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2022 - A modern automated patch-clamp approach for high throughput electrophysiology recordings in native cardiomyocytes

icon sp96 SyncroPatch 384 publication in Communications Biology (2022)

Authors:

Seibertz F., Rapedius M., Fakuade F., Tomsits P., Liutkute A., Cyganek L., Becker N., Majumder R., Clauß S., Fertig N., Voigt N.
 

Journal:
Communications Biology (2022) doi:10.1038/s42003-022-03871-2


Abstract: 

Crucial conventional patch-clamp approaches to investigate cellular electrophysiology suffer from low-throughput and require considerable experimenter expertise. Automated patch-clamp APC) approaches are more experimenter independent and offer high-throughput, but by design are predominantly limited to assays containing small, homogenous cells. In order to enable high-throughput APC assays on larger cells such as native cardiomyocytes isolated from mammalian hearts, we employed a fixed-well APC plate format. A broad range of
detailed electrophysiological parameters including action potential, L-type calcium current and basal inward rectifier current were reliably acquired from isolated swine atrial and ventricular cardiomyocytes using APC. Effective pharmacological modulation also indicated that this technique is applicable for drug screening using native cardiomyocyte material.
Furthermore, sequential acquisition of multiple parameters from a single cell was successful in a high throughput format, substantially increasing data richness and quantity per experimental run. When appropriately expanded, these protocols will provide a foundation for effective mechanistic and phenotyping studies of human cardiac electrophysiology. Utilizing scarce biopsy samples, regular high throughput characterization of primary cardiomyocytes using APC will facilitate drug development initiatives and personalized treatment strategies for a multitude of cardiac diseases.


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