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Čolić M, Miljuš N, Đokić J, Bekić M, Krivokuća A, Tomić S, Radojević D, Radanović M, Eraković M, Ismaili B, Škrbić R. Pomegranate Peel Extract Differently Modulates Gene Expression in Gingiva-Derived Mesenchymal Stromal Cells under Physiological and Inflammatory Conditions. Int J Mol Sci 2023; 24:15407. [PMID: 37895087 PMCID: PMC10607867 DOI: 10.3390/ijms242015407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 10/11/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023] Open
Abstract
Pomegranate has shown a favorable effect on gingivitis/periodontitis, but the mechanisms involved are poorly understood. The aim of this study was to test the effect of pomegranate peel extract (PoPEx) on gingiva-derived mesenchymal stromal cells (GMSCs) under physiological and inflammatory conditions. GMSC lines from healthy (H) and periodontitis (P) gingiva (n = 3 of each) were established. The lines were treated with two non-toxic concentrations of PoPEX (low-10; high-40 µg/mL), with or without additional lipopolysaccharide (LPS) stimulation. Twenty-four genes in GMSCs involved in different functions were examined using real-time polymerase chain reaction (RT-PCR). PoPEx (mostly at higher concentrations) inhibited the basal expression of IL-6, MCP-1, GRO-α, RANTES, IP-10, HIF-1α, SDF-1, and HGF but increased the expression of IL-8, TLR3, TGF-β, TGF-β/LAP ratio, IDO-1, and IGFB4 genes in H-GMSCs. PoPEx increased IL-6, RANTES, MMP3, and BMP2 but inhibited TLR2 and GRO-α gene expression in P-GMSCs. LPS upregulated genes for proinflammatory cytokines and chemokines, tissue regeneration/repair (MMP3, IGFBP4, HGF), and immunomodulation (IP-10, RANTES, IDO-1, TLR3, COX-2), more strongly in P-GMSCs. PoPEx also potentiated most genes' expression in LPS-stimulated P-GMSCs, including upregulation of osteoblastic genes (RUNX2, BMP2, COL1A1, and OPG), simultaneously inhibiting cell proliferation. In conclusion, the modulatory effects of PoPEx on gene expression in GMSCs are complex and dependent on applied concentrations, GMSC type, and LPS stimulation. Generally, the effect is more pronounced in inflammation-simulating conditions.
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Grants
- 451-03-68/2020-14/200019 Ministry of Education, Science and Technological Development, Republic of Serbia
- MFVMA/03/20-22 University of Defense in Belgrade, Medical Faculty of the Military Medical Academy, Belgrade, Serbia
- UIS/MFF: I.1.20-22 University of East Sarajevo, Medical Faculty Foča, Foča, Bosnia and Herzegovina
- N/A Medical Faculty Banja Luka, University of Banja Luka, Bosnia and Herzegovina
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Affiliation(s)
- Miodrag Čolić
- Serbian Academy of Sciences and Arts, 11000 Belgrade, Serbia
- Medical Faculty Foča, University of East Sarajevo, 73300 Foča, Bosnia and Herzegovina;
| | - Nataša Miljuš
- Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina; (N.M.); (A.K.); (R.Š.)
| | - Jelena Đokić
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, 11042 Belgrade, Serbia; (J.Đ.); (D.R.)
| | - Marina Bekić
- Institute for the Application of Nuclear Energy, University of Belgrade, 11080 Belgrade, Serbia; (M.B.); (S.T.)
| | - Aleksandra Krivokuća
- Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina; (N.M.); (A.K.); (R.Š.)
| | - Sergej Tomić
- Institute for the Application of Nuclear Energy, University of Belgrade, 11080 Belgrade, Serbia; (M.B.); (S.T.)
| | - Dušan Radojević
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, 11042 Belgrade, Serbia; (J.Đ.); (D.R.)
| | - Marina Radanović
- Medical Faculty Foča, University of East Sarajevo, 73300 Foča, Bosnia and Herzegovina;
| | - Mile Eraković
- Clinic for Stomatology, Medical Faculty of the Military Medical Academy, University of Defense, 11154 Belgrade, Serbia;
| | - Bashkim Ismaili
- Faculty of Dental Medicine, International Balkan University, 1000 Skopje, North Macedonia;
| | - Ranko Škrbić
- Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina; (N.M.); (A.K.); (R.Š.)
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Piau TB, de Queiroz Rodrigues A, Paulini F. Insulin-like growth factor (IGF) performance in ovarian function and applications in reproductive biotechnologies. Growth Horm IGF Res 2023; 72-73:101561. [PMID: 38070331 DOI: 10.1016/j.ghir.2023.101561] [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: 08/02/2023] [Revised: 11/25/2023] [Accepted: 11/30/2023] [Indexed: 12/18/2023]
Abstract
The role of the insulin-like growth factor (IGF) system has attracted close attention. The activity of IGF binding proteins (IGFBPs) within the ovary has not been fully elucidated to date. These proteins bind to IGF with an equal, or greater, affinity than to the IGF1 receptor, thus being in the main position to regulate IGF signalling, in addition to extending the half-life of IGFs within the bloodstream and promoting IGF storage in specific tissue niches. IGF1 has an important part in cell proliferation, differentiation and apoptosis. Considering the importance of IGFs in oocyte maturation, this review sought to elucidate aspects including: IGF production mechanisms; constituent members of their family and their respective functions; the role that these factors play during folliculogenesis, together with their functions during oocyte maturation and apoptosis, and their performance during luteal development. This review also explores the role of IGFs in biotechnological applications, focusing specifically on animal genetic gain.
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Affiliation(s)
- Tathyana Benetis Piau
- University of Brasília, Institute of Biological Sciences, Department of Physiological Sciences, Brasília, DF 70910-900, Brazil
| | - Aline de Queiroz Rodrigues
- University of Brasília, Institute of Biological Sciences, Department of Physiological Sciences, Brasília, DF 70910-900, Brazil
| | - Fernanda Paulini
- University of Brasília, Institute of Biological Sciences, Department of Physiological Sciences, Brasília, DF 70910-900, Brazil.
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Ock J, Suh JK, Hong SS, Kang JH, Yin GN, Ryu JK. IGFBP5 antisense and short hairpin RNA (shRNA) constructs improve erectile function by inducing cavernosum angiogenesis in diabetic mice. Andrology 2023; 11:358-371. [PMID: 35866351 PMCID: PMC10087557 DOI: 10.1111/andr.13234] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 05/17/2022] [Accepted: 05/26/2022] [Indexed: 01/18/2023]
Abstract
BACKGROUND The incidence of diabetic erectile dysfunction (ED) is rapidly increasing, and due to the severe angiopathy caused by diabetes, current drugs are ineffective at treating ED. Insulin-like growth factor-binding protein 5 (IGFBP5) promotes cell death and induces apoptosis in various cell types. OBJECTIVES To evaluate the effectiveness of IGFBP5 knockdown in improving erectile function in diabetic mice. MATERIALS AND METHODS Diabetes was induced by injecting streptozotocin (STZ) intraperitoneally into male 8-week-old C57BL/6 mice. Eight weeks after diabetes induction, mice were divided into four groups: a nondiabetic control group and three STZ-induced diabetic mice groups, which were administered intracavernous injections of phosphate buffered saline, scrambled control shRNA, or shRNA targeting mouse IGFBP5 (shIGFBP5) lentivirus particles. Two weeks later, we measured erectile function by electrically stimulating the bilateral cavernous nerve. To mimic diabetic angiopathy, primary cavernous endothelial cells (MCECs) from healthy mice were cultured and treated with glucose. RESULTS IGFBP5 expression in MCECs or cavernous tissues were significantly increased under diabetic conditions, and knockdown of IGFBP5 induced MCECs angiogenic activity under high-glucose conditions. STZ-induced diabetic mice had reduced erectile function, but shIGFBP5 treatment resulted in significant improvements (to 90% of the nondiabetic control group level). Furthermore, in diabetic mice, numbers of cavernous endothelial cells, pericytes, and neuronal cells were increased by shIGFBP5 treatment, which also increased eNOS Ser1177 phosphorylation, decreased permeability and apoptosis of cavernous endothelial cells. In addition, IGFBP5 was found to mediate the AKT, ERK, p38 signaling pathways. DISCUSSION AND CONCLUSION Knockdown of IGFBP5 improved erectile function in diabetic mice by promoting cell proliferation and reducing apoptosis and permeability. Local inhibition of IGFBP5 expression may provide a new treatment strategy for diabetic ED and other ischemic vascular or neurological diseases.
