相关实验视频

Updated: Feb 28, 2026

In Vitro Differentiation of Human CD4+FOXP3+ Induced Regulatory T Cells (iTregs) from Naïve CD4+ T Cells Using a TGF-β-containing Protocol

In Vitro Differentiation of Human CD4⁺FOXP3⁺ Induced Regulatory T Cells (iTregs) from Naïve CD4⁺ T Cells Using a TGF-β-containing Protocol

Published on: December 30, 2016

调控性T细胞抑制模式的相对性

Lu Bai¹, Vivek Choudhary¹, Yongqiang Feng¹

¹Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, United States.

Frontiers in immunology

|February 26, 2026

概括

调节性T (Treg) 细胞维持免疫耐受性. 它们的抑制模式根据抗原水平和T细胞受体信号强度的变化,影响免疫反应.

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:

通过抗原特异性和旁观者抑制,Foxp3表达的CD4调节T (Treg) 细胞对于免疫耐受性至关重要.
特雷格细胞具有多样化的T细胞抗原受体 (TCR) 谱,但其抗原特异性获取有所不同,从而导致免疫覆盖的不确定性.
特雷格细胞复杂的功能模式对免疫学研究提出了挑战.

研究的目的:

提出一个模型,其中Treg抑制模式因抗原水平和TCR信号强度而异.
研究抗原度如何影响Treg细胞功能和免疫调节.
为潜在的治疗应用确定修改Treg细胞行为的因素.

主要方法:

该研究提出了基于现有文献和免疫学原理的理论模型.
建议进行进一步的实验验证,以测试该模型的适用性.
识别Treg功能的修饰剂是未来研究的一个关键方面.

主要成果:

拟议的模型表明抗原水平,TCR信号传递和Treg抑制疗效之间的动态关系.
在TCR谱的发展变化影响Treg细胞的代表性和目标覆盖率.
了解这些动态对于破译各种免疫环境中的Treg细胞功能至关重要.

结论:

特雷格细胞抑制模式不是静态的,而是适应特定的免疫学背景,特别是抗原可用性和TCR信号强度.
该模型为理解Treg细胞异质性和功能提供了一个框架.
需要进一步的研究来验证和完善这种模型用于转化免疫学和治疗策略.

关键词:

在TCR的曲目中,TCR的曲目包括:抗原负载的抗原负载.对抗原特异性抑制抑制.通过旁观者抑制抑制.免疫耐受性免疫耐受性监管T细胞的监管性T细胞

更多相关视频

In Vitro and In Vivo Assessment of T, B and Myeloid Cells Suppressive Activity and Humoral Responses from Transplant Recipients

In Vitro and In Vivo Assessment of T, B and Myeloid Cells Suppressive Activity and Humoral Responses from Transplant Recipients

Published on: August 12, 2017

Generation of Human Chimeric Antigen Receptor Regulatory T Cells

Generation of Human Chimeric Antigen Receptor Regulatory T Cells

Published on: January 3, 2025

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...

T Cell Activation and Clonal Selection

T Cell Activation and Clonal Selection

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...

Receptor Downregulation in MVBs

Receptor Downregulation in MVBs

Multivesicular bodies (MVBs) are mature endosomes that sort ubiquitinated proteins and then fuse with lysosomes to degrade the sorted proteins. Epidermal growth factor (EGF) and its receptor (EGFR) form a complex that can be internalized through endocytosis, sorted into an MVB, and later degraded.
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR...