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缺少Atg5的介酶干细胞通过加速肝细胞生长因子分泌来保护非酒精性脂肪肝

Caifeng Zhang¹, Juanjuan Ji^2,3, Xuefang Du^2,3

¹Department of Gastroenterology, The First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan Province, China. zhangcaifeng666@163.com.

Cell communication and signaling : CCS

|December 3, 2024

概括

在非酒精性脂肪性肝病 (NAFLD) 模型中,缺乏Atg5的间酶体干细胞 (MSC) 减少肝脂肪的积累. 这通过增强肝细胞生长因子 (HGF) 分泌而发生,为NAFLD提供了潜在的新疗法.

科学领域:

干细胞生物学干细胞生物学
肝病学肝病学是一种肝病学.
分子医学是分子医学.

背景情况:

介酶干细胞 (MSC) 显示出对非酒精性脂肪肝 (NAFLD) 等肝脏疾病的治疗前景.
对MSCs的基因改造可以提高其治疗效果.
调查Atg5缺乏的人类脂肪衍生的MSCs用于NAFLD治疗.

研究的目的:

评估在NAFLD中Atg5缺乏MSCs的治疗潜力.
在NAFLD治疗中阐明Atg5缺乏MSC的潜在机制.
评估Atg5缺乏对MSC增殖,衰老和HGF分泌的影响.

主要方法:

在体外:在人体脂肪衍生的MSC中,lentiviral转导降低Atg5的调节;细胞特征的评估.
在体内:建立高脂肪饮食诱导的NAFLD小鼠模型.
通过血清学,生化学和病理学分析评估MSC移植效应.

主要成果:

缺乏Atg5的MSCs表现出增强的增殖活性.
移植Atg5缺乏的MSCs通过调节AMPKα/mTOR/S6K/Srebp1通路来减少NAFLD模型中的脂质积累.
缺少Atg5通过增强循环内分泌体的产生增加了肝细胞生长因子 (HGF) 的分泌;3-MA原料的MSC也增加了HGF的分泌.

结论:

缺乏Atg5的MSC通过促进HGF分泌来保护NAFLD.
经过Atg5基因修改的MSCs代表了NAFLD的有前途的治疗策略.
增强的HGF分泌是Atg5缺乏的MSC在NAFLD中发挥治疗作用的关键机制.

关键词:

在Atg5的5g5上在HGF的基础上.介质细胞干细胞介质细胞干细胞非酒精性脂肪性肝病是非酒精性脂肪性肝病.回收内分泌体的回收利用

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