需要VLDLR输入受体来产生多个脑性α病毒的病原体
Sathvik Palakurty1, Saravanan Raju2, Alan Sariol3
1Department of Pathology & Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA; Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA.
Cell reports
|October 6, 2024
概括
非常低密度脂蛋白受体 (VLDLR) 促进了西马脑炎病毒 (WEEV) 和相关的α病毒的感染. VLDLR缺乏或阻塞可以保护阿尔法病毒病原体,这表明VLDLR是治疗点.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 非常低密度脂蛋白受体 (VLDLR) 是已知的某些α病毒的入口受体,如塞米利基森林病毒 (SFV) 和细胞培养中的东方马脑炎病毒 (EEEV).
- VLDLR在阿尔法病毒发病过程中的更广泛作用及其与其他阿尔法病毒的相互作用,特别是在不同的抗原复合体内,仍然在很大程度上未被探索.
研究的目的:
- 使用全基因组CRISPR-Cas9屏幕识别新型α病毒受体.
- 调查VLDLR在西部马脑炎病毒 (WEEV) 和其他相关的α病毒的发病过程中的作用.
- 评估针对阿尔法病毒感染的VLDLR的治疗潜力.
主要方法:
- 针对表面蛋白质的CRISPR-Cas9屏幕被用于识别alphavirus的宿主细胞进入因子.
- 在体外感染测定使用VLDLR缺乏细胞和野生类型细胞进行.
- 在体内研究中使用了VLDLR缺乏的小鼠和可溶性VLDLR-Fc诱分子来评估对阿尔法病毒挑战的保护.
主要成果:
- 确定VLDLR是WEE病毒和其他WEE抗原复合体内的WEE病毒的关键入口受体.
- 在VLDLR缺乏的小鼠中,WEEV,EEEV和SFV的致病性显著降低.
- 用一种可溶性VLDLR-Fc诱分子进行治疗,可以保护小鼠免受阿尔法病毒诱导的疾病.
结论:
- VLDLR在多种α病毒的发病过程中发挥着重要作用,包括来自不同抗原复合物的α病毒.
- 针对VLDLR是一个有前途的战略,用于开发针对阿尔法病毒感染的广泛应对措施.
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