151
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Marquez MP, Alencastro F, Madrigal A, Jimenez JL, Blanco G, Gureghian A, Keagy L, Lee C, Liu R, Tan L, Deignan K, Armstrong B, Zhao Y. The Role of Cellular Proliferation in Adipogenic Differentiation of Human Adipose Tissue-Derived Mesenchymal Stem Cells. Stem Cells Dev 2017; 26:1578-1595. [PMID: 28874101 DOI: 10.1089/scd.2017.0071] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Mitotic clonal expansion has been suggested as a prerequisite for adipogenesis in murine preadipocytes, but the precise role of cell proliferation during human adipogenesis is unclear. Using adipose tissue-derived human mesenchymal stem cells as an in vitro cell model for adipogenic study, a group of cell cycle regulators, including Cdk1 and CCND1, were found to be downregulated as early as 24 h after adipogenic initiation and consistently, cell proliferation activity was restricted to the first 48 h of adipogenic induction. Cell proliferation was either further inhibited using siRNAs targeting cell cycle genes or enhanced by supplementing exogenous growth factor, basic fibroblast growth factor (bFGF), at specific time intervals during adipogenesis. Expression knockdown of Cdk1 at the initiation of adipogenic induction resulted in significantly increased adipocytes, even though total number of cells was significantly reduced compared to siControl-treated cells. bFGF stimulated proliferation throughout adipogenic differentiation, but exerted differential effect on adipogenic outcome at different phases, promoting adipogenesis during mitotic phase (first 48 h), but significantly inhibiting adipogenesis during adipogenic commitment phase (days 3-6). Our results demonstrate that cellular proliferation is counteractive to adipogenic commitment in human adipogenesis. However, cellular proliferation stimulation can be beneficial for adipogenesis during the mitotic phase by increasing the population of cells capable of committing to adipocytes before adipogenic commitment.
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Affiliation(s)
- Maribel P Marquez
- 1 Biological Sciences Department, California State Polytechnic University at Pomona , Pomona, California
| | - Frances Alencastro
- 1 Biological Sciences Department, California State Polytechnic University at Pomona , Pomona, California
| | - Alma Madrigal
- 1 Biological Sciences Department, California State Polytechnic University at Pomona , Pomona, California
| | - Jossue Loya Jimenez
- 1 Biological Sciences Department, California State Polytechnic University at Pomona , Pomona, California
| | - Giselle Blanco
- 1 Biological Sciences Department, California State Polytechnic University at Pomona , Pomona, California
| | - Alex Gureghian
- 1 Biological Sciences Department, California State Polytechnic University at Pomona , Pomona, California
| | - Laura Keagy
- 1 Biological Sciences Department, California State Polytechnic University at Pomona , Pomona, California
| | - Cecilia Lee
- 1 Biological Sciences Department, California State Polytechnic University at Pomona , Pomona, California
| | - Robert Liu
- 1 Biological Sciences Department, California State Polytechnic University at Pomona , Pomona, California
| | - Lun Tan
- 1 Biological Sciences Department, California State Polytechnic University at Pomona , Pomona, California
| | - Kristen Deignan
- 1 Biological Sciences Department, California State Polytechnic University at Pomona , Pomona, California
| | | | - Yuanxiang Zhao
- 1 Biological Sciences Department, California State Polytechnic University at Pomona , Pomona, California
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152
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Kim JH, Park SJ, Kim B, Choe YG, Lee DS. Insulin-stimulated lipid accumulation is inhibited by ROS-scavenging chemicals, but not by the Drp1 inhibitor Mdivi-1. PLoS One 2017; 12:e0185764. [PMID: 28968439 PMCID: PMC5624627 DOI: 10.1371/journal.pone.0185764] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 09/19/2017] [Indexed: 12/11/2022] Open
Abstract
Adipocyte differentiation is regulated by intracellular reactive oxygen species (ROS) generation and mitochondrial fission and fusion processes. However, the correlation between intracellular ROS generation and mitochondrial remodeling during adipocyte differentiation is still unknown. Here, we investigated the effect on adipocyte differentiation of 3T3-L1 cells of intracellular ROS inhibition using N-acetyl cysteine (Nac) and Mito-TEMPO and of mitochondrial fission inhibition using Mdivi-1. Differentiated 3T3-L1 adipocytes displayed an increase in mitochondrial fission, ROS generation, and the expression of adipogenic and mitochondrial dynamics-related proteins. ROS scavenger (Nac or Mito-TEMPO) treatment inhibited ROS production, lipid accumulation, the expression of adipogenic and mitochondrial dynamics-related proteins, and mitochondrial fission during adipogenesis of 3T3-L1 cells. On the other hand, treatment with the mitochondrial fission inhibitor Mdivi-1 inhibited mitochondrial fission but did not inhibit ROS production, lipid accumulation, or the expression of adipogenic and mitochondrial dynamics-related proteins, with the exception of phosphorylated Drp1 (Ser616), in differentiated 3T3-L1 adipocytes. The inhibition of mitochondrial fission did not affect adipocyte differentiation, while intracellular ROS production decreased in parallel with inhibition of adipocyte differentiation. Therefore, our results indicated that ROS are an essential regulator of adipocyte differentiation in 3T3-L1 cells.
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Affiliation(s)
- Jung-Hak Kim
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, Republic of Korea
| | - Sun-Ji Park
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, Republic of Korea
| | - Bokyung Kim
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, Republic of Korea
| | - Young-Geun Choe
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, Republic of Korea
| | - Dong-Seok Lee
- School of Life Sciences, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, Republic of Korea
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153
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Ceja-Galicia ZA, Daniel A, Salazar AM, Pánico P, Ostrosky-Wegman P, Díaz-Villaseñor A. Effects of arsenic on adipocyte metabolism: Is arsenic an obesogen? Mol Cell Endocrinol 2017; 452:25-32. [PMID: 28495457 DOI: 10.1016/j.mce.2017.05.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 05/05/2017] [Accepted: 05/05/2017] [Indexed: 12/20/2022]
Abstract
The environmental obesogen model proposes that in addition to a high-calorie diet and diminished physical activity, other factors such as environmental pollutants and chemicals are involved in the development of obesity. Although arsenic has been recognized as a risk factor for Type 2 Diabetes with a specific mechanism, it is still uncertain whether arsenic is also an obesogen. The impairment of white adipose tissue (WAT) metabolism is crucial in the onset of obesity, and distinct studies have evaluated the effects of arsenic on it, however only in some of them for obesity-related purposes. Thus, the known effects of arsenic on WAT/adipocytes were integrated based on the diverse metabolic and physiological processes that occur in WAT and are altered in obesity, specifically: adipocyte growth, adipokine secretion, lipid metabolism, and glucose metabolism. The currently available information suggests that arsenic can negatively affect WAT metabolism, resulting in arsenic being a potential obesogen.
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Affiliation(s)
- Zeltzin A Ceja-Galicia
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico; Maestría en Ciencias de la Producción y Salud Animal, Unidad de Posgrado, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico
| | - Alberto Daniel
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico; Maestría en Ciencias Biológicas, Unidad de Posgrado, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico
| | - Ana María Salazar
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico
| | - Pablo Pánico
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico; Doctorado en Ciencias Biomédicas, Unidad de Posgrado, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico
| | - Patricia Ostrosky-Wegman
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico
| | - Andrea Díaz-Villaseñor
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico.
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154
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Prieto-Echagüe V, Lodh S, Colman L, Bobba N, Santos L, Katsanis N, Escande C, Zaghloul NA, Badano JL. BBS4 regulates the expression and secretion of FSTL1, a protein that participates in ciliogenesis and the differentiation of 3T3-L1. Sci Rep 2017; 7:9765. [PMID: 28852127 PMCID: PMC5575278 DOI: 10.1038/s41598-017-10330-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 08/08/2017] [Indexed: 01/01/2023] Open
Abstract
Bardet-Biedl syndrome is a model ciliopathy. Although the characterization of BBS proteins has evidenced their involvement in cilia, extraciliary functions for some of these proteins are also being recognized. Importantly, understanding both cilia and cilia-independent functions of the BBS proteins is key to fully dissect the cellular basis of the syndrome. Here we characterize a functional interaction between BBS4 and the secreted protein FSTL1, a protein linked to adipogenesis and inflammation among other functions. We show that BBS4 and cilia regulate FSTL1 mRNA levels, but BBS4 also modulates FSTL1 secretion. Moreover, we show that FSTL1 is a novel regulator of ciliogenesis thus underscoring a regulatory loop between FSTL1 and cilia. Finally, our data indicate that BBS4, cilia and FSTL1 are coordinated during the differentiation of 3T3-L1 cells and that FSTL1 plays a role in this process, at least in part, by modulating ciliogenesis. Therefore, our findings are relevant to fully understand the development of BBS-associated phenotypes such as obesity.
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Affiliation(s)
- Victoria Prieto-Echagüe
- Human Molecular Genetics Laboratory, Institut Pasteur de Montevideo, Mataojo 2020, Montevideo, CP11400, Uruguay.,INDICyO Institutional Program, Institut Pasteur de Montevideo, Mataojo 2020, Montevideo, CP11400, Uruguay
| | - Sukanya Lodh
- Division of Endocrinology, Diabetes, and Nutrition, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Laura Colman
- INDICyO Institutional Program, Institut Pasteur de Montevideo, Mataojo 2020, Montevideo, CP11400, Uruguay.,Metabolic Diseases and Aging Laboratory, Institut Pasteur de Montevideo, Mataojo 2020, Montevideo, CP11400, Uruguay
| | - Natalia Bobba
- INDICyO Institutional Program, Institut Pasteur de Montevideo, Mataojo 2020, Montevideo, CP11400, Uruguay.,Metabolic Diseases and Aging Laboratory, Institut Pasteur de Montevideo, Mataojo 2020, Montevideo, CP11400, Uruguay
| | - Leonardo Santos
- INDICyO Institutional Program, Institut Pasteur de Montevideo, Mataojo 2020, Montevideo, CP11400, Uruguay.,Metabolic Diseases and Aging Laboratory, Institut Pasteur de Montevideo, Mataojo 2020, Montevideo, CP11400, Uruguay
| | - Nicholas Katsanis
- Department of Cell Biology and Center for Human Disease Modeling, Duke University Medical Center, Durham, NC, 27710, USA
| | - Carlos Escande
- INDICyO Institutional Program, Institut Pasteur de Montevideo, Mataojo 2020, Montevideo, CP11400, Uruguay.,Metabolic Diseases and Aging Laboratory, Institut Pasteur de Montevideo, Mataojo 2020, Montevideo, CP11400, Uruguay
| | - Norann A Zaghloul
- Division of Endocrinology, Diabetes, and Nutrition, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Jose L Badano
- Human Molecular Genetics Laboratory, Institut Pasteur de Montevideo, Mataojo 2020, Montevideo, CP11400, Uruguay. .,INDICyO Institutional Program, Institut Pasteur de Montevideo, Mataojo 2020, Montevideo, CP11400, Uruguay.
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155
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Tissue Source and Cell Expansion Condition Influence Phenotypic Changes of Adipose-Derived Stem Cells. Stem Cells Int 2017; 2017:7108458. [PMID: 29138638 PMCID: PMC5613713 DOI: 10.1155/2017/7108458] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 06/26/2017] [Accepted: 07/13/2017] [Indexed: 01/15/2023] Open
Abstract
Stem cells derived from the subcutaneous adipose tissue of debrided burned skin represent an appealing source of adipose-derived stem cells (ASCs) for regenerative medicine. Traditional tissue culture uses fetal bovine serum (FBS), which complicates utilization of ASCs in human medicine. Human platelet lysate (hPL) is one potential xeno-free, alternative supplement for use in ASC culture. In this study, adipogenic and osteogenic differentiation in media supplemented with 10% FBS or 10% hPL was compared in human ASCs derived from abdominoplasty (HAP) or from adipose associated with debrided burned skin (BH). Most (95–99%) cells cultured in FBS were stained positive for CD73, CD90, CD105, and CD142. FBS supplementation was associated with increased triglyceride content and expression of adipogenic genes. Culture in hPL significantly decreased surface staining of CD105 by 31% and 48% and CD142 by 27% and 35% in HAP and BH, respectively (p < 0.05). Culture of BH-ASCs in hPL also increased expression of markers of osteogenesis and increased ALP activity. These data indicate that application of ASCs for wound healing may be influenced by ASC source as well as culture conditions used to expand them. As such, these factors must be taken into consideration before ASCs are used for regenerative purposes.
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156
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Mo D, Yu K, Chen H, Chen L, Liu X, He Z, Cong P, Chen Y. Transcriptome Landscape of Porcine Intramuscular Adipocytes during Differentiation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:6317-6328. [PMID: 28673084 DOI: 10.1021/acs.jafc.7b02039] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The adipocyte differentiation process, controlled by a tightly regulated transcriptional cascade, contributes partly to determine intramuscular adipose tissue (IMAT) mass, which is associated with meat quality in food animals, as well as obesity and related metabolic complications in human. Thus, this study aimed to characterize genes critical for intramuscular preadipocyte differentiation. Primary intramuscular preadipocytes were isolated from pigs, and mRNA profiles were performed at several key points (0 h, 4 h, 8 h, 1 day, 2 days, and 6 days) during adipogenesis using microarrays. By gene functional analysis, we identified numerous differentially expressed genes among distinct stages of intramuscular preadipocyte differentiation, which included numbers of transcription factors in the early stages. We obtained 4 clusters of differential gene expression pattern, including crucial candidate genes associated with adipogenesis of intramuscular adipocytes. Further, we demonstrated that POSTN and FGFR4 suppressed, whereas AKR1CL1 promoted, the expression of adipogenic marker PPARγ and C/EBPα. Taken together, our data delineated the transcriptome landscape during porcine intramuscular preadipocyte differentiation, which provided a valuable resource for finding the genes responsible for IMAT formation.
