线粒体蛋白酶ClpP缺乏保护糖尿病病中的管间损伤
Huafen Wang1, Yifei Liu1, Jialu Liu2
1Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha 410011, Hunan, China.
International immunopharmacology
|October 7, 2025
概括
线粒体未折叠蛋白反应 (UPRmt) 组成部分ClpP在糖尿病病 (DKD) 中升高,恶化损伤. 减少ClpP通过抑制过度的UPRmt激活来减轻损伤,这表明ClpP是DKD的治疗标.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 线粒体质量控制 (MQC) 对脏健康至关重要,其不平衡有助于糖尿病脏病 (DKD).
- 线粒体未折叠蛋白反应 (UPRmt) 是一个关键的MQC途径,其蛋白质分解成分,Caseinolytic peptidase P (ClpP),在病理学中没有明确的作用.
研究的目的:
- 为了研究ClpP在DKD病变发生中的作用.
- 为了确定是否针对ClpP可以改善DKD的损伤.
主要方法:
- 在人类DKD脏和db/db小鼠模型中评估了ClpP表达.
- 在高葡萄糖条件下,在体内和体外 (HK-2细胞) 使用了ClpP淘汰 (shRNA/siRNA).
- 检查的UPRmt标志物 (HSP60,HSP10,ATF5),氧化应激,亡和纤维化.
主要成果:
- 在DKD脏中,ClpP表达升高,与MQC标志物,氧化应激,亡和纤维化相关.
- 在糖尿病小鼠和高葡萄糖治疗的HK-2细胞中,ClpP knockdown减少了管管损伤,亡和氧化应激.
- 过度表达ClpP会加剧高葡萄糖引起的损伤,而抑制UPRmt则部分扭转了这些影响.
结论:
- 升高的ClpP通过促进过度的UPRmt激活,氧化应激和纤维化来推动DKD的进展.
- 抑制ClpP可改善脏氧化应激和DKD中的管间损伤.
- ClpP代表了治疗糖尿病病的有前途的治疗标.
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