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Oncotarget. 2020 Aug 04;11(31):2995-3012. doi: 10.18632/oncotarget.27678. eCollection 2020 Aug 04.

Ewing sarcoma family of tumors-derived small extracellular vesicle proteomics identify potential clinical biomarkers.

Oncotarget

Glenson Samuel, Jennifer Crow, Jon B Klein, Michael L Merchant, Emily Nissen, Devin C Koestler, Kris Laurence, Xiaobo Liang, Kathleen Neville, Vincent Staggs, Atif Ahmed, Safinur Atay, Andrew K Godwin

Affiliations

  1. Division of Pediatric Hematology Oncology and Bone Marrow Transplantation, Children's Mercy Hospital, Kansas City, MO, USA.
  2. Department of Pediatrics, University of Missouri-Kansas City, Kansas City, MO, USA.
  3. University of Kansas Cancer Center, Kansas City, KS, USA.
  4. These authors contributed equally to this work.
  5. Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS, USA.
  6. Clinical Proteomics Laboratory, Department of Medicine, University of Louisville, Louisville, KY, USA.
  7. Robley Rex VA Medical Center, Louisville, KY, USA.
  8. Department of Biostatistics & Data Science, University of Kansas Medical Center, Kansas City, KS, USA.
  9. Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
  10. Biostatistics & Epidemiology Core, Children's Mercy Hospital, Kansas City, MO, USA.
  11. Department of Pathology, Children's Mercy Hospital, Kansas City, MO, USA.
  12. Bristol-Myers Squibb, Cambridge, MA, USA.

PMID: 32821345 PMCID: PMC7415402 DOI: 10.18632/oncotarget.27678

Abstract

PURPOSE: Ewing Sarcoma Family of Tumors (ESFT), the second most common pediatric osseous malignancy, are characterized by the pathognomonic chromosomal

MATERIALS AND METHODS: We performed the first high quality proteomic study of ESFT-derived sEVs from 5 ESFT cell lines representing the most common

RESULTS: From these analyses, two membrane bound proteins with biomarker potential were selected, CD99/MIC2 and NGFR, to develop a liquid-based assay enriching of ESFT-associated sEVs and detection of sEV mRNA cargo (

CONCLUSIONS: In this study, we demonstrate utilization of circulating ESFT-associated sEVs in pediatric patients as a source of minimally invasive diagnostic and potentially prognostic biomarkers.

Keywords: EWS-ETS; Ewing sarcoma; biomarkers; exosomes; extracellular vesicles

Conflict of interest statement

CONFLICTS OF INTEREST Authors have no conflicts of interest to declare.

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