相关实验视频

Updated: May 6, 2026

Isolation and Th17 Differentiation of Naïve CD4 T Lymphocytes

Isolation and Th17 Differentiation of Naïve CD4 T Lymphocytes

Published on: September 27, 2013

在患有自体优势超IgE综合征的人群中,T(H) 17细胞分化受损

Joshua D Milner¹, Jason M Brenchley, Arian Laurence

¹Laboratory of Immunology, National Institutes of Health, Bethesda, Maryland 20892, USA.

|March 14, 2008

概括

自体主导的超IgE综合征 (HIES) 与缺乏T辅助17 (T(H) 17) 细胞有关. 这种T(H) 17细胞生产的缺陷解释了HIES特征的严重感染.

科学领域:

免疫学免疫学免疫学
遗传学是一个遗传学.

背景情况:

自体主导的超IgE综合征 (HIES),也称为约伯综合征,呈现出重复严重的感染,湿疹和结缔组织异常.
STAT3基因的突变与HIES有关,但导致特定感染易感性的确切免疫缺陷仍未确定.
之前的研究发现了可变的T细胞功能障碍,包括细胞因子产生和淋巴扩散受损,但缺乏对HIES感染特征的明确解释.

研究的目的:

确定在HIES中增加感染易感性背后的特定免疫异常.
研究STAT3信号在HIES患者T细胞功能和分化中的作用.
阐明将HIES中的遗传缺陷与观察到的临床表型联系在一起的机制.

主要方法:

在HIES个体刺激后对T细胞细胞因子 (IL-17,IL-2,TNF,IFN-γ) 生产的分析.
在实验室中对原始T细胞分化成T (H) 17细胞的评估.
从HIES患者的T细胞中测量与视网膜相关的孤儿受体 (ROR) - 马表达.

主要成果:

来自HIES个体的T细胞在刺激时显示完全没有交白素-17 (IL-17) 的产生.
这种IL-17缺乏是特异性的,因为IL-2,瘤亡因子和干扰素-的产生保持不变.
来自HIES患者的天真T细胞在体外未能分化为T(H) 17细胞,并显示了减少的ROR-马表达,表明T(H) 17细胞生成中的STAT3依赖缺陷.

结论:

由于STAT3信号受损,无法产生T(H) 17细胞是导致HIES患者对真菌和细胞外细菌感染的易感性的关键机制.
这一发现澄清了HIES的免疫基础,将特定的T细胞子集缺乏与特征性的复发性感染联系起来.
准T(H) 17细胞功能或STAT3信号可能为管理HIES提供治疗途径.

更多相关视频

Mouse Naïve CD4+ T Cell Isolation and In vitro Differentiation into T Cell Subsets

Mouse Naïve CD4+ T Cell Isolation and In vitro Differentiation into T Cell Subsets

Published on: April 16, 2015

Author Spotlight: Achieving High-Purity In Vitro Differentiation of Th17 Cells Using Cytokine Concentration Modulation

Author Spotlight: Achieving High-Purity In Vitro Differentiation of Th17 Cells Using Cytokine Concentration Modulation

Published on: October 25, 2024

相关概念视频

T Cell Types and Functions

T Cell Types and Functions

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...

Immunodeficiency Diseases

Immunodeficiency Diseases

Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency...

Type I Diabetes I: Introduction

Type I Diabetes I: Introduction

Type 1 diabetes mellitus is a chronic metabolic disorder characterized by an absolute deficiency of insulin resulting from the autoimmune destruction of pancreatic β-cells. Although it can occur at any age, it is most commonly diagnosed in childhood, adolescence, or early adulthood. The loss of insulin production impairs cellular glucose uptake, resulting in persistent hyperglycemia and necessitating lifelong insulin therapy.Autoimmune Destruction of β-CellsThe hallmark of type 1...

Inflammatory Bowel Disease III: Crohn's Disease

Inflammatory Bowel Disease III: Crohn's Disease

Crohn’s disease is a chronic, relapsing form of inflammatory bowel disease characterized by segmental, transmural inflammation that can affect any part of the gastrointestinal tract. Its pathogenesis arises from a combination of genetic susceptibility, environmental exposures, epithelial barrier dysfunction, and immune dysregulation. Together, these factors lead to an exaggerated immune response against components of the gut microbiome.Genetic and Environmental InfluencesMultiple genetic...