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Jun S, Angueira AR, Fein EC, Tan JME, Weller AH, Cheng L, Batmanov K, Ishibashi J, Sakers AP, Stine RR, Seale P. Control of murine brown adipocyte development by GATA6. Dev Cell 2023; 58:2195-2205.e5. [PMID: 37647897 PMCID: PMC10842351 DOI: 10.1016/j.devcel.2023.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 06/07/2023] [Accepted: 08/01/2023] [Indexed: 09/01/2023]
Abstract
Brown adipose tissue (BAT) is a thermogenic organ that protects animals against hypothermia and obesity. BAT derives from the multipotent paraxial mesoderm; however, the identity of embryonic brown fat progenitor cells and regulators of adipogenic commitment are unclear. Here, we performed single-cell gene expression analyses of mesenchymal cells during mouse embryogenesis with a focus on BAT development. We identified cell populations associated with the development of BAT, including Dpp4+ cells that emerge at the onset of adipogenic commitment. Immunostaining and lineage-tracing studies show that Dpp4+ cells constitute the BAT fascia and contribute minorly as adipocyte progenitors. Additionally, we identified the transcription factor GATA6 as a marker of brown adipogenic progenitor cells. Deletion of Gata6 in the brown fat lineage resulted in a striking loss of BAT. Together, these results identify progenitor and transitional cells in the brown adipose lineage and define a crucial role for GATA6 in BAT development.
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Affiliation(s)
- Seoyoung Jun
- Department of Biology, University of Pennsylvania, Philadelphia, PA 19104, USA; Institute for Diabetes, Obesity & Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Anthony R Angueira
- Institute for Diabetes, Obesity & Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Ethan C Fein
- Institute for Diabetes, Obesity & Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Josephine M E Tan
- Institute for Diabetes, Obesity & Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Angela H Weller
- Institute for Diabetes, Obesity & Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Lan Cheng
- Institute for Diabetes, Obesity & Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Kirill Batmanov
- Institute for Diabetes, Obesity & Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jeff Ishibashi
- Institute for Diabetes, Obesity & Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Alexander P Sakers
- Institute for Diabetes, Obesity & Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Rachel R Stine
- Institute for Diabetes, Obesity & Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Patrick Seale
- Institute for Diabetes, Obesity & Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA; Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
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Bae J, Yang Y, Xu X, Flaherty J, Overby H, Hildreth K, Chen J, Wang S, Zhao L. Naringenin, a citrus flavanone, enhances browning and brown adipogenesis: Role of peroxisome proliferator-activated receptor gamma. Front Nutr 2022; 9:1036655. [PMID: 36438760 PMCID: PMC9686290 DOI: 10.3389/fnut.2022.1036655] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Accepted: 10/19/2022] [Indexed: 11/11/2022] Open
Abstract
Identifying functional brown adipose tissue (BAT) has provided new hope for obesity treatment and prevention. Functional BAT includes classical BAT and brown-like adipose tissue converted from white adipose tissue. By promoting thermogenesis (i.e., heat production) via uncoupling protein 1 (UCP1), functional BAT can increase energy expenditure and aid obesity treatment and prevention. Naringenin (NAR) is a flavanone primarily found in citrus fruits. NAR has been reported to decrease body weight, increase energy expenditure in treated mice, and promote browning in human adipocytes. Here, we examined the effects of NAR on 3T3-L1 adipocytes' browning and β-adrenergic agonist isoproterenol (ISO)-stimulated thermogenic activation and classical murine brown adipogenesis. In addition, we demonstrated the signaling pathways and involvement of peroxisome proliferator-activated receptor gamma (PPARγ) in the process. We found that NAR did not increase Ucp1 mRNA expression at the basal (i.e., non-ISO stimulated) condition. Instead, it enhanced Ucp1 and Pgc-1α up-regulation and thermogenesis under ISO-stimulated conditions in 3T3-L1 adipocytes. NAR promoted protein kinase A (PKA) activation and phosphorylation of p38 MAPK downstream of ISO stimulation and activated PPARγ. Pharmacological inhibition of either PKA or p38 and PPARγ knockdown attenuated Ucp1 up-regulation by NAR. Moreover, NAR promoted brown adipogenesis by increasing lipid accumulation, brown marker expression, and thermogenesis in murine brown adipocytes, which was also attenuated by PPARγ knockdown. Together, our results suggest that NAR may promote the development of functional BAT in part through PPARγ activation. NAR's role in combating human obesity warrants further investigation.
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Affiliation(s)
- Jiyoung Bae
- Department of Nutrition, The University of Tennessee, Knoxville, Knoxville, TN, United States
| | - Yang Yang
- Department of Nutrition, The University of Tennessee, Knoxville, Knoxville, TN, United States
| | - Xinyun Xu
- Department of Nutrition, The University of Tennessee, Knoxville, Knoxville, TN, United States
| | - Jamie Flaherty
- Department of Nutrition, The University of Tennessee, Knoxville, Knoxville, TN, United States
| | - Haley Overby
- Department of Nutrition, The University of Tennessee, Knoxville, Knoxville, TN, United States
| | - Kelsey Hildreth
- Department of Nutrition, The University of Tennessee, Knoxville, Knoxville, TN, United States
| | - Jiangang Chen
- Department of Public Health, The University of Tennessee, Knoxville, Knoxville, TN, United States
| | - Shu Wang
- College of Health Solutions, Arizona State University, Phoenix, AZ, United States
| | - Ling Zhao
- Department of Nutrition, The University of Tennessee, Knoxville, Knoxville, TN, United States,*Correspondence: Ling Zhao,
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Cao Y, Deng B, Zhang S, Gao H, Song P, Zhang J, Zhao J. Astragalus polysaccharide regulates brown adipogenic differentiation through miR-1258-5p-modulated cut-like homeobox 1 expression. Acta Biochim Biophys Sin (Shanghai) 2021; 53:1713-1722. [PMID: 34718370 DOI: 10.1093/abbs/gmab151] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Indexed: 11/13/2022] Open
Abstract
Astragalus polysaccharide (APS) is the major natural active component of Astragalus membranaceus, which has been recognized as one of the most popular herbal medicines worldwide. Enhancing the formation and function of brown adipose tissue increases energy expenditure and hence may potentially be used against obesity and type 2 diabetes. The aim of the present study was to explore the effect and mechanism of APS on brown adipocyte formation. Mouse C3H10T 1/2 cells were subject to APS, and both proliferation and brown adipogenic differentiation were determined. The results showed that APS exhibits a decreased proliferation ability, which is accompanied by downregulated proliferating cell nuclear antigen, cyclin D1, and cyclin-dependent kinase 4. APS promotes the differentiation of C3H10T 1/2 cells into brown adipocytes and induces the expressions of key brown adipogenic transcriptional factors, including CCAAT/enhancer-binding protein β, uncoupling protein 1, and PR domain-containing 16. Importantly, APS enables insulin sensitization in brown adipocytes, which may proceed through activation of the canonical phosphatidylinositol-3-kinase (PI3K)/protein kinase B (AKT) signaling pathway and AMP-activated protein kinase (AMPK). Furthermore, the level of cut-like homeobox 1 (CUX1) is positively related to brown adipogenic differentiation, while APS regulates Cux1 expression through interaction with miR-1258-5p. Notably, the promotional effect of APS on brown adipogenic differentiation was abolished by Cux1 knockout. Collectively, our results suggest that APS enhances the differentiation of C3H10T 1/2 cells into brown adipocytes through regulating Cux1 via miR-1258-5p.
