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Liaison between SNAI2 and MYOD enhances oncogenesis and suppresses differentiation in Fusion-Negative Rhabdomyosarcoma

ABSTRACT: Liaison between SNAI2 and MYOD enhances oncogenesis and suppresses differentiation in Fusion-Negative Rhabdomyosarcoma

PROVIDER: PRJNA564723 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR10092017.fastq.gz	Fastqsanger.gz
	SRR10092018.fastq.gz	Fastqsanger.gz
	SRR10092019.fastq.gz	Fastqsanger.gz
	SRR10092020.fastq.gz	Fastqsanger.gz
	SRR10092021.fastq.gz	Fastqsanger.gz

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Liaison between SNAI2 and MYOD enhances oncogenesis and suppresses differentiation in Fusion-Negative Rhabdomyosarcoma

Project description:Rhabdomyosarcoma (RMS) is a pediatric malignancy of mesenchymal origin. Fusion Negative-RMS (FN-RMS) tumors are associated with RAS-pathway activation. RMS tumors express pro-differentiation myogenic transcription factors MYOD and MYOG, yet why they are unable to differentiate is poorly understood. Here we show that SNAI2 is highly expressed in FN-RMS, is regulated by MYOD and blocks myogenic differentiation promoting growth. Molecularly, SNAI2 preferentially binds E-Box-associated enhancer elements and represses expression by dampening enhancer function. SNAI2 inhibits MYOD at a subset of myogenic enhancers associated with terminal differentiation. Functional dissection demonstrates SNAI2 suppresses a MYOG, MEF2 and CDKN1A differentiation program. SNAI2 knockdown transcriptionally mimics a chemical blockade of the mutant RAS signal in FN-RMS, providing new insight connecting the genetic and epigenetic causes of this disease.

2019-12-25 | GSE137168 | GEO

Interaction between SNAI2 and MYOD enhances oncogenesis and suppresses differentiation in Fusion Negative Rhabdomyosarcoma.

Project description:Rhabdomyosarcoma (RMS) is an aggressive pediatric malignancy of the muscle, that includes Fusion Positive (FP)-RMS harboring PAX3/7-FOXO1 and Fusion Negative (FN)-RMS commonly with RAS pathway mutations. RMS express myogenic master transcription factors MYOD and MYOG yet are unable to terminally differentiate. Here, we report that SNAI2 is highly expressed in FN-RMS, is oncogenic, blocks myogenic differentiation, and promotes growth. MYOD activates SNAI2 transcription via super enhancers with striped 3D contact architecture. Genome wide chromatin binding analysis demonstrates that SNAI2 preferentially binds enhancer elements and competes with MYOD at a subset of myogenic enhancers required for terminal differentiation. SNAI2 also suppresses expression of a muscle differentiation program modulated by MYOG, MEF2, and CDKN1A. Further, RAS/MEK-signaling modulates SNAI2 levels and binding to chromatin, suggesting that the differentiation blockade by oncogenic RAS is mediated in part by SNAI2. Thus, an interplay between SNAI2, MYOD, and RAS prevents myogenic differentiation and promotes tumorigenesis.

| S-EPMC7794422 | biostudies-literature

ChIP-seq of Active Histone Mark (H3K27ac) and Myogenic Regulatory Factors (MYF5 and MYOD) in Fusion Negative Rhabdomyosarcoma Cell Lines

Project description:We performed Chip-seq analysis of Myogenic Regulatory Transcription Factors (MYF5 and MYOD) in Fusion Negative Rhabdomyosarcoma cell lines. Endogenous MYF5/H3K27ac Chip-seq was performed in Rh18 cells and MYOD-H3K27ac Chip-seq was performed in RD cells, given that these cell lines express these proteins in a mutually-exclusive manner. Analysis revealed a common subset of enhancer and promoter regions bound by these transcription factors that are enriched for cell cycle regulation and embryonic muscle development pathways. Keywords: rhabdomyiosarcoma, Chip-seq, chromatin, Transcription factos, MYF5, MYOD

