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Lee SH, Suh JH, Heo MJ, Choi JM, Yang Y, Jung HJ, Gao Z, Yu Y, Jung SY, Kolonin MG, Cox AR, Hartig SM, Eltzschig HK, Ju C, Moore DD, Kim KH. The Hepatokine Orosomucoid 2 Mediates Beneficial Metabolic Effects of Bile Acids. Diabetes 2024; 73:701-712. [PMID: 38320268 PMCID: PMC11043061 DOI: 10.2337/db23-0520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 01/28/2024] [Indexed: 02/08/2024]
Abstract
Bile acids (BAs) are pleiotropic regulators of metabolism. Elevated levels of hepatic and circulating BAs improve energy metabolism in peripheral organs, but the precise mechanisms underlying the metabolic benefits and harm still need to be fully understood. In the current study, we identified orosomucoid 2 (ORM2) as a liver-secreted hormone (i.e., hepatokine) induced by BAs and investigated its role in BA-induced metabolic improvements in mouse models of diet-induced obesity. Contrary to our expectation, under a high-fat diet (HFD), our Orm2 knockout (Orm2-KO) exhibited a lean phenotype compared with C57BL/6J control, partly due to the increased energy expenditure. However, when challenged with a HFD supplemented with cholic acid, Orm2-KO eliminated the antiobesity effect of BAs, indicating that ORM2 governs BA-induced metabolic improvements. Moreover, hepatic ORM2 overexpression partially replicated BA effects by enhancing insulin sensitivity. Mechanistically, ORM2 suppressed interferon-γ/STAT1 activities in inguinal white adipose tissue depots, forming the basis for anti-inflammatory effects of BAs and improving glucose homeostasis. In conclusion, our study provides new insights into the molecular mechanisms of BA-induced liver-adipose cross talk through ORM2 induction. ARTICLE HIGHLIGHTS
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Affiliation(s)
- Sung Ho Lee
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Chonnam National University, Gwangju, Korea
| | - Ji Ho Suh
- Department of Anesthesiology, Critical Care and Pain Medicine and Center for Perioperative Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX
| | - Mi Jeong Heo
- Department of Anesthesiology, Critical Care and Pain Medicine and Center for Perioperative Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX
| | - Jong Min Choi
- Systems Onco-Immunology Laboratory, David J. Sugarbaker Division of Thoracic Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX
| | - Yang Yang
- Department of Anesthesiology, Critical Care and Pain Medicine and Center for Perioperative Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX
| | - Hyun-Jung Jung
- Department of Anesthesiology, Critical Care and Pain Medicine and Center for Perioperative Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX
| | - Zhanguo Gao
- The Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center, Houston, TX
| | - Yongmei Yu
- The Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center, Houston, TX
| | - Sung Yun Jung
- Verna and Marrs McLean Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX
| | - Mikhail G. Kolonin
- The Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center, Houston, TX
| | - Aaron R. Cox
- The Brown Foundation Institute of Molecular Medicine, University of Texas Health Science Center, Houston, TX
| | - Sean M. Hartig
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX
- Division of Diabetes, Endocrinology, and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, TX
| | - Holger K. Eltzschig
- Department of Anesthesiology, Critical Care and Pain Medicine and Center for Perioperative Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX
| | - Cynthia Ju
- Department of Anesthesiology, Critical Care and Pain Medicine and Center for Perioperative Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX
| | - David D. Moore
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA
| | - Kang Ho Kim
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX
- Department of Anesthesiology, Critical Care and Pain Medicine and Center for Perioperative Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX
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Abstract
Recent advances in pharmacotherapies that promote appetite suppression have shown remarkable weight loss. Therapies targeting energy expenditure lag behind, and as such none have yet been identified to be safe and efficacious for sustaining negative energy balance toward weight loss. Multiple energy dissipating pathways have been identified in adipose tissue and muscle. The molecular effectors of some of these pathways have been identified, but much is still left to be learned about their regulation. Understanding the molecular underpinnings of metabolic inefficiency in adipose tissue and muscle is required if these pathways are to be therapeutically targeted in the context of obesity and obesity-accelerated diseases.
