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Slomp M, Koekkoek LL, Mutersbaugh M, Linville I, Luquet SH, la Fleur SE. Free-choice high-fat diet consumption reduces lateral hypothalamic GABAergic activity, without disturbing neural response to sucrose drinking in mice. Front Neurosci 2023; 17:1219569. [PMID: 37600007 PMCID: PMC10434857 DOI: 10.3389/fnins.2023.1219569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 07/21/2023] [Indexed: 08/22/2023] Open
Abstract
Nutrition can influence the brain and affect its regulation of food intake, especially that of high-palatable foods. We hypothesize that fat and sugar have interacting effects on the brain, and the lateral hypothalamus (LH) is a prime candidate to be involved in this interaction. The LH is a heterogeneous area, crucial for regulating consummatory behaviors, and integrating homeostatic and hedonic needs. GABAergic LH neurons stimulate feeding when activated, and are responsive to consummatory behavior while encoding sucrose palatability. Previously, we have shown that glutamatergic LH neurons reduce their activity in response to sugar drinking and that this response is disturbed by a free-choice high-fat diet (fcHFD). Whether GABAergic LH neurons, and their response to sugar, is affected by a fcHFD is yet unknown. Using head-fixed two-photon microscopy, we analyzed activity changes in LHVgat neuronal activity in chow or fcHFD-fed mice in response to water or sucrose drinking. A fcHFD decreased overall LHVgat neuronal activity, without disrupting the sucrose-induced increase. When focusing on the response per unique neuron, a vast majority of neurons respond inconsistently over time. Thus, a fcHFD dampens overall LH GABAergic activity, while it does not disturb the response to sucrose. The inconsistent responding over time suggests that it is not one specific subpopulation of LH GABAergic neurons that is driving these behaviors, but rather a result of the integrative properties of a complex neural network. Further research should focus on determining how this dampening of LH GABAergic activity contributes to hyperphagia and the development of obesity.
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Affiliation(s)
- Margo Slomp
- Endocrinology Laboratory, Department of Laboratory Medicine, Amsterdam UMC, Location University of Amsterdam, Amsterdam, Netherlands
- Amsterdam Neuroscience, Cellular and Molecular Mechanisms, Amsterdam, Netherlands
- Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam, Netherlands
- Metabolism and Reward Group, Royal Netherlands Academy of Arts and Sciences, Netherlands Institute of Neuroscience, Amsterdam, Netherlands
| | - Laura L. Koekkoek
- Endocrinology Laboratory, Department of Laboratory Medicine, Amsterdam UMC, Location University of Amsterdam, Amsterdam, Netherlands
- Amsterdam Neuroscience, Cellular and Molecular Mechanisms, Amsterdam, Netherlands
- Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam, Netherlands
- Metabolism and Reward Group, Royal Netherlands Academy of Arts and Sciences, Netherlands Institute of Neuroscience, Amsterdam, Netherlands
| | - Michael Mutersbaugh
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, United States
| | - Ian Linville
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, United States
| | - Serge H. Luquet
- Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, Paris, France
| | - Susanne E. la Fleur
- Endocrinology Laboratory, Department of Laboratory Medicine, Amsterdam UMC, Location University of Amsterdam, Amsterdam, Netherlands
- Amsterdam Neuroscience, Cellular and Molecular Mechanisms, Amsterdam, Netherlands
- Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam, Netherlands
- Metabolism and Reward Group, Royal Netherlands Academy of Arts and Sciences, Netherlands Institute of Neuroscience, Amsterdam, Netherlands
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2
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Herrera Moro Chao D, Kirchner MK, Pham C, Foppen E, Denis RGP, Castel J, Morel C, Montalban E, Hassouna R, Bui LC, Renault J, Mouffle C, García-Cáceres C, Tschöp MH, Li D, Martin C, Stern JE, Luquet SH. Hypothalamic astrocytes control systemic glucose metabolism and energy balance. Cell Metab 2022; 34:1532-1547.e6. [PMID: 36198294 PMCID: PMC9615252 DOI: 10.1016/j.cmet.2022.09.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 06/23/2022] [Accepted: 09/02/2022] [Indexed: 01/29/2023]
Abstract
The hypothalamus is key in the control of energy balance. However, strategies targeting hypothalamic neurons have failed to provide viable options to treat most metabolic diseases. Conversely, the role of astrocytes in systemic metabolic control has remained largely unexplored. Here, we show that obesity promotes anatomically restricted remodeling of hypothalamic astrocyte activity. In the paraventricular nucleus (PVN) of the hypothalamus, chemogenetic manipulation of astrocytes results in bidirectional control of neighboring neuron activity, autonomic outflow, glucose metabolism, and energy balance. This process recruits a mechanism involving the astrocytic control of ambient glutamate levels, which becomes defective in obesity. Positive or negative chemogenetic manipulation of PVN astrocyte Ca2+ signals, respectively, worsens or improves metabolic status of diet-induced obese mice. Collectively, these findings highlight a yet unappreciated role for astrocytes in the direct control of systemic metabolism and suggest potential targets for anti-obesity strategy.
