在接种疫苗的个体中,补充介导的SARS-CoV-2抗体中和功能的增强
Jack Mellors1, Raman Dhaliwal2, Stephanie Longet3
1Centre for Human Genetics and the Pandemic Sciences Institute, Nuffield Department of Medicine, University of Oxford, Oxford, UK. jmellors@ic.ac.uk.
Nature communications
|March 19, 2025
概括
补体系统显著提高了中和抗体对抗SARS-CoV-2变体的有效性,如Omicron. 这一发现对于通过改善保护相关性来开发更有效的疫苗和疗法至关重要.
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:
- 新出现的SARS-CoV-2变种和免疫力减弱需要改善疫苗和治疗开发的保护相关性.
- 中和抗体标位是关键的,但通常在没有补充系统的情况下进行评估,这可以增强体内中和.
研究的目的:
- 研究补充系统对SARS-CoV-2中和的影响.
- 探索补充剂如何增强中和,并确定其在保护病毒变异中的作用.
主要方法:
- 在中和试验中补充系统的补充.
- 在ACE2竞争试验中,研究了其作用机制.
- 使用compstatin.in进行C3抑制的活病毒中和试验.
主要成果:
- 补充补充剂显著提高了中和度,与BA.1.1.529菌株相比增加了约83倍.
- 增强大小因个体,病毒菌株 (野生型/VIC01,Omicron/BA.1) 和细胞系 (Vero E6,Calu-3) 而有所不同.
- 补充介导的中和部分依赖于减少ACE2-spike相互作用,C3对于最大效率至关重要.
结论:
- 补体系统在增强SARS-CoV-2中和性方面发挥着关键作用,影响保护相关性.
- 这些发现对评估疫苗有效性和开发针对当前和未来SARS-CoV-2变种的治疗方法有影响.
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