管状CD44在通过NF-κB p65介导的线粒体功能障碍加重AKI中发挥着关键作用
Jiewu Huang1, Ping Meng2, Ye Liang1
1Division of Nephrology, Nanfang Hospital, Southern Medical University, National Clinical Research Center for Kidney Disease, State Key Laboratory of Organ Failure Research, Guangdong Provincial Institute of Nephrology, Guangdong Provincial Key Laboratory of Renal Failure Research, Guangzhou, China.
Cell death & disease
|February 20, 2025
概括
分化-44集群 (CD44) 通过损害线粒体功能和促进细胞死亡,加剧急性损伤 (AKI). 抑制CD44显示为AKI的治疗策略有前途.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 急性损伤 (AKI) 是一种普遍存在的疾病,其潜在机制尚不清楚.
- 细胞表面糖蛋白分化-44 (CD44) 的集群已被涉及到AKI中,但其确切的作用仍未被定义.
研究的目的:
- 阐明CD44在AKI病变发生中的作用.
- 为了研究CD44影响损伤的分子机制.
- 评估CD44作为AKI的潜在治疗点.
主要方法:
- 利用AKI的小鼠模型与基因切除和CD44.4的宫外表达.
- 进行了转录组测序和脂管组学分析.
- 研究了CD44对线粒体生物发生,脂肪酸氧化和细胞死亡途径 (MAPK,NF-κB p65,PGC-1α,铁亡) 的影响.
主要成果:
- 在AKI期间,CD44表达在管中升高.
- 通过增强线粒体功能和脂肪酸氧化来保护CD44缺陷免受损伤.
- 宫外CD44表达恶化了线粒体平衡,促进了管状细胞亡,并加剧了AKI.
- CD44激活了MAPK和NF-κB的p65信号,导致PGC-1α抑制,线粒体功能障碍和亡.
- CD44促进了铁的摄入,有助于铁亡.
结论:
- CD44通过破坏线粒体平衡和促进细胞死亡途径,在AKI病变发生过程中发挥着关键作用.
- 向抑制CD44代表了缓解AKI的潜在治疗策略.
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