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Affiliation(s)
- Delin Mo
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University , Guangzhou 510006, China
| | - Kaifan Yu
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University , Guangzhou 510006, China
| | - Hu Chen
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University , Guangzhou 510006, China
| | - Luxi Chen
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University , Guangzhou 510006, China
| | - Xiaohong Liu
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University , Guangzhou 510006, China
| | - Zuyong He
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University , Guangzhou 510006, China
| | - Peiqing Cong
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University , Guangzhou 510006, China
| | - Yaosheng Chen
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University , Guangzhou 510006, China
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157
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Implication of Ceramide Kinase in Adipogenesis. Mediators Inflamm 2017; 2017:9374563. [PMID: 28951635 PMCID: PMC5603748 DOI: 10.1155/2017/9374563] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 06/21/2017] [Indexed: 01/01/2023] Open
Abstract
Ceramide kinase (CerK) plays a critical role in the regulation of cell growth and survival and has been implicated in proinflammatory responses. In this work, we demonstrate that CerK regulates adipocyte differentiation, a process associated with obesity, which causes chronic low-grade inflammation. CerK was upregulated during differentiation of 3T3-L1 preadipocytes into mature adipocytes. Noteworthy, knockdown of CerK using specific siRNA to silence the gene encoding this kinase resulted in substantial decrease of lipid droplet formation and potent depletion in the content of triacylglycerols in the adipocytes. Additionally, CerK knockdown caused blockade of leptin secretion, an adipokine that is crucial for regulation of energy balance in the organism and that is increased in the obese state. Moreover, CerK gene silencing decreased the expression of peroxisome proliferator-activated receptor gamma (PPARγ), which is considered the master regulator of adipogenesis. It can be concluded that CerK is a novel regulator of adipogenesis, an action that may have potential implications in the development of obesity, and that targeting this kinase may be beneficial for treatment of obesity-associated diseases.
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158
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Côté JA, Lessard J, Pelletier M, Marceau S, Lescelleur O, Fradette J, Tchernof A. Role of the TGF-β pathway in dedifferentiation of human mature adipocytes. FEBS Open Bio 2017; 7:1092-1101. [PMID: 28781950 PMCID: PMC5537071 DOI: 10.1002/2211-5463.12250] [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: 01/20/2017] [Revised: 04/25/2017] [Accepted: 05/11/2017] [Indexed: 11/24/2022] Open
Abstract
Dedifferentiation of adipocytes contributes to the generation of a proliferative cell population that could be useful in cellular therapy or tissue engineering. Adipocytes can dedifferentiate into precursor cells to acquire a fibroblast‐like phenotype using ceiling culture, in which the buoyancy of fat cells is exploited to allow them to adhere to the inner surface of a container. Ceiling culture is usually performed in flasks, which limits the ability to test various culture conditions. Using a new six‐well plate ceiling culture approach, we examined the relevance of TGF‐β signaling during dedifferentiation. Adipose tissue samples from patients undergoing bariatric surgery were digested with collagenase, and cell suspensions were used for ceiling cultures. Using the six‐well plate approach, cells were treated with SB431542 (an inhibitor of TGF‐β receptor ALK5) or human TGF‐β1 during dedifferentiation. Gene expression was measured in these cultures and in whole adipose tissue, the stromal–vascular fraction (SVF), mature adipocytes, and dedifferentiated fat (DFAT) cells. TGF‐β1 and collagen type I alpha 1 (COL1A1) gene expression was significantly higher in DFAT cells compared to whole adipose tissue samples and SVF cells. TGF‐β1, COL1A1, and COL6A3 gene expression was significantly higher at day 12 of dedifferentiation compared to day 0. In the six‐well plate model, treatment with TGF‐β1 or SB431542, respectively, stimulated and inhibited the TGF‐β pathway as shown by increased TGF‐β1, TGF‐β2, COL1A1, and COL6A3 gene expression and decreased expression of TGF‐β1, COL1A1, COL1A2, and COL6A3, respectively. Treatment of DFAT cells with TGF‐β1 increased the phosphorylation level of SMAD 2 and SMAD 3. Thus, a new six‐well plate model for ceiling culture allowed us to demonstrate a role for TGF‐β in modulating collagen gene expression during dedifferentiation of mature adipocytes.
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Affiliation(s)
- Julie Anne Côté
- Institut Universitaire de Cardiologie et de Pneumologie de Québec Canada.,Endocrinologie et Néphrologie CHU de Québec Canada.,École de Nutrition Université Laval Québec Canada
| | - Julie Lessard
- Institut Universitaire de Cardiologie et de Pneumologie de Québec Canada
| | - Mélissa Pelletier
- Institut Universitaire de Cardiologie et de Pneumologie de Québec Canada.,Endocrinologie et Néphrologie CHU de Québec Canada
| | - Simon Marceau
- Institut Universitaire de Cardiologie et de Pneumologie de Québec Canada
| | - Odette Lescelleur
- Institut Universitaire de Cardiologie et de Pneumologie de Québec Canada
| | - Julie Fradette
- Faculté de Médecine, Département de Chirurgie, Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX Université Laval Québec Canada.,Division de Médecine Régénérative CHU de Québec Canada
| | - André Tchernof
- Institut Universitaire de Cardiologie et de Pneumologie de Québec Canada.,Endocrinologie et Néphrologie CHU de Québec Canada.,École de Nutrition Université Laval Québec Canada
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159
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Wang B, Wang Z, de Avila JM, Zhu MJ, Zhang F, Gomez NA, Zhao L, Tian Q, Zhao J, Maricelli J, Zhang H, Rodgers BD, Du M. Moderate alcohol intake induces thermogenic brown/beige adipocyte formation via elevating retinoic acid signaling. FASEB J 2017; 31:4612-4622. [PMID: 28679528 DOI: 10.1096/fj.201700396r] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Accepted: 06/19/2017] [Indexed: 12/16/2022]
Abstract
Clinically, low and moderate alcohol intake improves human health with protection against metabolic syndromes, including type 2 diabetes; however, mechanisms that are associated with these effects remain to be elucidated. The aims of this study were to investigate the effects of moderate alcohol intake on thermogenic brown/beige adipocyte formation and glucose and lipid homeostasis, as well as the involvement of retinoic acid (RA) signaling in the entire process. C57BL6 male mice were supplemented with 8% (w/v) alcohol in water for 1 or 4 mo. Alcohol intake prevented body weight gain, induced the formation of uncoupling protein 1-positive beige adipocytes in white adipose tissue, and increased thermogenesis in mice, which is associated with decreased serum glucose and triacylglycerol levels. Mechanistically, alcohol intake increased RA levels in serum and adipose tissue, which was associated with increased expression of aldehyde dehydrogenase family 1 subfamily A1 (Aldh1a1). When RA receptor-α signaling was conditionally blocked in platelet-derived growth factor receptor-α-positive adipose progenitors, the effects of alcohol on beige adipogenesis were largely abolished. Finally, moderate alcohol prevented high-fat diet-induced obesity and metabolic dysfunction. In conclusion, moderate alcohol intake induces thermogenic brown/beige adipocyte formation and promotes glucose and lipid oxidation via elevation of RA signaling.-Wang, B., Wang, Z., de Avila, J. M., Zhu, M.-J., Zhang, F., Gomez, N. A., Zhao, L., Tian, Q., Zhao, J., Maricelli, J., Zhang, H., Rodgers, B. D., Du, M. Moderate alcohol intake induces thermogenic brown/beige adipocyte formation via elevating retinoic acid signaling.
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Affiliation(s)
- Bo Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China.,Department of Animal Sciences, Washington State University, Pullman, Washington, USA
| | - Zhixiu Wang
- Department of Animal Sciences, Washington State University, Pullman, Washington, USA
| | - Jeanene M de Avila
- Department of Animal Sciences, Washington State University, Pullman, Washington, USA
| | - Mei-Jun Zhu
- School of Food Science, Washington State University, Pullman, Washington, USA
| | - Faya Zhang
- Department of Pharmaceutical Sciences, College of Pharmacy, Washington State University, Spokane, Washington, USA
| | - Noe Alberto Gomez
- Department of Animal Sciences, Washington State University, Pullman, Washington, USA
| | - Liang Zhao
- Department of Animal Sciences, Washington State University, Pullman, Washington, USA
| | - Qiyu Tian
- Department of Animal Sciences, Washington State University, Pullman, Washington, USA
| | - Junxing Zhao
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Shanxi, China
| | - Joseph Maricelli
- School of Molecular Biosciences, Washington State University, Pullman, Washington, USA
| | - Hui Zhang
- Department of Pharmaceutical Sciences, College of Pharmacy, Washington State University, Spokane, Washington, USA
| | - Buel D Rodgers
- Department of Animal Sciences, Washington State University, Pullman, Washington, USA
| | - Min Du
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China; .,Department of Animal Sciences, Washington State University, Pullman, Washington, USA.,College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Shanxi, China
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160
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Haj-Yasein NN, Berg O, Jernerén F, Refsum H, Nebb HI, Dalen KT. Cysteine deprivation prevents induction of peroxisome proliferator-activated receptor gamma-2 and adipose differentiation of 3T3-L1 cells. Biochim Biophys Acta Mol Cell Biol Lipids 2017; 1862:623-635. [DOI: 10.1016/j.bbalip.2017.02.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 02/14/2017] [Accepted: 02/15/2017] [Indexed: 02/03/2023]
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161
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Zhang L, Virgous C, Si H. Ginseng and obesity: observations and understanding in cultured cells, animals and humans. J Nutr Biochem 2017; 44:1-10. [DOI: 10.1016/j.jnutbio.2016.11.010] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Revised: 10/28/2016] [Accepted: 11/17/2016] [Indexed: 12/18/2022]
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162
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Wang J, Hu X, Ai W, Zhang F, Yang K, Wang L, Zhu X, Gao P, Shu G, Jiang Q, Wang S. Phytol increases adipocyte number and glucose tolerance through activation of PI3K/Akt signaling pathway in mice fed high-fat and high-fructose diet. Biochem Biophys Res Commun 2017; 489:432-438. [PMID: 28571740 DOI: 10.1016/j.bbrc.2017.05.160] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Accepted: 05/27/2017] [Indexed: 01/01/2023]
Abstract
It has been shown that adipose tissue hyperplasia (increased adipocyte number or adipogenesis) has beneficial effects on metabolic health. The aim of the present study was to determine whether phytol could modulate hyperplasia/adipogenesis and glucose homeostasis, and to explore the underlying mechanisms in mice fed high-fat and high fructose diet (HFFD). Our results demonstrated that phytol administration decreased body weight gain and inguinal subcutaneous white adipose tissue (iWAT) weight. However, phytol significantly increased the adipocyte number in iWAT, with the smaller average adipocyte diameter. Meanwhile, OGTT result showed that phytol improved glucose tolerance. In accord, phytol administration markedly increased expression of marker genes associated with adipogenesis (PPARγ and C/EBPα) and glucose uptake (AS160 and GLUT4) and activated PI3K/Akt signaling pathway in mice iWAT. In agreement with the in vivo findings, the in vitro results indicated that 100 μM phytol significantly enhanced 3T3-L1 adipogenesis and glucose uptake, and activated PI3K/Akt signaling pathway. However, phytol-induced enhancement of 3T3-L1 adipognesis and glucose uptake, activation of PI3K/Akt signaling pathway, elevation of marker genes involved in adipogensis and glucose uptake, as well as translocation of GLUT4 from cytoplasm to membrane were abolished by Wortmannin, a specific PI3K/Akt inhibitor. Taken together, phytol increased adipocyte number in iWAT and improved glucose tolerance in mice fed HFFD, which was coincident with the enhanced adipogenesis and glucose uptake in 3T3-L1, and was associated with activation of PI3K/Akt signaling pathway. These data suggested the application of phytol as a potential nutritional agent to combat obesity and type 2 diabetes.
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Affiliation(s)
- Jianbing Wang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, PR China
| | - Xiaoquan Hu
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, PR China
| | - Wei Ai
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, PR China
| | - Fenglin Zhang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, PR China
| | - Kelin Yang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, PR China
| | - Lina Wang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, PR China
| | - Xiaotong Zhu
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, PR China
| | - Ping Gao
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, PR China
| | - Gang Shu
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, PR China
| | - Qingyan Jiang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, PR China.
| | - Songbo Wang
- Guangdong Provincial Key Laboratory of Animal Nutrition Control, College of Animal Science, South China Agricultural University, Guangzhou 510642, PR China; National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou 510642, PR China.