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Affiliation(s)
- Yuxin Cao
- College of Animal Sciences, Shanxi Agricultural University, Taigu 030801, China
| | - Buhao Deng
- College of Animal Sciences, Shanxi Agricultural University, Taigu 030801, China
| | - Shihe Zhang
- College of Animal Sciences, Shanxi Agricultural University, Taigu 030801, China
| | - Hongmei Gao
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Pengkang Song
- College of Animal Sciences, Shanxi Agricultural University, Taigu 030801, China
| | - Jianxin Zhang
- College of Animal Sciences, Shanxi Agricultural University, Taigu 030801, China
| | - Junxing Zhao
- College of Animal Sciences, Shanxi Agricultural University, Taigu 030801, China
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Zhang S, Song P, Chen X, Wang Y, Gao X, Liang L, Zhao J. Astragalus polysaccharide regulates brown adipocytes differentiation by miR-6911 targeting Prdm16. Lipids 2021; 57:45-55. [PMID: 34738642 DOI: 10.1002/lipd.12328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 10/15/2021] [Accepted: 10/21/2021] [Indexed: 01/22/2023]
Abstract
Brown adipose tissue (BAT) is a specialized tissue in mammals related to thermogenesis. The Astragalus polysaccharide (APS) is the major natural active component of Astragalus membranaceus, which has been recognized as one of the most popular herbal medicines worldwide. The role and possible mechanisms of APS on brown adipocytes differentiation is not well defined. Here, we explored the effect of APS on the differentiation of brown adipocytes in C3H10T 1/2 cells. The results showed that APS promoted the differentiation of brown adipocytes and improved insulin sensitivity along with significant increases in the expression of brown adipogenic marker proteins (C/EBPα, C/EBPβ, and PPARγ), thermogenesis marker proteins (UCP1, PRDM16, and PGC-1α), and insulin sensitivity marker protein (GLUT4). Meanwhile, the results showed that the amount of the phosphorylation of insulin receptor substrate 1 (p-IRS1) and phospho-AKT (p-AKT) which are critical factors in the insulin signaling pathway was increased without changing the total amount of IRS and AKT. Furthermore, the results of RNA-seq showed that APS altered the expression profiles of various miRNAs, and among which the expression of miR-6911 as a universal regulatory factor was significantly decreased. Importantly, we found that miR-6911 regulated the differentiation of brown adipocytes by targeting PR domain-containing 16 (Prdm16). In addition, after transfection of miR-6911 mimics, compared with the control and inhibitor group, PRDM16 protein expression significantly decreased, which was accompanied by the decrease of PPARγ, UCP1, and PGC-1α. Collectively, our results indicated that APS regulated brown adipocytes differentiation in C3H10T 1/2 cells via miRNA-6911 targeting Prdm16.
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Affiliation(s)
- Shihe Zhang
- College of Animal Sciences, Shanxi Agricultural University, Taigu, China
| | - Pengkang Song
- College of Animal Sciences, Shanxi Agricultural University, Taigu, China
| | - Xiaoyou Chen
- College of Animal Sciences, Shanxi Agricultural University, Taigu, China
| | - Yu Wang
- College of Animal Sciences, Shanxi Agricultural University, Taigu, China
| | - Xuyang Gao
- College of Animal Sciences, Shanxi Agricultural University, Taigu, China
| | - Lin Liang
- College of Animal Sciences, Shanxi Agricultural University, Taigu, China
| | - Junxing Zhao
- College of Animal Sciences, Shanxi Agricultural University, Taigu, China
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Yang Y, Xu X, Wu H, Yang J, Chen J, Morisseau C, Hammock BD, Bettaieb A, Zhao L. Differential Effects of 17,18-EEQ and 19,20-EDP Combined with Soluble Epoxide Hydrolase Inhibitor t-TUCB on Diet-Induced Obesity in Mice. Int J Mol Sci 2021; 22:ijms22158267. [PMID: 34361032 PMCID: PMC8347952 DOI: 10.3390/ijms22158267] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 07/27/2021] [Accepted: 07/28/2021] [Indexed: 12/24/2022] Open
Abstract
17,18-Epoxyeicosatetraenoic acid (17,18-EEQ) and 19,20-epoxydocosapentaenoic acid (19,20-EDP) are bioactive epoxides produced from n-3 polyunsaturated fatty acid eicosapentaenoic acid and docosahexaenoic acid, respectively. However, these epoxides are quickly metabolized into less active diols by soluble epoxide hydrolase (sEH). We have previously demonstrated that an sEH inhibitor, t-TUCB, decreased serum triglycerides (TG) and increased lipid metabolic protein expression in the brown adipose tissue (BAT) of diet-induced obese mice. This study investigates the preventive effects of t-TUCB (T) alone or combined with 19,20-EDP (T + EDP) or 17,18-EEQ (T + EEQ) on BAT activation in the development of diet-induced obesity and metabolic disorders via osmotic minipump delivery in mice. Both T + EDP and T + EEQ groups showed significant improvement in fasting glucose, serum triglycerides, and higher core body temperature, whereas heat production was only significantly increased in the T + EEQ group. Moreover, both the T + EDP and T + EEQ groups showed less lipid accumulation in the BAT. Although UCP1 expression was not changed, PGC1α expression was increased in all three treated groups. In contrast, the expression of CPT1A and CPT1B, which are responsible for the rate-limiting step for fatty acid oxidation, was only increased in the T + EDP and T + EEQ groups. Interestingly, as a fatty acid transporter, CD36 expression was only increased in the T + EEQ group. Furthermore, both the T + EDP and T + EEQ groups showed decreased inflammatory NFκB signaling in the BAT. Our results suggest that 17,18-EEQ or 19,20-EDP combined with t-TUCB may prevent high-fat diet-induced metabolic disorders, in part through increased thermogenesis, upregulating lipid metabolic protein expression, and decreasing inflammation in the BAT.
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Affiliation(s)
- Yang Yang
- Department of Nutrition, University of Tennessee, Knoxville, TN 37996, USA; (Y.Y.); (X.X.); (H.W.); (A.B.)
| | - Xinyun Xu
- Department of Nutrition, University of Tennessee, Knoxville, TN 37996, USA; (Y.Y.); (X.X.); (H.W.); (A.B.)
| | - Haoying Wu
- Department of Nutrition, University of Tennessee, Knoxville, TN 37996, USA; (Y.Y.); (X.X.); (H.W.); (A.B.)
| | - Jun Yang
- Department of Entomology and Nematology, and Comprehensive Cancer Center, University of California, Davis, CA 95616, USA; (J.Y.); (C.M.); (B.D.H.)
| | - Jiangang Chen
- Department of Public Health, University of Tennessee, Knoxville, TN 37996, USA;
| | - Christophe Morisseau
- Department of Entomology and Nematology, and Comprehensive Cancer Center, University of California, Davis, CA 95616, USA; (J.Y.); (C.M.); (B.D.H.)
| | - Bruce D. Hammock
- Department of Entomology and Nematology, and Comprehensive Cancer Center, University of California, Davis, CA 95616, USA; (J.Y.); (C.M.); (B.D.H.)
| | - Ahmed Bettaieb
- Department of Nutrition, University of Tennessee, Knoxville, TN 37996, USA; (Y.Y.); (X.X.); (H.W.); (A.B.)
- Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, TN 37996, USA
| | - Ling Zhao
- Department of Nutrition, University of Tennessee, Knoxville, TN 37996, USA; (Y.Y.); (X.X.); (H.W.); (A.B.)
