Mammalian electrophysiology on a microfluidic ... - Semantic Scholar
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Mammalian electrophysiology on a microfluidic ... - Semantic Scholar
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Mammalian electrophysiology on a microfluidic platform Cristian Ionescu-Zanetti*†, Robin M. Shaw†‡§, Jeonggi Seo*, Yuh-Nung Jan‡, Lily Y. Jan‡¶, and Luke P. Lee*储 *Department of Bioengineering, University of California, Berkeley, CA 94720; ‡Howard Hughes Medical Institute and Department of Physiology and Biochemistry, University of California, San Francisco, CA 93143-0725; and §Division of Cardiology, Department of Medicine, University of California, San Francisco, CA 93143-0124 Contributed by Lily Y. Jan, April 25, 2005
The recent development of automated patch clamp technology has increased the throughput of electrophysiology but at the expense of visual access to the cells being studied. To improve visualization and the control of cell position, we have developed a simple alternative patch clamp technique based on microfluidic junctions between a main chamber and lateral recording capillaries, all fabricated by micromolding of polydimethylsiloxane (PDMS). PDMS substrates eliminate the need for vibration isolation and allow direct cell visualization and manipulation using standard microscopy. Microfluidic integration allows recording capillaries to be arrayed 20 m apart, for a total chamber volume of