Differential action on coregulator interaction defines inverse retinoid agonists and neutral antagonists.
Fiche publication
Date publication
mai 2009
Auteurs
Membres identifiés du Cancéropôle Est :
Dr CIANFERANI Sarah, Dr GRONEMEYER Hinrich, Dr VAN DORSSELAER Alain
Tous les auteurs :
Germain P, Gaudon C, Pogenberg V, Sanglier S, Van Dorsselaer A, Royer CA, Lazar MA, Bourguet W, Gronemeyer H
Lien Pubmed
Résumé
Retinoic acid receptors (RARs) are ligand-dependent transcription factors that control a plethora of physiological processes. RARs exert their functions by regulating gene networks controlling cell growth, differentiation, survival, and death. Uncovering the molecular details by which synthetic ligands direct specificity and functionality of nuclear receptors is key to rational drug development. Here we define the molecular basis for (E)-4-[2-[5,6-Dihydro-5,5-dimethyl-8-(2-phenylethynyl)naphthalen-2-yl]ethe n-1-yl]benzoic acid (BMS204,493) acting as the inverse pan-RAR agonist and define 4-[5,6-Dihydro-5,5-dimethyl-8-(quinolin-3-yl)naphthalen-2-carboxamido]benz oic acid (BMS195,614) as the neutral RARalpha-selective antagonist. We reveal the details of the differential coregulator interactions imposed on the receptor by the ligands and show that the anchoring of H12 is fundamentally distinct in the presence of the two ligands, thus accounting for the observed effects on coactivator and corepressor interactions. These ligands will facilitate studies on the role of the constitutive activity of RARs, particularly of the tumor suppressor RARbeta, whose specific functions relative to other RARs have remained elusive.
Référence
Chem Biol. 2009 May 29;16(5):479-89.