简单疹病毒1 ICP22和FACT之间的相互作用对病毒基因表达和病变发生的影响
Shaocong Liu1,2, Yuhei Maruzuru1,2,3, Kosuke Takeshima1,2
1Division of Molecular Virology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.
Journal of virology
|July 17, 2024
概括
简单疹病毒1 (HSV-1) 蛋白质ICP22与促进色素转录 (FACT) 相互作用,促进病毒基因表达和毒性. 用CBL0137抑制FACT可以改善感染小鼠的生存率,这表明FACT是治疗点.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 基因转录 基因转录
背景情况:
- 促进染色体转录 (FACT) 通过管理核细胞体动力学,对基因转录至关重要.
- 简单疹病毒1 (HSV-1) 蛋白质ICP22与FACT相互作用,但这种相互作用在HSV-1感染中的生物学意义尚不清楚.
研究的目的:
- 研究在HSV-1感染中ICP22-FACT相互作用的生物学重要性.
- 为了确定ICP22负责FACT交互的最小域.
- 评估FACT作为HSV-1的潜在治疗点.
主要方法:
- 使用FACT.映射ICP22的最小交互域.
- 产生一种复合的HSV-1病毒,在已识别的ICP22域中发生突变.
- 在小鼠中评估病毒mRNA积累,Pol II占用和病毒性.
- 在HSV-1感染的小鼠模型中评估FACT抑制剂 (CBL0137) 的疗效.
主要成果:
- 在ICP22中,五个基本氨基酸的集群被确定为FACT相互作用的最小域.
- 具有突变ICP22的重组病毒显示病毒mRNA积累和Pol II占用率下降.
- 突变病毒在小鼠中表现出HSV-1病毒性受损.
- 用CBL0137治疗显著改善了野生型HSV-1感染的小鼠的存活率.
结论:
- ICP22-FACT相互作用对于高效的HSV-1基因表达和致病性至关重要.
- 用CBL0137等抑制剂向FACT显示出治疗HSV-1感染的前景.
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