通过ICOSL抑制T毛囊辅助细胞来减轻原蛋白诱导的关节炎
Fei-Fei Huo1, Xue-Yang Zou1, Yi Zhang1
1Department of Intensive Care Medicine, The First Hospital of Jilin University, Department of Immunology, College of Basic Medical Sciences. Clinical Laboratory, The First Hospital of Jilin University, Changchun, China.
International immunopharmacology
|December 3, 2024
概括
在类风湿性关节炎 (RA) 患者中,自身免疫调节剂 (Aire) 降低. 下方Aire抑制诱导性共刺激分子接体 (ICOSL),减少T毛囊辅助细胞 (Tfh) 和自身抗体的产生,可能缓解RA症状.
科学领域:
- 免疫学 免疫学 免疫学
- 类风湿病学 类风湿病学
- 分子生物学分子生物学
背景情况:
- 类风湿性关节炎 (RA) 是一种慢性自身免疫性疾病,其特征是关节炎症和损伤.
- 自身免疫调节剂 (Aire) 和诱导性共刺激分子连接体 (ICOSL) 在RA病变发生过程中的作用尚未完全理解.
- 毛囊T辅助细胞 (Tfh) 在自身免疫性疾病中对B细胞激活和自身抗体产生至关重要.
研究的目的:
- 评估RA患者的Aire和ICOSL表达和Tfh细胞数量.
- 调查这些因素与RA严重性标志物之间的相关性 (DAS28,Anti-CCP).
- 在关节炎的小鼠模型中探索Aire的治疗潜力.
主要方法:
- 在RA患者中量化Aire,ICOSL和Tfh细胞.
- 与DAS28和Anti-CCP等临床参数的相关性分析.
- 在体内研究使用原诱导性关节炎 (CIA) 鼠标模型与Aire过度表达的树突细胞和ICOSL转移.
主要成果:
- 在RA患者的PBMC中,空气表达显著减少.
- 在Aire,ICOSL和Tfh细胞数量之间以及与Anti-CCP和DAS28.28.之间观察到负相关性.
- 空气转移通过调节Tfh分化,B细胞发育和自身抗体生产,部分通过ICOSL改善了小鼠的关节炎症状.
结论:
- 空气在类风湿性关节炎中起着保护作用.
- 艾尔可以通过降低ICOSL的调节来缓解RA,随后抑制Tfh细胞分化和自身抗体的产生.
- 针对Aire-ICOSL-Tfh轴为RA提供了一个潜在的治疗策略.
更多相关视频
相关概念视频
T Cell Types and Functions
951
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...
951
Inflammatory Response
1.8K
An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
1.8K
Drugs for Treatment of Crohn's Disease in IBD Using Biologic Agents: Anti-TNF
115
Tumor Necrosis Factor (TNF), a proinflammatory cytokine, contributes significantly to the inflammation seen in Crohn's disease. It exists as soluble TNF and membrane-bound TNF, with actions mediated through TNF receptors (TNFR). TNFR activation leads to the release of proinflammatory cytokines, T-cell activation, collagen production, and leukocyte migration, all contributing to inflammation in Crohn's disease. Anti-TNF monoclonal antibodies, namely infliximab (Remicade), adalimumab...
115
Drugs for Treatment of Crohn's Disease in IBD Using Immunomodulatory Agents
142
Crohn's disease is an inflammatory bowel disorder marked by chronic inflammation of the GI tract. Various treatment strategies for Crohn's disease are employed, such as immunomodulatory agents, glucocorticoids, and biologics or anti-TNF therapy. Azathioprine (Imuran), a commonly used immunomodulatory drug for Crohn's disease, is converted in the body to mercaptopurine, which inhibits purine biosynthesis and cell proliferation. Both are utilized in severe cases of Inflammatory Bowel...
142
The JAK-STAT Signaling Pathway
8.7K
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...
8.7K
T Cell Activation and Clonal Selection
658
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...
658


