Veronika FelberLudwig Boltzmann Institute for Applied Diagnositics · Imaging Biomarkers Team
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Introduction: The prostate-specific membrane antigen (PSMA)-targeted radiohybrid (rh) ligand [177Lu]Lu-rhPSMA-7.3 has recently been assessed in a pretherapeutic dosimetry study in prostate cancer patients. In comparison to [177Lu]Lu-PSMA I&T, application of [177Lu]Lu-rhPSMA-7.3 resulted in a significantly improved tumor dose, but also higher kidne...
Theranostic applications targeting the gastrin-releasing peptide receptor (GRPR) have shown promising results. When compared with other peptide ligands for radioligand therapy, the most often used GRPR ligand, RM2 (DOTA-Pip5-D-Phe6-Gln7-Trp8-Ala9-Val10-Gly11-His12-Sta13-Leu14-NH2), may be clinically impacted by limited metabolic stability. Aim: Wit...
Aim Elevated kidney uptake in insulinoma patients remains a major limitation of radiometallated exendin-derived ligands of the glucagon-like peptide 1 receptor (GLP-1R). Based on the previously published potent GLP-1R-activating undecapeptide 1 , short-chained GLP-1R ligands were developed to investigate whether kidney uptake can be reduced by mean...
Aim: To investigate whether modifications of prostate-specific membrane antigen (PSMA)-targeted radiolabeled urea-based inhibitors could reduce salivary gland uptake and thus improve tumor-to-salivary gland ratios, several analogs of a high affinity PSMA ligand were synthesized and evaluated in in vitro and in vivo studies. Methods: Binding moti...
Introduction Radiohybrid (rh) ligands, a novel class of prostate-specific membrane antigen (PSMA)-targeted radiopharmaceuticals, can be labeled either with [¹⁸F]fluorine via isotopic exchange or with radiometals (such as [⁶⁸Ga]Gallium, [¹⁷⁷Lu]Lutetium, [²²⁵Ac]Actinium). Among these, [¹⁸F, natGa]rhPSMA-7 has recently entered clinical assessment. Ai...