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Updated: Sep 11, 2025

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婴儿对全细胞和非细胞百日咳疫苗的免疫反应的免疫学概况

C Buddy Creech¹, Mariana Leguia², Johannes B Goll³

¹Vanderbilt Vaccine Research Program, Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA. buddy.creech@vumc.org.

|August 11, 2025

概括

全细胞百日咳疫苗 (DTP) 引起的早期免疫反应比非细胞性百日咳疫苗 (DTaP) 强,这是TLR信号传递和细胞化途径所表明的. 接种后,DTP还导致更多的PT特异性B细胞.

科学领域:

免疫学免疫学免疫学
疫苗学疫苗学疫苗学
微生物学微生物学

背景情况:

细胞性百日咳疫苗 (DTaP) 的免疫力减弱,增加了百日咳的风险.
全细胞百日咳疫苗 (DTP) 可能提供更持久的保护,特别是当作为第一剂时.

研究的目的:

调查婴儿对DTP与DTaP的早期免疫反应.
为了比较初级和辅助疫苗接种后的分子和细胞免疫特征.

主要方法:

来自56名婴儿的外周血液单核细胞 (PBMC) 的RNA测序和核糖体分析.
免疫反应在基线,第二天和疫苗接种后的第8天以及强剂后的分析.
路径丰富分析以确定差异激活的免疫路径.

主要成果:

在第2天和第8天,DTP接受者表现出丰富的TLR信号和FcYR介导的细胞路径.
与DTaP相比,DTP的使用导致IRAK-4和IL-1β水平增加.
在DTP接种者中,在增剂接种疫苗后观察到更高频率的百日咳毒素 (PT) 特定的B细胞.

结论:

与DTaP相比,DTP诱导了明显的和可能更强大的早期免疫反应.
研究结果提供了对DTP潜在的长期保护的免疫学基础的见解.
结果可能有助于开发下一代百日咳疫苗.

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