中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
3-(4-溴-2-氯-苯基氨基)-呋喃[3,2-c]吡啶-2-羧酸乙酯 | 3-(4-bromo-2-chloro-phenylamino)-furo[3,2-c]pyridine-2-carboxylic acid ethyl ester | 1009333-70-3 | C16H12BrClN2O3 | 395.64 |
—— | ethyl 3-(4-trimethylsilyl-2-fluoro-phenylamino)-furo[3,2-c]pyridine-2-carboxylate | 1009333-67-8 | C19H21FN2O3Si | 372.471 |
—— | ethyl 3-(4-bromo-2,5-difluoro-phenylamino)-furo[3,2-c]pyridine-2-carboxylate | 1009333-78-1 | C16H11BrF2N2O3 | 397.176 |
Although mitogen-activated protein (MAP)–extracellular signal-regulated kinase (ERK) kinase (MEK) inhibition is predicted to cause cell death by stabilization of the proapoptotic BH3-only protein BIM, the induction of apoptosis is often modest. To determine if addition of a Bcl-2 family inhibitor could increase the efficacy of a MEK inhibitor, we evaluated a panel of 53 non–small cell lung cancer and pancreatic cancer cell lines with the combination of navitoclax (ABT-263), a Bcl-2/Bcl-xL (BCL2/BCL2L1) antagonist, and a novel MAP kinase (MEK) inhibitor, G-963. The combination is synergistic in the majority of lines, with an enrichment of cell lines harboring KRAS mutations in the high synergy group. Cells exposed to G-963 arrest in G1 and a small fraction undergo apoptosis. The addition of navitoclax to G-963 does not alter the kinetics of cell-cycle arrest, but greatly increases the percentage of cells that undergo apoptosis. The G-963/navitoclax combination was more effective than either single agent in the KRAS mutant H2122 xenograft model; BIM stabilization and PARP cleavage were observed in tumors, consistent with the mechanism of action observed in cell culture. Addition of the phosphatidylinositol 3-kinase (PI3K, PIK3CA) inhibitor GDC-0941 to this treatment combination increases cell killing compared with double- or single-agent treatment. Taken together, these data suggest the efficacy of agents that target the MAPK and PI3K pathways can be improved by combination with a Bcl-2 family inhibitor. Mol Cancer Ther; 12(6); 853–64. ©2013 AACR.