinoblastoma cells can be placed. The culture medium is then changed to RB medium, described above. Initially, the retinoblastoma cells will adhere to the stroma, grow as colonies, and after several weeks to months, move off the feeder layer into suspension. The Dexter feeder layer eventually peels off the plastic surface and the retinoblastoma cells are transferred to a new flask, with or without a feeder layer, depending on their vigour.

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Table 2 In vitro characteristics of retinoblastoma cell lines Name Y79

Growth properties in suspension culture Differentiation

Doubling Cloning MDR time (hours) efficiency % phenotype

Chains, loose clumps Adherent and clumps Loose clumps Tight clumps

Undifferentiated, neuronal 33,36 potential WERIUndifferentiated, neuronal 96,44 RB1 potential RB383 44 RB447 Flexner-Wintersteiner Rosettes RB247C Tight clumps 44 RB355 Adherent and clumps 81 RB412 Loose clumps 44 RB429R Tight clumps 66 RB409 Chains, loose clumps 36 RB507 Tight clumps 66 LA-RB3 Tight clumps Flexner-Wintersteiner Rosettes LATight clumps Flexner-Win tersteiner RB14 Rosettes LA-RB12 Tight clumps Undifferentiated TOTL-1 Tight clumps Neuronal 160

6,40

No

0

No

24

No

Yes Yes Yes Yes Yes No

Abbreviation: MDR phenotype = multidrug resistance phenotype

2.2

Defined Media

Y79 can proliferate or be induced to differentiate in serum-free medium consisting of Dulbecco’s modified Eagle’s medium (DMEM) supplemented with transferrin (10 mg/ml), putrescine (8.8 ng/ml), sodium selenite (5 ng/ml), insulin (5mg/ml), and progesterone (6.3ng/ml) (Rubin et al. 1981).

2.3

Monolayer Culture

Unlike normal cells and many tumor-derived cell lines, retinoblastoma cells do not readily adhere to negatively charged plastic tissue culture flasks to form monolayers, but will adhere to polyornithine coated or poly-D-lysine positively charged, or laminin-coated surfaces, while retaining their original morphology (McFall et al. 1978; Kyritsis et al. 1984; Kyritsis et al. 1986a).

2.4

Cloning

The cloning efficiency of retinoblastoma cell lines in agar, agarose, or methylcellulose is generally very low. Agarose is toxic to both WERI-RB1 and Y79 (Griegel et al. 1990a,b). If aggregates are dispersed mechanically, the single cells either die from the disruption or reform into aggregates before

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367

resuming proliferation. Cloning of Y79 and WERI-RB1 has been reported (Inomata et al. 1986; Rootman et al, 1986).

2.5

Xenograft

Xenografting into the eyes of immune deficient mice is more successful than tissue culture for propagation of primary surgical retinoblastoma specimens (Gallie et al. 1977, 1978), and increases the chance that the tumor will subsequently grow in tissue culture. The established tissue culture cell lines generally take as subcutaneous tumors in SCID mice, but it is rare that a primary specimen will proliferate in this location (Phillips et al. 1989).

3.

DO THE CELL LINES AVAILABLE REPRESENT THE CLINICAL SPECTRUM OF RETINOBLASTOMA ?

In comparison to other types of tumors, there is a very narrow clinical spectrum of intraocular retinoblastoma, the main variation being the degree of differentiation. The least differentiated tumors are established most easily in culture, while the most differentiated are very difficult to establish. The benign or ‘pre-malignant’ retinoma (Gallie et al. 1982b) is the most differentiated and does not proliferate, and has never been grown in tissue culture. Undifferentiated retinoblastoma tumors consist of small, round cells containing little cytoplasm and large hyperchromatic nuclei. The most common differentiated feature is the formation of Flexner Wintersteiner rosettes (Flexner, 1891; Popoff and Ellsworth, 1969), spheres of columnar tumor cells surrounding central lumens. The cells forming a rosette show features of photoreceptor cells when examined by electron microscopy: cilia similar to those that form the outer segment of photoreceptor cells protrude into the lumen from the apical (inner) side, the nucleus is situated on the basal side, and the lumen contains hyaluronic acid, similar to the subretinal space. Occasionally, cells within rosettes have more distinct characteristics of photoreceptor cells, such as polarized shape and stacks of lamellated membranes resembling photoreceptor outer segments (Bogenmann, 1986; Reid et al. 1974). Many intraocular retinoblastoma tumors show extensive apoptosis and necrosis. Pseudo-rosettes are clumps of viable tumor cells surrounding blood vessels, to a depth of 10 to 20 cells, beyond which the tumor is necrotic. When retinoblastoma grows into the vitreous, without a blood supply, the opposite pattern arises: the vitreous seeds have necrotic cores, surrounded by a 10 to 12 cell thick rim of viable cells, nourished by diffusion through the vitreous (Gallie et al. 1990).

