与非洲猪瘟病毒毒力相关因子MGF300-4L相互作用的宿主蛋白鉴定与分析
文献类型: 中文期刊
关键词: 非洲猪瘟病毒;MGF300-4L蛋白;STAT1;毒力相关因子
期刊名称:中国兽医学报
ISSN: 1005-4545
年卷期: 2025 年
页码:
收录情况: 北大核心(2023版) ; ; CSCD(2025-2026年度) ; ; 科技核心(2024版) ; ; 农林核心(2024版)
摘要: MGF300-4L蛋白已被证实是非洲猪瘟病毒(African swine fever virus, ASFV)的一个毒力相关因子,其作用机制是通过分子伴侣介导的自噬降解IKKβ并且增加IκBα的稳定性,从而抑制NF-κB信号通路调控的IL-1β和TNF-α的产生。为了筛选与MGF300-4L相互作用的宿主蛋白,本研究将MGF300-4L的真核表达质粒转染至PK-15细胞,利用免疫沉淀-质谱分析(immunoprecipitation-mass spectrometry, IP-MS)的方法筛选与MGF300-4L相互作用的宿主蛋白,并进行GO和KEGG通路富集分析;进一步通过分子对接分析、免疫共沉淀和激光共聚焦试验验证与MGF300-4L相互作用的宿主蛋白。IP-MS结果表明,有145个宿主蛋白可能与MGF300-4L存在相互作用。GO和KEGG通路富集分析显示,这145个宿主蛋白主要参与代谢过程、细胞过程以及先天免疫反应过程。通过分子对接预测、免疫共沉淀及激光共聚焦试验证实了MGF300-4L与STAT1的相互作用。本研究为深入理解MGF300-4L与宿主蛋白的相互作用提供了重要线索和靶点。
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