Notomi R, Wang L, Osuki T, Okamura H, Sasaki S, Taniguchi Y. Synthesis of C-nucleoside analogues based on the pyrimidine skeleton for the formation of anti-parallel-type triplex DNA with a CG mismatch site.
Bioorg Med Chem 2020;
28:115782. [PMID:
32992254 DOI:
10.1016/j.bmc.2020.115782]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/15/2020] [Accepted: 09/17/2020] [Indexed: 10/23/2022]
Abstract
The triplex DNA forming method is an attractive tool as a gene-targeting agent. Using artificial nucleoside analogues based on C-nucleoside, stable and selective triplex DNA can be formed in a specific region of duplex DNA, and its biotechnology applications will greatly expand. In this study, we designed and synthesized novel C-nucleoside analogues based on the pyrimidine skeleton, 3MeAP-d(Y-Cl) and 3MeAP-d(Y-H), capable of recognizing a CG mismatch site that is not recognized by natural nucleosides. After incorporating them into the oligonucleotides, their triplex forming abilities were evaluated by gel-shift assay. Although it was only one sequence, the 3'-GZG-5' sequence, the stability of the CG mismatch site recognition was greatly improved compared with previous nucleoside analogues.
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