1
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Cubizolle A, Cia D, Moine E, Jacquemot N, Guillou L, Rosell M, Angebault-Prouteau C, Lenaers G, Meunier I, Vercauteren J, Durand T, Crauste C, Brabet P. Isopropyl-phloroglucinol-DHA protects outer retinal cells against lethal dose of all-trans-retinal. J Cell Mol Med 2020; 24:5057-5069. [PMID: 32212312 PMCID: PMC7205824 DOI: 10.1111/jcmm.15135] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 12/19/2019] [Accepted: 01/27/2020] [Indexed: 12/18/2022] Open
Abstract
All‐trans‐retinal (atRAL) is a highly reactive carbonyl specie, known for its reactivity on cellular phosphatidylethanolamine in photoreceptor. It is generated by photoisomerization of 11‐cis‐retinal chromophore linked to opsin by the Schiff's base reaction. In ABCA4‐associated autosomal recessive Stargardt macular dystrophy, atRAL results in carbonyl and oxidative stress, which leads to bisretinoid A2E, accumulation in the retinal pigment epithelium (RPE). This A2E‐accumulation presents as lipofuscin fluorescent pigment, and its photooxidation causes subsequent damage. Here we describe protection against a lethal dose of atRAL in both photoreceptors and RPE in primary cultures by a lipidic polyphenol derivative, an isopropyl‐phloroglucinol linked to DHA, referred to as IP‐DHA. Next, we addressed the cellular and molecular defence mechanisms in commonly used human ARPE‐19 cells. We determined that both polyunsaturated fatty acid and isopropyl substituents bond to phloroglucinol are essential to confer the highest protection. IP‐DHA responds rapidly against the toxicity of atRAL and its protective effect persists. This healthy effect of IP‐DHA applies to the mitochondrial respiration. IP‐DHA also rescues RPE cells subjected to the toxic effects of A2E after blue light exposure. Together, our findings suggest that the beneficial role of IP‐DHA in retinal cells involves both anti‐carbonyl and anti‐oxidative capacities.
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Affiliation(s)
- Aurélie Cubizolle
- INSERM U1051, Institut des Neurosciences de Montpellier, Montpellier, France.,Université Montpellier, Montpellier, France
| | - David Cia
- UMR INSERM 1107, Laboratoire de Biophysique Neurosensorielle, Facultés de Médecine et de Pharmacie, Clermont-Ferrand, France
| | - Espérance Moine
- UMR5247-CNRS-UM ENSCM Faculté de Pharmacie, Institut des Biomolecules Max Mousseron (IBMM), Montpellier, France
| | - Nathalie Jacquemot
- UMR INSERM 1107, Laboratoire de Biophysique Neurosensorielle, Facultés de Médecine et de Pharmacie, Clermont-Ferrand, France
| | - Laurent Guillou
- INSERM U1051, Institut des Neurosciences de Montpellier, Montpellier, France.,Université Montpellier, Montpellier, France
| | - Mélissa Rosell
- UMR5247-CNRS-UM ENSCM Faculté de Pharmacie, Institut des Biomolecules Max Mousseron (IBMM), Montpellier, France
| | - Claire Angebault-Prouteau
- Université Montpellier, Montpellier, France.,INSERM U1046, UMR CNRS 9214, CHRU de Montpellier, Montpellier, France
| | - Guy Lenaers
- INSERM U1083, CNRS UMR 6015, MitoVasc-MitoLab, Université d'Angers, Angers, France
| | - Isabelle Meunier
- INSERM U1051, Institut des Neurosciences de Montpellier, Montpellier, France.,National Reference Centre for Inherited Sensory Disorders, CHU, Montpellier, France
| | - Joseph Vercauteren
- UMR5247-CNRS-UM ENSCM Faculté de Pharmacie, Institut des Biomolecules Max Mousseron (IBMM), Montpellier, France
