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Sun L, Pang Y, Wang X, Wu Q, Liu H, Liu B, Liu G, Ye M, Kong W, Jiang C. Ablation of gut microbiota alleviates obesity-induced hepatic steatosis and glucose intolerance by modulating bile acid metabolism in hamsters. Acta Pharm Sin B 2019; 9:702-710. [PMID: 31384531 PMCID: PMC6664038 DOI: 10.1016/j.apsb.2019.02.004] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 12/30/2018] [Accepted: 01/18/2019] [Indexed: 02/07/2023] Open
Abstract
Since metabolic process differs between humans and mice, studies were performed in hamsters, which are generally considered to be a more appropriate animal model for studies of obesity-related metabolic disorders. The modulation of gut microbiota, bile acids and the farnesoid X receptor (FXR) axis is correlated with obesity-induced insulin resistance and hepatic steatosis in mice. However, the interactions among the gut microbiota, bile acids and FXR in metabolic disorders remained largely unexplored in hamsters. In the current study, hamsters fed a 60% high-fat diet (HFD) were administered vehicle or an antibiotic cocktail by gavage twice a week for four weeks. Antibiotic treatment alleviated HFD-induced glucose intolerance, hepatic steatosis and inflammation accompanied with decreased hepatic lipogenesis and elevated thermogenesis in subcutaneous white adipose tissue (sWAT). In the livers of antibiotic-treated hamsters, cytochrome P450 family 7 subfamily B member 1 (CYP7B1) in the alternative bile acid synthesis pathway was upregulated, contributing to a more hydrophilic bile acid profile with increased tauro-β-muricholic acid (TβMCA). The intestinal FXR signaling was suppressed but remained unchanged in the liver. This study is of potential translational significance in determining the role of gut microbiota-mediated bile acid metabolism in modulating diet-induced glucose intolerance and hepatic steatosis in the hamster.
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Key Words
- ALT, alanine amino-transferase
- AST, aspartate transaminase
- AUC, area under curve
- ApoB, apolipoprotein B
- BAs, bile acids
- BSH, bile acid hydrolase
- CA, cholic acid
- CAPE, caffeic acid phenethyl ester
- CDCA, chenodeoxycholic acid
- CETP, cholesterol ester transfer protein
- CYP27A1, cytochrome P450 family 27 subfamily A member 1
- CYP7A1, cytochrome P450 family 7 subfamily A member 1
- CYP7B1
- CYP7B1, cytochrome P450 family 7 subfamily B member 1
- CYP8B1, cytochrome P450 family 8 subfamily B member 1
- DCA, deoxycholic acid
- FGF15/19, fibroblast growth factor 15/19
- FXR
- FXR, farnesoid X receptor
- GCA, glycocholic acid
- GCDCA, glycochenodeoxycholic acid
- GTT, glucose tolerance test
- Gut microbiota
- H&E, hematoxylin and eosin
- HFD, high fat diet
- ITT, insulin tolerance test
- LCA, lithocholic acid
- Metabolic disorders
- NAFLD, non-alcoholic fatty liver disease
- NASH, non-alcoholic steatohepatitis
- PBA/SBA, primary bile acids to secondary bile acids
- T2D, type 2 diabetes
- TC, total cholesterol
- TCA, taurocholic acid
- TG, triglycerides
- TβMCA
- TβMCA, tauro-β-muricholic acid
- UDCA, ursodeoxycholic acid
- UPLC–MS/MS, ultra performance liquid chromatography–tandem mass spectrometry
- VLDL, very low-density lipoprotein
- eWAT, epididymal white adipose tissue
- sWAT, subcutaneous white adipose tissue
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Affiliation(s)
- Lulu Sun
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, and the Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing 100191, China
| | - Yuanyuan Pang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, and the Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing 100191, China
| | - Xuemei Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, and the Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing 100191, China
| | - Qing Wu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, and the Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing 100191, China
| | - Huiying Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, and the Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing 100191, China
| | - Bo Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, and the Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing 100191, China
| | - George Liu
- Institute of Cardiovascular Sciences and Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Peking University, Beijing 100191, China
| | - Min Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Wei Kong
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, and the Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing 100191, China
| | - Changtao Jiang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, and the Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing 100191, China
- Corresponding author.