- Correspondence: ; Tel.: +1-865-974-1833
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Gao XY, Deng BH, Li XR, Wang Y, Zhang JX, Hao XY, Zhao JX. Melatonin Regulates Differentiation of Sheep Brown Adipocyte Precursor Cells Via AMP-Activated Protein Kinase. Front Vet Sci 2021; 8:661773. [PMID: 34235199 PMCID: PMC8255384 DOI: 10.3389/fvets.2021.661773] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 05/10/2021] [Indexed: 01/10/2023] Open
Abstract
In sheep industry, hypothermia caused by insufficient brown adipose tissue (BAT) deposits is one of the major causes of lamb deaths. Enhancing the formation and function of BAT in neonatal lamb increases thermogenesis and hence reduces economic losses. The aim of the present study was to explore the effect and mechanism of melatonin on sheep brown adipocyte formation and function. Sheep brown adipocyte precursor cells (SBACs) isolated from perirenal BAT were treated with melatonin (1 and 10 nM). The SBACs subjected to melatonin exhibited a decreased proliferation ability, accompanied by down-regulated proliferating cell nuclear antigen, cyclin D1, and CDK4 protein contents in a melatonin dose-dependent manner. Melatonin promoted brown adipocyte formation and induced the expression of brown adipogenic markers, including uncoupling protein 1 and PR domain-containing 16 during differentiation of SBAC. Moreover, the AMP-activated protein kinase α1 (AMPKα1) activity was positively correlated with brown adipocyte formation potential. Importantly, melatonin effectively activated AMPKα1. Furthermore, promotional effects of melatonin were abolished by AMPKα1 knockout, suggesting the involvement of AMPKα1 in this process. Collectively, these results suggested that melatonin enhanced brown adipocyte formation in SBACs in vitro through activation of AMPKα1.
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Affiliation(s)
- Xu-Yang Gao
- College of Animal Science, Shanxi Agricultural University, Shanxi, China
| | - Bu-Hao Deng
- College of Animal Science, Shanxi Agricultural University, Shanxi, China
| | - Xin-Rui Li
- College of Animal Science, Shanxi Agricultural University, Shanxi, China
| | - Yu Wang
- College of Animal Science, Shanxi Agricultural University, Shanxi, China
| | - Jian-Xin Zhang
- College of Animal Science, Shanxi Agricultural University, Shanxi, China
| | - Xiao-Yan Hao
- College of Animal Science, Shanxi Agricultural University, Shanxi, China
| | - Jun-Xing Zhao
- College of Animal Science, Shanxi Agricultural University, Shanxi, China
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Overby H, Yang Y, Xu X, Graham K, Hildreth K, Choi S, Wan D, Morisseau C, Zeldin DC, Hammock BD, Wang S, Bettaieb A, Zhao L. Soluble Epoxide Hydrolase Inhibition by t-TUCB Promotes Brown Adipogenesis and Reduces Serum Triglycerides in Diet-Induced Obesity. Int J Mol Sci 2020; 21:ijms21197039. [PMID: 32987880 PMCID: PMC7582898 DOI: 10.3390/ijms21197039] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/18/2020] [Accepted: 09/21/2020] [Indexed: 12/21/2022] Open
Abstract
Brown adipose tissue (BAT) is an important target for obesity treatment and prevention. Soluble epoxide hydrolase (sEH) converts bioactive epoxy fatty acids (EpFAs) into less active diols. sEH inhibitors (sEHI) are beneficial in many chronic diseases by stabilizing EpFAs. However, roles of sEH and sEHI in brown adipogenesis and BAT activity in treating diet-induced obesity (DIO) have not been reported. sEH expression was studied in in vitro models of brown adipogenesis and the fat tissues of DIO mice. The effects of the sEHI, trans-4-{4-[3-(4-trifluoromethoxy-phenyl)-ureido]-cyclohexyloxy-benzoic acid (t-TUCB), were studied in vitro and in the obese mice via mini osmotic pump delivery. sEH expression was increased in brown adipogenesis and the BAT of the DIO mice. t-TUCB promoted brown adipogenesis in vitro. Although t-TCUB did not change body weight, fat pad weight, or glucose and insulin tolerance in the obese mice, it decreased serum triglycerides and increased protein expression of genes important for lipid metabolism in the BAT. Our results suggest that sEH may play a critical role in brown adipogenesis, and sEHI may be beneficial in improving BAT protein expression involved in lipid metabolism. Further studies using the sEHI combined with EpFA generating diets for obesity treatment and prevention are warranted.
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Affiliation(s)
- Haley Overby
- Department of Nutrition, University of Tennessee, Knoxville, TN 37996, USA; (H.O.); (Y.Y.); (X.X.); (K.G.); (K.H.); (S.C.)
| | - Yang Yang
- Department of Nutrition, University of Tennessee, Knoxville, TN 37996, USA; (H.O.); (Y.Y.); (X.X.); (K.G.); (K.H.); (S.C.)
| | - Xinyun Xu
- Department of Nutrition, University of Tennessee, Knoxville, TN 37996, USA; (H.O.); (Y.Y.); (X.X.); (K.G.); (K.H.); (S.C.)
| | - Katherine Graham
- Department of Nutrition, University of Tennessee, Knoxville, TN 37996, USA; (H.O.); (Y.Y.); (X.X.); (K.G.); (K.H.); (S.C.)
| | - Kelsey Hildreth
- Department of Nutrition, University of Tennessee, Knoxville, TN 37996, USA; (H.O.); (Y.Y.); (X.X.); (K.G.); (K.H.); (S.C.)
| | - Sue Choi
- Department of Nutrition, University of Tennessee, Knoxville, TN 37996, USA; (H.O.); (Y.Y.); (X.X.); (K.G.); (K.H.); (S.C.)
| | - Debin Wan
- Department of Entomology and Nematology, and Comprehensive Cancer Center, University of California, Davis, CA 95616, USA; (D.W.); (C.M.); (B.D.H.)
| | - Christophe Morisseau
- Department of Entomology and Nematology, and Comprehensive Cancer Center, University of California, Davis, CA 95616, USA; (D.W.); (C.M.); (B.D.H.)
| | - Darryl C. Zeldin
- Division of Intramural Research, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA;
| | - Bruce D. Hammock
- Department of Entomology and Nematology, and Comprehensive Cancer Center, University of California, Davis, CA 95616, USA; (D.W.); (C.M.); (B.D.H.)
| | - Shu Wang
- Department of Nutritional Sciences, Texas Tech University, Lubbock, TX 79409, USA;
| | - Ahmed Bettaieb
- Department of Nutrition, University of Tennessee, Knoxville, TN 37996, USA; (H.O.); (Y.Y.); (X.X.); (K.G.); (K.H.); (S.C.)
- Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, TN 37996, USA
- Correspondence: (A.B.); (L.Z.); Tel.: +1-865-974-6267 (A.B.); +1-865-974-1833 (L.Z.)
| | - Ling Zhao
- Department of Nutrition, University of Tennessee, Knoxville, TN 37996, USA; (H.O.); (Y.Y.); (X.X.); (K.G.); (K.H.); (S.C.)
- Correspondence: (A.B.); (L.Z.); Tel.: +1-865-974-6267 (A.B.); +1-865-974-1833 (L.Z.)
