伪狂犬病病毒UL41通过JAK/STAT路径劫持IFN响应,而细胞TRIM21通过K48泛化阻止它
Xue Li1,2, Jiawei Zheng1, Guoqing Zhang1
1College of Animal Sciences, State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Jilin University, Changchun, China.
Transboundary and emerging diseases
|December 4, 2025
概括
伪狂犬病病毒 (PRV) 通过其UL41蛋白质降解关键mRNA,以JAK/STAT途径为目标,从而逃避宿主免疫. 主体TRIM21蛋白对抗PRV UL41,提供潜在的抗病毒标.
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:
- 伪狂热病毒 (PRV) 是一个重要的动物病原体.
- PRV感染涉及复杂的宿主-病原体相互作用和免疫逃避策略.
- 干扰素 (IFN) 信号传输对于抗病毒防御至关重要.
研究的目的:
- 为了研究PRV免疫逃避的机制.
- 阐明PRV UL41蛋白在宿主-病原体相互作用中的作用.
- 为了确定与PRV UL41相互作用的宿主因素及其功能后果.
主要方法:
- 分析PRV对IFN信号通路 (IFN-β,IFN-α,JAK/STAT) 的影响.
- 确定PRV UL41蛋白与宿主因子之间的相互作用 (PABPC1,TRIM21).
- 研究TRIM21在调节PRV UL41活性和通过ubiquitination降解中的作用.
主要成果:
- PRV感染抑制了IFN-β,但提高了IFN-α的调节.
- PRV UL41通过保留的动机 (KUUUCY,CSDGGA) 准并降解JAK/STAT通路中的特定mRNA.
- 主体TRIM21通过K48-ubiquitin-proteasome通路调解其降解,从而抵消JAK/STAT抑制,从而对PRV UL41进行对抗.
结论:
- PRV UL41是免疫规避的关键病毒因子,通过降解标mRNA来抑制IFN-I信号传导.
- TRIM21作为宿主限制因子,对抗PRV UL41的抑制作用.
- 了解PRV UL41-TRIM21相互作用,可以了解病毒病原和潜在的抗病毒策略.
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