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Retinoblastoma cell lines are generally similar to the original tumor specimens. Undifferentiated tumor cells are small, round, with sparse cytoplasm and large hyperchromatic nuclei, and form loose chains and clumps of cells in suspension (Gallie et al. 1990). This phenotype is best represented by Y79 (Reid et al. 1974), by far the most frequently studied retinoblastoma cell line. If the original tumor demonstrated Flexner Wintersteiner rosettes, cells in culture will also form Flexner Wintersteiner rosettes, which roll around in the suspension culture. The central lumen is easily seen through the transparent columnar epithelial wall of the rosette. As the tumor becomes established as a cell line, the ability to form rosettes is generally lost, and the undifferentiated cells take over. Rosette formation can be increased with certain feeder layers (Bogenmann, 1986). Rosette formation in xenografts of retinoblastoma in the eyes of immune deficient mice also correlates with the original tumor histology (Bogenmann, 1986; Gallie et al. 1977, 1990). More differentiated retinoblastoma tumors grow in tight clumps which sometimes grow into balls of cells with necrotic centers, large enough to be easily observed floating in the tissue culture flask (Gallie et al. 1990). Such clumps are very resistant to dispersion, both mechanically and by protease treatment (Sery et al. 1990). Proliferation may cease when large growing clumps are dissociated (Wakabayashi et al. 1989). Growth is maintained by smaller clumps budding off the larger ones. All retinoblastoma lines have a very long doubling time, compared to other types of cultured cells. In general, undifferentiated cells have a faster doubling time than differentiated cells. For example, the doubling time for the most undifferentiated cell line, Y79, is 33 hours, for WERI-Rbl is 96 hours and for the highly differentiated TOTL-1 cells a slow 160 hours (Wakabayashi et al. 1989). Telomerase activity is detected in the large majority of tumors. Telomerase activity associated with short telomeres was, however, observed in only 50% of retinoblastomas and retinoblastoma-derived cell lines, suggesting that telomerase activity may not be a marker for acquisition of the malignant phenotype, at least in the case of this embryonic tumor which is relatively small at the time of excision (Gupta et al. 1996). Retinoblastoma tumors also do not show p53 mutations (Nork et al. 1997; Gallie et al. 1999), and usually have a high fraction of cells undergoing apoptosis.

4.

DO THE CELL LINES AVAILABLE REPRESENT CHARACTERISTICS OF EMBRYONIC RETINA?

Retinoblastoma cell lines express many genes characteristic of neuronal retinal cells, and occasionally express glial markers (Griegel et al. 1990a, 1990b; Kivela and Tarkkanen, 1986; Kivela et al. 1986; Klaidman et al. 1993; Messmer

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et al. 1985; Tso et al. 1970) (Table 3). Retinoblastomas arise from pluripotent, developing retinal precursor cells, which retain the ability to display retinal cell characteristics, depending on culture conditions (Campbell and Chader, 1988a). Studies of retinoblastoma cell lines have provided some information on the potential cell of origin (Albert et al. 1992; Albert et al. 1988; Cohen et al. 1988; Howard et al. 1991; Jiang et al. 1984; Kyritsis et al. 1984; Messmer et al. 1985; Perentes et al. 1987; Shternfeld et al. 1996; Tarlton and Easty, 1993; Virtanen et al. 1988; Yuge et al. 1995) and some important clues about the events that are required for full malignancy subsequent to the loss of both RB1 alleles (Squire et al. 1985). Retinoblastoma cell lines, particularly Y79, have also been used to define the biochemical pathways likely to be operational in the retina. Examples are retinoic acid induction of melatonin pathway genes (Bernard and Klein, 1996), expression of insulin receptors (Saviolakis et al. 1986; Campbell and Chader, 1988b; Yorek et al. 1985), insulin-like growth factor, serotonin and dopamine (Yorek et al. 1987), retinal S-antigen (Donoso et al, 1985; Song et al, 1995; Mirshahi et al, 1986), glial fibrillary associated protein (Craft et al. 1985; Jiang et al. 1984), myelin basic protein (Tsokos et al. 1986), expression of the photoreceptor-specific protein, IRBP (Campbell and Chader, 1988b; Fong et al. 1988; Rodrigues et al. 1987), and interaction with the extracellular matrix attachment molecule, laminin, causing neuron-like differentiation in Y79 cells (Campbell and Chader, 1988b). Interestingly, retinoblastoma tumors express cone-specific transducin (TC) but not rod-specific transducin (TR) (Bogenmann et al. 1988; Hurwitz et al. 1990; Rajagopalan et al. 1993a). Functional binding sites for corticotropin-releasing hormone, a neuropeptide whose function remains unclear, have been found on Y79 cells (Olianas et al. 1992).

