In this work, new CXCR4-targeted ligands were prepared, based on a highly affine cyclic pentapeptide. The ligands can be radiolabeled with Tc-99m, F-18, Ga-68, Lu-177, etc. and are therefore utilizable for imaging and peptide-receptor radioligand therapy of CXCR4 overexpressing tumors. The CXCR4 affinity of the ligands was tested by means of IC50 determinations, the internalization into CXCR4 expressing cells and the lipophilicity (logD7.4) was determined. Selected ligands were further evaluated in tumor-bearing mice.
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In this work, new CXCR4-targeted ligands were prepared, based on a highly affine cyclic pentapeptide. The ligands can be radiolabeled with Tc-99m, F-18, Ga-68, Lu-177, etc. and are therefore utilizable for imaging and peptide-receptor radioligand therapy of CXCR4 overexpressing tumors. The CXCR4 affinity of the ligands was tested by means of IC50 determinations, the internalization into CXCR4 expressing cells and the lipophilicity (logD7.4) was determined. Selected ligands were further evaluated...
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