广泛的SARS-CoV-2被单克隆和双特异性抗体中和,这些抗体来自于被玛病毒感染的个体
Denise Guerra1,2, Tim Beaumont1,2, Laura Radić1,2
1Amsterdam UMC, location University of Amsterdam, Department of Medical Microbiology and Infection Prevention, Laboratory of Experimental Virology, Meibergdreef 9, Amsterdam 1105 AZ, the Netherlands.
iScience
|October 16, 2023
概括
科学家们发现了来自SARS-CoV-2玛变种感染的强有力的单克隆抗体 (mAbs). 这些抗体中和了各种各样的变体,为广泛保护对进化的病毒提供了希望.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 结构生物学 结构生物学
背景情况:
- 严重急性呼吸系统综合征冠状病毒2 (SARS-CoV-2) 变种由于免疫逃避而构成持续的威胁.
- 开发广泛中和的单克隆抗体 (mAbs) 对于对抗各种SARS-CoV-2菌株至关重要.
研究的目的:
- 识别和描述能够中和广泛的SARS-CoV-2变种的mAbs.
- 探索从玛变体感染中获得的抗体的潜力,以广泛的治疗应用.
主要方法:
- 使用稳定尖峰葡萄糖蛋白从一个患有原发性玛变异感染的个体中获取抗原特异性B细胞的丰富.
- 选择和表征五种强大的中和mAbs,包括结构分析,以阐明交叉中和机制.
主要成果:
- 五个选定的mAbs显示出针对多个SARS-CoV-2变异的显著中和活性.
- COVA309-35对自身,BA.1和BA.2的Omicron变种表现出高强度.
- COVA309-22对BA.4/5,BQ.1.1和XBB.1的奥米克朗亚型表现出活性.
- 结合mAbs作为尾酒或双特异抗体,增强了中和范围和功效.
结论:
- 感染SARS-CoV-2玛变种的个体可以产生广泛中和抗体.
- 这些发现支持开发针对保存表位的泛冠状病毒治疗策略.
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