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Auclair M, Roblot N, Capel E, Fève B, Antoine B. Pharmacological modulation of RORα controls fat browning, adaptive thermogenesis, and body weight in mice. Am J Physiol Endocrinol Metab 2021; 320:E219-E233. [PMID: 33252251 PMCID: PMC8260366 DOI: 10.1152/ajpendo.00131.2020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Beiging is an attractive therapeutic strategy to fight against obesity and its side metabolic complications. The loss of function of the nuclear transcription factor RORα has been related to a lean phenotype with higher thermogenesis in sg/sg mice lacking this protein. Here we show that pharmacological modulation of RORα activity exerts reciprocal and cell-autonomous effect on UCP1 expression ex vivo, in cellulo, and in vivo. The RORα inverse-agonist SR3335 upregulated UCP1 expression in brown and subcutaneous white adipose tissue (scWAT) explants of wild-type (WT) mice, whereas the RORα agonist SR1078 had the opposite effect. We confirmed the reciprocal action of these synthetic RORα ligands on gene expression, mitochondrial mass, and uncoupled oxygen consumption rate in cultured murine and human adipocytes. Time course analysis revealed stepwise variation in gene expression, first of TLE3, an inhibitor of the thermogenic program, followed by a reciprocal effect on PRDM16 and UCP1. Finally, RORα ligands were shown to be useful tools to modulate in vivo UCP1 expression in scWAT with associated changes in this fat depot mass. SR3335 and SR1078 provoked the opposite effects on the WT mice body weight, but without any effect on sg/sg mice. This slimming effect of SR3335 was related to an increased adaptive thermogenesis of the mice, as assessed by the rectal temperature of cold-stressed mice and induction of UCP1 in scWAT, as well as by indirect calorimetry in presence or not of a β3-adrenoceptor agonist. These data confirmed that RORα ligands could be useful tools to modulate thermogenesis and energy homeostasis.NEW & NOTEWORTHY The regulation of adipose tissue browning was not fully deciphered and required further studies explaining how the regulation of this process may be of interest for tackling obesity and related metabolic disorders. Our data confirmed the involvement of the transcription factor RORα in the regulation of nonshivering thermogenesis, and importantly, revealed the possibility to in vivo modulate its activity by synthetic ligands with beneficial consequences on fat mass and body weight of the mice.
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MESH Headings
- Adipocytes/drug effects
- Adipocytes/physiology
- Adipose Tissue, Brown/drug effects
- Adipose Tissue, Brown/physiology
- Adipose Tissue, White/drug effects
- Adipose Tissue, White/physiology
- Adult
- Animals
- Benzamides/pharmacology
- Body Weight/drug effects
- Cell Transdifferentiation/drug effects
- Cells, Cultured
- Cold-Shock Response/drug effects
- Cold-Shock Response/physiology
- Female
- Humans
- Mice
- Mice, Inbred C57BL
- Mice, Mutant Strains
- Nuclear Receptor Subfamily 1, Group F, Member 1/agonists
- Nuclear Receptor Subfamily 1, Group F, Member 1/physiology
- Sulfonamides/pharmacology
- Thermogenesis/drug effects
- Thiazoles/pharmacology
- Thiophenes/pharmacology
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Affiliation(s)
- Martine Auclair
- Centre de Recherche Saint-Antoine UMR_S938, Sorbonne Université-INSERM, Paris, France
| | - Natacha Roblot
- Centre de Recherche Saint-Antoine UMR_S938, Sorbonne Université-INSERM, Paris, France
| | - Emilie Capel
- Centre de Recherche Saint-Antoine UMR_S938, Sorbonne Université-INSERM, Paris, France
| | - Bruno Fève
- Centre de Recherche Saint-Antoine UMR_S938, Sorbonne Université-INSERM, Paris, France
- AP-HP, Service d'Endocrinologie, Hôpital Saint-Antoine, Paris, France
| | - Bénédicte Antoine
- Centre de Recherche Saint-Antoine UMR_S938, Sorbonne Université-INSERM, Paris, France