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Affiliation(s)
- Jiyeon Ock
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
| | - Jun-Kyu Suh
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
| | - Soon-Sun Hong
- Department of Biomedical Sciences, College of Medicine, and Program in Biomedical Science and Engineering, Inha University, Incheon, Republic of Korea
| | - Ju-Hee Kang
- Department of Pharmacology and Medicinal Toxicology Research Center, Inha University College of Medicine, Incheon, Republic of Korea
| | - Guo Nan Yin
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
| | - Ji-Kan Ryu
- National Research Center for Sexual Medicine and Department of Urology, Inha University School of Medicine, Incheon, Republic of Korea
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Du H, Zhou Y, Du X, Zhang P, Cao Z, Sun Y. Insulin-like growth factor binding protein 5b of Trachinotus ovatus and its heparin-binding motif play a critical role in host antibacterial immune responses via NF-κB pathway. Front Immunol 2023; 14:1126843. [PMID: 36865533 PMCID: PMC9972581 DOI: 10.3389/fimmu.2023.1126843] [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: 12/18/2022] [Accepted: 01/25/2023] [Indexed: 02/16/2023] Open
Abstract
Introduction Insulin-like growth factor binding protein 5 (IGFBP5) exerts an essential biological role in many processes, including apoptosis, cellular differentiation, growth, and immune responses. However, compared to mammalians, our knowledge of IGFBP5 in teleosts remains limited. Methods In this study, TroIGFBP5b, an IGFBP5 homologue from golden pompano (Trachinotus ovatus) was identified. Quantitative real-time PCR (qRT-PCR) was used to check its mRNA expression level in healthy condition and after stimulation. In vivo overexpression and RNAi knockdown method were performed to evaluate the antibacterial profile. We constructed a mutant in which HBM was deleted to better understand the mechanism of its role in antibacterial immunity. Subcellular localization and nuclear translocation were verified by immunoblotting. Further, proliferation of head kidney lymphocytes (HKLs) and phagocytic activity of head kidney macrophages (HKMs) were detected through CCK-8 assay and flow cytometry. Immunofluorescence microscopy assay (IFA) and dual luciferase reporter (DLR) assay were used to evaluate the activity in nuclear factor-κB (NF-κβ) pathway. Results The TroIGFBP5b mRNA expression level was upregulated after bacterial stimulation. In vivo, TroIGFBP5b overexpression significantly improved the antibacterial immunity of fish. In contrast, TroIGFBP5b knockdown significantly decreased this ability. Subcellular localization results showed that TroIGFBP5b and TroIGFBP5b-δHBM were both present in the cytoplasm of GPS cells. After stimulation, TroIGFBP5b-δHBM lost the ability to transfer from the cytoplasm to the nucleus. In addition, rTroIGFBP5b promoted the proliferation of HKLs and phagocytosis of HKMs, whereas rTroIGFBP5b-δHBM, suppressed these facilitation effects. Moreover, the in vivo antibacterial ability of TroIGFBP5b was suppressed and the effects of promoting expression of proinflammatory cytokines in immune tissues were nearly lost after HBM deletion. Furthermore, TroIGFBP5b induced NF-κβ promoter activity and promoted nuclear translocation of p65, while these effects were inhibited when the HBM was deleted. Discussion Taken together, our results suggest that TroIGFBP5b plays an important role in golden pompano antibacterial immunity and activation of the NF-κβ signalling pathway, providing the first evidence that the HBM of TroIGFBP5b plays a critical role in these processes in teleosts.
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Affiliation(s)
- Hehe Du
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China.,Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, China
| | - Yongcan Zhou
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China.,Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, China.,Collaborative Innovation Center of Marine Science and Technology, Hainan University, Haikou, China
| | - Xiangyu Du
- Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, China
| | - Panpan Zhang
- Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, China
| | - Zhenjie Cao
- Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, China
| | - Yun Sun
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, China.,Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, China.,Collaborative Innovation Center of Marine Science and Technology, Hainan University, Haikou, China
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Nojima I, Hosoda R, Toda Y, Saito Y, Ueda N, Horimoto K, Iwahara N, Horio Y, Kuno A. Downregulation of IGFBP5 contributes to replicative senescence via ERK2 activation in mouse embryonic fibroblasts. Aging (Albany NY) 2022; 14:2966-2988. [PMID: 35378512 PMCID: PMC9037271 DOI: 10.18632/aging.203999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 03/23/2022] [Indexed: 11/29/2022]
Abstract
Insulin-like growth factor (IGF)-binding proteins (IGFBPs) are secretory proteins that regulate IGF signaling. In this study, we investigated the role of IGFBP5 in replicative senescence in embryonic mouse fibroblasts (MEFs). During passages according to the 3T3 method, MEFs underwent senescence after the 5th passage (P5) based on cell growth arrest, an increase in the number of cells positive for senescence-associated β-galactosidase (SA-β-GAL) staining, and upregulation of p16 and p19. In P8 MEFs, IGFBP5 mRNA level was markedly reduced compared with that in P2 MEFs. Downregulation of IGFBP5 via siRNA in P2 MEFs increased the number of SA-β-GAL-positive cells, upregulated p16 and p19, and inhibited cell growth. Incubation of MEFs with IGFBP5 during serial passage increased the cumulative population doubling and decreased SA-β-GAL positivity compared with those in vehicle-treated cells. IGFBP5 knockdown in P2 MEFs increased phosphorylation levels of ERK1 and ERK2. Silencing of ERK2, but not that of ERK1, blocked the increase in the number of SA-β-GAL-positive cells in IGFBP5-knockdown cells. The reduction in the cell number and upregulation of p16 and p21 in IGFBP5-knockdown cells were attenuated by ERK2 knockdown. Our results suggest that downregulation of IGFBP5 during serial passage contributes to replicative senescence via ERK2 in MEFs.
