Sequence-Specific Trapping of Topoisomerase I by DNA Binding Polyamide−Camptothecin Conjugates
作者:Clay C. C. Wang、Peter B. Dervan
DOI:10.1021/ja010392p
日期:2001.9.1
ligands that bind in the minor groove of DNA with affinities and specificities comparable to those of DNAbinding proteins. Three polyamide-camptothecin conjugates 1-3 with linkers varying in length between 7, 13, and 18 atoms were synthesized to trap the enzyme Topoisomerase I and induce cleavage at predetermined DNA sites. One of these, polyamide-camptothecin conjugate 3 at nanomolar concentration (50 nM)
发夹型吡咯-咪唑聚酰胺是合成配体,可与 DNA 小沟结合,其亲和力和特异性与 DNA 结合蛋白的亲和力和特异性相当。合成了三种聚酰胺-喜树碱缀合物 1-3,其接头长度在 7、13 和 18 个原子之间变化,以捕获拓扑异构酶 I 并在预定的 DNA 位点诱导裂解。其中之一是纳米摩尔浓度 (50 nM) 的聚酰胺-喜树碱偶联物 3,在存在 Topo I(37 摄氏度)的情况下,以高产率 (77%) 从聚酰胺结合位点诱导 3 到 4 个碱基对之间的 DNA 切割。
Li; Gao; Qiu, Letters in drug design and discovery, 2011, vol. 8, # 9, p. 698 - 703