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Siddiqui IFS, Muthu ML, Reinhardt DP. Isolation and adipogenic differentiation of murine mesenchymal stem cells harvested from macrophage-depleted bone marrow and adipose tissue. Adipocyte 2024; 13:2350751. [PMID: 38860452 PMCID: PMC11174124 DOI: 10.1080/21623945.2024.2350751] [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: 01/16/2024] [Accepted: 04/29/2024] [Indexed: 06/12/2024] Open
Abstract
INTRODUCTION AND PURPOSE Mouse mesenchymal stem cells (MSCs) provide a resourceful tool to study physiological and pathological aspects of adipogenesis. Bone marrow-derived MSCs (BM-MSCs) and adipose tissue-derived MSCs (ASCs) are widely used for these studies. Since there is a wide spectrum of methods available, the purpose is to provide a focused hands-on procedural guide for isolation and characterization of murine BM-MSCs and ASCs and to effectively differentiate them into adipocytes. METHODS AND RESULTS Optimized harvesting procedures for murine BM-MSCs and ASCs are described and graphically documented. Since macrophages reside in bone-marrow and fat tissues and regulate the biological behaviour of BM-MSCs and ASCs, we included a procedure to deplete macrophages from the MSC preparations. The identity and stemness of BM-MSCs and ASCs were confirmed by flow cytometry using established markers. Since the composition and concentrations of adipogenic differentiation cocktails differ widely, we present a standardized four-component adipogenic cocktail, consisting of insulin, dexamethasone, 3-isobutyl-1-methylxanthine, and indomethacin to efficiently differentiate freshly isolated or frozen/thawed BM-MSCs and ASCs into adipocytes. We further included visualization and quantification protocols of the differentiated adipocytes. CONCLUSION This laboratory protocol was designed as a step-by-step procedure for harvesting murine BM-MSCs and ASCs and differentiating them into adipocytes.
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Affiliation(s)
| | - Muthu L. Muthu
- Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
| | - Dieter P. Reinhardt
- Faculty of Medicine and Health Sciences, McGill University, Montreal, Canada
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, Canada
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Mubtasim N, Gollahon L. Characterizing 3T3-L1 MBX Adipocyte Cell Differentiation Maintained with Fatty Acids as an In Vitro Model to Study the Effects of Obesity. Life (Basel) 2023; 13:1712. [PMID: 37629569 PMCID: PMC10455818 DOI: 10.3390/life13081712] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 07/31/2023] [Accepted: 08/03/2023] [Indexed: 08/27/2023] Open
Abstract
The increasing prevalence of obesity has prompted intensive research into understanding its role in pathogenesis and designing appropriate treatments. To determine the signals generated from the interaction of fat cells with a target organ, a reliable white adipocyte model in vitro is needed. Differentiated fibroblasts are the most extensively studied using in vitro cell models of white adipocytes. However, it can be argued that differentiated fibroblasts minimally recapitulate the consequences of obesity. Here, we describe 3T3-L1 MBX cells as a culture model for studying obese adipocytes and their effects. Differentiation of 3T3-L1 MBX cells was at first optimized and then maintained in the presence of fatty acids cocktail combination to induce the obese condition. Lipid accumulation and adipokine secretion profiles were analyzed. Results showed that fatty acid-maintained, differentiated 3T3-L1 MBX cells had significantly greater accumulation of lipids and significant changes in the adipokine secretions in comparison to differentiated 3T3-L1 MBX cells maintained in medium without fatty acids. To elucidate the molecular changes associated with adipogenesis and lipid accumulation profile of 3T3-L1 MBX cells, we have also explored the expression of some of the regulatory proteins related to the development and maintenance of adipocytes from the preadipocyte lineage.
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Affiliation(s)
| | - Lauren Gollahon
- Department of Biological Sciences, Texas Tech University, 2500 Broadway, Lubbock, TX 79409, USA;
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Nikolic M, Novakovic J, Ramenskaya G, Kokorekin V, Jeremic N, Jakovljevic V. Cooling down with Entresto. Can sacubitril/valsartan combination enhance browning more than coldness? Diabetol Metab Syndr 2022; 14:175. [PMID: 36419097 PMCID: PMC9686067 DOI: 10.1186/s13098-022-00944-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 11/04/2022] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND It is a growing importance to induce a new treatment approach to encourage weight loss but also to improve maintenance of lost weight. It has been shown that promotion of brown adipose tissue (BAT) function or acquisition of BAT characteristics in white adipose tissue (terms referred as "browning") can be protective against obesity. MAIN TEXT Amongst numerous established environmental influences on BAT activity, cold exposure is the best interested technique due to its not only effects on of BAT depots in proliferation process but also de novo differentiation of precursor cells via β-adrenergic receptor activation. A novel combination drug, sacubitril/valsartan, has been shown to be more efficient in reducing cardiovascular events and heart failure readmission compared to conventional therapy. Also, this combination of drugs increases the postprandial lipid oxidation contributing to energy expenditure, promotes lipolysis in adipocytes and reduces body weight. To date, there is no research examining potential of combined sacubitril/valsartan use to promote browning or mechanisms in the basis of this thermogenic process. CONCLUSION Due to the pronounced effects of cold and sacubitril/valsartan treatment on function and metabolism of BAT, the primary goal of further research should focused on investigation of the synergistic effects of the sacubitril/valsartan treatment at low temperature environmental conditions.
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Affiliation(s)
- Marina Nikolic
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | - Jovana Novakovic
- Department of Pharmacy, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
| | | | | | - Nevena Jeremic
- Department of Pharmacy, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia.
