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Rezq S, Huffman AM, Basnet J, Alsemeh AE, do Carmo JM, Yanes Cardozo LL, Romero DG. MicroRNA-21 modulates brown adipose tissue adipogenesis and thermogenesis in a mouse model of polycystic ovary syndrome. Biol Sex Differ 2024; 15:53. [PMID: 38987854 PMCID: PMC11238487 DOI: 10.1186/s13293-024-00630-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 06/26/2024] [Indexed: 07/12/2024] Open
Abstract
BACKGROUND Polycystic ovary syndrome (PCOS), the most common endocrine disorder in premenopausal women, is associated with increased obesity, hyperandrogenism, and altered brown adipose tissue (BAT) thermogenesis. MicroRNAs play critical functions in brown adipocyte differentiation and maintenance. We aim to study the role of microRNA-21 (miR-21) in altered energy homeostasis and BAT thermogenesis in a PCOS mouse model of peripubertal androgen exposure. METHODS Three-week-old miR-21 knockout (miR21KO) or wild-type (WT) female mice were treated with dihydrotestosterone (DHT) or vehicle for 90 days. Body composition was determined by EchoMRI. Energy expenditure (EE), oxygen consumption (VO2), carbon dioxide production (VCO2), and respiratory exchange ratio (RER) were measured by indirect calorimetry. Androgen receptor (AR), and markers of adipogenesis, de novo lipogenesis, angiogenesis, extracellular matrix remodeling, and thermogenesis were quantified by RT-qPCR and/or Western-blot. RESULTS MiR-21 ablation attenuated DHT-mediated increase in body weight while having no effect on fat or BAT mass. MiR-21 ablation attenuated DHT-mediated BAT AR upregulation. MiR-21 ablation did not alter EE; however, miR21KO DHT-treated mice have reduced VO2, VCO2, and RER. MiR-21 ablation reversed DHT-mediated decrease in food intake and increase in sleep time. MiR-21 ablation decreased some adipogenesis (Adipoq, Pparγ, and Cebpβ) and extracellular matrix remodeling (Mmp-9 and Timp-1) markers expression in DHT-treated mice. MiR-21 ablation abolished DHT-mediated increases in thermogenesis markers Cpt1a and Cpt1b, while decreasing CIDE-A expression. CONCLUSIONS Our findings suggest that BAT miR-21 may play a role in regulating DHT-mediated thermogenic dysfunction in PCOS. Modulation of BAT miR-21 levels could be a novel therapeutic approach for the treatment of PCOS-associated metabolic derangements.
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Affiliation(s)
- Samar Rezq
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA.
- Women's Health Research Center, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA.
- Cardiovascular-Renal Research Center, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA.
- Department of Cell and Molecular Biology, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA.
| | - Alexandra M Huffman
- Women's Health Research Center, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA
- Cardiovascular-Renal Research Center, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA
- Department of Cell and Molecular Biology, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA
| | - Jelina Basnet
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA
- Women's Health Research Center, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA
- Cardiovascular-Renal Research Center, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA
- Department of Cell and Molecular Biology, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA
| | - Amira E Alsemeh
- Department of Anatomy, Histology, and Embryology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Jussara M do Carmo
- Department of Physiology and Biophysics, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA
- Cardiorenal and Metabolic Diseases Research Center, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA
| | - Licy L Yanes Cardozo
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA
- Department of Medicine, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA
- Women's Health Research Center, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA
- Cardiovascular-Renal Research Center, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA
- Department of Cell and Molecular Biology, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA
| | - Damian G Romero
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA.
- Women's Health Research Center, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA.
- Cardiovascular-Renal Research Center, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA.
- Department of Cell and Molecular Biology, University of Mississippi Medical Center, 2500 N. State Street, Jackson, MS, 39216, USA.
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Dakic T, Jeremic D, Lakic I, Jasnic N, Ruzicic A, Vujovic P, Jevdjovic T. Walnut supplementation increases levels of UCP1 and CD36 in brown adipose tissue independently of diet type. Mol Cell Biochem 2024; 479:1735-1745. [PMID: 38478220 DOI: 10.1007/s11010-024-04981-7] [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: 12/14/2023] [Accepted: 02/28/2024] [Indexed: 07/18/2024]
Abstract
Dietary interventions that modulate the brown adipose tissue (BAT) thermogenic activity could represent a promising therapy for metabolic disorders. In order to examine if dietary walnuts intake regulates the expression of BAT thermogenic markers levels in healthy and metabolically challenged (fructose fed) animals, rats were initially divided into the control and fructose-fed groups. After nine weeks, these groups were subdivided into the one kept on the original regimens and the other supplemented with walnuts. High-fructose diet resulted in an increased relative BAT mass and no change in UCP1 content, while the walnut supplementation increased the amount of UCP1 in BAT, but did not affect 5-HT, NA, DHPG content and DHPG/NA ratio regardless of the diet. Moreover, the CD36 levels were increased following the walnut consumption, unlike FATP1, GLUT1, GLUT4, and glycogen content which remained unchanged. Additionally, the BAT levels of activated IR and Akt were not affected by walnut consumption, while ERK signaling was decreased. Overall, we found that walnut consumption increased UCP1 and CD36 content in the BAT of both control and metabolically challenged rats, suggesting that FFAs represent the BAT preferred substrate under the previously described circumstances. This further implies that incorporating walnuts into the everyday diet may help to alleviate some symptoms of the metabolic disorder.
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Affiliation(s)
- Tamara Dakic
- Department for Comparative Physiology and Ecophysiology, Institute for Physiology and Biochemistry "Ivan Djaja", Faculty of Biology, University of Belgrade, Belgrade, 11000, Serbia
| | - Dusan Jeremic
- Department for Comparative Physiology and Ecophysiology, Institute for Physiology and Biochemistry "Ivan Djaja", Faculty of Biology, University of Belgrade, Belgrade, 11000, Serbia
| | - Iva Lakic
- Department for Comparative Physiology and Ecophysiology, Institute for Physiology and Biochemistry "Ivan Djaja", Faculty of Biology, University of Belgrade, Belgrade, 11000, Serbia
| | - Nebojsa Jasnic
- Department for Comparative Physiology and Ecophysiology, Institute for Physiology and Biochemistry "Ivan Djaja", Faculty of Biology, University of Belgrade, Belgrade, 11000, Serbia
| | - Aleksandra Ruzicic
- Department for Comparative Physiology and Ecophysiology, Institute for Physiology and Biochemistry "Ivan Djaja", Faculty of Biology, University of Belgrade, Belgrade, 11000, Serbia
| | - Predrag Vujovic
- Department for Comparative Physiology and Ecophysiology, Institute for Physiology and Biochemistry "Ivan Djaja", Faculty of Biology, University of Belgrade, Belgrade, 11000, Serbia
| | - Tanja Jevdjovic
- Department for Comparative Physiology and Ecophysiology, Institute for Physiology and Biochemistry "Ivan Djaja", Faculty of Biology, University of Belgrade, Belgrade, 11000, Serbia.
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Kim S, Na GH, Yim DJ, Liu CF, Lin TH, Shih TW, Pan TM, Lee CL, Koo YK. Lactobacillus paracasei subsp. paracasei NTU 101 prevents obesity by regulating AMPK pathways and gut microbiota in obese rat. Biochem Biophys Res Commun 2024; 731:150279. [PMID: 39018972 DOI: 10.1016/j.bbrc.2024.150279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 06/10/2024] [Accepted: 06/17/2024] [Indexed: 07/19/2024]
Abstract
This study assessed the anti-obesity effects of Lactobacillus paracasei subsp. paracasei NTU 101 (NTU 101) both in vitro and in vivo. Initially, the cytotoxicity and lipid accumulation inhibitory effects of NTU 101 on 3T3-L1 cells were evaluated using the MTT assay and oil red O assay, respectively. Subsequently, the anti-obesity effects of NTU 101 were investigated in high-fat diet-induced obese rat. Moreover, western blotting was performed to measure the obesity-related protein expression of PPARα, PPARβ, PPARγ, C/EBPα, C/EBPβ, ATGL, p-p38 MAPK, p-ERK1/2, p-AMPK and CPT-1 in both 3T3-L1 adipocytes and adipose and liver tissues. Treatment with 16 × 108 CFU/mL NTU 101 reduced lipid accumulation in 3T3-L1 adipocytes by more than 50 %. Oral administration of NTU 101 significantly attenuated body weight gain, as well as adipose tissue weight. NTU 101 administration enhanced fatty acid oxidation increasing expression levels of PPARα, CPT-1, and p-AMPK proteins in liver tissue, while simultaneously inhibited adipogenesis by reducing PPARγ and C/EBPα proteins in adipose tissue. Furthermore, NTU 101 supplementation positively modulated the composition of gut microbiota, notably increasing the abundance of Akkermansiaceae. This present study suggests that NTU 101 exerts anti-obesity effects by regulating gut microbiota, fatty acid oxidation, lipolysis and adipogenesis.
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Affiliation(s)
- SukJin Kim
- Department of R&I Center, COSMAXBIO, Seongnam, 13486, South Korea
| | - Gwi Hwan Na
- Department of R&I Center, COSMAXBIO, Seongnam, 13486, South Korea
| | - Dong Joon Yim
- Department of R&I Center, COSMAXBIO, Seongnam, 13486, South Korea
| | - Chin-Feng Liu
- Continuing Education Program of Food Biotechnology Applications, National Taitung University, Taitung, Taiwan, ROC
| | - Tse-Han Lin
- Department of Life Science, National Taitung University, 369, Sec. 2, University Rd., Taitung, 95092, Taitung, Taiwan, ROC
| | | | - Tzu-Ming Pan
- SunWay Biotech Co. LTD., Taipei, Taiwan, ROC; Department of Biochemical Science and Technology, National Taiwan University, Taipei, Taiwan, ROC
| | - Chun-Lin Lee
- Continuing Education Program of Food Biotechnology Applications, National Taitung University, Taitung, Taiwan, ROC.
| | - Yean Kyoung Koo
- Department of R&I Center, COSMAXBIO, Seongnam, 13486, South Korea.
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Dhokte S, Czaja K. Visceral Adipose Tissue: The Hidden Culprit for Type 2 Diabetes. Nutrients 2024; 16:1015. [PMID: 38613048 PMCID: PMC11013274 DOI: 10.3390/nu16071015] [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: 02/26/2024] [Revised: 03/25/2024] [Accepted: 03/28/2024] [Indexed: 04/14/2024] Open
Abstract
Type 2 diabetes (T2D) is a chronic metabolic disorder characterized by insulin resistance in various tissues. Though conventionally associated with obesity, current research indicates that visceral adipose tissue (VAT) is the leading determining factor, wielding more influence regardless of individual body mass. The heightened metabolic activity of VAT encourages the circulation of free fatty acid (FFA) molecules, which induce insulin resistance in surrounding tissues. Individuals most vulnerable to this preferential fat deposition are older males with ancestral ties to Asian countries because genetics and sex hormones are pivotal factors for VAT accumulation. However, interventions in one's diet and lifestyle have the potential to strategically discourage the growth of VAT. This illuminates the possibility that the expansion of VAT and, subsequently, the risk of T2D development are preventable. Therefore, by reducing the amount of VAT accumulated in an individual and preventing it from building up, one can effectively control and prevent the development of T2D.
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Affiliation(s)
| | - Krzysztof Czaja
- Department of Biomedical Sciences, College of Veterinary Medicine, University of Georgia, Athens, GA 30602, USA;
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Sun C, Liang J, Zheng J, Mao S, Chen S, Aikemu A, Liu C. Brown adipose Vanin-1 is required for the maintenance of mitochondrial homeostasis and prevents diet-induced metabolic dysfunction. Mol Metab 2024; 80:101884. [PMID: 38246587 PMCID: PMC10838954 DOI: 10.1016/j.molmet.2024.101884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 01/06/2024] [Accepted: 01/11/2024] [Indexed: 01/23/2024] Open
Abstract
BACKGROUND Energy-dissipating brown adipocytes have significant potential for improving systemic metabolism. Vanin-1, a membrane-bound pantetheinase, is involved in various biological processes in mice. However, its role in BAT mitochondrial function is still unclear. In this study, we aimed to elucidate the impact of Vanin-1 on BAT function and contribution during overnutrition-induced obesity. METHODS Vanin-1 expression was analyzed in different adipose depots in mice. The cellular localization of Vanin-1 was analyzed by confocal microscopy and western blots. Mice lacking Vanin-1 (Vanin-1-/-) were continuously fed either a chow diet or a high-fat diet (HFD) to establish an obesity model. RNA-seq analysis was performed to identify the molecular changes associated with Vanin-1 deficiency during obesity. BAT-specific Vanin-1 overexpression mice were established to determine the effects of Vanin-1 in vivo. Cysteamine treatment was used to examine the effect of enzymatic reaction products of Vanin-1 on BAT mitochondria function in Vanin-1-/- mice. RESULTS The results indicate that the expression of Vanin-1 is reduced in BAT from both diet-induced and leptin-deficient obese mice. Study on the subcellular location of Vanin-1 shows that it has a mitochondrial localization. Vanin-1 deficiency results in increased adiposity, BAT dysfunction, aberrant mitochondrial structure, and promotes HFD induced-BAT whitening. This is attributed to the impairment of the electron transport chain (ETC) in mitochondria due to Vanin-1 deficiency, resulting in reduced mitochondrial respiration. Overexpression of Vanin-1 significantly enhances energy expenditure and thermogenesis in BAT, renders mice resistant to diet-induced obesity. Furthermore, treatment with cysteamine rescue the mitochondrial dysfunction in Vanin-1-/- mice. CONCLUSIONS Collectively, these findings suggest that Vanin-1 plays a crucial role in promoting mitochondrial respiration to counteract diet-induced obesity, making it a potential therapeutic target for obesity.
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Affiliation(s)
- Chen Sun
- School of Basic Medicine, Weifang Medical University, Weifang, Shandong 261000, China
| | - Jiaqi Liang
- State Key Laboratory of Natural Medicines and School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
| | - Jia Zheng
- State Key Laboratory of Natural Medicines and School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
| | - Shuyu Mao
- State Key Laboratory of Natural Medicines and School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
| | - Siyu Chen
- State Key Laboratory of Natural Medicines and School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China
| | - Ainiwaer Aikemu
- Xinjiang Key Laboratory of Modernization Research, Development and Application of Hotan Characteristic Traditional Chinese Medicine Resources, College of Xinjiang Uyghur Medicine, Hotan 848099, China.
| | - Chang Liu
- State Key Laboratory of Natural Medicines and School of Life Science and Technology, China Pharmaceutical University, Nanjing 211198, China.
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Ziqubu K, Dludla PV, Mabhida SE, Jack BU, Keipert S, Jastroch M, Mazibuko-Mbeje SE. Brown adipose tissue-derived metabolites and their role in regulating metabolism. Metabolism 2024; 150:155709. [PMID: 37866810 DOI: 10.1016/j.metabol.2023.155709] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 09/28/2023] [Accepted: 10/14/2023] [Indexed: 10/24/2023]
Abstract
The discovery and rejuvenation of metabolically active brown adipose tissue (BAT) in adult humans have offered a new approach to treat obesity and metabolic diseases. Beyond its accomplished role in adaptive thermogenesis, BAT secretes signaling molecules known as "batokines", which are instrumental in regulating whole-body metabolism via autocrine, paracrine, and endocrine action. In addition to the intrinsic BAT metabolite-oxidizing activity, the endocrine functions of these molecules may help to explain the association between BAT activity and a healthy systemic metabolic profile. Herein, we review the evidence that underscores the significance of BAT-derived metabolites, especially highlighting their role in controlling physiological and metabolic processes involving thermogenesis, substrate metabolism, and other essential biological processes. The conversation extends to their capacity to enhance energy expenditure and mitigate features of obesity and its related metabolic complications. Thus, metabolites derived from BAT may provide new avenues for the discovery of metabolic health-promoting drugs with far-reaching impacts. This review aims to dissect the complexities of the secretory role of BAT in modulating local and systemic metabolism in metabolic health and disease.
