Int J Stem Cells.  2020 Jul;13(2):287-294. 10.15283/ijsc19138.

Effect of Cell Labeling on the Function of Human Pluripotent Stem Cell-Derived Cardiomyocytes

  • 1Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, Korea
  • 2Department of Pharmacy, Chungbuk National University College of Pharmacy, Cheongju, Korea
  • 3Division of Drug Evaluation, NDDC, Oseong Medical Innovation Foundation, Cheongju, Korea
  • 4Research Group for Biomimetic Advanced Technology, Korea Institute of Toxicology, Daejeon, Korea 5R&D Unit, Amorepacific Corporation, Yongin, Korea
  • 5R&D Unit, Amorepacific Corporation, Yongin, Korea
  • 6Department of Stem Cell Biology, School of Medicine, Konkuk University, Seoul, Korea
  • 7Department of Human and Environmental Toxicology, University of Science and Technology, Daejeon, Korea


Cell labeling technologies are required to monitor the fate of transplanted cells in vivo and to select target cells for the observation of certain changes in vitro. Human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) have been transplanted for the treatment of heart injuries or used in vitro for preclinical cardiac safety assessments. Cardiomyocyte (CM) labeling has been used in these processes to facilitate target cell monitoring. However, the functional effect of the labeling agent on hiPSC-CMs has not been studied. Therefore, we investigated the effects of labeling agents on CM cellular functions. 3’-Dioctadecyloxacarbocyanine perchlorate (DiO), quantum dots (QDs), and a DNA plasmid expressing EGFP using Lipo2K were used to label hiPSC-CMs. We conclude that the hiPSC-CM labeling with DiO and QDs does not induce arrhythmogenic effects but rather improves the mRNA expression of cardiac ion channels and Ca2+ influx by L-type Ca2+ channels. Thus, DiO and QD labeling agents may be useful tools to monitor transplanted CMs, and further in vivo influences of the labeling agents should be investigated in the future.


Stem cells; Cardiomyocytes; Cell labeling; Alternative model; Direct label
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