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Updated: Feb 13, 2026

Single-Cell Optical Action Potential Measurement in Human Induced Pluripotent Stem Cell-Derived Cardiomyocytes
08:39

Single-Cell Optical Action Potential Measurement in Human Induced Pluripotent Stem Cell-Derived Cardiomyocytes

Published on: December 22, 2020

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Ion Channel Expression and Characterization in Human Induced Pluripotent Stem Cell-Derived Cardiomyocytes

Zhihan Zhao1,2, Huan Lan1,2,3, Ibrahim El-Battrawy1,2

  • 1First Department of Medicine, Faculty of Medicine, University Medical Centre Mannheim (UMM), University of Heidelberg, Mannheim, Germany.

Stem Cells International
|March 15, 2018
PubMed

Insights

Human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) possess most cardiac ion channels, influencing action potential. Adrenergic stimulation modulates specific ion currents in these cells, crucial for cardiac research and drug discovery.

Area of Science:

  • Cardiovascular Biology
  • Stem Cell Science
  • Electrophysiology

Background:

  • Human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) offer potential for biological studies, cell therapies, and drug discovery.
  • Comprehensive characterization of ion channel expression, function, and regulation in hiPSC-CMs is essential.

Purpose of the Study:

  • To fully characterize the ion channel repertoire and functional properties of hiPSC-CMs.
  • To investigate the regulatory effects of adrenergic stimulation on ion channel activity in hiPSC-CMs.

Main Methods:

  • hiPSC-CMs were generated from two healthy donors.
  • Quantitative real-time PCR (qPCR) and patch clamp techniques were employed to assess ion channel expression and currents.

Main Results:

  • Beyond known channels, hiPSC-CMs express ACh-activated (KACh), Na+-activated (KNa) K+, volume-regulated and Ca2+-activated (Cl-Ca) Cl-, and TRPV channels.
  • Most detected ion currents, excluding I K1, I KACh, I SK, I KNa, and TRPV1, contribute to action potential duration.
  • Isoprenaline modulated I Ca-L, I f, I Ks, I Na, and I NCX, while carbachol had no effect on tested currents.

Conclusions:

  • hiPSC-CMs exhibit a broad spectrum of ion channels found in native cardiomyocytes.
  • These ion channels play a role in action potential performance.
  • Adrenergic stimulation demonstrates regulatory effects on specific ion channels within hiPSC-CMs.
Abstract

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