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Affiliation(s)
- Iyori Nojima
- Department of Pharmacology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Ryusuke Hosoda
- Department of Pharmacology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yuki Toda
- Department of Pharmacology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yoshiki Saito
- Department of Pharmacology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Naohiro Ueda
- Department of Pharmacology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Kouhei Horimoto
- Department of Pharmacology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Naotoshi Iwahara
- Department of Pharmacology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yoshiyuki Horio
- Department of Pharmacology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Atsushi Kuno
- Department of Pharmacology, Sapporo Medical University School of Medicine, Sapporo, Japan
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Wang Z, Xia Q, Su W, Cao M, Sun Y, Zhang M, Chen W, Jiang T. Exploring the Communal Pathogenesis, Ferroptosis Mechanism, and Potential Therapeutic Targets of Dilated Cardiomyopathy and Hypertrophic Cardiomyopathy via a Microarray Data Analysis. Front Cardiovasc Med 2022; 9:824756. [PMID: 35282347 PMCID: PMC8907834 DOI: 10.3389/fcvm.2022.824756] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 01/20/2022] [Indexed: 12/13/2022] Open
Abstract
Background Cardiomyopathies are a heterogeneous group of heart diseases that can gradually cause severe heart failure. In particular, dilated cardiomyopathy (DCM) and hypertrophic cardiomyopathy (HCM) are the two main types of cardiomyopathies, yet the independent and communal biological mechanisms of both remain far from elucidated. Meanwhile, ferroptosis is a non-apoptotic form of cell death that has been proven to be associated with cardiomyopathies, but the concrete nature of the interaction remains unclear. Hence, this study explored the pathogenesis and ferroptosis mechanism of HCM and DCM via a bioinformatics analysis. Methods Six datasets were downloaded from the Gene Expression Omnibus (GEO) database based on the study inclusion/exclusion criteria. After screening the differentially expressed genes (DEGs) and hub genes of HCM and DCM, subsequent analyses, including functional annotation, co-expression, validation, and transcription factors (TF)–mRNA–microRNA (miRNA) regulatory network construction, were performed. In addition, ferroptosis-related DEGs were also identified and verified in HCM and DCM. Results We found 171 independent DEGs of HCM mainly enriched in the regulation of ERK1 and ERK2 cascade, while 171 independent DEGs of DCM were significantly involved in cell adhesion. Meanwhile, 32 communal DEGs (26 upregulated genes and 6 downregulated genes) and 3 hub genes [periostin (POSTN), insulin-like growth factor-binding protein-5 (IGFBP5), and fibromodulin (FMOD)] were determined to be shared between HCM and DCM and the functional annotation of these genes highlighted the important position of growth hormone in HCM and DCM. Moreover, we identified activating transcription factor 3 (ATF3), lysophosphatidylcholine acyltransferase 3 (LPCAT3), and solute carrier family 1 member 5 (SLC1A5) as ferroptosis-related genes in HCM and STAT3 as a ferroptosis-related gene in DCM. Conclusion The identified independent and communal DEGs contribute to uncover a potentially distinct and common mechanism of HCM and DCM and ferroptosis-related genes could provide us with a novel direction for exploration. In addition, 3 hub genes could be potential biomarkers or therapeutic targets in patients with cardiomyopathy.
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Affiliation(s)
- Zuoxiang Wang
- Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, China
- Department of Medicine, Soochow University, Suzhou, China
| | - Qingyue Xia
- Department of Dermatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wenxing Su
- Department of Plastic and Burn Surgery, The Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, China
| | - Mingqiang Cao
- Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yunjuan Sun
- Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Mingyang Zhang
- Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, China
- Department of Medicine, Soochow University, Suzhou, China
| | - Weixiang Chen
- Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, China
- *Correspondence: Weixiang Chen
| | - Tingbo Jiang
- Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, China
- Tingbo Jiang
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Pohlman AW, Moudgalya H, Jordano L, Lobato GC, Gerard D, Liptay MJ, Seder CW, Borgia JA. The role of IGF-pathway biomarkers in determining risks, screening, and prognosis in lung cancer. Oncotarget 2022; 13:393-407. [PMID: 35198099 PMCID: PMC8858079 DOI: 10.18632/oncotarget.28202] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 02/07/2022] [Indexed: 11/25/2022] Open
Abstract
Background: Detection rates of early-stage lung cancer are traditionally low, which contributes to inconsistent treatment responses and high rates of annual cancer deaths. Currently, low-dose computed tomography (LDCT) screening produces a high false discovery rate. This limitation has prompted research to identify biomarkers to more clearly define eligible patients for LDCT screening, differentiate indeterminate pulmonary nodules, and select individualized cancer therapy. Biomarkers within the Insulin-like Growth Factor (IGF) family have come to the forefront of this research. Main Body: Multiple biomarkers within the IGF family have been investigated, most notably IGF-I and IGF binding protein 3. However, newer studies seek to expand this search to other molecules within the IGF axis. Certain studies have demonstrated these biomarkers are useful when used in combination with lung cancer screening, but other findings were not as conclusive, possibly owing to measurement bias and non-standardized assay techniques. Research also has suggested IGF biomarkers may be beneficial in the prognostication and subsequent treatment via systemic therapy. Despite these advances, additional knowledge of complex regulatory mechanisms inherent to this system are necessary to more fully harness the potential clinical utility for diagnostic and therapeutic purposes. Conclusions: The IGF system likely plays a role in multiple phases of lung cancer; however, there is a surplus of conflicting data, especially prior to development of the disease and during early stages of detection. IGF biomarkers may be valuable in the screening, prognosis, and treatment of lung cancer, though their exact application requires further study.
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Affiliation(s)
| | - Hita Moudgalya
- Department of Anatomy and Cell Biology, Rush University Medical Center, Chicago, IL 60612, USA
| | - Lia Jordano
- Department of General Surgery, Rush University Medical Center, Chicago, IL 60612, USA
| | - Gabriela C. Lobato
- Department of Biochemistry, Rush University Medical Center, Chicago, IL 60612, USA
| | - David Gerard
- Department of Anatomy and Cell Biology, Rush University Medical Center, Chicago, IL 60612, USA
| | - Michael J. Liptay
- Department of Cardiovascular and Thoracic Surgery, Rush University Medical Center, Chicago, IL 60612, USA
| | - Christopher W. Seder
- Department of Cardiovascular and Thoracic Surgery, Rush University Medical Center, Chicago, IL 60612, USA
| | - Jeffrey A. Borgia
- Department of Anatomy and Cell Biology, Rush University Medical Center, Chicago, IL 60612, USA
- Department of Biochemistry, Rush University Medical Center, Chicago, IL 60612, USA
- Department of Pathology, Rush University Medical Center, Chicago, IL 60612, USA
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8
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Bashir NZ. The role of insulin-like growth factors in modulating the activity of dental mesenchymal stem cells. Arch Oral Biol 2020; 122:104993. [PMID: 33259987 DOI: 10.1016/j.archoralbio.2020.104993] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 11/14/2020] [Accepted: 11/19/2020] [Indexed: 12/27/2022]
Abstract
Regenerative treatment protocols are an exciting prospect in the management of oral pathology, as they allow for tissues to be restored to their original form and function, as compared to the reparative healing mechanisms which currently govern the outcomes of the majority of dental treatment. Stem cell therapy presents with a great deal of untapped potential in this pursuit of tissue regeneration, and, in particular, mesenchymal stem cells (MSCs) derived from dental tissues are of specific relevance with regards to their applications in engineering craniofacial tissues. A number of mediatory factors are involved in modulating the actions of dental MSCs, and, of these, insulin like growth factors (IGFs) are known to have potent effects in governing the behavior of these cells. The IGF family comprises a number of primary ligands, receptors, and binding proteins which are known to modulate the key properties of dental MSCs, such as their proliferation rates, differentiation potential, and mineralisation. The aims of this review are three-fold: (i) to present an overview of dental MSCs and the role of growth factors in modulating their characteristics, (ii) to discuss in greater detail the specific role of IGFs and the benefits they may convey for tissue engineering, and (iii) to provide a summary of potential for in vivo clinical translation of the current in vitro body of evidence.
