In vitro anticancer activity and evaluation of DNA duplex binding affinity of phenyl-substituted indoloquinolines
作者:Fanny Riechert-Krause、Andrea Eick、Renate Grünert、Patrick J. Bednarski、Klaus Weisz
DOI:10.1016/j.bmcl.2011.02.088
日期:2011.4
Phenyl-substituted indoloquinolines were studied for their biological activity and their DNA binding affinity. Water-soluble aminoalkyl derivatives were prepared and have shown significant in vitro anticancer activity. Unlike previous reports on the potential role of duplex DNA as target for various indoloquinoline based drugs, duplex UV melting experiments and fluorescence titrations suggest only weak and moderately strong binding of the phenyl-substituted indoloquinolines at 120 mM and 20 mM Na+ concentrations, respectively. Binding is suggested by ethidium displacement and circular dichroism experiments to be associated with drug intercalation between base pairs. (C) 2011 Elsevier Ltd. All rights reserved.