Design of Gallinamide A Analogs as Potent Inhibitors of the Cysteine Proteases Human Cathepsin L and <i>Trypanosoma cruzi</i> Cruzain
作者:Paul D. Boudreau、Bailey W. Miller、Laura-Isobel McCall、Jehad Almaliti、Raphael Reher、Ken Hirata、Thu Le、Jair L. Siqueira-Neto、Vivian Hook、William H. Gerwick
DOI:10.1021/acs.jmedchem.9b00294
日期:2019.10.24
reisolated and characterized as a potent, selective, and irreversible inhibitor of the human cysteine protease cathepsin L. Molecular docking identified potential modifications to improve binding, which were synthesized as a suite of analogs. Resultingly, this current study produced the most potent gallinamide analog yet tested against cathepsin L (10, Ki = 0.0937 ± 0.01 nM and kinact/Ki = 8 730 000). From a
最初分离出具有适度抗疟疾活性的Gallinamide A,随后被重新分离,并表征为人半胱氨酸蛋白酶组织蛋白酶L的强效,选择性和不可逆抑制剂。分子对接鉴定出潜在的修饰以改善结合,将其合成为一组类似物。结果,该当前研究产生了针对组织蛋白酶L进行测试的最有效的没食子酰胺类似物(10,Ki = 0.0937±0.01 nM和kinact / Ki = 8 730 000)。从蛋白质结构和底物偏爱的角度来看,克鲁萨因是一种必需的锥虫克鲁兹半胱氨酸蛋白酶,具有高度同源性。我们的研究表明,没食子酰胺及其类似物在细胞内的鞭毛虫阶段中有效抑制克鲁萨因并对克鲁维氏酵母具有极强的毒性。活性最高的化合物5的IC50 = 5.1±1。