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Affiliation(s)
- Lawrence Kazak
- Rosalind & Morris Goodman Cancer Institute, McGill University, Montreal, QC H3A 1A3, Canada
- Department of Biochemistry, McGill University, Montreal, QC H3G 1Y6, Canada
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Silva V, Faria HOF, Sousa-Filho CPB, de Alvarenga JFR, Fiamoncini J, Otton R. Thermoneutrality or standard temperature: is there an ideal housing temperature to study the antisteatotic effects of green tea in obese mice? J Nutr Biochem 2023; 120:109411. [PMID: 37423321 DOI: 10.1016/j.jnutbio.2023.109411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 06/15/2023] [Accepted: 06/29/2023] [Indexed: 07/11/2023]
Abstract
Metabolic-associated fatty liver disease (MAFLD) is a condition characterized by excessive accumulation of triglycerides in hepatocytes, currently considered the number one cause of chronic liver disease. MAFLD is strongly associated with obesity, type 2 diabetes, hyperlipidaemia, and hypertension. Emphasis has been placed on the use of green tea (GT), produced from the Camellia sinensis plant, rich in antioxidants as polyphenols and catechins, on obesity and MAFLD treatment/prevention. Studies carried out in rodent models housed at a standard temperature (ST, 22°C) are being questioned as ST is a determining factor on generating changes in the physiology of immune response, and energy metabolism. On the other hand, it seems that thermoneutrality (TN, 28°C) represents a closer parallel to human physiology. In this perspective, we investigated the effects of GT (500 mg/kg of body weight, over 12 weeks, 5 days/week) by comparing mice housed at ST or TN in a model of MAFLD of diet-induced obese males C57Bl/6 mice. We show that the liver phenotype at TN exhibits a more severe MAFLD while GT ameliorates this condition. In parallel, GT restores the expression of genes involved in the lipogenic pathway, regardless of temperature, with slight modifications in lipolysis/fatty acid oxidation. We observed an increase promoted by GT in PPARα and PPARγ proteins independently of housing temperature and a dual pattern of bile acid synthesis. Thus, animals' conditioning temperature is a key factor that can interfere in the results involving obesity and MAFLD, although GT has beneficial effects against MAFLD independently of the housing temperature of mice.
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Affiliation(s)
- Victória Silva
- Interdisciplinary Postgraduate Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Sao Paulo, Brazil
| | | | | | - José Fernando Rinaldi de Alvarenga
- Department of Food Science and Experimental Nutrition, Food Research Center, School of Pharmaceutical Sciences, University of São Paulo, Sao Paulo, Sao Paulo, Brazil
| | - Jarlei Fiamoncini
- Department of Food Science and Experimental Nutrition, Food Research Center, School of Pharmaceutical Sciences, University of São Paulo, Sao Paulo, Sao Paulo, Brazil
| | - Rosemari Otton
- Interdisciplinary Postgraduate Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Sao Paulo, Brazil.
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Transcriptome and targeted metabolome analysis provide insights into bile acids' new roles and mechanisms on fat deposition and meat quality in lamb. Food Res Int 2022; 162:111941. [DOI: 10.1016/j.foodres.2022.111941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 07/21/2022] [Accepted: 09/12/2022] [Indexed: 11/19/2022]
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Affiliation(s)
- Alessia Perino
- Institute of Bioengineering, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Kristina Schoonjans
- Institute of Bioengineering, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
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Li Y, Fromme T. Uncoupling Protein 1 Does Not Produce Heat without Activation. Int J Mol Sci 2022; 23:2406. [PMID: 35269549 PMCID: PMC8910648 DOI: 10.3390/ijms23052406] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 02/16/2022] [Accepted: 02/18/2022] [Indexed: 12/21/2022] Open
Abstract
Mitochondrial uncoupling protein 1 (UCP1) is the crucial mechanistic component of heat production in classical brown fat and the newly identified beige or brite fat. Thermogenesis inevitably comes at a high energetic cost and brown fat, ultimately, is an energy-wasting organ. A constrained strategy that minimizes brown fat activity unless obligate will have been favored during natural selection to safeguard metabolic thriftiness. Accordingly, UCP1 is constitutively inhibited and is inherently not leaky without activation. It follows that increasing brown adipocyte number or UCP1 abundance genetically or pharmacologically does not lead to an automatic increase in thermogenesis or subsequent metabolic consequences in the absence of a plausible route of concomitant activation. Despite its apparent obviousness, this tenet is frequently ignored. Consequently, incorrect conclusions are often drawn from increased BAT or brite/beige depot mass, e.g., predicting or causally linking beneficial metabolic effects. Here, we highlight the inherently inactive nature of UCP1, with a particular emphasis on the molecular brakes and releases of UCP1 activation under physiological conditions. These controls of UCP1 activity represent potential targets of therapeutic interventions to unlock constraints and efficiently harness the energy-expending potential of brown fat to prevent and treat obesity and associated metabolic disorders.
