在分裂无活化流感病毒疫苗接种后,B细胞动态是导致反应不佳的原因
Laise Rodrigues Reis1, Vanessa Silva-Moraes1, Andréa Teixeira-Carvalho2
1Florida Research and Innovation Center, Cleveland Clinic, Port Saint Lucie, FL, United States.
Frontiers in immunology
|December 5, 2024
概括
用Fluzone接种疫苗会引起独特的H1N1 HA特异性B细胞记忆反应. 持续响应者显示激活B细胞增加,而非响应者显示过渡性和IgM+记忆B细胞增加,影响疫苗的疗效.
科学领域:
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
背景情况:
- 了解B细胞记忆对于有效的流感疫苗接种至关重要.
- 个体对疫苗的免疫反应可能会有很大差异.
研究的目的:
- 在Fluzone疫苗接种后,调查H1N1 HA特异性B细胞记忆反应的差异.
- 为了比较持续响应者与非响应者的免疫特征.
主要方法:
- 根据HAI标题将参与者分为持续响应者和不响应者.
- 疫苗接种前和后对H1N1HA特异性B细胞子集 (CD21,血细胞,血细胞,过渡性B细胞,IgM+,IgA,IgG,DN细胞) 的分析.
- 尺寸缩小和相关性分析.
主要成果:
- 持续反应者在激活的B细胞 (CD21 +,血细胞,血细胞) 中表现出更高的折叠变化.
- 持续不响应者表现出过渡性B细胞的增加和IgM+记忆B细胞的更高频率/折叠变化.
- 在不同组之间观察到IgA,IgG和双阴性 (DN) 记忆B细胞反应的明显模式.
- 响应者和不响应者之间,HAI标位和特定B细胞子集之间的相关性不同.
结论:
- 流感疫苗接种诱导基于先前的免疫状态的差异性记忆B细胞反应.
- 识别不同的B细胞概况可以为提高流感疫苗有效性的策略提供信息.
- 进一步研究疫苗诱导的B细胞复杂性是有必要的.
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