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猪干扰素诱导的跨膜蛋白抑制了猪流行性腹病毒的复制

Qian Zhang¹, Qinglan Wei¹, Tong Guan¹

¹Guangdong Provincial Key Laboratory of Zoonosis Prevention and Control, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China; Key Laboratory of Animal Vaccine Development, Ministry of Agriculture and Rural Affairs, Guangzhou, China; National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, China.

Veterinary microbiology

|May 14, 2025

概括

猪干扰素诱导的跨膜蛋白 (SwIFITMs) 通过抑制病毒进入来对抗猪流行性腹病毒 (PEDV). SwIFITM2表现出最强的抗病毒活性,可能通过与病毒蛋白和宿主细胞组件 (如caveolin-1.1) 相互作用.

科学领域:

病毒学病毒学
免疫学免疫学免疫学
分子生物学分子生物学

背景情况:

猪流行性腹病毒 (PEDV) 在全球猪业造成重大经济损失.
干扰素刺激基因 (ISG) 编码抗病毒免疫作用因子,但猪干扰素诱导的跨膜蛋白 (SwIFITM) 在PEDV中的作用尚未研究.

研究的目的:

为了研究SWIFITMs.的抗PEDV作用.
阐明SWIFITMs抑制PEDV复制的机制.

主要方法:

在干扰素和PEDV治疗后对猪IFITMmRNA水平的分析.
在细胞系中抑制和过度表达SWIFITM,以评估PEDV复制.
与病毒蛋白 (S2,N) 和细胞标记物 (caveolin-1,clathrin) 进行 SwIFITM2 的同定位研究.

主要成果:

干扰素和PEDV可以提高猪IFITM mRNA的调节.
淘汰SWIFITM1a,-1b和-2显著减少了PEDV复制.
SwIFITM2显示出最强大的抗PEDV效应,抑制病毒进入.
SwIFITM2与PEDV S2和N蛋白相互作用,并与caveolin-1共定位,这表明PEDV被限制在caveolin-1内.

结论:

SwIFITM2在对PEDV的抗病毒防御中起着重要作用.
SwIFITM2可能通过调节宿主细胞途径,涉及卡维奥林-1来发挥其保护作用.
了解SWIFITM介导的抗病毒机制,可以了解PEDV病原和宿主防御策略.

关键词:

卡维奥林 - 1 - 一个洞穴.内细胞通路的内细胞通路.干扰素可诱导的跨膜蛋白质猪流行性腹病毒病毒

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