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Affiliation(s)
- Yongguo Li
- Chair for Molecular Nutritional Medicine, TUM School of Life Sciences, Technical University of Munich, Gregor-Mendel-Str. 2, 85354 Freising, Germany
| | - Tobias Fromme
- Chair for Molecular Nutritional Medicine, TUM School of Life Sciences, Technical University of Munich, Gregor-Mendel-Str. 2, 85354 Freising, Germany
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Osuna-Prieto FJ, Rubio-Lopez J, Di X, Yang W, Kohler I, Rensen PCN, Ruiz JR, Martinez-Tellez B. Plasma Levels of Bile Acids Are Related to Cardiometabolic Risk Factors in Young Adults. J Clin Endocrinol Metab 2022; 107:715-723. [PMID: 34718617 PMCID: PMC8851912 DOI: 10.1210/clinem/dgab773] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Indexed: 12/28/2022]
Abstract
CONTEXT Bile acids (BA) are known for their role in intestinal lipid absorption and can also play a role as signaling molecules to control energy metabolism. Prior evidence suggests that alterations in circulating BA levels and in the pool of circulating BA are linked to an increased risk of obesity and a higher incidence of type 2 diabetes in middle-aged adults. OBJECTIVE We aimed to investigate the association between plasma levels of BA with cardiometabolic risk factors in a cohort of well-phenotyped, relatively healthy young adults. METHODS Body composition, brown adipose tissue, serum classical cardiometabolic risk factors, and a set of 8 plasma BA (including glyco-conjugated forms) in 136 young adults (age 22.1 ± 2.2 years, 67% women) were measured. RESULTS Plasma levels of chenodeoxycholic acid (CDCA) and glycoursodeoxycholic acid (GUDCA) were higher in men than in women, although these differences disappeared after adjusting for body fat percentage. Furthermore, cholic acid (CA), CDCA, deoxycholic acid (DCA), and glycodeoxycholic acid (GDCA) levels were positively, yet weakly associated, with lean body mass (LBM) levels, while GDCA and glycolithocholic acid (GLCA) levels were negatively associated with 18F-fluorodeoxyglucose uptake by brown adipose tissue. Interestingly, glycocholic acid (GCA), glycochenodeoxycholic acid (GCDCA), and GUDCA were positively associated with glucose and insulin serum levels, HOMA index, low-density lipoprotein cholesterol, tumor necrosis factor alpha, interleukin (IL)-2, and IL-8 levels, but negatively associated with high-density lipoprotein cholesterol, ApoA1, and adiponectin levels, yet these significant correlations partially disappeared after the inclusion of LBM as a confounder. CONCLUSION Our findings indicate that plasma levels of BA might be sex dependent and are associated with cardiometabolic and inflammatory risk factors in young and relatively healthy adults.
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Affiliation(s)
- Francisco J Osuna-Prieto
- PROFITH (PROmoting FITness and Health through Physical Activity) Research Group, Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain
- Department of Analytical Chemistry, University of Granada, Granada, Spain
- Research and Development of Functional Food Centre (CIDAF), Granada, Spain
| | - José Rubio-Lopez
- PROFITH (PROmoting FITness and Health through Physical Activity) Research Group, Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain
- Cirugía General y del Aparato Digestivo, Complejo Hospitalario de Jaen, Spain
| | - Xinyu Di
- Division of Systems Biomedicine and Pharmacology, Leiden Academic Center for Drug Research (LACDR), Leiden University, EZ Leiden, The Netherlands
| | - Wei Yang
- Division of Systems Biomedicine and Pharmacology, Leiden Academic Center for Drug Research (LACDR), Leiden University, EZ Leiden, The Netherlands
| | - Isabelle Kohler
- Division of BioAnalytical Chemistry, Vrije Universiteit Amsterdam, Amsterdam Institute of Molecular and Life Sciences (AIMMS), HV Amsterdam, the Netherlands
- Center for Analytical Sciences Amsterdam, HV Amsterdam, the Netherlands
| | - Patrick C N Rensen
- Department of Medicine, Division of Endocrinology, and Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center (LUMC), RC Leiden, the Netherlands
| | - Jonatan R Ruiz
- PROFITH (PROmoting FITness and Health through Physical Activity) Research Group, Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain
- Jonatan R. Ruiz, PhD, PROFITH (PROmoting FITness and Health through Physical Activity) Research Group, Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, 18011 Granada, Spain.
| | - Borja Martinez-Tellez
- PROFITH (PROmoting FITness and Health through Physical Activity) Research Group, Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, Granada, Spain
- Department of Medicine, Division of Endocrinology, and Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center (LUMC), RC Leiden, the Netherlands
- Correspondence: Borja Martinez-Tellez, PhD, PROFITH (PROmoting FITness and Health through Physical Activity) Research Group, Department of Physical Education and Sport, Faculty of Sport Sciences, University of Granada, 18011 Granada, Spain; Department of Medicine, Division of Endocrinology, and Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center (LUMC), 2300 RC Leiden, the Netherlands.
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8
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Dieckmann S, Strohmeyer A, Willershäuser M, Maurer SF, Wurst W, Marschall S, de Angelis MH, Kühn R, Worthmann A, Fuh MM, Heeren J, Köhler N, Pauling JK, Klingenspor M. Susceptibility to diet-induced obesity at thermoneutral conditions is independent of UCP1. Am J Physiol Endocrinol Metab 2022; 322:E85-E100. [PMID: 34927460 DOI: 10.1152/ajpendo.00278.2021] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Activation of uncoupling protein 1 (UCP1) in brown adipose tissue (BAT) upon cold stimulation leads to substantial increase in energy expenditure to defend body temperature. Increases in energy expenditure after a high-caloric food intake, termed diet-induced thermogenesis, are also attributed to BAT. These properties render BAT a potential target to combat diet-induced obesity. However, studies investigating the role of UCP1 to protect against diet-induced obesity are controversial and rely on the phenotyping of a single constitutive UCP1-knockout model. To address this issue, we generated a novel UCP1-knockout model by Cre-mediated deletion of exon 2 in the UCP1 gene. We studied the effect of constitutive UCP1 knockout on metabolism and the development of diet-induced obesity. UCP1 knockout and wild-type mice were housed at 30°C and fed a control diet for 4 wk followed by 8 wk of high-fat diet. Body weight and food intake were monitored continuously over the course of the study, and indirect calorimetry was used to determine energy expenditure during both feeding periods. Based on Western blot analysis, thermal imaging and noradrenaline test, we confirmed the lack of functional UCP1 in knockout mice. However, body weight gain, food intake, and energy expenditure were not affected by loss of UCP1 function during both feeding periods. We introduce a novel UCP1-KO mouse enabling the generation of conditional UCP1-knockout mice to scrutinize the contribution of UCP1 to energy metabolism in different cell types or life stages. Our results demonstrate that UCP1 does not protect against diet-induced obesity at thermoneutrality.NEW & NOTEWORTHY We provide evidence that the abundance of UCP1 does not influence energy metabolism at thermoneutrality studying a novel Cre-mediated UCP1-KO mouse model. This model will be a foundation for a better understanding of the contribution of UCP1 in different cell types or life stages to energy metabolism.
