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Perera E, Román-Padilla J, Hidalgo-Pérez JA, Huesa-Cerdán R, Yúfera M, Mancera JM, Martos-Sitcha JA, Martínez-Rodríguez G, Ortiz-Delgado JB, Navarro-Guillén C, Rodriguez-Casariego JA. Tissue explants as tools for studying the epigenetic modulation of the GH-IGF-I axis in farmed fish. Front Physiol 2024; 15:1410660. [PMID: 38966230 PMCID: PMC11222784 DOI: 10.3389/fphys.2024.1410660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Accepted: 06/03/2024] [Indexed: 07/06/2024] Open
Abstract
Somatic growth in vertebrates is mainly controlled by the growth hormone (GH)/insulin-like growth factor I (IGF-I) axis. The role of epigenetic mechanisms in regulating this axis in fish is far from being understood. This work aimed to optimize and evaluate the use of short-term culture of pituitary and liver explants from a farmed fish, the gilthead seabream Sparus aurata, for studying epigenetic mechanisms involved in GH/IGF-I axis regulation. Our results on viability, structure, proliferation, and functionality of explants support their use in short-term assays. Pituitary explants showed no variation in gh expression after exposure to the DNA methylation inhibitor decitabine (5-Aza-2'-deoxycytidine; DAC), despite responding to DAC by changing dnmt3bb and tet1 expression, and TET activity, producing an increase in overall DNA hydroxymethylation. Conversely, in liver explants, DAC had no effects on dnmt s and tet s expression or activity, but modified the expression of genes from the GH-IGF-I axis. In particular, the expression of igfbp2a was increased and that of igfbp4, ghri and ghrii was decreased by DAC as well as by genistein, which is suggestive of impaired growth. While incubation of liver explants with S-adenosylmethionine (SAM) produced no clear effects, it is proposed that nutrients must ensure the methylation milieu within the liver in the fish to sustain proper growth, which need further in vivo verification. Pituitary and liver explants from S. aurata can be further used as described herein for the screening of inhibitors or activators of epigenetic regulators, as well as for assessing epigenetic mechanisms behind GH-IGF-I variation in farmed fish.
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Affiliation(s)
- Erick Perera
- Department of Marine Biology and Aquaculture, Instituto de Ciencias Marinas de Andalucía (ICMAN-CSIC), Spanish National Research Council (CSIC), Puerto Real, Spain
| | - Javier Román-Padilla
- Department of Biology, Faculty of Marine and Environmental Sciences, Instituto Universitario de Investigación Marina (INMAR), University of Cadiz, Campus de Excelencia Internacional del Mar (CEIMAR), Puerto Real, Spain
| | - Juan Antonio Hidalgo-Pérez
- Department of Marine Biology and Aquaculture, Instituto de Ciencias Marinas de Andalucía (ICMAN-CSIC), Spanish National Research Council (CSIC), Puerto Real, Spain
| | - Rubén Huesa-Cerdán
- Department of Marine Biology and Aquaculture, Instituto de Ciencias Marinas de Andalucía (ICMAN-CSIC), Spanish National Research Council (CSIC), Puerto Real, Spain
| | - Manuel Yúfera
- Department of Marine Biology and Aquaculture, Instituto de Ciencias Marinas de Andalucía (ICMAN-CSIC), Spanish National Research Council (CSIC), Puerto Real, Spain
| | - Juan Miguel Mancera
- Department of Biology, Faculty of Marine and Environmental Sciences, Instituto Universitario de Investigación Marina (INMAR), University of Cadiz, Campus de Excelencia Internacional del Mar (CEIMAR), Puerto Real, Spain
| | - Juan Antonio Martos-Sitcha
- Department of Biology, Faculty of Marine and Environmental Sciences, Instituto Universitario de Investigación Marina (INMAR), University of Cadiz, Campus de Excelencia Internacional del Mar (CEIMAR), Puerto Real, Spain
| | - Gonzalo Martínez-Rodríguez
- Department of Marine Biology and Aquaculture, Instituto de Ciencias Marinas de Andalucía (ICMAN-CSIC), Spanish National Research Council (CSIC), Puerto Real, Spain
| | - Juan Bosco Ortiz-Delgado
- Department of Marine Biology and Aquaculture, Instituto de Ciencias Marinas de Andalucía (ICMAN-CSIC), Spanish National Research Council (CSIC), Puerto Real, Spain
| | - Carmen Navarro-Guillén
- Department of Marine Biology and Aquaculture, Instituto de Ciencias Marinas de Andalucía (ICMAN-CSIC), Spanish National Research Council (CSIC), Puerto Real, Spain
| | - Javier A. Rodriguez-Casariego
- Environmental Epigenetics Laboratory, Institute of Environment, Florida International University, Miami, FL, United States
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Sánchez-Moya A, Balbuena-Pecino S, Vélez EJ, Perelló-Amorós M, García-Meilán I, Fontanillas R, Calduch-Giner JÀ, Pérez-Sánchez J, Fernández-Borràs J, Blasco J, Gutiérrez J. Cysteamine improves growth and the GH/IGF axis in gilthead sea bream ( Sparus aurata): in vivo and in vitro approaches. Front Endocrinol (Lausanne) 2023; 14:1211470. [PMID: 37547324 PMCID: PMC10400459 DOI: 10.3389/fendo.2023.1211470] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 06/09/2023] [Indexed: 08/08/2023] Open
Abstract
Aquaculture is the fastest-growing food production sector and nowadays provides more food than extractive fishing. Studies focused on the understanding of how teleost growth is regulated are essential to improve fish production. Cysteamine (CSH) is a novel feed additive that can improve growth through the modulation of the GH/IGF axis; however, the underlying mechanisms and the interaction between tissues are not well understood. This study aimed to investigate the effects of CSH inclusion in diets at 1.65 g/kg of feed for 9 weeks and 1.65 g/kg or 3.3 g/kg for 9 weeks more, on growth performance and the GH/IGF-1 axis in plasma, liver, stomach, and white muscle in gilthead sea bream (Sparus aurata) fingerlings (1.8 ± 0.03 g) and juveniles (14.46 ± 0.68 g). Additionally, the effects of CSH stimulation in primary cultured muscle cells for 4 days on cell viability and GH/IGF axis relative gene expression were evaluated. Results showed that CSH-1.65 improved growth performance by 16% and 26.7% after 9 and 18 weeks, respectively, while CSH-3.3 improved 32.3% after 18 weeks compared to control diet (0 g/kg). However, no significant differences were found between both experimental doses. CSH reduced the plasma levels of GH after 18 weeks and increased the IGF-1 ones after 9 and 18 weeks. Gene expression analysis revealed a significant upregulation of the ghr-1, different igf-1 splice variants, igf-2 and the downregulation of the igf-1ra and b, depending on the tissue and dose. Myocytes stimulated with 200 µM of CSH showed higher cell viability and mRNA levels of ghr1, igf-1b, igf-2 and igf-1rb compared to control (0 µM) in a similar way to white muscle. Overall, CSH improves growth and modulates the GH/IGF-1 axis in vivo and in vitro toward an anabolic status through different synergic ways, revealing CSH as a feasible candidate to be included in fish feed.
