Discovery of Phosphodiesterase 10A (PDE10A) PET Tracer AMG 580 to Support Clinical Studies
作者:Essa Hu、Ning Chen、Roxanne K. Kunz、Dah-Ren Hwang、Klaus Michelsen、Carl Davis、Ji Ma、Jianxia Shi、Dianna Lester-Zeiner、Randall Hungate、James Treanor、Hang Chen、Jennifer R. Allen
DOI:10.1021/acsmedchemlett.6b00185
日期:2016.7.14
We report the discovery of PDE10A PET tracer AMG 580 developed to support proof of concept studies with PDE10A inhibitors in the clinic. To find a tracer with higher binding potential (BPND) in NHP than our previously reported tracer 1, we implemented a surface plasmon resonance assay to measure the binding off-rate to identify candidates with slower washout rate in vivo. Five candidates (2-6) from
我们报告发现了PDE10A PET示踪剂AMG 580的发现,该示踪剂是为支持PDE10A抑制剂在临床上的概念研究而开发的。为了在NHP中找到比我们先前报道的示踪剂1具有更高结合潜能(BPND)的示踪剂,我们实施了表面等离振子共振测定法来测量结合解离速率,以鉴定体内洗脱速度较慢的候选物。从两个结构不同的支架中鉴定出五个候选物(2-6),它们具有有利于中心渗透的体外特征和PET同位素放射性标记所必需的结构特征。在SD大鼠体内LC-MS / MS动力学分布研究中,两种cinnolines(2,3)和一种keto-benzimidazole(5)表现出PDE10A目标特异性,并且其脑摄取与1相当或更好。在NHP PET成像研究中,