| | - Thierry Durand
- UMR5247-CNRS-UM ENSCM Faculté de Pharmacie, Institut des Biomolecules Max Mousseron (IBMM), Montpellier, France
| | - Céline Crauste
- UMR5247-CNRS-UM ENSCM Faculté de Pharmacie, Institut des Biomolecules Max Mousseron (IBMM), Montpellier, France
| | - Philippe Brabet
- INSERM U1051, Institut des Neurosciences de Montpellier, Montpellier, France.,Université Montpellier, Montpellier, France
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2
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Arena G, Cissé MY, Pyrdziak S, Chatre L, Riscal R, Fuentes M, Arnold JJ, Kastner M, Gayte L, Bertrand-Gaday C, Nay K, Angebault-Prouteau C, Murray K, Chabi B, Koechlin-Ramonatxo C, Orsetti B, Vincent C, Casas F, Marine JC, Etienne-Manneville S, Bernex F, Lombès A, Cameron CE, Dubouchaud H, Ricchetti M, Linares LK, Le Cam L. Mitochondrial MDM2 Regulates Respiratory Complex I Activity Independently of p53. Mol Cell 2019; 69:594-609.e8. [PMID: 29452639 DOI: 10.1016/j.molcel.2018.01.023] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 12/21/2017] [Accepted: 01/18/2018] [Indexed: 12/12/2022]
Abstract
Accumulating evidence indicates that the MDM2 oncoprotein promotes tumorigenesis beyond its canonical negative effects on the p53 tumor suppressor, but these p53-independent functions remain poorly understood. Here, we show that a fraction of endogenous MDM2 is actively imported in mitochondria to control respiration and mitochondrial dynamics independently of p53. Mitochondrial MDM2 represses the transcription of NADH-dehydrogenase 6 (MT-ND6) in vitro and in vivo, impinging on respiratory complex I activity and enhancing mitochondrial ROS production. Recruitment of MDM2 to mitochondria increases during oxidative stress and hypoxia. Accordingly, mice lacking MDM2 in skeletal muscles exhibit higher MT-ND6 levels, enhanced complex I activity, and increased muscular endurance in mild hypoxic conditions. Furthermore, increased mitochondrial MDM2 levels enhance the migratory and invasive properties of cancer cells. Collectively, these data uncover a previously unsuspected function of the MDM2 oncoprotein in mitochondria that play critical roles in skeletal muscle physiology and may contribute to tumor progression.
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Affiliation(s)
- Giuseppe Arena
- Institut de Recherche en Cancérologie de Montpellier, INSERM, Université de Montpellier, Institut Régional du Cancer de Montpellier, Montpellier, France; Equipe Labélisée par la Ligue contre le Cancer; Unit of Stem Cells and Development, Team Stability of Nuclear and Mitochondrial DNA, Department of Developmental and Stem Cell Biology, Institut Pasteur, CNRS, Paris, France
| | - Madi Yann Cissé
- Institut de Recherche en Cancérologie de Montpellier, INSERM, Université de Montpellier, Institut Régional du Cancer de Montpellier, Montpellier, France; Equipe Labélisée par la Ligue contre le Cancer
| | - Samuel Pyrdziak
- Institut de Recherche en Cancérologie de Montpellier, INSERM, Université de Montpellier, Institut Régional du Cancer de Montpellier, Montpellier, France; Equipe Labélisée par la Ligue contre le Cancer
| | - Laurent Chatre
- Unit of Stem Cells and Development, Team Stability of Nuclear and Mitochondrial DNA, Department of Developmental and Stem Cell Biology, Institut Pasteur, CNRS, Paris, France
| | - Romain Riscal
