人类桃体有机体揭示了调节体和细胞对ChAdOx1反应的先天通路
Maria Fransiska Pudjohartono1,2,3, Kate Powell4, Eleanor Barnes1,4,5
1Translational Gastroenterology and Liver Unit, University of Oxford, Oxford, United Kingdom.
像ChAdOx1 nCoV-19这样的腺病毒载体疫苗可以激活先天免疫力. 血细胞树突细胞 (pDC) 通过IFN-ɑ驱动适应反应,这对疫苗的疗效至关重要.
科学领域:
- 免疫学
- 疫苗学
背景情况:
- 腺病毒载体疫苗对COVID-19有效.
- 这些平台缺乏对先天免疫调节的机制理解.
研究的目的:
- 使用人类桃体器官模型研究对ChAdOx1 nCoV-19适应性反应的先天免疫调节.
主要方法:
- 使用人类桃体器官来建模ChAdOx1 nCoV-19疫苗接种.
- 在14天内监测先天激活,细胞因子释放和T/ B细胞反应.
主要成果:
- 在24小时内先天激活和释放细胞因子,随后发生适应性反应.
- 血细胞树突细胞 (pDC) 的转导率很高,并产生了关键的IFN-ɑ.
- 通过依赖IFN和独立的途径增强了IL-6的幽默免疫力.
结论:
- 对于ChAdOx1诱导的幽默免疫,pDC衍生的IFN-ɑ具有关键作用.
- IL-6和IFN-ɑ复杂地调节疫苗诱导的免疫反应.
- 桃体有机体对研究疫苗机制具有前景.
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