Target Hopping as a Useful Tool for the Identification of Novel EphA2 Protein-Protein Antagonists
作者:Massimiliano Tognolini、Matteo Incerti、Daniele Pala、Simonetta Russo、Riccardo Castelli、Iftiin Hassan-Mohamed、Carmine Giorgio、Alessio Lodola
DOI:10.1002/cmdc.201300305
日期:2014.1
ability to inhibit EphA2 by targeting the EphA2‐ephrin‐A1 interface. Among the selected compounds, the stilbene carboxylic acid GW4064 was identified as an effective antagonist of EphA2, being able to block EphA2 activation in prostate carcinoma cells, in the micromolar range. This finding proposes the “target hopping” approach as a new effective strategy to discover new protein–protein interaction inhibitors
近年来,人们已经描述了胆酸(LCA),它是核受体FXR和G蛋白偶联受体TGR5的生理配体,它是EphA2受体的拮抗剂,EphA2受体是参与肿瘤生长的ephrin信号系统的关键成员。考虑到LCA能够识别FXR,TGR5和EphA2受体的能力,我们假设小分子结合每种受体的结构要求可能相似。因此,我们选择了一组市售的FXR或TGR5配体,并测试了它们通过靶向EphA2-ephrin-A1接口抑制EphA2的能力。在选定的化合物中,二苯乙烯羧酸GW4064被确定为EphA2的有效拮抗剂,能够在微摩尔范围内阻断前列腺癌细胞中的EphA2活化。