Microvesicles derived from human Wharton's jelly mesenchymal stem cells enhance autophagy and ameliorate acute lung injury via delivery of miR-100.
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| Abstract | OBJECTIVES: Microvesicles (MVs) derived from human Wharton's jelly mesenchymal stem cells (MSC-MVs) were demonstrated to ameliorate acute lung injury (ALI). We have previously found that MSC-MV-transferred hepatocyte growth factor was partly involved in their therapeutic effects. Since MSC-MVs also contained a substantial quantity of miR-100, which plays an important role in lung cancer and injury, we speculated that miR-100 might similarly account for a part of the therapeutic effects of MSC-MVs. METHODS: MSCs were transfected with miR-100 inhibitor to downregulate miR-100 in MSC-MVs. A rat model of ALI and cell injury in rat type II alveolar epithelial cell line (L2) was induced by bleomycin (BLM). A co-culture model of alveolar epithelial cells and MSC-MVs was utilized to examine the therapeutic role of MSC-MVs and mechanism. RESULTS: MSC-MV treatment attenuated BLM-induced apoptosis and inflammation in BLM-treated L2 cells and ameliorated BLM-induced lung apoptosis, inflammation, and fibrosis in BLM-induced ALI rats. The beneficial effect of MSC-MVs was partly eliminated when miR-100 was knocked down in MSCs. Moreover, MSC-MV-transferred miR-100 mediated the therapeutic effect of MSC-MVs in ALI through enhancing autophagy by targeting mTOR. CONCLUSION: MSC-MVs enhance autophagy and ameliorate ALI partially via delivery of miR-100.
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| Authors | Wen-Xia Chen, Jun Zhou, Sha-Sha Zhou, Yu-Dan Zhang, Tong-Yu Ji, Xiao-Li Zhang, Shu-Min Wang, Tao Du, De-Gang Ding |
| Journal | Stem cell research & therapy (Stem Cell Res Ther) Vol. 11 Issue 1 Pg. 113 (03 13 2020) ISSN: 1757-6512 [Electronic] England |
| PMID | 32169098 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't) |
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