化学素刺激的HSP90AB1 SUMOylation促进单细胞激活和ERK1/2通过β2整合素的酸化
Lili Wu1, Guona Chen2, Fan Wu2
1Laboratories of Thrombosis and Vascular Biology, Suzhou Ninth Hospital affiliated to Soochow University, Suzhou, Jiangsu, China; Cyrus Tang Medical Institute, Soochow University, Suzhou, Jiangsu, China.
Cellular signalling
|July 31, 2025
概括
化学素通过增加蛋白质的SUMOylation (小型泛胺类修饰剂) 来增强动脉样硬化中的单细胞粘附,从而激活ERK1/2酸化. 抑制SUMOylation可以逆转这些效应,揭示了一个新的治疗点.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 心血管研究研究心血管研究
背景情况:
- 通过SUMOylation进行翻译后修饰对于诸如动脉样硬化等心血管疾病至关重要.
- 化学素通过β2整合素激活单细胞粘附,但下游机制尚不清楚.
研究的目的:
- 阐明SUMOylation在化学素诱导的单细胞激活和粘附中的作用.
- 确定单细胞中化学素,SUMOylation和ERK1/2酸化之间的分子机制.
主要方法:
- 单细胞 SUMO2/3 结合分析.
- 评估化学素诱导的单细胞激活和粘附与或没有SUMOylation抑制剂ML-792.2.
- 对ERK1/2酸化的分析.
- 免疫沉和LC-MS/MS以确定蛋白质相互作用.
主要成果:
- 化学素通过β2整合素在单细胞中显著增加了蛋白质SUMO2/3的结合.
- SUMOylation 抑制剂 ML-792 逆转了化学素诱导的单细胞激活和粘附.
- 化学素以SUMOylation依赖的方式增强了ERK1/2酸化.
- 确定HSP90AB1与SUMO2/3直接相互作用,通过介导化学素诱导的SUMOylation和ERK1/2酸化.
结论:
- 化学素诱导的蛋白质SUMOylation,由β2整合素和HSP90AB1介导,促进ERK1/2酸化,导致单细胞激活和粘附.
- 这一途径为动脉样硬化病原和潜在的治疗点提供了新的见解.
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