塞内卡山谷病毒3C蛋白酶阻断EphA2-介导的mTOR激活,以促进病毒复制
Yongyan Shi1, Zhi Wu1, Penghui Zeng1
1College of Veterinary Medicine, Yangzhou University, Yangzhou, China; Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China.
Microbial pathogenesis
|May 5, 2024
概括
塞内卡谷病毒 (SVV) 感染涉及病毒3C蛋白酶对产生红素的肝瘤受体A2 (EphA2) 的分裂. 这种裂变会损害EphA2的EfA2.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 塞内卡谷病毒 (SVV) 是一种新兴的猪病原体,导致囊泡性疾病,对猪健康和经济构成全球威胁.
- 产生红素的肝瘤受体A2 (EphA2) 在细胞信号通路中发挥作用,包括AKT/mTOR和自,但其与SVV的相互作用是未知的.
研究的目的:
- 为了阐明SVV感染和EphA2.2之间的调节关系.
- 研究SVV与EphA2相互作用的机制及其对病毒复制和自的影响.
主要方法:
- 在BHK-21和PK-15细胞的SVV感染.
- 分析EphA2蛋白质分解和病毒复制标记 (蛋白质表达,标位,负载).
- 对负责EphA2裂变的病毒蛋白进行查.
- 研究EphA2在自和mTOR通路激活中的作用.
主要成果:
- 在感染SVV的细胞中,EphA2进行蛋白质分解.
- 过度表达EphA2显著抑制SVV复制,表明抗病毒作用.
- SVV 3C蛋白酶 (3Cpro) 被确定为负责EphA2裂变的酶,取决于其蛋白酶活性.
- 过度表达EphA2通过激活mTOR途径并抑制自抑制SVV复制.
结论:
- SVV 3Cpro分裂EphA2以抵消其抗病毒活性,促进病毒复制.
- SVV 3Cpro和EphA2之间的相互作用突出了一个新的病毒逃避机制.
- 准这种分子相互作用是开发抗病毒疗法的潜在策略,可以对抗SVV.
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