Structure-Guided Design of Novel <scp>l</scp>-Cysteine Derivatives as Potent KSP Inhibitors
作者:Naohisa Ogo、Yoshinobu Ishikawa、Jun-ichi Sawada、Kenji Matsuno、Akihiro Hashimoto、Akira Asai
DOI:10.1021/acsmedchemlett.5b00221
日期:2015.9.10
previously reported S-trityl-l-cysteine derivatives as selective KSP inhibitors. Here, we report further optimizations using docking modeling in the L5 allosteric binding site, which led to the discovery of several high affinity derivatives with two fused phenyl rings in the trityl group giving low nanomolar range KSP ATPase inhibition. The representative derivatives potently inhibited cell growth of HCT116
驱动蛋白纺锤体蛋白(KSP),称为Hs Eg5,是驱动蛋白5家族的成员,在双极纺锤体的形成和维持中起着重要作用。我们先前报道了S-三苯甲基-1-半胱氨酸衍生物作为选择性KSP抑制剂。在这里,我们报告了在L5变构结合位点使用对接模型的进一步优化,这导致了在三苯甲基中具有两个稠合苯环的几种高亲和力衍生物的发现,从而产生了低纳摩尔范围的KSP ATPase抑制作用。代表性衍生物在体内与KSP抑制活性相关地有效抑制HCT116细胞的细胞生长,并显着抑制肿瘤生长。