通过阻断GM-CSF驱动的单细胞炎症特征,JAK抑制改善了实验性自身免疫脑膜炎
Shuai Shao1, Chengjuan Chen1, Gaona Shi1
1State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
Acta pharmaceutica Sinica. B
|October 6, 2023
概括
简氏激酶 (JAK) 抑制在实验性自身免疫脑膜炎 (EAE) 中阻断炎症单细胞透和T辅助细胞分化,为多发性硬化症 (MS) 提供了潜在的治疗策略. 这种方法针对驱动中枢神经系统自身免疫的关键途径.
科学领域:
- 免疫学 免疫学 免疫学
- 神经科学是一个神经科学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 单细胞在中枢神经系统 (CNS) 自免疫中至关重要,产生促炎性细胞因子并影响T-辅助 (Th) 细胞分化.
- 简氏酶信号转换器和转录激活器 (JAK-STAT) 途径对于细胞因子信号传递和启动单细胞驱动的免疫反应至关重要.
- 在多发性硬化症 (MS) 发病过程中,JAK-STAT信号在单细胞-T细胞通信中的确切作用仍然不完全理解.
研究的目的:
- 为了研究JAK-STAT通路亚型在实验性自身免疫脑膜炎 (EAE) 病变发生过程中的参与,一个MS模型.
- 确定JAK抑制对中枢神经系统透的炎性单细胞和EAE中的T辅助细胞分化的影响.
主要方法:
- 利用EAE小鼠模型研究脱髓化,Th1/Th17分化和炎症单细胞透.
- 服用JAK抑制剂,以评估它们对单细胞透 (CCR2-依赖的Ly6C单细胞) 和单细胞衍生的树突细胞的影响.
- 量化了产生CD4+ T细胞和GM-CSF分泌的粒细胞-巨细胞殖民地刺激因子 (GM-CSF) 的比例.
主要成果:
- 在EAE小鼠中,JAK抑制有效地阻止了CCR2依赖的Ly6C单细胞和单细胞衍生的树突细胞的透.
- 抑制JAK导致GM-CSF产生CD4+T细胞的减少,并减少了病态Th17细胞中的GM-CSF分泌.
- 这种调节转化了侵入中枢神经系统的单细胞,降低了它们作为抗原呈现细胞和介导组织损伤的能力.
结论:
- 在EAE中,JAK-STAT通路在通过单细胞和Th细胞相互作用调解中枢神经系统炎症方面发挥着重要作用.
- 在EAE中,JAK抑制通过破坏单细胞的GM-CSF驱动的炎症特征来证明EAE的治疗潜力.
- 准JAK信号可能是通过调节关键免疫细胞通信通路来治疗多发性硬化的一种可行的策略.
关键词:
实验性的自身免疫性脑膜炎.转基因-CSFF是什么意思这是一种JAK抑制剂.杰克斯塔特信号传输单细胞衍生的树突细胞.单细胞 (Monocytes) 是一种单细胞.多发性硬化症是多发性硬化症.辅助T细胞是T细胞的辅助细胞.更多相关视频
09:38Determining Immune System Suppression versus CNS Protection for Pharmacological Interventions in Autoimmune Demyelination
Published on: September 12, 2016
12.3K
08:17Author Spotlight: Unveiling the Pathway Linking Obesity to Autoimmune Inflammation in Multiple Sclerosis
Published on: February 23, 2024
4.3K
相关概念视频
The JAK-STAT Signaling Pathway
Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as SH2...
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...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
