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Seillier M, Pouyet L, N'Guessan P, Nollet M, Capo F, Guillaumond F, Peyta L, Dumas JF, Varrault A, Bertrand G, Bonnafous S, Tran A, Meur G, Marchetti P, Ravier MA, Dalle S, Gual P, Muller D, Rutter GA, Servais S, Iovanna JL, Carrier A. Defects in mitophagy promote redox-driven metabolic syndrome in the absence of TP53INP1. EMBO Mol Med 2016; 7:802-18. [PMID: 25828351 PMCID: PMC4459819 DOI: 10.15252/emmm.201404318] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The metabolic syndrome covers metabolic abnormalities including obesity and type 2 diabetes (T2D). T2D is characterized by insulin resistance resulting from both environmental and genetic factors. A genome-wide association study (GWAS) published in 2010 identified TP53INP1 as a new T2D susceptibility locus, but a pathological mechanism was not identified. In this work, we show that mice lacking TP53INP1 are prone to redox-driven obesity and insulin resistance. Furthermore, we demonstrate that the reactive oxygen species increase in TP53INP1-deficient cells results from accumulation of defective mitochondria associated with impaired PINK/PARKIN mitophagy. This chronic oxidative stress also favors accumulation of lipid droplets. Taken together, our data provide evidence that the GWAS-identified TP53INP1 gene prevents metabolic syndrome, through a mechanism involving prevention of oxidative stress by mitochondrial homeostasis regulation. In conclusion, this study highlights TP53INP1 as a molecular regulator of redox-driven metabolic syndrome and provides a new preclinical mouse model for metabolic syndrome clinical research.
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Affiliation(s)
- Marion Seillier
- Inserm, U1068, CRCM, Marseille, France Institut Paoli-Calmettes, Marseille, France Aix-Marseille Université, Marseille, France CNRS, UMR7258, CRCM, Marseille, France
| | - Laurent Pouyet
- Inserm, U1068, CRCM, Marseille, France Institut Paoli-Calmettes, Marseille, France Aix-Marseille Université, Marseille, France CNRS, UMR7258, CRCM, Marseille, France
| | - Prudence N'Guessan
- Inserm, U1068, CRCM, Marseille, France Institut Paoli-Calmettes, Marseille, France Aix-Marseille Université, Marseille, France CNRS, UMR7258, CRCM, Marseille, France
| | - Marie Nollet
- Inserm, U1068, CRCM, Marseille, France Institut Paoli-Calmettes, Marseille, France Aix-Marseille Université, Marseille, France CNRS, UMR7258, CRCM, Marseille, France
| | - Florence Capo
- Inserm, U1068, CRCM, Marseille, France Institut Paoli-Calmettes, Marseille, France Aix-Marseille Université, Marseille, France CNRS, UMR7258, CRCM, Marseille, France
| | - Fabienne Guillaumond
- Inserm, U1068, CRCM, Marseille, France Institut Paoli-Calmettes, Marseille, France Aix-Marseille Université, Marseille, France CNRS, UMR7258, CRCM, Marseille, France
| | - Laure Peyta
- Inserm, U1069 Nutrition, Croissance et Cancer (N2C), Tours, France
| | | | - Annie Varrault
- CNRS, UMR5203, Inserm, U661 Universités de Montpellier 1 & 2, IGF, Montpellier, France
| | - Gyslaine Bertrand
- CNRS, UMR5203, Inserm, U661 Universités de Montpellier 1 & 2, IGF, Montpellier, France
| | - Stéphanie Bonnafous
- Inserm, U1065, C3M Team 8 "Hepatic Complications in Obesity", Nice, France Université de Nice-Sophia-Antipolis, Nice, France Centre Hospitalier Universitaire de Nice, Pôle Digestif Hôpital L'Archet, Nice, France
| | - Albert Tran
- Inserm, U1065, C3M Team 8 "Hepatic Complications in Obesity", Nice, France Université de Nice-Sophia-Antipolis, Nice, France Centre Hospitalier Universitaire de Nice, Pôle Digestif Hôpital L'Archet, Nice, France
| | - Gargi Meur
- Cell Biology, Department of Medicine, Imperial College, London, UK
| | - Piero Marchetti
- Islet Cell Laboratory, University of Pisa - Cisanello Hospital, Pisa, Italy
| | - Magalie A Ravier
- CNRS, UMR5203, Inserm, U661 Universités de Montpellier 1 & 2, IGF, Montpellier, France
| | - Stéphane Dalle
- CNRS, UMR5203, Inserm, U661 Universités de Montpellier 1 & 2, IGF, Montpellier, France
| | - Philippe Gual
- Inserm, U1065, C3M Team 8 "Hepatic Complications in Obesity", Nice, France Université de Nice-Sophia-Antipolis, Nice, France Centre Hospitalier Universitaire de Nice, Pôle Digestif Hôpital L'Archet, Nice, France
| | - Dany Muller
- CNRS, UMR5203, Inserm, U661 Universités de Montpellier 1 & 2, IGF, Montpellier, France
| | - Guy A Rutter
- Cell Biology, Department of Medicine, Imperial College, London, UK
| | - Stéphane Servais
- Inserm, U1069 Nutrition, Croissance et Cancer (N2C), Tours, France
| | - Juan L Iovanna
- Inserm, U1068, CRCM, Marseille, France Institut Paoli-Calmettes, Marseille, France Aix-Marseille Université, Marseille, France CNRS, UMR7258, CRCM, Marseille, France
| | - Alice Carrier
- Inserm, U1068, CRCM, Marseille, France Institut Paoli-Calmettes, Marseille, France Aix-Marseille Université, Marseille, France CNRS, UMR7258, CRCM, Marseille, France
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