SARS-CoV-2 疫苗引发了差异性的 Fc 效应器功能
Nelia P Manamela1,2, Boitumelo M Motsoeneng1,2, Holly Spencer1,2
1South African Medical Research Council Antibody Immunity Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
iScience
|July 31, 2025
概括
与腺病毒疫苗相比,BNT162b2疫苗表现出优异的抗体反应,包括中和和Fc效应器功能,如抗体依赖细胞毒性 (ADCC),与腺病毒疫苗相比. 这突显了优化疫苗设计以加强对SARS-CoV-2的保护的潜力.
科学领域:
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
- 病毒学 病毒学
背景情况:
- Fc效应器功能对于疫苗介导的预防严重的SARS-CoV-2感染至关重要,它补充了中和.
- 这些功能在各种疫苗平台上的差异性协调和交叉反应性仍然不完全理解.
研究的目的:
- 分析和比较由BNT162b2,Ad26.CoV2.S和ChAdOx1 nCoV-19疫苗引起的结合,中和和Fc效应函数 (ADCC,ADCP,ADCD).
- 研究不同疫苗模式中这些免疫反应的协调和交叉反应.
主要方法:
- 对三种SARS-CoV-2疫苗的临床试验数据的二次分析:BNT162b2,Ad26.CoV2.S和ChAdOx1 nCoV-19.
- 测量抗体依赖细胞细胞毒性 (ADCC),细胞化 (ADCP) 和补体沉积 (ADCD),并进行结合和中和试验.
主要成果:
- BNT162b2引起了最高水平的结合,中和,ADCC和ADCP. 在疫苗类型之间观察到Fc效应器功能的显著差异.
- Ad26.CoV2.S在提升前显示较低的ADCD活性,在提升后显著增加. 与腺病毒疫苗相比,BNT162b2显示出更高的交叉反应中和,ADCC和ADCP.
- ChAdOx1 nCoV-19对ADCD的交叉反应性较高. 功能协调因疫苗方式而异,BNT162b2显示中和/结合和ADCC之间的相关性,而Ad26.CoV2.S与ADCD相关.
结论:
- 疫苗模式显著影响Fc效应器功能和中和的概况和协调.
- BNT162b2表现出强大的多功能配置文件,表明其具有广泛保护的潜力.
- 这些发现支持在疫苗设计中优化Fc效应器功能,以改善针对SARS-CoV-2的多功能免疫反应.
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