Preclinical Evaluation of the First Adenosine A<sub>1</sub> Receptor Partial Agonist Radioligand for Positron Emission Tomography Imaging
作者:Min Guo、Zhan-Guo Gao、Ryan Tyler、Tyler Stodden、Yang Li、Joseph Ramsey、Wen-Jing Zhao、Gene-Jack Wang、Corinde E. Wiers、Joanna S. Fowler、Kenner C. Rice、Kenneth A. Jacobson、Sung Won Kim、Nora D. Volkow
DOI:10.1021/acs.jmedchem.8b01009
日期:2018.11.21
Central adenosine A1 receptor (A1R) is implicated in pain, sleep, substance use disorders, and neurodegenerative diseases, and is an important target for pharmaceutical development. Radiotracers for A1R positron emission tomography (PET) would enable measurement of the dynamic interaction of endogenous adenosine and A1R during the sleep–awake cycle. Although several human A1R PET tracers have been
中枢腺苷 A 1受体 (A 1 R) 与疼痛、睡眠、物质使用障碍和神经退行性疾病有关,是药物开发的重要目标。用于 A 1 R 正电子发射断层扫描 (PET) 的放射性示踪剂将能够测量睡眠-觉醒周期中内源性腺苷和 A 1 R的动态相互作用。尽管已经开发了几种人类 A 1 R PET 示踪剂,但大多数是基于黄嘌呤的拮抗剂,无法证明与内源性腺苷的竞争性结合。在此,我们探索了用于开发激动剂 A 1 的非核苷(3,5-二氰基吡啶和 5-氰基嘧啶)模板R PET 放射性示踪剂。我们合成了新的类似物,包括 2-amino-4-(3-methoxyphenyl)-6-(2-(6-methylpyridin-2-yl)ethyl)pyridine-3,5-dicarbonitrile (MMPD, 22b ),部分 A 1 R 亚纳摩尔亲和力的激动剂。[ 11 C] 22b显示出合适的血脑屏障 (BBB)