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Rafiei H, Yeung M, Kowalski S, Li MY, Harris D, Chang J, Nguyen N, Yorke E, Sampath S, Hollman S, Duns G, O'Brien L, Steidl C, Krystal G, Elisia I. Butyrate and tributyrin reduce LPS-induced inflammatory cytokine production from human visceral fat. Int J Obes (Lond) 2024:10.1038/s41366-024-01581-9. [PMID: 38987636 DOI: 10.1038/s41366-024-01581-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 06/17/2024] [Accepted: 07/02/2024] [Indexed: 07/12/2024]
Abstract
INTRODUCTION The current obesity crisis has resulted in many people with excess adipose tissue suffering from chronic inflammation. This inflammation is largely due to the release of cytokines and chemokines from visceral fat. The aim of this study was to identify potential anti-inflammatory agents that might alleviate obesity-induced chronic inflammation. METHODS To identify agents that might alleviate this obesity-induced chronic inflammation we have developed a simple protocol for incubating intact pieces of human visceral adipose tissue in 35 mm tissue culture plates, in the presence of low-dose lipopolysaccharide (LPS) and co-incubating these samples with potential anti-inflammatory agents. RNA-Seq analysis was performed to identify enriched gene expression signatures among the most significantly differentially expressed genes. RESULTS From this screen, we have identified the short-chain fatty acid (SCFA) sodium butyrate and its triacylglyceride form, tributyrin, as effective agents, significantly reducing the production of LPS-induced inflammatory cytokines and chemokines from all adipose tissue samples tested. As well, these agents appear to be non-toxic at the concentrations tested. RNA-Seq analysis has revealed that IL36γ is one of the most upregulated genes in response to LPS and one of the most downregulated when sodium butyrate is added to human fat samples stimulated with LPS. IL-36γ ELISAs confirmed this holds true at the protein level as well. CONCLUSIONS These studies suggest that the short-chain fatty acid, sodium butyrate, and its triacylglyceride form, tributyrin, might alleviate the chronic inflammation that is associated with many individuals with obesity.
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Affiliation(s)
- Hossein Rafiei
- Terry Fox Laboratory, BC Cancer Research Institute, Vancouver, BC, V5Z 1L3, Canada
| | - Michelle Yeung
- Terry Fox Laboratory, BC Cancer Research Institute, Vancouver, BC, V5Z 1L3, Canada
| | - Sara Kowalski
- Terry Fox Laboratory, BC Cancer Research Institute, Vancouver, BC, V5Z 1L3, Canada
| | - Michael Yu Li
- Department of Lymphoid Cancer Research, BC Cancer Research Institute, Vancouver, BC, V5Z 1L3, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, V5Z 1L3, Canada
| | - David Harris
- Richmond Metabolic and Bariatric Surgery Program, Richmond Hospital, Vancouver Coastal Health, Richmond, BC, V7C 5L9, Canada
| | - Jacqueline Chang
- Richmond Metabolic and Bariatric Surgery Program, Richmond Hospital, Vancouver Coastal Health, Richmond, BC, V7C 5L9, Canada
| | - Nam Nguyen
- Richmond Metabolic and Bariatric Surgery Program, Richmond Hospital, Vancouver Coastal Health, Richmond, BC, V7C 5L9, Canada
| | - Ekua Yorke
- Richmond Metabolic and Bariatric Surgery Program, Richmond Hospital, Vancouver Coastal Health, Richmond, BC, V7C 5L9, Canada
| | - Sharadh Sampath
- Richmond Metabolic and Bariatric Surgery Program, Richmond Hospital, Vancouver Coastal Health, Richmond, BC, V7C 5L9, Canada
| | - Serena Hollman
- Terry Fox Laboratory, BC Cancer Research Institute, Vancouver, BC, V5Z 1L3, Canada
| | - Gerben Duns
- Department of Lymphoid Cancer Research, BC Cancer Research Institute, Vancouver, BC, V5Z 1L3, Canada
| | - Luke O'Brien
- Department of Lymphoid Cancer Research, BC Cancer Research Institute, Vancouver, BC, V5Z 1L3, Canada
| | - Christian Steidl
- Department of Lymphoid Cancer Research, BC Cancer Research Institute, Vancouver, BC, V5Z 1L3, Canada
- Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, V5Z 1L3, Canada
| | - Gerald Krystal
- Terry Fox Laboratory, BC Cancer Research Institute, Vancouver, BC, V5Z 1L3, Canada
| | - Ingrid Elisia
- Terry Fox Laboratory, BC Cancer Research Institute, Vancouver, BC, V5Z 1L3, Canada.
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Matilainen J, Berg V, Vaittinen M, Impola U, Mustonen AM, Männistö V, Malinen M, Luukkonen V, Rosso N, Turunen T, Käkelä P, Palmisano S, Arasu UT, Sihvo SP, Aaltonen N, Härkönen K, Caddeo A, Kaminska D, Pajukanta P, Kaikkonen MU, Tiribelli C, Käkelä R, Laitinen S, Pihlajamäki J, Nieminen P, Rilla K. Increased secretion of adipocyte-derived extracellular vesicles is associated with adipose tissue inflammation and the mobilization of excess lipid in human obesity. J Transl Med 2024; 22:623. [PMID: 38965596 PMCID: PMC11225216 DOI: 10.1186/s12967-024-05249-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 04/28/2024] [Indexed: 07/06/2024] Open
Abstract
BACKGROUND Obesity is a worldwide epidemic characterized by adipose tissue (AT) inflammation. AT is also a source of extracellular vesicles (EVs) that have recently been implicated in disorders related to metabolic syndrome. However, our understanding of mechanistic aspect of obesity's impact on EV secretion from human AT remains limited. METHODS We investigated EVs from human Simpson Golabi Behmel Syndrome (SGBS) adipocytes, and from AT as well as plasma of subjects undergoing bariatric surgery. SGBS cells were treated with TNFα, palmitic acid, and eicosapentaenoic acid. Various analyses, including nanoparticle tracking analysis, electron microscopy, high-resolution confocal microscopy, and gas chromatography-mass spectrometry, were utilized to study EVs. Plasma EVs were analyzed with imaging flow cytometry. RESULTS EVs from mature SGBS cells differed significantly in size and quantity compared to preadipocytes, disagreeing with previous findings in mouse adipocytes and indicating that adipogenesis promotes EV secretion in human adipocytes. Inflammatory stimuli also induced EV secretion, and altered EV fatty acid (FA) profiles more than those of cells, suggesting the role of EVs as rapid responders to metabolic shifts. Visceral AT (VAT) exhibited higher EV secretion compared to subcutaneous AT (SAT), with VAT EV counts positively correlating with plasma triacylglycerol (TAG) levels. Notably, the plasma EVs of subjects with obesity contained a higher number of adiponectin-positive EVs than those of lean subjects, further demonstrating higher AT EV secretion in obesity. Moreover, plasma EV counts of people with obesity positively correlated with body mass index and TNF expression in SAT, connecting increased EV secretion with AT expansion and inflammation. Finally, EVs from SGBS adipocytes and AT contained TAGs, and EV secretion increased despite signs of less active lipolytic pathways, indicating that AT EVs could be involved in the mobilization of excess lipids into circulation. CONCLUSIONS We are the first to provide detailed FA profiles of human AT EVs. We report that AT EV secretion increases in human obesity, implicating their role in TAG transport and association with adverse metabolic parameters, thereby emphasizing their role in metabolic disorders. These findings promote our understanding of the roles that EVs play in human AT biology and metabolic disorders.
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Affiliation(s)
- Johanna Matilainen
- Faculty of Health Sciences, School of Medicine, Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland.
| | - Viivi Berg
- Faculty of Health Sciences, School of Medicine, Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland
- Faculty of Science, Forestry and Technology, Department of Technical Physics, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland
| | - Maija Vaittinen
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
| | - Ulla Impola
- Finnish Red Cross Blood Service, Helsinki, Finland
| | - Anne-Mari Mustonen
- Faculty of Health Sciences, School of Medicine, Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland
- Faculty of Science, Forestry and Technology, Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland
| | - Ville Männistö
- Kuopio University Hospital, Kuopio, Finland
- Faculty of Health Sciences, School of Medicine, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Marjo Malinen
- Faculty of Science, Forestry and Technology, Department of Environmental and Biological Sciences, University of Eastern Finland, Joensuu, Finland
- Department of Forestry and Environmental Engineering, South-Eastern Finland University of Applied Sciences, Kouvola, Finland
| | - Veera Luukkonen
- Faculty of Health Sciences, School of Medicine, Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland
| | - Natalia Rosso
- Metabolic Liver Disease Unit, Centro Studi Fegato, Fondazione Italiana Fegato, SS14 Km 163.5 Area Science Park Basovizza, Trieste, Italy
| | - Tanja Turunen
- Faculty of Health Sciences, School of Medicine, Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland
| | - Pirjo Käkelä
- Kuopio University Hospital, Kuopio, Finland
- Faculty of Health Sciences, School of Medicine, Institute of Clinical Medicine, Department of Surgery, University of Eastern Finland, Kuopio, Finland
| | - Silvia Palmisano
- Surgical Clinic Division, Cattinara Hospital, Trieste, Italy
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Uma Thanigai Arasu
- Faculty of Health Sciences, A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Sanna P Sihvo
- Faculty of Biological and Environmental Sciences, Molecular and Integrative Biosciences Research Programme, University of Helsinki, Helsinki, Finland
- Helsinki Institute of Life Science (HiLIFE), Helsinki University Lipidomics Unit (HiLIPID), Biocenter Finland, Helsinki, Finland
| | - Niina Aaltonen
- Faculty of Health Sciences, School of Medicine, Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland
| | - Kai Härkönen
- Faculty of Health Sciences, School of Medicine, Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland
| | - Andrea Caddeo
- Department of Molecular and Clinical Medicine, Institute of Medicine, Wallenberg Laboratory, University of Gothenburg, Sahlgrenska Academy, Gothenburg, Sweden
| | - Dorota Kaminska
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
- Department of Medicine, Division of Cardiology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Päivi Pajukanta
- Department of Human Genetics, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
- Institute for Precision Health, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Minna U Kaikkonen
- Faculty of Health Sciences, A. I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio, Finland
| | - Claudio Tiribelli
- Metabolic Liver Disease Unit, Centro Studi Fegato, Fondazione Italiana Fegato, SS14 Km 163.5 Area Science Park Basovizza, Trieste, Italy
| | - Reijo Käkelä
- Faculty of Biological and Environmental Sciences, Molecular and Integrative Biosciences Research Programme, University of Helsinki, Helsinki, Finland
- Helsinki Institute of Life Science (HiLIFE), Helsinki University Lipidomics Unit (HiLIPID), Biocenter Finland, Helsinki, Finland
| | | | - Jussi Pihlajamäki
- Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
- Endocrinology and Clinical Nutrition, Kuopio University Hospital, Kuopio, Finland
| | - Petteri Nieminen
- Faculty of Health Sciences, School of Medicine, Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland
| | - Kirsi Rilla
- Faculty of Health Sciences, School of Medicine, Institute of Biomedicine, University of Eastern Finland, P.O. Box 1627, 70211, Kuopio, Finland
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Regmi A, Aihara E, Christe ME, Varga G, Beyer TP, Ruan X, Beebe E, O'Farrell LS, Bellinger MA, Austin AK, Lin Y, Hu H, Konkol DL, Wojnicki S, Holland AK, Friedrich JL, Brown RA, Estelle AS, Badger HS, Gaidosh GS, Kooijman S, Rensen PCN, Coskun T, Thomas MK, Roell W. Tirzepatide modulates the regulation of adipocyte nutrient metabolism through long-acting activation of the GIP receptor. Cell Metab 2024; 36:1534-1549.e7. [PMID: 38878772 DOI: 10.1016/j.cmet.2024.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 02/20/2024] [Accepted: 05/21/2024] [Indexed: 06/28/2024]
Abstract
Tirzepatide, a glucose-dependent insulinotropic polypeptide/glucagon-like peptide 1 receptor (GIPR/GLP-1R) agonist, has, in clinical trials, demonstrated greater reductions in glucose, body weight, and triglyceride levels compared with selective GLP-1R agonists in people with type 2 diabetes (T2D). However, cellular mechanisms by which GIPR agonism may contribute to these improved efficacy outcomes have not been fully defined. Using human adipocyte and mouse models, we investigated how long-acting GIPR agonists regulate fasted and fed adipocyte functions. In functional assays, GIPR agonism enhanced insulin signaling, augmented glucose uptake, and increased the conversion of glucose to glycerol in a cooperative manner with insulin; however, in the absence of insulin, GIPR agonists increased lipolysis. In diet-induced obese mice treated with a long-acting GIPR agonist, circulating triglyceride levels were reduced during oral lipid challenge, and lipoprotein-derived fatty acid uptake into adipose tissue was increased. Our findings support a model for long-acting GIPR agonists to modulate both fasted and fed adipose tissue function differentially by cooperating with insulin to augment glucose and lipid clearance in the fed state while enhancing lipid release when insulin levels are reduced in the fasted state.
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Affiliation(s)
- Ajit Regmi
- Eli Lilly and Company, Indianapolis, IN 46285, USA
| | | | | | - Gabor Varga
- Eli Lilly and Company, Indianapolis, IN 46285, USA
| | | | | | - Emily Beebe
- Eli Lilly and Company, Indianapolis, IN 46285, USA
| | | | | | | | - Yanzhu Lin
- Eli Lilly and Company, Indianapolis, IN 46285, USA
| | - Haitao Hu
- Eli Lilly and Company, Indianapolis, IN 46285, USA
| | | | | | | | | | | | | | | | | | - Sander Kooijman
- Department of Medicine, Division of Endocrinology, and Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, 2333 ZA Leiden, the Netherlands
| | - Patrick C N Rensen
- Department of Medicine, Division of Endocrinology, and Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, 2333 ZA Leiden, the Netherlands
| | - Tamer Coskun
- Eli Lilly and Company, Indianapolis, IN 46285, USA
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Levi J, Guglielmetti C, Henrich TJ, Yoon JC, Gokhale PC, Reardon DA, Packiasamy J, Huynh L, Cabrera H, Ruzevich M, Blecha J, Peluso MJ, Huynh TL, An SM, Dornan M, Belanger AP, Nguyen QD, Seo Y, Song H, Chaumeil MM, VanBrocklin HF, Chae HD. [ 18F]F-AraG imaging reveals association between neuroinflammation and brown- and bone marrow adipose tissue. Commun Biol 2024; 7:793. [PMID: 38951146 PMCID: PMC11217368 DOI: 10.1038/s42003-024-06494-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 06/22/2024] [Indexed: 07/03/2024] Open
Abstract
Brown and brown-like adipose tissues have attracted significant attention for their role in metabolism and therapeutic potential in diabetes and obesity. Despite compelling evidence of an interplay between adipocytes and lymphocytes, the involvement of these tissues in immune responses remains largely unexplored. This study explicates a newfound connection between neuroinflammation and brown- and bone marrow adipose tissue. Leveraging the use of [18F]F-AraG, a mitochondrial metabolic tracer capable of tracking activated lymphocytes and adipocytes simultaneously, we demonstrate, in models of glioblastoma and multiple sclerosis, the correlation between intracerebral immune infiltration and changes in brown- and bone marrow adipose tissue. Significantly, we show initial evidence that a neuroinflammation-adipose tissue link may also exist in humans. This study proposes the concept of an intricate immuno-neuro-adipose circuit, and highlights brown- and bone marrow adipose tissue as an intermediary in the communication between the immune and nervous systems. Understanding the interconnectedness within this circuitry may lead to advancements in the treatment and management of various conditions, including cancer, neurodegenerative diseases and metabolic disorders.
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Affiliation(s)
- Jelena Levi
- CellSight Technologies Incorporated, San Francisco, CA, USA.
| | - Caroline Guglielmetti
- Department of Physical Therapy and Rehabilitation Science, University of California San Francisco, San Francisco, CA, USA
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
- Mallinckrodt Institute of Radiology, Washington University in St. Louis, St. Louis, MO, USA
| | - Timothy J Henrich
- Division of Experimental Medicine, University of California San Francisco, San Francisco, CA, USA
| | - John C Yoon
- Division of Endocrinology, Department of Internal Medicine, University of California Davis School of Medicine, Davis, CA, USA
| | | | | | | | - Lyna Huynh
- CellSight Technologies Incorporated, San Francisco, CA, USA
| | - Hilda Cabrera
- CellSight Technologies Incorporated, San Francisco, CA, USA
| | | | - Joseph Blecha
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - Michael J Peluso
- Division of HIV, ID and Global Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Tony L Huynh
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - Sung-Min An
- Division of Endocrinology, Department of Internal Medicine, University of California Davis School of Medicine, Davis, CA, USA
| | - Mark Dornan
- Molecular Cancer Imaging Facility, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Anthony P Belanger
- Molecular Cancer Imaging Facility, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Quang-Dé Nguyen
- Lurie Family Imaging Center, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Youngho Seo
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - Hong Song
- Department of Radiology, Stanford University, Palo Alto, CA, USA
| | - Myriam M Chaumeil
- Department of Physical Therapy and Rehabilitation Science, University of California San Francisco, San Francisco, CA, USA
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - Henry F VanBrocklin
- Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA
| | - Hee-Don Chae
- CellSight Technologies Incorporated, San Francisco, CA, USA
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Chen JH, Chi PJ, Chen CY, Tai CM, Chen PJ, Su YC, Lin HY, Wu MS. Three-Month Excessive Body Weight Loss < 37.7% as a Predictor of Mid-term Suboptimal Outcomes Postlaparoscopic Sleeve Gastrectomy: Risk Factors and the Impact of Neutrophil-to-Lymphocyte Ratio on Adipocyte Function. Obes Surg 2024; 34:2317-2328. [PMID: 38851646 DOI: 10.1007/s11695-024-07315-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Revised: 05/20/2024] [Accepted: 05/23/2024] [Indexed: 06/10/2024]
Abstract
INTRODUCTION This study aimed to evaluate the impact of achieving < 37.7% excess body-weight loss (EBWL) within 3 months of postlaparoscopic sleeve gastrectomy (LSG) on clinical outcomes and its correlation with adipocyte function. METHODS Patients (n = 176) who underwent LSG between January 2019 and January 2023 were included. Weight loss and status of health markers were monitored postoperatively. The cohort was stratified based on EBWL < 37.7% at 3 months or not. Variables including neutrophil-to-lymphocyte ratio (NLR), insulin resistance, and comorbidities were analyzed. Omental visceral and subcutaneous adipose tissue samples were used to analyze the differences in adipocyte function by western blot. RESULTS Patients with EBWL < 37.7% at 3 months post-LSG (suboptimal group) comprised less likelihood of achieving ≥ 50% EBWL than those who achieved ≥ 37.7% EBWL (optimal group) at 6 months (42.55% vs. 95.52% in optimal group, p < 0.001), 12 months (85.11% vs. 99.25% in optimal group, p < 0.001) and 24 months (77.14% vs. 94.74% in optimal group, p = 0.009) post-LSG. High BMI (OR = 1.222, 95% CI 1.138-1.312, p < 0.001), NLR ≥ 2.36 (OR = 2.915, 95% CI 1.257-6.670, p = 0.013), and female sex (OR = 3.243, 95% CI 1.306-8.051, p = 0.011) significantly predicted EBWL < 37.7% at 3 months post-LSG. Patients with NLR ≥ 2.36 had significantly lower adipose triglyceride lipase in omental fat (p = 0.025). CONCLUSION EBWL < 37.7% at 3 months post-LSG is a strong predictor of subsequent suboptimal weight loss. High BMI, NLR ≥ 2.36, and female sex are risk factors in predicting EBWL < 37.7% at 3 months post-LSG. These findings may offer a reference to apply adjuvant weight loss medications to patients who are predisposed to suboptimal outcomes.
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Affiliation(s)
- Jian-Han Chen
- Division of General Surgery, Yanchao Dist, E-Da Hospital, No. 1, Yida Rd, Kaohsiung City 824, Taiwan.
