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Updated: Jul 10, 2026

Split Hybridization Probe Utilizing a DNA Fluorescent Light-up Aptamer as a Signal Reporter for Sequence-Specific Nucleic Acid Analysis
Published on: July 8, 2025
Synthesis of naphthyridine-conjugated DNA probes and their application to SNPs typing
Akio Kobori1, Takashi Mori, Asako Yamayoshi
1Department of Biomolecular Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Gosyokaidocho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
Abstract:
We have developed diaminonaphthyridine-conjugated DNA probes (DANP-ODNs), which contain diaminonaphtyridine (DANP) derivatives at 5' end of oligodeoxynucleotides. We here report the synthesis and fluorescence properties of aeDNAP-ODN, ahDANP-ODN, and baeDANP-ODN which contains N-amino ethyl-2,7-diamino-1,8-naphtyridine, N-aminohexyl-2,7-diamino1,8-naphthyridine, and N,N'-bisaminoethyl-2,7-diamino-1,8-naphtyridine, respectively. The emission spectra of DANP-ODNs were measured in the presence of their complementary strand having single nucleotide alteration. The fluorescence intensity at 420 nm of baeDANP-ODN is 12-fold higher in the presence of Callele ODN than that in the presence of A-allele ODN.
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