相关实验视频
Updated: May 16, 2025

08:52
Evaluation of Host-Pathogen Responses and Vaccine Efficacy in Mice
Published on: February 22, 2019
10.5K
在Bordetella pertussis疫苗反应中的Th1两极化通过一个积极的反循环来维持
Lisa Willemsen1, Jiyeun Lee1, Pramod Shinde1
1Center for Infectious Disease and Vaccine Research, La Jolla Institute for Immunology, La Jolla, CA, USA.
Nature communications
|April 1, 2025
概括
尽管接种了疫苗,百日咳疫情仍然存在. 全细胞百日咳 (wP) 疫苗比非细胞 (aP) 疫苗诱导更持久的Th1免疫力,与早期干扰素反应有关. 促进这种途径可能会改善aP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
- 微生物学 微生物学
背景情况:
- 百日咳 (百日咳) 疫情在全球范围内正在增加,即使疫苗接种率很高.
- 从全细胞 pertussis (wP) 转向非细胞性 pertussis (aP) 疫苗的转变与 Bordetella pertussis (BP) 疫情的增加有关.
- wP疫苗接种与更强大,更持久的保护性免疫有关,其特征是Th1极化记忆T细胞反应.
研究的目的:
- 为了研究接种了wp或aP疫苗的个体的免疫反应概况.
- 为了确定Tdap增强疫苗接种后T细胞两极分化的相关物质.
- 要了解由wP疫苗接种引起的持久Th1反应背后的机制.
主要方法:
- 在wP和aP-primed个体中对免疫反应的多omics概况.
- 在Tdap增强疫苗接种前后对T细胞两极分化的分析.
- 测量转录变化,血IFN-γ和化学激素水平后的增强剂.
主要成果:
- 早期的干扰素通路激活 (转录性变化,IFN-γ,化学激素),在增强剂后的1-3天达到峰值.
- 这种早期的干扰素反应与28日记忆T细胞的Th1两极化有很强的相关性.
- 接种wP疫苗的个体通过这种早期干扰素反应保持了Th1偏振.
结论:
- 早期的记忆干扰素反应是百日咳疫苗接种后Th1偏振的一个关键相关因子.
- 由于这种干扰素反应,wP-primed个体表现出持续的Th1极化.
- 在接种疫苗期间刺激干扰素通路可能会增强aP-primed个体的Th1反应,从而可能改善对百日咳的保护.
相关概念视频
Vaccinations
43.1K
Overview
43.1K
B Cell Activation and Differentiation
1.3K
The adaptive immune response, a sophisticated defense mechanism, relies on the activation and differentiation of B lymphocytes, or B cells. These processes enable our bodies to mount a tailored response against specific pathogens such as bacteria, free virus particles, toxins, and parasites.
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
When naive B cells encounter a specific antigen that can bind to the B cell receptor (BCR) on their surface, they undergo sensitization to respond to the antigen's presence. Sensitization begins with...
1.3K
Defense Against Bacterial Pathogens
1.4K
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
1.4K
Humoral Immune Responses
70.9K
Overview
70.9K