- Bariatric and Metabolism International Surgery Center, E-Da Hospital, Kaohsiung, Taiwan.
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan.
| | - Po-Jui Chi
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan
- Devision of Nephrology, Department of Medicine, E-Da Hospital, Kaohsiung City, 824, Taiwan
| | - Chung-Yen Chen
- Division of General Surgery, Yanchao Dist, E-Da Hospital, No. 1, Yida Rd, Kaohsiung City 824, Taiwan
- Bariatric and Metabolism International Surgery Center, E-Da Hospital, Kaohsiung, Taiwan
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan
| | - Chi-Ming Tai
- Bariatric and Metabolism International Surgery Center, E-Da Hospital, Kaohsiung, Taiwan
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan
- Division of Gastroenterology and Hepatology, E-Da Hospital, Kaohsiung City, 824, Taiwan
| | - Po-Jen Chen
- Department of Medical Research, E-Da Hospital, Kaohsiung City, 824, Taiwan
| | - Yu-Chieh Su
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan
- Division of Hematology-Oncology, E-Da Hospital, Kaohsiung, Taiwan
| | - Hung-Yu Lin
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung, Taiwan.
- Division of Urology, Department of Surgery, E-Da Cancer & E-Da Hospital, Kaohsiung, 824, Taiwan.
| | - Ming-Shiang Wu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.
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Knuth CM, Barayan D, Lee JH, Auger C, de Brito Monteiro L, Ricciuti Z, Metko D, Wells L, Sung HK, Screaton RA, Jeschke MG. Subcutaneous white adipose tissue independently regulates burn-induced hypermetabolism via immune-adipose crosstalk. Cell Rep 2024; 43:113584. [PMID: 38117653 PMCID: PMC10845122 DOI: 10.1016/j.celrep.2023.113584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 09/22/2023] [Accepted: 11/29/2023] [Indexed: 12/22/2023] Open
Abstract
Severe burns induce a chronic hypermetabolic state that persists well past wound closure, indicating that additional internal mechanisms must be involved. Adipose tissue is suggested to be a central regulator in perpetuating hypermetabolism, although this has not been directly tested. Here, we show that thermogenic adipose tissues are activated in parallel to increases in hypermetabolism independent of cold stress. Using an adipose tissue transplantation model, we discover that burn-derived subcutaneous white adipose tissue alone is sufficient to invoke a hypermetabolic response in a healthy recipient mouse. Concomitantly, transplantation of healthy adipose tissue alleviates metabolic dysfunction in a burn recipient. We further show that the nicotinic acetylcholine receptor signaling pathway may mediate an immune-adipose crosstalk to regulate adipose tissue remodeling post-injury. Targeting this pathway could lead to innovative therapeutic interventions to counteract hypermetabolic pathologies.
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Affiliation(s)
- Carly M Knuth
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada; Sunnybrook Research Institute, Toronto, ON M4N 3M5, Canada
| | - Dalia Barayan
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada; Sunnybrook Research Institute, Toronto, ON M4N 3M5, Canada
| | - Ju Hee Lee
- Translational Medicine Program, The Hospital for Sick Children, Toronto, ON M5G 0A4 Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Christopher Auger
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA
| | | | | | - Dea Metko
- Sunnybrook Research Institute, Toronto, ON M4N 3M5, Canada
| | - Lisa Wells
- Sunnybrook Research Institute, Toronto, ON M4N 3M5, Canada
| | - Hoon-Ki Sung
- Translational Medicine Program, The Hospital for Sick Children, Toronto, ON M5G 0A4 Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Robert A Screaton
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada; Sunnybrook Research Institute, Toronto, ON M4N 3M5, Canada; Department of Biochemistry, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Marc G Jeschke
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada; David Braley Cardiac, Vascular and Stroke Research Institute, Hamilton, ON L8L 2X2, Canada; Hamilton General Hospital, Hamilton Health Sciences, Hamilton, ON L8L 2X2, Canada; Department of Surgery, McMaster University, Hamilton, ON L8S 4K1, Canada.
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7
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Salvoza N, Giraudi P, Gazzin S, Bonazza D, Palmisano S, de Manzini N, Zanconati F, Raseni A, Sirianni F, Tiribelli C, Rosso N. The potential role of omentin-1 in obesity-related metabolic dysfunction-associated steatotic liver disease: evidence from translational studies. J Transl Med 2023; 21:906. [PMID: 38082368 PMCID: PMC10714452 DOI: 10.1186/s12967-023-04770-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 11/28/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Obesity, characterized by visceral adipose tissue (VAT) expansion, is closely associated with metabolic dysfunction-associated steatotic liver disease (MASLD) and metabolic dysfunction-associated steatohepatitis (MASH). Recent research has highlighted the crucial role of the adipose tissue-liver axis in the development of MASLD. In this study, we investigated the potential role of omentin-1, a novel adipokine expressed by VAT, in obesity-related MASLD pathogenesis. METHODS Through in silico analysis of differentially expressed genes in VAT from obese patients with and without MASH, we identified omentin-1 as a significant candidate. To validate our findings, we measured omentin-1 levels in VAT and plasma of lean controls and obese patients with biopsy-proven MASLD. Additionally, we assessed omentin-1 expression in the VAT of diet-induced mice MASLD model. In vitro and ex vivo studies were conducted to investigate the effects of omentin-1 on MASLD-related mechanisms, including steatosis, inflammation, endoplasmic reticulum (ER) stress, and oxidative stress. We also analyzed the impact of D-glucose and insulin on VAT omentin-1 levels ex vivo. RESULTS Compared to the lean group, the obese groups exhibited significantly lower VAT and plasma levels of omentin-1. Interestingly, within the obese groups, omentin-1 is further decreased in MASH groups, independent of fibrosis. Likewise, VAT of mice fed with high-fat diet, showing histological signs of MASH showed decreased omentin-1 levels as compared to their control diet counterpart. In vitro experiments on fat-laden human hepatocytes revealed that omentin-1 did not affect steatosis but significantly reduced TNF-α levels, ER stress, and oxidative stress. Similar results were obtained using ex vivo VAT explants from obese patients upon omentin-1 supplementation. Furthermore, omentin-1 decreased the mRNA expression of NF-κB and mitogen-activated protein kinases (ERK and JNK). Ex vivo VAT explants showed that D-glucose and insulin significantly reduced omentin-1 mRNA expression and protein levels. CONCLUSIONS Collectively, our findings suggest that reduced omentin-1 levels contribute to the development of MASLD. Omentin-1 supplementation likely exerts its beneficial effects through the inhibition of the NF-κB and MAPK signaling pathways, and it may additionally play a role in the regulation of glucose and insulin metabolism. Further research is warranted to explore omentin-1 as a potential therapeutic target and/or biomarker for MASLD.
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Affiliation(s)
- Noel Salvoza
- Fondazione Italiana Fegato, ONLUS Area Science Park, Basovizza, Trieste, Italy
- School of Molecular Biomedicine, University of Trieste, Trieste, Italy
| | - Pablo Giraudi
- Fondazione Italiana Fegato, ONLUS Area Science Park, Basovizza, Trieste, Italy
| | - Silvia Gazzin
- Fondazione Italiana Fegato, ONLUS Area Science Park, Basovizza, Trieste, Italy
| | - Deborah Bonazza
- Surgical Pathology Unit, Cattinara Hospital, ASUGI, Trieste, Italy
| | - Silvia Palmisano
- Fondazione Italiana Fegato, ONLUS Area Science Park, Basovizza, Trieste, Italy
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | - Nicolò de Manzini
- Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy
| | | | - Alan Raseni
- Clinical Chemistry Urgency Laboratory Spoke, IRCCS Burlo Garofolo Paediatric Hospital, Trieste, Italy
| | - Francesca Sirianni
- Clinical Chemistry Urgency Laboratory Spoke, IRCCS Burlo Garofolo Paediatric Hospital, Trieste, Italy
| | - Claudio Tiribelli
- Fondazione Italiana Fegato, ONLUS Area Science Park, Basovizza, Trieste, Italy.
| | - Natalia Rosso
- Fondazione Italiana Fegato, ONLUS Area Science Park, Basovizza, Trieste, Italy.
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8
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Ardiana M, Suryawan IGR, Hermawan HO, Harsoyo PM, Shafira AA, Anandita FA. Effect of SARS-CoV-2 spike protein exposure on ACE2 and interleukin 6 productions in human adipocytes: An in-vitro study. NARRA J 2023; 3:e284. [PMID: 38455635 PMCID: PMC10919720 DOI: 10.52225/narra.v3i3.284] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 10/27/2023] [Indexed: 03/09/2024]
Abstract
Since adipocytes play a crucial role in pathogenesis of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection due to their interaction with angiotensin-converting enzyme 2 (ACE2) and interleukin 6 (IL-6), obesity is associated with an increased risk of coronavirus disease 2019 (COVID-19) mortality. Discovery of ACE2 as a SARS-CoV-2 receptor raises a controversy about whether to use ACE inhibitors (ACEIs) could be an optional therapy to prevent cytokine storms. Studies assessing the expressions of ACE2 and IL-6 upon exposure to SARS-CoV-2 is therefore important as a basis for therapeutical trials in the future. The aim of this study was to determine the effect of SARS-CoV-2 spike protein exposure on the production of ACE2 and IL-6 in adipocyte cells. Adipocytes were collected from abdominal adipose tissues of healthy and obese 45-year-old male donor having neither a history of SARS-CoV-2 infection nor COVID-19 vaccination. After being stained using the oil red O protocol, the viable adipocytes were then exposed to S1 subunit of SARS-CoV-2 spike protein. The levels of ACE2 and IL-6 were then examined using the enzyme-linked immunosorbent assay (ELISA). The results showed significant increase of ACE2 (90.22 µg/mL) and IL-6 level (60.01 µg/mL) in human adipocytes upon exposure compared to unexposed control cells (ACE2 13.33 µg/mL; IL-6 21.33 µg/mL), both comparisons had p<0.001). This study provides insight into the basic mechanism of severe COVID-19 symptoms in obese patients and provides a basic information of the potential of ACE inhibitors as an optional therapy for COVID-19 patients with obesity.
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Affiliation(s)
- Meity Ardiana
- Department of Cardiology and Vascular Medicine, Faculty of Medicine, Universitas Airlangga - Dr. Soetomo General Academic Hospital, Surabaya, Indonesia
| | - I GR. Suryawan
- Department of Cardiology and Vascular Medicine, Faculty of Medicine, Universitas Airlangga - Dr. Soetomo General Academic Hospital, Surabaya, Indonesia
| | - Hanestya O. Hermawan
- Department of Cardiology and Vascular Medicine, Faculty of Medicine, Universitas Airlangga - Dr. Soetomo General Academic Hospital, Surabaya, Indonesia
| | - Primasitha M. Harsoyo
- Department of Cardiology and Vascular Medicine, Faculty of Medicine, Universitas Airlangga - Dr. Soetomo General Academic Hospital, Surabaya, Indonesia
| | - Aisya A. Shafira
- Faculty of Medicine, Universitas Airlangga - Dr. Soetomo General Academic Hospital, Surabaya, Indonesia
| | - Faizal A. Anandita
- Master Program of Occupational Medicine, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
- Badaruddin Kasim General Hospital, Tabalong, Indonesia
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9
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Jorgensen AM, Gorkun A, Mahajan N, Willson K, Clouse C, Jeong CG, Varkey M, Wu M, Walker SJ, Molnar JA, Murphy SV, Lee SJ, Yoo JJ, Soker S, Atala A. Multicellular bioprinted skin facilitates human-like skin architecture in vivo. Sci Transl Med 2023; 15:eadf7547. [PMID: 37792956 DOI: 10.1126/scitranslmed.adf7547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 09/15/2023] [Indexed: 10/06/2023]
Abstract
Bioprinting is a promising alternative method to generate skin substitutes because it can replicate the structural organization of the skin into biomimetic layers in vitro. In this study, six primary human skin cell types were used to bioprint a trilayer skin construct consisting of epidermis, dermis, and hypodermis. Transplantation of the bioprinted skin with human cells onto full-thickness wounds of nu/nu mice promoted rapid vascularization and formation of epidermal rete ridges analogous to the native human epidermis, with a normal-looking extracellular matrix. Cell-specific staining confirmed the integration of the implanted cells into the regenerated skin. Using a similar approach, a 5 centimeter-by-5 centimeter bioprinted autologous porcine skin graft was transplanted onto full-thickness wounds in a porcine excisional wound model. The bioprinted skin graft improved epithelialization, reduced skin contraction, and supported normal collagen organization with reduced fibrosis. Differential gene expression demonstrated pro-remodeling protease activity in wounds transplanted with bioprinted autologous skin grafts. These results demonstrate that bioprinted skin can support skin regeneration to allow for nonfibrotic wound healing and suggest that the skin bioprinting technology may be applicable for human clinical use.
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Affiliation(s)
- Adam M Jorgensen
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Anastasiya Gorkun
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Naresh Mahajan
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Kelsey Willson
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Cara Clouse
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Claire G Jeong
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Mathew Varkey
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Mingsong Wu
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Stephen J Walker
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Joseph A Molnar
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
- Department of Plastic and Reconstructive Surgery, Atrium Health Wake Forest Baptist Hospital, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Sean V Murphy
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Sang Jin Lee
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - James J Yoo
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Shay Soker
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
| | - Anthony Atala
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157, USA
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10
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McAllan L, Baranasic D, Villicaña S, Brown S, Zhang W, Lehne B, Adamo M, Jenkinson A, Elkalaawy M, Mohammadi B, Hashemi M, Fernandes N, Lambie N, Williams R, Christiansen C, Yang Y, Zudina L, Lagou V, Tan S, Castillo-Fernandez J, King JWD, Soong R, Elliott P, Scott J, Prokopenko I, Cebola I, Loh M, Lenhard B, Batterham RL, Bell JT, Chambers JC, Kooner JS, Scott WR. Integrative genomic analyses in adipocytes implicate DNA methylation in human obesity and diabetes. Nat Commun 2023; 14:2784. [PMID: 37188674 PMCID: PMC10185556 DOI: 10.1038/s41467-023-38439-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 05/03/2023] [Indexed: 05/17/2023] Open
Abstract
DNA methylation variations are prevalent in human obesity but evidence of a causative role in disease pathogenesis is limited. Here, we combine epigenome-wide association and integrative genomics to investigate the impact of adipocyte DNA methylation variations in human obesity. We discover extensive DNA methylation changes that are robustly associated with obesity (N = 190 samples, 691 loci in subcutaneous and 173 loci in visceral adipocytes, P < 1 × 10-7). We connect obesity-associated methylation variations to transcriptomic changes at >500 target genes, and identify putative methylation-transcription factor interactions. Through Mendelian Randomisation, we infer causal effects of methylation on obesity and obesity-induced metabolic disturbances at 59 independent loci. Targeted methylation sequencing, CRISPR-activation and gene silencing in adipocytes, further identifies regional methylation variations, underlying regulatory elements and novel cellular metabolic effects. Our results indicate DNA methylation is an important determinant of human obesity and its metabolic complications, and reveal mechanisms through which altered methylation may impact adipocyte functions.
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Affiliation(s)
- Liam McAllan
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, W12 0NN, UK
- MRC London Institute of Medical Sciences, London, W12 0NN, UK
| | - Damir Baranasic
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, W12 0NN, UK
- MRC London Institute of Medical Sciences, London, W12 0NN, UK
| | - Sergio Villicaña
- Department of Twin Research and Genetic Epidemiology, King's College London, London, UK
| | - Scarlett Brown
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, W12 0NN, UK
- MRC London Institute of Medical Sciences, London, W12 0NN, UK
| | - Weihua Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, W2 1PG, UK
- Department of Cardiology, Ealing Hospital, London North West University Healthcare NHS Trust, Middlesex, UB1 3HW, UK
| | - Benjamin Lehne
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, W2 1PG, UK
| | - Marco Adamo
- UCLH Bariatric Centre for Weight Loss, Weight Management and Metabolic and Endocrine Surgery, University College London Hospitals, Ground Floor West Wing, 250 Euston Road, London, NW1 2PG, UK
| | - Andrew Jenkinson
- UCLH Bariatric Centre for Weight Loss, Weight Management and Metabolic and Endocrine Surgery, University College London Hospitals, Ground Floor West Wing, 250 Euston Road, London, NW1 2PG, UK
| | - Mohamed Elkalaawy
- UCLH Bariatric Centre for Weight Loss, Weight Management and Metabolic and Endocrine Surgery, University College London Hospitals, Ground Floor West Wing, 250 Euston Road, London, NW1 2PG, UK
| | - Borzoueh Mohammadi
- UCLH Bariatric Centre for Weight Loss, Weight Management and Metabolic and Endocrine Surgery, University College London Hospitals, Ground Floor West Wing, 250 Euston Road, London, NW1 2PG, UK
| | - Majid Hashemi
- UCLH Bariatric Centre for Weight Loss, Weight Management and Metabolic and Endocrine Surgery, University College London Hospitals, Ground Floor West Wing, 250 Euston Road, London, NW1 2PG, UK
| | - Nadia Fernandes
- Imperial BRC Genomics Facility, Faculty of Medicine, Imperial College London, London, W12 0NN, UK
| | - Nathalie Lambie
- Imperial BRC Genomics Facility, Faculty of Medicine, Imperial College London, London, W12 0NN, UK
| | - Richard Williams
- Imperial BRC Genomics Facility, Faculty of Medicine, Imperial College London, London, W12 0NN, UK
| | - Colette Christiansen
- Department of Twin Research and Genetic Epidemiology, King's College London, London, UK
- School of Mathematics and Statistics, Faculty of Science, Technology, Engineering and Mathematics, The Open University, Milton Keynes, UK
| | - Youwen Yang
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, W2 1PG, UK
- School of Cardiovascular and Metabolic Medicine and Sciences, James Black Centre, King's College London British Heart Foundation Centre of Excellence, 125 Coldharbour Lane, London, SE5 9NU, UK
| | - Liudmila Zudina
- Department of Clinical & Experimental Medicine, University of Surrey, Guildford, UK
| | - Vasiliki Lagou
- Department of Microbiology and Immunology, Laboratory of Adaptive Immunity, KU Leuven, Leuven, Belgium
- VIB-KU Leuven Center for Brain and Disease Research, Leuven, Belgium
| | - Sili Tan
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
| | | | - James W D King
- MRC London Institute of Medical Sciences, London, W12 0NN, UK
| | - Richie Soong
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
- Department of Pathology, National University Hospital, Singapore, Singapore
| | - Paul Elliott
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, W2 1PG, UK
- MRC Centre for Environment and Health, School of Public Health, Imperial College London, London, UK
- National Institute for Health Research Biomedical Research Centre, Imperial College London, London, UK
| | - James Scott
- National Heart and Lung Institute, Imperial College London, London, W12 0NN, UK
- Imperial College Healthcare NHS Trust, London, W12 0HS, UK
| | - Inga Prokopenko
- Department of Clinical & Experimental Medicine, University of Surrey, Guildford, UK
- People-Centred Artificial Intelligence Institute, University of Surrey, Guildford, UK
- Institute of Biochemistry and Genetics, Ufa Federal Research Centre Russian Academy of Sciences, Ufa, Russian Federation
| | - Inês Cebola
- Section of Genetics and Genomics, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Marie Loh
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, W2 1PG, UK
- Translational Laboratory in Genetic Medicine (TLGM), Agency for Science, Technology and Research (A*STAR), 8A Biomedical Grove, Immunos, Level 5, Singapore, 138648, Singapore
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Boris Lenhard
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, W12 0NN, UK
- MRC London Institute of Medical Sciences, London, W12 0NN, UK
| | - Rachel L Batterham
- UCLH Bariatric Centre for Weight Loss, Weight Management and Metabolic and Endocrine Surgery, University College London Hospitals, Ground Floor West Wing, 250 Euston Road, London, NW1 2PG, UK
- Centre for Obesity Research, Rayne Institute, Department of Medicine, University College, London, WC1E 6JJ, UK
- National Institute of Health Research University College London Hospitals Biomedical Research Centre, London, W1T 7DN, UK
| | - Jordana T Bell
- Department of Twin Research and Genetic Epidemiology, King's College London, London, UK
| | - John C Chambers
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, W2 1PG, UK
- Department of Cardiology, Ealing Hospital, London North West University Healthcare NHS Trust, Middlesex, UB1 3HW, UK
- MRC Centre for Environment and Health, School of Public Health, Imperial College London, London, UK
- Imperial College Healthcare NHS Trust, London, W12 0HS, UK
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore
| | - Jaspal S Kooner
- Department of Cardiology, Ealing Hospital, London North West University Healthcare NHS Trust, Middlesex, UB1 3HW, UK
- MRC Centre for Environment and Health, School of Public Health, Imperial College London, London, UK
- National Heart and Lung Institute, Imperial College London, London, W12 0NN, UK
- Imperial College Healthcare NHS Trust, London, W12 0HS, UK
| | - William R Scott
- Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, W12 0NN, UK.