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Basoli V, Santaniello S, Cruciani S, Ginesu GC, Cossu ML, Delitala AP, Serra PA, Ventura C, Maioli M. Melatonin and Vitamin D Interfere with the Adipogenic Fate of Adipose-Derived Stem Cells. Int J Mol Sci 2017; 18:ijms18050981. [PMID: 28475114 PMCID: PMC5454894 DOI: 10.3390/ijms18050981] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 04/28/2017] [Accepted: 05/02/2017] [Indexed: 02/07/2023] Open
Abstract
Adipose-derived stem cells (ADSCs) represent one of the cellular populations resident in adipose tissue. They can be recruited under certain stimuli and committed to become preadipocytes, and then mature adipocytes. Controlling stem cell differentiation towards the adipogenic phenotype could have a great impact on future drug development aimed at counteracting fat depots. Stem cell commitment can be influenced by different molecules, such as melatonin, which we have previously shown to be an osteogenic inducer. Here, we aimed at evaluating the effects elicited by melatonin, even in the presence of vitamin D, on ADSC adipogenesis assessed in a specific medium. The transcription of specific adipogenesis orchestrating genes, such as aP2, peroxisome proliferator-activated receptor γ (PPAR-γ), and that of adipocyte-specific genes, including lipoprotein lipase (LPL) and acyl-CoA thioesterase 2 (ACOT2), was significantly inhibited in cells that had been treated in the presence of melatonin and vitamin D, alone or in combination. Protein content and lipid accumulation confirmed a reduction in adipogenesis in ADSCs that had been grown in adipogenic conditions, but in the presence of melatonin and/or vitamin D. Our findings indicate the role of melatonin and vitamin D in deciding stem cell fate, and disclose novel therapeutic approaches against fat depots.
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Affiliation(s)
- Valentina Basoli
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy.
- Laboratory of Molecular Biology and Stem Cell Engineering, National Institute of Biostructures and Biosystems, Via Massarenti, 40138 Bologna, Italy.
- Department of Biotechnology, University of Natural Resources and Life Sciences Vienna, Muthgasse 18, A-1190 Vienna, Austria.
| | - Sara Santaniello
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy.
- Laboratory of Molecular Biology and Stem Cell Engineering, National Institute of Biostructures and Biosystems, Via Massarenti, 40138 Bologna, Italy.
| | - Sara Cruciani
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy.
- Department of Biotechnology, University of Natural Resources and Life Sciences Vienna, Muthgasse 18, A-1190 Vienna, Austria.
| | - Giorgio Carlo Ginesu
- Clinical and Experimental Medicine Department, University of Sassari, Viale San Pietro 8, 07100 Sassari, Italy.
| | - Maria Laura Cossu
- Clinical and Experimental Medicine Department, University of Sassari, Viale San Pietro 8, 07100 Sassari, Italy.
| | | | - Pier Andrea Serra
- Clinical and Experimental Medicine Department, University of Sassari, Viale San Pietro 8, 07100 Sassari, Italy.
- Center for Developmental Biology and Reprogramming (CEDEBIOR), Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy.
| | - Carlo Ventura
- Laboratory of Molecular Biology and Stem Cell Engineering, National Institute of Biostructures and Biosystems, Via Massarenti, 40138 Bologna, Italy.
- Stem Wave Institute for Tissue Healing (SWITH), Gruppo VillaMaria and Ettore Sansavini Health Science Foundation, Via Provinciale per Cotignola 9, 48022 Lugo, Ravenna, Italy.
| | - Margherita Maioli
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro 43/B, 07100 Sassari, Italy.
- Laboratory of Molecular Biology and Stem Cell Engineering, National Institute of Biostructures and Biosystems, Via Massarenti, 40138 Bologna, Italy.
- Stem Wave Institute for Tissue Healing (SWITH), Gruppo VillaMaria and Ettore Sansavini Health Science Foundation, Via Provinciale per Cotignola 9, 48022 Lugo, Ravenna, Italy.
- Istituto di Ricerca Genetica e Biomedica, Consiglio Nazionale delle Ricerche (CNR), Monserrato, 09042 Cagliari, Italy.
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164
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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: 24] [Impact Index Per Article: 3.4] [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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165
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Kiehn JT, Tsang AH, Heyde I, Leinweber B, Kolbe I, Leliavski A, Oster H. Circadian Rhythms in Adipose Tissue Physiology. Compr Physiol 2017; 7:383-427. [PMID: 28333377 DOI: 10.1002/cphy.c160017] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The different types of adipose tissues fulfill a wide range of biological functions-from energy storage to hormone secretion and thermogenesis-many of which show pronounced variations over the course of the day. Such 24-h rhythms in physiology and behavior are coordinated by endogenous circadian clocks found in all tissues and cells, including adipocytes. At the molecular level, these clocks are based on interlocked transcriptional-translational feedback loops comprised of a set of clock genes/proteins. Tissue-specific clock-controlled transcriptional programs translate time-of-day information into physiologically relevant signals. In adipose tissues, clock gene control has been documented for adipocyte proliferation and differentiation, lipid metabolism as well as endocrine function and other adipose oscillations are under control of systemic signals tied to endocrine, neuronal, or behavioral rhythms. Circadian rhythm disruption, for example, by night shift work or through genetic alterations, is associated with changes in adipocyte metabolism and hormone secretion. At the same time, adipose metabolic state feeds back to central and peripheral clocks, adjusting behavioral and physiological rhythms. In this overview article, we summarize our current knowledge about the crosstalk between circadian clocks and energy metabolism with a focus on adipose physiology. © 2017 American Physiological Society. Compr Physiol 7:383-427, 2017.
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Affiliation(s)
- Jana-Thabea Kiehn
- Chronophysiology Group, Medical Department I, University of Lübeck, Lübeck, Germany
| | - Anthony H Tsang
- Chronophysiology Group, Medical Department I, University of Lübeck, Lübeck, Germany
| | - Isabel Heyde
- Chronophysiology Group, Medical Department I, University of Lübeck, Lübeck, Germany
| | - Brinja Leinweber
- Chronophysiology Group, Medical Department I, University of Lübeck, Lübeck, Germany
| | - Isa Kolbe
- Chronophysiology Group, Medical Department I, University of Lübeck, Lübeck, Germany
| | - Alexei Leliavski
- Institute of Systemic Inflammation Research, University of Lübeck, Lübeck, Germany
| | - Henrik Oster
- Chronophysiology Group, Medical Department I, University of Lübeck, Lübeck, Germany
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166
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Zhang L, Zhang L, Wang X, Si H. Anti-adipogenic Effects and Mechanisms of Ginsenoside Rg3 in Pre-adipocytes and Obese Mice. Front Pharmacol 2017; 8:113. [PMID: 28337143 PMCID: PMC5340763 DOI: 10.3389/fphar.2017.00113] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 02/23/2017] [Indexed: 12/19/2022] Open
Abstract
Red or black ginseng has been reported more powerful than white/fresh ginseng in dealing with various diseases/conditions including obesity. The major reason is that heating/steaming, the process of making red or black ginseng, produces large amount of bioactive compounds including ginsenoside Rg3 (Rg3), which are trace in fresh or white ginseng. In the present study, Rg3 was applied both in pre-adipocytes and obese mice to investigate the anti-adipogenic effects and relevant mechanisms. Our results show that Rg3 dose-dependently inhibited cell differentiation both in 3T3-L1 cells (30, 50, and 100 μM) and human primary pre-adipocytes (10, 20, and 30 μM). This inhibitory effect is accompanied by the attenuation of the expressions of adipogenic markers including peroxisome proliferator-activated receptor gamma (PPAR-γ), CCAAT/enhancer binding protein alpha (C/EBP-α), fatty acid synthase (FAS), fatty acid binding protein 4 (FABP4) and perilipin. Although dietary intake of Rg3 (0.1 mg Rg3/kg diet, 8 weeks) did not significantly affect body weight gain, fat pads and food intake as well as of PPAR-γ expression in fat tissues, we found that hepatic PPAR-γ and C/EBP-α protein expressions and hepatic glutathione reductase and glutathione S-transferase, two major antioxidants molecules were significantly reduced by Rg3. These results suggest that ginsenoside Rg3 may be a potential agent in reducing/preventing obesity.
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Affiliation(s)
| | | | | | - Hongwei Si
- Department of Family and Consumer Sciences, Tennessee State University,Nashville, TN, USA
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167
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Ambele MA, Pepper MS. Identification of transcription factors potentially involved in human adipogenesis in vitro. Mol Genet Genomic Med 2017; 5:210-222. [PMID: 28546992 PMCID: PMC5441431 DOI: 10.1002/mgg3.269] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 11/26/2016] [Accepted: 12/09/2016] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Increased adiposity in humans leads to obesity, which is a major risk factor for cardiovascular disease, type 2 diabetes, and cancer. We previously conducted an extensive unbiased in vitro transcriptomic analysis of adipogenesis, using human adipose-derived stromal cells (ASCs). Here, we have applied computational methods to these data to identify transcription factors (TFs) that constitute the upstream gene regulatory networks potentially, driving adipocyte formation in human ASCs. METHODS We used Affymetrix Transcription Analysis Console™ v3.0 for calculating differentially expressed genes. MATCH™ and F-MATCH™ algorithms for TF identification. STRING v10 to predict protein-protein interactions between TFs. RESULTS A number of TFs that were reported to have a significant role in adipogenesis, as well as novel TFs that have not previously been described in this context, were identified. Thus, 32 upstream TFs were identified, with most belonging to the C2H2-type zinc finger and HOX families, which are potentially involved in regulating most of the differentially expressed genes observed during adipocyte differentiation. Furthermore, 17 important upstream TFs were found to have increased regulatory effects on their downstream target genes and were consistently up-regulated during the differentiation process. A strong hypothetical functional interaction was observed among these TFs, which supports their common role in the downstream regulation of gene expression during adipogenesis. CONCLUSION Our results support several previous findings on TFs involved in adipogenesis and thereby validate the comprehensive and systematic in silico approach described in this study. In silico analysis also allowed for the identification of novel regulators of adipocyte differentiation.
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Affiliation(s)
- Melvin Anyasi Ambele
- Department of Immunology and Institute for Cellular and Molecular MedicineSAMRC Extramural Unit for Stem Cell Research and TherapyFaculty of Health SciencesUniversity of PretoriaPretoriaSouth Africa
| | - Michael Sean Pepper
- Department of Immunology and Institute for Cellular and Molecular MedicineSAMRC Extramural Unit for Stem Cell Research and TherapyFaculty of Health SciencesUniversity of PretoriaPretoriaSouth Africa
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168
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Kim IH, Nam TJ. Enzyme-treated Ecklonia cava extract inhibits adipogenesis through the downregulation of C/EBPα in 3T3-L1 adipocytes. Int J Mol Med 2017; 39:636-644. [PMID: 28204815 PMCID: PMC5360387 DOI: 10.3892/ijmm.2017.2869] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 01/12/2017] [Indexed: 12/17/2022] Open
Abstract
In this study, we examined the inhibitory effects of enzyme- treated Ecklonia cava (EEc) extract on the adipogenesis of 3T3-L1 adipocytes. The components of Ecklonia cava (E. cava) were first separated and purified using the digestive enzymes pectinase (Rapidase® X‑Press L) and cellulase (Rohament® CL). We found that the EEc extract contained three distinct phlorotannins: eckol, dieckol and phlorofucofuroeckol-A. Among the phlorotannins, dieckol was the most abundant in the EEc extract at 16 mg/g. Then we examined the inhibitory effects of EEc extract treatment on differentiation‑related transcription factors and on adipogenesis‑related gene expression in vitro using 3T3-L1 adipocytes. 3T3‑L1 pre‑adipocytes were used to determine the concentrations of the EEc extract and Garcinia cambogia (Gar) extract that did not result in cytotoxicity. Glucose utilization and triglyceride (TG) accumulation in the EEc‑treated adipocytes were similarly inhibited by 50 µg/ml EEc and 200 µg/ml Gar, and these results were confirmed by Oil Red O staining. Protein expression of adipogenesis differentiation‑related transcription factors following treatment with the EEc extract was also examined. Only the expression of CCAAT/enhancer‑binding protein (C/EBP)α was decreased, while there was no effect on the expression of C/EBPβ, C/EBPδ, and peroxisome proliferator‑activated receptor γ (PPARγ). Treatment with the EEc extract decreased the expression levels of adipogenesis‑related genes, in particular sterol regulatory element binding protein‑1c (SREBP‑1c), adipocyte fatty acid binding protein (A‑FABP), fatty acid synthase (FAS) and adiponectin. These results suggest that EEc extract treatment has an inhibitory effect on adipogenesis, specifically by affecting the activation of the C/EBPα signaling pathway and the resulting adipogenesis-related gene expression.
