Trinuclear Ru(II) polypyridyl complexes as human telomeric quadruplex DNA stabilizers
作者:Li Xu、Guo-Liang Liao、Xiang Chen、Cun-Yuan Zhao、Hui Chao、Liang-Nian Ji
DOI:10.1016/j.inoche.2010.06.008
日期:2010.9
Two new trinuclear ruthenium(II) complexes [(bpy)(6)Ru-3(tpbip)](6+) (1) and [(bPY)(6)Ru-3(tptaip)](6+) (2) (bpy=2,2'-bipyridine, tpbip=1,3,5-tris(1,10-phenanthroline-[5,6-d]imidazol-2-yl)-benzene, tptaip=2,4,6-tri(1,10-phenanthroline-[5,6-d]imidazol-2-yl)-1,3,5-triazine) have been synthesized and characterized. The interaction of human telomeric DNA with Ru(II) complexes was explored by means of CD spectroscopy, fluorescence titration, ITC and FRET melting. Results indicated that two complexes not only induce a remarkable conformational change of human telomeric DNA, but also have the ability to stabilize the C-quadruplex. (C) 2010 Elsevier B.V. All rights reserved.