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Condensate-promoting ENL mutation induces tumorigenesis via chromatin remodeling [ChIP-seq and CUT&Tag]

ABSTRACT: Condensate-promoting ENL mutation induces tumorigenesis via chromatin remodeling [ChIP-seq and CUT&Tag]

PROVIDER: PRJNA999348 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR25442644_1.fastq.gz	Fastqsanger.gz
	SRR25442644_2.fastq.gz	Fastqsanger.gz
	SRR25442645_1.fastq.gz	Fastqsanger.gz
	SRR25442645_2.fastq.gz	Fastqsanger.gz
	SRR25442646_1.fastq.gz	Fastqsanger.gz

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Condensate-promoting ENL mutation induces tumorigenesis via chromatin remodeling

Project description:Condensate-promoting ENL mutation induces tumorigenesis via chromatin remodeling

| PRJNA999344 | ENA

Condensate-promoting ENL mutation induces tumorigenesis via chromatin remodeling [ChIP-seq and CUT&Tag]

Project description:Gain-of-function mutations in the chromatin ‘reader’ ENL, identified in AML and Wilms tumor, have been shown to induce aberrant formation of transcriptional condensates in cellular systems. However, the precise role of these mutations and their condensate forming property in tumorigenesis remains unclear. By creating a conditional knock-in mouse model for the most prevalent ENL mutation, we establish ENL mutant as a bona fide oncogenic driver of acute myeloid leukemia in vivo. Heterozygous expression of ENL mutant perturbs the normal hematopoietic hierarchy and results in the aberrant expansion of myeloid progenitors with increased self-renewal property. Furthermore, the ENL mutant remodels histone modifications to alter differentiation processes and drive oncogenic gene expression during hematopoietic development. Importantly, targeted point mutagenesis to disrupt the condensate formation property completely abolishes ENL mutant’s oncogenic function in hematopoietic stem and progenitor cells (HSPCs). Lastly, short-term treatment with a small molecule inhibitor that blocks the acetyl-binding activity of ENL mutant reverts its impact on chromatin and significantly delays leukemia development in mice. Our studies reveal the crucial biological function of mutation-induced transcriptional condensates in chromatin regulation and cancer in vivo and provide proof-of-concept for targeting of pathogenic condensates as a promising therapy for certain cancers.

2024-04-14 | GSE239468 | GEO

Condensate-promoting ENL mutation induces tumorigenesis via chromatin remodeling [RNA-seq]

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Condensate-promoting ENL mutation induces tumorigenesis via chromatin remodeling [RNA-seq]

Project description:Condensate-promoting ENL mutation induces tumorigenesis via chromatin remodeling [RNA-seq]

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Condensate-promoting ENL mutation induces tumorigenesis via chromatin remodeling

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

2024-04-14 | GSE239470 | GEO

ENL reads histone β-hydroxybutyrylation to modulate gene transcription (CUT&Tag)

Project description:Histone modifications are typically recognized by chromatin-binding protein modules (referred to as “readers”) to mediate fundamental processes such as transcription. Lysine β-hydroxybutyrylation (Kbhb) is a new type of histone mark that couples metabolism to gene expression. However, the readers that prefer histone Kbhb remain elusive. This knowledge gap must be filled in order to reveal the molecular mechanism of this epigenetic regulation. Herein, we developed a chemical proteomic approach, relying upon multivalent photoaffinity probes to capture binders of the mark and identified ENL as a novel target of H3K9bhb. Biochemical studies and CUT&Tag analysis further suggested that ENL favorably binds to H3K9bhb, and co-localizes with it on promoter regions to modulate gene expression. Notably, disrupting the interaction between H3K9bhb and ENL via structure-based mutation leads to the suppressed expression of the gene like MYC that drives cell proliferation.

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ENL reads histone β-hydroxybutyrylation to modulate gene transcription (CUT&Tag)

Project description:ENL reads histone β-hydroxybutyrylation to modulate gene transcription (CUT&Tag)

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Transcriptomic profiling of MLL-ENL and delta YEATS mutant

Project description:To investigate the contribution of ENL YEATS domain and downstream sequences in MLL-ENL leukemogenesis program, we generated MLL-ENL and MLL-ENL ∆YEATS (ENL aa372-559) cell lines by retrovirally introducing these constructs into lineage negative hematopoietic stem and progenitor cells (HSPCs).

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Transcription profiling of human peripheral lymphocytes after exposure to cigarette smoke condensate in vitro

Project description:Little is known about alteration of the global gene expression by cigarette smoke (CS) and few biomarkers for smoking-related harm are available. We used Affymetrix HG-U133A GeneChips to measure the transcriptomes in eight cultured lymphocyte samples exposed to cigarette smoke condensate (CSC) in vitro . The in vitro exposure of lymphocytes to CSC significantly changed expression levels of 2,266 genes many of which biologically interacted. They included genes encoding for xenobiotic metabolism and oxidative stress-response (e.g. Nrf2 and AhR signaling pathways), inflammation/immune response (e.g. cytokines), apoptosis, cell cycle and tumorigenesis. However, the magnitude of expression responses for some genes showed high inter-individual variability. Experiment Overall Design: The goals of this study were to evaluate novel gene expression profiles and pathways affected by cigarette smoke condensate (CSC), and to identify potential biomarkers for cigarette smoke exposure and harm. To this end, we isolated the PBMC from eight light smokers, cultured the cells in vitro and exposed them to 2R4F CSC, then determined the gene expression profiles with Affymetrix microarray and analyzed alteration of global gene expression after exposure to CSC.

2009-09-15 | E-GEOD-12586 | biostudies-arrayexpress

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