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Affiliation(s)
- In-Hye Kim
- Institute of Fisheries Science, Pukyong National University, Busan 619-911
| | - Taek-Jeong Nam
- Institute of Fisheries Science, Pukyong National University, Busan 619-911
- Department of Food and Life Science, Pukyong National University, Busan 608-737, Republic of Korea
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169
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Trohatou O, Zagoura D, Orfanos NK, Pappa KI, Marinos E, Anagnou NP, Roubelakis MG. miR-26a Mediates Adipogenesis of Amniotic Fluid Mesenchymal Stem/Stromal Cells via PTEN, Cyclin E1, and CDK6. Stem Cells Dev 2017; 26:482-494. [PMID: 28068868 DOI: 10.1089/scd.2016.0203] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Recent findings indicate that microRNAs (miRNAs) are critical for the regulatory network of adipogenesis in human mesenchymal stem/stromal cells (MSCs). Fetal MSCs derived from amniotic fluid (AF-MSCs) represent a population of multipotent stem cells characterized by a wide range of differentiation properties that can be applied in cell-based therapies. In this study, miRNA microarray analysis was performed to assess miRNA expression in terminal differentiated AF-MSCs into adipocyte-like cells (AL cells). MiR-26a was identified in high expression levels in AL cells indicating a critical role in the process of adipogenesis. Overexpression of miR-26a in AF-MSCs led to significant induction of their adipogenic differentiation properties that were altered after miR-26a inhibition. We have demonstrated that miR-26a regulates adipogenesis through direct inhibition of PTEN, which in turn promotes activation of Akt pathway. Also, miR-26a modulates cell cycle during adipogenesis by interacting with Cyclin E1 and CDK6. These results point to the regulatory role of miR-26a and its target genes PTEN, Cyclin E1, and CDK6 in adipogenic differentiation of AF-MSCs, providing a basis for understanding the mechanisms of fat cell development and obesity.
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Affiliation(s)
- Ourania Trohatou
- 1 Laboratory of Biology, School of Medicine, National and Kapodistrian University of Athens , Athens, Greece .,2 Cell and Gene Therapy Laboratory, Centre of Basic Research II, Biomedical Research Foundation of the Academy of Athens (BRFAA) , Athens, Greece
| | - Dimitra Zagoura
- 1 Laboratory of Biology, School of Medicine, National and Kapodistrian University of Athens , Athens, Greece .,2 Cell and Gene Therapy Laboratory, Centre of Basic Research II, Biomedical Research Foundation of the Academy of Athens (BRFAA) , Athens, Greece
| | - Nikos K Orfanos
- 2 Cell and Gene Therapy Laboratory, Centre of Basic Research II, Biomedical Research Foundation of the Academy of Athens (BRFAA) , Athens, Greece
| | - Kalliopi I Pappa
- 3 First Department of Obstetrics and Gynecology, National and Kapodistrian University of Athens , Athens, Greece
| | - Evangelos Marinos
- 1 Laboratory of Biology, School of Medicine, National and Kapodistrian University of Athens , Athens, Greece
| | - Nicholas P Anagnou
- 1 Laboratory of Biology, School of Medicine, National and Kapodistrian University of Athens , Athens, Greece .,2 Cell and Gene Therapy Laboratory, Centre of Basic Research II, Biomedical Research Foundation of the Academy of Athens (BRFAA) , Athens, Greece
| | - Maria G Roubelakis
- 1 Laboratory of Biology, School of Medicine, National and Kapodistrian University of Athens , Athens, Greece .,2 Cell and Gene Therapy Laboratory, Centre of Basic Research II, Biomedical Research Foundation of the Academy of Athens (BRFAA) , Athens, Greece
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170
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Baskan O, Mese G, Ozcivici E. Low-intensity vibrations normalize adipogenesis-induced morphological and molecular changes of adult mesenchymal stem cells. Proc Inst Mech Eng H 2017; 231:160-168. [PMID: 28068880 DOI: 10.1177/0954411916687338] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Bone marrow mesenchymal stem cells that are committed to adipogenesis were exposed daily to high-frequency low-intensity mechanical vibrations to understand molecular, morphological and ultrastructural adaptations to mechanical signals during adipogenesis. D1-ORL-UVA mouse bone marrow mesenchymal stem cells were cultured with either growth or adipogenic medium for 1 week. Low-intensity vibration signals (15 min/day, 90 Hz, 0.1 g) were applied to one group of adipogenic cells, while the other adipogenic group served as a sham control. Cellular viability, lipid accumulation, ultrastructure and morphology were determined with MTT, Oil-Red-O staining, phalloidin staining and atomic force microscopy. Semiquantitative reverse transcription polymerase chain reaction showed expression profile of the genes responsible for adipogenesis and ultrastructure of cells. Low-intensity vibration signals increased viability of the cells in adipogenic culture that was reduced significantly compared to quiescent controls. Low-intensity vibration signals also normalized the effects of adipogenic condition on cell morphology, including area, perimeter, circularization and actin cytoskeleton. Furthermore, low-intensity vibration signals reduced the expression of some adipogenic markers significantly. Mesenchymal stem cells are sensitive and responsive to mechanical loads, but debilitating conditions such as aging or obesity may steer mesenchymal stem cells toward adipogenesis. Here, daily application of low-intensity vibration signals partially neutralized the effects of adipogenic induction on mesenchymal stem cells, suggesting that these signals may provide an alternative and/or complementary option to reduce fat deposition.
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Affiliation(s)
- Oznur Baskan
- 1 Department of Bioengineering, Izmir Institute of Technology, Izmir, Turkey
| | - Gulistan Mese
- 2 Department of Molecular Biology and Genetics, Izmir Institute of Technology, Izmir, Turkey
| | - Engin Ozcivici
- 1 Department of Bioengineering, Izmir Institute of Technology, Izmir, Turkey
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171
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Stafeev IS, Vorotnikov AV, Ratner EI, Menshikov MY, Parfyonova YV. Latent Inflammation and Insulin Resistance in Adipose Tissue. Int J Endocrinol 2017; 2017:5076732. [PMID: 28912810 PMCID: PMC5585607 DOI: 10.1155/2017/5076732] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 07/17/2017] [Indexed: 02/06/2023] Open
Abstract
Obesity is a growing problem in modern society and medicine. It closely associates with metabolic disorders such as type 2 diabetes mellitus (T2DM) and hepatic and cardiovascular diseases such as nonalcoholic fatty liver disease, atherosclerosis, myocarditis, and hypertension. Obesity is often associated with latent inflammation; however, the link between inflammation, obesity, T2DM, and cardiovascular diseases is still poorly understood. Insulin resistance is the earliest feature of metabolic disorders. It mostly develops as a result of dysregulated insulin signaling in insulin-sensitive cells, as compared to inactivating mutations in insulin receptor or signaling proteins that occur relatively rare. Here, we argue that inflammatory signaling provides a link between latent inflammation, obesity, insulin resistance, and metabolic disorders. We further hypothesize that insulin-activated PI3-kinase pathway and inflammatory signaling mediated by several IκB kinases may constitute negative feedback leading to insulin resistance at least in the fat tissue. Finally, we discuss perspectives for anti-inflammatory therapies in treating the metabolic diseases.
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Affiliation(s)
- I. S. Stafeev
- Russian Cardiology Research and Production Centre, Moscow 121552, Russia
- Faculty of Basic Medicine, M.V. Lomonosov Moscow State University, Moscow 119192, Russia
- *I. S. Stafeev:
| | - A. V. Vorotnikov
- Russian Cardiology Research and Production Centre, Moscow 121552, Russia
- M.V. Lomonosov Moscow State University Medical Center, Moscow 119192, Russia
| | - E. I. Ratner
- Russian Cardiology Research and Production Centre, Moscow 121552, Russia
- Endocrinology Research Centre, Moscow 117031, Russia
| | - M. Y. Menshikov
- Russian Cardiology Research and Production Centre, Moscow 121552, Russia
| | - Ye. V. Parfyonova
- Russian Cardiology Research and Production Centre, Moscow 121552, Russia
- Faculty of Basic Medicine, M.V. Lomonosov Moscow State University, Moscow 119192, Russia
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172
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Ishibashi K, Takeda Y, Nakatani E, Sugawara K, Imai R, Sekiguchi M, Takahama R, Ohkura N, Atsumi GI. Activation of PPARγ at an Early Stage of Differentiation Enhances Adipocyte Differentiation of MEFs Derived from Type II Diabetic TSOD Mice and Alters Lipid Droplet Morphology. Biol Pharm Bull 2017; 40:852-859. [DOI: 10.1248/bpb.b17-00030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Kenichi Ishibashi
- Department of Molecular Physiology and Pathology, School of Pharma-Sciences, Teikyo University
| | - Yoshihiro Takeda
- Department of Molecular Physiology and Pathology, School of Pharma-Sciences, Teikyo University
| | - Eriko Nakatani
- Department of Molecular Physiology and Pathology, School of Pharma-Sciences, Teikyo University
| | - Kana Sugawara
- Department of Molecular Physiology and Pathology, School of Pharma-Sciences, Teikyo University
| | - Ryo Imai
- Department of Molecular Physiology and Pathology, School of Pharma-Sciences, Teikyo University
| | - Mayu Sekiguchi
- Department of Molecular Physiology and Pathology, School of Pharma-Sciences, Teikyo University
| | - Risa Takahama
- Department of Molecular Physiology and Pathology, School of Pharma-Sciences, Teikyo University
| | - Naoki Ohkura
- Department of Molecular Physiology and Pathology, School of Pharma-Sciences, Teikyo University
| | - Gen-ichi Atsumi
- Department of Molecular Physiology and Pathology, School of Pharma-Sciences, Teikyo University
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Caliskan OS, Sardan Ekiz M, Tekinay AB, Guler MO. Spatial Organization of Functional Groups on Bioactive Supramolecular Glycopeptide Nanofibers for Differentiation of Mesenchymal Stem Cells (MSCs) to Brown Adipogenesis. Bioconjug Chem 2016; 28:740-750. [DOI: 10.1021/acs.bioconjchem.6b00632] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ozum S. Caliskan
- Institute of Materials Science
and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, 06800 Ankara, Turkey
| | - Melis Sardan Ekiz
- Institute of Materials Science
and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, 06800 Ankara, Turkey
| | - Ayse B. Tekinay
- Institute of Materials Science
and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, 06800 Ankara, Turkey
| | - Mustafa O. Guler
- Institute of Materials Science
and Nanotechnology, National Nanotechnology Research Center (UNAM), Bilkent University, 06800 Ankara, Turkey
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174
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Lee YJ, Seo MJ, Lee OH, Kim KJ, Lee BY. Hesperetin inhibits lipid accumulation and ROS production during adipocyte differentiation in 3T3-L1 cells. J Food Biochem 2016. [DOI: 10.1111/jfbc.12348] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Yeon-Joo Lee
- Department of Food Science and Biotechnology College of Life Science; CHA University; Seongnam Kyonggi 463-400 South Korea
| | - Min-Jung Seo
- Molecular Imaging Research Center; Korea Institute of Radiological and Medical Sciences; Seoul South Korea
| | - Ok-Hwan Lee
- Department of Food Science and Biotechnology; Kangwon National University; Chuncheon 200-701 South Korea
| | - Kui-Jin Kim
- Department of Food Science and Biotechnology College of Life Science; CHA University; Seongnam Kyonggi 463-400 South Korea
| | - Boo-Yong Lee
- Department of Food Science and Biotechnology College of Life Science; CHA University; Seongnam Kyonggi 463-400 South Korea
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175
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Kristóf E, Doan-Xuan QM, Sárvári AK, Klusóczki Á, Fischer-Posovszky P, Wabitsch M, Bacso Z, Bai P, Balajthy Z, Fésüs L. Clozapine modifies the differentiation program of human adipocytes inducing browning. Transl Psychiatry 2016; 6:e963. [PMID: 27898069 PMCID: PMC5290354 DOI: 10.1038/tp.2016.230] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 10/15/2016] [Accepted: 10/17/2016] [Indexed: 01/29/2023] Open
Abstract
Administration of second-generation antipsychotic drugs (SGAs) often leads to weight gain and consequent cardio-metabolic side effects. We observed that clozapine but not six other antipsychotic drugs reprogrammed the gene expression pattern of differentiating human adipocytes ex vivo, leading to an elevated expression of the browning marker gene UCP1, more and smaller lipid droplets and more mitochondrial DNA than in the untreated white adipocytes. Laser scanning cytometry showed that up to 40% of the differentiating single primary and Simpson-Golabi-Behmel syndrome (SGBS) adipocytes had the characteristic morphological features of browning cells. Furthermore, clozapine significantly upregulated ELOVL3, CIDEA, CYC1, PGC1A and TBX1 genes but not ZIC1 suggesting induction of the beige-like and not the classical brown phenotype. When we tested whether browning induced by clozapine can be explained by its known pharmacological effect of antagonizing serotonin (5HT) receptors, it was found that browning cells expressed 5HT receptors 2A, 1D, 7 and the upregulation of browning markers was diminished in the presence of exogenous 5HT. Undifferentiated progenitors or completely differentiated beige or white adipocytes did not respond to clozapine administration. The clozapine-induced beige cells displayed increased basal and oligomycin-inhibited (proton leak) oxygen consumption, but these cells showed a lower response to cAMP stimulus as compared with control beige adipocytes indicating that they are less capable to respond to natural thermogenic anti-obesity cues. Our data altogether suggest that novel pharmacological stimulation of these masked beige adipocytes can be a future therapeutic target for the treatment of SGA-induced weight gain.
