1
|
Cai CL, Marcelino M, Aranda JV, Beharry KD. Comparison of hyperoxia or normoxia resolution of intermittent hypoxia and intermittent hyperoxia episodes on liver histopathology, IGF-1, IGFBP-3, and GHBP in neonatal rats. Growth Horm IGF Res 2023; 72-73:101559. [PMID: 37708588 DOI: 10.1016/j.ghir.2023.101559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/23/2023] [Accepted: 09/06/2023] [Indexed: 09/16/2023]
Abstract
OBJECTIVE Extremely low gestational age neonates requiring oxygen therapy for chronic lung disease experience repeated fluctuations in arterial oxygen saturation, or intermittent hypoxia (IH), during the first few weeks of life. These events are associated with a high risk for reduced growth, hypertension, and insulin resistance in later life. This study tested the hypothesis that IH, or intermittent hyperoxia have similar negative effects on the liver; somatic growth; and liver insulin-like growth factor (IGF)-I, IGF binding protein (BP)-3, and growth hormone binding protein (GHBP), regardless of resolution in normoxia or hyperoxia between episodes. DESIGN Newborn rats on the first day of life (P0) were exposed to two IH paradigms: 1) hyperoxia (50% O2) with brief hypoxia (12% O2); or 2) normoxia (21% O2) with hypoxia (12% O2); intermittent hypoxia (50% O2/21% O2); hyperoxia only (50% O2); or room air (RA, 21% O2). Pups were euthanized on P14 or placed in RA until P21. Controls remained in RA from P0-P21. Growth, liver histopathology, apoptosis, IGFI, IGFBP-3, and GHBP were assessed. RESULTS Pathological findings of the liver hepatocytes, including cellular swelling, steatosis, apoptosis, necrosis and focal sinusoid congestion were seen in the IH and intermittent hyperoxia groups, and were particularly severe in the 21-12% O2 group during exposure (P14) with no significant improvements during recovery/reoxygenation (P21). These effects were associated with induction of HIF1α, and reductions in liver IGFI, IGFBP-3, and GHBP. CONCLUSIONS Exposure to IH or intermittent hyperoxia during the first few weeks of life regardless of resolution in RA or hyperoxia is detrimental to the immature liver. These findings may suggest that interventions to prevent frequent fluctuations in oxygen saturation during early neonatal life remain a high priority.
Collapse
Affiliation(s)
- Charles L Cai
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, State University of New York, Downstate Medical Center, Brooklyn, NY 11203, USA
| | - Matthew Marcelino
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, State University of New York, Downstate Medical Center, Brooklyn, NY 11203, USA
| | - Jacob V Aranda
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, State University of New York, Downstate Medical Center, Brooklyn, NY 11203, USA; Department of Ophthalmology; State University of New York, Downstate Medical Center, Brooklyn, NY 11203, USA
| | - Kay D Beharry
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, State University of New York, Downstate Medical Center, Brooklyn, NY 11203, USA; Department of Ophthalmology; State University of New York, Downstate Medical Center, Brooklyn, NY 11203, USA.
| |
Collapse
|
2
|
Kader Esen V, Esen S. Association of the IGF1 5′UTR Polymorphism in Meat-Type Sheep Breeds Considering Growth, Body Size, Slaughter, and Meat Quality Traits in Turkey. Vet Sci 2023; 10:vetsci10040270. [PMID: 37104425 PMCID: PMC10146731 DOI: 10.3390/vetsci10040270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/23/2023] [Accepted: 03/31/2023] [Indexed: 04/05/2023] Open
Abstract
This investigation was conducted to determine how the growth and carcass traits of meat-type sheep breeds raised in Turkey are associated with IGF1 5′UTR polymorphisms. Overall, 202 lambs from five breeds were evaluated. We identified eight nucleotide changes (seven substitutions and one deletion) in three variants of IGF1 5′UTR by SSCP analysis and nucleotide sequencing. It was found that the P1 variants had a unique deletion (g.171328230 delT), while the P2 variants were identified by SNPs rs401028781, rs422604851, and g.171328404C > Y. The P3 variants possessed one heterozygous substitution (g.171328260G > R) and three homozygous substitutions (g.171328246T > A, g.171328257T > G, g.171328265T > C) not observed in P1 or P2. Based on the growth and production traits, a statistically significant difference was found only in chest width at weaning (p < 0.01) and leg circumferences at yearling (p < 0.05). The P1 variants showed a leaner profile with a higher Musculus longissimus dorsi, but the differences were not significant (p > 0.05). The P2 variants had a higher percentage of rack (p < 0.01) and loin (p > 0.05). Moreover, there was no discernible difference between variants, even though the P3 variants had a higher percentage of neck and leg and the P1 variants had a higher percentage of the shoulder. It is concluded that nucleotide changes in IGF1 5′UTR could be exploited utilizing a marker-assisted selection technique to increase growth and production attributes, as well as carcass quality traits.
Collapse
Affiliation(s)
- Vasfiye Kader Esen
- Department of Breeding and Genetics, Sheep Breeding Research Institute, Balıkesir 10200, Turkey
| | - Selim Esen
- Balikesir Directorate of Provincial Agriculture and Forestry, Republic of Turkey Ministry of Agriculture and Forestry, Balikesir 10470, Turkey
| |
Collapse
|
3
|
Lee J, Ko KR, Lee N, Kim S, Yu SS, Kim S, Lee J. Construction of Plasmid DNA Expressing Two Isoforms of Insulin-Like Growth Factor-1 and Its Effects on Skeletal Muscle Injury Models. Hum Gene Ther 2022; 33:1305-1314. [PMID: 35838121 PMCID: PMC9808797 DOI: 10.1089/hum.2022.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Insulin-like growth factor-1 (IGF-1) plays a significant role in the development of various organs, and several studies have suggested that IGF-1 isoforms, IGF-1 Ea and IGF-1 Ec, are expressed in skeletal muscle to control its growth. In this study, we designed a novel nucleotide sequence, IGF-1-X10, consisting of IGF-1 exons and introns to simultaneously express both IGF-1 Ea and IGF-1 Ec. When transfected into human cells, the expression of both isoforms was observed at the transcript and protein levels. In an animal study, intramuscular injection of plasmid DNA comprising IGF-1-X10 induced the expression of IGF-1 Ea and IGF-1 Ec, leading to the production of functional IGF-1 protein. Finally, the efficacy of this plasmid DNA was tested in a cardiotoxin (CTX)-mediated muscle injury model and age-related muscle atrophy model. We found that IGF-1-X10 increased the muscle mass and controlled several key factors involved in the muscle atrophy program in both models. Taken together, these data suggest that IGF-1-X10 may be utilized in the form of gene therapy for the treatment of various muscle diseases related to IGF-1 deficiency.
Collapse
Affiliation(s)
- Jaeman Lee
- Department of Biological Sciences, Seoul National University, Seoul, Republic of Korea
| | - Kyeong-Ryang Ko
- Department of Biological Sciences, Seoul National University, Seoul, Republic of Korea
| | - Nayeon Lee
- Department of Biological Sciences, Seoul National University, Seoul, Republic of Korea
| | - Sojin Kim
- R&D Center, Helixmith Co., Ltd., Gangseo-gu, Republic of Korea
| | - Seung-Shin Yu
- R&D Center, Helixmith Co., Ltd., Gangseo-gu, Republic of Korea
| | - Sunyoung Kim
- Department of Biological Sciences, Seoul National University, Seoul, Republic of Korea
| | - Junghun Lee
- Department of Biological Sciences, Seoul National University, Seoul, Republic of Korea,Correspondence: Dr. Junghun Lee, R&D Center, Helixmith Co., Ltd., Gangseo-gu, Republic of Korea.
| |
Collapse
|
4
|
Solís C, Thompson WC, Peña JR, McDermott-Roe C, Langa P, Warren CM, Chrzanowska M, Wolska BM, Solaro RJ, Pieter Detombe, Goldspink PH. Mechano-growth factor E-domain modulates cardiac contractile function through 14-3-3 protein interactomes. Front Physiol 2022; 13:1028345. [PMID: 36467694 PMCID: PMC9709209 DOI: 10.3389/fphys.2022.1028345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Accepted: 10/31/2022] [Indexed: 11/18/2022] Open
Abstract
In the heart, alternative splicing of the igf-I gene produces two isoforms: IGF-IEa and IGF-IEc, (Mechano-growth factor, MGF). The sequence divergence between their E-domain regions suggests differential isoform function. To define the biological actions of MGF's E-domain, we performed in silico analysis of the unique C-terminal sequence and identified a phosphorylation consensus site residing within a putative 14-3-3 binding motif. To test the functional significance of Ser 18 phosphorylation, phospho-mimetic (S/E18) and phospho-null (S/A18) peptides were delivered to mice at different doses for 2 weeks. Cardiovascular function was measured using echocardiography and a pressure-volume catheter. At the lowest (2.25 mg/kg/day) and highest (9 mg/kg/day) doses, the peptides produced a depression in systolic and diastolic parameters. However, at 4.5 mg/kg/day the peptides produced opposing effects on cardiac function. Fractional shortening analysis also showed a similar trend, but with no significant change in cardiac geometry. Microarray analysis discovered 21 genes (FDR p < 0.01), that were expressed accordant with the opposing effects on contractile function at 4.5 mg/kg/day, with the nuclear receptor subfamily 4 group A member 2 (Nr4a2) identified as a potential target of peptide regulation. Testing the regulation of the Nr4a family, showed the E-domain peptides modulate Nr4a gene expression following membrane depolarization with KCl in vitro. To determine the potential role of 14-3-3 proteins, we examined 14-3-3 isoform expression and distribution. 14-3-3γ localized to the myofilaments in neonatal cardiac myocytes, the cardiac myocytes and myofilament extracts from the adult heart. Thermal shift analysis of recombinant 14-3-3γ protein showed the S/A18 peptide destabilized 14-3-3γ folding. Also, the S/A18 peptide significantly inhibited 14-3-3γ's ability to interact with myosin binding protein C (MYPC3) and phospholamban (PLN) in heart lysates from dobutamine injected mice. Conversely, the S/E18 peptide showed no effect on 14-3-3γ stability, did not inhibit 14-3-3γ's interaction with PLN but did inhibit the interaction with MYPC3. Replacing the glutamic acid with a phosphate group on Ser 18 (pSer18), significantly increased 14-3-3γ protein stability. We conclude that the state of Ser 18 phosphorylation within the 14-3-3 binding motif of MGF's E-domain, modulates protein-protein interactions within the 14-3-3γ interactome, which includes proteins involved in the regulation of contractile function.
Collapse
Affiliation(s)
- Christopher Solís
- Department of Physiology and Biophysics, University of Illinois Chicago, Chicago, IL, United States
| | - Walter C. Thompson
- Department of Physiology and Biophysics, University of Illinois Chicago, Chicago, IL, United States
| | - James R. Peña
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Christopher McDermott-Roe
- Department of Medicine, and Department of Genetics, Perelman School of Medicine, Cardiovascular Institute, University of Pennsylvania, Philadelphia, PA, United States
| | - Paulina Langa
- Department of Physiology and Biophysics, University of Illinois Chicago, Chicago, IL, United States,Center for Cardiovascular Research, University of Illinois at Chicago, Chicago, IL, United States
| | - Chad M. Warren
- Department of Physiology and Biophysics, University of Illinois Chicago, Chicago, IL, United States,Center for Cardiovascular Research, University of Illinois at Chicago, Chicago, IL, United States
| | - Magdalena Chrzanowska
- Blood Research Institute, Versiti, Department of Pharmacology and Toxicology, Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Beata M. Wolska
- Center for Cardiovascular Research, University of Illinois at Chicago, Chicago, IL, United States,Department of Medicine, Division of Cardiology, University of Illinois at Chicago, Chicago, IL, United States
| | - R. John Solaro
- Department of Physiology and Biophysics, University of Illinois Chicago, Chicago, IL, United States,Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Pieter Detombe
- Department of Physiology and Biophysics, University of Illinois Chicago, Chicago, IL, United States,Phymedexp, Université de Montpellier, Inserm, CNRS, Montpellier, France
| | - Paul H. Goldspink
- Department of Physiology and Biophysics, University of Illinois Chicago, Chicago, IL, United States,Department of Physiology, Medical College of Wisconsin, Milwaukee, WI, United States,*Correspondence: Paul H. Goldspink,
| |
Collapse
|
5
|
Zheng Y, Luo L, Lambertz IU, Conti CJ, Fuchs-Young R. Early Dietary Exposures Epigenetically Program Mammary Cancer Susceptibility through Igf1-Mediated Expansion of the Mammary Stem Cell Compartment. Cells 2022; 11:cells11162558. [PMID: 36010633 PMCID: PMC9406400 DOI: 10.3390/cells11162558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/30/2022] [Accepted: 08/01/2022] [Indexed: 11/17/2022] Open
Abstract
Diet is a critical environmental factor affecting breast cancer risk, and recent evidence shows that dietary exposures during early development can affect lifetime mammary cancer susceptibility. To elucidate the underlying mechanisms, we used our established crossover feeding mouse model, where exposure to a high-fat and high-sugar (HFHS) diet during defined developmental windows determines mammary tumor incidence and latency in carcinogen-treated mice. Mammary tumor incidence is significantly increased in mice receiving a HFHS post-weaning diet (high-tumor mice, HT) compared to those receiving a HFHS diet during gestation (low-tumor mice, LT). The current study revealed that the mammary stem cell (MaSC) population was significantly increased in mammary glands from HT compared to LT mice. Igf1 expression was increased in mammary stromal cells from HT mice, where it promoted MaSC self-renewal. The increased Igf1 expression was induced by DNA hypomethylation of the Igf1 Pr1 promoter, mediated by a decrease in Dnmt3b levels. Mammary tissues from HT mice also had reduced levels of Igfbp5, leading to increased bioavailability of tissue Igf1. This study provides novel insights into how early dietary exposures program mammary cancer risk, demonstrating that effective dietary intervention can reduce mammary cancer incidence.