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Affiliation(s)
- Sebastian Dieckmann
- Chair for Molecular Nutritional Medicine, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
- EKFZ - Else Kröner Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany
- ZIEL - Institute for Food & Health, Technical University of Munich, Freising, Germany
| | - Akim Strohmeyer
- Chair for Molecular Nutritional Medicine, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
- EKFZ - Else Kröner Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany
- ZIEL - Institute for Food & Health, Technical University of Munich, Freising, Germany
| | - Monja Willershäuser
- Chair for Molecular Nutritional Medicine, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
- EKFZ - Else Kröner Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany
- ZIEL - Institute for Food & Health, Technical University of Munich, Freising, Germany
| | - Stefanie F Maurer
- Chair for Molecular Nutritional Medicine, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
- EKFZ - Else Kröner Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany
- ZIEL - Institute for Food & Health, Technical University of Munich, Freising, Germany
| | - Wolfgang Wurst
- Institute of Developmental Genetics, Helmholtz Zentrum München, Germany
- TUM School of Life Sciences, Technical University of Munich, Freising, Germany
- German Center for Neurodegenerative Diseases (DZNE), Site Munich, Germany
| | - Susan Marschall
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
| | - Martin Hrabe de Angelis
- Institute of Experimental Genetics, Helmholtz Zentrum München, Neuherberg, Germany
- Chair of Experimental Genetics, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
- German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Ralf Kühn
- Institute of Developmental Genetics, Helmholtz Zentrum München, Germany
| | - Anna Worthmann
- Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Marceline M Fuh
- Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Joerg Heeren
- Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Nikolai Köhler
- LipiTUM, Chair of Experimental Bioinformatics, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
| | - Josch K Pauling
- LipiTUM, Chair of Experimental Bioinformatics, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
| | - Martin Klingenspor
- Chair for Molecular Nutritional Medicine, TUM School of Life Sciences, Technical University of Munich, Freising, Germany
- EKFZ - Else Kröner Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany
- ZIEL - Institute for Food & Health, Technical University of Munich, Freising, Germany
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9
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Heianza Y, Zhou T, He H, Rood J, Clish CB, Bray GA, Sacks FM, Qi L. Changes in bile acid subtypes and long-term successful weight-loss in response to weight-loss diets: The POUNDS lost trial. Liver Int 2022; 42:363-373. [PMID: 34748263 DOI: 10.1111/liv.15098] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 10/27/2021] [Accepted: 11/04/2021] [Indexed: 12/31/2022]
Abstract
BACKGROUND AND AIMS Primary bile acids (BAs) are synthesized in the liver and secondary BAs result from intestinal microbial activity. Different subtypes of BAs may be involved in regulating adiposity and energy homeostasis. We examined how changes in circulating BA subtypes induced by weight-loss diets were associated with improvements in adiposity, regional fat deposition and energy metabolism among overweight and obese adults. METHODS The study included 551 subjects who participated in a 2-year weight-loss diet intervention trial. Circulating 14 BA subtypes (primary and secondary unconjugated BAs and their taurine-/glycine-conjugates) were measured at baseline and 6 months. Associations of changes in BAs with changes in weight, waist circumference, resting energy expenditure (REE), body fat composition and fat distribution were evaluated. RESULTS Greater decreases in primary BAs (cholate and chenodeoxycholate) and secondary BAs (deoxycholate and lithocholate) and their conjugates (except for glycolithocholate) were associated with more decreases in weight and waist circumference at 6 months (P-after-false-discovery-rate-correction [PFDR ] < .05). We found that changes in glycocholate and glycoursodeoxycholate were consistently associated with reductions of general and central adiposity, REE, whole-body fat and visceral adipose tissue (PFDR < .05). Further, the initial (6-month) changes in BA subtypes were differently predictive of successful weight loss over 2 years. CONCLUSIONS The decreases in primary and secondary BA subtypes after eating low-calorie weight-loss diets were significantly associated with improving adiposity, fat accumulation and energy metabolism, suggesting that specific BA subtypes would be predictive of long-term successful weight loss and individuals' response to the treatment of weight-loss diets.