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Affiliation(s)
- E Kristóf
- Department of Biochemistry and Molecular Biology, University of Debrecen, Debrecen, Hungary
| | - Q-M Doan-Xuan
- Department of Biophysics and Cell Biology, University of Debrecen, Debrecen, Hungary
| | - A K Sárvári
- Department of Biochemistry and Molecular Biology, University of Debrecen, Debrecen, Hungary
| | - Á Klusóczki
- Department of Biochemistry and Molecular Biology, University of Debrecen, Debrecen, Hungary
| | - P Fischer-Posovszky
- Division of Pediatric Endocrinology and Diabetes, University Medical Center Ulm, Ulm, Germany
| | - M Wabitsch
- Division of Pediatric Endocrinology and Diabetes, University Medical Center Ulm, Ulm, Germany
| | - Z Bacso
- Department of Biophysics and Cell Biology, University of Debrecen, Debrecen, Hungary
| | - P Bai
- MTA-DE Lendület Laboratory of Cellular Metabolism, Debrecen, Hungary,Research Center for Molecular Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary,Department of Medical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Z Balajthy
- Department of Biochemistry and Molecular Biology, University of Debrecen, Debrecen, Hungary
| | - L Fésüs
- Department of Biochemistry and Molecular Biology, University of Debrecen, Debrecen, Hungary,MTA-DE Stem Cells, Apoptosis and Genomics Research Group of the Hungarian Academy of Sciences, Debrecen, Hungary,Department of Biochemistry and Molecular Biology, University of Debrecen, Life Science Building, H-4032 Debrecen, Egyetem tér 1, Hungary. E-mail:
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176
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Das J, Choi YJ, Yasuda H, Han JW, Park C, Song H, Bae H, Kim JH. Efficient delivery of C/EBP beta gene into human mesenchymal stem cells via polyethylenimine-coated gold nanoparticles enhances adipogenic differentiation. Sci Rep 2016; 6:33784. [PMID: 27677463 PMCID: PMC5039411 DOI: 10.1038/srep33784] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 09/02/2016] [Indexed: 01/04/2023] Open
Abstract
The controlled differentiation of stem cells via the delivery of specific genes encoding appropriate differentiation factors may provide useful models for regenerative medicine and aid in developing therapies for human patients. However, the majority of non-viral vectors are not efficient enough to manipulate difficult-to-transfect adult human stem cells in vitro. Herein, we report the first use of 25 kDa branched polyethylenimine-entrapped gold nanoparticles (AuPEINPs) and covalently bound polyethylenimine-gold nanoparticles (AuMUAPEINPs) as carriers for efficient gene delivery into human mesenchymal stem cells (hMSCs). We determined a functional application of these nanoparticles by transfecting hMSCs with the C/EBP beta gene, fused to EGFP, to induce adipogenic differentiation. Transfection efficacy with AuPEINPs and AuMUAPEINPs was 52.3% and 40.7%, respectively, which was 2.48 and 1.93 times higher than that by using Lipofectamine 2000. Luciferase assay results also demonstrated improved gene transfection efficiency of AuPEINPs/AuMUAPEINPs over Lipofectamine 2000 and polyethylenimine. Overexpression of exogenous C/EBP beta significantly enhanced adipogenesis in hMSCs as indicated by both of Oil Red O staining and mRNA expression analyses. Nanoparticle/DNA complexes exhibited favorable cytocompatibility in hMSCs. Taken together, AuPEINPs and AuMUAPEINPs potentially represent safe and highly efficient vehicles for gene delivery to control hMSC differentiation and for therapeutic gene delivery applications.
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Affiliation(s)
- Joydeep Das
- Dept. of Stem Cell and Regenerative Biology, Humanized Pig Research Center (SRC), Konkuk University, Seoul 143-701, South Korea
| | - Yun-Jung Choi
- Dept. of Stem Cell and Regenerative Biology, Humanized Pig Research Center (SRC), Konkuk University, Seoul 143-701, South Korea
| | - Hideyo Yasuda
- Dept. of Stem Cell and Regenerative Biology, Humanized Pig Research Center (SRC), Konkuk University, Seoul 143-701, South Korea
| | - Jae Woong Han
- Dept. of Stem Cell and Regenerative Biology, Humanized Pig Research Center (SRC), Konkuk University, Seoul 143-701, South Korea
| | - Chankyu Park
- Dept. of Stem Cell and Regenerative Biology, Humanized Pig Research Center (SRC), Konkuk University, Seoul 143-701, South Korea
| | - Hyuk Song
- Dept. of Stem Cell and Regenerative Biology, Humanized Pig Research Center (SRC), Konkuk University, Seoul 143-701, South Korea
| | - Hojae Bae
- Dept. of Bioindustrial Technologies, College of Animal Bioscience and Technology, Konkuk University, Seoul 143-701, South Korea
| | - Jin-Hoi Kim
- Dept. of Stem Cell and Regenerative Biology, Humanized Pig Research Center (SRC), Konkuk University, Seoul 143-701, South Korea
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177
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Drehmer DL, de Aguiar AM, Brandt AP, Petiz L, Cadena SMSC, Rebelatto CK, Brofman PRS, Filipak Neto F, Dallagiovanna B, Abud APR. Metabolic switches during the first steps of adipogenic stem cells differentiation. Stem Cell Res 2016; 17:413-421. [PMID: 27653462 DOI: 10.1016/j.scr.2016.09.001] [Citation(s) in RCA: 274] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 08/30/2016] [Accepted: 09/02/2016] [Indexed: 10/21/2022] Open
Abstract
The understanding of metabolism during cell proliferation and commitment provides a greater insight into the basic biology of cells, allowing future applications. Here we evaluated the energy and oxidative changes during the early adipogenic differentiation of human adipose tissue-derived stromal cells (hASCs). hASCs were maintained under differentiation conditions during 3 and 7days. Oxygen consumption, mitochondrial mass and membrane potential, reactive oxygen species (ROS) generation, superoxide dismutase (SOD) and catalase activities, non-protein thiols (NPT) concentration and lipid peroxidation were analyzed. We observed that 7days of adipogenic induction are required to stimulate cells to consume more oxygen and increase mitochondrial activity, indicating organelle maturation and a transition from glycolytic to oxidative energy metabolism. ROS production was only increased after 3days and may be involved in the differentiation commitment. ROS source was not only the mitochondria and we suggest that NOX proteins are related to ROS generation and therefore adipogenic commitment. ROS production did not change after 7days, but an increased activity of catalase and NPT concentration as well as a decreased lipid peroxidation were observed. Thus, a short period of differentiation induction is able to change the energetic and oxidative metabolic profile of hASCs and stimulate cytoprotection processes.
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Affiliation(s)
- Daiana Leila Drehmer
- Laboratório de Biologia Básica de Células Tronco, Instituto Carlos Chagas, Fiocruz, Curitiba, Paraná, Brazil
| | - Alessandra Melo de Aguiar
- Laboratório de Biologia Básica de Células Tronco, Instituto Carlos Chagas, Fiocruz, Curitiba, Paraná, Brazil
| | | | - Lyvia Petiz
- Universidade Federal do Paraná, Paraná, Paraná, Brazil
| | | | | | - Paulo R S Brofman
- Pontifícia Universidade Católica do Paraná, Curitiba, Paraná, Brazil
| | | | - Bruno Dallagiovanna
- Laboratório de Biologia Básica de Células Tronco, Instituto Carlos Chagas, Fiocruz, Curitiba, Paraná, Brazil
| | - Ana Paula Ressetti Abud
- Laboratório de Biologia Básica de Células Tronco, Instituto Carlos Chagas, Fiocruz, Curitiba, Paraná, Brazil.
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178
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Bone marrow mesenchymal stem cells of the intrauterine growth-restricted rat offspring exhibit enhanced adipogenic phenotype. Int J Obes (Lond) 2016; 40:1768-1775. [PMID: 27599633 PMCID: PMC5113998 DOI: 10.1038/ijo.2016.157] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 07/07/2016] [Accepted: 07/22/2016] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Although intrauterine nutritional stress is known to result in offspring obesity and the metabolic phenotype, the underlying cellular/molecular mechanisms remain incompletely understood. We tested the hypothesis that compared with the controls, the bone marrow-derived mesenchymal stem cells (BMSCs) of the intrauterine growth-restricted (IUGR) offspring exhibit a more adipogenic phenotype. METHODS A well-established rat model of maternal food restriction (MFR), that is, 50% global caloric restriction during the later-half of pregnancy and ad libitum diet following birth that is known to result in an obese offspring with a metabolic phenotype was used. BMSCs at 3 weeks of age were isolated, and then molecularly and functionally profiled. RESULTS BMSCs of the intrauterine nutritionally-restricted offspring demonstrated an increased proliferation and an enhanced adipogenic molecular profile at miRNA, mRNA and protein levels, with an overall up-regulated PPARγ (miR-30d, miR-103, PPARγ, C/EPBα, ADRP, LPL, SREBP1), but down-regulated Wnt (LRP5, LEF-1, β-catenin, ZNF521 and RUNX2) signaling profile. Following adipogenic induction, compared with the control BMSCs, the already up-regulated adipogenic profile of the MFR BMSCs, showed a further increased adipogenic response. CONCLUSIONS Markedly enhanced adipogenic molecular profile and increased cell proliferation of MFR BMSCs suggest a possible novel cellular/mechanistic link between the intrauterine nutritional stress and offspring metabolic phenotype. This provides new potential predictive and therapeutic targets against these conditions in the IUGR offspring.
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179
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Stafeev IS, Menshikov MY, Tsokolaeva ZI, Shestakova MV, Parfyonova YV. Molecular Mechanisms of Latent Inflammation in Metabolic Syndrome. Possible Role of Sirtuins and Peroxisome Proliferator-Activated Receptor Type γ. BIOCHEMISTRY (MOSCOW) 2016; 80:1217-26. [PMID: 26567565 DOI: 10.1134/s0006297915100028] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The problem of metabolic syndrome is one of the most important in medicine today. The main hazard of metabolic syndrome is development of latent inflammation in adipose tissue, which promotes atherosclerosis, non-alcoholic fatty liver disease, myocarditis, and a number of other illnesses. Therefore, understanding of molecular mechanisms of latent inflammation in adipose tissue is very important for treatment of metabolic syndrome. Three main components that arise during hypertrophy and hyperplasia of adipocytes underlie such inflammation: endoplasmic reticulum stress, oxidative stress, and hypoxia. Each of these components mediates activation in different ways of the key factor of inflammation - NF-κB. For metabolic syndrome therapy, it is suggested to influence a number of inflammatory signaling components by activating other cell factors to suppress development of inflammation. Such potential factors are peroxisome proliferator-activated receptors type γ that suppress transcription factor NF-κB through direct contact or via kinase of a NF-κB inhibitor (IKK), and also the antiinflammatory transcription factor AP-1. Other possible targets are type 3 NAD+-dependent histone deacetylases (sirtuins). There are mutually antagonistic relationships between NF-κB and sirtuin type 1 that prevent development of inflammation in metabolic syndrome. Moreover, sirtuin type 1 inhibits the antiinflammatory transcription factor AP-1. Study of the influence of these factors on the relationship between macrophages and adipocytes, macrophages, and adipose tissue-derived stromal cells can help to understand mechanisms of signaling and development of latent inflammation in metabolic syndrome.
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Affiliation(s)
- I S Stafeev
- Institute of Experimental Cardiology, Russian Cardiological Research and Production Complex, Moscow, 121552, Russia.
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180
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Mechanisms underlying the association between obesity and Hodgkin lymphoma. Tumour Biol 2016; 37:13005-13016. [PMID: 27465553 DOI: 10.1007/s13277-016-5198-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 07/13/2016] [Indexed: 10/21/2022] Open
Abstract
A solid body of knowledge indicates that overweight and obese subjects are prone to develop cancer, aggressive disease, and death more than their lean counterparts. While obesity has been causally associated with various cancers, only a limited number of studies beheld the link with classical Hodgkin lymphoma (HL). Contemporary meta-analysis and prospective studies confirmed the association of body mass index with HL. Besides epidemiological evidence, excess adiposity is known to influence tumor behavior through adipokines, adipose-derived stem cell migration, and metabolism regulation, and by modulating immunoinflammatory response. Nevertheless, the obesity paradox has been described in few cancers. Considering that adipose tissue is an immunomodulatory organ, and that inflammation is the cornerstone of HL pathophysiology, the rationale for being causally related due to endocrine/paracrine interactions cannot be negligible. In this hypothesis-generating review, we explore the biologically plausible links between excess adiposity and HL in light of recent basic and clinical data, in order to create a basis for understanding the underlying mechanisms and foster applied research. The establishment of an association of excess adiposity with HL will determine public health preventive measures to fight obesity and eventually novel therapeutic approaches in HL patients.