5.

MOLECULAR GENETICS

The original studies that identified the RB1 gene utilized retinoblastoma surgical specimens (Friend et al. 1986). Subsequently, retinoblastoma tumors and cell lines confirmed mutation of the RB1 gene (Dunn et al. 1988). Since identification of the individual mutations in this large gene is difficult (Gallie et al. 1995), it is not yet proven that all retinoblastoma tumors contain mutations in RB1, although this is very likely. The common RB1 mutation is a ‘null’ allele, in which the mutation causes premature termination of translation, leading to unstable RB protein and mRNA (Dunn et al. 1989). RB1 mutations that are ‘in frame’ result in a stable RB protein and are usually associated with fewer retinoblastoma tumors, so called ‘low penetrance’ retinoblastoma (Gallie et al. 1995; Lohmann et al. 1994). These observations mean that practical strategies for clinical RB1 mutation identification depend on studying genomic DNA from blood of bilaterally

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affected persons with a presumed germline mutation, and from tumor of unilaterally affected persons without a family history, who have only a 15% risk of a germline RB1 mutation. Sufficient tumor DNA of high quality must be available for a large series of tests, so old samples in paraffin histology specimens may not be adequate. All retinoblastoma tumors have additional mutations, including either the i(6p) specific karyotypic rearrangement, or extra copies of chromosome lq (Squire et al. 1985; Squire et al. 1984). N-myc is expressed in all retinoblastoma tumors, consistent with their embryonic retinal origin, but is amplified in the genome as double minute chromosomes or as an intrachromosomal homogeneously staining region in a few cell lines, such as Y79 (Squire et al. 1986). A DEAD box protein which may be involved in cell growth and division was found to be co-amplified with N-myc in Y79 and RB522A (Godbout and Squire,1993).

5.1.

Genetic Modification

Genetic modification of retinoblastoma cell lines is difficult. Transfection of DNA occurs with extremely low efficiency by any of the current techniques: calcium phosphate precipitation, electroporation and all of the commercially available techniques. Viral constructs are therefore frequently used to genetically manipulate these cells (Chen et al. 1992; Huang et al. 1988; Muncaster et al. 1992).

5.2.

Transfection of retinoblastoma cells with the wild-type RB1 gene

In order to rigorously test the function of RB1 as a tumor suppressor gene, several groups have reconstituted retinoblastoma tumor cell lines with wild type RB1. The results have been wide ranging (Chen et al. 1992; Huang et al. 1988; Muncaster et al. 1992), depending on the experimental design, the cell lines studied, and the vectors and promoters used, and strongly suggest that the ability of RB1 to control cell proliferation is dependent on many factors including the state of differentiation and array of additional mutations in the tumor. For example, reconstitution of WERI-RB27 did not alter tissue culture morphology, but did affect tumorigenicity following xenotransplantation (Chen et al. 1992). Reconstitution of Y79 and WERI-RB1 did not result in any detectable phenotypic change (Muncaster et al. 1992).

5.3.

Retinoblastoma Cell Lines as Models for Therapy

The important role of multidrug resistance in treatment failure in retinoblastoma came from drug sensitivity studies of cell lines (Chan et al. 1989).

