Abstract
We present an innovative “Rapid Catch and Signal” (DNA-RCS) technology for the simultaneous highly selective detection of multiple specific DNA sequences in solution. The DNA-RCS technology combines advantages of microwave-accelerated DNA hybridization (Rapid Catch) with the metal-enhanced fluorescence (MEF) technology (Signal), to enable specific DNA’s to be detected at high sensitivity within seconds. Fluorescent DNA labels, which play the role of molecular sensor probes, show a strong response upon DNA hybridization, due to fluorophore coupling with nanoparticle plasmons at a short (10–30 nm) distance from the surface. We have also shown that the fluorophore sensor probes demonstrate high photostability due to close proximity to a SiF surface, which significantly increases the total stability and reliability of the assay. Applications of the DNA-RCS technology in the life sciences, its advantages and benefits as compared to other DNA detection schemes, such as PCR, are subsequently discussed.
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