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9
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Wang G, Yu Y, Cai W, Batista TM, Suk S, Noh HL, Hirshman M, Nigro P, Li ME, Softic S, Goodyear L, Kim JK, Kahn CR. Muscle-Specific Insulin Receptor Overexpression Protects Mice From Diet-Induced Glucose Intolerance but Leads to Postreceptor Insulin Resistance. Diabetes 2020; 69:2294-2309. [PMID: 32868340 PMCID: PMC7576573 DOI: 10.2337/db20-0439] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 08/25/2020] [Indexed: 12/22/2022]
Abstract
Skeletal muscle insulin resistance is a prominent early feature in the pathogenesis of type 2 diabetes. In attempt to overcome this defect, we generated mice overexpressing insulin receptors (IR) specifically in skeletal muscle (IRMOE). On normal chow, IRMOE mice have body weight similar to that of controls but an increase in lean mass and glycolytic muscle fibers and reduced fat mass. IRMOE mice also show higher basal phosphorylation of IR, IRS-1, and Akt in muscle and improved glucose tolerance compared with controls. When challenged with high-fat diet (HFD), IRMOE mice are protected from diet-induced obesity. This is associated with reduced inflammation in fat and liver, improved glucose tolerance, and improved systemic insulin sensitivity. Surprisingly, however, in both chow and HFD-fed mice, insulin-stimulated Akt phosphorylation is significantly reduced in muscle of IRMOE mice, indicating postreceptor insulin resistance. RNA sequencing reveals downregulation of several postreceptor signaling proteins that contribute to this resistance. Thus, enhancing early insulin signaling in muscle by overexpression of the IR protects mice from diet-induced obesity and its effects on glucose metabolism. However, chronic overstimulation of this pathway leads to postreceptor desensitization, indicating the critical balance between normal signaling and hyperstimulation of the insulin signaling pathway.
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Affiliation(s)
- Guoxiao Wang
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Yingying Yu
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Weikang Cai
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA
- Department of Biomedical Sciences, New York Institute of Technology College of Osteopathic Medicine, Old Westbury, NY
| | - Thiago M Batista
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Sujin Suk
- Program in Molecular Medicine and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, MA
| | - Hye Lim Noh
- Program in Molecular Medicine and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, MA
| | - Michael Hirshman
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Pasquale Nigro
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Mengyao Ella Li
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Samir Softic
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA
- Divisions of Pediatric Gastroenterology and Pharmacology and Nutritional Sciences, University of Kentucky College of Medicine, Lexington, KY
| | - Laurie Goodyear
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA
| | - Jason K Kim
- Program in Molecular Medicine and Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Massachusetts Medical School, Worcester, MA
| | - C Ronald Kahn
- Section on Integrative Physiology and Metabolism, Joslin Diabetes Center, Harvard Medical School, Boston, MA
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Saini M, Jha AN, Tangri R, Qudratullah M, Ali S. MN1 overexpression with varying tumor grade is a promising predictor of survival of glioma patients. Hum Mol Genet 2020; 29:3532-3545. [PMID: 33105486 PMCID: PMC7788295 DOI: 10.1093/hmg/ddaa231] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Revised: 10/10/2020] [Accepted: 10/12/2020] [Indexed: 12/31/2022] Open
Abstract
Gliomas have substantial mortality to incidence rate ratio and a dismal clinical course. Newer molecular insights, therefore, are imperative to refine glioma diagnosis, prognosis and therapy. Meningioma 1 (MN1) gene is a transcriptional co-regulator implicated in other malignancies, albeit its significance in glioma pathology remains to be explored. IGFBP5 is regulated transcriptionally by MN1 and IGF1 and is associated with higher glioma grade and shorter survival time, prompting us to ascertain their correlation in these tumors. We quantified the expression of MN1, IGFBP5 and IGF1 in 40 glioma samples and examined their interrelatedness. MN1 mRNA-protein inter-correlation and the gene’s copy number were evaluated in these tumors. Publicly available TCGA datasets were used to examine the association of MN1 expression levels with patient survival and for validating our findings. We observed MN1 overexpression correlated with low-grade (LGGs) and not high-grade gliomas and is not determined by the copy number alteration of the gene. Notably, gliomas with upregulated MN1 have better overall survival (OS) and progression-free survival (PFS). IGFBP5 expression associated inversely with MN1 expression levels in gliomas but correlated positively with IGF1 expression in only LGGs. This suggests a potential grade-specific interplay between repressive and activating roles of MN1 and IGF1, respectively, in the regulation of IGFBP5. Thus, MN1 overexpression, a promising predictor of OS and PFS in gliomas, may serve as a prognostic biomarker in clinical practice to categorize patients with survival advantage.
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Affiliation(s)
- Masum Saini
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India.,Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad 121001, India
| | - Ajaya Nand Jha
- Max Super Specialty Hospital, 1, Press Enclave Road, Saket, New Delhi 110017, India
| | - Rajiv Tangri
- Max Super Specialty Hospital, 1, Press Enclave Road, Saket, New Delhi 110017, India.,Dr. Lal PathLabs, National Reference Laboratory, Sector 18, Rohini, New Delhi 110085, India
| | - Md Qudratullah
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Sher Ali
- National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India.,Department of Life Sciences, SBSR, Sharda University, KP-III, Greater Noida 201310, India
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11
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Ji Y, Zhang W, Yang J, Li C. MiR-193b inhibits autophagy and apoptosis by targeting IGFBP5 in high glucose-induced trophoblasts. Placenta 2020; 101:185-193. [PMID: 33010605 DOI: 10.1016/j.placenta.2020.09.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 09/08/2020] [Accepted: 09/14/2020] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Inhibiting apoptosis of trophoblasts in women with gestational diabetes mellitus (GDM) is expected to guarantee adequate nutrition for the fetus and avoid abortion. MiR-193b is one of the most downregulated miRNAs in GDM patients. However, less is known about the role of miR-193b in autophagy and apoptosis in GDM patients. METHODS We detected the expression of miR-193b in GDM patients. Then, we cultured human trophoblasts (HTR8 cells) with high glucose (HG) to simulate a diabetic environment in vitro, and further explored the effects of miR-193b on apoptosis and autophagy of HG-treated HTR8 cells. RESULTS The expression of miR-193b was significantly downregulated in the peripheral blood of GDM patients compared with healthy controls, and decreased miR-193b caused apparent autophagy and a substantially high apoptosis rate in HG-treated HTR8 cells. These effects were reversed by enhancing miR-193b expression or using the autophagy inhibitor 3-MA. Inhibiting miR-193b induced the pro-autophagic, cytostatic, and pro-apoptotic effects reduced by 3-MA in HTR8 cells upon HG treatment. Moreover, the expression of insulin-like growth factor-binding protein 5 (IGFBP5) was upregulated notably in the peripheral blood of GDM patients, and IGFBP5 appears to represent a direct miR-193b target. Note that silencing IGFBP5 blocked autophagy and apoptosis in HG-treated HTR8 cells, an effect that was diminished by inhibiting miR-193b. CONCLUSION Our data indicate that aberrantly low expression of miR-193b in HG-induced trophoblasts results in massive apoptosis events by upregulating IGFBP5-induced autophagy, which may trigger GDM. Therefore, miR-193b may became a potential target for GDM therapy.
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Affiliation(s)
- Yanting Ji
- Department of Obstetrics and Gynecology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China; Department of Obstetrics and Gynecology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong, China
| | - Wenfeng Zhang
- Department of Obstetrics and Gynecology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong, China
| | - Jin Yang
- Department of Obstetrics and Gynecology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong, China
| | - Changzhong Li
- Department of Obstetrics and Gynecology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China.
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12
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Duan C, Allard JB. Insulin-Like Growth Factor Binding Protein-5 in Physiology and Disease. Front Endocrinol (Lausanne) 2020; 11:100. [PMID: 32194505 PMCID: PMC7063065 DOI: 10.3389/fendo.2020.00100] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 02/17/2020] [Indexed: 12/25/2022] Open
Abstract
Insulin-like growth factor (IGF) signaling is regulated by a conserved family of IGF binding proteins (IGFBPs) in vertebrates. Among the six distinct types of IGFBPs, IGFBP-5 is the most highly conserved across species and has the broadest range of biological activities. IGFBP-5 is expressed in diverse cell types, and its expression level is regulated by a variety of signaling pathways in different contexts. IGFBP-5 can exert a range of biological actions including prolonging the half-life of IGFs in the circulation, inhibition of IGF signaling by competing with the IGF-1 receptor for ligand binding, concentrating IGFs in certain cells and tissues, and potentiation of IGF signaling by delivery of IGFs to the IGF-1 receptor. IGFBP-5 also has IGF-independent activities and is even detected in the nucleus. Its broad biological activities make IGFBP-5 an excellent representative for understanding IGFBP functions. Despite its evolutionary conservation and numerous biological activities, knockout of IGFBP-5 in mice produced only a negligible phenotype. Recent research has begun to explain this paradox by demonstrating cell type-specific and physiological/pathological context-dependent roles for IGFBP-5. In this review, we survey and discuss what is currently known about IGFBP-5 in normal physiology and human disease. Based on recent in vivo genetic evidence, we suggest that IGFBP-5 is a multifunctional protein with the ability to act as a molecular switch to conditionally regulate IGF signaling.
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13
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Insulin-Like Growth Factor Binding Protein 5-A Probable Target of Kidney Renal Papillary Renal Cell Carcinoma. BIOMED RESEARCH INTERNATIONAL 2019; 2019:3210324. [PMID: 31886201 PMCID: PMC6925670 DOI: 10.1155/2019/3210324] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 07/30/2019] [Accepted: 08/06/2019] [Indexed: 12/17/2022]
Abstract
Kidney renal papillary renal cell carcinoma (KIRP) accounts for 10-15% of renal cell carcinoma (RCC). The need to find more therapeutic targets for KIRP is urgent because most targeted drugs have limited effects on advanced KIRP. Insulin-like growth factor (IGF) binding protein 5 (IGFBP5) is a secreted protein related to cell proliferation, cell adhesion, cell migration, the inflammatory response and fibrosis; these functions are independent of IGF. In our study, we determined the expression and functions of IGFBP5 with data from the database of The Cancer Genome Atlas (TCGA). We found that IGFBP5 is down regulated in KIRP kidney tissues compared to its expression in control tissues and that the expression of IGFBP5 is negatively related to patient survival. Bioinformatic analysis showed the probable processes and pathways involved in altered IGFBP5 expression, including blood vessel development, the cellular response to growth factor stimulus, the response to transforming growth factor β (TGF-β), and extracellular matrix organization. We proposed that VEGFA and TGF-β act as upstream regulatory factors of IGFBP5 and verified this in the Caki-2 cell line. Based on our results, we suggest that IGFBP5 might be a therapeutic target of KIRP.
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14
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Li J, Diao S, Yang H, Cao Y, Du J, Yang D. IGFBP5 promotes angiogenic and neurogenic differentiation potential of dental pulp stem cells. Dev Growth Differ 2019; 61:457-465. [PMID: 31599466 DOI: 10.1111/dgd.12632] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 08/29/2019] [Accepted: 09/17/2019] [Indexed: 12/26/2022]
Abstract
Dental stem cells for dental pulp regeneration have become a new strategy for pulpitis treatment. Angiogenesis and neurogenesis play a vital role in the pulp-dentin complex regeneration, and appropriate growth factors will promote the process of angiogenesis and neurogenesis. Insulin-like growth factor-binding protein 5 (IGFBP5) is involved in the regulation of tooth growth and development. A previous study showed that IGFBP5 enhanced osteo/odontogenic differentiation of dental stem cells. Our research intends to reveal the function of IGFBP5 in the angiogenic and neurogenic differentiation of human dental stem cells. Human dental pulp stem cells (DPSCs) were used in the present study. Lentiviral IGFBP5 shRNA was used to silence the IGFBP5. Retroviruses expressing Wild-type IGFBP5 were used to over-express IGFBP5. Angiogenic and neurogenic differentiation were carried out by in vitro study. Real-time RT-PCR and western blot results showed that over-expression of IGFBP5 upregulated the expressions of angiogenic markers, including VEGF, PDGFA and ANG-1, and neurogenic markers, including NCAM, TH, Nestin, βIII-tubulin, and TH, in DPSCs. Moreover, microscope observation confirmed that over-expression of IGFBP5 enhanced neurosphere formation in DPSCs in size and amount. Immunofluorescence staining results showed that over-expression of IGFBP5 also prompted the percentage of Nestin and βIII-tubulin positive neurospheres in DPSCs. While depletion of IGFBP5 downregulated the expressions of VEGF, PDGFA, ANG-1, NCAM, TH, Nestin, βIII-tubulin, and TH, it decreased the neurosphere formation and percentage of Nestin and βIII-tubulin positive neurospheres in DPSCs. In conclusion, our results revealed that IGFBP5 promoted angiogenic and neurogenic differentiation potential of DPSCs in vitro and provided the possible potential target for enhancing directed differentiation of dental stem cells and dental pulp-dentin functional regeneration.
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Affiliation(s)
- Jing Li
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology Capital Medical University, Beijing, China.,Department of Preventive Dentistry, Beijing Stomatological Hospital,Capital Medical University, Beijing, China
| | - Shu Diao
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology Capital Medical University, Beijing, China.,Department of Pediatric Dentistry, Beijing Stomatological Hospital,Capital Medical University, Beijing, China
| | - Haoqing Yang
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology Capital Medical University, Beijing, China
| | - Yangyang Cao
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology Capital Medical University, Beijing, China
| | - Juan Du
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology Capital Medical University, Beijing, China.,Molecular Laboratory for Gene Therapy and Tooth Regeneration, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, school of Stomatology Capital Medical University, Beijing, China
| | - Dongmei Yang
- Department of Pediatric Dentistry, Beijing Stomatological Hospital,Capital Medical University, Beijing, China
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15
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Nowak M, Rehrauer H, Ay SS, Findik M, Boos A, Kautz E, Kowalewski MP. Gene expression profiling of the canine placenta during normal and antigestagen-induced luteolysis. Gen Comp Endocrinol 2019; 282:113194. [PMID: 31145892 DOI: 10.1016/j.ygcen.2019.05.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 05/23/2019] [Accepted: 05/26/2019] [Indexed: 12/20/2022]
Abstract
The domestic dog is the only domestic animal species that does not produce steroids in the placenta and instead relies on luteal steroids throughout pregnancy. Nevertheless, the canine placenta is highly responsive to steroids, and withdrawal of progesterone (P4) affects the feto-maternal unit, initializing the parturition cascade. Similar effects can be observed during antigestagen-induced abortion. Here, aiming to provide new insights into mechanisms involved in the termination of canine pregnancy, next generation sequencing (NGS, RNA-seq) was applied. Placental transcriptomes derived from natural prepartum and antigestagen-induced abortions were analyzed and compared with fully developed mid-gestation placentas. The contrast "prepartum luteolysis over mid-gestation" revealed 1973 differentially expressed genes (DEG). Terms associated with apoptosis, impairment of vascular function and activation of signaling of several cytokines (e.g., IL-8, IL-3, TGF-β) were overrepresented at natural luteolysis. When compared with mid-term, antigestagen treatment revealed 135 highly regulated DEG that were involved in the induced luteolysis and showed similar associations with functional terms and expression patterns as during natural luteolysis. The contrast "antigestagen-induced luteolysis over prepartum luteolysis" revealed that, although similar changes occur in both conditions, they are more pronounced during natural prepartum. Among P4-regulated DEG were those related to immune system and cortisol metabolism. It appears that, besides inducing placental PGF2α output, both natural and induced P4 withdrawal is associated with disruption of the feto-maternal interface, leading to impaired vascular functions, apoptosis and controlled modulation of the immune response. The time-related maturation of the feto-maternal interface needs to be considered because it may be clinically relevant.