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Affiliation(s)
- Albert Sánchez-Moya
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
| | - Sara Balbuena-Pecino
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
| | - Emilio J. Vélez
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
| | - Miquel Perelló-Amorós
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
| | - Irene García-Meilán
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
| | | | - Josep Àlvar Calduch-Giner
- Nutrigenomics and Fish Growth Endocrinology Group, Institute of Aquaculture Torre de la Sal (IATS, Spanish National Research Council (CSIC)), Castellón, Spain
| | - Jaume Pérez-Sánchez
- Nutrigenomics and Fish Growth Endocrinology Group, Institute of Aquaculture Torre de la Sal (IATS, Spanish National Research Council (CSIC)), Castellón, Spain
| | - Jaume Fernández-Borràs
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
| | - Josefina Blasco
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
| | - Joaquin Gutiérrez
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
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3
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Otero-Tarrazón A, Perelló-Amorós M, Jorge-Pedraza V, Moshayedi F, Sánchez-Moya A, García-Pérez I, Fernández-Borràs J, García de la serrana D, Navarro I, Blasco J, Capilla E, Gutierrez J. Muscle regeneration in gilthead sea bream: Implications of endocrine and local regulatory factors and the crosstalk with bone. Front Endocrinol (Lausanne) 2023; 14:1101356. [PMID: 36755925 PMCID: PMC9899866 DOI: 10.3389/fendo.2023.1101356] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 01/03/2023] [Indexed: 01/24/2023] Open
Abstract
Fish muscle regeneration is still a poorly known process. In the present study, an injury was done into the left anterior epaxial skeletal muscle of seventy 15 g gilthead sea bream (Sparus aurata) juveniles to evaluate at days 0, 1, 2, 4, 8, 16 and 30 post-wound, the expression of several muscle genes. Moreover, transcripts' expression in the bone (uninjured tissue) was also analyzed. Histology of the muscle showed the presence of dead tissue the first day after injury and how the damaged fibers were removed and replaced by new muscle fibers by day 16 that kept growing up to day 30. Gene expression results showed in muscle an early upregulation of igf-2 and a downregulation of ghr-1 and igf-1. Proteolytic systems expression increased with capn2 and ctsl peaking at 1 and 2 days post-injury, respectively and mafbx at day 8. A pattern of expression that fitted well with active myogenesis progression 16 days after the injury was then observed, with the recovery of igf-1, pax7, cmet, and cav1 expression; and later on, that of cav3 as well. Furthermore, the first days post-injury, the cytokines il-6 and il-15 were also upregulated confirming the tissue inflammation, while tnfα was only upregulated at days 16 and 30 to induce satellite cells recruitment; overall suggesting a possible role for these molecules as myokines. The results of the bone transcripts showed an upregulation first, of bmp2 and ctsk at days 1 and 2, respectively; then, ogn1 and ocn peaked at day 4 in parallel to mstn2 downregulation, and runx2 and ogn2 increased after 8 days of muscle injury, suggesting a possible tissue crosstalk during the regenerative process. Overall, the present model allows studying the sequential involvement of different regulatory molecules during muscle regeneration, as well as the potential relationship between muscle and other tissues such as bone to control musculoskeletal development and growth, pointing out an interesting new line of research in this group of vertebrates.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Joaquin Gutierrez
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain
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Chandhini S, Trumboo B, Jose S, Varghese T, Rajesh M, Kumar VJR. Insulin-like growth factor signalling and its significance as a biomarker in fish and shellfish research. FISH PHYSIOLOGY AND BIOCHEMISTRY 2021; 47:1011-1031. [PMID: 33987811 DOI: 10.1007/s10695-021-00961-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 05/04/2021] [Indexed: 06/12/2023]
Abstract
The insulin-like growth factor signalling system comprises insulin-like growth factors, insulin-like growth factor receptors and insulin-like growth factor-binding proteins. Along with the growth hormones, insulin-like growth factor signalling is very pivotal in the growth and development of all vertebrates. In fishes, insulin-like growth factors play an important role in osmoregulation, besides the neuroendocrine regulation of growth. Insulin-like growth factor concentration in plasma can assess the growth in fishes and shellfishes and therefore widely applied in nutritional research as an indicator to evaluate the performance of selected nutrients. The present review summarizes the role of insulin-like growth factor signalling in fishes and shellfishes, its significance in aquaculture and in evaluating growth, reproduction and development, and discusses the utility of this system as biomarkers for early indication of growth in aquaculture.
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Affiliation(s)
- S Chandhini
- Centre of Excellence in Sustainable Aquaculture and Aquatic Animal Health Management (CAAHM), Department of Aquaculture, Kerala University of Fisheries and Ocean Studies, Panangad, Kochi, 682506, Kerala, India
| | - Bushra Trumboo
- Centre of Excellence in Sustainable Aquaculture and Aquatic Animal Health Management (CAAHM), Department of Aquaculture, Kerala University of Fisheries and Ocean Studies, Panangad, Kochi, 682506, Kerala, India
| | - Seena Jose
- National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Kochi, 682016, Kerala, India
| | - Tincy Varghese
- Fish Physiology and Biochemistry Division, ICAR-Central Institute of Fisheries Education, Off-Yari Road, Versova, Andheri (W), Mumbai, 400061, India
| | - M Rajesh
- ICAR-Directorate of Coldwater Fisheries Research, Anusandhan Bhawan, Bhimtal, 263136, Uttarakhand, India
| | - V J Rejish Kumar
- Centre of Excellence in Sustainable Aquaculture and Aquatic Animal Health Management (CAAHM), Department of Aquaculture, Kerala University of Fisheries and Ocean Studies, Panangad, Kochi, 682506, Kerala, India.
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Perelló-Amorós M, García-Pérez I, Sánchez-Moya A, Innamorati A, Vélez EJ, Achaerandio I, Pujolà M, Calduch-Giner J, Pérez-Sánchez J, Fernández-Borràs J, Blasco J, Gutiérrez J. Diet and Exercise Modulate GH-IGFs Axis, Proteolytic Markers and Myogenic Regulatory Factors in Juveniles of Gilthead Sea Bream ( Sparus aurata). Animals (Basel) 2021; 11:ani11082182. [PMID: 34438639 PMCID: PMC8388392 DOI: 10.3390/ani11082182] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 07/14/2021] [Accepted: 07/20/2021] [Indexed: 12/16/2022] Open
Abstract
Simple Summary The effects of exercise and diet on growth markers were analyzed in gilthead sea bream juveniles. Under voluntary swimming, fish fed with a high-lipid diet showed lower growth, growth hormone (GH) plasma levels, flesh texture, and higher expression of main muscle proteolytic markers than those fed with a high-protein diet. However, under sustained exercise, most of the differences disappeared and fish growth was similar regardless of the diet, suggesting that exercise improves nutrients use allowing a reduction of the dietary protein, which results in an enhanced aquaculture production. Abstract The physiological and endocrine benefits of sustained exercise in fish were largely demonstrated, and this work examines how the swimming activity can modify the effects of two diets (high-protein, HP: 54% proteins, 15% lipids; high-energy, HE: 50% proteins, 20% lipids) on different growth performance markers in gilthead sea bream juveniles. After 6 weeks of experimentation, fish under voluntary swimming and fed with HP showed significantly higher circulating growth hormone (GH) levels and plasma GH/insulin-like growth-1 (IGF-1) ratio than fish fed with HE, but under exercise, differences disappeared. The transcriptional profile of the GH-IGFs axis molecules and myogenic regulatory factors in liver and muscle was barely affected by diet and swimming conditions. Under voluntary swimming, fish fed with HE showed significantly increased mRNA levels of capn1, capn2, capn3, capns1a, n3, and ub, decreased gene and protein expression of Ctsl and Mafbx and lower muscle texture than fish fed with HP. When fish were exposed to sustained exercise, diet-induced differences in proteases’ expression and muscle texture almost disappeared. Overall, these results suggest that exercise might be a useful tool to minimize nutrient imbalances and that proteolytic genes could be good markers of the culture conditions and dietary treatments in fish.
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Affiliation(s)
- Miquel Perelló-Amorós
- Departament de Biologia Cellular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain; (M.P.-A.); (I.G.-P.); (A.S.-M.); (A.I.); (J.F.-B.); (J.B.)
| | - Isabel García-Pérez
- Departament de Biologia Cellular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain; (M.P.-A.); (I.G.-P.); (A.S.-M.); (A.I.); (J.F.-B.); (J.B.)
| | - Albert Sánchez-Moya
- Departament de Biologia Cellular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain; (M.P.-A.); (I.G.-P.); (A.S.-M.); (A.I.); (J.F.-B.); (J.B.)
| | - Arnau Innamorati
- Departament de Biologia Cellular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain; (M.P.-A.); (I.G.-P.); (A.S.-M.); (A.I.); (J.F.-B.); (J.B.)
| | - Emilio J. Vélez
- Université de Pau et des Pays de l’Adour, E2S UPPA, INRAE, UMR1419 Nutrition Métabolisme et Aquaculture, F-64310 Saint-Pée-sur-Nivelle, France;
| | - Isabel Achaerandio
- Department d’Enginyeria Agroalimentària i Biotecnologia, Escola Superior d’Agricultura de Barcelona, Universitat Politècnica de Catalunya BarcelonaTech, 08860 Barcelona, Spain; (I.A.); (M.P.)
| | - Montserrat Pujolà
- Department d’Enginyeria Agroalimentària i Biotecnologia, Escola Superior d’Agricultura de Barcelona, Universitat Politècnica de Catalunya BarcelonaTech, 08860 Barcelona, Spain; (I.A.); (M.P.)
| | - Josep Calduch-Giner
- Nutrigenomics and Fish Growth Endocrinology, Institute of Aquaculture Torre de la Sal (CSIC), Ribera de Cabanes, 12595 Castellón, Spain; (J.C.-G.); (J.P.-S.)
| | - Jaume Pérez-Sánchez
- Nutrigenomics and Fish Growth Endocrinology, Institute of Aquaculture Torre de la Sal (CSIC), Ribera de Cabanes, 12595 Castellón, Spain; (J.C.-G.); (J.P.-S.)
| | - Jaume Fernández-Borràs
- Departament de Biologia Cellular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain; (M.P.-A.); (I.G.-P.); (A.S.-M.); (A.I.); (J.F.-B.); (J.B.)
| | - Josefina Blasco
- Departament de Biologia Cellular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain; (M.P.-A.); (I.G.-P.); (A.S.-M.); (A.I.); (J.F.-B.); (J.B.)
| | - Joaquim Gutiérrez
- Departament de Biologia Cellular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain; (M.P.-A.); (I.G.-P.); (A.S.-M.); (A.I.); (J.F.-B.); (J.B.)