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Affiliation(s)
| | - Matthew K Kirchner
- Neuroscience Institute, Georgia State University, Atlanta, GA 30303, USA; Center for Neuroinflammation and Cardiometabolic Diseases, Georgia State University, Atlanta, GA 30302, USA
| | - Cuong Pham
- Institute of Biology Paris Seine, Neuroscience Paris Seine, CNRS UMR8246, INSERM U1130, Sorbonne Universite, Paris 75005, France
| | - Ewout Foppen
- Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, Paris, France
| | - Raphael G P Denis
- Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, Paris, France; Institut Cochin, Université Paris Cité, INSERM U1016, CNRS UMR 8104, 75014 Paris, France
| | - Julien Castel
- Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, Paris, France
| | - Chloe Morel
- Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, Paris, France
| | - Enrica Montalban
- Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, Paris, France
| | - Rim Hassouna
- Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, Paris, France
| | - Linh-Chi Bui
- Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, Paris, France
| | - Justine Renault
- Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, Paris, France
| | - Christine Mouffle
- Institute of Biology Paris Seine, Neuroscience Paris Seine, CNRS UMR8246, INSERM U1130, Sorbonne Universite, Paris 75005, France
| | - Cristina García-Cáceres
- Helmholtz Diabetes Center (HDC) & German Center for Diabetes Research (DZD), Helmholtz Zentrum München, Neuherberg, 85764, Germany; Division of Metabolic Diseases, Technische Universität München, Munich, 80333, Germany; Medizinische Klinik and Poliklinik IV, Klinikum der Universität, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Matthias H Tschöp
- Helmholtz Diabetes Center (HDC) & German Center for Diabetes Research (DZD), Helmholtz Zentrum München, Neuherberg, 85764, Germany; Division of Metabolic Diseases, Technische Universität München, Munich, 80333, Germany
| | - Dongdong Li
- Institute of Biology Paris Seine, Neuroscience Paris Seine, CNRS UMR8246, INSERM U1130, Sorbonne Universite, Paris 75005, France
| | - Claire Martin
- Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, Paris, France
| | - Javier E Stern
- Neuroscience Institute, Georgia State University, Atlanta, GA 30303, USA; Center for Neuroinflammation and Cardiometabolic Diseases, Georgia State University, Atlanta, GA 30302, USA
| | - Serge H Luquet
- Université Paris Cité, CNRS, Unité de Biologie Fonctionnelle et Adaptative, Paris, France.
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3
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Leuillier M, Duflot T, Ménoret S, Messaoudi H, Djerada Z, Groussard D, Denis RG, Chevalier L, Karoui A, Panthu B, Thiébaut PA, Schmitz-Afonso I, Nobis S, Campart C, Henry T, Sautreuil C, Luquet SH, Beseme O, Féliu C, Peyret H, Nicol L, Henry JP, Renet S, Mulder P, Wan D, Tesson L, Heslan JM, Duché A, Jacques S, Ziegler F, Brunel V, Rautureau GJ, Monteil C, do Rego JL, do Rego JC, Afonso C, Hammock B, Madec AM, Pinet F, Richard V, Anegon I, Guignabert C, Morisseau C, Bellien J. CRISPR/Cas9-mediated inactivation of the phosphatase activity of soluble epoxide hydrolase prevents obesity and cardiac ischemic injury. J Adv Res 2022; 43:163-174. [PMID: 36585106 PMCID: PMC9811321 DOI: 10.1016/j.jare.2022.03.004] [Citation(s) in RCA: 1] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 02/28/2022] [Accepted: 03/02/2022] [Indexed: 01/07/2023] Open
Abstract
INTRODUCTION Although the physiological role of the C-terminal hydrolase domain of the soluble epoxide hydrolase (sEH-H) is well investigated, the function of its N-terminal phosphatase activity (sEH-P) remains unknown. OBJECTIVES This study aimed to assess in vivo the physiological role of sEH-P. METHODS CRISPR/Cas9 was used to generate a novel knock-in (KI) rat line lacking the sEH-P activity. RESULTS The sEH-P KI rats has a decreased metabolism of lysophosphatidic acids to monoacyglycerols. KI rats grew almost normally but with less weight and fat mass gain while insulin sensitivity was increased compared to wild-type rats. This lean phenotype was more marked in males than in female KI rats and mainly due to decreased food consumption and enhanced energy expenditure. In fact, sEH-P KI rats had an increased lipolysis allowing to supply fatty acids as fuel to potentiate brown adipose thermogenesis under resting condition and upon cold exposure. The potentiation of thermogenesis was abolished when blocking PPARγ, a nuclear receptor activated by intracellular lysophosphatidic acids, but also when inhibiting simultaneously sEH-H, showing a functional interaction between the two domains. Furthermore, sEH-P KI rats fed a high-fat diet did not gain as much weight as the wild-type rats, did not have increased fat mass and did not develop insulin resistance or hepatic steatosis. In addition, sEH-P KI rats exhibited enhanced basal cardiac mitochondrial activity associated with an enhanced left ventricular contractility and were protected against cardiac ischemia-reperfusion injury. CONCLUSION Our study reveals that sEH-P is a key player in energy and fat metabolism and contributes together with sEH-H to the regulation of cardiometabolic homeostasis. The development of pharmacological inhibitors of sEH-P appears of crucial importance to evaluate the interest of this promising therapeutic strategy in the management of obesity and cardiac ischemic complications.
