人类细胞巨型病毒通过IE1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 Nguyen1,4,5
1Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA, USA.
Nature communications
|August 8, 2025
概括
基因组突变宏H2A1对于人类细胞巨乳病毒 (HCMV) 感染至关重要,使病毒诱导的细胞变化和传染性后代形成成为可能. HCMV劫持宿主细胞染色质,以激活神经元基因,以实现有效的病毒成熟.
科学领域:
- 病毒学 病毒学
- 细胞生物学 细胞生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 人类细胞巨核病毒 (HCMV) 显著改变宿主细胞形态,包括核形状和病毒组装区.
- 基因组蛋白变体 macroH2A1 在核完整性和简单疹病毒感染中发挥作用,这表明它可能在 HCMV 感染中发挥作用.
研究的目的:
- 为了研究质子变体宏H2A1在HCMV诱导的细胞重组和病毒复制中的作用.
- 了解HCMV如何在感染期间操纵宿主基因调节,特别是神经元基因.
主要方法:
- 进行RNA测序 (RNA-seq) 在具有或没有宏H2A1.1.的HCMV感染细胞上.
- 评估了HCMV即时早期蛋白1 (IE1) 功能,以确定其在宿主基因诱导中的作用.
主要成果:
- macroH2A1对于HCMV诱导的细胞重组和传染性病毒颗粒的产生至关重要.
- 虽然所有病毒基因都没有表达宏H2A1,但许多HCMV诱导的宿主基因,包括具有神经元特征的宿主基因,没有表达.
- 对于诱导这些宏H2A1依赖的神经元基因,HCMV IE1蛋白是必要和足够的.
结论:
- 宏H2A1对于HCMV来说至关重要,它可以重塑宿主细胞并产生传染性后代.
- HCMV利用macroH2A1通过染色体修饰来劫持休眠的神经元分泌途径,以实现有效的病毒成熟.
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