Abstract
mTOR inhibitors are recently important tools for cancer treatment. They act on cell growth regulation, proliferation, and survival. Pharmacological therapy with mTOR inhibitors such as everolimus is emerging as an alternate approach. Meanwhile, early diagnosis is a hot target in cancer research. Conversely, it can be a novel diagnosis approach to monitor mTOR inhibitors during their pathway. From this point of view, radiolabeling of everolimus and its nanoformulation (EVE-PLGA nanoparticles) in high yields (95%) with an important diagnostic radionuclide (technetium-99m) is described. Besides, in vitro incorporation assays of radiolabeled everolimus and its nanoformulation against the cervix and ovarian cancer cells were demonstrated 8- and 12-times high values than control group. In conclusion, radiolabeled everolimus and its nanoformulation have a promise to improve on monitoring mTOR inhibitors.
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Acknowledgements
Current work is supported by Ege University Scientific Research Projects Coordination Unit (Project No. 17-TIP-046 (ID:109)). The authors thank to Fatmagül Gedik, Neşe Kavcar and Öykü Madenci for the technical assistance during the assays. A limited part of the synthesis and radiolabeling part was presented as a poster presentation at 44th FEBS Congress, From Molecules to Living Systems, Krakow, Poland, July 6-11, 2019.
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Bilgi, A., Yurt Kilcar, A., Gokulu, S.G. et al. mTOR inhibitors from a diagnostic perspective: radiolabeling of everolimus and its nanoformulation, in vitro incorporation assays against cervix and ovarian cancer cells. J Radioanal Nucl Chem 331, 171–178 (2022). https://doi.org/10.1007/s10967-021-08066-3
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DOI: https://doi.org/10.1007/s10967-021-08066-3