immediately adjacent to a single-stranded complementary binding region for the ODN conjugate. The conjugates demonstrated excellent stability in physiologic conditions and stereospecific, hybridization-triggered alkylation of the synthetic ODN targets. The dependence of the reaction rates on sequence of the duplex target region was in accord with the predicted minor groove binding of the conjugated CPI
具有共轭反应基团的寡聚脱氧
核糖核苷酸 (ODN) 是潜在的序列特异性
基因灭活剂。抗肿瘤抗生素 CC-1065 优选结合在双链 DNA 富含 AT 位点的小沟中,药物的环丙
吡咯并
吲哚 (CPI) 亚基在其 N3 位置烷基化
腺嘌呤。合成纯对映体 (+)- 和 (-)-CPI 及其 N5-甲基同系物 (MCPI) 并与 ODN 缀合。评估这些偶联物使含有与单链互补结合区紧邻的双链区的靶标烷基化的能力,用于ODN偶联物。偶联物在生理条件下表现出优异的稳定性,并且立体特异性、杂交触发的合成 ODN 靶标的烷基化。反应速率对双链靶区序列的依赖性与预测的偶联CPI的小沟结合一致。反应性高度依赖于交叉
锂的结构...