病毒编码的互白素-6促进KSHV在单细胞中的复制,并诱导功能失调的巨细胞
Michiko Shimoda1,2, Tomoki Inagaki1, Ryan R Davis3
1Department of Dermatology, School of Medicine, University of California, Davis, Sacramento, California, United States of America.
PLoS pathogens
|October 26, 2023
概括
卡波西的肉瘤相关性疹病毒 (KSHV) 使用病毒性互白素-6 (vIL-6) 来扩大受感染的单细胞到功能失调的巨细胞,帮助病毒的持久性. 这种机制有助于KSHV逃避免疫监测,并建立终身感染.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 卡波西肉瘤相关的疹病毒 (KSHV) 导致重大疾病,包括卡波西肉瘤.
- 了解KSHV的复制和传播对于开发有效的治疗方法至关重要.
研究的目的:
- 为了研究病毒性互白素-6 (vIL-6) 在单细胞KSHV感染中的作用.
- 为了阐明KSHV如何扩大其感染细胞群.
主要方法:
- 单细胞RNA测序 (scRNA-seq) 用于分析KSHV感染的单细胞.
- 用于比较感染研究,生成具有和没有vIL-6 (vIL-6(-) 和vIL-6(+)) 的重组KSHV.
- 对宿主抗病毒反应,STAT1/3激活和单细胞分化为巨细胞的分析.
主要成果:
- KSHV优先感染CD14+单细胞,并使用vIL-6维持Lytic复制.
- vIL-6对于KSHV感染单细胞的增殖和分化成巨细胞至关重要.
- 来自vIL-6(+) KSHV感染的巨体表现出免疫抑制和T细胞刺激受损.
- vIL-6支持持续的KSHV转录,包括PANRNA水平.
结论:
- vIL-6在维持KSHV转录和促进受感染单细胞扩张方面发挥着至关重要的作用.
- KSHV使用vIL-6将单细胞分化为功能障碍的巨细胞,促进免疫逃避和终身感染.
- 这项研究揭示了KSHV持久性和免疫逃避的一个新机制.
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