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阻断源自骨髓间充质干细胞的外泌体miRNA-153-3p通过靶向ANGPT1介导的VEGF/PI3k/Akt/eNOS途径改善缺氧诱导的心肌和微血管损伤。

Blocking exosomal miRNA-153-3p derived from bone marrow mesenchymal stem cells ameliorates hypoxia-induced myocardial and microvascular damage by targeting the ANGPT1-mediated VEGF/PI3k/Akt/eNOS pathway.

作者信息

Ning Wenlong, Li Shuhua, Yang Weiguang, Yang Bo, Xin Chuanyou, Ping Xin, Huang Chuanqi, Gu Yan, Guo Longzhe

机构信息

Department of Emergency, the First Hospital of Qiqihar, Qiqihar 161005, Heilongjiang, China; Department of Emergency, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar 161000, Heilongjiang, China.

Department of Emergency, the First Hospital of Qiqihar, Qiqihar 161005, Heilongjiang, China; Department of Traditional Chinese Medicine, the First Hospital of Qiqihar, Qiqihar 161005, Heilongjiang, China; Department of Traditional Chinese Medicine, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar, Heilongjiang, China.

出版信息

Cell Signal. 2021 Jan;77:109812. doi: 10.1016/j.cellsig.2020.109812. Epub 2020 Oct 24.


DOI:10.1016/j.cellsig.2020.109812
PMID:33164880
Abstract

It has been widely reported that exosomes derived from mesenchymal stem cells (MSCs) have a protective effect on myocardial infarction (MI). However, the specific molecules which play a damaging role in MSCs shuttled miRNAs are much less explored. MiRNA-153-3p (miR-153-3p) is a vital miRNA which has been proved to modulate cell proliferation, apoptosis, angiogenesis, peritoneal fibrosis and aortic calcification. Here, we aim to study the effect and mechanism of miR-153-3p in MSC-derived exosomes on hypoxia-induced myocardial and microvascular damage. The exosomes of MSCs were isolated and identified, and the MSCs-exosomes with low expression of miR-153-3p (exo-miR-153-3p) were constructed to interfere with the endothelial cells and cardiomyocytes in the oxygen-glucose deprivation (OGD) model. The viability, apoptosis, angiogenesis of endothelial cells and cardiomyocytes were determined. Additionally, ANGPT1/VEGF/VEGFR2/PI3K/Akt/eNOS pathway was detected by ELISA and/or western blot. The results illustrated that exo-miR-153-3p significantly reduced the apoptosis of endothelial cells and cardiomyocytes and promoted their viability. Meanwhile, exo-miR-153-3p can promote the angiogenesis of endothelial cells. Mechanistically, miR-153-3p regulates the VEGF/VEGFR2/PI3K/Akt/eNOS pathways by targeting ANGPT1. Intervention with VEGFR2 inhibitor (SU1498, 1 μM) remarkably reversed the protective effect of exo-miR-153-3p in vascular endothelial cells and cardiomyocytes treated by OGD. Collectively, MSCs-derived exosomes with low-expressed miR-153-3p notably promotes the activation of ANGPT1 and the VEGF/VEGFR2 /PI3K/Akt/eNOS pathways, thereby preventing the damages endothelial cells and cardiomyocytes against hypoxia.

摘要

已有广泛报道称,间充质干细胞(MSCs)来源的外泌体对心肌梗死(MI)具有保护作用。然而,在MSCs穿梭的miRNAs中起破坏作用的具体分子却鲜有研究。MiRNA-153-3p(miR-153-3p)是一种重要的miRNA,已被证明可调节细胞增殖、凋亡、血管生成、腹膜纤维化和主动脉钙化。在此,我们旨在研究MSCs来源外泌体中的miR-153-3p对缺氧诱导的心肌和微血管损伤的作用及机制。分离并鉴定了MSCs的外泌体,并构建了低表达miR-153-3p的MSCs-外泌体(exo-miR-153-3p),以干预氧糖剥夺(OGD)模型中的内皮细胞和心肌细胞。测定了内皮细胞和心肌细胞的活力、凋亡和血管生成情况。此外,通过ELISA和/或蛋白质免疫印迹法检测了ANGPT1/VEGF/VEGFR2/PI3K/Akt/eNOS通路。结果表明,exo-miR-153-3p显著降低了内皮细胞和心肌细胞的凋亡并促进了它们的活力。同时,exo-miR-153-3p可促进内皮细胞的血管生成。机制上,miR-153-3p通过靶向ANGPT1调节VEGF/VEGFR2/PI3K/Akt/eNOS通路。用VEGFR2抑制剂(SU1498,1 μM)干预可显著逆转exo-miR-153-3p对OGD处理的血管内皮细胞和心肌细胞的保护作用。总的来说,低表达miR-153-3p的MSCs来源外泌体显著促进ANGPT1的激活以及VEGF/VEGFR2 /PI3K/Akt/eNOS通路的激活,从而防止内皮细胞和心肌细胞免受缺氧损伤。

相似文献

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Blocking exosomal miRNA-153-3p derived from bone marrow mesenchymal stem cells ameliorates hypoxia-induced myocardial and microvascular damage by targeting the ANGPT1-mediated VEGF/PI3k/Akt/eNOS pathway.

Cell Signal. 2021-1

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[6]
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[10]
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