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Affiliation(s)
- Matthieu Leuillier
- Normandy University, UniRouen, Inserm UMR1096 EnVI, FHU REMOD-VHF, F-76000 Rouen, France
| | - Thomas Duflot
- Normandy University, UniRouen, Inserm UMR1096 EnVI, FHU REMOD-VHF, F-76000 Rouen, France,Department of Pharmacology, Rouen University Hospital, F-76000 Rouen, France,Laboratory of Pharmacokinetics, Toxicology and Pharmacogenetics, Rouen University Hospital, F-76000 Rouen, France
| | - Séverine Ménoret
- Nantes Université, CHU Nantes, Inserm, CNRS, SFR Santé, Inserm UMS 016, CNRS UMS 3556, F-44000 Nantes, France,Nantes Université, CHU Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, F-44000 Nantes, France,Transgenesis Rat ImmunoPhenomic Platform, F-44000 Nantes, France
| | - Hind Messaoudi
- Normandy University, UniRouen, Inserm UMR1096 EnVI, FHU REMOD-VHF, F-76000 Rouen, France
| | - Zoubir Djerada
- Department of Pharmacology, EA 3801, SFR CAP-santé, Reims University Hospital, F-51095 Reims Cedex, France
| | - Déborah Groussard
- Normandy University, UniRouen, Inserm UMR1096 EnVI, FHU REMOD-VHF, F-76000 Rouen, France
| | - Raphaël G.P. Denis
- Unité de Biologie Fonctionnelle et Adaptative, Centre National la Recherche scientifique, Université de Paris, BFA, UMR 8251, CNRS, F-75013 Paris, France
| | - Laurence Chevalier
- Normandie University, Unirouen, INSA Rouen, CNRS, Groupe de Physique des Matériaux-UMR6634, F-76000 Rouen, France
| | - Ahmed Karoui
- Normandie Univ, UNIROUEN, UNICAEN, ABTE, F-76000 Rouen, France
| | - Baptiste Panthu
- CarMeN Laboratory, INSERM, INRA, INSA, Université Claude Bernard Lyon 1, F-69600 Oullins, France
| | | | - Isabelle Schmitz-Afonso
- Normandie Univ, COBRA, UMR 6014 and FR 3038, Université de Rouen, INSA de Rouen, CNRS, IRCOF, F-76821, Mont-Saint-Aignan, Cedex, France
| | - Séverine Nobis
- Animal Behavioral Platform (SCAC), HeRacLeS Inserm US51-CNRS UAR2026, Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen Normandy, F-76183 Rouen, France
| | - Cynthia Campart
- Animal Behavioral Platform (SCAC), HeRacLeS Inserm US51-CNRS UAR2026, Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen Normandy, F-76183 Rouen, France
| | - Tiphaine Henry
- Animal Behavioral Platform (SCAC), HeRacLeS Inserm US51-CNRS UAR2026, Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen Normandy, F-76183 Rouen, France
| | - Camille Sautreuil
- Normandie Univ, UNIROUEN, INSERM U1245 and Rouen University Hospital, Department of Neonatal Paediatrics and Intensive Care, F-76000, Normandy Centre for Genomic and Personalized Medicine, Rouen, France
| | - Serge H. Luquet
- Unité de Biologie Fonctionnelle et Adaptative, Centre National la Recherche scientifique, Université de Paris, BFA, UMR 8251, CNRS, F-75013 Paris, France
| | - Olivia Beseme
- Univ. Lille, CHU Lille, Inserm, Institut Pasteur de Lille, U1167 - RID-AGE - Facteurs de risque et déterminants moléculaires des maladies liées au vieillissement, F-59000 Lille, France
| | - Catherine Féliu
- Department of Pharmacology, EA 3801, SFR CAP-santé, Reims University Hospital, F-51095 Reims Cedex, France
| | - Hélène Peyret
- Department of Pharmacology, EA 3801, SFR CAP-santé, Reims University Hospital, F-51095 Reims Cedex, France
| | - Lionel Nicol
- Normandy University, UniRouen, Inserm UMR1096 EnVI, FHU REMOD-VHF, F-76000 Rouen, France
| | - Jean-Paul Henry
- Normandy University, UniRouen, Inserm UMR1096 EnVI, FHU REMOD-VHF, F-76000 Rouen, France
| | - Sylvanie Renet
- Normandy University, UniRouen, Inserm UMR1096 EnVI, FHU REMOD-VHF, F-76000 Rouen, France
| | - Paul Mulder
- Normandy University, UniRouen, Inserm UMR1096 EnVI, FHU REMOD-VHF, F-76000 Rouen, France
| | - Debin Wan
- Department of Entomology and Nematology, and UCD Comprehensive Cancer Center, University of California, Davis, CA 95616, USA
| | - Laurent Tesson
- Nantes Université, CHU Nantes, Inserm, CNRS, SFR Santé, Inserm UMS 016, CNRS UMS 3556, F-44000 Nantes, France,Nantes Université, CHU Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, F-44000 Nantes, France,Transgenesis Rat ImmunoPhenomic Platform, F-44000 Nantes, France
| | - Jean-Marie Heslan
- Nantes Université, CHU Nantes, Inserm, CNRS, SFR Santé, Inserm UMS 016, CNRS UMS 3556, F-44000 Nantes, France,Nantes Université, CHU Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, F-44000 Nantes, France,GenoCellEdit Platform, F-44000 Nantes, France
| | - Angéline Duché
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Genom'IC Platform, Bâtiment Gustave Roussy, F-75014 Paris, France
| | - Sébastien Jacques
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Genom'IC Platform, Bâtiment Gustave Roussy, F-75014 Paris, France
| | - Frédéric Ziegler
- Department of General Biochemistry, Rouen University Hospital, 76000 Rouen, France
| | - Valéry Brunel
- Department of General Biochemistry, Rouen University Hospital, 76000 Rouen, France
| | - Gilles J.P. Rautureau
- Centre de Résonance Magnétique Nucléaire à Très hauts Champs (FRE 2034, CNRS, Ecole Normale Supérieure de Lyon, Université Claude Bernard Lyon 1), Université de Lyon, F-69100 Villeurbanne, France
| | | | - Jean-Luc do Rego
- Animal Behavioral Platform (SCAC), HeRacLeS Inserm US51-CNRS UAR2026, Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen Normandy, F-76183 Rouen, France
| | - Jean-Claude do Rego
- Animal Behavioral Platform (SCAC), HeRacLeS Inserm US51-CNRS UAR2026, Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen Normandy, F-76183 Rouen, France
| | - Carlos Afonso
- Normandie Univ, COBRA, UMR 6014 and FR 3038, Université de Rouen, INSA de Rouen, CNRS, IRCOF, F-76821, Mont-Saint-Aignan, Cedex, France
| | - Bruce Hammock
- Department of Entomology and Nematology, and UCD Comprehensive Cancer Center, University of California, Davis, CA 95616, USA
| | - Anne-Marie Madec
- CarMeN Laboratory, INSERM, INRA, INSA, Université Claude Bernard Lyon 1, F-69600 Oullins, France
| | - Florence Pinet
- Institut Cochin, U1016 INSERM - UMR8104, CNRS - Université Paris Descartes, Genom'IC Platform, Bâtiment Gustave Roussy, F-75014 Paris, France
| | - Vincent Richard
- Normandy University, UniRouen, Inserm UMR1096 EnVI, FHU REMOD-VHF, F-76000 Rouen, France,Department of Pharmacology, Rouen University Hospital, F-76000 Rouen, France
| | - Ignacio Anegon
- Nantes Université, CHU Nantes, Inserm, CNRS, SFR Santé, Inserm UMS 016, CNRS UMS 3556, F-44000 Nantes, France,Nantes Université, CHU Nantes, Inserm, Centre de Recherche en Transplantation et Immunologie, UMR 1064, ITUN, F-44000 Nantes, France,Transgenesis Rat ImmunoPhenomic Platform, F-44000 Nantes, France
| | - Christophe Guignabert
- INSERM UMR_S 999, Hôpital Marie Lannelongue, F-92350 Le Plessis-Robinson, France,Faculté de Médecine, Université Paris-Sud, Université Paris-Saclay, F-94270 Le Kremlin-Bicêtre, France
| | - Christophe Morisseau
- Department of Entomology and Nematology, and UCD Comprehensive Cancer Center, University of California, Davis, CA 95616, USA
| | - Jérémy Bellien
- Normandy University, UniRouen, Inserm UMR1096 EnVI, FHU REMOD-VHF, F-76000 Rouen, France; Department of Pharmacology, Rouen University Hospital, F-76000 Rouen, France.
