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鉴定参与乙型肝炎病毒基因组包装的宿主蛋白

Isabella T Whitworth¹, Sofia Romero^2,3,4, Abena Kissi-Twum^2,4

¹Department of Chemistry, University of Wisconsin-Madison College of Letters and Sciences, Madison, Wisconsin 53706, United States.

Journal of proteome research

|July 30, 2024

概括

研究人员确定了超过250种与乙型肝炎病毒 (HBV) 前基因组RNA (pgRNA) 相互作用的宿主蛋白. 验证了AURKA,YTHDF2和ATR三种关键蛋白质,并发现它们对于有效的pgRNA封装到核体中至关重要.

科学领域:

病毒学病毒学
分子生物学分子生物学
宿主-病原体相互作用

背景情况:

乙型肝炎病毒 (HBV) 的生命周期严重依赖于将其基因前RNA (pgRNA) 包装成核囊体.
虽然已知病毒因素,但宿主蛋白在这种pgRNA包装过程中的作用仍然在很大程度上未被描述.

研究的目的:

在包装过程中识别和描述与HBVpgRNA相互作用的宿主蛋白质.
阐明这些宿主病毒相互作用在HBV复制中的功能意义.

主要方法:

使用包装合格和包装不合格的HBV基因组对pgRNA-蛋白相互作用的比较分析.
对pgRNA相关蛋白质的分离和表征.
使用RNA免疫沉降qPCR (RIP-qPCR) 验证宿主蛋白相互作用.
通过siRNA敲除和封装效率的测量对宿主蛋白质作用的功能评估.

主要成果:

确定了250多种宿主蛋白质,首选与来自包装竞争型HBV的pgRNA相关.
这些包括已知参与囊形成,病毒基因表达和基因组结合的蛋白质.
三种选择的蛋白质 (AURKA,YTHDF2,ATR) 证实与pgRNA的关联,并且对于有效的pgRNA封装至关重要.

结论:

与病毒工程相结合的比较互动组分析对于发现功能上显著的宿主病毒相互作用是有效的.
主体蛋白质AURKA,YTHDF2和ATR在HBVpgRNA包装步骤中起着至关重要的作用.
这项研究为了解宿主因子在病毒复制周期中的参与提供了一个框架.

关键词:

在RNA结合蛋白质中的RNA结合蛋白.RNA与蛋白质的相互作用乙型肝炎病毒的感染.主体-病原体相互作用病毒包装病毒包装病毒蛋白质组学病毒蛋白质组学

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