Collapse
Affiliation(s)
- Yuanning Zheng
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, Bryan, TX 77807, USA
| | - Linjie Luo
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, Bryan, TX 77807, USA
| | - Isabel U. Lambertz
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, Bryan, TX 77807, USA
| | - Claudio J. Conti
- Department of Bioengineering, Tissue Engineering and Regenerative Medicine Group (TERMeG), Universidad Carlos III de Madrid, 28903 Madrid, Spain
| | - Robin Fuchs-Young
- Department of Molecular and Cellular Medicine, Texas A&M Health Science Center, Bryan, TX 77807, USA
- Correspondence: ; Tel.: +1-979-436-0778
| |
Collapse
|
6
|
Hulen J, Kenny D, Black R, Hallgren J, Hammond KG, Bredahl EC, Wickramasekara RN, Abel PW, Stessman HAF. KMT5B is required for early motor development. Front Genet 2022; 13:901228. [PMID: 36035149 PMCID: PMC9411648 DOI: 10.3389/fgene.2022.901228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 07/11/2022] [Indexed: 11/13/2022] Open
Abstract
Disruptive variants in lysine methyl transferase 5B (KMT5B/SUV4-20H1) have been identified as likely-pathogenic among humans with neurodevelopmental phenotypes including motor deficits (i.e., hypotonia and motor delay). However, the role that this enzyme plays in early motor development is largely unknown. Using a Kmt5b gene trap mouse model, we assessed neuromuscular strength, skeletal muscle weight (i.e., muscle mass), neuromuscular junction (NMJ) structure, and myofiber type, size, and distribution. Tests were performed over developmental time (postnatal days 17 and 44) to represent postnatal versus adult structures in slow- and fast-twitch muscle types. Prior to the onset of puberty, slow-twitch muscle weight was significantly reduced in heterozygous compared to wild-type males but not females. At the young adult stage, we identified decreased neuromuscular strength, decreased skeletal muscle weights (both slow- and fast-twitch), increased NMJ fragmentation (in slow-twitch muscle), and smaller myofibers in both sexes. We conclude that Kmt5b haploinsufficiency results in a skeletal muscle developmental deficit causing reduced muscle mass and body weight.
Collapse
Affiliation(s)
- Jason Hulen
- Department of Pharmacology and Neuroscience, School of Medicine, Creighton University, Omaha, NE, United States
| | - Dorothy Kenny
- Department of Pharmacology and Neuroscience, School of Medicine, Creighton University, Omaha, NE, United States
| | - Rebecca Black
- Department of Pharmacology and Neuroscience, School of Medicine, Creighton University, Omaha, NE, United States
| | - Jodi Hallgren
- Department of Pharmacology and Neuroscience, School of Medicine, Creighton University, Omaha, NE, United States
| | - Kelley G. Hammond
- Department of Exercise Science, College of Arts and Sciences, Creighton University, Omaha, NE, United States
| | - Eric C. Bredahl
- Department of Exercise Science, College of Arts and Sciences, Creighton University, Omaha, NE, United States
| | - Rochelle N. Wickramasekara
- Department of Pharmacology and Neuroscience, School of Medicine, Creighton University, Omaha, NE, United States
- Molecular Diagnostic Laboratory, Boys Town National Research Hospital, Omaha, NE, United States
| | - Peter W. Abel
- Department of Pharmacology and Neuroscience, School of Medicine, Creighton University, Omaha, NE, United States
| | - Holly A. F. Stessman
- Department of Pharmacology and Neuroscience, School of Medicine, Creighton University, Omaha, NE, United States
| |
Collapse
|
7
|
Zuccaro E, Piol D, Basso M, Pennuto M. Motor Neuron Diseases and Neuroprotective Peptides: A Closer Look to Neurons. Front Aging Neurosci 2021; 13:723871. [PMID: 34603008 PMCID: PMC8484953 DOI: 10.3389/fnagi.2021.723871] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 08/26/2021] [Indexed: 12/02/2022] Open
Abstract
Motor neurons (MNs) are specialized neurons responsible for muscle contraction that specifically degenerate in motor neuron diseases (MNDs), such as amyotrophic lateral sclerosis (ALS), spinal and bulbar muscular atrophy (SBMA), and spinal muscular atrophy (SMA). Distinct classes of MNs degenerate at different rates in disease, with a particular class named fast-fatigable MNs (FF-MNs) degenerating first. The etiology behind the selective vulnerability of FF-MNs is still largely under investigation. Among the different strategies to target MNs, the administration of protective neuropeptides is one of the potential therapeutic interventions. Pituitary adenylate cyclase-activating polypeptide (PACAP) is a neuropeptide with beneficial effects in many neurodegenerative diseases, including Alzheimer’s disease, Parkinson’s disease, and more recently SBMA. Another neuropeptide that has a neurotrophic effect on MNs is insulin-like growth factor 1 (IGF-1), also known as somatomedin C. These two peptides are implicated in the activation of neuroprotective pathways exploitable in the amelioration of pathological outcomes related to MNDs.
Collapse
Affiliation(s)
- Emanuela Zuccaro
- Department of Biomedical Sciences, University of Padua, Padua, Italy.,Veneto Institute of Molecular Medicine, Padua, Italy.,Padova Neuroscience Center, Padua, Italy
| | - Diana Piol
- Department of Biomedical Sciences, University of Padua, Padua, Italy
| | - Manuela Basso
- Department of Cellular, Computational and Integrative Biology - CIBIO, University of Trento, Trento, Italy
| | - Maria Pennuto
- Department of Biomedical Sciences, University of Padua, Padua, Italy.,Veneto Institute of Molecular Medicine, Padua, Italy.,Padova Neuroscience Center, Padua, Italy
| |
Collapse
|
8
|
Takanezawa Y, Tanabe S, Kato D, Ozeki R, Komoda M, Suzuki T, Baba H, Muramatsu R. Microglial ASD-related genes are involved in oligodendrocyte differentiation. Sci Rep 2021; 11:17825. [PMID: 34497307 PMCID: PMC8426463 DOI: 10.1038/s41598-021-97257-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 08/17/2021] [Indexed: 11/17/2022] Open
Abstract
Autism spectrum disorders (ASD) are associated with mutations of chromodomain-helicase DNA-binding protein 8 (Chd8) and tuberous sclerosis complex 2 (Tsc2). Although these ASD-related genes are detected in glial cells such as microglia, the effect of Chd8 or Tsc2 deficiency on microglial functions and microglia-mediated brain development remains unclear. In this study, we investigated the role of microglial Chd8 and Tsc2 in cytokine expression, phagocytosis activity, and neuro/gliogenesis from neural stem cells (NSCs) in vitro. Chd8 or Tsc2 knockdown in microglia reduced insulin-like growth factor-1(Igf1) expression under lipopolysaccharide (LPS) stimulation. In addition, phagocytosis activity was inhibited by Tsc2 deficiency, microglia-mediated oligodendrocyte development was inhibited, in particular, the differentiation of oligodendrocyte precursor cells to oligodendrocytes was prevented by Chd8 or Tsc2 deficiency. These results suggest that ASD-related gene expression in microglia is involved in oligodendrocyte differentiation, which may contribute to the white matter pathology relating to ASD.
Collapse
Affiliation(s)
- Yuta Takanezawa
- Department of Molecular Pharmacology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo, 187-8502, Japan
- Department of Molecular Neurobiology, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, 192-0392, Japan
| | - Shogo Tanabe
- Department of Molecular Pharmacology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo, 187-8502, Japan.
| | - Daiki Kato
- Department of Molecular Pharmacology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo, 187-8502, Japan
- Department of Medical and Life Science, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba, 278-8510, Japan
| | - Rie Ozeki
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba, Japan
| | - Masayo Komoda
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba, Japan
| | - Tatsunori Suzuki
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba, Japan
| | - Hiroko Baba
- Department of Molecular Neurobiology, Tokyo University of Pharmacy and Life Sciences, Hachioji, Tokyo, 192-0392, Japan
| | - Rieko Muramatsu
- Department of Molecular Pharmacology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo, 187-8502, Japan.
| |
Collapse
|
9
|
Song XT, Zhang JN, Zhao DW, Zhai YF, Lu Q, Qi MY, Lu MH, Deng SL, Han HB, Yang XQ, Yao YC. Molecular cloning, expression, and functional features of IGF1 splice variants in sheep. Endocr Connect 2021; 10:980-994. [PMID: 34319906 PMCID: PMC8428077 DOI: 10.1530/ec-21-0181] [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: 07/20/2021] [Accepted: 07/28/2021] [Indexed: 11/08/2022]
Abstract
Insulin-like growth factor 1 (IGF1), also known as somatomedin C, is essential for the regulation of animal growth and development. In many species, the IGF1 gene can be alternatively spliced into multiple transcripts, encoding different pre-pro-IGF1 proteins. However, the exact alternative splicing patterns of IGF1 and the sequence information of different splice variants in sheep are still unclear. In this study, four splice variants (class 1-Ea, class 1-Eb, class 2-Ea, and class 2-Eb) were obtained, but no IGF1 Ec, similar to that found in other species, was discovered. Bioinformatics analysis showed that the four splice variants shared the same mature peptide (70 amino acids) and possessed distinct signal peptides and E peptides. Tissue expression analysis indicated that the four splice variants were broadly expressed in all tested tissues and were most abundantly expressed in the liver. In most tissues and stages, the expression of class 1-Ea was highest, and the expression of other splice variants was low. Overall, levels of the four IGF1 splice variants at the fetal and lamb stages were higher than those at the adult stage. Overexpression of the four splice variants significantly increased fibroblast proliferation and inhibited apoptosis (P < 0.05). In contrast, silencing IGF1 Ea or IGF1 Eb with siRNA significantly inhibited proliferation and promoted apoptosis (P < 0.05). Among the four splice variants, class 1-Ea had a more evident effect on cell proliferation and apoptosis. In summary, the four ovine IGF1 splice variants have different structures and expression patterns and might have different biological functions.
Collapse
Affiliation(s)
- Xu-Ting Song
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
| | - Jia-Nan Zhang
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
| | - Duo-Wei Zhao
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
| | - Yu-Fei Zhai
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
| | - Qi Lu
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
| | - Mei-Yu Qi
- Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Sciences, Harbin, China
| | - Ming-Hai Lu
- Department of Animal Science, Heilongjiang State Farms Science Technology Vocational College, Harbin, China
| | - Shou-Long Deng
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China
| | - Hong-Bing Han
- Beijing Key Laboratory of Animal Genetic Improvement, China Agricultural University, Beijing, China
| | - Xiu-Qin Yang
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
- Correspondence should be addressed to Y-C Yao or X-Q Yang: or
| | - Yu-Chang Yao
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Education Department of Heilongjiang Province, College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
- Correspondence should be addressed to Y-C Yao or X-Q Yang: or
| |
Collapse
|
10
|
Insulin-Like Growth Factor 1 (IGF-1) Signaling in Glucose Metabolism in Colorectal Cancer. Int J Mol Sci 2021; 22:ijms22126434. [PMID: 34208601 PMCID: PMC8234711 DOI: 10.3390/ijms22126434] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/04/2021] [Accepted: 06/14/2021] [Indexed: 02/07/2023] Open
Abstract
Colorectal cancer (CRC) is one of the most common aggressive carcinoma types worldwide, characterized by unfavorable curative effect and poor prognosis. Epidemiological data re-vealed that CRC risk is increased in patients with metabolic syndrome (MetS) and its serum components (e.g., hyperglycemia). High glycemic index diets, which chronically raise post-prandial blood glucose, may at least in part increase colon cancer risk via the insulin/insulin-like growth factor 1 (IGF-1) signaling pathway. However, the underlying mechanisms linking IGF-1 and MetS are still poorly understood. Hyperactivated glucose uptake and aerobic glycolysis (the Warburg effect) are considered as a one of six hallmarks of cancer, including CRC. However, the role of insulin/IGF-1 signaling during the acquisition of the Warburg metabolic phenotypes by CRC cells is still poorly understood. It most likely results from the interaction of multiple processes, directly or indirectly regulated by IGF-1, such as activation of PI3K/Akt/mTORC, and Raf/MAPK signaling pathways, activation of glucose transporters (e.g., GLUT1), activation of key glycolytic enzymes (e.g., LDHA, LDH5, HK II, and PFKFB3), aberrant expression of the oncogenes (e.g., MYC, and KRAS) and/or overexpression of signaling proteins (e.g., HIF-1, TGF-β1, PI3K, ERK, Akt, and mTOR). This review describes the role of IGF-1 in glucose metabolism in physiology and colorectal carcinogenesis, including the role of the insulin/IGF system in the Warburg effect. Furthermore, current therapeutic strategies aimed at repairing impaired glucose metabolism in CRC are indicated.
Collapse
|
11
|
Ngo MHT, Jeng HY, Kuo YC, Nanda JD, Brahmadhi A, Ling TY, Chang TS, Huang YH. The Role of IGF/IGF-1R Signaling in Hepatocellular Carcinomas: Stemness-Related Properties and Drug Resistance. Int J Mol Sci 2021; 22:ijms22041931. [PMID: 33669204 PMCID: PMC7919800 DOI: 10.3390/ijms22041931] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/10/2021] [Accepted: 02/10/2021] [Indexed: 12/12/2022] Open
Abstract
Insulin-like Growth Factor (IGF)/IGF-1 Receptor (IGF-1R) signaling is known to regulate stem cell pluripotency and differentiation to trigger cell proliferation, organ development, and tissue regeneration during embryonic development. Unbalanced IGF/IGF-1R signaling can promote cancer cell proliferation and activate cancer reprogramming in tumor tissues, especially in the liver. Hepatocellular carcinoma (HCC) is one of the leading causes of cancer-related death, with a high incidence and mortality rate in Asia. Most patients with advanced HCC develop tyrosine kinase inhibitor (TKI)-refractoriness after receiving TKI treatment. Dysregulation of IGF/IGF-1R signaling in HCC may activate expression of cancer stemness that leads to TKI refractoriness and tumor recurrence. In this review, we summarize the evidence for dysregulated IGF/IGF-1R signaling especially in hepatitis B virus (HBV)-associated HCC. The regulation of cancer stemness expression and drug resistance will be highlighted. Current clinical treatments and potential therapies targeting IGF/IGF-1R signaling for the treatment of HCC will be discussed.
Collapse
Affiliation(s)
- Mai-Huong Thi Ngo
- International PhD Program for Cell Therapy and Regeneration Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan; (M.-H.T.N.); (J.D.N.); (A.B.)
