在支持CSFV复制和抑制RLR信号传输方面,ER-Golgi货物受体LMAN1的双重作用
Kailiang Han1, Zhaoyu Chang1, Ning Li1
1College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China.
Journal of virology
|March 3, 2026
概括
主体蛋白质LMAN1通过结合病毒聚合酶和抑制抗病毒反应促进古典猪瘟病毒 (CSFV) 复制. 失去LMAN1会阻碍CSFV的扩散,并增强先天免疫力,从而确定LMAN1是病毒与宿主相互作用的关键目标.
科学领域:
- 病毒学和免疫学 病毒学和免疫学
- 分子生物学分子生物学
- 宿主-病原体相互作用
背景情况:
- 经典猪瘟病毒 (CSFV) 是对猪健康的重大威胁.
- CSFV用于复制和免疫逃避的宿主因素尚未完全理解.
- 主体货物受体LMAN1在CSFV感染中的作用以前是未知的.
研究的目的:
- 研究LMAN1在CSFV感染中的功能和机制.
- 为了确定LMAN1是否影响CSFV复制和宿主抗病毒反应.
- 为了探索LMAN1作为潜在的抗病毒目标.
主要方法:
- 在感染CSFV的猪和细胞中分析LMAN1表达.
- 在LMAN1中进行了敲击和过度表达的实验.
- 研究LMAN1与病毒成分 (NS5B) 的相互作用.
- 转录组分析以评估LMAN1对抗病毒信号通路 (RLR-MAVS) 的影响.
主要成果:
- 在CSFV感染后,LMAN1的表达上调.
- LMAN1对于有效的CSFV复制是必不可少的,直接与病毒NS5B联系在一起.
- 通过抑制RIG-I类受体 (RLR) -MAVS通路,限制IRF3和NF-κB激活,LMAN1对抗病毒信号进行负调节.
结论:
- LMAN1是一个关键的宿主因子,在CSFV感染中具有双重作用:促进病毒RNA合成和逃避宿主免疫力.
- LMAN1的碳水化合物识别域 (CRD) 对于抑制干扰素反应至关重要.
- LMAN1代表了针对CSFV的抗病毒干预的新目标.
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