针对抗SARS-CoV-2 IgG 修饰和抗体功能在mRNA,腺核载体和蛋白质子单元疫苗中的特定长期变化
Sebastian Reinig1, Chin Kuo1, Chia-Chun Wu2
1Research center for Emerging viral infections, Chang Gung University, Taoyuan, Taiwan.
medRxiv : the preprint server for health sciences
|April 1, 2024
概括
包括蛋白质子单元和mRNA类型在内的COVID-19疫苗会诱导抗体功能的明显长期变化. 了解这些疫苗特异性免疫反应对于选择最佳的疫苗接种策略至关重要.
科学领域:
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
- 生物化学 生物化学
背景情况:
- 抗体,特别是IgG,对于疫苗诱导的免疫力至关重要.
- 蛋白子单元和mRNA COVID-19疫苗对抗体功能的长期影响尚不清楚.
研究的目的:
- 调查COVID-19疫苗接种后IgG亚类水平,Fc-N糖化和Fc介导功能的长期变化.
- 为了在不同的疫苗平台上比较这些变化:蛋白质子单元 (Medigen),mRNA (BNT) 和腺核 (AstraZeneca).
主要方法:
- 从接受1-3剂疫苗的个体收集了272个血清/血样本.
- 通过ELISA测量IgG子类水平.
- 使用LC-MS/MS.进行分析的Fc-N糖化.
- 评估了抗体依赖性细胞形成 (ADCP) 和补体沉积 (ADCD).
主要成果:
- IgG1和IgG3是占主导地位的抗高峰IgG子类.
- mRNA和Medigen疫苗增加了IgG1,IgG2和IgG4的水平.
- Fc-glycosylation在很大程度上保持稳定,BNT疫苗接种女性的显著变化.
- 在所有组中,ADCP下降,而在第三剂后的Medigen接受者中,ADCD增加.
结论:
- COVID-19疫苗平台诱导Fc结构和抗体效应因子功能的独特长期变化.
- 这些发现为选择疫苗平台或组合以实现所需的免疫反应提供了关键的见解.
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