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The Bioconjugation and Radiosynthesis of 89Zr-DFO-labeled Antibodies
Published on: February 12, 2015
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(89)Zr-labeled compounds for PET imaging guided personalized therapy
Danielle J Vugts1, Guus A M S van Dongen1
1Department of Nuclear Medicine and PET Research, VU University Medical Center, Amsterdam, The Netherlands.
Drug Discovery Today. Technologies
|July 4, 2014
Summary
Zirconium-89 (89Zr) immuno-PET offers a promising method for in vivo assessment of monoclonal antibodies (mAbs). This review covers 89Zr production, desferrioxamine-based conjugation techniques, and the evaluation of 89Zr-mAb conjugates in research and clinical settings.
Area of Science:
- Nuclear Medicine
- Radiochemistry
- Immunology
Background:
- Immuno-positron emission tomography (immuno-PET) enables in vivo imaging of monoclonal antibodies (mAbs).
- (89)Zr is a suitable radioisotope for immuno-PET due to its long half-life and positron emission properties.
- Desferrioxamine (DFO) is a commonly used chelator for conjugating (89)Zr to mAbs.
Purpose of the Study:
- To review the production of (89)Zr.
- To discuss available conjugation strategies for linking (89)Zr to mAbs using DFO.
- To summarize the preclinical and clinical evaluation of (89)Zr-labeled mAb conjugates.
Main Methods:
- Production of (89)Zr via cyclotrons or accelerators.
- Conjugation of (89)Zr to mAbs using DFO-chelates.
- Evaluation of (89)Zr-mAb conjugates through preclinical imaging and biodistribution studies.
- Clinical assessment of (89)Zr-mAb conjugates in human studies.
Main Results:
- Established methods for (89)Zr production are available.
- DFO-based conjugation provides a reliable method for radiolabeling mAbs.
- (89)Zr-immuno-PET has shown efficacy in preclinical models and early clinical trials for evaluating mAb targeting and pharmacokinetics.
Conclusions:
- (89)Zr-immuno-PET is a valuable tool for in vivo mAb evaluation.
- Various DFO-based conjugation strategies facilitate the development of (89)Zr-mAbs.
- Continued research and clinical application of (89)Zr-immuno-PET are expected to advance targeted therapies.
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