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Endothelial Progenitor Cells Modulate Inflammation-Associated Stroke Vasculome.

Sandra A Acosta1, Jea Y Lee1, Hung Nguyen1

  • 1Department of Neurosurgery and Brain Repair, University of South Florida Morsani College of Medicine, 12901 Bruce B. Downs Blvd., Tampa, FL, 33612, USA.

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Human endothelial progenitor cells (EPCs) show therapeutic potential for stroke by modulating the brain

Keywords:
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Area of Science:

  • Neuroscience
  • Regenerative Medicine
  • Vascular Biology

Background:

  • Stroke is a significant unmet medical need requiring novel therapeutic strategies.
  • Cerebral vasculature alterations, termed the stroke vasculome, contribute to post-ischemic inflammation.

Purpose of the Study:

  • To investigate the therapeutic effects of endothelial progenitor cells (EPCs) on the inflammation-associated stroke vasculome.
  • To evaluate EPCs' impact on specific gene expression in an experimental stroke model.

Main Methods:

  • Utilized qRT-PCR to analyze inflammation-related vasculome genes (BRM, IκB, Foxf1, ITIH-5) in response to oxygen-glucose deprivation (OGD).
  • Employed co-culture systems with human endothelial cells (HEN6) and EPCs during OGD.
  • Used knockdown/antisense technology to silence the IκB gene and assessed EPC-mediated protection.
  • Administered intracerebral human EPCs to stroke animal models and evaluated behavioral recovery and vasculome markers in vivo.

Main Results:

  • OGD significantly upregulated BRM, IκB, Foxf1, and ITIH-5.
  • Co-culture with EPCs blocked the OGD-induced elevation of BRM, IκB, and Foxf1.
  • Silencing IκB abrogated EPC-mediated protection of HEN6 against OGD.
  • EPC transplantation in stroke animals led to significant behavioral recovery.
  • EPCs downregulated stroke-associated vasculome genes (BRM, IKB, Foxf1, ITIH-5, PMCA2) and upregulated the endothelial marker RECA1 in vivo.

Conclusions:

  • Human EPCs demonstrate therapeutic efficacy in experimental stroke models.
  • EPCs may exert protective effects by modulating the inflammation-associated stroke vasculome.
  • Targeting the stroke vasculome with EPCs represents a promising therapeutic avenue.