- Institut de Recherche en Cancérologie de Montpellier, INSERM, Université de Montpellier, Institut Régional du Cancer de Montpellier, Montpellier, France; Equipe Labélisée par la Ligue contre le Cancer
| | - Maryse Fuentes
- Institut de Recherche en Cancérologie de Montpellier, INSERM, Université de Montpellier, Institut Régional du Cancer de Montpellier, Montpellier, France; Equipe Labélisée par la Ligue contre le Cancer
| | - Jamie Jon Arnold
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, State College, PA, USA
| | - Markus Kastner
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, State College, PA, USA
| | - Laurie Gayte
- Institut de Recherche en Cancérologie de Montpellier, INSERM, Université de Montpellier, Institut Régional du Cancer de Montpellier, Montpellier, France; Equipe Labélisée par la Ligue contre le Cancer
| | - Christelle Bertrand-Gaday
- Dynamique Musculaire et Métabolisme Laboratory, INRA, Université de Montpellier, Montpellier, France
| | - Kevin Nay
- Dynamique Musculaire et Métabolisme Laboratory, INRA, Université de Montpellier, Montpellier, France
| | - Claire Angebault-Prouteau
- INSERM, CNRS, Université de Montpellier, Centre Hospitalier Régional Universitaire de Montpellier, Montpellier, France
| | - Kerren Murray
- Institut Pasteur Paris, Cell Polarity, Migration and Cancer Unit, CNRS, INSERM, Paris, France
| | - Beatrice Chabi
- Dynamique Musculaire et Métabolisme Laboratory, INRA, Université de Montpellier, Montpellier, France
| | | | - Béatrice Orsetti
- Institut de Recherche en Cancérologie de Montpellier, INSERM, Université de Montpellier, Institut Régional du Cancer de Montpellier, Montpellier, France; Equipe Labélisée par la Ligue contre le Cancer
| | - Charles Vincent
- Institut de Recherche en Cancérologie de Montpellier, INSERM, Université de Montpellier, Institut Régional du Cancer de Montpellier, Montpellier, France; Equipe Labélisée par la Ligue contre le Cancer
| | - François Casas
- Dynamique Musculaire et Métabolisme Laboratory, INRA, Université de Montpellier, Montpellier, France
| | - Jean-Christophe Marine
- Laboratory for Molecular Cancer Biology, Center for the Biology of Disease, VIB, Leuven, Belgium; Laboratory for Molecular Cancer Biology, Department of Oncology, KU Leuven, Leuven, Belgium
| | | | - Florence Bernex
- Institut de Recherche en Cancérologie de Montpellier, INSERM, Université de Montpellier, Institut Régional du Cancer de Montpellier, Montpellier, France; Réseau d'Histologie Expérimentale de Montpellier, BioCampus, CNRS, INSERM, Université de Montpellier, Montpellier, France
| | - Anne Lombès
- Institut Cochin, INSERM, CNRS, Université Paris Descartes, Paris, France
| | - Craig Eugene Cameron
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, State College, PA, USA
| | | | - Miria Ricchetti
- Unit of Stem Cells and Development, Team Stability of Nuclear and Mitochondrial DNA, Department of Developmental and Stem Cell Biology, Institut Pasteur, CNRS, Paris, France
| | - Laetitia Karine Linares
- Institut de Recherche en Cancérologie de Montpellier, INSERM, Université de Montpellier, Institut Régional du Cancer de Montpellier, Montpellier, France; Equipe Labélisée par la Ligue contre le Cancer.
| | - Laurent Le Cam
- Institut de Recherche en Cancérologie de Montpellier, INSERM, Université de Montpellier, Institut Régional du Cancer de Montpellier, Montpellier, France; Equipe Labélisée par la Ligue contre le Cancer.
