单细胞转录组学揭示了牛群中疫苗疗效的关键免疫驱动因素
Annaleise Wilson1, Pâmela A Alexandre2, Aaron M Brice3
1CSIRO Health & Biosecurity, Australian Centre for Disease Preparedness, Geelong, VIC, Australia. annaleise.wilson@csiro.au.
这项研究使用单细胞测序绘制了牛免疫细胞的地图,揭示了安格斯牛的独特细胞免疫反应 (Cell-IR). 高细胞IR牛显示CD8-γδT细胞和骨髓状细胞活性增加,这对抗病能力至关重要.
科学领域:
- 兽医免疫学 兽医免疫学
- 牛的基因组学 牛的基因组学
- 单细胞转录组学 单细胞转录组学
背景情况:
- 了解牛免疫细胞种群对于动物福利和疾病抵抗力至关重要.
- 延迟型过敏症 (DTH) 作为牛细胞免疫反应 (Cell-IR) 的代理.
研究的目的:
- 用单细胞RNA测序对安格斯牛的免疫细胞种群进行全面的特征化.
- 将免疫细胞组成与功能性免疫表型和Cell-IR联系起来.
主要方法:
- 来自Angus牛的29000多个外围血液单核细胞 (PBMC) 的单细胞RNA测序.
- 无监督的聚类来识别主要的免疫细胞类型 (T细胞,B细胞,单细胞,树突细胞).
- 不同基因表达和细胞间通信分析 (CellChat).
主要成果:
- 确定了主要的免疫群体,包括CD4+,CD8+T细胞,gδT细胞,B细胞,单细胞和树突细胞.
- 低细胞IR牛表现出较高的NKT炎症反应.
- 高细胞IR牛显示CD8-γδT细胞和促炎性髓状细胞活性增加.
- 在促炎性细胞因子级联中突出显示了IL-1β-IL-1R1连体-受体相互作用.
结论:
- 提供安格斯牛类PBMCs的高分辨率地图集.
- 建立了一个框架,用于将免疫细胞概况与牛的功能性免疫反应相关联.
- 提供了对影响疾病抵抗力和动物福利的免疫机制的见解.
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