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Affiliation(s)
- Marta Nowak
- Institute of Veterinary Anatomy, Vetsuisse Faculty, University of Zurich (UZH), Zurich, Switzerland
| | - Hubert Rehrauer
- Functional Genomics Center Zurich (FGCZ), ETH Zurich/University of Zurich, Zurich, Switzerland
| | - Serhan S Ay
- Department of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, University of Ondokuz Mayis, Samsun, Turkey
| | - Murat Findik
- Department of Obstetrics and Gynaecology, Faculty of Veterinary Medicine, University of Ondokuz Mayis, Samsun, Turkey
| | - Alois Boos
- Institute of Veterinary Anatomy, Vetsuisse Faculty, University of Zurich (UZH), Zurich, Switzerland
| | - Ewa Kautz
- Department of Large Animal Diseases with Clinic, Faculty of Veterinary Medicine, Warsaw University of Life Sciences (SGGW), Warsaw, Poland
| | - Mariusz P Kowalewski
- Institute of Veterinary Anatomy, Vetsuisse Faculty, University of Zurich (UZH), Zurich, Switzerland.
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16
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Weng X, Wu J, Lv Z, Peng C, Chen J, Zhang C, He B, Tong R, Hu W, Ding C, Cao L, Chen D, Wu J, Zheng S. Targeting Mybbp1a suppresses HCC progression via inhibiting IGF1/AKT pathway by CpG islands hypo-methylation dependent promotion of IGFBP5. EBioMedicine 2019; 44:225-236. [PMID: 31109829 PMCID: PMC6606930 DOI: 10.1016/j.ebiom.2019.05.029] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 05/10/2019] [Accepted: 05/10/2019] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Myb-binding protein 1A (Mybbp1a) is a nucleolar protein that can regulate rRNA metabolism, the stress response and carcinogenesis. However, the function of Mybbp1a in the progression of hepatocellular carcinoma (HCC) is unclear. We aimed to determine the role of Mybbp1a in HCC and the underlying mechanism. METHODS We investigated the function of Mybbp1a in HCC cell models and the xenograft mouse model. The relationship between Mybbp1a and IGFBP5 was found through expression profile chip. The molecular mechanism of Mybbp1a regulating IGFBP5 was proved through CO-IP, CHIP, Bisulfite Sequencing and Pyrosequencing. FINDINGS In this study, we observed that Mybbp1a was overexpressed in HCC tissues and associated with the poor prognosis of HCC patients. Suppression of Mybbp1a led to a reduction in the proliferation and migration ability of HCC cells through inhibiting the IGF1/AKT signaling pathway. Further study found that Mybbp1a could form a complex with DNMT1 and induce aberrant hyper-methylation of CpG islands of IGFBP5, which inhibits secretion of IGFBP5 and then activates IGF1/AKT signaling pathway. INTERPRETATION These findings extend our understanding of the function of Mybbp1a in the progression of HCC. The newly identified Mybbp1a may provide a novel biomarker for developing potential therapeutic targets of HCC. FUND: Science Technology Department of Zhejiang Province (No. 2015C03034), National Health and Family Planning Commission of China (No. 2016138643), Innovative Research Groups of National Natural Science Foundation of China (No. 81721091), Major program of National Natural Science Foundation of China (No. 91542205).
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Affiliation(s)
- Xiaoyu Weng
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China; Key Lab of Combined Multi-Organ Transplantation, Ministry of Public Health, Hangzhou 310003, China
| | - Jingbang Wu
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China; Key Lab of Combined Multi-Organ Transplantation, Ministry of Public Health, Hangzhou 310003, China
| | - Zhen Lv
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Chuanhui Peng
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China; Key Lab of Combined Multi-Organ Transplantation, Ministry of Public Health, Hangzhou 310003, China
| | - Junru Chen
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China; Key Lab of Combined Multi-Organ Transplantation, Ministry of Public Health, Hangzhou 310003, China
| | - Cheng Zhang
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Bin He
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China; Key Lab of Combined Multi-Organ Transplantation, Ministry of Public Health, Hangzhou 310003, China
| | - Rongliang Tong
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China; Key Lab of Combined Multi-Organ Transplantation, Ministry of Public Health, Hangzhou 310003, China
| | - Wendi Hu
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China; Key Lab of Combined Multi-Organ Transplantation, Ministry of Public Health, Hangzhou 310003, China
| | - Chaofeng Ding
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Linping Cao
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Diyu Chen
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China; Key Lab of Combined Multi-Organ Transplantation, Ministry of Public Health, Hangzhou 310003, China
| | - Jian Wu
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China; Key Lab of Combined Multi-Organ Transplantation, Ministry of Public Health, Hangzhou 310003, China; The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou 310003, China.
| | - Shusen Zheng
- Division of Hepatobiliary and Pancreatic Surgery, Department of Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China; Key Lab of Combined Multi-Organ Transplantation, Ministry of Public Health, Hangzhou 310003, China; The Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou 310003, China.
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17
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Haywood NJ, Slater TA, Matthews CJ, Wheatcroft SB. The insulin like growth factor and binding protein family: Novel therapeutic targets in obesity & diabetes. Mol Metab 2018; 19:86-96. [PMID: 30392760 PMCID: PMC6323188 DOI: 10.1016/j.molmet.2018.10.008] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 10/12/2018] [Accepted: 10/18/2018] [Indexed: 12/12/2022] Open
Abstract
Background Recent changes in nutrition and lifestyle have provoked an unprecedented increase in the prevalence of obesity and metabolic disorders. Recognition of the adverse effects on health has prompted intense efforts to understand the molecular determinants of insulin sensitivity and dysglycemia. In many respects, actions of insulin-like growth factors (IGFs) mirror those of insulin in metabolic regulation. Unlike insulin, however, the bioactivity of IGFs is regulated by a family of seven high-affinity binding proteins (IGFBPs) which confer temporospatial modulation with implications for metabolic homeostasis. In addition, evidence is accumulating that IGF-independent actions of certain of the IGFBPs can directly modulate insulin sensitivity. Scope of review In this review, we discuss the experimental data indicating a critical role for IGF/IGFBP axis in metabolic regulation. We highlight key discoveries through which IGFBPs have emerged as biomarkers or putative therapeutic targets in obesity and diabetes. Major conclusions Growing evidence suggests that several components of the IGF-IGFBP system could be explored for therapeutic potential in metabolic disorders. Both IGFBP-1 and IGFBP-2 have been favorably linked with insulin sensitivity in humans and preclinical data implicate direct involvement in the molecular regulation of insulin signaling and adiposity respectively. Further studies are warranted to evaluate clinical translation of these findings.
