Journal
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
Volume 593, Issue -, Pages 13-19Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bbrc.2022.01.039
Keywords
TGR5; Apoptosis; Marrow mesenchymal stem cells; Middle cerebral artery occlusion
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Bone marrow mesenchymal stem cell-derived exosomes (BM-MSCs-exo) can promote neuro function recovery after cerebral infarction by activating TGR5 and inhibiting apoptosis.
Cerebral infarction has become one of the most common neurovascular diseases, and it leads to a high disability and death rate. The exosomes derived from bone marrow mesenchymal stem cells (BM-MSCs-exo) have been viewed as a potential therapeutic method for some diseases. However, the role of BM-MSCs-exo in cerebral infarction remains unclear. Middle cerebral artery occlusion (MCAO) rat and oxy-gen and glucose deprived cell models were established. Neurological score, animal behaviors, TTC-staining, HE staining, and immunohistochemical staining were performed to evaluate neuro function recovery. Floy cytometry was applied to detect apoptosis and cell cycle. BM-MSCs-exo significantly improved infarction ratio and neurological function after MCAO, and the influence of BM-MSCs-exo on neuro function recovery could be reversed by knocking down TGR5. Meanwhile, BM-MSCs-exo could remarkably activate TGR5 in vivo. The suppression of apoptosis by BM-MSCs-exo in vivo and in vitro was remarkably reversed by siRNA TGR5. BM-MSCs-exo promoted the animal recovery after MCAO. The neuroprotective effect by BM-MSCs-exo might be achieved by activating TGR5 and inhibiting apoptosis. Our findings provide a potential therapeutic thought for the treatment of cerebral infarction through BM-MSCs-exo targeting TGR5 and inhibiting apoptosis. (c) 2022 Elsevier Inc. All rights reserved.
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