1
|
Zheng J, Zhang W, Xu Y, Cui A, Jiang Y, Wang B. Insulin-like growth factor binding protein-3 (igfbp-3) and igfbp-5 in yellowtail kingfish (Seriola lalandi): molecular characterization and expression levels under different nutritional status and stocking density. FISH PHYSIOLOGY AND BIOCHEMISTRY 2024:10.1007/s10695-024-01359-w. [PMID: 38758504 DOI: 10.1007/s10695-024-01359-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Accepted: 05/09/2024] [Indexed: 05/18/2024]
Abstract
Insulin-like growth factor-binding proteins (IGFBPs) play important roles in regulating growth and development by binding to IGF, where IGFBP-3 and IGFBP-5 are the main binding carriers of IGF in the circulation system. In the present study, the gene sequences of igfbp-3, igfbp-5a, and igfbp-5b were cloned from the liver of yellowtail kingfish (Seriola lalandi). The ORF sequences of igfbp-3, igfbp-5a, and igfbp-5b were 888, 801, and 804 bp in length, which encoded 295, 266, and 267 amino acids, respectively. The above three genes were widely expressed in yellowtail kingfish tissues, with igfbp-3 being the most highly expressed in the heart, brain, and gonads, while igfbp-5a and igfbp-5b were both most highly expressed in the liver and kidney. The expression levels of igfbp-3, igfbp-5a, and igfbp-5b were detected throughout the embryonic and larval stages, suggesting their roles in early development and growth regulation of yellowtail kingfish. Besides, igfbp-3 and igfbp-5a were significantly up-regulated in the liver under food deprivation and high-density rearing conditions, which was exactly opposite to the growth performance of yellowtail kingfish, implying that they may serve as biomarkers of adverse culture conditions. Overall, the above results initially identified the molecular characteristics of igfbp-3/-5a/-5b in yellowtail kingfish and implied that they might play important roles in the growth and development, providing a basis for further research on underlying regulatory mechanisms.
Collapse
Affiliation(s)
- Jichang Zheng
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, China
| | - Wenjing Zhang
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, China
| | - Yongjiang Xu
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, China.
| | - Aijun Cui
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, China
| | - Yan Jiang
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, China
| | - Bin Wang
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071, China
| |
Collapse
|
2
|
Mandal AK, Leask MP, Sumpter NA, Choi HK, Merriman TR, Mount DB. Genetic and Physiological Effects of Insulin-Like Growth Factor-1 (IGF-1) on Human Urate Homeostasis. J Am Soc Nephrol 2023; 34:451-466. [PMID: 36735516 PMCID: PMC10103387 DOI: 10.1681/asn.0000000000000054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 10/25/2022] [Indexed: 01/22/2023] Open
Abstract
SIGNIFICANCE STATEMENT Hyperinsulinemia induces hyperuricemia by activating net renal urate reabsorption in the renal proximal tubule. The basolateral reabsorptive urate transporter GLUT9a appears to be the dominant target for insulin. By contrast, IGF-1 infusion reduces serum urate (SU), through mechanisms unknown. Genetic variants of IGF1R associated with reduced SU have increased IGF-1R expression and interact with genes encoding the GLUT9 and ABCG2 urate transporters, in a sex-specific fashion, which controls the SU level. Activation of IGF-1/IGF-1R signaling in Xenopus oocytes modestly activates GLUT9a and inhibits insulin's stimulatory effect on the transporter, which also activates multiple secretory urate transporters-ABCG2, ABCC4, OAT1, and OAT3. The results collectively suggest that IGF-1 reduces SU by activating secretory urate transporters and inhibiting insulin's action on GLUT9a. BACKGROUND Metabolic syndrome and hyperinsulinemia are associated with hyperuricemia. Insulin infusion in healthy volunteers elevates serum urate (SU) by activating net urate reabsorption in the renal proximal tubule, whereas IGF-1 infusion reduces SU by mechanisms unknown. Variation within the IGF1R gene also affects SU levels. METHODS Colocalization analyses of a SU genome-wide association studies signal at IGF1R and expression quantitative trait loci signals in cis using COLOC2, RT-PCR, Western blotting, and urate transport assays in transfected HEK 293T cells and in Xenopus laevis oocytes. RESULTS Genetic association at IGF1R with SU is stronger in women and is mediated by control of IGF1R expression. Inheritance of the urate-lowering homozygous genotype at the SLC2A9 locus is associated with a differential effect of IGF1R genotype between men and women. IGF-1, through IGF-1R, stimulated urate uptake in human renal proximal tubule epithelial cells and transfected HEK 293T cells, through activation of IRS1, PI3/Akt, MEK/ERK, and p38 MAPK; urate uptake was inhibited in the presence of uricosuric drugs, specific inhibitors of protein tyrosine kinase, PI3 kinase (PI3K), ERK, and p38 MAPK. In X. laevis oocytes expressing ten individual urate transporters, IGF-1 through endogenous IGF-1R stimulated urate transport mediated by GLUT9, OAT1, OAT3, ABCG2, and ABCC4 and inhibited insulin's stimulatory action on GLUT9a and OAT3. IGF-1 significantly activated Akt and ERK. Specific inhibitors of PI3K, ERK, and PKC significantly affected IGF-1 stimulation of urate transport in oocytes. CONCLUSIONS The combined results of infusion, genetics, and transport experiments suggest that IGF-1 reduces SU by activating urate secretory transporters and inhibiting insulin's action.
Collapse
Affiliation(s)
- Asim K. Mandal
- Renal Division, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Megan P. Leask
- Biochemistry Department, University of Otago, Dunedin, South Island, New Zealand
- Division of Rheumatology and Clinical Immunology, University of Alabama, Birmingham, Alabama
| | - Nicholas A. Sumpter
- Division of Rheumatology and Clinical Immunology, University of Alabama, Birmingham, Alabama
| | - Hyon K. Choi
- Division of Rheumatology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - Tony R. Merriman
- Biochemistry Department, University of Otago, Dunedin, South Island, New Zealand
- Division of Rheumatology and Clinical Immunology, University of Alabama, Birmingham, Alabama
| | - David B. Mount
- Renal Division, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
- Renal Division, VA Boston Healthcare System, Harvard Medical School, Boston, Massachusetts
| |
Collapse
|
3
|
Schwarzer M, Gautam UK, Makki K, Lambert A, Brabec T, Joly A, Šrůtková D, Poinsot P, Novotná T, Geoffroy S, Courtin P, Hermanová PP, Matos RC, Landry JJM, Gérard C, Bulteau AL, Hudcovic T, Kozáková H, Filipp D, Chapot-Chartier MP, Šinkora M, Peretti N, Boneca IG, Chamaillard M, Vidal H, De Vadder F, Leulier F. Microbe-mediated intestinal NOD2 stimulation improves linear growth of undernourished infant mice. Science 2023; 379:826-833. [PMID: 36821686 DOI: 10.1126/science.ade9767] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 01/04/2023] [Indexed: 02/25/2023]
Abstract
The intestinal microbiota is known to influence postnatal growth. We previously found that a strain of Lactiplantibacillus plantarum (strain LpWJL) buffers the adverse effects of chronic undernutrition on the growth of juvenile germ-free mice. Here, we report that LpWJL sustains the postnatal growth of malnourished conventional animals and supports both insulin-like growth factor-1 (IGF-1) and insulin production and activity. We have identified cell walls isolated from LpWJL, as well as muramyl dipeptide and mifamurtide, as sufficient cues to stimulate animal growth despite undernutrition. Further, we found that NOD2 is necessary in intestinal epithelial cells for LpWJL-mediated IGF-1 production and for postnatal growth promotion in malnourished conventional animals. These findings indicate that, coupled with renutrition, bacteria cell walls or purified NOD2 ligands have the potential to alleviate stunting.
Collapse
Affiliation(s)
- Martin Schwarzer
- Laboratory of Gnotobiology, Institute of Microbiology of the Czech Academy of Sciences, 54922 Novy Hradek, Czech Republic
- Institut de Génomique Fonctionnelle de Lyon, Ecole Normale Supérieure de Lyon, CNRS UMR5242, UCBL Lyon-1, F-69007 Lyon, France
| | - Umesh Kumar Gautam
- Laboratory of Gnotobiology, Institute of Microbiology of the Czech Academy of Sciences, 54922 Novy Hradek, Czech Republic
| | - Kassem Makki
- Institut de Génomique Fonctionnelle de Lyon, Ecole Normale Supérieure de Lyon, CNRS UMR5242, UCBL Lyon-1, F-69007 Lyon, France
- CarMeN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon 1, 69310 Pierre-Bénite, France
| | - Anne Lambert
- Institut de Génomique Fonctionnelle de Lyon, Ecole Normale Supérieure de Lyon, CNRS UMR5242, UCBL Lyon-1, F-69007 Lyon, France
| | - Tomáš Brabec
- Laboratory of Immunobiology, Institute of Molecular Genetics of the Czech Academy of Sciences, 14220 Prague, Czech Republic
| | - Amélie Joly
- Institut de Génomique Fonctionnelle de Lyon, Ecole Normale Supérieure de Lyon, CNRS UMR5242, UCBL Lyon-1, F-69007 Lyon, France
| | - Dagmar Šrůtková
- Laboratory of Gnotobiology, Institute of Microbiology of the Czech Academy of Sciences, 54922 Novy Hradek, Czech Republic
| | - Pierre Poinsot
- Institut de Génomique Fonctionnelle de Lyon, Ecole Normale Supérieure de Lyon, CNRS UMR5242, UCBL Lyon-1, F-69007 Lyon, France
- CarMeN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon 1, 69310 Pierre-Bénite, France
- Univ Lyon, Hospices Civil de Lyon, Gastro-enterology and Pediatric Nutrition, Hôpital Femme Mere Enfant, F-69500 Bron, France
| | - Tereza Novotná
- Laboratory of Gnotobiology, Institute of Microbiology of the Czech Academy of Sciences, 54922 Novy Hradek, Czech Republic
| | - Stéphanie Geoffroy
- Institut de Génomique Fonctionnelle de Lyon, Ecole Normale Supérieure de Lyon, CNRS UMR5242, UCBL Lyon-1, F-69007 Lyon, France
| | - Pascal Courtin
- Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, 78350 Jouy-en-Josas, France
| | - Petra Petr Hermanová
- Laboratory of Gnotobiology, Institute of Microbiology of the Czech Academy of Sciences, 54922 Novy Hradek, Czech Republic
| | - Renata C Matos
- Institut de Génomique Fonctionnelle de Lyon, Ecole Normale Supérieure de Lyon, CNRS UMR5242, UCBL Lyon-1, F-69007 Lyon, France
| | - Jonathan J M Landry
- Genomics Core Facility, European Molecular Biology Laboratory, 69117 Heidelberg, Germany
| | - Céline Gérard
- CarMeN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon 1, 69310 Pierre-Bénite, France
| | - Anne-Laure Bulteau
- Institut de Génomique Fonctionnelle de Lyon, Ecole Normale Supérieure de Lyon, CNRS UMR5242, UCBL Lyon-1, F-69007 Lyon, France
| | - Tomáš Hudcovic
- Laboratory of Gnotobiology, Institute of Microbiology of the Czech Academy of Sciences, 54922 Novy Hradek, Czech Republic
| | - Hana Kozáková
- Laboratory of Gnotobiology, Institute of Microbiology of the Czech Academy of Sciences, 54922 Novy Hradek, Czech Republic
| | - Dominik Filipp
- Laboratory of Immunobiology, Institute of Molecular Genetics of the Czech Academy of Sciences, 14220 Prague, Czech Republic
| | | | - Marek Šinkora
- Laboratory of Gnotobiology, Institute of Microbiology of the Czech Academy of Sciences, 54922 Novy Hradek, Czech Republic
| | - Noël Peretti
- CarMeN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon 1, 69310 Pierre-Bénite, France
- Univ Lyon, Hospices Civil de Lyon, Gastro-enterology and Pediatric Nutrition, Hôpital Femme Mere Enfant, F-69500 Bron, France
| | - Ivo Gomperts Boneca
- Institut Pasteur, Université Paris Cité, CNRS UMR6047, INSERM U1306, Biology and Genetics of the Bacterial Cell Wall Unit, F-75015 Paris, France
| | | | - Hubert Vidal
- CarMeN Laboratory, INSERM, INRAE, Université Claude Bernard Lyon 1, 69310 Pierre-Bénite, France
| | - Filipe De Vadder
- Institut de Génomique Fonctionnelle de Lyon, Ecole Normale Supérieure de Lyon, CNRS UMR5242, UCBL Lyon-1, F-69007 Lyon, France
| | - François Leulier
- Institut de Génomique Fonctionnelle de Lyon, Ecole Normale Supérieure de Lyon, CNRS UMR5242, UCBL Lyon-1, F-69007 Lyon, France
| |
Collapse
|
4
|
Exploring the physiological roles of circular RNAs in livestock animals. Res Vet Sci 2022; 152:726-735. [PMID: 36270182 DOI: 10.1016/j.rvsc.2022.09.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 09/25/2022] [Accepted: 09/30/2022] [Indexed: 11/05/2022]
|
5
|
Lee JT, Rochell SJ, Kriseldi R, Kim WK, Mitchell RD. Functional properties of amino acids: improve health status and sustainability. Poult Sci 2022; 102:102288. [PMID: 36436367 PMCID: PMC9700297 DOI: 10.1016/j.psj.2022.102288] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 10/13/2022] [Accepted: 10/19/2022] [Indexed: 11/23/2022] Open
Abstract
The combination of increased genetic potential and changes in management strategies (i.e., antibiotic-free, no antibiotics ever, and every day feeding of replacement pullets) influences the nutritional needs of poultry. Traditionally, nutritionists have focused on meeting the amino acid needs for production performance and yield however, increasing specific amino acid concentrations can benefit gastrointestinal development and integrity, enhance immune response potential, influence behavior, and benefit sustainability. Commercialization of additional feed grade amino acids beyond methionine, lysine, and threonine, enables targeted increases to achieve these benefits. As such, this paper addresses the functional roles of amino acids in meeting poultry production, health, and sustainability goals.
