病毒进入的形状是 HCMV 延迟时间的建立
Yaarit Kitsberg1, Aharon Nachshon1, Tamar Arazi1
1Department of Molecular Genetics, Weizmann Institute of Science, Rehovot, Israel.
Nature communications
|December 28, 2025
概括
人类细胞巨型病毒 (HCMV) 感染在单细胞中的延迟与低效的病毒进入有关. 增强进入允许生产性感染,揭示进入是HCMV延迟的一个关键因素.
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:
- 人类细胞巨乳病毒 (HCMV) 通过潜伏感染建立了终身持久性.
- 单细胞支持潜伏的HCMV,而巨细胞支持生产性感染,主要归因于染色体调节.
- 单细胞和巨细胞之间病毒转录的差异在感染早期被观察到.
研究的目的:
- 调查导致单细胞与巨细胞中不同HCMV感染结果的因素.
- 探索病毒进入效率在HCMV潜伏和生产性感染中的作用.
- 为了确定在单细胞分化过程中影响HCMV进入的特定细胞因素.
主要方法:
- 对新合成的RNA进行代谢标记,以评估病毒转录.
- 对病毒进入和核基因组输送在单细胞和巨细胞中的比较分析.
- 在单细胞中HCMV入口受体的宫外表达.
- 使用整蛋白β3作为标记物,识别参与HCMV进入的细胞表面蛋白质.
主要成果:
- 与巨细胞相比,单细胞呈现明显较低的病毒转录和低效的病毒输入.
- 在单细胞中HCMV入口受体的异位表达拯救了病毒的入口,并使生产性感染成为可能.
- 集成蛋白β3被确定为一种差异化诱导的蛋白质,对于高效的HCMV进入巨细胞至关重要.
- 病毒基因组输入减少的细胞更容易建立潜在的感染和重新激活.
结论:
- 病毒进入效率是确定单细胞中HCMV延迟的一个关键,以前未被识别的因素.
- 单细胞分化成巨细胞增强了HCMV的进入,部分是通过整体蛋白β3上调.
- 了解进入机制为HCMV持久性和重新激活动态提供了新的见解.
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