Evaluation of [99mTc][Tc-HYNIC/EDDA]-Tyr as a target for metabolic tumor imaging in B16F10 melanoma tumor

Document Type : Original Article

Authors

1 Department of chemistry, Rasht Branch, Islamic Azad University, Rasht, Iran

2 Radiation Applications Research School, Nuclear Science and Technology Research Institute, Tehran, Iran

Abstract

Objective(s): Clinical interest in metabolic imaging of cancer has been growing in recent years. The increase in protein metabolism of cancer cells is interesting target for metabolic tumor imaging, for which radiolabeled amino acids can be applied. The aim of this study was to evaluate a newly developed radiolabeled amino acid as an imaging protein metabolism in melanoma tumor.
Methods: The radiolabeled tyrosine ([99mTc][Tc-HYNIC/EDDA]-Tyr) was prepared and its biological  properties was evaluated in B16F10 melanoma tumor. Moreover organs uptake and tumor accumulation were measured in mouse bearing B16F10 melanoma tumor.
Results: Radiolabeled tyrosine was attached in B16F10 melanoma cells and showed the cell binding capacity of 13.82±0.73%. In animal study, the accumulation of radiolabeled tyrosine was observed in B16F10 melanoma tumor (2.15±0.09 %ID/g) after 30 min post injection, so that the uptake ratio of tumor to muscle was about 5.11. Through scintigraphy process the melanoma tumor clearly visualized in mice at 30 min post injection.
Conclusion: These data suggest that the novel radiotracer ([99mTc][Tc-HYNIC/EDDA]-Tyr) as an protein metabolism imaging agent, is able to transfer into melanoma cells and show great expectation for the clinical application in the imaging of melanoma tumors.

Keywords

References

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Asia Oceania Journal of Nuclear Medicine and Biology
Volume 10, Issue 2
July 2022
Pages 100-108

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