A FRET-based DNA nano-tweezer technique for the imaging analysis of specific mRNA
Literature Information
Hisakage Funabashi, Keisuke Nakatsuka, Akio Kuroda
A DNA nano-tweezer (DNA-NT) structure-based target mRNA detection probe, which uses fluorescence resonance energy transfer (FRET) as a detection signal and works as a single molecule, has been developed. This FRET-paired fluorescent dye-modified DNA-NT, self-assembled from three single-stranded DNAs, alters its structure from open to closed states and produces a FRET signal in response to in vitro transcripts of Hes-1 mRNA. Our results showed that the FRET-based DNA-NT detected both GLUT1 mRNA as a pre-fixed target mRNA model and Hes-1 mRNA as a model expressed inside a living cell. These results confirm the feasibility of using the FRET-based DNA-NT for imaging analysis of target mRNA.
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