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Related Concept Videos

Tissue Renewal without Stem Cells01:23

Tissue Renewal without Stem Cells

1.9K
After cellular or tissue damage, the resident stem cells present in the human body can locally repair and regenerate the damaged tissue or organ. However, even though some tissues do not have stem cells, they can repair and regenerate with the help of pre-existing cells. For example, beta cells of the pancreas and hepatocytes of the liver can divide to renew and regenerate the tissue. Here, both cell division and cell death are well regulated by homeostasis.
However, failure of such a system...
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Related Experiment Video

Updated: Oct 19, 2025

Suppression of Pro-fibrotic Signaling Potentiates Factor-mediated Reprogramming of Mouse Embryonic Fibroblasts into Induced Cardiomyocytes
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Suppression of Pro-fibrotic Signaling Potentiates Factor-mediated Reprogramming of Mouse Embryonic Fibroblasts into Induced Cardiomyocytes

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Reversing aging for heart repair.

Yu Xin Wang1, Helen M Blau1

  • 1Baxter Laboratory for Stem Cell Biology, Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA.

Science (New York, N.Y.)
|September 23, 2021
PubMed
Summary

Adult mouse heart cells can regenerate after a short-term boost in pluripotency gene expression. This finding offers new possibilities for cardiac repair and understanding heart regeneration.

Area of Science:

  • Cardiovascular Biology
  • Regenerative Medicine
  • Molecular Biology

Background:

  • Cardiomyocytes, the heart muscle cells, have limited regenerative capacity in adult mammals.
  • Cardiac injury often leads to fibrosis and impaired heart function due to poor cardiomyocyte regeneration.

Purpose of the Study:

  • To investigate whether transient induction of pluripotency genes can stimulate cardiomyocyte regeneration in adult mice.
  • To explore the potential of reprogramming strategies for cardiac repair.

Main Methods:

  • Adult mice underwent short-term induction of key pluripotency genes (e.g., Oct4, Sox2, Klf4, c-Myc).
  • Cardiomyocyte proliferation and survival were assessed using techniques like EdU incorporation and immunostaining.
  • Cardiac function was evaluated through echocardiography.

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Capturing the Cardiac Injury Response of Targeted Cell Populations via Cleared Heart Three-Dimensional Imaging
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Last Updated: Oct 19, 2025

Suppression of Pro-fibrotic Signaling Potentiates Factor-mediated Reprogramming of Mouse Embryonic Fibroblasts into Induced Cardiomyocytes
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Delayed Intramyocardial Delivery of Stem Cells after Ischemia Reperfusion Injury in a Murine Model
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Capturing the Cardiac Injury Response of Targeted Cell Populations via Cleared Heart Three-Dimensional Imaging
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Capturing the Cardiac Injury Response of Targeted Cell Populations via Cleared Heart Three-Dimensional Imaging

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Main Results:

  • Transient expression of pluripotency genes significantly increased cardiomyocyte proliferation.
  • Regenerated cardiomyocytes were observed in injured areas, contributing to tissue repair.
  • Short-term induction did not lead to teratoma formation or adverse effects.

Conclusions:

  • Short-term induction of pluripotency gene expression is a viable strategy to promote cardiomyocyte regeneration in adult mice.
  • This approach holds promise for developing novel therapies for heart disease and cardiac regeneration.