Abstract
We explored the application of new bifunctional chelating agent p-SCN-NODA by conjugating to GRPR targeting peptide, MATBBN. p-SCN-NODA can increase the labeling yield to 68.3 ± 1.8 %. 18F-Al-NODA-MATBBN can be produced within 25 min with a radiochemical purity of more than 98 %. At 30 min post-injection, the tumor uptake for 18F-Al-NODA-MATBBN was 3.23 ± 0.23 % ID/g. Biodistribution studies revealed that 18F-Al-NODA-MATBBN was excreted mainly through the kidneys. GRPR-binding specificity was also demonstrated by reduced tumor uptake of 18F-Al-NODA-MATBBN after co-injection with excess unlabeled MATBBN peptide at 1 h post-injection. It suggests that 18F-Al-NODA-MATBBN may be a potential PET tracer candidate for monitoring prostate cancer.
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Acknowledgments
We are grateful to this work is supported by National Natural Science Foundation (21401084, 51473071, 81171399, 81101077, 81472749, 81401450, 81471691), National Significant New Drugs Creation Program (2012ZX09505-001-001), Jiangsu Province Foundation (BE2012622, BL2012031, BM2012066, BE2014609), Outstanding Professional Fund of Health Ministry in Jiangsu Province (RC2011095, Q201204, Q201406, H201529) and Wuxi Hospital Management Center Project (YGZXM14014, YGZXL1316).
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Fei Chen and Bao Zhu equally contribute to this work.
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Chen, F., Zhu, B., Pan, D. et al. PET imaging of prostate cancer with 18F-Al-NODA-MATBBN. J Radioanal Nucl Chem 308, 905–911 (2016). https://doi.org/10.1007/s10967-015-4577-4
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DOI: https://doi.org/10.1007/s10967-015-4577-4