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Radiolabeled Peptides and Proteins in Cancer Therapy

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With the advances in genomics, molecular biology including gene vector technologies today's molecular imaging modalities have strongly been improved. The major progress is based on peptide and antibody targeting vectors. When labeled with β-emitting radioisotopes these agents are applicable for endoradiotherapy and exploit the targeting potential for highly specific therapeutic applications. This novel class of pharmaceuticals offers the potential to develop patient specific therapies and might provide the means to go beyond the possibilities of current chemotherapy and radiation therapy. In this review the basic principles of endoradiotherapeutics based on peptides and proteins are presented. Several of these drugs such as 90Y-rituximab (Zevalin), 131I-tositumomab (Bexxar) and the somatostatin receptor binding 90YDOTATOC that are nowadays successfully applied in oncological therapy are discussed. Future generations of endoradiopharmaceuticals will address yet unknown targets which might be identified by screening techniques such as ribosome and phage display peptide libraries.

Keywords: Endoradiotherapy; labeling; oncology; radioisotopes; targeting

Document Type: Research Article


Affiliations: Department of Nuclear Medicine,University of Heidelberg, Heidelberg, Germany.

Publication date: March 1, 2007

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  • Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.

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