1. Optimization of rVAR2-Based Isolation of Cancer Cells in Blood for Building a Robust Assay for Clinical Detection of Circulating Tumor Cells.
- Author
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Sand NT, Petersen TB, Bang-Christensen SR, Ahrens TD, Løppke C, Jørgensen AM, Gustavsson T, Choudhary S, Theander TG, Salanti A, and Agerbæk MØ
- Subjects
- Cell Line, Tumor, Chondroitin Sulfates metabolism, Humans, Magnetics, Recombinant Proteins, Antigens, Protozoan genetics, Early Detection of Cancer methods, Neoplastic Cells, Circulating pathology
- Abstract
Early detection and monitoring of cancer progression is key to successful treatment. Therefore, much research is invested in developing technologies, enabling effective and valuable use of non-invasive liquid biopsies. This includes the detection and analysis of circulating tumor cells (CTCs) from blood samples. Recombinant malaria protein VAR2CSA (rVAR2) binds a unique chondroitin sulfate modification present on the vast majority of cancers and thereby holds promise as a near-universal tumor cell-targeting reagent to isolate CTCs from complex blood samples. This study describes a technical approach for optimizing the coupling of rVAR2 to magnetic beads and the development of a CTC isolation platform targeting a range of different cancer cell lines. We investigate both direct and indirect approaches for rVAR2-mediated bead retrieval of cancer cells and conclude that an indirect capture approach is most effective for rVAR2-based cancer cell retrieval.
- Published
- 2020
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