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Han-Yin Jeng
- Research Center of Cell Therapy and Regeneration Medicine, Taipei Medical University, Taipei 11031, Taiwan; (H.-Y.J.); (Y.-C.K.)
| | - Yung-Che Kuo
- Research Center of Cell Therapy and Regeneration Medicine, Taipei Medical University, Taipei 11031, Taiwan; (H.-Y.J.); (Y.-C.K.)
| | - Josephine Diony Nanda
- International PhD Program for Cell Therapy and Regeneration Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan; (M.-H.T.N.); (J.D.N.); (A.B.)
| | - Ageng Brahmadhi
- International PhD Program for Cell Therapy and Regeneration Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan; (M.-H.T.N.); (J.D.N.); (A.B.)
| | - Thai-Yen Ling
- Department and Graduate Institute of Pharmacology, National Taiwan University, Taipei 11031, Taiwan
- Correspondence: (T.-Y.L.); (T.-S.C.); (Y.-H.H.); Tel.: +886-2-2312-3456 (ext. 8-8322) (T.-Y.L.); +886-5-3621-000 (ext. 2242) (T.-S.C.); +886-2-2736-1661 (ext. 3150) (Y.-H.H.)
| | - Te-Sheng Chang
- School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan 33382, Taiwan
- Division of Internal Medicine, Department of Gastroenterology and Hepatology, Chang Gung Memorial Hospital, Chiayi 61363, Taiwan
- Correspondence: (T.-Y.L.); (T.-S.C.); (Y.-H.H.); Tel.: +886-2-2312-3456 (ext. 8-8322) (T.-Y.L.); +886-5-3621-000 (ext. 2242) (T.-S.C.); +886-2-2736-1661 (ext. 3150) (Y.-H.H.)
| | - Yen-Hua Huang
- International PhD Program for Cell Therapy and Regeneration Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan; (M.-H.T.N.); (J.D.N.); (A.B.)
- Department of Biochemistry and Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Research Center of Cell Therapy and Regeneration Medicine, Taipei Medical University, Taipei 11031, Taiwan; (H.-Y.J.); (Y.-C.K.)
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Center for Reproductive Medicine, Taipei Medical University Hospital, Taipei 11031, Taiwan
- Comprehensive Cancer Center, Taipei Medical University, Taipei 11031, Taiwan
- Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei 11031, Taiwan
- PhD Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
- Correspondence: (T.-Y.L.); (T.-S.C.); (Y.-H.H.); Tel.: +886-2-2312-3456 (ext. 8-8322) (T.-Y.L.); +886-5-3621-000 (ext. 2242) (T.-S.C.); +886-2-2736-1661 (ext. 3150) (Y.-H.H.)
| |
Collapse
|
12
|
Role of Alternatively Spliced Messenger RNA (mRNA) Isoforms of the Insulin-Like Growth Factor 1 (IGF1) in Selected Human Tumors. Int J Mol Sci 2020; 21:ijms21196995. [PMID: 32977489 PMCID: PMC7582825 DOI: 10.3390/ijms21196995] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 09/20/2020] [Accepted: 09/21/2020] [Indexed: 02/07/2023] Open
Abstract
Insulin-like growth factor 1 (IGF1) is a key regulator of tissue growth and development that is also implicated in the initiation and progression of various cancers. The human IGF1 gene contains six exons and five long introns, the transcription of which is controlled by two promoters (P1 and P2). Alternate promoter usage, as well as alternative splicing (AS) of IGF1, results in the expression of six various variants (isoforms) of mRNA, i.e., IA, IB, IC, IIA, IIB, and IIC. A mature 70-kDa IGF1 protein is coded only by exons 3 and 4, while exons 5 and 6 are alternatively spliced code for the three C-terminal E peptides: Ea (exon 6), Eb (exon 5), and Ec (fragments of exons 5 and 6). The most abundant of those transcripts is IGF1Ea, followed by IGF1Eb and IGF1Ec (also known as mechano-growth factor, MGF). The presence of different IGF1 transcripts suggests tissue-specific auto- and/or paracrine action, as well as separate regulation of both of these gene promoters. In physiology, the role of different IGF1 mRNA isoforms and pro-peptides is best recognized in skeletal muscle tissue. Their functions include the development and regeneration of muscles, as well as maintenance of proper muscle mass. In turn, in nervous tissue, a neuroprotective function of short peptides, produced as a result of IGF1 expression and characterized by significant blood-brain barrier penetrance, has been described and could be a potential therapeutic target. When it comes to the regulation of carcinogenesis, the potential biological role of different var iants of IGF1 mRNAs and pro-peptides is also intensively studied. This review highlights the role of IGF1 isoform expression (mRNAs, proteins) in physiology and different types of human tumors (e.g., breast cancer, cervical cancer, colorectal cancer, osteosarcoma, prostate and thyroid cancers), as well as mechanisms of IGF1 spliced variants involvement in tumor biology.
Collapse
|
13
|
Cardilli DJ, Sousa-Oliveira K, Franchi-João C, Azevedo-Voorwald F, Machado-Silva MA, Oliveira JA, Sánchez-Calabuig MJ, Toniollo GH, Pérez-Gutiérrez JF. "Immunolocalization and effect of low concentrations of Insulin like growth factor-1 (IGF-1) in the canine ovary". Vet Med Sci 2020; 7:46-56. [PMID: 32894655 PMCID: PMC7840201 DOI: 10.1002/vms3.347] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 08/12/2020] [Accepted: 08/16/2020] [Indexed: 12/19/2022] Open
Abstract
Insulin like growth factor‐1 (IGF‐1) plays an important role in the regulation of ovarian function. Despite its extensive study in several species, there is a paucity of information about IGF‐1`s function and localization in the canine ovary. The aim of the present study was to assess the effect of IGF‐1 on oocyte nuclear maturation and to immunolocalize the IGF‐1 and its receptor (IGF‐1R) in the ovary. Cumulus‐oocyte complexes (COCs) were obtained from 34 bitches. The COCs from each bitch were incubated in TCM 199‐HEPES in the absence (n = 199) or presence (n = 204) of 100 ng/ml IGF‐1 for 96 hr at 38ºC in 5% CO2, stained and evaluated for nuclear maturation by fluorescence microscopy. The results showed that the addition of IGF‐1 did not have an effect (p ˃ 0.05) on the nuclear maturation under these conditions. The immunohistochemical study revealed nuclear and cytoplasmic staining for IGF‐1 and IGF‐1R, respectively. Both were localized in all ovarian structures including the corpus luteum, but not in the granulosa cells from primordial follicles. In addition, IGF‐1 was not localized in the oocytes in tertiary follicles. The results obtained show the presence of IGF‐1 through the stages of follicular growth and in the corpus luteum of the canine ovary. However, its role on oocyte nuclear maturation could not be demonstrated.
Collapse
Affiliation(s)
- Diogo J Cardilli
- Departamento Medicina y Cirugía Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain
| | - Kellen Sousa-Oliveira
- Departamento de Zootecnia. Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia-GO, Brazil
| | - Carolina Franchi-João
- Instituto de Medicina Veterinária da Universidade Federal do Pará, Castanhal-PA, Brazil
| | - Faviana Azevedo-Voorwald
- Faculdade de Ciências Agrârias e Veterinârias, Universidade Estadual Paulista, Jaboticabal, Brazil
| | - Marco A Machado-Silva
- Departamento de Medicina Veterinária. Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia-GO, Brazil
| | - João Ademir Oliveira
- Departamento de Ciências Exatas da Faculdade de Ciências Agrárias e Veterinárias Faculdade de CiênciasAgrárias e Veterinárias, Universidade Estadual Paulista, Jaboticabal, Brazil
| | - María Jesús Sánchez-Calabuig
- Departamento Medicina y Cirugía Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain
| | - Gilson H Toniollo
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Faculdade de CiênciasAgrárias e Veterinárias da, Universidade Estadual Paulista, Jaboticabal, Brazil
| | - José F Pérez-Gutiérrez
- Departamento Medicina y Cirugía Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain
| |
Collapse
|
14
|
Barth E, Sieber P, Stark H, Schuster S. Robustness during Aging-Molecular Biological and Physiological Aspects. Cells 2020; 9:E1862. [PMID: 32784503 PMCID: PMC7465392 DOI: 10.3390/cells9081862] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/27/2020] [Accepted: 08/05/2020] [Indexed: 12/13/2022] Open
Abstract
Understanding the process of aging is still an important challenge to enable healthy aging and to prevent age-related diseases. Most studies in age research investigate the decline in organ functionality and gene activity with age. The focus on decline can even be considered a paradigm in that field. However, there are certain aspects that remain surprisingly stable and keep the organism robust. Here, we present and discuss various properties of robust behavior during human and animal aging, including physiological and molecular biological features, such as the hematocrit, body temperature, immunity against infectious diseases and others. We examine, in the context of robustness, the different theories of how aging occurs. We regard the role of aging in the light of evolution.
Collapse
Affiliation(s)
- Emanuel Barth
- RNA Bioinformatics/High Throughput Analysis, Faculty of Mathematics and Computer Science, Friedrich Schiller University Jena, 07743 Jena, Germany;
| | - Patricia Sieber
- Matthias Schleiden Institute, Bioinformatics, Friedrich Schiller University Jena, 07743 Jena, Germany;
| | - Heiko Stark
- Institute of Zoology and Evolutionary Research with Phyletic Museum, Friedrich Schiller University Jena, 07743 Jena, Germany;
| | - Stefan Schuster
- Matthias Schleiden Institute, Bioinformatics, Friedrich Schiller University Jena, 07743 Jena, Germany;
| |
Collapse
|
15
|
Kantake M, Ikeda N, Nakaoka H, Ohkawa N, Tanaka T, Miyabayashi K, Shoji H, Shimizu T. IGF1 gene is epigenetically activated in preterm infants with intrauterine growth restriction. Clin Epigenetics 2020; 12:108. [PMID: 32678007 PMCID: PMC7364555 DOI: 10.1186/s13148-020-00901-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 07/08/2020] [Indexed: 11/10/2022] Open
Abstract
Background IGF1 is a key molecule in the regulation of growth and metabolism. Low IGF1 secretion is known to cause growth restriction in childhood, as well as deregulated lipid metabolism, cardiovascular disease, and diabetes in adulthood. The IGF1 gene P2 promoter is highly methylated, resulting in low secretion of IGF1 in small infants and children. However, it is unknown when this methylation occurs. The aim of study was to clarify the point when this epigenetic program occurs during intrauterine development. We analyzed 56 preterm infants born before 32 weeks of gestation, including 19 intrauterine growth restriction (IUGR) infants whose birth weights were lower than − 2SD calculated by the Japanese datasets. We extracted genomic DNA from whole blood at birth; methylation of the six CpG sites in the IGF1 P2 promoter was analyzed by the bisulfite amplicon method using the MiSeq platform. Results In contrast to term infants and children, the methylation of all six CpG sites positively correlated with body weight and body length at birth. IGF1 P2 promoter methylation levels were significantly reduced in all six CpG sites in infants with IUGR. Conclusions These findings indicated that the IGF1 gene is epigenetically activated before 32 weeks of gestation in infants with IUGR and that the activated gene may become suppressed after this time point. This study may provide new insights to prevent the onset of adult diseases and to aid in nutritional management for preterm birth infants in neonatal intensive care units.
Collapse
Affiliation(s)
- Masato Kantake
- Neonatal Medical Center, Juntendo University Shizuoka Hospital, 1192 Nagaoka, Izunokuni, Shizuoka, 410-2295, Japan.
| | - Naho Ikeda
- Neonatal Medical Center, Juntendo University Shizuoka Hospital, 1192 Nagaoka, Izunokuni, Shizuoka, 410-2295, Japan
| | - Hirofumi Nakaoka
- Human Genetics Laboratory, Department of Genomics and Evolutionary Biology, National Institute of Genetics, 1111 Yata, Mishima, Shizuoka, 411-8540, Japan.,Department of Cancer Genome Research, Sasaki Institute, Sasaki Foundation, 2-2 Kandasurugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
| | - Natsuki Ohkawa
- Neonatal Medical Center, Juntendo University Shizuoka Hospital, 1192 Nagaoka, Izunokuni, Shizuoka, 410-2295, Japan
| | - Toshitaka Tanaka
- Perinatal Medical Center, Juntendo University Shizuoka Hospital, 1192 Nagaoka, Izunokuni, Shizuoka, 410-2295, Japan
| | - Kazuki Miyabayashi
- Neonatal Medical Center, Juntendo University Shizuoka Hospital, 1192 Nagaoka, Izunokuni, Shizuoka, 410-2295, Japan
| | - Hiromichi Shoji
- Department of Pediatrics and Adolescent Medicine, Juntendo University, 3-1-3 Hongo, Bunkyo-ku, Tokyo, 113-8431, Japan
| | - Toshiaki Shimizu
- Department of Pediatrics and Adolescent Medicine, Juntendo University, 3-1-3 Hongo, Bunkyo-ku, Tokyo, 113-8431, Japan
| |
Collapse
|
16
|
Hernandez DM, Kang JH, Choudhury M, Andrianifahanana M, Yin X, Limper AH, Leof EB. IPF pathogenesis is dependent upon TGFβ induction of IGF-1. FASEB J 2020; 34:5363-5388. [PMID: 32067272 PMCID: PMC7136152 DOI: 10.1096/fj.201901719rr] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 02/03/2020] [Accepted: 02/05/2020] [Indexed: 12/13/2022]
Abstract
Pathogenic fibrotic diseases, including idiopathic pulmonary fibrosis (IPF), have some of the worst prognoses and affect millions of people worldwide. With unclear etiology and minimally effective therapies, two-thirds of IPF patients die within 2-5 years from this progressive interstitial lung disease. Transforming Growth Factor Beta (TGFβ) and insulin-like growth factor-1 (IGF-1) are known to promote fibrosis; however, myofibroblast specific upregulation of IGF-1 in the initiation and progression of TGFβ-induced fibrogenesis and IPF have remained unexplored. To address this, the current study (1) documents the upregulation of IGF-1 via TGFβ in myofibroblasts and fibrotic lung tissue, as well as its correlation with decreased pulmonary function in advanced IPF; (2) identifies IGF-1's C1 promoter as mediating the increase in IGF-1 transcription by TGFβ in pulmonary fibroblasts; (3) determines that SMAD2 and mTOR signaling are required for TGFβ-dependent Igf-1 expression in myofibroblasts; (4) demonstrates IGF-1R activation is essential to support TGFβ-driven profibrotic myofibroblast functions and excessive wound healing; and (5) establishes the effectiveness of slowing the progression of murine lung fibrosis with the IGF-1R inhibitor OSI-906. These findings expand our knowledge of IGF-1's role as a novel fibrotic-switch, bringing us one step closer to understanding the complex biological mechanisms responsible for fibrotic diseases and developing effective therapies.