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Affiliation(s)
- Yoriko Heianza
- Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, New Orleans, Louisiana, USA
| | - Tao Zhou
- Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, New Orleans, Louisiana, USA
| | - Hua He
- Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, New Orleans, Louisiana, USA
| | - Jennifer Rood
- Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Clary B Clish
- Metabolomics Platform, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
| | - George A Bray
- Pennington Biomedical Research Center, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Frank M Sacks
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Lu Qi
- Department of Epidemiology, School of Public Health and Tropical Medicine, Tulane University, New Orleans, Louisiana, USA.,Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
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10
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Barroso WA, Serra MB, Abreu IC, Barbeiro HV, Fiamoncini J, de Alvarenga JFR, de Souza HP, de Lima TM. Banana green peels extract protects against nonalcoholic fatty liver disease in high-fat-fed mice through modulation of lipid metabolism and inflammation. Phytother Res 2022; 36:951-962. [PMID: 35018684 DOI: 10.1002/ptr.7366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 12/08/2021] [Accepted: 12/11/2021] [Indexed: 12/18/2022]
Abstract
We investigate the effect of the banana green peels extract (BPE) as a preventive treatment against NAFLD in high-fat diet fed mice. Mice received daily doses of 100 or 250 mg/kg of BPE for 12 weeks along with the high-fat diet. BPE reduced weight gain (p < .0001), adipose tissue hypertrophy (p < .0001), and improved glucose homeostasis (p < .0001). Plasma levels of glucose-dependent insulinotropic polypeptide, triglycerides, total cholesterol, LDL-cholesterol, non-esterified fatty acids, aspartate and alanine transaminase, leptin, and resistin were decreased in BPE treated mice (p < .05). BPE effects on lipid metabolism were associated with decreased gene expression of lipogenic enzymes and increased expression of enzymes related to fatty acid and cholesterol degradation (p < .05). Plasma and liver bile acid (BA) profiles were modulated by BPE, with positive correlations between specific BA and UCP-1, CPT-1 and PGC-1β expression in brown adipose tissue (p < .05). BPE reduced hepatic steatosis and inflammation, possibly due to reduced p65 NF-κB nuclear translocation (p < .05) and modulation of oxidative stress (p < .05). These data indicate that BPE is a source of phytochemical compounds with promising effects toward the prevention of metabolic disorders associated with obesity.
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Affiliation(s)
| | - Mariana Barreto Serra
- Emergency Medicine Department, Medical School, University of São Paulo, São Paulo-SP, Brazil
| | - Iracelle Carvalho Abreu
- Physiological Sciences Department, Laboratory of Research and Post-graduation in Pharmacology (LPPF), Federal University of Maranhão, São Luís, Brazil
| | - Hermes Vieira Barbeiro
- Emergency Medicine Department, Medical School, University of São Paulo, São Paulo-SP, Brazil
| | - Jarlei Fiamoncini
- Food Research Center (FoRC), Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo-SP, Brazil
| | - José Fernando Rinaldi de Alvarenga
- Food Research Center (FoRC), Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo-SP, Brazil
| | | | - Thais Martins de Lima
- Emergency Medicine Department, Medical School, University of São Paulo, São Paulo-SP, Brazil
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11
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Prophylactic Inhibition of Colonization by Streptococcus pneumoniae with the Secondary Bile Acid Metabolite Deoxycholic Acid. Infect Immun 2021; 89:e0046321. [PMID: 34543118 DOI: 10.1128/iai.00463-21] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Streptococcus pneumoniae colonizes the nasopharynx of children and the elderly but also kills millions worldwide yearly. The secondary bile acid metabolite deoxycholic acid (DoC) affects the viability of human pathogens but also plays multiple roles in host physiology. We assessed in vitro the antimicrobial activity of DoC and investigated its potential to eradicate S. pneumoniae colonization using a model of human nasopharyngeal colonization and an in vivo mouse model of colonization. At a physiological concentration, DoC (0.5 mg/ml; 1.27 mM) killed all tested S. pneumoniae strains (n = 48) 2 h postinoculation. The model of nasopharyngeal colonization showed that DoC eradicated colonization by S. pneumoniae strains as soon as 10 min postexposure. The mechanism of action did not involve activation of autolysis, since the autolysis-defective double mutants ΔlytAΔlytC and ΔspxBΔlctO were as susceptible to DoC as was the wild type (WT). Oral streptococcal species (n = 20), however, were not susceptible to DoC (0.5 mg/ml). Unlike trimethoprim, whose spontaneous resistance frequency (srF) for TIGR4 or EF3030 was ≥1 × 10-9, no spontaneous resistance was observed with DoC (srF, ≥1 × 10-12). Finally, the efficacy of DoC to eradicate S. pneumoniae colonization was assessed in vivo using a topical route via intranasal (i.n.) administration and as a prophylactic treatment. Mice challenged with S. pneumoniae EF3030 carried a median of 4.05 × 105 CFU/ml 4 days postinoculation compared to 6.67 × 104 CFU/ml for mice treated with DoC. Mice in the prophylactic group had an ∼99% reduction of the pneumococcal density (median, 2.61 × 103 CFU/ml). Thus, DoC, an endogenous human bile salt, has therapeutic potential against S. pneumoniae.