- MRC London Institute of Medical Sciences, London, W12 0NN, UK.
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, W2 1PG, UK.
- Imperial College Healthcare NHS Trust, London, W12 0HS, UK.
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11
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Bell S, Young JA, List EO, Basu R, Geitgey DK, Lach G, Lee K, Swegan D, Caggiano LJ, Okada S, Kopchick JJ, Berryman DE. Increased Fibrosis in White Adipose Tissue of Male and Female bGH Transgenic Mice Appears Independent of TGF-β Action. Endocrinology 2023; 164:7069260. [PMID: 36869769 DOI: 10.1210/endocr/bqad038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 02/21/2023] [Accepted: 02/24/2023] [Indexed: 03/05/2023]
Abstract
Fibrosis is a pathological state caused by excess deposition of extracellular matrix proteins in a tissue. Male bovine growth hormone (bGH) transgenic mice experience metabolic dysfunction with a marked decrease in lifespan and with increased fibrosis in several tissues including white adipose tissue (WAT), which is more pronounced in the subcutaneous (Sc) depot. The current study expanded on these initial findings to evaluate WAT fibrosis in female bGH mice and the role of transforming growth factor (TGF)-β in the development of WAT fibrosis. Our findings established that female bGH mice, like males, experience a depot-dependent increase in WAT fibrosis, and bGH mice of both sexes have elevated circulating levels of several markers of collagen turnover. Using various methods, TGF-β signaling was found unchanged or decreased-as opposed to an expected increase-despite the marked fibrosis in WAT of bGH mice. However, acute GH treatments in vivo, in vitro, or ex vivo did elicit a modest increase in TGF-β signaling in some experimental systems. Finally, single nucleus RNA sequencing confirmed no perturbation in TGF-β or its receptor gene expression in any WAT cell subpopulations of Sc bGH WAT; however, a striking increase in B lymphocyte infiltration in bGH WAT was observed. Overall, these data suggest that bGH WAT fibrosis is independent of the action of TGF-β and reveals an intriguing shift in immune cells in bGH WAT that should be further explored considering the increasing importance of B cell-mediated WAT fibrosis and pathology.
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Affiliation(s)
- Stephen Bell
- Heritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, USA
- Edison Biotechnology Institute, Ohio University, Athens, OH 45701, USA
| | - Jonathan A Young
- Heritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, USA
- Edison Biotechnology Institute, Ohio University, Athens, OH 45701, USA
| | - Edward O List
- Edison Biotechnology Institute, Ohio University, Athens, OH 45701, USA
| | - Reetobrata Basu
- Edison Biotechnology Institute, Ohio University, Athens, OH 45701, USA
| | | | - Grace Lach
- Heritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, USA
- Edison Biotechnology Institute, Ohio University, Athens, OH 45701, USA
| | - Kevin Lee
- Heritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, USA
- Diabetes Institute, Ohio University, Athens, OH 45701, USA
| | - Deborah Swegan
- College of Arts and Sciences, Ohio University, Athens, OH 45701, USA
| | | | - Shigeru Okada
- Heritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, USA
- Edison Biotechnology Institute, Ohio University, Athens, OH 45701, USA
| | - John J Kopchick
- Heritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, USA
- Edison Biotechnology Institute, Ohio University, Athens, OH 45701, USA
- Diabetes Institute, Ohio University, Athens, OH 45701, USA
| | - Darlene E Berryman
- Heritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, USA
- Edison Biotechnology Institute, Ohio University, Athens, OH 45701, USA
- Diabetes Institute, Ohio University, Athens, OH 45701, USA
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12
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Mirza I, Mohamed A, Deen H, Balaji S, Elsabbahi D, Munasser A, Naquiallah D, Abdulbaseer U, Hassan C, Masrur M, Bianco FM, Ali MM, Mahmoud AM. Obesity-Associated Vitamin D Deficiency Correlates with Adipose Tissue DNA Hypomethylation, Inflammation, and Vascular Dysfunction. Int J Mol Sci 2022; 23:ijms232214377. [PMID: 36430854 PMCID: PMC9694734 DOI: 10.3390/ijms232214377] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/14/2022] [Accepted: 11/17/2022] [Indexed: 11/22/2022] Open
Abstract
Vitamin D (VD) deficiency is a hallmark of obesity and vascular dysfunction. We sought to test the hypothesis that VD deficiency may contribute to obesity-related vascular dysfunction by inducing adipokine hypomethylation and augmented expression. To this end, we collected blood and adipose tissues (ATs) from a cohort of 77 obese participants who were classified as having mild, moderate, or severe VD deficiency. The body composition, vascular reactivity, cardiometabolic profiles, and DNA methylation of 94 inflammation-related adipokines were measured. Our results show that higher degrees of VD deficiency were associated with lower DNA methylation and induced the expression of inflammatory adipokines such as B-cell lymphoma 6 (BCL6), C-X-C Motif Chemokine Ligand 8 (CXCL8), histone deacetylase 5 (HDAC5), interleukin 12A (IL12A), and nuclear factor κB (NFκB) in the ATs. They were also associated with higher BMI and total and visceral fat mass, impaired insulin sensitivity and lipid profiles, AT hypoxia, and higher concentrations of circulating inflammatory markers. Moderate and severe VD deficiency correlated with impaired vasoreactivity of the brachial artery and AT-isolated arterioles, reduced nitric oxide generation, and increased arterial stiffness. In a multivariate regression analysis, the VD deficiency level strongly predicted the adipokine methylation score, systemic inflammation, and microvascular dysfunction. In conclusion, our findings suggest that VD deficiency is a possible contributor to obesity-related adipokine hypomethylation, inflammation, and vascular dysfunction.
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Affiliation(s)
- Imaduddin Mirza
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Ariej Mohamed
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Hania Deen
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Swetha Balaji
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Duaa Elsabbahi
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Amier Munasser
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Dina Naquiallah
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Uzma Abdulbaseer
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Chandra Hassan
- Department of Surgery, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Mario Masrur
- Department of Surgery, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Francesco M. Bianco
- Department of Surgery, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Mohamed M. Ali
- Department of Physical Therapy, College of Applied Health Sciences, The University of Illinois at Chicago, Chicago, IL 60612, USA
| | - Abeer M. Mahmoud
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, College of Medicine, The University of Illinois at Chicago, Chicago, IL 60612, USA
- Department of Kinesiology and Nutrition, College of Applied Health Sciences, The University of Illinois at Chicago, Chicago, IL 60612, USA
- Correspondence:
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13
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Blankenship L, Pratap UP, Yang X, Liu Z, Altwegg KA, Santhamma B, Ramasamy K, Konda S, Chen Y, Lai Z, Zheng S, Sareddy GR, Valente PT, Kost ER, Nair HB, Tekmal RR, Vadlamudi RK, Viswanadhapalli S. Inhibition of LIFR Blocks Adiposity-Driven Endometrioid Endometrial Cancer Growth. Cancers (Basel) 2022; 14:5400. [PMID: 36358818 PMCID: PMC9657203 DOI: 10.3390/cancers14215400] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/21/2022] [Accepted: 10/29/2022] [Indexed: 11/06/2022] Open
Abstract
Endometrial cancer (EC) is the fourth most common cancer in women, and half of the endometrioid EC (EEC) cases are attributable to obesity. However, the underlying mechanism(s) of obesity-driven EEC remain(s) unclear. In this study, we examined whether LIF signaling plays a role in the obesity-driven progression of EEC. RNA-seq analysis of EEC cells stimulated by adipose conditioned medium (ADP-CM) showed upregulation of LIF/LIFR-mediated signaling pathways including JAK/STAT and interleukin pathways. Immunohistochemistry analysis of normal and EEC tissues collected from obese patients revealed that LIF expression is upregulated in EEC tissues compared to the normal endometrium. Treatment of both primary and established EEC cells with ADP-CM increased the expression of LIF and its receptor LIFR and enhanced proliferation of EEC cells. Treatment of EEC cells with the LIFR inhibitor EC359 abolished ADP-CM induced colony formation andcell viability and decreased growth of EEC organoids. Mechanistic studies using Western blotting, RT-qPCR and reporter assays confirmed that ADP-CM activated LIF/LIFR downstream signaling, which can be effectively attenuated by the addition of EC359. In xenograft assays, co-implantation of adipocytes significantly enhanced EEC xenograft tumor growth. Further, treatment with EC359 significantly attenuated adipocyte-induced EEC progression in vivo. Collectively, our data support the premise that LIF/LIFR signaling plays an important role in obesity-driven EEC progression and the LIFR inhibitor EC359 has the potential to suppress adipocyte-driven tumor progression.
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Affiliation(s)
- Logan Blankenship
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA
| | - Uday P. Pratap
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA
| | - Xue Yang
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA
- Department of Obstetrics and Gynecology, Second Xiangya Hospital, Central South University, Changsha 410011, China
| | - Zexuan Liu
- Department of Oncology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Kristin A. Altwegg
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA
- Mays Cancer Center, University of Texas Health San Antonio, San Antonio, TX 78229, USA
| | | | - Kumaraguruparan Ramasamy
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA
| | | | - Yidong Chen
- Greehey Children’s Cancer Research Institute, University of Texas Health San Antonio, San Antonio, TX 78229, USA
- Department of Population Health Sciences, University of Texas Health San Antonio, San Antonio, TX 78229, USA
| | - Zhao Lai
- Greehey Children’s Cancer Research Institute, University of Texas Health San Antonio, San Antonio, TX 78229, USA
- Department of Molecular Medicine, University of Texas Health San Antonio, San Antonio, TX 78229, USA
| | - Siyuan Zheng
- Greehey Children’s Cancer Research Institute, University of Texas Health San Antonio, San Antonio, TX 78229, USA
- Department of Population Health Sciences, University of Texas Health San Antonio, San Antonio, TX 78229, USA
| | - Gangadhara R. Sareddy
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA
- Mays Cancer Center, University of Texas Health San Antonio, San Antonio, TX 78229, USA
| | - Philip T. Valente
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA
| | - Edward R. Kost
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA
| | | | - Rajeshwar R. Tekmal
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA
| | - Ratna K. Vadlamudi
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA
- Mays Cancer Center, University of Texas Health San Antonio, San Antonio, TX 78229, USA
- Audie L. Murphy Division, South Texas Veterans Health Care System, San Antonio, TX 78229, USA
| | - Suryavathi Viswanadhapalli
- Department of Obstetrics and Gynecology, University of Texas Health San Antonio, San Antonio, TX 78229, USA
- Mays Cancer Center, University of Texas Health San Antonio, San Antonio, TX 78229, USA
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14
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Ortiz-Huidobro RI, Larqué C, Velasco M, Chávez-Maldonado JP, Sabido J, Sanchez-Zamora YI, Hiriart M. Sexual dimorphism in the molecular mechanisms of insulin resistance during a critical developmental window in Wistar rats. Cell Commun Signal 2022; 20:154. [PMID: 36224569 PMCID: PMC9554987 DOI: 10.1186/s12964-022-00965-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 08/17/2022] [Indexed: 11/23/2022] Open
Abstract
Background Insulin resistance (IR) is a condition in which the response of organs to insulin is impaired. IR is an early marker of metabolic dysfunction. However, IR also appears in physiological contexts during critical developmental windows. The molecular mechanisms of physiological IR are largely unknown in both sexes. Sexual dimorphism in insulin sensitivity is observed since early stages of development. We propose that during periods of accelerated growth, such as around weaning, at postnatal day 20 (p20) in rats, the kinase S6K1 is overactivated and induces impairment of insulin signaling in its target organs. This work aimed to characterize IR at p20, determine its underlying mechanisms, and identify whether sexual dimorphism in physiological IR occurs during this stage.
Methods We determined systemic insulin sensitivity through insulin tolerance tests, glucose tolerance tests, and blood glucose and insulin levels under fasting and fed conditions at p20 and adult male and female Wistar rats. Furthermore, we quantified levels of S6K1 phosphorylated at threonine 389 (T389) (active form) and its target IRS1 phosphorylated at serine 1101 (S1101) (inhibited form). In addition, we assessed insulin signal transduction by measuring levels of Akt phosphorylated at serine 473 (S473) (active form) in white adipose tissue and skeletal muscle through western blot. Finally, we determined the presence and function of GLUT4 in the plasma membrane by measuring the glucose uptake of adipocytes. Results were compared using two-way ANOVA (With age and sex as factors) and one-way ANOVA with post hoc Tukey’s tests or t-student test in each corresponding case. Statistical significance was considered for P values < 0.05. Results We found that both male and female p20 rats have elevated levels of glucose and insulin, low systemic insulin sensitivity, and glucose intolerance. We identified sex- and tissue-related differences in the activation of insulin signaling proteins in p20 rats compared to adult rats. Conclusions Male and female p20 rats present physiological insulin resistance with differences in the protein activation of insulin signaling. This suggests that S6K1 overactivation and the resulting IRS1 inhibition by phosphorylation at S1101 may modulate to insulin sensitivity in a sex- and tissue-specific manner. Video Abstract
Supplementary Information The online version contains supplementary material available at 10.1186/s12964-022-00965-6. Insulin regulates the synthesis of carbohydrates, lipids and proteins differently between males, and females. One of its primary functions is maintaining adequate blood glucose levels favoring glucose entry in muscle and adipose tissue after food consumption. Insulin resistance (IR) is a condition in which the response of organs to insulin is impaired. IR is frequently associated with metabolic dysfunction such as inflammation, obesity, or type 2 diabetes. However, physiological IR develops in healthy individuals during periods of rapid growth, pregnancy, or aging by mechanisms not fully understood. We studied the postnatal development, specifically around weaning at postnatal day 20 (p20) of Wistar rats. In previous works, we identified insulin resistance during this period in male rats. This work aimed to characterize IR at p20, determine its underlying mechanisms, and identify whether sexual dimorphism in physiological IR occurs during this stage. We found that p20 rats of both sexes have elevated blood glucose and insulin levels, low systemic insulin sensitivity, and glucose intolerance. We identified differences in insulin-regulated protein activation (S6K1, IRS1, Akt, and GLUT4) between sexes in different tissues and adipose tissue depots. Studying these mechanisms and their differences between males and females is essential to understanding insulin actions and their relationship with the possible development of metabolic diseases in both sexes.
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Affiliation(s)
- Rosa Isela Ortiz-Huidobro
- Neurosciences Division, Department of Cognitive Neuroscience, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Carlos Larqué
- Department of Embryology, and Genetics, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Myrian Velasco
- Neurosciences Division, Department of Cognitive Neuroscience, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Juan Pablo Chávez-Maldonado
- Neurosciences Division, Department of Cognitive Neuroscience, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Jean Sabido
- Neurosciences Division, Department of Cognitive Neuroscience, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Yuriko Itzel Sanchez-Zamora
- Neurosciences Division, Department of Cognitive Neuroscience, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Marcia Hiriart
- Neurosciences Division, Department of Cognitive Neuroscience, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Mexico City, Mexico.
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15
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DNA Hypomethylation as a Potential Link between Excessive Alcohol Intake and Cardiometabolic Dysfunction in Morbidly Obese Adults. Biomedicines 2022; 10:biomedicines10081954. [PMID: 36009501 PMCID: PMC9406007 DOI: 10.3390/biomedicines10081954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/09/2022] [Accepted: 08/10/2022] [Indexed: 11/24/2022] Open
Abstract
A large percentage of obese patients in the United States suffer a comorbid substance use disorder, mainly alcohol use. Alcohol consumption interferes with the absorption of dietary methyl donors such as folate required for the one-carbon metabolism pathway and subsequently for DNA methylation. In this study, we assessed the association between alcohol consumption and DNA methylation in obese subjects. We obtained visceral adipose tissue (VAT) biopsies from bariatric patients. DNA methylation of 94 genes implicated in inflammation and immunity were analyzed in VAT in relation to alcohol consumption data obtained via questionnaires. Vasoreactivity was measured in the brachial artery and the VAT-isolated arterioles. Pro-inflammatory genes were significantly hypomethylated in the heavy drinking category correlating with higher levels of circulating inflammatory cytokines. Alcohol consumption correlated positively with body mass index (BMI), fat percentage, insulin resistance, impaired lipid profile, and systemic inflammation and negatively with plasma folate and vitamin B12, inflammatory gene DNA methylation, and vasoreactivity. In conclusion, these data suggest that alcohol intake is associated with lower DNA methylation and higher inflammation and cardiometabolic risk in obese individuals.
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16
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Malacrida B, Pearce OM, Balkwill FR. Building invitro 3D human multicellular models of high-grade serous ovarian cancer. STAR Protoc 2022; 3:101086. [PMID: 35072115 PMCID: PMC8761773 DOI: 10.1016/j.xpro.2021.101086] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Three-dimensional (3D), multicellular invitro models provide a useful platform for studying human cancer biology, particularly through deconvolution of the tumor microenvironment, or where animal models do not recapitulate the human condition. Here, we detail a protocol for building human multicellular models made of patient-derived primary cells and malignant cell lines, which recapitulate features of the tumor microenvironment. This protocol is optimized for building 3D models of high-grade serous ovarian cancer omental metastasis but can be adapted for modeling other cancers. For complete details on the use and execution of this profile, please refer to Delaine-Smith et al. (2021) and Malacrida et al. (2021).
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Affiliation(s)
- Beatrice Malacrida
- Centre for Tumour Microenvironment, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
| | - Oliver M.T. Pearce
- Centre for Tumour Microenvironment, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
| | - Frances R. Balkwill
- Centre for Tumour Microenvironment, Barts Cancer Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
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17
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Quintero Sierra LA, Busato A, Zingaretti N, Conti A, Biswas R, Governa M, Vigato E, Parodi PC, Bernardi P, Sbarbati A, Conti G. Tissue-Material Integration and Biostimulation Study of Collagen Acellular Matrices. Tissue Eng Regen Med 2022; 19:477-490. [PMID: 35244884 PMCID: PMC9130448 DOI: 10.1007/s13770-021-00420-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 12/10/2021] [Accepted: 12/12/2021] [Indexed: 11/04/2022] Open
Abstract
Background: Breast reconstruction after mastectomy using silicone implants is a surgical procedure that occasionally leads to capsular contracture formation. This phenomenon constitutes an important and persistent cause of morbidity, and no successful therapies are available to date. Recently, the use of acellular membranes as a protective material for silicone prostheses has been gaining attention due to their ability to prevent this adverse outcome. For this reason, the evaluation of the tissue-material integration and the induced biostimulation by acellular membranes results crucial. Evaluation of in vivo tissue integration and biostimulation induced by three different natural acellular collagen membranes. Methods: Scanning electron microscopy was performed to analyse the membrane porosity and cells-biomaterial interaction in vitro, both in dry and wet conditions. Adipose-derived stem cells were cultured in the presence of membranes, and the colonisation capacity and differentiation potential of cells were assessed. In vivo tests and ex vivo analyses have been performed to evaluate dermal integration, absorption degree and biostimulation induced by the evaluated membrane. Results: Analysis performed in vitro on the three different acellular dermal matrices evidenced that porosity and the morphological structure of membranes influence the liquid swelling ratio, affecting the cell mobility and the colonisation capacity. Moreover, the evaluated membranes influenced in different manner the adipose derived stem cells differentiation and their survival. In vivo investigation indicated that the absorption degree and the fluid accumulation surrounding the implant were membrane-dependent. Finally, ex vivo analysis confirmed the membrane-dependent behavior revealing different degree of tissue integration and biostimulation, such as adipogenic stimulation. Conclusion: The physico-chemical characteristics of the membranes play a key role in the biostimulation of the cellular environment inducing the development of well-organized adipose tissue.
