Abstract
We established a new design for a single molecular beacon-conjugated gold nanoparticle, named monoMB-GNP, which showed enhanced fluorescence emission only in the presence of the complementary DNA sequence. MonoMB-GNP also showed no apparent toxicity to NIH/3T3 cells at 1 nM, as determined by the water-soluble tetrazolium assay. Importantly, the lactobionic acid was successfully modified on the surface of monoMB-GNP. The proposed nanoparticle has prospects for use in several applications for targetable molecular beacon strategies.
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