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Mouse Naïve CD4+ T Cell Isolation and In vitro Differentiation into T Cell Subsets
Published on: April 16, 2015
Regulatory T cell-derived interleukin-10 limits inflammation at environmental interfaces
Yuri P Rubtsov1, Jeffrey P Rasmussen, Emil Y Chi
1Department of Immunology, University of Washington School of Medicine, Seattle, WA 98195, USA.
Immunity
|April 5, 2008
Summary
Regulatory T (Treg) cells use multiple, non-redundant mechanisms to suppress immune responses. Interleukin-10 (IL-10) produced by Treg cells is crucial for controlling inflammation at specific sites like the colon and lungs.
Area of Science:
- Immunology
- Cellular Biology
- Molecular Biology
Background:
- Regulatory T (Treg) cells, defined by Foxp3 expression, are critical for immune homeostasis.
- The precise mechanisms of Treg cell-mediated suppression in vivo and their potential redundancy remain incompletely understood.
Purpose of the Study:
- To investigate the role of the immunomodulatory cytokine IL-10 in Treg cell-mediated suppression.
- To determine if IL-10 production by Treg cells is essential for controlling systemic autoimmunity and inflammation at environmental interfaces.
Main Methods:
- Utilized genetically engineered mice with conditional ablation of IL-10 specifically in Treg cells via Cre-lox system targeting the Foxp3 locus.
- Analyzed immune responses in various tissues, including systemic compartments, colon, and lungs, to assess the impact of IL-10 deficiency in Treg cells.
Main Results:
- IL-10 production by Treg cells was dispensable for controlling systemic autoimmunity.
- However, IL-10 from Treg cells proved essential for suppressing immune responses at mucosal surfaces, specifically in the colon and lungs.
- These findings indicate tissue-specific roles for IL-10 in Treg cell function.
Conclusions:
- Treg cells employ diverse and non-redundant mechanisms to regulate immune responses.
- IL-10 represents a key, non-redundant suppressor mechanism utilized by Treg cells at specific inflammatory sites.
- This highlights the context-dependent nature of Treg cell suppressive functions.
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