No abstract

An acridone-labeled DNA aptamer was synthesized to produce an aptamer probe. This aptamer probe could detect a specific molecule based on conformational changes upon binding of the specific molecules and the quenching of acridone emission.

Acridone is an attractive fluorescent molecule for use in DNA probes. Sensing molecule, which has acridone as a signaling moiety and DNA aptamer as a recognition moiety, was prepared by postsynthetic modification method. The fluorescence of this sensing molecule changed depending on the DNA structure and l-argininamide could be detected by this molecule. This strategy could provide a quencher-free aptamer beacon.