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4
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Koekkoek LL, Slomp M, Castel J, Mutersbaugh M, Linville I, Serlie MJ, Luquet SH, la Fleur SE. Disruption of lateral hypothalamic calorie detection by a free choice high fat diet. FASEB J 2021; 35:e21804. [PMID: 34383974 DOI: 10.1096/fj.202100762r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 05/07/2021] [Revised: 06/23/2021] [Accepted: 07/01/2021] [Indexed: 11/11/2022]
Abstract
During the last few decades, the consumption of low-calorie sweeteners, as a substitute for caloric sweeteners, has sharply increased. Although research shows that caloric versus low-calorie sweeteners can have differential effects on the brain, it is unknown which neuronal populations are responsible for detecting the difference between the two types of sweeteners. Using in vivo two-photon calcium imaging, we investigated how drinking sucrose or sucralose (a low-calorie sweetener) affects the activity of glutamatergic neurons in the lateral hypothalamus. Furthermore, we explored the consequences of consuming a free-choice high fat diet on the calorie detection abilities of these glutamatergic neurons. We found that glutamatergic neurons indeed can discriminate sucrose from water and sucralose, and that consumption of a free-choice high fat diet shifts the glutamatergic neuronal response from sucrose-specific to sucralose-specific, thereby disrupting calorie detection. These results highlight the disruptive effects of a diet high in saturated fat on calorie detection in the lateral hypothalamus.
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Affiliation(s)
- Laura L Koekkoek
- Laboratory of Endocrinology, Department of Clinical Chemistry, Amsterdam Neuroscience, Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam University Medical Center, location AMC, University of Amsterdam, Amsterdam, The Netherlands.,Department of Endocrinology and Metabolism, Amsterdam Neuroscience, Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam University Medical Center, location AMC, University of Amsterdam, Amsterdam, The Netherlands.,Metabolism and Reward Group, Netherlands Institute for Neuroscience, an Institute of the Royal Netherlands Academy of Arts and Sciences, Amsterdam, The Netherlands
| | - Margo Slomp
- Laboratory of Endocrinology, Department of Clinical Chemistry, Amsterdam Neuroscience, Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam University Medical Center, location AMC, University of Amsterdam, Amsterdam, The Netherlands.,Department of Endocrinology and Metabolism, Amsterdam Neuroscience, Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam University Medical Center, location AMC, University of Amsterdam, Amsterdam, The Netherlands.,Metabolism and Reward Group, Netherlands Institute for Neuroscience, an Institute of the Royal Netherlands Academy of Arts and Sciences, Amsterdam, The Netherlands
| | - Julien Castel
- BFA, UMR 8251, CNRS, Université de Paris, Paris, France
| | - Michael Mutersbaugh
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Ian Linville
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, USA
| | - Mireille J Serlie
- Department of Endocrinology and Metabolism, Amsterdam Neuroscience, Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam University Medical Center, location AMC, University of Amsterdam, Amsterdam, The Netherlands
| | | | - Susanne E la Fleur
- Laboratory of Endocrinology, Department of Clinical Chemistry, Amsterdam Neuroscience, Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam University Medical Center, location AMC, University of Amsterdam, Amsterdam, The Netherlands.,Department of Endocrinology and Metabolism, Amsterdam Neuroscience, Amsterdam Gastroenterology, Endocrinology and Metabolism, Amsterdam University Medical Center, location AMC, University of Amsterdam, Amsterdam, The Netherlands.,Metabolism and Reward Group, Netherlands Institute for Neuroscience, an Institute of the Royal Netherlands Academy of Arts and Sciences, Amsterdam, The Netherlands
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5
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Minniti ME, Pedrelli M, Vedin L, Delbès A, Denis RG, Öörni K, Sala C, Pirazzini C, Thiagarajan D, Nurmi HJ, Grompe M, Mills K, Garagnani P, Ellis EC, Strom SC, Luquet SH, Wilson EM, Bial J, Steffensen KR, Parini P. Insights From Liver-Humanized Mice on Cholesterol Lipoprotein Metabolism and LXR-Agonist Pharmacodynamics in Humans. Hepatology 2020; 72:656-670. [PMID: 31785104 PMCID: PMC7496592 DOI: 10.1002/hep.31052] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 11/13/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND AIMS Genetically modified mice have been used extensively to study human disease. However, the data gained are not always translatable to humans because of major species differences. Liver-humanized mice (LHM) are considered a promising model to study human hepatic and systemic metabolism. Therefore, we aimed to further explore their lipoprotein metabolism and to characterize key hepatic species-related, physiological differences. APPROACH AND RESULTS Fah-/- , Rag2-/- , and Il2rg-/- knockout mice on the nonobese diabetic (FRGN) background were repopulated with primary human hepatocytes from different donors. Cholesterol lipoprotein profiles of LHM showed a human-like pattern, characterized by a high ratio of low-density lipoprotein to high-density lipoprotein, and dependency on the human donor. This pattern was determined by a higher level of apolipoprotein B100 in circulation, as a result of lower hepatic mRNA editing and low-density lipoprotein receptor expression, and higher levels of circulating proprotein convertase subtilisin/kexin type 9. As a consequence, LHM lipoproteins bind to human aortic proteoglycans in a pattern similar to human lipoproteins. Unexpectedly, cholesteryl ester transfer protein was not required to determine the human-like cholesterol lipoprotein profile. Moreover, LHM treated with GW3965 mimicked the negative lipid outcomes of the first human trial of liver X receptor stimulation (i.e., a dramatic increase of cholesterol and triglycerides in circulation). Innovatively, LHM allowed the characterization of these effects at a molecular level. CONCLUSIONS LHM represent an interesting translatable model of human hepatic and lipoprotein metabolism. Because several metabolic parameters displayed donor dependency, LHM may also be used in studies for personalized medicine.
