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Barbosa JL, de Melo MIA, da Silva Cunha P, de Miranda MC, Barrioni BR, Moreira CDF, da Fonseca Ferreira A, Arantes RME, de Sá MA, de Magalhães Pereira M, Rodrigues MA, Novikoff S, Gomes DA, de Goes AM. Development of a membrane and a bilayer of chitosan, gelatin, and polyhydroxybutyrate to be used as wound dressing for the regeneration of rat excisional wounds. J Biomed Mater Res A 2024; 112:82-98. [PMID: 37795871 DOI: 10.1002/jbm.a.37616] [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: 04/26/2023] [Revised: 08/09/2023] [Accepted: 09/07/2023] [Indexed: 10/06/2023]
Abstract
The skin is the largest organ in the human body that acts as a protective barrier from the outside environment. Certain dermatological pathologies or significant skin lesions can result in serious complications. Several studies have focused on the development of tissue-engineered skin substitutes. In this study, a new bilayer scaffold composed of a chitosan-gelatin membrane and a chitosan-polyhydroxybutyrate (PHB) porous matrix was synthesized and populated with human adipose-derived mesenchymal stem cells (hASCs) to be potentially used for wound dressing applications. By combining this membrane and porous matrix with the stem cells, we aimed to provide immunomodulation and differentiation capabilities for the wound environment, as well as mechanical strength and biocompatibility for the underlying tissue. The membrane was prepared from the mixture of chitosan and gelatin in a 2:1 ratio and the porous matrix was prepared from the mixture of chitosan and PHB, in equal proportions to form a final solution at 2.5% (m/v). Fourier transform infrared spectroscopy analysis showed the formation of blends, and micro-computed tomography, scanning electron microscopy and atomic force microscopy images demonstrated membrane roughness and matrix porosity. The MTT assay showed that the scaffolds were biocompatible with hASC. The membrane and the bilayer were used as dressing and support for cell migration in the dorsal excisional wound model in Wistar rats. Histological and gene transcriptional analyses showed that the animals that received the scaffolds regenerated the hair follicles in the deep dermis in the central region of the wound. Our results demonstrate the potential of these new biomaterials as dressings in wound healing studies, favoring tissue regeneration.
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Affiliation(s)
- Joana Lobato Barbosa
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Mariane Izabella Abreu de Melo
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
- Serviço de Radiofármacos, Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Belo Horizonte, Brazil
| | - Pricila da Silva Cunha
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
- Instituto Federal de Educação, Ciência e Tecnologia do Sudeste de Minas Gerais, Muriaé, Brazil
| | - Marcelo Coutinho de Miranda
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | | | | | - Rosa Maria Esteves Arantes
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Marcos Augusto de Sá
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | - Michele Angela Rodrigues
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
- Serviço de Radiofármacos, Centro de Desenvolvimento da Tecnologia Nuclear (CDTN), Belo Horizonte, Brazil
| | - Silviene Novikoff
- Transplants Immunobiology Laboratory, Department of Immunology, University of São Paulo, São Paulo, Brazil
| | - Dawidson Assis Gomes
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Alfredo Miranda de Goes
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Schwarz AP, Nikitina VA, Krytskaya DU, Shcherbakova KP, Trofimov AN. Reference gene expression stability within the rat brain under mild intermittent ketosis induced by supplementation with medium-chain triglycerides. PLoS One 2023; 18:e0273224. [PMID: 36757952 PMCID: PMC9910642 DOI: 10.1371/journal.pone.0273224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 08/04/2022] [Indexed: 02/10/2023] Open
Abstract
Reverse transcription followed by quantitative (real-time) polymerase chain reaction (RT-qPCR) has become the gold standard in mRNA expression analysis. However, it requires an accurate choice of reference genes for adequate normalization. The aim of this study was to validate the reference genes for qPCR experiments in the brain of rats in the model of mild ketosis established through supplementation with medium-chain triglycerides (MCT) and intermittent fasting. This approach allows to reproduce certain neuroprotective effects of the classical ketogenic diet while avoiding its adverse effects. Ketogenic treatment targets multiple metabolic pathways, which may affect the reference gene expression. The standard chow of adult Wistar rats was supplemented with MCT (2 ml/kg orogastrically, during 6 h of fasting) or water (equivolume) for 1 month. The mRNA expression of 9 housekeeping genes (Actb, B2m, Gapdh, Hprt1, Pgk1, Ppia, Rpl13a, Sdha, Ywhaz) in the medial prefrontal cortex, dorsal and ventral hippocampus was measured by RT-qPCR. Using the RefFinder® online tool, we have found that the reference gene stability ranking strongly depended on the analyzed brain region. The most stably expressed reference genes were found to be Ppia, Actb, and Rpl13a in the medial prefrontal cortex; Rpl13a, Ywhaz, and Pgk1 in the dorsal hippocampus; Ywhaz, Sdha, and Ppia in the ventral hippocampus. The B2m was identified as an invalid reference gene in the ventral hippocampus, while Sdha, Actb, and Gapdh were unstable in the dorsal hippocampus. The stabilities of the examined reference genes were lower in the dorsal hippocampus compared to the ventral hippocampus and the medial prefrontal cortex. When normalized to the three most stably expressed reference genes, the Gapdh mRNA was upregulated, while the Sdha mRNA was downregulated in the medial prefrontal cortex of MCT-fed animals. Thus, the expression stability of reference genes strongly depends on the examined brain regions. The dorsal and ventral hippocampal areas differ in reference genes stability rankings, which should be taken into account in the RT-qPCR experimental design.
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Affiliation(s)
- Alexander P. Schwarz
- Laboratory of Molecular Mechanisms of Neuronal Interactions, I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia
- * E-mail: (APS); (ANT)
| | - Veronika A. Nikitina
- Laboratory of Neurobiology of the Brain Integrative Functions, I.P. Pavlov Department of Physiology, Institute of Experimental Medicine, St. Petersburg, Russia
| | - Darya U. Krytskaya
- Laboratory of Neurobiology of the Brain Integrative Functions, I.P. Pavlov Department of Physiology, Institute of Experimental Medicine, St. Petersburg, Russia
| | - Ksenia P. Shcherbakova
- Laboratory of Neurobiology of the Brain Integrative Functions, I.P. Pavlov Department of Physiology, Institute of Experimental Medicine, St. Petersburg, Russia
| | - Alexander N. Trofimov
- Laboratory of Neurobiology of the Brain Integrative Functions, I.P. Pavlov Department of Physiology, Institute of Experimental Medicine, St. Petersburg, Russia
- * E-mail: (APS); (ANT)
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Kutlu T, Özkan H, Güvenç M. Tyrosol retards induction of fibrosis in rats. J Food Biochem 2021; 45:e13965. [PMID: 34636053 DOI: 10.1111/jfbc.13965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/01/2021] [Accepted: 09/28/2021] [Indexed: 11/29/2022]
Abstract
Liver fibrosis, which still does not have a standard treatment due to its complex pathogenesis, is an important cause of mortality and morbidity. In this study, it was aimed to examine the possible protective and antifibrotic effects of tyrosol on the liver through histopathologic, immunohistochemical, biochemical, and molecular methods in rats with chronic liver damage induced by thioacetamide (TAA). The study was carried out in four groups with eight rats in each group. Created groups are, respectively, control, TAA, tyrosol and TAA +tyrosol. Chronic liver damage was induced in the TAA and TAA +tyrosol groups by the addition of TAA (200 mg/L) to drinking water. Tyrosol (20 mg/kg/b.w./daily) was administered by oral gavage to tyrosol and TAA +tyrosol groups for 10 weeks. The results of this study demonstrate that the consumption of tyrosol alleviated the histopathologic changes such as inflammation, degeneration, and especially fibrosis induced by TAA in the liver. In addition, administration of tyrosol significantly attenuated alpha-smooth muscle actin (α-SMA) expression and apoptosis expression. Biochemically, it was determined that tyrosol increased glutathione (GSH) level, glutathione peroxidase (GSH.Px), and catalase (CAT) activities and showed antioxidant efficacy by reducing malondialdehyde (MDA) level. Moreover, it reduced inflammation and fibrosis by decreasing gene expression levels of tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), and transforming growth factor-beta (TGF-β1). Western blot analysis also revealed similar results in TGF-β1 expression. As a result, tyrosol suppressed fibrogenesis thanks to its antioxidant, anti-inflammatory, and anti-apoptotic effects and showed an antifibrotic effect in the liver. PRACTICAL APPLICATIONS: It is stated that tyrosol, a natural phenolic antioxidant found in olive oil, has neuroprotective, cardioprotective, anti-inflammatory, and anticancer properties. In this study, tyrosol suppressed fibrogenesis thanks to its antioxidant, anti-inflammatory, and anti-apoptotic effects and showed an antifibrotic effect in the liver. Olive oil has an important place in the Mediterranean diet, which reduces the incidence of chronic diseases. It is thought that the anti-fibrotic effect of tyrosol plays a role in this feature. As a result, it is thought that tyrosol can be used to prevent or slow down chronic liver diseases.
