Abstract
Recently, radiolabeled receptor-binding peptides have emerged as an important class of radiopharmaceuticals for diagnosis and therapy. Major advantages of peptides compared with antibodies are that they are not immunogenic, show fast diffusion and target localization and can be modified concerning metabolic stability and pharmacokinetics. Advantages compared to small molecular weight compounds are, that they are more tolerant concerning modification necessary for appropriate labeling (e.g., introduction of chelating systems for radio metalation) and strategies for optimizing pharmacokinetics. Most prominent members of this class of tracer are radiolabeled peptides for targeting somatostatin receptors. Some of them are already clinical routine for diagnosis as well as peptide receptor radionuclide therapy of somatostatin expressing tumors. Currently a variety of other peptides including bombesin derivatives, cholecystokinin/gastrin analogs and RGD-containing peptides are evaluated.
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Haubner, R., Decristoforo, C. (2011). Radiotracer II: Peptide-Based Radiopharmaceuticals. In: Kiessling, F., Pichler, B. (eds) Small Animal Imaging. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-12945-2_19
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DOI: https://doi.org/10.1007/978-3-642-12945-2_19
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