Effect of exosomes from adipose-derived stem cells on the apoptosis of Schwann cells in peripheral nerve injury.

Abstract:

AIMS:Recovery after peripheral nerve injury (PNI) is often difficult, and there is no optimal treatment. Schwann cells (SCs) are important for peripheral nerve regeneration, so SC-targeting treatments have gained importance. Adipose-derived stem cells (ADSCs) and their exosomes can promote peripheral nerve repair, but their interactions with SCs are unclear. METHODS:Purified SCs from sciatic nerve injury sites were harvested, and apoptosis and proliferation of SCs at post-PNI 24 hours were analyzed. The effects of coculture with ADSCs and different concentrations of ADSC-derived exosomes (ADSC-Exo) were studied through in vitro experiments by flow cytometry, CCK8 assay, immunofluorescence staining, and histological analysis. The expression of the apoptosis-related genes Bcl-2 and Bax was also analyzed by qRT-PCR. RESULTS:ADSC-Exo reduced the apoptosis of SCs after PNI by upregulating the anti-apoptotic Bcl-2 mRNA expression and downregulating the pro-apoptotic Bax mRNA expression. Further, it also improved the proliferation rate of SCs. This effect was confirmed by the morphological and histological findings in PNI model rats. CONCLUSION:Our results present a novel exosome-mediated mechanism for ADSC-SC cross talk that reduces the apoptosis and promotes the proliferation of SCs and may have therapeutic potential in the future.

journal_name

CNS Neurosci Ther

authors

Liu CY,Yin G,Sun YD,Lin YF,Xie Z,English AW,Li QF,Lin HD

doi

10.1111/cns.13187

subject

Has Abstract

pub_date

2020-02-01 00:00:00

pages

189-196

issue

2

eissn

1755-5930

issn

1755-5949

journal_volume

26

pub_type

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