- First Moscow State Medical University IM Sechenov, Moscow, Russia.
| | - Vladimir Jakovljevic
- Department of Physiology, Faculty of Medical Sciences, University of Kragujevac, Kragujevac, Serbia
- Department of Human Pathology, First Moscow State Medical University IM Sechenov, Moscow, Russia
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Sreekumar S, Vijayan V, Singh F, Sudhakar M, Lakra R, Korrapati PS, Kiran MS. White to brown adipocyte transition mediated by Apigenin via VEGF-PRDM16 signaling. J Cell Biochem 2022; 123:1793-1807. [PMID: 35926149 DOI: 10.1002/jcb.30316] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 07/25/2022] [Accepted: 07/27/2022] [Indexed: 11/08/2022]
Abstract
The dysregulated energy metabolism in white adipose tissues results in derangement of biological signaling resulting in obesity. Lack of vascularization in these white adipose tissues is one of the major reasons for dysregulated energy metabolism. Not much work has been done in this direction to understand the role of angiogenesis in white adipose tissue metabolism. In the present study, we evaluated the effect of angiogenic modulator in the metabolism of white adipocyte (WAC). Bioactive Apigenin was selected and its angiogenic ability was studied. Apigenin was shown to be highly proangiogenic hence the effect of Apigenin on de novo and trans-differentiation of WAT was studied. Apigenin showed enhanced de novo differentiation and trans-differentiation of mouse WAC into brown-like phenotype. To understand the effect of Apigenin on adipose tissue vasculature, coculture studies were conducted. Cross talk between endothelial cell and adipocytes were observed in coculture studies. Gene expression studies of cocultured cells revealed that browning of WAC occurred by triggering the expression of Vascular endothelial growth factor A. The study provides a new insight for inducing metabolic shift in WACs by modulation of angiogenesis in WAC microenvironment by the upregulation of PRDM16 cascade to trigger browning for the treatment of obesity.
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Affiliation(s)
- Sreelekshmi Sreekumar
- Biological Materials Laboratory, Council of Scientific and Industrial Research-Central Leather Research Institute, Chennai, Tamil Nadu, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Vinu Vijayan
- Biological Materials Laboratory, Council of Scientific and Industrial Research-Central Leather Research Institute, Chennai, Tamil Nadu, India
| | - Fathe Singh
- Biological Materials Laboratory, Council of Scientific and Industrial Research-Central Leather Research Institute, Chennai, Tamil Nadu, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Manu Sudhakar
- Department of Human Genetics, Sri Ramachandra Institute of Higher Education and Research (DU), Chennai, India
| | - Rachita Lakra
- Biological Materials Laboratory, Council of Scientific and Industrial Research-Central Leather Research Institute, Chennai, Tamil Nadu, India
| | - Purna Sai Korrapati
- Biological Materials Laboratory, Council of Scientific and Industrial Research-Central Leather Research Institute, Chennai, Tamil Nadu, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Manikantan Syamala Kiran
- Biological Materials Laboratory, Council of Scientific and Industrial Research-Central Leather Research Institute, Chennai, Tamil Nadu, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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Bae CR, Kwon YG. CU06-1004 modulates the adenosine monophosphate (AMP)-associated protein kinase (AMPK) signaling pathway and inhibits lipogenesis in 3T3-L1 adipocytes and high-fat diet-induced obese mice. Life Sci 2022; 296:120440. [PMID: 35240161 DOI: 10.1016/j.lfs.2022.120440] [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: 11/24/2021] [Revised: 01/27/2022] [Accepted: 02/24/2022] [Indexed: 11/19/2022]
Abstract
AIMS The endothelial dysfunction blocker CU06-1004 exhibits anti-inflammatory effects in chronic diseases. Obesity is a major cause of chronic inflammation, and the effect of CU06-1004 on obesity has not been studied yet. Therefore, in this study, we investigated the anti-obesity properties of CU06-1004 in 3T3-L1 adipocytes and high-fat diet-induced obese mice. METHODS Differentiated 3T3-L1 adipocytes were treated with various concentrations of CU06-1004 (0-20 μg/mL) and subjected to Oil Red O staining to determine the levels of lipid droplet and intracellular triglyceride accumulation. Additionally, high-fat diet-induced obese C57BL/6J mice were administered with a low (10 mg/kg/day) or high (20 mg/kg/day) oral dose of CU06-1004. Finally, the expressions of genes and proteins involved in the adenosine monophosphate (AMP)-activated protein kinase (AMPK) signaling pathway were assessed by real-time polymerase chain reaction and Western blot, respectively. KEY FINDINGS The CU06-1004 administration reduced lipid accumulation in the 3T3-L1 adipocytes by inhibiting the expressions of peroxisome proliferator-activated receptor gamma, CCAAT/enhancer-binding protein alpha, fatty acid binding protein 4, and fatty acid synthase in a dose-dependent manner. Additionally, it significantly increased the phosphorylation of AMPKα and acetyl-CoA carboxylase in the 3T3-L1 adipocytes. An oral administration of high dose of CU06-1004 in the obese mice significantly decreased their body weight and the mesenteric white adipose tissue weight. Furthermore, CU06-1004 improved hepatic steatosis by reducing lipogenesis, besides improving insulin resistance and exerting systemic anti-inflammatory effects. SIGNIFICANCE Therefore, CU06-1004 may have therapeutic potential in the prevention of obesity and obesity-related disorders.
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Affiliation(s)
- Cho-Rong Bae
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Young-Guen Kwon
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, Republic of Korea.
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Zhang R, Zhang Q, Zhu S, Liu B, Liu F, Xu Y. Mulberry leaf (Morus alba L.): A review of its potential influences in mechanisms of action on metabolic diseases. Pharmacol Res 2021; 175:106029. [PMID: 34896248 DOI: 10.1016/j.phrs.2021.106029] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 11/17/2021] [Accepted: 12/06/2021] [Indexed: 12/18/2022]
Abstract
The leaves of Morus alba L. (called Sangye in Chinese, ML), which belong to the genus Morus., are highly valuable edible plants in nutrients and nutraceuticals. In Asian countries including China, Japan and Korea, ML are widely used as functional foods including beverages, noodles and herbal tea because of its biological and nutritional value. Meanwhile, ML-derived products in the form of powders, extracts and capsules are widely consumed as dietary supplements for controlling blood glucose and sugar. Clinical studies showed that ML play an important role in the treatment of metabolic diseases including the diabetes, dyslipidemia, obesity, atherosclerosis and hypertension. People broadly use ML due to their nutritiousness, deliciousness, safety, and abundant active benefits. However, the systematic pharmacological mechanisms of ML on metabolic diseases have not been fully revealed. Therefore, in order to fully utilize and scale relevant products about ML, this review summarizes the up-to-date information about the ML and its constituents effecting on metabolic disease.