Collapse
Affiliation(s)
- Jason T. Lee
- CJ Bio America, Downer Grove, IL, USA,Corresponding author:
| | | | | | | | | |
Collapse
|
6
|
Jouffe C, Weger BD, Martin E, Atger F, Weger M, Gobet C, Ramnath D, Charpagne A, Morin-Rivron D, Powell EE, Sweet MJ, Masoodi M, Uhlenhaut NH, Gachon F. Disruption of the circadian clock component BMAL1 elicits an endocrine adaption impacting on insulin sensitivity and liver disease. Proc Natl Acad Sci U S A 2022; 119:e2200083119. [PMID: 35238641 PMCID: PMC8916004 DOI: 10.1073/pnas.2200083119] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 01/25/2022] [Indexed: 02/06/2023] Open
Abstract
SignificanceWhile increasing evidence associates the disruption of circadian rhythms with pathologic conditions, including obesity, type 2 diabetes, and nonalcoholic fatty liver diseases (NAFLD), the involved mechanisms are still poorly described. Here, we show that, in both humans and mice, the pathogenesis of NAFLD is associated with the disruption of the circadian clock combined with perturbations of the growth hormone and sex hormone pathways. However, while this condition protects mice from the development of fibrosis and insulin resistance, it correlates with increased fibrosis in humans. This suggests that the perturbation of the circadian clock and its associated disruption of the growth hormone and sex hormone pathways are critical for the pathogenesis of metabolic and liver diseases.
Collapse
Affiliation(s)
- Céline Jouffe
- Nestlé Research, Société des Produits Nestlé, CH-1015 Lausanne, Switzerland
- Department of Pharmacology and Toxicology, University of Lausanne, CH-1011 Lausanne, Switzerland
- Helmholtz Diabetes Center, Helmholtz Zentrum München, DE-85764 Neuherberg, Germany
| | - Benjamin D. Weger
- Nestlé Research, Société des Produits Nestlé, CH-1015 Lausanne, Switzerland
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia QLD 4072, Australia
| | - Eva Martin
- Nestlé Research, Société des Produits Nestlé, CH-1015 Lausanne, Switzerland
| | - Florian Atger
- Nestlé Research, Société des Produits Nestlé, CH-1015 Lausanne, Switzerland
- Department of Pharmacology and Toxicology, University of Lausanne, CH-1011 Lausanne, Switzerland
| | - Meltem Weger
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia QLD 4072, Australia
| | - Cédric Gobet
- Nestlé Research, Société des Produits Nestlé, CH-1015 Lausanne, Switzerland
- School of Life Sciences, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Divya Ramnath
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia QLD 4072, Australia
| | - Aline Charpagne
- Nestlé Research, Société des Produits Nestlé, CH-1015 Lausanne, Switzerland
| | | | - Elizabeth E. Powell
- Department of Gastroenterology and Hepatology, Princess Alexandra Hospital, Brisbane QLD 4102, Australia
- Faculty of Medicine, Center for Liver Disease Research, Translational Research Institute, The University of Queensland, Brisbane QLD 4102, Australia
| | - Matthew J. Sweet
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia QLD 4072, Australia
| | - Mojgan Masoodi
- Nestlé Research, Société des Produits Nestlé, CH-1015 Lausanne, Switzerland
- Institute of Clinical Chemistry, Bern University Hospital, Bern 3010, Switzerland
| | - N. Henriette Uhlenhaut
- Helmholtz Diabetes Center, Helmholtz Zentrum München, DE-85764 Neuherberg, Germany
- Metabolic Programming, Technical University of Munich School of Life Sciences, DE-85354 Freising, Germany
| | - Frédéric Gachon
- Nestlé Research, Société des Produits Nestlé, CH-1015 Lausanne, Switzerland
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia QLD 4072, Australia
- School of Life Sciences, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| |
Collapse
|
7
|
Brown DD, Dauber A. Growth Hormone and Insulin-Like Growth Factor Dysregulation in Pediatric Chronic Kidney Disease. Horm Res Paediatr 2022; 94:105-114. [PMID: 34256372 DOI: 10.1159/000516558] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 04/15/2021] [Indexed: 11/19/2022] Open
Abstract
Poor growth is a common finding in children with chronic kidney disease (CKD) that has been associated with poor long-term outcomes. The etiology of poor growth in this population is multifactorial and includes dysregulation of the growth hormone (GH) and insulin-like growth factor (IGF) axis. In this review, we describe the data on GH resistance or insensitivity and inappropriate levels or reduced bioactivity of IGF proposed as contributing factors of growth impairment in children with CKD. Additionally, we describe the theorized negative effect of metabolic acidosis, another frequent finding in pediatric CKD, on the GH/IGF axis and growth. Last, we present the current and potential therapies for the treatment of short stature in pediatric CKD that target the GH/IGF hormonal axis.
Collapse
Affiliation(s)
- Denver D Brown
- Division of Nephrology, Children's National Hospital, Washington, District of Columbia, USA.,Department of Pediatrics, The George Washington University School of Medicine and Health Sciences, Washington, District of Columbia, USA
| | - Andrew Dauber
- Department of Pediatrics, The George Washington University School of Medicine and Health Sciences, Washington, District of Columbia, USA.,Division of Endocrinology, Children's National Hospital, Washington, District of Columbia, USA
| |
Collapse
|
8
|
Díaz del Moral S, Benaouicha M, Muñoz-Chápuli R, Carmona R. The Insulin-like Growth Factor Signalling Pathway in Cardiac Development and Regeneration. Int J Mol Sci 2021; 23:ijms23010234. [PMID: 35008660 PMCID: PMC8745665 DOI: 10.3390/ijms23010234] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 12/24/2021] [Accepted: 12/24/2021] [Indexed: 12/18/2022] Open
Abstract
Insulin and Insulin-like growth factors (IGFs) perform key roles during embryonic development, regulating processes of cell proliferation and survival. The IGF signalling pathway comprises two IGFs (IGF1, IGF2), two IGF receptors (IGFR1, IGFR2), and six IGF binding proteins (IGFBPs) that regulate IGF transport and availability. The IGF signalling pathway is essential for cardiac development. IGF2 is the primary mitogen inducing ventricular cardiomyocyte proliferation and morphogenesis of the compact myocardial wall. Conditional deletion of the Igf1r and the insulin receptor (Insr) genes in the myocardium results in decreased cardiomyocyte proliferation and ventricular wall hypoplasia. The significance of the IGF signalling pathway during embryonic development has led to consider it as a candidate for adult cardiac repair and regeneration. In fact, paracrine IGF2 plays a key role in the transient regenerative ability of the newborn mouse heart. We aimed to review the current knowledge about the role played by the IGF signalling pathway during cardiac development and also the clinical potential of recapitulating this developmental axis in regeneration of the adult heart.
Collapse
Affiliation(s)
- Sandra Díaz del Moral
- Institute of Biomedical Research of Málaga (IBIMA), Department of Animal Biology, Andalusian Center for Nanomedicine and Biotechnology (BIONAND), Faculty of Science, University of Málaga, 29071 Malaga, Spain; (S.D.d.M.); (M.B.); (R.M.-C.)
| | - Maha Benaouicha
- Institute of Biomedical Research of Málaga (IBIMA), Department of Animal Biology, Andalusian Center for Nanomedicine and Biotechnology (BIONAND), Faculty of Science, University of Málaga, 29071 Malaga, Spain; (S.D.d.M.); (M.B.); (R.M.-C.)
| | - Ramón Muñoz-Chápuli
- Institute of Biomedical Research of Málaga (IBIMA), Department of Animal Biology, Andalusian Center for Nanomedicine and Biotechnology (BIONAND), Faculty of Science, University of Málaga, 29071 Malaga, Spain; (S.D.d.M.); (M.B.); (R.M.-C.)
| | - Rita Carmona
- Institute of Biomedical Research of Málaga (IBIMA), Department of Animal Biology, Andalusian Center for Nanomedicine and Biotechnology (BIONAND), Faculty of Science, University of Málaga, 29071 Malaga, Spain; (S.D.d.M.); (M.B.); (R.M.-C.)
- Department of Human Anatomy and Embryology, Legal Medicine and History of Medicine, Faculty of Medicine, University of Málaga, 29071 Malaga, Spain
- Correspondence:
| |
Collapse
|
9
|
Sanford CD, Owen MPT, McCarty K, Canal LB, Schulmeister TM, Oosthuizen N, Fontes PLP, Lemley CO, Bromfield JJ, DiLorenzo N, Lamb GC. Effects of Administering Exogenous Bovine Somatotropin During the First Trimester of Pregnancy Altered Uterine Hemodynamics in Suckled Beef Cows. FRONTIERS IN ANIMAL SCIENCE 2021. [DOI: 10.3389/fanim.2021.744790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The objective of this study was to examine the effects of recombinant bovine somatotropin (bST) administration on uterine hemodynamics and subsequent fetal programming in suckled cows during the first trimester of gestation. Crossbred beef cows (n = 152) were stratified by breed, days postpartum, parity, cyclicity status, and body condition score (BCS) before being assigned to either receive injections of bST every other week (BST; 500-mg/14 d) starting at fixed-time artificial insemination (TAI; d 0) until d 97 or to receive no bST (CTL). Blood samples were collected until d 97 for analysis of plasma concentrations of insulin-like growth factor 1 (IGF-1). Pregnancy was assessed via transrectal ultrasonography on d 41 and 173. A subset of pregnant cows (BST, n = 24; CTL, n = 28) were selected for assessment of uterine arterial blood flow (BF), pulsatility index, and resistance index (RI) of the uterine arteries ipsilateral and contralateral to the conceptus via color Doppler ultrasonography on d 97 and 233 of gestation. No differences (P = 0.99) were detected in body weight (BW) or BCS of dams; however, plasma concentrations of IGF-1 were greater (P < 0.001) in BST-treated cows. Color Doppler ultrasonography parameters differed whereby a treatment × day interaction (P = 0.007) was detected for RI on d 97 (P = 0.048); however, on d 233, RI did not differ (P > 0.10) but ipsilateral BF for BST-treated cows was greater (P = 0.0319) than controls. Mean heart girth diameter, crown-to-rump length, and neonate BW at 7 ± 5 d of calf age did not differ (P > 0.10). Liver tissue samples from each calf were collected for analysis of mRNA expression of target insulin-like growth factor system ligands. There was no difference in gene expression of hepatic IGF-1 between treatments (P = 0.99). A treatment × sex interaction was determined, where BST heifers had increased mRNA expression of IGFR1 compared to BST bulls (P = 0.03). Bi-weekly administration of bST until d 97 of pregnancy increased plasma concentrations of IGF-1, altered uterine hemodynamics in dams, induced sex-specific changes in liver gene expression of the offspring but failed to alter calf morphometries or calf performance until weaning.
Collapse
|
10
|
You W, Li M, Qi Y, Wang Y, Chen Y, Liu Y, Li L, Ouyang H, Pang D. CRISPR/Cas9-Mediated Specific Integration of Fat-1 and IGF-1 at the p Rosa26 Locus. Genes (Basel) 2021; 12:genes12071027. [PMID: 34356043 PMCID: PMC8305104 DOI: 10.3390/genes12071027] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 06/28/2021] [Accepted: 06/28/2021] [Indexed: 01/24/2023] Open
Abstract
Many researchers have focused on knock-in pigs for site-specific integration, but little attention has been given to genetically modified pigs with the targeted integration of multiple recombinant genes. To establish a multigene targeted knock-in editing system, we used the internal ribosome entry site (IRES) and self-cleaving 2A peptide technology to construct a plasmid coexpressing the fatty acid desaturase (Fat-1) and porcine insulin-like growth factor-1 (IGF-1) genes at equal levels. In this study, pigs were genetically modified with multiple genes that were precisely inserted into the pRosa26 locus by using the clustered regularly spaced short palindrome repeat sequence (CRISPR)/CRISPR-related 9 (Cas9) system and somatic cell nuclear transfer technology (SCNT) in combination. Single copies of the Fat-1 and IGF-1 genes were expressed satisfactorily in various tissues of F0-generation pigs. Importantly, gas chromatography analysis revealed a significantly increased n-3 polyunsaturated fatty acid (PUFA) level in these genetically modified pigs, which led to a significant decrease of the n-6 PUFA/n-3 PUFA ratio from 6.982 to 3.122 (*** p < 0.001). In conclusion, the establishment of an editing system for targeted double-gene knock-in in this study provides a reference for the precise integration of multiple foreign genes and lays a foundation for the development of new transgenic pig breeds with multiple excellent phenotypes.
Collapse
Affiliation(s)
- Wenni You
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China; (W.Y.); (M.L.); (Y.Q.); (Y.W.); (Y.C.); (Y.L.); (L.L.); (H.O.)
| | - Mengjing Li
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China; (W.Y.); (M.L.); (Y.Q.); (Y.W.); (Y.C.); (Y.L.); (L.L.); (H.O.)
| | - Yilin Qi
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China; (W.Y.); (M.L.); (Y.Q.); (Y.W.); (Y.C.); (Y.L.); (L.L.); (H.O.)
| | - Yanbing Wang
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China; (W.Y.); (M.L.); (Y.Q.); (Y.W.); (Y.C.); (Y.L.); (L.L.); (H.O.)
| | - Yiwu Chen
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China; (W.Y.); (M.L.); (Y.Q.); (Y.W.); (Y.C.); (Y.L.); (L.L.); (H.O.)
| | - Ying Liu
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China; (W.Y.); (M.L.); (Y.Q.); (Y.W.); (Y.C.); (Y.L.); (L.L.); (H.O.)
| | - Li Li
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China; (W.Y.); (M.L.); (Y.Q.); (Y.W.); (Y.C.); (Y.L.); (L.L.); (H.O.)
| | - Hongsheng Ouyang
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China; (W.Y.); (M.L.); (Y.Q.); (Y.W.); (Y.C.); (Y.L.); (L.L.); (H.O.)
