Fluorine-18 labeled diphenyl sulfide derivatives for imaging serotonin transporter (SERT) in the brain
作者:Yan Zhang、Futao Liu、Hao Xiao、Xinyue Yao、Genxun Li、Seok Rye Choi、Karl Ploessl、Zhihao Zha、Lin Zhu、Hank F. Kung
DOI:10.1016/j.nucmedbio.2018.06.008
日期:2018.11
(PET) and single photon emission tomography (SPECT) imaging agents targeting SERT may be useful for studying its function and providing a tool for monitoring drug treatment. METHODS A series of novel 18F-labeled diphenyl sulfide derivatives were prepared and tested for their binding affinity. Among them, 2-((2-((dimethylamino)-methyl)-4-(2-(2-fluoroethoxy)ethoxy)phenyl)thio)aniline, 1, which showed excellent
目的血清素转运蛋白(SERT)在控制突触间隙中的血清素浓度和控制突触后信号转导中起重要作用。SERT结合的抑制剂是众所周知的选择性5-羟色胺再摄取抑制剂(SSRI),例如氟西汀,舍曲林,帕罗西汀和依他普仑,它们是常用的抗抑郁药。针对SERT的正电子发射断层扫描(PET)和单光子发射断层扫描(SPECT)成像剂可能对研究其功能和提供监测药物治疗的工具很有用。方法制备了一系列新型的18F标记的二苯硫醚衍生物,并测试了它们的结合亲和力。其中2-((2-((二甲基氨基)-甲基)-4-(2-(2-氟乙氧基)乙氧基)苯基)硫基)苯胺,1,选择对大脑中的血清素转运蛋白(SERT)具有极好的结合(Ki = 0.09 nM)的蛋白进行进一步评估。活性OTs中间体7用[18F] F- / K222处理,可一步一步以高放射化学产率提供[18F] 1。通过生物分布研究和动物PET成像研究在大鼠中评估了这种新型SE