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Affiliation(s)
- Ruiyuan Zhang
- Pharmacy College of Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China; State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu 611137, People's Republic of China
| | - Qian Zhang
- Pharmacy College of Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China; State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu 611137, People's Republic of China
| | - Shun Zhu
- Pharmacy College of Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China; State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu 611137, People's Republic of China
| | - Biyang Liu
- Pharmacy College of Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China; State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu 611137, People's Republic of China
| | - Fang Liu
- Pharmacy College of Chengdu University of Traditional Chinese Medicine, Chengdu 611137, People's Republic of China; State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu 611137, People's Republic of China.
| | - Yao Xu
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610072, People's Republic of China.
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Álvarez-Artime A, García-Soler B, Sainz RM, Mayo JC. Emerging Roles for Browning of White Adipose Tissue in Prostate Cancer Malignant Behaviour. Int J Mol Sci 2021; 22:5560. [PMID: 34074045 PMCID: PMC8197327 DOI: 10.3390/ijms22115560] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 05/15/2021] [Accepted: 05/17/2021] [Indexed: 12/12/2022] Open
Abstract
In addition to its well-known role as an energy repository, adipose tissue is one of the largest endocrine organs in the organism due to its ability to synthesize and release different bioactive molecules. Two main types of adipose tissue have been described, namely white adipose tissue (WAT) with a classical energy storage function, and brown adipose tissue (BAT) with thermogenic activity. The prostate, an exocrine gland present in the reproductive system of most mammals, is surrounded by periprostatic adipose tissue (PPAT) that contributes to maintaining glandular homeostasis in conjunction with other cell types of the microenvironment. In pathological conditions such as the development and progression of prostate cancer, adipose tissue plays a key role through paracrine and endocrine signaling. In this context, the role of WAT has been thoroughly studied. However, the influence of BAT on prostate tumor development and progression is unclear and has received much less attention. This review tries to bring an update on the role of different factors released by WAT which may participate in the initiation, progression and metastasis, as well as to compile the available information on BAT to discuss and open a new field of knowledge about the possible protective role of BAT in prostate cancer.
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Affiliation(s)
- Alejandro Álvarez-Artime
- Departamento de Morfología y Biología Celular, Redox Biology Unit, University of Oviedo, Facultad de Medicina, Julián Clavería 6, 33006 Oviedo, Spain; (A.Á.-A.); (B.G.-S.); (R.M.S.)
- Instituto Universitario de Oncología del Principado de Asturias (IUOPA), Santiago Gascón Building, Fernando Bongera s/n, 33006 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Avda. Hospital Universitario s/n, 33011 Oviedo, Spain
| | - Belén García-Soler
- Departamento de Morfología y Biología Celular, Redox Biology Unit, University of Oviedo, Facultad de Medicina, Julián Clavería 6, 33006 Oviedo, Spain; (A.Á.-A.); (B.G.-S.); (R.M.S.)
- Instituto Universitario de Oncología del Principado de Asturias (IUOPA), Santiago Gascón Building, Fernando Bongera s/n, 33006 Oviedo, Spain
| | - Rosa María Sainz
- Departamento de Morfología y Biología Celular, Redox Biology Unit, University of Oviedo, Facultad de Medicina, Julián Clavería 6, 33006 Oviedo, Spain; (A.Á.-A.); (B.G.-S.); (R.M.S.)
- Instituto Universitario de Oncología del Principado de Asturias (IUOPA), Santiago Gascón Building, Fernando Bongera s/n, 33006 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Avda. Hospital Universitario s/n, 33011 Oviedo, Spain
| | - Juan Carlos Mayo
- Departamento de Morfología y Biología Celular, Redox Biology Unit, University of Oviedo, Facultad de Medicina, Julián Clavería 6, 33006 Oviedo, Spain; (A.Á.-A.); (B.G.-S.); (R.M.S.)
- Instituto Universitario de Oncología del Principado de Asturias (IUOPA), Santiago Gascón Building, Fernando Bongera s/n, 33006 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Avda. Hospital Universitario s/n, 33011 Oviedo, Spain
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RYGB Is More Effective than VSG at Protecting Mice from Prolonged High-Fat Diet Exposure: An Occasion to Roll Up Our Sleeves? Obes Surg 2021; 31:3227-3241. [PMID: 33856636 DOI: 10.1007/s11695-021-05389-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 03/23/2021] [Accepted: 03/24/2021] [Indexed: 12/11/2022]
Abstract
PURPOSE Understanding the effects of Roux-en-Y gastric bypass (RYGB) and vertical sleeve gastrectomy (VSG) on adipose tissue physiology is important for the treatment of obesity-related metabolic disorders. By using robust mouse models of bariatric surgery that closely resemble those performed in humans, we can compare the effects of RYGB and VSG on adipose physiology in the absence of post-operative confounds such as diet and lifestyle changes. MATERIALS AND METHODS RYGB and VSG were compared using a diet-induced mouse model of obesity. High-fat diet (HFD) was administered post-operatively and changes to white and brown adipose tissue were evaluated, along with alterations to weight, glucose homeostasis, dyslipidemia, and insulin sensitivity. RESULTS After prolonged exposure to high-fat diet post-operatively, RYGB was effective in achieving sustained weight loss, while VSG unexpectedly accelerated weight gain rates. The resolution of obesity-related comorbidities such as glucose and insulin intolerance, dyslipidemia, and insulin sensitivity was improved after RYGB, but not for VSG. In RYGB, there were improvements to the function and health of white adipose tissue, enhanced brown adipose metabolism, and the browning of subcutaneous white adipose tissue, with no comparable changes seen for these factors after VSG. Some markers of systemic inflammation improved after both RYGB and VSG. CONCLUSION There are significantly different effects between RYGB and VSG when HFD is administered post-operatively and robust mouse models of bariatric surgery are used. RYGB resulted in lasting physiological and metabolic changes but VSG showed little difference from that of its sham-operated, DIO counterpart.
