Blimp-1 and c-Maf regulate immune gene networks to protect against distinct pathways of pathobiont-induced colitis.

ABSTRACT: Intestinal immune responses to microbes are controlled by the cytokine IL-10 to avoid immune pathology. Here, we use single-cell RNA sequencing of colon lamina propria leukocytes (LPLs) along with RNA-seq and ATAC-seq of purified CD4⁺ T cells to show that the transcription factors Blimp-1 (encoded by Prdm1) and c-Maf co-dominantly regulate Il10 while negatively regulating proinflammatory cytokines in effector T cells. Double-deficient Prdm1^fl/flMaf^fl/flCd4^Cre mice infected with Helicobacter hepaticus developed severe colitis with an increase in T_H1/NK/ILC1 effector genes in LPLs, while Prdm1^fl/flCd4^Cre and Maf^fl/flCd4^Cre mice exhibited moderate pathology and a less-marked type 1 effector resp

SUBMITTER: Alvarez-Martinez M 

PROVIDER: S-EPMC11065689 | biostudies-literature | 2024 May

REPOSITORIES: biostudies-literature