Related Experiment Video
Updated: Apr 5, 2026
14:23
Generation of Induced Regulatory T Cells from Primary Human Naïve and Memory T Cells
Published on: April 16, 2012
25.0K
What would Treg-cell biology look like when viewed from a rationalized perspective?
1Conceptual Immunology Group, The Salk Institute, La Jolla, CA, USA.
European Journal of Immunology
|August 11, 2015
Summary
Regulatory T (Treg) cells modulate immune responses rather than determining self-nonself discrimination. Their primary function is feedback suppression, not establishing immune tolerance.
Area of Science:
- Immunology
- T-cell regulation
- Immune tolerance
Background:
- Regulatory T (Treg) cells are implicated in maintaining self-tolerance.
- The precise role of Treg cells in self-nonself discrimination remains debated.
Purpose of the Study:
- To challenge the established role of Treg cells in self-nonself discrimination.
- To re-evaluate the function of Treg-mediated suppression in immune responses.
Main Methods:
- Theoretical analysis using the two-stage, two-signal model and the Tritope model of T-cell receptor (TCR) function.
- Reinterpretation of published experimental data on Treg cell function.
Main Results:
- Theoretical models suggest Treg cells are not primary determinants of self-nonself discrimination.
- Reanalysis of data indicates Treg cells primarily function as feedback regulators of effector responses.
Conclusions:
- The major role of Treg-mediated suppression is to modulate effector response magnitude.
- Treg cells do not determine self-nonself discrimination (tolerance).
Related Concept Videos
01:22T Cell Activation and Clonal Selection
17.5K
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...
17.5K
01:24T Cell Types and Functions
3.3K
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...
3.3K
01:16TGF - β Signaling Pathway
11.0K
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...
11.0K