Synthesis, labeling and quality control of a new Neuropeptide Y analogue for diagnosis of breast tumors
Publish place: Iranian Journal of Nuclear Medicine، Vol: 16، Issue: 1
Publish Year: 1387
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IRJNM-16-1_003
تاریخ نمایه سازی: 27 فروردین 1399
Abstract:
Introduction: Over expression of selected peptide receptors in human tumors has been shown to represent clinically relevant targets for cancer diagnosis and therapy. The aim of this work was to investigate Neuropeptide Y (NPY) as a new radiopharmaceutical for diagnosis of breast cancer. Methods: A neuropeptide Y analogues with Y1 receptor preference and agonistic properties was synthesized by solid phase method. After conjugation with diethylenetriaminepentaacetic acid (DTPA) labeling with 111In was performed. For labeled peptide, yield of labeling, stability in human serum, receptor binding in cell surface with internalization in SK-N-MC cells, and biodistribution in normal rat were determined. Results: Peptide was synthesized and labeled with more than 95% purity. Radiolabeled peptide was stable in human serum and specifically binds and internalized in the cells with Y1 receptor (4h = 22%). A rapid clearance from blood pool and urinary with hepatobiliary excretion were observed. Conclusion: Our results showed that this peptide can be considered as a candidate for diagnosis of breast tumors
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Authors
Mostafa Gandomkar
Nuclear Science Research School, Nuclear Science & Technology Research Institute (NSTRI), Atomic Energy Organization of Iran, Tehran, Iran
Reza Najafi
Nuclear Science Research School, Nuclear Science & Technology Research Institute (NSTRI), Atomic Energy Organization of Iran, Tehran, Iran
Mohammad Mazidi
Nuclear Science Research School, Nuclear Science & Technology Research Institute (NSTRI), Atomic Energy Organization of Iran, Tehran, Iran
Mostafa Goudarzi
Nuclear Science Research School, Nuclear Science & Technology Research Institute (NSTRI), Atomic Energy Organization of Iran, Tehran, Iran