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Expression data from murine irf4-/- and irf4+/+ mature B cells purified by magnetic cell separation and stimulated with anti-CD40 antibodies and IL-4

ABSTRACT: Gene expression profiling of murine irf4-/- and irf4+/+ splenic B cells identifies genes regulated by the transcription factor IRF4 in CD40+IL-4 activated mature B cells. B cells from 12-week old irf4-/- and irf4+/+ littermate mice were isolated by magnetic depletion of non-B cells from splenic mononuclear cells and cultures with mitogens in vitro. RNA was isolated. Labeled cRNA was hybridized to microarrays and genes specifically expressed in irf4-/- vs. irf4+/+ samples.

ORGANISM(S): Mus musculus

SUBMITTER: Ulf Klein

PROVIDER: E-GEOD-74287 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Expression data from murine irf4-/- and irf4+/+ mature B cells purified by magnetic cell separation and stimulated with anti-CD40 antibodies and IL-4

Project description:Gene expression profiling of murine irf4-/- and irf4+/+ splenic B cells identifies genes regulated by the transcription factor IRF4 in CD40+IL-4 activated mature B cells.

2015-11-01 | GSE74287 | GEO

Expression data from murine irf4-/- and irf4+/+ mature B cells purified by magnetic cell separation

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Transcription profiling by array of mouse irf4 knockout mature splenic B cells against wild type controls from littermates

Project description:Gene expression profiling of murine irf4-/- and irf4+/+ splenic B cells identifies genes regulated by the transcription factor IRF4 in quiescent mature B cells. B cells from 12-week old irf4-/- and irf4+/+ littermate mice were isolated by magnetic depletion of non-B cells from splenic mononuclear cells. RNA was isolated. Labeled cRNA was hybridized to microarrays and genes specifically expressed in irf4-/- vs. irf4+/+ samples.

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A new type of pathogenic transcription factor mutation targeting interferon regulatory factor 4 (IRF4) in human lymphoma

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RNAseq data from in vitro-stimulated (24 hours) murine relfl/flCD19-Cre and CD19-Cre splenic B cells purified by magnetic cell separation.

Project description:RNAseq analysis of CD40 + IgM in vitro-stimulated (24 hours) murine relfl/flCD19-Cre (furtheron designated as REL) and CD19-Cre (furtheron designated as WT) splenic B cells identifies genes regulated by the transcription factor c-REL in activated B cells. Splenic B cells from 12-week old relfl/flCD19-Cre and CD19-Cre littermate mice were isolated by magnetic cell separation from splenic mononuclear cells and stimulated in vitro for 24 hours with anti-CD40 and anti-IgM. RNA was isolated and submitted for RNA-sequencing on an Illumina HiSeq2000 instrument for 30 million single-ended reads.

2014-07-15 | E-GEOD-58973 | biostudies-arrayexpress

RNAseq data from in vitro-stimulated (6 hours) murine relafl/flCD19-Cre and CD19-Cre splenic B cells purified by magnetic cell separation (RELA)

Project description:RNAseq analysis of CD40 + IgM in vitro-stimulated (6 hours) murine relafl/flCD19-Cre (furtheron designated as RELA) and CD19-Cre (furtheron designated as WT) splenic B cells identifies genes regulated by the transcription factor RELA in activated B cells. Splenic B cells from 12-week old relafl/flCD19-Cre and CD19-Cre littermate mice were isolated by magnetic cell separation from splenic mononuclear cells and stimulated in vitro for 6 hours with anti-CD40 and anti-IgM. RNA was isolated and submitted for RNA-sequencing on an Illumina HiSeq2000 instrument for 30 million single-ended reads.

2014-07-15 | E-GEOD-58972 | biostudies-arrayexpress

RNAseq data from in vitro-stimulated (6 hours) murine relfl/flCD19-Cre and CD19-Cre splenic B cells purified by magnetic cell separation (REL6)

Project description:RNAseq analysis of CD40 + IgM in vitro-stimulated (6 hours) murine relfl/flCD19-Cre (furtheron designated as REL) and CD19-Cre (furtheron designated as WT) splenic B cells identifies genes regulated by the transcription factor c-REL in activated B cells. Splenic B cells from 12-week old relfl/flCD19-Cre and CD19-Cre littermate mice were isolated by magnetic cell separation from splenic mononuclear cells and stimulated in vitro for 6 hours with anti-CD40 and anti-IgM. RNA was isolated and submitted for RNA-sequencing on an Illumina HiSeq2000 instrument for 30 million single-ended reads.

2014-07-15 | E-GEOD-58971 | biostudies-arrayexpress

A new type of pathogenic transcription factor mutation targeting interferon regulatory factor 4 (IRF4) in human lymphoma

Project description:We report the characterization of a recurrent somatic mutation c.295T>C (p.C99R) in the Interferon Regulatory Factor 4 (IRF4) gene in human lymphoma in the α3-recognition helix of the IRF4 DNA-binding domain. IRF4-C99R fundamentally alters IRF4 DNA-binding, combining loss-of-binding at canonical IRF motifs and neomorph gain-of-binding at canonical and non-canonical IRF composite elements (CEs). IRF4-C99R thoroughly modifies IRF4 function, blocking IRF4-dependent plasma cell induction, and specifically up-regulating lymphoma-specific genes in a degenerate Activator Protein-1 (AP-1)-IRF-CE (AICE)-dependent manner.

2023-07-21 | E-MTAB-12522 | biostudies-arrayexpress

IRF4, a master transcription factor, regulates genes involved in BCR signaling, antigen processing and presentation, and GC development [expression array]

Project description:Interferon regulatory factor 4 (IRF4) is a master transcription factor required for the maturation of germinal center B cells that eventually develop into antibody secreting plasma cells and memory B cells. IRF4-deficient mice exhibit a profound reduction in serum immunoglobulin levels. In spite of wealth of the information relating to IRF4 and B cell biology, little is known about the intricate molecular details of the role of this transcription factor during B cell development. We therefore examined the genome-wide targets of IRF4 by ChIP-chip analysis in GC derived BL2 Burkittâs lymphoma cells. ChIP studies were further supplemented by whole genome expression analysis after shRNA-mediated knockdown of IRF4. Our study revealed that IRF4 regulates expression of genes important for a) BCR signaling b) antigen processing and presentation by MHC. In addition we found that IRF4 possibly in some way involved to regulate LTA, LTB and CXCR5 those involved in immune system development, particularly light zone development related genes such as FDC clustering regulating and IL21R and IL10 who are involved in B cell development.. On the other hand, IRF4 suppressesd genes in the oxidative phosphorylation pathway. Our findings illuminate hitherto unexplored roles of IRF4 in GC B cell development. BL2 Burkitt's lymphoma-derived B cells were infected with lentivirus expressing shRNA for IRF4 or control, and total RNA was subjected to Illumina BeadsExpression Arrays analysis.

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