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Related Experiment Video

Updated: Jun 17, 2025

Direct Induction of Hemogenic Endothelium and Blood by Overexpression of Transcription Factors in Human Pluripotent Stem Cells
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Generation of Directly Reprogrammed Human Endothelial Cells.

Seonggeon Cho1, Iris Xia1, Sangho Lee1

  • 1Division of Cardiology, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA.

Methods in Molecular Biology (Clifton, N.J.)
|August 6, 2024
PubMed
Summary

Direct reprogramming generates functional endothelial cells (ECs) from human fibroblasts using the ETV2 factor. This method bypasses stem cells, offering new avenues for cardiovascular research and therapies.

Keywords:
Direct reprogrammingER71/ETV2Endothelial cellsNeovascularizationTransdifferentiation

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Area of Science:

  • Cardiovascular Biology
  • Cellular Reprogramming
  • Regenerative Medicine

Background:

  • Direct reprogramming offers a novel strategy for generating functional endothelial cells (ECs) without intermediate stem or progenitor states.
  • ETV2 is a critical transcription factor identified for its role in specifying endothelial lineage.
  • Precise ETV2 induction and specific combinations of growth factors/small molecules are crucial for effective endothelial reprogramming.

Purpose of the Study:

  • To provide a straightforward protocol for generating two distinct types of reprogrammed ECs (rECs) from human dermal fibroblasts (HDFs).
  • To characterize the properties of early and late rECs, including their neovascularization capacity and phenotypic maturity.

Main Methods:

  • Direct reprogramming of human dermal fibroblasts (HDFs) using ETV2.
  • Utilizing a specific combination of growth factors and small molecules to maintain the reprogrammed cellular phenotype.
  • Characterization of early and late rECs for phenotype and function.

Main Results:

  • Successful generation of two distinct types of rECs from HDFs.
  • Early rECs exhibit robust neovascularization but lack mature EC phenotype.
  • Late rECs show phenotypical similarity to human postnatal ECs with comparable neovascularization capacity to early rECs.

Conclusions:

  • Direct reprogramming offers a viable method for generating functional ECs from somatic cells.
  • The generated rECs are suitable for personalized disease investigations, drug discovery, and therapeutic applications.
  • This protocol provides a valuable resource for advancing cardiovascular research and treatment strategies.