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7
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Fabbiano S, Suárez-Zamorano N, Chevalier C, Lazarević V, Kieser S, Rigo D, Leo S, Veyrat-Durebex C, Gaïa N, Maresca M, Merkler D, Gomez de Agüero M, Macpherson A, Schrenzel J, Trajkovski M. Functional Gut Microbiota Remodeling Contributes to the Caloric Restriction-Induced Metabolic Improvements. Cell Metab 2018; 28:907-921.e7. [PMID: 30174308 PMCID: PMC6288182 DOI: 10.1016/j.cmet.2018.08.005] [Citation(s) in RCA: 172] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 07/13/2018] [Accepted: 08/02/2018] [Indexed: 02/08/2023]
Abstract
Caloric restriction (CR) stimulates development of functional beige fat and extends healthy lifespan. Here we show that compositional and functional changes in the gut microbiota contribute to a number of CR-induced metabolic improvements and promote fat browning. Mechanistically, these effects are linked to a lower expression of the key bacterial enzymes necessary for the lipid A biosynthesis, a critical lipopolysaccharide (LPS) building component. The decreased LPS dictates the tone of the innate immune response during CR, leading to increased eosinophil infiltration and anti-inflammatory macrophage polarization in fat of the CR animals. Genetic and pharmacological suppression of the LPS-TLR4 pathway or transplantation with Tlr4-/- bone-marrow-derived hematopoietic cells increases beige fat development and ameliorates diet-induced fatty liver, while Tlr4-/- or microbiota-depleted mice are resistant to further CR-stimulated metabolic alterations. These data reveal signals critical for our understanding of the microbiota-fat signaling axis during CR and provide potential new anti-obesity therapeutics.
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Affiliation(s)
- Salvatore Fabbiano
- Department of Cell Physiology and Metabolism, Centre Médical Universitaire, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Diabetes Centre, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Nicolas Suárez-Zamorano
- Department of Cell Physiology and Metabolism, Centre Médical Universitaire, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Diabetes Centre, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Claire Chevalier
- Department of Cell Physiology and Metabolism, Centre Médical Universitaire, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Diabetes Centre, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Vladimir Lazarević
- Genomic Research Lab, Division of Infectious Diseases, Geneva University Hospitals, 1211 Geneva, Switzerland
| | - Silas Kieser
- Department of Cell Physiology and Metabolism, Centre Médical Universitaire, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Diabetes Centre, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Dorothée Rigo
- Department of Cell Physiology and Metabolism, Centre Médical Universitaire, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Diabetes Centre, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Stefano Leo
- Genomic Research Lab, Division of Infectious Diseases, Geneva University Hospitals, 1211 Geneva, Switzerland
| | - Christelle Veyrat-Durebex
- Department of Cell Physiology and Metabolism, Centre Médical Universitaire, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Diabetes Centre, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Nadia Gaïa
- Genomic Research Lab, Division of Infectious Diseases, Geneva University Hospitals, 1211 Geneva, Switzerland
| | - Marcello Maresca
- Discovery Biology, Discovery Sciences, IMED Biotech Unit, AstraZeneca Gothenburg, Mölndal 43183, Sweden
| | - Doron Merkler
- Department of Pathology and Immunology, Centre Médical Universitaire, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Mercedes Gomez de Agüero
- Maurice Müller Laboratories (DKF), Universitätsklinik für Viszerale Chirurgie und Medizin Inselspital, University of Bern, 3010 Bern, Switzerland
| | - Andrew Macpherson
- Maurice Müller Laboratories (DKF), Universitätsklinik für Viszerale Chirurgie und Medizin Inselspital, University of Bern, 3010 Bern, Switzerland
| | - Jacques Schrenzel
- Genomic Research Lab, Division of Infectious Diseases, Geneva University Hospitals, 1211 Geneva, Switzerland
| | - Mirko Trajkovski
- Department of Cell Physiology and Metabolism, Centre Médical Universitaire, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Diabetes Centre, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Institute of Genetics and Genomics in Geneva, University of Geneva, 1211 Geneva, Switzerland.