- Correspondence: ; Tel.: +34-934-021-532
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6
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Millan-Cubillo AF, Martin-Perez M, Ibarz A, Fernandez-Borras J, Gutiérrez J, Blasco J. Proteomic characterization of primary cultured myocytes in a fish model at different myogenesis stages. Sci Rep 2019; 9:14126. [PMID: 31576009 PMCID: PMC6773717 DOI: 10.1038/s41598-019-50651-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 09/12/2019] [Indexed: 01/30/2023] Open
Abstract
Myogenesis is a complex two-phase process of proliferation and differentiation, which seems to be greatly conserved in vertebrates. For the first time in fish, we identify the changes that occur in the proteome during this process in a gilthead sea bream (Sparus aurata) myocyte primary cell culture (on days 4, 8 and 12), using 2-D gel electrophoresis and LC-MS/MS. A significant increase of myogenin expression at day 8 marked the transition from proliferation to differentiation. Of the 898 spots in the proteome analysis, the 25 protein spots overexpressed on day 4 and the 15 protein spots overexpressed on day 8 indicate the end of proliferation and the beginning of differentiation, respectively. Proliferation was characterized by enrichment of proteins involved in actin cytoskeleton remodelling and in cellular metabolic processes (transcription, ubiquitination, response to stress and glucose metabolism). During differentiation, 41 proteins were overexpressed and 51 underexpressed; many of them related to biosynthetic processes (RNA and protein synthesis and folding, and pentose pathways), terminal myotube formation and muscle contraction. The main cellular processes of both phases of muscle development in fish are similar with those observed in mammals but extended in time, allowing sequential studies of myogenesis.
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Affiliation(s)
- Antonio F Millan-Cubillo
- Departament of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, 08028, Barcelona, Spain
| | - Miguel Martin-Perez
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, 08028, Barcelona, Spain
| | - Antoni Ibarz
- Departament of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, 08028, Barcelona, Spain
| | - Jaume Fernandez-Borras
- Departament of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, 08028, Barcelona, Spain
| | - Joaquim Gutiérrez
- Departament of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, 08028, Barcelona, Spain
| | - Josefina Blasco
- Departament of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, 08028, Barcelona, Spain.
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7
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Vélez EJ, Perelló-Amorós M, Lutfi E, Azizi S, Capilla E, Navarro I, Pérez-Sánchez J, Calduch-Giner JA, Blasco J, Fernández-Borràs J, Gutiérrez J. A long-term growth hormone treatment stimulates growth and lipolysis in gilthead sea bream juveniles. Comp Biochem Physiol A Mol Integr Physiol 2019; 232:67-78. [PMID: 30885833 DOI: 10.1016/j.cbpa.2019.03.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 03/08/2019] [Accepted: 03/12/2019] [Indexed: 02/06/2023]
Abstract
The enhancement of the endocrine growth hormone (GH)/insulin-like growth factor I (IGF-I) system by the treatment with a sustained release formulation of a recombinant bovine GH (rBGH), is a good strategy to investigate growth optimization in aquaculture fish species. To further deepen into the knowledge of rBGH effects in fish and to estimate the growth potential of juveniles of gilthead sea bream, the present work evaluated rBGH injection on growth, GH/IGF-I axis and lipid metabolism modulation, and explored the conservation of GH effects provoked by the in vivo treatment using in vitro models of different tissues. The rBGH treatment increased body weight and specific growth rate (SGR) in juveniles and potentiated hyperplastic muscle growth while reducing circulating triglyceride levels. Moreover, the results demonstrated that the in vivo treatment enhanced also lipolysis in both isolated hepatocytes and adipocytes, as well as in day 4 cultured myocytes. Furthermore, these cultured myocytes extracted from rBGH-injected fish presented higher gene expression of GH/IGF-I axis-related molecules and myogenic regulatory factors, as well as stimulated myogenesis (i.e. increased protein expression of a proliferation and a differentiation marker) compared to Control fish-derived cells. These data, suggested that cells in vitro can retain some of the pathways activated by in vivo treatments in fish, what can be considered an interesting line of applied research. Overall, the results showed that rBGH stimulates somatic growth, including specifically muscle hyperplasia, as well as lipolytic activity in gilthead sea bream juveniles.
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Affiliation(s)
- Emilio J Vélez
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain.
| | - Miquel Perelló-Amorós
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain.
| | - Esmail Lutfi
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain.
| | - Sheida Azizi
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain.
| | - Encarnación Capilla
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain.
| | - Isabel Navarro
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain.
| | - Jaume Pérez-Sánchez
- Nutrigenomics and Fish Growth Endocrinology, Institute of Aquaculture Torre de la Sal (CSIC), 12595 Ribera de Cabanes, Castellón, Spain.
| | - Josep A Calduch-Giner
- Nutrigenomics and Fish Growth Endocrinology, Institute of Aquaculture Torre de la Sal (CSIC), 12595 Ribera de Cabanes, Castellón, Spain.
| | - Josefina Blasco
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain.
| | - Jaume Fernández-Borràs
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain.
| | - Joaquim Gutiérrez
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, 08028 Barcelona, Spain.
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8
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Vélez EJ, Perelló M, Azizi S, Moya A, Lutfi E, Pérez-Sánchez J, Calduch-Giner JA, Navarro I, Blasco J, Fernández-Borràs J, Capilla E, Gutiérrez J. Recombinant bovine growth hormone (rBGH) enhances somatic growth by regulating the GH-IGF axis in fingerlings of gilthead sea bream (Sparus aurata). Gen Comp Endocrinol 2018; 257:192-202. [PMID: 28666853 DOI: 10.1016/j.ygcen.2017.06.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 06/16/2017] [Accepted: 06/22/2017] [Indexed: 02/07/2023]
Abstract
The growth hormone (GH)/insulin-like growth factors (IGFs) endocrine axis is the main growth-regulator system in vertebrates. Some authors have demonstrated the positive effects on growth of a sustained-release formulation of a recombinant bovine GH (rBGH) in different fish species. The aim of this work was to characterize the effects of a single injection of rBGH in fingerlings of gilthead sea bream on growth, GH-IGF axis, and both myogenic and osteogenic processes. Thus, body weight and specific growth rate were significantly increased in rBGH-treated fish respect to control fish at 6weeks post-injection, whereas the hepatosomatic index was decreased and the condition factor and mesenteric fat index were unchanged, altogether indicating enhanced somatic growth. Moreover, rBGH injection increased the plasma IGF-I levels in parallel with a rise of hepatic mRNA from total IGF-I, IGF-Ic and IGF-II, the binding proteins IGFBP-1a and IGFBP-2b, and also the receptors IGF-IRb, GHR-I and GHR-II. In skeletal muscle, the expression of IGF-Ib and GHR-I was significantly increased but that of IGF-IRb was reduced; the mRNA levels of myogenic regulatory factors, proliferation and differentiation markers (PCNA and MHC, respectively), or that of different molecules of the signaling pathway (TOR/AKT) were unaltered. Besides, the growth inhibitor myostatin (MSTN1 and MSTN2) and the hypertrophic marker (MLC2B) expression resulted significantly enhanced, suggesting altogether that the muscle is in a non-proliferative stage of development. Contrarily in bone, although the expression of most molecules of the GH/IGF axis was decreased, the mRNA levels of several osteogenic genes were increased. The histology analysis showed a GH induced lipolytic effect with a clear decrease in the subcutaneous fat layer. Overall, these results reveal that a better growth potential can be achieved on this species and supports the possibility to improve growth and quality through the optimization of its culture conditions.
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Affiliation(s)
- Emilio J Vélez
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Miquel Perelló
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Sheida Azizi
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Alberto Moya
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Esmail Lutfi
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Jaume Pérez-Sánchez
- Nutrigenomics and Fish Growth Endocrinology, Institute of Aquaculture Torre de la Sal (CSIC), 12595 Ribera de Cabanes, Castellón, Spain
| | - Josep A Calduch-Giner
- Nutrigenomics and Fish Growth Endocrinology, Institute of Aquaculture Torre de la Sal (CSIC), 12595 Ribera de Cabanes, Castellón, Spain
| | - Isabel Navarro
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Josefina Blasco
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Jaume Fernández-Borràs
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Encarnación Capilla
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Joaquim Gutiérrez
- Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain.
