人类和之间的流感免疫力中的功能性,免疫遗传和结构性趋同
Maya Sangesland1, Ning Li2, Yaroslav Tsybovsky2
1Vaccine Research Center (VRC), National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
Science translational medicine
|September 10, 2025
概括
接种了流感血素 (HA) 干免疫原的Cynomolgus,产生了类似人类的广泛中和抗体 (bnAbs). 这些抗体向保存的HA干区域,验证了通用流感疫苗开发的模型.
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:
- 人类B细胞对流感血质素 (HA) 干的免疫力受到限制,阻碍了研究.
- HA干是流感疫苗的普遍目标.
- 在人类之外研究HA干免疫力存在挑战.
研究的目的:
- 调查Cynomolgus是否可以引起类似于人类的B细胞对HA干免疫原体的反应.
- 评估模型用于流感的转化疫苗学.
- 了解大致中和抗体 (bnAb) 产生抗流感HA的免疫遗传基础.
主要方法:
- 用HA干免疫原体对Cynomolgus的疫苗接种.
- 对B细胞谱系反应的分析,重点关注抗体V基因使用和表位向.
- 引起抗体的功能和结构特征.
- 从派生的bnAbs与人类对应物进行比较.
主要成果:
- 产生了类似人类的公共B细胞系,准保存的HA干和表位.
- 中的中央干bnAbs来自VH1-138,类似于人类VH1-69.
- 子中的 bnAbs含有正规NWP图案,类似于人类的bnAbs.
- 引起的bnAb血统在功能和结构上与人类bnAbs相似,由生殖系编码的图案介导.
结论:
- 的免疫球蛋白谱系支持类似人类的公众bnAb对流感HA的反应.
- 模型对通用流感疫苗的翻译疫苗学有价值.
- 同源的生殖系编码的免疫力发挥着重要作用,这表明和人类的保护免疫谱的进化.
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