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.
Journal of medical virology
|July 18, 2024
概括
不同的COVID-19疫苗,包括蛋白质亚单元和mRNA类型,诱导抗体结构和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疫苗策略至关重要.
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:
- 对COVID-19疫苗的适应性免疫反应依赖于IgG抗体的Fc介导功能.
- 蛋白子单元和mRNA疫苗组合对抗体Fc功能的长期影响仍然基本未知.
研究的目的:
- 为了研究不同COVID-19疫苗平台后的IgG亚类水平,Fc-N糖化和Fc介导功能 (ADCP,ADCD) 的长期变化.
- 为了比较由蛋白质子单元 (Medigen),mRNA (BNT,Moderna) 和腺核病毒 (AstraZeneca) 疫苗引起的免疫反应.
主要方法:
- 对272个接种了1-3剂疫苗的个体的血清/血样本进行了分析.
- 通过ELISA对IgG子类进行量化.
- 使用液体染色学-并联质谱法进行Fc-N糖化分析.
- 通过流细胞计量测量抗体依赖性细胞化 (ADCP) 和补体沉积 (ADCD).
主要成果:
- IgG1 和 IgG3 是主要的子类. mRNA和Medigen疫苗增加了IgG1,IgG2和IgG4的水平.
- Fc-glycosylation保持稳定,除了女性BNT疫苗接种者的改变两切和银河系酶定,她们的抗尖峰IgG标位也比男性高.
- 在所有组中,抗体依赖性细胞化 (ADCP) 降低;抗体依赖性细胞毒性 (ADCD) 在AstraZeneca接受者中较低.
结论:
- 每个COVID-19疫苗平台都会导致抗体Fc结构和功能的独特,长期变化.
- 这些发现对于指导选择疫苗平台或组合以实现所需的免疫反应至关重要.
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