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9
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Pérez-Sánchez J, Simó-Mirabet P, Naya-Català F, Martos-Sitcha JA, Perera E, Bermejo-Nogales A, Benedito-Palos L, Calduch-Giner JA. Somatotropic Axis Regulation Unravels the Differential Effects of Nutritional and Environmental Factors in Growth Performance of Marine Farmed Fishes. Front Endocrinol (Lausanne) 2018; 9:687. [PMID: 30538673 PMCID: PMC6277588 DOI: 10.3389/fendo.2018.00687] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 11/02/2018] [Indexed: 12/23/2022] Open
Abstract
The Gh/Prl/Sl family has evolved differentially through evolution, resulting in varying relationships between the somatotropic axis and growth rates within and across fish species. This is due to a wide range of endogenous and exogenous factors that make this association variable throughout season and life cycle, and the present minireview aims to better define the nutritional and environmental regulation of the endocrine growth cascade over precisely defined groups of fishes, focusing on Mediterranean farmed fishes. As a result, circulating Gh and Igf-i are revitalized as reliable growth markers, with a close association with growth rates of gilthead sea bream juveniles with deficiency signs in both macro- or micro-nutrients. This, together with other regulated responses, promotes the use of Gh and Igf-i as key performance indicators of growth, aerobic scope, and nutritional condition in gilthead sea bream. Moreover, the sirtuin-energy sensors might modulate the growth-promoting action of somatotropic axis. In this scenario, transcripts of igf-i and gh receptors mirror changes in plasma Gh and Igf-i levels, with the ghr-i/ghr-ii expression ratio mostly unaltered over season. However, this ratio is nutritionally regulated, and enriched plant-based diets or diets with specific nutrient deficiencies downregulate hepatic ghr-i, decreasing the ghr-i/ghr-ii ratio. The same trend, due to a ghr-ii increase, is found in skeletal muscle, whereas impaired growth during overwintering is related to increase in the ghr-i/ghr-ii and igf-ii/igf-i ratios in liver and skeletal muscle, respectively. Overall, expression of insulin receptors and igf receptors is less regulated, though the expression quotient is especially high in the liver and muscle of sea bream. Nutritional and environmental regulation of the full Igf binding protein 1-6 repertoire remains to be understood. However, tissue-specific expression profiling highlights an enhanced and nutritionally regulated expression of the igfbp-1/-2/-4 clade in liver, whereas the igfbp-3/-5/-6 clade is overexpressed and regulated in skeletal muscle. The somatotropic axis is, therefore, highly informative of a wide-range of growth-disturbing and stressful stimuli, and multivariate analysis supports its use as a reliable toolset for the assessment of growth potentiality and nutrient deficiencies and requirements, especially in combination with selected panels of other nutritionally regulated metabolic biomarkers.
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10
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Mohammed-Geba K, González AA, Suárez RA, Galal-Khallaf A, Martos-Sitcha JA, Ibrahim HM, Martínez-Rodríguez G, Mancera JM. Molecular performance of Prl and Gh/Igf1 axis in the Mediterranean meager, Argyrosomus regius, acclimated to different rearing salinities. FISH PHYSIOLOGY AND BIOCHEMISTRY 2017; 43:203-216. [PMID: 27573345 DOI: 10.1007/s10695-016-0280-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 08/22/2016] [Indexed: 06/06/2023]
Abstract
Aquaculture industry in the Mediterranean region exhibits a growing interest for the Mediterranean meager Argyrosomus regius. Some preliminary works showed a good growth performance of the species in nearly isosmotic salinities. However, the patterns of alteration of prolactin (Prl) as well as growth hormone (Gh)/insulin growth factor-1 (Igf1) axis at the molecular level are not yet described in this species. Therefore, we cloned and sequenced partial cDNAs for pituitary prolactin (prl) and growth hormone (gh), hepatic insulin-like growth factor (igf1), and β-actin (actb). Expression patterns of these transcripts were tested in juveniles of A. regius acclimated to four different environmental salinities: (1) 5 ‰ (hyposmotic); (2) 12 ‰ (isosmotic); (3) 38 ‰ (hyperosmotic; seawater control); and (4) 55 ‰ (extremely hyperosmotic). All investigated transcripts shared high sequence identities with their counterparts in other perciformes. prl mRNA levels showed inverse pattern with increasing salinities. gh mRNA enhanced significantly in both 12 and 55 ‰ salinity groups in comparison with the control group, while igf1 showed its maximum expression levels under the nearly isosmotic environment. The results indicated clear sensitivity of prl, gh and igf1 to changes in environmental salinity, which can possibly control the euryhalinity capacity of this species.
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Affiliation(s)
- Khaled Mohammed-Geba
- Genetic Engineering and Molecular Biology Division, Department of Zoology, Faculty of Science, Menoufia University, Shebin El-Kom, Menoufia, Egypt.
- Instituto de Ciencias Marinas de Andalucía, Consejo Superior de Investigaciones Científicas (ICMAN-CSIC), 11519, Puerto Real, Cádiz, Spain.
- Department of Biology, Faculty of Marine and Environmental Sciences, Campus de Excelencia Internacional del Mar (CEI-MAR), University of Cadiz, 11519, Puerto Real, Cadiz, Spain.
| | - Antonio Astola González
- Department of Biomedicine, Biotechnology, and Public Health, Faculty of Sciences, Campus de Excelencia Internacional del Mar (CEI-MAR), University of Cadiz, 11519, Puerto Real, Cádiz, Spain
| | - Rubén Ayala Suárez
- Department of Biomedicine, Biotechnology, and Public Health, Faculty of Sciences, Campus de Excelencia Internacional del Mar (CEI-MAR), University of Cadiz, 11519, Puerto Real, Cádiz, Spain
| | - Asmaa Galal-Khallaf
- Genetic Engineering and Molecular Biology Division, Department of Zoology, Faculty of Science, Menoufia University, Shebin El-Kom, Menoufia, Egypt
- Instituto de Ciencias Marinas de Andalucía, Consejo Superior de Investigaciones Científicas (ICMAN-CSIC), 11519, Puerto Real, Cádiz, Spain
- Department of Biology, Faculty of Marine and Environmental Sciences, Campus de Excelencia Internacional del Mar (CEI-MAR), University of Cadiz, 11519, Puerto Real, Cadiz, Spain
| | - Juan Antonio Martos-Sitcha
- Instituto de Ciencias Marinas de Andalucía, Consejo Superior de Investigaciones Científicas (ICMAN-CSIC), 11519, Puerto Real, Cádiz, Spain
| | - Hany Mohammed Ibrahim
- Immunology and Parasitology Division, Department of Zoology, Faculty of Science, Menoufia University, Shebin El-Kom, Menoufia, Egypt
| | - Gonzalo Martínez-Rodríguez
- Instituto de Ciencias Marinas de Andalucía, Consejo Superior de Investigaciones Científicas (ICMAN-CSIC), 11519, Puerto Real, Cádiz, Spain
| | - Juan Miguel Mancera
- Department of Biology, Faculty of Marine and Environmental Sciences, Campus de Excelencia Internacional del Mar (CEI-MAR), University of Cadiz, 11519, Puerto Real, Cadiz, Spain
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11
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Azizi S, Nematollahi MA, Mojazi Amiri B, Vélez EJ, Salmerón C, Chan SJ, Navarro I, Capilla E, Gutiérrez J. IGF-I and IGF-II effects on local IGF system and signaling pathways in gilthead sea bream (Sparus aurata) cultured myocytes. Gen Comp Endocrinol 2016; 232:7-16. [PMID: 26602376 DOI: 10.1016/j.ygcen.2015.11.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 11/13/2015] [Accepted: 11/17/2015] [Indexed: 12/22/2022]
Abstract
The insulin-like growth factors (IGFs) have a fundamental role in a vast range of functions acting through a tyrosine-kinase receptor (IGF-IR). IGFs in muscle can affect the expression of components of the local IGF system, myogenic regulatory factors (MRFs), proliferating (proliferating cell nuclear antigen, PCNA) or differentiating molecules (myosin heavy chain, MHC) and, lead to the activation of different signaling pathways. The response of all these genes to IGFs incubation at two different times in day 4 cultured myocytes of gilthead sea bream was analyzed. Both IGFs increased the expression of IGF-I and IGFBP-5, but showed different effects on the receptors, with IGF-I suppressing the expression of both isoforms (IGF-IRa and IGF-IRb) and IGF-II up-regulating only IGF-IRb. Moreover, the protein levels of PCNA and target of rapamycin (TOR) increased after IGF-II incubation, although a decline in Myf5 and a rise in MHC gene expression was caused by IGF-I. Taken together, these results provide evidence for the importance of IGFs on controlling muscle development and growth in gilthead sea bream and suggest that each IGF may be preferentially acting through a specific IGF-IR. Moreover, the data support the hypothesis that IGF-II has a more important role during proliferation, whereas IGF-I seems to be relevant for the differentiation phase of myogenesis.
