Development of LC-MS/MS-Based Receptor Occupancy Tracers and Positron Emission Tomography Radioligands for the Nociceptin/Orphanin FQ (NOP) Receptor
作者:Concepción Pedregal、Elizabeth M. Joshi、Miguel A. Toledo、Celia Lafuente、Nuria Diaz、Maria A. Martinez-Grau、Alma Jiménez、Ana Benito、Antonio Navarro、Zhaogen Chen、Daniel R. Mudra、Steven D. Kahl、Karen S. Rash、Michael A. Statnick、Vanessa N. Barth
DOI:10.1021/jm201629q
日期:2012.6.14
understanding of the relationship between neuropsychiatric disorders and the nociceptin/orphanin FQ (N/OFQ) peptide (NOP) receptor. Herein, we describe the discovery and development of an antagonist NOP receptor occupancy (RO) tracer and a novel positron emission tomography (PET) radioligand suitable to probe the NOP receptor in human clinical studies. A thorough structure–activity relationship (SAR) around
当前,缺乏足够的工具限制了对神经精神疾病与伤害感受素/孤儿啡FQ(N / OFQ)肽(NOP)受体之间关系的理解。在本文中,我们描述了拮抗剂NOP受体占有率(RO)示踪剂和适合在人类临床研究中探测NOP受体的新型正电子发射断层扫描(PET)放射性配体的发现和发展。高亲和力3-(2'-氟-4',5'-二氢螺[哌啶-4,7'-噻吩并[2,3- c ]吡喃] -1-周围的结构-活性关系(SAR)yl)-2-(2-卤代苄基)-N-烷基丙酰胺支架鉴定了一系列亚纳摩尔的高选择性NOP拮抗剂。随后,在大鼠体内通过液相色谱-串联质谱法(LC-MS / MS)对这些未标记的NOP配体进行了体内评估,以确定脑摄取,动力学和特异性结合。(S)-27被确定为合适的未标记临床前RO示踪剂,可准确定量大鼠脑中NOP受体的参与。选择了三种化合物在非人类灵长类动物中作为PET示踪剂进行评估:(-)- 26,(-)- 30和(-)-