Yamane A. MagiProbe: a novel fluorescence quenching-based oligonucleotide probe carrying a fluorophore and an intercalator.
Nucleic Acids Res 2002;
30:e97. [PMID:
12364614 PMCID:
PMC140557 DOI:
10.1093/nar/gnf096]
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Abstract
Fluorescence is the favored signaling technology for molecular diagnoses. Fluorescence energy transfer-based methods are powerful homogeneous assay tools. A novel oligonucleotide probe, named MagiProbe, which is simple to use, is described, and information given about the duplex formed with a target. The probe internally has a fluorophore and an intercalator. Its fluorescence is quenched by the intercalator in the absence of a target sequence. On hybridization with a target sequence, the probe emits marked fluorescence due to the interference in quenching by intercalation. Furthermore, MagiProbe hybridized with a single-base mismatched target emits less fluorescence than with a perfect matched target. It therefore can detect a single base difference in a double-stranded form with a target.
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