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Affiliation(s)
- Khanyisani Ziqubu
- Department of Biochemistry, North-West University, Mmabatho 2745, South Africa
| | - Phiwayinkosi V Dludla
- Cochrane South Africa, South African Medical Research Council, Tygerberg 7505, South Africa; Department of Biochemistry and Microbiology, Faculty of Science and Agriculture, University of Zululand, KwaDlangezwa 3886, South Africa
| | - Sihle E Mabhida
- Non-Communicable Diseases Research Unit, South African Medical Research Council, Tygerberg 7505, South Africa
| | - Babalwa U Jack
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg 7505, South Africa
| | - Susanne Keipert
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Martin Jastroch
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, SE-106 91 Stockholm, Sweden
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Ren S, Zhang L, Tang X, Fan C, Zhao Y, Cheng Q, Zhang Y. Plant Secondary Compounds Promote White Adipose Tissue Browning via Modulation of the Gut Microbiota in Small Mammals. Int J Mol Sci 2023; 24:17420. [PMID: 38139249 PMCID: PMC10743627 DOI: 10.3390/ijms242417420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/08/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
The browning of white adipose tissue (WAT) is a promising area of research for treating metabolic disorders and obesity in the future. However, studies on plant secondary compounds promoting WAT browning are limited. Herein, we explored the effects of swainsonine (SW) on gut microbiota and WAT browning in captive pikas. SW inhibited body mass gain, increased brown adipose tissue (BAT) mass, and induced WAT browning in pikas. The 16S rDNA sequencing revealed a significant reduction in the alpha diversity and altered community structure of the gut microbiota in captive pikas. However, the addition of SW to the diet significantly increased the alpha diversity of gut microbiota and the relative abundance of Akkermansia, Prevotella, and unclassified_f__Lachnospiraceae, along with the complexity of the microbial co-occurrence network structure, which decreased in the guts of captive pikas. Functional profiles showed that SW significantly decreased the relative abundances of energy metabolism, lipid metabolism, and glycan biosynthesis and metabolism, which were enriched in captive pikas. Furthermore, SW decreased deterministic processes of gut microbiota assembly in July and increased them in November. Finally, the genera Prevotella and unclassified_f__Prevotellaceae were positively correlated with BAT mass. Our results highlighted that plant secondary compounds promote WAT browning by modulating the gut microbiota in small mammals.
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Affiliation(s)
- Shien Ren
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, China
- Qinghai Provincial Key Laboratory of Animal Ecological Genomics, Xining 810008, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Liangzhi Zhang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, China
- Qinghai Provincial Key Laboratory of Animal Ecological Genomics, Xining 810008, China
| | - Xianjiang Tang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, China
- Qinghai Provincial Key Laboratory of Animal Ecological Genomics, Xining 810008, China
| | - Chao Fan
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, China
- Qinghai Provincial Key Laboratory of Animal Ecological Genomics, Xining 810008, China
| | - Yaqi Zhao
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, China
- Qinghai Provincial Key Laboratory of Animal Ecological Genomics, Xining 810008, China
| | - Qi Cheng
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, China
- Qinghai Provincial Key Laboratory of Animal Ecological Genomics, Xining 810008, China
| | - Yanming Zhang
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, China
- Qinghai Provincial Key Laboratory of Animal Ecological Genomics, Xining 810008, China
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Aboouf MA, Gorr TA, Hamdy NM, Gassmann M, Thiersch M. Myoglobin in Brown Adipose Tissue: A Multifaceted Player in Thermogenesis. Cells 2023; 12:2240. [PMID: 37759463 PMCID: PMC10526770 DOI: 10.3390/cells12182240] [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: 08/07/2023] [Revised: 09/01/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
Brown adipose tissue (BAT) plays an important role in energy homeostasis by generating heat from chemical energy via uncoupled oxidative phosphorylation. Besides its high mitochondrial content and its exclusive expression of the uncoupling protein 1, another key feature of BAT is the high expression of myoglobin (MB), a heme-containing protein that typically binds oxygen, thereby facilitating the diffusion of the gas from cell membranes to mitochondria of muscle cells. In addition, MB also modulates nitric oxide (NO•) pools and can bind C16 and C18 fatty acids, which indicates a role in lipid metabolism. Recent studies in humans and mice implicated MB present in BAT in the regulation of lipid droplet morphology and fatty acid shuttling and composition, as well as mitochondrial oxidative metabolism. These functions suggest that MB plays an essential role in BAT energy metabolism and thermogenesis. In this review, we will discuss in detail the possible physiological roles played by MB in BAT thermogenesis along with the potential underlying molecular mechanisms and focus on the question of how BAT-MB expression is regulated and, in turn, how this globin regulates mitochondrial, lipid, and NO• metabolism. Finally, we present potential MB-mediated approaches to augment energy metabolism, which ultimately could help tackle different metabolic disorders.
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Affiliation(s)
- Mostafa A. Aboouf
- Institute of Veterinary Physiology, University of Zurich, 8057 Zurich, Switzerland
- Zurich Center for Integrative Human Physiology (ZIHP), University of Zurich, 8057 Zurich, Switzerland
- Department of Biochemistry, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt
| | - Thomas A. Gorr
- Institute of Veterinary Physiology, University of Zurich, 8057 Zurich, Switzerland
| | - Nadia M. Hamdy
- Department of Biochemistry, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt
| | - Max Gassmann
- Institute of Veterinary Physiology, University of Zurich, 8057 Zurich, Switzerland
- Zurich Center for Integrative Human Physiology (ZIHP), University of Zurich, 8057 Zurich, Switzerland
| | - Markus Thiersch
- Institute of Veterinary Physiology, University of Zurich, 8057 Zurich, Switzerland
- Zurich Center for Integrative Human Physiology (ZIHP), University of Zurich, 8057 Zurich, Switzerland
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Liu Y, Qu Y, Cheng C, Tsai PY, Edwards K, Xue S, Pandit S, Eguchi S, Sanghera N, Barrow JJ. Nipsnap1-A regulatory factor required for long-term maintenance of non-shivering thermogenesis. Mol Metab 2023; 75:101770. [PMID: 37423391 PMCID: PMC10404556 DOI: 10.1016/j.molmet.2023.101770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 06/29/2023] [Accepted: 06/30/2023] [Indexed: 07/11/2023] Open
Abstract
OBJECTIVE The activation of non-shivering thermogenesis (NST) has strong potential to combat obesity and metabolic disease. The activation of NST however is extremely temporal and the mechanisms surrounding how the benefits of NST are sustained once fully activated, remain unexplored. The objective of this study is to investigate the role of 4-Nitrophenylphosphatase Domain and Non-Neuronal SNAP25-Like 1 (Nipsnap1) in NST maintenance, which is a critical regulator identified in this study. METHODS The expression of Nipsnap1 was profiled by immunoblotting and RT-qPCR. We generated Nipsnap1 knockout mice (N1-KO) and investigated the function of Nipsnap1 in NST maintenance and whole-body metabolism using whole body respirometry analyses. We evaluate the metabolic regulatory role of Nipsnap1 using cellular and mitochondrial respiration assay. RESULTS Here, we show Nipsnap1 as a critical regulator of long-term thermogenic maintenance in brown adipose tissue (BAT). Nipsnap1 localizes to the mitochondrial matrix and increases its transcript and protein levels in response to both chronic cold and β3 adrenergic signaling. We demonstrated that these mice are unable to sustain activated energy expenditure and have significantly lower body temperature in the face of an extended cold challenge. Furthermore, when mice are exposed to the pharmacological β3 agonist CL 316, 243, the N1-KO mice exhibit significant hyperphagia and altered energy balance. Mechanistically, we demonstrate that Nipsnap1 integrates with lipid metabolism and BAT-specific ablation of Nipsnap1 leads to severe defects in beta-oxidation capacity when exposed to a cold environmental challenge. CONCLUSION Our findings identify Nipsnap1 as a potent regulator of long-term NST maintenance in BAT.
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Affiliation(s)
- Yang Liu
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, 14850, USA
| | - Yue Qu
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, 14850, USA
| | - Chloe Cheng
- Department of Veterinary Medicine, Cornell University, Ithaca, NY, 14850, USA
| | - Pei-Yin Tsai
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, 14850, USA
| | - Kaydine Edwards
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, 14850, USA
| | - Siwen Xue
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, 14850, USA
| | - Supriya Pandit
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, 14850, USA
| | - Sakura Eguchi
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, 14850, USA
| | - Navneet Sanghera
- Department of Biological Sciences, San Jose State University, San Jose, CA, 95192, USA
| | - Joeva J Barrow
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, 14850, USA.
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Zhang Y, Zhao Z, Huang LA, Liu Y, Yao J, Sun C, Li Y, Zhang Z, Ye Y, Yuan F, Nguyen TK, Garlapati NR, Wu A, Egranov SD, Caudle AS, Sahin AA, Lim B, Beretta L, Calin GA, Yu D, Hung MC, Curran MA, Rezvani K, Gan B, Tan Z, Han L, Lin C, Yang L. Molecular mechanisms of snoRNA-IL-15 crosstalk in adipocyte lipolysis and NK cell rejuvenation. Cell Metab 2023; 35:1457-1473.e13. [PMID: 37329887 PMCID: PMC10712687 DOI: 10.1016/j.cmet.2023.05.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 03/03/2023] [Accepted: 05/18/2023] [Indexed: 06/19/2023]
Abstract
Obesity, in which the functional importance of small nucleolar RNAs (snoRNAs) remains elusive, correlates with risk for many cancer types. Here, we identify that the serum copies of adipocyte-expressed SNORD46 correlate with body mass index (BMI), and serum SNORD46 antagonizes interleukin-15 (IL-15) signaling. Mechanically, SNORD46 binds IL-15 via G11, and G11A (a mutation that significantly enhances binding affinity) knockin drives obesity in mice. Functionally, SNORD46 blocks IL-15-induced, FER kinase-dependent phosphorylation of platelet glycoprotein 4 (CD36) and monoglyceride lipase (MGLL) in adipocytes, leading to inhibited lipolysis and browning. In natural killer (NK) cells, SNORD46 suppresses the IL-15-dependent autophagy, leading to reduced viability of obese NK. SNORD46 power inhibitors exhibit anti-obesity effects, concurring with improved viability of obese NK and anti-tumor immunity of CAR-NK cell therapy. Hence, our findings demonstrate the functional importance of snoRNAs in obesity and the utility of snoRNA power inhibitors for antagonizing obesity-associated immune resistance.
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Affiliation(s)
- Yaohua Zhang
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Zilong Zhao
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Lisa A Huang
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yuan Liu
- Center for Epigenetics and Disease Prevention, Institute of Biosciences and Technology, Texas A&M University, Houston, TX, USA
| | - Jun Yao
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Chengcao Sun
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yajuan Li
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Zhao Zhang
- Department of Biochemistry and Molecular Biology, University of Texas Health Science Center at Houston McGovern Medical School, Houston, TX 77030, USA
| | - Youqiong Ye
- Department of Biochemistry and Molecular Biology, University of Texas Health Science Center at Houston McGovern Medical School, Houston, TX 77030, USA
| | - Fei Yuan
- Center for Drug Discovery, Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Tina K Nguyen
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Nikhil Reddy Garlapati
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Andrew Wu
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Sergey D Egranov
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Abigail S Caudle
- Department of Breast Surgical Oncology, Division of Surgery, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Aysegul A Sahin
- Department of Pathology, Division of Pathology and Laboratory Medicine, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Bora Lim
- Oncology/Medicine, Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | - Laura Beretta
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - George A Calin
- Department of Translational Molecular Pathology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Center for RNA Interference and Non-Coding RNAs, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Dihua Yu
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Graduate School of Biomedical Sciences, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Mien-Chie Hung
- Graduate Institute of Biomedical Sciences, Institute of Biochemistry and Molecular Biology, Research Center for Cancer Biology, Cancer Biology and Precision Therapeutics Center, and Center for Molecular Medicine, China Medical University, Taichung 406, Taiwan
| | - Michael A Curran
- Graduate School of Biomedical Sciences, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Department of Immunology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Katayoun Rezvani
- Graduate School of Biomedical Sciences, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Department of Stem Cell Transplantation and Cellular Therapy, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Boyi Gan
- Graduate School of Biomedical Sciences, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Department of Experimental Radiation Oncology, Division of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Zhi Tan
- Center for Drug Discovery, Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX 77030, USA; Department of Pharmacology and Chemical Biology, Baylor College of Medicine, Houston, TX 77030, USA.
| | - Leng Han
- Center for Epigenetics and Disease Prevention, Institute of Biosciences and Technology, Texas A&M University, Houston, TX, USA; Brown Center for Immunotherapy, School of Medicine, Indiana University, Indianapolis, IN 46202, USA; Department of Biostatistics and Health Data Science, School of Medicine, Indiana University, Indianapolis, IN 46202, USA.
| | - Chunru Lin
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Graduate School of Biomedical Sciences, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
| | - Liuqing Yang
- Department of Molecular and Cellular Oncology, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Center for RNA Interference and Non-Coding RNAs, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA; Graduate School of Biomedical Sciences, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
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11
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Han SY, Kim J, Kim BK, Whang WK, Min H. Effects of caffeoylquinic acid analogs derived from aerial parts of Artemisia iwayomogi on adipogenesis. Food Sci Biotechnol 2023; 32:1215-1223. [PMID: 37362808 PMCID: PMC10289966 DOI: 10.1007/s10068-023-01262-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 12/22/2022] [Accepted: 01/10/2023] [Indexed: 02/09/2023] Open
Abstract
Artemisia iwayomogi (AI) is a perennial herb found in Korea. Its ground parts are dried and used in food and traditional medicine for treating hepatitis, inflammation, cholelithiasis, and jaundice. In this study, the anti-obesity effects of single compounds isolated from AI extracts on adipose tissue were investigated. Results demonstrated that caffeoylquinic acid analogs strongly inhibited adipocyte differentiation from 3T3-L1 preadipocytes and reduced neutral lipids in differentiated adipocytes. Accordingly, lipid accumulation in adipocytes decreased, and lipid droplets became granulated. Caffeoylquinic acid analogs suppressed the expression of adipocyte differentiation marker genes, namely, Cebpa, Lep, and Fabp4, but it induced the expression of Ucp1, Ppargc1a, and Fgf21, which are browning biomarkers. Therefore, caffeoylquinic acid analogs from AI inhibited preadipocyte differentiation and induced adipose tissue browning, suggesting that these compounds could be promising therapeutic agents for obesity.
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Affiliation(s)
- Su-Young Han
- College of Pharmacy, Chung-Ang University, 84 Heukseokro, Dongjakgu, Seoul, 06974 Korea
| | - Jisu Kim
- College of Pharmacy, Chung-Ang University, 84 Heukseokro, Dongjakgu, Seoul, 06974 Korea
| | - Bo Kyeong Kim
- College of Pharmacy, Chung-Ang University, 84 Heukseokro, Dongjakgu, Seoul, 06974 Korea
| | - Wan Kyunn Whang
- College of Pharmacy, Chung-Ang University, 84 Heukseokro, Dongjakgu, Seoul, 06974 Korea
| | - Hyeyoung Min
- College of Pharmacy, Chung-Ang University, 84 Heukseokro, Dongjakgu, Seoul, 06974 Korea
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12
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Soler-Vázquez MC, Romero MDM, Todorcevic M, Delgado K, Calatayud C, Benitez-Amaro A, La Chica Lhoëst MT, Mera P, Zagmutt S, Bastías-Pérez M, Ibeas K, Casals N, Escolà-Gil JC, Llorente-Cortés V, Consiglio A, Serra D, Herrero L. Implantation of CPT1AM-expressing adipocytes reduces obesity and glucose intolerance in mice. Metab Eng 2023; 77:256-272. [PMID: 37088334 DOI: 10.1016/j.ymben.2023.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 02/14/2023] [Accepted: 04/16/2023] [Indexed: 04/25/2023]
Abstract
Obesity and its associated metabolic comorbidities are a rising global health and social issue, with novel therapeutic approaches urgently needed. Adipose tissue plays a key role in the regulation of energy balance and adipose tissue-derived mesenchymal stem cells (AT-MSCs) have gained great interest in cell therapy. Carnitine palmitoyltransferase 1A (CPT1A) is the gatekeeper enzyme for mitochondrial fatty acid oxidation. Here, we aimed to generate adipocytes expressing a constitutively active CPT1A form (CPT1AM) that can improve the obese phenotype in mice after their implantation. AT-MSCs were differentiated into mature adipocytes, subjected to lentivirus-mediated expression of CPT1AM or the GFP control, and subcutaneously implanted into mice fed a high-fat diet (HFD). CPT1AM-implanted mice showed lower body weight, hepatic steatosis and serum insulin and cholesterol levels alongside improved glucose tolerance. HFD-induced increases in adipose tissue hypertrophy, fibrosis, inflammation, endoplasmic reticulum stress and apoptosis were reduced in CPT1AM-implanted mice. In addition, the expression of mitochondrial respiratory chain complexes was enhanced in the adipose tissue of CPT1AM-implanted mice. Our results demonstrate that implantation of CPT1AM-expressing AT-MSC-derived adipocytes into HFD-fed mice improves the obese metabolic phenotype, supporting the future clinical use of this ex vivo gene therapy approach.
