两种HSV-1突变体对外细胞形成的影响不能阻断自
Hope Waisner1, Sarah Lasnier1, Sreenath Muraleedharan Suma1
1Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center , Kansas City, Kansas, USA.
Journal of virology
|September 15, 2023
概括
简单疹病毒1 (HSV-1) 感染通过CD63通路促进细胞外囊泡 (EV) 的产生,从而触发抗病毒反应. 无法抑制自的突变物产生了不同的EV,这表明了治疗潜力.
科学领域:
- 病毒学 病毒学
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
背景情况:
- 病原体,包括简单疹病毒1 (HSV-1),利用宿主细胞细胞外囊 (EV) 途径进行复制和传播.
- HSV-1感染通常通过CD63四氨酸通路增强EV生物发生,导致EV激活受体细胞中的抗病毒反应.
- HSV-1 抑制了自,以逃避宿主防御,增加的 CD63 细胞外可以作为补偿机制.
研究的目的:
- 调查自抑制在HSV-1诱导的EV生物发生中的作用以及由自缺陷HSV-1突变体产生的EV的特征.
- 为了确定从缺乏自抑制能力的HSV-1突变衍生的EV是否保留免疫调节性质.
主要方法:
- 细胞感染野生型HSV-1 (HSV-1(F)) 和两种突变病毒 (ΔICP34.5和ΔICP0),无法抑制自.
- 分析EV生产,特别关注CD63通路和产生的EV的特征 (例如CD63表达).
- 评估来自突变感染的EVs在接受细胞中激活先天免疫基因表达的能力.
主要成果:
- 野生型HSV-1感染通过CD63通路显著增加了EV生物发生.
- HSV-1突变 ΔICP34.5 和 ΔICP0 并没有通过 CD63 途径刺激 EV 生物发生的增加.
- ΔICP34.5产生了CD63-阴性微和亡体,而 ΔICP0显示了整体EV生产的减少.
- 来自这些突变感染的EV能够激活受体细胞中的先天免疫基因表达.
结论:
- 自抑制对于HSV-1介导的CD63通路依赖的EV生物发生的刺激至关重要.
- 缺陷自抑制的HSV-1突变会产生具有改变特征的独特的EV群体.
- 与HSV-1突变体相关的EVs的免疫调节潜力需要进一步研究治疗应用.
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