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Affiliation(s)
- Natalie J Haywood
- Division of Cardiovascular and Diabetes Research, Leeds Multidisciplinary Cardiovascular Research Centre, Faculty of Medicine and Health, University of Leeds, United Kingdom
| | - Thomas A Slater
- Division of Cardiovascular and Diabetes Research, Leeds Multidisciplinary Cardiovascular Research Centre, Faculty of Medicine and Health, University of Leeds, United Kingdom
| | - Connor J Matthews
- Division of Cardiovascular and Diabetes Research, Leeds Multidisciplinary Cardiovascular Research Centre, Faculty of Medicine and Health, University of Leeds, United Kingdom
| | - Stephen B Wheatcroft
- Division of Cardiovascular and Diabetes Research, Leeds Multidisciplinary Cardiovascular Research Centre, Faculty of Medicine and Health, University of Leeds, United Kingdom.
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18
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Fan S, Wang Z, Yu D, Xu Y. Molecular cloning and expression profiles of an insulin-like growth factor binding protein IGFBP5 in the pearl oyster, Pinctada fucata. JOURNAL OF APPLIED ANIMAL RESEARCH 2018. [DOI: 10.1080/09712119.2018.1517647] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Sigang Fan
- Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China
| | - Zhenzhen Wang
- Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China
| | - Dahui Yu
- Key Laboratory of South China Sea Fishery Resources Exploitation & Utilization, Ministry of Agriculture, South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China
- Guangxi Key Laboratory of Beibu Gulf Marine Biodiversity Conservation, Qinzhou University, Qinzhou, China
| | - Youhou Xu
- Guangxi Key Laboratory of Beibu Gulf Marine Biodiversity Conservation, Qinzhou University, Qinzhou, China
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Abstract
Insulin-like growth factor-binding proteins (IGFBPs) 1-6 bind IGFs but not insulin with high affinity. They were initially identified as serum carriers and passive inhibitors of IGF actions. However, subsequent studies showed that, although IGFBPs inhibit IGF actions in many circumstances, they may also potentiate these actions. IGFBPs are widely expressed in most tissues, and they are flexible endocrine and autocrine/paracrine regulators of IGF activity, which is essential for this important physiological system. More recently, individual IGFBPs have been shown to have IGF-independent actions. Mechanisms underlying these actions include (i) interaction with non-IGF proteins in compartments including the extracellular space and matrix, the cell surface and intracellular space, (ii) interaction with and modulation of other growth factor pathways including EGF, TGF-β and VEGF, and (iii) direct or indirect transcriptional effects following nuclear entry of IGFBPs. Through these IGF-dependent and IGF-independent actions, IGFBPs modulate essential cellular processes including proliferation, survival, migration, senescence, autophagy and angiogenesis. They have been implicated in a range of disorders including malignant, metabolic, neurological and immune diseases. A more complete understanding of their cellular roles may lead to the development of novel IGFBP-based therapeutic opportunities.
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Affiliation(s)
- L A Bach
- Department of Medicine (Alfred)Monash University, Melbourne, Australia
- Department of Endocrinology and DiabetesAlfred Hospital, Melbourne, Australia
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20
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Molecular characterization and tissue expression profiles of insulin-like growth factor binding protein-1 (IGFBP-1) in Chinese alligator Alligator sinensis during the active and hibernating periods. Biologia (Bratisl) 2018. [DOI: 10.2478/s11756-018-0028-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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21
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Garcia de la Serrana D, Macqueen DJ. Insulin-Like Growth Factor-Binding Proteins of Teleost Fishes. Front Endocrinol (Lausanne) 2018; 9:80. [PMID: 29593649 PMCID: PMC5857546 DOI: 10.3389/fendo.2018.00080] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 02/22/2018] [Indexed: 11/21/2022] Open
Abstract
The insulin-like growth factor (Igf) binding protein (Igfbp) family has a broad range of physiological functions and a fascinating evolutionary history. This review focuses on the Igfbps of teleost fishes, where genome duplication events have diversified gene repertoire, function, and physiological regulation-with six core Igfbps expanded into a family of over twenty genes in some lineages. In addition to briefly summarizing the current state of knowledge on teleost Igfbp evolution, function, and expression-level regulation, we highlight gaps in our understanding and promising areas for future work.
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Affiliation(s)
- Daniel Garcia de la Serrana
- School of Biology, Scottish Oceans Institute, University of St Andrews, St Andrews, United Kingdom
- *Correspondence: Daniel Garcia de la Serrana,
| | - Daniel J. Macqueen
- School of Biological Sciences, University of Aberdeen, Aberdeen, United Kingdom
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22
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Allard JB, Duan C. IGF-Binding Proteins: Why Do They Exist and Why Are There So Many? Front Endocrinol (Lausanne) 2018; 9:117. [PMID: 29686648 PMCID: PMC5900387 DOI: 10.3389/fendo.2018.00117] [Citation(s) in RCA: 277] [Impact Index Per Article: 46.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 03/08/2018] [Indexed: 12/11/2022] Open
Abstract
Insulin-like growth factors (IGFs) are key growth-promoting peptides that act as both endocrine hormones and autocrine/paracrine growth factors. In the bloodstream and in local tissues, most IGF molecules are bound by one of the members of the IGF-binding protein (IGFBP) family, of which six distinct types exist. These proteins bind to IGF with an equal or greater affinity than the IGF1 receptor and are thus in a key position to regulate IGF signaling globally and locally. Binding to an IGFBP increases the half-life of IGF in the circulation and blocks its potential binding to the insulin receptor. In addition to these classical roles, IGFBPs have been shown to modulate IGF signaling locally under various conditions. Although members of the IGFBP family share significant sequence homology, they each have unique structural features and play distinct roles. These IGFBP genes also have different modes of regulation and distinct expression patterns. Some IGFBPs have been found to bind to their own receptors or to translocate into the interior compartments of cells where they may execute IGF-independent actions. In spite of this functional and regulatory diversity, it has been puzzling that loss-of-function studies have yielded relatively little information about the physiological functions of IGFBPs. In this review, we suggest that evolution has tended to retain an array of IGFBPs in order to facilitate fine-tuning of IGF signaling. We explore the emerging explanation that many IGFBP functions have evolved to allow the targeted adjustment of IGF signaling under stressful or irregular conditions, which would likely not be revealed in a standard laboratory setting.
