综合蛋白质组学方法识别了病毒和宿主蛋白质上的酸化位,这些酸化位调节西尼罗河病毒感染
Zachary Walter1, Minghua Li2, Melissa Molho1
1Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA 19107, USA.
Cell reports
|May 17, 2025
概括
西尼罗病毒感染改变了宿主细胞蛋白质. 研究人员确定了限制病毒复制的HERPUD1上调和宿主激酶激活 (AMPKβ1,PAK2),为宿主病毒相互作用提供了新的见解.
科学领域:
- 病毒学 病毒学
- 蛋白质组学是指蛋白质组学.
- 细胞生物学 细胞生物学
背景情况:
- 病毒操纵宿主蛋白质组以促进复制.
- 宿主细胞使用蛋白质调节,包括翻译后修改,以对抗病毒感染.
研究的目的:
- 在西尼罗病毒 (WNV) 感染期间使用质谱测量来定义蛋白质组变化.
- 确定调节WNV复制的宿主因素和病毒修饰.
主要方法:
- 基于WNV感染细胞的质谱蛋白质组分析.
- 对宿主和病毒蛋白质的翻译后修饰的识别和表征.
主要成果:
- 观察到HERPUD1的升级,限制了WNV复制,而不依赖于ER相关降解 (ERAD).
- 确定了影响病毒复制的WNV NS3酸化部位.
- 揭示了宿主激酶AMPKβ1 (通过S108酸化) 和PAK2 (通过S141酸化) 的激活,通过限制病毒基因组翻译赋予抗病毒活性.
结论:
- 这项研究阐明了WNV感染期间的关键蛋白质组变化.
- 识别了宿主因素和修改,为了解宿主病毒相互作用和开发抗病毒策略提供了资源.
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