- Chongqing Research Institute, Jilin University, Chongqing 401123, China
| | - Daxin Pang
- Key Lab for Zoonoses Research, Ministry of Education, Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University, Changchun 130062, China; (W.Y.); (M.L.); (Y.Q.); (Y.W.); (Y.C.); (Y.L.); (L.L.); (H.O.)
- Chongqing Research Institute, Jilin University, Chongqing 401123, China
- Correspondence: ; Tel.: +86-131-9437-3800
| |
Collapse
|
11
|
Erdem C, Lee AV, Taylor DL, Lezon TR. Inhibition of RPS6K reveals context-dependent Akt activity in luminal breast cancer cells. PLoS Comput Biol 2021; 17:e1009125. [PMID: 34191793 PMCID: PMC8277016 DOI: 10.1371/journal.pcbi.1009125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 07/13/2021] [Accepted: 05/28/2021] [Indexed: 01/03/2023] Open
Abstract
Aberrant signaling through insulin (Ins) and insulin-like growth factor I (IGF1) receptors contribute to the risk and advancement of many cancer types by activating cell survival cascades. Similarities between these pathways have thus far prevented the development of pharmacological interventions that specifically target either Ins or IGF1 signaling. To identify differences in early Ins and IGF1 signaling mechanisms, we developed a dual receptor (IGF1R & InsR) computational response model. The model suggested that ribosomal protein S6 kinase (RPS6K) plays a critical role in regulating MAPK and Akt activation levels in response to Ins and IGF1 stimulation. As predicted, perturbing RPS6K kinase activity led to an increased Akt activation with Ins stimulation compared to IGF1 stimulation. Being able to discern differential downstream signaling, we can explore improved anti-IGF1R cancer therapies by eliminating the emergence of compensation mechanisms without disrupting InsR signaling.
Collapse
Affiliation(s)
- Cemal Erdem
- Department of Computational & Systems Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- University of Pittsburgh Drug Discovery Institute (UPDDI), University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Adrian V. Lee
- Department of Pharmacology & Chemical Biology, UPMC Hillman Cancer Center, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- Magee-Womens Research Institute, Pittsburgh, Pennsylvania, United States of America
- The Institute for Precision Medicine, Pittsburgh, Pennsylvania, United States of America
| | - D. Lansing Taylor
- Department of Computational & Systems Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- University of Pittsburgh Drug Discovery Institute (UPDDI), University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Timothy R. Lezon
- Department of Computational & Systems Biology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- University of Pittsburgh Drug Discovery Institute (UPDDI), University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| |
Collapse
|
12
|
Lasigliè D. Sirtuins and the prevention of immunosenescence. VITAMINS AND HORMONES 2021; 115:221-264. [PMID: 33706950 DOI: 10.1016/bs.vh.2020.12.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Aging of hematopoietic stem cells (HSCs) has been largely described as one underlying cause of senescence of the immune-hematopoietic system (immunosenescence). A set of well-defined hallmarks characterizes aged HSCs contributing to unbalanced hematopoiesis and aging-associated functional alterations of both branches of the immune system. In this chapter, the contribution of sirtuins, a family of conserved NAD+ dependent deacetylases with key roles in metabolism, genome integrity, aging and lifespan, to immunosenescence, will be addressed. In particular, the role of SIRT6 will be deeply analyzed highlighting a multifaceted part of this deacetylase in HSCs aging as well as in the immunosenescence of dendritic cells (DCs). These and other emerging data are currently paving the way for future design and development of rejuvenation means aiming at rescuing age-related changes in immune function in the elderly and combating age-associated hematopoietic diseases.
Collapse
Affiliation(s)
- Denise Lasigliè
- Istituto Comprensivo "Franco Marro", Ministero dell'Istruzione Ministero dell'Università e della Ricerca (M.I.U.R), Villar Perosa, TO, Italy.
| |
Collapse
|
13
|
Frank SJ. Classical and novel GH receptor signaling pathways. Mol Cell Endocrinol 2020; 518:110999. [PMID: 32835785 PMCID: PMC7799394 DOI: 10.1016/j.mce.2020.110999] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/12/2020] [Accepted: 08/17/2020] [Indexed: 12/16/2022]
Abstract
In this review, I summarize historical and recent features of the classical pathways activated by growth hormone (GH) through the cell surface GH receptor (GHR). GHR is a cytokine receptor superfamily member that signals by activating the non-receptor tyrosine kinase, JAK2, and members of the Src family kinases. Activation of the GHR engages STATs, PI3K, and ERK pathways, among others, and details of these now-classical pathways are presented. Modulating elements, including the SOCS proteins, phosphatases, and regulated GHR metalloproteolysis, are discussed. In addition, a novel physical and functional interaction of GHR with IGF-1R is summarized and discussed in terms of its mechanisms, consequences, and physiological and therapeutic implications.
Collapse
Affiliation(s)
- Stuart J Frank
- Department of Medicine, Division of Endocrinology, Diabetes, and Metabolism, University of Alabama at Birmingham, Birmingham, 1720 2nd Avenue South, BDB 485, AL, 35294-0012, USA; Department of Cell, Developmental, and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, 35294, USA; Endocrinology Section, Medical Service, Veterans Affairs Medical Center, Birmingham, AL, 35233, USA.
| |
Collapse
|
14
|
Rutter MM, Wong BL, Collins JJ, Sawnani H, Taylor MD, Horn PS, Backeljauw PF. Recombinant human insulin-like growth factor-1 therapy for 6 months improves growth but not motor function in boys with Duchenne muscular dystrophy. Muscle Nerve 2020; 61:623-631. [PMID: 32108355 DOI: 10.1002/mus.26846] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 01/15/2020] [Accepted: 02/24/2020] [Indexed: 11/08/2022]
Abstract
INTRODUCTION Recombinant human insulin-like growth factor-1 (rhIGF-1) is a growth factor and has anabolic effects on muscle. We investigated whether rhIGF-1 therapy: 1) improves or preserves muscle function; and 2) improves growth in boys with Duchenne muscular dystrophy (DMD). METHODS In this study we compared prepubescent, ambulatory, glucocorticoid-treated boys with DMD (n = 17) vs controls (glucocorticoid therapy only, n = 21) in a 6-month-long, prospective, randomized, controlled trial of subcutaneous rhIGF-1 therapy. The primary outcome was 6-minute walk distance (6MWD). Secondary outcomes included height velocity (HV), change in height standard deviation score (ΔHtSDS), motor function, cardiopulmonary function, body composition, insulin sensitivity, quality of life, and safety. RESULTS Change in 6MWD was similar between groups (rhIGF-1 vs controls [mean ± SD]: 3.4 ± 32.4 vs -5.1 ± 50.2 meters, P = .53). Treated subjects grew more than controls (HV: 6.5 ± 1.7 vs 3.3 ± 1.3 cm/year, P < .0001; 6-month ΔHtSDS: 0.25, P < .0001). Lean mass and insulin sensitivity increased in treated subjects. DISCUSSION In boys with DMD, 6 months of rhIGF-1 therapy did not change motor function, but it improved linear growth.
Collapse
Affiliation(s)
- Meilan M Rutter
- Division of Endocrinology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Brenda L Wong
- Department of Pediatrics and Neurology, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - James J Collins
- Mercy Clinic Pediatric Neurology, Springfield, Missouri, USA
| | - Hemant Sawnani
- Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Michael D Taylor
- The Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Paul S Horn
- Division of Pediatric Neurology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Philippe F Backeljauw
- Division of Endocrinology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| |
Collapse
|
15
|
Duan C, Allard JB. Insulin-Like Growth Factor Binding Protein-5 in Physiology and Disease. Front Endocrinol (Lausanne) 2020; 11:100. [PMID: 32194505 PMCID: PMC7063065 DOI: 10.3389/fendo.2020.00100] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 02/17/2020] [Indexed: 12/25/2022] Open
Abstract
Insulin-like growth factor (IGF) signaling is regulated by a conserved family of IGF binding proteins (IGFBPs) in vertebrates. Among the six distinct types of IGFBPs, IGFBP-5 is the most highly conserved across species and has the broadest range of biological activities. IGFBP-5 is expressed in diverse cell types, and its expression level is regulated by a variety of signaling pathways in different contexts. IGFBP-5 can exert a range of biological actions including prolonging the half-life of IGFs in the circulation, inhibition of IGF signaling by competing with the IGF-1 receptor for ligand binding, concentrating IGFs in certain cells and tissues, and potentiation of IGF signaling by delivery of IGFs to the IGF-1 receptor. IGFBP-5 also has IGF-independent activities and is even detected in the nucleus. Its broad biological activities make IGFBP-5 an excellent representative for understanding IGFBP functions. Despite its evolutionary conservation and numerous biological activities, knockout of IGFBP-5 in mice produced only a negligible phenotype. Recent research has begun to explain this paradox by demonstrating cell type-specific and physiological/pathological context-dependent roles for IGFBP-5. In this review, we survey and discuss what is currently known about IGFBP-5 in normal physiology and human disease. Based on recent in vivo genetic evidence, we suggest that IGFBP-5 is a multifunctional protein with the ability to act as a molecular switch to conditionally regulate IGF signaling.
Collapse
|
16
|
Menelaou K, Prater M, Tunster S, Blake G, Geary Joo C, Cross JC, Hamilton R, Watson E. Blastocyst transfer in mice alters the placental transcriptome and growth. Reproduction 2019; 159:115-132. [PMID: 31751309 PMCID: PMC6993209 DOI: 10.1530/rep-19-0293] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 11/18/2019] [Indexed: 12/18/2022]
Abstract
Assisted reproduction technologies (ART) are becoming increasingly common. Therefore, how these procedures influence gene regulation and feto-placental development are important to explore. Here, we assess the effects of blastocyst transfer on mouse placental growth and transcriptome. C57Bl/6 blastocysts were transferred into uteri of B6D2F1 pseudopregnant females and dissected at embryonic day 10.5 for analysis. Compared to non-transferred controls, placentas from transferred conceptuses weighed less even though the embryos were larger on average. This suggested a compensatory increase in placental efficiency. RNA-sequencing of whole male placentas revealed 543 differentially expressed genes (DEGs) after blastocyst transfer: 188 and 355 genes were down-regulated and up-regulated, respectively. DEGs were independently validated in male and female placentas. Bioinformatic analyses revealed that DEGs represented expression in all major placental cell types and included genes that are critical for placenta development and/or function. Furthermore, the direction of transcriptional change in response to blastocyst transfer implied an adaptive response to improve placental function to maintain fetal growth. Our analysis revealed that CpG methylation at regulatory regions of two DEGs was unchanged in female transferred placentas and that DEGs had fewer gene-associated CpG islands (within ~20 kb region) compared to the larger genome. These data suggested that altered methylation at proximal promoter regions might not lead to transcriptional disruption in transferred placentas. Genomic clustering of some DEGs warrants further investigation of long-range, cis-acting epigenetic mechanisms including histone modifications together with DNA methylation. We conclude that embryo transfer, a protocol required for ART, significantly impacts the placental transcriptome and growth.
Collapse
Affiliation(s)
- Katerina Menelaou
- K Menelaou, Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom of Great Britain and Northern Ireland
| | - Malwina Prater
- M Prater, Centre for Trophoblast Research, University of Cambridge, Cambridge, United Kingdom of Great Britain and Northern Ireland
| | - Simon Tunster
- S Tunster, Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom of Great Britain and Northern Ireland
| | - Georgina Blake
- G Blake, Physiology, Development and Neuroscience, University of Cambridge, Cambridge, United Kingdom of Great Britain and Northern Ireland
| | - Colleen Geary Joo
- C Geary Joo, Clara Christie Centre for Mouse Genomics, University of Calgary, Calgary, Canada
| | - James C Cross
- J Cross, Comparative Biology and Experimental Medicine, University of Calgary, Calgary, Canada
| | - Russell Hamilton
- R Hamilton, Centre for Trophoblast Research, University of Cambridge, Cambridge, United Kingdom of Great Britain and Northern Ireland
| | - Erica Watson
- E Watson, Physiology, Development and Neuroscience, University of Cambridge, Cambridge, CB2 3EG, United Kingdom of Great Britain and Northern Ireland
| |
Collapse
|
17
|
Wu JJ, Zhou YL, Wang ZW, Li GH, Jin FP, Cui LL, Gao HT, Li XP, Zhou L, Gui JF. Comparative Transcriptome Analysis Reveals Differentially Expressed Genes and Signaling Pathways Between Male and Female Red-Tail Catfish (Mystus wyckioides). MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2019; 21:463-474. [PMID: 30941640 DOI: 10.1007/s10126-019-09894-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 03/04/2019] [Indexed: 06/09/2023]
Abstract
Sexual dimorphism is widespread in fish species. The red-tail catfish (Mystus wyckioides) is a commercially important catfish in the lower reaches of the Lancang River and the Mekong basin, and it shows a growth advantage in males. Here, RNA-seq was for the first time used to explore the gene expression difference between the sexes in the hypothalamus and pituitary of red-tail catfish, respectively. In the hypothalamus, 5732 and 271 unigenes have significantly higher and lower expressions, respectively, in males compared with females. KEGG analysis showed that 212 DEGs were annotated to 216 signaling pathways, and enrichment analysis suggested different levels of cAMP and glutamatergic synapse signaling between male and female hypothalami and some of the DEGs appear involved in gonad development and growth. In the pituitary, we found only 19 differentially expressed unigenes, which were annotated to 32 signaling pathways, most of which play important roles in gonad development.
