MDM2 and XIAP are mutually regulated. Binding of MDM2 RING protein to the IRES region on XIAP mRNA results in MDM2 protein stabilization and enhanced XIAP translation. In this study, we developed a protein-RNA fluorescence polarization (FP) assay for high-throughput screening (HTS) of chemical libraries. Our FP-HTS identified eight inhibitors that blocked the MDM2 protein XIAP RNA interaction, leading to MDM2 degradation. The compound-induced MDM2 downregulation resulted not only in inhibition of XIAP expression, but also in activation of p53, which contributed to cancer cell apoptosis in vitro and inhibition of cancer cell proliferation in vivo. Importantly, one of the MDM2/XIAP inhibitors, MX69, showed minimal inhibitory effect on normal human hematopoiesis in vitro and was very well tolerated in animal models.
基金：
Hyundai Hope On Wheels [79387GA]; St. Baldrick's Foundation [422224]; CURE Childhood Cancer; National Natural Science Foundation of China [81472488]; [CA180519]; [CA123490]; [CA143107]; [CA168449]
第一作者单位：[1]Emory Univ, Sch Med, Aflac Canc & Blood Disorders Ctr, Div Hematol Oncol,Dept Pediat, 1760 Haygood Dr, Atlanta, GA 30322 USA
通讯作者：
推荐引用方式(GB/T 7714)：
Gu Lubing,Zhang Hailong,Liu Tao,et al.Discovery of Dual Inhibitors of MDM2 and XIAP for Cancer Treatment[J].CANCER CELL.2016,30(4):623-636.doi:10.1016/j.ccell.2016.08.015.
APA：
Gu, Lubing,Zhang, Hailong,Liu, Tao,Zhou, Sheng,Du, Yuhong...&Zhou, Muxiang.(2016).Discovery of Dual Inhibitors of MDM2 and XIAP for Cancer Treatment.CANCER CELL,30,(4)
MLA：
Gu, Lubing,et al."Discovery of Dual Inhibitors of MDM2 and XIAP for Cancer Treatment".CANCER CELL 30..4(2016):623-636
医学