STING COPII ER 通过酸化开关引入出口贸易和信号
Yanan Nan1, Dongxiao Cui1,2, Jiajian Guo1
1School of Life Sciences, Beijing University of Chinese Medicine, Beijing, 102488, China.
概括
通过COPII和COPI贩运来控制来自内质网膜的STING蛋白运动. 在STING上,TBK1调节的信号决定了它在激活后将其运送到Golgi,提供治疗目标.
科学领域:
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- STING (干扰素基因刺激器) 信号通路对于先天免疫非常重要.
- 在循环GMP-AMP (cGAMP) 刺激后,控制从内分泌网膜 (ER) 控制STING贩运的机制尚未完全理解.
研究的目的:
- 阐明cGAMP诱导的来自ER的STING贩运机制.
- 确定STING介导免疫反应的新型调节信号和治疗点.
主要方法:
- 对STING蛋白的生物化学和结构分析.
- 涂层蛋白II (COPII) 囊泡复制试验. 涂层蛋白II (COPII) 囊泡复制试验. 涂层蛋白II (COPII) 囊泡复制试验. 涂层蛋白II (COPII) 囊泡复制试验.
- 基于细胞的测定用于研究STING局部化和IRF3酸化.
主要成果:
- 斯廷格尔的退出被COPII和COPI贩运所平衡.
- 两种新的TBK1-化分类信号 (pSGME和pFS) 在STING上调节其运输到cis-Golgi.
- TBK1激活发生在COPII囊泡上,而IRF3酸化仅限于ERGIC/cis-Golgi.
结论:
- STING贩运是通过COPII/COPI平衡和酸化依赖的分类信号来动态调节的.
- 通过TBK1介导的STING酸化推动了其从ER出口到戈尔吉.
- 在COPII囊泡中包装STING的抑制剂对炎症性疾病具有治疗潜力.
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