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Circulating Tumor Cells: A Review of Non-EpCAM-Based Approaches for Cell Enrichment and Isolation

Abstract : Background: Circulating tumor cells (CTCs) are biomarkers for non-invasively measuring the evolution of tumor genotypes during treatment and disease progression. Recent technical progress has made it possible to detect and characterize CTCs at the single-cell level in blood. Content: Most current methods are based on epithelial cell adhesion molecule (EpCAM) detection, but numerous studies have demonstrated that EpCAM is not a universal marker for CTC detection since it fails to detect both carcinoma cells that undergo epithelial-mesenchymal transition (EMT), and CTCs of mesenchymal origin. Moreover, EpCAM expression has been found in patients with benign diseases. A large proportion of the current studies and reviews about CTCs describe EpCAM based methods, but there are evidences that not all tumor cells can be detected using this marker. Here we describe the most recent EpCAM-independent methods for enriching, isolating and characterizing CTCs, based on physical and biological characteristics, and point out their main advantages and disadvantages. Summary: CTCs offer an opportunity to obtain key biological information required for the development of personalized medicine. However there is no universal marker of these cells. To strengthen the clinical utility of CTCs, it is important to improve existing technologies and develop new, non-EpCAM based systems to enrich and isolate CTCs.
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Submitted on : Monday, February 13, 2017 - 1:13:27 PM
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Tellez-Gabriel et al Clin Chem...
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Marta Tellez Gabriel, Lidia Rodriguez Calleja, Antoine Chalopin, Benjamin Ory, Dominique Heymann. Circulating Tumor Cells: A Review of Non-EpCAM-Based Approaches for Cell Enrichment and Isolation. Clinical Chemistry, American Association for Clinical Chemistry, 2016, 62 (4), pp.571 - 581. ⟨10.1373/clinchem.2015.249706⟩. ⟨inserm-01466107⟩



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