LRP8是传播脑炎病毒的入口受体
Pengfei Li1, Sean Hui2, Zhenlu Chong1
1Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110.
概括
低密度脂蛋白受体8 (LRP8) 作为传播脑炎病毒 (TBEV) 的关键入口受体,促进神经元细胞的感染. 这一发现为开发TBEV对策提供了新的途径.
科学领域:
- 病毒学 病毒学
- 神经科学是一个神经科学.
- 分子生物学分子生物学
背景情况:
- 脊髓炎病毒,包括传播脑炎病毒 (TBEV),导致全球显著的发病率和死亡率.
- TBEV是人类严重神经疾病的原因,但其细胞进入受体在很大程度上是未知的.
- 低密度脂蛋白受体 (LDLR) 家族被认为是相关病毒的潜在受体.
研究的目的:
- 为了确定TBEV菌株的特定进入受体.
- 研究LDLR家族成员在TBEV细胞热带和感染中的作用.
主要方法:
- 对表达LDLR家族成员的转基因细胞的查.
- 在神经细胞中对LRP8进行基因剥离和补充研究.
- 使用TBEV包膜蛋白和LRP8.8的结合试验.
- 使用可溶性LRP8-Fc诱受体和淘汰小鼠的功能实验.
主要成果:
- LRP8 (ApoER2) 被确定为TBEV菌株的候选受体,涉及五种亚型.
- LRP8的遗传失活化会影响TBEV感染,而它的表达会增强TBEV感染.
- LRP8直接与TBEV包膜蛋白结合,通过其LDLR类型A域1和2促进病毒的附着和内部化.
- 溶性LRP8-Fc中和了TBEV,而Lrp8淘汰的小鼠显示病毒感染减少.
结论:
- LRP8是TBEV进入和感染神经元细胞的关键受体.
- 了解LRP8的作用对开发新型TBEV疗法产生影响,包括基于可溶性受体和基于抗体的策略.
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