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Updated: Jun 12, 2026

In Vivo Augmentation of Gut-Homing Regulatory T Cell Induction
Published on: January 22, 2020
Regulatory T-cell stability and plasticity in mucosal and systemic immune systems
M Murai1, P Krause, H Cheroutre
1Division of Developmental Immunology, La Jolla Institute for Allergy and Immunology, La Jolla, California, USA.
Regulatory T cells (Treg), crucial for immune balance, rely on the Foxp3 transcription factor. Emerging research suggests Treg stability can be compromised, potentially leading to inflammation, especially in the gut.
Area of Science:
- Immunology
- Molecular Biology
Background:
- Regulatory T cells (Treg) are essential for immune homeostasis.
- Treg express the forkhead box p3 (Foxp3) transcription factor, critical for their function.
- Two main Treg subsets exist: natural Treg (nTreg) and induced Treg (iTreg).
Purpose of the Study:
- To explore the role of Foxp3 in Treg differentiation and function.
- To investigate the plasticity of Treg populations under specific conditions.
- To understand the implications of Treg instability in intestinal immunity.
Main Methods:
- Analysis of Foxp3 expression and Treg markers.
- Treg differentiation and functional assays.
- In vivo studies examining Treg behavior in the gut.
Main Results:
- Foxp3 is a key regulator for Treg differentiation, maintenance, and suppressive functions.
- Intestinal immune challenges favor the generation of iTreg.
- Treg plasticity, including Foxp3 loss and acquisition of effector functions, is observed under lymphopenic/inflammatory conditions.
Conclusions:
- Treg are not a uniformly stable lineage.
- Treg instability, particularly in the intestine, may contribute to uncontrolled inflammation.
- Further research is needed to elucidate the mechanisms and consequences of Treg plasticity.
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