免疫反应基因1:中枢神经系统自身免疫中的Th17细胞致病性的线粒体关键
Mohammad Nematullah1, Mena Fatma1, Guoli Zhou2
1Department of Neurology, Henry Ford Health System, Detroit, MI 48202.
概括
免疫反应基因1 (Irg1) 保护中枢神经系统免受多发性硬化症等自身免疫性疾病的影响. 失去Irg1会通过促进致病的Th17细胞分化,加剧实验性自身免疫脑膜炎.
科学领域:
- 神经免疫学 神经免疫学
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 致病性T助手17 (Th17) 细胞与中枢神经系统 (CNS) 自免疫性疾病有关,包括多发性硬化症 (MS).
- 控制中枢神经系统自身免疫中的Th17细胞功能的内生调节机制尚未完全理解.
- 在炎症条件下,免疫反应基因1 (Irg1) 在质细胞中被确定为上调.
研究的目的:
- 研究免疫反应基因1 (Irg1) 在中枢神经系统自身免疫性疾病的发病过程中的作用.
- 为了确定Irg1在实验性自身免疫脑膜炎 (EAE) 的背景下是否有害或保护,MS的临床前模型.
主要方法:
- 主要大脑质细胞的RNA测序 (RNA-seq) 分析.
- 在EAE模型动物的脊髓中验证Irg1表达.
- 在EAE模型中对Irg1淘汰赛 (KO) 小鼠进行表型分析.
- 在Rag-1 KO小鼠的收养转移实验中.
- 单细胞RNA测序 (scRNA-seq) 是一种方法.
- 骨髓奇美拉的实验. 骨髓奇美拉的实验.
主要成果:
- 在EAE小鼠中,Irg1表达在髓状细胞,CD4细胞和B细胞中升高.
- 在Irg1 KO小鼠中,EAE恶化,免疫细胞透增加,病原Th17细胞水平更高 (IL17a+,GM-CSF+,IFNγ+).
- 在巨细胞中缺少Irg1增加了II类表达,通过NLRP3/IL-1β轴促进了致病性Th17极化.
- 缺乏Irg1的免疫细胞表现出持续的致病性和炎症性表型.
结论:
- 在中枢神经系统的自身免疫性疾病中,包括MS,Irg1起着保护作用.
- 缺少Irg1促进了致病性Th17细胞的发展,加剧了自身免疫神经炎症.
- 向Irg1可能为中枢神经系统自身免疫性疾病提供治疗策略.
相关概念视频
T Cell Types and Functions
1.4K
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...
1.4K
Cytotoxic T Cells-mediated Immune Response
2.0K
Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
2.0K
Autoimmune Disorders
676
Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
Concept and Mechanism of Autoimmune Diseases
The immune...
Concept and Mechanism of Autoimmune Diseases
The immune...
676
Immune Response Against Viral Pathogens
917
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
917
Antigens Involved in Adaptive Immunity
672
An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and...
Complete Antigens
Complete antigens possess both immunogenicity and...
672
Cells of the Adaptive Immune Response
4.1K
The T and B lymphocytes of the adaptive immune system develop from common lymphoid progenitor cells in the bone marrow. These progenitors give rise to precursors that eventually develop into both T and B lymphocytes. As these precursors mature, they gain the ability to detect and respond to foreign antigens in the body, a process known as immunocompetence. Additionally, these precursors acquire self-tolerance, a process that ensures they do not react to self-antigens. This intricate system...
4.1K


