Project description:Rag1 and Rag2 gene expression in CD4+CD8+ double positive (DP) thymocytes depends on the activity of a distant anti-silencer element (ASE) that counteracts the activity of an intergenic silencer. However, the mechanistic basis for ASE activity is unknown. Here we show that the ASE physically interacts with the distant Rag1 and Rag2 gene promoters in DP thymocytes, bringing the two promoters together to form an active chromatin hub. Moreover, we show that the ASE functions as a classical enhancer that can potently activate these promoters in the absence of the silencer or other locus elements. In thymocytes lacking the chromatin organizer SATB1, we identified a partial defect in Tcra gene rearrangement that was associated with reduced expression of Rag1 and Rag2 at the DP stage. SATB1 binds to the ASE and Rag promoters, facilitating inclusion of Rag2 in the chromatin hub and the loading of RNA polymerase II to both the Rag1 and Rag2 promoters. Our results provide a novel framework for understanding ASE function and demonstrate a novel role for SATB1 as a regulator of Rag locus organization and gene expression in DP thymocytes. Sequencing of Satb1-ChIP and input control from 6 wk old thymus

2015-02-25 | E-GEOD-66248 | biostudies-arrayexpress

Mouse SINE B2 elements function as IFN-inducible enhancer elements

Project description:Mouse SINE B2 elements function as IFN-inducible enhancer elements

| PRJNA836589 | ENA

Identification of candidate enhancer elements in unstimulated and stimulated dendritic cells and fibroblasts

2012-11-19 | GSE32380 | GEO

Expression of candidate genes in Celiac Disease - Associated genes and regulatory elements (part 1)

Project description:Celiac disease is a chronic immune-mediated disorder with an important genetic component. We analyzed the expression of candidate genes and regulatory elements in biopsies from duodenum.

2018-09-28 | GSE87457 | GEO

Identification of candidate enhancer elements in unstimulated and stimulated dendritic cells and fibroblasts

Project description:To identify candidate enhancer elements we analyzed the distribution of two histone modifications associated with enhancers - H3K4me1 and H3K27ac - and one histone modification associated with active transcription - H4 acetylation. ChIP-seq for H3K4me1, H3K27ac and H4ac, and input DNA controls, from 2 cell types (DCs & fibroblasts) under 2 conditions (unstimulated & stimulated)

2012-11-19 | E-GEOD-32380 | biostudies-arrayexpress

Mouse SINE B2 elements function as IFN-inducible enhancer elements [CUT&Tag]

Project description:Mouse SINE B2 elements function as IFN-inducible enhancer elements [CUT&Tag]

| PRJNA836594 | ENA