同位素 ›› 2010, Vol. 23 ›› Issue (4): 235-241.DOI: 10.7538/tws.2010.23.04.0235

• 放射性药物和标记化合物 • 上一篇    下一篇

苯丙氨酸衍生物的合成、18F标记及其生物学评价

彭程1;马云川1;苏玉盛1;贺勇2;许荆立2;陈玉蓉2;齐传民2   

  1. 1.北京宣武医院 PET中心,北京100053;2.北京师范大学 化学学院,放射药物化学教育部重点实验室,北京100875
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-11-20 发布日期:2010-11-20

Synthesis and Biological Evaluation of 2-amino-3-phenylpropanoic Acid Derivatives Labeled With 18F

PENG Cheng1;MA Yun-chuan1;SU Yu-sheng1;HE Yong2;XU Jing-li2;CHEN Yu-rong2;QI Chuan-min2   

  1. 1.PET Center of Xuanwu Hospital, Beijing 100053, China;2. Key Laboratory of Radiopharmaceutical, College of Chemistry, Beijing Normal University, Beijing 100875, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-11-20 Published:2010-11-20

摘要: 应用正电子核素18F对4-(-2-氟乙氧基)苯甲酰基苯丙氨酸甲酯(Methyl-2-(4-(2-fluoroethoxy) benzamido)-3-phenylpropanoate,MFBPA)及4-(2-氟乙氧基)苯甲酰基苯丙氨酸(2-(4-(2-fluoroethoxy)benzamido) -3-phenylpropanoic Acid,FBPA)进行标记,分别得到18F-MFBPA和18F-FBPA,并初步研究了18F-MFBPA和18F-FBPA的体外、体内稳定性和生物分布。18F-MFBPA的标记率为23%~41%。18F-MFBPA和18F-FBPA经HPLC分析,放化纯度均>99%。分别随机选取20只荷S180瘤昆明小鼠,经尾静脉注射18F-MFBPA或18F-FBPA,计算主要组织中的放射性摄取率,对18F-MFBPA和18F-FBPA与18F-FET和18F-FDG的生物分布进行比较。结果表明,18F-FBPA更具有良好的生物性质,有望成为恶性肿瘤的正电子显像剂。

关键词: 18F, 标记, 苯丙氨酸衍生物, 生物学评价

Abstract: Methyl-2-(4-(2-fluoroethoxy) benzamido)-3-phenylpropanoate (MFBPA) and its hydrolysis product 2-(4-(2-fluoroethoxy)benzamido)-3-phenylpropanoic acid (FBPA) were synthesized and labeled by 18F. To evaluate applicability of 18F-MFBPA and 18F-FBPA in detecting malignant fibrosarcoma, some studies were carried on biodistribution, stabilities in vitro or in vivo and autoradiophotography. After 60 min of intravenous injection the accumulations of 18F-MFBPA and 18F-FBPA in tumor, muscle, blood and brain were 0.78±0.02, 0.72±0.04, 0.66±0.07, 0.38±0.03%ID/g and 0.95±0.05, 0.64±0.06, 0.65±0.04, 0.34±0.01%ID/g, respectively. Their ratios of tumor to muscle, tumor to blood, and tumor to brain were 1.18, 1.08, 2.05 and 1.46 1.48,2.79, respectively. The results indicated that 18F-FBPA might have more potential to be PET imaging agent.

Key words: 18F, labeling, 2-amino-3-phenylpropnoic acid, biological evaluation