USP19稳定了TAK1以调节HK-2细胞中高葡萄糖/自由脂肪酸引起的功能障碍
Xiao-Hui Yan1, Yin-Na Zhu2, Yan-Ting Zhu3
1Kidney Disease and Dialysis Center, Shaanxi Provincial People's Hospital, Xi'an, 710068, China.
Current medical science
|July 5, 2024
概括
乌比基特异性酶19 (USP19) 通过稳定TAK1.1,在高葡萄糖和脂肪酸条件下促进细胞功能障碍. 抑制USP19可能为糖尿病病提供治疗策略.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 腎臟病學 (nephrology) 是一種醫學.
背景情况:
- 肥胖引起的损伤是糖尿病病 (DN) 进展的重要因素.
- 了解细胞功能障碍背后的分子机制,以应对代谢压力,对于开发有效的DN治疗方法至关重要.
研究的目的:
- 为了研究在高葡萄糖 (HG) 和自由脂肪酸 (FFA) 暴露的HK-2细胞中,泛素特异性酶19 (USP19) 的作用.
- 为了确定USP19和TGF-β激活激酶1 (TAK1) 在代谢应激诱导的细胞损伤的背景下之间的关联.
主要方法:
- 用HG和FFA的组合对待HK-2细胞.
- 使用qRT-PCR和免疫血栓测试量USP19的表达.
- 细胞活力,增殖,细胞周期和细胞亡被评估使用CCK-8,EDU和流细胞计.
- 通过共免疫沉和免疫阻塞分析了蛋白质相互作用和无处不在水平.
主要成果:
- 在HG+FFA治疗的HK-2细胞中,USP19的表达显著上调.
- USP19的敲击减轻了HG+FFA诱导的生长抑制,亡和线粒体功能障碍 (PINK1/Parkin通路受损,ROS增加).
- USP19通过duebiquitination稳定了TAK1蛋白,TAK1的增加逆转了USP19敲击诱导的表型变化.
结论:
- 通过稳定TAK1.1,USP19在联合HG和FFA刺激下加剧了HK-2细胞功能障碍.
- USP19代表了减轻糖尿病病中损伤的潜在治疗标.
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