2. Academic Validation
  3. Antidiabetic actions of a non-agonist PPARγ ligand blocking Cdk5-mediated phosphorylation

Antidiabetic actions of a non-agonist PPARγ ligand blocking Cdk5-mediated phosphorylation

  • Nature. 2011 Sep 4;477(7365):477-81. doi: 10.1038/nature10383.
Jang Hyun Choi 1,  Alexander S Banks,  Theodore M Kamenecka,  Scott A Busby,  Michael J Chalmers,  Naresh Kumar,  Dana S Kuruvilla,  Youseung Shin,  Yuanjun He,  John B Bruning,  David P Marciano,  Michael D Cameron,  Dina Laznik,  Michael J Jurczak,  Stephan C Schürer,  Dušica Vidović,  Gerald I Shulman,  Bruce M Spiegelman,  Patrick R Griffin
Affiliations

Affiliation

  • 1 Department of Cancer Biology and Division of Metabolism and Chronic Disease, Dana-Farber Cancer Institute and Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA.
PMID: 21892191 DOI: 10.1038/nature10383
Abstract

PPARγ is the functioning receptor for the thiazolidinedione (TZD) class of antidiabetes drugs including rosiglitazone and pioglitazone. These drugs are full classical agonists for this nuclear receptor, but recent data have shown that many PPARγ-based drugs have a separate biochemical activity, blocking the obesity-linked phosphorylation of PPARγ by CDK5. Here we describe novel synthetic compounds that have a unique mode of binding to PPARγ, completely lack classical transcriptional agonism and block the Cdk5-mediated phosphorylation in cultured adipocytes and in insulin-resistant mice. Moreover, one such compound, SR1664, has potent antidiabetic activity while not causing the fluid retention and weight gain that are serious side effects of many of the PPARγ drugs. Unlike TZDs, SR1664 also does not interfere with bone formation in culture. These data illustrate that new classes of antidiabetes drugs can be developed by specifically targeting the Cdk5-mediated phosphorylation of PPARγ.

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