定义由SARS-CoV-2抗体准的抗变种表位:全球联盟研究
Kathryn M Hastie1, Haoyang Li1, Daniel Bedinger2
1Center for Infectious Disease and Vaccine Research, La Jolla Institute for Immunology, 9420 Athena Circle, La Jolla, CA 92037, USA.
Science (New York, N.Y.)
|September 23, 2021
概括
抗体治疗对于抗击COVID-19至关重要. 研究人员绘制了SARS-CoV-2尖端蛋白的地图,发现了对不断发展的变种有效的关键抗体.
科学领域:
- 病毒学
- 免疫学
- 结构生物学
背景情况:
- 抗体疗法和疫苗对于管理COVID-19的严重程度和死亡非常重要.
- SARS-CoV-2 (严重急性呼吸综合征冠状病毒2) 的突变可以降低传播和动物感染期间抗体防御的有效性.
研究的目的:
- 绘制SARS-CoV-2尖端蛋白的表观地图.
- 针对受体结合域 (RBD) 的抗体群体的结构性特征.
- 评估病毒突变对抗体有效性的影响.
主要方法:
- 形成一个国际集团的表皮图.
- 针对RBD的抗体群体的结构图.
- 基于伪的中和试验,以评估对突变尖端蛋白的抗体功能.
主要成果:
- 定义了七个不同的RBD定向抗体群体,具有独特的结合位点和竞争模式.
- 鉴定了影响抗体中和的单个和集群突变.
- 证明了针对RBD的关键类抗体对新出现的SARS-CoV-2变种保持中和活性.
结论:
- 建立了选择有效抗体治疗尾酒的框架.
- 提供了关于病毒变异如何影响抗体疗法的见解.
- 强调持续监测病毒突变对治疗发展的重要性.
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