在引起的脑炎病毒包裹Glycoprotein E的Domain II上暴露出新的中和性皮管
Andrey Matveev1, Yana Khlusevich1, Irina Kozlova2
1Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia.
Viruses
|June 28, 2023
概括
一种新的小鼠抗体,FVN-32,在暴露后给予时,在保护小鼠免受传播脑炎病毒 (TBEV) 感染方面表现出37.5%的有效性. 该抗体针对TBEV的保护区域.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 神经科学是一个神经科学.
背景情况:
- 传染性脑炎病毒 (TBEV) 是一种由传播的Orthoflavivirus,导致严重的中枢神经系统疾病.
- 目前对TBEV感染的预防方案有限,需要开发新的治疗策略.
研究的目的:
- 评估新开发的单克隆抗体 (mAb) FVN-32作为TBEV感染后暴露预防的疗效.
- 描述TBEV糖蛋白E上的mAb FVN-32的表位和结合部位.
主要方法:
- BALB/c小鼠接受了TBEV的挑战,随后接受了不同剂量的mAb FVN-32.
- 使用截断的葡萄糖蛋白E片段和组合性图书馆进行了表皮图谱绘制.
- 使用三维建模来确定抗体的精确结合部位.
主要成果:
- mAb FVN-32在每小鼠200微克和50微克的剂量下表现出37.5%的保护效果.
- 保护性表位被映射到TBEV糖蛋白E的I+II域.
- 抗体针对包膜蛋白质上的一个保存区域 (氨基酸残留247-254),该区域在空间上接近融合循环.
结论:
- mAb FVN-32显示出作为TBEV感染的暴露后治疗剂的潜力.
- 已确定的保存目标地点为开发广泛保护性骨髓炎病毒疗法提供了有前途的途径.
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