在急性至慢性HIV-1感染期间对抗SERINC5的Nef的功能变异性
Weiting Li1,2, Guoqing Li2, Yuyang Liu3
1State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases/Key Laboratory for Zoonosis Research of the Ministry of Education.
长期的HIV-1 Nef进化影响其对抗SERINC5.5的能力. 亚型B病毒显示功能下降,而亚型C病毒保持,影响病毒载量和发病.
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:
- 艾滋病毒-1 Nef蛋白对抗宿主限制因子 SERINC5,增强病毒感染力.
- 尼夫对宿主内SERINC5对抗性的长期进化影响尚不清楚.
研究的目的:
- 调查HIV-1 Nef在SERINC5.5对抗中的纵向活性.
- 分析Nef降低SERINC5调节的能力如何在HIV-1感染的不同阶段发生变化.
主要方法:
- 对从19名艾滋病毒-1亚型B或C的个体中传染/创始,设定点和慢性Nef分离物的分析.
- 研究了Nef分离物对抗SERINC5的能力,并确定了关键的多态性.
主要成果:
- 随着时间的推移,nef分离物显示出不同的serinc5对抗能力.
- 不同于C亚型,B亚型Nef随着长期演变而失去SERINC5下调功能,影响病毒载量.
- 四个Nef多态 (E63G,A83G,R105K,D108E) 与改变的SERINC5对抗性和病毒复制有关.
结论:
- 艾滋病毒-1 Nef的功能变异有助于病变发生的差异.
- 在体内了解Nef-SERINC5进化相互作用对于HIV-1研究至关重要.
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