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Int J Cancer. 2003 Apr 10;104(3):376-9.

Anti-tumor effect and increased survival after treatment with [177Lu-DOTA0,Tyr3]octreotate in a rat liver micrometastases model.

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  • 1Department of Nuclear Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands.


Peptide receptor scintigraphy with [(111)In-DTPA(0)]octreotide (a stabilized radiolabeled somatostatin (SS) analogue, OctreoScan) is widely used for the visualization and staging of somatostatin receptor-positive tumors. The application of likewise somatostatin analogues as vehicle for the deliverance of radionuclides to somatostatin receptor-positive targets are now in use for peptide receptor-targeted radionuclide therapy (PRRT). Currently preclinical and clinical investigation are ongoing trying to find the optimal combination of radionuclide and ligand. The anti-tumoral effects of such combinations, like [90Y-DOTA degrees, Tyr(3)]octreotide and [(177)Lu-DOTA degrees, Tyr(3)]octreotate, on SSR-positive solid tumors have been reported. In this study we present the anti-tumor effects of (177)Lu-DOTA-tate on: a) a single SSR-positive cell model and b) on a SSR-positive tumor in a rat liver micrometastatic model, mimicking disseminated disease. (177)Lu-DOTA-tate showed anti-tumoral effects in both cases and significant survival in the PRRT-treated rats. (177)Lu-DOTA-tate is a very promising new treatment modality for SSR-positive tumors, including disseminated disease.

Copyright 2003 Wiley-Liss, Inc.

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