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Cancer-Associated Adipocytes in Breast Cancer: Causes and Consequences. Int J Mol Sci 2021; 22:ijms22073775. [PMID: 33917351 PMCID: PMC8038661 DOI: 10.3390/ijms22073775] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/01/2021] [Accepted: 04/02/2021] [Indexed: 02/07/2023] Open
Abstract
Breast cancer progression is highly dependent on the heterotypic interaction between tumor cells and stromal cells of the tumor microenvironment. Cancer-associated adipocytes (CAAs) are emerging as breast cancer cell partners favoring proliferation, invasion, and metastasis. This article discussed the intersection between extracellular signals and the transcriptional cascade that regulates adipocyte differentiation in order to appreciate the molecular pathways that have been described to drive adipocyte dedifferentiation. Moreover, recent studies on the mechanisms through which CAAs affect the progression of breast cancer were reviewed, including adipokine regulation, metabolic reprogramming, extracellular matrix remodeling, and immune cell modulation. An in-depth understanding of the complex vicious cycle between CAAs and breast cancer cells is crucial for designing novel strategies for new therapeutic interventions.
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Effects of Propolis Extract and Propolis-Derived Compounds on Obesity and Diabetes: Knowledge from Cellular and Animal Models. Molecules 2019; 24:molecules24234394. [PMID: 31805752 PMCID: PMC6930477 DOI: 10.3390/molecules24234394] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 11/28/2019] [Accepted: 11/29/2019] [Indexed: 12/23/2022] Open
Abstract
Propolis is a natural product resulting from the mixing of bee secretions with botanical exudates. Since propolis is rich in flavonoids and cinnamic acid derivatives, the application of propolis extracts has been tried in therapies against cancer, inflammation, and metabolic diseases. As metabolic diseases develop relatively slowly in patients, the therapeutic effects of propolis in humans should be evaluated over long periods of time. Moreover, several factors such as medical history, genetic inheritance, and living environment should be taken into consideration in human studies. Animal models, especially mice and rats, have some advantages, as genetic and microbiological variables can be controlled. On the other hand, cellular models allow the investigation of detailed molecular events evoked by propolis and derivative compounds. Taking advantage of animal and cellular models, accumulating evidence suggests that propolis extracts have therapeutic effects on obesity by controlling adipogenesis, adipokine secretion, food intake, and energy expenditure. Studies in animal and cellular models have also indicated that propolis modulates oxidative stress, the accumulation of advanced glycation end products (AGEs), and adipose tissue inflammation, all of which contribute to insulin resistance or defects in insulin secretion. Consequently, propolis treatment may mitigate diabetic complications such as nephropathy, retinopathy, foot ulcers, and non-alcoholic fatty liver disease. This review describes the beneficial effects of propolis on metabolic disorders.
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Li AN, Chen JJ, Li QQ, Zeng GY, Chen QY, Chen JL, Liao ZM, Jin P, Wang KS, Yang ZC. Alpha-glucosidase inhibitor 1-Deoxynojirimycin promotes beige remodeling of 3T3-L1 preadipocytes via activating AMPK. Biochem Biophys Res Commun 2019; 509:1001-1007. [DOI: 10.1016/j.bbrc.2019.01.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 01/05/2019] [Indexed: 12/11/2022]
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Rajan S, Satish S, Shankar K, Pandeti S, Varshney S, Srivastava A, Kumar D, Gupta A, Gupta S, Choudhary R, Balaramnavar VM, Narender T, Gaikwad AN. Aegeline inspired synthesis of novel β3-AR agonist improves insulin sensitivity in vitro and in vivo models of insulin resistance. Metabolism 2018. [PMID: 29524448 DOI: 10.1016/j.metabol.2018.03.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND AND PURPOSE In our drug discovery program of natural product, earlier we have reported Aegeline that is N-acylated-1-amino-2- alcohol, which was isolated from the leaves of Aeglemarmelos showed anti-hyperlipidemic activity for which the QSAR studies predicted the compound to be the β3-AR agonist, but the mechanism of its action was not elucidated. In our present study, we have evaluated the β3-AR activity of novel N-acyl-1-amino-3-arylopropanol synthetic mimics of aegeline and its beneficial effect in insulin resistance. In this study, we have proposed the novel pharmacophore model using reported molecules for antihyperlipidemic activity. The reported pharmacophore features were also compared with the newly developed pharmacophore model for the observed biological activity. EXPERIMENTAL APPROACH Based on 3D pharmacophore modeling of known β3AR agonist, we screened 20 synthetic derivatives of Aegeline from the literature. From these, the top scoring compound 10C was used for further studies. The in-slico result was further validated in HEK293T cells co-trransfected with human β3-AR and CRE-Luciferase reporter plasmid for β3-AR activity.The most active compound was selected and β3-AR activity was further validated in white and brown adipocytes differentiated from human mesenchymal stem cells (hMSCs). Insulin resistance model developed in hMSC derived adipocytes was used to study the insulin sensitizing property. 8 week HFD fed C57BL6 mice was given 50 mg/Kg of the selected compound and metabolic phenotyping was done to evaluate its anti-diabetic effect. RESULTS As predicted by in-silico 3D pharmacophore modeling, the compound 10C was found to be the most active and specific β3-AR agonist with EC50 value of 447 nM. The compound 10C activated β3AR pathway, induced lipolysis, fatty acid oxidation and increased oxygen consumption rate (OCR) in human adipocytes. Compound 10C induced expression of brown adipocytes specific markers and reverted chronic insulin induced insulin resistance in white adipocytes. The compound 10C also improved insulin sensitivity and glucose tolerance in 8 week HFD fed C57BL6 mice. CONCLUSION This study enlightens the use of in vitro insulin resistance model close to human physiology to elucidates the insulin sensitizing activity of the compound 10C and edifies the use of β3AR agonist as therapeutic interventions for insulin resistance and type 2 diabetes.