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Affiliation(s)
- Tuncer Kutlu
- Department of Pathology, Faculty of Veterinary Medicine, Hatay Mustafa Kemal University, Hatay, Turkey
| | - Hüseyin Özkan
- Department of Genetics, Faculty of Veterinary Medicine, Hatay Mustafa Kemal University, Hatay, Turkey
| | - Mehmet Güvenç
- Department of Physiology, Faculty of Veterinary Medicine, Hatay Mustafa Kemal University, Hatay, Turkey
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Ozkan H, Yakan A. Dietary high calories from sunflower oil, sucrose and fructose sources alters lipogenic genes expression levels in liver and skeletal muscle in rats. Ann Hepatol 2020; 18:715-724. [PMID: 31204236 DOI: 10.1016/j.aohep.2019.03.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/25/2019] [Accepted: 03/19/2019] [Indexed: 02/04/2023]
Abstract
INTRODUCTION AND OBJECTIVES The objectives of this study were to investigate the underlying mechanism of PPARα, LXRα, ChREBP, and SREBP-1c at the level of gene and protein expression with high-energy diets in liver and skeletal muscle. MATERIALS AND METHODS Metabolic changes with consumption of high fat (Hfat), high sucrose (Hsuc) and high fructose (Hfru) diets were assessed. Levels of mRNA and protein of PPARα, LXRα, ChREBP, and SREBP-1c were investigated. Body weight changes, histological structure of liver and plasma levels of some parameters were also examined. RESULTS In Hfru group, body weights were higher than other groups (P<0.05). In liver, LXRα levels of Hsuc and Hfru groups were upregulated as 1.87±0.30 (P<0.05) and 2.01±0.29 (P<0.01). SREBP-1c levels were upregulated as 4.52±1.25 (P<0.05); 4.05±1.11 (P<0.05) and 3.85±1.04 (P<0.05) in Hfat, Hsuc, and Hfru groups, respectively. In skeletal muscle, LXRα and SREBP-1c were upregulated as 1.77±0.30 (P<0.05) and 2.71±0.56 (P<0.05), in the Hfru group. Protein levels of ChREBP (33.92±8.84ng/mg protein (P<0.05)) and SREBP-1c (135.16±15.57ng/mg protein (P<0.001)) in liver were higher in Hfru group. In skeletal muscle, LXRα, ChREBP and SREBP-1c in Hfru group were 6.67±0.60, 7.11±1.29 and 43.17±6.37ng/mg, respectively (P<0.05; P<0.01; P<0.05). The rats in Hfru group had the most damaged livers. CONCLUSION Besides liver, fructose consumption significantly effects skeletal muscle and leads to weight gain, triggers lipogenesis and metabolic disorders.
