Design, Radiosynthesis and Preliminary Biological Evaluation in Mice of a Brain-Penetrant 18F-Labelled σ2 Receptor Ligand
作者:Rareş-Petru Moldovan、Daniel Gündel、Rodrigo Teodoro、Friedrich-Alexander Ludwig、Steffen Fischer、Magali Toussaint、Dirk Schepmann、Bernhard Wünsch、Peter Brust、Winnie Deuther-Conrad
DOI:10.3390/ijms22115447
日期:——
3-b]pyridin-1-yl)butyl]-6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline) was selected for labelling with 18F and evaluation regarding detection of σ2 receptors in the brain by positron emission tomography. Initial metabolism and biodistribution studies of [18F]RM273 in healthy mice revealed promising penetration of the radioligand into the brain. Preliminary in vitro autoradiography on brain cryosections of an
所述σ 2受体(跨膜蛋白97),其涉及胆固醇体内平衡,为高肿瘤形成过程的相关性。的σ表达上调2受体在癌症细胞和组织结合的σ的抗增殖效力2个受体配体激励在σ领域的研究2受体的诊断和不同类型的癌症的治疗。从众所周知的2-(4-(1 H-吲哚-1-基)丁基)-6,7-二甲氧基-1,2,3,4-四氢异喹啉类化合物开始,我们合成了一系列新颖的氟化衍生物在芳族吲哚/氮杂吲哚亚基上带有F原子。RM273(2- [4-(6-氟-1 H吡咯并[2,3-b]吡啶-1-基)丁基] -6,7-二甲氧基-1,2,3,4-四氢异喹啉)被选定为与标记18 σ的F和评估关于检测2个在受体通过正电子发射断层扫描术检查大脑。[ 18 F] RM273在健康小鼠中的初步代谢和生物分布研究表明,放射性配体可渗透到大脑中。上原位大鼠成胶质细胞瘤模型的脑的冷冻切片的初步体外放射自显影证明放射性配体的潜力,以检测的σ上调2受体在成胶质