病毒对II型干扰素的调节增加了T细胞粘附和病毒传播
Carina Jacobsen1, Nina Plückebaum1, George Ssebyatika1,2
1Institute of Virology, Hannover Medical School, Hannover, 30625, Germany.
Nature communications
|June 22, 2024
概括
疹病毒 (VZV) 糖蛋白C结合并改变干扰素- (IFN-γ) 的活性. 这通过促进T细胞粘附和增加特定的免疫刺激基因来增强VZV的传播.
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:
- 初级疹病毒 (VZV) 感染通过系统传播,感染的淋巴细胞导致病毒性病.
- 干扰素 (IFN) 是细胞因子,部分限制VZV感染,但病毒在二次病毒病之前从皮肤角质细胞传播到淋巴细胞,逃避这种反应.
研究的目的:
- 阐明VZV在传播过程中逃避宿主的细胞因子反应的机制.
- 研究VZV糖蛋白C (gC) 在调节干扰素 (IFN-γ) 活性和促进病毒传播中的作用.
主要方法:
- 对VZV糖蛋白C与IFN-γ的相互作用进行分析.
- 评估IFN-γ活动调节及其对IFN刺激基因 (ISG) 表达的影响.
- 评估细胞间粘附分子1 (ICAM1) 的表达及其在T细胞粘附和VZV传播到外围血液单核细胞中的作用.
主要成果:
- VZV糖蛋白C (gC) 与IFN-γ结合,改变其活性.
- 这种相互作用导致IFN刺激基因 (ISG) 的子集的表达增加,包括ICAM1,化学基因和免疫调节基因.
- 在角质细胞上升的ICAM1增强了T细胞的附着性,促进VZV向淋巴细胞传播.
结论:
- VZV采用一种涉及糖蛋白C调节IFN-γ活动的策略.
- 这种调节可提高特定ISG的调节,通过ICAM1增强淋巴细胞的粘附,并促进VZV向外围血液单核细胞的传播.
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