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Affiliation(s)
- Sujith Rajan
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research, CSIR-CDRI, India
| | - Sabbu Satish
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Kripa Shankar
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Sukanya Pandeti
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Salil Varshney
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research, CSIR-CDRI, India
| | - Ankita Srivastava
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research, CSIR-CDRI, India
| | - Durgesh Kumar
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research, CSIR-CDRI, India
| | - Abhishek Gupta
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Sanchita Gupta
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research, CSIR-CDRI, India
| | - Rakhi Choudhary
- Global Institute of Pharmaceutical Education and Research, Jaspur Road, Kashipur, Uttatarkhand 244713, India
| | - Vishal M Balaramnavar
- Global Institute of Pharmaceutical Education and Research, Jaspur Road, Kashipur, Uttatarkhand 244713, India
| | - Tadigoppula Narender
- Academy of Scientific and Innovative Research, CSIR-CDRI, India; Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Anil N Gaikwad
- Division of Pharmacology, CSIR-Central Drug Research Institute, Lucknow 226031, India; Academy of Scientific and Innovative Research, CSIR-CDRI, India.
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Grigoraş A, Amalinei C, Balan RA, Giuşcă SE, Avădănei ER, Lozneanu L, Căruntu ID. Adipocytes spectrum - From homeostasia to obesity and its associated pathology. Ann Anat 2018; 219:102-120. [PMID: 30049662 DOI: 10.1016/j.aanat.2018.06.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 06/17/2018] [Indexed: 02/07/2023]
Abstract
Firstly identified by anatomists, the fat tissue is nowadays an area of intense research due to increased global prevalence of obesity and its associated diseases. Histologically, there are four types of fat tissue cells which are currently recognized (white, brown, beige, and perivascular adipocytes). Therefore, in this study we are reviewing the most recent data regarding the origin, structure, and molecular mechanisms involved in the development of adipocytes. White adipocytes can store triglycerides as a consequence of lipogenesis, under the regulation of growth hormone or leptin and adiponectin, and release fatty acids resulted from lipolysis, under the regulation of the sympathetic nervous system, glucocorticoids, TNF-α, insulin, and natriuretic peptides. Brown adipocytes possess a mitochondrial transmembrane protein thermogenin or UCP1 which allows heat generation. Recently, thermogenic, UCP positive adipocytes have been identified in the subcutaneous white adipose tissue and have been named beige adipocytes. The nature of these cells is still controversial, as current theories are suggesting their origin either by transdifferentiation of white adipocytes, or by differentiation from an own precursor cell. Perivascular adipocytes surround most of the arteries, exhibiting a supportive role and being involved in the maintenance of intravascular temperature. Thoracic perivascular adipocytes resemble brown adipocytes, while abdominal ones are more similar to white adipocytes and, consequently, are involved in obesity-induced inflammatory reactions. The factors involved in the regulation of adipose stem cells differentiation may represent potential pathways to inhibit or to divert adipogenesis. Several molecules, such as pro-adipogenic factors (FGF21, BMP7, BMP8b, and Cox-2), cell surface proteins or receptors (Asc-1, PAT2, P2RX5), and hypothalamic receptors (MC4R) have been identified as the most promising targets for the development of future therapies. Further investigations are necessary to complete the knowledge about adipose tissue and the development of a new generation of therapeutic tools based on molecular targets.
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Affiliation(s)
- Adriana Grigoraş
- Department of Morphofunctional Sciences I, "Grigore T. Popa" University of Medicine and Pharmacy, Iasi, Romania; Department of Histopathology, Institute of Legal Medicine, Iasi, Romania.
| | - Cornelia Amalinei
- Department of Morphofunctional Sciences I, "Grigore T. Popa" University of Medicine and Pharmacy, Iasi, Romania; Department of Histopathology, Institute of Legal Medicine, Iasi, Romania.
| | - Raluca Anca Balan
- Department of Morphofunctional Sciences I, "Grigore T. Popa" University of Medicine and Pharmacy, Iasi, Romania.
| | - Simona Eliza Giuşcă
- Department of Morphofunctional Sciences I, "Grigore T. Popa" University of Medicine and Pharmacy, Iasi, Romania.
| | - Elena Roxana Avădănei
- Department of Morphofunctional Sciences I, "Grigore T. Popa" University of Medicine and Pharmacy, Iasi, Romania.
| | - Ludmila Lozneanu
- Department of Morphofunctional Sciences I, "Grigore T. Popa" University of Medicine and Pharmacy, Iasi, Romania.
| | - Irina-Draga Căruntu
- Department of Morphofunctional Sciences I, "Grigore T. Popa" University of Medicine and Pharmacy, Iasi, Romania.
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14
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Novel indole and triazole based hybrid molecules exhibit potent anti-adipogenic and antidyslipidemic activity by activating Wnt3a/β-catenin pathway. Eur J Med Chem 2018; 143:1345-1360. [DOI: 10.1016/j.ejmech.2017.10.034] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 10/05/2017] [Accepted: 10/11/2017] [Indexed: 12/18/2022]
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15
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Liou CJ, Wu SJ, Chen LC, Yeh KW, Chen CY, Huang WC. Acacetin from Traditionally Used Saussurea involucrata Kar. et Kir. Suppressed Adipogenesis in 3T3-L1 Adipocytes and Attenuated Lipid Accumulation in Obese Mice. Front Pharmacol 2017; 8:589. [PMID: 28900399 PMCID: PMC5581916 DOI: 10.3389/fphar.2017.00589] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 08/15/2017] [Indexed: 02/01/2023] Open
Abstract
Acacetin, a flavone that can be isolated from the Saussurea involucrata plant, has anti-tumor and anti-inflammatory properties that ameliorate airway hyperresponsiveness in asthmatic mice. This study investigated whether acacetin has anti-adipogenic effects in 3T3-L1 adipocytes and whether it regulates the inflammatory response in adipocytes and macrophages. It also investigated whether acacetin ameliorates lipid accumulation in high-fat diet- (HFD) induced obese mice. Differentiated 3T3-L1 cells were treated with acacetin. The glycerol levels in the culture medium were measured, and the expression of proteins and genes involved in adipogenesis and lipolysis were assayed by Western blot and real-time PCR, respectively. Inflammatory cytokine signaling pathway activity was assessed in macrophages that were treated with acacetin and cultured with differentiated medium from 3T3-L1 cells. Intraperitoneal injections of acacetin were administered to HFD-induced obese mice twice a week for 10 weeks. Acacetin significantly increased the levels of glycerol in the culture medium and significantly inhibited lipid accumulation in adipocytes. Acacetin reduced the expression of adipogenesis-related transcription factors, including the expression of the CCAAT/enhancer-binding protein; it also increased sirtuin 1 expression and AMPK phosphorylation in adipocytes. In macrophages cultured with differentiated media from 3T3-L1 adipocytes, acacetin reduced the levels of inflammatory mediators and the activity of the mitogen-activated protein kinase and NF-κB pathways. In obese mice, acacetin reduced both body weight and visceral adipose tissue weight. These results demonstrate that acacetin inhibited adipogenesis in adipocytes and in obese mice. Acacetin also reduced the inflammatory response of macrophages that were stimulated with differentiated media from 3T3-L1 cells.
