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Related Experiment Video

Updated: Feb 5, 2026

Purification and Transplantation of Myogenic Progenitor Cell Derived Exosomes to Improve Cardiac Function in Duchenne Muscular Dystrophic Mice
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Moderate Exercise Enhances Endothelial Progenitor Cell Exosomes Release and Function.

Chunlian Ma1, Jinju Wang2, Hua Liu1

  • 1College of Health Science, Wuhan Sports University, Wuhan, CHINA.

Medicine and Science in Sports and Exercise
|September 18, 2018
PubMed
Summary
This summary is machine-generated.

Regular exercise boosts endothelial progenitor cell-derived exosomes (EPC-EX) and their miR-126 content. These exercise-enhanced EPC-EX protect against endothelial cell injury via the SPRED1/VEGF pathway.

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Isolation of Endothelial Progenitor Cells from Human Umbilical Cord Blood
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Area of Science:

  • Cardiovascular Research
  • Cell Biology
  • Exosome Biology

Background:

  • Endothelial progenitor cells (EPCs) play a role in cardiovascular health.
  • EPC-derived exosomes (EPC-EX) carry microRNA-126 (miR-126) and are implicated in vascular repair.
  • Exercise is known to confer cardiovascular benefits, potentially mediated by EPCs and their exosomes.

Purpose of the Study:

  • To investigate if exercise increases circulating EPC-EX levels and miR-126 cargo.
  • To determine if exercise-enhanced EPC-EX offer improved protection to endothelial cells (EC).
  • To elucidate the molecular mechanisms underlying the protective effects of EPC-EX on EC.

Main Methods:

  • Plasma EPC-EX were isolated from mice subjected to different exercise regimens.
  • Characterization of EPC-EX included nanoparticle tracking analysis and biomarker assessment (including miR-126).
  • An in vitro endothelial cell injury model was established and treated with EPC-EX, with or without miR-126 inhibition, to assess cell apoptosis, tube formation, migration, and specific gene expression.

Main Results:

  • Exercise intensity-dependently increased plasma EPC-EX levels and their miR-126 content.
  • Exercise-enhanced EPC-EX demonstrated superior protective effects on injured EC compared to those from sedentary mice.
  • The protective effects of EPC-EX were mediated by the downregulation of SPRED1 and upregulation of VEGF, and were dependent on miR-126.
  • miR-126 knockdown abolished the beneficial effects of EPC-EX on EC.

Conclusions:

  • Exercise enhances the release of EPC-EX and their miR-126 cargo.
  • Exercise-induced EPC-EX protect endothelial cells from injury through the SPRED1/VEGF signaling pathway.
  • These findings highlight a novel mechanism by which exercise promotes cardiovascular health.