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Downstream EWS/FLI1 - upstream Ewing's sarcoma.

Heinrich Kovar1

  • 1Children's Cancer Research Institute, St Anna Kinderkrebsforschung, Zimmermannplatz 10, 1090 Vienna, Austria. heinrich.kovar@ccri.at.

Genome Medicine
|February 17, 2010
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Summary
This summary is machine-generated.

Genome research reveals Ewing's sarcoma is driven by the EWS/FLI1 oncogene, which controls cell growth and differentiation. Understanding this fusion protein

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Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Ewing's sarcoma family tumors are enigmatic embryonal bone cancers.
  • Recent genome research has elucidated their molecular pathogenesis.
  • A chimeric ETS-family oncogene, predominantly EWS/FLI1, characterizes these tumors.

Purpose of the Study:

  • To explore the molecular mechanisms underlying Ewing's sarcoma.
  • To understand the role of the EWS/FLI1 fusion oncogene.
  • To investigate the cellular origins and differentiation pathways in Ewing's sarcoma.

Main Methods:

  • Analysis of gene expression patterns.
  • Investigation of protein-DNA interactions.
  • Study of epigenetic modifications and microRNA regulation.

Main Results:

  • EWS/FLI1 drives tumor cell proliferation and inhibits differentiation.
  • EWS/FLI1 acts as a gene activator at specific chromatin binding sites.
  • EWS/FLI1 indirectly represses numerous genes via microRNA and epigenetic changes.

Conclusions:

  • Ewing's sarcoma originates from early pluripotent mesenchymal progenitors.
  • The EWS/FLI1 oncogene is central to the disease's molecular pathology.
  • Targeting EWS/FLI1 expression presents a potential therapeutic strategy.