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Affiliation(s)
- Mirko E. Minniti
- Department of Laboratory MedicineDivision of Clinical ChemistryKarolinska InstituteStockholmSweden
| | - Matteo Pedrelli
- Department of Laboratory MedicineDivision of Clinical ChemistryKarolinska InstituteStockholmSweden
| | - Lise‐Lotte Vedin
- Department of Laboratory MedicineDivision of Clinical ChemistryKarolinska InstituteStockholmSweden
| | - Anne‐Sophie Delbès
- Unit of Functional and Adaptive BiologyParis Diderot UniversitySorbonne Paris CitéParisFrance
| | - Raphaël G.P. Denis
- Unit of Functional and Adaptive BiologyParis Diderot UniversitySorbonne Paris CitéParisFrance
| | - Katariina Öörni
- Atherosclerosis Research LaboratoryWihuri Research InstituteHelsinkiFinland
| | - Claudia Sala
- Department of Physics and AstronomyUniversity of BolognaBolognaItaly
| | | | - Divya Thiagarajan
- Department of Laboratory MedicineClinical Research CenterKarolinska InstituteStockholmSweden
| | - Harri J. Nurmi
- Atherosclerosis Research LaboratoryWihuri Research InstituteHelsinkiFinland,Center of Excellence in Translational Cancer BiologyUniversity of HelsinkiBiomedicum HelsinkiHelsinkiFinland
| | - Markus Grompe
- Department of PediatricsOregon Stem Cell CenterOregon Health and Science UniversityPortlandOR,Yecuris CorporationTualatinOR
| | - Kevin Mills
- Center for Inborn Errors of MetabolismUniversity College LondonLondonUK
| | - Paolo Garagnani
- Department of Laboratory MedicineDivision of Clinical ChemistryKarolinska InstituteStockholmSweden,Department of Experimental, Diagnostic, and Specialty Medicine, and “L. Galvani” Interdepartmental Research CenterUniversity of BolognaBolognaItaly
| | - Ewa C.S. Ellis
- Department of Clinical ScienceIntervention and TechnologyDivision of SurgeryKarolinska Institute at Karolinska University Hospital HuddingeStockholmSweden
| | - Stephen C. Strom
- Department of Laboratory MedicineDivision of PathologyKarolinska InstituteStockholmSweden
| | - Serge H. Luquet
- Unit of Functional and Adaptive BiologyParis Diderot UniversitySorbonne Paris CitéParisFrance
| | | | | | - Knut R. Steffensen
- Department of Laboratory MedicineDivision of Clinical ChemistryKarolinska InstituteStockholmSweden
| | - Paolo Parini
- Department of Laboratory MedicineDivision of Clinical ChemistryKarolinska InstituteStockholmSweden,Department of MedicineMetabolism UnitKarolinska Institute at Karolinska University Hospital HuddingeStockholmSweden,Patient Area Nephrology and Endocrinology, Inflammation and Infection ThemeKarolinska University HospitalStockholmSweden
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6
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Berland C, Montalban E, Perrin E, Di Miceli M, Nakamura Y, Martinat M, Sullivan M, Davis XS, Shenasa MA, Martin C, Tolu S, Marti F, Caille S, Castel J, Perez S, Salinas CG, Morel C, Hecksher-Sørensen J, Cador M, Fioramonti X, Tschöp MH, Layé S, Venance L, Faure P, Hnasko TS, Small DM, Gangarossa G, Luquet SH. Circulating Triglycerides Gate Dopamine-Associated Behaviors through DRD2-Expressing Neurons. Cell Metab 2020; 31:773-790.e11. [PMID: 32142669 PMCID: PMC7250662 DOI: 10.1016/j.cmet.2020.02.010] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 12/16/2019] [Accepted: 02/13/2020] [Indexed: 12/31/2022]
Abstract
Energy-dense food alters dopaminergic (DA) transmission in the mesocorticolimbic (MCL) system and can promote reward dysfunctions, compulsive feeding, and weight gain. Yet the mechanisms by which nutrients influence the MCL circuitry remain elusive. Here, we show that nutritional triglycerides (TGs), a conserved post-prandial metabolic signature among mammals, can be metabolized within the MCL system and modulate DA-associated behaviors by gating the activity of dopamine receptor subtype 2 (DRD2)-expressing neurons through a mechanism that involves the action of the lipoprotein lipase (LPL). Further, we show that in humans, post-prandial TG excursions modulate brain responses to food cues in individuals carrying a genetic risk for reduced DRD2 signaling. Collectively, these findings unveil a novel mechanism by which dietary TGs directly alter signaling in the reward circuit to regulate behavior, thereby providing a new mechanistic basis by which energy-rich diets may lead to (mal)adaptations in DA signaling that underlie reward deficit and compulsive behavior.