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Affiliation(s)
| | - Alice Busato
- Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Strada le Grazie 8, 37134, Verona, Italy
| | - Nicola Zingaretti
- Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Strada le Grazie 8, 37134, Verona, Italy.,Clinic of Plastic and Reconstructive Surgery, Academic Hospital of Udine, Department of Medical Area (DAME), University of Udine, Piazzale Santa Maria della Misericordia 15, 33100, Udine, Italy
| | - Anita Conti
- Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Strada le Grazie 8, 37134, Verona, Italy
| | - Reetuparna Biswas
- Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Strada le Grazie 8, 37134, Verona, Italy
| | - Maurizio Governa
- Department of Plastic and Reconstructive Surgery, Azienda Ospedaliera Universitaria Integrata, Piazzale Aristide Stefani 1, 37126, Verona, Italy
| | - Enrico Vigato
- Department of Plastic and Reconstructive Surgery, Azienda Ospedaliera Universitaria Integrata, Piazzale Aristide Stefani 1, 37126, Verona, Italy
| | - Pier Camillo Parodi
- Clinic of Plastic and Reconstructive Surgery, Academic Hospital of Udine, Department of Medical Area (DAME), University of Udine, Piazzale Santa Maria della Misericordia 15, 33100, Udine, Italy
| | - Paolo Bernardi
- Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Strada le Grazie 8, 37134, Verona, Italy
| | - Andrea Sbarbati
- Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Strada le Grazie 8, 37134, Verona, Italy
| | - Giamaica Conti
- Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Strada le Grazie 8, 37134, Verona, Italy
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18
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Hruska P, Kucera J, Pekar M, Holéczy P, Mazur M, Buzga M, Kuruczova D, Lenart P, Fialova Kucerova J, Potesil D, Zdrahal Z, Bienertova-Vasku J. Proteomic Signatures of Human Visceral and Subcutaneous Adipocytes. J Clin Endocrinol Metab 2022; 107:755-775. [PMID: 34669916 PMCID: PMC8851937 DOI: 10.1210/clinem/dgab756] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Indexed: 11/21/2022]
Abstract
CONTEXT Adipose tissue distribution is a key factor influencing metabolic health and risk in obesity-associated comorbidities. OBJECTIVE Here we aim to compare the proteomic profiles of mature adipocytes from different depots. METHODS Abdominal subcutaneous (SA) and omental visceral adipocytes (VA) were isolated from paired adipose tissue biopsies obtained during bariatric surgery on 19 severely obese women (body mass index > 30 kg/m2) and analyzed using state-of-the-art mass spectrometry. Differential expression analysis and weighted gene co-expression network analysis (WGCNA) were performed to investigate proteome signature properties and to examine a possible association of the protein expression with the clinical data. RESULTS We identified 3686 protein groups and found 1140 differentially expressed proteins (adj. P value < 0.05), of which 576 proteins were upregulated in SA and 564 in VA samples. We provide a global protein profile of abdominal SA and omental VA, present the most differentially expressed pathways and processes distinguishing SA from VA, and correlate them with clinical and body composition data. We show that SA are significantly more active in processes linked to vesicular transport and secretion, and to increased lipid metabolism activity. Conversely, the expression of proteins involved in the mitochondrial energy metabolism and translational or biosynthetic activity is higher in VA. CONCLUSION Our analysis represents a valuable resource of protein expression profiles in abdominal SA and omental VA, highlighting key differences in their role in obesity.
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Affiliation(s)
- Pavel Hruska
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, 62500 Brno, Czech Republic
- Central European Institute of Technology, Masaryk University, 62500 Brno, Czech Republic
- Research Centre for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, 62500 Brno, Czech Republic
| | - Jan Kucera
- Research Centre for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, 62500 Brno, Czech Republic
| | - Matej Pekar
- Department of Surgery, Vitkovice Hospital, 70300 Ostrava, Czech Republic
- Department of Physiology, Faculty of Medicine, Masaryk University, 70300 Brno, Czech Republic
| | - Pavol Holéczy
- Department of Surgery, Vitkovice Hospital, 70300 Ostrava, Czech Republic
- Department of Surgical Disciplines, Faculty of Medicine, University of Ostrava, 70300 Ostrava, Czech Republic
| | - Miloslav Mazur
- Department of Surgery, Vitkovice Hospital, 70300 Ostrava, Czech Republic
| | - Marek Buzga
- Department of Human Movement Studies, Faculty of Education, University of Ostrava, 70900 Ostrava, Czech Republic
- Department of Physiology and Pathohysiology, Faculty of Medicine, University of Ostrava, 70300 Ostrava, Czech Republic
| | - Daniela Kuruczova
- Research Centre for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, 62500 Brno, Czech Republic
| | - Peter Lenart
- Research Centre for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, 62500 Brno, Czech Republic
| | - Jana Fialova Kucerova
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, 62500 Brno, Czech Republic
| | - David Potesil
- Central European Institute of Technology, Masaryk University, 62500 Brno, Czech Republic
| | - Zbynek Zdrahal
- Central European Institute of Technology, Masaryk University, 62500 Brno, Czech Republic
| | - Julie Bienertova-Vasku
- Department of Pathological Physiology, Faculty of Medicine, Masaryk University, 62500 Brno, Czech Republic
- Research Centre for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, 62500 Brno, Czech Republic
- Correspondence: Julie Dobrovolna (previously Bienertova-Vasku), Department of Pathological Physiology, Faculty of Medicine, Masaryk University, Kamenice 5, Building A18, Brno 625 00, Czech Republic.
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19
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Sinitsky MY, Dyleva YA, Uchasova EG, Belik EV, Yuzhalin AE, Gruzdeva OV, Matveeva VG, Ponasenko AV. Adipokine gene expression in adipocytes isolated from different fat depots of coronary artery disease patients. Arch Physiol Biochem 2022; 128:261-269. [PMID: 31595792 DOI: 10.1080/13813455.2019.1674338] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
To compare DPP4, LCN2, NAMPT, ITLN1, APLN mRNA levels in adipocytes isolated from the biopsies of subcutaneous, epicardial and perivascular fat obtained from 25 patients with coronary artery disease. Gene expression signature was determined by RT-qPCR with hydrolysis probes. We found DPP4 and APLN mRNA was higher expressed only in adipocytes isolated from epicardial adipose tissue compared to the subcutaneous fat. The ITLN1 gene was overexpressed in epicardial adipose tissue compared to both subcutaneous and perivascular tissues. APLN mRNA expression was positively correlated with total and LDL cholesterol plasma level, and DPP4 mRNA expression - with VLDL cholesterol concentration. Thus, adipocytes isolated from different adipose depots are characterised by differential gene expression of adipokines. Epicardial adipose tissue is of particular interest in the context of its function, molecular and genetic mechanisms of regulation of the cardiovascular system and as a therapeutic target for correction of adipose tissue-induced effects on health.
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Affiliation(s)
- Maxim Yu Sinitsky
- Laboratory of Genome Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russian Federation
| | - Yulia A Dyleva
- Laboratory of Homeostasis, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russian Federation
| | - Evgenya G Uchasova
- Laboratory of Homeostasis, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russian Federation
| | - Ekaterina V Belik
- Laboratory of Homeostasis, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russian Federation
| | - Arseniy E Yuzhalin
- Laboratory of Fundamental Aspects of Atherosclerosis, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russian Federation
| | - Olga V Gruzdeva
- Laboratory of Homeostasis, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russian Federation
| | - Vera G Matveeva
- Laboratory of Cell Technologies, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russian Federation
| | - Anastasia V Ponasenko
- Laboratory of Genome Medicine, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russian Federation
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Adipose Tissue-Breast Cancer Crosstalk Leads to Increased Tumor Lipogenesis Associated with Enhanced Tumor Growth. Int J Mol Sci 2021; 22:ijms222111881. [PMID: 34769312 PMCID: PMC8585035 DOI: 10.3390/ijms222111881] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 10/28/2021] [Accepted: 10/29/2021] [Indexed: 12/12/2022] Open
Abstract
We sought to identify therapeutic targets for breast cancer by investigating the metabolic symbiosis between breast cancer and adipose tissue. To this end, we compared orthotopic E0771 breast cancer tumors that were in direct contact with adipose tissue with ectopic E0771 tumors in mice. Orthotopic tumors grew faster and displayed increased de novo lipogenesis compared to ectopic tumors. Adipocytes release large amounts of lactate, and we found that both lactate pretreatment and adipose tissue co-culture augmented de novo lipogenesis in E0771 cells. Continuous treatment with the selective FASN inhibitor Fasnall dose-dependently decreased the E0771 viability in vitro. However, daily Fasnall injections were effective only in 50% of the tumors, while the other 50% displayed accelerated growth. These opposing effects of Fasnall in vivo was recapitulated in vitro; intermittent Fasnall treatment increased the E0771 viability at lower concentrations and suppressed the viability at higher concentrations. In conclusion, our data suggest that adipose tissue enhances tumor growth by stimulating lipogenesis. However, targeting lipogenesis alone can be deleterious. To circumvent the tumor's ability to adapt to treatment, we therefore believe that it is necessary to apply an aggressive treatment, preferably targeting several metabolic pathways simultaneously, together with conventional therapy.
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21
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Goddi A, Carmona A, Schroedl L, White JM, Piron MJ, De Leon A, Casimiro I, Hoffman A, Gonzalez Porras MA, Brey EM, Brady MJ, Cohen RN. Laminin-α4 Is Upregulated in Both Human and Murine Models of Obesity. Front Endocrinol (Lausanne) 2021; 12:698621. [PMID: 34394003 PMCID: PMC8355986 DOI: 10.3389/fendo.2021.698621] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 07/06/2021] [Indexed: 11/13/2022] Open
Abstract
Obesity affects nearly one billion globally and can lead to life-threatening sequelae. Consequently, there is an urgent need for novel therapeutics. We have previously shown that laminin, alpha 4 (Lama4) knockout in mice leads to resistance to adipose tissue accumulation; however, the relationship between LAMA4 and obesity in humans has not been established. In this study we measured laminin-α chain and collagen mRNA expression in the subcutaneous white adipose tissue (sWAT) of mice placed on chow (RCD) or 45% high fat diet (HFD) for 8 weeks, and also in HFD mice then placed on a "weight loss" regimen (8 weeks HFD followed by 6 weeks RCD). To assess extracellular matrix (ECM) components in humans with obesity, laminin subunit alpha mRNA and protein expression was measured in sWAT biopsies of female control subjects (BMI<30) or subjects with obesity undergoing bariatric surgery at the University of Chicago Medical Center (BMI>35) both before and three months after surgery. Lama4 was significantly higher in sWAT of HFD compared to RCD mice at both the RNA and protein level (p<0.001, p<0.05 respectively). sWAT from human subjects with obesity also showed significantly higher LAMA4 mRNA (p<0.01) and LAMA4 protein expression (p<0.05) than controls. Interestingly, even though LAMA4 expression was increased in both humans and murine models of obesity, no significant difference in Lama4 or LAMA4 expression was detected following short-term weight loss in either mouse or human samples, respectively. From these results we propose a significant association between obesity and elevated LAMA4 expression in humans, as well as in mouse models of obesity. Further studies should clarify the mechanisms underlying this association to target LAMA4 effectively as a potential therapy for obesity.
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Affiliation(s)
- Anna Goddi
- Committee on Molecular Metabolism and Nutrition, The University of Chicago, Chicago, IL, United States
| | - Alanis Carmona
- Section of Endocrinology, Diabetes, and Metabolism, The University of Chicago, Chicago, IL, United States
| | - Liesl Schroedl
- Pritzker School of Medicine, The University of Chicago, Chicago, IL, United States
| | - Jeremy M. White
- Committee on Molecular Metabolism and Nutrition, The University of Chicago, Chicago, IL, United States
| | - Matthew J. Piron
- Section of Endocrinology, Diabetes, and Metabolism, The University of Chicago, Chicago, IL, United States
| | - Avelino De Leon
- Committee on Molecular Metabolism and Nutrition, The University of Chicago, Chicago, IL, United States
| | - Isabel Casimiro
- Section of Endocrinology, Diabetes, and Metabolism, The University of Chicago, Chicago, IL, United States
| | - Alexandria Hoffman
- Committee on Molecular Metabolism and Nutrition, The University of Chicago, Chicago, IL, United States
| | - Maria A. Gonzalez Porras
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, TX, United States
| | - Eric M. Brey
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, TX, United States
| | - Matthew J. Brady
- Committee on Molecular Metabolism and Nutrition, The University of Chicago, Chicago, IL, United States
- Section of Endocrinology, Diabetes, and Metabolism, The University of Chicago, Chicago, IL, United States
| | - Ronald N. Cohen
- Committee on Molecular Metabolism and Nutrition, The University of Chicago, Chicago, IL, United States
- Section of Endocrinology, Diabetes, and Metabolism, The University of Chicago, Chicago, IL, United States
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22
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Fontaine A, Bellanger D, Guibon R, Bruyère F, Brisson L, Fromont G. Lipophagy and prostate cancer: association with disease aggressiveness and proximity to periprostatic adipose tissue. J Pathol 2021; 255:166-176. [PMID: 34219239 DOI: 10.1002/path.5754] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 06/15/2021] [Accepted: 06/29/2021] [Indexed: 01/09/2023]
Abstract
The prostate gland is surrounded by periprostatic adipose tissue (PPAT), which is believed to play a role in prostate cancer (PCa) progression. Cancer cells can take up lipids from the microenvironment and store them in lipid droplets (LDs). Fatty acids released from LDs are used by PCa cells as preferential metabolic fuels to provide energy and promote cancer progression. Recently, fatty acids have been associated with autophagy, a cellular recycling pathway. Lipophagy is a selective form of autophagy involved in LD degradation, the role of which in PCa progression remains unknown. Here, we explored markers of autophagy and lipophagy in human PCa tissues in correlation with factors of aggressiveness, and we evaluated the influence of PPAT adipocytes on autophagy and lipophagy. We analyzed markers of autophagy (p62, LC3), lipid droplets (PLIN and Oil Red O), androgen receptor (AR), proliferation (Ki67), and epithelial-mesenchymal transition (Zeb1) on 465 PCa samples. Co-cultures of PCa cell lines PC3 and 22RV1 with adipocytes isolated from patients' PPAT were used to analyze the influence of PPAT on autophagy and lipophagy in vitro. In human PCa tissues, we observed a correlation between markers of LD and those of autophagy, which are associated with clinical and biological factors of disease aggressiveness. In addition, PLIN staining was associated with AR expression. In locally advanced PCa, p62, LC3, and PLIN were increased in extraprostatic areas where cancer cells are in contact with PPAT. Co-culture of PCa cell lines with adipocytes decreased autophagy activity and increased LD flux in PC3 cells. These results suggest an active process of lipophagy in PCa, linked to disease aggressiveness, to the proximity of PPAT, and induced in vitro in co-culture with adipocytes. Lipophagy is therefore likely to be a crucial player in PCa progression. © 2021 The Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Alix Fontaine
- Department of Pathology, Bretonneau Hospital, CHU - University of Tours, Tours, France
| | | | - Roseline Guibon
- Department of Pathology, Bretonneau Hospital, CHU - University of Tours, Tours, France.,Inserm UMR U1069, Tours, France
| | - Franck Bruyère
- Department of Urology, Bretonneau Hospital, CHU - University of Tours, Tours, France
| | | | - Gaelle Fromont
- Department of Pathology, Bretonneau Hospital, CHU - University of Tours, Tours, France.,Inserm UMR U1069, Tours, France
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23
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Tucci J, Chen T, Margulis K, Orgel E, Paszkiewicz RL, Cohen MD, Oberley MJ, Wahhab R, Jones AE, Divakaruni AS, Hsu CC, Noll SE, Sheng X, Zare RN, Mittelman SD. Adipocytes Provide Fatty Acids to Acute Lymphoblastic Leukemia Cells. Front Oncol 2021; 11:665763. [PMID: 33968771 PMCID: PMC8100891 DOI: 10.3389/fonc.2021.665763] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 04/06/2021] [Indexed: 12/25/2022] Open
Abstract
Background There is increasing evidence that adipocytes play an active role in the cancer microenvironment. We have previously reported that adipocytes interact with acute lymphoblastic leukemia (ALL) cells, contributing to chemotherapy resistance and treatment failure. In the present study, we investigated whether part of this resistance is due to adipocyte provision of lipids to ALL cells. Methods We cultured 3T3-L1 adipocytes, and tested whether ALL cells or ALL-released cytokines induced FFA release. We investigated whether ALL cells took up these FFA, and using fluorescent tagged BODIPY-FFA and lipidomics, evaluated which lipid moieties were being transferred from adipocytes to ALL. We evaluated the effects of adipocyte-derived lipids on ALL cell metabolism using a Seahorse XF analyzer and expression of enzymes important for lipid metabolism, and tested whether these lipids could protect ALL cells from chemotherapy. Finally, we evaluated a panel of lipid synthesis and metabolism inhibitors to determine which were affected by the presence of adipocytes. Results Adipocytes release free fatty acids (FFA) when in the presence of ALL cells. These FFA are taken up by the ALL cells and incorporated into triglycerides and phospholipids. Some of these lipids are stored in lipid droplets, which can be utilized in states of fuel deprivation. Adipocytes preferentially release monounsaturated FFA, and this can be attenuated by inhibiting the desaturating enzyme steroyl-CoA decarboxylase-1 (SCD1). Adipocyte-derived FFA can relieve ALL cell endogenous lipogenesis and reverse the cytotoxicity of pharmacological acetyl-CoA carboxylase (ACC) inhibition. Further, adipocytes alter ALL cell metabolism, shifting them from glucose to FFA oxidation. Interestingly, the unsaturated fatty acid, oleic acid, protects ALL cells from modest concentrations of chemotherapy, such as those that might be present in the ALL microenvironment. In addition, targeting lipid synthesis and metabolism can potentially reverse adipocyte protection of ALL cells. Conclusion These findings uncover a previously unidentified interaction between ALL cells and adipocytes, leading to transfer of FFA for use as a metabolic fuel and macromolecule building block. This interaction may contribute to ALL resistance to chemotherapy, and could potentially be targeted to improve ALL treatment outcome.
