Binding kinetics of ZM241385 derivatives at the human adenosine A2A receptor.

Dong Guo, Lizi Xia, Jacobus P D van Veldhoven, Marc Hazeu, Tamara Mocking, Johannes Brussee, Adriaan P Ijzerman, Laura H Heitman

ChemMedChem 2014 Apr

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Classical drug design and development rely mostly on affinity- or potency-driven structure-activity relationships (SAR). Thus far, a given compound's binding kinetics have been largely ignored, the importance of which is now being increasingly recognized. In the present study, we performed an extensive structure-kinetics relationship (SKR) study in addition to a traditional SAR analysis at the adenosine A2A receptor (A2A R). The ensemble of 24 A2A R compounds, all triazolotriazine derivatives resembling the prototypic antagonist ZM241385 (4-(2-((7-amino-2-(furan-2-yl)-[1,2,4]triazolo[1,5-a][1,3,5]triazin-5-yl)amino)ethyl)phenol), displayed only minor differences in affinity, although they varied substantially in their dissociation rates from the receptor. We believe that such a combination of SKR and SAR analyses, as we have done with the A2A R, will have general importance for the superfamily of G protein-coupled receptors, as it can serve as a new strategy to tailor the interaction between ligand and receptor. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Citation

Dong Guo, Lizi Xia, Jacobus P D van Veldhoven, Marc Hazeu, Tamara Mocking, Johannes Brussee, Adriaan P Ijzerman, Laura H Heitman. Binding kinetics of ZM241385 derivatives at the human adenosine A2A receptor. ChemMedChem. 2014 Apr;9(4):752-61