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来自人类幸存者的抗体定义了针对埃博拉病毒的广泛保护的脆弱区域

Anna Z Wec¹, Andrew S Herbert², Charles D Murin³

¹Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461, USA.

|May 20, 2017

概括

研究人员从自然埃博拉病毒 (EBOV) 感染中发现了强大的泛埃博拉病毒单克隆抗体 (mAbs). 这些抗体通过向保存的病毒糖蛋白 (GP) 表位来中和多种埃博拉病毒,具有广泛的治疗潜力.

科学领域:

病毒学
免疫学
药物发现

背景情况:

实验性单克隆抗体 (mAb) 疗法对埃博拉病毒 (EBOV) 感染具有前景.
病毒糖蛋白 (GP) 的特定物种识别限制了目前对不同埃博拉病毒的 mAb 疗效.
对抗多种埃博拉病毒需要广泛有效的免疫疗法.

研究的目的:

识别具有强大的泛埃博拉病毒中和活性的单克隆抗体 (mAbs).
研究广泛中和mAbs的表位和作用机制.
为开发有效的免疫疗法和疫苗提供信息.

主要方法:

削弱人类对自然EBOV感染的免疫反应.
对各种埃博拉病毒的mAb结合和中和活性的表征.
对GP结构和功能的皮图和分析.

主要成果:

鉴定了具有强大的中和活性和对三种毒性埃博拉病毒的保护效果的mAbs.
发现这些mAbs在GP融合循环中识别了互原体表位.
通过向内分体中的蛋白质原始化GP中间体 (GP_CL) 证明了中和.

结论:

广泛中和的mAbs可以通过少数体质突变得到,这表明有效的发育.
优化的GP免疫原可以增强这种抗体的产生.
这些发现支持开发广泛有效的免疫疗法和针对细菌病毒的疫苗.

关键词:

第五百八十七章美国埃博拉病毒埃博拉病毒子人类广泛中和抗体感染情况小鼠中和进行保护

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