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E-GEOD-53896

ABSTRACT: Pre-BCR Signaling induce IgK Locus Accessibility by functional redistribution of Enhancer-mediated chromatin Interactions

OTHER RELATED OMICS DATASETS IN: PRJNA236232

PROVIDER: E-GEOD-53896 | ExpressionAtlas | 2015-07-31

REPOSITORIES: ExpressionAtlas

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			Action	DRS
	E-GEOD-53896-analysis-methods.tsv	Tabular
	E-GEOD-53896-atlasExperimentSummary.Rdata	Rdata
	E-GEOD-53896-configuration.xml	Xml
	E-GEOD-53896-percentile-ranks.tsv	Tabular
	E-GEOD-53896.condensed-sdrf.tsv	Tabular

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Similar Datasets

Mus musculus

Project description:Pre-BCR Signaling induce IgK Locus Accessibility by functional redistribution of Enhancer-mediated chromatin Interactions

| PRJNA236232 | ENA

Pre-BCR Signaling induce IgK Locus Accessibility by functional redistribution of Enhancer-mediated chromatin Interactions

Project description:During B cell development the precursor B cell receptor (pre-BCR) checkpoint is thought to increase immunoglobulin k light chain (Igk) locus accessibility to the V(D)J recombinase. Accordingly, pre-B cells lacking the pre-BCR signaling molecules Btk or Slp65 showed reduced germline Vk transcription. To investigate whether pre-BCR signaling modulates Vk accessibility through enhancer-mediated Igk locus topology, we performed chromosome conformation capture and sequencing analyses. These revealed that already in pro-B cells the k enhancers robustly interact with the ~3.2 Mb Vk region and its flanking sequences. Analyses in wild-type, Btk and Slp65 single and double-deficient pre-B cells demonstrated that pre-BCR signaling reduces interactions of both enhancers with Igk locus flanking sequences and increases interactions of the 3â??k enhancer with Vk genes. Remarkably, pre-BCR signaling does not significantly affect interactions between the intronic enhancer and Vk genes, which are already robust in pro-B cells. Both enhancers interact most frequently with highly used Vk genes, which are often marked by transcription factor E2a. We conclude that the k enhancers interact with the Vk region already in pro-B cells and that pre-BCR signaling induces accessibility through a functional redistribution of long-range chromatin interactions within the Vk region, whereby the two enhancers play distinct roles. We performed genome-wide expression profiling of FACS-purified B220+CD19+ pre-B cell fractions from wild-type (WT), Btk and Slp65 single and double deficient VH81x transgenic Rag1-/- mice (n=4 of each genotype). In these experiments non-VH81x transgenic Rag1-/- pro-B cells served as controls (n=3).

2014-03-21 | E-GEOD-53896 | biostudies-arrayexpress

Pre-BCR Signaling induce IgK Locus Accessibility by functional redistribution of Enhancer-mediated chromatin Interactions

Project description:During B cell development the precursor B cell receptor (pre-BCR) checkpoint is thought to increase immunoglobulin k light chain (Igk) locus accessibility to the V(D)J recombinase. Accordingly, pre-B cells lacking the pre-BCR signaling molecules Btk or Slp65 showed reduced germline Vk transcription. To investigate whether pre-BCR signaling modulates Vk accessibility through enhancer-mediated Igk locus topology, we performed chromosome conformation capture and sequencing analyses. These revealed that already in pro-B cells the k enhancers robustly interact with the ~3.2 Mb Vk region and its flanking sequences. Analyses in wild-type, Btk and Slp65 single and double-deficient pre-B cells demonstrated that pre-BCR signaling reduces interactions of both enhancers with Igk locus flanking sequences and increases interactions of the 3’k enhancer with Vk genes. Remarkably, pre-BCR signaling does not significantly affect interactions between the intronic enhancer and Vk genes, which are already robust in pro-B cells. Both enhancers interact most frequently with highly used Vk genes, which are often marked by transcription factor E2a. We conclude that the k enhancers interact with the Vk region already in pro-B cells and that pre-BCR signaling induces accessibility through a functional redistribution of long-range chromatin interactions within the Vk region, whereby the two enhancers play distinct roles.

2014-03-21 | GSE53896 | GEO

Mus musculus strain:C57BL/6

Project description:Pre-B Cell Receptor Signaling Induces Immunoglobulin Kappa Locus Accessibility by Functional Redistribution of Enhancer-mediated Chromatin Interactions

| PRJNA226025 | ENA

Expression data from human NHL cell lines treated with agonistic antibodies

Project description:CD20 is a clinically validated target for Non-Hodgkin’s lymphomas and autoimmune diseases. Interactions of CD20 with the B cell receptor (BCR) and components of the BCR signaling cascade have been reported. In this study we show that antibodies against CD20 or activation of the BCR by specific antibodies induce very similar expression patterns of up- or down-regulated genes in NHL cell lines indicating that CD20 may play a role in BCR signaling and vice versa. We used microarray data to show that antibodies against CD20 or activation of the BCR by specific antibodies induce very similar expression patterns of up- or down-regulated genes in NHL cell lines indicating that CD20 may play a role in BCR signaling and vice versa. Four different cell lines were treated with various antibodies for 4h (3 replicates per treatment), all in all 96 arrays were analysed for 32 samples. Changes were calculated relative to control/reference experiments. Expression patterns of each treatment were compared to determine overlaps.

2013-07-23 | E-GEOD-23394 | biostudies-arrayexpress

Expression data from human NHL cell lines treated with agonistic antibodies

2013-07-23 | GSE23394 | GEO

Gene expression data of BCR-ABL1 transformed B cell precursors from BCL6 wild-type and BCL6 knockout mice

2010-05-10 | GSE20987 | GEO

Gene expression data of BCR-ABL1 transformed B cell precursors from Dusp6 wild-type and Dusp6 knockout mice

Project description:To elucidate the mechanism of Dusp6-mediated pre-B cell survival signaling, we investigated the gene expression pattern in BCR-ABL1-transformed Dusp6+/+ and Dusp6-/- B cell precursors. BCR-ABL1 transformed B cell precursors of Dusp6 wildtype and Dusp6 knockout mice were subjected to RNA isolation

2013-06-03 | E-GEOD-34832 | biostudies-arrayexpress

Gene expression data of BCR-ABL1 transformed B cell precursors from ETV5 wild-type and ETV5 knockout mice

Project description:To elucidate the mechanism of ETV5-mediated pre-B cell survival signaling, we investigated the gene expression pattern in BCR-ABL1-transformed ETV5+/+ and ETV5-/- B cell precursors. BCR-ABL1 transformed B cell precursors of ETV5wild-type and ETV5 knockout mice were subjected to RNA isolation

2013-06-03 | E-GEOD-34833 | biostudies-arrayexpress

Gene expression data of BCR-ABL1 transformed B cell precursors from BCL6 wild-type and BCL6 knockout mice

Project description:To elucidate the mechanism of BCL6-mediated pre-B cell survival signaling, we investigated the gene expression pattern in BCR-ABL1-transformed BCL6+/+ and BCL6-/- B cell precursors. Pharmacological inhibition of BCR-ABL1 was performed with the BCR-ABL1 kinase inhibitor STI571 (Imatinib). BCR-ABL1 transformed B cell precursors of BCL6 wildtype and BCL6 knockout mice were either treated with 10ÂµM STI571 (Imatinib) for 16 hours or cultured in absence of STI571. Three samples for each condition were processed.

2010-05-27 | E-GEOD-20987 | biostudies-arrayexpress

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