Structure-Guided Development of Deoxycytidine Kinase Inhibitors with Nanomolar Affinity and Improved Metabolic Stability
作者:Julian Nomme、Zheng Li、Raymond M. Gipson、Jue Wang、Amanda L. Armijo、Thuc Le、Soumya Poddar、Tony Smith、Bernard D. Santarsiero、Hien-Anh Nguyen、Johannes Czernin、Anastassia N. Alexandrova、Michael E. Jung、Caius G. Radu、Arnon Lavie
DOI:10.1021/jm501124j
日期:2014.11.26
cells in animal models. However, our previous lead compound had a short half-life in vivo. Therefore, we set out to develop dCK inhibitors with favorable pharmacokinetic properties. We delineated the sites of the inhibitor for modification, guided by crystal structures of dCK in complex with the lead compound and with derivatives. Crystal structure of the complex between dCK and the racemic mixture of our
最近,我们已经证明小分子 dCK 抑制剂与 de novo dNTP 生物合成途径的药理学扰动相结合可以消除动物模型中的急性淋巴细胞白血病细胞。然而,我们之前的先导化合物在体内的半衰期很短。因此,我们着手开发具有良好药代动力学特性的 dCK 抑制剂。我们在与先导化合物和衍生物复合的 dCK 晶体结构的指导下,描绘了抑制剂的修饰位点。dCK 与我们的新先导化合物的外消旋混合物之间的复合物的晶体结构表明R异构体负责激酶抑制。纯化对映异构体的动力学分析证实了这一点,这表明R-异构体对 dCK 的亲和力比S -异构体高 60 倍以上。这种新的先导化合物显着改善了代谢稳定性,使其成为基于 dCK 抑制剂治疗血液系统恶性肿瘤和其他潜在癌症的主要候选药物。