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Affiliation(s)
- Huseyin Ozkan
- Department of Genetic, Faculty of Veterinary Medicine, University of Hatay Mustafa Kemal, Hatay, Turkey.
| | - Akin Yakan
- Department of Animal Breeding, Faculty of Veterinary Medicine, University of Erciyes, Kayseri, Turkey
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Comparative Evaluation of RNAlater Solution and Snap Frozen Methods for Gene Expression Studies in Different Tissues. REV ROMANA MED LAB 2020. [DOI: 10.2478/rrlm-2020-0024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Abstract
Introduction: Freezing of tissues with liquid nitrogen is the most common method in studies performed at the RNA level. However, the use of RNA stabilization solutions has become a popular alternative method. The aim of this study is to investigate the effectiveness of RNAlater on RNA stabilization in different tissues.
Material and Methods: In this study, RNA were isolated from the lung, heart, liver and skeletal muscle tissues of rats that were frozen with liquid nitrogen (snap frozen, SF group) or stored in RNAlater solution (RL group), and the changes in concentration, purity, reference genes expression, and fold-change levels between groups were analyzed.
Results: In the RL group, the concentration of RNA isolated from the liver tissues was higher (P<0.05), whereas the A260/280 ratio was lower in the heart and liver tissues (P<0.05). PPIA and SRP72 genes were found to have lower Ct values in the heart tissues of rats in the RL group (P<0.05 and P<0.001, respectively) than the SF group. Expression levels of PPIA, ACTB, and SRP72 genes across the tissues were found to be different between the groups (P<0.05). The gene expression level examined in terms of fold-change was significantly different in the RL group (upregulated up to 4 folds and downregulated about 0.5 fold) (P< 0.05).
Conclusions: The results showed that RNAlater can maintain the RNA integrity and can also change the results of gene expression because it does not inhibit biological activity. The snap freezing method is more reliable because gene expression is more stable in tissues frozen with liquid nitrogen.
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Schwarz AP, Kovalenko AA, Malygina DA, Postnikova TY, Zubareva OE, Zaitsev AV. Reference Gene Validation in the Brain Regions of Young Rats after Pentylenetetrazole-Induced Seizures. Biomedicines 2020; 8:biomedicines8080239. [PMID: 32717922 PMCID: PMC7460155 DOI: 10.3390/biomedicines8080239] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 07/20/2020] [Accepted: 07/21/2020] [Indexed: 12/14/2022] Open
Abstract
Reverse transcription followed by quantitative polymerase chain reaction (qRT-PCR) is a powerful and commonly used tool for gene expression analysis. It requires the right choice of stably expressed reference genes for accurate normalization. In this work, we aimed to select the optimal reference genes for qRT-PCR normalization within different brain areas during the first week following pentylenetetrazole-induced seizures in immature (P20–22) Wistar rats. We have tested the expression stability of a panel of nine housekeeping genes: Actb, Gapdh, B2m, Rpl13a, Sdha, Ppia, Hprt1, Pgk1, and Ywhaz. Based on geometric averaging of ranks obtained by four common algorithms (geNorm, NormFinder, BestKeeper, Comparative Delta-Ct), we found that the stability of tested reference genes varied significantly between different brain regions. The expression of the tested panel of genes was very stable within the medial prefrontal and temporal cortex, and the dorsal hippocampus. However, within the ventral hippocampus, the entorhinal cortex and amygdala expression levels of most of the tested genes were not steady. The data revealed that in the pentylenetetrazole-induced seizure model in juvenile rats, Pgk1, Ppia, and B2m expression are the most stable within the medial prefrontal cortex; Ppia, Rpl13a, and Sdha within the temporal cortex; Pgk1, Ppia, and Rpl13a within the entorhinal cortex; Gapdh, Ppia, and Pgk1 within the dorsal hippocampus; Rpl13a, Sdha, and Ppia within the ventral hippocampus; and Sdha, Pgk1, and Ppia within the amygdala. Our data indicate the need for a differential selection of reference genes across brain regions, including the dorsal and ventral hippocampus.
