DNA binding and anticancer activity of naphthalimides with 4-hydroxyl-alkylamine side chains at different lengths
作者:Kerang Wang、Yueqing Wang、Xinhao Yan、Hua Chen、Gang Ma、Pingzhu Zhang、Jinmei Li、Xiaoliu Li、Jinchao Zhang
DOI:10.1016/j.bmcl.2011.12.018
日期:2012.1
A series of novel naphthalimide derivatives modified with various hydroxyl-alkylamines at 4-position have been synthesized. Their DNA binding properties were investigated by UV-Vis, fluoescence, and circular dichroism (CD) spectroscopies and thermal denaturation. The results showed that compounds 3a-e as the DNA intercalator exhibited middle binding affinities with Ct-DNA. The anticancer activities of 3a-e were preliminarily evaluated, compounds 3c and 3e exhibited potent anticancer activities against Bel-7402 cell line with IC50 values of 5.57 and 9.17 mu M, respectively. More interestingly, enhancement of the fluorescence emission was found in the complexes of 3a-e with Ct-DNA, especially for 3c. This would make these compounds as potential DNA staining agents. (C) 2011 Elsevier Ltd. All rights reserved.