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181
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Seo MJ, Seo YJ, Pan CH, Lee OH, Kim KJ, Lee BY. Fucoxanthin Suppresses Lipid Accumulation and ROS Production During Differentiation in 3T3-L1 Adipocytes. Phytother Res 2016; 30:1802-1808. [DOI: 10.1002/ptr.5683] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 06/08/2016] [Accepted: 06/21/2016] [Indexed: 12/13/2022]
Affiliation(s)
- Min-Jung Seo
- Department of Food Science and Biotechnology; CHA University; Seongnam Korea
| | - Young-Jin Seo
- Department of Food Science and Biotechnology; CHA University; Seongnam Korea
| | - Cheol-Ho Pan
- Laboratory of Biomodulation, Natural Products Research Center, Korea Institute of Science and Technology (KIST); Gangneung 25451 Korea
| | - Ok-Hwan Lee
- Department of Food Science and Biotechnology; Kangwon National University; Chuncheon South Korea
| | - Kui-Jin Kim
- Department of Food Science and Biotechnology; CHA University; Seongnam Korea
| | - Boo-Yong Lee
- Department of Food Science and Biotechnology; CHA University; Seongnam Korea
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182
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Green AJ, Graham JL, Gonzalez EA, La Frano MR, Petropoulou SSE, Park JS, Newman JW, Stanhope KL, Havel PJ, La Merrill MA. Perinatal triphenyl phosphate exposure accelerates type 2 diabetes onset and increases adipose accumulation in UCD-type 2 diabetes mellitus rats. Reprod Toxicol 2016; 68:119-129. [PMID: 27421578 DOI: 10.1016/j.reprotox.2016.07.009] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 06/21/2016] [Accepted: 07/09/2016] [Indexed: 01/01/2023]
Abstract
Triphenyl phosphate (TPhP) is a flame retardant additive frequently found in consumer products and household dust. We administered 170μg of TPhP in maternal food from gestational day 8.5 to weaning and evaluated metabolic phenotypes of 3.5 month old male and female rats, and weight-matched males up to 6 months, to assess the development of obesity and type 2 diabetes mellitus (T2DM), respectively. Perinatal TPhP exposure increased body and fat mass in 3.5 month old male and female rats, while leptin and cumulative energy intake were elevated in males and females, respectively. Independent of body mass, perinatal TPhP exposure accelerated T2DM onset in males and increased plasma non-esterified- fasting fatty acids. These observations suggest that perinatal exposure to TPhP exacerbates the development of obesity in male and female UCDavis-T2DM rats and accelerates T2DM onset in male UCD-T2DM rats.
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Affiliation(s)
- Adrian J Green
- Department of Environmental Toxicology, University of California at Davis, Davis, CA, USA
| | - James L Graham
- Department of Nutrition, University of California at Davis, Davis, CA, USA
| | - Eduardo A Gonzalez
- Department of Environmental Toxicology, University of California at Davis, Davis, CA, USA
| | - Michael R La Frano
- Department of Nutrition, University of California at Davis, Davis, CA, USA; West Coast Metabolomics Center, University of California at Davis, Davis, CA, USA
| | | | - June-Soo Park
- Department of Toxic Substances Control, California Environmental Protection Agency, Berkeley, CA, USA
| | - John W Newman
- Department of Nutrition, University of California at Davis, Davis, CA, USA; West Coast Metabolomics Center, University of California at Davis, Davis, CA, USA; Obesity and Metabolism Research Unit, USDA-ARS Western Human Nutrition Research Center, Davis, CA, USA
| | - Kimber L Stanhope
- Department of Nutrition, University of California at Davis, Davis, CA, USA; Department of Molecular Biosciences, School of Veterinary Medicine, University of California at Davis, Davis, CA, USA
| | - Peter J Havel
- Department of Nutrition, University of California at Davis, Davis, CA, USA; Department of Molecular Biosciences, School of Veterinary Medicine, University of California at Davis, Davis, CA, USA
| | - Michele A La Merrill
- Department of Environmental Toxicology, University of California at Davis, Davis, CA, USA.
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183
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Tao J, Zheng L, Meng M, Li Y, Lu Z. Shp2 suppresses the adipogenic differentiation of preadipocyte 3T3-L1 cells at an early stage. Cell Death Discov 2016; 2:16051. [PMID: 27551539 PMCID: PMC4979423 DOI: 10.1038/cddiscovery.2016.51] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 05/25/2016] [Accepted: 06/05/2016] [Indexed: 11/10/2022] Open
Abstract
Tyrosine phosphatase protein Shp2 is a potential therapeutic target for obesity. However, the mechanism of Shp2 during adipogenesis is not fully understood. The present study investigated the role of Shp2 in the terminal differentiation of preadipocytes. The results showed that Shp2 suppressed adipocyte differentiation in 3T3-L1 cells; overexpression of Shp2 reduced lipid droplet production in 3T3-L1 cells, whereas Shp2 knockdown increased lipid droplet production in 3T3-L1 cells. Furthermore, inhibition of Shp2 activity also enhanced adipocyte differentiation. Interestingly, Shp2 expression was specifically decreased early during differentiation in response to stimulation with the dexamethasone–methylisobutylxanthine–insulin (DMI) hormone cocktail. During the first 2 days of differentiation, Shp2 overexpression impaired the DMI-induced phosphorylation of signal transducer and activator of transcription 3 (STAT3) in 3T3-L1 cells and blocked the peak expression of CCAAT/enhancer-binding proteins β and δ during preadipocyte differentiation. In conclusion, Shp2 downregulated the early stages of hormone-induced differentiation of 3T3-L1 cells and inhibited the expression of the first wave of transcription factors by suppressing the DMI-induced STAT3 signaling pathway. These discoveries point to a novel role of Shp2 during adipogenesis and support the hypothesis that Shp2 could be a therapeutic target for the control of obesity.
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Affiliation(s)
- J Tao
- School of Pharmaceutical Sciences, State Key Laboratory of Cellular Stress Biology, Xiamen University , Xiamen, Fujian, China
| | - L Zheng
- School of Pharmaceutical Sciences, State Key Laboratory of Cellular Stress Biology, Xiamen University , Xiamen, Fujian, China
| | - M Meng
- School of Pharmaceutical Sciences, State Key Laboratory of Cellular Stress Biology, Xiamen University , Xiamen, Fujian, China
| | - Y Li
- School of Pharmaceutical Sciences, State Key Laboratory of Cellular Stress Biology, Xiamen University , Xiamen, Fujian, China
| | - Z Lu
- School of Pharmaceutical Sciences, State Key Laboratory of Cellular Stress Biology, Xiamen University , Xiamen, Fujian, China
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184
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Simann M, Le Blanc S, Schneider V, Zehe V, Lüdemann M, Schütze N, Jakob F, Schilling T. Canonical FGFs Prevent Osteogenic Lineage Commitment and Differentiation of Human Bone Marrow Stromal Cells Via ERK1/2 Signaling. J Cell Biochem 2016; 118:263-275. [PMID: 27305863 DOI: 10.1002/jcb.25631] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Accepted: 06/14/2016] [Indexed: 12/21/2022]
Abstract
Controlling the adipo-osteogenic lineage decision of trabecular human bone marrow stromal cells (hBMSCs) in favor of osteogenesis represents a promising approach for osteoporosis therapy and prevention. Previously, Fibroblast Growth Factor 1 (FGF1) and its subfamily member FGF2 were scored as leading candidates to exercise control over skeletal precursor commitment and lineage decision albeit literature results are highly inconsistent. We show here that FGF1 and 2 strongly prevent the osteogenic commitment and differentiation of hBMSCs. Mineralization of extracellular matrix (ECM) and mRNA expression of osteogenic marker genes Alkaline Phosphatase (ALP), Collagen 1A1 (COL1A1), and Integrin-Binding Sialoprotein (IBSP) were significantly reduced. Furthermore, master regulators of osteogenic commitment like Runt-Related Transcription Factor 2 (RUNX2) and Bone Morphogenetic Protein 4 (BMP4) were downregulated. When administered under adipogenic culture conditions, canonical FGFs did not support osteogenic marker expression. Moreover despite the presence of osteogenic differentiation factors, FGFs even disabled the pro-osteogenic lineage decision of pre-differentiated adipocytic cells. In contrast to FGF Receptor 2 (FGFR2), FGFR1 was stably expressed throughout osteogenic and adipogenic differentiation and FGF addition. Moreover, FGFR1 and Extracellular Signal-Regulated Kinases 1 and 2 (ERK1/2) were found to be responsible for underlying signal transduction using respective inhibitors. Taken together, we present new findings indicating that canonical FGFR-ERK1/2 signaling entrapped hBMSCs in a pre-committed state and arrested further maturation of committed precursors. Our results might aid in unraveling and controlling check points relevant for ageing-associated aberrant adipogenesis with consequences for the treatment of degenerative diseases such as osteoporosis and for skeletal tissue engineering strategies. J. Cell. Biochem. 118: 263-275, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Meike Simann
- Department of Orthopedics, Orthopedic Center for Musculoskeletal Research, University of Würzburg, Würzburg, Germany
| | - Solange Le Blanc
- Department of Orthopedics, Orthopedic Center for Musculoskeletal Research, University of Würzburg, Würzburg, Germany
| | - Verena Schneider
- Chair Tissue Engineering & Regenerative Medicine, University Hospital Würzburg, Würzburg, Germany
| | - Viola Zehe
- Department of Orthopedics, Orthopedic Center for Musculoskeletal Research, University of Würzburg, Würzburg, Germany
| | - Martin Lüdemann
- Orthopedic Department König-Ludwig-Haus, Center for Musculoskeletal Research, University of Würzburg, Würzburg, Germany
| | - Norbert Schütze
- Department of Orthopedics, Orthopedic Center for Musculoskeletal Research, University of Würzburg, Würzburg, Germany
| | - Franz Jakob
- Department of Orthopedics, Orthopedic Center for Musculoskeletal Research, University of Würzburg, Würzburg, Germany
| | - Tatjana Schilling
- Department of Orthopedics, Orthopedic Center for Musculoskeletal Research, University of Würzburg, Würzburg, Germany
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185
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Colitti M, Stefanon B. Different anti-adipogenic effects of bio-compounds on primary visceral pre-adipocytes and adipocytes. EXCLI JOURNAL 2016; 15:362-77. [PMID: 27540349 PMCID: PMC4983867 DOI: 10.17179/excli2016-267] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Accepted: 06/08/2016] [Indexed: 01/03/2023]
Abstract
Several natural compounds exhibit strong capacity for decreasing triglyceride accumulation, enhancing lipolysis and inducing apoptosis. The present study reports the anti-adipogenic effects of Silybum marianum (SL), Citrus aurantium (CA), Taraxacum officinale (TO), resveratrol (RE), Curcuma longa (CU), caffeine (CF), oleuropein (OL) and docosahexaenoic acid (DHA) in reducing differentiation and increasing lipolysis and apoptosis. Analyses were performed on human primary visceral pre-adipocytes after 10 (P10) and 20 (P20) days of treatment during differentiation and on mature adipocytes after 7 days of treatment (A7). The percentage of apoptosis induced by TO extract in P10 and P20 cells was significantly higher than that induced by all other compounds and in CTRL cells. Triglyceride accumulation was significantly lower in cells treated with DHA, CF, RE in comparison to cells treated with OL and in CTRL cells. Treatments with CF, DHA and OL significantly incremented lipolysis in P20 cells in comparison to other compounds and in CTRL cells. On the contrary, the treatment of A7 cells with OL, CA and TO compounds significantly increased cell lipolysis. The addition of CF in differentiating P20 pre-adipocytes significantly increased the expression of genes involved in inhibition of adipogenesis, such as GATA2, GATA3, WNT1, WNT3A, SFRP5, and DLK1. Genes involved in promoting adipogenesis such as CCND1, CEBPB and SREBF1 were significantly down-regulated by the treatment. The screening of bioactive compounds for anti-adipogenic effects showed that in differentiating cells TO extract was the most effective in inducing apoptosis and CF and DHA extracts were more efficient in inhibition of differentiation and in induction of cell lipolysis.
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Affiliation(s)
- Monica Colitti
- Department of Scienze Agroalimentari, Ambientali e Animali, University of Udine, via delle Scienze, 206, 33100 Udine, Italy
| | - Bruno Stefanon
- Department of Scienze Agroalimentari, Ambientali e Animali, University of Udine, via delle Scienze, 206, 33100 Udine, Italy
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186
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Zhang L, Huang Y, Liu F, Zhang F, Ding W. Vanadium(IV)-chlorodipicolinate inhibits 3T3-L1 preadipocyte adipogenesis by activating LKB1/AMPK signaling pathway. J Inorg Biochem 2016; 162:1-8. [PMID: 27318173 DOI: 10.1016/j.jinorgbio.2016.06.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 05/27/2016] [Accepted: 06/03/2016] [Indexed: 01/12/2023]
Abstract
Our previous studies demonstrated that vanadium(IV) complex with 4-chlorodipicolinic acid (VOdipic-Cl) alleviates lipid abnormalities in streptozotocin (STZ)-induced diabetic rats. However, the molecular mechanisms are not fully understood. In the present study, the effect of VOdipic-Cl on adipogenesis and mechanisms of action in 3T3-L1 preadipocytes were investigated. The 3T3-L1 preadipocytes were induced to differentiate in the presence or absence of VOdipic-Cl for 8days. The cells were determined for proliferation, differentiation, lipid accumulation as well as the protein expressions of molecular targets that are involved in fatty acid synthesis. The results demonstrated that VOdipic-Cl at concentrations ranging from 2.5μM to 10μM reduced the intracellular lipid content by 10%, 22% and 30% compared to control. VOdipic-Cl down-regulated the expression of peroxisome proliferator-activated receptor (PPARγ), CCAAT element binding protein a (C/EBPα), sterol regulatory element binding protein 1c (SREBP-1c), fatty acid synthase (FAS) and fatty acid-binding protein 4 (FABP4) and activated the phosphorylation of acetyl coenzyme A carboxylase (ACC), adenosine monophosphate-activated protein kinase (AMPK) and liver kinase B1 (LKB1) in a dose-dependent manner. Further studies showed that AMPK small interfering RNA (siRNA) markedly up-regulated PPARγ, C/EBPα, FAS and FABP4 expression in the presence of VOdipic-Cl, respectively. When LKB1 was silenced with siRNA, the effect of VOdipic-Cl on AMPK phosphorylation was diminished. Taken together, these results suggested that VOdipic-Cl can inhibit 3T3-L1 preadipocyte differentiation and adipogenesis through activating the LKB1/AMPK-dependent signaling pathway. These findings raise the possibility that VOdipic-Cl may be a promising therapy in treatment of obesity.
