Crystal Structure of the Peroxisome Proliferator-Activated Receptor gamma (PPARgamma) Ligand Binding Domain Complexed with a Novel Partial Agonist: A New Region of the Hydrophobic Pocket Could Be Exploited for Drug DesignMontanari, R., Saccoccia, F., Scotti, E., Crestani, M., Godio, C., Gilardi, F., Loiodice, F., Fracchiolla, G., Laghezza, A., Tortorella, P., Lavecchia, A., Novellino, E., Mazza, F., Aschi, M., Pochetti, G.
(2008) J.Med.Chem. 51: 7768-7776
- PubMed: 19053776
- DOI: 10.1021/jm800733h
- Primary Citation of Related Structures:
- Also Cited By: 6F2L, 4O8F, 4L98, 4L96, 4E4Q, 4E4K, 3HOD, 3HO0
- PubMed Abstract:
- Insights into the mechanism of partial agonism: crystal structures of the peroxisome proliferator-activated receptor gamma ligand-binding domain in the complex with two enantiomeric ligands
Pochetti, G.,Godio, C.,Mitro, N.,Caruso, D.,Galmozzi, A.,Scurati, S.,Loiodice, F.,Fracchiolla, G.,Tortorella, P.,Laghezza, A.,Lavecchia, A.,Novellino, E.,Mazza, F.,Crestani, M.
(2007) J.Biol.Chem. 282: 17314
- Partial agonists activate PPARgamma using a helix 12 independent mechanism
Bruning, J.B.,Chalmers, M.J.,Prasad, S.,Busby, S.A.,Kamenecka, T.M.,He, Y.,Nettles, K.W.,Griffin, P.R.
(2007) Structure 15: 1258
- Asymmetry in the PPARgamma/RXRalpha crystal structure reveals the molecular basis of heterodimerization among nuclear receptors
Gampe, R.T.,Montana, V.G.,Lambert, M.H.,Miller, A.B.,Bledsoe, R.K.,Milburn, M.V.,Kliewer, S.A.,Willson, T.M.,Xu, H.E.
(2000) Mol.Cell 5: 545
The peroxisome proliferator-activated receptors (PPARs) are ligand-dependent transcription factors regulating glucose and lipid metabolism. The search for new PPAR ligands with reduced adverse effects with respect to the marketed antidiabetic agents ...
The peroxisome proliferator-activated receptors (PPARs) are ligand-dependent transcription factors regulating glucose and lipid metabolism. The search for new PPAR ligands with reduced adverse effects with respect to the marketed antidiabetic agents thiazolidinediones (TZDs) and the dual-agonists glitazars is highly desired. We report the crystal structure and activity of the two enantiomeric forms of a clofibric acid analogue, respectively complexed with the ligand-binding domain (LBD) of PPARgamma, and provide an explanation on a molecular basis for their different potency and efficacy against PPARgamma. The more potent S-enantiomer is a dual PPARalpha/PPARgamma agonist which presents a partial agonism profile against PPARgamma. Docking of the S-enantiomer in the PPARalpha-LBD has been performed to explain its different subtype pharmacological profile. The hypothesis that partial agonists show differential stabilization of helix 3, when compared to full agonists, is also discussed. Moreover, the structure of the complex with the S-enantiomer reveals a new region of the PPARgamma-LBD never sampled before by other ligands.
Consiglio Nazionale delle Ricerche, Roma 00016, Italy.