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Histone lysine demethylase 4 family proteins maintain the transcriptional program and adrenergic cellular state of MYCN-amplified neuroblastoma

ABSTRACT: Histone lysine demethylase 4 family proteins maintain the transcriptional program and adrenergic cellular state of MYCN-amplified neuroblastoma

PROVIDER: PRJNA1003934 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR25591121_1.fastq.gz	Fastqsanger.gz
	SRR25591121_2.fastq.gz	Fastqsanger.gz
	SRR25591122_1.fastq.gz	Fastqsanger.gz
	SRR25591122_2.fastq.gz	Fastqsanger.gz
	SRR25591123_1.fastq.gz	Fastqsanger.gz

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Histone lysine demethylase 4 family proteins maintain the transcriptional program and adrenergic cellular state of MYCN-amplified neuroblastoma [RNA-seq]

Project description:Neuroblastoma with MYCN amplification (MNA) is a high-risk disease that requires long-term intensive multimodal therapies. Less than 50% survival rate of high-risk patients has prompted active and extensive studies to seek more effective therapies against MNA neuroblastomas but with few successes. We show that MYCN transdifferentiates the neuroblastoma cells from mesenchymal state to adrenergic state accompanied with induction of histone lysine demethylase 4 family members (KDM4A-C), all of which act in concert to control the expression of MYCN and adrenergic core regulatory transcription factors (CRC TF). Pharmacologic inhibition of KDM4 blocks expression of MYCN and adrenergic CRC transcriptome with genome-wide induction of transcriptionally repressive H3K9me3, resulting in potent anticancer activity against MNA neuroblastomas by inducing differentiation, apoptosis and type I interferon response. KDM4 inhibition in combination with chemotherapy leads to complete tumor response of MNA xenografts, without overt toxicity in animals. Thus, KDM4 blockade may be a transformative strategy to target the dependency of adrenergic CRC TFs in MNA neuroblastomas.

2024-03-04 | GSE240505 | GEO

Histone lysine demethylase 4 family proteins maintain the transcriptional program and adrenergic cellular state of MYCN-amplified neuroblastoma [ATAC-seq]

Project description:Neuroblastoma with MYCN amplification (MNA) is a high-risk disease that requires long-term intensive multimodal therapies. Despite this, high-risk patients have a poor survival rate, which has prompted extensive studies aimed at identifying more effective therapies against neuroblastomas with MNA. Neuroblastoma displays cellular heterogeneity, including more differentiated (adrenergic) and more primitive (mesenchymal) cellular states. Here, we demonstrate that MYCN oncoprotein can promote a cellular state switch in mesenchymal cells to an adrenergic state. This cellular state transition is accompanied by induction of histone lysine demethylase 4 family members (KDM4A-C), which act in concert to control the expression of MYCN and adrenergic core regulatory transcription factors (CRC TF). Pharmacologic inhibition of KDM4 blocks expression of MYCN and the adrenergic CRC transcriptome with genome-wide induction of transcriptionally repressive H3K9me3, resulting in potent anticancer activity against neuroblastomas with MNA by inducing neuroblastic differentiation, apoptosis, and a type I interferon response. Further, KDM4 inhibition in combination with conventional, cytotoxic chemotherapy results in complete tumor responses of xenografts with MNA, without overt toxicity in animals. Thus, KDM4 blockade may be a novel and transformative strategy to target the adrenergic CRC dependencies in MNA neuroblastomas.

2024-03-04 | GSE240504 | GEO

Histone lysine demethylase 4 family proteins maintain the transcriptional program and adrenergic cellular state of MYCN-amplified neuroblastoma

Project description:Histone lysine demethylase 4 family proteins maintain the transcriptional program and adrenergic cellular state of MYCN-amplified neuroblastoma

| PRJNA690781 | ENA

Histone lysine demethylase 4 family proteins maintain the transcriptional program and adrenergic cellular state of MYCN-amplified neuroblastoma [ATAC-seq]

Project description:Histone lysine demethylase 4 family proteins maintain the transcriptional program and adrenergic cellular state of MYCN-amplified neuroblastoma [ATAC-seq]

| PRJNA1003931 | ENA

Histone lysine demethylase 4 family proteins maintain the transcriptional program and adrenergic cellular state of MYCN-amplified neuroblastoma [RNA-seq]

Project description:Histone lysine demethylase 4 family proteins maintain the transcriptional program and adrenergic cellular state of MYCN-amplified neuroblastoma [RNA-seq]

| PRJNA1003939 | ENA

Histone lysine demethylase 4 family proteins maintain the transcriptional program and adrenergic cellular state of MYCN-amplified neuroblastoma.

