例如:"lncRNA", "apoptosis", "WRKY"

Bone marrow mesenchymal stem cells-derived exosomal microRNA-185 represses ventricular remolding of mice with myocardial infarction by inhibiting SOCS2.

Int. Immunopharmacol.2020 Mar;80:106156. Epub 2020 Jan 13
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摘要


OBJECTIVE:Recently, the function of microRNAs (miRNAs) has been clarified in human diseases, we aimed to identify the role of miR-185 in myocardial infarction (MI). METHODS:Bone marrow mesenchymal stem cells (BMSCs) were cultured, from which the exosomes were extracted. MI mice models were established by coronary artery ligation and injected with transfected BMSCs. The echocardiographic and ventricle indicators, and hemodynamics of mice were measured. Moreover, the ultrastructure and apoptosis of cardiomyocytes were determined, and expression of miR-185, suppressor of cytokine signaling 2 (SOCS2), collagens, and apoptotic proteins in myocardial tissues were evaluated. RESULTS:MiR-185 was poorly expressed in myocardial tissues of MI mice. BMSCs-Exo could shuttle miR-185 to promote cardiac function and attenuate myocardial injury of myocardial tissues in MI mice, and also could protect cardiomyocytes from apoptosis in MI mice by reducing the expression of SOCS2. SOCS2 was determined to be the direct target gene of miR-185. Overexpressed SOCS2 could block the cardioprotective effect of BMSCs-derived exosomal miR-185 in MI mice. CONCLUSION:We have found in this study that BMSCs-derived exosomal miR-185 could repress ventricular remolding of MI mice by inhibiting SOCS2. This study may provide new method for MI treatment.

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