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LYL1 facilitates AETFC assembly and gene activation by recruiting CARM1 in t(8 21) AML [CHIP-seq]

ABSTRACT: LYL1 facilitates AETFC assembly and gene activation by recruiting CARM1 in t(8 21) AML [CHIP-seq]

PROVIDER: PRJNA854207 | ENA |

REPOSITORIES: ENA

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LYL1 facilitates AETFC assembly and gene activation by recruiting CARM1 in t(8;21) AML [RNA-seq]

Project description:Transcription factors (TFs) play critical roles in hematopoiesis, and their aberrant expression can lead to various types of leukemia. The t(8;21) leukemogenic fusion protein AML1-ETO (AE) is the most common fusion protein in acute myeloid leukemia and can enhance hematopoietic stem cell renewal while blocking differentiation. A key question in understanding AE-mediated leukemia is what determines the choice of AE to activate self-renewal genes or repress differentiation genes. Toward the resolution of this problem, we earlier showed that AE resides in the stable AETFC complex and that its components co-localize on up- or down-regulated target genes and are essential for leukemogenesis. In the current study, using biochemical and genomic approaches, we show that AE-containing complexes are heterogeneous, and that assembly of the larger AETFC (containing AE, HEB, E2A, LYL1, LMO2 and LDB2) requires LYL1. Furthermore, we provide strong evidence that the LYL1-containing AETFC preferentially binds to active enhancers and promotes AE-dependent gene activation. Moreover, we show that coactivator CARM1 interacts with AETFC and facilitates gene activation by AETFC. Collectively, this study describes a novel role of oncoprotein LYL1 in AETFC assembly and gene activation by recruiting CARM1 to chromatin for AML cell survival.

2022-11-10 | GSE207233 | GEO

LYL1 facilitates AETFC assembly and gene activation by recruiting CARM1 in t(8;21) AML [CHIP-seq]

2022-11-10 | GSE207232 | GEO

LYL1 facilitates AETFC assembly and gene activation by recruiting CARM1 in t(8 21) AML.

Project description:LYL1 facilitates AETFC assembly and gene activation by recruiting CARM1 in t(8 21) AML.

| PRJNA854203 | ENA

LYL1 facilitates AETFC assembly and gene activation by recruiting CARM1 in t(8 21) AML [RNA-seq]

Project description:LYL1 facilitates AETFC assembly and gene activation by recruiting CARM1 in t(8 21) AML [RNA-seq]

| PRJNA854206 | ENA

LYL1 facilitates AETFC assembly and gene activation by recruiting CARM1 in t(8;21) AML.

Project description:Transcription factors (TFs) play critical roles in hematopoiesis, and their aberrant expression can lead to various types of leukemia. The t(8;21) leukemogenic fusion protein AML1-ETO (AE) is the most common fusion protein in acute myeloid leukemia and can enhance hematopoietic stem cell renewal while blocking differentiation. A key question in understanding AE-mediated leukemia is what determines the choice of AE to activate self-renewal genes or repress differentiation genes. Toward the resolution of this problem, we earlier showed that AE resides in the stable AETFC complex and that its components colocalize on up- or down-regulated target genes and are essential for leukemogenesis. In the current study, using biochemical and genomic approaches, we show that AE-containing complexes are heterogeneous, and that assembly of the larger AETFC (containing AE, CBFβ, HEB, E2A, LYL1, LMO2, and LDB1) requires LYL1. Furthermore, we provide strong evidence that the LYL1-containing AETFC preferentially binds to active enhancers and promotes AE-dependent gene activation. Moreover, we show that coactivator CARM1 interacts with AETFC and facilitates gene activation by AETFC. Collectively, this study describes a role of oncoprotein LYL1 in AETFC assembly and gene activation by recruiting CARM1 to chromatin for AML cell survival.

| S-EPMC9586329 | biostudies-literature

Destabilization of AETFC through C/EBPalpha-mediated repression of LYL1 contributes to t(8;21) leukemic cell differentiation

Project description:In t(8;21) leukemic cells, the leukemogenic fusion protein AML1-ETO is stabilized and functions through the AML1-ETO-containing transcription factor complex (AETFC). Destabilization of AETFC thus provides a strategy to target AML1-ETO. In this study, we found that AETFC can be destabilized by a specific mechanism involving a direct repression of the core component LYL1 by C/EBPalpha at transcriptional level. We performed a ChIP-seq analysis of the genome-wide occupancy of C/EBPalpha and identifeid a -1 kb C/EBPalpha-binding site in the LYL1 locus that mediate this repression. As LYL1 acts as a linker between the AML1-ETO-E and LMO2-LDB1 parts of AETFC, depletion of LYL1 causes a destabilization of AETFC, which increases susceptibility of the leukemic cells to differentiation. Our results have provided a novel mechanism by which C/EBPalpha can directly destabilize AETFC, and have identified LYL1 as a new therapeutic target for treatment of t(8;21) leukemia.

2019-02-19 | GSE114642 | GEO

LYL1 facilitates AETFC assembly and gene activation by recruiting CARM1 in t(8;21) AML.

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

2022-11-10 | GSE207234 | GEO

Destabilization of AETFC through C/EBPalpha-mediated repression of LYL1 contributes to t(8 21) leukemic cell differentiation

Project description:Destabilization of AETFC through C/EBPalpha-mediated repression of LYL1 contributes to t(8 21) leukemic cell differentiation

| PRJNA472044 | ENA

CARM1 substrate identification

Project description:The goal of the project was global identification of CARM1 substrates. Arginine methylation landscapes were profiled and compared in wild type and CARM1 knockout cells to determine in vivo substrates of CARM1.

2017-07-03 | PXD005871 | Pride

Gene expression profiles of CARM1 overexpression in MCF7

Project description:The goal of this study is to identify ERalpha-target genes affected by overexpression of the histone arginine methyltransferase CARM1 in breast cancer cells. The roles of CARM1 in ERalpha+ breast cancer was not well characterized. Therefore, we created a Dox inducible CARM1 overexpressing MCF7 cell line where CARM1 is overexpressed by 2 fold to determine the created a Dox-inducible CARM1 overexpressing MCF7 cells for evaluation of the global effects of CARM1 on Eralpha-target gene expression. MCF7-tet-on-CARM1 clone 13 were treated under 4 conditions: DMSO; Dox; E2 (10nM); Dox+E2. In Dox+E2 condition, cells were pre-treated with Dox for 5 days before treating with E2 for 4 hours. 3 biological replicates were included and total of 12 samples were analyzed.

2011-06-01 | E-GEOD-26454 | biostudies-arrayexpress

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