Design, Synthesis, and In Vitro Testing of α-Methylacyl-CoA Racemase Inhibitors
作者:Andrew J. Carnell、Ian Hale、Simone Denis、Ronald J. A. Wanders、William B. Isaacs、Brice A. Wilson、Sacha Ferdinandusse
DOI:10.1021/jm0702377
日期:2007.5.1
The enzyme alpha-methylacyl-CoA racemase (AMACR) is overexpressed in prostate, colon, and other cancers and has been partially validated as a potential therapeutic target by siRNA knockdown of the AMACR gene. Analogs of the natural substrate branched chain alpha-methylacyl coenzyme A esters, possessing one or more beta-fluorine atoms, have been synthesized using Wittig, conjugate addition, and asymmetric aldol reactions and found to be reversible competitive inhibitors. Each diastereomer of the previously reported inhibitor ibuprofenoyl-CoA was also tested. The compounds had K-i values of 0.9-20 mu M and are the most potent inhibitors yet known. The presence of beta-fluorine on the alpha-methyl group or the acyl chain results in a significant lowering of the K-i value compared with nonfluorinated analogs, and this is attributed to a lowering of the pK(a) of the alpha-proton, facilitating enolization and binding. Several of the CoA ester inhibitors were formed by incubating the free carboxylic acid precursors with cell free extracts and CoA. alpha-Trifluoromethyltetradecanoic acid, the precursor to the most potent inhibitor, was shown to inhibit growth of cancer cell lines PC3, CWR22 Rv1, and Du145 in a dose-dependent manner and could be related to the expression level of AMACR.
US6383274B1
申请人:——
公开号:US6383274B1
公开(公告)日:2002-05-07
New Molecular Markers for Prostate Tumor Imaging: A Study on 2-Methylene Substituted Fatty Acids as New AMACR Inhibitors
作者:Agnieszka Morgenroth、Elizaveta A. Urusova、Cornelia Dinger、Ehab Al-Momani、Thomas Kull、Gerhard Glatting、Holm Frauendorf、Olaf Jahn、Felix M. Mottaghy、Sven N. Reske、Boris D. Zlatopolskiy
DOI:10.1002/chem.201003176
日期:2011.8.29
expressed in prostate (more than 95 %), colon (92 %), and breast cancers (44 %) but not in the respective normal or hyperplastic tissues. Thus, targeting of AMACR could be a new strategy for molecular imaging and therapy of prostate and some other cancers. Unlabeled 2‐methylenacyl‐CoA thioesters (12 a–c) were designed as AMACR binding ligands. The thioesters were tested for their ability to inhibit the AMACR‐mediated
前列腺癌的发展与脂肪酸代谢的改变有关。α-甲基酰基辅酶A外消旋酶(AMACR)是一种过氧化物酶体和线粒体酶,催化一系列α-甲基酰基辅酶A硫酯的(S)/(R)异构体之间的相互转化。AMACR参与膳食支链脂肪酸和胆汁酸中间体的β-氧化。它在前列腺(95%以上),结肠(92%)和乳腺癌(44%)中高表达,但在相应的正常或增生组织中却没有高表达。因此,针对AMACR的靶向可能是前列腺癌和其他一些癌症的分子成像和治疗的新策略。未标记的2-亚甲基酰基-CoA硫酯(12 a – c)被设计为AMACR结合配体。测试了硫酯抑制(25 R)-THC-CoA的AMACR介导的差向异构化的能力,发现它们是强AMACR抑制剂。放射性碘(E)131 I-13碘-2-甲基对苯二甲酸12烯酸(131 I- 7 c)与AMACR阳性前列腺肿瘤细胞(LNCaP,LNCaP C4-2wt和DU145)相比均具有优先保留AMACR基因敲除LNCaP