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3
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Van Den Brink DM, Cubizolle A, Chatelain G, Davoust N, Girard V, Johansen S, Napoletano F, Dourlen P, Guillou L, Angebault-Prouteau C, Bernoud-Hubac N, Guichardant M, Brabet P, Mollereau B. Physiological and pathological roles of FATP-mediated lipid droplets in Drosophila and mice retina. PLoS Genet 2018; 14:e1007627. [PMID: 30199545 PMCID: PMC6147681 DOI: 10.1371/journal.pgen.1007627] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 09/20/2018] [Accepted: 08/13/2018] [Indexed: 11/18/2022] Open
Abstract
Increasing evidence suggests that dysregulation of lipid metabolism is associated with neurodegeneration in retinal diseases such as age-related macular degeneration and in brain disorders such as Alzheimer’s and Parkinson’s diseases. Lipid storage organelles (lipid droplets, LDs), accumulate in many cell types in response to stress, and it is now clear that LDs function not only as lipid stores but also as dynamic regulators of the stress response. However, whether these LDs are always protective or can also be deleterious to the cell is unknown. Here, we investigated the consequences of LD accumulation on retinal cell homeostasis under physiological and stress conditions in Drosophila and in mice. In wild-type Drosophila, we show that dFatp is required and sufficient for expansion of LD size in retinal pigment cells (RPCs) and that LDs in RPCs are required for photoreceptor survival during aging. Similarly, in mice, LD accumulation induced by RPC-specific expression of human FATP1 was non-toxic and promoted mitochondrial energy metabolism in RPCs and non-autonomously in photoreceptor cells. In contrast, the inhibition of LD accumulation by dFatp knockdown suppressed neurodegeneration in Aats-metFBDrosophila mutants, which carry elevated levels of reactive oxygen species (ROS). This suggests that abnormal turnover of LD may be toxic for photoreceptors cells of the retina under oxidative stress. Collectively, these findings indicate that FATP-mediated LD formation in RPCs promotes RPC and neuronal homeostasis under physiological conditions but could be deleterious for the photoreceptors under pathological conditions. Lipids are major cell constituents and are present in the membranes, as free lipids in the cytoplasm, or stored in vesicles called lipid droplets (LDs). Under conditions of stress, lipids stored in LDs can be released to serve as substrates for energy metabolism by mitochondria. However, lipid storage is dysregulated in many degenerative disorders such as age-related macular degeneration, Parkinson’s and Alzheimer’s diseases. Thus, it is unclear whether accumulation of LDs is protective or toxic for neuronal cells. To address this question, we examined the consequences of removal or enforced LD accumulation on the health of retinal cells in flies and mice. Like humans, fly and mouse retinas contain retinal pigment cells (RPC) that support the functions of neighboring photoreceptor cells. We found that overexpression of the fatty acid transport protein (FATP) in RPCs induced accumulation of LDs in both transgenic flies and mice. Moreover, LD accumulation in RPCs was not harmful for juxtaposed photoreceptors during aging, but was toxic under stress conditions. We propose that lipid storage promotes cellular communication that affects photoreceptor health.
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Affiliation(s)
- Daan M. Van Den Brink
- Université de Lyon, ENSL, UCBL, CNRS, LBMC, UMS 3444 Biosciences Lyon Gerland, Lyon, France
| | - Aurélie Cubizolle
- Institut des Neurosciences de Montpellier, INSERM U1051, CHU St Eloi, Montpellier, France
- Université de Montpellier, Montpellier, France
| | - Gilles Chatelain
- Université de Lyon, ENSL, UCBL, CNRS, LBMC, UMS 3444 Biosciences Lyon Gerland, Lyon, France
| | - Nathalie Davoust
- Université de Lyon, ENSL, UCBL, CNRS, LBMC, UMS 3444 Biosciences Lyon Gerland, Lyon, France
| | - Victor Girard
- Université de Lyon, ENSL, UCBL, CNRS, LBMC, UMS 3444 Biosciences Lyon Gerland, Lyon, France
| | - Simone Johansen
