在日本脑炎病毒的包膜蛋白上发现和描述了两种新的线性B细胞表位
Mengyao Li1, Zhiyang Ran1, Quan Zeng1
1College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, Henan, China.
International journal of biological macromolecules
|January 12, 2026
概括
研究人员开发了针对日本脑炎病毒 (JEV) 包膜蛋白的新单克隆抗体. 这些抗体识别了保存的B细胞表位,对于JEV诊断和疫苗研究至关重要.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 生物化学 生物化学
背景情况:
- 日本脑炎病毒 (JEV) 对猪和公众健康构成重大风险.
- JEV包裹 (E) 蛋白对于病毒进入和抗体诱导至关重要,使其成为诊断和疫苗的关键目标.
研究的目的:
- 为了表达和净化重组JEV E蛋白.
- 为了产生针对JEV E蛋白的单克隆抗体.
- 为了识别和描述JEV E蛋白上的B细胞表位.
主要方法:
- 再组合的JEV E蛋白质的 Prokaryotic 表达和净化.
- 产生单克隆抗体 (mAbs) 2H9和5B1.1.
- 截断分析以确定线性B细胞表位.
- 蛋白质序列对齐和结构建模.
主要成果:
- 确定了两个新的线性B细胞表位:mAb 2H9的23LVLEGD28和mAb 5B1的80AHNEK84.
- 位23LVLEGD28在JEV基因型中高度保存;AHNEK84在所有基因型中保存,除了V.
- 结构建模确认的表位在E蛋白的表面暴露.
结论:
- 已识别的表位体是适合于血清检测JEV的标.
- 生成的单克隆抗体是JEV诊断和E蛋白研究的宝贵工具.
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