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Man XF, Hu N, Tan SW, Tang HN, Guo Y, Tang CY, Liu YQ, Tang J, Zhou CL, Wang F, Zhou HD. Insulin receptor substrate-1 inhibits high-fat diet-induced obesity by browning of white adipose tissue through miR-503. FASEB J 2020; 34:12308-12323. [PMID: 32721050 DOI: 10.1096/fj.201903283rr] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 06/13/2020] [Accepted: 07/01/2020] [Indexed: 12/18/2022]
Abstract
Genetic variation of insulin receptor substrate 1 (IRS-1) was found to modulate the insulin resistance of adipose tissues, but the underlying mechanism was not clear. To investigate how the IRS-1 was involved in the browning of white adipose tissue through miRNA, we identified a mutated Irs-1 (Irs-1-/- ) mice model and found that this mice had a reduced subcutaneous WAT (sWAT) and increased brown adipose tissue (BAT) in the interscapular region. So we isolated the bone marrow stromal cells and analyzed differentially expressed miRNAs and adipogenesis-related genes with miRNA arrays and PCR arrays. Irs-1-/- mice showed decreased miR-503 expression, but increased expression of its target, bone morphogenetic protein receptor type 1a (BMPR1a). Overexpression of miR-503 in preadipocytes downregulated BMPR1a and impaired adipogenic activity through the phosphotidylinositol 3-kinase (PI3K/Akt) pathway, while the inhibitor had the opposite effect. In both Irs-1-/- and cold-induced models, sWAT exhibited BAT features, and showed tissue-specific increased BMPR1a expression, PI3K expression, and Akt phosphorylation. Thus, our results showed that IRS-1 regulated brown preadipocyte differentiation and induced browning in sWAT through the miR-503-BMPR1a pathway, which played important roles in high-fat diet-induced obesity.
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Affiliation(s)
- Xiao-Fei Man
- Hunan Provincial Key Laboratory For Metabolic Bone Diseases, Department of Endocrinology and Metabolism, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China.,Department of Nephrology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Nan Hu
- Hunan Provincial Key Laboratory For Metabolic Bone Diseases, Department of Endocrinology and Metabolism, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Shu-Wen Tan
- Hunan Provincial Key Laboratory For Metabolic Bone Diseases, Department of Endocrinology and Metabolism, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hao-Neng Tang
- Hunan Provincial Key Laboratory For Metabolic Bone Diseases, Department of Endocrinology and Metabolism, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yue Guo
- Hunan Provincial Key Laboratory For Metabolic Bone Diseases, Department of Endocrinology and Metabolism, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Chen-Yi Tang
- Hunan Provincial Key Laboratory For Metabolic Bone Diseases, Department of Endocrinology and Metabolism, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Ya-Qing Liu
- Hunan Provincial Key Laboratory For Metabolic Bone Diseases, Department of Endocrinology and Metabolism, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Jun Tang
- Hunan Provincial Key Laboratory For Metabolic Bone Diseases, Department of Endocrinology and Metabolism, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Ci-La Zhou
- Hunan Provincial Key Laboratory For Metabolic Bone Diseases, Department of Endocrinology and Metabolism, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Fang Wang
- Hunan Provincial Key Laboratory For Metabolic Bone Diseases, Department of Endocrinology and Metabolism, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hou-De Zhou
- Hunan Provincial Key Laboratory For Metabolic Bone Diseases, Department of Endocrinology and Metabolism, National Clinical Research Center for Metabolic Diseases, The Second Xiangya Hospital, Central South University, Changsha, China
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Ghnaimawi S, Baum J, Liyanage R, Huang Y. Concurrent EPA and DHA Supplementation Impairs Brown Adipogenesis of C2C12 Cells. Front Genet 2020; 11:531. [PMID: 32595696 PMCID: PMC7303889 DOI: 10.3389/fgene.2020.00531] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 05/01/2020] [Indexed: 12/27/2022] Open
Abstract
Maternal dietary supplementation of n−3 polyunsaturated fatty acids (n−3 PUFAs), especially eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), is considered to play positive roles in fetal neuro system development. However, maternal n−3 PUFAs may induce molecular reprogramming of uncommitted fetal myoblasts into adipocyte phenotype, in turn affecting lipid metabolism and energy expenditure of the offspring. The objective of this in vitro study was to investigate the combined effects of EPA and DHA on C2C12 cells undergoing brown adipogenic differentiation. C2C12 myoblasts were cultured to confluency and then treated with brown adipogenic differentiation medium with and without 50 μM EPA and 50 μM DHA. After differentiation, mRNA and protein samples were collected. Gene expression and protein levels were analyzed by real-time PCR and western blot. General Proteomics analysis was conducted using mass spectrometric evaluation. The effect of EPA and DHA on cellular oxygen consumption was measured using a Seahorse XFP Analyzer. Cells treated with n−3 PUFAs had significantly less (P < 0.05) expression of the brown adipocyte marker genes PGC1α, DIO2, and UCP3. Expression of mitochondrial biogenesis-related genes TFAM, PGC1α, and PGC1β were significantly downregulated (P < 0.05) by n−3 PUFAs treatment. Expression of mitochondrial electron transportation chain (ETC)-regulated genes were significantly inhibited (P < 0.05) by n−3 PUFAs, including ATP5J2, COX7a1, and COX8b. Mass spectrometric and western blot evaluation showed protein levels of enzymes which regulate the ETC and Krebs cycle, including ATP synthase α and β (F1F0 complex), citrate synthase, succinate CO-A ligase, succinate dehydrogenase (complex II), ubiquinol-cytochrome c reductase complex subunits (complex III), aconitate hydratase, cytochrome c, and pyruvate carboxylase were all decreased in the n−3 PUFAs group (P < 0.05). Genomic and proteomic changes were accompanied by mitochondrial dysfunction, represented by significantly reduced oxygen consumption rate, ATP production, and proton leak (P < 0.05). This study suggested that EPA and DHA may alter the BAT fate of myoblasts by inhibiting mitochondrial biogenesis and activity and induce white-like adipogenesis, shifting the metabolism from lipid oxidation to synthesis.
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Affiliation(s)
- Saeed Ghnaimawi
- Department of Cell and Molecular Biology Program, University of Arkansas, Fayetteville, AR, United States
| | - Jamie Baum
- Department of Food Science, Division of Agriculture, University of Arkansas, Fayetteville, AR, United States
| | - Rohana Liyanage
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, AR, United States
| | - Yan Huang
- Department of Animal Science, Division of Agriculture, University of Arkansas, Fayetteville, AR, United States
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10
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Overby H, Yang Y, Xu X, Wang S, Zhao L. Indomethacin promotes browning and brown adipogenesis in both murine and human fat cells. Pharmacol Res Perspect 2020; 8:e00592. [PMID: 32430973 PMCID: PMC7237299 DOI: 10.1002/prp2.592] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 03/21/2020] [Accepted: 03/23/2020] [Indexed: 01/17/2023] Open
Abstract
Indomethacin (Indo), a nonsteroidal antiinflammatory drug, has been shown to promote murine brown adipogenesis both in vitro and in vivo, possibly due to its peroxisome proliferator-activated receptor gamma (PPARγ)-agonist activities. However, it is unclear whether Indo induces browning of white adipocytes from both murine and human origins or induces human brown adipogenesis. To bridge the gap, this study investigated the effects of increasing concentrations of Indo on murine 3T3-L1, human primary subcutaneous white adipocytes (HPsubQ), and human brown (HBr) adipocytes. The results show that Indo dose-dependently enhanced 3T3-L1 adipocyte differentiation and upregulated both mRNA and protein expression of brown and beige adipocyte markers, while simultaneously suppressing white adipocyte-specific marker mRNA expression. mRNA and protein expression of mitochondrial biogenesis and structural genes were dose-dependently enhanced in Indo treated 3T3-L1 adipocytes. This was accompanied by augmented mitochondrial DNA, enhanced oxygen consumption, proton leak, and maximal and spare respiratory capacity. Dose-dependent transactivation of PPARγ confirmed Indo's PPARγ-agonist activity in 3T3-L1 cells. Knockdown of PPARγ significantly attenuated Indo's activities in selective browning genes, demonstrating PPARγ dependence of these effects. Moreover, Indo enhanced mRNA and protein expression of brown markers in HPsubQ adipocytes. Interestingly, Indo-induced differential effects on individual PPARγ isoforms with significant dose-dependent induction of PPARγ-2 and suppression of PPARγ-1 protein expression. Finally, Indo significantly promoted brown adipogenesis in HBr cells. Taken together, these results demonstrate Indo to be a potent thermogenic compound in both murine and human fat cells and may be explored as a therapeutic agent for obesity treatment and prevention.