Collapse
Affiliation(s)
- Jun-Jie Wu
- Yunnan Institute of Fishery Sciences Research, Kunming, 650111, China
| | - Yu-Lin Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Wuhan, 430072, China
| | - Zhong-Wei Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Wuhan, 430072, China.
| | - Guang-Hua Li
- Yunnan Institute of Fishery Sciences Research, Kunming, 650111, China
| | - Fang-Peng Jin
- Yunnan Institute of Fishery Sciences Research, Kunming, 650111, China
| | - Li-Li Cui
- Yunnan Institute of Fishery Sciences Research, Kunming, 650111, China
| | - Hai-Tao Gao
- Yunnan Institute of Fishery Sciences Research, Kunming, 650111, China
| | - Xin-Ping Li
- Xishuangbanna Native Fish Research and Breeding Center, Xishuangbanna, 666100, China
| | - Li Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Wuhan, 430072, China
| | - Jian-Fang Gui
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Wuhan, 430072, China
| |
Collapse
|
18
|
Fujimoto M, Andrew M, Liao L, Zhang D, Yildirim G, Sluss P, Kalra B, Kumar A, Yakar S, Hwa V, Dauber A. Low IGF-I Bioavailability Impairs Growth and Glucose Metabolism in a Mouse Model of Human PAPPA2 p.Ala1033Val Mutation. Endocrinology 2019; 160:1363-1376. [PMID: 30977789 PMCID: PMC6507901 DOI: 10.1210/en.2018-00755] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 04/05/2019] [Indexed: 02/03/2023]
Abstract
Bioactive free IGF-I is critically important for growth. The bioavailability of IGF-I is modulated by the IGF-binding proteins (IGFBPs) and their proteases, such as pregnancy-associated plasma protein-A2 (PAPP-A2). We have created a mouse model with a specific mutation in PAPPA2 identified in a human with PAPP-A2 deficiency. The human mutation was introduced to the mouse genome via a knock-in strategy, creating knock-in mice with detectable protein levels of Papp-a2 but without protease activities. We found that the Pappa2 mutation led to significant reductions in body length (10%), body weight (10% and 20% in males and females, respectively), and relative lean mass in mice. Micro-CT analyses of Pappa2 knock-in femurs from adult mice showed inhibited periosteal bone expansion leading to more slender bones in both male and female mice. Furthermore, in the Pappa2 knock-in mice, insulin resistance correlated with decreased serum free IGF-I and increased intact IGFBP-3 concentrations. Interestingly, mice heterozygous for the knock-in mutation demonstrated a growth rate for body weight and length as well as a biochemical phenotype that was intermediate between wild-type and homozygous mice. This study models a human PAPPA2 mutation in mice. The mouse phenotype closely resembles that of the human patients, and it provides further evidence that the regulation of IGF-I bioavailability by PAPP-A2 is critical for human growth and for glucose and bone metabolism.
Collapse
Affiliation(s)
- Masanobu Fujimoto
- Division of Endocrinology, Cincinnati Center for Growth Disorders, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Melissa Andrew
- Division of Endocrinology, Cincinnati Center for Growth Disorders, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio
- Division of Endocrinology, Children’s National Medical Center, Washington, DC
| | - Lihong Liao
- Division of Endocrinology, Cincinnati Center for Growth Disorders, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio
- Department of Pediatrics, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Dongsheng Zhang
- Division of Endocrinology, Cincinnati Center for Growth Disorders, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Gozde Yildirim
- Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, New York
| | | | | | | | - Shoshana Yakar
- Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, New York
| | - Vivian Hwa
- Division of Endocrinology, Cincinnati Center for Growth Disorders, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio
- Correspondence: Andrew Dauber, MD, Children’s National Medical Center, 111 Michigan Avenue NW, WW3.5, Suite 200, Room 1215, Washington, DC 20010. E-mail: ; or Vivian Hwa, PhD, Division of Endocrinology, Cincinnati Center for Growth Disorders, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, 240 Albert Sabin Way, T5.605, Cincinnati, Ohio 45229. E-mail:
| | - Andrew Dauber
- Division of Endocrinology, Cincinnati Center for Growth Disorders, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, Cincinnati, Ohio
- Division of Endocrinology, Children’s National Medical Center, Washington, DC
- Correspondence: Andrew Dauber, MD, Children’s National Medical Center, 111 Michigan Avenue NW, WW3.5, Suite 200, Room 1215, Washington, DC 20010. E-mail: ; or Vivian Hwa, PhD, Division of Endocrinology, Cincinnati Center for Growth Disorders, Cincinnati Children’s Hospital Medical Center, University of Cincinnati College of Medicine, 240 Albert Sabin Way, T5.605, Cincinnati, Ohio 45229. E-mail:
| |
Collapse
|
19
|
Hetz JA, Menzies BR, Shaw G, Renfree MB. The tammar wallaby: a non-traditional animal model to study growth axis maturation. Reprod Fertil Dev 2019; 31:1276-1288. [PMID: 31030727 DOI: 10.1071/rd18271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Accepted: 03/26/2019] [Indexed: 11/23/2022] Open
Abstract
Maturation of the growth hormone (GH)/insulin-like growth factor 1 (IGF1) axis is a critical developmental event that becomes functional over the peripartum period in precocial eutherian mammals such as sheep. In mice and marsupials that give birth to altricial young, the GH/IGF1 axis matures well after birth, suggesting that functional maturation is associated with developmental stage, not parturition. Recent foster-forward studies in one marsupial, the tammar wallaby (Macropus eugenii), have corroborated this hypothesis. 'Fostering' tammar young not only markedly accelerates their development and growth rates, but also affects the timing of maturation of the growth axis compared with normal growing young, providing a novel non-traditional animal model for nutritional manipulation. This review discusses how nutrition affects the maturation of the growth axis in marsupials compared with traditional eutherian animal models.
Collapse
Affiliation(s)
- Jennifer A Hetz
- School of BioSciences, The University of Melbourne, Vic. 3010, Australia; and Escuela de Agronomía, Pontificia Universidad Católica de Valparaíso, Casilla 4-D, Quillota, Región de Valparaíso, Chile
| | - Brandon R Menzies
- School of BioSciences, The University of Melbourne, Vic. 3010, Australia; and Corresponding author.
| | - Geoffrey Shaw
- School of BioSciences, The University of Melbourne, Vic. 3010, Australia
| | - Marilyn B Renfree
- School of BioSciences, The University of Melbourne, Vic. 3010, Australia
| |
Collapse
|
20
|
Castro FLS, Su S, Choi H, Koo E, Kim W. L-Arginine supplementation enhances growth performance, lean muscle, and bone density but not fat in broiler chickens. Poult Sci 2019; 98:1716-1722. [DOI: 10.3382/ps/pey504] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 10/12/2018] [Indexed: 12/25/2022] Open
|
21
|
Insulin-like growth factor 1 modulates bioengineered tooth morphogenesis. Sci Rep 2019; 9:368. [PMID: 30675004 PMCID: PMC6344556 DOI: 10.1038/s41598-018-36863-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 11/21/2018] [Indexed: 11/08/2022] Open
Abstract
Regenerative therapy to replace missing teeth is a critical area of research. Functional bioengineered teeth have been produced by the organ germ method using mouse tooth germ cells. However, these bioengineered teeth are significantly smaller in size and exhibit an abnormal crown shape when compared with natural teeth. The proper sizes and shapes of teeth contribute to their normal function. Therefore, a method is needed to control the morphology of bioengineered teeth. Here, we investigated whether insulin-like growth factor 1 (IGF1) can regulate the sizes and shapes of bioengineered teeth, and assessed underlying mechanisms of such regulation. IGF1 treatment significantly increased the size of bioengineered tooth germs, while preserving normal tooth histology. IGF1-treated bioengineered teeth, which were developed from bioengineered tooth germs in subrenal capsules and jawbones, showed increased sizes and cusp numbers. IGF1 increased the number of fibroblast growth factor (Fgf4)-expressing enamel knots in bioengineered tooth germs and enhanced the proliferation and differentiation of dental epithelial and mesenchymal cells. This study is the first to reveal that IGF1 increases the sizes and cusp numbers of bioengineered teeth via the induction of enamel knot formation, as well as the proliferation and differentiation of dental epithelial and mesenchymal cells.
Collapse
|
22
|
Danilova T, Galli E, Pakarinen E, Palm E, Lindholm P, Saarma M, Lindahl M. Mesencephalic Astrocyte-Derived Neurotrophic Factor (MANF) Is Highly Expressed in Mouse Tissues With Metabolic Function. Front Endocrinol (Lausanne) 2019; 10:765. [PMID: 31781038 PMCID: PMC6851024 DOI: 10.3389/fendo.2019.00765] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 10/21/2019] [Indexed: 01/02/2023] Open
Abstract
Mesencephalic astrocyte-derived neurotrophic factor (MANF) and cerebral dopamine neurotrophic factor (CDNF) form a family of atypical growth factors discovered for their neuroprotective properties in the central nervous system (CNS) in animal models of neurodegenerative diseases. Although their mechanism of protective action still remains unclear, it has been suggested that both MANF and CDNF promote cell survival through regulating the unfolded protein response (UPR), thereby relieving endoplasmic reticulum (ER) stress. Recent studies identified MANF for its emerging roles in metabolic function, inflammation and pancreatic β-cells. We have found that MANF deletion from the pancreas and β-cells leads to postnatal depletion of β-cells and diabetes. Moreover, global MANF-deficiency in mice results in severe diabetes-independent growth retardation. As the expression pattern of MANF in mouse tissues has not been extensively studied, we set out to thoroughly investigate MANF expression in embryonic and adult mice using immunohistochemistry, histochemical X-gal staining, enzyme-linked immunosorbent assay (ELISA), and quantitative reverse transcription PCR (RT-qPCR). We found that MANF is highly expressed in brain neurons regulating energy homeostasis and appetite, as well as in hypothalamic nuclei producing hormones and neuropeptides important for different body functions. Strong expression of MANF was also observed in peripheral mouse tissues and cells with high secretory and metabolic function. These include pituitary gland and interestingly we found that the anterior pituitary gland is smaller in MANF-deficient mice compared to wild-type mice. Consequently, we found reduction in the number of growth hormone- and prolactin-producing cells. This combined with increased expression of UPR genes, reduced number of proliferating cells in the anterior pituitary and dysregulated expression of pituitary hormones might contribute to the severe growth defect seen in the MANF knockout mice. Moreover, in this study we compared MANF and CDNF levels in mouse tissues. Unlike MANF, CDNF protein levels are generally lower in mouse tissues, and the highest levels of CDNF was observed in the tissues with high-energy demands and oxidative roles, including heart, muscle, testis, and brown adipose tissue.
Collapse
|
23
|
Li R, Hong P, Lan H, Zheng X. Growth Hormone Did Not Activate Its Intracellular Signaling Molecules in Rats' Liver Hepatocytes During Early Life Period. Int J Endocrinol Metab 2018; 16:e61385. [PMID: 30214460 PMCID: PMC6119208 DOI: 10.5812/ijem.61385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 04/26/2018] [Accepted: 06/02/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Although growth hormone (GH) has essential roles in the growth of animals, it has no growth-promoting effect during infancy period. The molecular mechanism underlying lack of growth-promoting effect of GH during infancy period remains unclear. Important signaling pathways are mediated by GH, including Janus kinase 2 (JAK2), extracellular signal-regulated kinase 1/2 (ERK1/2), signal transducers, and activators of transcription 5, 3, and 1 (STATs 5, 3 and 1). OBJECTIVES This study explored the underlying molecular mechanisms driving to the lack of growth-promoting effect of GH in the early stage of life by in vivo assessment of intracellular signal response (STAT5/ 3/ 1, JAK2 and ERK1/ 2) to GH at different physiological stages. METHODS In this study, five age groups of rats (1-, 4-day-old, and 1-, 2-, 3-week-old) were selected. The rats were anesthetized using pentobarbital (100 mg/kg) and then received the rat GH (2mg/kg) via inferior vena cava injection. The control rats were injected with normal saline during the same period. The intracellular signal response to GH was assessed by Western blot analysis. RESULTS JAK2 and STAT5 were expressed in 1-day and 4-day-old newborn rats and their expression levels were comparable with the levels of the 1-, 2-, and 3-week-old rats; however, JAK2/STAT5 phosphorylation was not observed in 1-day-old and 4-day-old newborn rats after stimulation with GH in the liver. Similar to JAK2 and STAT5, we did not detect STAT3/1 activation during infancy stages although basic STAT3 and STAT1 were also expressed in hepatocytes from newborn rats. In addition we detected ERK1/2 activation in 4-day-old, 1-, 2-, and 3-week-old rats but not in 1-day-old rats. CONCLUSIONS JAK2, STAT5, STAT3, STAT1, and ERK1/2 were not simultaneously activated by GH in newborn rats; this finding may be one of the underlying mechanism of GH insensitivity in newborn rats.