Collapse
Affiliation(s)
- Danielle M. Hernandez
- Mayo Clinic Graduate School of Biomedical Sciences, Biochemistry & Molecular Biology Department, Mayo Clinic College of Medicine and Science, Rochester, MN 55905, USA
- Thoracic Disease Research Unit, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
- Current Address: Department of Neurosurgery, Masonic Cancer Center, University of Minnesota Twin Cities, Minneapolis, MN 55455, USA
| | - Jeong-Han Kang
- Thoracic Disease Research Unit, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
- Current Address: Department of Laboratory Medicine and Pathology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
| | - Malay Choudhury
- Thoracic Disease Research Unit, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
| | - Mahefatiana Andrianifahanana
- Thoracic Disease Research Unit, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
| | - Xueqian Yin
- Thoracic Disease Research Unit, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
- Current Address: Department of Molecular Medicine, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
| | - Andrew H. Limper
- Thoracic Disease Research Unit, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
| | - Edward B. Leof
- Thoracic Disease Research Unit, Division of Pulmonary and Critical Care Medicine, Department of Medicine, Mayo Clinic College of Medicine, Rochester, MN 55905, USA
| |
Collapse
|
17
|
Roberston MJ, Raghunathan S, Potaman VN, Zhang F, Stewart MD, McConnell BK, Schwartz RJ. CRISPR-Cas9-induced IGF1 gene activation as a tool for enhancing muscle differentiation via multiple isoform expression. FASEB J 2020; 34:555-570. [PMID: 31914652 PMCID: PMC6956731 DOI: 10.1096/fj.201901107rr] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 10/01/2019] [Accepted: 10/08/2019] [Indexed: 12/25/2022]
Abstract
Muscle wasting, or muscle atrophy, can occur with age, injury, and disease; it affects the quality of life and complicates treatment. Insulin-like growth factor 1 (IGF1) is a key positive regulator of muscle mass. The IGF1/Igf1 gene encodes multiple protein isoforms that differ in tissue expression, potency, and function, particularly in cellular proliferation and differentiation, as well as in systemic versus localized signaling. Genome engineering is a novel strategy for increasing gene expression and has the potential to recapitulate the diverse biology seen in IGF1 signaling through the overexpression of multiple IGF1 isoforms. Using a CRISPR-Cas9 gene activation approach, we showed that the expression of multiple IGF1 or Igf1 mRNA variants can be increased in human and mouse skeletal muscle myoblast cell lines using a single-guide RNA (sgRNA). We found increased IGF1 protein levels in the cell culture media and increased cellular phosphorylation of AKT1, the main effector of IGF1 signaling. We also showed that the expression of Class 1 or Class 2 mRNA variants can be selectively increased by changing the sgRNA target location. The expression of multiple IGF1 or Igf1 mRNA transcript variants in human and mouse skeletal muscle myoblasts promoted myotube differentiation and prevented dexamethasone-induced atrophy in myotubes in vitro. Our findings suggest that this novel approach for enhancing IGF1 signaling has potential therapeutic applications for treating skeletal muscle atrophy.
Collapse
Affiliation(s)
- Matthew J. Roberston
- Dan L. Duncan Cancer Center, Advanced Technology Core, Alkek Center for Molecular Discovery, Baylor College of Medicine, Houston, TX, 77030, USA
- Scientific Stem Cell, Texas Heart Institute, Houston, TX, 77030, USA
| | - Suchi Raghunathan
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, 77204-5037, USA
| | | | - Fan Zhang
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, 77204-5037, USA
| | - M. David Stewart
- Department of Biology and Biochemistry, University of Houston, Houston, TX, 77204-5001, USA
| | - Bradley K. McConnell
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, Houston, TX, 77204-5037, USA
| | - Robert J. Schwartz
- Scientific Stem Cell, Texas Heart Institute, Houston, TX, 77030, USA
- Department of Biology and Biochemistry, University of Houston, Houston, TX, 77204-5001, USA
| |
Collapse
|
18
|
LEVITON A, ALLRED EN, FICHOROVA RN, VANDERVEEN DK, O’SHEA TM, KUBAN K, DAMMANN O. Early Postnatal IGF-1 and IGFBP-1 Blood Levels in Extremely Preterm Infants: Relationships with Indicators of Placental Insufficiency and with Systemic Inflammation. Am J Perinatol 2019; 36:1442-1452. [PMID: 30685870 PMCID: PMC7252600 DOI: 10.1055/s-0038-1677472] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVE To evaluate to what extent indicators of placenta insufficiency are associated with low concentrations of insulin-like growth factor 1 (IGF-1) and IGF-1-binding protein-1 (IGFBP-1) in neonatal blood, and to what extent the concentrations of these growth factors are associated with concentrations of proteins with inflammatory, neurotrophic, or angiogenic properties. STUDY DESIGN Using multiplex immunoassays, we measured the concentrations of IGF-1 and IGFBP-1, as well as 25 other proteins in blood spots collected weekly from ≥ 880 infants born before the 28th week of gestation, and sought correlates of concentrations in the top and bottom quartiles for gestational age and day the specimen was collected. RESULTS Medically indicated delivery and severe fetal growth restriction (sFGR) were associated with low concentrations of IGF-1 on the first postnatal day and with high concentrations of IGFBP-1 on almost all days. Elevated concentrations of IGF-1 and IGFBP-1 were accompanied by elevated concentrations of many other proteins with inflammatory, neurotrophic, or angiogenic properties. CONCLUSION Disorders associated with impaired placenta implantation and sFGR appear to account for a relative paucity of IGF-1 on the first postnatal day. Elevated concentrations of IGF-1 and especially IGFBP-1 were associated with same-day elevated concentrations of inflammatory, neurotrophic, and angiogenic proteins.
Collapse
Affiliation(s)
- Alan LEVITON
- Departments of Neurology, Boston Children’s Hospital and Harvard Medical School, Boston, MA, USA
| | - Elizabeth N. ALLRED
- Departments of Neurology, Boston Children’s Hospital and Harvard Medical School, Boston, MA, USA
| | - Raina N. FICHOROVA
- Departments of Obstetrics, Gynecology, and Reproductive Biology, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, USA
| | - Deborah K. VANDERVEEN
- Departments of Ophthalmology, Boston Children’s Hospital and Harvard Medical School, Boston, MA, USA
| | - T. Michael O’SHEA
- Department of Pediatrics, University of North Carolina, Chapel Hill, NC
| | - Karl KUBAN
- Division of Neurology, Department of Pediatrics, Boston Medical Center and Boston University, Boston, MA, USA
| | - Olaf DAMMANN
- Department of Public Health and Community Medicine, Tufts University School of Medicine, Boston, MA, USA,Perinatal Neuropidemiology Unit, Hannover Medical School, Hannover, Germany
| | | |
Collapse
|
19
|
Tan L, Bogush N, Naib H, Perry J, Calvert JW, Martin DIK, Graham RM, Naqvi N, Husain A. Redox activation of JNK2α2 mediates thyroid hormone-stimulated proliferation of neonatal murine cardiomyocytes. Sci Rep 2019; 9:17731. [PMID: 31776360 PMCID: PMC6881338 DOI: 10.1038/s41598-019-53705-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 10/31/2019] [Indexed: 12/17/2022] Open
Abstract
Mitochondria-generated reactive oxygen species (mROS) are frequently associated with DNA damage and cell cycle arrest, but physiological increases in mROS serve to regulate specific cell functions. T3 is a major regulator of mROS, including hydrogen peroxide (H2O2). Here we show that exogenous thyroid hormone (T3) administration increases cardiomyocyte numbers in neonatal murine hearts. The mechanism involves signaling by mitochondria-generated H2O2 (mH2O2) acting via the redox sensor, peroxiredoxin-1, a thiol peroxidase with high reactivity towards H2O2 that activates c-Jun N-terminal kinase-2α2 (JNK2α2). JNK2α2, a relatively rare member of the JNK family of mitogen-activated protein kinases (MAPK), phosphorylates c-Jun, a component of the activator protein 1 (AP-1) early response transcription factor, resulting in enhanced insulin-like growth factor 1 (IGF-1) expression and activation of proliferative ERK1/2 signaling. This non-canonical mechanism of MAPK activation couples T3 actions on mitochondria to cell cycle activation. Although T3 is regarded as a maturation factor for cardiomyocytes, these studies identify a novel redox pathway that is permissive for T3-mediated cardiomyocyte proliferation—this because of the expression of a pro-proliferative JNK isoform that results in growth factor elaboration and ERK1/2 cell cycle activation.
Collapse
Affiliation(s)
- Lin Tan
- Department of Medicine (Cardiology), Emory University School of Medicine, Atlanta, Georgia, USA
| | - Nikolay Bogush
- Department of Medicine (Cardiology), Emory University School of Medicine, Atlanta, Georgia, USA
| | - Hussain Naib
- Department of Medicine (Cardiology), Emory University School of Medicine, Atlanta, Georgia, USA
| | - Jennifer Perry
- Department of Animal Resources, Emory University School of Medicine, Atlanta, Georgia, USA
| | - John W Calvert
- Department of Surgery, Emory University School of Medicine, Atlanta, Georgia, USA
| | - David I K Martin
- Children's Hospital Oakland Research Institute, Oakland, California, USA
| | - Robert M Graham
- Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales, Australia
| | - Nawazish Naqvi
- Department of Medicine (Cardiology), Emory University School of Medicine, Atlanta, Georgia, USA.
| | - Ahsan Husain
- Department of Medicine (Cardiology), Emory University School of Medicine, Atlanta, Georgia, USA.
| |
Collapse
|
20
|
Oberbauer AM, Belanger JM, Famula TR. A Review of the Impact of Neuter Status on Expression of Inherited Conditions in Dogs. Front Vet Sci 2019; 6:397. [PMID: 31799281 PMCID: PMC6863800 DOI: 10.3389/fvets.2019.00397] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 10/24/2019] [Indexed: 12/19/2022] Open
Abstract
Gonadectomy is an important reproductive management tool employed in many countries, and is highly prevalent in the US with an estimated 85% of dogs being neutered. Despite the societal benefits in pet population control, negative associations between neuter status, and health conditions have been reported in recent years. Most particularly observed are the consequences of early age neutering. Knowing that different physiological systems rely upon gonadal steroids during development and physiological maintenance, studies have been undertaken to assess the impact of neuter status on multiple body and organ systems. For some inherited conditions, neutering is associated with an increased risk of expression. Neutering has also been associated with altered metabolism and a predisposition for weight gain in dogs, which may confound the detected risk association between neutering and disease expression. This review summarizes the effects of neutering on cancer, orthopedic, and immune disorders in the dog and also explores the potentially exacerbating factor of body weight.
Collapse
Affiliation(s)
- Anita M Oberbauer
- Department of Animal Science, University of California, Davis, Davis, CA, United States
| | - Janelle M Belanger
- Department of Animal Science, University of California, Davis, Davis, CA, United States
| | - Thomas R Famula
- Department of Animal Science, University of California, Davis, Davis, CA, United States
| |
Collapse
|
21
|
Vassilakos G, Barton ER. Insulin-Like Growth Factor I Regulation and Its Actions in Skeletal Muscle. Compr Physiol 2018; 9:413-438. [PMID: 30549022 DOI: 10.1002/cphy.c180010] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The insulin-like growth factor (IGF) pathway is essential for promoting growth and survival of virtually all tissues. It bears high homology to its related protein insulin, and as such, there is an interplay between these molecules with regard to their anabolic and metabolic functions. Skeletal muscle produces a significant proportion of IGF-1, and is highly responsive to its actions, including increased muscle mass and improved regenerative capacity. In this overview, the regulation of IGF-1 production, stability, and activity in skeletal muscle will be described. Second, the physiological significance of the forms of IGF-1 produced will be discussed. Last, the interaction of IGF-1 with other pathways will be addressed. © 2019 American Physiological Society. Compr Physiol 9:413-438, 2019.
Collapse
Affiliation(s)
- Georgios Vassilakos
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, Florida, USA
| | - Elisabeth R Barton
- Department of Applied Physiology and Kinesiology, College of Health and Human Performance, University of Florida, Gainesville, Florida, USA
| |
Collapse
|
22
|
Duran-Ortiz S, Bell S, Kopchick JJ. Standardizing protocols dealing with growth hormone receptor gene disruption in mice using the Cre-lox system. Growth Horm IGF Res 2018; 42-43:52-57. [PMID: 30195091 PMCID: PMC9704043 DOI: 10.1016/j.ghir.2018.08.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 07/19/2018] [Accepted: 08/27/2018] [Indexed: 01/06/2023]
Abstract
OBJECTIVE Mice and humans with reduced growth hormone (GH) action before birth are conferred positive health- and life-span advantages. However, little work has been performed to study the effect of conditional disruption of GH action in adult life. With this as our objective, we sought to elucidate a reproducible protocol that allows generation of adult mice with a global disruption of the GH receptor (Ghr) gene, using the tamoxifen (TAM)-inducible Cre-lox system, driven by the ROSA26 enhancer/promoter. Here we report the optimum conditions for the gene disruption. DESIGN Six month old mice, homozygous for the ROSA26-Cre and the Ghr-floxed gene, were injected, once daily for five days with four distinct TAM doses (from 0.08 to 0.32 mg of TAM/g of body weight). To evaluate the most effective TAM dose that leads to global disruption of the GHR, mRNA expression of the Ghr and insulin growth factor-1 (Igf1) genes were assessed in liver, adipose tissue, kidney, and skeletal and cardiac muscles of experimental and control mice. Additionally, serum GH and IGF-1 levels were evaluated one month after TAM injections in both, TAM-treated and TAM-untreated control mice. RESULTS A dose of 0.25 mg of TAM/g of body weight was sufficient to significantly reduce the Ghr and Igf1 expression levels in the liver, fat, kidney, and skeletal and cardiac muscle of six-month old mice that are homozygous for the Ghr floxed gene and Cre recombinase. The reduction of the Ghr mRNA levels of the TAM-treated mice was variable between tissues, with liver and adipose tissue showing the lowest and skeletal and cardiac muscle the highest levels of Ghr gene expression when compared to control mice. Moreover, liver tissue showed the 'best' Ghr gene disruption, resulting in decreased total circulating IGF-1 levels while GH levels were increased versus control mice. CONCLUSION The results show that in mice at six months of age, a total TAM dose of at least 0.25 mg of TAM/g of body weight is needed for a global downregulation of Ghr gene expression with a regimen of 100 μL intraperitoneal (ip) TAM injections, once daily for five consecutive days. Furthermore, we found that even though this system does not achieve an equivalent disruption of the Ghr between tissues, the circulating IGF-1 is >95% decreased. This work helped to create adult mice with a global GHR knockdown.
