2-Aminothiazole Derivatives as Selective Allosteric Modulators of the Protein Kinase CK2. 2. Structure-Based Optimization and Investigation of Effects Specific to the Allosteric Mode of Action
作者:Benoît Bestgen、Irina Kufareva、Weiguang Seetoh、Chris Abell、Rolf W. Hartmann、Ruben Abagyan、Marc Le Borgne、Odile Filhol、Claude Cochet、Thierry Lomberget、Matthias Engel
DOI:10.1021/acs.jmedchem.8b01765
日期:2019.2.28
Protein CK2 has gained much interest as an anticancer drug target in the past decade. We had previously described the identification of a new allosteric site on the catalytic α-subunit, along with first small molecule ligands based on the 4-(4-phenylthiazol-2-ylamino)benzoic acid scaffold. In the present work, structure optimizations guided by a binding model led to the identification of the lead compound
在过去的十年中,蛋白CK2作为抗癌药物已引起了广泛的关注。先前我们已经描述了催化α-亚基上新的变构位点的识别,以及基于4-(4-苯基噻唑-2-基氨基)苯甲酸支架的第一个小分子配体的鉴定。在目前的工作中,以结合模型为指导的结构优化导致了铅化合物2-羟基-4-((4-(萘-2-基)噻唑-2-基)氨基)苯甲酸的鉴定(27) ,显示了对纯化的CK2α的亚微摩尔效价(IC50 = 0.6μM)。此外,与ATP竞争性候选药物CX-4945相比,27种诱导786-O肾细胞癌细胞的凋亡和细胞死亡(EC50 = 5μM)甚至更有效地抑制STAT3激活(EC50为1.6μM对5.3μM)。尤其,我们的变构配体抑制CK2的能力因各个底物而异。总之,新的变构口袋被证明是可药物治疗的部位,为开发有效和选择性的变构CK2抑制剂提供了绝佳的前景。