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Jargaud V, Bour S, Tercé F, Collet X, Valet P, Bouloumié A, Guillemot JC, Mauriège P, Jalkanen S, Stolen C, Salmi M, Smith DJ, Carpéné C. Obesity of mice lacking VAP-1/SSAO by Aoc3 gene deletion is reproduced in mice expressing a mutated vascular adhesion protein-1 (VAP-1) devoid of amine oxidase activity. J Physiol Biochem 2020; 77:141-154. [PMID: 32712883 DOI: 10.1007/s13105-020-00756-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 06/29/2020] [Indexed: 12/18/2022]
Abstract
The product of Aoc3 gene is known as vascular adhesion protein-1 (VAP-1), a glycoprotein contributing to leukocyte extravasation and exhibiting semicarbazide-sensitive amine oxidase activity (SSAO). Regarding the immune functions of VAP-1/SSAO, it is known that mice bearing Aoc3 gene knock-out (AOC3KO) exhibit defects in leukocyte migration similar to those of mice expressing a mutated VAP-1 lacking functional SSAO activity (knock-in, AOC3KI). However, it has not been reported whether these models differ regarding other disturbances. Thus, we further compared endocrine-metabolic phenotypes of AOC3KO and AOC3KI mice to their respective control. Special attention was paid on adiposity, glucose and lipid handling, since VAP-1/SSAO is highly expressed in adipose tissue (AT). In both mouse lines, no tissue SSAO activity was found, while Aoc3 mRNA was absent in AOC3KO only. Although food consumption was unchanged, both AOC3KO and AOC3KI mice were heavier and fatter than their respective controls. Other alterations commonly found in adipocytes from both lines were loss of benzylamine insulin-like action with unchanged insulin lipogenic responsiveness and adiponectin expression. A similar downregulation of inflammatory markers (CD45, IL6) was found in AT. Glucose handling and liver mass remained unchanged, while circulating lipid profile was distinctly altered, with increased cholesterol in AOC3KO only. These results suggest that the lack of oxidase activity found in AOC3KI is sufficient to reproduce the metabolic disturbances observed in AOC3KO mice, save those related with cholesterol transport. Modulation of SSAO activity therefore constitutes a potential target for the treatment of cardiometabolic diseases, especially obesity when complicated by low-grade inflammation.
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Affiliation(s)
- Valentin Jargaud
- Institute of Metabolic and Cardiovascular Diseases, INSERM, UMR1048, Toulouse, France.,University of Toulouse, UMR1048, Paul Sabatier University, Toulouse, France.,Sanofi, Translational Sciences Unit, Chilly-Mazarin, France
| | - Sandy Bour
- Institute of Metabolic and Cardiovascular Diseases, INSERM, UMR1048, Toulouse, France.,University of Toulouse, UMR1048, Paul Sabatier University, Toulouse, France
| | - François Tercé
- Institute of Metabolic and Cardiovascular Diseases, INSERM, UMR1048, Toulouse, France.,University of Toulouse, UMR1048, Paul Sabatier University, Toulouse, France
| | - Xavier Collet
- Institute of Metabolic and Cardiovascular Diseases, INSERM, UMR1048, Toulouse, France.,University of Toulouse, UMR1048, Paul Sabatier University, Toulouse, France
| | - Philippe Valet
- Institute of Metabolic and Cardiovascular Diseases, INSERM, UMR1048, Toulouse, France.,University of Toulouse, UMR1048, Paul Sabatier University, Toulouse, France
| | - Anne Bouloumié
- Institute of Metabolic and Cardiovascular Diseases, INSERM, UMR1048, Toulouse, France.,University of Toulouse, UMR1048, Paul Sabatier University, Toulouse, France
| | | | - Pascale Mauriège
- Dept. of Kinesiology, Fac. of Medicine and PEPS, Laval University, Québec, Canada
| | - Sirpa Jalkanen
- MediCity and Institute of Biomedicine, University of Turku, Turku, Finland
| | - Craig Stolen
- MediCity and Biotie Therapies Plc, Turku, Finland
| | - Marko Salmi
- MediCity and Institute of Biomedicine, University of Turku, Turku, Finland
| | | | - Christian Carpéné
- Institute of Metabolic and Cardiovascular Diseases, INSERM, UMR1048, Toulouse, France. .,University of Toulouse, UMR1048, Paul Sabatier University, Toulouse, France.
