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IgH 3'RR mutant mice

ABSTRACT: IgH 3'RR mutant mice

PROVIDER: PRJEB59246 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	ERR11593000_1.fastq.gz	Fastqsanger.gz
	ERR11593000_2.fastq.gz	Fastqsanger.gz
	ERR11593001_1.fastq.gz	Fastqsanger.gz
	ERR11593001_2.fastq.gz	Fastqsanger.gz
	ERR11593002_1.fastq.gz	Fastqsanger.gz

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HDAC inhibitors and IgH locus transcription. Mini 3'RR and IgH locus transcription

Project description:Numerous B-cell lymphomas feature translocations linking oncogenes with the IgH locus and epigenetic drugs such as histone deacetylase inhibitors (HDACi) have been approved to treat some of them. In this study we investigated IgH locus transcription in B-cell splenocytes stimulated with LPS and the HDACi SAHA. B-cell development is spatially and temporally regulated with the 3'RR enhancer of the IgH locus as a conductor. 3'RR is composed of 4 enhancer elements with a palindromic structure of great significance. We investigated the role of this palindrome with KOKI mice where the 30Kb structure of the 3'RR has been deleted of its palindromic structure.

2021-03-27 | GSE169690 | GEO

SmallRNA-SEQ of mutants B cell for IgH 3'RR and Emu

Project description:SmallRNA-SEQ of mutants B cell for IgH 3'RR and Emu

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RNA-SEQ of mutants B cell for IgH 3'RR and Emu

Project description:RNA-SEQ of mutants B cell for IgH 3'RR and Emu

2017-06-13 | GSE90758 | GEO

Transcriptoma analysis of B splenocytes of 3'RR-deficient mice and wt mice

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Transcriptoma analysis of B splenocytes of 3'RR-deficient mice and wt mice

Project description:The IgH 3' regulatory region (3'RR) controls class switch recombination and somatic hypermutation in mice. Similar numbers of B cells are found in spleen of 3'RR-deficient mice and wt mice. We compare their transcriptoma in order to find differences in their maturation status. B splenocytes from four wt mice and four 3'RR-deficient mice are investigated. Splenic B cells are purified with anti-B220-coupled beads.

2014-01-15 | E-GEOD-45230 | biostudies-arrayexpress

HDAC inhibitors and IgH locus transcription. Mini 3'RR and IgH locus transcription

Project description:HDAC inhibitors and IgH locus transcription. Mini 3'RR and IgH locus transcription

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The Chromatin Reader ZMYND8 Regulates Igh Enhancers to Promote Immunoglobulin Class Switch Recombination

Project description:Class Switch Recombination (CSR) is a DNA recombination reaction that diversifies the effector component of antibody responses. CSR is initiated by activation-induced cytidine deaminase (AID), which targets transcriptionally active immunoglobulin heavy chain (Igh) switch donor and acceptor DNA. The 3’ Igh super-enhancer, 3’ Regulatory Region (3’RR), is essential for acceptor region transcription, but how this function is regulated is unknown. Here we identify the chromatin reader ZMYND8 as an essential regulator of the 3’RR and CSR. In B cells, ZMYND8 binds promoters and super-enhancers, including the 3’RR, and controls its activity by modulating the enhancer transcriptional status. In its absence, there is increased 3’RR polymerase loading, and decreased acceptor region transcription and CSR. In addition to CSR, ZMYND8 deficiency impairs somatic hypermutation (SHM) of Igh, which is also dependent on the 3’RR. Thus ZMYND8 controls Igh diversification in mature B lymphocytes by regulating the activity of the 3’ Igh super-enhancer.

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RNA-SEQ on resting (R) and stimulated (S) B cells from several IgH 3'RR mutant models

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c-myc-3'RR/p53+/- mice lymphomas

Project description:c-myc-3'RR mice prone to develop Burkitt lymphoma (BL) were crossed with p53+/- mice in order to obtain c-myc-3'RR/p53+/- mice. These mice develop a wider spectrum of lymphoma including BL, mantle cell lymphoma (MCL) and plasma cell lymphoma (PCL). Transcriptoma analysis of these lymphomas is investigated in these arrays.

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Transcriptoma comparison of mantle cell lymphoma of c-myc-3'RR/Cdk4R24C mice and c-myc-3'RR/p53+/- mice

Project description:Mantle cell lymphoma (MCL) is a B cell malignancy characterized by a monoclonal proliferation of lymphocytes with co-expression of CD5, CD43 but not CD23. We have developed two murine models of MCL-like lymphoma. Breeding Cdk4R24C mice (a knock-in strain that express a Cdk4 protein resistant to inhibition by p16INK4a and other INK4 family members) with c-myc-3’RR transgenic mice (prone to develop aggressive Burkitt lymphoma-like lymphoma) leads in c-myc/Cdk4R24C mice to development of clonal blastoid MCL-like lymphoma. Breeding p53+/- mice with c-myc-3’RR transgenic mice lead to the development of several mature B cell lymphomas including MCL. In this study we compare MCL transcriptomas of c-myc-3'RR/Cdk4R24C mice and c-myc-3'RR/p53+/- mice.

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