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Brandão BB, Poojari A, Rabiee A. Thermogenic Fat: Development, Physiological Function, and Therapeutic Potential. Int J Mol Sci 2021; 22:5906. [PMID: 34072788 PMCID: PMC8198523 DOI: 10.3390/ijms22115906] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 04/30/2021] [Accepted: 05/27/2021] [Indexed: 12/11/2022] Open
Abstract
The concerning worldwide increase of obesity and chronic metabolic diseases, such as T2D, dyslipidemia, and cardiovascular disease, motivates further investigations into preventive and alternative therapeutic approaches. Over the past decade, there has been growing evidence that the formation and activation of thermogenic adipocytes (brown and beige) may serve as therapy to treat obesity and its associated diseases owing to its capacity to increase energy expenditure and to modulate circulating lipids and glucose levels. Thus, understanding the molecular mechanism of brown and beige adipocytes formation and activation will facilitate the development of strategies to combat metabolic disorders. Here, we provide a comprehensive overview of pathways and players involved in the development of brown and beige fat, as well as the role of thermogenic adipocytes in energy homeostasis and metabolism. Furthermore, we discuss the alterations in brown and beige adipose tissue function during obesity and explore the therapeutic potential of thermogenic activation to treat metabolic syndrome.
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Affiliation(s)
- Bruna B. Brandão
- Section of Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA;
| | - Ankita Poojari
- Department of Physiology & Pharmacology, Thomas J. Long School of Pharmacy & Health Sciences, University of the Pacific, Stockton, CA 95211, USA;
| | - Atefeh Rabiee
- Department of Physiology & Pharmacology, Thomas J. Long School of Pharmacy & Health Sciences, University of the Pacific, Stockton, CA 95211, USA;
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13
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Wang H, Willershäuser M, Li Y, Fromme T, Schnabl K, Bast-Habersbrunner A, Ramisch S, Mocek S, Klingenspor M. Uncoupling protein-1 expression does not protect mice from diet-induced obesity. Am J Physiol Endocrinol Metab 2021; 320:E333-E345. [PMID: 33252252 PMCID: PMC8260371 DOI: 10.1152/ajpendo.00285.2020] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We studied the metabolic phenotype of a novel Ucp1-LUC-iRFP713 knock-in reporter gene mouse model originally generated to monitor endogenous Ucp1 gene expression. Both reporter mice and reporter cells reliably reflected Ucp1 gene expression in vivo and in vitro. We here report an unexpected reduction in UCP1 content in homozygous knock-in (KI) reporter mice. As a result, the thermogenic capacity of KI mice stimulated by norepinephrine was largely blunted, making them more sensitive to an acute cold exposure. In return, these reporter mice with reduced UCP1 expression enabled us to investigate the physiological role of UCP1 in the prevention of weight gain. We observed no substantial differences in body mass across the three genotypes, irrespective of the type of diet or the ambient temperature, possibly due to the insufficient UCP1 activation. Indeed, activation of UCP1 by daily injection of the selective β3-adrenergic receptor agonist CL316,243 resulted in significantly greater reduction of body weight in wild-type mice than in KI mice. Taken together, we conclude that the intact expression of UCP1 is essential for cold-induced thermogenesis but the presence of UCP1 per se does not protect mice from diet-induced obesity.NEW & NOTEWORTHY To study the functional role of UCP1-dependent brown adipose tissue thermogenesis for energy balance, new animal models are needed. By metabolic phenotyping of a novel mouse model with low UCP1 levels in brown fat, we demonstrate that the susceptibility to diet-induced obesity is not increased despite impaired cold-induced thermogenic capacity. Brown fat requires pharmacological activation to promote negative energy balance in diet-induced obese mice.
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Affiliation(s)
- Hui Wang
- Else Kröner-Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany
- Chair for Molecular Nutritional Medicine, Technical University of Munich, Freising, Germany
| | - Monja Willershäuser
- Else Kröner-Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany
- Chair for Molecular Nutritional Medicine, Technical University of Munich, Freising, Germany
| | - Yongguo Li
- Else Kröner-Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany
- Chair for Molecular Nutritional Medicine, Technical University of Munich, Freising, Germany
| | - Tobias Fromme
- Else Kröner-Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany
- Chair for Molecular Nutritional Medicine, Technical University of Munich, Freising, Germany
| | - Katharina Schnabl
- Else Kröner-Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany
- Chair for Molecular Nutritional Medicine, Technical University of Munich, Freising, Germany
| | - Andrea Bast-Habersbrunner
- Else Kröner-Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany
- Chair for Molecular Nutritional Medicine, Technical University of Munich, Freising, Germany
| | - Samira Ramisch
- Else Kröner-Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany
- Chair for Molecular Nutritional Medicine, Technical University of Munich, Freising, Germany
| | - Sabine Mocek
- Else Kröner-Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany
- Chair for Molecular Nutritional Medicine, Technical University of Munich, Freising, Germany
| | - Martin Klingenspor
- Else Kröner-Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany
- Chair for Molecular Nutritional Medicine, Technical University of Munich, Freising, Germany
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14
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Singh S, Periasamy M, Bal NC. Strain-specific differences in muscle Ca 2+ transport and mitochondrial electron transport chain proteins between FVB/N and C57BL/6J mice. ACTA ACUST UNITED AC 2021; 224:jeb.238634. [PMID: 33268531 DOI: 10.1242/jeb.238634] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Accepted: 11/23/2020] [Indexed: 12/23/2022]
Abstract
Genetically engineered mouse models have been used to determine the role of sarcolipin (SLN) in muscle. However, a few studies had difficulty in detecting SLN in FBV/N mice and questioned its relevance to muscle metabolism. It is known that genetic alteration of proteins in different inbred mice strains produces dissimilar functional outcomes. Therefore, here we compared the expression of SLN and key proteins involved in Ca2+ handling and mitochondrial metabolism between FVB/N and C57BL/6J mouse strains. Data suggest that SLN expression is less abundant in the skeletal muscles of FVB/N mice than in the C57BL/6J strain. The expression of Ca2+ transporters in the mitochondrial membranes was also lower in FVB/N than in C57BL/6J mice. Similarly, electron transport chain proteins in the mitochondria were less abundant in FVB/N mice, which may contribute to differences in energy metabolism. Future studies using different mouse strains should take these differences into account when interpreting their data.
