埃弗受体氨酸激酶是鼠马 herpesvirus 68 的功能性入口受体
Anna K Großkopf1, Victor Tobiasson2, Laurie T Krug1
1HIV and AIDS Malignancy Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland, United States of America.
PLoS pathogens
|October 21, 2025
概括
鼠马疹病毒68 (MHV68) 使用Eph受体,如EphA4和EphB3,进入细胞. 这种涉及病毒gH/gL葡萄糖蛋白复合体的保存机制为针对玛疹病毒感染的疫苗和治疗提供了新的标.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 病毒葡萄糖蛋白和细胞受体决定病毒热带性,是疫苗的关键目标.
- 埃夫受体氨酸激酶是已知的受体人类的玛疹病毒 (KSHV,EBV),通过病毒的gH/gL复合物中介进入.
- 鼠玛疹病毒68 (MHV68) 作为一种体内模型,用于研究早期玛疹病毒感染事件.
研究的目的:
- 研究MHV68 gH/gL复合体与Eph受体之间的相互作用.
- 在动物模型中使用Eph受体评估MHV68的进入机制.
- 为了确定治疗干预的潜在目标对抗玛疹病毒感染.
主要方法:
- 描述了MHV68 gH/gL与EphA4和EphB3的相互作用.
- 利用可溶性诱受体来评估感染减少.
- 采用Eph受体的宫外表达来测试非允许细胞中的传染性.
- 根据蛋白质结构预测进行了向突变发生.
- 分析了针对gH D-I的中和抗体.
主要成果:
- 显示MHV68 gH/gL和EphA4/EphB3之间的直接相互作用,在人类和小鼠受体中保存.
- 显示可溶性诱Eph受体降低MHV68纤维细胞感染.
- 已确认的EphA4和EphB3使MHV68能够进入非允许的人类B细胞.
- 确定了Eph结合域 (gH D-I) 对于MHV68-Eph相互作用至关重要,与KSHV结构动机一致.
- 发现gH D-I是gH/gL导向中和抗体的主要目标.
结论:
- 埃弗受体是MHV68.8的新型相互作用和入口受体.
- 保存的进入机制为MHV68感染的体内研究提供了基础.
- 确定了gH D-I作为中和抗体的关键目标,为阻止传播的策略铺平了道路.
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