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Affiliation(s)
- Sheida Azizi
- Department of Fisheries Sciences, Faculty of Natural Resources, University of Tehran, Karaj, Iran; Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Mohammad Ali Nematollahi
- Department of Fisheries Sciences, Faculty of Natural Resources, University of Tehran, Karaj, Iran.
| | - Bagher Mojazi Amiri
- Department of Fisheries Sciences, Faculty of Natural Resources, University of Tehran, Karaj, Iran
| | - Emilio J Vélez
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Cristina Salmerón
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Shu Jin Chan
- Departments of Biochemistry, and Molecular Biology and Medicine, The Howard Hughes Medical Institute, University of Chicago, Chicago, IL 60637, USA
| | - Isabel Navarro
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Encarnación Capilla
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain
| | - Joaquim Gutiérrez
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028 Barcelona, Spain.
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12
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Annibalini G, Bielli P, De Santi M, Agostini D, Guescini M, Sisti D, Contarelli S, Brandi G, Villarini A, Stocchi V, Sette C, Barbieri E. MIR retroposon exonization promotes evolutionary variability and generates species-specific expression of IGF-1 splice variants. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2016; 1859:757-68. [DOI: 10.1016/j.bbagrm.2016.03.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 03/07/2016] [Accepted: 03/23/2016] [Indexed: 12/18/2022]
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13
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Pérez L, Ortiz-Delgado JB, Manchado M. Molecular characterization and transcriptional regulation by GH and GnRH of insulin-like growth factors I and II in white seabream (Diplodus sargus). Gene 2015; 578:251-62. [PMID: 26706220 DOI: 10.1016/j.gene.2015.12.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 11/06/2015] [Accepted: 12/14/2015] [Indexed: 01/22/2023]
Abstract
Insulin-like growth factors (IGF) I and II are key regulators of development, growth and reproduction in fish. In the present study we have cloned and characterized the cDNA and genomic sequences of IGF-I and IGF-II in the white seabream (Diplodus sargus). The igf1 and igf2 genes were encoded putatively by five and four exons, respectively. Moreover, the 5'-flanking upstream region of the igf1 gene contained highly conserved regulatory elements including HNF-1α, HNF-3β, CCAAT/enhancer binding protein (C/EBP) and the TATA box. The full-length cDNAs were 1225 and 1666 nucleotides long for igf1 and igf2, respectively. Sequence analysis identified the A-E domains as well as three spliced forms involving the E domain in exons 3-5. ORF identities were higher than 83% with respect to other fish orthologs. Expression analysis demonstrated that igf1 and its spliced forms were mostly expressed in liver, whereas the igf2 was expressed ubiquitously not detecting significant differences among the ten tissues analyzed. Hormonal treatments using the porcine GH demonstrated a sharply increase of both igf1 and igf2 mRNA levels in liver and gills at 30 min and 1h after injection. In the gonads, igf1 mRNA levels increased steadily with testis and ovary maturation. In contrast, igf2 transcript amounts were higher in immature stages (S1-S2). Hormonal treatments using GH and GnRH demonstrated that igf1 and igf2 expression were upregulated in the gonads. Overall, these data demonstrate that IGF-I and IGF-II are locally expressed in several tissues and regulated by key hormones of the somatotropic and gonadotropic axes.
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Affiliation(s)
- Laura Pérez
- IFAPA Centro El Toruño, Junta de Andalucía, Camino Tiro Pichón s/n, 11500 El Puerto de Santa María, Cádiz, Spain
| | - Juan Bosco Ortiz-Delgado
- Institute of Marine Science of Andalusia (ICMAN). CSIC, Av Republica Saharaui, 2, 11510 Puerto Real, Cádiz, Spain
| | - Manuel Manchado
- IFAPA Centro El Toruño, Junta de Andalucía, Camino Tiro Pichón s/n, 11500 El Puerto de Santa María, Cádiz, Spain.
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14
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Vélez EJ, Lutfi E, Azizi S, Montserrat N, Riera-Codina M, Capilla E, Navarro I, Gutiérrez J. Contribution of in vitro myocytes studies to understanding fish muscle physiology. Comp Biochem Physiol B Biochem Mol Biol 2015; 199:67-73. [PMID: 26688542 DOI: 10.1016/j.cbpb.2015.12.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 12/04/2015] [Accepted: 12/06/2015] [Indexed: 11/25/2022]
Abstract
Research on the regulation of fish muscle physiology and growth was addressed originally by classical in vivo approaches; however, systemic interactions resulted in many questions that could be better considered through in vitro myocyte studies. The first paper published by our group in this field was with Tom Moon on brown trout cardiomyocytes, where the insulin and IGF-I receptors were characterized and the down-regulatory effects of an excess of peptides demonstrated. We followed the research on cultured skeletal muscle cells through the collaboration with INRA focused on the characterization of IGF-I receptors and its signaling pathways through in vitro development. Later on, we showed the important metabolic role of IGFs, although these studies were only the first stage of a prolific area of work that has offered a useful tool to advance in our knowledge of the endocrine and nutritional regulation of fish growth and metabolism. Obviously, the findings obtained in vitro serve the purpose to propose the scenario that will need confirmation in vivo, but this technique has made possible many different, easy, fast and better controlled studies. In this review, we have summarized the main advances that the use of cultured muscle cells has permitted, focusing mainly in the role of IGFs regulating fish metabolism and growth. Although many articles have already appeared using this model system in salmonids, gilthead sea bream or zebrafish, it is reasonable to expect new studies with cultured cells using innovative approaches that will help to understand fish physiology and its regulation.
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Affiliation(s)
- Emilio J Vélez
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028, Barcelona, Spain
| | - Esmail Lutfi
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028, Barcelona, Spain
| | - Sheida Azizi
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028, Barcelona, Spain
| | - Núria Montserrat
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028, Barcelona, Spain
| | - Miquel Riera-Codina
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028, Barcelona, Spain
| | - Encarnación Capilla
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028, Barcelona, Spain
| | - Isabel Navarro
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028, Barcelona, Spain
| | - Joaquim Gutiérrez
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, 08028, Barcelona, Spain.
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15
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Vélez EJ, Azizi S, Millán-Cubillo A, Fernández-Borràs J, Blasco J, Chan SJ, Calduch-Giner JA, Pérez-Sánchez J, Navarro I, Capilla E, Gutiérrez J. Effects of sustained exercise on GH-IGFs axis in gilthead sea bream (Sparus aurata). Am J Physiol Regul Integr Comp Physiol 2015; 310:R313-22. [PMID: 26661095 DOI: 10.1152/ajpregu.00230.2015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 12/08/2015] [Indexed: 11/22/2022]
Abstract
The endocrine system regulates growth mainly through the growth hormone (GH)/insulin-like growth factors (IGFs) axis and, although exercise promotes growth, little is known about its modulation of these factors. The aim of this work was to characterize the effects of 5 wk of moderate sustained swimming on the GH-IGFs axis in gilthead sea bream fingerlings. Plasma IGF-I/GH ratio and tissue gene expression of total IGF-I and three splice variants, IGF-II, three IGF binding proteins, two GH receptors, two IGF-I receptors, and the downstream molecules were analyzed. Fish under exercise (EX) grew more than control fish (CT), had a higher plasma IGF-I/GH ratio, and showed increased hepatic IGF-I expression (mainly IGF-Ia). Total IGF-I expression levels were similar in the anterior and caudal muscles; however, IGF-Ic expression increased with exercise, suggesting that this splice variant may be the most sensitive to mechanical action. Moreover, IGFBP-5b and IGF-II increased in the anterior and caudal muscles, respectively, supporting enhanced muscle growth. Furthermore, in EX fish, hepatic IGF-IRb was reduced together with both GHRs; GHR-II was also reduced in anterior muscle, while GHR-I showed higher expression in the two muscle regions, indicating tissue-dependent differences and responses to exercise. Exercise also increased gene and protein expression of target of rapamycin (TOR), suggesting enhanced muscle protein synthesis. Altogether, these data demonstrate that moderate sustained activity may be used to increase the plasma IGF-I/GH ratio and to potentiate growth in farmed gilthead sea bream, modulating the gene expression of different members of the GH-IGFs axis (i.e., IGF-Ic, IGF-II, IGFBP-5b, GHR-I, and TOR).
