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通过与塞内卡病毒A 2 C蛋白相互作用,RSAD2抑制病毒复制

Lei Hou^1,2, Zhi Wu³, Penghui Zeng^4,5

¹College of Veterinary Medicine, Yangzhou University, Yangzhou, China. hlbj09@163.com.

Veterinary research

|September 28, 2024

概括

猪中塞内卡病毒A (SVA) 感染被RSAD2酶抑制,该酶与病毒2C蛋白相互作用. 这种由干扰素信号诱导的相互作用为控制SVA爆发提供了潜在的策略.

科学领域:

兽医病毒学兽医病毒学
分子病毒学分子病毒学
免疫学免疫学免疫学

背景情况:

塞内卡病毒A (SVA) 由于囊泡性疾病,导致猪生产造成重大经济损失.
RSAD2是一种激进的S-adenosylmethionine酶,具有广泛的抗病毒活性.
目前尚不清楚SVA和RSAD2之间的相互作用和监管机制.

研究的目的:

阐明SVA和RSAD之间的监管关系2.
研究RSAD2抑制SVA复制的机制.
为了确定SVA感染的潜在治疗点.

主要方法:

定量实时PCR (qRT-PCR) 用于测量RSAD2mRNA水平.
西方涂抹评估病毒蛋白表达和RSAD2相互作用.
病毒定位测试用于确定病毒载量.
免疫沉试验用于识别相互作用的病毒蛋白.
局部定向突变发生以映射RSAD2相互作用域.
使用抑制剂和基因敲除的干扰素信号通路分析.

主要成果:

在SVA感染上调RSAD2mRNA表达.
RSAD2表达显著抑制了SVA复制,降低了病毒蛋白VP1水平,病毒标位和感染细胞数量.
特别是RSAD2与SVA 2C蛋白相互作用,RSAD2的43-70氨基酸对这种相互作用和抗病毒活性至关重要.
RSAD2诱导是由I型干扰素 (IFN-I) 通过Janus激酶信号转换器和转录激活器 (JAK-STAT) 途径传递信号的.
抑制JAK-STAT通路 (使用Ruxolitinib或JAK1敲击) 降低了RSAD2表达及其对SVA的抗病毒功效.

结论:

通过与病毒2C蛋白相互作用,RSAD2有效地抑制了塞内卡病毒A的复制.
IFN-I/JAK-STAT通路对于诱导RSAD2-介导的抗病毒活性对抗SVA.至关重要.
针对RSAD2-2C蛋白相互作用或IFN-I/JAK-STAT通路,为SVA预防和控制提供了一个有希望的策略.

关键词:

2 C 蛋白质是什么?在JAK-STAT路径上.在RSAD2中,使用RSAD2.在SVA复制过程中,SVA复制互动互动互动互动互动.

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