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Affiliation(s)
- Chloé Berland
- Université de Paris, BFA, UMR 8251, CNRS, F-75014 Paris, France; Helmholtz Diabetes Center, Helmholtz Zentrum München, German Research Center for Environmental Health, München, Neuherberg, Germany
| | | | - Elodie Perrin
- Center for Interdisciplinary Research in Biology, College de France, INSERM U1050, CNRS UMR 7241, Labex Memolife, 75005 Paris, France
| | - Mathieu Di Miceli
- Université Bordeaux, INRA, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France
| | - Yuko Nakamura
- The Modern Diet and Physiology Research Center, New Haven, CT, USA; Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Maud Martinat
- Université Bordeaux, INRA, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France
| | - Mary Sullivan
- The Modern Diet and Physiology Research Center, New Haven, CT, USA; Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Xue S Davis
- The Modern Diet and Physiology Research Center, New Haven, CT, USA; Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | - Mohammad Ali Shenasa
- Department of Neurosciences, University of California, San Diego, La Jolla, CA, USA
| | - Claire Martin
- Université de Paris, BFA, UMR 8251, CNRS, F-75014 Paris, France
| | - Stefania Tolu
- Sorbonne Université, CNRS UMR 8246, INSERM, Neurosciences Paris Seine, Institut de Biologie Paris-Seine, Paris, France
| | - Fabio Marti
- Sorbonne Université, CNRS UMR 8246, INSERM, Neurosciences Paris Seine, Institut de Biologie Paris-Seine, Paris, France
| | - Stephanie Caille
- Université Bordeaux, Institut de Neurosciences Cognitives et Intégratives d'Aquitaine, CNRS, UMR5287, 33076 Bordeaux, France
| | - Julien Castel
- Université de Paris, BFA, UMR 8251, CNRS, F-75014 Paris, France
| | - Sylvie Perez
- Center for Interdisciplinary Research in Biology, College de France, INSERM U1050, CNRS UMR 7241, Labex Memolife, 75005 Paris, France
| | | | - Chloé Morel
- Université de Paris, BFA, UMR 8251, CNRS, F-75014 Paris, France
| | - Jacob Hecksher-Sørensen
- Global Research, Novo Nordisk A/S, Måløv, Denmark; Gubra ApS, Hørsholm Kongevej 11B, 2970 Hørsholm, Denmark
| | - Martine Cador
- Université Bordeaux, Institut de Neurosciences Cognitives et Intégratives d'Aquitaine, CNRS, UMR5287, 33076 Bordeaux, France
| | - Xavier Fioramonti
- Université Bordeaux, INRA, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France
| | - Matthias H Tschöp
- Helmholtz Diabetes Center, Helmholtz Zentrum München, German Research Center for Environmental Health, München, Neuherberg, Germany; Division of Metabolic Diseases, TUM, Munich, Germany; Institute for Advanced Study, TUM, Munich, Germany
| | - Sophie Layé
- Université Bordeaux, INRA, Bordeaux INP, NutriNeuro, UMR 1286, F-33000 Bordeaux, France
| | - Laurent Venance
- Center for Interdisciplinary Research in Biology, College de France, INSERM U1050, CNRS UMR 7241, Labex Memolife, 75005 Paris, France
| | - Philippe Faure
- Sorbonne Université, CNRS UMR 8246, INSERM, Neurosciences Paris Seine, Institut de Biologie Paris-Seine, Paris, France
| | - Thomas S Hnasko
- Department of Neurosciences, University of California, San Diego, La Jolla, CA, USA; Research Service VA San Diego Healthcare System, San Diego, CA 92161, USA
| | - Dana M Small
- The Modern Diet and Physiology Research Center, New Haven, CT, USA; Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | | | - Serge H Luquet
- Université de Paris, BFA, UMR 8251, CNRS, F-75014 Paris, France; The Modern Diet and Physiology Research Center, New Haven, CT, USA.
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7
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Affiliation(s)
- Serge H. Luquet
- Paris Diderot University, Paris, France
- *Correspondence: Serge H. Luquet
| | - Hubert Vaudry
- Université de Rouen, Mont-Saint-Aignan, France
- Hubert Vaudry
| | - Riccarda Granata
- Department of Medical Sciences, University of Turin, Turin, Italy
- Riccarda Granata
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8
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Laurans L, Venteclef N, Haddad Y, Chajadine M, Alzaid F, Metghalchi S, Sovran B, Denis RGP, Dairou J, Cardellini M, Moreno-Navarrete JM, Straub M, Jegou S, McQuitty C, Viel T, Esposito B, Tavitian B, Callebert J, Luquet SH, Federici M, Fernandez-Real JM, Burcelin R, Launay JM, Tedgui A, Mallat Z, Sokol H, Taleb S. Genetic deficiency of indoleamine 2,3-dioxygenase promotes gut microbiota-mediated metabolic health. Nat Med 2018; 24:1113-1120. [PMID: 29942089 DOI: 10.1038/s41591-018-0060-4] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 04/23/2018] [Indexed: 02/07/2023]
Abstract
The association between altered gut microbiota, intestinal permeability, inflammation and cardiometabolic diseases is becoming increasingly clear but remains poorly understood1,2. Indoleamine 2,3-dioxygenase is an enzyme induced in many types of immune cells, including macrophages in response to inflammatory stimuli, and catalyzes the degradation of tryptophan along the kynurenine pathway. Indoleamine 2,3-dioxygenase activity is better known for its suppression of effector T cell immunity and its activation of regulatory T cells3,4. However, high indoleamine 2,3-dioxygenase activity predicts worse cardiovascular outcome5-9 and may promote atherosclerosis and vascular inflammation6, suggesting a more complex role in chronic inflammatory settings. Indoleamine 2,3-dioxygenase activity is also increased in obesity10-13, yet its role in metabolic disease is still unexplored. Here, we show that obesity is associated with an increase of intestinal indoleamine 2,3-dioxygenase activity, which shifts tryptophan metabolism from indole derivative and interleukin-22 production toward kynurenine production. Indoleamine 2,3-dioxygenase deletion or inhibition improves insulin sensitivity, preserves the gut mucosal barrier, decreases endotoxemia and chronic inflammation, and regulates lipid metabolism in liver and adipose tissues. These beneficial effects are due to rewiring of tryptophan metabolism toward a microbiota-dependent production of interleukin-22 and are abrogated after treatment with a neutralizing anti-interleukin-22 antibody. In summary, we identify an unexpected function of indoleamine 2,3-dioxygenase in the fine tuning of intestinal tryptophan metabolism with major consequences on microbiota-dependent control of metabolic disease, which suggests indoleamine 2,3-dioxygenase as a potential therapeutic target.
