Osawa T, Hitomi Y, Wakita S, Kim H, Ito Y, Hari Y. Synthesis and hybridizing properties of isoDNAs including 3'-O,4'-C-ethyleneoxy-bridged 5-methyluridine derivatives.
Bioorg Med Chem 2018;
26:3875-3881. [PMID:
29861173 DOI:
10.1016/j.bmc.2018.05.043]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 05/22/2018] [Accepted: 05/24/2018] [Indexed: 11/20/2022]
Abstract
3',4'-Ethyleneoxy-bridged 5-methyluridine derivatives with methyl groups in the bridge, (R)-Me-3',4'-EoNA-T and (S)-Me-3',4'-EoNA-T, were synthesized, and these two analogs and unsubstituted 3',4'-EoNA-T were successfully incorporated into a 2',5'-linked oligonucleotide (isoDNA). Their duplex-forming ability with complementary DNA and complementary RNA, and triplex-forming ability with double-stranded DNA, were evaluated by UV-melting experiments. The results indicated that isoDNAs, including these 3',4'-EoNA analogs, could hybridize exclusively with complementary RNA. In particular, 3',4'-EoNA-T and (R)-Me-3',4'-EoNA-T modifications within isoDNA could stabilize the duplexes with complementary RNA compared with unmodified or 3',4'-BNA-modified isoDNAs.
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