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Related Experiment Video

Updated: Jul 14, 2026

Efficient Derivation of Human Cardiac Precursors and Cardiomyocytes from Pluripotent Human Embryonic Stem Cells with Small Molecule Induction
10:46

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'Working' cardiomyocytes exhibiting plateau action potentials from human placenta-derived extraembryonic mesodermal

Kazuma Okamoto1, Shunichiro Miyoshi, Masashi Toyoda

  • 1Department of Reproductive Biology and Pathology, National Research Institute for Child Health and Development, Tokyo, Japan.

Experimental Cell Research
|June 5, 2007
PubMed
Summary

Human placenta cells show potential for cardiac repair in severe heart failure. These fetal cells can differentiate into cardiomyocytes, offering a promising alternative for stem cell therapy when bone marrow cells are unsuitable.

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Area of Science:

  • Regenerative Medicine
  • Cardiovascular Biology
  • Stem Cell Biology

Background:

  • Severe heart failure necessitates innovative therapeutic strategies for cardiac repair.
  • Various cell types are being investigated for cardiac regeneration, including bone marrow cells, stem cells, and progenitor cells.
  • The placenta represents an alternative, readily accessible cell source for therapeutic applications.

Purpose of the Study:

  • To investigate the cardiomyogenic potential of human placental cells derived from the chorionic plate.
  • To evaluate the differentiation capacity of these cells into functional cardiomyocytes.
  • To assess the feasibility of using placenta-derived cells for cardiac cell therapy.

Main Methods:

  • Primary culture of cells from the human placental chorionic plate.
  • Gene expression analysis (gene chip, RT-PCR) for cardiomyocyte-specific markers.
  • Immunohistochemistry to detect cardiac troponin-I and connexin 43.
  • In vitro co-cultivation with murine fetal cardiomyocytes to assess differentiation and function.

Main Results:

  • Placental cells expressed key cardiomyocyte-specific genes (e.g., Csx/Nkx2.5, GATA4, cardiac troponin-I, connexin 43).
  • These cells differentiated into cardiomyocytes, exhibiting characteristic protein localization and spontaneous, synchronous beating.
  • Evidence of electrical communication between differentiated cells was observed.

Conclusions:

  • Human placental chorionic plate-derived cells possess significant cardiomyogenic potential.
  • These cells can differentiate into functional cardiomyocytes, suggesting their utility in cardiac repair.
  • Placental cells offer a viable alternative for stem cell-based cardiac therapy, particularly for patients lacking suitable bone marrow sources.