通过PGAM5-Drp1信号传递,RIPK3会导致糖尿病细胞病的线粒体功能障碍和白蛋白尿症
Jeong Suk Kang1, Nam-Jun Cho2, Seong Woo Lee3
1Department of Internal Medicine, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea; Institute of Tissue Regeneration, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea.
Metabolism: clinical and experimental
|August 1, 2024
概括
受体相互作用蛋白激酶3 (RIPK3) 通过促进细胞损伤和线粒体功能障碍,驱动糖尿病病 (DKD) 的损伤. 抑制RIPK3可能为DKD提供新的治疗策略.
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
- 糖尿病学 糖尿病学
背景情况:
- 受体相互作用蛋白激酶3 (RIPK3) 涉及到亡和纤维化.
- 在糖尿病病 (DKD) 中,RIPK3在细胞损伤中的特定作用和机制尚不清楚.
- 这项研究调查了RIPK3在DKD中的球损伤中的参与.
研究的目的:
- 确定RIPK3在DKD中的表达和临床意义.
- 阐明 RIPK3 在 podocyte 损伤和 mitochondrial 功能障碍中的作用.
- 探索RIPK3作为DKD的潜在治疗点.
主要方法:
- 对人类DKD脏和DKD动物模型中的RIPK3表达的分析.
- 在2型糖尿病队列中测量了血RIPK3水平,与功能指标 (eGFR,UACR) 相对应.
- 在Ripk3淘汰赛和野生型小鼠中诱导DKD,以及单细胞RNA测序和体外 podocyte 研究.
主要成果:
- 在DKD球粒细胞的受体细胞中,RIPK3的表达升高,与albuminuria和受体细胞损失相关.
- 在白尿性糖尿病患者中,血RIPK3水平显著更高,并预测病进展.
- 在小鼠中,RIPK3缺乏改善了在DKD中通过PGAM5-Drp1通路介导的白蛋白尿,足细胞损失和线粒体功能障碍.
结论:
- RIPK3表达作为DKD中功能下降的生物标志物.
- 通过MLKL-PGAM5-Drp1信号传递,RIPK3通过调节线粒体裂变来促进糖尿病下细胞病变.
- 准RIPK3为管理DKD提供了潜在的治疗途径.
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