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Induction of Intestinal Inflammation by Adoptive Transfer of CBir1 TCR Transgenic CD4+ T Cells to Immunodeficient Mice
Published on: December 16, 2021
Zfp362 potentiates murine colonic inflammation by constraining Treg cell function rather than promoting Th17 cell
Susanne Herppich1, Lisa Hoenicke1, Fabian Kern2,3
1Department Experimental Immunology, Helmholtz Centre for Infection Research, Braunschweig, Germany.
Zinc finger protein 362 (Zfp362) constrains regulatory T cell (Treg) function, impacting colonic inflammation. Its absence increases Treg cells, reducing inflammation severity, rather than affecting T helper 17 (Th17) cell differentiation.
Area of Science:
- Immunology
- Molecular Biology
- Cell Biology
Background:
- Mucosal immunity relies on T helper 17 (Th17) and regulatory T (Treg) cells.
- DNA methylation in Th17 cells identified Zinc finger protein 362 (Zfp362) as demethylated.
Purpose of the Study:
- To investigate the role of Zfp362 in Th17 cell biology and its influence on mucosal immunity.
- To understand Zfp362's function in the context of colonic inflammation.
Main Methods:
- Generation and analysis of Zfp362 knockout (Zfp362-/-) mice.
- Flow cytometry to assess T cell populations (Th17 and Treg cells) in various tissues.
- Adoptive transfer experiments using Zfp362-/- and Zfp362+/+ derived T cells into Rag2-/- mice.
Main Results:
- Zfp362 deficiency did not alter Th17 cell differentiation in Zfp362-/- mice.
- Increased frequencies of colonic and mesenteric lymph node Treg cells (Foxp3+, IL-10+, RORγt+) were observed in Zfp362-/- mice.
- Adoptive transfer of Zfp362-/- T cells led to reduced weight loss in recipient mice, associated with increased effector Treg cells.
Conclusions:
- Zfp362 plays a role in promoting colonic inflammation by constraining Treg cell effector function.
- Zfp362's function in inflammation is independent of direct promotion of Th17 cell differentiation.
- Zfp362 acts as a negative regulator of Treg cell-mediated immune suppression in the gut.
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