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Kadri L, Ferru-Clément R, Bacle A, Payet LA, Cantereau A, Hélye R, Becq F, Jayle C, Vandebrouck C, Ferreira T. Modulation of cellular membrane properties as a potential therapeutic strategy to counter lipointoxication in obstructive pulmonary diseases. Biochim Biophys Acta Mol Basis Dis 2018; 1864:3069-3084. [PMID: 29960042 DOI: 10.1016/j.bbadis.2018.06.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [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: 01/29/2018] [Revised: 06/04/2018] [Accepted: 06/25/2018] [Indexed: 02/08/2023]
Abstract
Maintaining the equilibrium between saturated and unsaturated fatty acids within membrane phospholipids (PLs) is crucial to sustain the optimal membrane biophysical properties, compatible with selective organelle-based processes. Lipointoxication is a pathological condition under which saturated PLs tend to accumulate within the cell at the expense of unsaturated species, with major impacts on organelle function. Here, we show that human bronchial epithelial cells extracted from lungs of patients with Obstructive Pulmonary Diseases (OPDs), i. e. Cystic Fibrosis (CF) individuals and Smokers, display a characteristic lipointoxication signature, with excessive amounts of saturated PLs. Reconstitution of this signature in cellulo and in silico revealed that such an imbalance results in altered membrane properties and in a dramatic disorganization of the intracellular network of bronchial epithelial cells, in a process which can account for several OPD traits. Such features include Endoplasmic Reticulum-stress, constitutive IL8 secretion, bronchoconstriction and, ultimately, epithelial cell death by apoptosis. We also demonstrate that a recently-identified lipid-like molecule, which has been shown to behave as a "membrane-reshaper", counters all the lipointoxication hallmarks tested. Altogether, these insights highlight the modulation of membrane properties as a potential new strategy to heal and prevent highly detrimental symptoms associated with OPDs.
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Affiliation(s)
- Linette Kadri
- Laboratoire Coopératif "Lipotoxicity and Channelopathies - ConicMeds", Université de Poitiers, 1, rue Georges Bonnet, Poitiers, France
| | - Romain Ferru-Clément
- Laboratoire Coopératif "Lipotoxicity and Channelopathies - ConicMeds", Université de Poitiers, 1, rue Georges Bonnet, Poitiers, France
| | - Amélie Bacle
- Laboratoire Coopératif "Lipotoxicity and Channelopathies - ConicMeds", Université de Poitiers, 1, rue Georges Bonnet, Poitiers, France
| | - Laurie-Anne Payet
- Laboratoire "Signalisation et Transports Ioniques Membranaires (STIM)", Université de Poitiers, 1, rue Georges Bonnet, Poitiers, France
| | - Anne Cantereau
- Laboratoire "Signalisation et Transports Ioniques Membranaires (STIM)", Université de Poitiers, 1, rue Georges Bonnet, Poitiers, France
| | - Reynald Hélye
- Laboratoire Coopératif "Lipotoxicity and Channelopathies - ConicMeds", Université de Poitiers, 1, rue Georges Bonnet, Poitiers, France
| | - Frédéric Becq
- Laboratoire "Signalisation et Transports Ioniques Membranaires (STIM)", Université de Poitiers, 1, rue Georges Bonnet, Poitiers, France
| | - Christophe Jayle
- Service de Chirurgie Cardiothoracique, CHU Poitiers, Poitiers, France
| | - Clarisse Vandebrouck
- Laboratoire "Signalisation et Transports Ioniques Membranaires (STIM)", Université de Poitiers, 1, rue Georges Bonnet, Poitiers, France
| | - Thierry Ferreira
- Laboratoire Coopératif "Lipotoxicity and Channelopathies - ConicMeds", Université de Poitiers, 1, rue Georges Bonnet, Poitiers, France.
