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Chromatin binding of RUNX1 in T-cell acute lymphoblastic leukemia (T-ALL) cells with depletion cBAF complex [ChIP-seq]

ABSTRACT: Using ChIP-seq of RUNX1 in the cells with cBAF-targeting gRNA, we identified RUNX1 binding chromain loci which is regulated by cBAF complex

ORGANISM(S): Homo sapiens

PROVIDER: GSE243007 | GEO | 2023/11/04

REPOSITORIES: GEO

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Chromatin accessibility of T-cell acute lymphoblastic leukemia (T-ALL) cells with depletion or inhbiiton of cBAF complex [ATAC-seq]

Project description:Using ATAC-seq of the cells with cBAF-targeting gRNA or inhibitor, we identified chromatin loci whose accessibility was regulated by cBAF complex

2023-11-04 | GSE227273 | GEO

Expression profiles of T-cell acute lymphoblastic leukemia (T-ALL) cell lines with depletion or inhbiiton of cBAF complex [RNA-seq]

Project description:From comparative transcriptome analysis using RNA-seq of the cells with cBAF-targeting gRNA or inhibitor, we identified the genes regulated by cBAF complex in T-ALL cell lines

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RUNX1 colludes with NOTCH1 to reprogram chromatin in T-cell acute lymphoblastic leukemia

Project description:Runt-related transcription factor 1 (RUNX1) is oncogenic in diverse types of leukemia and epithelial cancers where its expression is associated with poor prognosis. Current models suggest that RUNX1 cooperates with other oncogenic factors (e.g., NOTCH1, TAL1) to drive the expression of proto-oncogenes in T cell acute lymphoblastic leukemia (T-ALL) but the molecular mechanisms controlled by RUNX1 and its cooperation with other factors remain unclear. Integrative chromatin and transcriptional analysis following inhibition of RUNX1 and NOTCH1 revealed a surprisingly widespread role of RUNX1 in the establishment of global H3K27ac levels and that RUNX1 is required by NOTCH1 for cooperative transcription activation of key NOTCH1 target genes including MYC, DTX1, HES4, IL7R, and NOTCH3. Super-enhancers were preferentially sensitive to RUNX1 knockdown and RUNX1-dependent super-enhancers were disrupted following the treatment of a pan-BET inhibitor, I-BET151.

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The Pkm duet: Coordinating C2C12 myoblast proliferation and differentiation through Histone 3 phosphorylation and cBAF complex dynamics

Project description:Pkm1 and Pkm2 kinases are expressed in differentiating skeletal myoblasts. Knockdown of Pkm1 or Pkm2, therefore, can affect myoblast differentiation, by two independent regulatory mechanisms involving histone phosphorylation and chromatin remodeling complexes. Pkm2 KD in C2C12 cells reduced the chromatin marks of phosphorylated H3-T6, H3-T11 and H3-T45 into several essential myogenic promoters, and consequently, prevented their expression. Also, the transcriptional analysis demonstrated that Pkm2 is required for the expression of the cBAF-specific subunits Dpf2 and Baf250a, which we have previously demonstrated are essential for myogenesis. In contrast, Pkm1 KD alters the localization of nuclear Dpf2 into the cytoplasm as well. Mechanistically, Pkm KD resulted in decreased binding of cBAF components to their myogenic target genes, which also suggested a positive regulation between the cBaf complex and the H3 phosphorylation marks.

2024-05-01 | GSE252751 | GEO

Characterization of cBAF complex in T-cell acute lymphoblastic leukemia (T-ALL)

Project description:This SuperSeries is composed of the SubSeries listed below.

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Project description:Overwhelming evidence indicates that long non-coding RNAs have essential roles in tumorigenesis. Nevertheless, their expression and role in pediatric B-cell precursor acute lymphoblastic leukemia has not been extensively explored. Here, we conducted a comprehensive analysis of the long non-coding RNA transcriptome in ETV6/RUNX1 positive BCP-ALL, one of the most frequent subtypes of pediatric leukemia. An ETV6/RUNX1 expression signature was established, consisting of 596 lncRNAs (434 up and 162 down) using expression analysis of a series of primary patient samples. Subsequently, RNA sequencing from BCP-ALL cell lines and shRNA-mediated silencing of ETV6/RUNX1, illustrated that lnc-NKX2-3-1, lnc-TIMM21-5, lnc-ASTN1-1 and lnc-RTN4R-1 are bona fide ETV6/RUNX1 targets and could serve as novel biomarkers of this prevalent subtype of human leukemia.

2016-09-26 | GSE79869 | GEO

Enhancer recruitment of transcription repressors RUNX1 and TLE3 by mis-expressed FOXC1 blocks differentiation in acute myeloid leukemia

Project description:Despite absent expression in normal hematopoiesis, the Forkhead factor FOXC1, a critical mesenchymal differentiation regulator, is highly expressed in ~30% of HOXAhigh AML to confer blocked monocyte/macrophage differentiation. Through integrated proteomics and bioinformatics, we discovered that FOXC1 and RUNX1 interact through Forkhead and Runt domains respectively and cooccupy primed and active enhancers distributed close to differentiation genes. FOXC1 stabilises association of RUNX1, HDAC1 and Groucho repressor TLE3 to limit enhancer activity: FOXC1 knockdown induced loss of repressor proteins, gain of CEBPA binding, enhancer acetylation and upregulation of nearby genes, including KLF2. Furthermore, it triggered genome-wide redistribution of RUNX1, TLE3 and HDAC1 from enhancers to promoters leading to repression of self-renewal genes including MYC and MYB. Our studies highlight RUNX1 and CEBPA transcription factor swapping as a feature of leukemia cell differentiation, and reveal that FOXC1 prevents this by stabilising enhancer binding of a RUNX1/HDAC1/TLE3 transcription repressor complex, to oncogenic effect.

2021-08-08 | PXD027740 | Pride

Illumina and Affymetrix SNP-array data for 2 ETV6/RUNX1-positive Acute Lymphoblastic Leukemia samples and corresponding normal samples

Project description:This SuperSeries is composed of the following subset Series: GSE25102: Illumina SNP-array data for 2 ETV6/RUNX1-positive Acute Lymphoblastic Leukemia samples and corresponding normal samples GSE25116: Affymetrix SNP-array data for 2 ETV6/RUNX1-positive Acute Lymphoblastic Leukemia samples and corresponding normal samples Refer to individual Series

2012-07-02 | E-GEOD-25117 | biostudies-arrayexpress

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