调控性T细胞通过IL-2调节抑制转基因-CSF生产的T辅助细胞,以抑制免疫病理
Sara Costa-Pereira1, Margit Lanzinger1, Nicolás Núñez2
1Institute of Experimental Immunology, University of Zurich, 8057 Zurich, Switzerland.
Cell reports
|May 2, 2025
概括
调节性T (Treg) 细胞通过控制GM-CSF等1型细胞因子来预防自身免疫. 损失Treg细胞释放这些细胞因子,导致致命的炎症和由细胞介导的组织损伤.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 调节性T (Treg) 细胞对于免疫平衡和预防自身免疫是必不可少的.
- Treg细胞的功能障碍或枯竭导致严重的炎症和器官损伤,这是由于不受控制的T细胞增殖.
研究的目的:
- 研究Treg细胞在预防自身免疫性炎症方面的稳定状态功能.
- 为了确定特定的T辅助 (TH) 细胞衍生的细胞因子和因子细胞,负责组织损伤后的边缘耐受性损失.
- 阐明Treg细胞抑制自身免疫反应的机制.
主要方法:
- 在体内基因向和命运映射技术.
- 高维细胞测量用于详细的细胞分析.
- 在Treg细胞缺乏的背景下评估细胞因子概况和细胞反应.
主要成果:
- 鉴定出1型细胞因子,特别是颗粒细胞-巨细胞殖民地刺激因子 (GM-CSF) 和干扰素 (IFN)γ,是免疫病理和死亡率的关键驱动因素,而不是IL-17A.
- 转基因-CSF被证明可以促进单细胞和粒细胞的组织透,增强它们的破坏性能力.
- 由Treg细胞调节的IN-2 (IL-2) 信号传递在抑制致病性GM-CSF产生TH细胞方面发挥着关键作用.
结论:
- 特雷格细胞对于控制1型免疫反应至关重要,特别是那些涉及GM-CSF的免疫反应.
- 对于Treg细胞来说,IL-2信号传递至关重要,以抑制GM-CSF产生TH细胞,并防止过度的细胞驱动的组织破坏.
- 了解这些机制为预防由炎症和组织损伤为特征的自身免疫性疾病提供了洞察力.
相关概念视频
T Cell Types and Functions
615
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...
615
Regulation of Hematopoietic Stem Cells
3.1K
All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
3.1K
TGF - β Signaling Pathway
7.2K
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
7.2K
Inflammatory Response
1.6K
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,...
1.6K
T Cell Activation and Clonal Selection
526
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...
526


