Discovery of Evodiamine Derivatives as Highly Selective PDE5 Inhibitors Targeting a Unique Allosteric Pocket
作者:Tianhua Zhang、Zengwei Lai、Suying Yuan、Yi-You Huang、Guoqiang Dong、Chunquan Sheng、Hengming Ke、Hai-Bin Luo
DOI:10.1021/acs.jmedchem.0c00983
日期:2020.9.10
Clinical use of phosphodiesterase-5 (PDE5) inhibitors is limited by several side effects due to weak isoform selectivity. Herein, a unique allosteric pocket of PDE5 is identified by molecular modeling and structural biology, which enables the discovery of highly selective PDE5 inhibitors from natural product evodiamine (EVO). The crystal structure of PDE5 with bound EVO derivative (S)-7e revealed that
由于弱的同工型选择性,磷酸二酯酶5(PDE5)抑制剂的临床应用受到多种副作用的限制。本文中,通过分子建模和结构生物学鉴定了PDE5的独特变构口袋,这使得能够从天然产物evodiamine(EVO)中发现高选择性PDE5抑制剂。PDE5的与结合EVO衍生物的晶体结构(小号)-7e揭示的结合(小号)-7e新颖的变构口袋诱导了H环的显着构象变化,其Cα原子最大移动了24Å。这种运动直接阻止了底物/抑制剂与PDE5活性位点的结合,这与所有传统PDE5抑制剂(如昔多芬,他达拉非和伐地那非)不同。这些衍生物显示出超过PDE6C和PDE11A 570倍的选择性,并在体内有效治疗肺动脉高压方面达到了有效的功效。