BRD4-PRC2 Represses Transcription of T-helper 2-Specific Negative Regulators during T-cell Differentiation

ABSTRACT: BRD4 is a well-recognized transcriptional activator, but how it regulates gene transcriptional repression in a cell-type specific manner has remained elusive. In this study, we report that BRD4 works with Polycomb repressive complex 2 (PRC2) to repress transcriptional expression of the T-helper 2 (Th2)-negative regulators Foxp3 and E3-ubiqutin ligase Fbxw7 during lineage-specific differentiation of Th2 cells from mouse primary naïve CD4+ T cells. Brd4 binds to the lysine-acetylated-EED subunit of the PRC2 complex via its second bromodomain (BD2) to facilitate histone H3 lysine 27 trimethylation (H3K27me3) at target gene loci and thereby transcriptional repression. We found that Foxp3 represses transcription of Th2-specific transcription factor Gata3, while Fbxw7 promotes its ubiquitination

SUBMITTER: Dr. Li Zhao 

PROVIDER: S-SCDT-10_15252-EMBJ_2022111473 | biostudies-other |

REPOSITORIES: biostudies-other