莱普通过AKT-mTOR信号通路促进肌干细胞/原始细胞衰老
Changbin Lei1, Yanmei Li2, Jiafeng Chen3
1Department of Orthopedics, Affiliated Hospital of Xiangnan University, Chenzhou, 423000, China.
Experimental cell research
|October 11, 2024
概括
高水平的勒因通过AKT/mTOR通路影响肌干细胞而损害肌愈合. 拉帕米辛治疗挽救了这些缺陷,这表明肌病的治疗标.
科学领域:
- 生物医学科学 生物医学科学
- 细胞生物学 细胞生物学
- 整形外科 整形外科 整形外科
背景情况:
- 失调的阿迪波金,像勒素一样,与肌失衡和肌病变有关.
- 莱普影响肌干细胞/原生细胞 (TSPC) 和肌愈合的确切机制尚不清楚.
研究的目的:
- 为了研究叶黄素在TSPCs中的调节作用.
- 为了阐明涉及的分子机制.
- 为了确定白对肌修复的影响.
主要方法:
- 隔离的老鼠TSPCs被用不同度的勒丁治疗.
- 评估了TSPC活力,衰老,亡和自.
- 分析了分子信号通路 (AKT/mTOR,MAPK,STAT5) 和瘦素受体 (LEPR) 表达.
- 用大鼠的阿基里斯肌损伤模型来评估素在体内对愈合的影响,有或没有拉帕米辛治疗.
主要成果:
- 莱普降低了TSPC活力,促进了衰老,并以剂量依赖的方式改变了细胞外基因表达.
- 丁激活了TSPC中的AKT/mTOR信号通路.
- 拉巴胺素,但不抑制AKT,减轻了叶黄素诱导的TSPC衰老.
- 在体内,瘦素显著延迟了肌愈合,这种效应被拉帕米辛逆转.
结论:
- 素诱导TSPC细胞缺陷,并通过AKT/mTOR途径损害肌修复.
- 升高的瘦素水平在肌病和肌撕裂中起着重要作用.
- 针对RAPAMYCIN等药物以AKT/mTOR途径为目标,可能为与高勒素水平相关的肌损伤提供治疗策略.
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