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Updated: Mar 24, 2026
Assessing Cardiomyocyte Subtypes Following Transcription Factor-mediated Reprogramming of Mouse Embryonic Fibroblasts
Published on: March 22, 2017
Mapping Human Pluripotent-to-Cardiomyocyte Differentiation: Methylomes, Transcriptomes, and Exon DNA Methylation
Joshua D Tompkins1, Marc Jung1, Chang-Yi Chen2
1Department of Diabetes Complications and Metabolism, Duarte, CA 91010, USA; Beckman Research Institute at City of Hope National Medical Center, Duarte, CA 91010, USA.
Human cardiomyocytes (CMs) derived from pluripotent cells offer promise for cardiac repair. This study identifies key factors and epigenetic memories in CM development using a defined differentiation strategy.
Area of Science:
- Stem cell biology
- Cardiovascular research
- Epigenetics
Background:
- Directed differentiation of human cardiomyocytes (CMs) from pluripotent cells is crucial for cardiac regenerative medicine and understanding cell fate.
- Existing methods require optimization for efficiency and clarity.
Purpose of the Study:
- To generate human CMs from a Good Manufacturing Practice (GMP)-produced human embryonic stem cell bank.
- To utilize a fully defined, small molecule-based differentiation strategy.
- To identify key molecular players and epigenetic mechanisms in cardiomyogenesis.
Main Methods:
- Utilized a GMP-produced human embryonic stem cell bank.
- Employed a fully defined, small molecule-based differentiation protocol.
- Incorporated primitive and cardiac mesoderm purification.
- Analyzed global methylation profiles.
Main Results:
- Successfully generated CMs using the defined strategy.
- Purification enhanced the identification of key transcription factors, lncRNAs, and signaling pathways in cardiomyogenesis.
- Global methylation profiles correlated with CM development.
- Identified persistent DNA methylation "memories" in CM exons, reflecting gene expression history.
Conclusions:
- A defined differentiation strategy from GMP-grade stem cells can efficiently produce human CMs.
- Mesoderm purification is critical for identifying cardiomyogenesis regulators.
- Epigenetic DNA methylation "memories" play a role in maintaining developmental gene expression patterns in CMs.
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