Design and Synthesis of 2-Amino-4-methylpyridine Analogues as Inhibitors for Inducible Nitric Oxide Synthase and in Vivo Evaluation of [<sup>18</sup>F]6-(2-Fluoropropyl)-4-methyl-pyridin-2-amine as a Potential PET Tracer for Inducible Nitric Oxide Synthase
作者:Dong Zhou、Hsiaoju Lee、Justin M. Rothfuss、Delphine L. Chen、Datta E. Ponde、Michael J. Welch、Robert H. Mach
DOI:10.1021/jm801556h
日期:2009.4.23
A series of position-6 substituted 2-amino-4-methylpyridine analogues was synthesized and compounds 9, 18, and 20 were identified as the inhibitors with the greatest potential to serve as PET tracers for imaging inducible nitric oxide synthase (iNOS). [18F]9 was synthesized and evaluated in a mouse model of lipopolysaccharide (LPS)-induced iNOS activation. In vivo biodistribution studies of [18F]9
一系列位置-6取代的2-氨基-4-甲基吡啶类似物的合成和化合物9,18,和20被确定为最有潜力抑制剂以用作PET示踪剂成像诱导型一氧化氮合酶(iNOS)。[ 18 F] 9在脂多糖(LPS) 诱导的iNOS 激活的小鼠模型中合成和评估。[ 18 F] 9 的体内生物分布研究表明与对照小鼠相比,LPS 治疗小鼠肺中的示踪剂摄取量更高。在使用已知 iNOS 抑制剂的阻断研究中,注射后 60 分钟的示踪剂摄取减少。iNOS 的表达通过对 LPS 处理小鼠肺样品的蛋白质印迹分析得到证实。MicroPET 研究还表明放射性示踪剂在 LPS 治疗小鼠的肺中积聚。总而言之,这些数据表明[ 18 F] 9作为PET示踪剂显示出有利的特性,以使用PET对iNOS激活进行成像。