4β-[4′-(1-(Aryl)ureido)benzamide]podophyllotoxins as DNA topoisomerase I and IIα inhibitors and apoptosis inducing agents
作者:Ahmed Kamal、Paidakula Suresh、M. Janaki Ramaiah、T. Srinivasa Reddy、Ravi Kumar Kapavarapu、Bolla Narasimha Rao、Syed Imthiajali、T. Lakshminarayan Reddy、S.N.C.V.L. Pushpavalli、Nagula Shankaraiah、Manika Pal-Bhadra
DOI:10.1016/j.bmc.2013.06.033
日期:2013.9
A series of 4 beta-[4'-(1-(aryl)ureido)benzamide]podophyllotoxin congeners (11a-1) were synthesized and evaluated for their cytotoxic activity against six human cancer cell lines. Some of the compounds like 11a, 11h, 11k and 11I showed significant anti-proliferative activity in Colo-205 cells and were superior to etoposide. The flow-cytometric analysis studies indicated that these compounds show strong G1 cell cycle arrest, as well exhibited improved inhibitory activities on DNA topoisomerase I and Ha enzymes. These compounds induce apoptosis by up regulating caspase-3 protein as observed by ELISA and Western blotting analysis. In addition, a brief structure-activity relationship studies within the series along with docking results of representative compounds 11a, 11h, 11k, 11I were presented. (C) 2013 Elsevier Ltd. All rights reserved.