间充质干细胞衍生的外泌体microRNA-367-3p通过EZH2靶向缓解小鼠骨骼肌下肢缺血再灌注损伤

IF 2.8 4区 医学 Q2 PHARMACOLOGY & PHARMACY
Huanhuan Sun, Jueqiong Wang, Wei Bi, Feng Zhang, Kai Zhang, Xitao Tian, Xiang Gao, Yanrong Zhang
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引用次数: 0

摘要

研究目的本研究旨在探讨骨髓间充质干细胞衍生的外泌体(BMSCs-exo)对下肢缺血/再灌注(I/R)损伤诱发的骨骼肌脓毒症的保护作用:方法:利用小鼠下肢I/R损伤模型来评估BMSCs-exo(尤其是含有microRNA-367-3p(miR-367-3p)的BMSCs-exo)对热蛋白沉积的影响。组织学检查、湿重/干重比测量和荧光素酶测定被用来阐明相关机制:主要发现:BMSCs-exo 能有效抑制损伤骨骼肌组织中的热蛋白沉积。用 miR-367-3p 加载 BMSCs-exo 可通过下调关键的热蛋白沉积相关蛋白来增强这种保护作用。荧光素酶测定发现,泽斯特同源增强子 2(EZH2)是 BMSCs-exo 中 miR-367-3p 的直接靶标:装载了 miR-367-3p 的 BMSCs-exo 可通过靶向 EZH2 保护小鼠骨骼肌免受热休克诱导的 I/R 损伤。这些发现为下肢I/R损伤的潜在治疗策略提供了有价值的见解,强调了BMSCs-exo在减轻热休克引起的组织损伤方面的治疗潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Mesenchymal stem cell-derived exosomal microRNA-367-3p mitigates lower limb ischemia/reperfusion injury in mouse skeletal muscle via EZH2 targeting.

Objective: This study aimed to investigate the protective effect of bone marrow mesenchymal stem cell-derived exosomes (BMSCs-exo) against lower limb ischemia/reperfusion (I/R) injury-induced pyroptosis in skeletal muscle.

Methods: A mouse model of lower limb I/R injury was utilized to assess the impact of BMSCs-exo, particularly when loaded with microRNA-367-3p (miR-367-3p), on pyroptosis. Histological examination, wet weight/dry weight ratio measurements, and luciferase assays were employed to elucidate the mechanisms involved.

Key findings: BMSCs-exo effectively suppressed pyroptosis in injured skeletal muscle tissue. Loading BMSCs-exo with miR-367-3p enhanced this protective effect by downregulating key pyroptosis-related proteins. Luciferase assays identified enhancer of zeste homolog 2 (EZH2) as a direct target of miR-367-3p in BMSCs-exo.

Conclusions: BMSCs-exo loaded with miR-367-3p safeguarded mouse skeletal muscle against pyroptosis-induced I/R injury by targeting EZH2. These findings offer valuable insights into potential therapeutic strategies for lower limb I/R injuries, emphasizing the therapeutic potential of BMSCs-exo in mitigating tissue damage caused by pyroptosis.

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来源期刊
CiteScore
6.60
自引率
0.00%
发文量
91
审稿时长
3 months
期刊介绍: JPP keeps pace with new research on how drug action may be optimized by new technologies, and attention is given to understanding and improving drug interactions in the body. At the same time, the journal maintains its established and well-respected core strengths in areas such as pharmaceutics and drug delivery, experimental and clinical pharmacology, biopharmaceutics and drug disposition, and drugs from natural sources. JPP publishes at least one special issue on a topical theme each year.
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