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Affiliation(s)
- Ludivine Laurans
- Institut National de la Santé et de la Recherche Médicale, U970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France
| | - Nicolas Venteclef
- Institut National de la Santé et de la Recherche Médicale, UMRS 1138, Sorbonne Universités, UPMC Université Paris 06, Sorbonne Paris Cité, Université Paris Descartes, Université Paris Diderot, and Centre de Recherche des Cordeliers, Paris, France
| | - Yacine Haddad
- Institut National de la Santé et de la Recherche Médicale, U970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France
| | - Mouna Chajadine
- Institut National de la Santé et de la Recherche Médicale, U970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France
| | - Fawaz Alzaid
- Institut National de la Santé et de la Recherche Médicale, UMRS 1138, Sorbonne Universités, UPMC Université Paris 06, Sorbonne Paris Cité, Université Paris Descartes, Université Paris Diderot, and Centre de Recherche des Cordeliers, Paris, France
| | - Sarvenaz Metghalchi
- Institut National de la Santé et de la Recherche Médicale, U970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France
| | - Bruno Sovran
- Micalis Institute, Institut National de la Recherche Agronomique, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
| | - Raphael G P Denis
- Unité de Biologie Fonctionnelle et Adaptative, Centre National la Recherche Scientifique, UMR 8251, Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Julien Dairou
- UMR 8601 CNRS, Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, Université Paris Descartes-Sorbonne Paris Cité, Paris, France
| | - Marina Cardellini
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Jose-Maria Moreno-Navarrete
- Department of Diabetes and Endocrinology, Hospital de Girona "Dr Josep Trueta", Girona, Spain
- CIBERobn Pathophysiology of Obesity and Nutrition, Instituto de Salud Carlos III, Madrid, Spain
| | - Marjolene Straub
- Sorbonne Université, École normale supérieure, PSL Research University, CNRS, INSERM, AP-HP, Laboratoire de biomolécules, Hôpital Saint-Antoine, Paris, France
| | - Sarah Jegou
- Sorbonne Université, École normale supérieure, PSL Research University, CNRS, INSERM, AP-HP, Laboratoire de biomolécules, Hôpital Saint-Antoine, Paris, France
| | - Claire McQuitty
- Sorbonne Université, École normale supérieure, PSL Research University, CNRS, INSERM, AP-HP, Laboratoire de biomolécules, Hôpital Saint-Antoine, Paris, France
| | - Thomas Viel
- Institut National de la Santé et de la Recherche Médicale, U970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France
| | - Bruno Esposito
- Institut National de la Santé et de la Recherche Médicale, U970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France
| | - Bertrand Tavitian
- Institut National de la Santé et de la Recherche Médicale, U970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France
| | - Jacques Callebert
- Service de Biochimie, Assistance Publique Hôpitaux de Paris, and INSERM UMR942, Hôpital Lariboisière, Paris, France
| | - Serge H Luquet
- Unité de Biologie Fonctionnelle et Adaptative, Centre National la Recherche Scientifique, UMR 8251, Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Massimo Federici
- Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | | | - Remy Burcelin
- Institut des maladies métaboliques et cardiovasculaires, INSERM UMR1048, Toulouse, France
| | - Jean-Marie Launay
- Service de Biochimie, Assistance Publique Hôpitaux de Paris, and INSERM UMR942, Hôpital Lariboisière, Paris, France
| | - Alain Tedgui
- Institut National de la Santé et de la Recherche Médicale, U970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France
| | - Ziad Mallat
- Institut National de la Santé et de la Recherche Médicale, U970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France
- Division of Cardiovascular Medicine, University of Cambridge, Addenbrooke's Hospital, Cambridge, UK
| | - Harry Sokol
- Micalis Institute, Institut National de la Recherche Agronomique, AgroParisTech, Université Paris-Saclay, Jouy-en-Josas, France
- Sorbonne Université, École normale supérieure, PSL Research University, CNRS, INSERM, AP-HP, Laboratoire de biomolécules, Hôpital Saint-Antoine, Paris, France
- Department of Gastroenterology, Saint Antoine Hospital, Assistance Publique - Hopitaux de Paris, Sorbonne Université, Paris, France
| | - Soraya Taleb
- Institut National de la Santé et de la Recherche Médicale, U970, Paris Cardiovascular Research Center, and Université Paris-Descartes, Paris, France.