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Affiliation(s)
- M Carmen Soler-Vázquez
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, Institute of Biomedicine of the University of Barcelona (IBUB), Universitat de Barcelona (UB), E-08028, Barcelona, Spain
| | - María Del Mar Romero
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, Institute of Biomedicine of the University of Barcelona (IBUB), Universitat de Barcelona (UB), E-08028, Barcelona, Spain; Centro de Investigación Biomédica en Red (CIBER) de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029, Madrid, Spain
| | - Marijana Todorcevic
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, Institute of Biomedicine of the University of Barcelona (IBUB), Universitat de Barcelona (UB), E-08028, Barcelona, Spain
| | - Katia Delgado
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, Institute of Biomedicine of the University of Barcelona (IBUB), Universitat de Barcelona (UB), E-08028, Barcelona, Spain
| | - Carles Calatayud
- Department of Pathology and Experimental Therapeutics, Bellvitge University Hospital- IDIBELL, E-08908, Hospitalet de Llobregat, Barcelona, Spain; Institute of Biomedicine of the University of Barcelona (IBUB), Universitat de Barcelona, E-08028, Barcelona, Spain
| | - Aleyda Benitez-Amaro
- Lipids and Cardiovascular Pathology, Institut d'Investigacions Biomèdiques de Barcelona (IIBB-CSIC), 08041, Barcelona, Spain; Institut d'Investigació Biomèdica Sant Pau (IIB SANT PAU), 08041, Barcelona, Spain
| | - Maria Teresa La Chica Lhoëst
- Lipids and Cardiovascular Pathology, Institut d'Investigacions Biomèdiques de Barcelona (IIBB-CSIC), 08041, Barcelona, Spain; Institut d'Investigació Biomèdica Sant Pau (IIB SANT PAU), 08041, Barcelona, Spain; Universitat Autònoma de Barcelona, Spain
| | - Paula Mera
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, Institute of Biomedicine of the University of Barcelona (IBUB), Universitat de Barcelona (UB), E-08028, Barcelona, Spain; Centro de Investigación Biomédica en Red (CIBER) de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029, Madrid, Spain
| | - Sebastián Zagmutt
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, Institute of Biomedicine of the University of Barcelona (IBUB), Universitat de Barcelona (UB), E-08028, Barcelona, Spain
| | - Marianela Bastías-Pérez
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, Institute of Biomedicine of the University of Barcelona (IBUB), Universitat de Barcelona (UB), E-08028, Barcelona, Spain
| | - Kevin Ibeas
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, Institute of Biomedicine of the University of Barcelona (IBUB), Universitat de Barcelona (UB), E-08028, Barcelona, Spain; Centro de Investigación Biomédica en Red (CIBER) de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029, Madrid, Spain
| | - Núria Casals
- Centro de Investigación Biomédica en Red (CIBER) de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029, Madrid, Spain; Basic Sciences Department, Faculty of Medicine and Health Sciences, Universitat Internacional de Catalunya (UIC), E-08195, Sant Cugat del Vallés, Barcelona, Spain
| | - Joan Carles Escolà-Gil
- Institut d'Investigació Biomèdica Sant Pau (IIB SANT PAU), 08041, Barcelona, Spain; CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), 28029, Madrid, Spain
| | - Vicenta Llorente-Cortés
- Lipids and Cardiovascular Pathology, Institut d'Investigacions Biomèdiques de Barcelona (IIBB-CSIC), 08041, Barcelona, Spain; Institut d'Investigació Biomèdica Sant Pau (IIB SANT PAU), 08041, Barcelona, Spain; CIBER of Cardiovascular (CIBERCV), Instituto de Salud Carlos III, E-28029, Madrid, Spain
| | - Antonella Consiglio
- Department of Pathology and Experimental Therapeutics, Bellvitge University Hospital- IDIBELL, E-08908, Hospitalet de Llobregat, Barcelona, Spain; Institute of Biomedicine of the University of Barcelona (IBUB), Universitat de Barcelona, E-08028, Barcelona, Spain; Department of Molecular and Translational Medicine, University of Brescia, Piazza del Mercato, 15, 25121, Brescia, BS, Italy
| | - Dolors Serra
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, Institute of Biomedicine of the University of Barcelona (IBUB), Universitat de Barcelona (UB), E-08028, Barcelona, Spain; Centro de Investigación Biomédica en Red (CIBER) de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029, Madrid, Spain
| | - Laura Herrero
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, Institute of Biomedicine of the University of Barcelona (IBUB), Universitat de Barcelona (UB), E-08028, Barcelona, Spain; Centro de Investigación Biomédica en Red (CIBER) de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029, Madrid, Spain.
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13
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Chen L, Li H, Ru Y, Song Y, Shen Y, Zhao L, Huang G, Chen Y, Qi Z, Li R, Dong C, Fang J, Lam TKY, Yang Z, Cai Z. Xanthine-derived reactive oxygen species exacerbates adipose tissue disorders in male db/db mice induced by real-ambient PM2.5 exposure. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 882:163592. [PMID: 37087002 DOI: 10.1016/j.scitotenv.2023.163592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 04/11/2023] [Accepted: 04/15/2023] [Indexed: 05/03/2023]
Abstract
Epidemiological and experimental data have associated exposure to fine particulate matter (PM2.5) with various metabolic dysfunctions and diseases, including overweight and type 2 diabetes. Adipose tissue is an energy pool for storing lipids, a necessary regulator of glucose homeostasis, and an active endocrine organ, playing an essential role in developing various related diseases such as diabetes and obesity. However, the molecular mechanisms underlying PM2.5-impaired functions in adipose tissue have rarely been explored. In this work, metabolomics based on liquid chromatography-mass spectrometry was performed to study the adverse impacts of PM2.5 exposure on brown adipose tissue (BAT) and white adipose tissue (WAT) in the diabetic mouse model. We found the effects of PM2.5 exposure by comparing the different metabolites in both adipose tissues of male db/db mice using real-ambient PM2.5 exposure. The results showed that PM2.5 exposure changed the purine metabolism in mice, especially the dramatic increase of xanthine content in both WAT and BAT. These changes led to significant oxidative stress. Then the results from real-time quantitative polymerase chain reaction showed that PM2.5 exposure could cause the production of inflammatory factors in both adipose tissues. Moreover, the increased reactive oxygen species (ROS) promoted triglyceride accumulation in WAT and inhibited its decomposition, causing increased WAT content in db/db mice. In addition, PM2.5 exposure significantly suppressed thermogenesis and affected energy metabolism in the BAT of male db/db mice, which may deteriorate insulin sensitivity and blood glucose regulation. This research demonstrated the impact of PM2.5 on the adipose tissue of male db/db mice, which may be necessary for public health.
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Affiliation(s)
- Leijian Chen
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong
| | - Huankai Li
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong
| | - Yi Ru
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong
| | - Yuanyuan Song
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong
| | - Yuting Shen
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong
| | - Lifang Zhao
- Institute of Environmental Science, Shanxi University, Taiyuan 030006, China
| | - Gefei Huang
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong
| | - Yi Chen
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong
| | - Zenghua Qi
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Ruijin Li
- Institute of Environmental Science, Shanxi University, Taiyuan 030006, China
| | - Chuan Dong
- Institute of Environmental Science, Shanxi University, Taiyuan 030006, China
| | - Jiacheng Fang
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong
| | - Thomas Ka-Yam Lam
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong
| | - Zhu Yang
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong.
| | - Zongwei Cai
- State Key Laboratory of Environmental and Biological Analysis, Department of Chemistry, Hong Kong Baptist University, Hong Kong
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14
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Kreissl FK, Banki MA, Droujinine IA. Molecular methods to study protein trafficking between organs. Proteomics 2023; 23:e2100331. [PMID: 36478633 DOI: 10.1002/pmic.202100331] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 11/16/2022] [Accepted: 11/21/2022] [Indexed: 12/13/2022]
Abstract
Interorgan communication networks are key regulators of organismal homeostasis, and their dysregulation is associated with a variety of pathologies. While mass spectrometry proteomics identifies circulating proteins and can correlate their abundance with disease phenotypes, the tissues of origin and destinations of these secreted proteins remain largely unknown. In vitro approaches to study protein secretion are valuable, however, they may not mimic the complexity of in vivo environments. More recently, the development of engineered promiscuous BirA* biotin ligase derivatives has enabled tissue-specific tagging of cellular secreted proteomes in vivo. The use of biotin as a molecular tag provides information on the tissue of origin and destination, and enables the enrichment of low-abundance hormone proteins. Therefore, promiscuous protein biotinylation is a valuable tool to study protein secretion in vivo.
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Affiliation(s)
- Felix K Kreissl
- Department of Immunology and Microbiology, Scripps Research, La Jolla, California, USA
| | - Michael A Banki
- Department of Molecular Medicine, Scripps Research, La Jolla, California, USA
| | - Ilia A Droujinine
- Department of Molecular Medicine, Scripps Research, La Jolla, California, USA
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15
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Unveiling the Role of the Proton Gateway, Uncoupling Proteins (UCPs), in Cancer Cachexia. Cancers (Basel) 2023; 15:cancers15051407. [PMID: 36900198 PMCID: PMC10000250 DOI: 10.3390/cancers15051407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/30/2023] [Accepted: 02/20/2023] [Indexed: 02/25/2023] Open
Abstract
Uncoupling proteins (UCPs) are identified as carriers of proton ions between the mitochondrial inner membrane and the mitochondrial matrix. ATP is mainly generated through oxidative phosphorylation in mitochondria. The proton gradient is generated across the inner mitochondrial membrane and the mitochondrial matrix, which facilitates a smooth transfer of electrons across ETC complexes. Until now, it was thought that the role of UCPs was to break the electron transport chain and thereby inhibit the synthesis of ATP. UCPs allow protons to pass from the inner mitochondrial membrane to the mitochondrial matrix and decrease the proton gradient across the membrane, which results in decreased ATP synthesis and increased production of heat by mitochondria. In recent years, the role of UCPs in other physiological processes has been deciphered. In this review, we first highlighted the different types of UCPs and their precise location across the body. Second, we summarized the role of UCPs in different diseases, mainly metabolic disorders such as obesity and diabetes, cardiovascular complications, cancer, wasting syndrome, neurodegenerative diseases, and kidney complications. Based on our findings, we conclude that UCPs play a major role in maintaining energy homeostasis, mitochondrial functions, ROS production, and apoptosis. Finally, our findings reveal that mitochondrial uncoupling by UCPs may treat many diseases, and extensive clinical studies are required to meet the unmet need of certain diseases.
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16
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Placental mesenchymal stem cells restore glucose and energy homeostasis in obesogenic adipocytes. Cell Tissue Res 2023; 391:127-144. [PMID: 36227376 DOI: 10.1007/s00441-022-03693-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 09/14/2022] [Indexed: 01/18/2023]
Abstract
Obesity (Ob) depicts a state of energy imbalance(s) being characterized by the accumulation of excessive fat and which predisposes to several metabolic diseases. Mesenchymal stem cells (MSCs) represent a promising option for addressing obesity and its associated metabolic co-morbidities. The present study aims at assessing the beneficial effects of human placental MSCs (P-MSCs) in mitigating Ob-associated insulin resistance (IR) and mitochondrial dysfunction both in vivo and in vitro. Under obesogenic milieu, adipocytes showed a significant reduction in glucose uptake, and impaired insulin signaling with decreased expression of UCP1 and PGC1α, suggestive of dysregulated non-shivering thermogenesis vis-a-vis mitochondrial biogenesis respectively. Furthermore, obesogenic adipocytes demonstrated impaired mitochondrial respiration and energy homeostasis evidenced by reduced oxygen consumption rate (OCR) and blunted ATP/NAD+/NADP+ production respectively. Interestingly, co-culturing adipocytes with P-MSCs activated PI3K-Akt signaling, improved glucose uptake, diminished ROS production, enhanced mitochondrial OCR, improved ATP/NAD+/NADP+ production, and promoted beiging of adipocytes evidenced by upregulated expression of PRDM16, UCP1, and PGC1α expression. In vivo, P-MSCs administration increased the peripheral blood glucose uptake and clearance, and improved insulin sensitivity and lipid profile with a coordinated increase in the ratio of ATP/ADP and NAD+ and NADP+ in the white adipose tissue (WAT), exemplified in WNIN/GR-Ob obese mutant rats. In line with in vitro findings, there was a significant reduction in adipocyte hypertrophy, increased mitochondrial staining, and thermogenesis. Our findings advocate for a therapeutic application of P-MSCs for improving glucose and energy homeostasis, i.e., probably restoring non-shivering thermogenesis towards obesity management.
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17
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Shin KC, Huh JY, Ji Y, Han JS, Han SM, Park J, Nahmgoong H, Lee WT, Jeon YG, Kim B, Park C, Kang H, Choe SS, Kim JB. VLDL-VLDLR axis facilitates brown fat thermogenesis through replenishment of lipid fuels and PPARβ/δ activation. Cell Rep 2022; 41:111806. [PMID: 36516764 DOI: 10.1016/j.celrep.2022.111806] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 09/22/2022] [Accepted: 11/18/2022] [Indexed: 12/15/2022] Open
Abstract
In mammals, brown adipose tissue (BAT) is specialized to conduct non-shivering thermogenesis for survival under cold acclimation. Although emerging evidence suggests that lipid metabolites are essential for heat generation in cold-activated BAT, the underlying mechanisms of lipid uptake in BAT have not been thoroughly understood. Here, we show that very-low-density lipoprotein (VLDL) uptaken by VLDL receptor (VLDLR) plays important roles in thermogenic execution in BAT. Compared with wild-type mice, VLDLR knockout mice exhibit impaired thermogenic features. Mechanistically, VLDLR-mediated VLDL uptake provides energy sources for mitochondrial oxidation via lysosomal processing, subsequently enhancing thermogenic activity in brown adipocytes. Moreover, the VLDL-VLDLR axis potentiates peroxisome proliferator activated receptor (PPAR)β/δ activity with thermogenic gene expression in BAT. Accordingly, VLDL-induced thermogenic capacity is attenuated in brown-adipocyte-specific PPARβ/δ knockout mice. Collectively, these data suggest that the VLDL-VLDLR axis in brown adipocytes is a key factor for thermogenic execution during cold exposure.
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Affiliation(s)
- Kyung Cheul Shin
- Center for Adipocyte Structure and Function, Institute of Molecular Biology and Genetics, School of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Jin Young Huh
- Center for Adipocyte Structure and Function, Institute of Molecular Biology and Genetics, School of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Yul Ji
- Center for Adipocyte Structure and Function, Institute of Molecular Biology and Genetics, School of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Ji Seul Han
- Center for Adipocyte Structure and Function, Institute of Molecular Biology and Genetics, School of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Sang Mun Han
- Center for Adipocyte Structure and Function, Institute of Molecular Biology and Genetics, School of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Jeu Park
- Center for Adipocyte Structure and Function, Institute of Molecular Biology and Genetics, School of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Hahn Nahmgoong
- Center for Adipocyte Structure and Function, Institute of Molecular Biology and Genetics, School of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Won Taek Lee
- Center for Adipocyte Structure and Function, Institute of Molecular Biology and Genetics, School of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Yong Geun Jeon
- Center for Adipocyte Structure and Function, Institute of Molecular Biology and Genetics, School of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Bohyeon Kim
- Center for Adipocyte Structure and Function, Institute of Molecular Biology and Genetics, School of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Chanyoon Park
- Interdisciplinary Graduate Program in Genetic Engineering, Seoul National University, Seoul 08826, Korea
| | - Heonjoong Kang
- Interdisciplinary Graduate Program in Genetic Engineering, Seoul National University, Seoul 08826, Korea; School of Earth and Environmental Sciences, Interdisciplinary Graduate Program in Genetic Engineering, Research Institute of Oceanography, Seoul National University, Seoul 08826, Korea
| | - Sung Sik Choe
- Center for Adipocyte Structure and Function, Institute of Molecular Biology and Genetics, School of Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Jae Bum Kim
- Center for Adipocyte Structure and Function, Institute of Molecular Biology and Genetics, School of Biological Sciences, Seoul National University, Seoul 08826, Korea.