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Affiliation(s)
- Haley Overby
- Department of NutritionThe University of TennesseeKnoxvilleTNUSA
| | - Yang Yang
- Department of NutritionThe University of TennesseeKnoxvilleTNUSA
| | - Xinyun Xu
- Department of NutritionThe University of TennesseeKnoxvilleTNUSA
| | - Shu Wang
- Department of Nutritional SciencesTexas Tech UniversityLubbockTXUSA
| | - Ling Zhao
- Department of NutritionThe University of TennesseeKnoxvilleTNUSA
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11
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Abstract
New treatments for obesity and associated metabolic disease are increasingly warranted with the growth of the obesity pandemic. Brown adipose tissue (BAT) may represent a promising therapeutic target to treat obesity, as this tissue has been shown to regulate energy expenditure through non-shivering thermogenesis. Three different strategies could be employed for therapeutic targeting of human thermogenic adipocytes: increasing BAT mass through stimulation of BAT progenitors, increasing BAT function through regulatory pathways, and increasing WAT browning through promotion of beige adipocyte formation. However, these strategies require deeper understanding of human brown and beige adipocytes. While murine studies have greatly increased our understanding of BAT, it is becoming clear that human BAT does not exactly resemble that of the mouse, highlighting the need for human in vitro models of brown adipocytes. Several different human brown adipocyte models will be discussed here, along with the potential to improve brown adipocyte culture through recreation of the BAT microenvironment.
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Affiliation(s)
- Isabella Samuelson
- Metabolic Research Laboratories, University of Cambridge, Cambridge, United Kingdom
- Department of Cellular Genetics, Wellcome Sanger Institute (WT), Hinxton, United Kingdom
- *Correspondence: Isabella Samuelson
| | - Antonio Vidal-Puig
- Metabolic Research Laboratories, University of Cambridge, Cambridge, United Kingdom
- Department of Cellular Genetics, Wellcome Sanger Institute (WT), Hinxton, United Kingdom
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12
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Tu WZ, Fu YB, Xie X. RepSox, a small molecule inhibitor of the TGFβ receptor, induces brown adipogenesis and browning of white adipocytes. Acta Pharmacol Sin 2019; 40:1523-1531. [PMID: 31235818 PMCID: PMC7471457 DOI: 10.1038/s41401-019-0264-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 05/27/2019] [Indexed: 01/21/2023] Open
Abstract
Unlike white adipose tissue (WAT), brown adipose tissue (BAT) is mainly responsible for energy expenditure via thermogenesis by uncoupling the respiratory chain. Promoting the differentiation of brown fat precursor cells and the browning of white fat have become a research hotspot for the treatment of obesity and associated metabolic diseases. Several secreted factors and a number of small molecules have been found to promote brown adipogenesis. Here we report that a single small-molecule compound, RepSox, is sufficient to induce adipogenesis from mouse embryonic fibroblasts (MEFs) in fibroblast culture medium. RepSox is an inhibitor of the transforming growth factor-beta receptor I (TGF-β-RI), other inhibitors of TGF-β pathway such as SB431542, LY2157299, A83-01, and Tranilast are also effective in inducing adipogenesis from MEFs. These adipocytes express brown adipocyte-specific transcription factors and thermogenesis genes, and contain a large number of mitochondria and have a high level of mitochondrial respiratory activity. More interestingly, RepSox has also been found to promote the differentiation of the brown fat precursor cells and induce browning of the white fat precursor cells. These findings suggest that inhibitors of TGF-β signaling pathway might be developed as new therapeutics for obesity and type 2 diabetes.
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13
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Abstract
In this issue of Genes & Development, Shapira and colleagues (pp. 660-673) outline mechanisms by which the brown fat transcription factor early B-cell factor 2 (EBF2) selectively activates brown lineage-specific gene expression. The investigators show that EBF2 interacts with and recruits a tissue-specific BAF chromatin remodeling complex to brown fat gene enhancers, thereby regulating chromatin accessibility. Their findings provide important insight into epigenetic regulation of adipocyte fate and thermogenic gene expression.
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Affiliation(s)
- Jiexin Wang
- Department of Pathology and Laboratory Medicine and Molecular Biology Institute, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California 90272, USA
| | - Peter Tontonoz
- Department of Pathology and Laboratory Medicine and Molecular Biology Institute, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California 90272, USA
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14
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Shapira SN, Lim HW, Rajakumari S, Sakers AP, Ishibashi J, Harms MJ, Won KJ, Seale P. EBF2 transcriptionally regulates brown adipogenesis via the histone reader DPF3 and the BAF chromatin remodeling complex. Genes Dev 2017; 31:660-673. [PMID: 28428261 PMCID: PMC5411707 DOI: 10.1101/gad.294405.116] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 03/23/2017] [Indexed: 12/25/2022]
Abstract
Shapira et al. show that EBF2 physically interacts with the chromatin remodeler BRG1 and the BAF chromatin remodeling complex in brown adipocytes. They identified the histone reader protein DPF3 as a brown fat-selective component of the BAF complex that was required for brown fat gene programming and mitochondrial function. The transcription factor early B-cell factor 2 (EBF2) is an essential mediator of brown adipocyte commitment and terminal differentiation. However, the mechanisms by which EBF2 regulates chromatin to activate brown fat-specific genes in adipocytes were unknown. ChIP-seq (chromatin immunoprecipitation [ChIP] followed by deep sequencing) analyses in brown adipose tissue showed that EBF2 binds and regulates the activity of lineage-specific enhancers. Mechanistically, EBF2 physically interacts with the chromatin remodeler BRG1 and the BAF chromatin remodeling complex in brown adipocytes. We identified the histone reader protein DPF3 as a brown fat-selective component of the BAF complex that was required for brown fat gene programming and mitochondrial function. Loss of DPF3 in brown adipocytes reduced chromatin accessibility at EBF2-bound enhancers and led to a decrease in basal and catecholamine-stimulated expression of brown fat-selective genes. Notably, Dpf3 is a direct transcriptional target of EBF2 in brown adipocytes, thereby establishing a regulatory module through which EBF2 activates and also recruits DPF3-anchored BAF complexes to chromatin. Together, these results reveal a novel mechanism by which EBF2 cooperates with a tissue-specific chromatin remodeling complex to activate brown fat identity genes.