Collapse
Affiliation(s)
- Ruonan Li
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Pan Hong
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Hainan Lan
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Corresponding author: Hainan Lan, College of Animal Science and Technology, Jilin Agricultural University, Changchun, China. Tel: +86-043184517235, Fax: +86-431-84533462, E-mail: ; Xin Zheng, College of Animal Science and Technology, Jilin Agricultural University, Changchun, China. Tel: +86-043184517235, Fax: +86-431-84533462, E-mail:
| | - Xin Zheng
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Corresponding author: Hainan Lan, College of Animal Science and Technology, Jilin Agricultural University, Changchun, China. Tel: +86-043184517235, Fax: +86-431-84533462, E-mail: ; Xin Zheng, College of Animal Science and Technology, Jilin Agricultural University, Changchun, China. Tel: +86-043184517235, Fax: +86-431-84533462, E-mail:
| |
Collapse
|
24
|
Moreno-Carranza B, Bravo-Manríquez M, Baez A, Ledesma-Colunga MG, Ruiz-Herrera X, Reyes-Ortega P, de los Ríos EA, Macotela Y, Martínez de la Escalera G, Clapp C. Prolactin regulates liver growth during postnatal development in mice. Am J Physiol Regul Integr Comp Physiol 2018; 314:R902-R908. [DOI: 10.1152/ajpregu.00003.2018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The liver grows during the early postnatal period first at slower and then at faster rates than the body to achieve the adult liver-to-body weight ratio (LBW), a constant reflecting liver health. The hormone prolactin (PRL) stimulates adult liver growth and regeneration, and its levels are high in the circulation of newborn infants, but whether PRL plays a role in neonatal liver growth is unknown. Here, we show that the liver produces PRL and upregulates the PRL receptor in mice during the first 2 wk after birth, when liver growth lags behind body growth. At postnatal week 4, the production of PRL by the liver ceases coinciding with the elevation of circulating PRL and the faster liver growth that catches up with body growth. PRL receptor null mice ( Prlr−/−) show a significant decrease in the LBW at 1, 4, 6, and 10 postnatal weeks and reduced liver expression of proliferation [cyclin D1 ( Ccnd1)] and angiogenesis [platelet/endothelial cell adhesion molecule 1 ( Pecam1)] markers relative to Prlr+/+ mice. However, the LBW increases in Prlr−/− mice at postnatal week 2 concurring with the enhanced liver expression of Igf-1 and the liver upregulation and downregulation of suppressor of cytokine signaling 2 ( Socs2) and Socs3, respectively. These findings indicate that PRL acts locally and systemically to restrict and stimulate postnatal liver growth. PRL inhibits liver and body growth by attenuating growth hormone-induced Igf-1 liver expression via Socs2 and Socs3-related mechanisms.
Collapse
Affiliation(s)
- Bibiana Moreno-Carranza
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Querétaro City, Querétaro, México
| | - Marco Bravo-Manríquez
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Querétaro City, Querétaro, México
| | - Arelí Baez
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Querétaro City, Querétaro, México
| | - Maria G. Ledesma-Colunga
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Querétaro City, Querétaro, México
| | - Xarubet Ruiz-Herrera
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Querétaro City, Querétaro, México
| | - Pamela Reyes-Ortega
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Querétaro City, Querétaro, México
| | - Ericka A. de los Ríos
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Querétaro City, Querétaro, México
| | - Yazmín Macotela
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Querétaro City, Querétaro, México
| | | | - Carmen Clapp
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Querétaro City, Querétaro, México
| |
Collapse
|
25
|
Dehkhoda F, Lee CMM, Medina J, Brooks AJ. The Growth Hormone Receptor: Mechanism of Receptor Activation, Cell Signaling, and Physiological Aspects. Front Endocrinol (Lausanne) 2018; 9:35. [PMID: 29487568 PMCID: PMC5816795 DOI: 10.3389/fendo.2018.00035] [Citation(s) in RCA: 158] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 01/29/2018] [Indexed: 01/02/2023] Open
Abstract
The growth hormone receptor (GHR), although most well known for regulating growth, has many other important biological functions including regulating metabolism and controlling physiological processes related to the hepatobiliary, cardiovascular, renal, gastrointestinal, and reproductive systems. In addition, growth hormone signaling is an important regulator of aging and plays a significant role in cancer development. Growth hormone activates the Janus kinase (JAK)-signal transducer and activator of transcription (STAT) signaling pathway, and recent studies have provided a new understanding of the mechanism of JAK2 activation by growth hormone binding to its receptor. JAK2 activation is required for growth hormone-mediated activation of STAT1, STAT3, and STAT5, and the negative regulation of JAK-STAT signaling comprises an important step in the control of this signaling pathway. The GHR also activates the Src family kinase signaling pathway independent of JAK2. This review covers the molecular mechanisms of GHR activation and signal transduction as well as the physiological consequences of growth hormone signaling.
Collapse
Affiliation(s)
- Farhad Dehkhoda
- The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Christine M. M. Lee
- The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Johan Medina
- The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Andrew J. Brooks
- The University of Queensland Diamantina Institute, Translational Research Institute, The University of Queensland, Brisbane, QLD, Australia
| |
Collapse
|
26
|
Allard JB, Duan C. IGF-Binding Proteins: Why Do They Exist and Why Are There So Many? Front Endocrinol (Lausanne) 2018; 9:117. [PMID: 29686648 PMCID: PMC5900387 DOI: 10.3389/fendo.2018.00117] [Citation(s) in RCA: 277] [Impact Index Per Article: 46.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 03/08/2018] [Indexed: 12/11/2022] Open
Abstract
Insulin-like growth factors (IGFs) are key growth-promoting peptides that act as both endocrine hormones and autocrine/paracrine growth factors. In the bloodstream and in local tissues, most IGF molecules are bound by one of the members of the IGF-binding protein (IGFBP) family, of which six distinct types exist. These proteins bind to IGF with an equal or greater affinity than the IGF1 receptor and are thus in a key position to regulate IGF signaling globally and locally. Binding to an IGFBP increases the half-life of IGF in the circulation and blocks its potential binding to the insulin receptor. In addition to these classical roles, IGFBPs have been shown to modulate IGF signaling locally under various conditions. Although members of the IGFBP family share significant sequence homology, they each have unique structural features and play distinct roles. These IGFBP genes also have different modes of regulation and distinct expression patterns. Some IGFBPs have been found to bind to their own receptors or to translocate into the interior compartments of cells where they may execute IGF-independent actions. In spite of this functional and regulatory diversity, it has been puzzling that loss-of-function studies have yielded relatively little information about the physiological functions of IGFBPs. In this review, we suggest that evolution has tended to retain an array of IGFBPs in order to facilitate fine-tuning of IGF signaling. We explore the emerging explanation that many IGFBP functions have evolved to allow the targeted adjustment of IGF signaling under stressful or irregular conditions, which would likely not be revealed in a standard laboratory setting.
Collapse
|
27
|
Effect of human milk formula with bovine colostrum supplementation on bone mineral density in infant cynomolgus macaques. J Dev Orig Health Dis 2017; 9:172-181. [PMID: 29039296 DOI: 10.1017/s2040174417000812] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Insulin-like growth factor 1 (IGF1) is a regulator of human growth during infancy and childhood, known to promote bone and muscle growth as well as lipid accumulation. This study aimed to investigate the effects of formula milk with or without IGF1 supplementation (in the form of pure IGF1 or bovine colostrum) on growth and body composition in infant cynomolgus macaques during the first 6 months of life. Three groups of infants were nursery-reared and received formula milk with or without IGF1 or bovine colostrum supplementation for 4 months, and a fourth group consisting of breast-fed infants was included for comparison (n=6 for each group). Ranked-based analysis of covariance was used to detect differences between adjusted means for sex. No differences in weight, height, fat mass, and fat-free mass could be detected between groups. However, bone mineral density (BMD) was significantly different between groups at the end of formula feeding. Infants that received bovine colostrum supplementation displayed higher mean BMD than infants of all other groups, with no differences between the latter three groups. In conclusion, our results suggest that supplementation with bovine colostrum can enhance BMD in formula-fed infants, an effect that apparently does not depend on IGF1. Bovine colostrum supplementation could be beneficial for long-term bone health in infants with suboptimal bone growth.
Collapse
|
28
|
Cirillo F, Lazzeroni P, Sartori C, Street ME. Inflammatory Diseases and Growth: Effects on the GH-IGF Axis and on Growth Plate. Int J Mol Sci 2017; 18:E1878. [PMID: 28858208 PMCID: PMC5618527 DOI: 10.3390/ijms18091878] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 08/23/2017] [Accepted: 08/29/2017] [Indexed: 02/08/2023] Open
Abstract
This review briefly describes the most common chronic inflammatory diseases in childhood, such as cystic fibrosis (CF), inflammatory bowel diseases (IBDs), juvenile idiopathic arthritis (JIA), and intrauterine growth restriction (IUGR) that can be considered, as such, for the changes reported in the placenta and cord blood of these subjects. Changes in growth hormone (GH) secretion, GH resistance, and changes in the insulin-like growth factor (IGF) system are described mainly in relationship with the increase in nuclear factor-κB (NF-κB) and pro-inflammatory cytokines. Changes in the growth plate are also reported as well as a potential role for microRNAs (miRNAs) and thus epigenetic changes in chronic inflammation. Many mechanisms leading to growth failure are currently known; however, it is clear that further research in the field is still warranted.
Collapse
Affiliation(s)
- Francesca Cirillo
- Division of Paediatric Endocrinology and Diabetology, Department of Obstetrics, Gynaecology and Paediatrics, Azienda AUSL-IRCCS, Viale Risorgimento, 80, 42123 Reggio Emilia, Italy.
| | - Pietro Lazzeroni
- Division of Paediatric Endocrinology and Diabetology, Department of Obstetrics, Gynaecology and Paediatrics, Azienda AUSL-IRCCS, Viale Risorgimento, 80, 42123 Reggio Emilia, Italy.
| | - Chiara Sartori
- Division of Paediatric Endocrinology and Diabetology, Department of Obstetrics, Gynaecology and Paediatrics, Azienda AUSL-IRCCS, Viale Risorgimento, 80, 42123 Reggio Emilia, Italy.
| | - Maria Elisabeth Street
- Division of Paediatric Endocrinology and Diabetology, Department of Obstetrics, Gynaecology and Paediatrics, Azienda AUSL-IRCCS, Viale Risorgimento, 80, 42123 Reggio Emilia, Italy.
| |
Collapse
|
29
|
Liu Z, Han T, Fishman S, Butler J, Zimmermann T, Tremblay F, Harbison C, Agrawal N, Kopchick JJ, Schaffler MB, Yakar S. Ablation of Hepatic Production of the Acid-Labile Subunit in Bovine-GH Transgenic Mice: Effects on Organ and Skeletal Growth. Endocrinology 2017; 158:2556-2571. [PMID: 28475811 PMCID: PMC5551555 DOI: 10.1210/en.2016-1952] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 04/28/2017] [Indexed: 11/19/2022]
Abstract
Growth hormone (GH) and insulinlike growth factor 1 (IGF-1) are anabolic hormones that facilitate somatic and skeletal growth and regulate metabolism via endocrine and autocrine/paracrine mechanisms. We hypothesized that excess tissue production of GH would protect skeletal growth and integrity in states of reduction in serum IGF-1 levels. To test our hypothesis, we used bovine GH (bGH) transgenic mice as a model of GH hypersecretion and ablated the liver-derived acid-labile subunit, which stabilizes IGF-1 complexes with IGF-binding protein-3 and -5 in circulation. We used a genetic approach to create bGH/als gene knockout (ALSKO) mice and small interfering RNA (siRNA) gene-silencing approach to reduce als or igf-1 gene expression. We found that in both models, decreased IGF-1 levels in serum were associated with decreased body and skeletal size of the bGH mice. Excess GH produced more robust bones but compromised mechanical properties in male mice. Excess GH production in tissues did not protect from trabecular bone loss in response to reductions in serum IGF-1 (in bGH/ALSKO or bGH mice treated with siRNAs). Reduced serum IGF-1 levels in the bGH mice did not alleviate the hyperinsulinemia and did not resolve liver or kidney pathologies that resulted from GH hypersecretion. We concluded that reduced serum IGF-1 levels decrease somatic and skeletal growth even in states of excess GH.
Collapse
Affiliation(s)
- Zhongbo Liu
- Department of Basic Science and Craniofacial Biology, David B. Kriser Dental Center, New York University College of Dentistry, New York, New York 10010-4086
| | - Tianzhen Han
- Department of Basic Science and Craniofacial Biology, David B. Kriser Dental Center, New York University College of Dentistry, New York, New York 10010-4086
| | - Shannon Fishman
- Alnylam Pharmaceuticals, Inc., Cambridge, Massachusetts 02142
| | - James Butler
- Alnylam Pharmaceuticals, Inc., Cambridge, Massachusetts 02142
| | | | | | - Carole Harbison
- Alnylam Pharmaceuticals, Inc., Cambridge, Massachusetts 02142
| | - Nidhi Agrawal
- Department of Endocrinology, New York University School of Medicine, New York, New York 10016
| | - John J. Kopchick
- Edison Biotechnology Institute, Ohio University, Athens, Ohio 45701-2979
- Department of Biomedical Sciences, Ohio University, Athens, Ohio 45701
| | - Mitchell B. Schaffler
- Department of Biomedical Engineering, City College of New York, New York, New York 10031
| | - Shoshana Yakar
- Department of Basic Science and Craniofacial Biology, David B. Kriser Dental Center, New York University College of Dentistry, New York, New York 10010-4086
| |
Collapse
|
30
|
Piazza VG, Bartke A, Miquet JG, Sotelo AI. Analysis of Different Approaches for the Selection of Reference Genes in RT-qPCR Experiments: A Case Study in Skeletal Muscle of Growing Mice. Int J Mol Sci 2017; 18:ijms18051060. [PMID: 28509880 PMCID: PMC5454972 DOI: 10.3390/ijms18051060] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2017] [Revised: 05/09/2017] [Accepted: 05/11/2017] [Indexed: 11/18/2022] Open
Abstract
The reliability of reverse transcription-quantitative PCR (RT-qPCR) results in gene expression studies depends on the approaches used to account for non-biological variations. In order to find a proper normalization strategy for the study of genes related to growth hormone signaling in skeletal muscle of growing mice, nine unrelated genes were evaluated as internal controls. According to the most used algorithms–geNorm, the Comparative ΔCq method, NormFinder and BestKeeper–GSK3B, YWHAZ, RPL13A and RN18S were found as the most stable. However, the relative expression levels of eight of the potential reference genes assessed decreased with age in cDNA samples obtained from the same amount of total RNA. In a different approach to analyze this apparent discrepancy, experiments were performed with cDNA obtained from equal amounts of purified mRNA. Since the decline was still observed, the hypothesis of an age-related change in mRNA to total RNA ratio that could account for the systematic decrease was rejected. Differences among experimental groups could be due to a substantial increase with age in highly expressed mRNAs, which would bias the quantitation of the remaining genes. Consequently, those reference genes reflecting this dilution effect, which would have been discarded considering their variable relative expression levels, arose as suitable internal controls.
