介酶干细胞-细胞外囊泡通过调节免疫调节剂来缓解肺纤维化
Ying Gao1, Mei-Fang Liu2, Yang Li3
1Department of Respiratory and Critical Care Medicine, Shaanxi Provincial Rehabilitation Hospital, Xi'an 710000, Shaanxi Province, China.
World journal of stem cells
|July 1, 2024
概括
介酶干细胞-细胞外囊泡 (MSC-EVs) 在治疗肺纤维化 (PF) 中表现有前途. 在细胞培养和小鼠模型中,MSC-EV有效降低纤维化,氧化应激和炎症,为PF提供了潜在的新疗法.
科学领域:
- 再生医学是一种再生医学.
- 细胞生物学 细胞生物学
- 肺部医学 肺部医学
背景情况:
- 肺纤维化 (PF) 是一种由纤维细胞增殖和细胞外矩阵积累而导致肺衰竭的渐进性肺病.
- 介酶干细胞-细胞外囊泡 (MSC-EVs) 代表了PF的新治疗途径.
- 目前对PF的治疗方法有限,这凸显了对创新方法的需求.
研究的目的:
- 评估MSC-EVs在缓解纤维化,氧化应激和免疫炎症方面的治疗潜力.
- 评估MSC-EV在体外细胞模型 (A549细胞) 和体内临床前模型 (小鼠中的白素诱导的PF) 中的疗效.
主要方法:
- 在用MSC-EVs治疗的A549细胞中评估了纤维化标志物 (原I,α-SMA),氧化应激调节剂 (Nrf2,HO-1) 和炎症标志物 (NF-κB p65,IL-1β,IL-2).
- 在小鼠中使用白色素 (BLM) 诱导PF,并通过病理染色和西方斑点评估MSC-EVs的影响.
- 利用单细胞RNA测序来分析MSC-EVs在小鼠模型中对巨细胞基因表达的影响.
主要成果:
- 转化生长因子-β1 (TGF-β1) 在A549细胞中加剧了纤维化,增加了原I和α-SMA;MSC-EV治疗显著扭转了这些影响.
- 在细胞和小鼠模型中,MSC-EVs减轻了氧化应激和炎症标志物 (Nrf2,HO-1,NF-κB p65,IL-1β).
- 在PF小鼠中,MSC-EVs降低了原沉积,氧化应激和炎症性细胞因子,mRNA测序表明BLM通过原沉积和免疫炎症诱导PF.
结论:
- MSC-EV显示出肺纤维化治疗的显著潜力.
- MSC-EVs通过降低对原体沉积,氧化应激和免疫炎症反应的调节来改善纤维化.
- 这些发现支持MSC-EVs作为PF的有希望的无细胞疗法.
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