New bichalcone analogs as NF-κB inhibitors and as cytotoxic agents inducing Fas/CD95-dependent apoptosis
作者:M. Vijaya Bhaskar Reddy、Yuh-Chiang Shen、Jai-Sing Yang、Tsong-Long Hwang、Kenneth F. Bastow、Keduo Qian、Kuo-Hsiung Lee、Tian-Shung Wu
DOI:10.1016/j.bmc.2011.02.004
日期:2011.3
A series of novel bichalcone analogs were synthesized and evaluated in lipopolysaccharide (LPS)-activated microglial cells as inhibitors of nitric oxide (NO) and for in vitro anticancer activity using a limited panel of four human cancer cell lines. All analogs inhibited NO production. Compounds 4 and 11 exhibited optimal activity with IC50 values of 0.3 and 0.5 mu M, respectively, and were at least 38-fold better than the positive control. A mechanism of action study showed that both compounds significantly blocked the nuclear translocation of NF-kappa B p65 and up-regulation of iNOS at 1.0 mu M. Compound 4 and three other analogs (3, 20, and 23) exerted significant in vitro anticancer activity GI(50) values ranging from 0.70 to 13.10 mu M. A mode of action study using HT-29 colon cancer cells showed that 23 acts by inducing apoptosis signaling. (C) 2011 Elsevier Ltd. All rights reserved.