Targeting the Polyamine Pathway with Transition-State Analogue Inhibitors of 5‘-Methylthioadenosine Phosphorylase
作者:Gary B. Evans、Richard H. Furneaux、Vern L. Schramm、Vipender Singh、Peter C. Tyler
DOI:10.1021/jm0306475
日期:2004.6.1
synthesized a family of potential transition-state analogue inhibitors of MTAP on the basis of our knowledge of the transition-state structure of purine nucleoside phosphorylase and the assumption that it is likely the two enzymes share a common catalytic mechanism. Several of the inhibitors display slow-onset tight-binding properties, consistent with them being transition-state analogues, with the most potent
多胺生物合成途径是增生性疾病的治疗靶标,因为细胞增殖需要升高水平的多胺。多胺生物合成后期阶段(亚精胺和亚精胺的合成)的副产物是5'-甲基硫代腺苷(MTA)。在人类中,MTA是由5'-甲硫基腺苷磷酸化酶(MTAP)处理的,因此不会积累大量MTA。MTAP的有效抑制剂可能会导致足够水平的MTA积累,从而产生多胺生物合成的反馈抑制作用。我们根据对嘌呤核苷磷酸化酶过渡态结构的了解,并假设这两种酶可能具有相同的催化机制,设计并合成了一系列MTAP潜在的过渡态类似物抑制剂。