汉坦病毒通过TRIM2525准RLR信号通路来抑制I型干扰素反应
Yinghua Zhao1, Lihe Che2, Mingming Pan3
1College of Wildlife and Protected Area, Northeast Forestry University, Harbin, 150000, Heilongjiang Province, China; Department of Infectious Diseases and Infectious Diseases and Pathogen Biology Center, The First Hospital of Jilin University, 1 Xinmin Street, Changchun, 130021, Jilin Province, China.
Virology
|December 4, 2023
概括
汉坦病毒蛋白NP和Gc通过干扰RIG-I类受体通路来阻断宿主免疫系统. 这种相互作用抑制了I型干扰素的产生,这对抗汉坦病毒 (HTNV) 的抗病毒防御至关重要.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 汉丹病毒 (HTNV) 导致带有综合征 (HFRS) 的出血发烧.
- HTNV抑制宿主天生的免疫反应,特别是I型干扰素 (IFN-I) 的产生.
研究的目的:
- 为了确定HTNV核体蛋白 (NP) 和糖蛋白 (Gc) 调节的宿主因素.
- 阐明HTNV NP和Gc蛋白质抑制IFN-I生产的机制.
主要方法:
- 转录组分析以确定宿主因素.
- 对视网膜酸诱导的基因I (RIG-I) 类受体 (RLR) 途径的研究.
- 分析病毒蛋白和宿主因子之间的蛋白质-蛋白质相互作用.
主要成果:
- 通过操纵RLR通路,HTNV NP和Gc蛋白质通过操纵RLR通路来抑制宿主IFN-I的产生.
- 在MAVS的上游,NP和GC都针对RIG-I和MDA-5.
- Gc比NP更强烈地抑制了IFN-I反应.
- NP和Gc竞争性地抑制TRIM25和RIG-I/MDA5之间的相互作用,抑制RLR信号传递.
结论:
- HTNV NP和Gc蛋白与TRIM25相互作用,抑制宿主抗病毒免疫力.
- 这种对RLR信号的病毒干扰是HTNV的关键病原机制.
- 这项研究揭示了HTNV蛋白质与宿主免疫反应之间的显著交叉对话.
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