人类细胞巨乳病毒编码的G蛋白结合受体 (GPCR) UL78调节病毒的重新激活
Samuel A Osanyinlusi1, Vargab Baruah1, Ian J Groves1,2,3
1Infection Biology, Sheikha Fatima bint Mubarak Global Center for Pathogen and Human Health Research, Cleveland Clinic Research, Cleveland Clinic, Cleveland, Ohio, USA.
Journal of virology
|August 27, 2025
概括
人类细胞巨核病毒 (CMV) 需要病毒蛋白UL78来从潜伏状态中重新激活. UL78重塑细胞信号,促进从潜伏性感染转变为溶解性感染,提供新的治疗点.
科学领域:
- 病毒学
- 免疫学
- 细胞生物学
背景情况:
- 人类细胞巨核病毒 (CMV) 在造血细胞中建立终身潜伏期,在免疫能力强的个体中通常无症状.
- 在免疫失调期间可能发生病毒的重新激活,导致并发症.
- 在潜伏期内表达CMV蛋白US28和UL78,US28对维持其至关重要.
研究的目的:
- 调查CMV UL78在潜伏期病毒再激活中的作用.
- 阐明US28信号从潜伏转变为潜伏的机制.
- 了解UL78和US28在重新激活过程中的相互作用.
主要方法:
- 骨髓细胞和纤维细胞感染野生型和UL78删除突变CMV.
- 病毒延迟和重新激活的分析.
- 细胞外信号调节激酶 (ERK) 酸化的评估.
- 对US28和UL78的同定位研究.
主要成果:
- 需要UL78才能有效地从骨髓细胞中重新激活CMV.
- UL78删除突变保持潜伏,但无法重新激活.
- UL78和US28在分化后在骨髓细胞中相互作用和局部化.
- 在骨髓细胞中的重新激活可提高ERK酸化的调节,这取决于UL78.
结论:
- 通过影响细胞信号传递,UL78在CMV重新激活中起着关键作用.
- 在重新激活过程中,UL78:US28相互作用对改变US28介导信号很重要.
- 在重新激活过程中UL78在骨髓细胞中的功能是新发现的,具有治疗潜力.
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