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18
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Alito A, Quartarone A, Leonardi G, Tisano A, Bruschetta A, Cucinotta F, Milardi D, Portaro S. Brown adipose tissue human biomarkers: Which one fits best? A narrative review. Medicine (Baltimore) 2022; 101:e32181. [PMID: 36482525 PMCID: PMC9726395 DOI: 10.1097/md.0000000000032181] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Adipose tissue (AT) is an endocrine metabolically dynamic active tissue that plays a central role in the systemic energy balance and metabolic regulation. Brown AT represents approximately 1% of adult human AT, with an energy-burning function that uses fat to create heat. Brown AT activity was measured using 18F-fluorodeoxyglucose positron emission tomography/computed tomography. It has been shown that cold exposure could promote brown AT activation. However, many factors, such as aging and body mass index, may interfere with this activity. Many authors have discussed the role of factors specifically secreted by the AT in response to cold exposure. The aim of this review is to properly understand the effects of cold on AT and biomarkers and their possible application in rehabilitation medicine. A comprehensive literature review was performed to identify published studies regarding biomarkers of cold effects on Brown AT searching the following databases: PubMed, Science Direct, and Web of Science, from 2012 to 2022. After evaluation of the inclusion and exclusion criteria, 9 studies were included in this review. We reported the overall influence of cold exposure on brown AT activity, its related biomarkers, and metabolism, demonstrating that the therapeutic role of cold exposure needs to be better standardized. From our data, it is important to design proper clinical trials because most cold applied protocols lack a common and homogeneous methodology.
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Affiliation(s)
- Angelo Alito
- Department of Biomedical, Dental Sciences and Morphological and Functional Images, University of Messina, Messina, Italy
- * Correspondence: Angelo Alito, Department of Biomedical, Dental Sciences and Morphological and Functional Images, University of Messina, Via Consolare Valeria, 1, Messina, Cap 98125, Italy (e-mail: )
| | | | - Giulia Leonardi
- Department of Physical and Rehabilitation Medicine and Sports Medicine, Policlinico “G. Martino”, Messina, Italy
| | - Adriana Tisano
- Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
| | | | | | - Demetrio Milardi
- Department of Biomedical, Dental Sciences and Morphological and Functional Images, University of Messina, Messina, Italy
| | - Simona Portaro
- Department of Physical and Rehabilitation Medicine and Sports Medicine, Policlinico “G. Martino”, Messina, Italy
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19
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Cheng R, Fujinaga M, Yang J, Rong J, Haider A, Ogasawara D, Van RS, Shao T, Chen Z, Zhang X, Calderon Leon ER, Zhang Y, Mori W, Kumata K, Yamasaki T, Xie L, Sun S, Wang L, Ran C, Shao Y, Cravatt B, Josephson L, Zhang MR, Liang SH. A novel monoacylglycerol lipase-targeted 18F-labeled probe for positron emission tomography imaging of brown adipose tissue in the energy network. Acta Pharmacol Sin 2022; 43:3002-3010. [PMID: 35513432 PMCID: PMC9622914 DOI: 10.1038/s41401-022-00912-8] [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: 01/10/2022] [Accepted: 04/13/2022] [Indexed: 11/09/2022] Open
Abstract
Monoacylglycerol lipase (MAGL) constitutes a serine hydrolase that orchestrates endocannabinoid homeostasis and exerts its function by catalyzing the degradation of 2-arachidonoylglycerol (2-AG) to arachidonic acid (AA). As such, selective inhibition of MAGL represents a potential therapeutic and diagnostic approach to various pathologies including neurodegenerative disorders, metabolic diseases and cancers. Based on a unique 4-piperidinyl azetidine diamide scaffold, we developed a reversible and peripheral-specific radiofluorinated MAGL PET ligand [18F]FEPAD. Pharmacokinetics and binding studies on [18F]FEPAD revealed its outstanding specificity and selectivity towards MAGL in brown adipose tissue (BAT) - a tissue that is known to be metabolically active. We employed [18F]FEPAD in PET studies to assess the abundancy of MAGL in BAT deposits of mice and found a remarkable degree of specific tracer binding in the BAT, which was confirmed by post-mortem tissue analysis. Given the negative regulation of endocannabinoids on the metabolic BAT activity, our study supports the concept that dysregulation of MAGL is likely linked to metabolic disorders. Further, we now provide a suitable imaging tool that allows non-invasive assessment of MAGL in BAT deposits, thereby paving the way for detailed mechanistic studies on the role of BAT in endocannabinoid system (ECS)-related pathologies.
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Affiliation(s)
- Ran Cheng
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
- School of Medical Imaging, Tianjin Medical University, Tianjin, 300203, China
| | - Masayuki Fujinaga
- Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, 263-8555, Japan
| | - Jing Yang
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02125, USA
| | - Jian Rong
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
| | - Ahmed Haider
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
| | - Daisuke Ogasawara
- The Skaggs Institute for Chemical Biology and Department of Chemical Physiology, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Richard S Van
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK, 73019, USA
| | - Tuo Shao
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
| | - Zhen Chen
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
| | - Xiaofei Zhang
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
| | - Erick R Calderon Leon
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK, 73019, USA
| | - Yiding Zhang
- Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, 263-8555, Japan
| | - Wakana Mori
- Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, 263-8555, Japan
| | - Katsushi Kumata
- Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, 263-8555, Japan
| | - Tomoteru Yamasaki
- Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, 263-8555, Japan
| | - Lin Xie
- Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, 263-8555, Japan
| | - Shaofa Sun
- Hubei Collaborative Innovation Centre for Non-power Nuclear Technology, College of Nuclear Technology & Chemistry and Biology, Hubei University of Science and Technology, Xianning, Hubei Province, 437100, China
| | - Lu Wang
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
| | - Chongzhao Ran
- Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02125, USA
| | - Yihan Shao
- Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK, 73019, USA
| | - Benjamin Cravatt
- The Skaggs Institute for Chemical Biology and Department of Chemical Physiology, The Scripps Research Institute, La Jolla, CA, 92037, USA
| | - Lee Josephson
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
| | - Ming-Rong Zhang
- Department of Radiopharmaceuticals Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Chiba, 263-8555, Japan.
| | - Steven H Liang
- Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA.
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20
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Liu X, Tang J, Zhang R, Zhan S, Zhong T, Guo J, Wang Y, Cao J, Li L, Zhang H, Wang L. Cold exposure induces lipid dynamics and thermogenesis in brown adipose tissue of goats. BMC Genomics 2022; 23:528. [PMID: 35864448 PMCID: PMC9306100 DOI: 10.1186/s12864-022-08765-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 07/13/2022] [Indexed: 12/13/2022] Open
Abstract
Background Adaptive thermogenesis by brown adipose tissue (BAT) is important to the maintenance of temperature in newborn mammals. Cold exposure activates gene expression and lipid metabolism to provide energy for BAT thermogenesis. However, knowledge of BAT metabolism in large animals after cold exposure is still limited. Results In this study, we found that cold exposure induced expression of BAT thermogenesis genes and increased the protein levels of UCP1 and PGC1α. Pathway analysis showed that cold exposure activated BAT metabolism, which involved in cGMP-PKG, TCA cycle, fatty acid elongation, and degradation pathways. These were accompanied by decreased triglyceride (TG) content and increased phosphatidylcholine (PC) and phosphatidylethanolamine (PE) content in BAT. Conclusion These results demonstrate that cold exposure induces metabolites involved in glycerolipids and glycerophospholipids metabolism in BAT. The present study provides evidence for lipid composition associated with adaptive thermogenesis in goat BAT and metabolism pathways regulated by cold exposure. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-022-08765-5.
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Affiliation(s)
- Xin Liu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China.,College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
| | - Jing Tang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China.,College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
| | - Runan Zhang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China.,College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
| | - Siyuan Zhan
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China.,College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
| | - Tao Zhong
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China.,College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
| | - Jiazhong Guo
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
| | - Yan Wang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
| | - Jiaxue Cao
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
| | - Li Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China.,College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
| | - Hongping Zhang
- College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China
| | - Linjie Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China. .,College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, Sichuan, People's Republic of China.
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21
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Anti-Obesity Activities of Standardized Ecklonia stolonifera Extract in 3T3-L1 Preadipocytes and High-Fat-Diet-Fed ICR Mice. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12105115] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The purpose of this study was to prepare a clinical trial test material (ESETM, test material of Ecklonia stolonifera extract) to develop a health functional food based on its anti-obesity effect. The anti-obesity effect of ESETM was evaluated in 3T3-L1 adipocytes and obese mice fed a high-fat diet (HFD) to confirm its nonclinical trial effect before application in clinical trial. Adipogenesis is a process of preadipocyte differentiation that causes an increase in the production of reactive oxygen species (ROS) and lipid accumulation. In vitro study results indicated that ESETM outstandingly inhibits the production of ROS and lipid accumulation during adipogenesis and lipogenesis. In vivo, ESETM-treated ICR mice had reduced HFD-induced weight change, food efficiency ratio, adipose tissue weight, liver weight and showed improved serum lipid profiles. Our results show that ESETM inhibits weight change by regulating the adipogenesis, lipogenesis, lipolysis, and thermogenesis pathways.
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22
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Huang Y, Zhou JH, Zhang H, Canfran-Duque A, Singh AK, Perry RJ, Shulman GI, Fernandez-Hernando C, Min W. Brown adipose TRX2 deficiency activates mtDNA-NLRP3 to impair thermogenesis and protect against diet-induced insulin resistance. J Clin Invest 2022; 132:148852. [PMID: 35202005 PMCID: PMC9057632 DOI: 10.1172/jci148852] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 02/23/2022] [Indexed: 02/03/2023] Open
Abstract
Brown adipose tissue (BAT), a crucial heat-generating organ, regulates whole-body energy metabolism by mediating thermogenesis. BAT inflammation is implicated in the pathogenesis of mitochondrial dysfunction and impaired thermogenesis. However, the link between BAT inflammation and systematic metabolism remains unclear. Herein, we use mice with BAT deficiency of thioredoxin-2 (TRX2), a protein that scavenges mitochondrial reactive oxygen species (ROS), to evaluate the impact of BAT inflammation on metabolism and thermogenesis and its underlying mechanism. Our results show that BAT-specific TRX2 ablation improves systematic metabolic performance via enhancing lipid uptake, which protects mice from diet-induced obesity, hypertriglyceridemia, and insulin resistance. TRX2 deficiency impairs adaptive thermogenesis by suppressing fatty acid oxidation. Mechanistically, loss of TRX2 induces excessive mitochondrial ROS, mitochondrial integrity disruption, and cytosolic release of mitochondrial DNA, which in turn activate aberrant innate immune responses in BAT, including the cGAS/STING and the NLRP3 inflammasome pathways. We identify NLRP3 as a key converging point, as its inhibition reverses both the thermogenesis defect and the metabolic benefits seen under nutrient overload in BAT-specific Trx2-deficient mice. In conclusion, we identify TRX2 as a critical hub integrating oxidative stress, inflammation, and lipid metabolism in BAT, uncovering an adaptive mechanism underlying the link between BAT inflammation and systematic metabolism.
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Affiliation(s)
- Yanrui Huang
- Interdepartmental Program in Vascular Biology and Therapeutics, Department of Pathology
| | - Jenny H Zhou
- Interdepartmental Program in Vascular Biology and Therapeutics, Department of Pathology
| | - Haifeng Zhang
- Interdepartmental Program in Vascular Biology and Therapeutics, Department of Pathology
| | - Alberto Canfran-Duque
- Interdepartmental Program in Vascular Biology and Therapeutics, Department of Comparative Medicine, and
| | - Abhishek K Singh
- Interdepartmental Program in Vascular Biology and Therapeutics, Department of Comparative Medicine, and
| | - Rachel J Perry
- Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Gerald I Shulman
- Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Carlos Fernandez-Hernando
- Interdepartmental Program in Vascular Biology and Therapeutics, Department of Pathology.,Interdepartmental Program in Vascular Biology and Therapeutics, Department of Comparative Medicine, and
| | - Wang Min
- Interdepartmental Program in Vascular Biology and Therapeutics, Department of Pathology
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23
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Frankl JA, An Y, Sherwood A, Hao G, Huang FY, Thapa P, Clegg DJ, Sun X, Scherer PE, Öz OK. Comparison of BMIPP-SPECT/CT to 18FDG-PET/CT for Imaging Brown or Browning Fat in a Preclinical Model. Int J Mol Sci 2022; 23:4880. [PMID: 35563272 PMCID: PMC9101718 DOI: 10.3390/ijms23094880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 04/14/2022] [Accepted: 04/25/2022] [Indexed: 11/17/2022] Open
Abstract
Obesity is a leading cause of preventable death and morbidity. To elucidate the mechanisms connecting metabolically active brown adipose tissue (BAT) and metabolic health may provide insights into methods of treatment for obesity-related conditions. 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18FDG-PET/CT) is traditionally used to image human BAT activity. However, the primary energy source of BAT is derived from intracellular fatty acids and not glucose. Beta-methyl-p-iodophenylpentadecanoic acid (BMIPP) is a fatty acid analogue amenable to in vivo imaging by single photon emission computed tomography/CT (SPECT/CT) when radiolabeled with iodine isotopes. In this study, we compare the use of 18FDG-PET/CT and 125I-BMIPP-SPECT/CT for fat imaging to ascertain whether BMIPP is a more robust candidate for the non-invasive evaluation of metabolically active adipose depots. Interscapular BAT, inguinal white adipose tissue (iWAT), and gonadal white adipose tissue (gWAT) uptake of 18FDG and 125I-BMIPP was quantified in mice following treatment with the BAT-stimulating drug CL-316,243 or saline vehicle control. After CL-316,243 treatment, uptake of both radiotracers increased in BAT and iWAT. The standard uptake value (SUVmean) for 18FDG and 125I-BMIPP significantly correlated in these depots, although uptake of 125I-BMIPP in BAT and iWAT more closely mimicked the fold-change in metabolic rate as measured by an extracellular flux analyzer. Herein, we find that imaging BAT with the radioiodinated fatty acid analogue BMIPP yields more physiologically relevant data than 18FDG-PET/CT, and its conventional use may be a pivotal tool for evaluating BAT in both mice and humans.
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Affiliation(s)
- Joseph A. Frankl
- Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390, USA; (J.A.F.); (A.S.); (G.H.); (P.T.); (X.S.)
| | - Yu An
- Department of Anesthesiology, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX 77030, USA;
| | - Amber Sherwood
- Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390, USA; (J.A.F.); (A.S.); (G.H.); (P.T.); (X.S.)
| | - Guiyang Hao
- Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390, USA; (J.A.F.); (A.S.); (G.H.); (P.T.); (X.S.)
| | - Feng-Yun Huang
- Department of Medical Imaging and Radiological Sciences, Central Taiwan University of Science and Technology, No. 666, Buzih Road, Beitun District, Taichung City 406053, Taiwan;
| | - Pawan Thapa
- Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390, USA; (J.A.F.); (A.S.); (G.H.); (P.T.); (X.S.)
| | - Deborah J. Clegg
- Department of Internal Medicine, Texas Tech Health Sciences Center, 5001 El Paso Dr, El Paso, TX 79905, USA;
| | - Xiankai Sun
- Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390, USA; (J.A.F.); (A.S.); (G.H.); (P.T.); (X.S.)
| | - Philipp E. Scherer
- Touchstone Diabetes Center, Department of Internal Medicine, Southwestern Medical Center, University of Texas, 5323 Harry Hines Blvd, Dallas, TX 75390, USA;
| | - Orhan K. Öz
- Department of Radiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390, USA; (J.A.F.); (A.S.); (G.H.); (P.T.); (X.S.)
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24
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Guo B, Liu J, Wang B, Zhang C, Su Z, Zhao M, Qin L, Zhang W, Zheng R. Withaferin A Promotes White Adipose Browning and Prevents Obesity Through Sympathetic Nerve-Activated Prdm16-FATP1 Axis. Diabetes 2022; 71:249-263. [PMID: 34732538 DOI: 10.2337/db21-0470] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 11/01/2021] [Indexed: 11/13/2022]
Abstract
The increasing prevalence of obesity has resulted in demands for the development of new effective strategies for obesity treatment. Withaferin A (WA) shows a great potential for prevention of obesity by sensitizing leptin signaling in the hypothalamus. However, the mechanism underlying the weight- and adiposity-reducing effects of WA remains to be elucidated. In this study, we report that WA treatment induced white adipose tissue (WAT) browning, elevated energy expenditure, decreased respiratory exchange ratio, and prevented high-fat diet-induced obesity. The sympathetic chemical denervation dampened the WAT browning and also impeded the reduction of adiposity in WA-treated mice. WA markedly upregulated the levels of Prdm16 and FATP1 (Slc27a1) in the inguinal WAT (iWAT), and this was blocked by sympathetic denervation. Prdm16 or FATP1 knockdown in iWAT abrogated the WAT browning-inducing effects of WA and restored the weight gain and adiposity in WA-treated mice. Together, these findings suggest that WA induces WAT browning through the sympathetic nerve-adipose axis, and the adipocytic Prdm16-FATP1 pathway mediates the promotive effects of WA on white adipose browning.
