Upf1蛋白质限制了EV-A71病毒复制的发生.
Peng Xu1, Wei Tong2, Chen-Yen Kuo3
1Xiangyang No. 1 People's Hospital and Hubei University of Medicine; Hubei Province, China.
Microbes and infection
|September 21, 2023
概括
肠道病毒A71 (EV-A71) 降低了Upf1 (Up-frameshift蛋白1),这是无意中介衰变 (NMD) 的关键因素. 抑制NMD增强了EV-A71的复制,这表明NMD/Upf1是治疗目标.
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:
- 肠道病毒A71 (EV-A71) 导致手足口病和囊泡性喉炎.
- Upf1 (Up-frameshift蛋白1) 对于无意中介衰变 (NMD) 至关重要,这是细胞过程降解异常mRNA的细胞过程.
- Upf1作为一种宿主因子,可以抑制病毒复制.
研究的目的:
- 为了研究Upf1在EV-A71感染细胞中的作用.
- 为了确定Upf1是否影响EV-A71复制.
- 探索EV-A71感染对NMD通路的影响.
主要方法:
- 分析EV-A71感染的RD,Hela和293T细胞中的Upf1表达水平.
- 执行Upf1敲击和过度表达实验.
- 测量病毒RNA和后代病毒的产生.
- 评估阿斯巴拉金合成酶 (ASNS) 作为NMD指标的表达.
主要成果:
- 在EV-A71感染细胞中,Upf1的表达显著下调.
- 抑制Upf1增加了EV-A71RNA和后代病毒的产生.
- 过度表达Upf1降低了EV-A71RNA和后代病毒的产生.
- EV-A71感染导致ASNSRNA水平增加,表明抑制了NMD活动.
结论:
- Upf1对EV-A71复制不利,病毒对其进行下调有助于病毒的扩散.
- EV-A71感染抑制了宿主细胞NMD活动.
- NMD/Upf1途径代表了开发抗皮科纳病毒治疗药物的潜在目标.
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