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Affiliation(s)
- Alexander P. Schwarz
- Sechenov Institute of Evolutionary Physiology and Biochemistry of RAS, 44, Toreza Prospekt, Saint Petersburg 194223, Russia; (A.P.S.); (A.A.K.); (D.A.M.); (T.Y.P.); (O.E.Z.)
| | - Anna A. Kovalenko
- Sechenov Institute of Evolutionary Physiology and Biochemistry of RAS, 44, Toreza Prospekt, Saint Petersburg 194223, Russia; (A.P.S.); (A.A.K.); (D.A.M.); (T.Y.P.); (O.E.Z.)
| | - Daria A. Malygina
- Sechenov Institute of Evolutionary Physiology and Biochemistry of RAS, 44, Toreza Prospekt, Saint Petersburg 194223, Russia; (A.P.S.); (A.A.K.); (D.A.M.); (T.Y.P.); (O.E.Z.)
| | - Tatiana Y. Postnikova
- Sechenov Institute of Evolutionary Physiology and Biochemistry of RAS, 44, Toreza Prospekt, Saint Petersburg 194223, Russia; (A.P.S.); (A.A.K.); (D.A.M.); (T.Y.P.); (O.E.Z.)
| | - Olga E. Zubareva
- Sechenov Institute of Evolutionary Physiology and Biochemistry of RAS, 44, Toreza Prospekt, Saint Petersburg 194223, Russia; (A.P.S.); (A.A.K.); (D.A.M.); (T.Y.P.); (O.E.Z.)
| | - Aleksey V. Zaitsev
- Sechenov Institute of Evolutionary Physiology and Biochemistry of RAS, 44, Toreza Prospekt, Saint Petersburg 194223, Russia; (A.P.S.); (A.A.K.); (D.A.M.); (T.Y.P.); (O.E.Z.)
- Almazov National Medical Research Centre, Institute of Experimental Medicine, 2 Akkuratova Street, Saint Petersburg 197341, Russia
- Correspondence:
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Tratwal J, Labella R, Bravenboer N, Kerckhofs G, Douni E, Scheller EL, Badr S, Karampinos DC, Beck-Cormier S, Palmisano B, Poloni A, Moreno-Aliaga MJ, Fretz J, Rodeheffer MS, Boroumand P, Rosen CJ, Horowitz MC, van der Eerden BCJ, Veldhuis-Vlug AG, Naveiras O. Reporting Guidelines, Review of Methodological Standards, and Challenges Toward Harmonization in Bone Marrow Adiposity Research. Report of the Methodologies Working Group of the International Bone Marrow Adiposity Society. Front Endocrinol (Lausanne) 2020; 11:65. [PMID: 32180758 PMCID: PMC7059536 DOI: 10.3389/fendo.2020.00065] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 01/31/2020] [Indexed: 12/14/2022] Open
Abstract
The interest in bone marrow adiposity (BMA) has increased over the last decade due to its association with, and potential role, in a range of diseases (osteoporosis, diabetes, anorexia, cancer) as well as treatments (corticosteroid, radiation, chemotherapy, thiazolidinediones). However, to advance the field of BMA research, standardization of methods is desirable to increase comparability of study outcomes and foster collaboration. Therefore, at the 2017 annual BMA meeting, the International Bone Marrow Adiposity Society (BMAS) founded a working group to evaluate methodologies in BMA research. All BMAS members could volunteer to participate. The working group members, who are all active preclinical or clinical BMA researchers, searched the literature for articles investigating BMA and discussed the results during personal and telephone conferences. According to the consensus opinion, both based on the review of the literature and on expert opinion, we describe existing methodologies and discuss the challenges and future directions for (1) histomorphometry of bone marrow adipocytes, (2) ex vivo BMA imaging, (3) in vivo BMA imaging, (4) cell isolation, culture, differentiation and in vitro modulation of primary bone marrow adipocytes and bone marrow stromal cell precursors, (5) lineage tracing and in vivo BMA modulation, and (6) BMA biobanking. We identify as accepted standards in BMA research: manual histomorphometry and osmium tetroxide 3D contrast-enhanced μCT for ex vivo quantification, specific MRI sequences (WFI and H-MRS) for in vivo studies, and RT-qPCR with a minimal four gene panel or lipid-based assays for in vitro quantification of bone marrow adipogenesis. Emerging techniques are described which may soon come to complement or substitute these gold standards. Known confounding factors and minimal reporting standards are presented, and their use is encouraged to facilitate comparison across studies. In conclusion, specific BMA methodologies have been developed. However, important challenges remain. In particular, we advocate for the harmonization of methodologies, the precise reporting of known confounding factors, and the identification of methods to modulate BMA independently from other tissues. Wider use of existing animal models with impaired BMA production (e.g., Pfrt-/-, KitW/W-v) and development of specific BMA deletion models would be highly desirable for this purpose.