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Affiliation(s)
- Bingbing Guo
- Department of Anatomy, Histology and Embryology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing, China
| | - Jiarui Liu
- Department of Anatomy, Histology and Embryology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing, China
| | - Bingwei Wang
- Department of Anatomy, Histology and Embryology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing, China
| | - Chenyu Zhang
- Department of Anatomy, Histology and Embryology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing, China
| | - Zhijie Su
- Department of Anatomy, Histology and Embryology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing, China
| | - Miao Zhao
- Department of Anatomy, Histology and Embryology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing, China
| | - Lihua Qin
- Department of Anatomy, Histology and Embryology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing, China
| | - Weiguang Zhang
- Department of Anatomy, Histology and Embryology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing, China
| | - Ruimao Zheng
- Department of Anatomy, Histology and Embryology, School of Basic Medical Sciences, Health Science Center, Peking University, Beijing, China
- Neuroscience Research Institute, Peking University, Beijing, China
- Key Laboratory for Neuroscience of Ministry of Education, Peking University, Beijing, China
- Key Laboratory for Neuroscience of National Health Commission, Peking University, Beijing, China
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25
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Li HY, Peng ZG. Targeting lipophagy as a potential therapeutic strategy for nonalcoholic fatty liver disease. Biochem Pharmacol 2022; 197:114933. [PMID: 35093393 DOI: 10.1016/j.bcp.2022.114933] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 01/04/2022] [Accepted: 01/21/2022] [Indexed: 02/09/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is becoming an increasingly serious disease worldwide. Unfortunately, no specific drug has been approved to treat NAFLD. Accumulating evidence suggests that lipotoxicity, which is induced by an excess of intracellular triacylglycerols (TAGs), is a potential mechanism underlying the ill-defined progression of NAFLD. Under physiological conditions, a balance is maintained between TAGs and free fatty acids (FFAs) in the liver. TAGs are catabolized to FFAs through neutral lipolysis and/or lipophagy, while FFAs can be anabolized to TAGs through an esterification reaction. However, in the livers of patients with NAFLD, lipophagy appears to fail. Reversing this abnormal state through several lipophagic molecules (mTORC1, AMPK, PLIN, etc.) facilitates NAFLD amelioration; therefore, restoring failed lipophagy may be a highly efficient therapeutic strategy for NAFLD. Here, we outline the lipophagy phases with the relevant important proteins and discuss the roles of lipophagy in the progression of NAFLD. Additionally, the potential candidate drugs with therapeutic value targeting these proteins are discussed to show novel strategies for future treatment of NAFLD.
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Affiliation(s)
- Hong-Ying Li
- CAMS Key Laboratory of Antiviral Drug Research, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Zong-Gen Peng
- CAMS Key Laboratory of Antiviral Drug Research, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China; Key Laboratory of Biotechnology of Antibiotics, The National Health and Family Planning Commission (NHFPC), Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
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26
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Xiong Q, Sun L, Luo Y, Yun H, Shen X, Yin H, Chen X, Lin X. Different Isocaloric Meals and Adiposity Modify Energy Expenditure, Clinical and Metabolomic Biomarkers During Resting and Exercise States in a Randomized Cross-over Acute Trial of Normal Weight and Overweight/obese Men. J Nutr 2022; 152:1118-1129. [PMID: 36967169 DOI: 10.1093/jn/nxac006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 11/02/2021] [Accepted: 01/06/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Few studies have assessed the integrative effects of diet, BMI, and exercise on postprandial changes of energy and circulating metabolic profiles. OBJECTIVES We aimed to assess the collective effects of three isocaloric diets high in carbohydrate (74.2% energy), fat (64.6% energy), or protein (39.5% energy) on energy expenditure, clinical and metabolomic biomarkers under resting and exercise conditions in normal-weight and overweight/obese men. METHODS This cross-over controlled acute trial included 20 normal-weight (BMI: 18.5- <24) and 20 overweight/obese (BMI ≥ 24 kg/m2) men aged 18-45 years. Each of three test meals was provided for two continuous days: "Resting Day" without exercise, followed by "Exercise Day" with a bicycling exercise of 50% maximal oxygen consumption (postprandial 90-120 min). Energy expenditure (exploratory outcome of primary interest) was measured using indirect calorimetry. Fasting and postprandial 2-hour serum clinical and metabolomic biomarkers (secondary interest) were measured. Mixed models were used to examine the effects of diet, time, and/or BMI category. RESULTS On Resting Day, no significant between-meal differences were detected for energy expenditure. However, high-carbohydrate and high-fat meals induced the highest postprandial 2-hour increase in glucose (0.34 ± 0.15 mmol/L) and triglyceride (0.95 ± 0.09 mmol/L) respectively, while high-protein meal reduced glucose (-0.48 ± 0.08 mmol/L) and total cholesterol (-0.01 ± 0.03 mmol/L, all Pdiet < 0.001). On Exercise Day, high-carbohydrate diet significantly promoted carbohydrate oxidation rate but suppressed fat oxidation rate (Pdiet < 0.05), while its postprandial glucose response was attenuated by bicycling (-0.31 ± 0.03 mmol/L, Pexercise < 0.001). 69 metabolites were identified as key features in discriminating the three meals, and overweight/obese men had more varieties of metabolites than normal-weight men. CONCLUSIONS Three isocaloric meals induced unique postprandial changes in clinical and metabolomic biomarkers, while exercise prevented high-carbohydrate meal induced hyperglycemia. Overweight/obese men were more responsive to the meal challenges than normal-weight men. This trial was registered at clinicaltrials.gov as NCT03231618.
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Affiliation(s)
- Quan Xiong
- Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Liang Sun
- Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Yaogan Luo
- Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Huan Yun
- Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Xia Shen
- Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China.,School of Life Science and Technology, Shanghai Tech University, Shanghai, China
| | - Huiyong Yin
- Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China.,School of Life Science and Technology, Shanghai Tech University, Shanghai, China.,Key Laboratory of Food Safety Risk Assessment, Ministry of Health, Beijing, China
| | - Xiafei Chen
- Huadong Hospital Affiliated with Fudan University, Shanghai, China
| | - Xu Lin
- Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China.,Key Laboratory of Systems Health Science of Zhejiang Province, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Hangzhou, China
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Jin H, Oh HJ, Cho S, Lee OH, Lee BY. Okra ( Abelmoschus esculentus L. Moench) prevents obesity by reducing lipid accumulation and increasing white adipose browning in high-fat diet-fed mice. Food Funct 2022; 13:11840-11852. [DOI: 10.1039/d2fo02790a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Anti-obesity effects of OKC in HFD-fed obese mice. Treatment with OKC reduced lipid accumulation and promoted energy expenditure through browning. This was associated with improvements in the hyperglycemia, dyslipidemia, and hepatic steatosis.
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Affiliation(s)
- Heegu Jin
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Gyeonggi 13488, Republic of Korea
| | - Hyun-Ji Oh
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Gyeonggi 13488, Republic of Korea
| | - Sehaeng Cho
- Syspang Co. Ltd, Seoul 06211, Republic of Korea
- Yonsei Medical Clinic, Seoul 04379, Republic of Korea
| | - Ok-Hwan Lee
- Department of Food Biotechnology and Environmental Science, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Boo-Yong Lee
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Gyeonggi 13488, Republic of Korea
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28
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Wang F, Zou J, Xu H, Huang W, Zhang X, Wei Z, Li X, Liu Y, Zou J, Liu F, Zhu H, Yi H, Guan J, Yin S. Effects of Chronic Intermittent Hypoxia and Chronic Sleep Fragmentation on Gut Microbiome, Serum Metabolome, Liver and Adipose Tissue Morphology. Front Endocrinol (Lausanne) 2022; 13:820939. [PMID: 35178032 PMCID: PMC8846366 DOI: 10.3389/fendo.2022.820939] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 01/06/2022] [Indexed: 12/29/2022] Open
Abstract
Chronic intermittent hypoxia (CIH) and chronic sleep fragmentation (CSF) are two cardinal pathological features of obstructive sleep apnea (OSA). Dietary obesity is a crucial risk intermediator for OSA and metabolic disorders. Gut microbiota affect hepatic and adipose tissue morphology under conditions of CIH or CSF through downstream metabolites. However, the exact relationship is unclear. Herein, chow and high-fat diet (HFD)-fed mice were subjected to CIH or CSF for 10 weeks each and compared to normoxia (NM) or normal sleep (NS) controls. 16S rRNA amplicon sequencing, untargeted liquid chromatography-tandem mass spectrometry, and histological assessment of liver and adipose tissues were used to investigate the correlations between the microbiome, metabolome, and lipid metabolism under CIH or CSF condition. Our results demonstrated that CIH and CSF regulate the abundance of intestinal microbes (such as Akkermansia mucinphila, Clostridium spp., Lactococcus spp., and Bifidobacterium spp.) and functional metabolites, such as tryptophan, free fatty acids, branched amino acids, and bile acids, which influence adipose tissue and hepatic lipid metabolism, and the level of lipid deposition in tissues and peripheral blood. In conclusion, CIH and CSF adversely affect fecal microbiota composition and function, and host metabolism; these findings provide new insight into the independent and synergistic effects of CIH, CSF, and HFD on lipid disorders.
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Affiliation(s)
- Fan Wang
- Department of Otolaryngology-Head and Neck Surgery and Shanghai Key Laboratory of Sleep Disordered Breathing and Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Juanjuan Zou
- Department of Otorhinolaryngology and National Health Commission (NHC) Key Laboratory of Otorhinolaryngology, Shandong University Affiliated Qilu Hospital, Jinan, China
| | - Huajun Xu
- Department of Otolaryngology-Head and Neck Surgery and Shanghai Key Laboratory of Sleep Disordered Breathing and Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
- *Correspondence: Huajun Xu, ; Jian Guan, ; Shankai Yin,
| | - Weijun Huang
- Department of Otolaryngology-Head and Neck Surgery and Shanghai Key Laboratory of Sleep Disordered Breathing and Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Xiaoman Zhang
- Department of Otolaryngology-Head and Neck Surgery and Shanghai Key Laboratory of Sleep Disordered Breathing and Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Zhicheng Wei
- Department of Otolaryngology-Head and Neck Surgery and Shanghai Key Laboratory of Sleep Disordered Breathing and Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Xinyi Li
- Department of Otolaryngology-Head and Neck Surgery and Shanghai Key Laboratory of Sleep Disordered Breathing and Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Yupu Liu
- Department of Otolaryngology-Head and Neck Surgery and Shanghai Key Laboratory of Sleep Disordered Breathing and Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Jianyin Zou
- Department of Otolaryngology-Head and Neck Surgery and Shanghai Key Laboratory of Sleep Disordered Breathing and Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Feng Liu
- Department of Otolaryngology-Head and Neck Surgery and Shanghai Key Laboratory of Sleep Disordered Breathing and Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Huaming Zhu
- Department of Otolaryngology-Head and Neck Surgery and Shanghai Key Laboratory of Sleep Disordered Breathing and Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Hongliang Yi
- Department of Otolaryngology-Head and Neck Surgery and Shanghai Key Laboratory of Sleep Disordered Breathing and Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Jian Guan
- Department of Otolaryngology-Head and Neck Surgery and Shanghai Key Laboratory of Sleep Disordered Breathing and Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
- *Correspondence: Huajun Xu, ; Jian Guan, ; Shankai Yin,
| | - Shankai Yin
- Department of Otolaryngology-Head and Neck Surgery and Shanghai Key Laboratory of Sleep Disordered Breathing and Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
- *Correspondence: Huajun Xu, ; Jian Guan, ; Shankai Yin,
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Li J, Gong L, Xu Q. Purinergic 2X7 receptor is involved in adipogenesis and lipid degradation. Exp Ther Med 2021; 23:81. [PMID: 34934450 PMCID: PMC8652400 DOI: 10.3892/etm.2021.11004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 07/20/2021] [Indexed: 12/03/2022] Open
Abstract
Obesity and dyslipidemia are two metabolic syndrome disorders that have serious effects on the health of patients. Purinergic 2X receptor ligand-gated ion channel 7 (P2X7R) has been reported to play a role in regulating lipid storage and metabolism. However, the role and potential mechanism of P2X7R in adipogenesis and lipid degradation remain unknown. In the present study, a mouse model of obesity was established by feeding mice a high-fat diet, and the 3T3-L1 cell line was used to analyze the function of P2X7R in vitro. Reverse transcription-quantitative PCR and western blot analyses were performed to detect the expression levels of P2X7R, sterol regulatory element-binding protein 1 (SREBP1) and other associated transcription factors. Bioinformatics analysis was used to predict the potential target gene of P2X7R and a dual luciferase reporter assay was used to confirm this prediction. Oil Red O staining was used to evaluate the adipogenic capacity of preadipocytes. AdipoRed assay, cholesterol assay and a free glycerol reagent were used to measure the expression levels of triglyceride (TGs), total cholesterol (TC) and glycerin, respectively. The results indicated that P2X7R was highly expressed in obese mice and that it was involved in adipogenic differentiation in vitro. SREBP1 enhanced the transcription activities of P2X7R to promote its expression. Inhibition of P2X7R significantly reduced the adipogenic capacity of preadipocytes, decreased the expression levels of adipogenesis-associated transcription factors (peroxisome proliferator-activated receptor γ, CCAAT-enhancer-binding protein α and fatty-acid-binding protein 4), enhanced the expression levels of lipolytic enzymes (adipose triglyceride lipase, phosphorylated hormone-sensitive lipase and monoacylglycerol lipase) and regulated the expression of TG, TC and glycerin in mature 3T3-L1 cells. These effects were reversed by a small interfering RNA targeting Wnt3a. Therefore, the results suggested that P2X7R, the transcription activities of which were regulated by SREBP1, regulated adipogenesis and lipid degradation by targeting SREBP1, indicating its potential effects on obesity-associated metabolism.
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Affiliation(s)
- Jing Li
- Pediatric Department, Yancheng Third People's Hospital, Yancheng School of Clinical Medicine of Nanjing Medical University, Yancheng, Jiangsu 224000, P.R. China
| | - Linxia Gong
- Pediatric Department, Nanjing Integrated Traditional Chinese and Western Medicine Hospital, Nanjing, Jiangsu 210024, P.R. China
| | - Qiaolan Xu
- Pediatric Department, Yancheng Third People's Hospital, Yancheng School of Clinical Medicine of Nanjing Medical University, Yancheng, Jiangsu 224000, P.R. China
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30
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Serdan TDA, Masi LN, Pereira JNB, Rodrigues LE, Alecrim AL, Scervino MVM, Diniz VLS, Dos Santos AAC, Filho CPBS, Alba-Loureiro TC, Marzuca-Nassr GN, Bazotte RB, Gorjão R, Pithon-Curi TC, Curi R, Hirabara SM. Impaired brown adipose tissue is differentially modulated in insulin-resistant obese wistar and type 2 diabetic Goto-Kakizaki rats. Biomed Pharmacother 2021; 142:112019. [PMID: 34403962 DOI: 10.1016/j.biopha.2021.112019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 07/29/2021] [Accepted: 08/07/2021] [Indexed: 12/13/2022] Open
Abstract
Brown adipose tissue (BAT) is a potential target to treat obesity and diabetes, dissipating energy as heat. Type 2 diabetes (T2D) has been associated with obesogenic diets; however, T2D was also reported in lean individuals to be associated with genetic factors. We aimed to investigate the differences between obese and lean models of insulin resistance (IR) and elucidate the mechanism associated with BAT metabolism and dysfunction in different IR animal models: a genetic model (lean GK rats) and obese models (diet-induced obese Wistar rats) at 8 weeks of age fed a high-carbohydrate (HC), high-fat (HF) diet, or high-fat and high-sugar (HFHS) diet for 8 weeks. At 15 weeks of age, BAT glucose uptake was evaluated by 18F-FDG PET under basal (saline administration) or stimulated condition (CL316,243, a selective β3-AR agonist). After CL316, 243 administrations, GK animals showed decreased glucose uptake compared to HC animals. At 16 weeks of age, the animals were euthanized, and the interscapular BAT was dissected for analysis. Histological analyses showed lower cell density in GK rats and higher adipocyte area compared to all groups, followed by HFHS and HF compared to HC. HFHS showed a decreased batokine FGF21 protein level compared to all groups. However, GK animals showed increased expression of genes involved in fatty acid oxidation (CPT1 and CPT2), BAT metabolism (Sirt1 and Pgc1-α), and obesogenic genes (leptin and PAI-1) but decreased gene expression of glucose transporter 1 (GLUT-1) compared to other groups. Our data suggest impaired BAT function in obese Wistar and GK rats, with evidence of a whitening process in these animals.