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Affiliation(s)
- Chian-Jiun Liou
- Department of Nursing, Research Center for Chinese Herbal Medicine, Chang Gung University of Science and TechnologyTaoyuan, Taiwan.,Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial HospitalTaoyuan, Taiwan
| | - Shu-Ju Wu
- Department of Nutrition and Health Sciences, Chang Gung University of Science and TechnologyTaoyuan, Taiwan.,Aesthetic Medical Center, Department of Dermatology, Chang Gung Memorial HospitalTaoyuan, Taiwan
| | - Li-Chen Chen
- Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial HospitalTaoyuan, Taiwan
| | - Kuo-Wei Yeh
- Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial HospitalTaoyuan, Taiwan
| | - Chih-Ying Chen
- Department of Nutrition and Health Sciences, Chang Gung University of Science and TechnologyTaoyuan, Taiwan
| | - Wen-Chung Huang
- Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial HospitalTaoyuan, Taiwan.,Graduate Institute of Health Industry Technology, Research Center for Food and Cosmetic Safety, Research Center for Chinese Herbal Medicine, College of Human Ecology, Chang Gung University of Science and TechnologyTaoyuan, Taiwan
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16
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Bou M, Montfort J, Le Cam A, Rallière C, Lebret V, Gabillard JC, Weil C, Gutiérrez J, Rescan PY, Capilla E, Navarro I. Gene expression profile during proliferation and differentiation of rainbow trout adipocyte precursor cells. BMC Genomics 2017; 18:347. [PMID: 28472935 PMCID: PMC5418865 DOI: 10.1186/s12864-017-3728-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Accepted: 04/26/2017] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Excessive accumulation of adipose tissue in cultured fish is an outstanding problem in aquaculture. To understand the development of adiposity, it is crucial to identify the genes which expression is associated with adipogenic differentiation. Therefore, the transcriptomic profile at different time points (days 3, 8, 15 and 21) along primary culture development of rainbow trout preadipocytes has been investigated using an Agilent trout oligo microarray. RESULTS Our analysis identified 4026 genes differentially expressed (fold-change >3) that were divided into two major clusters corresponding to the main phases observed during the preadipocyte culture: proliferation and differentiation. Proliferation cluster comprised 1028 genes up-regulated from days 3 to 8 of culture meanwhile the differentiation cluster was characterized by 2140 induced genes from days 15 to 21. Proliferation was characterized by enrichment in genes involved in basic cellular and metabolic processes (transcription, ribosome biogenesis, translation and protein folding), cellular remodelling and autophagy. In addition, the implication of the eicosanoid signalling pathway was highlighted during this phase. On the other hand, the terminal differentiation phase was enriched with genes involved in energy production, lipid and carbohydrate metabolism. Moreover, during this phase an enrichment in genes involved in the formation of the lipid droplets was evidenced as well as the activation of the thyroid-receptor/retinoic X receptor (TR/RXR) and the peroxisome proliferator activated receptors (PPARs) signalling pathways. The whole adipogenic process was driven by a coordinated activation of transcription factors and epigenetic modulators. CONCLUSIONS Overall, our study demonstrates the coordinated expression of functionally related genes during proliferation and differentiation of rainbow trout adipocyte cells. Furthermore, the information generated will allow future investigations of specific genes involved in particular stages of fish adipogenesis.
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Affiliation(s)
- Marta Bou
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Av. Diagonal 643, 08028, Barcelona, Spain.,Present address: Nofima (Norwegian Institute of Food, Fisheries, and Aquaculture Research), P.O. Box 210, N-1432, Ås, Norway
| | - Jerôme Montfort
- INRA, UR1037 Laboratory of Fish Physiology and Genomics, Campus de Beaulieu, Rennes, F-35042, France
| | - Aurélie Le Cam
- INRA, UR1037 Laboratory of Fish Physiology and Genomics, Campus de Beaulieu, Rennes, F-35042, France
| | - Cécile Rallière
- INRA, UR1037 Laboratory of Fish Physiology and Genomics, Campus de Beaulieu, Rennes, F-35042, France
| | - Véronique Lebret
- INRA, UR1037 Laboratory of Fish Physiology and Genomics, Campus de Beaulieu, Rennes, F-35042, France
| | - Jean-Charles Gabillard
- INRA, UR1037 Laboratory of Fish Physiology and Genomics, Campus de Beaulieu, Rennes, F-35042, France
| | - Claudine Weil
- INRA, UR1037 Laboratory of Fish Physiology and Genomics, Campus de Beaulieu, Rennes, F-35042, France
| | - Joaquim Gutiérrez
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Av. Diagonal 643, 08028, Barcelona, Spain
| | - Pierre-Yves Rescan
- INRA, UR1037 Laboratory of Fish Physiology and Genomics, Campus de Beaulieu, Rennes, F-35042, France
| | - Encarnación Capilla
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Av. Diagonal 643, 08028, Barcelona, Spain
| | - Isabel Navarro
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Av. Diagonal 643, 08028, Barcelona, Spain.