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3
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Palacios-González B, Vargas-Castillo A, Velázquez-Villegas LA, Vasquez-Reyes S, López P, Noriega LG, Aleman G, Tovar-Palacio C, Torre-Villalvazo I, Yang LJ, Zarain-Herzberg A, Torres N, Tovar AR. Genistein increases the thermogenic program of subcutaneous WAT and increases energy expenditure in mice. J Nutr Biochem 2019; 68:59-68. [PMID: 31030168 DOI: 10.1016/j.jnutbio.2019.03.012] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 01/31/2019] [Accepted: 03/14/2019] [Indexed: 01/04/2023]
Abstract
White adipose tissue (WAT) can differentiate into beige adipose tissue by the browning process. Some polyphenols, including isoflavones, particularly genistein, are suggested to increase the expression of browning markers. There is evidence that consumption of genistein can attenuate body weight gain and improve glucose tolerance and blood lipid levels. The aim of the present study was to investigate the potential mechanisms of stimulation by which genistein activates the browning of WAT. We studied the stimulation of the expression of browning markers in the following models: mice fed genistein; preadipocytes from 3 T3-L1 cells; and the stromal vascular fraction (SVF) from the inguinal adipose tissue of mice. The results indicated that genistein can stimulate the browning process by at least two mechanisms. An indirect mechanism was involved in the induction of PGC-1α/FNDC5 in skeletal muscle leading to an increase in the myokine irisin. In preadipocytes, irisin was able to increase the expression of Ucp1 and Tmem26, markers of browning, to increase energy expenditure. Interestingly, genistein was also able to activate browning by a direct mechanism. Incubation of preadipocytes with genistein increased UCP1 expression as well as some biomarkers of browning in a concentration-dependent manner, possibly via phosphorylation of AMPK. The effect of genistein was accompanied by an increase in the number of mitochondria as well as in the maximum respiration rate of the adipocytes. In conclusion, this study indicated that genistein can increase energy expenditure by stimulating the browning process directly in preadipocytes and indirectly by increasing the circulating levels of irisin.
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Affiliation(s)
- Berenice Palacios-González
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico, D.F. 14080
| | - Ariana Vargas-Castillo
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico, D.F. 14080
| | | | - Sarai Vasquez-Reyes
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico, D.F. 14080
| | - Patricia López
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico, D.F. 14080
| | - Lilia G Noriega
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico, D.F. 14080
| | - Gabriela Aleman
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico, D.F. 14080
| | - Claudia Tovar-Palacio
- Departamento de Nefrología, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico, D.F. 14080
| | - Iván Torre-Villalvazo
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico, D.F. 14080
| | - Li-Jun Yang
- Department of Pathology, Immunology and Laboratory Medicine, University of Florida, College of Medicine, Gainesville, FL
| | | | - Nimbe Torres
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico, D.F. 14080
| | - Armando R Tovar
- Departamento de Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico, D.F. 14080.
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Lu SF, Tang YX, Zhang T, Fu SP, Hong H, Cheng Y, Xu HX, Jing XY, Yu ML, Zhu BM. Electroacupuncture Reduces Body Weight by Regulating Fat Browning-Related Proteins of Adipose Tissue in HFD-Induced Obese Mice. Front Psychiatry 2019; 10:353. [PMID: 31244685 PMCID: PMC6580183 DOI: 10.3389/fpsyt.2019.00353] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 05/03/2019] [Indexed: 02/05/2023] Open
Abstract
Objective: This study investigated the influence of electroacupuncture (EA) and its potential underlying mechanisms on adipose tissue in obese mice. Methods: Three-week-old male C56BL/6 mice were randomly divided to feed or not to feed high-fat diet (HFD), named HFD group and chow diet (CD) group, respectively. After 12 weeks, CD and HFD mice were randomly divided into two groups, respectively, to receive or not receive EA for 4 weeks. Body weight (BW) was monitored. Intraperitoneal glucose tolerance test and metabolic chamber recordings were performed. Blood samples and adipose tissue were collected for the analysis of leptin, triglyceride levels, and fat browning-related proteins. Results: EA significantly reduced food intake, BW, and white adipose tissue (WAT)/BW ratio; decreased the adipocyte size and serum concentrations of triglyceride (TG) and cholesterol; and increased oxygen consumption in HFD mice. Compared with the CD mice, the HFD mice had elevated fasting serum glucose level and impaired glucose tolerance; however, these parameters were decreased by EA treatment. Meanwhile, EA promoted the protein and mRNA expressions of UCP1, PRDM16, and PGC-1α in adipose tissue, and activated sympathetic nerves via p-TH, A2AR, and β3AR in white adipose tissue. Conclusions: EA reduced food intake, BW, TG, and cholesterol, and improved glucose tolerance in HFD mice. This ameliorative effect of EA on obesity-related symptoms associated with its promoted adipose tissue plasticity via activating sympathetic nerves.
