Chem. J. Chinese Universities ›› 2014, Vol. 35 ›› Issue (4): 724.doi: 10.7503/cjcu20130718

• Articles: Inorganic Chemistry • Previous Articles     Next Articles

Radio-labeling and Micro-PET Study of 64Cu Labeled D-Glucose for Tumor Imaging

HONG Ye1,2, ZHU Hua1, HU Ji2, LIN Xinfeng1, QING Jing2, YANG Zhi1,*()   

  1. 1. Key Laboratory of Carcinogenesis and Translational Research of Ministry of Education, Department of Nuclear Medicine, Peking University Cancer Hospital & Institute, Beijing 100142, China
    2. Isotope Department, China Institute of Atomic Energy, Beijing 102413, China
  • Received:2013-07-26 Online:2014-04-10 Published:2014-02-27
  • Contact: YANG Zhi E-mail:pekyz@163.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.81071198, 81172082, 81371592) and the Beijing Municipal Natural Science Foundation, China(No.7132040)

Abstract:

2-(4-Isothiocyanatobenzyl)-1,4,7,10-tetraazacyclo-dodecane-1,4,7,10-tetraacetic acid-D-glucose(DOTA-DG) was synthesized and radiolabeled with 64Cu. The DOTA-DG dissolved in sodium acetate buffer(pH=5.5) was added to the eluent of 64Cu. The solution was stirred and placed at 25 ℃ for 30 min. The labeling efficiency and radiochemical purity of 64Cu-DOTA-DG were all over 95%, as determined by radio-HPLC. The in vitro stability of the conjugates was analyzed in 0.1 mol/L PBS and 0.1 mol/L NaAc and it showed excellent in vitro stability. 14.8 MBq of 64Cu-DOTA-DG was injected to Hep-G2 xenograft models via tale vein. Positron emission tomography images were taken 1 and 3 h after the injection. These images suggested that there was high tumor uptake of 64Cu-DOTA-DG. The results suggested that 64Cu-DOTA-DG could provide images much clearer than the DG labeled with 99mTc, 111In and 68Ga, and observation of the metabolism of DG much longer. These preliminary data show that 64Cu-DOTA-DG appears to be useful in PET imaging.

Key words: 2-Amino-deoxy-D-glucose, 64Cu, Positron emission tomography(PET), Tumor

CLC Number: 

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