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Ectopical expression of FABP4 gene can induce bovine muscle-derived stem cells adipogenesis. Biochem Biophys Res Commun 2017; 482:352-358. [DOI: 10.1016/j.bbrc.2016.11.067] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 11/11/2016] [Indexed: 01/13/2023]
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18
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Wu W, Sun Y, Zhao C, Zhao C, Chen X, Wang G, Pang W, Yang G. Lipogenesis in myoblasts and its regulation of CTRP6 by AdipoR1/Erk/PPARγ signaling pathway. Acta Biochim Biophys Sin (Shanghai) 2016; 48:509-19. [PMID: 27125977 DOI: 10.1093/abbs/gmw032] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 03/28/2016] [Indexed: 12/25/2022] Open
Abstract
The induced lipogenesis and its regulation in C2C12 myoblasts remain largely unclear. Here, we found that the cocktail method could significantly induce lipogenesis through regulating lipid metabolic genes and Erk1/2 phosphorylation in myoblasts. Meanwhile, the expression and secretion of CTRP6 were increased during ectopic lipogenesis. Moreover, CTRP6 knockdown down-regulated the levels of lipogenic genes and phosphorylated Erk1/2 (p-Erk1/2) in the early lipogenic stage, whereas up-regulated p-Erk1/2 in the terminal differentiation. Interestingly, the effect of CTRP6 siRNA was attenuated by U0126 (a special p-Erk1/2 inhibitor) in myoblasts. Furthermore, AdipoR1, not AdipoR2, was first identified as a receptor of CTRP6 during the process of mitotic clonal expansion. Collectively, we suggest that CTRP6 mediates the ectopic lipogenesis through AdipoR1/Erk/PPARγ signaling pathway in myoblasts. Our findings will shed light on the novel biological function of CTRP6 during myoblast lipogenesis and provide a hopeful direction of improving meat quality of domestic animal by lipogenic regulation in skeletal muscle myoblasts.
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Affiliation(s)
- Wenjing Wu
- Laboratory of Animal Fat Deposition & Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Yunmei Sun
- Laboratory of Animal Fat Deposition & Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Chen Zhao
- Laboratory of Animal Fat Deposition & Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Cunzhen Zhao
- Laboratory of Animal Fat Deposition & Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Xiaochang Chen
- Laboratory of Animal Fat Deposition & Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Guoqiang Wang
- Laboratory of Animal Fat Deposition & Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Weijun Pang
- Laboratory of Animal Fat Deposition & Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Gongshe Yang
- Laboratory of Animal Fat Deposition & Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
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19
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García-Alonso V, Titos E, Alcaraz-Quiles J, Rius B, Lopategi A, López-Vicario C, Jakobsson PJ, Delgado S, Lozano J, Clària J. Prostaglandin E2 Exerts Multiple Regulatory Actions on Human Obese Adipose Tissue Remodeling, Inflammation, Adaptive Thermogenesis and Lipolysis. PLoS One 2016; 11:e0153751. [PMID: 27124181 PMCID: PMC4849638 DOI: 10.1371/journal.pone.0153751] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 04/04/2016] [Indexed: 12/22/2022] Open
Abstract
Obesity induces white adipose tissue (WAT) dysfunction characterized by unremitting inflammation and fibrosis, impaired adaptive thermogenesis and increased lipolysis. Prostaglandins (PGs) are powerful lipid mediators that influence the homeostasis of several organs and tissues. The aim of the current study was to explore the regulatory actions of PGs in human omental WAT collected from obese patients undergoing laparoscopic bariatric surgery. In addition to adipocyte hypertrophy, obese WAT showed remarkable inflammation and total and pericellular fibrosis. In this tissue, a unique molecular signature characterized by altered expression of genes involved in inflammation, fibrosis and WAT browning was identified by microarray analysis. Targeted LC-MS/MS lipidomic analysis identified increased PGE2 levels in obese fat in the context of a remarkable COX-2 induction and in the absence of changes in the expression of terminal prostaglandin E synthases (i.e. mPGES-1, mPGES-2 and cPGES). IPA analysis established PGE2 as a common top regulator of the fibrogenic/inflammatory process present in this tissue. Exogenous addition of PGE2 significantly reduced the expression of fibrogenic genes in human WAT explants and significantly down-regulated Col1α1, Col1α2 and αSMA in differentiated 3T3 adipocytes exposed to TGF-β. In addition, PGE2 inhibited the expression of inflammatory genes (i.e. IL-6 and MCP-1) in WAT explants as well as in adipocytes challenged with LPS. PGE2 anti-inflammatory actions were confirmed by microarray analysis of human pre-adipocytes incubated with this prostanoid. Moreover, PGE2 induced expression of brown markers (UCP1 and PRDM16) in WAT and adipocytes, but not in pre-adipocytes, suggesting that PGE2 might induce the trans-differentiation of adipocytes towards beige/brite cells. Finally, PGE2 inhibited isoproterenol-induced adipocyte lipolysis. Taken together, these findings identify PGE2 as a regulator of the complex network of interactions driving uncontrolled inflammation and fibrosis and impaired adaptive thermogenesis and lipolysis in human obese visceral WAT.
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Affiliation(s)
- Verónica García-Alonso
- Department of Biochemistry and Molecular Genetics, Hospital Clínic-IDIBAPS, Barcelona, Spain
| | - Esther Titos
- Department of Biochemistry and Molecular Genetics, Hospital Clínic-IDIBAPS, Barcelona, Spain
- CIBERehd, Hospital Clínic-IDIBAPS, Barcelona, Spain
| | - Jose Alcaraz-Quiles
- Department of Biochemistry and Molecular Genetics, Hospital Clínic-IDIBAPS, Barcelona, Spain
| | - Bibiana Rius
- Department of Biochemistry and Molecular Genetics, Hospital Clínic-IDIBAPS, Barcelona, Spain
| | - Aritz Lopategi
- Department of Biochemistry and Molecular Genetics, Hospital Clínic-IDIBAPS, Barcelona, Spain
| | - Cristina López-Vicario
- Department of Biochemistry and Molecular Genetics, Hospital Clínic-IDIBAPS, Barcelona, Spain
| | | | - Salvadora Delgado
- Department of Gastrointestinal Surgery, Hospital Clínic-IDIBAPS, Barcelona, Spain
| | | | - Joan Clària
- Department of Biochemistry and Molecular Genetics, Hospital Clínic-IDIBAPS, Barcelona, Spain
- CIBERehd, Hospital Clínic-IDIBAPS, Barcelona, Spain
- Department of Biomedicine, University of Barcelona, Barcelona, Spain
- * E-mail:
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20
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Schlessinger K, Li W, Tan Y, Liu F, Souza SC, Tozzo E, Liu K, Thompson JR, Wang L, Muise ES. Gene expression in WAT from healthy humans and monkeys correlates with FGF21-induced browning of WAT in mice. Obesity (Silver Spring) 2015; 23:1818-29. [PMID: 26308478 DOI: 10.1002/oby.21153] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 04/06/2015] [Accepted: 04/21/2015] [Indexed: 12/23/2022]
Abstract
OBJECTIVE Identify a gene expression signature in white adipose tissue (WAT) that reports on WAT browning and is associated with a healthy phenotype. METHODS RNA from several different adipose depots across three species were analyzed by whole transcriptome profiling, including 1) mouse subcutaneous white fat, brown fat, and white fat after in vivo treatment with FGF21; 2) human subcutaneous and omental fat from insulin-sensitive and insulin-resistant patients; and 3) rhesus monkey subcutaneous fat from healthy and dysmetabolic individuals. RESULTS A "browning" signature in mice was identified by cross-referencing the FGF21-induced signature in WAT with the brown adipose tissue (BAT) vs. WAT comparison. In addition, gene expression levels in WAT from insulin-sensitive/healthy vs. insulin-resistant/dysmetabolic humans and rhesus monkeys, respectively, correlated with the gene expression levels in mouse BAT vs. WAT. A subset of 49 genes were identified that were consistently regulated or differentially expressed in the mouse and human data sets that could be used to monitor browning of WAT across species. CONCLUSIONS Gene expression profiles of WATs from healthy insulin-sensitive individuals correlate with those of BAT and FGF21-induced browning of WAT.
