干扰素信号的蝙蝠特异性适应和GBP1有助于增强抗病毒能力
Victoria Gonzalez1,2, Briallen Lobb3, Jacob Côté4,5,6,7
1Laboratory of Zoonotic Viruses and Comparative Immunology, Vaccine and Infectious Disease Organization (VIDO), University of Saskatchewan, Saskatoon, SK, Canada.
Nature communications
|July 2, 2025
概括
蝙蝠拥有独特的干扰素通路,使它们能够耐受病毒感染,包括冠状病毒. 这些增强的抗病毒反应对于了解蝙蝠免疫力和动物传播疾病控制至关重要.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 进行比较的基因组学.
背景情况:
- 蝙蝠携带新出现的动物传染性病毒,对人类和动物健康构成风险.
- 蝙蝠病毒耐受性的机制,特别是干扰素反应,仍然不完全理解.
研究的目的:
- 描述两种蝙蝠物种脏细胞中的I型干扰素 (IFN) 信号通路.
- 确定有助于加强蝙蝠病毒控制的物种特异性适应.
- 研究蝙蝠对病毒免疫对抗性的耐药性,包括MERS-CoV.
主要方法:
- 在Pteropus alecto和Eptesicus fuscus脏细胞系中对I型IFN通路的比较分析.
- 干扰素刺激细胞的转录组分析.
- 抗病毒基因和基因的识别和功能性表征.
主要成果:
- 在IFNβ信号传递中确定了明确的STAT1/STAT2作用,保持了恒定的抗病毒状态.
- 蝙蝠的IFNβ信号抵抗了MERS-CoV的免疫对抗性,解释了冠状病毒的耐受性.
- 干扰素刺激的基因IFIT1和GBP1显示出广泛的抗病毒活性.
- 发现E. fuscus GBP1中的一个功能动机 (AV1) 限制了Eptesipoxvirus的复制.
结论:
- 蝙蝠表现出进化的,增强的干扰素介导的抗病毒反应.
- 这些适应性有助于它们作为各种病毒的储存库的能力,而不会屈服于疾病.
- 了解这些机制对于管理动物传播疾病风险至关重要.
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