Ion channels expression and function are strongly modified in solid ...
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Biasiotta et al. J Transl Med (2016) 14:285 DOI 10.1186/s12967-016-1038-y
Journal of Translational Medicine Open Access
RESEARCH
Ion channels expression and function are strongly modified in solid tumors and vascular malformations Antonella Biasiotta1†, Daniela D’Arcangelo2†, Francesca Passarelli2, Ezio Maria Nicodemi2* and Antonio Facchiano2*
Abstract Background: Several cellular functions relate to ion-channels activity. Physiologically relevant chains of events leading to angiogenesis, cell cycle and different forms of cell death, require transmembrane voltage control. We hypothesized that the unordered angiogenesis occurring in solid cancers and vascular malformations might associate, at least in part, to ion-transport alteration. Methods: The expression level of several ion-channels was analyzed in human solid tumor biopsies. Expression of 90 genes coding for ion-channels related proteins was investigated within the Oncomine database, in 25 independent patients-datasets referring to five histologically-different solid tumors (namely, bladder cancer, glioblastoma, melanoma, breast invasive-ductal cancer, lung carcinoma), in a total of 3673 patients (674 control-samples and 2999 cancer-samples). Furthermore, the ion-channel activity was directly assessed by measuring in vivo the electrical sympathetic skin responses (SSR) on the skin of 14 patients affected by the flat port-wine stains vascular malformation, i.e., a non-tumor vascular malformation clinical model. Results: Several ion-channels showed significantly increased expression in tumors (p