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Affiliation(s)
- Liang Zhang
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Ying Huang
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Fang Liu
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Fang Zhang
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China.
| | - Wenjun Ding
- Laboratory of Environment and Health, College of Life Sciences, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China.
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187
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A Fomitopsis pinicola Jeseng Formulation Has an Antiobesity Effect and Protects against Hepatic Steatosis in Mice with High-Fat Diet-Induced Obesity. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 2016:7312472. [PMID: 27200103 PMCID: PMC4855004 DOI: 10.1155/2016/7312472] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2016] [Revised: 03/23/2016] [Accepted: 03/31/2016] [Indexed: 11/17/2022]
Abstract
This study investigated the antiobesity effect of an extract of the Fomitopsis pinicola Jeseng-containing formulation (FAVA), which is a combination of four natural components: Fomitopsis pinicola Jeseng; Acanthopanax senticosus; Viscum album coloratum; and Allium tuberosum. High-fat diet- (HFD-) fed male C57BL/6J mice were treated with FAVA (200 mg/kg/day) for 12 weeks to monitor the antiobesity effect and amelioration of nonalcoholic fatty liver diseases (NAFLD). Body and white adipose tissue (WAT) weights were reduced in FAVA-treated mice, and a histological examination showed an amelioration of fatty liver in FAVA-treated mice without decreasing food consumption. Additionally, FAVA reduced serum lipid profiles, leptin, and insulin levels compared with the HFD control group. The FAVA extract suppressed lipogenic mRNA expression levels from WAT concomitantly with the cholesterol biosynthesis level in the liver. These results demonstrate the inhibitory effects of FAVA on obesity and NAFLD in the diet-induced obese (DIO) mouse model. Therefore, FAVA may be an effective therapeutic candidate for treating obesity and fatty liver caused by a high-fat diet.
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188
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Solovyov IA, Dobrovol’skaya EV, Moskalev AA. Genetic control of circadian rhythms and aging. RUSS J GENET+ 2016. [DOI: 10.1134/s1022795416040104] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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189
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Vachkova E, Bosnakovski D, Yonkova P, Grigorova N, Ivanova Z, Todorov P, Penchev G, Milanova A, Simeonova G, Stanilova S, Georgiev IP. Adipogenic potential of stem cells derived from rabbit subcutaneous and visceral adipose tissue in vitro. In Vitro Cell Dev Biol Anim 2016; 52:829-37. [PMID: 27173612 DOI: 10.1007/s11626-016-0048-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 04/22/2016] [Indexed: 02/06/2023]
Abstract
Rabbits are considered as appropriate animal models to study some obesity-associated abnormalities because of the similarity of their blood lipid profile and metabolism to humans. The current study was focused on comparison of adipose differentiation ability in rabbit adipose-derived stem cells (ADSC) in vitro. Subcutaneous and visceral stromal vascular fractions (SVF) were isolated from three 28-d-old New Zealand rabbits by collagenase digestion. Supernatants from both isolates were collected 24 h after the initial plating. On the fourth passage, all isolated cell types undergo triplicate adipogenic induction. The adipose induction potential was calculated as percentage of increasing optical density (OD) values. The data revealed that with increasing the number of induction cycles, the induction tendency in visceral ADSC decreased in contrast to the subcutaneous ones. Although the supernatants did not reach induction levels of their relevant precursors, they follow the same pattern in both subcutaneous and visceral ADSC. All cell types successfully passed osteogenic and chondrogenic differentiation. In conclusion, the best adipose induction ability was observed in directly plated subcutaneous cell population. The increase of induction numbers depressed adipose induction ability in cell populations derived from visceral fat depots.
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Affiliation(s)
- Ekaterina Vachkova
- Animal Physiology Unit, Department of Pharmacology, Animal Physiology and Physiological Chemistry, Faculty of Veterinary Medicine, Trakia University, 6 000, Stara Zagora, Bulgaria.
| | - D Bosnakovski
- Faculty of Medical Sciences, University Goce Delčev-Štip, Shtip, Republic of Macedonia
| | - P Yonkova
- Department of Veterinary Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria
| | - N Grigorova
- Animal Physiology Unit, Department of Pharmacology, Animal Physiology and Physiological Chemistry, Faculty of Veterinary Medicine, Trakia University, 6 000, Stara Zagora, Bulgaria
| | - Zh Ivanova
- Animal Physiology Unit, Department of Pharmacology, Animal Physiology and Physiological Chemistry, Faculty of Veterinary Medicine, Trakia University, 6 000, Stara Zagora, Bulgaria
| | - P Todorov
- Institute of Biology and Immunology of Reproduction, Sofia, Bulgaria
| | - G Penchev
- Department of Veterinary Anatomy, Histology and Embryology, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria
| | - A Milanova
- Animal Physiology Unit, Department of Pharmacology, Animal Physiology and Physiological Chemistry, Faculty of Veterinary Medicine, Trakia University, 6 000, Stara Zagora, Bulgaria
| | - G Simeonova
- Department of Veterinary Surgery, Faculty of Veterinary Medicine, Trakia University, 6000, Stara Zagora, Bulgaria
| | - S Stanilova
- Department of Molecular Biology, Immunology and Genetics, Faculty of Medicine, Trakia University, Stara Zagora, Bulgaria
| | - I Penchev Georgiev
- Animal Physiology Unit, Department of Pharmacology, Animal Physiology and Physiological Chemistry, Faculty of Veterinary Medicine, Trakia University, 6 000, Stara Zagora, Bulgaria
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190
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Huttala O, Mysore R, Sarkanen JR, Heinonen T, Olkkonen VM, Ylikomi T. Differentiation of human adipose stromal cells in vitro into insulin-sensitive adipocytes. Cell Tissue Res 2016; 366:63-74. [DOI: 10.1007/s00441-016-2409-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 04/05/2016] [Indexed: 12/28/2022]
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191
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Clevenger TN, Hinman CR, Ashley Rubin RK, Smither K, Burke DJ, Hawker CJ, Messina D, Van Epps D, Clegg DO. Vitronectin-Based, Biomimetic Encapsulating Hydrogel Scaffolds Support Adipogenesis of Adipose Stem Cells. Tissue Eng Part A 2016; 22:597-609. [PMID: 26956095 DOI: 10.1089/ten.tea.2015.0550] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Soft tissue defects are relatively common, yet currently used reconstructive treatments have varying success rates, and serious potential complications such as unpredictable volume loss and reabsorption. Human adipose-derived stem cells (ASCs), isolated from liposuction aspirate have great potential for use in soft tissue regeneration, especially when combined with a supportive scaffold. To design scaffolds that promote differentiation of these cells down an adipogenic lineage, we characterized changes in the surrounding extracellular environment during adipogenic differentiation. We found expression changes in both extracellular matrix proteins, including increases in expression of collagen-IV and vitronectin, as well as changes in the integrin expression profile, with an increase in expression of integrins such as αVβ5 and α1β1. These integrins are known to specifically interact with vitronectin and collagen-IV, respectively, through binding to an Arg-Gly-Asp (RGD) sequence. When three different short RGD-containing peptides were incorporated into three-dimensional (3D) hydrogel cultures, it was found that an RGD-containing peptide derived from vitronectin provided strong initial attachment, maintained the desired morphology, and created optimal conditions for in vitro 3D adipogenic differentiation of ASCs. These results describe a simple, nontoxic encapsulating scaffold, capable of supporting the survival and desired differentiation of ASCs for the treatment of soft tissue defects.
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Affiliation(s)
- Tracy N Clevenger
- 1 Center for Stem Cell Biology and Engineering, University of California , Santa Barbara, Santa Barbara, California.,2 Department of Molecular, Cellular and Developmental Biology, University of California , Santa Barbara, Santa Barbara, California
| | - Cassidy R Hinman
- 1 Center for Stem Cell Biology and Engineering, University of California , Santa Barbara, Santa Barbara, California
| | - Rebekah K Ashley Rubin
- 1 Center for Stem Cell Biology and Engineering, University of California , Santa Barbara, Santa Barbara, California.,2 Department of Molecular, Cellular and Developmental Biology, University of California , Santa Barbara, Santa Barbara, California
| | | | - Daniel J Burke
- 4 Materials Research Laboratory, University of California , Santa Barbara
| | - Craig J Hawker
- 4 Materials Research Laboratory, University of California , Santa Barbara
| | | | | | - Dennis O Clegg
- 1 Center for Stem Cell Biology and Engineering, University of California , Santa Barbara, Santa Barbara, California.,2 Department of Molecular, Cellular and Developmental Biology, University of California , Santa Barbara, Santa Barbara, California
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192
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Hernández-Bule ML, Martínez-Botas J, Trillo MÁ, Paíno CL, Úbeda A. Antiadipogenic effects of subthermal electric stimulation at 448 kHz on differentiating human mesenchymal stem cells. Mol Med Rep 2016; 13:3895-903. [PMID: 27035334 PMCID: PMC4838151 DOI: 10.3892/mmr.2016.5032] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Accepted: 02/15/2016] [Indexed: 11/06/2022] Open
Abstract
The 448 kHz capacitive‑resistive electric transfer (CRET) is an electrothermal therapy currently applied in anticellulite and antiobesity treatments. The aim of the present study was to determine whether exposure to the CRET electric signal at subthermal doses affected early adipogenic processes in adipose‑derived stem cells (ADSC) from human donors. ADSC were incubated for 2 or 9 days in the presence of adipogenic medium, and exposed or sham‑exposed to 5 min pulses of 448 kHz electric signal at 50 µA/mm2 during the last 48 h of the incubation. Colorimetric, immunofluorescence, western blotting and reverse transcription‑quantitative polymerase chain reaction assays were performed to assess adipogenic differentiation of the ADSC. Electric stimulation significantly decreased cytoplasmic lipid content, after both 2 and 9 days of differentiation. The antiadipogenic response in the 9 day samples was accompanied by activation of mitogen‑activated protein kinase kinase 1/2, decreased expression and partial inactivation of peroxisome proliferator‑activated receptor (PPAR) γ, which was translocated from the nucleus to the cytoplasm, together with a significant decrease in the expression levels of the PPARG1 gene, perilipin, angiopoietin‑like protein 4 and fatty acid synthase. These results demonstrated that subthermal stimulation with CRET interferes with the early adipogenic differentiation in ADSC, indicating that the electric stimulus itself can modulate processes controlling the synthesis and mobilization of fat, even in the absence of the concomitant thermal and mechanical components of the thermoelectric therapy CRET.
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Affiliation(s)
- María Luisa Hernández-Bule
- Department of Bioelectromagnetics, Ramón y Cajal Health Research Institute (IRYCIS), University Hospital Ramón y Cajal, 28034 Madrid, Spain
| | - Javier Martínez-Botas
- Department of Biochemistry, Ramón y Cajal Health Research Institute (IRYCIS), University Hospital Ramón y Cajal, 28034 Madrid, Spain
| | - María Ángeles Trillo
- Department of Bioelectromagnetics, Ramón y Cajal Health Research Institute (IRYCIS), University Hospital Ramón y Cajal, 28034 Madrid, Spain
| | - Carlos L Paíno
- Department of Neurobiology, Ramón y Cajal Health Research Institute (IRYCIS), University Hospital Ramón y Cajal, 28034 Madrid, Spain
| | - Alejandro Úbeda
- Department of Bioelectromagnetics, Ramón y Cajal Health Research Institute (IRYCIS), University Hospital Ramón y Cajal, 28034 Madrid, Spain
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193
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Song YS, Lee DH, Yu JH, Oh DK, Hong JT, Yoon DY. Promotion of adipogenesis by 15-(S)-hydroxyeicosatetraenoic acid. Prostaglandins Other Lipid Mediat 2016; 123:1-8. [DOI: 10.1016/j.prostaglandins.2016.02.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 02/05/2016] [Accepted: 02/17/2016] [Indexed: 10/22/2022]
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194
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Fibroblast Growth Factor 21 Suppresses Adipogenesis in Pig Intramuscular Fat Cells. Int J Mol Sci 2015; 17:ijms17010011. [PMID: 26703591 PMCID: PMC4730258 DOI: 10.3390/ijms17010011] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 11/23/2015] [Accepted: 11/26/2015] [Indexed: 01/08/2023] Open
Abstract
Fibroblast growth factor 21 (FGF21) plays an important role in the treatment of disease associated with muscle insulin resistance which is characterized by various factors, such as intramuscular triglyceride (IMT) content. Studies have also shown that FGF21 inhibits triglyceride synthesis in vivo. However, the precise mechanism whereby FGF21 regulates triglyceride metabolism in intramuscular fat (IMF), which may influence the muscle insulin sensitivity, is not clearly understood. In order to understand the role of FGF21 in IMF deposition, we performed FGF21 overexpression in IMF cells by stable transfection. Our results showed that FGF21 inhibited the key adipogenesis gene mRNA expression of peroxisome proliferator-activated receptor gamma (PPARG), CCAAT/enhancer-binding protein (CEBP) family by reducing lysine-specific demethylase 1 (LSD1) expression which led to significant decline in lipid accumulation, and the result was confirmed by Western blot. Moreover, triggered by FGF21, parts of the adipokines—fatty acid-binding protein 4 (FABP4), glucose transporter 4 (GLUT4), adiponectin (ADIPOQ), and perilipin (PLIN1)—were also down-regulated. Furthermore, FGF21 gene expression was suppressed by transcription factor CEBP beta (CEBPB) which contributed strongly to triglyceride synthesis. Taken together, our study is the first to experimentally demonstrate FGF21 emerging as an efficient blockade of adipogenesis in IMF, thus also providing a new understanding of the mechanism whereby FGF21 improves insulin sensitivity.
