Design, Preparation, and Characterization of Zn and Cu Metallopeptides Based On Tetradentate Aminopyridine Ligands Showing Enhanced DNA Cleavage Activity
作者:Marta Soler、Eduard Figueras、Joan Serrano-Plana、Marta González-Bártulos、Anna Massaguer、Anna Company、M Ángeles Martínez、Jaroslav Malina、Viktor Brabec、Lidia Feliu、Marta Planas、Xavi Ribas、Miquel Costas
DOI:10.1021/acs.inorgchem.5b01680
日期:2015.11.16
conjugates has been developed, and the preparation and characterization of the corresponding metallotetrapeptides is described. The DNA cleavage activity of Cu and Zn metallopeptides has been evaluated and compared to their metal binding conjugates as well as to the parent complexes and ligands. Very interestingly, the oxidative Cu metallopeptides 1Cu and 2Cu show an enhanced activity compared to the
在这项工作中追求可以起化学核酸酶作用的氧化还原活性复合物与阳离子四肽的缀合,以探索这两种元素在DNA氧化裂解中的预期协同作用。具有四齿配体1,4-二甲基-7-(2-吡啶基甲基)-1,4,7-三氮杂环壬烷(Me2 PyTACN )的具有生物学意义的第一行金属离子(例如Zn(II)或Cu(II))的配位络合物)和(2 S,2 S ')-1,1'-双(吡啶-2-基甲基)-2,2'-联吡咯烷((S,S')-BPBP)已与阳离子LKKL四肽序列连接。已经开发了肽-四齿配体缀合物的固相合成,并且描述了相应的金属弹性肽的制备和表征。已经评估了铜和锌金属肽的DNA切割活性,并与它们的金属结合缀合物以及母体复合物和配体进行了比较。非常有趣的是,与母体络合物[Cu(PyTACN)] 2+和[Cu(BPBP)] 2+相比,氧化性Cu金属肽1 Cu和2 Cu的活性增强。在优化条件下,1 Cu显示的表观伪一级速率常数(k