Collapse
Affiliation(s)
- Silvana Duran-Ortiz
- Edison Biotechnology Institute, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, United States; Department of Biological Sciences, College of Arts and Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, United States; Molecular and Cellular Biology Program, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, United States.
| | - Stephen Bell
- Edison Biotechnology Institute, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, United States.
| | - John J Kopchick
- Edison Biotechnology Institute, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, United States; Molecular and Cellular Biology Program, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, United States; Department of Biomedical Sciences, Heritage College of Osteopathic Medicine, Ohio University, Athens, OH 45701, United States.
| |
Collapse
|
23
|
Cai C, Ahmad T, Valencia GB, Aranda JV, Xu J, Beharry KD. Intermittent hypoxia suppression of growth hormone and insulin-like growth factor-I in the neonatal rat liver. Growth Horm IGF Res 2018; 41:54-63. [PMID: 29544682 PMCID: PMC6064669 DOI: 10.1016/j.ghir.2018.03.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 03/05/2018] [Accepted: 03/07/2018] [Indexed: 12/20/2022]
Abstract
OBJECTIVES Extremely low gestational age neonates with chronic lung disease requiring oxygen therapy frequently experience fluctuations in arterial oxygen saturation or intermittent hypoxia (IH). These infants are at risk for multi-organ developmental delay, reduced growth, and short stature. The growth hormone (GH)/insulin-like growth factor-I (IGF-1) system, an important hormonal regulator of lipid and carbohydrate metabolism, promotes neonatal growth and development. We tested the hypothesis that increasing episodes of IH delay neonatal growth by influencing the GH/IGF-I axis. DESIGN Newborn rats were exposed to 2, 4, 6, 8, 10, or 12 hypoxic episodes (12% O2) during hyperoxia (50% O2) from P0-P7, P0-P14 (IH), or allowed to recover from P7-P21 or P14-P21 (IHR) in room air (RA). RA littermates at P7, P14, and P21 served as RA controls; and groups exposed to hyperoxia only (50% O2) served as zero IH controls. Histopathology of the liver; hepatic levels of GH, GHBP, IGF-I, IGFBP-3, and leptin; and immunoreactivities of GH, GHR, IGF-I and IGF-IR were determined. RESULTS Pathological findings of the liver, including cellular swelling, steatosis, necrosis and focal sinusoid congestion were seen in IH, and were particularly severe in the P7 animals. Hepatic GH levels were significantly suppressed in the IH groups exposed to 6-12 hypoxic episodes per day and were not normalized during IHR. Deficits in the GH levels were associated with reduced body length and increase body weight during IHR suggesting increased adiposity and catchup fat. Catchup fat was also associated with elevations in GHBP, IGF-I, leptin. CONCLUSIONS IH significantly impairs hepatic GH/IGF-1 signaling during the first few weeks of life, which is likely responsible for hepatic GH resistance, increased body fat, and hepatic steatosis. These hormonal perturbations may contribute to long-term organ and body growth impairment, and metabolic dysfunction in preterm infants experiencing frequent IH and/or apneic episodes.
Collapse
Affiliation(s)
- Charles Cai
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, State University of New York, Downstate Medical Center, Brooklyn, NY, USA
| | - Taimur Ahmad
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, State University of New York, Downstate Medical Center, Brooklyn, NY, USA
| | - Gloria B Valencia
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, State University of New York, Downstate Medical Center, Brooklyn, NY, USA
| | - Jacob V Aranda
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, State University of New York, Downstate Medical Center, Brooklyn, NY, USA; Department of Ophthalmology, State University of New York, Downstate Medical Center, Brooklyn, NY, USA; SUNY Eye Institute, NY, NY, USA
| | - Jiliu Xu
- Department of Pediatrics, Richmond University Medical Center, Staten Island, NY, USA
| | - Kay D Beharry
- Department of Pediatrics, Division of Neonatal-Perinatal Medicine, State University of New York, Downstate Medical Center, Brooklyn, NY, USA; Department of Ophthalmology, State University of New York, Downstate Medical Center, Brooklyn, NY, USA; SUNY Eye Institute, NY, NY, USA.
| |
Collapse
|
24
|
Formicola L, Pannérec A, Correra RM, Gayraud-Morel B, Ollitrault D, Besson V, Tajbakhsh S, Lachey J, Seehra JS, Marazzi G, Sassoon DA. Inhibition of the Activin Receptor Type-2B Pathway Restores Regenerative Capacity in Satellite Cell-Depleted Skeletal Muscle. Front Physiol 2018; 9:515. [PMID: 29881353 PMCID: PMC5978452 DOI: 10.3389/fphys.2018.00515] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 04/20/2018] [Indexed: 12/11/2022] Open
Abstract
Degenerative myopathies typically display a decline in satellite cells coupled with a replacement of muscle fibers by fat and fibrosis. During this pathological remodeling, satellite cells are present at lower numbers and do not display a proper regenerative function. Whether a decline in satellite cells directly contributes to disease progression or is a secondary result is unknown. In order to dissect these processes, we used a genetic model to reduce the satellite cell population by ~70–80% which leads to a nearly complete loss of regenerative potential. We observe that while no overt tissue damage is observed following satellite cell depletion, muscle fibers atrophy accompanied by changes in the stem cell niche cellular composition. Treatment of these mice with an Activin receptor type-2B (AcvR2B) pathway blocker reverses muscle fiber atrophy as expected, but also restores regenerative potential of the remaining satellite cells. These findings demonstrate that in addition to controlling fiber size, the AcvR2B pathway acts to regulate the muscle stem cell niche providing a more favorable environment for muscle regeneration.
Collapse
Affiliation(s)
- Luigi Formicola
- UMR S 1166 French National Institute of Health and Medical Research, France and the Institute of Cardiometabolism and Nutrition, Stem Cells and Regenerative Medicine, University of Pierre and Marie Curie Paris VI, Paris, France
| | - Alice Pannérec
- UMR S 1166 French National Institute of Health and Medical Research, France and the Institute of Cardiometabolism and Nutrition, Stem Cells and Regenerative Medicine, University of Pierre and Marie Curie Paris VI, Paris, France
| | - Rosa Maria Correra
- UMR S 1166 French National Institute of Health and Medical Research, France and the Institute of Cardiometabolism and Nutrition, Stem Cells and Regenerative Medicine, University of Pierre and Marie Curie Paris VI, Paris, France
| | - Barbara Gayraud-Morel
- Centre National de la Recherche Scientifique URA 2578, Institut Pasteur, Stem Cells and Development, Paris, France
| | - David Ollitrault
- UMR S 1166 French National Institute of Health and Medical Research, France and the Institute of Cardiometabolism and Nutrition, Stem Cells and Regenerative Medicine, University of Pierre and Marie Curie Paris VI, Paris, France
| | - Vanessa Besson
- UMR S 1166 French National Institute of Health and Medical Research, France and the Institute of Cardiometabolism and Nutrition, Stem Cells and Regenerative Medicine, University of Pierre and Marie Curie Paris VI, Paris, France
| | - Shahragim Tajbakhsh
- Centre National de la Recherche Scientifique URA 2578, Institut Pasteur, Stem Cells and Development, Paris, France
| | - Jennifer Lachey
- Acceleron Pharma, Cambridge, MA, United States.,Ember Therapeutics, Watertown, MA, United States
| | - Jasbir S Seehra
- Acceleron Pharma, Cambridge, MA, United States.,Ember Therapeutics, Watertown, MA, United States
| | - Giovanna Marazzi
- UMR S 1166 French National Institute of Health and Medical Research, France and the Institute of Cardiometabolism and Nutrition, Stem Cells and Regenerative Medicine, University of Pierre and Marie Curie Paris VI, Paris, France
| | - David A Sassoon
- UMR S 1166 French National Institute of Health and Medical Research, France and the Institute of Cardiometabolism and Nutrition, Stem Cells and Regenerative Medicine, University of Pierre and Marie Curie Paris VI, Paris, France
| |
Collapse
|
25
|
GH/IGF-1 Signaling and Current Knowledge of Epigenetics; a Review and Considerations on Possible Therapeutic Options. Int J Mol Sci 2017; 18:ijms18101624. [PMID: 28981462 PMCID: PMC5666699 DOI: 10.3390/ijms18101624] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 07/13/2017] [Accepted: 07/17/2017] [Indexed: 01/01/2023] Open
Abstract
Epigenetic mechanisms play an important role in the regulation of the Growth Hormone- Insulin-like Growth Factor 1 (GH-IGF1) axis and in processes for controlling long bone growth, and carbohydrate and lipid metabolism. Improvement of methodologies that allow for the assessment of epigenetic regulation have contributed enormously to the understanding of GH action, but many questions still remain to be clarified. The reversible nature of epigenetic factors and, particularly, their role as mediators between the genome and the environment, make them viable therapeutic target candidates. Rather than reviewing the molecular and epigenetic pathways regulated by GH action, in this review we have focused on the use of epigenetic modulators as potential drugs to improve the GH response. We first discuss recent progress in the understanding of intracellular molecular mechanisms controlling GH and IGF-I action. We then emphasize current advances in genetic and epigenetic mechanisms that control gene expression, and which support a key role for epigenetic regulation in the cascade of intracellular events that trigger GH action when coupled to its receptor. Thirdly, we focus on fetal programming and epigenetic regulation at the IGF1 locus. We then discuss epigenetic alterations in intrauterine growth retardation, and the possibility for a potential epigenetic pharmaceutical approach in short stature associated with this fetal condition. Lastly, we review an example of epigenetic therapeutics in the context of growth-related epigenetic deregulation disorders. The advance of our understanding of epigenetic changes and the impact they are having on new forms of therapy creates exciting prospects for the future.
Collapse
|
26
|
Ben-Avraham D, Govindaraju DR, Budagov T, Fradin D, Durda P, Liu B, Ott S, Gutman D, Sharvit L, Kaplan R, Bougnères P, Reiner A, Shuldiner AR, Cohen P, Barzilai N, Atzmon G. The GH receptor exon 3 deletion is a marker of male-specific exceptional longevity associated with increased GH sensitivity and taller stature. SCIENCE ADVANCES 2017; 3:e1602025. [PMID: 28630896 PMCID: PMC5473676 DOI: 10.1126/sciadv.1602025] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 04/26/2017] [Indexed: 05/26/2023]
Abstract
Although both growth hormone (GH) and insulin-like growth factor 1 (IGF-1) signaling were shown to regulate life span in lower organisms, the role of GH signaling in human longevity remains unclear. Because a GH receptor exon 3 deletion (d3-GHR) appears to modulate GH sensitivity in humans, we hypothesized that this polymorphism could play a role in human longevity. We report a linear increased prevalence of d3-GHR homozygosity with age in four independent cohorts of long-lived individuals: 841 participants [567 of the Longevity Genes Project (LGP) (8% increase; P = 0.01), 152 of the Old Order Amish (16% increase; P = 0.02), 61 of the Cardiovascular Health Study (14.2% increase; P = 0.14), and 61 of the French Long-Lived Study (23.5% increase; P = 0.02)]. In addition, mega analysis of males in all cohorts resulted in a significant positive trend with age (26% increase; P = 0.007), suggesting sexual dimorphism for GH action in longevity. Further, on average, LGP d3/d3 homozygotes were 1 inch taller than the wild-type (WT) allele carriers (P = 0.05) and also showed lower serum IGF-1 levels (P = 0.003). Multivariate regression analysis indicated that the presence of d3/d3 genotype adds approximately 10 years to life span. The LGP d3/d3-GHR transformed lymphocytes exhibited superior growth and extracellular signal-regulated kinase activation, to GH treatment relative to WT GHR lymphocytes (P < 0.01), indicating a GH dose response. The d3-GHR variant is a common genetic polymorphism that modulates GH responsiveness throughout the life span and positively affects male longevity.
Collapse
Affiliation(s)
- Danny Ben-Avraham
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY 10461, USA
- Institute of Aging Research, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Diddahally R. Govindaraju
- Institute of Aging Research, Albert Einstein College of Medicine, Bronx, NY 10461, USA
- Department of Human Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA
| | - Temuri Budagov
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA
- Institute of Aging Research, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Delphine Fradin
- INSERM U986, Pincus Building, Bicêtre Hospital, Paris Sud University, 94275 Le Kremlin Bicêtre, France
| | - Peter Durda
- Department of Pathology University of Vermont, 208 South Park Drive, Colchester, VT 05446, USA
| | - Bing Liu
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Sandy Ott
- University of Maryland School of Medicine, Baltimore, MD 21201, USA
| | - Danielle Gutman
- Department of Human Biology, Faculty of Natural Sciences, University of Haifa, Haifa, Israel
| | - Lital Sharvit
- Department of Human Biology, Faculty of Natural Sciences, University of Haifa, Haifa, Israel
| | - Robert Kaplan
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Pierre Bougnères
- INSERM U986, Pincus Building, Bicêtre Hospital, Paris Sud University, 94275 Le Kremlin Bicêtre, France
- INSERM U1169 and Department of Pediatric Endocrinology and Diabetes, Bicêtre Hospital, Pôle I3E, Paris Sud University, 94275 Le Kremlin Bicêtre, France
| | - Alex Reiner
- Department of Epidemiology, University of Washington School of Public Health, Seattle, WA 98195, USA
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - Alan R. Shuldiner
- University of Maryland School of Medicine, Baltimore, MD 21201, USA
- Geriatrics Research and Education Clinical Center, Veterans Administration Medical Center, Baltimore, MD 20420, USA
| | - Pinchas Cohen
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, USA
| | - Nir Barzilai
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY 10461, USA
- Institute of Aging Research, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Gil Atzmon
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA
- Department of Genetics, Albert Einstein College of Medicine, Bronx, NY 10461, USA
- Institute of Aging Research, Albert Einstein College of Medicine, Bronx, NY 10461, USA
- Department of Human Biology, Faculty of Natural Sciences, University of Haifa, Haifa, Israel
| |
Collapse
|
27
|
Meyer KF, Krauss-Etschmann S, Kooistra W, Reinders-Luinge M, Timens W, Kobzik L, Plösch T, Hylkema MN. Prenatal exposure to tobacco smoke sex dependently influences methylation and mRNA levels of the Igf axis in lungs of mouse offspring. Am J Physiol Lung Cell Mol Physiol 2017; 312:L542-L555. [PMID: 28130259 DOI: 10.1152/ajplung.00271.2016] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 01/26/2017] [Accepted: 01/26/2017] [Indexed: 12/12/2022] Open
Abstract
Prenatal smoke exposure is a risk factor for abnormal lung development and increased sex-dependent susceptibility for asthma and chronic obstructive pulmonary disease (COPD). Birth cohort studies show genome-wide DNA methylation changes in children from smoking mothers, but evidence for sex-dependent smoke-induced effects is limited. The insulin-like growth factor (IGF) system plays an important role in lung development. We hypothesized that prenatal exposure to smoke induces lasting changes in promoter methylation patterns of Igf1 and Igf1r, thus influencing transcriptional activity and contributing to abnormal lung development. We measured and compared mRNA levels along with promoter methylation of Igf1 and Igf1r and their protein concentrations in lung tissue of 30-day-old mice that had been prenatally exposed to cigarette smoke (PSE) or filtered air (control). Body weight at 30 days after birth was measured as global indicator of normal development. Female PSE mice showed lower mRNA levels of Igf1 and its receptor (Igf1: P = 0.05; Igf1r: P = 0.03). Furthermore, CpG-site-specific methylation changes were detected in Igf1r in a sex-dependent manner and the body weight of female offspring was reduced after prenatal exposure to smoke, while protein concentrations were unaffected. Prenatal exposure to smoke induces a CpG-site-specific loss of Igf1r promoter methylation, which can be associated with body weight. These findings highlight the sex-dependent and potentially detrimental effects of in utero smoke exposure on DNA methylation and Igf1 and Igf1r mRNA levels. The observations support a role for Igf1 and Igf1r in abnormal development.