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Affiliation(s)
- Sheng-Feng Lu
- Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yue-Xia Tang
- Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China.,Huai'an Hospital of Traditional Chinese Medicine, Huaian, China
| | - Tao Zhang
- Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
| | - Shu-Ping Fu
- Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
| | - Hao Hong
- Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yu Cheng
- Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
| | - Hou-Xi Xu
- Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xing-Yue Jing
- Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
| | - Mei-Ling Yu
- Key Laboratory of Acupuncture and Medicine Research of Ministry of Education, Nanjing University of Chinese Medicine, Nanjing, China
| | - Bing-Mei Zhu
- Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, China
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Troglitazone activates TRPV1 and causes deacetylation of PPARγ in 3T3-L1 cells. Biochim Biophys Acta Mol Basis Dis 2018; 1865:445-453. [PMID: 30496795 DOI: 10.1016/j.bbadis.2018.11.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Revised: 10/18/2018] [Accepted: 11/05/2018] [Indexed: 01/25/2023]
Abstract
Published research suggests that activation of transient receptor potential vanilloid subfamily 1 (TRPV1) enhances the expression and deacetylation of peroxisome proliferator-activated receptor gamma (PPARγ) to cause browning of white adipose tissue. Here, we show that TRPV1 activation by capsaicin significantly prevents high fat diet-induced obesity in mice. This is associated with an increase in the expression and deacetylation of PPARγ in the epididymal fat of these mice. Consistent with the TRPV1 activation in vivo, overexpression of TRPV1 enhanced the PPARγ and other thermogenic genes in cultured 3T3-L1 preadipocytes. To determine the interaction between TRPV1 and PPARγ signaling, we analyzed the effect of Troglitazone (Trog; a thiazolidinedione derivative and an agonist of PAARγ) treatment on cultured 3T3-L1 cells. Trog enhanced the expression of TRPV1, PPARγ and thermogenic proteins in undifferentiated 3T3-L1 cells but not in differentiated cells. Acute application of Trog stimulated a robust Ca2+ influx into 3T3-L1 cells and TRPV1 inhibition by capsazepine prevented this. More interestingly, Trog or capsaicin treatment caused the deacetylation of PPARγ in 3T3-L1 cells and inhibition of TRPV1 or Sirtuin 1 - prevented this. Our data suggest a novel effect of Trog to induce PPARγ deacetylation by activating TRPV1. This research has a significant implication on the role of TRPV1 and PPARγ signaling in the browning of white adipose tissue.
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6
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Zhu E, Yang Y, Zhang J, Li Y, Li C, Chen L, Sun B. Liraglutide suppresses obesity and induces brown fat-like phenotype via Soluble Guanylyl Cyclase mediated pathway in vivo and in vitro. Oncotarget 2018; 7:81077-81089. [PMID: 27835589 PMCID: PMC5348377 DOI: 10.18632/oncotarget.13189] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 10/28/2016] [Indexed: 12/20/2022] Open
Abstract
Strategies for driving white adipose tissue (WAT) to acquire brown-like characteristics are a promising approach to reduce obesity. Liraglutide has been reported to active brown adipose tissue (BAT) thermogenesis and WAT browning by rapid intracerebroventricular injection in mice. In this study, we investigated the effects and possible mechanisms of liraglutide on WAT browning by chronic treatment. Here, we show that liraglutide significantly decreases body weight of mice and reduces the size of white adipocytes. By quantity polymerase chain reaction, immunoblotting analysis, cell immunofluorescence or immunocytochemical staining, we found liraglutide induced WAT browning because it up-regulated lipolytic activity, BAT, as well as mitochondrial marker genes in inguinal and peripheral renal WAT. We also confirmed liraglutide induced browning of 3T3-L1 because it enhanced expression of BAT and mitochondrial specific genes. In further, we observed that, soluble guanylyl cyclase (sGC) and protein kinase G I (PKGI) were up-regulated by liraglutide in vivo and in vitro; stimulation of sGC elevated expression of BAT markers and PKGI, which suggested that liraglutide induced WAT browning via sGC-dependent pathway. Taken together, this study expands our knowledge on the mechanism of liraglutide inducing WAT browning, and provides a theoretical support for clinical usage of liraglutide on obesity treatment.
