通过保护性人类抗体中和埃博拉病毒的结构和分子基础
John Misasi1, Morgan S A Gilman2, Masaru Kanekiyo3
1Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA. Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA. Division of Infectious Diseases, Boston Children's Hospital, Boston, MA 02215, USA.
Science (New York, N.Y.)
|February 27, 2016
概括
通过向病毒糖蛋白,两种单克隆抗体mAb100和mAb114提供了对埃博拉病毒疾病的保护. 它们的联合作用防止病毒进入和与受体结合,为新疗法铺平了道路.
科学领域:
- 病毒学
- 免疫学
- 药物发现
背景情况:
- 埃博拉病毒导致严重的出血热, 没有批准的治疗方法.
- 在对抗病毒感染方面,单克隆抗体 (mAbs) 是有前途的.
研究的目的:
- 阐明两个保护性人类单克隆抗体mAb100和mAb114的中和机制.
- 了解这些抗体是如何防止埃博拉病毒进入和疾病进展的.
主要方法:
- 与mAbs复合的埃博拉病毒糖蛋白 (GP) 的结构分析.
- 在体外测试以评估抗体结合和GP裂变和受体相互作用的抑制.
主要成果:
- mAb100结合了GP的三元基,阻断了病毒进入所必需的甲素裂变.
- mAb114结合了GP的糖盖和内部杯,抑制了GP的受体结合.
- 组合的mAbs在非人类灵长类动物中提供了对埃博拉病毒疾病的完整保护.
结论:
- mAb100和mAb114的独特机制定义了它们对埃博拉病毒的保护作用.
- 了解这些抗体与GP的相互作用可以指导开发有效的埃博拉病毒疗法和疫苗.
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