系统性失调和分子洞察力对衰弱的流感疫苗响应在老龄化人口的分子洞察力
Saumya Kumar1,2, Martijn Zoodsma1,2, Nhan Nguyen1,2
1Centre for Individualised Infection Medicine (CiiM), a joint venture between the Helmholtz Centre for Infection Research (HZI) and Hannover Medical School (MHH), Hannover, Germany.
Science advances
|September 27, 2024
概括
老年人往往对流感疫苗的免疫反应较弱. 这项研究发现,在接种疫苗之前,高水平的互白素-15 (IL-15) 抑制了抗体的产生,这表明了改善老年人疫苗有效性的新方法.
科学领域:
- 免疫学 免疫学 免疫学
- 老年学是一门学科.
- 疫苗学 疫苗学 疫苗学
背景情况:
- 在老年人 (>65岁) 中,流感疫苗的有效性降低.
- 免疫对疫苗接种的反应变得异质,并且随着年龄的增长而减少.
研究的目的:
- 为了研究老年人对辅助型流感疫苗 (FluAd) 的纵向免疫反应.
- 为了确定这种人口群体中疫苗反应不佳的基础分子机制.
主要方法:
- 在两个流感季节对234名参与者 (>65岁) 的长度研究.
- 系统层面分析多组学 (六种模式) 和血清学数据.
- 使用小鼠模型进行体内和体外实验验证.
主要成果:
- 与响应者相比,缺乏依赖时间的免疫变化,表明系统性失调.
- 疫苗接种前高水平的插白素-15 (IL-15) 与抗体产生有负面关联.
- 一个由IL-15驱动的自然杀手细胞轴被确定为抑制疫苗诱导的抗体产生的机制.
- 长链脂肪酸的一个子集被提议作为低反应者的慢性炎症调节剂.
结论:
- 老年人流感疫苗反应不佳与全身失调和潜在的慢性炎症有关.
- 互乐金-15通过自然杀手细胞轴在疫苗诱导的抗体产生中起抑制作用.
- 研究结果表明,有潜在的药理干预措施可以提高老年人疫苗的疗效.
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