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RNA-seq data of JN and BER-DSRCT dox inducible shSIK1 cell lines

ABSTRACT: RNA-seq data of JN and BER-DSRCT dox inducible shSIK1 cell lines

PROVIDER: PRJNA809549 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR18109302_1.fastq.gz	Fastqsanger.gz
	SRR18109302_2.fastq.gz	Fastqsanger.gz
	SRR18109299_1.fastq.gz	Fastqsanger.gz
	SRR18109299_2.fastq.gz	Fastqsanger.gz

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RNA-seq data of JN and BER-DSRCT dox inducible shSIK1 cell lines

Project description:Depletion of SIK1 expression in DSRCT cell lines affected expressions of genes in cell cycle regulation pathways.

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Project description:The purpose of experiments consisted in studying the mode of action of Trabectedin in Desmoplastic Small Round Cell Tumor (DSRCT). In order to investigate the effects of Trabectedin in the expression of EWS-WT1 target genes in relation to the drug growth inhibitory effect, the JN-DSCRT-1 cell line was treated for 1 hour with 5 nM of Trabectedin. Samples were collected at 6, 12 and 24 hours after drug washout. Three biological replicates were used for each time point.

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Desmoplastic small round cell tumor is dependent on EWS-WT1

Project description:Desmoplastic small round cell tumor (DSRCT) is a rare and aggressive soft tissue malignancy. The disease is defined by the oncogenic EWS-WT1 transcription factor. However, the dependence of the tumor on this target has not been well-established and no EWS-WT1 targeted therapy has translated to the clinic. In this report we establish the dependence of DSRCT on EWS-WT1 as well as define a gene signature and a comprehensive list of downstream targets. The selective silencing of EWS-WT1 leads to the marked suppression of proliferation of both JN-DSRCT1 and BER cells. Loss of the fusion protein results in morphologic changes in the cells and eventual cellular apoptosis. RNA sequencing demonstrates large scale gene expression changes attributable to EWS-WT1 with several hundred induced or repressed downstream targets of the fusion. We conclude DSRCT is dependent on the EWS-WT1 transcription factor for cell survival. The presence of EWS-WT1 leads to enrichment of genes involved in aberrant cell differentiation and development as well as those involved in tumor metastasis.

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Proteomic Comparison Of DSRCT, Normal Mesenteric Tissues and ES

Project description:Desmoplastic small round cell tumor (DSRCT) is an aggressive malignancy that occurs predominantly in young adult males and is characterized by abdominopelvic sarcomatosis exhibiting multi-lineage cellular nests of epithelial, muscular, mesenchymal, and neural differentiation admixed with desmoplastic stroma. Prior to the recognition of the disease as a distinct clinical entity, DSRCT was invariably misclassified as poorly differentiated atypical cancer of the testes, ovary, mesentery, or gastrointestinal tract, and the chemotherapies used for those malignancies elicited poor clinical response. As previously reported, a tectonic shift in the treatment of these patients occurred after researchers made two astute observations: 1) DSRCT microscopically resembles other small round “blue cell” sarcoma subtypes (e.g., ES, rhabdomyosarcoma, synovial sarcoma), and 2) DSRCT and ES have the same N-terminal EWSR1 fusion partner. Proteomic analysis using a reverse-phase protein lysate array (RPPA) was used to elucidate biomarkers that distinguish DSRCT from adjacent normal tissue and Ewing sarcoma. This proteomic analysis revealed novel proteins, such as the androgen receptor and Syk, that may be susceptible to drug targeting, as well as oncogenic pathways like Akt-PI3K that are highly expressed in DSRCT.

2020-12-31 | GSE108687 | GEO

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