作者:Yoshiyuki Hari、Takashi Osawa、Yutaro Kotobuki、Aiko Yahara、Ajaya R. Shrestha、Satoshi Obika
DOI:10.1016/j.bmc.2013.04.049
日期:2013.7
Artificial thymidine monomers possessing amide or N-methylamide bridges were designed, synthesized, and introduced into oligonucleotides. UV-melting experiments showed that these oligonucleotides preferred single-stranded RNA (ssRNA) to single-stranded DNA (ssDNA) in duplex formation. Both amide-and N-methylamide-modified oligonucleotides led to a significant increase in the binding affinity to ssRNA by up to +4.7 and +3.7 degrees C of the T-m value per modification, respectively, compared with natural oligonucleotide. In addition, their oligonucleotides showed high stability against 3'-exonuclease. (C) 2013 Elsevier Ltd. All rights reserved.