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Affiliation(s)
- Josefine Tratwal
- Laboratory of Regenerative Hematopoiesis, Institute of Bioengineering and Swiss Institute for Experimental Cancer Research, Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Rossella Labella
- Tissue and Tumour Microenvironments Lab, The Kennedy Institute of Rheumatology, University of Oxford, Oxford, United Kingdom
| | - Nathalie Bravenboer
- Department of Clinical Chemistry, Amsterdam University Medical Centers, Vrije Universiteit, Amsterdam Movement Sciences, Amsterdam, Netherlands
- Section of Endocrinology, Department of Internal Medicine, Center for Bone Quality, Leiden University Medical Center, Leiden, Netherlands
| | - Greet Kerckhofs
- Biomechanics Lab, Institute of Mechanics, Materials and Civil Engineering, UCLouvain, Louvain-la-Neuve, Belgium
- Department Materials Engineering, KU Leuven, Leuven, Belgium
| | - Eleni Douni
- Laboratory of Genetics, Department of Biotechnology, Agricultural University of Athens, Athens, Greece
- Institute for Bioinnovation, Biomedical Sciences Research Center Alexander Fleming, Athens, Greece
| | - Erica L. Scheller
- Division of Bone and Mineral Diseases, Department of Medicine, Washington University, St. Louis, MO, United States
| | - Sammy Badr
- Univ. Lille, EA 4490 - PMOI - Physiopathologie des Maladies Osseuses Inflammatoires, Lille, France
- CHU Lille, Service de Radiologie et Imagerie Musculosquelettique, Lille, France
| | - Dimitrios C. Karampinos
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, Munich, Germany
| | - Sarah Beck-Cormier
- Inserm, UMR 1229, RMeS, Regenerative Medicine and Skeleton, Université de Nantes, ONIRIS, Nantes, France
- Université de Nantes, UFR Odontologie, Nantes, France
| | - Biagio Palmisano
- Department of Genetics and Development, Columbia University Irving Medical Center, New York, NY, United States
| | - Antonella Poloni
- Hematology, Department of Clinic and Molecular Science, Università Politecnica Marche-AOU Ospedali Riuniti, Ancona, Italy
| | - Maria J. Moreno-Aliaga
- Centre for Nutrition Research and Department of Nutrition, Food Science and Physiology, School of Pharmacy and Nutrition, University of Navarra, Pamplona, Spain
- IdiSNA, Navarra's Health Research Institute, Pamplona, Spain
- CIBERobn Physiopathology of Obesity and Nutrition, Centre of Biomedical Research Network, ISCIII, Madrid, Spain
| | - Jackie Fretz
- Department of Orthopaedics and Rehabilitation, Cellular and Developmental Biology, Yale University School of Medicine, New Haven, CT, United States
| | - Matthew S. Rodeheffer
- Department of Comparative Medicine and Molecular, Cellular and Developmental Biology, Yale University School of Medicine, New Haven, CT, United States
| | - Parastoo Boroumand
- Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - Clifford J. Rosen
- Maine Medical Center Research Institute, Center for Clinical and Translational Research, Scarborough, ME, United States
| | - Mark C. Horowitz
- Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, CT, United States
| | - Bram C. J. van der Eerden
- Laboratory for Calcium and Bone Metabolism, Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Annegreet G. Veldhuis-Vlug
- Section of Endocrinology, Department of Internal Medicine, Center for Bone Quality, Leiden University Medical Center, Leiden, Netherlands
- Maine Medical Center Research Institute, Center for Clinical and Translational Research, Scarborough, ME, United States
- Jan van Goyen Medical Center/OLVG Hospital, Department of Internal Medicine, Amsterdam, Netherlands
- *Correspondence: Annegreet G. Veldhuis-Vlug
| | - Olaia Naveiras
- Laboratory of Regenerative Hematopoiesis, Institute of Bioengineering and Swiss Institute for Experimental Cancer Research, Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
