Biological Screening and Crystallographic Studies of Hydroxy γ-Lactone Derivatives to Investigate PPARγ Phosphorylation Inhibition

Author:

Capelli Davide1ORCID,Cazzaniga Giulia2ORCID,Mori Matteo2ORCID,Laghezza Antonio3ORCID,Loiodice Fulvio3ORCID,Quaglia Martina2,Negro Elisa1,Meneghetti Fiorella2ORCID,Villa Stefania2ORCID,Montanari Roberta1ORCID

Affiliation:

1. Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Strada Provinciale 35d, n. 9-00010, Montelibretti, 34149 Rome, Italy

2. Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli 25, 20133 Milano, Italy

3. Department of Pharmacy—Drug Sciences, University of Bari “Aldo Moro”, Via Orabona 4, 70125 Bari, Italy

Abstract

PPARγ represents a key target for the treatment of type 2 diabetes and metabolic syndrome. To avoid serious adverse effects related to the PPARγ agonism profile of traditional antidiabetic drugs, a new opportunity is represented by the development of molecules acting as inhibitors of PPARγ phosphorylation by the cyclin-dependent kinase 5 (CDK5). Their mechanism of action is mediated by the stabilization of the PPARγ β-sheet containing Ser273 (Ser245 in PPARγ isoform 1 nomenclature). In this paper, we report the identification of new γ-hydroxy-lactone-based PPARγ binders from the screening of an in-house library. These compounds exhibit a non-agonist profile towards PPARγ, and one of them prevents Ser245 PPARγ phosphorylation by acting mainly on PPARγ stabilization and exerting a weak CDK5 inhibitory effect.

Funder

University of Milan

CNR

Publisher

MDPI AG

Subject

Molecular Biology,Biochemistry

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