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Affiliation(s)
- Endong Zhu
- Key Laboratory of Hormones and Development (Ministry of Health), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, 300070 Tianjin, China
| | - Yang Yang
- Key Laboratory of Hormones and Development (Ministry of Health), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, 300070 Tianjin, China
| | - Juanjuan Zhang
- Key Laboratory of Hormones and Development (Ministry of Health), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, 300070 Tianjin, China
| | - Yongmei Li
- Key Laboratory of Hormones and Development (Ministry of Health), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, 300070 Tianjin, China.,Department of Human Anatomy and Histology, Tianjin Medical University, 300070 Tianjin, China
| | - Chunjun Li
- Key Laboratory of Hormones and Development (Ministry of Health), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, 300070 Tianjin, China
| | - Liming Chen
- Key Laboratory of Hormones and Development (Ministry of Health), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, 300070 Tianjin, China
| | - Bei Sun
- Key Laboratory of Hormones and Development (Ministry of Health), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, 300070 Tianjin, China
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Carobbio S, Guénantin AC, Vidal-Puig A. 'Basic and Applied Thermogenesis Research' Bridging the Gap. Trends Endocrinol Metab 2018; 29:5-7. [PMID: 29110964 DOI: 10.1016/j.tem.2017.10.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 10/06/2017] [Accepted: 10/06/2017] [Indexed: 12/31/2022]
Abstract
Obesity is a major health problem without satisfactory pharmacological treatment. A promising strategy is to promote energy dissipation by activating brown/beige adipose tissue. However, for this strategy to succeed it requires improving the transferability amongst cellular, murine, and human systems and bridging the gap between basic and clinical research.
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Affiliation(s)
- Stefania Carobbio
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, UK; Metabolic Research Laboratories, Addenbrooke's Treatment Centre, Institute of Metabolic Science, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK.
| | - Anne-Claire Guénantin
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, UK; Metabolic Research Laboratories, Addenbrooke's Treatment Centre, Institute of Metabolic Science, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK
| | - Antonio Vidal-Puig
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, UK; Metabolic Research Laboratories, Addenbrooke's Treatment Centre, Institute of Metabolic Science, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK.
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8
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de Abreu MDC, Pessoa LR, da Costa LR, Chagas MA, da Costa CAS, Boaventura GT. Flaxseed flour diet during lactation until 180 days results in an increase in body adiposity in adult male rats. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.10.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
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9
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Milet C, Bléher M, Allbright K, Orgeur M, Coulpier F, Duprez D, Havis E. Egr1 deficiency induces browning of inguinal subcutaneous white adipose tissue in mice. Sci Rep 2017; 7:16153. [PMID: 29170465 PMCID: PMC5701004 DOI: 10.1038/s41598-017-16543-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 11/15/2017] [Indexed: 12/12/2022] Open
Abstract
Beige adipocyte differentiation within white adipose tissue, referred to as browning, is seen as a possible mechanism for increasing energy expenditure. The molecular regulation underlying the thermogenic browning process has not been entirely elucidated. Here, we identify the zinc finger transcription factor EGR1 as a negative regulator of the beige fat program. Loss of Egr1 in mice promotes browning in the absence of external stimulation and leads to an increase of Ucp1 expression, which encodes the key thermogenic mitochondrial uncoupling protein-1. Moreover, EGR1 is recruited to the proximal region of the Ucp1 promoter in subcutaneous inguinal white adipose tissue. Transcriptomic analysis of subcutaneous inguinal white adipose tissue in the absence of Egr1 identifies the molecular signature of white adipocyte browning downstream of Egr1 deletion and highlights a concomitant increase of beige differentiation marker and a decrease in extracellular matrix gene expression. Conversely, Egr1 overexpression in mesenchymal stem cells decreases beige adipocyte differentiation, while increasing extracellular matrix production. These results reveal a role for Egr1 in blocking energy expenditure via direct Ucp1 transcription repression and highlight Egr1 as a therapeutic target for counteracting obesity.
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Affiliation(s)
- Cécile Milet
- Sorbonne Universités, UPMC Univ Paris 06, CNRS UMR7622, Inserm U1156, IBPS-Developmental Biology Laboratory, F-75005, Paris, France
| | - Marianne Bléher
- Sorbonne Universités, UPMC Univ Paris 06, CNRS UMR7622, Inserm U1156, IBPS-Developmental Biology Laboratory, F-75005, Paris, France
| | | | - Mickael Orgeur
- Sorbonne Universités, UPMC Univ Paris 06, CNRS UMR7622, Inserm U1156, IBPS-Developmental Biology Laboratory, F-75005, Paris, France
| | - Fanny Coulpier
- École normale supérieure, PSL Research University, CNRS, Inserm, Institut de Biologie de l'École normale supérieure (IBENS), Plateforme Génomique, 75005, Paris, France
| | - Delphine Duprez
- Sorbonne Universités, UPMC Univ Paris 06, CNRS UMR7622, Inserm U1156, IBPS-Developmental Biology Laboratory, F-75005, Paris, France.
| | - Emmanuelle Havis
- Sorbonne Universités, UPMC Univ Paris 06, CNRS UMR7622, Inserm U1156, IBPS-Developmental Biology Laboratory, F-75005, Paris, France.
