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Updated: Feb 14, 2026

A BW Reporter System for Studying Receptor-Ligand Interactions
Published on: January 7, 2019
Design, Synthesis, and Biological Evaluation of Bivalent Ligands Targeting Dopamine D2 -Like Receptors and the
Mingcheng Qian1,2, Lakshmi Vasudevan2, Jelle Huysentruyt2
1Laboratory for Medicinal Chemistry, Ghent University, Ottergemsesteenweg 460, 9000, Ghent, Belgium.
Abstract:
Currently, there is mounting evidence that intermolecular receptor-receptor interactions may result in altered receptor recognition, pharmacology and signaling. Heterobivalent ligands have been proven useful as molecular probes for confirming and targeting heteromeric receptors. This report describes the design and synthesis of novel heterobivalent ligands for dopamine D2 -like receptors (D2 -likeR) and the μ-opioid receptor (μOR) and their evaluation using ligand binding and functional assays. Interestingly, we identified a potent bivalent ligand that contains a short 18-atom linker and combines good potency with high efficacy both in β-arrestin 2 recruitment for μOR and MAPK-P for D4 R. Furthermore, this compound was characterized by a biphasic competition binding curve for the D4 R-μOR heterodimer, indicative of a bivalent binding mode. As this compound possibly bridges the D4 R-μOR heterodimer, it could be used as a pharmacological tool to further investigate the interactions of D4 R and μOR.
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