人类细胞巨型病毒诱导神经元基因表达用于病毒成熟
Laurel E Kelnhofer-Millevolte1,2,3, Julian R Smith1, Daniel H Nguyen1
1Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA, USA.
bioRxiv : the preprint server for biology
|June 25, 2024
概括
人类细胞巨型病毒 (HCMV) 需要基因组变体 macroH2A1 来重塑宿主细胞并产生传染性后代. 这种蛋白质对于调节宿主基因表达至关重要,特别是对于有效的病毒成熟至关重要的神经元通路.
科学领域:
- 病毒学 病毒学
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 人类细胞巨乳病毒 (HCMV) 感染会导致宿主细胞显著的形态变化,包括核和细胞质变化.
- 连接宿主基因调节与HCMV诱导的细胞重塑和病毒生成的精确机制仍然不完全理解.
研究的目的:
- 为了研究基因组变体 macroH2A1 在 HCMV 诱导的宿主细胞结构变化中的作用.
- 确定宏H2A1在HCMV感染期间对宿主基因表达的影响.
- 阐明HCMV调节的宿主基因在病毒复制中的功能重要性.
主要方法:
- RNA测序 (RNA-seq) 用于分析宿主基因表达特征.
- 敲击实验以评估宏H2A1和特定宿主基因的必要性.
- 显微镜观察细胞和病毒组合区 (vIAC) 形态.
主要成果:
- 宏H2A1对于宿主核,细胞骨和内分泌网膜的HCMV诱导的重组至关重要.
- 型冠状病毒感染上调许多依赖于宏H2A1的宿主基因,其中许多与神经元功能相关,如突触形成和囊泡贩运.
- 缺少宏H2A1导致高病毒基因表达,但损害宿主基因诱导和vIAC形成和病毒斑块大小的缺陷.
结论:
- 基因组变体 macroH2A1 是 HCMV 介导的细胞重塑和有效的病毒成熟的关键宿主因素.
- HCMV劫持了一个休眠的神经元分泌途径,由宏H2A1调节,以操纵宿主基因表达以进行病毒复制.
- 准宏H2A1依赖宿主通路为控制HCMV感染提供了一个潜在的策略.
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