Inhibition of trypanosome alternative oxidase without its N-terminal mitochondrial targeting signal (ΔMTS-TAO) by cationic and non-cationic 4-hydroxybenzoate and 4-alkoxybenzaldehyde derivatives active against T. brucei and T. congolense
作者:Godwin U. Ebiloma、Teresa Díaz Ayuga、Emmanuel O. Balogun、Lucía Abad Gil、Anne Donachie、Marcel Kaiser、Tomás Herraiz、Daniel K. Inaoka、Tomoo Shiba、Shigeharu Harada、Kiyoshi Kita、Harry P. de Koning、Christophe Dardonville
DOI:10.1016/j.ejmech.2018.02.075
日期:2018.4
acid mitochondrial targeting sequence (ΔMTS-TAO). A new class of 32 cationic and non-cationic 4-hydroxybenzoate and 4-alkoxybenzaldehyde inhibitors was designed and synthesized, enabling the first structure-activity relationship studies on ΔMTS-TAO. Remarkably, we obtained compounds with enzyme inhibition values (IC50) as low as 2 nM, which were efficacious against wild type and multidrug-resistant
非洲锥虫病是一种被忽视的寄生虫病,仍然与公共卫生息息相关,在流行地区严重阻碍了农业发展。病原体具有某些独特的代谢特征,可用于开发新药。值得注意的是,它们依赖必需的线粒体定位酶锥虫替代氧化酶(TAO)进行能量代谢,哺乳动物宿主中不存在这种酶,因此是设计安全药物的有吸引力的靶标。在这项研究中,我们克隆,表达和纯化了TAO的生理相关形式,它缺乏N端25个氨基酸的线粒体靶向序列(ΔMTS-TAO)。设计并合成了一类新的32种阳离子和非阳离子的4-羟基苯甲酸酯和4-烷氧基苯甲醛抑制剂,首次对ΔMTS-TAO进行构效关系研究。值得注意的是,我们获得了具有酶抑制值的化合物(IC50)低至2nM的,这是对野生型和多药耐药性的菌株有效的布氏锥虫和T. congolense。抑制剂13,15,16,19,和30,设计成与线粒体靶向亲脂性阳离子尾,显示相媲美的参考药物喷他脒和diminazene杀锥虫效力,并显