成年人免疫接种AS01辅助疫苗的单细胞的功能和表观遗传变化
Viviane Bechtold1, Kinga K Smolen1,2, Wivine Burny1
1GSK, Rixensart, 1330, Belgium.
Science translational medicine
|July 31, 2024
概括
疫苗中的AS01辅助剂通过改变先天性免疫细胞来增强免疫反应. 这项研究揭示了AS01疫苗接种诱导单细胞和树突细胞的长期功能和表观遗传变化,有助于疫苗的疗效.
科学领域:
- 免疫学 免疫学 免疫学
- 疫苗学 疫苗学 疫苗学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 辅助剂AS01对于几种人类疫苗的免疫性和疗效至关重要.
- 虽然AS01激活了先天免疫系统,但其对先天细胞功能和表观遗传重塑的长期影响尚不清楚.
研究的目的:
- 研究AS01辅助疫苗对健康成年人循环单细胞和树突细胞的长期功能和表观遗传后果.
主要方法:
- 使用了一种含有乙型肝炎表面抗原和AS01的模型疫苗,将其与添加的疫苗进行比较.
- 使用单细胞分析来评估疫苗接种后单细胞和树突细胞的表观遗传变化和功能变化.
- 监测细胞数量的变化,人类白细胞抗原 (HLA) -DR表达,以及对托尔类受体和干扰素-马刺激的反应.
主要成果:
- AS01辅助疫苗增加了循环单细胞和HLA-DR表达,与记忆CD4+T细胞反应相关.
- 单细胞分析确定了单细胞和树突细胞子集的表观遗传修饰,影响了转录因子的可访问性 (例如,AP-1,GATA,C/EBP,IRF).
- 在先天细胞中观察到减少的促炎反应和加强对干扰素-的反应,在接种疫苗后6个月内持续表观遗传变化.
结论:
- AS01辅助接种疫苗诱导单细胞子集的显著重编程.
- 这些天生的免疫细胞的功能和表观遗传变化可能有助于疫苗诱导的整体保护,超出了抗原特异性.
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