Collapse
Affiliation(s)
- Verónica G Piazza
- Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Facultad de Farmacia y Bioquímica, Buenos Aires C1113AAD, Argentina.
| | - Andrzej Bartke
- Department of Internal Medicine and Physiology, Division of Geriatric Research, School of Medicine, Southern Illinois University, Springfield, IL 62794-9628, USA.
| | - Johanna G Miquet
- Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Facultad de Farmacia y Bioquímica, Buenos Aires C1113AAD, Argentina.
| | - Ana I Sotelo
- Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Facultad de Farmacia y Bioquímica, Buenos Aires C1113AAD, Argentina.
| |
Collapse
|
31
|
Brown SM, Peters R, Lawrence AB. Up-regulation of IGF-1 in the frontal cortex of piglets exposed to an environmentally enriched arena. Physiol Behav 2017; 173:285-292. [PMID: 28238777 PMCID: PMC5358774 DOI: 10.1016/j.physbeh.2017.02.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 02/22/2017] [Accepted: 02/22/2017] [Indexed: 01/09/2023]
Abstract
Environmental enrichment (EE) is widely used in the life sciences to study effects of environment on the brain. In pigs, despite lack of EE being a key welfare issue there is little understanding of brain effects of EE in pigs. This project aimed to study the effects of exposure to an EE arena on piglet behaviours and on brain gene expression levels with a focus on IGF-1 and related genes. Eight litters of large white×landrace×Hampshire piglets were farrowed and raised in a free farrowing system (PigSAFE). At 42days of age, 6pigletsperlitter were given access to an enriched arena with plentiful peat, straw and space, (in groups of 4 made up of stable pairs) for 15min per day on 5 consecutive days to allow them to habituate to the apparatus. Piglet behaviours were recorded in the arena for 15min periods on 3 consecutive days. On the final day only one pair of test piglets per litter was given access to the arena. Brain tissue was collected within 45min of the test from piglets exposed to the arena on the day and their non-exposed littermate controls. RNA was extracted from the frontal cortex and QRT-PCR for selected genes run on a Stratgene MX3005P. In both the home pen and the EE arena litters spent the largest proportion of time engaging in foraging behaviour which was significantly increased in the enriched arena (t7=5.35, df=6, p=0.001). There were decreases in non-running play (t7=4.82, p=0.002) and inactivity (t7=4.6, p=0.002) in the arena. A significant fold change increase (FC=1.07, t=4.42, p=0.002) was observed in IGF-1 gene expression in the frontal cortex of piglets exposed to the enriched arena compared to those not exposed on the day of culling. No change in expression was observed in CSF1, the IGF-1 receptor gene nor in any of the binding proteins tested (IGFBP1-6). There was a weak tendency for increased expression of the neurotrophic factor BDNF1 (fold change: 1.03; t7=1.54, p=0.1). We believe this work is the first to explore effects of EE on pig brain physiology and development, and also points to a potential role for IGF-1 in brain effects of EE.
Collapse
Affiliation(s)
- Sarah M. Brown
- University of Edinburgh, Roslin Institute, Penicuik EH25 9RG, United Kingdom,Corresponding author.
| | - Rebecca Peters
- SRUC, West Mains Road, Edinburgh EH9 3JG, United Kingdom
| | | |
Collapse
|
32
|
McBryan J, Howlin J. Pubertal Mammary Gland Development: Elucidation of In Vivo Morphogenesis Using Murine Models. Methods Mol Biol 2017; 1501:77-114. [PMID: 27796948 DOI: 10.1007/978-1-4939-6475-8_3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
During the past 25 years, the combination of increasingly sophisticated gene targeting technology with transplantation techniques has allowed researchers to address a wide array of questions about postnatal mammary gland development. These in turn have significantly contributed to our knowledge of other branched epithelial structures. This review chapter highlights a selection of the mouse models exhibiting a pubertal mammary gland phenotype with a focus on how they have contributed to our overall understanding of in vivo mammary morphogenesis. We discuss mouse models that have enabled us to assign functions to particular genes and proteins and, more importantly, have determined when and where these factors are required for completion of ductal outgrowth and branch patterning. The reason for the success of the mouse mammary gland model is undoubtedly the suitability of the postnatal mammary gland to experimental manipulation. The gland itself is very amenable to investigation and the combination of genetic modification with accessibility to the tissue has allowed an impressive number of studies to inform biology. Excision of the rudimentary epithelial structure postnatally allows genetically modified tissue to be readily transplanted into wild type stroma or vice versa, and has thus defined the contribution of each compartment to particular phenotypes. Similarly, whole gland transplantation has been used to definitively discern local effects from indirect systemic effects of various growth factors and hormones. While appreciative of the power of these tools and techniques, we are also cognizant of some of their limitations, and we discuss some shortcomings and future strategies that can overcome them.
Collapse
Affiliation(s)
- Jean McBryan
- Department of Molecular Medicine Royal College of Surgeons in Ireland Education and Research Centre, Beaumont Hospital, Dublin, 9, Ireland
| | - Jillian Howlin
- Division of Oncology-Pathology, Lund University Cancer Center/Medicon Village, Building 404:B2, Scheelevägen 2, 223 81, Lund, Sweden.
| |
Collapse
|
33
|
Sharma VK, Kundu SS, Prusty S, Datt C, Kumar M. Nutrient utilisation, growth performance and blood metabolites in Murrah buffalo calves (Bubalus bubalis) divergently selected for residual feed intake. Arch Anim Nutr 2016; 70:455-69. [DOI: 10.1080/1745039x.2016.1233678] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
34
|
Blutke A, Schneider MR, Wolf E, Wanke R. Growth hormone (GH)-transgenic insulin-like growth factor 1 (IGF1)-deficient mice allow dissociation of excess GH and IGF1 effects on glomerular and tubular growth. Physiol Rep 2016; 4:4/5/e12709. [PMID: 26997624 PMCID: PMC4823598 DOI: 10.14814/phy2.12709] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Growth hormone (GH)‐transgenic mice with permanently elevated systemic levels of GH and insulin‐like growth factor 1 (IGF1) reproducibly develop renal and glomerular hypertrophy and subsequent progressive glomerulosclerosis, finally leading to terminal renal failure. To dissociate IGF1‐dependent and ‐independent effects of GH excess on renal growth and lesion development in vivo, the kidneys of 75 days old IGF1‐deficient (I−/−) and of IGF1‐deficient GH‐transgenic mice (I−/−/G), as well as of GH‐transgenic (G) and nontransgenic wild‐type control mice (I+/+) were examined by quantitative stereological and functional analyses. Both G and I−/−/G mice developed glomerular hypertrophy, hyperplasia of glomerular mesangial and endothelial cells, podocyte hypertrophy and foot process effacement, albuminuria, and glomerulosclerosis. However, I−/−/G mice exhibited less severe glomerular alterations, as compared to G mice. Compared to I+/+ mice, G mice exhibited renal hypertrophy with a significant increase in the number without a change in the size of proximal tubular epithelial (PTE) cells. In contrast, I−/−/G mice did not display significant PTE cell hyperplasia, as compared to I−/− mice. These findings indicate that GH excess stimulates glomerular growth and induces lesions progressing to glomerulosclerosis in the absence of IGF1. In contrast, IGF1 represents an important mediator of GH‐dependent proximal tubular growth in GH‐transgenic mice.
Collapse
Affiliation(s)
- Andreas Blutke
- Institute of Veterinary Pathology at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-University Muenchen, Munich, Germany
| | - Marlon R Schneider
- Chair for Molecular Animal Breeding and Biotechnology, Gene Centre Ludwig-Maximilians-University Muenchen, Munich, Germany
| | - Eckhard Wolf
- Chair for Molecular Animal Breeding and Biotechnology, Gene Centre Ludwig-Maximilians-University Muenchen, Munich, Germany
| | - Rüdiger Wanke
- Institute of Veterinary Pathology at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-University Muenchen, Munich, Germany
| |
Collapse
|
35
|
Erdem C, Nagle AM, Casa AJ, Litzenburger BC, Wang YF, Taylor DL, Lee AV, Lezon TR. Proteomic Screening and Lasso Regression Reveal Differential Signaling in Insulin and Insulin-like Growth Factor I (IGF1) Pathways. Mol Cell Proteomics 2016; 15:3045-57. [PMID: 27364358 PMCID: PMC5013316 DOI: 10.1074/mcp.m115.057729] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 06/23/2016] [Indexed: 01/22/2023] Open
Abstract
Insulin and insulin-like growth factor I (IGF1) influence cancer risk and progression through poorly understood mechanisms. To better understand the roles of insulin and IGF1 signaling in breast cancer, we combined proteomic screening with computational network inference to uncover differences in IGF1 and insulin induced signaling. Using reverse phase protein array, we measured the levels of 134 proteins in 21 breast cancer cell lines stimulated with IGF1 or insulin for up to 48 h. We then constructed directed protein expression networks using three separate methods: (i) lasso regression, (ii) conventional matrix inversion, and (iii) entropy maximization. These networks, named here as the time translation models, were analyzed and the inferred interactions were ranked by differential magnitude to identify pathway differences. The two top candidates, chosen for experimental validation, were shown to regulate IGF1/insulin induced phosphorylation events. First, acetyl-CoA carboxylase (ACC) knock-down was shown to increase the level of mitogen-activated protein kinase (MAPK) phosphorylation. Second, stable knock-down of E-Cadherin increased the phospho-Akt protein levels. Both of the knock-down perturbations incurred phosphorylation responses stronger in IGF1 stimulated cells compared with insulin. Overall, the time-translation modeling coupled to wet-lab experiments has proven to be powerful in inferring differential interactions downstream of IGF1 and insulin signaling, in vitro.
Collapse
Affiliation(s)
- Cemal Erdem
- From the ‡Department of Computational & Systems Biology, University of Pittsburgh, Pittsburgh, Pennsylvania; §University of Pittsburgh Drug Discovery Institute, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Alison M Nagle
- ¶Department of Pharmacology & Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania; ‖Women's Cancer Research Center, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania
| | - Angelo J Casa
- **Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas
| | - Beate C Litzenburger
- **Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas
| | - Yu-Fen Wang
- **Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, Texas
| | - D Lansing Taylor
- From the ‡Department of Computational & Systems Biology, University of Pittsburgh, Pittsburgh, Pennsylvania; §University of Pittsburgh Drug Discovery Institute, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Adrian V Lee
- ¶Department of Pharmacology & Chemical Biology, University of Pittsburgh, Pittsburgh, Pennsylvania; ‖Women's Cancer Research Center, University of Pittsburgh Cancer Institute, Pittsburgh, Pennsylvania; ‡‡Department of Human Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Timothy R Lezon
- From the ‡Department of Computational & Systems Biology, University of Pittsburgh, Pittsburgh, Pennsylvania; §University of Pittsburgh Drug Discovery Institute, University of Pittsburgh, Pittsburgh, Pennsylvania;
| |
Collapse
|
36
|
Impaired phosphorylation of JAK2-STAT5b signaling in fibroblasts from uremic children. Pediatr Nephrol 2016; 31:965-74. [PMID: 26747624 DOI: 10.1007/s00467-015-3289-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 11/20/2015] [Accepted: 12/01/2015] [Indexed: 12/28/2022]
Abstract
BACKGROUND Chronic kidney disease (CKD) in children is characterized by severe growth failure. The growth hormone/insulin-like growth factor-1 (GH/IGF-1) axis in uremic animals shows a post-receptor impaired phosphorylation of Janus kinase 2/signal transducer and activator of transcription (JAK-STAT) proteins. The objective of our study was to characterize the intracellular phosphorylation of JAK-STAT signaling in fibroblasts from children with CKD on chronic peritoneal dialysis (PD). METHODS Serum GH-binding protein (GHBP), IGF-1 and IGFBP3 were measured in 15 prepubertal CKD stage-5 children on PD. Cytoplasmic JAK2, cytoplasmic/nuclear STAT5b and nuclear IGFBP3, acid-labile subunit (ALS) and IGF-1 mRNA expression were quantified in fibroblasts obtained from skin biopsies before and after stimulation with 200 ng/ml recombinant human growth hormone (rhGH). Phosphorylation activity at both the cytoplasmic and nuclear level was expressed as the ratio phosphorylated (p)/total (t) abundance of the product (p/t) at 30 and 60 min. Fifteen healthy children were recruited as the control group. Values were expressed in arbitrary units (AU) and normalized for comparison. Significance was defined as p < 0.05. RESULTS Thirty minutes after rhGH stimulus, the cytoplasmic (p/t) JAK2 ratio was significantly lower in patients than in controls [median and interquartile range (IQR): 7.4 (4.56) vs. 20.5 (50.06) AU]. At 60 min after rhGH stimulation, median JAK2 phosphorylation activity was still significantly lower in the patients [7.14 (IQR 3.8) vs. 10.2 (IQR 29.8) AU; p < 0.05]. The increase in the cytoplasmic (p/t) STAT5b/β-actin ratio was lower at both measurement points in the patients compared to the controls, without reaching statistical significance between groups. Median IGFBP3 mRNA abundance was significantly decreased in fibroblasts from uremic patients 24 h after rhGH stimulation compared to the healthy controls [1.27 (IQR 0.83) vs. 2.37 (IQR 0.80) AU]. Median ALS and IGF-1 mRNA expression changed in response to rhGH stimuli at 24 and 48 h. CONCLUSION In this study, children with CKD undergoing PD therapy showed an impaired phosphorylation of JAK2/STAT5b signaling in fibroblasts after GH stimulation, as well as impaired IGFBP3 mRNA abundance. Both impairments may be partially responsible for the observed resistance to the growth-promoting actions of GH in chronic kidney failure.