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Affiliation(s)
- Jonathan Tucci
- Diabetes and Obesity Program, Center for Endocrinology, Diabetes and Metabolism, Children's Hospital Los Angeles, Los Angeles, CA, United States
| | - Ting Chen
- Division of Pediatric Endocrinology, University of California Los Angeles (UCLA) Children's Discovery and Innovation Institute, David Geffen School of Medicine UCLA, Los Angeles, CA, United States
| | - Katherine Margulis
- Department of Chemistry, Stanford University, Stanford, CA, United States.,The Institute for Drug Research, School of Pharmacy, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Etan Orgel
- Cancer and Blood Disease Institute, Children's Hospital Los Angeles, Los Angeles, CA, United States
| | - Rebecca L Paszkiewicz
- Division of Pediatric Endocrinology, University of California Los Angeles (UCLA) Children's Discovery and Innovation Institute, David Geffen School of Medicine UCLA, Los Angeles, CA, United States
| | - Michael D Cohen
- Division of Pediatric Endocrinology, University of California Los Angeles (UCLA) Children's Discovery and Innovation Institute, David Geffen School of Medicine UCLA, Los Angeles, CA, United States
| | - Matthew J Oberley
- Department of Pathology, Children's Hospital Los Angeles, Los Angeles, CA, United States
| | - Rachel Wahhab
- Diabetes and Obesity Program, Center for Endocrinology, Diabetes and Metabolism, Children's Hospital Los Angeles, Los Angeles, CA, United States
| | - Anthony E Jones
- Department of Molecular and Medical Pharmacology, UCLA David Geffen School of Medicine, Los Angeles, CA, United States
| | - Ajit S Divakaruni
- Department of Molecular and Medical Pharmacology, UCLA David Geffen School of Medicine, Los Angeles, CA, United States
| | - Cheng-Chih Hsu
- Department of Chemistry, Stanford University, Stanford, CA, United States.,Department of Chemistry, National Taiwan University, Taipei, Taiwan
| | - Sarah E Noll
- Department of Chemistry, Stanford University, Stanford, CA, United States
| | - Xia Sheng
- Diabetes and Obesity Program, Center for Endocrinology, Diabetes and Metabolism, Children's Hospital Los Angeles, Los Angeles, CA, United States
| | - Richard N Zare
- Department of Chemistry, Stanford University, Stanford, CA, United States
| | - Steven D Mittelman
- Diabetes and Obesity Program, Center for Endocrinology, Diabetes and Metabolism, Children's Hospital Los Angeles, Los Angeles, CA, United States.,Division of Pediatric Endocrinology, University of California Los Angeles (UCLA) Children's Discovery and Innovation Institute, David Geffen School of Medicine UCLA, Los Angeles, CA, United States
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24
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Shaihov-Teper O, Ram E, Ballan N, Brzezinski RY, Naftali-Shani N, Masoud R, Ziv T, Lewis N, Schary Y, Levin-Kotler LP, Volvovitch D, Zuroff EM, Amunts S, Regev-Rudzki N, Sternik L, Raanani E, Gepstein L, Leor J. Extracellular Vesicles From Epicardial Fat Facilitate Atrial Fibrillation. Circulation 2021; 143:2475-2493. [PMID: 33793321 DOI: 10.1161/circulationaha.120.052009] [Citation(s) in RCA: 95] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND The role of epicardial fat (eFat)-derived extracellular vesicles (EVs) in the pathogenesis of atrial fibrillation (AF) has never been studied. We tested the hypothesis that eFat-EVs transmit proinflammatory, profibrotic, and proarrhythmic molecules that induce atrial myopathy and fibrillation. METHODS We collected eFat specimens from patients with (n=32) and without AF (n=30) during elective heart surgery. eFat samples were grown as organ cultures, and the culture medium was collected every 2 days. We then isolated and purified eFat-EVs from the culture medium, and analyzed the EV number, size, morphology, specific markers, encapsulated cytokines, proteome, and microRNAs. Next, we evaluated the biological effects of unpurified and purified EVs on atrial mesenchymal stromal cells and endothelial cells in vitro. To establish a causal association between eFat-EVs and vulnerability to AF, we modeled AF in vitro using induced pluripotent stem cell-derived cardiomyocytes. RESULTS Microscopic examination revealed excessive inflammation, fibrosis, and apoptosis in fresh and cultured eFat tissues. Cultured explants from patients with AF secreted more EVs and harbored greater amounts of proinflammatory and profibrotic cytokines, and profibrotic microRNA, as well, than those without AF. The proteomic analysis confirmed the distinctive profile of purified eFat-EVs from patients with AF. In vitro, purified and unpurified eFat-EVs from patients with AF had a greater effect on proliferation and migration of human mesenchymal stromal cells and endothelial cells, compared with eFat-EVs from patients without AF. Last, whereas eFat-EVs from patients with and without AF shortened the action potential duration of induced pluripotent stem cell-derived cardiomyocytes, only eFat-EVs from patients with AF induced sustained reentry (rotor) in induced pluripotent stem cell-derived cardiomyocytes. CONCLUSIONS We show, for the first time, a distinctive proinflammatory, profibrotic, and proarrhythmic signature of eFat-EVs from patients with AF. Our findings uncover another pathway by which eFat promotes the development of atrial myopathy and fibrillation.
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Affiliation(s)
- Olga Shaihov-Teper
- Neufeld and Tamman Cardiovascular Research Institutes (O.S.-T., R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., J.L.), Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Israel.,Heart Center, Sheba Medical Center, Tel Hashomer, Israel (O.S.-T., E. Ram, R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., D.V., E.M.Z., S.A., L.S., E. Raanani, J.L.)
| | - Eilon Ram
- Department of Cardiac Surgery, Leviev Cardiothoracic and Vascular Center (E. Ram, E.M.Z., S.A., L.S., E. Raanani), Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Israel.,Heart Center, Sheba Medical Center, Tel Hashomer, Israel (O.S.-T., E. Ram, R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., D.V., E.M.Z., S.A., L.S., E. Raanani, J.L.)
| | - Nimer Ballan
- The Sohnis Family Laboratory for Cardiac Electrophysiology and Regenerative Medicine, Rappaport Faculty of Medicine, Technion Institute of Technology, Israel (N.B., L.G.)
| | - Rafael Y Brzezinski
- Neufeld and Tamman Cardiovascular Research Institutes (O.S.-T., R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., J.L.), Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Israel.,Heart Center, Sheba Medical Center, Tel Hashomer, Israel (O.S.-T., E. Ram, R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., D.V., E.M.Z., S.A., L.S., E. Raanani, J.L.)
| | - Nili Naftali-Shani
- Neufeld and Tamman Cardiovascular Research Institutes (O.S.-T., R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., J.L.), Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Israel.,Heart Center, Sheba Medical Center, Tel Hashomer, Israel (O.S.-T., E. Ram, R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., D.V., E.M.Z., S.A., L.S., E. Raanani, J.L.)
| | - Rula Masoud
- Cancer Research Center, Chaim Sheba Medical Center, Tel Hashomer, Israel (R.M.)
| | - Tamar Ziv
- Smoler Proteomics Center, Faculty of Biology, Technion-Israel Institute of Technology, Haifa, Israel (T.Z.)
| | - Nir Lewis
- Neufeld and Tamman Cardiovascular Research Institutes (O.S.-T., R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., J.L.), Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Israel.,Heart Center, Sheba Medical Center, Tel Hashomer, Israel (O.S.-T., E. Ram, R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., D.V., E.M.Z., S.A., L.S., E. Raanani, J.L.)
| | - Yeshai Schary
- Neufeld and Tamman Cardiovascular Research Institutes (O.S.-T., R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., J.L.), Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Israel.,Heart Center, Sheba Medical Center, Tel Hashomer, Israel (O.S.-T., E. Ram, R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., D.V., E.M.Z., S.A., L.S., E. Raanani, J.L.)
| | - La-Paz Levin-Kotler
- Neufeld and Tamman Cardiovascular Research Institutes (O.S.-T., R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., J.L.), Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Israel.,Heart Center, Sheba Medical Center, Tel Hashomer, Israel (O.S.-T., E. Ram, R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., D.V., E.M.Z., S.A., L.S., E. Raanani, J.L.)
| | - David Volvovitch
- Heart Center, Sheba Medical Center, Tel Hashomer, Israel (O.S.-T., E. Ram, R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., D.V., E.M.Z., S.A., L.S., E. Raanani, J.L.)
| | - Elchanan M Zuroff
- Department of Cardiac Surgery, Leviev Cardiothoracic and Vascular Center (E. Ram, E.M.Z., S.A., L.S., E. Raanani), Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Israel.,Heart Center, Sheba Medical Center, Tel Hashomer, Israel (O.S.-T., E. Ram, R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., D.V., E.M.Z., S.A., L.S., E. Raanani, J.L.)
| | - Sergei Amunts
- Department of Cardiac Surgery, Leviev Cardiothoracic and Vascular Center (E. Ram, E.M.Z., S.A., L.S., E. Raanani), Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Israel.,Heart Center, Sheba Medical Center, Tel Hashomer, Israel (O.S.-T., E. Ram, R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., D.V., E.M.Z., S.A., L.S., E. Raanani, J.L.)
| | - Neta Regev-Rudzki
- Department of Biomolecular Sciences, Weizmann Institute of Science, Rehovot, Israel (N.R.-R.)
| | - Leonid Sternik
- Department of Cardiac Surgery, Leviev Cardiothoracic and Vascular Center (E. Ram, E.M.Z., S.A., L.S., E. Raanani), Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Israel.,Heart Center, Sheba Medical Center, Tel Hashomer, Israel (O.S.-T., E. Ram, R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., D.V., E.M.Z., S.A., L.S., E. Raanani, J.L.)
| | - Ehud Raanani
- Department of Cardiac Surgery, Leviev Cardiothoracic and Vascular Center (E. Ram, E.M.Z., S.A., L.S., E. Raanani), Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Israel.,Heart Center, Sheba Medical Center, Tel Hashomer, Israel (O.S.-T., E. Ram, R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., D.V., E.M.Z., S.A., L.S., E. Raanani, J.L.)
| | - Lior Gepstein
- The Sohnis Family Laboratory for Cardiac Electrophysiology and Regenerative Medicine, Rappaport Faculty of Medicine, Technion Institute of Technology, Israel (N.B., L.G.)
| | - Jonathan Leor
- Neufeld and Tamman Cardiovascular Research Institutes (O.S.-T., R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., J.L.), Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Israel.,Heart Center, Sheba Medical Center, Tel Hashomer, Israel (O.S.-T., E. Ram, R.Y.B., N.N.-S., N.L., Y.S., L.-P.L.-K., D.V., E.M.Z., S.A., L.S., E. Raanani, J.L.)
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25
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Huang M, Narita S, Koizumi A, Nara T, Numakura K, Satoh S, Nanjo H, Habuchi T. Macrophage inhibitory cytokine-1 induced by a high-fat diet promotes prostate cancer progression by stimulating tumor-promoting cytokine production from tumor stromal cells. Cancer Commun (Lond) 2021; 41:389-403. [PMID: 33773090 PMCID: PMC8118591 DOI: 10.1002/cac2.12137] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/29/2020] [Accepted: 01/17/2021] [Indexed: 12/18/2022] Open
Abstract
Background Recent studies have indicated that a high‐fat diet (HFD) and/or HFD‐induced obesity may influence prostate cancer (PCa) progression, but the role of HFD in PCa microenvironment is unclear. This study aimed to delineate the molecular mechanisms of PCa progression under HFD milieus and define the stromal microenvironment focusing on macrophage inhibitory cytokine‐1 (MIC‐1) activation. Methods We investigated the effects of HFD on PCa stromal microenvironment and MIC‐1 signaling activation using PC‐3M‐luc‐C6 PCa model mice fed with HFD or control diet. Further, we explored the effect of periprostatic adipocytes derived from primary PCa patients on activation and cytokine secretion of prostate stromal fibroblasts. Expression patterns and roles of MIC‐1 signaling on human PCa stroma activation and progression were also investigated. Results HFD stimulated PCa cell growth and invasion as a result of upregulated MIC‐1 signaling and subsequently increased the secretion of interleukin (IL)‐8 and IL‐6 from prostate stromal fibroblasts in PC‐3M‐luc‐C6 PCa mouse model. In addition, periprostatic adipocytes directly stimulated MIC‐1 production from PC‐3 cells and IL‐8 secretion in prostate stromal fibroblasts through the upregulation of adipose lipolysis and free fatty acid release. The increased serum MIC‐1 was significantly correlated with human PCa stroma activation, high serum IL‐8, IL‐6, and lipase activity, advanced PCa progression, and high body mass index of the patients. Glial‐derived neurotrophic factor receptor α‐like (GFRAL), a specific receptor of MIC‐1, was highly expressed in both cytoplasm and membrane of PCa cells and surrounding stromal fibroblasts, and the expression level was decreased by androgen deprivation therapy and chemotherapy. Conclusion HFD‐mediated activation of the PCa stromal microenvironment through metabolically upregulated MIC‐1 signaling by increased available free fatty acids may be a critical mechanism of HFD and/or obesity‐induced PCa progression.
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Affiliation(s)
- Mingguo Huang
- Department of Urology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Shintaro Narita
- Department of Urology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Atsushi Koizumi
- Department of Urology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Taketoshi Nara
- Department of Urology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Kazuyuki Numakura
- Department of Urology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Shigeru Satoh
- Department of Urology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Hiroshi Nanjo
- Department of Clinical Pathology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
| | - Tomonori Habuchi
- Department of Urology, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, 010-8543, Japan
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26
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Shapira S, Kazanov D, Dankner R, Fishman S, Stern N, Arber N. High Expression Level of PPARγ in CD24 Knockout Mice and Gender-Specific Metabolic Changes: A Model of Insulin-Sensitive Obesity. J Pers Med 2021; 11:jpm11010050. [PMID: 33467499 PMCID: PMC7829882 DOI: 10.3390/jpm11010050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/10/2021] [Accepted: 01/11/2021] [Indexed: 11/16/2022] Open
Abstract
Background: The heat-stable HSA/CD24 gene encodes a protein that shows high expression levels in adipocyte precursor cells but low levels in terminally differentiated adipocytes. Its high expression in many types of human cancer suggests an association between cancer, diabetes, and obesity, which is currently unclear. In addition, peroxisome proliferator-activated receptor gamma (PPARγ) is a regulator of adipogenesis that plays a role in insulin sensitivity, lipid metabolism, and adipokine expression in adipocytes. Aim: To assess gender-dependent changes in CD24 KO and its association with PPARγ expression. Experimental approach: WT and CD24 KO mice were monitored from birth up to 12 months, and various physiological and molecular characteristics were analysed. Mean body weight and adipose mass were higher in KO mice than in WT mice. Male, but not female, KO mice showed increased insulin sensitivity, glucose uptake, adipocyte size, and PPARγ expression than WT mice. In addition, enteric bacterial populations, assessed through high-throughput sequencing of stool 16S rRNA genes, were significantly different between male KO and WT mice. Conclusions: CD24 may negatively regulate PPARγ expression in male mice. Furthermore, the association between the CD24 and insulin sensitivity suggests a possible mechanism for diabetes as a cancer risk factor. Finally, CD24 KO male mice may serve as a model of obesity and insulin hyper-sensitivity.
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Affiliation(s)
- Shiran Shapira
- The Integrated Cancer Prevention Center, Tel Aviv Sourasky Medical Center, Tel Aviv 6423906, Israel; (S.S.); (D.K.)
- Department of Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Dina Kazanov
- The Integrated Cancer Prevention Center, Tel Aviv Sourasky Medical Center, Tel Aviv 6423906, Israel; (S.S.); (D.K.)
| | - Rachel Dankner
- Unit for Cardiovascular Epidemiology, The Gertner Institute for Epidemiology and Health Policy Research, Sheba Medical Center, Tel Hashomer 52621, Israel;
- Department of Epidemiology and Preventive Medicine, Sackler Faculty of Medicine, School of Public Health, Tel Aviv University, Ramat Aviv, Tel Aviv 69978, Israel
| | - Sigal Fishman
- Bariatric Endoscopy Service, Department of Gastroenterology and Liver Disease, Tel Aviv Sourasky Medical Center, affiliated with the Sackler School of Medicine, Tel Aviv University, Tel Aviv 69978, Israel;
| | - Naftali Stern
- The Sagol Center for Epigenetics of Aging and Metabolism, Institute of Endocrinology, Metabolism and Hypertension, Tel Aviv-Sourasky Medical Center and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel;
| | - Nadir Arber
- The Integrated Cancer Prevention Center, Tel Aviv Sourasky Medical Center, Tel Aviv 6423906, Israel; (S.S.); (D.K.)
- Department of Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
- Bariatric Endoscopy Service, Department of Gastroenterology and Liver Disease, Tel Aviv Sourasky Medical Center, affiliated with the Sackler School of Medicine, Tel Aviv University, Tel Aviv 69978, Israel;
- Correspondence: ; Tel.: +972-3-6973716/4968; Fax: +972-3-6974867
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27
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COX-2 promotes mammary adipose tissue inflammation, local estrogen biosynthesis, and carcinogenesis in high-sugar/fat diet treated mice. Cancer Lett 2021; 502:44-57. [PMID: 33429006 DOI: 10.1016/j.canlet.2021.01.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 12/22/2020] [Accepted: 01/04/2021] [Indexed: 12/26/2022]
Abstract
Obesity is a major risk factor for breast cancer, especially in post-menopausal women. In the breast tissue of obese women, cyclooxygenase-2 (COX-2)-dependent prostaglandin E2 (PGE2) production has been correlated with inflammation and local estrogen biosynthesis via aromatase. Using a mouse model of 7,12-dimethylbenz[a]anthracene/medroxyprogesterone-acetate (DMBA/MPA)-induced carcinogenesis, we demonstrated that an obesogenic diet promotes mammary tissue inflammation and local estrogen production, and accelerates mammary tumor formation in a COX-2-dependent manner. High-sugar/fat (HSF) diet augmented the levels of the pro-inflammatory mediators MCP-1, IL-6, COX-2, and PGE2 in mammary tissue, and this was accompanied by crown-like structures of breast (CLS-B) formation and aromatase/estrogen upregulation. Treatment with a COX-2 selective inhibitor, etoricoxib, decreased PGE2, IL-6, MCP-1, and CLS-B formation as well as reduced aromatase protein and estrogen levels in the mammary tissue of mice fed a HSF diet. Etoricoxib-treated mice showed increased latency and decreased incidence of mammary tumors, which resulted in prolonged animal survival when compared to HSF diet alone. Inhibition of tumor angiogenesis also seemed to account for the prolonged survival of COX-2 inhibitor-treated animals. In conclusion, obesogenic diet-induced COX-2 is sufficient to trigger inflammation, local estrogen biosynthesis, and mammary tumorigenesis.
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28
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Naghiaee Y, Didehdar R, Pourrajab F, Rahmanian M, Heiranizadeh N, Mohiti A, Mohiti-Ardakani J. Metformin downregulates miR223 expression in insulin-resistant 3T3L1 cells and human diabetic adipose tissue. Endocrine 2020; 70:498-508. [PMID: 32970287 DOI: 10.1007/s12020-020-02459-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 08/08/2020] [Indexed: 02/06/2023]
Abstract
AIMS AND DESIGNS Metformin, an anti-diabetic drug, is the first line medication for the treatment of type 2 diabetes mellitus and some studies show its relationship with micro-RNAs. This study set up to determine the effect of metformin on miR223 expression and content of AKT/GLUT4 proteins in insulin resistant signaling in 3T3L1 cells and adipocyte of human diabetic patients. MATERIALS AND METHODS Subcutaneous adipose tissues were taken from newly diagnosed diabetic patients (HOMA-IR > 1.8), before and after three months treatment with 500 mg of metformin twice a day. Cellular homogenate was prepared and miR223 expression and AKT/GLUT4 protein expression were determined by quantitative real-time PCR and western blotting. The results were compared to insulin resistant 3T3L1 adipocytes that were treated with 10 mM Metformin. RESULTS MiR223 expression was significantly overexpressed both in insulin-resistant 3T3L1 adipocytes compared to non-insulin resistant adipocytes and in human diabetic adipose tissue, compared to non-diabetics (P value < 0.01). Metformin treatment downregulated miR223 expression in both adipocytes and human diabetic adipose tissue. In contrast the IRS/PI3-K/AKT pathway signaling components, Akt and GLUT4 increased in insulin-resistant 3T3L1 adipocytes and human diabetic adipose tissue after three months of metformin treatment. CONCLUSIONS Metformin reduced insulin resistance in adipocytes by reduction of miR223 expression and improving of IRS/Akt/GLUT4 signaling pathways. Plasma miR223 expression of human diabetic patients was reduced by metformin treatment. These results point to a novel mechanism of miR223 in insulin resistance.
