The aim of this work was to synthesize polymer-peptide conjugates, which can be used for medical applications. This system is inspired to Ringsdorfs model for pharmacologically active polymers, where poly(2-oxazolin) are the carrier, cyclic RGD peptide the targeting molecule and radioactive compounds the pharmacon. The synthetized polymer-peptide conjugates can be further applied in the radiodiagnosis of tumors. In this work, the fist steps of the binding of peptide and polymer were performed. Cyclic (-RGDfX-) peptides were available with different reactive groups on the side chain of the X amino acid, which has no influence on the biological activity of the peptide, and the corresponding reactive groups must be introduced in the polymer and further coupled. The polymer can be functionalized as endfunctionalization, where the reactive group can be introduced in the termination step, and as side chain functionalization, where the reactive group can be introduced through monomer synthesis. The successful endfunctionalization was performed through a Michaels addition of the thiol functionalized peptide to the maleimide or acrylic acid functionalized polymer, whereas the side chain functionalization resulted successful through an amide coupling between the carboxylic acid functionalized polymer and the amine functionalized peptide. A new monomer containing the versatile amine group in the side chain was also synthesized and successfully polymerized.
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The aim of this work was to synthesize polymer-peptide conjugates, which can be used for medical applications. This system is inspired to Ringsdorfs model for pharmacologically active polymers, where poly(2-oxazolin) are the carrier, cyclic RGD peptide the targeting molecule and radioactive compounds the pharmacon. The synthetized polymer-peptide conjugates can be further applied in the radiodiagnosis of tumors. In this work, the fist steps of the binding of peptide and polymer were performed....
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