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Biological evaluation of [99mTc]Tc-labeled Buthus martensii Karsch Chlorotoxin peptide for glioma imaging

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Abstract

This study was to investigate the synthesis and biological evaluation of [99mTc]Tc-labeled Buthus martensii Karsch Chlorotoxin ([99mTc]Tc-BmK CT) as a radiopharmaceutical for glioma single photon computed emission tomography (SPECT) imaging. The results showed that BmK CT peptide modified with a hexahistidine tag displayed good cytocompatibility in vitro, and could be efficiently radiolabeled with 99mTc via [99mTc]Tc-tricarbonyl chemistry. The [99mTc]Tc-BmK CT showed satisfactory radiochemical purity and stability in vitro, and could be developed as a probe for targeted SPECT imaging of glioma cells in vitro and in a tumor-bearing mouse model. Our data indicated that the synthesized [99mTc]Tc-BmK CT might be developed as a promising imaging agent for glioma diagnostic application.

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Acknowledgements

The work was financially supported by the National Natural Science Foundation of China (81671712 and 81801727), and the Ningxia Key Research and Development Program (2019BEG03018).

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Correspondence to Meilin Zhu, Jiqin Yang or Jinhua Zhao.

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Liu, C., Wang, T., Zhao, L. et al. Biological evaluation of [99mTc]Tc-labeled Buthus martensii Karsch Chlorotoxin peptide for glioma imaging. J Radioanal Nucl Chem 326, 193–199 (2020). https://doi.org/10.1007/s10967-020-07293-4

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  • DOI: https://doi.org/10.1007/s10967-020-07293-4

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