基于SARS-CoV-2菌株的疫苗的连续施用有效地诱导了对以前未暴露的Omicron菌株的强有力的免疫反应
Qianying Wang1, Shuhui Wang1, Ying Liu1
1State Key Laboratory for Infectious Disease Prevention and Control, National Center for AIDS/STD Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
Pathogens (Basel, Switzerland)
|May 27, 2023
概括
顺序无活化疫苗可以增强对COVID-19变种的免疫力. 这一策略增强了T细胞反应和抗体保护,为未来的SARS-CoV-2菌株提供了改善交叉免疫力的途径.
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:
- 由SARS-CoV-2引起的持续的COVID-19大流行需要策略来增强对新兴变种的免疫力.
- 第一代疫苗需要加强,以保持和扩大对新型SARS-CoV-2菌株的保护.
研究的目的:
- 调查不同类型的基于序列的无活化疫苗的连续施用是否与同源免疫接种相比改善了免疫反应.
- 评估各种非活化疫苗组合在诱导针对SARS-CoV-2变种的保护性免疫力的有效性.
主要方法:
- 利用小鼠模型来测试五种不同的非活化疫苗组合.
- 在顺序和同源疫苗接种策略之间,比较免疫反应,包括抗原特异性T细胞免疫力和中和抗体标位.
主要成果:
- 顺序接种疫苗的策略表明,在引起早期,强大的抗原特异性T细胞免疫反应方面,与同源免疫接种相比,具有显著的优势.
- 三剂量连续接种方案诱导了针对SARS-CoV-2 Omicron BA.2菌株的优异中和抗体反应.
结论:
- 顺序无活化疫苗的使用提供了一种有希望的方法来增强T细胞免疫力和抗体对抗各种SARS-CoV-2变异的反应.
- 研究结果提供了优化现有疫苗平台的证据,以实现对当前和未来菌株的更广泛的交叉免疫力,包括以前未遇到的菌株.
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