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- W4367599094 abstract "The clinical success of radiolabeled somatostatin analogs in the diagnosis and therapy—“theranostics”—of tumors expressing the somatostatin subtype 2 receptor (SST2R) has paved the way for the development of a broader panel of peptide radioligands targeting different human tumors. This approach relies on the overexpression of other receptor-targets in different cancer types. In recent years, a shift in paradigm from internalizing agonists to antagonists has occurred. Thus, SST2R-antagonist radioligands were first shown to accumulate more efficiently in tumor lesions and clear faster from the background in animal models and patients. The switch to receptor antagonists was soon adopted in the field of radiolabeled bombesin (BBN). Unlike the stable cyclic octapeptides used in the case of somatostatin, BBN-like peptides are linear, fast to biodegradable and elicit adverse effects in the body. Thus, the advent of BBN-like antagonists provided an elegant way to obtain effective and safe radiotheranostics. Likewise, the pursuit of gastrin and exendin antagonist-based radioligands is advancing with exciting new outcomes on the horizon. In the present review, we discuss these developments with a focus on clinical results, commenting on challenges and opportunities for personalized treatment of cancer patients by means of state-of-the-art antagonist-based radiopharmaceuticals." @default.
- W4367599094 created "2023-05-02" @default.
- W4367599094 creator A5029897786 @default.
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- W4367599094 creator A5079838266 @default.
- W4367599094 date "2023-04-30" @default.
- W4367599094 modified "2023-10-01" @default.
- W4367599094 title "Peptide Radioligands in Cancer Theranostics: Agonists and Antagonists" @default.
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