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ZNF33B通过控制非结构蛋白5的HSPB1/8介导的SUMOylation来促进日本脑炎病毒的复制

Jian Du^1,2,3, Chunwei Li^1,2,3, Jinyan Zhang^1,2,3

¹National Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, China.

Journal of virology

|September 8, 2025

概括

指蛋白33B (ZNF33B) 通过稳定病毒RNA和促进病毒NS5蛋白的SUMOylation来增强日本脑炎病毒 (JEV) 复制. 这项研究揭示ZNF33B招募HSPB1/8来促进NS5SUMOylation,这是JEV传播的关键机制.

科学领域:

病毒学病毒学
分子生物学分子生物学
免疫学免疫学免疫学

背景情况:

日本脑炎病毒 (JEV) 是一种显著的病毒,导致脑炎和生殖问题.
调节JEV复制的宿主因素尚未完全理解.
指蛋白33B (ZNF33B) 被确定为对JEV感染至关重要的宿主因素.

研究的目的:

阐明ZNF33B在JEV感染中的精确功能和机制.
了解ZNF33B如何影响病毒RNA稳定性和蛋白质修饰.
为了确定参与ZNF33B介导的JEV复制的宿主蛋白质.

主要方法:

基于CRISPR的功能性基因组查.
RNA免疫沉降试验. 检测.
免疫沉质谱法. 免疫沉质谱法.
西方涂抹用于检测蛋白质修饰 (SUMOylation,无处不在).

主要成果:

ZNF33B与JEVRNA结合,增强其在复制过程中的稳定性.
ZNF33B转移到细胞质中与病毒复制复合体结合.
ZNF33B通过促进其SUMOylation和抑制其多基化来稳定JEV非结构蛋白5 (NS5).
热冲击蛋白HSPB1和HSPB8被确定为NS5SUMOylation的媒介,由ZNF33B招募.

结论:

ZNF33B对于JEV复制至关重要,通过SUMOylation增强病毒RNA稳定性和NS5蛋白稳定性.
ZNF33B招募HSPB1/8以促进NS5的SUMOylation,抵消无处不在和保护体降解.
这项研究揭示了一个新的JEV复制机制,涉及宿主翻译后修改机制.
向ZNF33B或NS5 SUMOylation提供了针对JEV和相关的黄状病毒的潜在治疗策略.

关键词:

日本脑炎病毒病毒.在 NS5 NS5 NS5 NS5 这就是SUMOylation的作用.在ZNF33B中,它是ZNF33B.

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