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Transcription profiling of mouse embryos at 8.5 and 12 days to study the effect of knocking out RUNX1 (a.k.a. AML1) gene

ABSTRACT: Series of samples studying effect of knocking out RUNX1 (a.k.a. AML1) in mouse embryos at 8.5 and 12 days. Wildtype and knockout animals at the two time points were generated and all conditions done in duplicate.

ORGANISM(S): Mus musculus

SUBMITTER: Ken Simpson

PROVIDER: E-GEOD-2592 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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RUNX1 (AML1) knockout in mouse embryo

Project description:Series of samples studying effect of knocking out RUNX1 (a.k.a. AML1) in mouse embryos at 8.5 and 12 days. Wildtype and knockout animals at the two time points were generated and all conditions done in duplicate. Keywords: other

2005-12-02 | GSE2592 | GEO

HDAC3 preferentially binds to RUNX1 in t(8;21) AML cells and collaborates with RUNX1 to repress AML1-ETO-mediated transcriptional activation

Project description:Human histone deacetylase 3 (HDAC3) plays an important role in gene transcription in diseased human cells, such as leukemia. The t(8;21) chromosomal translocation is one of the most commonly observed genetic abnormalities associated with acute myeloid leukemia. This translocation generates the AML1-ETO fusion protein between the wild-type RUNX1 transcription factor and wild-type ETO transcriptional corepressor. To better understand the role of HDAC3 in t(8;21) leukemogenesis, the human HDAC3-containing complexes were isolated from stably-transfected HeLa cells by using anti-FLAG immunoprecipitation. The resulting complexes were resolved in SDS-PAGE. The components of the complexes were identified using LC-MS/MS. We report here that the human RUNX1 transcription is a component of the HDAC3 complexes. We demonstrate that HDAC3 and RUNX1 collaboratively repress AML1-ETO-mediated transcription. These results reveal new insight into how AML1-ETO, RUNX1, and HDAC3 crosstalk to deregulate gene transcription in t(8;21) leukemia cells.

2020-02-17 | PXD017230 | Pride

Epigenetic regulation of the apoptosis program in t(8;21) AMLs by an AML1-ETO, ERG and RUNX1 triad

Project description:The t(8;21) acute myeloid leukemia associated oncoprotein AML1-ETO is a transcription factor that aberrantly regulates the pathways that lead to myeloid differentiation. Here, we set out to investigate the effects of AML1-ETO on gene expression and the epigenome in patient blast cells. We identify two modules, one in which AML1-ETO binds promoter regions of active genes and one represented by non-promoter binding to accessible, yet inactive chromatin regions. Using genome-wide binding analysis and mass spectrometry interaction studies we identify ERG, FLI1, TAL1 and RUNX1 as common binding factors of all AML1-ETO occupied genomic regions, while LYL1 and LMO2 show preferential binding in the context of non promoter regions. Epigenetically, reduced histone acetylation levels at non-promoter regions seems HDAC dependent, as treatment with an HDACi increases acetylation and induces cell death. Both AML1-ETO modules are represented in most aberrantly regulated pathways, including many signaling pathways, self-renewal and apoptosis. For the latter, the expression of the wild type transcription factors RUNX1 and ERG is required, as alterations in expression are associated with the onset of an apoptosis program. Interestingly, upon RUNX1 or ERG knockdown this onset seems to be dependent on increased AML1-ETO expression as combinatorial knockdown of RUNX1/AML1-ETO or ERG/AML1-ETO results in rescue from apoptosis. Together our results show that the balanced interplay of the epigenetic environment and transcription factors retains an anti apoptotic phenotype in t(8;21) AML cells.

2016-11-15 | GSE76464 | GEO

TEL-AML1 (ETV6-RUNX1) in B-cells and leukemia

Project description:TEL-AML1 (ETV6-RUNX1) in B-cells and leukemia

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CD4+ T cells gene-transduced with AML1, wild type Foxp3, and a Foxp3 mutant defective in binding to AML1

Project description:To clarify how Foxp3 regulates its target genes, we performed co-immunoprecipitation experiments and found that Foxp3 physically bound to AML1/Runx1 (Ono, M. et al, Nature, 2007). In this series of study, we compared gene regulations by AML1, wild type Foxp3, and a Foxp3 mutant with defective binding to AML1. Keywords: Retroviral gene-transduction into primary CD4+ T cells

2007-08-01 | GSE6939 | GEO

Addiction of t(8;21) and inv(16) AML to native RUNX1 [Gene Expression data]

Project description:Cancer cells maintain a sensitive balance between growth-promoting oncogenes and apoptosis inhibitors. We show that WT RUNX1 is required for survival of t(8;21)-Kasumi-1 and inv(16)-ME-1 AML cell lines. The malignant AML phenotype is sustained by a delicate AML1-ETO/RUNX1 balance that involves competition for common DNA binding sites regulating a subset of AML1-ETO/RUNX1 targets. Genome expression was profiled after performing knockdown of RUNX1 and AML1-ETO in Kasumi-1 cells using specific siRNA-oligo nucleotides, and analyzed using Affymetrix Gene 1.0 ST arrays.

2013-08-18 | E-GEOD-45743 | biostudies-arrayexpress

Addiction of t(8;21) and inv(16) AML to native RUNX1 [ChIP-Seq data]

Project description:Cancer cells maintain a sensitive balance between growth-promoting oncogenes and apoptosis inhibitors. We show that WT RUNX1 is required for survival of t(8;21)-Kasumi-1 and inv(16)-ME-1 AML cell lines. The malignant AML phenotype is sustained by a delicate AML1-ETO/RUNX1 balance that involves competition for common DNA binding sites regulating a subset of AML1-ETO/RUNX1 targets. Genomewide sequencing data is included herein: Transcription factors RUNX1 c-terminus and n-terminus which is shared with AML1-ETO were profiled independently), AML1-ETO and AP4 were profiled using ChIP-Seq in Kasumi-1 cells, as well as control ChIP-Seq experiments of non immune serum. Two replicates were performed for each transcription factor profiling and control experiment.

2013-08-18 | E-GEOD-45738 | biostudies-arrayexpress

Addiction of t(8;21) and inv(16) AML to native RUNX1 [Gene Expression data]

2013-08-18 | GSE45743 | GEO

Addiction of t(8;21) and inv(16) AML to native RUNX1 [ChIP-Seq data]

2013-08-18 | GSE45738 | GEO

TEL-AML1 (ETV6-RUNX1) in B-cells and leukemia (part 4)

Project description:We identified directly and indirectly regulated target genes utilizing an inducible TEL-AML1 system derived from the murine pro B-cell line BA/F3 and a monoclonal antibody directed against TEL-AML1. By integration of promoter binding identified with ChIP-on-chip, gene expression and protein output through microarray technology and stable labelling of amino acids in cell culture (SILAC), we identified directly and indirectly regulated targets of the TEL-AML1 fusion protein.

2013-11-04 | GSE50733 | GEO

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