Bifunctional Rhodium Intercalator Conjugates as Mismatch-Directing DNA Alkylating Agents
作者:Ulrich Schatzschneider、Jacqueline K. Barton
DOI:10.1021/ja048543m
日期:2004.7.1
A conjugate of a DNA mismatch-specific rhodium intercalator, containing the bulky chrysenediimine ligand, and an aniline mustard has been prepared, and targeting of mismatches in DNA by this conjugate has been examined. The preferential alkylation of mismatched over fully matched DNA is found by a mobility shift assay at concentrations where untethered organic mustards show little reaction. The binding
一种 DNA 错配特异性铑嵌入剂(含有庞大的 chrysenediimine 配体)和苯胺芥的结合物已经制备出来,并且已经研究了这种结合物对 DNA 错配的靶向性。通过迁移率变化分析发现,在不受约束的有机芥末几乎没有反应的浓度下,错配的优先烷基化优于完全匹配的 DNA。Rh嵌入剂的结合位点由DNA光裂解确定,共价修饰的位置建立在与N-烷基化相关的增强脱嘌呤的基础上。错配 DNA 的位点选择性烷基化使这些偶联物成为共价标记 DNA 碱基对错配和新化疗设计的有用工具。