Identification and Profiling of a Selective and Brain Penetrant Radioligand for in Vivo Target Occupancy Measurement of Casein Kinase 1 (CK1) Inhibitors
作者:Travis T. Wager、Paul Galatsis、Ramalakshmi Y. Chandrasekaran、Todd W. Butler、Jianke Li、Lei Zhang、Scot Mente、Chakrapani Subramanyam、Shenping Liu、Angela C. Doran、Cheng Chang、Katherine Fisher、Sarah Grimwood、Joseph R. Hedde、Michael Marconi、Klaas Schildknegt
DOI:10.1021/acschemneuro.7b00155
日期:2017.9.20
To enable the clinical development of our CNS casein kinase 1 delta/epsilon (CK1δ/ε) inhibitor project, we investigated the possibility of developing a CNS positron emission tomography (PET) radioligand. For this effort, we focused our design and synthesis efforts on the initial CK1δ/ε inhibitor HTS hits with the goal of identifying a compound that would fulfill a set of recommended PET ligand criteria
为使我们的中枢神经系统酪蛋白激酶1δ/ε(CK1δ/ε)抑制剂项目的临床开发成为可能,我们调查了开发中枢神经系统正电子发射断层显像(PET)放射性配体的可能性。为此,我们将设计和合成工作重点放在了最初的CK1δ/ε抑制剂HTS命中上,目的是鉴定出能够满足一系列推荐PET配体标准的化合物。我们确定[ 3 H] PF-5236216(9)为满足大多数关键CNS PET属性的工具配体,包括高CNS MPO PET期望值和激酶选择性,CNS渗透和低非特异性结合。我们还使用了[ 3 H] -9以确定与文献CK1δ/ε抑制剂工具化合物PF-670462的结合亲和力。最后,[ 3 H] -9用于测量小鼠中PF-670462的体内靶标占有率(TO),并将其与CK1δ/ε体内药理作用相关联(昼夜节律调节)。