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8
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Selber-Hnatiw S, Rukundo B, Ahmadi M, Akoubi H, Al-Bizri H, Aliu AF, Ambeaghen TU, Avetisyan L, Bahar I, Baird A, Begum F, Ben Soussan H, Blondeau-Éthier V, Bordaries R, Bramwell H, Briggs A, Bui R, Carnevale M, Chancharoen M, Chevassus T, Choi JH, Coulombe K, Couvrette F, D'Abreau S, Davies M, Desbiens MP, Di Maulo T, Di Paolo SA, Do Ponte S, Dos Santos Ribeiro P, Dubuc-Kanary LA, Duncan PK, Dupuis F, El-Nounou S, Eyangos CN, Ferguson NK, Flores-Chinchilla NR, Fotakis T, Gado Oumarou H D M, Georgiev M, Ghiassy S, Glibetic N, Grégoire Bouchard J, Hassan T, Huseen I, Ibuna Quilatan MF, Iozzo T, Islam S, Jaunky DB, Jeyasegaram A, Johnston MA, Kahler MR, Kaler K, Kamani C, Karimian Rad H, Konidis E, Konieczny F, Kurianowicz S, Lamothe P, Legros K, Leroux S, Li J, Lozano Rodriguez ME, Luponio-Yoffe S, Maalouf Y, Mantha J, McCormick M, Mondragon P, Narayana T, Neretin E, Nguyen TTT, Niu I, Nkemazem RB, O'Donovan M, Oueis M, Paquette S, Patel N, Pecsi E, Peters J, Pettorelli A, Poirier C, Pompa VR, Rajen H, Ralph RO, Rosales-Vasquez J, Rubinshtein D, Sakr S, Sebai MS, Serravalle L, Sidibe F, Sinnathurai A, Soho D, Sundarakrishnan A, Svistkova V, Ugbeye TE, Vasconcelos MS, Vincelli M, Voitovich O, Vrabel P, Wang L, et alSelber-Hnatiw S, Rukundo B, Ahmadi M, Akoubi H, Al-Bizri H, Aliu AF, Ambeaghen TU, Avetisyan L, Bahar I, Baird A, Begum F, Ben Soussan H, Blondeau-Éthier V, Bordaries R, Bramwell H, Briggs A, Bui R, Carnevale M, Chancharoen M, Chevassus T, Choi JH, Coulombe K, Couvrette F, D'Abreau S, Davies M, Desbiens MP, Di Maulo T, Di Paolo SA, Do Ponte S, Dos Santos Ribeiro P, Dubuc-Kanary LA, Duncan PK, Dupuis F, El-Nounou S, Eyangos CN, Ferguson NK, Flores-Chinchilla NR, Fotakis T, Gado Oumarou H D M, Georgiev M, Ghiassy S, Glibetic N, Grégoire Bouchard J, Hassan T, Huseen I, Ibuna Quilatan MF, Iozzo T, Islam S, Jaunky DB, Jeyasegaram A, Johnston MA, Kahler MR, Kaler K, Kamani C, Karimian Rad H, Konidis E, Konieczny F, Kurianowicz S, Lamothe P, Legros K, Leroux S, Li J, Lozano Rodriguez ME, Luponio-Yoffe S, Maalouf Y, Mantha J, McCormick M, Mondragon P, Narayana T, Neretin E, Nguyen TTT, Niu I, Nkemazem RB, O'Donovan M, Oueis M, Paquette S, Patel N, Pecsi E, Peters J, Pettorelli A, Poirier C, Pompa VR, Rajen H, Ralph RO, Rosales-Vasquez J, Rubinshtein D, Sakr S, Sebai MS, Serravalle L, Sidibe F, Sinnathurai A, Soho D, Sundarakrishnan A, Svistkova V, Ugbeye TE, Vasconcelos MS, Vincelli M, Voitovich O, Vrabel P, Wang L, Wasfi M, Zha CY, Gamberi C. Human Gut Microbiota: Toward an Ecology of Disease. Front Microbiol 2017; 8:1265. [PMID: 28769880 PMCID: PMC5511848 DOI: 10.3389/fmicb.2017.01265] [Show More Authors] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 06/23/2017] [Indexed: 12/17/2022] Open
Abstract
Composed of trillions of individual microbes, the human gut microbiota has adapted to the uniquely diverse environments found in the human intestine. Quickly responding to the variances in the ingested food, the microbiota interacts with the host via reciprocal biochemical signaling to coordinate the exchange of nutrients and proper immune function. Host and microbiota function as a unit which guards its balance against invasion by potential pathogens and which undergoes natural selection. Disturbance of the microbiota composition, or dysbiosis, is often associated with human disease, indicating that, while there seems to be no unique optimal composition of the gut microbiota, a balanced community is crucial for human health. Emerging knowledge of the ecology of the microbiota-host synergy will have an impact on how we implement antibiotic treatment in therapeutics and prophylaxis and how we will consider alternative strategies of global remodeling of the microbiota such as fecal transplants. Here we examine the microbiota-human host relationship from the perspective of the microbial community dynamics.