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Affiliation(s)
| | - Laureane Nunes Masi
- Interdisciplinary Postgraduate Program in Health Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | | | - Luiz Eduardo Rodrigues
- Interdisciplinary Postgraduate Program in Health Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Amanda Lins Alecrim
- Interdisciplinary Postgraduate Program in Health Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | | | | | | | | | | | | | | | - Renata Gorjão
- Interdisciplinary Postgraduate Program in Health Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Tania Cristina Pithon-Curi
- Interdisciplinary Postgraduate Program in Health Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Rui Curi
- Interdisciplinary Postgraduate Program in Health Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Sandro Massao Hirabara
- Interdisciplinary Postgraduate Program in Health Sciences, Cruzeiro do Sul University, São Paulo, Brazil
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31
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Choi RY, Lee MK. Polygonum multiflorum Thunb. Hot Water Extract Reverses High-Fat Diet-Induced Lipid Metabolism of White and Brown Adipose Tissues in Obese Mice. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10081509. [PMID: 34451554 PMCID: PMC8398201 DOI: 10.3390/plants10081509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 07/11/2021] [Accepted: 07/21/2021] [Indexed: 05/06/2023]
Abstract
The purpose of the present study was to determine whether an anti-obesity effect of a Polygonum multiflorum Thunb. hot water extract (PW) was involved in the lipid metabolism of white adipose tissue (WAT) and brown adipose tissue (BAT) in high-fat diet (HFD)-induced C57BL/6N obese mice. Mice freely received a normal diet (NCD) or an HFD for 12 weeks; HFD-fed mice were orally given PW (100 or 300 mg/kg) or garcinia cambogia (GC, 200 mg/kg) once a day. After 12 weeks, PW (300 mg/kg) or GC significantly alleviated adiposity by reducing body weight, WAT weights, and food efficiency ratio. PW (300 mg/kg) improved hyperinsulinemia and enhanced insulin sensitivity. In addition, PW (300 mg/kg) significantly down-regulated expression of carbohydrate-responsive element-binding protein (ChREBP) and diacylglycerol O-acyltransferase 2 (DGAT2) genes in WAT compared with the untreated HFD group. HFD increased BAT gene levels such as adrenoceptor beta 3 (ADRB3), peroxisome proliferator-activated receptor γ (PPARγ), hormone-sensitive lipase (HSL), cluster of differentiation 36 (CD36), fatty acid-binding protein 4 (FABP4), PPARγ coactivator 1-α (PGC-1α), PPARα, and carnitine palmitoyltransferase 1B (CPT1B) compared with the NCD group; however, PW or GC effectively reversed those levels. These findings suggest that the anti-obesity activity of PW was mediated via suppression of lipogenesis in WAT, leading to the normalization of lipid metabolism in BAT.
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Affiliation(s)
- Ra-Yeong Choi
- Department of Agricultural Biology, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Korea;
| | - Mi-Kyung Lee
- Department of Food and Nutrition, Sunchon National University, Suncheon 57922, Korea
- Correspondence: ; Tel.: +82-61-750-3656; Fax: +82-61-750-3650
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32
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Schlezinger JJ, Hyötyläinen T, Sinioja T, Boston C, Puckett H, Oliver J, Heiger-Bernays W, Webster TF. Perfluorooctanoic acid induces liver and serum dyslipidemia in humanized PPARα mice fed an American diet. Toxicol Appl Pharmacol 2021; 426:115644. [PMID: 34252412 DOI: 10.1016/j.taap.2021.115644] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2021] [Revised: 07/06/2021] [Accepted: 07/07/2021] [Indexed: 01/06/2023]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are pervasive in the environment resulting in nearly universal detection in people. Human serum PFAS concentrations are strongly associated with increased serum low-density lipoprotein cholesterol (LDL-C), and growing evidence suggests an association with serum triacylglycerides (TG). Here, we tested the hypothesis that perfluorooctanoic acid (PFOA) dysregulates liver and serum triacylglycerides in human peroxisome proliferator activated receptor α (hPPARα)-expressing mice fed an American diet. Mice were exposed to PFOA (3.5 mg/L) in drinking water for 6 weeks resulting in a serum concentration of 48 ± 9 μg/ml. In male and female hPPARα mice, PFOA increased total liver TG and TG substituted with saturated and monounsaturated fatty acids. Lack of expression of PPARα alone also increased total liver TG, and PFOA treatment had little effect on liver TG in PPARα null mice. In hPPARα mice, PFOA neither significantly increased nor decreased serum TG; however, there was a modest increase in TG associated with very low-density cholesterol particles in both sexes. Intriguingly, in female PPARα null mice, PFOA significantly increased serum TG, with a similar trend in males. PFOA also modified fatty acid and TG homeostasis-related gene expression in liver, in a hPPARα-dependent manner, but not in adipose. The results of our study and others reveal the importance of context (serum concentration and genotype) in determining the effect of PFOA on lipid homeostasis.
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Affiliation(s)
- J J Schlezinger
- Department of Environmental Health, Boston University School of Public Health, Boston, MA 02118, USA.
| | - T Hyötyläinen
- MTM Research Centre, School of Science and Technology, Örebro University, Örebro 702 81, Sweden
| | - T Sinioja
- MTM Research Centre, School of Science and Technology, Örebro University, Örebro 702 81, Sweden
| | - C Boston
- Department of Environmental Health, Boston University School of Public Health, Boston, MA 02118, USA
| | - H Puckett
- Department of Environmental Health, Boston University School of Public Health, Boston, MA 02118, USA
| | - J Oliver
- Department of Environmental Health, Boston University School of Public Health, Boston, MA 02118, USA
| | - W Heiger-Bernays
- Department of Environmental Health, Boston University School of Public Health, Boston, MA 02118, USA
| | - T F Webster
- Department of Environmental Health, Boston University School of Public Health, Boston, MA 02118, USA
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33
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Jin H, Oh HJ, Kim J, Lee KP, Han X, Lee OH, Lee BY. Effects of Ecklonia stolonifera extract on the obesity and skeletal muscle regeneration in high-fat diet-fed mice. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104511] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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Fu P, Zhu R, Jia J, Hu Y, Wu C, Cieszczyk P, Holmberg HC, Gong L. Aerobic exercise promotes the functions of brown adipose tissue in obese mice via a mechanism involving COX2 in the VEGF signaling pathway. Nutr Metab (Lond) 2021; 18:56. [PMID: 34082784 PMCID: PMC8176720 DOI: 10.1186/s12986-021-00581-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 05/27/2021] [Indexed: 12/18/2022] Open
Abstract
Background High-fat diet (HFD)-induced obesity causes immune cells to infiltrate adipose tissue, leading to chronic inflammation and metabolic syndrome. Brown adipose tissue (BAT) can dissipate the energy produced by lipid oxidation as heat, thereby counteracting obesity. Aerobic exercise activates BAT, but the specific underlying mechanism is still unclear. Methods Male C57BL/6 J mice were divided into a normal diet control group (NC group) and HFD group (H group). After becoming obese, the animals in the H group were subdivided into a control group (HC group) and an exercise group (HE group, with treadmill training). After 4 weeks, the mRNA profile of BAT was determined, and then differentially expressed key genes and pathways were verified in vitro. Results Relative to the NC group, the genes upregulated in the HC group coded mainly for proteins involved in immune system progression and inflammatory and immune responses, while the downregulated genes regulated lipid metabolism and oxidation–reduction. Relative to the HC group, the genes upregulated in the HE group coded for glycolipid metabolism, while those that were downregulated were involved in cell death and apoptosis. VEGF and other signaling pathways were enhanced by aerobic exercise. Interaction analysis revealed that the gene encoding cyclooxygenase 2 (COX2) of the VEGF signaling pathway is central to this process, which was verified by a sympathetic activator (isoprenaline hydrochloride) and COX2 inhibitor (NS-398). Conclusions In mice with HFD-induced obesity, four weeks of aerobic exercise elevated BAT mass and increased the expression of genes related to glycolipid metabolism and anti-inflammatory processes. Several pathways are involved, with COX2 in the VEGF signaling pathway playing a key role.
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Affiliation(s)
- Pengyu Fu
- China Institute of Sport and Health Science, Beijing Sport University, Xinxi Road 48, Haidian District, Beijing, 100084, China.,Department of Physical Education, Northwestern Polytechnical University, West Youyi Road 127, Beilin District, Shaanxi, 710109, China
| | - Rongxin Zhu
- China Institute of Sport and Health Science, Beijing Sport University, Xinxi Road 48, Haidian District, Beijing, 100084, China.,Shanghai Research Institute of Sports Science, Xuhui District, Wuxing Road 87, Shanghai, 200030, China
| | - Jie Jia
- China Institute of Sport and Health Science, Beijing Sport University, Xinxi Road 48, Haidian District, Beijing, 100084, China.,Sport Science College, Beijing Sport University, Xinxi Road 48, Haidian District, Beijing, 100084, China
| | - Yang Hu
- China Institute of Sport and Health Science, Beijing Sport University, Xinxi Road 48, Haidian District, Beijing, 100084, China
| | - Chengjun Wu
- School of Biomedical Engineering, Dalian University of Technology and IC Technology Key Lab of Liaoning, Dalian, 116024, China
| | - Pawel Cieszczyk
- Department of Molecular Biology, Faculty of Physical Education, Gdańsk University of Physical Education and Sport, ul. Kazimierza Górskiego 1, 80-336, Gdańsk, Poland
| | - Hans-Christer Holmberg
- Department of Physiology and Pharmacology, Biomedicum C5, Karolinska Institute, Stockholm, Sweden
| | - Lijing Gong
- China Institute of Sport and Health Science, Beijing Sport University, Xinxi Road 48, Haidian District, Beijing, 100084, China.
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Protective Effect of Cudrania tricuspidata Extract against High-Fat Diet Induced Nonalcoholic Fatty Liver Disease through Nrf-2/HO-1 Pathway. Molecules 2021; 26:molecules26092434. [PMID: 33922045 PMCID: PMC8122508 DOI: 10.3390/molecules26092434] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/19/2021] [Accepted: 04/20/2021] [Indexed: 12/13/2022] Open
Abstract
Nonalcoholic fatty liver disease is the most common chronic disease affecting a wide range of the world’s population and associated with obesity-induced metabolic syndrome. It is possibly emerging as a leading cause of life-threatening liver diseases for which a drug with a specific therapeutic target has not been developed yet. Previously, there have been reports on the benefits of Cudrania tricuspidata (CT) for treating obesity and diabetes via regulation of metabolic processes, such as lipogenesis, lipolysis, and inflammation. In this study, we investigated the ameliorative effect of orally administered 0.25% and 0.5% (w/w) CT mixed with high-fat diet (HFD) to C57BL/6J mice for 7 weeks. It was found that body weight, fat mass, hepatic mass, serum glucose level, and liver cholesterol levels were significantly reduced after CT treatment. In CT-treated HFD-fed mice, the mRNA expression levels of hepatic lipogenic and inflammatory cytokine-related genes were markedly reduced, whereas the expression level of epididymal lipogenic genes was increased. The mRNA expression level of beta-oxidation and Nrf-2/HO-1 genes significantly increased in CT-treated obese mice livers. We propose that CT alleviates hepatic steatosis by reducing oxidative stress and inflammation.
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Barrios V, Frago LM, Canelles S, Guerra-Cantera S, Arilla-Ferreiro E, Chowen JA, Argente J. Leptin Modulates the Response of Brown Adipose Tissue to Negative Energy Balance: Implication of the GH/IGF-I Axis. Int J Mol Sci 2021; 22:2827. [PMID: 33799501 PMCID: PMC8001882 DOI: 10.3390/ijms22062827] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 02/26/2021] [Accepted: 03/09/2021] [Indexed: 01/09/2023] Open
Abstract
The growth hormone (GH)/insulin-like growth factor I (IGF-I) axis is involved in metabolic control. Malnutrition reduces IGF-I and modifies the thermogenic capacity of brown adipose tissue (BAT). Leptin has effects on the GH/IGF-I axis and the function of BAT, but its interaction with IGF-I and the mechanisms involved in the regulation of thermogenesis remains unknown. We studied the GH/IGF-I axis and activation of IGF-I-related signaling and metabolism related to BAT thermogenesis in chronic central leptin infused (L), pair-fed (PF), and control rats. Hypothalamic somatostatin mRNA levels were increased in PF and decreased in L, while pituitary GH mRNA was reduced in PF. Serum GH and IGF-I concentrations were decreased only in PF. In BAT, the association between suppressor of cytokine signaling 3 and the IGF-I receptor was reduced, and phosphorylation of the IGF-I receptor increased in the L group. Phosphorylation of Akt and cyclic AMP response element binding protein and glucose transporter 4 mRNA levels were increased in L and mRNA levels of uncoupling protein-1 (UCP-1) and enzymes involved in lipid anabolism reduced in PF. These results suggest that modifications in UCP-1 in BAT and changes in the GH/IGF-I axis induced by negative energy balance are dependent upon leptin levels.
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Affiliation(s)
- Vicente Barrios
- Department of Endocrinology, Instituto de Investigación La Princesa, Hospital Infantil Universitario Niño Jesús, E-28009 Madrid, Spain; (L.M.F.); (S.C.); (S.G.-C.); (J.A.C.)
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029 Madrid, Spain
| | - Laura M. Frago
- Department of Endocrinology, Instituto de Investigación La Princesa, Hospital Infantil Universitario Niño Jesús, E-28009 Madrid, Spain; (L.M.F.); (S.C.); (S.G.-C.); (J.A.C.)
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029 Madrid, Spain
- Department of Pediatrics, Faculty of Medicine, Universidad Autónoma de Madrid, E-28029 Madrid, Spain
| | - Sandra Canelles
- Department of Endocrinology, Instituto de Investigación La Princesa, Hospital Infantil Universitario Niño Jesús, E-28009 Madrid, Spain; (L.M.F.); (S.C.); (S.G.-C.); (J.A.C.)
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029 Madrid, Spain
| | - Santiago Guerra-Cantera
- Department of Endocrinology, Instituto de Investigación La Princesa, Hospital Infantil Universitario Niño Jesús, E-28009 Madrid, Spain; (L.M.F.); (S.C.); (S.G.-C.); (J.A.C.)
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029 Madrid, Spain
- Department of Pediatrics, Faculty of Medicine, Universidad Autónoma de Madrid, E-28029 Madrid, Spain
| | - Eduardo Arilla-Ferreiro
- Department of Biological Systems, Faculty of Medicine, Universidad de Alcalá, E-28871 Alcalá de Henares, Spain;
| | - Julie A. Chowen
- Department of Endocrinology, Instituto de Investigación La Princesa, Hospital Infantil Universitario Niño Jesús, E-28009 Madrid, Spain; (L.M.F.); (S.C.); (S.G.-C.); (J.A.C.)
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029 Madrid, Spain
- CEI UAM + CSIC, IMDEA Food Institute, E-28049 Madrid, Spain
| | - Jesús Argente
- Department of Endocrinology, Instituto de Investigación La Princesa, Hospital Infantil Universitario Niño Jesús, E-28009 Madrid, Spain; (L.M.F.); (S.C.); (S.G.-C.); (J.A.C.)