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Affiliation(s)
- Yousof Naghiaee
- Department of Biochemistry and Molecular Biology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Reza Didehdar
- Department of Biochemistry, Faculty of Medicine, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Fatemeh Pourrajab
- Department of Biochemistry and Molecular Biology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
- Nutrition and Food Security Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Masoud Rahmanian
- Department of Endocrinology, School of Medicine Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Naeime Heiranizadeh
- Department of General Surgery, School of Medicine Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Azra Mohiti
- Department of Oral Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Javad Mohiti-Ardakani
- Department of Biochemistry and Molecular Biology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
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Ahmed F, Sarsenbayeva A, Katsogiannos P, Aguer C, Pereira MJ. The effects of bisphenol A and bisphenol S on adipokine expression and glucose metabolism in human adipose tissue. Toxicology 2020; 445:152600. [PMID: 32976960 DOI: 10.1016/j.tox.2020.152600] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/17/2020] [Accepted: 09/18/2020] [Indexed: 11/16/2022]
Abstract
PURPOSE The environmental endocrine disruptors, bisphenol A (BPA) and bisphenol S (BPS) are associated with the development of type 2 diabetes. We aim to study the effects of BPA or BPS exposure on adipokine expression in human adipose tissue and on adipocyte glucose uptake. METHODS Human subcutaneous adipose tissue was treated for 24 or 72 h with environmentally-relevant and supraphysiological concentrations of BPA or BPS (1-104 nM). Following exposure, gene expression of proinflammatory cytokines, adipokines, and estrogen receptors was measured in adipose tissue. Glucose uptake and the insulin signalling pathway were analyzed in isolated adipocytes following adipose tissue culture with BPA for 24 h. RESULTS Adipose tissue treated with BPA for 24 h had reduced expression of the proinflammatory genes (IL6, IL1B, TNFA) and adipokines (ADIPOQ, FABP4). BPA and BPS had no effect on the expression of other proinflammatory genes (IL33), adipokines (LEP), or receptors (ESR1, ESR2) after 72-h exposure. Adipose tissue treated with environmentally-relevant concentrations of BPA for 24 h had reduced insulin-stimulated glucose uptake, without altered gene and protein levels of key insulin signalling pathway markers. CONCLUSIONS We found that human adipose tissue treated with environmentally-relevant concentrations of BPA for 24 h, but not BPS, reduced expression of proinflammatory genes and adipokines. Furthermore, BPA reduced glucose uptake in adipocytes independently of insulin signalling. Such mechanisms can contribute to the development of insulin resistance associated with BPA exposure.
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Affiliation(s)
- Fozia Ahmed
- Institut du Savoir Montfort-recherche, Ottawa, Canada; Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - Assel Sarsenbayeva
- Clinical Diabetes and Metabolism, Department of Medical Sciences, Uppsala University, Rudbecklaboratoriet hus R3, våning 2, Dag Hammarskjölds väg 20, 751 85 Uppsala, Sweden
| | - Petros Katsogiannos
- Clinical Diabetes and Metabolism, Department of Medical Sciences, Uppsala University, Rudbecklaboratoriet hus R3, våning 2, Dag Hammarskjölds väg 20, 751 85 Uppsala, Sweden
| | - Céline Aguer
- Institut du Savoir Montfort-recherche, Ottawa, Canada; Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Canada; School of Human Kinetics, Faculty of Health Sciences, University of Ottawa, Canada; Interdisciplinary School of Health Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, Canada.
| | - Maria J Pereira
- Clinical Diabetes and Metabolism, Department of Medical Sciences, Uppsala University, Rudbecklaboratoriet hus R3, våning 2, Dag Hammarskjölds väg 20, 751 85 Uppsala, Sweden.
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Fazal N, Khawaja H, Naseer N, Khan AJ, Latief N. Daphne mucronata enhances cell proliferation and protects human adipose stem cells against monosodium iodoacetate induced oxidative stress in vitro. Adipocyte 2020; 9:495-508. [PMID: 32867575 PMCID: PMC7714443 DOI: 10.1080/21623945.2020.1812242] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 08/11/2020] [Accepted: 08/15/2020] [Indexed: 01/01/2023] Open
Abstract
Mesenchymal stem cells (MSCs) are being used to treat many diseases as they exhibit great regenerative potential. However, MSC's transplantation sometimes does not yield the maximum regenerative outcome as they are unable to survive in inflammatory conditions. Several approaches including preconditioning are used to improve the survival rate of mesenchymal stem cells. One such recently reported approach is preconditioning MSCs with plant extracts. The present study was designed to evaluate the effect of Daphne mucronata extract on stressed human adipose-derived mesenchymal stem cells (hADMSCs). Isolated hADMSCs were preconditioned with different concentrations of Daphne muconata extract and the protective, proliferative, antioxidant and anti-inflammatory effect was assessed through various assays and expression analysis of inflammatory markers regulated through NF-κB pathway. Results suggest that preconditioning hADMSCs with Daphne mucronata increased the cell viability, proliferative and protective potential of hADMSCs with a concomitant reduction in LDH, ROS and elevation in SOD activity. Moreover, both the ELISA and gene expression analysis demonstrated down regulations of inflammatory markers (IL1-β, TNF-α, p65, p50, MMP13) in Daphne mucronata preconditioned hADMSCs as compared to stress. This is the first study to report the use of MIA induced oxidative stress against hADMSC's and effect of Daphne mucronata on stressed hADMSCs. Results of these studies provided evidence that Daphne mucronata protects the hADMSCs during stress conditions by down regulating the inflammatory markers and hence increase the viability and proliferative potential of hADMSCs that is crucial for transplantation purposes.
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Affiliation(s)
- Numan Fazal
- National Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Hamzah Khawaja
- National Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Nadia Naseer
- National Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Azim Jahangir Khan
- Allama Iqbal Medical College, University of Health Sciences, Lahore, Pakistan
| | - Noreen Latief
- National Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
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McCarthy M, Brown T, Alarcon A, Williams C, Wu X, Abbott RD, Gimble J, Frazier T. Fat-On-A-Chip Models for Research and Discovery in Obesity and Its Metabolic Comorbidities. TISSUE ENGINEERING. PART B, REVIEWS 2020; 26:586-595. [PMID: 32216545 PMCID: PMC8196547 DOI: 10.1089/ten.teb.2019.0261] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 03/12/2020] [Indexed: 12/11/2022]
Abstract
The obesity epidemic and its associated comorbidities present a looming challenge to health care delivery throughout the world. Obesity is characterized as a sterile inflammatory process within adipose tissues leading to dysregulated secretion of bioactive adipokines such as adiponectin and leptin, as well as systemic metabolic dysfunction. The majority of current obesity research has focused primarily on preclinical animal models in vivo and two-dimensional cell culture models in vitro. Neither of these generalized approaches is optimal due to interspecies variability, insufficient accuracy with respect to predicting human outcomes, and failure to recapitulate the three-dimensional (3D) microenvironment. Consequently, there is a growing demand and need for more sophisticated microphysiological systems to reproduce more physiologically accurate human white and brown/beige adipose depots. To address this research need, human and murine cell lines and primary cultures are being combined with bioscaffolds to create functional 3D environments that are suitable for metabolically active adipose organoids in both static and perfusion bioreactor cultures. The development of these technologies will have considerable impact on the future pace of discovery for novel small molecules and biologics designed to prevent and treat metabolic syndrome and obesity in humans. Furthermore, when these adipose tissue models are integrated with other organ systems they will have applicability to obesity-related disorders such as diabetes, nonalcoholic fatty liver disease, and osteoarthritis. Impact statement The current review article summarizes the advances made within the organ-onchip field, as it pertains to adipose tissue models of obesity and obesity-related syndromes, such as diabetes, non-alcoholic fatty liver disease, and osteoarthritis. As humanized 3D adipose-derived constructs become more accessible to the research community, it is anticipated that they will accelerate and enhance the drug discovery pipeline for obesity, diabetes, and metabolic diseases by reducing the preclinical evaluation process and improving predictive accuracy. Such developments, applications, and usages of existing technologies can change the paradigm of personalized medicine and create substantial progress in our approach to modern medicine.
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Affiliation(s)
| | - Theodore Brown
- Tulane University School of Medicine, New Orleans, Louisiana, USA
| | - Andrea Alarcon
- LaCell LLC, New Orleans, Louisiana, USA
- Obatala Sciences, Inc., New Orleans, Louisiana, USA
| | | | - Xiying Wu
- LaCell LLC, New Orleans, Louisiana, USA
- Obatala Sciences, Inc., New Orleans, Louisiana, USA
| | - Rosalyn D. Abbott
- Materials Science and Engineering Department, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
| | - Jeffrey Gimble
- LaCell LLC, New Orleans, Louisiana, USA
- Obatala Sciences, Inc., New Orleans, Louisiana, USA
| | - Trivia Frazier
- LaCell LLC, New Orleans, Louisiana, USA
- Obatala Sciences, Inc., New Orleans, Louisiana, USA
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Ozone Activates the Nrf2 Pathway and Improves Preservation of Explanted Adipose Tissue In Vitro. Antioxidants (Basel) 2020; 9:antiox9100989. [PMID: 33066365 PMCID: PMC7602229 DOI: 10.3390/antiox9100989] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 10/12/2020] [Indexed: 12/20/2022] Open
Abstract
In clinical practice, administration of low ozone (O3) dosages is a complementary therapy for many diseases, due to the capability of O3 to elicit an antioxidant response through the Nuclear Factor Erythroid 2-Related Factor 2 (Nrf2)-dependent pathway. Nrf2 is also involved in the adipogenic differentiation of mesenchymal stem cells, and low O3 concentrations have been shown to stimulate lipid accumulation in human adipose-derived adult stem cells in vitro. Thus, O3 treatment is a promising procedure to improve the survival of explanted adipose tissue, whose reabsorption after fat grafting is a major problem in regenerative medicine. In this context, we carried out a pilot study to explore the potential of mild O3 treatment in preserving explanted murine adipose tissue in vitro. Scanning and transmission electron microscopy, Western blot, real-time polymerase chain reaction and nuclear magnetic resonance spectroscopy were used. Exposure to low O3 concentrations down in the degradation of the explanted adipose tissue and induced a concomitant increase in the protein abundance of Nrf2 and in the expression of its target gene Hmox1. These findings provide a promising background for further studies aimed at the clinical application of O3 as an adjuvant treatment to improve fat engraftment.
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Liu H, Zhan YL, Luo GJ, Zou LL, Li Y, Lu HY. Liraglutide and Insulin Have Contrary Effects on Adipogenesis of Human Adipose-Derived Stem Cells via Wnt Pathway. Diabetes Metab Syndr Obes 2020; 13:3075-3087. [PMID: 32943896 PMCID: PMC7478378 DOI: 10.2147/dmso.s253097] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 06/30/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Glucagon-like peptide-1 (GLP-1) has been reported to have beneficial impacts on improving human's metabolism and ameliorating insulin resistance. While insulin is another important and conventional drug in diabetes treatment, but it has an adverse effect on weight gain. PURPOSE To make sure whether GLP-1 and insulin play different roles in human adipose-derived stem cells (hADSCs). METHODS We examined the in vitro roles and molecular mechanisms of liraglutide, a GLP-1 analogue, and human insulin on hADSCs isolated from subcutaneous adipose tissue. Different concentrations (0, 0.1, 1, 10, 100nM) of liraglutide and insulin were added to proliferation and differentiation medium of hADSCs, respectively. RESULTS Liraglutide inhibits while insulin promotes the proliferation and differentiation at the concentration of 100nM. Moreover, the levels of GSK-3 increase during differentiation and liraglutide could down-regulate it when compared with insulin. We also find that the activation of phosphorylated GSK-3α and GSK-3β is involved in the differentiation roles. And classical and non-classical Wnt pathways all play roles in the differentiation, which are characterized with the up/down-regulation of the expression of adipogenesis genes such as PPAR-γ and CEBP-α. CONCLUSION Liraglutide and insulin have contrary effects on the proliferation and adipogenesis via Wnt pathway in primary cultured ADSCs. Those effects could partly explain the different roles of GLP-1 and insulin on weight gain and insulin resistance.
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Affiliation(s)
- Hong Liu
- Department of Nutrition, The Third Xiangya Hospital, Central South University, Changsha, Hunan, People’s Republic of China
- Department of Endocrinology & Metabolism, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, People’s Republic of China
| | - Yan-li Zhan
- Department of Endocrinology & Metabolism, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, People’s Republic of China
- Department of Rheumatology, Jiaozuo People’s Hospital, Jiaozuo, Henan, People’s Republic of China
| | - Guo-jing Luo
- Department of Endocrinology & Metabolism, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, People’s Republic of China
- Department of Endocrinology & Metabolism, Zhuhai Hospital Affiliated with Jinan University, Zhuhai People’s Hospital, Zhuhai, Guangdong, People’s Republic of China
| | - Ling-ling Zou
- Department of Endocrinology & Metabolism, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, People’s Republic of China
- Department of Endocrinology, The Second People’s Hospital of Hefei, Anhui, People’s Republic of China
| | - Yun Li
- Department of Endocrinology & Metabolism, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, People’s Republic of China
| | - Hong-yun Lu
- Department of Endocrinology & Metabolism, The Fifth Affiliated Hospital of Sun Yat-Sen University, Zhuhai, Guangdong, People’s Republic of China
- Department of Endocrinology & Metabolism, Zhuhai Hospital Affiliated with Jinan University, Zhuhai People’s Hospital, Zhuhai, Guangdong, People’s Republic of China
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Arcidiacono B, Chiefari E, Foryst-Ludwig A, Currò G, Navarra G, Brunetti FS, Mirabelli M, Corigliano DM, Kintscher U, Britti D, Mollace V, Foti DP, Goldfine ID, Brunetti A. Obesity-related hypoxia via miR-128 decreases insulin-receptor expression in human and mouse adipose tissue promoting systemic insulin resistance. EBioMedicine 2020; 59:102912. [PMID: 32739259 PMCID: PMC7502675 DOI: 10.1016/j.ebiom.2020.102912] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 07/05/2020] [Accepted: 07/08/2020] [Indexed: 02/06/2023] Open
Abstract
Background Insulin resistance in visceral adipose tissue (VAT), skeletal muscle and liver is a prominent feature of most patients with obesity. How this association arises remains poorly understood. The objective of this study was to demonstrate that the decrease in insulin receptor (INSR) expression and insulin signaling in VAT from obese individuals is an early molecular manifestation that might play a crucial role in the cascade of events leading to systemic insulin resistance. Methods To clarify the role of INSR and insulin signaling in adipose tissue dysfunction in obesity, we first measured INSR expression in VAT samples from normal-weight subjects and patients with different degrees of obesity. We complemented these studies with experiments on high-fat diet (HFD)-induced obese mice, and in human and murine adipocyte cultures, in both normoxic and hypoxic conditions. Findings An inverse correlation was observed between increasing body mass index and decreasing INSR expression in VAT of obese humans. Our results indicate that VAT-specific downregulation of INSR is an early event in obesity-related adipose cell dysfunction, which increases systemic insulin resistance in both obese humans and mice. We also provide evidence that obesity-related hypoxia in VAT plays a determinant role in this scenario by decreasing INSR mRNA stability. This decreased stability is through the activation of a miRNA (miR-128) that downregulates INSR expression in adipocytes. Interpretation We present a novel pathogenic mechanism of reduced INSR expression and insulin signaling in adipocytes. Our data provide a new explanation linking obesity with systemic insulin resistance. Funding This work was partly supported by a grant from Nutramed (PON 03PE000_78_1) and by the European Commission (FESR FSE 2014-2020 and Regione Calabria).
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Affiliation(s)
- Biagio Arcidiacono
- Department of Health Sciences, University of Catanzaro "Magna Græcia", Viale Europa, 88100 Catanzaro, Italy
| | - Eusebio Chiefari
- Department of Health Sciences, University of Catanzaro "Magna Græcia", Viale Europa, 88100 Catanzaro, Italy
| | - Anna Foryst-Ludwig
- Institute of Pharmacology, Center for Cardiovascular Research, Charité Universitätsmedizin, 10115 Berlin, Germany
| | - Giuseppe Currò
- Department of Health Sciences, University of Catanzaro "Magna Græcia", Viale Europa, 88100 Catanzaro, Italy
| | - Giuseppe Navarra
- Department of Human Pathology of Adult and Evolutive Age, University Hospital of Messina, 98122 Messina, Italy
| | - Francesco S Brunetti
- Department of Health Sciences, University of Catanzaro "Magna Græcia", Viale Europa, 88100 Catanzaro, Italy
| | - Maria Mirabelli
- Department of Health Sciences, University of Catanzaro "Magna Græcia", Viale Europa, 88100 Catanzaro, Italy
| | - Domenica M Corigliano
- Department of Health Sciences, University of Catanzaro "Magna Græcia", Viale Europa, 88100 Catanzaro, Italy
| | - Ulrich Kintscher
- Institute of Pharmacology, Center for Cardiovascular Research, Charité Universitätsmedizin, 10115 Berlin, Germany
| | - Domenico Britti
- Department of Health Sciences, University of Catanzaro "Magna Græcia", Viale Europa, 88100 Catanzaro, Italy
| | - Vincenzo Mollace
- Department of Health Sciences, University of Catanzaro "Magna Græcia", Viale Europa, 88100 Catanzaro, Italy
| | - Daniela P Foti
- Department of Health Sciences, University of Catanzaro "Magna Græcia", Viale Europa, 88100 Catanzaro, Italy
| | - Ira D Goldfine
- Department of Medicine, University of California San Francisco, 94143 San Francisco, USA
| | - Antonio Brunetti
- Department of Health Sciences, University of Catanzaro "Magna Græcia", Viale Europa, 88100 Catanzaro, Italy.
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Ezeh U, Chen IYD, Chen YH, Azziz R. Adipocyte Insulin Resistance in PCOS: Relationship With GLUT-4 Expression and Whole-Body Glucose Disposal and β-Cell Function. J Clin Endocrinol Metab 2020; 105:5834379. [PMID: 32382742 PMCID: PMC7274487 DOI: 10.1210/clinem/dgaa235] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 04/29/2020] [Indexed: 01/16/2023]
Abstract
CONTEXT Impaired sensitivity to the antilipolytic action of insulin in adipose tissue (AT) may play a role in determining metabolic dysfunction in polycystic ovary syndrome (PCOS). OBJECTIVES To test the hypothesis that insulin resistance (IR) in AT is associated with whole-body insulin sensitivity and β-cell function in PCOS. RESEARCH DESIGN AND SETTING Prospective cross-sectional study. METHODS Eighteen participants with PCOS and 18-matched control participants underwent a modified frequently sampled intravenous glucose tolerance test (mFSIVGTT); subgroups underwent single-slice computed tomography scans determining AT distribution and adipocyte glucose transporter type 4 (GLUT-4) expression. MAIN OUTCOME MEASURES IR in AT in basal (by the adipose insulin resistance index [Adipo-IR]) and dynamic (mFSIVGTT-derived indices of insulin-mediated nonesterified fatty acids [NEFA] suppression [NEFAnadir, TIMEnadir, and %NEFAsupp]) states; whole-body insulin-mediated glucose uptake and insulin secretion in basal (by homeostatic model assessment [HOMA]-IR and HOMA-β%) and dynamic (mFSIVGTT-derived insulin sensitivity index [Si], acute insulin response to glucose [AIRg], and disposition index [Di]) states. RESULTS Participants with PCOS had higher HOMA-IR and HOMA-β%, lower Si and Di, higher longer TIMEnadir, higher Adipo-IR and NEFAnadir, and a trend toward lower GLUT-4, than the control group participants. Adipo-IR was associated with dynamic state IR in AT (NEFAnadir TIMEnadir, and %NEFAsupp), but only in PCOS, and with HOMA-IR and HOMA-β% in both groups. NEFAnadir and TIMEnadir were negatively and %NEFAsupp positively associated with Si only in PCOS, but not with AIRg and Di, or GLUT-4 expression. CONCLUSION Women with PCOS demonstrated increased IR in AT, which is closely associated with whole-body IR but not with dynamic state β-cell function or adipocyte GLUT-4 gene expression.