Collapse
Affiliation(s)
- K F Meyer
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center, Groningen, The Netherlands
- GRIAC Research Institute, University of Groningen, University Medical Center Groningen, The Netherlands
| | - S Krauss-Etschmann
- Priority Area Asthma and Allergy, Leibnitz Center for Medicine and Biosciences, Research Center Borstel and Christian Albrechts University Kiel, Germany
| | - W Kooistra
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center, Groningen, The Netherlands
- GRIAC Research Institute, University of Groningen, University Medical Center Groningen, The Netherlands
| | - M Reinders-Luinge
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center, Groningen, The Netherlands
- GRIAC Research Institute, University of Groningen, University Medical Center Groningen, The Netherlands
| | - W Timens
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center, Groningen, The Netherlands
- GRIAC Research Institute, University of Groningen, University Medical Center Groningen, The Netherlands
| | - L Kobzik
- Molecular and Integrative Physiological Sciences Program, Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts; and
| | - T Plösch
- Department of Obstetrics and Gynaecology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - M N Hylkema
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center, Groningen, The Netherlands;
- GRIAC Research Institute, University of Groningen, University Medical Center Groningen, The Netherlands
| |
Collapse
|
28
|
Baroncelli L, Cenni MC, Melani R, Deidda G, Landi S, Narducci R, Cancedda L, Maffei L, Berardi N. Early IGF-1 primes visual cortex maturation and accelerates developmental switch between NKCC1 and KCC2 chloride transporters in enriched animals. Neuropharmacology 2017; 113:167-177. [PMID: 26924708 DOI: 10.1016/j.neuropharm.2016.02.034] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Revised: 02/01/2016] [Accepted: 02/24/2016] [Indexed: 12/17/2022]
Abstract
Environmental enrichment (EE) has a remarkable impact on brain development. Continuous exposure to EE from birth determines a significant acceleration of visual system maturation both at retinal and cortical levels. A pre-weaning enriched experience is sufficient to trigger the accelerated maturation of the visual system, suggesting that factors affected by EE during the first days of life might prime visual circuits towards a faster development. The search for such factors is crucial not only to gain a better understanding of the molecular hierarchy of brain development but also to identify molecular pathways amenable to be targeted to correct atypical brain developmental trajectories. Here, we showed that IGF-1 levels are increased in the visual cortex of EE rats as early as P6 and this is a crucial event for setting in motion the developmental program induced by EE. Early intracerebroventricular (i.c.v.) infusion of IGF-1 in standard rats was sufficient to mimic the action of EE on visual acuity development, whereas blocking IGF-1 signaling by i.c.v. injections of the IGF-1 receptor antagonist JB1 prevented the deployment of EE effects. Early IGF-1 decreased the ratio between the expression of NKCC1 and KCC2 cation/chloride transporters, and the reversal potential for GABAAR-driven Cl- currents (ECl) was shifted toward more negative potentials, indicating that IGF-1 is a crucial factor in accelerating the maturation of GABAergic neurotransmission and promoting the developmental switch of GABA polarity from excitation to inhibition. In addition, early IGF-1 promoted a later occurring increase in its own expression, suggesting a priming effect of early IGF-1 in driving post-weaning cortical maturation.
Collapse
Affiliation(s)
- Laura Baroncelli
- Institute of Neuroscience CNR, via Moruzzi 1, I-56124, Pisa, Italy.
| | | | - Riccardo Melani
- Institute of Neuroscience CNR, via Moruzzi 1, I-56124, Pisa, Italy; Department of Neuroscience, Psychology, Drug Research, Child Health (NEUROFARBA), University of Florence, Piazza San Marco 4, I-50121, Florence, Italy
| | - Gabriele Deidda
- Department of Neuroscience and Brain Technologies, Istituto Italiano di Tecnologia, Via Morego 30, I-16163, Genoa, Italy
| | - Silvia Landi
- Institute of Neuroscience CNR, via Moruzzi 1, I-56124, Pisa, Italy
| | - Roberta Narducci
- Department of Neuroscience, Psychology, Drug Research, Child Health (NEUROFARBA), University of Florence, Piazza San Marco 4, I-50121, Florence, Italy
| | - Laura Cancedda
- Department of Neuroscience and Brain Technologies, Istituto Italiano di Tecnologia, Via Morego 30, I-16163, Genoa, Italy
| | - Lamberto Maffei
- Institute of Neuroscience CNR, via Moruzzi 1, I-56124, Pisa, Italy; Laboratory of Neurobiology, Scuola Normale Superiore, Piazza Cavalieri 7, I-56126, Pisa, Italy
| | - Nicoletta Berardi
- Institute of Neuroscience CNR, via Moruzzi 1, I-56124, Pisa, Italy; Department of Neuroscience, Psychology, Drug Research, Child Health (NEUROFARBA), University of Florence, Piazza San Marco 4, I-50121, Florence, Italy
| |
Collapse
|
29
|
Kam RKT, Ho CS, Chan MHM. Serum Insulin-like Growth Factor I Quantitation by Mass Spectrometry: Insights for Protein Quantitation with this Technology. EJIFCC 2016; 27:318-330. [PMID: 28149264 PMCID: PMC5282915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Liquid chromatography mass spectrometry (LC-MS) is a widely used technique in the clinical laboratory, especially for small molecule quantitation in biological specimens, for example, steroid hormones and therapeutic drugs. Analysis of circulating macromolecules, including proteins and peptides, is largely dominated by traditional enzymatic, spectrophotometric, or immunological assays in clinical laboratories. However, these methodologies are known to be subjected to interfering substances, for example heterophilic antibodies, as well as subjected to non-specificity issues. In recent years, there has been a growing interest in using LC-MS platforms for protein analysis in the clinical setting, due to the superior specificity compared to immunoassay, and the possibility of simultaneous quantitation of multiple proteins. Different analytical approaches are possible using LC-MS-based methodology, including accurate mass measurement of intact molecules, protein digestion followed by detection of proteolytic peptides, and in combination with immunoaffinity purification. Proteins with different complexity, isoforms, variants, or chemical alteration can be simultaneously analysed by LC-MS, either by targeted or non-targeted approaches. While the LC-MS platform offers a more specific determination of proteins, there remain issues of LC-MS assay harmonization, correlation with current existing platforms, and the potential impact in making clinical decision. In this review, the clinical utility, historical aspect, and challenges in using LC-MS for protein analysis in the clinical setting will be discussed, using insulin-like growth factor (IGF) as an example.
Collapse
Affiliation(s)
- Richard Kin Ting Kam
- Scientific Officer Department of Chemical Pathology The Chinese University of Hong Kong Prince of Wales Hospital Shatin New Territories Hong Kong SAR, China
| | | | | |
Collapse
|
30
|
Habibi P, Alihemmati A, Nasirzadeh M, Yousefi H, Habibi M, Ahmadiasl N. Involvement of microRNA-133 and -29 in cardiac disturbances in diabetic ovariectomized rats. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2016; 19:1177-1185. [PMID: 27917273 PMCID: PMC5126218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
OBJECTIVES Menopause and diabetes obviously increase the risk of cardiovascular disease in women. The aims of the present study were to evaluate the effects of ovariectomy in type 2 diabetes on the histology and expression of miRNA-29, miRNA-133, IGF-1 and Bcl-2 genes and Bcl-2 protein and caspase 3 activity in the hearts of female rats. MATERIALS AND METHODS Forty Female Wistar rats were divided into four groups: control, sham, ovariectomized (OVX), and ovariectomized with type 2 diabetes (OVX.D). After the 8-week experiment, the histological evaluation of the heart tissue was performed using H&E staining and PAS analysis, and cardiac expression of miRNA-29, miRNA-133, IGF-1, and Bcl-2 were evaluated using real-time PCR, and Bcl-2 protein and caspase 3 activity were evaluated using Western blot and ELISA. RESULTS Ovariectomy significantly decreased miRNA-29, miRNA-133, IGF-1, and BCL-2 expression and Bcl-2 protein and increased caspase 3 activity in the heart compared to sham animals group (P<0.05). Type 2 diabetes in ovariectomized rats markedly decreased expression of miRNA-29, miRNA-133, IGF-1, BCL-2 genes, and Bcl-2 protein, and increased caspase 3 activity and reduced collagen and fibroblast tissue and glycogen granule deposition in relation to OVX group (P<0.05). CONCLUSION Our findings suggest that type 2 diabetes and menopause synergically could enhance the cardiac fibrosis through dysregulation of miRNA-29, miRNA-133, IGF-1, and Bcl-2 genes expression and Bcl-2 protein and upregulation of caspase 3 activity.
Collapse
Affiliation(s)
- Parisa Habibi
- Department of Physiology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Alireza Alihemmati
- Department of Histology & Embryology, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Hadi Yousefi
- Department of Physiology, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Nasser Ahmadiasl
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran,Corresponding author: Nasser Ahmadiasl. Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. Tel/Fax: +98-4133364664;
| |
Collapse
|
31
|
He B, Zhang N, Jia Y, Sun Q, Zhao R. Glucocorticoid receptor-mediated insulin-like growth factor-I transcriptional regulation in BeWo trophoblast cells before and after syncytialisation. Steroids 2016; 115:26-33. [PMID: 27500692 DOI: 10.1016/j.steroids.2016.08.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 07/28/2016] [Accepted: 08/01/2016] [Indexed: 11/28/2022]
Abstract
Prenatal exposure to excessive glucocorticoids (GCs) leads to intrauterine growth retardation and fetal programming of adult health and disease through deregulation of placental functions. Placental secretion of insulin-like growth factor-I (IGF-I) plays a critical role in the regulation of placental development and function. However, it remains elusive whether GCs affect placental functions through glucocorticoid receptor (GR)-mediated transcriptional regulation of IGF-I gene. In this study, human placental choriocarcinoma (BeWo) cells before and after syncytialization were used as cytotrophoblast and syncytiotrophoblast models, respectively, to explore the effects of dexamethasone (Dex) on transcriptional regulation of IGF-I gene at both stages. Dex significantly inhibited (P<0.05) cell proliferation in cytotrophoblasts and down-regulated amino acid transporter SLC7A5 in syncytiotrophoblasts. Concurrently, the abundance of IGF-I mRNA and its transcript variants, together with IGF-I level in culture media, were significantly reduced, in association with significantly enhanced (P<0.05) GR phosphorylation. GR antagonist RU486 was able to abolish all these effects. Two glucocorticoid response elements (GREs) were predicted in the promoter regions of IGF-I gene. GR binding to GRE1 was significantly enriched (P<0.05) in both cytotrophoblasts and syncytiotrophoblasts, but that to GRE2 was significantly diminished (P<0.05) in cytotrophoblasts but not in syncytiotrophoblasts, in response to Dex treatment. IGF-I supplementation completely rescued Dex-induced cell cycle arrest but not SLC7A5 down-regulation, indicating different regulatory mechanisms. Taken together, our results suggest that GR-mediated transcriptional regulation of IGF-I is involved in Dex-induced inhibition of placental cell proliferation and function.
Collapse
Affiliation(s)
- Bin He
- Key Laboratory of Animal Physiology and Biochemistry, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Nana Zhang
- Key Laboratory of Animal Physiology and Biochemistry, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Yimin Jia
- Key Laboratory of Animal Physiology and Biochemistry, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Qinwei Sun
- Key Laboratory of Animal Physiology and Biochemistry, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Ruqian Zhao
- Key Laboratory of Animal Physiology and Biochemistry, Ministry of Agriculture, Nanjing Agricultural University, Nanjing 210095, PR China; Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, Nanjing 210095, PR China.
| |
Collapse
|
32
|
Annibalini G, Bielli P, De Santi M, Agostini D, Guescini M, Sisti D, Contarelli S, Brandi G, Villarini A, Stocchi V, Sette C, Barbieri E. MIR retroposon exonization promotes evolutionary variability and generates species-specific expression of IGF-1 splice variants. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2016; 1859:757-68. [DOI: 10.1016/j.bbagrm.2016.03.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 03/07/2016] [Accepted: 03/23/2016] [Indexed: 12/18/2022]
|
33
|
Liu Y, Guo W, Pu Z, Li X, Lei X, Yao J, Yang X. Developmental changes of Insulin-like growth factors in the liver and muscle of chick embryos. Poult Sci 2016; 95:1396-402. [PMID: 26944971 DOI: 10.3382/ps/pew043] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 12/18/2015] [Indexed: 01/09/2023] Open
Abstract
The insulin-like growth factors ( IGFS: ) are synthesized in tissues and play an important role in embryonic development of avian via autocrine/paracrine mechanisms. In the study, mRNA expression of IGFs were detected by real-time PCR in the muscle and liver from d 10 to 20 of chick embryo ( E10: to E20: ). Methylation of IGF1 promoter in the muscle was analyzed by bisulfite sequencing PCR as well as IGF2 promoter in the liver. These results showed that there was obviously IGF1 expression in liver at E19 and E20. The higher IGF1 expression in muscle was found during E15 to E18 with the peak on E17, and then declined. Correspondingly, the lowest methylation level of IGF1 promoter was detectable on the same embryonic d 17. Expression of IGF2 in muscle increased gradually during embryonic growth and showed higher level in the later stages (E17 to E20) when IGF1 expression began to decrease. IGF2 expression in liver reached the first peak on E14, then declined but gradually elevated from E17. IGF2 promoter methylation in liver showed gradual decline on d 12, 15, 17 and 19 of incubation, meanwhile IGF2 expression of liver increased gradually. These results suggested that IGF1 and IGF2 might separately be more important for muscle and liver growth in chick embryonic development. Variation of IGFs expression during the incubation might be concerned with the methylation of gene promoter. The profile of IGFs expression in chick embryonic tissues may be meaningful for understanding organ growth and embryonic development in chick.