2016-12-20 | GSE84628 | GEO

Gene Expression Profiling of Fusion Negative Rhabdomyosarcoma Cell Lines

Project description:We analyzed the expression of two fusion-negative established Rhabdomyosarcoma cell lines. Together with Chip-seq, we were able to identify transcribed loci bound by myogenic regulatory transcription factors (MYF5 and MYOD) that pertain to embryonic muscle development and cell cycle regulation pathways. Keywords: rhabdomyosarcoma, gene expression profiling, RD, Rh18

2016-12-20 | GSE84629 | GEO

Expression Profiling of human Fusion-Positive and Fusion-Negative Rhabdomyosarcoma

Project description:Genome-wide gene expression in 33 fusion-positive and 25 fusion-negative rhabdomyosarcoma cases was studied using GeneChip Human Genome U133 Plus2 (Affymetrix) Fusion-positive versus fusion-negative rhabdomyosarcoma tumors

2016-06-01 | E-GEOD-66533 | biostudies-arrayexpress

A MYOD-SKP2 axis boosts tumorigenesis in fusion negative rhabdomyosarcoma by preventing differentiation through p57Kip2 targeting [RNA-seq]

Project description:Rhabdomyosarcoma (RMS) is a pediatric mesenchymal-derived malignancy encompassing Fusion Positive (FP)-RMS expressing PAX3/7-FOXO1 and Fusion Negative (FN)-RMS often mutated in the RAS pathway. RMS expresses the master myogenic transcription factor MYOD that, paradoxically, is unable to support differentiation while essential for tumor cell survival. We identify here SKP2, an oncogenic E3-ubiquitin ligase, as a critical driver of tumorigenesis in FN-RMS. SKP2 is overexpressed in RMS at the highest levels among several adult and pediatric cancers and its expression is maintained by MYOD through an intronic enhancer within the gene. In FN-RMS SKP2 promotes cell cycle progression and prevents differentiation directly targeting p27Kip1 and p57Kip2, respectively, unlocking a transcriptional myogenic program, partly MYOD-dependent, resulting in de novo expression of terminal muscle differentiation markers. SKP2 depletion strongly affects stemness and tumorigenic features in vitro and prevents in vivo tumor growth. The in vitro effects are mirrored by the SKP2 inhibitor SMIP004. Moreover, the investigational NEDDylation inhibitor MLN4924 hampers SKP2 functions restraining FN-RMS cell survival and tumor growth. Our results uncover a MYOD-SKP2 axis crucial for the crosstalk between transcriptional and post-translational mechanisms that contribute to FN-RMS tumorigenesis and broaden the understanding of MYOD function. Furthermore, they suggest inhibition of NEDDylation as a potential therapeutic approach in this tumor.

2023-08-30 | GSE241282 | GEO

A MYOD-SKP2 axis boosts tumorigenesis in fusion negative rhabdomyosarcoma by preventing differentiation through p57Kip2 targeting [Hi-ChIP]

2023-10-16 | GSE245495 | GEO

A MYOD-SKP2 axis boosts tumorigenesis in fusion negative rhabdomyosarcoma by preventing differentiation through p57Kip2 targeting [ChIP-seq]

2023-08-30 | GSE241279 | GEO

Fusion Negative Rhabdomyosarcoma Cell Lines

Project description:Fusion Negative Rhabdomyosarcoma Cell Lines

| PRJNA330685 | ENA

Expression Profiling of human Fusion-Positive and Fusion-Negative Rhabdomyosarcoma

Project description:Genome-wide gene expression in 33 fusion-positive and 25 fusion-negative rhabdomyosarcoma cases was studied using GeneChip Human Genome U133 Plus2 (Affymetrix)

2016-06-01 | GSE66533 | GEO

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