Perturbing pro-survival proteins using quinoxaline derivatives: A structure–activity relationship study
作者:Rajkumar Rajule、Vashti C. Bryant、Hernando Lopez、Xu Luo、Amarnath Natarajan
DOI:10.1016/j.bmc.2012.02.022
日期:2012.4
In HeLa cells the combinatorial knockdown of Bcl-xL and Mcl-1 is sufficient to induce spontaneous apoptosis. Quinoxaline derivatives were screened for the induction of Mcl-1 dependent apoptosis using a cell line without functional Bcl-xL. Quinoxaline urea analog 1h was able to specifically induce apoptosis in an Mcl-1 dependent manner. We demonstrate that even small changes to 1h results in dramatic loss of activity. In addition, 1h and ABT-737 synergistically inhibit cell growth and induce apoptosis. Our results also suggest that 1h could have therapeutic potential against ABT-737 refractory cancer. (C) 2012 Elsevier Ltd. All rights reserved.