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Affiliation(s)
- Emilio J Vélez
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain
| | - Sheida Azizi
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain; Department of Fisheries Sciences, Faculty of Natural Resources, University of Tehran, Karaj, Iran
| | - Antonio Millán-Cubillo
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain
| | - Jaume Fernández-Borràs
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain
| | - Josefina Blasco
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain
| | - Shu Jin Chan
- Departments of Biochemistry, and Molecular Biology and Medicine, The Howard Hughes Medical Institute, University of Chicago, Chicago, Illinois; and
| | - Josep A Calduch-Giner
- Nutrition and Fish Growth Endocrinology, Institute of Aquaculture Torre de la Sal, Consejo Superior de Investigaciones Científicas, Castellón, Spain
| | - Jaume Pérez-Sánchez
- Nutrition and Fish Growth Endocrinology, Institute of Aquaculture Torre de la Sal, Consejo Superior de Investigaciones Científicas, Castellón, Spain
| | - Isabel Navarro
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain
| | - Encarnación Capilla
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain
| | - Joaquim Gutiérrez
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain;
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16
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Georgiou S, Alami-Durante H, Power DM, Sarropoulou E, Mamuris Z, Moutou KA. Transient up- and down-regulation of expression of myosin light chain 2 and myostatin mRNA mark the changes from stratified hyperplasia to muscle fiber hypertrophy in larvae of gilthead sea bream (Sparus aurata L.). Cell Tissue Res 2015; 363:541-54. [PMID: 26246399 DOI: 10.1007/s00441-015-2254-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 07/06/2015] [Indexed: 01/17/2023]
Abstract
Hyperplasia and hypertrophy are the two mechanisms by which muscle develops and grows. We study these two mechanisms, during the early development of white muscle in Sparus aurata, by means of histology and the expression of structural and regulatory genes. A clear stage of stratified hyperplasia was identified early in the development of gilthead sea bream but ceased by 35 dph when hypertrophy took over. Mosaic recruitment of new white fibers began as soon as 60 dph. The genes mlc2a and mlc2b were expressed at various levels during the main phases of hyperplasia and hypertrophy. The genes myog and mlc2a were significantly up-regulated during the intensive stratified formation of new fibers and their expression was significantly correlated. Expression of mstn1 and igf1 increased at 35 dph, appeared to regulate the hyperplasia-to-hypertrophy transition, and may have stimulated the expression of mlc2a, mlc2b and col1a1 at the onset of mosaic hyperplasia. The up-regulation of mstn1 at transitional phases in muscle development indicates a dual regulatory role of myostatin in fish larval muscle growth.
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Affiliation(s)
- Stella Georgiou
- Department of Biochemistry & Biotechnology, University of Thessaly, Ploutonos 26, Larissa, Greece
| | - Hélène Alami-Durante
- UR 1067 Nutrition Métabolisme Aquaculture, INRA, Aquapôle, F-64310, Saint-Pée-sur-Nivelle, France
| | - Deborah M Power
- Centre of Marine Sciences (CCMar), Universidade do Algarve, Faro, Portugal
| | - Elena Sarropoulou
- Institute of Marine Biology & Genetics, Hellenic Centre for Marine Research, Heraklion, Crete, Greece
| | - Zissis Mamuris
- Department of Biochemistry & Biotechnology, University of Thessaly, Ploutonos 26, Larissa, Greece
| | - Katerina A Moutou
- Department of Biochemistry & Biotechnology, University of Thessaly, Ploutonos 26, Larissa, Greece.
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Acclimation to different environmental salinities induces molecular endocrine changes in the GH/IGF-I axis of juvenile gilthead sea bream (Sparus aurata L.). J Comp Physiol B 2014; 185:87-101. [PMID: 25395251 DOI: 10.1007/s00360-014-0871-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2014] [Revised: 10/15/2014] [Accepted: 10/26/2014] [Indexed: 02/03/2023]
Abstract
To assess the role of the GH/IGF-I axis in osmotic acclimation of the gilthead seabream Sparus aurata, juvenile specimens were acclimated to four environmental salinities: hyposmotic (5 ‰), isosmotic (12 ‰) and hyperosmotic (40 and 55 ‰). The full-length cDNAs for both pituitary adenylate cyclase-activating peptide (PACAP) and prepro-somatostatin-I (PSS-I), the precursor for mature somatostatin-I (SS-I), were cloned. Hypothalamic PACAP and PSS-I, hypophyseal growth hormone (GH) and prolactin (PRL), and hepatic insulin-like growth factor-I (IGF-I) mRNA expression levels were analyzed in the four rearing salinities tested. PACAP and IGF-I mRNA values increased significantly in response to both 5 and 55 ‰ salinities, showing a U-shaped curve relationship with the basal level in the 40 ‰ group. Hypothalamic PSS-I expression increased strongly in the 55 ‰ environment. GH mRNA levels did not change in any of the tested environmental salinities. PRL mRNA maximum levels were encountered in the 5 and 12 ‰ environments, but significantly down-regulated in the 40 ‰. Plasma cortisol levels significantly increased in the 40 ‰ environment. These results are discussed in relation to the well-known high adaptability of Sparus aurata to different environmental salinities and the role of the GH/IGF-I axis in this process.
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18
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Jiménez-Amilburu V, Salmerón C, Codina M, Navarro I, Capilla E, Gutiérrez J. Insulin-like growth factors effects on the expression of myogenic regulatory factors in gilthead sea bream muscle cells. Gen Comp Endocrinol 2013; 188:151-8. [PMID: 23500676 DOI: 10.1016/j.ygcen.2013.02.033] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Accepted: 02/19/2013] [Indexed: 11/22/2022]
Abstract
Gilthead sea bream (Sparus aurata) is a widely cultured fish; however, muscle development regulation is poorly known. Myogenesis can be activated by the myogenic regulatory factors (MRFs: MyoD, Myf5, myogenin and MRF4) and by endocrine signals from the growth hormone (GH)/insulin-like growth factors (IGFs) axis. We cultured gilthead sea bream myocytes to better understand the role of IGFs in muscle growth and differentiation through the regulation of MRFs expression. First, we studied the expression pattern during culture development of IGFs and IGF-I splice variants. The expression of igf-II was highest at the beginning of the culture and decreased when the cells started to differentiate, similarly to that observed for total igf-I. Igf-Ib showed a paralleled expression pattern as that of total igf-I, whereas igf-Ic was more stable during culture progression. Next, we analyzed the expression of IGFs and MRFs after incubation of cells at day 4 with GH, IGF-I, IGF-II and combinations of them at 3, 6 and 18 h. IGF-II increased myod2 and myf5 expression, genes involved in early muscle cell proliferation. Moreover, IGF-I caused an increase on mrf4 and myogenin expression, both involved in the later stages of development corresponding to differentiation. Regarding the regulation of IGFs expression, igf-I was stimulated by GH and IGF-II alone and combined, whereas igf-II expression was increased in response to IGF-I, suggesting a nice model of crossed regulation. Overall, the present model could be very useful to understand the different regulatory roles of these endocrine and transcription factors on fish myogenesis.
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Affiliation(s)
- Vanesa Jiménez-Amilburu
- Departament de Fisiologia i Immunologia, Facultat de Biologia, Barcelona Knowledge Campus, Universitat de Barcelona, 08028 Barcelona, Spain
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Enes P, Pousão-Ferreira P, Salmerón C, Capilla E, Navarro I, Gutiérrez J, Oliva-Teles A. Effect of guar gum on glucose and lipid metabolism in white sea bream Diplodus sargus. FISH PHYSIOLOGY AND BIOCHEMISTRY 2013; 39:159-169. [PMID: 22763699 DOI: 10.1007/s10695-012-9687-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2012] [Accepted: 06/23/2012] [Indexed: 06/01/2023]
Abstract
The aim of this study was to assess the role of soluble non-starch polysaccharide (guar gum) on white sea bream Diplodus sargus, glucose and lipid metabolism. A control diet was formulated to contain 40 % crude protein, 14 % crude lipids and 35 % pregelatinized maize starch, and three other diets were formulated similar to the control diet except for guar gum, which was included at 4 % (diet GG4), 8 % (diet GG8) or 12 % (diet GG12). Diets were fed to the fish for 9 weeks on a pair-feeding scheme. Guar gum had no effect on growth performance, feed efficiency, glycaemia, cholesterolaemia and plasma triacylglyceride levels. Hepatic glucokinase and pyruvate kinase activities, liver glycogen content and liver insulin-like growth factor-I gene expression were not affected by dietary guar gum, while fructose-1,6-bisphosphatase activity was lower in fish fed guar gum-supplemented diets. Hepatic glucose-6-phosphate dehydrogenase activity was higher in fish fed diets GG4 and GG8 than in the control group. Overall, data suggest that in contrast to mammals guar gum had no effect on white sea bream glucose utilization and in lowering plasma cholesterol and triacylglyceride levels. However, it seems to contribute to lower endogenous glucose production.
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Affiliation(s)
- P Enes
- CIMAR/CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal.
