Author
Listed:
- Xavier Brenachot
(Faculty of Medicine, University of Geneva
University of Geneva)
- Giorgio Ramadori
(Faculty of Medicine, University of Geneva
University of Geneva)
- Rafael M. Ioris
(Faculty of Medicine, University of Geneva
University of Geneva)
- Christelle Veyrat-Durebex
(Faculty of Medicine, University of Geneva
University of Geneva)
- Jordi Altirriba
(University of Geneva
Faculty of Medicine, University of Geneva)
- Ebru Aras
(Faculty of Medicine, University of Geneva
University of Geneva)
- Sanda Ljubicic
(Faculty of Medicine, University of Geneva
University of Geneva)
- Daisuke Kohno
(Gunma University
Institute for Molecular and Cellular Regulation, Gunma University)
- Salvatore Fabbiano
(Faculty of Medicine, University of Geneva
University of Geneva)
- Sophie Clement
(Geneva University Hospitals, Rue Gabrielle Perret-Gentil)
- Nicolas Goossens
(Geneva University Hospitals, Rue Gabrielle Perret-Gentil)
- Mirko Trajkovski
(Faculty of Medicine, University of Geneva
University of Geneva)
- Sheila Harroch
(New York University Langone School of Medicine
Department of Neuroscience, Institut Pasteur)
- Francesco Negro
(University of Geneva
Geneva University Hospitals, Rue Gabrielle Perret-Gentil
Geneva University Hospitals, Rue Gabrielle Perret-Gentil)
- Roberto Coppari
(Faculty of Medicine, University of Geneva
University of Geneva)
Abstract
Obesity-induced inflammation engenders insulin resistance and type 2 diabetes mellitus (T2DM) but the inflammatory effectors linking obesity to insulin resistance are incompletely understood. Here, we show that hepatic expression of Protein Tyrosine Phosphatase Receptor Gamma (PTPR-γ) is stimulated by inflammation in obese/T2DM mice and positively correlates with indices of inflammation and insulin resistance in humans. NF-κB binds to the promoter of Ptprg and is required for inflammation-induced PTPR-γ expression. PTPR-γ loss-of-function lowers glycemia and insulinemia by enhancing insulin-stimulated suppression of endogenous glucose production. These phenotypes are rescued by re-expression of Ptprg only in liver of mice lacking Ptprg globally. Hepatic PTPR-γ overexpression that mimics levels found in obesity is sufficient to cause severe hepatic and systemic insulin resistance. We propose hepatic PTPR-γ as a link between obesity-induced inflammation and insulin resistance and as potential target for treatment of T2DM.
Suggested Citation
Xavier Brenachot & Giorgio Ramadori & Rafael M. Ioris & Christelle Veyrat-Durebex & Jordi Altirriba & Ebru Aras & Sanda Ljubicic & Daisuke Kohno & Salvatore Fabbiano & Sophie Clement & Nicolas Goossen, 2017.
"Hepatic protein tyrosine phosphatase receptor gamma links obesity-induced inflammation to insulin resistance,"
Nature Communications, Nature, vol. 8(1), pages 1-9, December.
Handle:
RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-02074-2
DOI: 10.1038/s41467-017-02074-2
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Citations
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Cited by:
- Gloria Ursino & Giorgio Ramadori & Anna Höfler & Soline Odouard & Pryscila D. S. Teixeira & Florian Visentin & Christelle Veyrat-Durebex & Giulia Lucibello & Raquel Firnkes & Serena Ricci & Claudia R., 2022.
"Hepatic non-parenchymal S100A9-TLR4-mTORC1 axis normalizes diabetic ketogenesis,"
Nature Communications, Nature, vol. 13(1), pages 1-17, December.
- Eduardo H. Gilglioni & Ao Li & Wadsen St-Pierre-Wijckmans & Tzu-Keng Shen & Israel Pérez-Chávez & Garnik Hovhannisyan & Michela Lisjak & Javier Negueruela & Valerie Vandenbempt & Julia Bauzá-Martinez , 2024.
"PTPRK regulates glycolysis and de novo lipogenesis to promote hepatocyte metabolic reprogramming in obesity,"
Nature Communications, Nature, vol. 15(1), pages 1-22, December.
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