由自然感染引起的SARS-CoV-2融合酸导向抗体介导广泛的沙尔贝病毒中和
Alex L Roederer1, Yi Cao1, Chia Jung Li1
1Ragon Institute of MGH, MIT, and Harvard, Cambridge, MA, 02139, USA.
medRxiv : the preprint server for health sciences
|March 17, 2025
概括
重复的mRNA疫苗扩大了SARS-CoV-2的中和作用,但没有引起广泛的冠状病毒抗体. 对于融合 (FP) 特定抗体,需要自然感染或突破病例,这表明目前的疫苗不足以保护整个亚家族.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 疫苗学 疫苗学 疫苗学
背景情况:
- 对SARS-CoV-2的重复mRNA疫苗接种增加了对变种的中和范围.
- 针对Coronavirinae亚家族的抗体反应尚未得到充分理解.
- 融合 (FP) 是冠状病毒中保存的目标.
研究的目的:
- 分析血清样本中和宽度和抗冠状病毒功效.
- 识别广泛中和抗体的抗原标.
- 调查广泛中和的相关物质,包括FP抗体诱导.
主要方法:
- 来自老年人和医疗保健工作者的血清样本分析.
- 评估中和的宽度和强度.
- 鉴定抗体表位标的目标.
主要成果:
- 广泛中和反应通常是RBD特有的.
- 一部分捐赠者产生了FP特有的广泛中和反应.
- 在自然感染或疫苗突破后观察到FP特异性抗体,而不是天真个体.
结论:
- 现有的mRNA疫苗不足以引起FP导向的广泛中和的冠状病毒抗体.
- 像FP这样的Epitope目标对于广泛的冠状病毒中和至关重要.
- 自然感染或突破性感染可能是产生FP特异性抗体的必要条件.
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