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Affiliation(s)
- Sushant Singh
- Sanford Burnham Prebys Medical Discovery Institute at Lake Nona, Orlando, FL 32827, USA
| | - Muthu Periasamy
- Sanford Burnham Prebys Medical Discovery Institute at Lake Nona, Orlando, FL 32827, USA .,Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL 32827, USA
| | - Naresh C Bal
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, 751024 India
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15
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Perino A, Demagny H, Velazquez-Villegas L, Schoonjans K. Molecular Physiology of Bile Acid Signaling in Health, Disease, and Aging. Physiol Rev 2020; 101:683-731. [PMID: 32790577 DOI: 10.1152/physrev.00049.2019] [Citation(s) in RCA: 173] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Over the past two decades, bile acids (BAs) have become established as important signaling molecules that enable fine-tuned inter-tissue communication from the liver, their site of production, over the intestine, where they are modified by the gut microbiota, to virtually any organ, where they exert their pleiotropic physiological effects. The chemical variety of BAs, to a large extent determined by the gut microbiome, also allows for a complex fine-tuning of adaptive responses in our body. This review provides an overview of the mechanisms by which BA receptors coordinate several aspects of physiology and highlights new therapeutic strategies for diseases underlying pathological BA signaling.
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Affiliation(s)
- Alessia Perino
- Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne (EPFL), Switzerland
| | - Hadrien Demagny
- Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne (EPFL), Switzerland
| | - Laura Velazquez-Villegas
- Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne (EPFL), Switzerland
| | - Kristina Schoonjans
- Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne, Lausanne (EPFL), Switzerland
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Abstract
Perturbations in metabolic processes are associated with diseases such as obesity, type 2 diabetes mellitus, certain infections and some cancers. A resurgence of interest in creatine biology is developing, with new insights into a diverse set of regulatory functions for creatine. This resurgence is primarily driven by technological advances in genetic engineering and metabolism as well as by the realization that this metabolite has key roles in cells beyond the muscle and brain. Herein, we highlight the latest advances in creatine biology in tissues and cell types that have historically received little attention in the field. In adipose tissue, creatine controls thermogenic respiration and loss of this metabolite impairs whole-body energy expenditure, leading to obesity. We also cover the various roles that creatine metabolism has in cancer cell survival and the function of the immune system. Renewed interest in this area has begun to showcase the therapeutic potential that lies in understanding how changes in creatine metabolism lead to metabolic disease.
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Affiliation(s)
- Lawrence Kazak
- Goodman Cancer Research Centre, McGill University, Montreal, QC, Canada.
- Department of Biochemistry, McGill University, Montreal, QC, Canada.
| | - Paul Cohen
- Laboratory of Molecular Metabolism, The Rockefeller University, New York, NY, USA.
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17
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UCP1-independent thermogenesis. Biochem J 2020; 477:709-725. [PMID: 32059055 DOI: 10.1042/bcj20190463] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/20/2020] [Accepted: 01/21/2020] [Indexed: 12/24/2022]
Abstract
Obesity results from energy imbalance, when energy intake exceeds energy expenditure. Brown adipose tissue (BAT) drives non-shivering thermogenesis which represents a powerful mechanism of enhancing the energy expenditure side of the energy balance equation. The best understood thermogenic system in BAT that evolved to protect the body from hypothermia is based on the uncoupling of protonmotive force from oxidative phosphorylation through the actions of uncoupling protein 1 (UCP1), a key regulator of cold-mediated thermogenesis. Similarly, energy expenditure is triggered in response to caloric excess, and animals with reduced thermogenic fat function can succumb to diet-induced obesity. Thus, it was surprising when inactivation of Ucp1 did not potentiate diet-induced obesity. In recent years, it has become clear that multiple thermogenic mechanisms exist, based on ATP sinks centered on creatine, lipid, or calcium cycling, along with Fatty acid-mediated UCP1-independent leak pathways driven by the ADP/ATP carrier (AAC). With a key difference between cold- and diet-induced thermogenesis being the dynamic changes in purine nucleotide (primarily ATP) levels, ATP-dependent thermogenic pathways may play a key role in diet-induced thermogenesis. Additionally, the ubiquitous expression of AAC may facilitate increased energy expenditure in many cell types, in the face of over feeding. Interest in UCP1-independent energy expenditure has begun to showcase the therapeutic potential that lies in refining our understanding of the diversity of biochemical pathways controlling thermogenic respiration.
