Synthesis and in vitro characterization of ionone-based compounds as dual inhibitors of the androgen receptor and NF-κB
作者:Weiguo Liu、Jinming Zhou、Guoyan Geng、Rongtuan Lin、Jian Hui Wu
DOI:10.1007/s10637-013-0040-y
日期:2014.4
Current therapeutic strategy for advanced prostate cancer is to suppress the androgen receptor (AR) signaling. However, lethal castration-resistant prostate cancer (CRPC) arises due to AR reactivation via multiple mechanisms, including mutations in the AR and cross-talk with other pathways such as NF-κB. We have previously identified two ionone-based antiandrogens (SC97 and SC245), which are full antagonists of the wild type and the clinically-relevant T877A, W741C and H874Y mutated ARs. Here, we discovered SC97 and SC245 also inhibit NF-κB. By synthesizing a series of derivatives of these two compounds, we have discovered a novel compound 3b that potently inhibits both AR and NF-κB signalling, including the AR F876L mutant. Compound 3b showed low micromolar antiproliferative activites in C4-2B and 22Rv1 cells, which express mutated ARs and are androgen-independent, as well as DU-145 and PC-3 cells, which exhibit constitutively activated NF-κB signalling. Our studies indicate 3b is effective against the CRPC cells.
目前晚期前列腺癌的治疗策略是抑制雄激素受体(AR)信号通路。然而,由于AR通过多种机制的再激活,包括AR的突变和与其他通路如NF-κB的交叉作用,致命的去势抵抗性前列腺癌(CRPC)应运而生。我们之前已识别出两种基于伊诺烯的抗雄激素(SC97和SC245),它们是野生型和临床相关的T877A、W741C和H874Y突变AR的完全拮抗剂。在这里,我们发现SC97和SC245也能抑制NF-κB。通过合成这两种化合物的一系列衍生物,我们发现了一种新化合物3b,能够有效抑制AR和NF-κB信号,包括AR F876L突变体。化合物3b在表达突变AR并具雄激素独立性的C4-2B和22Rv1细胞,以及表现为持续激活的NF-κB信号的DU-145和PC-3细胞中显示出低微摩尔的抗增殖活性。我们的研究表明3b对CRPC细胞有效。