Add time:07/21/2019         Source:sciencedirect.com

Radiolabeled benzamides have been reported to be attractive agents for targeting malignant melanoma as they bind melanin and display high accumulation in melanoma cells. Herein, we report the synthesis and bioevaluation of a novel 68Ga-labeled benzamide as a potential PET agent for malignant melanoma. The novel radiotracer was synthesized in good radiochemical yields (80% decay corrected yield) and high specific radioactivity (10 GBq/μmol). Cellular uptake of 68Ga-SCN-NOTA-BZA was significantly higher in B16F10 cells (mouse melanoma) treated with L-tyrosine. Biodistribution and micro-PET studies of 68Ga-SCN-NOTA-BZA in B16F10-bearing mice showed selective uptake into the tumor. The radiotracer was cleared via renal excretion without further metabolism. These results demonstrate that 68Ga-SCN-NOTA-BZA is a potential PET probe for malignant melanoma.

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