| abstract |
The present application discloses compositions and methods of synthesis and use of labeled targeting peptides, such as octreotide, octreotate, or other somatostatin analogs or derivatives. The targeting peptide may be labeled with a therapeutic or diagnostic isotope, such as 61 Cu, 62 Cu, 64 Cu, 67 Cu, 18 F, 19 F, 66 Ga, 67 Ga, 68 Ga, 72 Ga, 111 In, 177 Lu, 44 Sc, 47 Sc, 86 Y, 88 Y, 90 Y, 45 Ti or 89 Zr, preferably 18 F or 19 F. More preferably, the targeting peptide is NOTA-octreotate, NOTA-MPAA-octreotate, pyridine-NOTA-octreotate or triazole-NOTA-octreotate. The labeled targeting peptides may be used for detection, diagnosis, imaging and/or treatment of sst 2 n + tumors, such as neuroendocrine tumors. |