Collapse
Affiliation(s)
- Yanli Liu
- College of Animal Science and Technology, Northwest A&F University, Yangling, China, 712100
| | - Wei Guo
- College of Animal Science and Technology, Northwest A&F University, Yangling, China, 712100
| | - Zhenyu Pu
- College of Animal Science and Technology, Northwest A&F University, Yangling, China, 712100
| | - Xueyuan Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, China, 712100
| | - Xinyu Lei
- College of Animal Science and Technology, Northwest A&F University, Yangling, China, 712100
| | - Junhu Yao
- College of Animal Science and Technology, Northwest A&F University, Yangling, China, 712100
| | - Xiaojun Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China, 712100
| |
Collapse
|
34
|
Ouni M, Castell AL, Rothenbuhler A, Linglart A, Bougnères P. Higher methylation of the IGF1 P2 promoter is associated with idiopathic short stature. Clin Endocrinol (Oxf) 2016. [PMID: 26218795 DOI: 10.1111/cen.12867] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Idiopathic short stature (ISS) has a strong familial component, but genetics explains only part of it. Indeed, environmental factors act on human growth either directly or through epigenetic factors that remain to be determined. Given the importance of the GH/IGF1 axis for child growth, we suspected that such epigenetic factors could involve the CG methylation at the IGF1 gene P2 promoter, which was recently shown to be a transcriptional regulator for IGF1 gene and a major contributor to GH sensitivity. OBJECTIVE Explore whether the methylation of the two IGF1 low-CG-rich promoters (P1 and P2) is associated with ISS. SUBJECTS AND METHODS A total of 94 children with ISS were compared with 119 age-matched children of normal height for the methylation of CGs located within the IGF1 promoters measured with bisulphite PCR pyrosequencing. RESULTS The methylation of 5 CGs of the P2 promoter was higher in ISS children, notably CG-137 (49 ± 4% in ISS vs 46 ± 4 % in control children, P = 9 × 10-5 ). This was also true for CG-611 of the P1 promoter (93 ± 3% vs 91 ± 3% P = 10-4 ). The CG methylation of the IGF1 promoters thus takes place among the multifactorial factors that are associated with ISS.
Collapse
Affiliation(s)
- Meriem Ouni
- Institut National de la Santé et de la Recherche Médicale U986, Bicêtre Hospital, Paris Sud University, Le Kremlin-Bicêtre, France
| | - Anne-Laure Castell
- Department of Pediatric Endocrinology and Diabetes, I3E Pole, Bicêtre Hospital, Paris Sud University, Le Kremlin-Bicêtre, France
| | - Anya Rothenbuhler
- Department of Pediatric Endocrinology and Diabetes, I3E Pole, Bicêtre Hospital, Paris Sud University, Le Kremlin-Bicêtre, France
| | - Agnès Linglart
- Department of Pediatric Endocrinology and Diabetes, I3E Pole, Bicêtre Hospital, Paris Sud University, Le Kremlin-Bicêtre, France
| | - Pierre Bougnères
- Institut National de la Santé et de la Recherche Médicale U986, Bicêtre Hospital, Paris Sud University, Le Kremlin-Bicêtre, France
- Department of Pediatric Endocrinology and Diabetes, I3E Pole, Bicêtre Hospital, Paris Sud University, Le Kremlin-Bicêtre, France
| |
Collapse
|
35
|
Pelosi M, Alfò M, Martella F, Pappalardo E, Musarò A. Finite mixture clustering of human tissues with different levels of IGF-1 splice variants mRNA transcripts. BMC Bioinformatics 2015; 16:289. [PMID: 26370240 PMCID: PMC4570607 DOI: 10.1186/s12859-015-0689-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 07/29/2015] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND This study addresses a recurrent biological problem, that is to define a formal clustering structure for a set of tissues on the basis of the relative abundance of multiple alternatively spliced isoforms mRNAs generated by the same gene. To this aim, we have used a model-based clustering approach, based on a finite mixture of multivariate Gaussian densities. However, given we had more technical replicates from the same tissue for each quantitative measurement, we also employed a finite mixture of linear mixed models, with tissue-specific random effects. RESULTS A panel of human tissues was analysed through quantitative real-time PCR methods, to quantify the relative amount of mRNA encoding different IGF-1 alternative splicing variants. After an appropriate, preliminary, equalization of the quantitative data, we provided an estimate of the distribution of the observed concentrations for the different IGF-1 mRNA splice variants in the cohort of tissues by employing suitable kernel density estimators. We observed that the analysed IGF-1 mRNA splice variants were characterized by multimodal distributions, which could be interpreted as describing the presence of several sub-population, i.e. potential tissue clusters. In this context, a formal clustering approach based on a finite mixture model (FMM) with Gaussian components is proposed. Due to the presence of potential dependence between the technical replicates (originated by repeated quantitative measurements of the same mRNA splice isoform in the same tissue) we have also employed the finite mixture of linear mixed models (FMLMM), which allowed to take into account this kind of within-tissue dependence. CONCLUSIONS The FMM and the FMLMM provided a convenient yet formal setting for a model-based clustering of the human tissues in sub-populations, characterized by homogeneous values of concentrations of the mRNAs for one or multiple IGF-1 alternative splicing isoforms. The proposed approaches can be applied to any cohort of tissues expressing several alternatively spliced mRNAs generated by the same gene, and can overcome the limitations of clustering methods based on simple comparisons between splice isoform expression levels.
Collapse
Affiliation(s)
- Michele Pelosi
- Institute Pasteur Cenci-Bolognetti, DAHFMO-Unit of Histology and Medical Embryology, IIM, Sapienza University of Rome, Via A. Scarpa 16, 00161, Rome, Italy.
| | - Marco Alfò
- Dipartimento di Scienze Statistiche, Sapienza University of Rome, P. le A. Moro 5, 00185, Rome, Italy.
| | - Francesca Martella
- Dipartimento di Scienze Statistiche, Sapienza University of Rome, P. le A. Moro 5, 00185, Rome, Italy.
| | - Elisa Pappalardo
- Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford, OX1 3RF, UK.
| | - Antonio Musarò
- Institute Pasteur Cenci-Bolognetti, DAHFMO-Unit of Histology and Medical Embryology, IIM, Sapienza University of Rome, Via A. Scarpa 16, 00161, Rome, Italy. .,Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, Viale Regina Elena 291, Rome, 00161, Italy.
| |
Collapse
|
36
|
Feng J, Wan R, Yi Q, He L, Yang L, Tang L. Examination of alternate codon bias solutions for expression and purification of recombinant mechano-growth factor inEscherichia coli. Biotechnol Appl Biochem 2015; 62:690-8. [DOI: 10.1002/bab.1312] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Accepted: 10/20/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Jianguo Feng
- Key Laboratory of Biorheological Science and Technology; Ministry of Education; College of Bioengineering; Chongqing University; Chongqing People's Republic of China
| | - Rongxue Wan
- Key Laboratory of Biorheological Science and Technology; Ministry of Education; College of Bioengineering; Chongqing University; Chongqing People's Republic of China
| | - Qian Yi
- Key Laboratory of Biorheological Science and Technology; Ministry of Education; College of Bioengineering; Chongqing University; Chongqing People's Republic of China
| | - Ling He
- Key Laboratory of Biorheological Science and Technology; Ministry of Education; College of Bioengineering; Chongqing University; Chongqing People's Republic of China
| | - Li Yang
- Key Laboratory of Biorheological Science and Technology; Ministry of Education; College of Bioengineering; Chongqing University; Chongqing People's Republic of China
| | - Liling Tang
- Key Laboratory of Biorheological Science and Technology; Ministry of Education; College of Bioengineering; Chongqing University; Chongqing People's Republic of China
| |
Collapse
|
37
|
Kasprzak A, Adamek A, Przybyszewska W, Pyda P, Szmeja J, Seraszek-Jaros A, Lanzafame A, Surdacka A, Mozer-Lisewska I, Koczorowska M. Insulin-like growth factor-1 mRNA isoforms and insulin-like growth factor-1 receptor mRNA expression in chronic hepatitis C. World J Gastroenterol 2015; 21:3867-3875. [PMID: 25852271 PMCID: PMC4385533 DOI: 10.3748/wjg.v21.i13.3867] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Accepted: 01/08/2015] [Indexed: 02/07/2023] Open
Abstract
AIM: To evaluate the expression of different insulin-like growth factor (IGF)-1 mRNA isoforms and IGF-1 receptor (IGF-1R) mRNA in hepatitis C virus (HCV)-infected livers.
METHODS: Thirty-four liver biopsy specimens from chronic hepatitis C (CH-C) patients were obtained before anti-viral therapy. Inflammatory activity (grading) and advancement of fibrosis (staging) were evaluated using a modified point scale of METAVIR. The samples were analyzed using quantitative real-time PCR technique. From fragments of liver biopsies and control liver that were divided and ground in liquid nitrogen, RNA was isolated using RNeasy Fibrous Tissue Mini Kit according to the manufacturer’s instruction. Expression levels of IGF-1 mRNA isoforms (IGF-1A, IGF-1B, IGF-1C, P1, and P2) and IGF-1R mRNA were determined through normalization of copy numbers in samples as related to reference genes: glyceraldehyde-3-phosphate dehydrogenase and hydroxymethylbilane synthase. Results on liver expression of the IGF-1 mRNA isoforms and IGF-1R transcript were compared to histological alterations in liver biopsies and with selected clinical data in the patients. Statistical analysis was performed using Statistica PL v. 9 software.
RESULTS: The study showed differences in quantitative expression of IGF-1 mRNA variants in HCV-infected livers, as compared to the control. Higher relative expression of total IGF-1 mRNA and of IGF-1 mRNAs isoforms (P1, A, and C) in HCV-infected livers as compared to the control were detected. Within both groups, expression of the IGF-1A mRNA isoform significantly prevailed over expressions of B and C isoforms. Expression of P1 mRNA was higher than that of P2 only in CH-C. Very high positive correlations were detected between reciprocal expressions of IGF-1 mRNA isoforms P1 and P2 (r = 0.876). Expression of P1 and P2 mRNA correlated with IGF-1A mRNA (r = 0.891; r = 0.821, respectively), with IGF-1B mRNA (r = 0.854; r = 0.813, respectively), and with IGF-1C mRNA (r = 0.839; r = 0.741, respectively). Expression of IGF-1A mRNA significantly correlated with isoform B and C mRNA (r = 0.956; r = 0.869, respectively), and B with C isoforms (r = 0.868) (P < 0.05 in all cases). Lower expression of IGF-1A and B transcripts was noted in the more advanced liver grading (G2) as compared to G1. Multiple negative correlations were detected between expression of various IGF-1 transcripts and clinical data (e.g., alpha fetoprotein, HCV RNA, steatosis, grading, and staging). Expression of IGF-1R mRNA manifested positive correlation with grading and HCV-RNA.
CONCLUSION: Differences in quantitative expression of IGF-1 mRNA isoforms in HCV-infected livers, as compared to the control, suggest that HCV may induce alteration of IGF-1 splicing profile.
Collapse
|
38
|
Peña JR, Pinney JR, Ayala P, Desai TA, Goldspink PH. Localized delivery of mechano-growth factor E-domain peptide via polymeric microstructures improves cardiac function following myocardial infarction. Biomaterials 2015; 46:26-34. [PMID: 25678113 PMCID: PMC4328136 DOI: 10.1016/j.biomaterials.2014.12.050] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 12/09/2014] [Accepted: 12/22/2014] [Indexed: 01/28/2023]
Abstract
The Insulin like growth factor-I isoform mechano-growth factor (MGF), is expressed in the heart following myocardial infarction and encodes a unique E-domain region. To examine E-domain function, we delivered a synthetic peptide corresponding to the unique E-domain region of the human MGF (IGF-1Ec) via peptide eluting polymeric microstructures to the heart. The microstructures were made of poly (ethylene glycol) dimethacrylate hydrogel and bioengineered to be the same size as an adult cardiac myocyte (100 × 15 × 15 μm) and with a stiffness of 20 kPa. Peptide eluting microrods and empty microrods were delivered via intramuscular injection following coronary artery ligation in mice. To examine the physiologic consequences, we assessed the impact of peptide delivery on cardiac function and cardiovascular hemodynamics using pressure-volume loops and gene expression by quantitative RT-PCR. A significant decline in both systolic and diastolic function accompanied by pathologic hypertrophy occurred by 2 weeks which decompensated further by 10 weeks post-infarct in the untreated groups. Delivery of the E-domain peptide eluting microrods decreased mortality, ameliorated the decline in hemodynamics, and delayed decompensation. This was associated with the inhibition of pathologic hypertrophy despite increasing vascular impedance. Delivery of the empty microrods had limited effects on hemodynamics and while pathologic hypertrophy persisted there was a decrease in ventricular stiffness. Our data show that cardiac restricted administration of the MGF E-domain peptide using polymeric microstructures may be used to prevent adverse remodeling of the heart and improve function following myocardial infarction.
