Benzyl [<sup>11</sup>C]Hippurate as an Agent for Measuring the Activities of Organic Anion Transporter 3 in the Brain and Multidrug Resistance-Associated Protein 4 in the Heart of Mice
作者:Tatsuya Kikuchi、Toshimitsu Okamura、Maki Okada、Masanao Ogawa、Chie Suzuki、Hidekatsu Wakizaka、Joji Yui、Toshimitsu Fukumura、Antony D. Gee、Ming-Rong Zhang
DOI:10.1021/acs.jmedchem.6b00454
日期:2016.6.23
Multidrug resistance-associated protein 4 (MRP4) and organic anion transporter 3 (OAT3) mediate the efflux of organic anions from the brain and heart. In this study, we have developed a probe for estimating the activity of these transporters in these tissues using positron emission tomography. Several 11C-labeled hippuric acid ester derivatives were screened with the expectation that they would be
多药耐药相关蛋白4(MRP4)和有机阴离子转运蛋白3(OAT3)介导有机阴离子从大脑和心脏流出。在这项研究中,我们已经开发出了一种探针,用于使用正电子发射断层扫描技术估计这些组织中这些转运蛋白的活性。筛选了几种11 C标记的马尿酸酯衍生物,期望它们会在目标组织中原位水解形成相应的11 C标记的有机酸。在所筛选的化合物中,[ 11 C]马尿酸苄酯在小鼠的目标组织中显示出良好的水解速率和摄取特性。随后使用转运蛋白敲除小鼠进行的评估显示,Oat3的大脑和心脏保留了放射性。– / –和Mrp4 – / –小鼠分别与静脉注射苄基[ 11 C]马尿酸酯后与对照组相比。因此,[ 11 C]马尿酸苄酯可用作分别评估小鼠脑和心脏中OAT3和MRP4活性的探针。