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Ferru-Clément R, Spanova M, Dhayal S, Morgan NG, Hélye R, Becq F, Hirose H, Antonny B, Vamparys L, Fuchs PFJ, Ferreira T. Targeting surface voids to counter membrane disorders in lipointoxication-related diseases. J Cell Sci 2016; 129:2368-81. [PMID: 27142833 DOI: 10.1242/jcs.183590] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 11/18/2015] [Accepted: 04/26/2016] [Indexed: 01/01/2023] Open
Abstract
Saturated fatty acids (SFA), which are abundant in the so-called western diet, have been shown to efficiently incorporate within membrane phospholipids and therefore impact on organelle integrity and function in many cell types. In the present study, we have developed a yeast-based two-step assay and a virtual screening strategy to identify new drugs able to counter SFA-mediated lipointoxication. The compounds identified here were effective in relieving lipointoxication in mammalian β-cells, one of the main targets of SFA toxicity in humans. In vitro reconstitutions and molecular dynamics simulations on bilayers revealed that these molecules, albeit according to different mechanisms, can generate voids at the membrane surface. The resulting surface defects correlate with the recruitment of loose lipid packing or void-sensing proteins required for vesicular budding, a central cellular process that is precluded under SFA accumulation. Taken together, the results presented here point at modulation of surface voids as a central parameter to consider in order to counter the impacts of SFA on cell function.
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Affiliation(s)
- Romain Ferru-Clément
- Laboratoire Signalisation et Transports Ioniques Membranaires (STIM), CNRS ERL 7368, Université de Poitiers, 1, rue Georges Bonnet, Poitiers Cedex 9 86073, France Société d'Accélération du Transfert de Technologie (SATT) Grand Centre, 8 rue Pablo Picasso, Clermont-Ferrand 63000, France
| | - Miroslava Spanova
- Laboratoire Signalisation et Transports Ioniques Membranaires (STIM), CNRS ERL 7368, Université de Poitiers, 1, rue Georges Bonnet, Poitiers Cedex 9 86073, France
| | - Shalinee Dhayal
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter EX2 5DW, UK
| | - Noel G Morgan
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter EX2 5DW, UK
| | - Reynald Hélye
- Société d'Accélération du Transfert de Technologie (SATT) Grand Centre, 8 rue Pablo Picasso, Clermont-Ferrand 63000, France
| | - Frédéric Becq
- Laboratoire Signalisation et Transports Ioniques Membranaires (STIM), CNRS ERL 7368, Université de Poitiers, 1, rue Georges Bonnet, Poitiers Cedex 9 86073, France
| | - Hisaaki Hirose
- Institut de Pharmacologie Moléculaire et Cellulaire, CNRS UMR 7275, Université de Nice Sofia-Antipolis, 660 route des Lucioles, Valbonne 06560, France
| | - Bruno Antonny
- Institut de Pharmacologie Moléculaire et Cellulaire, CNRS UMR 7275, Université de Nice Sofia-Antipolis, 660 route des Lucioles, Valbonne 06560, France
| | - Lydie Vamparys
- Dynamique des membranes et trafic intracellulaire, Institut Jacques Monod, CNRS UMR 7592, Université Paris Diderot, Sorbonne Paris Cité, 15 rue Hélène Brion, Paris 75013, France
| | - Patrick F J Fuchs
- Dynamique des membranes et trafic intracellulaire, Institut Jacques Monod, CNRS UMR 7592, Université Paris Diderot, Sorbonne Paris Cité, 15 rue Hélène Brion, Paris 75013, France
| | - Thierry Ferreira
- Laboratoire Signalisation et Transports Ioniques Membranaires (STIM), CNRS ERL 7368, Université de Poitiers, 1, rue Georges Bonnet, Poitiers Cedex 9 86073, France
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Papillon J, Ménétret JF, Batisse C, Hélye R, Schultz P, Potier N, Lamour V. [Structural insight into negative DNA supercoiling by DNA gyrase, a bacterial type 2A DNA topoisomerase]. Med Sci (Paris) 2014; 30:1081-4. [PMID: 25537036 DOI: 10.1051/medsci/20143012009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Julie Papillon
- IGBMC, départment de biologie structurale intégrative, CNRS UMR7104, Inserm U964, université de Strasbourg, 1, rue Laurent Fries, 67400 Illkirch, France
| | - Jean-François Ménétret
- IGBMC, départment de biologie structurale intégrative, CNRS UMR7104, Inserm U964, université de Strasbourg, 1, rue Laurent Fries, 67400 Illkirch, France
| | - Claire Batisse
- IGBMC, départment de biologie structurale intégrative, CNRS UMR7104, Inserm U964, université de Strasbourg, 1, rue Laurent Fries, 67400 Illkirch, France
| | - Reynald Hélye
- Institut de chimie de Strasbourg, université de Strasbourg, CNRS UMR7177, 67000 Strasbourg, France