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20
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Sparkman AM, Schwartz TS, Madden JA, Boyken SE, Ford NB, Serb JM, Bronikowski AM. Rates of molecular evolution vary in vertebrates for insulin-like growth factor-1 (IGF-1), a pleiotropic locus that regulates life history traits. Gen Comp Endocrinol 2012; 178:164-73. [PMID: 22569170 DOI: 10.1016/j.ygcen.2012.04.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2011] [Revised: 03/24/2012] [Accepted: 04/23/2012] [Indexed: 11/20/2022]
Abstract
Insulin-like growth factor-1 (IGF-1) is a member of the vertebrate insulin/insulin-like growth factor/relaxin gene family necessary for growth, reproduction, and survival at both the cellular and organismal level. Its sequence, protein structure, and function have been characterized in mammals, birds, and fish; however, a notable gap in our current knowledge of the function of IGF-1 and its molecular evolution is information in ectothermic reptiles. To address this disparity, we sequenced the coding region of IGF-1 in 11 reptile species-one crocodilian, three turtles, three lizards, and four snakes. Complete sequencing of the full mRNA transcript of a snake revealed the Ea-isoform, the predominant isoform of IGF-1 also reported in other vertebrate groups. A gene tree of the IGF-1 protein-coding region that incorporated sequences from diverse vertebrate groups showed similarity to the species phylogeny, with the exception of the placement of Testudines as sister group to Aves, due to their high nucleotide sequence similarity. In contrast, long-branch lengths indicate more rapid divergence in IGF-1 among lizards and snakes. Additionally, lepidosaurs (i.e., lizards and snakes) had higher rates of non-synonymous:synonymous substitutions (dN/dS) relative to archosaurs (i.e., birds and crocodilians) and turtles. Tests for positive selection on specific codons within branches and evaluation of the changes in the amino acid properties, suggested positive selection in lepidosaurs on the C domain of IGF-1, which is involved in binding affinity to the IGF-1 receptor. Predicted structural changes suggest that major alterations in protein structure and function may have occurred in reptiles. These data propose new insights into the molecular co-evolution of IGF-1 and its receptors, and ultimately the evolution of IGF-1's role in regulating life-history traits across vertebrates.
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Affiliation(s)
- Amanda M Sparkman
- Department of Ecology, Evolution & Organismal Biology, Iowa State University, Ames, IA 50011, USA
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21
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Rafael MS, Laizé V, Bensimon-Brito A, Leite RB, Schüle R, Cancela ML. Four-and-a-half LIM domains protein 2 (FHL2) is associated with the development of craniofacial musculature in the teleost fish Sparus aurata. Cell Mol Life Sci 2012; 69:423-34. [PMID: 21739231 PMCID: PMC11115147 DOI: 10.1007/s00018-011-0754-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2010] [Revised: 06/08/2011] [Accepted: 06/14/2011] [Indexed: 01/08/2023]
Abstract
Four-and-a-half LIM domains protein 2 (FHL2) is involved in major cellular mechanisms such as regulation of gene transcription and cytoskeleton modulation, participating in physiological control of cardiogenesis and osteogenesis. Knowledge on underlying mechanisms is, however, limited. We present here new data on FHL2 protein and its role during vertebrate development using a marine teleost fish, the gilthead seabream (Sparus aurata L.). In silico comparison of vertebrate protein sequences and prediction of LIM domain three-dimensional structure revealed a high degree of conservation, suggesting a conserved function throughout evolution. Determination of sites and levels of FHL2 gene expression in seabream indicated a central role for FHL2 in the development of heart and craniofacial musculature, and a potential role in tissue calcification. Our data confirmed the key role of FHL2 protein during vertebrate development and gave new insights into its particular involvement in craniofacial muscle development and specificity for slow fibers.
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Affiliation(s)
- Marta S. Rafael
- Centre of Marine Sciences (CCMAR), University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Vincent Laizé
- Centre of Marine Sciences (CCMAR), University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Anabela Bensimon-Brito
- Centre of Marine Sciences (CCMAR), University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Ricardo B. Leite
- Centre of Marine Sciences (CCMAR), University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Roland Schüle
- Department of Urology/Women’s Hospital and Center for Clinical Research, University of Freiburg Medical Center, Breisacherstrasse 66, 79106 Freiburg, Germany
| | - M. Leonor Cancela
- Centre of Marine Sciences (CCMAR), University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
- Department of Biomedical Sciences and Medicine (DCBM), University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
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García-Fernández C, Sánchez JA, Blanco G. Characterization of the gilthead seabream (Sparus aurata L.) transferrin gene: genomic structure, constitutive expression and SNP variation. FISH & SHELLFISH IMMUNOLOGY 2011; 31:548-556. [PMID: 21782954 DOI: 10.1016/j.fsi.2011.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2011] [Revised: 07/01/2011] [Accepted: 07/02/2011] [Indexed: 05/31/2023]
Abstract
Transferrin (Tf) is a multi-function protein with a central role in iron metabolism, and it is this function that is associated with a role in the innate immune system response. The clear link between Tf and immune defense mechanism lead to propose Tf as a candidate gene for disease resistance. In this study, genomic and cDNA sequences of Tf gene in gilthead seabream (Sparus aurata L.) (SaTf gene), were identified and characterized. SaTf gene structure consists of a coding region of 2076 nucleotides divided into 17 exons and a no-coding region that includes 16 introns and spans 5495 nucleotides. The deduced Tf protein for gilthead seabream is composed of 691 amino acids and consists of an initial peptide and two lobes (N- and C-lobes). This gene structure is similar to that of previously described Tf genes in other fish species. RT-PCR analyses carried out in different tissues and two developmental stages showed tissue-and stage-specific Tf expression in gilthead seabream. Finally, by sequencing the transferrin genomic sequences of 20 unrelated seabreams, 31 SNPs were identified. These data allowed the estimation of the frequency of nucleotide substitution in the SaTf gene as 1SNP per 253 bp. SNPs were detected in different regions of the genomic sequence but they were mainly localized in non-coding regions, specifically, SNP frequency in non-coding regions was fifteen-fold higher than within coding regions.
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Affiliation(s)
- Carmen García-Fernández
- Laboratorio de Genética Acuícola, Departamento de Biología Funcional, Universidad de Oviedo, IUBA, 33071 Oviedo, Spain
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Lynn SG, Wallat GK, Malison JA, Shepherd BS. Developmental expression and estrogen responses of endocrine genes in juvenile yellow perch (Perca flavescens). Gen Comp Endocrinol 2011; 171:151-9. [PMID: 21216244 DOI: 10.1016/j.ygcen.2011.01.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2009] [Revised: 11/24/2010] [Accepted: 01/03/2011] [Indexed: 12/13/2022]
Abstract
The present study examines the expression of growth-regulating genes (gh, prl, smtl and igf1b), the estrogen receptors (esr1 and esr2a) and aromatase (cyp19a1a) in developing yellow perch. To gain an initial understanding into the endocrine control of growth preceding and involved with sexual size dimorphism (SSD), where females have been reported to grow faster and larger than males, young of the year fish were sampled for length, weight and tissues at several time points (102-421 days post-hatch (dph)). Positive growth was seen in both sexes over the sampling interval, but SSD was not manifested. Using real-time quantitative PCR, we found that pituitary growth hormone (gh) and liver insulin-like growth factor-1b (igf1b) mRNA levels were significantly affected by dph and levels were found to be correlated with growth in both sexes. Liver cyp19a1a, esr1 and esr2a mRNA levels were significantly influenced by dph, whereas there was a significant dph*sex interaction on liver esr2a mRNA levels with males having higher levels than females at 379 and 421 dph. Ovarian cyp19a1a decreased with dph, but there were no changes in esr1 or esr2a mRNA levels. Dietary treatment of juvenile (∼300 dph) females with 20 mg/kg diet 17β-estradiol resulted in significantly higher liver esr1 mRNA levels and a sustained hepatosomatic index (I(H)). Across all data sets liver esr2a mRNA levels showed the most significant positive correlation with liver igf1b mRNA levels. These findings show that growth is accompanied by increases in pituitary gh, liver igf1b and liver esr1 and esr2a mRNAs in juvenile yellow perch.
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Affiliation(s)
- Scott G Lynn
- Department of Biology, University of Kentucky, Lexington, KY 40506, USA.