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029 Madrid, Spain
- Department of Pediatrics, Faculty of Medicine, Universidad Autónoma de Madrid, E-28029 Madrid, Spain
- CEI UAM + CSIC, IMDEA Food Institute, E-28049 Madrid, Spain
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37
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Yue H, Liu W, Zhang W, Jia M, Huang F, Du F, Xu T. Dietary low ratio of n-6/n-3 polyunsaturated fatty acids improve type 2 diabetes mellitus via activating brown adipose tissue in male mice. J Food Sci 2021; 86:1058-1065. [PMID: 33590526 DOI: 10.1111/1750-3841.15645] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 12/30/2020] [Accepted: 01/19/2021] [Indexed: 12/20/2022]
Abstract
The ratio n-6/n-3 polyunsaturated fatty acids (PUFA) has been caused widespread discussion. However, the best ratio and mechanism of n-6/n-3 PUFA in type 2 diabetes mellitus (T2DM) are largely unknown. This study investigated the effects of different ratio of n-6/n-3 PUFA diets on brown adipose tissue (BAT) and T2DM in mice. Results showed that compared with high ratio of n-6/n-3 PUFA (50:1) diet, lower ratio of n-6/n-3 PUFA (1:1 and 5:1) diets significantly increased BAT mass by 67.55% and 60.49%, decreased the fasting blood glucose (24.87% and 20.64%), total cholesterol (32.9% and 23.84%), triglyceride (33.51% and 29.62%), low-density lipoprotein cholesterol (19.23% and 17.38%), and increased glucose tolerance by 21.99% and 15.52%. Further, qRT-PCR analyses indicated that lower ratio of n-6/n-3 PUFA diets activated BAT, increased the expression of Ucp1, β-3AR, PPAR-γ, cAMP, GLU1, HSL, LPL, and PGC-1α, further improved lipid and glucose metabolism in T2DM mice. In conclusion, this study substantiated that the lower ratio of n-6/n-3 PUFA (1:1 and 5:1) improve symptoms associated with T2DM via activating BAT. PRACTICAL APPLICATION: Dietary ratio of n-6/n-3 polyunsaturated fatty acids is essential for the improvement of chronic diseases. Our current study showed that 1:1 or 5:1 ratio of n-6/n-3 polyunsaturated fatty acids had better efficiency for type 2 diabetes mellitus via activating brown adipose tissue when compared with 1:50. This finding provided useful guidance for the daily diet of patients with diabetes.
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Affiliation(s)
- Hao Yue
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences/Shandong Engineering Research Center of Food for Special Medical Purpose/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs, Jinan, China
| | - Wei Liu
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences/Shandong Engineering Research Center of Food for Special Medical Purpose/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs, Jinan, China
| | - Wenlong Zhang
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences/Shandong Engineering Research Center of Food for Special Medical Purpose/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs, Jinan, China
| | - Min Jia
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences/Shandong Engineering Research Center of Food for Special Medical Purpose/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs, Jinan, China
| | - Fenghong Huang
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences/Shandong Engineering Research Center of Food for Special Medical Purpose/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs, Jinan, China
| | - Fangling Du
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences/Shandong Engineering Research Center of Food for Special Medical Purpose/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs, Jinan, China
| | - Tongcheng Xu
- Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences/Shandong Engineering Research Center of Food for Special Medical Purpose/Key Laboratory of Agro-Products Processing Technology of Shandong Province/Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture and Rural Affairs, Jinan, China
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38
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Cao Y, Liu X, Zhao J, Du M. AMPKα1 regulates Idh2 transcription through H2B O-GlcNAcylation during brown adipogenesis. Acta Biochim Biophys Sin (Shanghai) 2021; 53:112-118. [PMID: 33219380 DOI: 10.1093/abbs/gmaa136] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Indexed: 12/19/2022] Open
Abstract
AMP-activated protein kinase (AMPK) is indispensable for the development and maintenance of brown adipose tissue (BAT), and its activity is inhibited due to obesity. The isocitrate dehydrogenase 2 (IDH2) is a mitochondrial enzyme responsible for the production of α-ketoglutarate, a key intermediate metabolite integrating multiple metabolic processes. We previously found that AMPKα1 ablation reduced cellular α-ketoglutarate concentration during brown adipocyte differentiation, but the effect of AMPKα1 on Idh2 expression remains undefined. In the present study, mouse C3H10T1/2 cells were transfected with Idh2-CRISPR/Cas9, and induced to brown adipogenesis. Our data suggested that brown adipogenesis was compromised due to IDH2 deficiency in vitro, which was accompanied by down-regulation of PR-domain containing 16. Importantly, the IDH2 content was reduced in brown stromal vascular cells (BSVs) separated from AMPKα1 knockout (KO) BAT, which was associated with lower contents of histone 2B (H2B) O-GlcNAcylation and monoubiquitination. Furthermore, both GlcNAcylated-H2B (S112) and ubiquityl-histone 2B (K120) contents in the Idh2 promoter were decreased in AMPKα1 KO BSVs. Meanwhile, ectopic O-linked N-acetylglucosamine transferase (OGT) expression was positively correlated with Idh2 expression, while OGT (T444A) mutation abolished the regulatory effect of AMPKα1 on Idh2. In vivo, reduced AMPKα1 activity and lower IDH2 abundance were observed in BAT of obese mice when compared with those in control mice. Taken together, our data demonstrated that IDH2 is necessary for brown adipogenesis and that AMPKα1 deficiency attenuates Idh2 expression, which might be by suppressing H2B O-GlcNAcylation modification.
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Affiliation(s)
- Yuxin Cao
- Department of Animal Sciences and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
| | - Xiangdong Liu
- Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA
| | - Junxing Zhao
- Department of Animal Sciences and Veterinary Medicine, Shanxi Agricultural University, Taigu 030801, China
| | - Min Du
- Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA
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Norman-Burgdolf H, Li D, Sullivan P, Wang S. CD47 differentially regulates white and brown fat function. Biol Open 2020; 9:bio056747. [PMID: 33328190 PMCID: PMC7758621 DOI: 10.1242/bio.056747] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 11/19/2020] [Indexed: 01/18/2023] Open
Abstract
Mechanisms that enhance energy expenditure are attractive therapeutic targets for obesity. Previously we have demonstrated that mice lacking cd47 are leaner, exhibit increased energy expenditure, and are protected against diet-induced obesity. In this study, we further defined the physiological role of cd47 deficiency in regulating mitochondrial function and energy expenditure in both white and brown adipose tissue. We observed that cd47 deficient mice (under normal chow diet) had comparable amount of white fat mass but reduced white adipocyte size as compared to wild-type mice. Subsequent ex vivo and in vitro studies suggest enhanced lipolysis, and not impaired lipogenesis or energy utilization, contributes to this phenotype. In contrast to white adipose tissue, there were no obvious morphological differences in brown adipose tissue between wild-type and knockout mice. However, mitochondria isolated from brown fat of cd47 deficient mice had significantly higher rates of free fatty acid-mediated uncoupling. This suggests that enhanced fuel availability via white adipose tissue lipolysis may perpetuate elevated brown adipose tissue energy expenditure and contributes to the lean phenotype observed in cd47 deficient mice.
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Affiliation(s)
- Heather Norman-Burgdolf
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40536, USA
- Department of Dietetics and Human Nutrition, University of Kentucky, Lexington, KY 40536, USA
| | - Dong Li
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40536, USA
- Department of Research and Development, Lexington VA Medical Center, Lexington KY 40502, USA
| | - Patrick Sullivan
- Department of Neuroscience, University of Kentucky, Lexington, KY 40536, USA
- Department of Research and Development, Lexington VA Medical Center, Lexington KY 40502, USA
| | - Shuxia Wang
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40536, USA
- Department of Research and Development, Lexington VA Medical Center, Lexington KY 40502, USA
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40
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Negron SG, Ercan-Sencicek AG, Freed J, Walters M, Lin Z. Both proliferation and lipogenesis of brown adipocytes contribute to postnatal brown adipose tissue growth in mice. Sci Rep 2020; 10:20335. [PMID: 33230135 PMCID: PMC7683731 DOI: 10.1038/s41598-020-77362-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 10/26/2020] [Indexed: 02/03/2023] Open
Abstract
Brown adipose tissue (BAT) is the primary non-shivering thermogenesis organ in mammals, which plays essential roles in maintaining the body temperature of infants. Although the development of BAT during embryogenesis has been well addressed in rodents, how BAT grows after birth remains unknown. Using mouse interscapular BAT (iBAT) as an example, we studied the cellular and molecular mechanisms that regulate postnatal BAT growth. By analyzing the developmental dynamics of brown adipocytes (BAs), we found that BAs size enlargement partially accounts for iBAT growth. By investigating the BAs cell cycle activities, we confirmed the presence of proliferative BAs in the neonatal mice. Two weeks after birth, most of the BAs exit cell cycle, and the further expansion of the BAT was mainly due to lipogenesis-mediated BAs volume increase. Microscopy and fluorescence-activated cell sorting analyses suggest that most BAs are mononuclear and diploid. Based on the developmental dynamics of brown adipocytes, we propose that the murine iBAT has two different growth phases between birth and weaning: increase of BAs size and number in the first two weeks, and BAs size enlargement thereafter. In summary, our data demonstrate that both lipogenesis and proliferation of BAs contribute to postnatal iBAT growth in mice.
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Affiliation(s)
- Steven G Negron
- Masonic Medical Research Institute, 2150 Bleecker Street, Utica, NY, 13501, USA
| | - A Gulhan Ercan-Sencicek
- Masonic Medical Research Institute, 2150 Bleecker Street, Utica, NY, 13501, USA
- Department of Neurosurgery, Program On Neurogenetics, Yale School of Medicine, Yale University, New Haven, CT, USA
| | - Jessica Freed
- Masonic Medical Research Institute, 2150 Bleecker Street, Utica, NY, 13501, USA
| | - Madeline Walters
- Masonic Medical Research Institute, 2150 Bleecker Street, Utica, NY, 13501, USA
| | - Zhiqiang Lin
- Masonic Medical Research Institute, 2150 Bleecker Street, Utica, NY, 13501, USA.
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41
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Bastías-Pérez M, Serra D, Herrero L. Dietary Options for Rodents in the Study of Obesity. Nutrients 2020; 12:nu12113234. [PMID: 33105762 PMCID: PMC7690621 DOI: 10.3390/nu12113234] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 10/05/2020] [Accepted: 10/16/2020] [Indexed: 12/14/2022] Open
Abstract
Obesity and its associated metabolic diseases are currently a priority research area. The increase in global prevalence at different ages is having an enormous economic and health impact. Genetic and environmental factors play a crucial role in the development of obesity, and diet is one of the main factors that contributes directly to the obesogenic phenotype. Scientific evidence has shown that increased fat intake is associated with the increase in body weight that triggers obesity. Rodent animal models have been extremely useful in the study of obesity since weight gain can easily be induced with a high-fat diet. Here, we review the dietary patterns and physiological mechanisms involved in the dynamics of energy balance. We report the main dietary options for the study of obesity and the variables to consider in the use of a high-fat diet, and assess the progression of obesity and diet-induced thermogenesis.
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Affiliation(s)
- Marianela Bastías-Pérez
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona, E-08028 Barcelona, Spain; (M.B.-P.); (D.S.)
| | - Dolors Serra
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona, E-08028 Barcelona, Spain; (M.B.-P.); (D.S.)
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029 Madrid, Spain
| | - Laura Herrero
- Department of Biochemistry and Physiology, School of Pharmacy and Food Sciences, Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona, E-08028 Barcelona, Spain; (M.B.-P.); (D.S.)
- Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III, E-28029 Madrid, Spain
- Correspondence:
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42
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Silvestri E, Senese R, De Matteis R, Cioffi F, Moreno M, Lanni A, Gentile A, Busiello RA, Salzano AM, Scaloni A, de Lange P, Goglia F, Lombardi A. Absence of uncoupling protein 3 at thermoneutrality influences brown adipose tissue mitochondrial functionality in mice. FASEB J 2020; 34:15146-15163. [PMID: 32946628 DOI: 10.1096/fj.202000995r] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 07/31/2020] [Accepted: 09/01/2020] [Indexed: 02/06/2023]
Abstract
The physiological role played by uncoupling protein 3 (UCP3) in brown adipose tissue (BAT) has not been fully elucidated so far. In the present study, we evaluated the impact of the absence of UCP3 on BAT mitochondrial functionality and morphology. To this purpose, wild type (WT) and UCP3 Knockout (KO) female mice were housed at thermoneutrality (30°C), a condition in which BAT contributes to energy homeostasis independently of its cold-induced thermogenic function. BAT mitochondria from UCP3 KO mice presented a lower ability to oxidize the fatty acids and glycerol-3-phosphate, and an enhanced oxidative stress as revealed by enhanced mitochondrial electron leak, lipid hydroperoxide levels, and induction of antioxidant mitochondrial enzymatic capacity. The absence of UCP3 also influenced the mitochondrial super-molecular protein aggregation, an important feature for fatty acid oxidation rate as well as for adequate cristae organization and mitochondrial shape. Indeed, electron microscopy revealed alterations in mitochondrial morphology in brown adipocytes from KO mice. In the whole, data here reported show that the absence of UCP3 results in a significant alteration of BAT mitochondrial physiology and morphology. These observations could also help to clarify some aspects of the association between metabolic disorders associated with low UCP3 levels, as previously reported in human studies.
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Affiliation(s)
- Elena Silvestri
- Department of Science and Technology, University of Sannio, Benevento, Italy
| | - Rosalba Senese
- Department of Environmental, Biological, and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Caserta, Italy
| | - Rita De Matteis
- Department of Biomolecular Sciences, University of Urbino "Carlo Bo", Urbino, Italy
| | - Federica Cioffi
- Department of Science and Technology, University of Sannio, Benevento, Italy
| | - Maria Moreno
- Department of Science and Technology, University of Sannio, Benevento, Italy
| | - Antonia Lanni
- Department of Environmental, Biological, and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Caserta, Italy
| | | | | | - Anna Maria Salzano
- Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, Naples, Italy
| | - Andrea Scaloni
- Proteomics & Mass Spectrometry Laboratory, ISPAAM, National Research Council, Naples, Italy
| | - Pieter de Lange
- Department of Environmental, Biological, and Pharmaceutical Sciences and Technologies, University of Campania "Luigi Vanvitelli", Caserta, Italy
| | - Fernando Goglia
- Department of Science and Technology, University of Sannio, Benevento, Italy
| | - Assunta Lombardi
- Department of Biology, University of Naples Federico II, Naples, Italy
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43
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Liu H, Luo J, Guillory B, Chen JA, Zang P, Yoeli JK, Hernandez Y, Lee IIG, Anderson B, Storie M, Tewnion A, Garcia JM. Ghrelin ameliorates tumor-induced adipose tissue atrophy and inflammation via Ghrelin receptor-dependent and -independent pathways. Oncotarget 2020; 11:3286-3302. [PMID: 32934774 PMCID: PMC7476735 DOI: 10.18632/oncotarget.27705] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 07/21/2020] [Indexed: 12/13/2022] Open
Abstract
Adipose tissue (AT) atrophy is a hallmark of cancer cachexia contributing to increased morbidity/mortality. Ghrelin has been proposed as a treatment for cancer cachexia partly by preventing AT atrophy. However, the mechanisms mediating ghrelin's effects are incompletely understood, including the extent to which its only known receptor, GHSR-1a, is required for these effects. This study characterizes the pathways involved in AT atrophy in the Lewis Lung Carcinoma (LLC)-induced cachexia model and those mediating the effects of ghrelin in Ghsr +/+ and Ghsr -/- mice. We show that LLC causes AT atrophy by inducing anorexia, and increasing lipolysis, AT inflammation, thermogenesis and energy expenditure. These changes were greater in Ghsr -/-. Ghrelin administration prevented LLC-induced anorexia only in Ghsr +/+, but prevented WAT lipolysis, inflammation and atrophy in both genotypes, although its effects were greater in Ghsr +/+. LLC-induced increases in BAT inflammation, WAT and BAT thermogenesis, and energy expenditure were not affected by ghrelin. In conclusion, ghrelin ameliorates WAT inflammation, fat atrophy and anorexia in LLC-induced cachexia. GHSR-1a is required for ghrelin's orexigenic effect but not for its anti-inflammatory or fat-sparing effects.
