FMDV 3A与PDCD10合作,通过抑制VISA介导的先天免疫来促进FMDV的复制
Qian Li1,2,3, XiaoFeng Nian1, XiaoFen Shang2
1China-Malaysia National Joint Laboratory, Biomedical Research Center, Life Science and Engineering College, Northwest Minzu University, Lanzhou, China.
Journal of virology
|November 26, 2025
概括
编程细胞死亡蛋白10 (PDCD10) 作为对RNA病毒的先天免疫反应的负调节剂. PDCD10与口病病毒 (FMDV) 3A蛋白合作,抑制干扰素β的产生并促进病毒复制.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 分子生物学分子生物学
背景情况:
- 像RIG-I类受体 (RLRs) 启动对RNA病毒的先天免疫反应.
- 调节RLR信号的宿主因素尚未完全理解.
- 编程细胞死亡蛋白10 (PDCD10) 已知在细胞发育和增殖中的作用.
研究的目的:
- 研究PDCD10在RNA病毒识别和先天免疫信号传递中的作用.
- 阐明PDCD10影响干扰素-β (IFN-β) 生产的机制.
- 为了确定PDCD10和口疫病毒 (FMDV) 3A蛋白之间的相互作用.
主要方法:
- 使用了病毒感染模型 (仙台病毒,FMDV).
- 对PDCD10表达水平进行了监测.
- 采用了基因淘汰和过度表达技术.
- 分析了蛋白质与蛋白质之间的相互作用 (PDCD10-VISA,VISA-IRF3).
- 测量IFN-β促进剂活性和分泌.
主要成果:
- 病毒感染稍微增加了PDCD10表达.
- 过度表达PDCD10抑制了病毒诱导的IFN-β促进体的激活和分泌.
- PDCD10与VISA相互作用,扰乱了VISA-IRF3复合体,并影响了IFN-β的产生.
- 通过抑制IFN-β的产生,PDCD10促进了FMDV的复制.
- FMDV 3A蛋白与PDCD10合作,增强抑制IFN-β的产生.
结论:
- PDCD10作为RNA病毒的先天免疫反应的新型负调节剂.
- PDCD10通过干扰VISA介导的信号通路来抑制IFN-β的产生.
- PDCD10,与FMDV 3A结合,通过抑制宿主抗病毒防御,促进病毒复制.
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