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Affiliation(s)
- Karni Schlessinger
- Department of Diabetes, Early Development and Discovery Sciences, Merck Research Laboratories, Merck Sharp & Dohme Corp., Kenilworth, New Jersey, USA
| | - Wenyu Li
- Department of Diabetes, Early Development and Discovery Sciences, Merck Research Laboratories, Merck Sharp & Dohme Corp., Kenilworth, New Jersey, USA
| | - Yejun Tan
- Department of Genetics and Pharmacogenomics, Early Development and Discovery Sciences, Merck Research Laboratories, Merck Sharp & Dohme Corp., Kenilworth, New Jersey, USA
| | - Franklin Liu
- Department of Diabetes, Early Development and Discovery Sciences, Merck Research Laboratories, Merck Sharp & Dohme Corp., Kenilworth, New Jersey, USA
| | - Sandra C Souza
- Department of Diabetes, Early Development and Discovery Sciences, Merck Research Laboratories, Merck Sharp & Dohme Corp., Kenilworth, New Jersey, USA
| | - Effie Tozzo
- Department of Diabetes, Early Development and Discovery Sciences, Merck Research Laboratories, Merck Sharp & Dohme Corp., Kenilworth, New Jersey, USA
| | - Kevin Liu
- Department of Diabetes, Early Development and Discovery Sciences, Merck Research Laboratories, Merck Sharp & Dohme Corp., Kenilworth, New Jersey, USA
| | - John R Thompson
- Department of Genetics and Pharmacogenomics, Early Development and Discovery Sciences, Merck Research Laboratories, Merck Sharp & Dohme Corp., Kenilworth, New Jersey, USA
| | - Liangsu Wang
- Department of Diabetes, Early Development and Discovery Sciences, Merck Research Laboratories, Merck Sharp & Dohme Corp., Kenilworth, New Jersey, USA
| | - Eric S Muise
- Department of Genetics and Pharmacogenomics, Early Development and Discovery Sciences, Merck Research Laboratories, Merck Sharp & Dohme Corp., Kenilworth, New Jersey, USA
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21
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Lettieri Barbato D, Tatulli G, Maria Cannata S, Bernardini S, Aquilano K, Ciriolo MR. Glutathione Decrement Drives Thermogenic Program In Adipose Cells. Sci Rep 2015; 5:13091. [PMID: 26260892 PMCID: PMC4531326 DOI: 10.1038/srep13091] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 07/17/2015] [Indexed: 01/21/2023] Open
Abstract
Adipose tissue metabolically adapts to external stimuli. We demonstrate that the induction of the thermogenic program in white adipocytes, through cold exposure in mice or in vitro adrenergic stimulation, is accompanied by a decrease in the intracellular content of glutathione (GSH). Moreover, the treatment with a GSH depleting agent, buthionine sulfoximine (BSO), recapitulates the effect of cold exposure resulting in the induction of thermogenic program. In particular, BSO treatment leads to enhanced uncoupling respiration as demonstrated by increased expression of thermogenic genes (e.g. Ucp1, Ppargc1a), augmented oxygen consumption and decreased mitochondrial transmembrane potential. Buffering GSH decrement by pre-treatment with GSH ester prevents the up-regulation of typical markers of uncoupling respiration. We demonstrate that FoxO1 activation is responsible for the conversion of white adipocytes into a brown phenotype as the “browning” effects of BSO are completely abrogated in cells down-regulating FoxO1. In mice, the BSO-mediated up-regulation of uncoupling genes results in weight loss that is at least in part ascribed to adipose tissue mass reduction. The induction of thermogenic program has been largely proposed to counteract obesity-related diseases. Based on these findings, we propose GSH as a novel therapeutic target to increase energy expenditure in adipocytes.
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Affiliation(s)
- Daniele Lettieri Barbato
- Dept. Biology, University of Rome "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Giuseppe Tatulli
- Scientific Institute for Research Hospitalization and Health Care and Università Telematica San Raffaele Roma, Via di Val Cannuta 247, 00166 Rome, Italy
| | - Stefano Maria Cannata
- Dept. Biology, University of Rome "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Sergio Bernardini
- Dept. Biology, University of Rome "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Katia Aquilano
- 1] Dept. Biology, University of Rome "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Rome, Italy [2] Scientific Institute for Research Hospitalization and Health Care and Università Telematica San Raffaele Roma, Via di Val Cannuta 247, 00166 Rome, Italy
| | - Maria R Ciriolo
- 1] Dept. Biology, University of Rome "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Rome, Italy [2] Scientific Institute for Research Hospitalization and Health Care and Università Telematica San Raffaele Roma, Via di Val Cannuta 247, 00166 Rome, Italy
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