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Affiliation(s)
- Suzanne N Shapira
- Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.,Department of Cell and Developmental Biology, Smilow Center for Translational Research, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Hee-Woong Lim
- Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.,Department of Genetics, Smilow Center for Translational Research, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Sona Rajakumari
- Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.,Department of Cell and Developmental Biology, Smilow Center for Translational Research, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Alexander P Sakers
- Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.,Department of Cell and Developmental Biology, Smilow Center for Translational Research, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Jeff Ishibashi
- Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.,Department of Cell and Developmental Biology, Smilow Center for Translational Research, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Matthew J Harms
- Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.,Department of Cell and Developmental Biology, Smilow Center for Translational Research, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Kyoung-Jae Won
- Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.,Department of Genetics, Smilow Center for Translational Research, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Patrick Seale
- Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.,Department of Cell and Developmental Biology, Smilow Center for Translational Research, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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15
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Yang Q, Liang X, Sun X, Zhang L, Fu X, Rogers CJ, Berim A, Zhang S, Wang S, Wang B, Foretz M, Viollet B, Gang DR, Rodgers BD, Zhu MJ, Du M. AMPK/α-Ketoglutarate Axis Dynamically Mediates DNA Demethylation in the Prdm16 Promoter and Brown Adipogenesis. Cell Metab 2016; 24:542-554. [PMID: 27641099 PMCID: PMC5061633 DOI: 10.1016/j.cmet.2016.08.010] [Citation(s) in RCA: 177] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 06/06/2016] [Accepted: 08/16/2016] [Indexed: 12/12/2022]
Abstract
Promoting brown adipose tissue (BAT) development is an attractive strategy for the treatment of obesity, as activated BAT dissipates energy through thermogenesis; however, the mechanisms controlling BAT formation are not fully understood. We hypothesized that as a master regulator of energy metabolism, AMP-activated protein kinase (AMPK) may play a direct role in the process and found that AMPKα1 (PRKAA1) ablation reduced Prdm16 expression and impaired BAT development. During early brown adipogenesis, the cellular levels of α-ketoglutarate (αKG), a key metabolite required for TET-mediated DNA demethylation, were profoundly increased and required for active DNA demethylation of the Prdm16 promoter. AMPKα1 ablation reduced isocitrate dehydrogenase 2 activity and cellular αKG levels. Remarkably, postnatal AMPK activation with AICAR or metformin rescued obesity-induced suppression of brown adipogenesis and thermogenesis. In summary, AMPK is essential for the epigenetic control of BAT development through αKG, thus linking a metabolite to progenitor cell differentiation and thermogenesis.
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Affiliation(s)
- Qiyuan Yang
- Washington Center for Muscle Biology and Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA
| | - Xingwei Liang
- Washington Center for Muscle Biology and Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA
| | - Xiaofei Sun
- School of Food Sciences, Washington State University, Pullman, WA 99164, USA
| | - Lupei Zhang
- Washington Center for Muscle Biology and Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA; Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Xing Fu
- Washington Center for Muscle Biology and Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA
| | - Carl J Rogers
- Washington Center for Muscle Biology and Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA
| | - Anna Berim
- Institute of Biological Chemistry, Washington State University, Pullman, WA 99164, USA
| | - Shuming Zhang
- School of Food Sciences, Washington State University, Pullman, WA 99164, USA
| | - Songbo Wang
- Washington Center for Muscle Biology and Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA
| | - Bo Wang
- Washington Center for Muscle Biology and Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA
| | - Marc Foretz
- INSERM U1016, Institut Cochin, 75014 Paris, France; CNRS UMR 8104, 75014 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, 75006 Paris, France
| | - Benoit Viollet
- INSERM U1016, Institut Cochin, 75014 Paris, France; CNRS UMR 8104, 75014 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, 75006 Paris, France
| | - David R Gang
- Institute of Biological Chemistry, Washington State University, Pullman, WA 99164, USA
| | - Buel D Rodgers
- Washington Center for Muscle Biology and Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA
| | - Mei-Jun Zhu
- School of Food Sciences, Washington State University, Pullman, WA 99164, USA
| | - Min Du
- Washington Center for Muscle Biology and Department of Animal Sciences, Washington State University, Pullman, WA 99164, USA; Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100194, China.
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16
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Kim J, Okla M, Erickson A, Carr T, Natarajan SK, Chung S. Eicosapentaenoic Acid Potentiates Brown Thermogenesis through FFAR4-dependent Up-regulation of miR-30b and miR-378. J Biol Chem 2016; 291:20551-62. [PMID: 27489163 DOI: 10.1074/jbc.m116.721480] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Indexed: 01/25/2023] Open
Abstract
Emerging evidence suggests that n-3 polyunsaturated fatty acids (PUFA) promote brown adipose tissue thermogenesis. However, the underlying mechanisms remain elusive. Here, we hypothesize that n-3 PUFA promotes brown adipogenesis by modulating miRNAs. To test this hypothesis, murine brown preadipocytes were induced to differentiate the fatty acids of palmitic, oleate, or eicosapentaenoic acid (EPA). The increases of brown-specific signature genes and oxygen consumption rate by EPA were concurrent with up-regulation of miR-30b and 378 but not by oleate or palmitic acid. Next, we hypothesize that free fatty acid receptor 4 (Ffar4), a functional receptor for n-3 PUFA, modulates miR-30b and 378. Treatment of Ffar4 agonist (GW9508) recapitulated the thermogenic activation of EPA by increasing oxygen consumption rate, brown-specific marker genes, and miR-30b and 378, which were abrogated in Ffar4-silenced cells. Intriguingly, addition of the miR-30b mimic was unable to restore EPA-induced Ucp1 expression in Ffar4-depleted cells, implicating that Ffar4 signaling activity is required for up-regulating the brown adipogenic program. Moreover, blockage of miR-30b or 378 by locked nucleic acid inhibitors significantly attenuated Ffar4 as well as brown-specific signature gene expression, suggesting the signaling interplay between Ffar4 and miR-30b/378. The association between miR-30b/378 and brown thermogenesis was also confirmed in fish oil-fed C57/BL6 mice. Interestingly, the Ffar4 agonism-mediated signaling axis of Ffar4-miR-30b/378-Ucp1 was linked with an elevation of cAMP in brown adipocytes, similar to cold-exposed or fish oil-fed brown fat. Taken together, our work identifies a novel function of Ffar4 in modulating brown adipogenesis partly through a mechanism involving cAMP activation and up-regulation of miR-30b and miR-378.
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Affiliation(s)
- Jiyoung Kim
- From the Department of Nutrition and Health Sciences, the University of Nebraska, Lincoln, Nebraska 68583
| | - Meshail Okla
- From the Department of Nutrition and Health Sciences, the University of Nebraska, Lincoln, Nebraska 68583
| | - Anjeza Erickson
- From the Department of Nutrition and Health Sciences, the University of Nebraska, Lincoln, Nebraska 68583
| | - Timothy Carr
- From the Department of Nutrition and Health Sciences, the University of Nebraska, Lincoln, Nebraska 68583
| | - Sathish Kumar Natarajan
- From the Department of Nutrition and Health Sciences, the University of Nebraska, Lincoln, Nebraska 68583
| | - Soonkyu Chung
- From the Department of Nutrition and Health Sciences, the University of Nebraska, Lincoln, Nebraska 68583
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17
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Kida R, Yoshida H, Murakami M, Shirai M, Hashimoto O, Kawada T, Matsui T, Funaba M. Direct action of capsaicin in brown adipogenesis and activation of brown adipocytes. Cell Biochem Funct 2016; 34:34-41. [PMID: 26781688 DOI: 10.1002/cbf.3162] [Citation(s) in RCA: 282] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 12/16/2015] [Accepted: 12/16/2015] [Indexed: 11/11/2022]
Abstract
The ingestion of capsaicin, the principle pungent component of red and chili peppers, induces thermogenesis, in part, through the activation of brown adipocytes expressing genes related to mitochondrial biogenesis and uncoupling such as peroxisome proliferator-activated receptor (Ppar) γ coactivator-1α (Pgc-1α) and uncoupling protein 1 (Ucp1). Capsaicin has been suggested to induce the activation of brown adipocytes, which is mediated by the stimulation of sympathetic nerves. However, capsaicin may directly affect the differentiation of brown preadipocytes, brown adipocyte function, or both, through its significant absorption. We herein demonstrated that Trpv1, a capsaicin receptor, is expressed in brown adipose tissue, and that its expression level is increased during the differentiation of HB2 brown preadipocytes. Furthermore, capsaicin induced calcium influx in brown preadipocytes. A treatment with capsaicin in the early stage of brown adipogenesis did not affect lipid accumulation or the expression levels of Fabp4 (a gene expressed in mature adipocytes), Pparγ2 (a master regulator of adipogenesis) or brown adipocyte-selective genes. In contrast, a treatment with capsaicin in the late stage of brown adipogenesis slightly increased the expression levels of Fabp4, Pparγ2 and Pgc-1α. Although capsaicin did not affect the basal expression level of Ucp1, Ucp1 induction by forskolin was partially inhibited by capsaicin, irrespective of the dose of capsaicin. The results of the present study suggest the direct effects of capsaicin on brown adipocytes or in the late stage of brown adipogenesis.
