简单疹病毒1 超源病毒中的糖蛋白B 介导增强的细胞-细胞融合
Katrina A Gianopulos1,2,3, Albina O Makio1,3, Suzanne M Pritchard1
1Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA 99164, USA.
Viruses
|February 24, 2024
概括
与野生型菌株相比,简单疹病毒1 (HSV-1) 菌株ANG表现出增强的融合和进入能力. ANG糖蛋白的特定突变,特别是gB,驱动这种超原性表型,为HSV进入机制提供了洞察力.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 简单疹病毒1 (HSV-1) 是一种全球性病原体,对人类的疾病和死亡率负责.
- HSV-1复杂的融合和进入机制尚未完全阐明.
- 与野生型菌株相比,HSV-1 ANG菌株表现出明显的融合和进入特征.
研究的目的:
- 调查HSV-1菌株ANG中观察到的独特的进入和融合活动的分子基础.
- 解读HSV融合和进入过程中涉及的分子相互作用的复杂级联.
- 确定负责HSV-1 ANG的高原性表型的特定病毒成分.
主要方法:
- 在不同温度下对HSV-1 ANG和野生型HSV-1 KOS病毒融合和进入效率进行比较分析.
- 基因测序以确定HSV-1 ANG和野生型菌株之间的遗传差异,重点关注糖蛋白.
- 无病毒报告测定用于评估单个HSV-1 ANG糖蛋白 (gB,gD,gH/gL) 和它们的组合的融合性和入口能力.
主要成果:
- 与HSV-1 KOS相比,HSV-1 ANG在4°C时与Vero细胞的融合增加,并在15°C时增强进入,这表明HSV-1具有超源的表型.
- 基因分析显示,与野生型菌株相比,HSV-1 ANG糖蛋白gB,Cg,gd,gh和gl发生突变.
- HSV-1 ANG gB,gD 和 gH/gL 足以调解细胞与细胞的融合. 值得注意的是,当与野生类型的KOS gD和gH/gL共同表达时,单独的ANG gB增强了聚变,突出了其高聚性潜力.
结论:
- HSV-1菌株ANG的超原性表型是由于其融合和进入糖蛋白,特别是gB.中的特定突变而产生的.
- 这些发现为剖析控制HSV融合和细胞进入的分子机制提供了有价值的平台.
- 了解这些突变可以导致控制HSV感染的新策略.
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