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10
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Pereira MP, Ferreira LAA, da Silva FHS, Christoffolete MA, Metsios GS, Chaves VE, de França SA, Damazo AS, Flouris AD, Kawashita NH. A low-protein, high-carbohydrate diet increases browning in perirenal adipose tissue but not in inguinal adipose tissue. Nutrition 2017; 42:37-45. [PMID: 28870477 DOI: 10.1016/j.nut.2017.05.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 04/26/2017] [Accepted: 05/17/2017] [Indexed: 01/20/2023]
Abstract
OBJECTIVE The aim of this study was to evaluate the browning and origin of fatty acids (FAs) in the maintenance of triacylglycerol (TG) storage and/or as fuel for thermogenesis in perirenal adipose tissue (periWAT) and inguinal adipose tissue (ingWAT) of rats fed a low-protein, high-carbohydrate (LPHC) diet. METHODS LPHC (6% protein, 74% carbohydrate) or control (C; 17% protein, 63% carbohydrate) diets were administered to rats for 15 d. The tissues were stained with hematoxylin and eosin for histologic analysis. The content of uncoupling protein 1 (UCP1) was determined by immunofluorescence. Levels of T-box transcription factor (TBX1), PR domain containing 16 (PRDM16), adipose triacylglycerol lipase (ATGL), hormone-sensitive lipase, lipoprotein lipase (LPL), glycerokinase, phosphoenolpyruvate carboxykinase (PEPCK), glucose transporter 4, β3-adrenergic receptor (AR), β1-AR, protein kinase A (PKA), adenosine-monophosphate-activated protein kinase (AMPK), and phospho-AMPK were determined by immunoblotting. Serum fibroblast growth factor 21 (FGF21) was measured using a commercial kit (Student's t tests, P < 0.05). RESULTS The LPHC diet increased FGF21 levels by 150-fold. The presence of multilocular adipocytes, combined with the increased contents of UCP1, TBX1, and PRDM16 in periWAT of LPHC-fed rats, suggested the occurrence of browning. The contents of β1-AR and LPL were increased in the periWAT. The ingWAT showed higher ATGL and PEPCK levels, phospho-AMPK/AMPK ratio, and reduced β3-AR and PKA levels. CONCLUSION These findings suggest that browning occurred only in the periWAT and that higher utilization of FAs from blood lipoproteins acted as fuel for thermogenesis. Increased glycerol 3-phosphate generation by glyceroneogenesis increased FAs reesterification from lipolysis, explaining the increased TG storage in the ingWAT.
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Affiliation(s)
- Mayara P Pereira
- Department of Chemistry, Biochemistry Laboratory, Federal University of Mato Grosso, Cuiabá, Mato Grosso, Brazil
| | - Laís A A Ferreira
- Department of Chemistry, Biochemistry Laboratory, Federal University of Mato Grosso, Cuiabá, Mato Grosso, Brazil
| | - Flávia H S da Silva
- Department of Chemistry, Biochemistry Laboratory, Federal University of Mato Grosso, Cuiabá, Mato Grosso, Brazil
| | | | - George S Metsios
- Faculty of Education, Health and Wellbeing, Wolverhampton University, Walsall Campus, United Kingdom
| | - Valéria E Chaves
- Laboratory of Physiology and Pharmacology, Federal University of São João Del Rei, Divinópolis, Minas Gerais, Brazil
| | - Suélem A de França
- Department of Chemistry, Biochemistry Laboratory, Federal University of Mato Grosso, Cuiabá, Mato Grosso, Brazil
| | - Amílcar S Damazo
- Department of Basic Health Sciences, Faculty of Medicine, Federal University of Mato Grosso, Cuiabá, Mato Grosso, Brazil
| | - Andreas D Flouris
- FAME Laboratory, Department of exercise Science, University of Thessaly, Trikala, Greece
| | - Nair H Kawashita
- Department of Chemistry, Biochemistry Laboratory, Federal University of Mato Grosso, Cuiabá, Mato Grosso, Brazil.