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195
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Koh EJ, Kim KJ, Choi J, Jeon HJ, Seo MJ, Lee BY. Ginsenoside Rg1 suppresses early stage of adipocyte development via activation of C/EBP homologous protein-10 in 3T3-L1 and attenuates fat accumulation in high fat diet-induced obese zebrafish. J Ginseng Res 2015; 41:23-30. [PMID: 28123318 PMCID: PMC5223064 DOI: 10.1016/j.jgr.2015.12.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 11/19/2015] [Accepted: 12/04/2015] [Indexed: 01/11/2023] Open
Abstract
Background Ginsenoside Rg1 is a class of steroid glycoside and triterpene saponin in Panax ginseng. Many studies suggest that Rg1 suppresses adipocyte differentiation in 3T3-L1. However, the detail molecular mechanism of Rg1 on adipogenesis in 3T3-L1 is still not fully understood. Methods 3T3-L1 preadipocyte was used to evaluate the effect of Rg1 on adipocyte development in the differentiation in a stage-dependent manner in vitro. Oil Red O staining and Nile red staining were conducted to measure intracellular lipid accumulation and superoxide production, respectively. We analyzed the protein expression using Western blot in vitro. The zebrafish model was used to investigate whether Rg1 suppresses the early stage of fat accumulation in vivo. Results Rg1 decreased lipid accumulation in early-stage differentiation of 3T3-L1 compared with intermediate and later stages of adipocyte differentiation. Rg1 dramatically increased CAAT/enhancer binding protein (C/EBP) homologous protein-10 (CHOP10) and subsequently reduced the C/EBPβ transcriptional activity that prohibited the initiation of adipogenic marker expression as well as triglyceride synthase. Rg1 decreased the expression of extracellular signal-regulated kinase 1/2 and glycogen synthase kinase 3β, which are also essential for stimulating the expression of CEBPβ. Rg1 also reduced reactive oxygen species production because of the downregulated protein level of nicotinamide adenine dinucleotide phosphate hydrogen (NADPH) oxidase 4 (NOX4). While Rg1 increased the endogenous antioxidant enzymes, it also dramatically decreased the accumulation of lipid and triglyceride in high fat diet-induced obese zebrafish. Conclusion We demonstrated that Rg1 suppresses early-stage differentiation via the activation of CHOP10 and attenuates fat accumulation in vivo. These results indicate that Rg1 might have the potential to reduce body fat accumulation in the early stage of obesity.
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Affiliation(s)
- Eun-Jeong Koh
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Korea
| | - Kui-Jin Kim
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Korea
| | - Jia Choi
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Korea
| | - Hui Jeon Jeon
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Korea
| | - Min-Jung Seo
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Korea
| | - Boo-Yong Lee
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Korea
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196
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Ramanathan N, Lim N, Stewart CL. DDX5/p68 RNA helicase expression is essential for initiating adipogenesis. Lipids Health Dis 2015; 14:160. [PMID: 26637310 PMCID: PMC4670549 DOI: 10.1186/s12944-015-0163-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 12/01/2015] [Indexed: 12/29/2022] Open
Abstract
Background DDX5/p68 RNA helicase is a member of the DEAD (Asp-Glu-Ala-Asp) box proteins. Apart from RNA unwinding, DDX5 is an important transcriptional factor and co-activator in cell proliferation and differentiation. Findings Here, we have characterised the role of DDX5 in adipogenesis in 3T3-L1 cells using siRNA mediated suppression. Transient inhibition of Ddx5 mRNA expression at the start of adipogenesis impairs the differentiation programme even when DDX5 expression is restored later in adipogenesis. However transient suppression of Ddx5 at the later stages of adipogenesis do not impair adipogenesis or triglyceride accumulation suggesting Ddx5 expression is dispensable in a mature adipocyte. Conclusion These results implicate DDX5 as a crucial factor involved in the complex transcriptional cascade of events that regulate adipogenesis and essential to the initiation of adipogenesis.
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Affiliation(s)
- Nardev Ramanathan
- Developmental and Regenerative Biology Laboratory, Institute of Medical Biology, #06-06, 8A Biomedical Grove, Singapore, 138648, Republic of Singapore. .,Present address: Davos Life Science Pte Ltd, 3 Biopolis Drive, #04-19, Synapse, Singapore, 138623, Republic of Singapore.
| | - Nicole Lim
- Developmental and Regenerative Biology Laboratory, Institute of Medical Biology, #06-06, 8A Biomedical Grove, Singapore, 138648, Republic of Singapore. .,School of Biological Sciences, College of Science, Nanyang Technological University, Singapore, 637551, Republic of Singapore.
| | - Colin L Stewart
- Developmental and Regenerative Biology Laboratory, Institute of Medical Biology, #06-06, 8A Biomedical Grove, Singapore, 138648, Republic of Singapore. .,School of Biological Sciences, College of Science, Nanyang Technological University, Singapore, 637551, Republic of Singapore.
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197
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Jeon HJ, Choi HS, Lee YJ, Hwang JH, Lee OH, Seo MJ, Kim KJ, Lee BY. Seapolynol Extracted from Ecklonia cava Inhibits Adipocyte Differentiation in Vitro and Decreases Fat Accumulation in Vivo. Molecules 2015; 20:21715-31. [PMID: 26690099 PMCID: PMC6331911 DOI: 10.3390/molecules201219796] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 11/25/2015] [Accepted: 11/26/2015] [Indexed: 01/31/2023] Open
Abstract
Seapolynol (SN) is a polyphenol mixture derived from Ecklonia cava. We evaluated the effects of SN on lipid accumulation in adipocytes, zebrafish, and mice. SN effectively inhibited lipid accumulation in three experimental models by suppressing adipogenic factors. Triglyceride synthetic enzymes such as diacylglycerol acyltransferase 1 (DGAT1) and GPAT3 were also downregulated by SN. This SN-induced inhibition of adipogenic factors was shown to be due to the regulatory effect of SN on early adipogenic factors; SN downregulated the expression of Krueppel-like factor 4 (KLF4), KLF5, CCAAT-enhancer-binding protein β (C/EBPβ), C/EBPδ, and Protein C-ets-2 (ETS2), while KLF2, an anti-early adipogenic factor, was upregulated by SN. SN-mediated inhibition in early adipogenesis was closely correlated with the inhibition of mitotic clonal expansion via cell cycle arrest. SN inhibited cell cycle progression by suppressing cell cycle regulators, such as cyclin A, cyclinD, and pRb but increased p27, a cell cycle inhibitor. In a mouse study, SN effectively reduced body weight and plasma lipid increases induced by a high-fat diet; triglycerides, total cholesterol, and low-density lipoprotein (LDL) levels were markedly reduced by SN. Moreover, SN remarkably improved high-fat-diet-induced hepatic lipid accumulation. Furthermore, SN activated AMP-activated protein kinase-α (AMPKα), an energy sensor, to suppress acetyl-coA carboxylase (ACC), inhibiting lipid synthesis. Our study suggests that SN may be an edible agent that can play a positive role in prevention of metabolic disorders.
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Affiliation(s)
- Hui-Jeon Jeon
- Department of Food Science and Biotechnology, CHA University, Seongnam, Gyeonggi 463-400, Korea.
| | - Hyeon-Son Choi
- Department of Food Science and Technology, Seoul Women's University, Hwarang, Nowon, Seoul 139-774, Korea.
| | - Yeon-Joo Lee
- Department of Food Science and Biotechnology, CHA University, Seongnam, Gyeonggi 463-400, Korea.
| | - Ji-Hyun Hwang
- Department of Food Science and Biotechnology, CHA University, Seongnam, Gyeonggi 463-400, Korea.
| | - Ok-Hwan Lee
- Department of Food Science and Biotechnology, Kangwon National University, Chuncheon 200-701, Korea.
| | - Min-Jung Seo
- Department of Food Science and Biotechnology, CHA University, Seongnam, Gyeonggi 463-400, Korea.
| | - Kui-Jin Kim
- Department of Food Science and Biotechnology, CHA University, Seongnam, Gyeonggi 463-400, Korea.
| | - Boo-Yong Lee
- Department of Food Science and Biotechnology, CHA University, Seongnam, Gyeonggi 463-400, Korea.
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198
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Xu XY, Hu JP, Wu MM, Wang LS, Fang NY. CCAAT/enhancer-binding protein CEBP-2 controls fat consumption and fatty acid desaturation in Caenorhabditis elegans. Biochem Biophys Res Commun 2015; 468:312-8. [DOI: 10.1016/j.bbrc.2015.10.106] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2015] [Accepted: 10/20/2015] [Indexed: 01/17/2023]
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199
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Jang YJ, Jung CH, Ahn J, Gwon SY, Ha TY. Shikonin inhibits adipogenic differentiation via regulation of mir-34a-FKBP1B. Biochem Biophys Res Commun 2015; 467:941-7. [PMID: 26471303 DOI: 10.1016/j.bbrc.2015.10.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Accepted: 10/08/2015] [Indexed: 10/22/2022]
Abstract
Shikonin is a naturally occurring naphthoquinone pigment and a major constituent present in Lithospermum erythrorhizon. Since microRNAs (miRNAs) are one of the key post-transcriptional regulators of adipogenesis, their manipulation represents a potential new strategy to inhibit adipogenesis. Our aim was to investigate shikonin-dependent inhibition of adipogenesis with an emphasis on miRNA-related processes. Mir-34a increased during induced adipogenesis, and this was suppressed in the presence of shikonin. mRNA expression of FKBP1B, a suggested target of mir-34a according to bioinformatics studies, decreased during adipogenesis, but was recovered by shikonin treatment, which reversely correlated with mir-34a expression. A mir-34a inhibitor suppressed MDI-induced adipogenesis by blocking PPARγ and C/EBPα expression, while suppression of mir-34a recovered MDI-induced down-regulation of FKBP1B expression. A mir-34a mimic decreased FKBP1B mRNA expression in 3T3-L1 preadipocytes. We also observed that mir-34a bound directly to the 3'-untranslated region of FKBP1B. Finally, FKBP1B overexpression attenuated MDI-induced adipogenesis, PPARγ, and C/EBPα expression. These results suggest that mir-34a regulates adipogenesis by targeting FKBP1B expression. Our findings reveal that shikonin prevents adipogenesis by blocking the mir-34a-FKBP1B pathway which represents a promising potential target for preventing obesity.
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Affiliation(s)
- Young Jin Jang
- Metabolic Mechanism Research Group, Korea Food Research Institute, Seongnam, Republic of Korea
| | - Chang Hwa Jung
- Metabolic Mechanism Research Group, Korea Food Research Institute, Seongnam, Republic of Korea; Division of Food Biotechnology, University of Science and Technology, Daejeon, Republic of Korea
| | - Jiyun Ahn
- Metabolic Mechanism Research Group, Korea Food Research Institute, Seongnam, Republic of Korea; Division of Food Biotechnology, University of Science and Technology, Daejeon, Republic of Korea
| | - So Young Gwon
- Metabolic Mechanism Research Group, Korea Food Research Institute, Seongnam, Republic of Korea
| | - Tae Youl Ha
- Metabolic Mechanism Research Group, Korea Food Research Institute, Seongnam, Republic of Korea; Division of Food Biotechnology, University of Science and Technology, Daejeon, Republic of Korea.
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HMGA1 overexpression in adipose tissue impairs adipogenesis and prevents diet-induced obesity and insulin resistance. Sci Rep 2015; 5:14487. [PMID: 26411793 PMCID: PMC4585969 DOI: 10.1038/srep14487] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 08/12/2015] [Indexed: 01/14/2023] Open
Abstract
High-Mobility-Group-A1 (HMGA1) proteins are non-histone proteins that regulate chromatin structure and gene expression during embryogenesis, tumourigenesis and immune responses. In vitro studies suggest that HMGA1 proteins may be required to regulate adipogenesis. To examine the role of HMGA1 in vivo, we generated transgenic mice overexpressing HMGA1 in adipose tissues. HMGA1 transgenic mice showed a marked reduction in white and brown adipose tissue mass that was associated with downregulation of genes involved in adipogenesis and concomitant upregulation of preadipocyte markers. Reduced adipogenesis and decreased fat mass were not associated with altered glucose homeostasis since HMGA1 transgenic mice fed a regular-chow diet exhibited normal glucose tolerance and insulin sensitivity. However, when fed a high-fat diet, overexpression of HMGA1 resulted in decreased body-weight gain, reduced fat mass, but improved insulin sensitivity and glucose tolerance. Although HMGA1 transgenic mice exhibited impaired glucose uptake in adipose tissue due to impaired adipogenesis, the increased glucose uptake observed in skeletal muscle may account for the improved glucose homeostasis. Our results indicate that HMGA1 plays an important function in the regulation of white and brown adipogenesis in vivo and suggests that impaired adipocyte differentiation and decreased fat mass is not always associated with impaired whole-body glucose homeostasis.
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