Design and synthesis of fluorescent ligands for the detection of cannabinoid type 2 receptor (CB2R)
作者:Francesco Spinelli、Roberta Giampietro、Angela Stefanachi、Chiara Riganti、Joanna Kopecka、Francesca Serena Abatematteo、Francesco Leonetti、Nicola Antonio Colabufo、Giuseppe Felice Mangiatordi、Orazio Nicolotti、Maria Grazia Perrone、José Brea、María Isabel Loza、Vittoria Infantino、Carmen Abate、Marialessandra Contino
DOI:10.1016/j.ejmech.2020.112037
日期:2020.2
of reliable diagnostic tools. With the aim to produce green and safe systems to detect CB2R, we designed a series of fluorescent ligands with three different green fluorescent moieties (4-dimethylaminophthalimide, 4-DMAP, 7-nitro-4-yl-aminobenzoxadiazole, NBD, and Fluorescein-thiourea, FTU) linked to the N1-position of the CB2R pharmacophore N-adamantyl-4-oxo-1,4-dihydroquinoline-3-carboxamide through
属于内源性大麻素系统ECS的大麻素2受体CB2R参与神经变性和癌症进化与进展的第一步,因此可在治疗和诊断领域中利用其调节作用。然而,由于缺乏可靠的诊断工具,在生理和病理条件下CB2Rs的分布和信号通路仍存在争议。为了产生一种绿色安全的系统来检测CB2R,我们设计了一系列具有三个不同绿色荧光部分(4-二甲基氨基邻苯二甲酰亚胺,4-DMAP,7-硝基-4-基-氨基苯并二唑,NBD和荧光素-硫脲(FTU)通过聚亚甲基链连接到CB2R药效团N-金刚烷基-4-氧代-1,4-二氢喹啉-3-羧酰胺的N1位。化合物28的出现是因为它在良好的药效学性质(CB2R Ki = 130 nM,与其他CB1R亚型之间没有亲和力)和最佳荧光光谱性质之间折衷。因此,通过FACS(饱和和竞争结合研究)和荧光显微镜(可视化和竞争结合)在工程细胞(CB2R-HEK293细胞)和多种肿瘤细胞中研究了化合物28。成功建立了氟配体