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Updated: Jan 4, 2026

Detection and Monitoring of Tumor Associated Circulating DNA in Patient Biofluids
Published on: June 8, 2019
Solid-Phase Hybridization Assay for Detection of Mutated Cancer DNA by Fluorescence
Maria Taskova1, Kira Astakhova2
1Department of Chemistry, Technical University of Denmark, Kongens Lyngby, Denmark.
Abstract:
We report a straightforward protocol for the detection of mutated DNA extracted from cancer cells. The assay combines a step-wise solid-phase hybridization and a readout by fluorescence emission. We detect a single-nucleotide polymorphism in two human oncogenes, BRAF and EGFR, and reach a limit of the detection of 300 pM by conventional fluorometry. The protocol described herein may be used as a foundation for development of automatic optimized assays capable for detection of mutant DNA and RNA in vitro and in cells.

