Promotive Effect of the Platinum Moiety on the DNA Cleavage Activity of Copper-Based Artificial Nucleases
作者:Xindian Dong、Xiaoyong Wang、Miaoxin Lin、Hui Sun、Xiaoliang Yang、Zijian Guo
DOI:10.1021/ic100001x
日期:2010.3.1
In this study, two copper(II) complexes, [CuL1Cl2] (1) and [CuL2Cl2] (2), and two copper(II)−platinum(II) heteronuclear complexes, [CuPtL1(DMSO)Cl4] (3) and [CuPtL2(DMSO)Cl4] (4), were synthesized using two bifunctional ligands, N-[4-(2-pyridylmethoxy)benzyl]-N,N-bis(2-pyridylmethyl)amine (L1) and N-[3-(2-pyridylmethoxy)benzyl]-N,N-bis(2-pyridylmethyl)amine (L2). These complexes have been characterized
如果能够进一步提高其DNA切割效率和选择性,铜基人工金属核酸酶可能会满足更多的生物医学要求。在这项研究中,两个铜(II)配合物,[CuL 1 Cl 2 ](1)和[CuL 2 Cl 2 ](2),和两个铜(II)-铂(II)杂核配合物,[CuPtL 1(DMSO) )Cl 4 ](3)和[CuPtL 2(DMSO)Cl 4 ](4),是使用两个双功能配体N- [4-(2-吡啶基甲氧基)苄基] -N,N合成的-双(2-吡啶基甲基)胺(L 1)和N- [3-(2-吡啶基甲氧基)苄基] -N,N-双(2-吡啶基甲基)胺(L 2)。这些络合物的特征在于元素分析,电喷雾电离质谱,IR光谱和UV-vis光谱。这些复合物的DNA结合能力遵循1 < 2 < 3 < 4的顺序如光谱学和琼脂糖凝胶电泳研究的结果所示。在抗坏血酸的存在下,在微摩尔浓度下,它们对超螺旋pUC19质粒DNA的切割活性非常明显。与单独