Synthesis and G-Quadruplex-binding Properties of Cationic Platinum(II) Terpyridine Complexes Containing σ-Alkynyl Auxiliaries
作者:Zhize Ou、Zhao Feng、Guixia Liu、Yongjie Chen、Yunyan Gao、Yi Li、Xuesong Wang
DOI:10.1246/cl.141045
日期:2015.4.5
The cationic alkynylplatinum(II) terpyridine complexes show high affinity (Ka > 107 M−1) and reasonable selectivity for telomeric and c-myc G-quadruplexes over duplex DNA. In the absence of alkali cations, these Pt(II) complexes can promote the formation and stabilization of G-quadruplexes. The cytotoxicity of complexes 2 and 3 against the A549 cancer cell line is ca. 25-fold and 35-fold higher than that of cisplatin, respectively.
阳离子炔基铂(II)三吡啶配合物对端粒和 c-myc G-四链体比对双链 DNA 表现出高亲和力(Ka > 107 M-1)和合理的选择性。在没有碱阳离子的情况下,这些铂(II)配合物可以促进 G-四链体的形成和稳定。复合物 2 和 3 对 A549 癌细胞株的细胞毒性分别比顺铂高出约 25 倍和 35 倍。