| | - Patrick Schultz
- IGBMC, départment de biologie structurale intégrative, CNRS UMR7104, Inserm U964, université de Strasbourg, 1, rue Laurent Fries, 67400 Illkirch, France
| | - Noëlle Potier
- Institut de chimie de Strasbourg, université de Strasbourg, CNRS UMR7177, 67000 Strasbourg, France
| | - Valérie Lamour
- IGBMC, départment de biologie structurale intégrative, CNRS UMR7104, Inserm U964, université de Strasbourg, 1, rue Laurent Fries, 67400 Illkirch, France - hôpitaux universitaires de Strasbourg, fédération de médecine translationnelle de Strasbourg, 67000 Strasbourg, France
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Papillon J, Ménétret JF, Batisse C, Hélye R, Schultz P, Potier N, Lamour V. Structural insight into negative DNA supercoiling by DNA gyrase, a bacterial type 2A DNA topoisomerase. Nucleic Acids Res 2013; 41:7815-27. [PMID: 23804759 PMCID: PMC3763546 DOI: 10.1093/nar/gkt560] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Type 2A DNA topoisomerases (Topo2A) remodel DNA topology during replication, transcription and chromosome segregation. These multisubunit enzymes catalyze the transport of a double-stranded DNA through a transient break formed in another duplex. The bacterial DNA gyrase, a target for broad-spectrum antibiotics, is the sole Topo2A enzyme able to introduce negative supercoils. We reveal here for the first time the architecture of the full-length Thermus thermophilus DNA gyrase alone and in a cleavage complex with a 155 bp DNA duplex in the presence of the antibiotic ciprofloxacin, using cryo-electron microscopy. The structural organization of the subunits of the full-length DNA gyrase points to a central role of the ATPase domain acting like a 'crossover trap' that may help to sequester the DNA positive crossover before strand passage. Our structural data unveil how DNA is asymmetrically wrapped around the gyrase-specific C-terminal β-pinwheel domains and guided to introduce negative supercoils through cooperativity between the ATPase and β-pinwheel domains. The overall conformation of the drug-induced DNA binding-cleavage complex also suggests that ciprofloxacin traps a DNA pre-transport conformation.
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Affiliation(s)
- Julie Papillon
- IGBMC, Integrated Structural Biology Department, UMR7104 CNRS, U964 Inserm, Université de Strasbourg, 67400 Illkirch, France, Institut de Chimie de Strasbourg, Université de Strasbourg, UMR7177 CNRS, 67000 Strasbourg, France and Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France
| | - Jean-François Ménétret
- IGBMC, Integrated Structural Biology Department, UMR7104 CNRS, U964 Inserm, Université de Strasbourg, 67400 Illkirch, France, Institut de Chimie de Strasbourg, Université de Strasbourg, UMR7177 CNRS, 67000 Strasbourg, France and Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France
| | - Claire Batisse
- IGBMC, Integrated Structural Biology Department, UMR7104 CNRS, U964 Inserm, Université de Strasbourg, 67400 Illkirch, France, Institut de Chimie de Strasbourg, Université de Strasbourg, UMR7177 CNRS, 67000 Strasbourg, France and Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France
| | - Reynald Hélye
- IGBMC, Integrated Structural Biology Department, UMR7104 CNRS, U964 Inserm, Université de Strasbourg, 67400 Illkirch, France, Institut de Chimie de Strasbourg, Université de Strasbourg, UMR7177 CNRS, 67000 Strasbourg, France and Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France
| | - Patrick Schultz
- IGBMC, Integrated Structural Biology Department, UMR7104 CNRS, U964 Inserm, Université de Strasbourg, 67400 Illkirch, France, Institut de Chimie de Strasbourg, Université de Strasbourg, UMR7177 CNRS, 67000 Strasbourg, France and Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France
| | - Noëlle Potier
- IGBMC, Integrated Structural Biology Department, UMR7104 CNRS, U964 Inserm, Université de Strasbourg, 67400 Illkirch, France, Institut de Chimie de Strasbourg, Université de Strasbourg, UMR7177 CNRS, 67000 Strasbourg, France and Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France
| | - Valérie Lamour
- IGBMC, Integrated Structural Biology Department, UMR7104 CNRS, U964 Inserm, Université de Strasbourg, 67400 Illkirch, France, Institut de Chimie de Strasbourg, Université de Strasbourg, UMR7177 CNRS, 67000 Strasbourg, France and Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France
- *To whom correspondence should be addressed. Tel: +33 3 88 65 32 36; Fax: +33 3 88 65 32 01;
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