Fiche publication
Date publication
mai 2010
Auteurs
Membres identifiés du Cancéropôle Est :
Dr GALZI Jean-Luc
,
Pr HIBERT Marcel
Tous les auteurs :
Iturrioz X, Alvear-Perez R, De Mota N, Franchet C, Guillier F, Leroux V, Dabire H, Le Jouan M, Chabane H, Gerbier R, Bonnet D, Berdeaux A, Maigret B, Galzi JL, Hibert M, Llorens-Cortes C
Lien Pubmed
Résumé
Apelin plays a prominent role in body fluid and cardiovascular homeostasis. To explore further upstream the role played by this peptide, nonpeptidic agonists and antagonists of the apelin receptor are required. To identify such compounds that do not exist to date, we used an original fluorescence resonance energy transfer-based assay to screen a G-protein-coupled receptor-focused library of fluorescent compounds on the human EGFP-tagged apelin receptor. This led to isolated E339-3D6 that displayed a 90 nM affinity and behaved as a partial agonist with regard to cAMP production and as a full agonist with regard to apelin receptor internalization. Finally, E339-3D6 induced vasorelaxation of rat aorta precontracted with noradrenaline and potently inhibited systemic vasopressin release in water-deprived mice when intracerebroventricularly injected. This compound represents the first nonpeptidic agonist of the apelin receptor, the optimization of which will allow development of a new generation of vasodilator and aquaretic agents.
Référence
FASEB J. 2010 May;24(5):1506-17