- Hematology Service, Departments of Oncology and Laboratory Medicine, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
- Olaia Naveiras ;
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Marques-Oliveira GH, Silva TM, Valadares HMS, Raposo HF, Carolino RDOG, Garófalo MAR, Anselmo-Franci JA, do Carmo Kettelhut I, de Oliveira HCF, Chaves VE. Identification of Suitable Reference Genes for Quantitative Gene Expression Analysis in Innervated and Denervated Adipose Tissue from Cafeteria Diet-Fed Rats. Lipids 2019; 54:231-244. [PMID: 31025715 DOI: 10.1002/lipd.12144] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 02/25/2019] [Accepted: 03/01/2019] [Indexed: 12/15/2022]
Abstract
Our previous studies show that cafeteria diet increases body adiposity, plasma insulin levels, and sympathetic activity to brown adipose tissue (BAT) and white adipose tissue (WAT) of Wistar rats, leading to rapid and progressive changes in the metabolic profile. The identification of suitable reference genes that are not affected by the experimental conditions is a critical step in accurate normalization of the reverse transcription quantitative real-time PCR (qRT-PCR), a commonly used assay to elucidate changes in the gene expression profile. In the present study, the effects of the cafeteria diet and sympathetic innervation on the gene expression of adrenoceptor beta 3 (Adrb3) from BAT and WAT were assessed using one of the most stable and one of the least stable genes as normalizers. Rats were fed the cafeteria diet and on the 17th day, interscapular BAT or retroperitoneal WAT was denervated and, 7 days after surgery, the contralateral innervated tissue was used as control. Ten reference genes were evaluated (18S, B2m, Actb, CypA, Gapdh, Hprt1, Rpl32, Tbp, Ubc, and Ywhaz) and ranked according to their stability using the following algorithms: geNorm, NormFinder, BestKeeper, and comparative delta threshold cycle (ΔC t ) method. According to the algorithms employed, the normalization of Adrb3 expression by the least stable genes produced opposite results compared with the most stable genes and literature data. In cafeteria and control diet-fed rats, the three most stable genes were Hprt1, Tbp, and Rpl32 for interscapular BAT and Tbp, B2m, and Hprt1 for retroperitoneal WAT, while the least stable genes were 18S, Actb, and Gapdh for both tissues.
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Affiliation(s)
- Gleuber Henrique Marques-Oliveira
- Laboratory of Physiology, Federal University of São João del-Rei, Avenue Sebastião Gonçalves Coelho, 400, 35.501-296, Divinópolis, Minas Gerais, Brazil
| | - Thaís Marques Silva
- Laboratory of Physiology, Federal University of São João del-Rei, Avenue Sebastião Gonçalves Coelho, 400, 35.501-296, Divinópolis, Minas Gerais, Brazil
| | - Helder Magno Silva Valadares
- Laboratory of Molecular Genetic, Federal University of São João del-Rei, Avenue Sebastião Gonçalves Coelho, 400, 35.501-296, Divinópolis, Minas Gerais, Brazil
| | - Helena Fonseca Raposo
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas, Monteiro Lobato Street, 255, 13.083-862, Campinas, São Paulo, Brazil
| | - Ruither de Oliveira Gomes Carolino
- Department of Morphology, Physiology and Basic Pathology, Ribeirão Preto Dentristy School, University of São Paulo, Avenue of Café s/n, 14.040-904, Ribeirão Preto, São Paulo, Brazil
| | - Maria Antonieta Rissato Garófalo
- Department of Physiology, Ribeirão Preto Medical School, University of São Paulo, Avenue of Café s/n, 14.040-904, Ribeirão Preto, São Paulo, Brazil
| | - Janete Aparecida Anselmo-Franci
- Department of Morphology, Physiology and Basic Pathology, Ribeirão Preto Dentristy School, University of São Paulo, Avenue of Café s/n, 14.040-904, Ribeirão Preto, São Paulo, Brazil
