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Ewing Sarcoma cell lines treated with mithramycin

ABSTRACT: The study aims to define gene expression changes associated with mithramycin treatment of Ewing Sarcoma cell lines.

ORGANISM(S): Homo sapiens

PROVIDER: GSE25127 | GEO | 2011/04/18

SECONDARY ACCESSION(S): PRJNA134579

REPOSITORIES: GEO

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Ewing Sarcoma cell lines treated with mithramycin

Project description:The study aims to define gene expression changes associated with mithramycin treatment of Ewing Sarcoma cell lines. The data consist of 12 arrays. Two cell lines, TC71 and TC32, were treated with solvent control or with mithramycin, and RNA was extracted at 6 hours. Three biological replicates per cell line/treatment.

2011-04-18 | E-GEOD-25127 | biostudies-arrayexpress

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Project description:This SuperSeries is composed of the following subset Series: GSE36857: Goldengate Methylation analysis: Ewing Sarcoma GSE36858: 5- AZA treatment of EWS cell lines Refer to individual Series

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RUNX3 Facilitates Growth of Ewing Sarcoma Cells

Project description:Ewing sarcoma is an aggressive pediatric small round cell tumor that predominantly occurs in bone. Approximately 85% of Ewing sarcomas harbor the EWS/FLI fusion protein, which arises from a chromosomal translocation, t(11:22)(q24:q12). EWS/FLI interacts with numerous lineage-essential transcription factors to maintain mesenchymal progenitors in an undifferentiated state. We previously showed that EWS/FLI binds the osteogenic transcription factor RUNX2 and prevents osteoblast differentiation. In this study, we investigated the role of another Runt-domain protein, RUNX3, in Ewing sarcoma. RUNX3 participates in mesenchymal-derived bone formation and is a context dependent tumor suppressor and oncogene. RUNX3 was detected in all Ewing sarcoma cells examined, whereas RUNX2 was detected in only 73% of specimens. Like RUNX2, RUNX3 binds to EWS/FLI via its Runt domain. EWS/FLI prevented RUNX3 from activating the transcription of a RUNX-responsive reporter, p6OSE2. Stable suppression of RUNX3 expression in the Ewing sarcoma cell line A673 delayed colony growth in anchorage independent soft agar assays and reversed expression of EWS/FLI-responsive genes. These results demonstrate an important role for RUNX3 in Ewing sarcoma. RNA-seq to compare transcriptiome of control A673 ewing sarcoma cells stably expression a non-target or RUNX3 shRNA

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