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通过HIV-1 Vif抑制ATM导向的抗病毒反应
Hoi Tong Wong1, Adeline M Luperchio1, Sean Riley1
1Department of Microbiology and Immunology, Stony Brook University, Stony Brook, New York, United States of America.
PLoS pathogens
|September 5, 2023
概括
艾滋病毒-1辅助蛋白Vif抑制了DNA损伤修复 (DDR) 途径,阻止了ATM的激活. 这一发现揭示了HIV-1如何操纵宿主防御以促进病毒复制,同时抑制免疫反应.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 人类免疫缺陷病毒1型 (HIV-1) 利用宿主DNA损伤修复 (DDR) 途径进行复制.
- 病毒蛋白Vpr激活DDR激酶ATM和ATR,导致NF-κB信号传递和TRIM抗病毒因子激活.
研究的目的:
- 研究HIV-1辅助蛋白Vif在调节DDR通路中的作用.
- 为了确定Vif是否对抗ATM指导的信号和免疫激活.
主要方法:
- 使用HIV-1临床分离物和亚型的功能性测试.
- 药理上抑制DDR激酶的作用.
- 对NF-κB信号传递和TRIM蛋白酸化的分析.
主要成果:
- 艾滋病毒-1 Vif蛋白质阻断了ATM指导的DNA修复,NF-κB激活和TRIM蛋白质酸化.
- 维夫对ATM的对抗性发生在各种HIV-1M组亚型中.
- 维夫抑制了Vpr诱导的ATM激活,但不是ATR激活.
结论:
- 艾滋病毒-1使用不同的策略,涉及Vpr和Vif,来操纵DDR.
- 维夫对ATM导向信号的抑制抑制了免疫激活,促进了病毒复制.
- 了解这些机制为HIV-1感染提供了潜在的治疗点.
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