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Affiliation(s)
- Haiming Liu
- Geriatric Research, Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA.,Gerontology and Geriatric Medicine, University of Washington Department of Medicine, Seattle, WA, USA.,These authors contributed equally to this work
| | - Jiaohua Luo
- Division of Endocrinology, Diabetes and Metabolism, MCL, Center for Translational Research on Inflammatory Diseases, Michael E. DeBakey Veterans Affairs Medical Center, Department of Medicine, Baylor College of Medicine, Houston, TX, USA.,Department of Environmental Hygiene, College of Preventive Medicine, Army Medical University, Chongqing, China.,These authors contributed equally to this work
| | - Bobby Guillory
- Division of Endocrinology, Diabetes and Metabolism, MCL, Center for Translational Research on Inflammatory Diseases, Michael E. DeBakey Veterans Affairs Medical Center, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Ji-An Chen
- Division of Endocrinology, Diabetes and Metabolism, MCL, Center for Translational Research on Inflammatory Diseases, Michael E. DeBakey Veterans Affairs Medical Center, Department of Medicine, Baylor College of Medicine, Houston, TX, USA.,Department of Health Education, College of Preventive Medicine, Army Medical University, Chongqing, China
| | - Pu Zang
- Division of Endocrinology, Diabetes and Metabolism, MCL, Center for Translational Research on Inflammatory Diseases, Michael E. DeBakey Veterans Affairs Medical Center, Department of Medicine, Baylor College of Medicine, Houston, TX, USA.,Department of Endocrinology, Nanjing Jinling Hospital, Nanjing, China
| | - Jordan K Yoeli
- Division of Endocrinology, Diabetes and Metabolism, MCL, Center for Translational Research on Inflammatory Diseases, Michael E. DeBakey Veterans Affairs Medical Center, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Yamileth Hernandez
- Division of Endocrinology, Diabetes and Metabolism, MCL, Center for Translational Research on Inflammatory Diseases, Michael E. DeBakey Veterans Affairs Medical Center, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Ian In-Gi Lee
- Geriatric Research, Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA.,Gerontology and Geriatric Medicine, University of Washington Department of Medicine, Seattle, WA, USA
| | - Barbara Anderson
- Geriatric Research, Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA.,Gerontology and Geriatric Medicine, University of Washington Department of Medicine, Seattle, WA, USA
| | - Mackenzie Storie
- Geriatric Research, Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA.,Gerontology and Geriatric Medicine, University of Washington Department of Medicine, Seattle, WA, USA
| | - Alison Tewnion
- Geriatric Research, Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA
| | - Jose M Garcia
- Geriatric Research, Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, USA.,Gerontology and Geriatric Medicine, University of Washington Department of Medicine, Seattle, WA, USA.,Division of Endocrinology, Diabetes and Metabolism, MCL, Center for Translational Research on Inflammatory Diseases, Michael E. DeBakey Veterans Affairs Medical Center, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
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44
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Vinaik R, Barayan D, Jeschke MG. NLRP3 Inflammasome in Inflammation and Metabolism: Identifying Novel Roles in Postburn Adipose Dysfunction. Endocrinology 2020; 161:5868467. [PMID: 32790834 PMCID: PMC7426001 DOI: 10.1210/endocr/bqaa116] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 07/02/2020] [Indexed: 02/07/2023]
Abstract
Inflammasomes are multiprotein complexes that respond to pathogen or host associated damage markers, leading to caspase-1 maturation and processing of pro-inflammatory cytokines. Initially, inflammasomes were implicated primarily in inflammatory and infectious conditions. However, increasing evidence demonstrates broader roles beyond inflammation, including regulation of adipose tissue metabolism after burns. Here, we conducted a search for articles on PubMed, Web of Science, Embase, Scopus, and UpToDate with applied search strategies including a combination of "burns," "trauma," "(NLRP3) inflammasome," "metabolic conditions," "white adipose tissue," "macrophages," "browning," and "lipolysis" and included papers from 2000 to 2020. We discuss unexpected roles for NLRP3, the most characterized inflammasome to date, as a key metabolic driver in a variety of conditions. In particular, we highlight the function of NLRP3 inflammasome in burn trauma, which is characterized by both hyperinflammation and hypermetabolism. We identify a critical part for NLRP3 activation in macrophage dynamics and delineate a novel role in postburn white adipose tissue remodeling, a pathological response associated with hypermetabolism and poor clinical outcomes. Mechanistically, how inflammation and inflammasome activation is linked to postburn hypermetabolism is a novel concept to contemplate, and herein we provide evidence of an immunometabolic crosstalk between adipocytes and infiltrating macrophages.
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Affiliation(s)
| | | | - Marc G Jeschke
- Department of Surgery, Division of Plastic Surgery, University of Toronto, Canada
- Department of Immunology, University of Toronto, Canada
- Ross Tilley Burn Centre, Sunnybrook Health Sciences Centre, Toronto, Canada
- Sunnybrook Research Institute, Toronto, Canada
- Correspondence: Marc G. Jeschke, MD, PhD, Director Ross Tilley Burn Centre, Sunnybrook Health Sciences Centre; Division of Plastic Surgery, Department of Surgery, Department of Immunology, University of Toronto; Sunnybrook Research Institute, 2075 Bayview Ave., Rm. D704, Toronto, ON, CANADA, M4N 3M5. E-mail:
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45
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Zhou Z, Moore TM, Drew BG, Ribas V, Wanagat J, Civelek M, Segawa M, Wolf DM, Norheim F, Seldin MM, Strumwasser AR, Whitney KA, Lester E, Reddish BR, Vergnes L, Reue K, Rajbhandari P, Tontonoz P, Lee J, Mahata SK, Hewitt SC, Shirihai O, Gastonbury C, Small KS, Laakso M, Jensen J, Lee S, Drevon CA, Korach KS, Lusis AJ, Hevener AL. Estrogen receptor α controls metabolism in white and brown adipocytes by regulating Polg1 and mitochondrial remodeling. Sci Transl Med 2020; 12:eaax8096. [PMID: 32759275 PMCID: PMC8212422 DOI: 10.1126/scitranslmed.aax8096] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 11/04/2019] [Accepted: 07/16/2020] [Indexed: 12/14/2022]
Abstract
Obesity is heightened during aging, and although the estrogen receptor α (ERα) has been implicated in the prevention of obesity, its molecular actions in adipocytes remain inadequately understood. Here, we show that adipose tissue ESR1/Esr1 expression inversely associated with adiposity and positively associated with genes involved in mitochondrial metabolism and markers of metabolic health in 700 Finnish men and 100 strains of inbred mice from the UCLA Hybrid Mouse Diversity Panel. To determine the anti-obesity actions of ERα in fat, we selectively deleted Esr1 from white and brown adipocytes in mice. In white adipose tissue, Esr1 controlled oxidative metabolism by restraining the targeted elimination of mitochondria via the E3 ubiquitin ligase parkin. mtDNA content was elevated, and adipose tissue mass was reduced in adipose-selective parkin knockout mice. In brown fat centrally involved in body temperature maintenance, Esr1 was requisite for both mitochondrial remodeling by dynamin-related protein 1 (Drp1) and uncoupled respiration thermogenesis by uncoupled protein 1 (Ucp1). In both white and brown fat of female mice and adipocytes in culture, mitochondrial dysfunction in the context of Esr1 deletion was paralleled by a reduction in the expression of the mtDNA polymerase γ subunit Polg1 We identified Polg1 as an ERα target gene by showing that ERα binds the Polg1 promoter to control its expression in 3T3L1 adipocytes. These findings support strategies leveraging ERα action on mitochondrial function in adipocytes to combat obesity and metabolic dysfunction.
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Affiliation(s)
- Zhenqi Zhou
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Timothy M Moore
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Brian G Drew
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Vicent Ribas
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Jonathan Wanagat
- Division of Geriatrics, Department of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Mete Civelek
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Mayuko Segawa
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Dane M Wolf
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Frode Norheim
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Marcus M Seldin
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Alexander R Strumwasser
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Kate A Whitney
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Ellen Lester
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Britany R Reddish
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Laurent Vergnes
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Karen Reue
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Prashant Rajbhandari
- Department of Pathology and Laboratory Medicine and the Howard Hughes Research Institute, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Peter Tontonoz
- Department of Pathology and Laboratory Medicine and the Howard Hughes Research Institute, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Jason Lee
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Sushil K Mahata
- VA San Diego Healthcare System, San Diego, CA 92161, USA
- Department of Medicine, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Sylvia C Hewitt
- Receptor Biology Section, NIEHS, NIH, Research Triangle Park, NC 27709, USA
| | - Orian Shirihai
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Craig Gastonbury
- Department of Twin Research and Genetic Epidemiology, King's College London, London SE17EH, UK
| | - Kerrin S Small
- Department of Twin Research and Genetic Epidemiology, King's College London, London SE17EH, UK
| | - Markku Laakso
- Institute of Clinical Medicine, Internal Medicine, University of Eastern Finland and Kuopio University Hospital, Kuopio 70210, Finland
| | - Jorgen Jensen
- Department of Physical Performance, Norwegian School of Sport Science, Oslo 0806, Norway
| | - Sindre Lee
- University Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo 0316, Norway
| | - Christian A Drevon
- University Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo 0316, Norway
| | - Kenneth S Korach
- Receptor Biology Section, NIEHS, NIH, Research Triangle Park, NC 27709, USA
| | - Aldons J Lusis
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, CA 90095, USA
| | - Andrea L Hevener
- Division of Endocrinology, Diabetes and Hypertension, Department of Medicine, University of California, Los Angeles, CA 90095, USA.
- Iris Cantor-UCLA Women's Health Research Center, Los Angeles, CA 90095, USA
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The Gintonin-Enriched Fraction of Ginseng Regulates Lipid Metabolism and Browning via the cAMP-Protein Kinase a Signaling Pathway in Mice White Adipocytes. Biomolecules 2020; 10:biom10071048. [PMID: 32679738 PMCID: PMC7407952 DOI: 10.3390/biom10071048] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/05/2020] [Accepted: 07/13/2020] [Indexed: 12/20/2022] Open
Abstract
Obesity is a major health concern and is becoming an increasingly serious societal problem worldwide. The browning of white adipocytes has received considerable attention because of its potential protective effect against obesity-related metabolic disease. The gintonin-enriched fraction (GEF) is a non-saponin, glycolipoprotein component of ginseng that is known to have neuroprotective and anti-inflammatory effects. However, the anti-obesity and browning effects of GEF have not been explored to date. Therefore, we aimed to determine whether GEF has a preventive effect against obesity. We differentiated 3T3-L1 cells and mouse primary subcutaneous adipocytes for 8 days in the presence or absence of GEF, and then measured the expression of intermediates in signaling pathways that regulate triglyceride (TG) synthesis and browning by Western blotting and immunofluorescence analysis. We found that GEF reduced lipid accumulation by reducing the expression of pro-adipogenic and lipogenic factors, and increased lipolysis and thermogenesis, which may be mediated by an increase in the phosphorylation of protein kinase A. These findings suggest that GEF may induce fat metabolism and energy expenditure in white adipocytes and therefore may represent a potential treatment for obesity.
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Samuel O O. Review on multifaceted involvement of perivascular adipose tissue in vascular pathology. Cardiovasc Pathol 2020; 49:107259. [PMID: 32692664 DOI: 10.1016/j.carpath.2020.107259] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 06/27/2020] [Accepted: 06/27/2020] [Indexed: 12/16/2022] Open
Abstract
Perivascular adipose tissue (PVAT) is a fat tissue deposit that encircles the vasculature. PVAT is traditionally known to protect the vasculature from external stimuli that could cause biological stress. In addition to the protective role of PVAT, it secretes certain biologically active substances known as adipokines that induce paracrine effects on proximate blood vessels. These adipokines influence vascular tones. There are different types of PVAT and they are phenotypically and functionally distinct. These are the white and brown PVATs. Under certain conditions, white PVAT could undergo phenotypic switch to attain a brown PVAT-like phenotype. This type of PVAT is referred to as Beige PVAT. The morphology of adipose tissue is influenced by species, age, and sex. These factors play significant roles in adipose tissue mass, functionality, paracrine activity, and predisposition to vascular diseases. The difficulty that is currently experienced in extrapolating animal models to human physiology could be traceable to these factors. Up till now, the involvement of PVAT in the development of vascular pathology is still not well understood. Brown and white PVAT contribute differently to vascular pathology. Thus, the PVAT could be a therapeutic target in curbing certain vascular diseases. In this review, knowledge would be updated on the multifaceted involvement of PVAT in vascular pathology and also explore its vascular therapeutic potential.
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Affiliation(s)
- Olapoju Samuel O
- EA 7288, Biocommunication en Cardiometabolique (BC2M), Faculté de Pharmacie, Université de Montpellier, Montpellier, France.
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48
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Jin H, Lee K, Chei S, Oh HJ, Lee KP, Lee BY. Ecklonia stolonifera Extract Suppresses Lipid Accumulation by Promoting Lipolysis and Adipose Browning in High-Fat Diet-Induced Obese Male Mice. Cells 2020; 9:E871. [PMID: 32252474 PMCID: PMC7226821 DOI: 10.3390/cells9040871] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/21/2020] [Accepted: 02/21/2020] [Indexed: 12/18/2022] Open
Abstract
Obesity develops due to an energy imbalance and manifests as the storage of excess triglyceride (TG) in white adipose tissue (WAT). Recent studies have determined that edible natural materials can reduce lipid accumulation and promote browning in WAT. We aimed to determine whether Ecklonia stolonifera extract (ESE) would increase the energy expenditure in high-fat diet (HFD)-induced obese mice and 3T3-L1 cells by upregulating lipolysis and browning. ESE is an edible brown marine alga that belongs to the family Laminariaceae and contains dieckol, a phlorotannin. We report that ESE inhibits body mass gain by regulating the expression of proteins involved in adipogenesis and lipogenesis. In addition, ESE activates protein kinase A (PKA) and increases the expression of lipolytic enzymes including adipose triglyceride lipase (ATGL), phosphorylated hormone-sensitive lipase (p-HSL), and monoacylglycerol lipase (MGL) and also thermogenic genes, such as carnitine palmitoyltransferase 1 (CPT1), PR domain-containing 16 (PRDM16), and uncoupling protein 1 (UCP1). These findings indicate that ESE may represent a promising natural means of preventing obesity and obesity-related metabolic diseases.
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Affiliation(s)
- Heegu Jin
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Gyeonggi 13488, Korea; (H.J.); (K.L.); (S.C.); (H.-J.O.)
| | - Kippeum Lee
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Gyeonggi 13488, Korea; (H.J.); (K.L.); (S.C.); (H.-J.O.)
| | - Sungwoo Chei
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Gyeonggi 13488, Korea; (H.J.); (K.L.); (S.C.); (H.-J.O.)
| | - Hyun-Ji Oh
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Gyeonggi 13488, Korea; (H.J.); (K.L.); (S.C.); (H.-J.O.)
| | | | - Boo-Yong Lee
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Gyeonggi 13488, Korea; (H.J.); (K.L.); (S.C.); (H.-J.O.)
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49
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A high-fat diet enriched in medium chain triglycerides triggers hepatic thermogenesis and improves metabolic health in lean and obese mice. Biochim Biophys Acta Mol Cell Biol Lipids 2020; 1865:158582. [DOI: 10.1016/j.bbalip.2019.158582] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 11/22/2019] [Accepted: 12/01/2019] [Indexed: 02/07/2023]
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50
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Burgin HJ, McKenzie M. Understanding the role of OXPHOS dysfunction in the pathogenesis of ECHS1 deficiency. FEBS Lett 2020; 594:590-610. [PMID: 31944285 DOI: 10.1002/1873-3468.13735] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 12/12/2019] [Accepted: 12/27/2019] [Indexed: 12/29/2022]
Abstract
Mitochondria provide the main source of energy for eukaryotic cells, oxidizing fatty acids and sugars to generate ATP. Mitochondrial fatty acid β-oxidation (FAO) and oxidative phosphorylation (OXPHOS) are two key pathways involved in this process. Disruption of FAO can cause human disease, with patients commonly presenting with liver failure, hypoketotic glycaemia and rhabdomyolysis. However, patients with deficiencies in the FAO enzyme short-chain enoyl-CoA hydratase 1 (ECHS1) are typically diagnosed with Leigh syndrome, a lethal form of subacute necrotizing encephalomyelopathy that is normally associated with OXPHOS dysfunction. Furthermore, some ECHS1-deficient patients also exhibit secondary OXPHOS defects. This sequela of FAO disorders has long been thought to be caused by the accumulation of inhibitory fatty acid intermediates. However, new evidence suggests that the mechanisms involved are more complex, and that disruption of OXPHOS protein complex biogenesis and/or stability is also involved. In this review, we examine the clinical, biochemical and genetic features of all ECHS1-deficient patients described to date. In particular, we consider the secondary OXPHOS defects associated with ECHS1 deficiency and discuss their possible contribution to disease pathogenesis.
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Affiliation(s)
- Harrison James Burgin
- School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment, Deakin University, Geelong, Australia
| | - Matthew McKenzie
- School of Life and Environmental Sciences, Faculty of Science, Engineering and Built Environment, Deakin University, Geelong, Australia.,Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Melbourne, Australia.,Department of Molecular and Translational Science, Monash University, Melbourne, Australia
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