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Affiliation(s)
- Ryosuke Kida
- Division of Applied Biosciences, Kyoto University Graduate School of Agriculture, Kyoto, Japan
| | - Hirofumi Yoshida
- Division of Applied Biosciences, Kyoto University Graduate School of Agriculture, Kyoto, Japan
| | - Masaru Murakami
- Laboratory of Molecular Biology, Azabu University School of Veterinary Medicine, Sagamihara, Japan
| | - Mitsuyuki Shirai
- Laboratory of Veterinary Pharmacology, Azabu University School of Veterinary Medicine, Sagamihara, Japan
| | - Osamu Hashimoto
- Laboratory of Experimental Animal Science, Kitasato University School of Veterinary Medicine, Towada, Japan
| | - Teruo Kawada
- Division of Food Science and Biotechnology, Kyoto University Graduate School of Agriculture, Kyoto, Japan
| | - Tohru Matsui
- Division of Applied Biosciences, Kyoto University Graduate School of Agriculture, Kyoto, Japan
| | - Masayuki Funaba
- Division of Applied Biosciences, Kyoto University Graduate School of Agriculture, Kyoto, Japan
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18
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Zhang H, Guan M, Townsend KL, Huang TL, An D, Yan X, Xue R, Schulz TJ, Winnay J, Mori M, Hirshman MF, Kristiansen K, Tsang JS, White AP, Cypess AM, Goodyear LJ, Tseng YH. MicroRNA-455 regulates brown adipogenesis via a novel HIF1an-AMPK-PGC1α signaling network. EMBO Rep 2015; 16:1378-93. [PMID: 26303948 DOI: 10.15252/embr.201540837] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 07/24/2015] [Indexed: 01/06/2023] Open
Abstract
Brown adipose tissue (BAT) dissipates chemical energy as heat and can counteract obesity. MicroRNAs are emerging as key regulators in development and disease. Combining microRNA and mRNA microarray profiling followed by bioinformatic analyses, we identified miR-455 as a new regulator of brown adipogenesis. miR-455 exhibits a BAT-specific expression pattern and is induced by cold and the browning inducer BMP7. In vitro gain- and loss-of-function studies show that miR-455 regulates brown adipocyte differentiation and thermogenesis. Adipose-specific miR-455 transgenic mice display marked browning of subcutaneous white fat upon cold exposure. miR-455 activates AMPKα1 by targeting HIF1an, and AMPK promotes the brown adipogenic program and mitochondrial biogenesis. Concomitantly, miR-455 also targets the adipogenic suppressors Runx1t1 and Necdin, initiating adipogenic differentiation. Taken together, the data reveal a novel microRNA-regulated signaling network that controls brown adipogenesis and may be a potential therapeutic target for human metabolic disorders.
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Affiliation(s)
- Hongbin Zhang
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Meiping Guan
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA Department of Endocrinology and Metabolism, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Kristy L Townsend
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA
| | - Tian Lian Huang
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA
| | - Ding An
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA
| | - Xu Yan
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA
| | - Ruidan Xue
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA
| | - Tim J Schulz
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA Adipocyte Development Research Group, German Institute of Human Nutrition, Potsdam, Germany
| | - Jonathon Winnay
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA
| | - Marcelo Mori
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA Department of Biophysics, Federal University of Sao Paulo, Sao Paulo, Brazil
| | - Michael F Hirshman
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA
| | | | - John S Tsang
- Systems Genomics and Bioinformatics Unit, Laboratory of Systems Biology, National Institute of Allergy and Infectious Diseases (NIAID) and Trans-NIH Center for Human Immunology, National Institutes of Health, Bethesda, MD, USA
| | - Andrew P White
- Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Aaron M Cypess
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA
| | - Laurie J Goodyear
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA
| | - Yu-Hua Tseng
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA Harvard Stem Cell Institute, Harvard University, Cambridge, MA, USA
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19
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Abstract
There are two different types of fat present in mammals: white adipose tissue, the primary site of energy storage, and brown adipose tissue, which is specializes in energy expenditure. Factors that specify the developmental fate and function of brown fat are poorly understood. Bone morphogenic proteins (BMPs) play an important role in adipogenesis. While BMP4 is capable of triggering commitment of stem cells to the white adipocyte lineage, BMP7 triggers commitment of progenitor cells to a brown adipocyte lineage and activates brown adipogenesis. To investigate the differential effects of BMPs on the development of adipocytes, C3H10T1/2 pluripotent cells were pretreated with BMP4 and BMP7, followed by different adipogenic induction cocktails. Both BMP4 and BMP7 unexpectedly activated a full program of brown adipogenesis, including induction of the brown fat-defining marker uncoupling protein-1 (UCP1), increasing the expression of early regulators of brown fat fate PRDM16 (PR domain-containing 16) and induction of mitochondrial biogenesis and function. Implantation of BMP4-pretreated C3H10T1/2 cells into nude mice resulted in the development of adipose tissue depots containing UCP1-positive brown adipocytes. Interestingly, BMP4 could also induce brown fat-like adipocytes in both white and brown preadipocytes, thereby decreasing the classical brown adipocyte marker Zic1 and increasing the recently identified beige adipocyte marker TMEM26. The data indicate an important role for BMP4 in promoting brown adipocyte differentiation and thermogenesis in vivo and in vitro and offers a potentially new therapeutic approach for the treatment of obesity.
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Affiliation(s)
- Ruidan Xue
- Department of Endocrinoloy and Metabolism, Huashan Hospital, Medical College Fudan University, Shanghai, China
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Abstract
Neuropeptide Y (NPY) is a potent hypothalamic orexigenic peptide. Within the hypothalamus, Npy is primarily expressed in the arcuate nucleus (ARC) and the dorsomedial hypothalamus (DMH). While the actions of ARC NPY in energy balance control have been well studied, a role for DMH NPY is still being unraveled. In contrast to ARC NPY that serves as one of downstream mediators of actions of leptin in maintaining energy homeostasis, DMH NPY is not under the control of leptin. Npy gene expression in the DMH is regulated by brain cholecystokinin (CCK) and other yet to be identified molecules. The findings of DMH NPY overexpression or induction in animals with increased energy demands and in certain rodent models of obesity implicate a role for DMH NPY in maintaining energy homeostasis. In support of this view, adeno-associated virus (AAV)-mediated overexpression of NPY in the DMH causes increases in food intake and body weight and exacerbates high-fat diet-induced hyperphagia and obesity. Knockdown of NPY in the DMH via AAV-mediated RNAi ameliorates hyperphagia, obesity and glucose intolerance of Otsuka Long-Evans Tokushima Fatty rats in which DMH NPY overexpression has been proposed to play a causal role. NPY knockdown in the DMH also prevents high-fat diet-induced hyperphagia, obesity and impaired glucose homeostasis. A detailed examination of actions of DMH NPY reveals that DMH NPY specifically affects nocturnal meal size and produces an inhibitory action on within meal satiety signals. In addition, DMH NPY modulates energy expenditure likely through affecting brown adipocyte formation and thermogenic activity. Overall, the recent findings provide clear evidence demonstrating critical roles for DMH NPY in energy balance control, and also imply a potential role for DMH NPY in maintaining glucose homeostasis.
