肥胖会削弱中细胞干细胞衍生的细胞外囊的效果
Weijun Huang1,2, Siting Hong1,3, Xiangyang Zhu1
1Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota, USA.
Kidney international reports
|September 14, 2023
概括
肥胖会削弱中细胞干细胞衍生的细胞外囊泡 (MSC-EVs) 在脏修复方面的治疗潜力. 瘦体MSC-EV在慢性缺血性脏病中表现出优异的抗低氧,抗纤维化和抗炎作用.
科学领域:
- 再生医学是一种再生医学.
- 血管生物学 血管生物学
- 干细胞生物学 干细胞生物学
背景情况:
- 介酶干细胞/介酶干细胞衍生的细胞外囊泡 (MSC-EVs) 是具有治疗应用的强大的膜介质.
- 供体肥胖对MSC-EVs疗效的影响在很大程度上仍未被探索.
- 这项研究调查了肥胖是否影响脂肪组织衍生的MSC-EVs的治疗功能.
研究的目的:
- 测试肥胖减弱人类脂肪组织衍生MSC-EVs (A-MSC-EVs) 的治疗效果的假设.
- 在病的临床前模型中,评估来自肥胖与瘦身捐赠者的MSC-EV之间的功能差异.
主要方法:
- 通过超离心,MSC-EV从肥胖和瘦人体中分离出来.
- EVs被静脉注射给患有诱导动脉狭窄症 (RAS) 的小鼠.
- 用MRI,组织学和基因表达分析来评估功能,组织损伤,炎症,缺氧和纤维化.
主要成果:
- 局部化到脏组织的MSC-EV,包括质细胞和管状细胞.
- 肥胖和瘦的MSC-EV都改善了脏体积和降低了血压,但瘦的MSC-EV更有效.
- 与肥胖的MSC-EV相比,瘦体MSC-EV在髓缺氧,纤维化减少,管管损伤减弱和炎症标志物减少方面表现出卓越的改善.
结论:
- 肥胖症显著减弱MSC-EVs对慢性缺血性病中缺氧,纤维化,炎症和管状修复的有益作用.
- 这些发现表明,供体肥胖可能会限制自身MSC-EV疗法的疗效.
- 需要进一步的研究,以了解对肥胖人口的再生医学策略的影响.
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