- Université de Lyon, ENSL, UCBL, CNRS, LBMC, UMS 3444 Biosciences Lyon Gerland, Lyon, France
| | - Francesco Napoletano
- Molecular Oncology Unit, Department of Life Sciences, University of Trieste c/o Laboratorio Nazionale CIB, Area Science Park, Trieste, Italy
| | - Pierre Dourlen
- Institut Pasteur de Lille; Inserm, U1167, RID-AGE-Risk Factors and Molecular Determinants of Aging-Related Diseases; University Lille, U1167-Excellence Laboratory LabEx DISTALZ, Lille, France
| | - Laurent Guillou
- Institut des Neurosciences de Montpellier, INSERM U1051, CHU St Eloi, Montpellier, France
- Université de Montpellier, Montpellier, France
| | - Claire Angebault-Prouteau
- Institut des Neurosciences de Montpellier, INSERM U1051, CHU St Eloi, Montpellier, France
- INSERM U1046, UMR CNRS 9214, Université de Montpellier, CHRU de Montpellier, Montpellier, France
| | - Nathalie Bernoud-Hubac
- Univ Lyon, CarMeN laboratory, INSA Lyon, INSERM U1060, INRA U1397, Université Claude Bernard Lyon 1, F-69621, Villeurbanne, France
| | - Michel Guichardant
- Univ Lyon, CarMeN laboratory, INSA Lyon, INSERM U1060, INRA U1397, Université Claude Bernard Lyon 1, F-69621, Villeurbanne, France
| | - Philippe Brabet
- Institut des Neurosciences de Montpellier, INSERM U1051, CHU St Eloi, Montpellier, France
- Université de Montpellier, Montpellier, France
| | - Bertrand Mollereau
- Université de Lyon, ENSL, UCBL, CNRS, LBMC, UMS 3444 Biosciences Lyon Gerland, Lyon, France
- * E-mail:
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4
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Pauly M, Angebault-Prouteau C, Dridi H, Notarnicola C, Scheuermann V, Lacampagne A, Matecki S, Fauconnier J. ER stress disturbs SR/ER-mitochondria Ca 2+ transfer: Implications in Duchenne muscular dystrophy. Biochim Biophys Acta Mol Basis Dis 2017. [PMID: 28625916 DOI: 10.1016/j.bbadis.2017.06.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Besides its role in calcium (Ca2+) homeostasis, the sarco-endoplamic reticulum (SR/ER) controls protein folding and is tethered to mitochondria. Under pathophysiological conditions the unfolded protein response (UPR) is associated with disturbance in SR/ER-mitochondria crosstalk. Here, we investigated whether ER stress altered SR/ER-mitochondria links, Ca2+ handling and muscle damage in WT (Wild Type) and mdx mice, the murine model of Duchenne Muscular Dystrophy (DMD). In WT mice, the SR/ER-mitochondria links were decreased in isolated FDB muscle fibers after injection of ER stress activator tunicamycin (TM). Ca2+ imaging revealed an increase of cytosolic Ca2+ transient and a decrease of mitochondrial Ca2+ uptake. The force generating capacity of muscle dropped after TM. This impaired contractile function was accompanied by an increase in autophagy markers and calpain-1 activation. Conversely, ER stress inhibitors restored SR/ER-mitochondria links, mitochondrial Ca2+ uptake and improved diaphragm contractility in mdx mice. Our findings demonstrated that ER stress-altered SR/ER-mitochondria links, disturbed Ca2+ handling and muscle function in WT and mdx mice. Thus, ER stress may open up a prospect of new therapeutic targets in DMD.
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Affiliation(s)
- Marion Pauly
- Inserm U1055, Hypoxie et Physiopathologies, Université Grenoble Alpes, Grenoble, France; Inserm U1046, UMR CNRS 9214, Université Montpellier, CHRU Montpellier, Montpellier, France
| | | | - Haikel Dridi
- Inserm U1046, UMR CNRS 9214, Université Montpellier, CHRU Montpellier, Montpellier, France
| | - Cécile Notarnicola
- Inserm U1046, UMR CNRS 9214, Université Montpellier, CHRU Montpellier, Montpellier, France
| | - Valérie Scheuermann
- Inserm U1046, UMR CNRS 9214, Université Montpellier, CHRU Montpellier, Montpellier, France
| | - Alain Lacampagne
- Inserm U1046, UMR CNRS 9214, Université Montpellier, CHRU Montpellier, Montpellier, France
| | - Stefan Matecki
- Inserm U1046, UMR CNRS 9214, Université Montpellier, CHRU Montpellier, Montpellier, France
| | - Jérémy Fauconnier
- Inserm U1046, UMR CNRS 9214, Université Montpellier, CHRU Montpellier, Montpellier, France.