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Hussain MF, Roesler A, Kazak L. Regulation of adipocyte thermogenesis: mechanisms controlling obesity. FEBS J 2020; 287:3370-3385. [PMID: 32301220 DOI: 10.1111/febs.15331] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 03/26/2020] [Accepted: 04/08/2020] [Indexed: 12/16/2022]
Abstract
Adipocyte biology has been intensely researched in recent years due to the emergence of obesity as a serious global health concern and because of the realization that adipose tissue is more than simply a cell type that stores and releases lipids. The plasticity of adipose tissues, to rapidly adapt to altered physiological states of energy demand, is under neuronal and endocrine control. The capacity for white adipocytes to store chemical energy in lipid droplets is key for protecting other organs from the toxic effects of ectopic lipid deposition. In contrast, thermogenic (brown and beige) adipocytes combust macronutrients to generate heat. The thermogenic activity of adipocytes allows them to protect themselves and other tissues from lipid overaccumulation. Advances in brown fat biology have uncovered key molecular players involved in adipocyte determination, differentiation, and thermogenic activation. It is now, well appreciated that three distinct adipocyte types exist: white, beige, and brown. Moreover, functional differences are present within adipocyte subtypes located in anatomically distinct locations. Adding to this complexity is the recent realization from single-cell sequencing studies that adipocyte progenitors are also heterogeneous. Understanding the molecular details of how to increase the number of thermogenic fat cells and their activation may delineate some of the pathophysiological basis of obesity and obesity-related diseases. Here, we review recent advances that have extended our understanding of the central role that adipose tissue plays in energy balance and the mechanisms that control their amount and function.
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Affiliation(s)
- Mohammed Faiz Hussain
- Goodman Cancer Research Centre, McGill University, Montreal, QC, Canada.,Department of Biochemistry, McGill University, Montreal, QC, Canada
| | - Anna Roesler
- Goodman Cancer Research Centre, McGill University, Montreal, QC, Canada.,Department of Biochemistry, McGill University, Montreal, QC, Canada
| | - Lawrence Kazak
- Goodman Cancer Research Centre, McGill University, Montreal, QC, Canada.,Department of Biochemistry, McGill University, Montreal, QC, Canada
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Maurer SF, Fromme T, Mocek S, Zimmermann A, Klingenspor M. Uncoupling protein 1 and the capacity for nonshivering thermogenesis are components of the glucose homeostatic system. Am J Physiol Endocrinol Metab 2020; 318:E198-E215. [PMID: 31714796 DOI: 10.1152/ajpendo.00121.2019] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Uncoupling protein 1 (Ucp1) provides nonshivering thermogenesis (NST) fueled by the dissipation of energy from macronutrients in brown and brite adipocytes. The availability of thermogenic fuels is facilitated by the uptake of extracellular glucose. This conjunction renders thermogenic adipocytes in brown and white adipose tissue (WAT) a potential target against obesity and glucose intolerance. We employed wild-type (WT) and Ucp1-ablated mice to elucidate this relationship. In three experiments of similar setup, Ucp1-ablated mice fed a high-fat diet (HFD) had either reduced or similar body mass gain, food intake, and metabolic efficiency compared with WT mice, challenging the hypothesized role of this protein in the development of diet-induced obesity. Despite the absence of increased body mass, oral glucose tolerance was robustly impaired in Ucp1-ablated mice in response to HFD. Postprandial glucose uptake was attenuated in brown adipose tissue but enhanced in subcutaneous WAT of Ucp1-ablated mice. These differences were explainable by expression of the insulin-responsive member 4 of the facilitated glucose transporter family and fully in line with the capacity for NST in these very tissues. Thus, the postprandial glucose uptake of adipose tissues serves as a surrogate measure for Ucp1-dependent and independent capacity for NST. Collectively, our findings corroborate Ucp1 as a modulator of adipose tissue glucose uptake and systemic glucose homeostasis but challenge its hypothesized causal effect on the development of obesity.
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Affiliation(s)
- Stefanie F Maurer
- Chair for Molecular Nutritional Medicine, Technical University of Munich, TUM School of Life Sciences, Freising, Germany
- Else Kröner-Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany
| | - Tobias Fromme
- Chair for Molecular Nutritional Medicine, Technical University of Munich, TUM School of Life Sciences, Freising, Germany
- Else Kröner-Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany
- ZIEL Institute for Food and Health, Technical University of Munich, Freising, Germany
| | - Sabine Mocek
- Chair for Molecular Nutritional Medicine, Technical University of Munich, TUM School of Life Sciences, Freising, Germany
| | - Anika Zimmermann
- Chair for Molecular Nutritional Medicine, Technical University of Munich, TUM School of Life Sciences, Freising, Germany
| | - Martin Klingenspor
- Chair for Molecular Nutritional Medicine, Technical University of Munich, TUM School of Life Sciences, Freising, Germany
- Else Kröner-Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising, Germany
- ZIEL Institute for Food and Health, Technical University of Munich, Freising, Germany
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