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Affiliation(s)
- Sheng Bi
- Department of Psychiatry and Behavioral Science, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
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21
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Patel PR, Ramakrishnan SK, Kaw MK, Raphael CK, Ghosh S, Marino JS, Heinrich G, Lee SJ, Bourey RE, Hill JW, Jung DY, Morgan DA, Kim JK, Rahmouni SK, Najjar SM. Increased metabolic rate and insulin sensitivity in male mice lacking the carcino-embryonic antigen-related cell adhesion molecule 2. Diabetologia 2012; 55:763-72. [PMID: 22159884 PMCID: PMC3272352 DOI: 10.1007/s00125-011-2388-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Accepted: 11/07/2011] [Indexed: 10/14/2022]
Abstract
AIMS/HYPOTHESIS The carcino-embryonic antigen-related cell adhesion molecule (CEACAM)2 is produced in many feeding control centres in the brain, but not in peripheral insulin-targeted tissues. Global Ceacam2 null mutation causes insulin resistance and obesity resulting from hyperphagia and hypometabolism in female Ceacam2 homozygous null mutant mice (Cc2 [also known as Ceacam2](-/-)) mice. Because male mice are not obese, the current study examined their metabolic phenotype. METHODS The phenotype of male Cc2(-/-) mice was characterised by body fat composition, indirect calorimetry, hyperinsulinaemic-euglycaemic clamp analysis and direct recording of sympathetic nerve activity. RESULTS Despite hyperphagia, total fat mass was reduced, owing to the hypermetabolic state in male Cc2(-/-) mice. In contrast to females, male mice also exhibited insulin sensitivity with elevated β-oxidation in skeletal muscle, which is likely to offset the effects of increased food intake. Males and females had increased brown adipogenesis. However, only males had increased activation of sympathetic tone regulation of adipose tissue and increased spontaneous activity. The mechanisms underlying sexual dimorphism in energy balance with the loss of Ceacam2 remain unknown. CONCLUSIONS/INTERPRETATION These studies identified a novel role for CEACAM2 in the regulation of metabolic rate and insulin sensitivity via effects on brown adipogenesis, sympathetic nervous outflow to brown adipose tissue, spontaneous activity and energy expenditure in skeletal muscle.
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Affiliation(s)
- P. R. Patel
- Center for Diabetes and Endocrine Research, College of Medicine and Life Sciences, University of Toledo, Health Science Campus, 3000 Arlington Avenue, Mail Stop 1009, Toledo, OH 43614, USA
- Department of Physiology and Pharmacology at the College of Medicine and Life Sciences, University of Toledo, Health Science Campus, Toledo, OH, USA
| | - S. K. Ramakrishnan
- Center for Diabetes and Endocrine Research, College of Medicine and Life Sciences, University of Toledo, Health Science Campus, 3000 Arlington Avenue, Mail Stop 1009, Toledo, OH 43614, USA
- Department of Physiology and Pharmacology at the College of Medicine and Life Sciences, University of Toledo, Health Science Campus, Toledo, OH, USA
| | - M. K. Kaw
- Center for Diabetes and Endocrine Research, College of Medicine and Life Sciences, University of Toledo, Health Science Campus, 3000 Arlington Avenue, Mail Stop 1009, Toledo, OH 43614, USA
- Department of Physiology and Pharmacology at the College of Medicine and Life Sciences, University of Toledo, Health Science Campus, Toledo, OH, USA
| | - C. K. Raphael
- Center for Diabetes and Endocrine Research, College of Medicine and Life Sciences, University of Toledo, Health Science Campus, 3000 Arlington Avenue, Mail Stop 1009, Toledo, OH 43614, USA
- Department of Physiology and Pharmacology at the College of Medicine and Life Sciences, University of Toledo, Health Science Campus, Toledo, OH, USA
| | - S. Ghosh
- Center for Diabetes and Endocrine Research, College of Medicine and Life Sciences, University of Toledo, Health Science Campus, 3000 Arlington Avenue, Mail Stop 1009, Toledo, OH 43614, USA
- Department of Physiology and Pharmacology at the College of Medicine and Life Sciences, University of Toledo, Health Science Campus, Toledo, OH, USA
| | - J. S. Marino
- Center for Diabetes and Endocrine Research, College of Medicine and Life Sciences, University of Toledo, Health Science Campus, 3000 Arlington Avenue, Mail Stop 1009, Toledo, OH 43614, USA
- Department of Physiology and Pharmacology at the College of Medicine and Life Sciences, University of Toledo, Health Science Campus, Toledo, OH, USA
| | - G. Heinrich
- Center for Diabetes and Endocrine Research, College of Medicine and Life Sciences, University of Toledo, Health Science Campus, 3000 Arlington Avenue, Mail Stop 1009, Toledo, OH 43614, USA
- Department of Physiology and Pharmacology at the College of Medicine and Life Sciences, University of Toledo, Health Science Campus, Toledo, OH, USA
| | - S. J. Lee
- Center for Diabetes and Endocrine Research, College of Medicine and Life Sciences, University of Toledo, Health Science Campus, 3000 Arlington Avenue, Mail Stop 1009, Toledo, OH 43614, USA
- Department of Physiology and Pharmacology at the College of Medicine and Life Sciences, University of Toledo, Health Science Campus, Toledo, OH, USA
| | - R. E. Bourey
- Center for Diabetes and Endocrine Research, College of Medicine and Life Sciences, University of Toledo, Health Science Campus, 3000 Arlington Avenue, Mail Stop 1009, Toledo, OH 43614, USA
- Department of Internal Medicine at the College of Medicine and Life Sciences, University of Toledo, Health Science Campus, Toledo, OH, USA
| | - J. W. Hill
- Center for Diabetes and Endocrine Research, College of Medicine and Life Sciences, University of Toledo, Health Science Campus, 3000 Arlington Avenue, Mail Stop 1009, Toledo, OH 43614, USA
- Department of Physiology and Pharmacology at the College of Medicine and Life Sciences, University of Toledo, Health Science Campus, Toledo, OH, USA
| | - D. Y. Jung
- Department of Cellular and Molecular Physiology, Pennsylvania State University College of Medicine, Hershey, PA, USA
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - D. A. Morgan
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - J. K. Kim
- Department of Cellular and Molecular Physiology, Pennsylvania State University College of Medicine, Hershey, PA, USA
- Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - S. K. Rahmouni
- Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - S. M. Najjar
- Center for Diabetes and Endocrine Research, College of Medicine and Life Sciences, University of Toledo, Health Science Campus, 3000 Arlington Avenue, Mail Stop 1009, Toledo, OH 43614, USA,
- Department of Physiology and Pharmacology at the College of Medicine and Life Sciences, University of Toledo, Health Science Campus, Toledo, OH, USA
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