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5
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Roy J, Fauconnier J, Oger C, Farah C, Angebault-Prouteau C, Thireau J, Bideaux P, Scheuermann V, Bultel-Poncé V, Demion M, Galano JM, Durand T, Lee JCY, Le Guennec JY. Non-enzymatic oxidized metabolite of DHA, 4(RS)-4-F 4t-neuroprostane protects the heart against reperfusion injury. Free Radic Biol Med 2017; 102:229-239. [PMID: 27932075 DOI: 10.1016/j.freeradbiomed.2016.12.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2016] [Revised: 11/28/2016] [Accepted: 12/04/2016] [Indexed: 10/20/2022]
Abstract
Acute myocardial infarction leads to an increase in oxidative stress and lipid peroxidation. 4(RS)-4-F4t-Neuroprostane (4-F4t-NeuroP) is a mediator produced by non-enzymatic free radical peroxidation of the cardioprotective polyunsaturated fatty acid, docosahexaenoic acid (DHA). In this study, we investigated whether intra-cardiac delivery of 4-F4t-NeuroP (0.03mg/kg) prior to occlusion (ischemia) prevents and protects rat myocardium from reperfusion damages. Using a rat model of ischemic-reperfusion (I/R), we showed that intra-cardiac infusion of 4-F4t-NeuroP significantly decreased infarct size following reperfusion (-27%) and also reduced ventricular arrhythmia score considerably during reperfusion (-41%). Most notably, 4-F4t-NeuroP decreased ventricular tachycardia and post-reperfusion lengthening of QT interval. The evaluation of the mitochondrial homeostasis indicates a limitation of mitochondrial swelling in response to Ca2+ by decreasing the mitochondrial permeability transition pore opening and increasing mitochondria membrane potential. On the other hand, mitochondrial respiration measured by oxygraphy, and mitochondrial ROS production measured with MitoSox red® were unchanged. We found decreased cytochrome c release and caspase 3 activity, indicating that 4-F4t-NeuroP prevented reperfusion damages and reduced apoptosis. In conclusion, 4-F4t-NeuroP derived from DHA was able to protect I/R cardiac injuries by regulating the mitochondrial homeostasis.
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Affiliation(s)
- Jérôme Roy
- Inserm U1046 - UMR CNRS 9214 PHYMEDEX, Université de Montpellier, Montpellier, France.
| | - Jérémy Fauconnier
- Inserm U1046 - UMR CNRS 9214 PHYMEDEX, Université de Montpellier, Montpellier, France
| | - Camille Oger
- IBMM, CNRS UMR 5247, Université de Montpellier, ENSCM, Montpellier, France
| | - Charlotte Farah
- Inserm U1046 - UMR CNRS 9214 PHYMEDEX, Université de Montpellier, Montpellier, France
| | | | - Jérôme Thireau
- Inserm U1046 - UMR CNRS 9214 PHYMEDEX, Université de Montpellier, Montpellier, France
| | - Patrice Bideaux
- Inserm U1046 - UMR CNRS 9214 PHYMEDEX, Université de Montpellier, Montpellier, France
| | - Valérie Scheuermann
- Inserm U1046 - UMR CNRS 9214 PHYMEDEX, Université de Montpellier, Montpellier, France
| | | | - Marie Demion
- Inserm U1046 - UMR CNRS 9214 PHYMEDEX, Université de Montpellier, Montpellier, France
| | - Jean-Marie Galano
- IBMM, CNRS UMR 5247, Université de Montpellier, ENSCM, Montpellier, France
| | - Thierry Durand
- IBMM, CNRS UMR 5247, Université de Montpellier, ENSCM, Montpellier, France
| | | | - Jean-Yves Le Guennec
- Inserm U1046 - UMR CNRS 9214 PHYMEDEX, Université de Montpellier, Montpellier, France
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