Synthesis, characterization and DNA-binding and DNA-photocleavage studies of two Ru(II) complexes containing two main ligands and one ancillary ligand

Synthesis, characterization and DNA-binding and DNA-photocleavage studies of two Ru(II) complexes containing two main ligands and one ancillary ligand
复制标题

含有两个主要配体和一个辅助配体的两种 Ru(II) 配合物的合成、表征以及 DNA 结合和 DNA 光裂解研究

DOI:
10.1016/j.poly.2011.04.047
复制
发表时间:
2011-08
期刊:
影响因子:
2.6
通讯作者:
Chen, Huo-Yan
Chen, Huo-Yan
中科院分区:
化学3区
文献类型:
--
作者:
Sun, Jing;Liu, Jie;Gao, Feng;Ji, Liang-Nian;Wu, Shuo;Mao, Zong-Wan;Chen, Huo-Yan

文献摘要

参考文献

被引文献

相似文献

研究了两种钌配合物[Ru(L1)(dppz)2](PF 6)4(1)和[Ru(L2)(dppz)2](PF 6)4(2)(L1= 5,5 ′-二(1-(三乙基铵基)甲基)-2,2 ′-联吡啶阳离子; L2= 5,5 ′-二(1-(三丁基铵基)甲基)-2,2 ′-联吡啶阳离子; dppz=联吡啶并[3,2-a:2′,3 ′-c]吩嗪)与DNA的结合和DNA的光断裂性质.实验结果表明,配合物1与DNA的结合亲和力大于配合物2,两种配合物在水溶液中均能发光,配合物1与DNA以嵌入方式结合,配合物2与DNA以部分嵌入方式结合,配合物2与DNA的结合具有较好的对映选择性.此外,复合物1显示出比2更高效的DNA切割活性,在此期间,超螺旋DNA被两种复合物转化为切口DNA。在B3 LYP/LanL 2DZ基组水平上,采用密度泛函理论(DFT)方法对两种配合物进行了理论计算.计算结果可以合理地解释这些复合物的DNA结合亲和力和结合常数(Kb)的实验趋势。
DNA-binding and DNA-photocleavage properties of two Ru(II) complexes, [Ru(L1)(dppz)2](PF6)4(1) and [Ru(L2)(dppz)2](PF6)4(2) (L1=5,5′-di(1-(triethylammonio)methyl)-2,2′-dipyridyl cation; L2=5,5′-di(1-(tributylammonio)methyl)-2,2′-dipyridyl cation; dppz=dipyrido[3,2-a:2′,3′-c]phenazine, have been investigated. Experimental results show that the DNA-binding affinity of complex 1 is greater than that of 2, both complexes emit luminescence in aqueous solution, either alone or in the presence of DNA, complex 1 can bind to DNA in an intercalative mode while 2 most likely interacts with DNA in a partial intercalation fashion, and complex 2 serves as a better candidate for enantioselective binding to CT-DNA compared with 1. Moreover, complex 1 reveals higher efficient DNA cleavage activity than 2, during which supercoiled DNA is converted to nicked DNA with both complexes. Theoretical calculations for the two complexes have been carried out applying the density functional theory (DFT) method at the level of the B3LYP/LanL2DZ basis set. The calculated results can reasonably explain the obtained experimental trends in the DNA-binding affinities and binding constants (Kb) of these complexes.
DOI: 10.1002/chin.199830319
发表时间: 1998-03
期刊: Chemical reviews
影响因子: 62.1
作者:
B. Armitage
通讯作者: B. Armitage
DOI: 10.1002/chin.200709227
发表时间: 2007
期刊:
影响因子: --
作者:
J. Vos;J. Kelly
通讯作者: J. Kelly
DOI: 10.1063/1.448799
发表时间: 1985-01-01
影响因子: 4.4
作者:
HAY, PJ;WADT, WR
通讯作者: WADT, WR
DOI: 10.1093/nar/19.19.5403
发表时间: 1991-10
影响因子: 14.9
作者:
S. Friedman;S. Som;Lian-Fu Yang
通讯作者: S. Friedman;S. Som;Lian-Fu Yang
DOI: 10.1063/1.464304
发表时间: 1993-01-15
影响因子: 4.4
作者:
BECKE, AD
通讯作者: BECKE, AD