Metal-Assisted Hybridization of Oligonucleotides, Evaluation of Circular 2′-O-Me RNA as Ligands for the TAR RNA Target
作者:Laurence Zapata、Katell Bathany、Jean-Marie Schmitter、Serge Moreau
DOI:10.1002/ejoc.200390143
日期:2003.3
Two complementary oligonucleotides were conjugated with terpyridine ligands at their nearby 5′- and 3′-ends. Addition of a stoichiometric amount of a transition metal (Zn2+, Fe2+) resulted in a large increase in the melting temperature of the duplex. The conjugation of TPY to stem-loop oligomers provided an efficient procedure for the cyclisation of the oligomer after the addition of metal ions. Such
两个互补的寡核苷酸在其附近的 5'-和 3'-末端与三联吡啶配体缀合。添加化学计量量的过渡金属(Zn2+、Fe2+)导致双链体的熔化温度大幅增加。TPY 与茎环低聚物的共轭为添加金属离子后低聚物的环化提供了有效的方法。这种短茎环寡聚体旨在通过环环相互作用靶向 HIV-1 TAR RNA。添加 Zn2+ 离子为该 RNA 结构元件产生了良好的配体 (Kd = 30 nM)。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)