Collapse
|
37
|
Fontanesi L, Scotti E, Buttazzoni L, Dall’Olio S, Russo V. Analysis of Association Between a Microsatellite at Intron 1 of the Insulin-Like Growth Factor 1 (IGF1) Gene and Fat Deposition, Meat Production and Quality Traits in Italian Large White and Italian Duroc Pigs. ITALIAN JOURNAL OF ANIMAL SCIENCE 2016. [DOI: 10.4081/ijas.2013.e72] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
38
|
Jackson R, Tilokee EL, Latham N, Mount S, Rafatian G, Strydhorst J, Ye B, Boodhwani M, Chan V, Ruel M, Ruddy TD, Suuronen EJ, Stewart DJ, Davis DR. Paracrine Engineering of Human Cardiac Stem Cells With Insulin-Like Growth Factor 1 Enhances Myocardial Repair. J Am Heart Assoc 2015; 4:e002104. [PMID: 26363004 PMCID: PMC4599498 DOI: 10.1161/jaha.115.002104] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Insulin-like growth factor 1 (IGF-1) activates prosurvival pathways and improves postischemic cardiac function, but this key cytokine is not robustly expressed by cultured human cardiac stem cells. We explored the influence of an enhanced IGF-1 paracrine signature on explant-derived cardiac stem cell-mediated cardiac repair. METHODS AND RESULTS Receptor profiling demonstrated that IGF-1 receptor expression was increased in the infarct border zones of experimentally infarcted mice by 1 week after myocardial infarction. Human explant-derived cells underwent somatic gene transfer to overexpress human IGF-1 or the green fluorescent protein reporter alone. After culture in hypoxic reduced-serum media, overexpression of IGF-1 enhanced proliferation and expression of prosurvival transcripts and prosurvival proteins and decreased expression of apoptotic markers in both explant-derived cells and cocultured neonatal rat ventricular cardiomyocytes. Transplant of explant-derived cells genetically engineered to overexpress IGF-1 into immunodeficient mice 1 week after infarction boosted IGF-1 content within infarcted tissue and long-term engraftment of transplanted cells while reducing apoptosis and long-term myocardial scarring. CONCLUSIONS Paracrine engineering of explant-derived cells to overexpress IGF-1 provided a targeted means of improving cardiac stem cell-mediated repair by enhancing the long-term survival of transplanted cells and surrounding myocardium.
Collapse
Affiliation(s)
| | | | | | - Seth Mount
- University of Ottawa Heart InstituteOttawa, Canada
| | | | | | - Bin Ye
- University of Ottawa Heart InstituteOttawa, Canada
| | | | - Vincent Chan
- University of Ottawa Heart InstituteOttawa, Canada
| | - Marc Ruel
- University of Ottawa Heart InstituteOttawa, Canada
| | | | | | | | - Darryl R Davis
- University of Ottawa Heart InstituteOttawa, Canada
- Correspondence to: Darryl R. Davis, MD, University of Ottawa Heart Institute, H3214 40 Ruskin Ave, Ottawa, Ontario, Canada K1Y4W7. E-mail:
| |
Collapse
|
39
|
Martinez CS, Piazza VG, Díaz ME, Boparai RK, Arum O, Ramírez MC, González L, Becú-Villalobos D, Bartke A, Turyn D, Miquet JG, Sotelo AI. GH/STAT5 signaling during the growth period in livers of mice overexpressing GH. J Mol Endocrinol 2015; 54:171-84. [PMID: 25691498 PMCID: PMC4811361 DOI: 10.1530/jme-14-0262] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
GH/STAT5 signaling is desensitized in the liver in adult transgenic mice overexpressing GH; however, these animals present greater body size. To assess whether the STAT5 pathway is active during the growth period in the liver in these animals, and how signaling modulators participate in this process, growing transgenic mice and normal siblings were evaluated. STAT5 does not respond to an acute GH-stimulus, but displays higher basal phosphorylation in the livers of growing GH-overexpressing mice. GH receptor and the positive modulators glucocorticoid receptor and HNF1 display greater abundance in transgenic animals, supporting the activity of STAT5. The negative modulators cytokine-induced suppressor and PTP1B are increased in GH-overexpressing mice. The suppressors SOCS2 and SOCS3 exhibit higher mRNA levels in transgenic mice but lower protein content, indicating that they are being actively degraded. Therefore, STAT5 signaling is increased in the liver in GH-transgenic mice during the growth period, with a balance between positive and negative effectors resulting in accelerated but controlled growth.
Collapse
Affiliation(s)
- Carolina S Martinez
- Facultad de Farmacia y BioquímicaInstituto de Química y Fisicoquímica Biológicas (UBA-CONICET), Universidad de Buenos Aires, Junín 956, 1113 Buenos Aires, ArgentinaDepartment of Geriatrics (A.B.)School of Medicine, Southern Illinois University, Springfield, Illinois, USAInstituto de Biología y Medicina Experimental (CONICET)Vuelta de Obligado 2490, Buenos Aires, Argentina
| | - Verónica G Piazza
- Facultad de Farmacia y BioquímicaInstituto de Química y Fisicoquímica Biológicas (UBA-CONICET), Universidad de Buenos Aires, Junín 956, 1113 Buenos Aires, ArgentinaDepartment of Geriatrics (A.B.)School of Medicine, Southern Illinois University, Springfield, Illinois, USAInstituto de Biología y Medicina Experimental (CONICET)Vuelta de Obligado 2490, Buenos Aires, Argentina
| | - María E Díaz
- Facultad de Farmacia y BioquímicaInstituto de Química y Fisicoquímica Biológicas (UBA-CONICET), Universidad de Buenos Aires, Junín 956, 1113 Buenos Aires, ArgentinaDepartment of Geriatrics (A.B.)School of Medicine, Southern Illinois University, Springfield, Illinois, USAInstituto de Biología y Medicina Experimental (CONICET)Vuelta de Obligado 2490, Buenos Aires, Argentina
| | - Ravneet K Boparai
- Facultad de Farmacia y BioquímicaInstituto de Química y Fisicoquímica Biológicas (UBA-CONICET), Universidad de Buenos Aires, Junín 956, 1113 Buenos Aires, ArgentinaDepartment of Geriatrics (A.B.)School of Medicine, Southern Illinois University, Springfield, Illinois, USAInstituto de Biología y Medicina Experimental (CONICET)Vuelta de Obligado 2490, Buenos Aires, Argentina
| | - Oge Arum
- Facultad de Farmacia y BioquímicaInstituto de Química y Fisicoquímica Biológicas (UBA-CONICET), Universidad de Buenos Aires, Junín 956, 1113 Buenos Aires, ArgentinaDepartment of Geriatrics (A.B.)School of Medicine, Southern Illinois University, Springfield, Illinois, USAInstituto de Biología y Medicina Experimental (CONICET)Vuelta de Obligado 2490, Buenos Aires, Argentina
| | - María C Ramírez
- Facultad de Farmacia y BioquímicaInstituto de Química y Fisicoquímica Biológicas (UBA-CONICET), Universidad de Buenos Aires, Junín 956, 1113 Buenos Aires, ArgentinaDepartment of Geriatrics (A.B.)School of Medicine, Southern Illinois University, Springfield, Illinois, USAInstituto de Biología y Medicina Experimental (CONICET)Vuelta de Obligado 2490, Buenos Aires, Argentina
| | - Lorena González
- Facultad de Farmacia y BioquímicaInstituto de Química y Fisicoquímica Biológicas (UBA-CONICET), Universidad de Buenos Aires, Junín 956, 1113 Buenos Aires, ArgentinaDepartment of Geriatrics (A.B.)School of Medicine, Southern Illinois University, Springfield, Illinois, USAInstituto de Biología y Medicina Experimental (CONICET)Vuelta de Obligado 2490, Buenos Aires, Argentina
| | - Damasia Becú-Villalobos
- Facultad de Farmacia y BioquímicaInstituto de Química y Fisicoquímica Biológicas (UBA-CONICET), Universidad de Buenos Aires, Junín 956, 1113 Buenos Aires, ArgentinaDepartment of Geriatrics (A.B.)School of Medicine, Southern Illinois University, Springfield, Illinois, USAInstituto de Biología y Medicina Experimental (CONICET)Vuelta de Obligado 2490, Buenos Aires, Argentina
| | - Andrzej Bartke
- Facultad de Farmacia y BioquímicaInstituto de Química y Fisicoquímica Biológicas (UBA-CONICET), Universidad de Buenos Aires, Junín 956, 1113 Buenos Aires, ArgentinaDepartment of Geriatrics (A.B.)School of Medicine, Southern Illinois University, Springfield, Illinois, USAInstituto de Biología y Medicina Experimental (CONICET)Vuelta de Obligado 2490, Buenos Aires, Argentina
| | - Daniel Turyn
- Facultad de Farmacia y BioquímicaInstituto de Química y Fisicoquímica Biológicas (UBA-CONICET), Universidad de Buenos Aires, Junín 956, 1113 Buenos Aires, ArgentinaDepartment of Geriatrics (A.B.)School of Medicine, Southern Illinois University, Springfield, Illinois, USAInstituto de Biología y Medicina Experimental (CONICET)Vuelta de Obligado 2490, Buenos Aires, Argentina
| | - Johanna G Miquet
- Facultad de Farmacia y BioquímicaInstituto de Química y Fisicoquímica Biológicas (UBA-CONICET), Universidad de Buenos Aires, Junín 956, 1113 Buenos Aires, ArgentinaDepartment of Geriatrics (A.B.)School of Medicine, Southern Illinois University, Springfield, Illinois, USAInstituto de Biología y Medicina Experimental (CONICET)Vuelta de Obligado 2490, Buenos Aires, Argentina
| | - Ana I Sotelo
- Facultad de Farmacia y BioquímicaInstituto de Química y Fisicoquímica Biológicas (UBA-CONICET), Universidad de Buenos Aires, Junín 956, 1113 Buenos Aires, ArgentinaDepartment of Geriatrics (A.B.)School of Medicine, Southern Illinois University, Springfield, Illinois, USAInstituto de Biología y Medicina Experimental (CONICET)Vuelta de Obligado 2490, Buenos Aires, Argentina
| |
Collapse
|
40
|
Abstract
The association between leptin and reproduction originated with the leptin-mediated correction of sterility in ob/ob mice and initiation of reproductive function in normal female mice. The uncovering of a central leptin pathway regulating food intake prompted the dissection of neuroendocrine mechanisms involving leptin in the metabolic control of reproduction. The absence of leptin receptors on GnRH neurons incited a search for intermediary neurons situated between leptin-responsive and GnRH neurons. This review addresses the most significant findings that have furthered our understanding of recent progress in this new field. The role of leptin in puberty was impacted by the discovery of neurons that co-express kisspeptin, neurokinin B, and dynorphin and these could act as leptin intermediates. Furthermore, the identification of first-order leptin-responsive neurons in the premammilary ventral nucleus and other brain regions opens new avenues to explore their relationship to GnRH neurons. Central to these advances is the unveiling that agouti-related protein/neuropeptide Y neurons project onto GnRH and kisspeptin neurons, allowing for a crosstalk between food intake and reproduction. Finally, while puberty is a state of leptin sensitivity, mid-gestation represents a state of leptin resistance aimed at building energy stores to sustain pregnancy and lactation. The mechanisms underlying leptin resistance in pregnancy have lagged; however, the establishment of this natural state is significant. Reproduction and energy balance are tightly controlled and backed up by redundant mechanisms that are critical for the survival of our species. It will be the goal of the following decade to shed new light on these complex and essential pathways.
Collapse
Affiliation(s)
- Farid F Chehab
- Department of Laboratory MedicineUniversity of California, San Francisco, San Francisco, California 94132, USA
| |
Collapse
|
41
|
Identification of differentially expressed genes in breast muscle and skin fat of postnatal Pekin duck. PLoS One 2014; 9:e107574. [PMID: 25264787 PMCID: PMC4180276 DOI: 10.1371/journal.pone.0107574] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Accepted: 08/20/2014] [Indexed: 11/21/2022] Open
Abstract
Lean-type Pekin duck is a commercial breed that has been obtained through long-term selection. Investigation of the differentially expressed genes in breast muscle and skin fat at different developmental stages will contribute to a comprehensive understanding of the potential mechanisms underlying the lean-type Pekin duck phenotype. In the present study, RNA-seq was performed on breast muscle and skin fat at 2-, 4- and 6-weeks of age. More than 89% of the annotated duck genes were covered by our RNA-seq dataset. Thousands of differentially expressed genes, including many important genes involved in the regulation of muscle development and fat deposition, were detected through comparison of the expression levels in the muscle and skin fat of the same time point, or the same tissue at different time points. KEGG pathway analysis showed that the differentially expressed genes clustered significantly in many muscle development and fat deposition related pathways such as MAPK signaling pathway, PPAR signaling pathway, Calcium signaling pathway, Fat digestion and absorption, and TGF-beta signaling pathway. The results presented here could provide a basis for further investigation of the mechanisms involved in muscle development and fat deposition in Pekin duck.
