Abstract
In order to develop a possible C-X-C chemokine receptor type 4 (CXCR4) imaging agent for oncological scintigraphy, [62Zn]labeled 1,1′-[1,4-phenylenebis(methylene)]bis-1,4,8,11-tetraazacyclotetradecane ([62Zn]-AMD3100) was prepared using in-house made [62Zn]ZnCl2 and AMD-3100 for 1 h at 50 °C (radiochemical purity: >97 % ITLC, >96 % HPLC, specific activity: 20–22 GBq/mmol) in acetate buffer. The complex showed highly hydrophilic properties (log P = −1.114). Stability of the complex was checked in presence of human serum (37 °C) and in final formulation for 1 day. The biodistribution of the labeled compound in vital organs of wild-type Sprague–Dawdley rats were determined and compared with that of free Zn2+ cation up to 6 h. Co-incidence imaging of the complex was consistent with the distribution data up to 3 h. The complex can be a possible in vivo generator compound for PET imaging in CXCR4 positive tumors.
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Acknowledgments
This study has been funded and supported by Tehran University of Medical Sciences, Tehran, Iran; Grant No. 18308. Authors wish to thank Ms. Moradkhani for performing animal tests and Ms. Bolourinovin for instrumental support.
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Aghanejad, A., Jalilian, A.R., Fazaeli, Y. et al. Radiosynthesis and biodistribution studies of [62Zn/62Cu]–plerixafor complex as a novel in vivo PET generator for chemokine receptor imaging. J Radioanal Nucl Chem 299, 1635–1644 (2014). https://doi.org/10.1007/s10967-013-2822-2
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DOI: https://doi.org/10.1007/s10967-013-2822-2