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Affiliation(s)
- Uche Ezeh
- Department of Obstetrics and Gynecology, Stanford Healthcare-ValleyCare Hospital, Pleasanton, California
- Department of Obstetrics & Gynecology and Center for Androgen-Related Disorders, Cedars-Sinai Medical Center, Los Angeles, California
- Department of Obstetrics & Gynecology, Medical College of Georgia, Augusta University, Augusta, Georgia
| | - Ida Y-D Chen
- Department of Obstetrics & Gynecology and Center for Androgen-Related Disorders, Cedars-Sinai Medical Center, Los Angeles, California
- Department of Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
- Institute for Translational Genomics and Population Sciences, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, California
| | - Yen-Hao Chen
- Department of Obstetrics & Gynecology and Center for Androgen-Related Disorders, Cedars-Sinai Medical Center, Los Angeles, California
- Department of Obstetrics & Gynecology, Medical College of Georgia, Augusta University, Augusta, Georgia
| | - Ricardo Azziz
- Department of Obstetrics & Gynecology and Center for Androgen-Related Disorders, Cedars-Sinai Medical Center, Los Angeles, California
- Department of Obstetrics & Gynecology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California
- Department of Health Policy, Management and Behavior, School of Public Health, University at Albany, SUNY, Albany, New York
- Department of Obstetrics & Gynecology, School of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
- Correspondence and Reprint Requests: Ricardo Azziz, American Society for Reproductive Medicine, 1209 Montgomery Hwy, Birmingham, AL. E-mail:
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Human Adipose Derived Cells in Two- and Three-Dimensional Cultures: Functional Validation of an In Vitro Fat Construct. Stem Cells Int 2020; 2020:4242130. [PMID: 32587620 PMCID: PMC7303735 DOI: 10.1155/2020/4242130] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 01/20/2020] [Accepted: 03/13/2020] [Indexed: 02/06/2023] Open
Abstract
Obesity, defined as a body mass index of 30 kg/m2 or above, has increased considerably in incidence and frequency within the United States and globally. Associated comorbidities including cardiovascular disease, type 2 diabetes mellitus, metabolic syndrome, and nonalcoholic fatty liver disease have led to a focus on the mechanisms promoting the prevention and treatment of obesity. Commonly utilized in vitro models employ human or mouse preadipocyte cell lines in a 2-dimensional (2D) format. Due to the structural, biochemical, and biological limitations of these models, increased attention has been placed on "organ on a chip" technologies for a 3-dimensional (3D) culture. Herein, we describe a method employing cryopreserved primary human stromal vascular fraction (SVF) cells and a human blood product-derived biological scaffold to create a 3D adipose depot in vitro. The "fat-on-chip" 3D cultures have been validated relative to 2D cultures based on proliferation, flow cytometry, adipogenic differentiation, confocal microscopy/immunofluorescence, and functional assays (adipokine secretion, glucose uptake, and lipolysis). Thus, the in vitro culture system demonstrates the critical characteristics required for a humanized 3D white adipose tissue (WAT) model.
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Zhang H, Li K, Zhao Y, Zhang Y, Sun J, Li S, Lin G. Long-term use of fluoxetine accelerates bone loss through the disruption of sphingolipids metabolism in bone marrow adipose tissue. Transl Psychiatry 2020; 10:138. [PMID: 32398744 PMCID: PMC7217841 DOI: 10.1038/s41398-020-0819-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 04/16/2020] [Accepted: 04/22/2020] [Indexed: 11/30/2022] Open
Abstract
Fluoxetine is a commonly prescribed antidepressant, and the mechanisms of increased bone fragility with its long-term use remain largely unknown. Here, we show that long-term administration of fluoxetine induces the disruption of sphingolipids metabolism in bone marrow adipose tissue (BMAT)through the inhibition of acid sphingomyelinase (ASM). Similarly, a significant reduction of the bone volume was observed in mice with ASM knockout (Smpd1-/-). In detail, inhibition of ASM by fluoxetine reduces the sphingosine-1-phosphate (S1P) level in bone marrow adipocytes, leading to the increase of receptor activator of nuclear factor-kappa-Β ligand (RANKL) secretion, a key regulator for the activation of osteoclastogenesis and bone loss, through the upregulation of cyclooxygenase-2 and its enzymatic product prostaglandin E2 (COX-2/PGE2). In contrast, overexpression of ASM by cisplatin normalizes fluoxetine-induced RANKL overproduction. Furthermore, we conducted a clinical trial with L-serine, a precursor of sphingolipids biosynthesis. The results show that oral supplementation of L-serine (250 mg//kg/d) prevents the acceleration of bone loss caused by long-term fluoxetine (12 months) in postmenopausal women with major depressive disorder (mean total hip bone mineral density reduction: -2.0% vs -1.1%, P = 0.006). Our study provides new insights and potential treatment strategy on the bone loss caused by long-term use of fluoxetine.
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Affiliation(s)
- Huili Zhang
- grid.464489.30000 0004 1758 1008School of Medical Imaging, Jiangsu Vocational College of Medicine, Yancheng, 224005 Jiangsu China
| | - Kefeng Li
- grid.266100.30000 0001 2107 4242School of Medicine, University of California, San Diego, CA 92103 USA
| | - Yanna Zhao
- grid.266100.30000 0001 2107 4242School of Medicine, University of California, San Diego, CA 92103 USA
| | - Yilan Zhang
- grid.464489.30000 0004 1758 1008School of Medical Imaging, Jiangsu Vocational College of Medicine, Yancheng, 224005 Jiangsu China
| | - Jiawen Sun
- grid.429222.d0000 0004 1798 0228Department of Orthopedics, The First Affiliated Hospital of Soochow University, Suzhou, 224005 Jiangsu China
| | - Shihong Li
- Department of Radiology, Huadong Hospital Affiliated to Fudan University, Shanghai, 200040, China.
| | - Guangwu Lin
- Department of Radiology, Huadong Hospital Affiliated to Fudan University, Shanghai, 200040, China.
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Casimiro I, Hanlon EC, White J, De Leon A, Ross R, Moise K, Piron M, Brady MJ. Reduction of IL-6 gene expression in human adipose tissue after sleeve gastrectomy surgery. Obes Sci Pract 2020; 6:215-224. [PMID: 32313680 PMCID: PMC7156876 DOI: 10.1002/osp4.396] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 12/03/2019] [Accepted: 12/05/2019] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVE There is increasing evidence that immune cell interactions in adipose tissue contribute to the development of metabolic dysfunction. Pro-inflammatory cytokines have been shown to mediate insulin resistance, and the presence of macrophages is a salient feature in the development of obesity. The present study aimed to evaluate adipocyte size and macrophage activation in women before and 3 months after laparoscopic vertical sleeve gastrectomy (VSG). METHODS Subcutaneous abdominal adipose tissue biopsies were obtained from women scheduled to undergo VSG. Histological evaluation of adipocytes and macrophages was performed as well as cytokine expression quantification before and after VSG-induced weight loss. RESULTS Weight loss following VSG resulted in a reduction in adipocyte size as well as a decrease in interleukin (IL)-6 cytokine mRNA expression in subcutaneous adipose tissue. There was no change in the presence of crownlike structures after weight loss. CONCLUSIONS Early weight loss after VSG is associated with a reduction in adipocyte size and a decline in IL-6 gene expression in local adipose tissue. Macrophage infiltration and crownlike density structures persist in adipose tissue from tissues impacted by excess body weight 3 months after VSG-induced weight loss.
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Affiliation(s)
- Isabel Casimiro
- Department of Medicine, Section of Endocrinology, Diabetes & MetabolismUniversity of ChicagoChicagoIllinois
| | - Erin C. Hanlon
- Department of Medicine, Section of Endocrinology, Diabetes & MetabolismUniversity of ChicagoChicagoIllinois
| | - Jeremy White
- Committee on Molecular Metabolism & NutritionUniversity of ChicagoChicagoIllinois
| | - Avelino De Leon
- Committee on Molecular Metabolism & NutritionUniversity of ChicagoChicagoIllinois
| | - Ruby Ross
- Department of Medicine, Section of Endocrinology, Diabetes & MetabolismUniversity of ChicagoChicagoIllinois
| | - Katiannah Moise
- Committee on Molecular Metabolism & NutritionUniversity of ChicagoChicagoIllinois
| | - Matthew Piron
- Department of Medicine, Section of Endocrinology, Diabetes & MetabolismUniversity of ChicagoChicagoIllinois
| | - Matthew J. Brady
- Department of Medicine, Section of Endocrinology, Diabetes & MetabolismUniversity of ChicagoChicagoIllinois
- Committee on Molecular Metabolism & NutritionUniversity of ChicagoChicagoIllinois
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White JM, Piron MJ, Rangaraj VR, Hanlon EC, Cohen RN, Brady MJ. Reference Gene Optimization for Circadian Gene Expression Analysis in Human Adipose Tissue. J Biol Rhythms 2020; 35:84-97. [PMID: 31668115 PMCID: PMC7409766 DOI: 10.1177/0748730419883043] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A hallmark of biology is the cyclical nature of organismal physiology driven by networks of biological, including circadian, rhythms. Unsurprisingly, disruptions of the circadian rhythms through sleep curtailment or shift work have been connected through numerous studies to positive associations with obesity, insulin resistance, and diabetes. Quantitative reverse transcriptase polymerase chain reaction (qRT-PCR) measures oscillation in messenger RNA expression, an essential foundation for the study of the physiological circadian regulatory network. Primarily, measured oscillations have involved the use of reference gene normalization. However, the validation and identification of suitable reference genes is a significant challenge across different biological systems. This study focuses on adipose tissue of premenopausal, otherwise healthy, morbidly obese women voluntarily enrolled after being scheduled for laparoscopic sleeve gastrectomy surgery. Acquisition of tissue was accomplished by aspiratory needle biopsies of subcutaneous adipose tissue 1 to 2 weeks prior to surgery and 12 to 13 weeks following surgery and an in-surgery scalpel-assisted excision of mesenteric adipose tissue. Each biopsy was sterile cultured ex vivo and serially collected every 4 h over approximately 36 h. The candidate reference genes that were tested were 18S rRNA, GAPDH, HPRT1, RPII, RPL13α, and YWHAZ. Three analytic tools were used to test suitability, and the candidate reference genes were used to measure oscillation in expression of a known circadian clock element (Dbp). No gene was deemed suitable as an individual reference gene control, which indicated that the optimal reference gene set was the geometrically averaged 3-gene panel composed of YWHAZ, RPL13α, and GAPDH. These methods can be employed to identify optimal reference genes in other systems.
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Affiliation(s)
- Jeremy M. White
- Committee on Molecular Metabolism and Nutrition, University of Chicago, Chicago IL, 60637
| | - Matthew J. Piron
- Department of Medicine, Section of Endocrinology, Diabetes and Metabolism, University of Chicago, Chicago IL, 60637
| | - Vittobai R. Rangaraj
- Committee on Molecular Metabolism and Nutrition, University of Chicago, Chicago IL, 60637
| | - Erin C. Hanlon
- Department of Medicine, Section of Endocrinology, Diabetes and Metabolism, University of Chicago, Chicago IL, 60637
| | - Ronald N. Cohen
- Committee on Molecular Metabolism and Nutrition, University of Chicago, Chicago IL, 60637
- Department of Medicine, Section of Endocrinology, Diabetes and Metabolism, University of Chicago, Chicago IL, 60637
| | - Matthew J. Brady
- Committee on Molecular Metabolism and Nutrition, University of Chicago, Chicago IL, 60637
- Department of Medicine, Section of Endocrinology, Diabetes and Metabolism, University of Chicago, Chicago IL, 60637
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40
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Jorgensen AM, Varkey M, Gorkun A, Clouse C, Xu L, Chou Z, Murphy SV, Molnar J, Lee SJ, Yoo JJ, Soker S, Atala A. Bioprinted Skin Recapitulates Normal Collagen Remodeling in Full-Thickness Wounds. Tissue Eng Part A 2020; 26:512-526. [PMID: 31861970 DOI: 10.1089/ten.tea.2019.0319] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Over 1 million burn injuries are treated annually in the United States, and current tissue engineered skin fails to meet the need for full-thickness replacement. Bioprinting technology has allowed fabrication of full-thickness skin and has demonstrated the ability to close full-thickness wounds. However, analysis of collagen remodeling in wounds treated with bioprinted skin has not been reported. The purpose of this study is to demonstrate the utility of bioprinted skin for epidermal barrier formation and normal collagen remodeling in full-thickness wounds. Human keratinocytes, melanocytes, fibroblasts, dermal microvascular endothelial cells, follicle dermal papilla cells, and adipocytes were suspended in fibrinogen bioink and bioprinted to form a tri-layer skin structure. Bioprinted skin was implanted onto 2.5 × 2.5 cm full-thickness excisional wounds on athymic mice, compared with wounds treated with hydrogel only or untreated wounds. Total wound closure, epithelialization, and contraction were quantified, and skin samples were harvested at 21 days for histology. Picrosirius red staining was used to quantify collagen fiber orientation, length, and width. Immunohistochemical (IHC) staining was performed to confirm epidermal barrier formation, dermal maturation, vascularity, and human cell integration. All bioprinted skin treated wounds closed by day 21, compared with open control wounds. Wound closure in bioprinted skin treated wounds was primarily due to epithelialization. In contrast, control hydrogel and untreated groups had sparse wound coverage and incomplete closure driven primarily by contraction. Picrosirius red staining confirmed a normal basket weave collagen organization in bioprinted skin-treated wounds compared with parallel collagen fibers in hydrogel only and untreated wounds. IHC staining at day 21 demonstrated the presence of human cells in the regenerated dermis, the formation of a stratified epidermis, dermal maturation, and blood vessel formation in bioprinted skin, none of which was present in control hydrogel treated wounds. Bioprinted skin accelerated full-thickness wound closure by promoting epidermal barrier formation, without increasing contraction. This healing process is associated with human cells from the bioprinted skin laying down a healthy, basket-weave collagen network. The remodeled skin is phenotypically similar to human skin and composed of a composite of graft and infiltrating host cells. Impact statement We have demonstrated the ability of bioprinted skin to enhance closure of full-thickness wounds through epithelialization and normal collagen remodeling. To our knowledge, this article is the first to quantify collagen remodeling by bioprinted skin in full-thickness wounds. Our methods and results can be used to guide further investigation of collagen remodeling by tissue engineered skin products to improve ongoing and future bioprinting skin studies. Ultimately, our skin bioprinting technology could translate into a new treatment for full-thickness wounds in human patients with the ability to recapitulate normal collagen remodeling in full-thickness wounds.
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Affiliation(s)
- Adam M Jorgensen
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Mathew Varkey
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Anastasiya Gorkun
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA.,FSBSI Institute of General Pathology and Pathophysiology, Moscow, Russia.,Institute for Regenerative Medicine, Sechenov First Moscow State Medical University, Moscow, Russia
| | - Cara Clouse
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Lei Xu
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Zishuai Chou
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Sean V Murphy
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Joseph Molnar
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA.,Department of Plastic and Reconstructive Surgery, Wake Forest University Baptist Medical Center, Winston-Salem, North Carolina, USA
| | - Sang Jin Lee
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - James J Yoo
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Shay Soker
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Anthony Atala
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
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Gruzdeva O, Uchasova E, Dyleva Y, Borodkina D, Akbasheva O, Antonova L, Matveeva V, Belik E, Ivanov S, Sotnikov A, Kozyrin K, Brel N, Sinitsky M, Karetnikova V, Kokov A, Bychkova E, Pecherina T, Barbarash O. Adipocytes Directly Affect Coronary Artery Disease Pathogenesis via Induction of Adipokine and Cytokine Imbalances. Front Immunol 2019; 10:2163. [PMID: 31608050 PMCID: PMC6761844 DOI: 10.3389/fimmu.2019.02163] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 08/28/2019] [Indexed: 12/11/2022] Open
Abstract
This study aimed to investigate the adipokine and cytokine profiles of adipocytes from epicardial and subcutaneous adipose tissues in interconnection with the visceral adipose tissue area and the biochemical and clinical characteristics of patients with coronary artery disease. We assessed 84 patients with coronary artery disease (65 men, 19 women) and divided them into two groups based on the presence of visceral obesity. We sampled epicardial and subcutaneous adipose tissues from the patients with visceral obesity. We then cultured the adipocytes and evaluated their adipokine profiles and pro-inflammatory activity. Results show that the mRNA expression of adiponectin in cultures of epicardial adipocytes from patients with and without visceral obesity was lower than that in subcutaneous adipocytes. Moreover, adiponectin mRNA expression in cultures of subcutaneous and epicardial adipocytes from patients with visceral obesity was lower than that in patients without obesity. For leptin, the reverse pattern was observed, with expression higher in cultures of epicardial adipocytes than in subcutaneous adipocytes and higher in epicardial adipocytes from patients with visceral obesity than in those from subjects without visceral obesity. In addition, in epicardial adipocytes, increased expression of proinflammatory cytokine genes (IL6, TNF) was observed compared with that in subcutaneous adipocytes. In contrast, expression of IL10 was higher in cultures of subcutaneous adipocytes than in epicardial adipocytes. The epicardial adipose tissue area was associated with the presence of higher levels of leptin and TNF-α within adipocytes and serum, increased lipid and carbohydrate metabolism. Coronary artery disease, in the context of the status of epicardial adipocytes, can be characterized as “metabolic inflammation,” suggesting the direct involvement of adipocytes in pathogenesis through the development of adipokine imbalances and activation of proinflammatory processes.
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Affiliation(s)
- Olga Gruzdeva
- Federal State Budgetary Institution, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia.,Federal State Budget Educational Institution of Higher Education, Kemerovo State Medical University of the Ministry of Healthcare of the Russian Federation, Kemerovo, Russia
| | - Evgenya Uchasova
- Federal State Budgetary Institution, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Yulia Dyleva
- Federal State Budgetary Institution, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Daria Borodkina
- Regional Center for Diabetes, Autonomous Public Healthcare Institution of the Kemrovo Region, Kemerovo Regional Clinical Hospital Named After S.V. Beliyaev, Kemerovo, Russia
| | - Olga Akbasheva
- Federal State Budget Educational Institution of Higher Education, Siberian State Medical University of the Ministry of Healthcare of the Russian Federation, Tomsk, Russia
| | - Larisa Antonova
- Federal State Budgetary Institution, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Vera Matveeva
- Federal State Budgetary Institution, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Ekaterina Belik
- Federal State Budgetary Institution, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Sergei Ivanov
- Federal State Budgetary Institution, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Anton Sotnikov
- Federal State Budgetary Institution, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Kirill Kozyrin
- Federal State Budgetary Institution, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Natalia Brel
- Federal State Budgetary Institution, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Maxim Sinitsky
- Federal State Budgetary Institution, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Victoria Karetnikova
- Federal State Budgetary Institution, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia.,Federal State Budget Educational Institution of Higher Education, Kemerovo State Medical University of the Ministry of Healthcare of the Russian Federation, Kemerovo, Russia
| | - Alexander Kokov
- Federal State Budgetary Institution, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Evgenya Bychkova
- Federal State Budget Educational Institution of Higher Education, Kemerovo State Medical University of the Ministry of Healthcare of the Russian Federation, Kemerovo, Russia
| | - Tamara Pecherina
- Federal State Budgetary Institution, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia
| | - Olga Barbarash
- Federal State Budgetary Institution, Research Institute for Complex Issues of Cardiovascular Diseases, Kemerovo, Russia.,Federal State Budget Educational Institution of Higher Education, Kemerovo State Medical University of the Ministry of Healthcare of the Russian Federation, Kemerovo, Russia
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42
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Wessels B, Honecker J, Schöttl T, Stecher L, Klingenspor M, Hauner H, Skurk T. Adipose Mitochondrial Respiratory Capacity in Obesity is Impaired Independently of Glycemic Status of Tissue Donors. Obesity (Silver Spring) 2019; 27:756-766. [PMID: 30912621 DOI: 10.1002/oby.22435] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 01/12/2019] [Indexed: 11/11/2022]
Abstract
OBJECTIVE The study aimed to investigate how obesity and glycemic state affect mitochondrial respiration and ATP-generating pathways in mature human adipocytes. METHODS Subcutaneous (sc) and visceral (vc) adipocytes were isolated from patients undergoing abdominal surgery. Respiratory chain function was analyzed by high-resolution respirometry. Adipocyte ATP levels and lactate release were measured separately in the presence of either glycolysis (2-deoxy-D-glucose) or ATP synthase (oligomycin) inhibitors. RESULTS A significant negative correlation between oxidative phosphorylation capacity and the BMI of tissue donors found in sc adipocytes (P < 0.05). Furthermore, respirometry revealed an inverse relationship between BMI and the electron transfer system capacity of sc (P < 0.05) but not vc adipocytes. In both depots, the respiratory capacity was not affected by the glycemic state. A positive correlation between BMI and adipocyte lactate release was measured independently of the tissue origin (sc: P = 0.01; vc: P < 0.05). Direct ATP measurements indicated that energy demands of adipocytes were predominantly fulfilled by glycolytic activity. CONCLUSIONS The study's data suggest that obesity is the primary driver of impaired adipocyte mitochondrial respiration because the glycemic state did not further deteriorate this situation. The adipocytes' energy needs are covered primarily by the glycolytic pathway.