Collapse
|
42
|
A specific adenylyl cyclase inhibitor (DDA) and a cyclic AMP-dependent protein kinase inhibitor (H-89) block the action of equine growth hormone on in vitro maturation of equine oocytes. ZYGOTE 2014; 23:795-801. [DOI: 10.1017/s0967199414000434] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
SummaryThe objectives of this study were firstly to determine whether the stimulatory function of equine growth hormone (eGH) on equine oocyte maturation in vitro is mediated via cyclic adenosine monophosphate (cAMP); and secondly if the addition of eGH in vitro influences oocyte nuclear maturation and if this effect is removed when GH inhibitors are added to the culture. Cumulus–oocyte complexes (COCs) were recovered from follicles <25 mm in diameter and randomly allocated as follows: (i) control (no additives); and (ii) 400 ng/ml of eGH. A specific inhibitor against cyclic AMP-dependent protein kinase (H-89; 10−9, 10−11 or 10−15 M concentration) and a specific adenylate cyclase inhibitor, 2′,3′-dideoxyadenosine (DDA; 10−8, 10−10 or 10−14 M concentration) were used to observe whether they could block the eGH effect. After 30 h of in vitro maturation at 38.5°C with 5% CO2 in air, oocytes were stained with 10 μg/ml of Hoechst to evaluate nuclear status. More mature oocytes (P < 0.05) were detected when COCs were incubated with eGH (29 of 84; 34.5%) than in the control group (18 of 82; 21.9%). The H-89 inhibitor used at a concentration of 10−9 M (4 of 29; 13.8%) decreased (P < 0.05) the number of oocytes reaching nuclear maturation when compared with eGH (11 of 29; 38%). The DDA inhibitor at a concentration of 10−8 M (2 of 27; 7.4%) also reduced (P < 0.05) the number of oocytes reaching maturity when compared with the eGH group (9 of 30; 30%). Results from the present study show that H-89 and DDA can be used in vitro to block the eGH effect on equine oocyte maturation.
Collapse
|
43
|
Blutke A, Schneider MR, Renner-Müller I, Herbach N, Wanke R, Wolf E. Genetic dissection of IGF1-dependent and -independent effects of permanent GH excess on postnatal growth and organ pathology of mice. Mol Cell Endocrinol 2014; 394:88-98. [PMID: 25017732 DOI: 10.1016/j.mce.2014.07.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Revised: 06/07/2014] [Accepted: 07/03/2014] [Indexed: 11/28/2022]
Abstract
To study insulin-like growth factor 1 (IGF1)-independent effects of permanent growth hormone (GH) excess on body and organ growth and pathology in vivo, hemizygous bovine GH transgenic mice with homozygous disruption of the Igf1 gene (Igf1(-/-)/GH) were generated, and examined in comparison to Igf1(-/-), Igf1(+/-), wild-type (WT), Igf1(+/-)/GH, and GH mice. GH mice and Igf1(+/-)/GH mice showed increased serum IGF1 levels and the well-known giant-phenotype of GH transgenic mice. In contrast, the typical dwarf-phenotype of Igf1(-/-) mice was only slightly ameliorated in Igf1(-/-)/GH mice. Similar to GH mice, Igf1(-/-)/GH mice displayed hepatocellular hypertrophy, glomerulosclerosis, and reduced volumes of acidophilic cells in the pituitary gland. However, GH excess associated skin lesions of male GH mice were not observed in Igf1(-/-)/GH mice. Therefore, development of GH excess induced liver-, kidney-, and pituitary gland-alterations in GH transgenic mice is independent of IGF1 whereas GH stimulated body growth depends on IGF1.
Collapse
Affiliation(s)
- A Blutke
- Institute of Veterinary Pathology at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität, Veterinärstr. 13, 80539 Munich, Germany.
| | - M R Schneider
- Molecular Animal Breeding and Biotechnology, and Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, Ludwig-Maximilians-Universität, Feodor-Lynen-Str. 25, 81377 Munich, Germany
| | - I Renner-Müller
- Molecular Animal Breeding and Biotechnology, and Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, Ludwig-Maximilians-Universität, Feodor-Lynen-Str. 25, 81377 Munich, Germany
| | - N Herbach
- Institute of Veterinary Pathology at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität, Veterinärstr. 13, 80539 Munich, Germany
| | - R Wanke
- Institute of Veterinary Pathology at the Centre for Clinical Veterinary Medicine, Ludwig-Maximilians-Universität, Veterinärstr. 13, 80539 Munich, Germany
| | - E Wolf
- Molecular Animal Breeding and Biotechnology, and Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, Ludwig-Maximilians-Universität, Feodor-Lynen-Str. 25, 81377 Munich, Germany
| |
Collapse
|
44
|
|
45
|
Moody G, Beltran PJ, Mitchell P, Cajulis E, Chung YA, Hwang D, Kendall R, Radinsky R, Cohen P, Calzone FJ. IGF1R blockade with ganitumab results in systemic effects on the GH-IGF axis in mice. J Endocrinol 2014; 221:145-55. [PMID: 24492468 PMCID: PMC4160154 DOI: 10.1530/joe-13-0306] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Ganitumab is a fully human MAB to the human type 1 IGF receptor (IGF1R). Binding assays showed that ganitumab recognized murine IGF1R with sub-nanomolar affinity (KD=0.22 nM) and inhibited the interaction of murine IGF1R with IGF1 and IGF2. Ganitumab inhibited IGF1-induced activation of IGF1R in murine lungs and CT26 murine colon carcinoma cells and tumors. Addition of ganitumab to 5-fluorouracil resulted in enhanced inhibition of tumor growth in the CT26 model. Pharmacological intervention with ganitumab in naïve nude mice resulted in a number of physiological changes described previously in animals with targeted deletions of Igf1 and Igf1r, including inhibition of weight gain, reduced glucose tolerance and significant increase in serum levels of GH, IGF1 and IGFBP3. Flow cytometric analysis identified GR1/CD11b-positive cells as the highest IGF1R-expressing cells in murine peripheral blood. Administration of ganitumab led to a dose-dependent, reversible decrease in the number of peripheral neutrophils with no effect on erythrocytes or platelets. These findings indicate that acute IGF availability for its receptor plays a critical role in physiological growth, glucose metabolism and neutrophil physiology and support the presence of a pituitary IGF1R-driven negative feedback loop that tightly regulates serum IGF1 levels through Gh signaling.
Collapse
Affiliation(s)
- Gordon Moody
- Oncology Research Therapeutic Area, Amgen, Inc., One Amgen Center Drive, Thousand Oaks, California 91320, USA David Geffen School of Medicine, Los Angeles, California, USA USC Davis School of Gerontology, Los Angeles, California, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Kennedy OD, Sun H, Wu Y, Courtland HW, Williams GA, Cardoso L, Basta-Pljakic J, Schaffler MB, Yakar S. Skeletal response of male mice to anabolic hormone therapy in the absence of the Igfals gene. Endocrinology 2014; 155:987-99. [PMID: 24424061 PMCID: PMC3929729 DOI: 10.1210/en.2013-1819] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
IGF-I is a critical regulator of skeletal acquisition, which acts in endocrine and autocrine/paracrine modes. In serum, IGF-I is carried by the IGF-binding proteins in binary complexes. Further stabilization of these complexes is achieved by binding to the acid labile subunit (ALS) in a ternary complex (of IGF-I-IGF-binding protein 3/5-ALS). Ablation of the Igfals gene in humans (ALS deficiency) and mice (ALS knockout [ALSKO]) leads to markedly decreased serum IGF-I levels, growth retardation, and impaired skeletal acquisition. To investigate whether hormonal replacement therapy would improve the skeletal phenotype in cases of Igfals gene ablation, we treated male ALSKO mice with GH, IGF-I, or a combination of both. Treatments were administered to animals between 4 and 16 weeks of age or from 8 to 16 weeks of age. Although all treatment groups showed an increase (20%) in serum IGF-I levels, there was no increase in body weight, weight gain, or bone length in either age group. Despite the blunted linear growth in response to hormone therapy, ALSKO mice treated with GH showed radial bone growth, which contributed to bone strength tested by 4-point bending. We found that ALSKO mice treated with GH showed increased total cross-sectional area, cortical bone area, and cortical thickness by microtomography. Dynamic histomorphometry showed that although GH and double treatment groups resulted in trends towards increased bone formation parameters, these did not reach significance. However, bone resorption parameters were significantly increased in all treatment groups. ALSKO mice treated between 4 and 16 weeks of age showed minor differences in bone traits compared with vehicle-treated mice. In conclusion, treatment with GH and IGF-I do not work synergistically to rescue the stunted growth found in mice lacking the Igfals gene. Although GH alone appears to increase bone parameters slightly, it does not affect body weight or linear growth.
Collapse
Affiliation(s)
- Oran D Kennedy
- Department of Biomedical Engineering (O.D.K., L.C., J.B.-P., M.B.S.), City College of New York, New York 10031; David B. Kriser Dental Center (H.S., Y.W., G.A.W., S.Y.), Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, New York 10010-4086; and Division of Endocrinology (H.-W.C., S.Y.), Diabetes and Bone Disease, Mount Sinai School of Medicine, New York, New York 10029-6547
| | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Lodjak J, Mägi M, Tilgar V. Insulin-like growth factor 1 and growth rate in nestlings of a wild passerine bird. Funct Ecol 2013. [DOI: 10.1111/1365-2435.12164] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jaanis Lodjak
- Department of Zoology; Institute of Ecology and Earth Sciences; University of Tartu; 46 Vanemuise Street Tartu 51014 Estonia
| | - Marko Mägi
- Department of Zoology; Institute of Ecology and Earth Sciences; University of Tartu; 46 Vanemuise Street Tartu 51014 Estonia
| | - Vallo Tilgar
- Department of Zoology; Institute of Ecology and Earth Sciences; University of Tartu; 46 Vanemuise Street Tartu 51014 Estonia
| |
Collapse
|
48
|
Pandey N, Singh R, Saxena V, Shit N, Singh R, Sharma R, Sastry K. Effect of IGF1 gene polymorphism and expression levels on growth factors in Indian colored broilers. Livest Sci 2013. [DOI: 10.1016/j.livsci.2013.05.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
49
|
Lorenzini A, Salmon AB, Lerner C, Torres C, Ikeno Y, Motch S, McCarter R, Sell C. Mice producing reduced levels of insulin-like growth factor type 1 display an increase in maximum, but not mean, life span. J Gerontol A Biol Sci Med Sci 2013; 69:410-9. [PMID: 23873963 DOI: 10.1093/gerona/glt108] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Reduced signaling through the IGF type 1 (IGF-1) receptor increases life span in multiple invertebrate organisms. Studies on mammalian longevity suggest that reducing levels of IGF-1 may also increase life span. However, the data are conflicting and complicated by the physiology of the mammalian neuroendocrine system. We have performed life-span analysis on mice homozygous for an insertion in the Igf1 gene. These mice produce reduced levels of IGF-1 and display a phenotype consistent with a significant decrease in IGF-1. Life-span analysis was carried out at three independent locations. Although the life-span data varied between sites, the maximum life span of the IGF-1-deficient mice was significantly increased and age-specific mortality rates were reduced in the IGF-1-deficient mice; however, mean life span did not differ except at one site, where mean life span was increased in female IGF-1-deficient animals. Early life mortality was noted in one cohort of IGF-1-deficient mice. The results are consistent with a significant role for IGF-1 in the modulation of life span but contrast with the published life-span data for the hypopituitary Ames and Snell dwarf mice and growth hormone receptor null mice, indicating that a reduction in IGF-1 alone is insufficient to increase both mean and maximal life span in mice.
Collapse
Affiliation(s)
- Antonello Lorenzini
- Department of Pathology, Drexel University COM, 245 N 15th Street, Philadelphia, PA 19102.
| | | | | | | | | | | | | | | |
Collapse
|
50
|
Fadiel A, Epperson B, Shaw MI, Hamza A, Petito J, Naftolin F. Bioinformatic analysis of benzo-α-pyrene-induced damage to the human placental insulin-like growth factor-1 gene. Reprod Sci 2013; 20:917-28. [PMID: 23344457 DOI: 10.1177/1933719112468946] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
INTRODUCTION Intrauterine growth restriction (IUGR) has been associated with exposure to polyaromatic hydrocarbons (PAHs) which are released in the combustion of oil, fuel, gas, garbage, and tobacco. Pregnant women exposed to PAHs are at risk of the effects of these environmental toxins; for example, benzo-α-pyrene (BαP) is able to enter the blood stream and could contribute to IUGR or other developmental abnormalities via effects on the placental cells. Since IUGR has been associated with decreased cord blood concentrations of immunoreactive insulin-like growth factor 1 (ir-IGF-1) and IUGR has been associated with disordered development and fetal programming, we tested the effects of BαP on human placental trophoblast cells in culture. EXPERIMENTAL IGF-1 expression and activation was studied using an immortalized human placental trophoblast cell line (HTR-8). The cells were treated with vehicle control or 1 µmol/L BαP, or 5 µmol/L BαP for 12 hours. RNA was extracted and the exons of IGF-1 were amplified using reverse transcriptase-polymerase chain reaction (RT-PCR). The ir-IGF-1 expression levels were compared using gel electrophoresis. The PCR products were sequenced, and levels of mutation were measured with comparative sequence analysis. A computational protein analysis (computer simulation) was performed in order to assess the potential impact of BαP-associated mutation on IGF-1 protein function. RESULTS The IGF-1 expression decreased considerably in BαP-treated cells relative to untreated controls (P < .05), also in a dose-dependent manner. Comparative sequence analysis indicated that the level of BαP exposure correlated with the percentage of base pair mutations in IGF-1 nucleotide sequences for both treatment groups (P < .05). Shifts were observed in the open reading frame, indicating a possible change in the IGF-1 start codon. Protein folding simulation analysis indicated that the base pair changes induced by BαP weakened IGF-1-IGF binding protein (IGFBP) interaction. CONCLUSIONS In concordance with the previous findings, exposure of human placental trophoblast cells to BαP exposure results in reduction of IGF-1 expression and base pair mutations. The direct action of BαP on the placenta indicates that it may not be necessary for BαP to access other maternal tissues in order for gene abnormalities to occur. Given that PAHs are known to work through aryl hydrocarbon hydrolase (AHH), these results are likely due to the presence of AHH in HTR cells. Computational modeling of BαP actions on IGF1, substrate-ligand binding, supports the biological premise of this work and underlines the need to determine actual biological effects rather than equating immune to bioactivity of IGF1.
Collapse
Affiliation(s)
- A Fadiel
- Department of Obstetrics and Gynecology, New York University School of Medicine, New York, NY, USA.
| | | | | | | | | | | |
Collapse
|