跨高尔基网络的绑定因素调节了TBK1的贩运,并促进了STING-IFN-I通道
Jinrui Wang1, Shenghui Niu1, Xiao Hu1
1Key Laboratory of Birth Defects and Related Diseases of Women and Children, Department of Pediatrics, West China Second University Hospital, State Key Laboratory of Biotherapy, Sichuan University, Chengdu, Sichuan, China.
Cell discovery
|March 18, 2025
概括
TGN结合因子对于STING-IFN-I免疫反应至关重要. 它们的衰老和衰老的减少会损害这种信号通路,影响天生的免疫力.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 这种cGAS-STING通路对于对细胞核DNA的天生的免疫力至关重要.
- 在跨戈尔吉网络 (TGN) 的STING激活会招募TBK1来诱导I型干扰素 (IFN-I).
- TBK1向TGN传输的机制在很大程度上仍未被描述.
研究的目的:
- 研究TGN连接因子在STING-IFN-I信号传输中的作用.
- 阐明TBK1被运送到TGN的机制.
- 检查衰老和衰老对TGN结合因子和STING信号传递的影响.
主要方法:
- 使用的小鼠模型中删除了TBC1D23.
- 研究了TBC1D23,FAM21和TBK1.1之间的蛋白质相互作用.
- 在老年小鼠和老化纤维细胞中分析了TGN结合因子水平.
主要成果:
- 对于STING-IFN-I信号传输,TGN连接因素是必不可少的.
- 特别是,TBC1D23的删除会损害STING-IFN-I,而不是STING-NF-κB的信号传输.
- TBC1D23通过WASH复合体 (FAM21) 促进TBK1内分体到TGN的转位.
- 在老年小鼠和衰老细胞中,TGN结合因子的水平下降.
结论:
- TGN结合因子是STING-IFN-I免疫反应的关键调节者.
- 降低衰老中的TGN结合因子可能导致异常的STING信号.
- 这突出了一个新的机制,将细胞衰老与免疫失调联系起来.
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