TSLP塑造了埃索诺菲尔性食道炎中记忆CD4+T细胞的致病反应
Yrina Rochman1, Michael Kotliar1, Netali Ben-Baruch Morgenstern1
1Division of Allergy and Immunology,Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, OH 45229, USA.
Science signaling
|September 12, 2023
概括
胸膜 stromal lymphopoietin (TSLP) 直接刺激eosinophilic食道炎 (EoE) 中的CD4+ T细胞,从而导致过敏性炎症. 血液中对TSLP敏感的T细胞可以作为EoE的诊断标志物.
科学领域:
- 免疫学 免疫学 免疫学
- 过敏和炎症的发生
- 胃肠病学 胃肠病学
背景情况:
- 胸膜 stromal lymphopoietin (TSLP) 是2型免疫反应的关键调解剂,现有的治疗针对喘的TSLP.
- 性食道炎 (EoE) 是一种过敏性炎症性疾病,与TSLP的遗传变异有关.
研究的目的:
- 调查TSLP是否直接刺激人类CD4+T细胞.
- 为了确定这种TSLP介导的刺激是否与酸性食道炎 (EoE) 相关.
主要方法:
- 从EoE患者和对照对食道CD4+T细胞的量化TSLP受体表达.
- 评估TSLP诱导的STAT5酸化作为TSLP响应性的衡量标准.
- 分析了TSLP对CD4+T细胞增殖,细胞因子产生,基因表达和表观遗传修饰 (BATF,IRF4结合部位) 的影响.
- 相关联的TSLP-响应性T细胞数量与食道乙氨基酸细胞计数.
主要成果:
- 与对照人群相比,来自EoE患者的食道CD4+T细胞的比例更高,表达了TSLP受体并对TSLP作出反应.
- 在患有EoE的个体中观察到循环中的TSLP响应性CD4+T细胞数量的增加.
- TSLP通过涉及BATF和IRF4的feed-forward循环增强了CD4+T细胞的增殖,2型细胞因子的产生,并调节了包括自身受体在内的基因表达.
- 响应TSLP的CD4+T细胞计数与食道异osinophilia相关.
结论:
- TSLP直接刺激CD4+T细胞,导致EOE中的过敏炎症.
- 具有TSLP反应的循环CD4+T细胞可以作为EoE诊断的潜在生物标志物.
- 针对TSLP可能为管理EoE提供治疗策略.
相关概念视频
01:24T Cell Types and Functions
1.1K
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
1.1K
01:22T Cell Activation and Clonal Selection
801
T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
Naive T cells that have not yet encountered an antigen express two primary CD...
801