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Human placental mesenchymal stem cells improve stroke outcomes via extracellular vesicles-mediated preservation of cerebral blood flow.

Abstract：

BACKGROUND:Besides long-term trans-differentiation into neural cells, benefits of stem cell therapy (SCT) in ischemic stroke may include secretion of protective factors, which partly reflects extracellular vesicle (EVs) released by stem cell. However, the mechanism(s) by which stem cells/EVs limit stroke injury have yet to be fully defined. METHODS:We evaluated the protection effect of human placenta mesenchymal stem cells (hPMSC) as a potential form of SCT in experimental ischemic stroke 'transient middle cerebral artery occusion (MCAO)/reperfusion' mice model. FINDINGS:We found for the first time that intraperitoneal administration of hPMSCs or intravenous hPMSC-derived EVs, given at the time of reperfusion, significantly protected the ipsilateral hemisphere from ischemic injury. This protection was associated with significant restoration of normal blood flow to the post-MCAO brain. More importantly, EVs derived from hPMSC promote paracrine-based protection of SCT in the MCAO model in a cholesterol/lipid-dependent manner. INTERPRETATION:Together, our results demonstrated beneficial effects of hPMSC/EVs in experimental stroke models which could permit the rapid "translation" of these cells into clinical trials in the near-term.

journal_name

EBioMedicine

journal_title

EBioMedicine

authors

Barzegar M,Wang Y,Eshaq RS,Yun JW,Boyer CJ,Cananzi SG,White LA,Chernyshev O,Kelley RE,Minagar A,Stokes KY,Lu XH,Alexander JS

doi

10.1016/j.ebiom.2020.103161

subject

Has Abstract

pub_date

2021-01-01 00:00:00

pages

103161

issn

2352-3964

pii

S2352-3964(20)30537-5

journal_volume

63

pub_type

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