DUPA-FITC is a fluorescent reagent targeting PSMA , which specifically binds to prostate cancer cells expressing PSMA without non-specific binding to normal blood cells. DUPA-FITC can label PSMA -expressing prostate cancer cells in whole blood, followed by internalization and trafficking to acidic intracellular endosomes, during which the fluorescence is quenched. When combined with flow cytometry and density gradient centrifugation enrichment, DUPA-FITC enables quantitative analysis of circulating tumor cells in peripheral blood samples from prostate cancer patients.
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