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Fernández I, Darias M, Andree KB, Mazurais D, Zambonino-Infante JL, Gisbert E. Coordinated gene expression during gilthead sea bream skeletogenesis and its disruption by nutritional hypervitaminosis A. BMC DEVELOPMENTAL BIOLOGY 2011; 11:7. [PMID: 21306609 PMCID: PMC3045981 DOI: 10.1186/1471-213x-11-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2010] [Accepted: 02/09/2011] [Indexed: 11/10/2022]
Abstract
BACKGROUND Vitamin A (VA) has a key role in vertebrate morphogenesis, determining body patterning and growth through the control of cell proliferation and differentiation processes. VA regulates primary molecular pathways of those processes by the binding of its active metabolite (retinoic acid) to two types of specific nuclear receptors: retinoic acid receptors (RARs) and retinoid X receptors (RXRs), which promote transcription of downstream target genes. This process is well known in most of higher vertebrates; however, scarce information is available regarding fishes. Therefore, in order to gain further knowledge of fish larval development and its disruption by nutritional VA imbalance, the relative expression of some RARs and RXRs, as well as several genes involved in morpho- and skeletogenesis such as peroxisome proliferator-activated receptors (PPARA, PPARB and PPARG); retinol-binding protein (RBP); insulin-like growth factors I and II (IGF1 and IGF2, respectively); bone morphogenetic protein 2 (Bmp2); transforming growth factor β-1 (TGFB1); and genes encoding different extracellular matrix (ECM) proteins such as matrix Gla protein (mgp), osteocalcin (bglap), osteopontin (SPP1), secreted protein acidic and rich in cysteine (SPARC) and type I collagen α1 chain (COL1A1) have been studied in gilthead sea bream. RESULTS During gilthead sea bream larval development, specific expression profiles for each gene were tightly regulated during fish morphogenesis and correlated with specific morphogenetic events and tissue development. Dietary hypervitaminosis A during early larval development disrupted the normal gene expression profile for genes involved in RA signalling (RARA), VA homeostasis (RBP) and several genes encoding ECM proteins that are linked to skeletogenesis, such as bglap and mgp. CONCLUSIONS Present data reflects the specific gene expression patterns of several genes involved in larval fish RA signalling and skeletogenesis; and how specific gene disruption induced by a nutritional VA imbalance underlie the skeletal deformities. Our results are of basic interest for fish VA signalling and point out some of the potential molecular players involved in fish skeletogenesis. Increased incidences of skeletal deformities in gilthead sea bream fed with hypervitaminosis A were the likely ultimate consequence of specific gene expression disruption at critical development stages.
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Affiliation(s)
- Ignacio Fernández
- Unitat de Cultius Experimentals, IRTA Centre de Sant Carles de la Ràpita (IRTA-SCR), Crta, del Poble Nou s/n, 43540 - Sant Carles de la Ràpita (Spain)
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Castillo-Briceño P, Cabas I, Arizcun M, Meseguer J, Mulero V, García-Ayala A. Identification of a β1 integrin isoform with restricted tissue expression in a teleost fish. Reprod Fertil Dev 2011; 23:654-64. [DOI: 10.1071/rd10351] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2010] [Accepted: 01/12/2011] [Indexed: 11/23/2022] Open
Abstract
The composition and organisation of extracellular matrix (ECM)-related molecules change during development. These components interact with different cell surface receptors to modulate the transduction of signals for cell growth, differentiation, migration, proliferation and apoptosis. Previous findings in the teleost fish gilthead seabream (Sparus aurata L., Teleostei), a marine protandrous hermaphrodite fish, showed that endocrine and immune stimuli are able to modulate the expression of ECM-related molecules, as well as specific correlations between them. In the present study, quantitative reverse transcription–polymerase chain reaction was used to examine the gene expression profile of β1 integrin isoform b (ITGB1b) and its possible role in reproductive physiology, especially in relation to spermatogenesis. Expression profiles were analysed in the context of the reproductive cycle (RC) and in relation with other ECM-related molecules, including matrix metalloproteinase (MMP)-2, MMP-9, MMP-13, tissue-specific inhibitor of metalloproteinase (TIMP)-2a, TIMP-2b, collagen (COL1A1) and ITGB1a. Expression of ITGB1b was found in the testis and brain and, to some extent, in endothelial cells. In contrast, ITGB1a was expressed ubiquitously. In the testis, the ITGB1b expression peaked during spermatogenesis, whereas the expression of the other ECM-related molecules is induced mainly during the post-spawning stage, both stages of marked tissue remodelling during the first and second RC in males. In addition, in fish exposed to the endocrine disruptor 17α-ethynyloestradiol (at 5 and 50 μg g–1 food during 7, 14 and 21 days), ITGB1b expression in the testis was inhibited in a dose- and time-dependent manner and was related to reduced serum levels of testosterone. Together, these results suggest a different functionality for the two ITGB1 isoforms in the gilthead seabream, where ITGB1b is more specifically involved in reproduction. This is the first report of an ITGB1 gene isoform whose expression is restricted to endocrine-related tissues in vertebrates.
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Faulk CK, Pérez-Domínguez R, Webb KA, Holt GJ. The novel finding of four distinct prepro-IGF-I E domains in a perciform fish, Sciaenops ocellatus, during ontogeny. Gen Comp Endocrinol 2010; 169:75-81. [PMID: 20674575 DOI: 10.1016/j.ygcen.2010.07.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2010] [Revised: 07/06/2010] [Accepted: 07/22/2010] [Indexed: 11/18/2022]
Abstract
In fishes, insulin-like growth factor-I (IGF-I) stimulates growth and differentiation but also plays a role in a number of other processes including osmoregulation, metabolism, immune response and reproduction. This study presents the cDNA encoding multiple prepro-IGF-I transcripts obtained from red drum, Sciaenopsocellatus, and examines differential expression in select adult tissues and during ontogeny. Four distinct transcripts were sequenced which were identical in the coding region for the signal (132 bp) and mature (204 bp) peptides but differed in the coding region of the E peptide by the exclusion of 117 (Ea-1), 81 (Ea-2) or 36 (Ea-3) bp compared to the 222 bp present in Ea-4. Analysis of the pertinent portion of the genomic sequence of this gene suggests that the transcripts are a result of alternative splicing. This is the first report of the expression of all four known prepro-IGF-I transcripts in a teleost other than a salmonid. The deduced amino acid sequences exhibited 70-95% identity with teleosts and somewhat lower identity to other vertebrates (60-75%). Three of the 4 transcripts (Ea-2, Ea-3, Ea-4) were expressed in the liver, ovary, spleen, gall bladder, brain, red muscle, pancreas and spinal cord of adults. Only the Ea-4 transcript was expressed in adult stomach tissue while no signal was detected in pituitary, retina, intestine, adipose or white muscle. In contrast, all 4 transcripts were expressed throughout ontogeny. The apparent expression of the Ea-1 transcript only during the larval stage may indicate a developmental role for this E peptide in red drum.
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Affiliation(s)
- Cynthia K Faulk
- The University of Texas at Austin, Marine Science Institute, Port Aransas, TX, United States.
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Salas-Leiton E, Anguis V, Martín-Antonio B, Crespo D, Planas JV, Infante C, Cañavate JP, Manchado M. Effects of stocking density and feed ration on growth and gene expression in the Senegalese sole (Solea senegalensis): potential effects on the immune response. FISH & SHELLFISH IMMUNOLOGY 2010; 28:296-302. [PMID: 19909816 DOI: 10.1016/j.fsi.2009.11.006] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2009] [Revised: 10/19/2009] [Accepted: 11/03/2009] [Indexed: 05/28/2023]
Abstract
Stocking density and ration size are two major factors influencing aquaculture production. To evaluate their effects on growth and immune system in Senegalese sole (Solea senegalensis) juveniles, a 2 x 2 experimental design using two rations (1.0% and 0.25% of the total fish biomass) and two different initial stocking densities (7 and 30 kg m(-2)) was performed throughout a 60 days culture period. Soles fed 1.0% showed a higher specific growth rate (SGR) than those fed 0.25% (3.3-fold). No differences in SGR at 60 days were found between densities in spite of reduced values were detected at high density after 20 days (soles fed 0.25%) and 40 days (soles fed 1%) suggesting a compensatory growth. Physiologically, plasma cortisol levels were elevated in soles at high density (45-fold higher than at 7 kg m(-2)) whereas no differences associated to the feeding ration were observed. To assess the effects at a molecular level, the mRNA levels of genes involved in cellular stress (heat shock proteins HSP70 and HSP90), growth (insulin-like growth factors IGF-I, the spliced variants IGF-Ia and IGFI-b, and IGF-II) and innate immune system (g-type lysozyme and hepcidin (HAMP1)) were quantified. No differences in HSP90 expression were detected between densities or rations. In contrast, IGF-I, IGF-Ia and IGF-II showed reduced transcript levels in liver and HSP70 in liver and kidney at high density. Finally, g-type lysozyme and HAMP1 expression was greatly affected by both factors exhibiting an important reduction in the transcript levels at high density and low ration. Overall, our results show that S. senegalensis juveniles might exhibit satisfactory SGR at high density although the high plasma cortisol levels indicate a crowding stress that could negatively affect the expression levels of some of the genes studied.
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Affiliation(s)
- Emilio Salas-Leiton
- IFAPA Centro El Toruño, Consejería de Agricultura y Pesca, Junta de Andalucía. Apartado 16, 11500 El Puerto de Santa María, Cádiz, Spain
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