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Affiliation(s)
- Britta Wessels
- Department of Nutritional Medicine, Else Kröner-Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising-Weihenstephan, Germany
| | - Julius Honecker
- Department of Nutritional Medicine, Else Kröner-Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising-Weihenstephan, Germany
| | - Theresa Schöttl
- Department of Molecular Nutritional Medicine, Technical University of Munich, Freising-Weihenstephan, Germany
| | - Lynne Stecher
- Institute for Nutritional Medicine, Rechts der Isar Hospital, Technical University of Munich, Munich, Germany
| | - Martin Klingenspor
- Department of Molecular Nutritional Medicine, Technical University of Munich, Freising-Weihenstephan, Germany
| | - Hans Hauner
- Department of Nutritional Medicine, Else Kröner-Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising-Weihenstephan, Germany
- Institute for Nutritional Medicine, Rechts der Isar Hospital, Technical University of Munich, Munich, Germany
| | - Thomas Skurk
- Department of Nutritional Medicine, Else Kröner-Fresenius Center for Nutritional Medicine, Technical University of Munich, Freising-Weihenstephan, Germany
- Institute for Food and Health, Core Facility Human Studies, Technical University of Munich, Freising-Weihenstephan, Germany
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43
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Santos EW, Oliveira DC, Hastreiter A, Silva GB, Beltran JSDO, Rogero MM, Fock RA, Borelli P. Short-term high-fat diet affects macrophages inflammatory response, early signs of a long-term problem. BRAZ J PHARM SCI 2019. [DOI: 10.1590/s2175-97902019000117561] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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44
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Perivascular adipose tissue dysfunction aggravates adventitial remodeling in obese mini pigs via NLRP3 inflammasome/IL-1 signaling pathway. Acta Pharmacol Sin 2019; 40:46-54. [PMID: 30002491 DOI: 10.1038/s41401-018-0068-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 06/11/2018] [Indexed: 01/03/2023] Open
Abstract
Perivascular adipose tissue (PVAT), a special type of adipose tissue, closely surrounds vascular adventitia and produces numerous bioactive substances to maintain vascular homeostasis. PVAT dysfunction has a crucial role in regulating vascular remodeling, but the exact mechanisms remain unclear. In this study, we investigated whether and how obesity-induced PVAT dysfunction affected adventitia remodeling in early vascular injury stages. Mini pigs were fed a high sugar and fat diet for 6 months to induce metabolic syndrome and obesity. In the mini pigs, left carotid vascular injury was then generated using balloon dilation. Compared with normal mini pigs, obese mini pigs displayed significantly enhanced vascular injury-induced adventitial responses, evidenced by adventitia fibroblast (AF) proliferation and differentiation, and adventitia fibrosis, as well as exacerbated PVAT dysfunction characterized by increased accumulation of resident macrophages, particularly the M1 pro-inflammatory phenotype, increased expression of leptin and decreased expression of adiponectin, and production of pro-inflammatory cytokines interleukin (IL)-1β and IL-18. Primary AFs cultured in PVAT-conditioned medium from obese mini pigs also showed significantly increased proliferation and differentiation. We further revealed that activated nod-like receptor protein 3 (NLRP3) inflammasome and its downstream products, i.e., IL-1 family members such as IL-1β and IL-18 were upregulated in the PVAT of obese mini pigs; PVAT dysfunction was also demonstrated in preadipocytes treated with palmitic acid. Finally, we showed that pretreatment with IL-1 receptor (IL-1R) antagonist or IL-1R knockdown blocked AF proliferation and differentiation in AFs cultured in PVAT-conditioned medium. These results demonstrate that obesity-induced PVAT dysfunction aggravates adventitial remodeling after early vascular injury with elevated AF proliferation and differentiation via activating the NLRP3/IL-1 signaling pathway.
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45
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Gruzdeva OV, Borodkina AD, Akbasheva OE, Dileva YA, Antonova LV, Matveeva VG, Uchasova EG, Ivanov SV, Belik EV, Fanaskova EV, Karetnikova VN, Kokov AN, Barbarash OL. Influence of visceral obesity on the secretion of adipokines with epicardial adipocytes in patients with coronary heart disease. TERAPEVT ARKH 2018. [DOI: 10.26442/terarkh201890104-78] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Aim. To study adipokine-cytokine profile of epicardial adipocytes (EAT) and subcutaneous adipose tissue (SAT) in conjunction with the area of visceral adipose tissue (VAT), biochemical and clinical characteristics of patients with coronary heart disease. Materials and methods. Examined 84 patients (70 men and 14 women) with coronary artery disease. In fact the presence of visceral obesity (VO) the patients were divided into two groups. Patients VO the sampling of adipocytes of EAT and SAT, with subsequent cultivation and evaluation of adipokine and provospalitelna activity. Carried out the determination of carbohydrate and lipid metabolism, adipokine and pro-inflammatory status in the blood serum. Results and discussion. It was found that adipokine-cytokine profile of adipocytes of EAT and SAT differ. Adipocytes art of the disease on the background characterized by an increase IL-1, TNF-α, leptin-adiponectin relationships and a decrease in the content of protective factors: adiponectin and anti-inflammatory cytokine IL-10. While the SAT adipocytes was characterized by a decrease in the concentration of soluble receptor for leptin and the more pronounced leptinresistance, and the increase in proinflammatory cytokines was offset by the increase in the concentration of IL-10. The presence associated with multi-vessel coronary bed lesion, multifocal atherosclerosis, insulin resistance, atherogenic dyslipidemia, an imbalance of adipokines and markers of inflammation. So the value of the square VAT determined higher concentrations of leptin, TNF-α in adipocytes and serum, lipid and carbohydrate metabolism and a lower content of soluble receptor for leptin. Conclusion. Thus, the disease on the background of the status of the adipocytes of EAT characterized as a "metabolic inflammation", and may indicate the direct involvement of adipocytes in the pathogenesis of coronary artery disease, due to the formation of adipokine imbalance and the activation of proinflammatory reactions.
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Meng G, Tang X, Yang Z, Zhao Y, Curtis JM, McMullen TPW, Brindley DN. Dexamethasone decreases the autotaxin-lysophosphatidate-inflammatory axis in adipose tissue: implications for the metabolic syndrome and breast cancer. FASEB J 2018; 33:1899-1910. [PMID: 30192654 DOI: 10.1096/fj.201801226r] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Lysophosphatidate (LPA) signaling through 6 receptors is regulated by the balance of LPA production by autotaxin (ATX) vs. LPA degradation by lipid phosphate phosphatases (LPPs). LPA promotes an inflammatory cycle by increasing the synthesis of cyclooxygenase-2 and multiple inflammatory cytokines that stimulate further ATX production. We aimed to determine whether the anti-inflammatory glucocorticoid (GC) dexamethasone (Dex) functions partly by decreasing the ATX-LPA inflammatory cycle in adipose tissue, a major site of ATX secretion. Treatment of human adipose tissue with 10-1000 nM Dex decreased ATX secretion, increased LPP1 expression, and decreased mRNA expressions of IL-6, TNF-α, peroxisome proliferator-activated receptor (PPAR)-γ, and adiponectin. Cotreatment with rosiglitazone (an insulin sensitizer), insulin, or both abolished Dex-induced decreases in ATX and adiponectin secretion, but did not reverse Dex-induced decreases in secretions of 20 inflammatory cytokines and chemokines. Dex-treated mice exhibited lower ATX activity in plasma, brain, and adipose tissue; decreased mRNA levels for LPA and sphingosine 1-phosphate (S1P) receptors in brain; and decreased plasma concentrations of LPA and S1P. Our results establish a novel mechanism for the anti-inflammatory effects of Dex through decreased signaling by the ATX-LPA-inflammatory axis. The GC action in adipose tissue has implications for the pathogenesis of insulin resistance and obesity in metabolic syndrome and breast cancer treatment.-Meng, G., Tang, X., Yang, Z., Zhao, Y., Curtis, J. M., McMullen, T. P. W., Brindley, D. N. Dexamethasone decreases the autotaxin-lysophosphatidate-inflammatory axis in adipose tissue: implications for the metabolic syndrome and breast cancer.
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Affiliation(s)
- Guanmin Meng
- Signal Transduction Research Group, Department of Biochemistry, Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton, Alberta, Canada
| | - Xiaoyun Tang
- Signal Transduction Research Group, Department of Biochemistry, Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton, Alberta, Canada
| | - Zelei Yang
- Signal Transduction Research Group, Department of Biochemistry, Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton, Alberta, Canada
| | - YuanYuan Zhao
- Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada; and
| | - Jonathan M Curtis
- Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada; and
| | - Todd P W McMullen
- Department of Surgery, University of Alberta, Edmonton, Alberta, Canada
| | - David N Brindley
- Signal Transduction Research Group, Department of Biochemistry, Cancer Research Institute of Northern Alberta, University of Alberta, Edmonton, Alberta, Canada
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47
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Agrawal M, Yeo CR, Shabbir A, Chhay V, Silver DL, Magkos F, Vidal-Puig A, Toh SA. Fat storage-inducing transmembrane protein 2 (FIT2) is less abundant in type 2 diabetes, and regulates triglyceride accumulation and insulin sensitivity in adipocytes. FASEB J 2018; 33:430-440. [PMID: 30020828 DOI: 10.1096/fj.201701321rr] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Fat storage-inducing transmembrane protein 2 (FIT2) aids in partitioning of cellular triacylglycerol into lipid droplets. A genome-wide association study reported FITM2-R3H domain containing like-HNF4A locus to be associated with type 2 diabetes (T2DM) in East Asian populations. Mice with adipose tissue (AT)-specific FIT2 knockout exhibited lipodystrophic features, with reduced AT mass, insulin resistance, and greater inflammation in AT when fed a high-fat diet. The role of FIT2 in regulating human adipocyte function is not known. Here, we found FIT2 protein abundance is lower in subcutaneous and omental AT obtained from patients with T2DM compared with nondiabetic control subjects. Partial loss of FIT2 protein in primary human adipocytes attenuated their lipid storage capacity and induced insulin resistance. After palmitate treatment, triacylglycerol accumulation, insulin-induced Akt (Ser-473) phosphorylation, and insulin-stimulated glucose uptake were significantly reduced in FIT2 knockdown adipocytes compared with control cells. Gene expression of proinflammatory cytokines IL-18 and IL-6 and phosphorylation of the endoplasmic reticulum stress marker inositol-requiring enzyme 1α were greater in FIT2 knockdown adipocytes than in control cells. Our results show for the first time that FIT2 is associated with T2DM in humans and plays an integral role in maintaining metabolically healthy AT function.-Agrawal, M., Yeo, C. R., Shabbir, A., Chhay, V., Silver, D. L., Magkos, F., Vidal-Puig, A., Toh, S.-A. Fat storage-inducing transmembrane protein 2 (FIT2) is less abundant in type 2 diabetes, and regulates triglyceride accumulation and insulin sensitivity in adipocytes.
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Affiliation(s)
- Madhur Agrawal
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, Kentucky, USA
| | - Chia Rou Yeo
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Asim Shabbir
- Department of Surgery, National University Hospital, Singapore
| | - Vanna Chhay
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - David L Silver
- Signature Research Program in Cardiovascular and Metabolic Disorders, Duke-National University of Singapore Medical School, Singapore
| | - Faidon Magkos
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Singapore Institute of Clinical Sciences (SICS), Agency for Science, Technology, and Research (A*STAR), Singapore
| | - Antonio Vidal-Puig
- Metabolic Research Laboratories, Institute of Metabolic Science, Addenbrooke's Hospital, University of Cambridge, Cambridge, United Kingdom.,Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge, United Kingdom
| | - Sue-Anne Toh
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Department of Medicine, National University Health System, Singapore
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48
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Nicu C, Pople J, Bonsell L, Bhogal R, Ansell DM, Paus R. A guide to studying human dermal adipocytes in situ. Exp Dermatol 2018; 27:589-602. [DOI: 10.1111/exd.13549] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/19/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Carina Nicu
- Centre for Dermatology Research; The University of Manchester; Manchester UK
- NIHR Manchester Biomedical Research Centre; Manchester Academic Health Science Centre; Manchester UK
| | | | - Laura Bonsell
- Centre for Dermatology Research; The University of Manchester; Manchester UK
- NIHR Manchester Biomedical Research Centre; Manchester Academic Health Science Centre; Manchester UK
| | | | - David M. Ansell
- Centre for Dermatology Research; The University of Manchester; Manchester UK
- NIHR Manchester Biomedical Research Centre; Manchester Academic Health Science Centre; Manchester UK
| | - Ralf Paus
- Centre for Dermatology Research; The University of Manchester; Manchester UK
- NIHR Manchester Biomedical Research Centre; Manchester Academic Health Science Centre; Manchester UK
- Department of Dermatology and Cutaneous Surgery; Miller School of Medicine; University of Miami; Miami FL USA
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Inhibition of FOXO1 transcription factor in primary human adipocytes mimics the insulin-resistant state of type 2 diabetes. Biochem J 2018; 475:1807-1820. [PMID: 29724916 DOI: 10.1042/bcj20180144] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 05/01/2018] [Accepted: 05/02/2018] [Indexed: 12/11/2022]
Abstract
Type 2 diabetes is characterized by insulin resistance in the expanding adipose tissue of obesity. The insulin resistance manifests in human adipocytes as system-wide impairment of insulin signalling. An exception is the regulation of transcription factor FOXO1 (forkhead box protein O1), which is phosphorylated downstream of mTORC2 (mammalian/mechanistic target of rapamycin in complex with raptor) and is therefore not exhibiting impaired response to insulin. However, the abundance, and activity, of FOXO1 is reduced by half in adipocytes from patients with diabetes. To elucidate the effect of reduced FOXO1 activity, we here transduced human adipocytes with a dominant-negative construct of FOXO1 (DN-FOXO1). Inhibition of FOXO1 reduced the abundance of insulin receptor, glucose transporter-4, ribosomal protein S6, mTOR and raptor. Functionally, inhibition of FOXO1 induced an insulin-resistant state network-wide, a state that qualitatively and quantitatively mimicked adipocytes from patients with type 2 diabetes. In contrast, and in accordance with these effects of DN-FOXO1, overexpression of wild-type FOXO1 appeared to augment insulin signalling. We combined experimental data with mathematical modelling to show that the impaired insulin signalling in FOXO1-inhibited cells to a large extent can be explained by reduced mTORC1 activity - a mechanism that defines much of the diabetic state in human adipocytes. Our findings demonstrate that FOXO1 is critical for maintaining normal insulin signalling of human adipocytes.
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50
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Ormazabal P, Scazzocchio B, Varì R, Santangelo C, D'Archivio M, Silecchia G, Iacovelli A, Giovannini C, Masella R. Effect of protocatechuic acid on insulin responsiveness and inflammation in visceral adipose tissue from obese individuals: possible role for PTP1B. Int J Obes (Lond) 2018; 42:2012-2021. [PMID: 29769704 DOI: 10.1038/s41366-018-0075-4] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 01/24/2018] [Accepted: 02/18/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND/OBJECTIVES The occurrence of chronic inflammation in visceral adipose tissue (VAT) in obese subjects precipitates the development of insulin resistance and type 2 diabetes (T2D). Anthocyanins and their main metabolite protocatechuic acid (PCA) have been demonstrated to stimulate insulin signaling in human adipocytes. The aim of this study was to investigate whether PCA is able to modulate insulin responsiveness and inflammation in VAT from obese (OB) and normal weight (NW) subjects. SUBJECTS/METHODS VATs obtained from NW and OB subjects were incubated or not (control) with 100 μM PCA for 24 h. After incubation, tissues untreated and treated with PCA were acutely stimulated with insulin (20 nM, 20 min). PTP1B, p65 NF-κB, phospho-p65 NF-κB, IRS-1, IRβ, Akt, GLUT4 as well as basal and insulin-stimulated Tyr-IRS-1 and Ser-Akt phosphorylations were assessed by Western blotting in NW- and OB-VAT. Samples were assessed for PTP1B activity and adipocytokine secretion. RESULTS PCA restored insulin-induced phosphorylation in OB-VAT by increasing phospho-Tyr-IRS-1 and phospho-Ser-Akt after insulin stimulation as observed in NW-VAT (p < 0.05). PTP1B activity was lower in OB-VAT treated with PCA with respect to untreated (p < 0.05). Compared to non-treated tissues, PCA reduced phospho-p65 NF-κB and IL-6 in OB-VAT, and IL-1β in NW-VAT (p < 0.05); and increased adiponectin secretion in NW-VAT (p < 0.05). CONCLUSION PCA restores the insulin responsiveness of OB-VAT by increasing IRS-1 and Akt phosphorylation which could be related with the lower PTP1B activity found in PCA-treated OB-VAT. Furthermore, PCA diminishes inflammation in VAT. These results support the beneficial role of an anthocyanin-rich diet against inflammation and insulin resistance in obesity.
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Affiliation(s)
- Paulina Ormazabal
- Center for Gender-Specific Medicine, Italian National Institute of Health, Viale Regina Elena 299, Rome, 00161, Italy.,Center of Studies of Health, Society and Chronic non-Communicable Diseases, Institute of Health Sciences, University of O'Higgins, Alameda 611, Rancagua, Region of O'Higgins, Chile
| | - Beatrice Scazzocchio
- Center for Gender-Specific Medicine, Italian National Institute of Health, Viale Regina Elena 299, Rome, 00161, Italy
| | - Rosaria Varì
- Center for Gender-Specific Medicine, Italian National Institute of Health, Viale Regina Elena 299, Rome, 00161, Italy
| | - Carmela Santangelo
- Center for Gender-Specific Medicine, Italian National Institute of Health, Viale Regina Elena 299, Rome, 00161, Italy
| | - Massimo D'Archivio
- Center for Gender-Specific Medicine, Italian National Institute of Health, Viale Regina Elena 299, Rome, 00161, Italy
| | - Gianfranco Silecchia
- Department Medical-Surgical Sciences and Biotechnologies, Faculty of Pharmacy and Medicine, Sapienza University of Rome, Rome, Italy
| | | | - Claudio Giovannini
- Center for Gender-Specific Medicine, Italian National Institute of Health, Viale Regina Elena 299, Rome, 00161, Italy
| | - Roberta Masella
- Center for Gender-Specific Medicine, Italian National Institute of Health, Viale Regina Elena 299, Rome, 00161, Italy.
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