Synthesis, evaluation and structural investigations of potent purple acid phosphatase inhibitors as drug leads for osteoporosis
作者:Daniel Feder、Meng-Wei Kan、Waleed M. Hussein、Luke W. Guddat、Gerhard Schenk、Ross P. McGeary
DOI:10.1016/j.ejmech.2019.111611
日期:2019.11
onic acid derivatives have been identified previously as molecules that bind with high affinity to PAPs, and docking studies suggest that longer alkyl chains may increase the binding affinities of such compounds. Here, we synthesized several derivatives and tested their inhibitory effect against pig and red kidney bean PAPs. The most potent inhibitor within this series is the octadecyl derivative,
紫色酸性磷酸酶(PAP)是双核水解酶,可在酸性至中性条件下催化磷酸化底物的水解。在患有骨质疏松症的患者中观察到PAP的血清浓度升高,从而将该酶确定为开发治疗该疾病的新型治疗剂的潜在靶标。先前已将α-烷氧基取代的萘基甲基膦酸衍生物鉴定为对PAP具有高亲和力的分子,对接研究表明,更长的烷基链可提高此类化合物的结合亲和力。在这里,我们合成了几种衍生物,并测试了它们对猪和红芸豆PAP的抑制作用。该系列中最有效的抑制剂是十八烷基衍生物,其Ki值为〜200 nM。与红芸豆PAP结合的十二烷基和十八烷基衍生物的晶体结构表明,烷基链的长度影响膦酸酯基团直接与双金属中心相互作用的能力。这些结构代表了与PAP结合并具有类似药物特性的强效抑制剂的第一个实例。这项研究为开发急需的骨质疏松症新疗法提供了起点。