Synthesis of A83586C Analogs with Potent Anticancer and β-Catenin/ TCF4/Osteopontin Inhibitory Effects and Insights Into How A83586C Modulates E2Fs and pRb
作者:Karl J. Hale、Soraya Manaviazar、Linos Lazarides、Jonathan George、Marcus A. Walters、Jiaqiang Cai、Vern M. Delisser、Gurpreet S. Bhatia、S. Andrew Peak、Stephen M. Dalby、Amandine Lefranc、Ying-Nan P. Chen、Alexander W. Wood、Paul Crowe、Pauline Erwin、Mohamed El-Tanani
DOI:10.1021/ol802818f
日期:2009.2.5
The synthesis of three potent new antitumor agents is described: the A83586C-citropeptin hybrid (1), the A83586C-GE3 hybrid (2), and L-Pro-A83586C (3). Significantly, compounds 1 and 2 function as highly potent inhibitors of beta-catenin/TCF4 signaling within cancer cells, while simultaneously downregulating osteopontin (Opn) expression. A83586C antitumor cyclodepsipeptides also inhibit E2F-mediated transcription by downregulating E2F1 expression and inducing dephosphorylation of the oncogenic hyperphosphorylated retinoblastoma protein (pRb).