Innovative methodology for the identification of soluble biomarkers in fresh tissues

  • B. C
  • A. T
  • A. B
  • et al.
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Abstract

The identification of diagnostic and prognostic biomarkers from early lesions, measurable in liquid biopsies remains a major challenge, particularly in oncology. Fresh human material of high quality is required for biomarker discovery but is often not available when it is totally required for clinical pathology investigation. Hence, all OMICs studies are done on residual and less clinically relevant biological samples. Here after, we present an innovative, simple, and non-destructive, procedure named EXPEL that uses rapid, pressure-assisted, interstitial fluid extrusion, preserving the specimen for full routine clinical pathology investigation. In the meantime, the technique allows a comprehensive OMICs analysis (proteins, metabolites, miRNAs and DNA). As proof of concept, we have applied EXPEL on freshly collected human colorectal cancer and liver metastases tissues. We demonstrate that the procedure efficiently allows the extraction, within a few minutes, of a wide variety of biomolecules holding diagnostic and prognostic potential while keeping both tissue morphology and antigenicity unaltered. Our method enables, for the first time, both clinicians and scientists to explore identical clinical material regardless of its origin and size, which has a major positive impact on translation to the clinic.Copyright © Costanza et al.

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B., C., A., T., A., B., T., H., O., P., A., B., … M., N. (2018). Innovative methodology for the identification of soluble biomarkers in fresh tissues. Oncotarget, 9(12), 10665–10680. https://doi.org/http://dx.doi.org/10.18632/oncotarget.24366

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