Laboratory of Molecular Biophotonics

Hiroyuki Koshimoto

Akihiko Tsuji

Satoshi Kondo

Kaname Ishibashi

Masahiko Hirano

Yukari Iida

Detection probes labeled with fluorescent dyes, to which are bound nuclear membrane unpermeable molecules via linkers, having base sequences that can hybridize to a target nucleic acid. The probes are introduced into the cytoplasm of a living cell in which the target nucleic acid is present, and the target nucleic acid is detected by measurement of the change in fluorescence of the fluorescent dyes due to the formation of a hybrid of the target nucleic acid and the probes.

Nucleic acid detection in cytoplasm

This invention provides a method for monitoring the transcriptional synthesis of RNA, and to an apparatus therefor. Specifically, the invention resides in monitoring the initiation and termination of a transcription reaction for RNA synthesis, as well as the synthesis of full-length RNA by measuring the fluorescence of a pair of oligonucleotide probes of two types having a base sequence that continuously hybridizes to a part of a base sequence of the RNA synthesized by transcription, the pair of oligonucleotide probes comprising a donor probe labeled with an energy donor fluorescent molecule and an acceptor probe labeled with an energy acceptor fluorescent molecule.

Growing community of inventors

Kanagawa, Japan

Hiroyuki Koshimoto