Project description:Neuroblastoma with MYCN amplification (MNA) is a high-risk disease that has a poor survival rate. Neuroblastoma displays cellular heterogeneity, including more differentiated (adrenergic) and more primitive (mesenchymal) cellular states. Here, we demonstrate that MYCN oncoprotein promotes a cellular state switch in mesenchymal cells to an adrenergic state, accompanied by induction of histone lysine demethylase 4 family members (KDM4A-C) that act in concert to control the expression of MYCN and adrenergic core regulatory circulatory (CRC) transcription factors. Pharmacologic inhibition of KDM4 blocks expression of MYCN and the adrenergic CRC transcriptome with genome-wide induction of transcriptionally repressive H3K9me3, resulting in potent anticancer activity against neuroblastomas with MNA by inducing neuroblastic differentiation and apoptosis. Furthermore, a short-term KDM4 inhibition in combination with conventional, cytotoxic chemotherapy results in complete tumor responses of xenografts with MNA. Thus, KDM4 blockade may serve as a transformative strategy to target the adrenergic CRC dependencies in MNA neuroblastomas.

| S-EPMC10983111 | biostudies-literature

The Super Elongation Complex Drives Transcriptional Addiction in MYCN-amplified Neuroblastoma

Project description:MYCN amplification in neuroblastoma leads to aberrant expression of MYCN oncoprotein, which binds active genes promoting transcriptional amplification. Yet how MYCN coordinates transcription elongation to meet productive transcriptional amplification and which elongation machinery represents MYCN-driven vulnerability remain to be identified. We conducted a targeted screen of transcription elongation factors and identified the super elongation complex (SEC) as a unique vulnerability in MYCN-amplified neuroblastomas. MYCN directly binds EAF1 and recruits SEC to enhance processive transcription elongation. Depletion of EAF1 or AFF1/AFF4, another core subunit of SEC, leads to a global reduction in transcription elongation and elicits selective apoptosis of MYCN-amplified neuroblastoma cells. A combination screen reveals SEC inhibition synergistically potentiates the therapeutic efficacies of FDA-approved BCL2 antagonist ABT-199, in part due to suppression of MCL1 expression, both in MYCN-amplified neuroblastoma cells and in patient-derived xenografts. These findings identify disruption of the MYCN-SEC regulatory axis as a promising therapeutic strategy in neuroblastoma.

2023-05-10 | PXD039332 | Pride

Neuroblastoma: MYCN normal vs. MYCN amplified

Project description:To evaluate the expression of genes associated with MYCN in NB, 10 tumors with MYCN amplification and 10 with normal MYCN copy number were subjected to oligonucleotide microarray using Agilent oligo microarray chips. Two-condition experiment, MYCN normal vs. MYCN amplified 10 NB patient tissues for each group.

2013-12-17 | E-GEOD-53371 | biostudies-arrayexpress

To identify transcripts that are differentially expressed in the MYCN amplified vs MYCN non-amplified cell lines using Next Generation Sequencing

Project description:The aims of this study are to compare transcripts that are differentially expressed in the MYCN amplified compare to the MYCN non-amplified neuroblastoma cell lines, in particular, long non-coding RNAs. Methods: Ribosomal depleted RNAs from six human neuroblastoma cell lines were subjected to deep sequencing, using Illumina Hiseq. Results: We identified 459 transcripts are differentially expressed betweeen the MYCN amplified and the MYCN non-amplified cell lines. Conclusions: We have identified a novel long noncoding RNA lncNB1 that is highly expressed in the MYCN amplified compared to the MYCN non-amplified cell lines.

2019-10-08 | GSE114053 | GEO

Genome-wide binding of MYCN protein in MYCN-amplified neuroblastoma cell lines

Project description:The MYCN locus is amplified in about half of high-risk neuroblastoma tumors. To identify genomic loci occupied by MYCN protein in the MYCN-amplified neuroblastoma cell lines NGP, Kelly and NB-1643, we performed chromatin immunoprecipitation coupled with Next-Generation Sequencing (ChIP-seq) using an anti-MYCN antibody.

2017-08-02 | GSE94782 | GEO

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