| | - Isis do Carmo Kettelhut
- Departments of Biochemistry-Immunology, Ribeirão Preto Medical School, University of São Paulo, Avenueof Café s/n, 14.040-904, Ribeirão Preto, São Paulo, Brazil
| | - Helena Coutinho Franco de Oliveira
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas, Monteiro Lobato Street, 255, 13.083-862, Campinas, São Paulo, Brazil
| | - Valéria Ernestânia Chaves
- Laboratory of Physiology, Federal University of São João del-Rei, Avenue Sebastião Gonçalves Coelho, 400, 35.501-296, Divinópolis, Minas Gerais, Brazil
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Krautgasser C, Mandl M, Hatzmann FM, Waldegger P, Mattesich M, Zwerschke W. Reliable reference genes for expression analysis of proliferating and adipogenically differentiating human adipose stromal cells. Cell Mol Biol Lett 2019; 24:14. [PMID: 30815013 PMCID: PMC6377720 DOI: 10.1186/s11658-019-0140-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 02/11/2019] [Indexed: 12/28/2022] Open
Abstract
Background The proliferation and adipogenic differentiation of adipose stromal cells (ASCs) are complex processes comprising major phenotypical alterations driven by up- and downregulation of hundreds of genes. Quantitative RT-PCR can be employed to measure relative changes in the expression of a gene of interest. This approach requires constitutively expressed reference genes for normalization to counteract inter-sample variations due to differences in RNA quality and quantity. Thus, a careful validation of quantitative RT-PCR reference genes is needed to accurately measure fluctuations in the expression of genes. Here, we evaluated candidate reference genes applicable for quantitative RT-PCR analysis of gene expression during proliferation and adipogenesis of human ASCs with the immunophenotype DLK1+/CD34+/CD90+/CD105+/CD45−/CD31−. Methods We evaluated the applicability of 10 candidate reference genes (GAPDH, TBP, RPS18, EF1A, TFRC, GUSB, PSMD5, CCNA2, LMNA and MRPL19) using NormFinder, geNorm and BestKeeper software. Results The results indicate that EF1A and MRPL19 are the most reliable reference genes for quantitative RT-PCR analysis of proliferating ASCs. PSMD5 serves as the most reliable endogenous control in adipogenesis. CCNA2 and LMNA were among the least consistent genes. Conclusions Applying these findings for future gene expression analyses will help elucidate ASC biology. Electronic supplementary material The online version of this article (10.1186/s11658-019-0140-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Claudia Krautgasser
- 1Division of Cell Metabolism and Differentiation Research, Institute for Biomedical Aging Research, University of Innsbruck, Rennweg 10, A-6020 Innsbruck, Austria
| | - Markus Mandl
- 1Division of Cell Metabolism and Differentiation Research, Institute for Biomedical Aging Research, University of Innsbruck, Rennweg 10, A-6020 Innsbruck, Austria
| | - Florian M Hatzmann
- 1Division of Cell Metabolism and Differentiation Research, Institute for Biomedical Aging Research, University of Innsbruck, Rennweg 10, A-6020 Innsbruck, Austria
| | - Petra Waldegger
- 1Division of Cell Metabolism and Differentiation Research, Institute for Biomedical Aging Research, University of Innsbruck, Rennweg 10, A-6020 Innsbruck, Austria
| | - Monika Mattesich
- 2Department of Plastic and Reconstructive Surgery, Innsbruck Medical University, Anichstraße 35, A-6020 Innsbruck, Austria
| | - Werner Zwerschke
- 1Division of Cell Metabolism and Differentiation Research, Institute for Biomedical Aging Research, University of Innsbruck, Rennweg 10, A-6020 Innsbruck, Austria
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