Application of Radiolabeled Peptides in Tumor Imaging and Therapy Publisher Pubmed



Mohtavinejad N¹ ; Shafiee Ardestani M¹ ; Khalaj A² ; Pormohammad A³ ; Najafi R⁴ ; Bitarafanrajabi A^{5, 6} ; Hajiramezanali M¹ ; Amanlou M²
Source: Life Sciences Published:2020

Abstract

Scientists are looking for new therapies to cope with the rise in cancer worldwide. Since cancer cells overexpress peptide receptors and owing to small size, easy uptake by tumor cells, easy preparation, and with no toxicity, the use of radiolabeled peptides with high specificity and affinity for accurate imaging and therapy has attracted much attention. To develop an ideal imaging or treatment radiolabeled peptide, there are some aspects in the components of radiolabeled peptide including radionuclide, peptide, chelator, and spacer that should be considered. Some peptides, including somatostatin, RGD, neurotensin, bombesin, exendin, vasoactive intestinal peptide, and gastrin are currently under (pre)clinical investigations. Today, nanoparticles are suitable tools for targeting peptide for molecular imaging and therapy of tumors with low toxicity. This paper presents some essential aspects in developing a valuable radiolabeled peptide and some radiolabeled peptides with regard to their applications in tumor imaging and therapy in pre-clinical and clinical phases. © 2020