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11
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Montanari T, Pošćić N, Colitti M. Factors involved in white-to-brown adipose tissue conversion and in thermogenesis: a review. Obes Rev 2017; 18:495-513. [PMID: 28187240 DOI: 10.1111/obr.12520] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 01/10/2017] [Accepted: 01/11/2017] [Indexed: 12/21/2022]
Abstract
Obesity is the result of energy intake chronically exceeding energy expenditure. Classical treatments against obesity do not provide a satisfactory long-term outcome for the majority of patients. After the demonstration of functional brown adipose tissue in human adults, great effort is being devoted to develop therapies based on the adipose tissue itself, through the conversion of fat-accumulating white adipose tissue into energy-dissipating brown adipose tissue. Anti-obesity treatments that exploit endogenous, pharmacological and nutritional factors to drive such conversion are especially in demand. In the present review, we summarize the current knowledge about the various molecules that can be applied in promoting white-to-brown adipose tissue conversion and energy expenditure and the cellular mechanisms involved.
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Affiliation(s)
- T Montanari
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy
| | - N Pošćić
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy
| | - M Colitti
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy
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12
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Xie G, Swiderska-Syn M, Jewell ML, Machado MV, Michelotti GA, Premont RT, Diehl AM. Loss of pericyte smoothened activity in mice with genetic deficiency of leptin. BMC Cell Biol 2017; 18:20. [PMID: 28427343 PMCID: PMC5399438 DOI: 10.1186/s12860-017-0135-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 04/06/2017] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Obesity is associated with multiple diseases, but it is unclear how obesity promotes progressive tissue damage. Recovery from injury requires repair, an energy-expensive process that is coupled to energy availability at the cellular level. The satiety factor, leptin, is a key component of the sensor that matches cellular energy utilization to available energy supplies. Leptin deficiency signals energy depletion, whereas activating the Hedgehog pathway drives energy-consuming activities. Tissue repair is impaired in mice that are obese due to genetic leptin deficiency. Tissue repair is also blocked and obesity enhanced by inhibiting Hedgehog activity. We evaluated the hypothesis that loss of leptin silences Hedgehog signaling in pericytes, multipotent leptin-target cells that regulate a variety of responses that are often defective in obesity, including tissue repair and adipocyte differentiation. RESULTS We found that pericytes from liver and white adipose tissue require leptin to maintain expression of the Hedgehog co-receptor, Smoothened, which controls the activities of Hedgehog-regulated Gli transcription factors that orchestrate gene expression programs that dictate pericyte fate. Smoothened suppression prevents liver pericytes from being reprogrammed into myofibroblasts, but stimulates adipose-derived pericytes to become white adipocytes. Progressive Hedgehog pathway decay promotes senescence in leptin-deficient liver pericytes, which, in turn, generate paracrine signals that cause neighboring hepatocytes to become fatty and less proliferative, enhancing vulnerability to liver damage. CONCLUSIONS Leptin-responsive pericytes evaluate energy availability to inform tissue construction by modulating Hedgehog pathway activity and thus, are at the root of progressive obesity-related tissue pathology. Leptin deficiency inhibits Hedgehog signaling in pericytes to trigger a pericytopathy that promotes both adiposity and obesity-related tissue damage.
