经典猪瘟病毒非结构蛋白5B劫持宿主METTL14介导的m6A修饰以抵消宿主抗病毒免疫反应
Jing Chen1, Hui-Xin Song1, Jia-Huan Hu2
1MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China.
PLoS pathogens
|March 29, 2024
概括
经典猪瘟病毒 (CSFV) 通过劫持METTL14来抑制TLR4信号,以逃避宿主免疫. 这种病毒策略涉及m6A的修饰,提供潜在的向对抗CSFV的抗病毒疗法.
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:
- 经典猪瘟 (CSF) 在全球范围内造成重大经济损失.
- 经典猪瘟病毒 (CSFV) 逃避天生的免疫力,导致持续的感染.
研究的目的:
- 为了阐明CSFV免疫逃避的分子机制.
- 调查m6A修饰在CSFV扩散中的作用.
主要方法:
- 在体内和体外感染模型.
- 甲基化RNA免疫沉降测序 (MeRIP-seq).
- 对蛋白质相互作用和mRNA降解的分析.
主要成果:
- 感染CSFV会增加m6A修饰和METTL14表达.
- CSFV非结构蛋白5B通过HRD1.1防止METTL14降解.
- METTL14针对TLR4进行甲基化,导致其降解和抑制NF-κB信号传递.
结论:
- CSFV利用m6A修饰和METTL14来抑制宿主天生的免疫反应.
- 向METTL14为控制CSFV感染提供了一个潜在的抗病毒策略.
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