Collapse
Affiliation(s)
- James R Peña
- Department of Physiology & Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - James R Pinney
- UCSF Medical Scientist Training Program, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Perla Ayala
- UC Berkeley-UCSF Graduate Group in Bioengineering, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Tejal A Desai
- UC Berkeley-UCSF Graduate Group in Bioengineering, University of California, San Francisco, San Francisco, CA 94158, USA; Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Paul H Goldspink
- Department of Physiology & Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI 53226, USA.
| |
Collapse
|
39
|
Ouni M, Gunes Y, Belot MP, Castell AL, Fradin D, Bougnères P. The IGF1 P2 promoter is an epigenetic QTL for circulating IGF1 and human growth. Clin Epigenetics 2015; 7:22. [PMID: 25789079 PMCID: PMC4363053 DOI: 10.1186/s13148-015-0062-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 02/19/2015] [Indexed: 12/28/2022] Open
Abstract
Background Even if genetics play an important role, individual variation in stature remains unexplained at the molecular level. Indeed, genome-wide association study (GWAS) have revealed hundreds of variants that contribute to the variability of height but could explain only a limited part of it, and no single variant accounts for more than 0.3% of height variance. At the interface of genetics and environment, epigenetics contributes to phenotypic diversity. Quantifying the impact of epigenetic variation on quantitative traits, an emerging challenge in humans, has not been attempted for height. Since insulin-like growth factor 1 (IGF1) controls postnatal growth, we tested whether the CG methylation of the two promoters (P1 and P2) of the IGF1 gene is a potential epigenetic contributor to the individual variation in circulating IGF1 and stature in growing children. Results Child height was closely correlated with serum IGF1. The methylation of a cluster of six CGs located within the proximal part of the IGF1 P2 promoter showed a strong negative association with serum IGF1 and growth. The highest association was for CG-137 methylation, which contributed 13% to the variance of height and 10% to serum IGF1. CG methylation (studied in children undergoing surgery) was approximately 50% lower in liver and growth plates, indicating that the IGF1 promoters are tissue-differentially methylated regions (t-DMR). CG methylation was inversely correlated with the transcriptional activity of the P2 promoter in mononuclear blood cells and in transfection experiments, suggesting that the observed association of methylation with the studied traits reflects true biological causality. Conclusions Our observations introduce epigenetics among the individual determinants of child growth and serum IGF1. The P2 promoter of the IGF1 gene is the first epigenetic quantitative trait locus (QTLepi) reported in humans. The CG methylation of the P2 promoter takes place among the multifactorial factors explaining the variation in human stature. Electronic supplementary material The online version of this article (doi:10.1186/s13148-015-0062-8) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Meriem Ouni
- Institut National de la Santé et de la Recherche Médicale U986, Bicêtre Hospital, Paris Sud University, 80 rue du Général Leclerc Le Kremlin-Bicêtre, Paris, 94276 France
| | - Yasemin Gunes
- Institut National de la Santé et de la Recherche Médicale U986, Bicêtre Hospital, Paris Sud University, 80 rue du Général Leclerc Le Kremlin-Bicêtre, Paris, 94276 France
| | - Marie-Pierre Belot
- Institut National de la Santé et de la Recherche Médicale U986, Bicêtre Hospital, Paris Sud University, 80 rue du Général Leclerc Le Kremlin-Bicêtre, Paris, 94276 France
| | - Anne-Laure Castell
- Department of Pediatric Endocrinology and Diabetes, I3E Pole, Bicêtre Hospital, Paris Sud University, rue du Général Leclerc Le Kremlin-Bicêtre, Paris, 94276 France
| | - Delphine Fradin
- Institut National de la Santé et de la Recherche Médicale U986, Bicêtre Hospital, Paris Sud University, 80 rue du Général Leclerc Le Kremlin-Bicêtre, Paris, 94276 France
| | - Pierre Bougnères
- Institut National de la Santé et de la Recherche Médicale U986, Bicêtre Hospital, Paris Sud University, 80 rue du Général Leclerc Le Kremlin-Bicêtre, Paris, 94276 France ; Department of Pediatric Endocrinology and Diabetes, I3E Pole, Bicêtre Hospital, Paris Sud University, rue du Général Leclerc Le Kremlin-Bicêtre, Paris, 94276 France
| |
Collapse
|
40
|
Oberbauer AM. Developmental programming: the role of growth hormone. J Anim Sci Biotechnol 2015; 6:8. [PMID: 25774292 PMCID: PMC4358872 DOI: 10.1186/s40104-015-0001-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 01/20/2015] [Indexed: 12/30/2022] Open
Abstract
Developmental programming of the fetus has consequences for physiologic responses in the offspring as an adult and, more recently, is implicated in the expression of altered phenotypes of future generations. Some phenotypes, such as fertility, bone strength, and adiposity are highly relevant to food animal production and in utero factors that impinge on those traits are vital to understand. A key systemic regulatory hormone is growth hormone (GH), which has a developmental role in virtually all tissues and organs. This review catalogs the impact of GH on tissue programming and how perturbations early in development influence GH function.
Collapse
Affiliation(s)
- Anita M Oberbauer
- Department of Animal Science, University of California, One Shields Ave, Davis, CA 95616 USA
| |
Collapse
|
41
|
Tigges J, Krutmann J, Fritsche E, Haendeler J, Schaal H, Fischer JW, Kalfalah F, Reinke H, Reifenberger G, Stühler K, Ventura N, Gundermann S, Boukamp P, Boege F. The hallmarks of fibroblast ageing. Mech Ageing Dev 2014; 138:26-44. [PMID: 24686308 DOI: 10.1016/j.mad.2014.03.004] [Citation(s) in RCA: 150] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2013] [Revised: 03/11/2014] [Accepted: 03/18/2014] [Indexed: 12/26/2022]
Abstract
Ageing is influenced by the intrinsic disposition delineating what is maximally possible and extrinsic factors determining how that frame is individually exploited. Intrinsic and extrinsic ageing processes act on the dermis, a post-mitotic skin compartment mainly consisting of extracellular matrix and fibroblasts. Dermal fibroblasts are long-lived cells constantly undergoing damage accumulation and (mal-)adaptation, thus constituting a powerful indicator system for human ageing. Here, we use the systematic of ubiquitous hallmarks of ageing (Lopez-Otin et al., 2013, Cell 153) to categorise the available knowledge regarding dermal fibroblast ageing. We discriminate processes inducible in culture from phenomena apparent in skin biopsies or primary cells from old donors, coming to the following conclusions: (i) Fibroblasts aged in culture exhibit most of the established, ubiquitous hallmarks of ageing. (ii) Not all of these hallmarks have been detected or investigated in fibroblasts aged in situ (in the skin). (iii) Dermal fibroblasts aged in vitro and in vivo exhibit additional features currently not considered ubiquitous hallmarks of ageing. (iv) The ageing process of dermal fibroblasts in their physiological tissue environment has only been partially elucidated, although these cells have been a preferred model of cell ageing in vitro for decades.
Collapse
Affiliation(s)
- Julia Tigges
- Leibniz Research Institute for Environmental Medicine (IUF), Düsseldorf, Germany
| | - Jean Krutmann
- Leibniz Research Institute for Environmental Medicine (IUF), Düsseldorf, Germany
| | - Ellen Fritsche
- Leibniz Research Institute for Environmental Medicine (IUF), Düsseldorf, Germany
| | - Judith Haendeler
- Leibniz Research Institute for Environmental Medicine (IUF), Düsseldorf, Germany; Institute of Clinical Chemistry and Laboratory Diagnostics, Heinrich-Heine-University, Med. Faculty, Düsseldorf, Germany
| | - Heiner Schaal
- Center for Microbiology and Virology, Institute of Virology, Heinrich-Heine-University, Med. Faculty, D-40225 Düsseldorf, Germany
| | - Jens W Fischer
- Institute for Pharmacology and Clinical Pharmacology, Heinrich-Heine-University, Med. Faculty, Düsseldorf, Germany
| | - Faiza Kalfalah
- Institute of Clinical Chemistry and Laboratory Diagnostics, Heinrich-Heine-University, Med. Faculty, Düsseldorf, Germany
| | - Hans Reinke
- Leibniz Research Institute for Environmental Medicine (IUF), Düsseldorf, Germany; Institute of Clinical Chemistry and Laboratory Diagnostics, Heinrich-Heine-University, Med. Faculty, Düsseldorf, Germany
| | - Guido Reifenberger
- Department of Neuropathology, Heinrich-Heine-University, Med. Faculty, Düsseldorf, Germany
| | - Kai Stühler
- Institute for Molecular Medicine, Heinrich-Heine-University, Med. Faculty, Düsseldorf, Germany; Molecular Proteomics Laboratory, Centre for Biological and Medical Research (BMFZ), Heinrich-Heine-University, Düsseldorf, Germany
| | - Natascia Ventura
- Leibniz Research Institute for Environmental Medicine (IUF), Düsseldorf, Germany; Institute of Clinical Chemistry and Laboratory Diagnostics, Heinrich-Heine-University, Med. Faculty, Düsseldorf, Germany
| | | | - Petra Boukamp
- German Cancer Research Centre (DKFZ), Heidelberg, Germany
| | - Fritz Boege
- Institute of Clinical Chemistry and Laboratory Diagnostics, Heinrich-Heine-University, Med. Faculty, Düsseldorf, Germany.
| |
Collapse
|
42
|
Oberbauer A, Belanger J, Rincon G, Cánovas A, Islas-Trejo A, Gularte-Mérida R, Thomas M, Medrano J. Bovine and murine tissue expression of insulin like growth factor-I. Gene 2014; 535:101-5. [DOI: 10.1016/j.gene.2013.11.089] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Accepted: 11/30/2013] [Indexed: 11/25/2022]
|
43
|
The Influence of Growth Hormone on Bone and Adipose Programming. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 814:169-76. [DOI: 10.1007/978-1-4939-1031-1_15] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
44
|
Provenzano G, Clementi E, Genovesi S, Scali M, Tripathi PP, Sgadò P, Bozzi Y. GH Dysfunction in Engrailed-2 Knockout Mice, a Model for Autism Spectrum Disorders. Front Pediatr 2014; 2:92. [PMID: 25225635 PMCID: PMC4150208 DOI: 10.3389/fped.2014.00092] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 08/18/2014] [Indexed: 11/13/2022] Open
Abstract
Insulin-like growth factor 1 (IGF-1) signaling promotes brain development and plasticity. Altered IGF-1 expression has been associated to autism spectrum disorders (ASD). IGF-1 levels were found increased in the blood and decreased in the cerebrospinal fluid of ASD children. Accordingly, IGF-1 treatment can rescue behavioral deficits in mouse models of ASD, and IGF-1 trials have been proposed for ASD children. IGF-1 is mainly synthesized in the liver, and its synthesis is dependent on growth hormone (GH) produced in the pituitary gland. GH also modulates cognitive functions, and altered levels of GH have been detected in ASD patients. Here, we analyzed the expression of GH, IGF-1, their receptors, and regulatory hormones in the neuroendocrine system of adult male mice lacking the homeobox transcription factor Engrailed-2 (En2 (-/-) mice). En2 (-/-) mice display ASD-like behaviors (social interactions, defective spatial learning, increased seizure susceptibility) accompanied by relevant neuropathological changes (loss of cerebellar and forebrain inhibitory neurons). Recent studies showed that En2 modulates IGF-1 activity during postnatal cerebellar development. We found that GH mRNA expression was markedly deregulated throughout the neuroendocrine axis in En2 (-/-) mice, as compared to wild-type controls. In mutant mice, GH mRNA levels were significantly increased in the pituitary gland, blood, and liver, whereas decreased levels were detected in the hippocampus. These changes were paralleled by decreased levels of GH protein in the hippocampus but not other tissues of En2 (-/-) mice. IGF-1 mRNA was significantly up-regulated in the liver and down-regulated in the En2 (-/-) hippocampus, but no differences were detected in the levels of IGF-1 protein between the two genotypes. Our data strengthen the notion that altered GH levels in the hippocampus may be involved in learning disabilities associated to ASD.
Collapse
Affiliation(s)
- Giovanni Provenzano
- Laboratory of Molecular Neuropathology, Centre for Integrative Biology (CIBIO), University of Trento , Trento , Italy
| | - Elena Clementi
- Laboratory of Molecular Neuropathology, Centre for Integrative Biology (CIBIO), University of Trento , Trento , Italy
| | - Sacha Genovesi
- Laboratory of Molecular Neuropathology, Centre for Integrative Biology (CIBIO), University of Trento , Trento , Italy
| | - Manuela Scali
- Neuroscience Institute, National Research Council (CNR) , Pisa , Italy ; Laboratory of Neurobiology, Scuola Normale Superiore , Pisa , Italy
| | - Prem Prakash Tripathi
- Neuroscience Institute, National Research Council (CNR) , Pisa , Italy ; Laboratory of Neurobiology, Scuola Normale Superiore , Pisa , Italy
| | - Paola Sgadò
- Laboratory of Molecular Neuropathology, Centre for Integrative Biology (CIBIO), University of Trento , Trento , Italy
| | - Yuri Bozzi
- Laboratory of Molecular Neuropathology, Centre for Integrative Biology (CIBIO), University of Trento , Trento , Italy ; Neuroscience Institute, National Research Council (CNR) , Pisa , Italy
| |
Collapse
|
45
|
Willis EL, Wolf RF, White GL, McFarlane D. Age- and gender-associated changes in the concentrations of serum TGF-1β, DHEA-S and IGF-1 in healthy captive baboons (Papio hamadryas anubis). Gen Comp Endocrinol 2014; 195:21-7. [PMID: 24161750 PMCID: PMC3888644 DOI: 10.1016/j.ygcen.2013.10.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Revised: 10/04/2013] [Accepted: 10/10/2013] [Indexed: 12/27/2022]
Abstract
Age-related changes in the concentration of factors like TGF-1β, DHEA-S and IGF-1 may increase the risk of disease and illnesses in advanced life. A better understanding of these changes would aid in the development of more appropriate treatments and/or preventative care for many conditions associated with age. Due to their similar immune system and vulnerability to pathogens, baboons are an ideal model for humans. However, little research has been done examining the general effects of age in baboons. Therefore, we wanted to further examine the effects of aging in baboons by determining the age-dependent changes in serum TGF-1β, DHEA-S and IGF-1 concentrations. Blood samples were collected during routine health checks in 113-118 captive baboons. In addition, longitudinal samples from 23 to 27 adult individuals were collected an average of 10.7years apart. Both age and gender influenced the concentrations of serum TGF-1β and IGF-1. When both genders were analyzed together, TGF-1β increased 16.1% as adults, compared to younger and older animals, but male and female baboons showed a slightly different temporal pattern of change. IGF-1 decreased with increasing age and males had a 30% greater concentration of IGF-1 than did females. While there was no effect of gender among our population, serum DHEA-S was negatively correlated with age, decreasing by 51.6% in the oldest animals. There were no effects of age or gender on serum IGFBP-3. In longitudinal samples collected from the same individuals, the concentrations of TGF-1β, DHEA-S and IGF-1 were reduced with age. The results presented herein provide additional knowledge of the aging process in baboons and further validate the use of this species as an appropriate model for aging in humans.
Collapse
Affiliation(s)
- E L Willis
- Department of Physiological Sciences, Center of Veterinary Health Sciences, Oklahoma State University, Stillwater, OK, USA.
| | - R F Wolf
- Department of Comparative Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
| | - G L White
- Department of Comparative Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
| | - D McFarlane
- Department of Physiological Sciences, Center of Veterinary Health Sciences, Oklahoma State University, Stillwater, OK, USA.
| |
Collapse
|