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miR-19a/19b improves the therapeutic potential of mesenchymal stem cells in a mouse model of myocardial infarction.
Gene Therapy ( IF 4.6 ) Pub Date : 2020-01-22 , DOI: 10.1038/s41434-020-0122-3
Chengbo Chen 1 , Tianbao Chen 1 , Yangyi Li 1 , Youbang Xu 1
Affiliation  

Myocardial infarction (MI) is the cardiac emergency that may leads to myocardial necrosis. Mesenchymal stem cells (MSCs) could be used to induce myocardial differentiation. However, the efficiency remains low. The aim of this study is to explore whether miR-19a/19b could enhance the therapeutic potential of mesenchymal stem cells in MI. Myocardial infarction mouse model was established using coronary artery ligation. Cardiac functional recovery was detected by Masson's trichrome staining. Under hypoxic condition, miR-19a/19b expression levels decreased in bone marrow-derived MSCs (BM-MSCs). MiR-19a/19b suppressed the proliferation of MSCs under hypoxic condition. After cell engraftment, miR-19a/19b promoted survival of MSCs. Mechanically, miR-19a/19b inhibited inflammatory cells infiltration into myocardium cells. Moreover, MSCs-miR-19a/19b improves cardiac functional recovery in diabetic MI mice models. All the results indicated that miR-19a/19b improves the therapeutic potential of mesenchymal stem cells in a mouse model of myocardial infarction.

中文翻译:

miR-19a/19b 提高了间充质干细胞在心肌梗死小鼠模型中的治疗潜力。

心肌梗塞(MI)是可能导致心肌坏死的心脏急症。间充质干细胞 (MSCs) 可用于诱导心肌分化。但是,效率仍然很低。本研究的目的是探索 miR-19a/19b 是否可以增强 MI 间充质干细胞的治疗潜力。采用冠状动脉结扎法建立心肌梗死小鼠模型。通过马森三色染色检测心脏功能恢复。在缺氧条件下,骨髓来源的 MSC(BM-MSC)中 miR-19a/19b 的表达水平降低。MiR-19a/19b 在缺氧条件下抑制 MSCs 的增殖。细胞移植后,miR-19a/19b 促进了 MSCs 的存活。在机械上,miR-19a/19b 抑制炎症细胞浸润到心肌细胞中。而且,MSCs-miR-19a/19b 改善糖尿病 MI 小鼠模型的心脏功能恢复。所有结果表明 miR-19a/19b 提高了间充质干细胞在心肌梗死小鼠模型中的治疗潜力。
更新日期:2020-01-22
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