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PDGFD switches on stem cell endothelial commitment.

Weisi Lu1, Peipei Xu2, Boxiong Deng2

  • 1State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangzhou, 510060, China. luweisi3@mail.sysu.edu.cn.

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Summary
This summary is machine-generated.

Platelet-derived growth factor D (PDGFD) is crucial for switching on endothelial commitment in embryonic stem cells (ESCs). PDGFD regulates ESC fate, impacting self-renewal and differentiation for potential stem cell therapy applications.

Keywords:
Endothelial commitmentPDGFDStem cellVascular differentiation

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Area of Science:

  • Stem cell biology
  • Developmental biology
  • Molecular medicine

Background:

  • Factors regulating endothelial commitment and self-renewal in embryonic stem cells (ESCs) are not fully understood.
  • Identifying key regulators is essential for advancing stem cell therapies.

Purpose of the Study:

  • To investigate the role of Platelet-Derived Growth Factor D (PDGFD) in embryonic stem cell (ESC) differentiation and self-renewal.
  • To elucidate the molecular mechanisms by which PDGFD influences endothelial commitment.

Main Methods:

  • Loss- and gain-of-function assays in multiple model systems.
  • Bioinformatic analysis and RNA sequencing.
  • In vivo studies in mouse models and teratomas.

Main Results:

  • PDGFD is essential for switching on endothelial commitment of ESCs.
  • PDGFD genetic deletion or knockdown inhibits endothelial differentiation and enhances ESC self-renewal.
  • PDGFD overexpression promotes differentiation towards endothelial cells (ECs).
  • PDGFD regulates vascular-differentiation related genes via the MAPK/ERK pathway.
  • PDGFD deficiency decreases blood vessel densities in vivo.

Conclusions:

  • PDGFD is a novel regulator of ESC fate determination, specifically promoting endothelial commitment.
  • Modulating PDGFD activity holds therapeutic potential for stem cell applications.