LncRNA DGCR5编码的多RIP通过抑制BMSC中的β-catenin的核定位来加剧SONFH
Weiqian Jiang1, Yu Chen1, Mingjie Sun1
1Department of Orthopedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
Cell reports
|August 13, 2023
概括
从lncRNA DGCR5中获得的一种新,RIP,促进骨髓介质干细胞 (BMSC) 脂肪生成,并恶化骨头 (SONFH) 类固醇诱导的骨髓缩. 针对RIP可能为SONFH提供治疗策略.
科学领域:
- 分子生物学分子生物学
- 干细胞生物学 干细胞生物学
- 整形外科 整形外科 整形外科
背景情况:
- 类固醇诱导的股骨头骨 necrosis (SONFH) 的进展与骨髓中介质干细胞 (BMSC) 的分化有关.
- 长非编码RNAs (lncRNAs) 在细胞分化中发挥作用,但它们在SONFH中的特定功能尚未完全理解.
研究的目的:
- 调查lncRNA DGCR5及其编码在BMSC分化和SONFH病变发生中的作用.
- 为了确定SONFH的潜在治疗点.
主要方法:
- 在体外研究BMSC差异化.
- 涉及RIP,RAC1,PAK1和β-catenin的分子机制分析.
- 在体内实验中,使用SONFH.的老鼠模型进行实验.
主要成果:
- lncRNA DGCR5编码了一个名为RIP (Rac1无活化) 的多.
- RIP促进了BMSC脂肪生成的分化,并加剧了SONFH.
- RIP通过与RAC1结合,使RAC1/PAK1级联失活,从而减少β-catenin酸化和核定位.
- 在老鼠中,RIP的过度表达导致骨疾病和脂肪细胞积累,这被RAC1过度表达逆转.
结论:
- 由lncRNA DGCR5编码的RIP是一种,通过抑制RAC1/PAK1/β-catenin通路,驱动BMSC脂肪生成并恶化SONFH.
- RIP 是一种潜在的治疗标,用于管理骨头的类固醇诱导骨硬化.
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