Benzoxazinone-containing 3,5-dimethylisoxazole derivatives as BET bromodomain inhibitors for treatment of castration-resistant prostate cancer
作者:Xiaoqian Xue、Yan Zhang、Chao Wang、Maofeng Zhang、Qiuping Xiang、Junjian Wang、Anhui Wang、Chenchang Li、Cheng Zhang、Lingjiao Zou、Rui Wang、Shuang Wu、Yongzhi Lu、Hongwu Chen、Ke Ding、Guohui Li、Yong Xu
DOI:10.1016/j.ejmech.2018.04.034
日期:2018.5
The bromodomain and extra-terminal proteins (BET) have emerged as promising therapeutic targets for the treatment of castration-resistant prostate cancer (CRPC). We report the design, synthesis and evaluation of a new series of benzoxazinone-containing 3,5-dimethylisoxazole derivatives as selective BET inhibitors. One of the new compounds, (R)-12 (Y02234), binds to BRD4(1) with a Kd value of 110 nM
溴结构域和末端外蛋白(BET)已成为治疗去势抵抗性前列腺癌(CRPC)的有希望的治疗靶标。我们报告设计,合成和评估的一系列新的含苯并恶嗪酮的3,5-二甲基异恶唑衍生物作为选择性BET抑制剂。一种新化合物(R)-12(Y02234)以Kd值为110 nM结合BRD4(1),并以100 nM的IC50值阻断溴结构域和乙酰赖氨酸的相互作用。它也对非BET溴结构域蛋白表现出BET选择性,并在诸如22Rv1和C4-2B的前列腺癌细胞系中显示出合理的抗增殖和集落形成抑制作用。BRD4抑制剂(R)-12还可以在前列腺癌细胞的mRNA水平上显着抑制ERG,Myc和AR目标基因PSA的表达。(R)-12处理可在22Rv1衍生的异种移植模型中显着抑制前列腺癌的肿瘤生长(TGI = 70%)。这些数据表明化合物(R)-12是用于开发用于治疗CRPC的新型疗法的有前途的先导化合物。