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Affiliation(s)
| | - Belise Rukundo
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Masoumeh Ahmadi
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Hayfa Akoubi
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Hend Al-Bizri
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Adelekan F Aliu
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | - Lilit Avetisyan
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Irmak Bahar
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Alexandra Baird
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Fatema Begum
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | | | | | - Helene Bramwell
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Alicia Briggs
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Richard Bui
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | | | - Talia Chevassus
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Jin H Choi
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Karyne Coulombe
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | | | - Meghan Davies
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | - Tamara Di Maulo
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | | | | | | | - Paola K Duncan
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | - Sara El-Nounou
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | | | | | - Tanya Fotakis
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | - Metodi Georgiev
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | | | | | - Tazkia Hassan
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Iman Huseen
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | - Tania Iozzo
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Safina Islam
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Dilan B Jaunky
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | | | | | | | - Cedric Kamani
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | | | - Filip Konieczny
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | | | - Karina Legros
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | - Jun Li
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | | | - Yara Maalouf
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Jessica Mantha
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | | | | | | | - Thi T T Nguyen
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Ian Niu
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | | | - Matthew Oueis
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | - Nehal Patel
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Emily Pecsi
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Jackie Peters
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | | | | | | | | | | | | | - Surya Sakr
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | - Lisa Serravalle
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Fily Sidibe
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | - Dominique Soho
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | | | | | | | | | | | - Olga Voitovich
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Pamela Vrabel
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Lu Wang
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Maryse Wasfi
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Cong Y Zha
- Department of Biology, Concordia UniversityMontréal, QC, Canada
| | - Chiara Gamberi
- Department of Biology, Concordia UniversityMontréal, QC, Canada
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9
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Chevalier C, Stojanović O, Colin DJ, Suarez-Zamorano N, Tarallo V, Veyrat-Durebex C, Rigo D, Fabbiano S, Stevanović A, Hagemann S, Montet X, Seimbille Y, Zamboni N, Hapfelmeier S, Trajkovski M. Gut Microbiota Orchestrates Energy Homeostasis during Cold. Cell 2016; 163:1360-74. [PMID: 26638070 DOI: 10.1016/j.cell.2015.11.004] [Citation(s) in RCA: 544] [Impact Index Per Article: 60.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 09/11/2015] [Accepted: 10/28/2015] [Indexed: 12/16/2022]
Abstract
Microbial functions in the host physiology are a result of the microbiota-host co-evolution. We show that cold exposure leads to marked shift of the microbiota composition, referred to as cold microbiota. Transplantation of the cold microbiota to germ-free mice is sufficient to increase insulin sensitivity of the host and enable tolerance to cold partly by promoting the white fat browning, leading to increased energy expenditure and fat loss. During prolonged cold, however, the body weight loss is attenuated, caused by adaptive mechanisms maximizing caloric uptake and increasing intestinal, villi, and microvilli lengths. This increased absorptive surface is transferable with the cold microbiota, leading to altered intestinal gene expression promoting tissue remodeling and suppression of apoptosis-the effect diminished by co-transplanting the most cold-downregulated strain Akkermansia muciniphila during the cold microbiota transfer. Our results demonstrate the microbiota as a key factor orchestrating the overall energy homeostasis during increased demand.
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Affiliation(s)
- Claire Chevalier
- Department of Cell Physiology and Metabolism, Centre Médical Universitaire (CMU), Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Diabetes Centre, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Ozren Stojanović
- Department of Cell Physiology and Metabolism, Centre Médical Universitaire (CMU), Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Diabetes Centre, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Didier J Colin
- Centre for BioMedical Imaging (CIBM), Geneva University Hospitals, 1211 Geneva, Switzerland
| | - Nicolas Suarez-Zamorano
- Department of Cell Physiology and Metabolism, Centre Médical Universitaire (CMU), Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Diabetes Centre, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Valentina Tarallo
- Department of Cell Physiology and Metabolism, Centre Médical Universitaire (CMU), Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Diabetes Centre, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Christelle Veyrat-Durebex
- Department of Cell Physiology and Metabolism, Centre Médical Universitaire (CMU), Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Diabetes Centre, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Dorothée Rigo
- Department of Cell Physiology and Metabolism, Centre Médical Universitaire (CMU), Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Diabetes Centre, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Salvatore Fabbiano
- Department of Cell Physiology and Metabolism, Centre Médical Universitaire (CMU), Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Diabetes Centre, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Ana Stevanović
- Department of Cell Physiology and Metabolism, Centre Médical Universitaire (CMU), Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Diabetes Centre, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Stefanie Hagemann
- Institute for Infectious Diseases, University of Bern, 3010 Bern, Switzerland
| | - Xavier Montet
- Division of Radiology, Geneva University Hospitals, 1211 Geneva, Switzerland
| | - Yann Seimbille
- Centre for BioMedical Imaging (CIBM), Geneva University Hospitals, 1211 Geneva, Switzerland
| | - Nicola Zamboni
- Institute for Molecular Systems Biology, Swiss Federal Institute of Technology (ETH) Zurich, 8093 Zurich, Switzerland
| | | | - Mirko Trajkovski
- Department of Cell Physiology and Metabolism, Centre Médical Universitaire (CMU), Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Diabetes Centre, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Division of Biosciences, Institute of Structural and Molecular Biology, University College London (UCL), London WC1E 6BT, UK.
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