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Strategies to circumvent multidrug resistance mechanisms have led to the bestyet cure rates (Gallie et al. 1996), which will now be clarified by multicenter clinical trials (Ferris and Chew, 1996). Photodynamic agents are suggested to be effective against Y79 in vitro (Schmidt-Erfurth et al. 1997). These embryonic, generally undifferentiated tumor cells respond in vitro to a variety of agents that induce differentiation (Bogenmann and Mark, 1983; del Cerro et al. 1992; Gallie et al. 1990; Herman et al. 1989; Perentes et al. 1987; Rajagopalan et al. 1993b). Induction of terminal differentiation in cancer cells is interesting as a possible therapy. For example, agents such as retinoic acid, sodium butyrate, dbcAMP, and hexamethylene bis-acetamide can cause differentiation of Y79 cells into non-proliferating cells (Howard et al. 1991; Kyritsis et al. 1986b; Nakagawa and Perentes, 1987; Rajagopalan et al. 1993a; Zhang et al. 1996). Vitamin D analogs may have a similar effect, or may act on tumors by inhibiting angiogenesis (Shokravi et al. 1995; Shternfeld et al. 1996). Y79 cells can be induced to differentiate by retinoic acid or sodium butyrate and when injected into host rat retina, remain irreversibly mitotically arrested, form synapses with host retina, resemble photoreceptor cells, express neural markers such as neuron-specific enolase and interphotoreceptor retinal binding protein, and maintain the glial markers S-antigen and GFAP (del Cerro et al. 1992). With the combination of chemically induced differentiation and xenografting under the retina, the malignant tumorigenic phenotype is suppressed, while the cells are not rejected by the host. Growth of cell lines as intraocular xenografts has been used to assess clinical therapies (Cowell et al. 1997; Gallie et al. 1982a; Totsuka and Minoda, 1982; White et al. 1988, 1989a,b,c). However, such experiments might be better carried out in transgenic mice, in which retinoblastoma tumors form without surgical manipulation, because the RB protein is inactivated by expression of the viral protein, SV40 large T antigen (Howes et al. 1994; Murray et al. 1996a,b).

6.

CROSS-CONTAMINATION

The continuous cell line, Y79, has cross-contaminated at least two other retinoblastoma cell lines. By using molecular analyses of genetic polymorphisms, one laboratory showed that in their hands three cell lines that had originated from separate patients in widely separate laboratories, were cross-contaminated with Y79 (Madreperla et al. 1991a). One report suggested that retinoblastoma cell lines express lymphopoietic receptors: much more likely is that these particular lines were contaminated with lymphoblast cultures (Stein et al. 1981).

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CELL LINES WITH SPECIAL FEATURES

The Y79 cell line has characteristics not shared by other retinoblastoma cell lines. Y79 is undifferentiated but can attach to a substrate for detailed morphological and biochemical studies (Kyritsis et al. 1986a). Perhaps Y79 represents one of the earliest stages of retinoblastoma development, with an unusually broad differentiation potential and a high rate of proliferation. Other retinoblastoma cell lines are notoriously difficult to manipulate experimentally, limiting the studies that can be done on them.

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Contents of Volume I

Foreword to the Series

vii

Introduction

ix

Chapter 1

Sarcomas BEVERLY A. TEICHER

Chapter 2

Neuroblastoma CAROL J. THIELE

21

Chapter 3

Ewing’s Sarcoma Family of Tumors FRANS VAN VALEN

55

Chapter 4

Mesothelioma MARJAN A. VERSNEL

87

Chapter 5

Pancreatic Tumors TAKESHI IWAMURA and MICHAEL A. HOLLINGSWORTH

107

Chapter 6

Adrenal Cortex Tumors WILLIAM E. RAINEY and JAMES J. MROTEK

123

Chapter 7

Thyroid Gland Tumors THOMAS HOELTING

137

Chapter 8

Pituitary Gland Tumors LEO J. HOFLAND and STEVEN W. J. LAMBERTS

149

Chapter 9

Salivary Gland Tumors MITSUNOBU SATO

161

1

Chapter 10 Esophageal Cancers YUTAKA SHIMADA

179 375

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Contents of Volume I

Chapter 11 Bladder Cancer RUTH KNUECHEL and JOHN R. W. MASTERS

213

Chapter 12 Renal Cell Cancer THOMAS EBERT, ARISTOTELES ANASTASIADIS and NEIL H. BANDER

231

Chapter 13 Skin Cancer (Non-Melanoma) PETRA BOUKAMP

251

Chapter 14 Melanoma: The Wistar Melanoma (WM) Cell Lines MEI-YU Hsu, DAVID A. ELDER and MEENHARD HERLYN

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Chapter 15 Melanoma: Brussels Melanoma Cell Lines FRANCIS BRASSEUR

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Chapter 16 Melanoma: Milan Melanoma Cell Lines ANDREA ANICHINI, ROBERTA MORTARINI, CLAUDIA VEGETTI, ALESSANDRA MOLLA, ALESSANDRA BORRI and GIORGIA PARMIANI

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Human Cell Culture 1.

J.R.W. Masters and B. Palsson (eds.): Human Cell Culture, Vol. I. 1998 ISBN 0-7923-5 143-6

2.

J.R.W. Masters and B. Palsson (eds.): Human Cell Culture, Vol. II. Cancer Cell Lines Part 2. 1999 ISBN 0-7923-5878-3

3.

M.R. Koller, B.O. Palsson and J. R. W. Masters (eds.): Human Cell Culture, Volume IV. Primary Hematopoietic Cells. 1999 ISBN 0-7923-5821-X

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