Hybrid Bombesin Analogues: Combining an Agonist and an Antagonist in Defined Distances for Optimized Tumor Targeting

被引:60
作者
Kroll, Carsten [1 ]
Mansi, Rosalba [2 ]
Braun, Friederike [2 ]
Dobitz, Stefanie [1 ]
Maecke, Helmut R. [2 ]
Wennemers, Helma [1 ]
机构
[1] ETH, Organ Chem Lab, CH-8092 Zurich, Switzerland
[2] Univ Hosp Freiburg, Dept Nucl Med, Freiburg, Germany
基金
瑞士国家科学基金会;
关键词
CELL-SURFACE RECEPTORS; SOLID-PHASE; IN-VIVO; LIGANDS; PROSTATE; SELECTIVITY; PEPTIDES; BINDING;
D O I
10.1021/ja4087648
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Radiolabeled hybrid ligands with defined distances between an agonist and an antagonist for the gastrin-releasing peptide receptor were found to have excellent tumor-targeting properties. Oligoprolines served as rigid scaffolds that allowed for tailoring distances of 10, 20, and 30 angstrom between the recognition elements. In vitro and in vivo studies revealed that the hybrid ligand with a distance of 20 angstrom between the recognition elements exhibits the highest yet observed tumor cell uptake and retention time in prostate cancer cells.
引用
收藏
页码:16793 / 16796
页数:4
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