Genomics

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Treg Cell TGF-β1 Regulates Distinct Checkpoints Governing Allergy and Autoimmunity


ABSTRACT: The mechanisms by which regulatory T (Treg) cells differentially control allergic and autoimmune responses remain unclear. We show that Treg cells in food allergy (FA) have decreased expression of transforming growth factor beta 1 (TGF-b1) due to IL-4 and STAT6-dependent inhibition of Tgfb1 transcription. These changes were modelled by Treg cell-specific Tgfb1 monoallelic inactivation, which induced allergic dysregulation by impairing microbiota-dependent ROR-gt+ Treg cell differentiation. This dysregulation was rescued by treatment with Clostridiales species, which upregulated Tgfb1 expression in Treg cells. Biallelic deficiency precipitated fatal autoimmunity, with intense autoantibody production and dysregulated T follicular helper and B cell responses. These results identify a privileged role for Treg cell-derived TGF-b1 in regulating allergy and autoimmunity at distinct checkpoints in a Tgfb1 gene dose and microbiota-dependent manner.

ORGANISM(S): Mus musculus

PROVIDER: GSE158804 | GEO | 2021/01/01

REPOSITORIES: GEO

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