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Delbès AS, Castel J, Denis RGP, Morel C, Quiñones M, Everard A, Cani PD, Massiera F, Luquet SH. Prebiotics Supplementation Impact on the Reinforcing and Motivational Aspect of Feeding. Front Endocrinol (Lausanne) 2018; 9:273. [PMID: 29896158 PMCID: PMC5987188 DOI: 10.3389/fendo.2018.00273] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 05/09/2018] [Indexed: 11/25/2022] Open
Abstract
Energy homeostasis is tightly regulated by the central nervous system which responds to nervous and circulating inputs to adapt food intake and energy expenditure. However, the rewarding and motivational aspect of food is tightly dependent of dopamine (DA) release in mesocorticolimbic (MCL) system and could be operant in uncontrolled caloric intake and obesity. Accumulating evidence indicate that manipulating the microbiota-gut-brain axis through prebiotic supplementation can have beneficial impact of the host appetite and body weight. However, the consequences of manipulating the implication of the microbiota-gut-brain axis in the control motivational and hedonic/reinforcing aspects of food are still underexplored. In this study, we investigate whether and how dietary prebiotic fructo-oligosaccharides (FOS) could oppose, or revert, the change in hedonic and homeostatic control of feeding occurring after a 2-months exposure to high-fat high-sugar (HFHS) diet. The reinforcing and motivational components of food reward were assessed using a two-food choice paradigm and a food operant behavioral test in mice exposed to FOS either during or after HFHS exposure. We also performed mRNA expression analysis for key genes involved in limbic and hypothalamic control of feeding. We show in a preventive-like approach, FOS addition of HFHS diet had beneficial impact of hypothalamic neuropeptides, and decreased the operant performance for food but only after an overnight fast while it did not prevent the imbalance in mesolimbic markers for DA signaling induced by palatable diet exposure nor the spontaneous tropism for palatable food when given the choice. However, when FOS was added to control diet after chronic HFHS exposure, although it did not significantly alter body weight loss, it greatly decreased palatable food tropism and consumption and was associated with normalization of MCL markers for DA signaling. We conclude that the nature of the diet (regular chow or HFHS) as well as the timing at which prebiotic supplementation is introduced (preventive or curative) greatly influence the efficacy of the gut-microbiota-brain axis. This crosstalk selectively alters the hedonic or motivational drive to eat and triggers molecular changes in neural substrates involved in the homeostatic and non-homeostatic control of body weight.
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Affiliation(s)
- Anne-Sophie Delbès
- Université Paris Diderot, Sorbonne Paris Cité, Unité de Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Paris, France
| | - Julien Castel
- Université Paris Diderot, Sorbonne Paris Cité, Unité de Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Paris, France
| | - Raphaël G. P. Denis
- Université Paris Diderot, Sorbonne Paris Cité, Unité de Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Paris, France
| | - Chloé Morel
- Université Paris Diderot, Sorbonne Paris Cité, Unité de Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Paris, France
| | - Mar Quiñones
- Université Paris Diderot, Sorbonne Paris Cité, Unité de Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Paris, France
| | - Amandine Everard
- Walloon Excellence in Life Sciences and Biotechnology (WELBIO), Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Université catholique de Louvain, Brussels, Belgium
| | - Patrice D. Cani
- Walloon Excellence in Life Sciences and Biotechnology (WELBIO), Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Université catholique de Louvain, Brussels, Belgium
| | - Florence Massiera
- Laboratoire de Recherche Nutritionnelle KOT CEPRODI SA, Paris, France
| | - Serge H. Luquet
- Université Paris Diderot, Sorbonne Paris Cité, Unité de Biologie Fonctionnelle et Adaptative, CNRS UMR 8251, Paris, France
- *Correspondence: Serge H. Luquet,
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Chelminski Y, Magnan C, Luquet SH, Everard A, Meunier N, Gurden H, Martin C. Odor-Induced Neuronal Rhythms in the Olfactory Bulb Are Profoundly Modified in ob/ob Obese Mice. Front Physiol 2017; 8:2. [PMID: 28154537 PMCID: PMC5244437 DOI: 10.3389/fphys.2017.00002] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [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: 08/30/2016] [Accepted: 01/03/2017] [Indexed: 01/03/2023] Open
Abstract
Leptin, the product of the Ob(Lep) gene, is a peptide hormone that plays a major role in maintaining the balance between food intake and energy expenditure. In the brain, leptin receptors are expressed by hypothalamic cells but also in the olfactory bulb, the first central structure coding for odors, suggesting a precise function of this hormone in odor-evoked activities. Although olfaction plays a key role in feeding behavior, the ability of the olfactory bulb to integrate the energy-related signal leptin is still missing. Therefore, we studied the fate of odor-induced activity in the olfactory bulb in the genetic context of leptin deficiency using the obese ob/ob mice. By means of an odor discrimination task with concomitant local field potential recordings, we showed that ob/ob mice perform better than wild-type (WT) mice in the early stage of the task. This behavioral gain of function was associated in parallel with profound changes in neuronal oscillations in the olfactory bulb. The distribution of the peaks in the gamma frequency range was shifted toward higher frequencies in ob/ob mice compared to WT mice before learning. More notably, beta oscillatory activity, which has been shown previously to be correlated with olfactory discrimination learning, was longer and stronger in expert ob/ob mice after learning. Since oscillations in the olfactory bulb emerge from mitral to granule cell interactions, our results suggest that cellular dynamics in the olfactory bulb are deeply modified in ob/ob mice in the context of olfactory learning.
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Affiliation(s)
- Yan Chelminski
- UMR 8165 Centre National de la Recherche Scientifique, IMNC, Paris Sud University, Paris Diderot University Orsay, France
| | - Christophe Magnan
- UMR 8251 Centre National de la Recherche Scientifique, BFA, Paris Diderot University, Sorbonne Paris Cité University Paris, France
| | - Serge H Luquet
- UMR 8251 Centre National de la Recherche Scientifique, BFA, Paris Diderot University, Sorbonne Paris Cité University Paris, France
| | - Amandine Everard
- UMR 8251 Centre National de la Recherche Scientifique, BFA, Paris Diderot University, Sorbonne Paris Cité University Paris, France
| | - Nicolas Meunier
- INRA, UR1197 NeuroBiologie de l'OlfactionJouy-en-Josas, France; Université de Versailles St-Quentin en YvelinesVersailles, France
| | - Hirac Gurden
- UMR 8165 Centre National de la Recherche Scientifique, IMNC, Paris Sud University, Paris Diderot UniversityOrsay, France; UMR 8251 Centre National de la Recherche Scientifique, BFA, Paris Diderot University, Sorbonne Paris Cité UniversityParis, France
| | - Claire Martin
- UMR 8165 Centre National de la Recherche Scientifique, IMNC, Paris Sud University, Paris Diderot UniversityOrsay, France; UMR 8251 Centre National de la Recherche Scientifique, BFA, Paris Diderot University, Sorbonne Paris Cité UniversityParis, France
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