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Affiliation(s)
- Guanhua Xie
- Department of Medicine, Division of Gastroenterology, Duke University, 905 S. LaSalle Street, Snyderman Building, Suite 1073, Durham, NC 27710 USA
| | - Marzena Swiderska-Syn
- Department of Medicine, Division of Gastroenterology, Duke University, 905 S. LaSalle Street, Snyderman Building, Suite 1073, Durham, NC 27710 USA
- Current address: Medical University of South Carolina, Charleston, SC 29425 USA
| | - Mark L. Jewell
- Department of Medicine, Division of Gastroenterology, Duke University, 905 S. LaSalle Street, Snyderman Building, Suite 1073, Durham, NC 27710 USA
| | - Mariana Verdelho Machado
- Department of Medicine, Division of Gastroenterology, Duke University, 905 S. LaSalle Street, Snyderman Building, Suite 1073, Durham, NC 27710 USA
- Current address: Santa Maria Hospital, University of Lisbon, Lisbon, Portugal
| | - Gregory A. Michelotti
- Department of Medicine, Division of Gastroenterology, Duke University, 905 S. LaSalle Street, Snyderman Building, Suite 1073, Durham, NC 27710 USA
- Current address: Metabolon Inc, Research Triangle Park, NC 27709 USA
| | - Richard T. Premont
- Department of Medicine, Division of Gastroenterology, Duke University, 905 S. LaSalle Street, Snyderman Building, Suite 1073, Durham, NC 27710 USA
| | - Anna Mae Diehl
- Department of Medicine, Division of Gastroenterology, Duke University, 905 S. LaSalle Street, Snyderman Building, Suite 1073, Durham, NC 27710 USA
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13
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Carroll SH, Zhang E, Wang BF, LeClair KB, Rahman A, Cohen DE, Plutzky J, Patwari P, Lee RT. Adipocyte arrestin domain-containing 3 protein (Arrdc3) regulates uncoupling protein 1 (Ucp1) expression in white adipose independently of canonical changes in β-adrenergic receptor signaling. PLoS One 2017; 12:e0173823. [PMID: 28291835 PMCID: PMC5349670 DOI: 10.1371/journal.pone.0173823] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 02/26/2017] [Indexed: 11/19/2022] Open
Abstract
Adaptive thermogenesis and cold-induced activation of uncoupling protein 1 (Ucp1) in brown adipose tissue in rodents is well-described and attributed to sympathetic activation of β-adrenergic signaling. The arrestin domain containing protein Arrdc3 is a regulator of obesity in mice and also appears linked to obesity in humans. We generated a mouse with conditional deletion of Arrdc3, and here we present evidence that genetic ablation of Arrdc3 specifically in adipocytes results in increased Ucp1 expression in subcutaneous and parametrial adipose tissue. Although this increase in expression did not correspond with significant changes in body weight or energy expenditure, adipocyte-specific Arrdc3-null mice had improved glucose tolerance. It was previously hypothesized that Arrdc3 ablation leads to increased β-adrenergic receptor sensitivity; however, in vitro experiments show that Arrdc3-null adipocytes responded to β-adrenergic receptor agonist with decreased Ucp1 levels. Additionally, canonical β-adrenergic receptor signaling was not different in Arrdc3-null adipocytes. These data reveal a role for Arrdc3 in the regulation of Ucp1 expression in adipocytes. However, this adipocyte effect is insufficient to generate the obesity-resistant phenotype of mice with ubiquitous deletion of Arrdc3, indicating a likely role for Arrdc3 in cells other than adipocytes.
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Affiliation(s)
- Shannon H. Carroll
- Harvard Stem Cell Institute and Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, Massachusetts, United States of America
| | - Ellen Zhang
- Harvard Stem Cell Institute and Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, Massachusetts, United States of America
| | - Bing F. Wang
- Harvard Stem Cell Institute and Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, Massachusetts, United States of America
| | - Katherine B. LeClair
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
| | - Arifeen Rahman
- Harvard Stem Cell Institute and Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, Massachusetts, United States of America
| | - David E. Cohen
- Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women’s Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
| | - Jorge Plutzky
- Cardiovascular Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Parth Patwari
- Cardiovascular Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Richard T. Lee
- Harvard Stem Cell Institute and Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, Massachusetts, United States of America
- Cardiovascular Division, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
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14
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Abstract
Energy homeostasis is regulated by homeostatic and nonhomeostatic reward circuits which are closely integrated and interrelated. Before, during, and after meals, peripheral nutritional signals, through hormonal and neuronal pathways, are conveyed to selective brain areas, namely the hypothalamic nuclei and the brainstem, the main brain areas for energy balance regulation. These orexigenic and anorexigenic centers are held responsible for the integration of those signals and for an adequate output to peripheral organs involved in metabolism and energy homeostasis.Feeding includes also a hedonic behavior defined as food intake for pleasure independently of energy requirement. This nonhomeostatic regulation of energy balance is based on food reward properties, unrelated to nutritional demands, and involves areas like mesolimbic reward system, such as the ventral tegmental area and the nucleus accumbens, and also opioid, endocannabinoid, and dopamine systems.Herein, focus will be put on the brain circuits of homeostatic and nonhomeostatic regulation of food intake and energy expenditure.
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Affiliation(s)
- Paulo Matafome
- Institute of Physiology, Institute for Biomedical Imaging and Life Sciences-IBILI, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,Department of Complementary Sciences, Coimbra Health School (ESTeSC), Instituto Politécnico de Coimbra, Coimbra, Portugal
| | - Raquel Seiça
- Institute of Physiology, Institute for Biomedical Imaging and Life Sciences-IBILI, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.
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