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23
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Neuzillet Y, Chapeaublanc E, Krucker C, De Koning L, Lebret T, Radvanyi F, Bernard-Pierrot I. IGF1R activation and the in vitro antiproliferative efficacy of IGF1R inhibitor are inversely correlated with IGFBP5 expression in bladder cancer. BMC Cancer 2017; 17:636. [PMID: 28882129 PMCID: PMC5588742 DOI: 10.1186/s12885-017-3618-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 08/28/2017] [Indexed: 01/01/2023] Open
Abstract
Background The insulin growth factor (IGF) pathway has been proposed as a potential therapeutic target in bladder cancer. We characterized the expression of components of the IGF pathway — insulin growth factor receptors (INSR, IGF1R, IGF2R), ligands (INS, IGF1, IGF2), and binding proteins (IGFBP1–7, IGF2BP1–3) — in bladder cancer and its correlation with IGF1R activation, and the anti-proliferative efficacy of an IGF1R kinase inhibitor in this setting. Methods We analyzed transcriptomic data from two independent bladder cancer datasets, corresponding to 200 tumoral and five normal urothelium samples. We evaluated the activation status of the IGF pathway in bladder tumors, by assessing IGF1R phosphorylation and evaluating its correlation with mRNA levels for IGF pathway components. We finally evaluated the correlation between inhibition of proliferation by a selective inhibitor of the IGF1R kinase (AEW541), reported in 13 bladder cancer derived cell lines by the Cancer Cell Line Encyclopedia Consortium and mRNA levels for IGF pathway components. Results IGF1R expression and activation were stronger in non-muscle-invasive than in muscle-invasive bladder tumors. There was a significant inverse correlation between IGF1R phosphorylation and IGFBP5 expression in tumors. Consistent with this finding, the inhibition of bladder cell line viability by IGF1R inhibitor was also inversely correlated with IGFBP5 expression. Conclusion The IGF pathway is activated and therefore a potential therapeutic target for non muscle-invasive bladder tumors and IGFBP5 could be used as a surrogate marker for predicting tumor sensitivity to anti-IGF therapy. Electronic supplementary material The online version of this article (10.1186/s12885-017-3618-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yann Neuzillet
- Hôpital Foch, Département d'Urologie, 40 Rue Worth, 92151, Suresnes, France.,Université de Versailles - Saint-Quentin-en-Yvelines, 78000, Versailles, France.,Institut Curie, PSL Research University, CNRS, UMR144, Equipe Labellisée Ligue contre le Cancer, 75005, Paris, France.,Sorbonne Universités, UPMC Université Paris 06, CNRS, UMR144, 75005, Paris, France
| | - Elodie Chapeaublanc
- Institut Curie, PSL Research University, CNRS, UMR144, Equipe Labellisée Ligue contre le Cancer, 75005, Paris, France.,Sorbonne Universités, UPMC Université Paris 06, CNRS, UMR144, 75005, Paris, France
| | - Clémentine Krucker
- Institut Curie, PSL Research University, CNRS, UMR144, Equipe Labellisée Ligue contre le Cancer, 75005, Paris, France.,Sorbonne Universités, UPMC Université Paris 06, CNRS, UMR144, 75005, Paris, France
| | - Leanne De Koning
- Institut Curie, PSL Research University, CNRS, UMR144, Equipe Labellisée Ligue contre le Cancer, 75005, Paris, France.,Département de Recherche Translationnelle, Cedex 05, 75248, Paris, France
| | - Thierry Lebret
- Hôpital Foch, Département d'Urologie, 40 Rue Worth, 92151, Suresnes, France.,Université de Versailles - Saint-Quentin-en-Yvelines, 78000, Versailles, France
| | - François Radvanyi
- Institut Curie, PSL Research University, CNRS, UMR144, Equipe Labellisée Ligue contre le Cancer, 75005, Paris, France.,Sorbonne Universités, UPMC Université Paris 06, CNRS, UMR144, 75005, Paris, France
| | - Isabelle Bernard-Pierrot
- Institut Curie, PSL Research University, CNRS, UMR144, Equipe Labellisée Ligue contre le Cancer, 75005, Paris, France. .,Sorbonne Universités, UPMC Université Paris 06, CNRS, UMR144, 75005, Paris, France. .,UMR 144 CNRS/IC, Institut Curie, 26 rue d'Ulm, CEDEX 05, 75248, Paris, France.
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24
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Synovial chondromatosis of the temporomandibular joint: Immunohistochemical examinations regarding the role of insulin-like growth factors and their binding proteins in the etiology of this disease. J Craniomaxillofac Surg 2017; 45:198-202. [DOI: 10.1016/j.jcms.2016.12.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 11/28/2016] [Accepted: 12/07/2016] [Indexed: 11/21/2022] Open
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25
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Cobo T, Viloria CG, Solares L, Fontanil T, González-Chamorro E, De Carlos F, Cobo J, Cal S, Obaya AJ. Role of Periostin in Adhesion and Migration of Bone Remodeling Cells. PLoS One 2016; 11:e0147837. [PMID: 26809067 PMCID: PMC4725750 DOI: 10.1371/journal.pone.0147837] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 01/08/2016] [Indexed: 12/27/2022] Open
Abstract
Periostin is an extracellular matrix protein highly expressed in collagen-rich tissues subjected to continuous mechanical stress. Functionally, periostin is involved in tissue remodeling and its altered function is associated to numerous pathological processes. In orthodontics, periostin plays key roles in the maintenance of dental tissues and it is mainly expressed in those areas where tension or pressing forces are taking place. In this regard, high expression of periostin is essential to promote migration and proliferation of periodontal ligament fibroblasts. However little is known about the participation of periostin in migration and adhesion processes of bone remodeling cells. In this work we employ the mouse pre-osteoblastic MC3T3-E1 and the macrophage-like RAW 264.7 cell lines to overexpress periostin and perform different cell-based assays to study changes in cell behavior. Our data indicate that periostin overexpression not only increases adhesion capacity of MC3T3-E1 cells to different matrix proteins but also hampers their migratory capacity. Changes on RNA expression profile of MC3T3-E1 cells upon periostin overexpression have been also analyzed, highlighting the alteration of genes implicated in processes such as cell migration, adhesion or bone metabolism but not in bone differentiation. Overall, our work provides new evidence on the impact of periostin in osteoblasts physiology.
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Affiliation(s)
- Teresa Cobo
- Departamento de Cirugía y Especialidades Médico-Quirúrgicas, Facultad de Medicina, Universidad de Oviedo, Asturias, Spain
| | - Cristina G. Viloria
- Departamento de Biología Funcional, Facultad de Medicina, Universidad de Oviedo, Asturias, Spain
| | - Laura Solares
- Departamento de Biología Funcional, Facultad de Medicina, Universidad de Oviedo, Asturias, Spain
| | - Tania Fontanil
- Departamento de Bioquímica y Biología Molecular, Facultad de Medicina, Universidad de Oviedo, Asturias, Spain
| | - Elena González-Chamorro
- Departamento de Cirugía y Especialidades Médico-Quirúrgicas, Facultad de Medicina, Universidad de Oviedo, Asturias, Spain
| | - Félix De Carlos
- Departamento de Cirugía y Especialidades Médico-Quirúrgicas, Facultad de Medicina, Universidad de Oviedo, Asturias, Spain
| | - Juan Cobo
- Departamento de Cirugía y Especialidades Médico-Quirúrgicas, Facultad de Medicina, Universidad de Oviedo, Asturias, Spain
| | - Santiago Cal
- Departamento de Bioquímica y Biología Molecular, Facultad de Medicina, Universidad de Oviedo, Asturias, Spain
- Instituto Universitario de Oncología (IUOPA), Facultad de Medicina, Universidad de Oviedo, Asturias, Spain
| | - Alvaro J. Obaya
- Departamento de Biología Funcional, Facultad de Medicina, Universidad de Oviedo, Asturias, Spain
- Instituto Universitario de Oncología (IUOPA), Facultad de Medicina, Universidad de Oviedo, Asturias, Spain
- * E-mail:
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26
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Lattuada D, Casnici C, Crotta K, Seneci PF, Corradini C, Truzzi M, Ingegnoli F, Marelli O. Proapoptotic activity of a monomeric smac mimetic on human fibroblast-like synoviocytes from patients with rheumatoid arthritis. Inflammation 2015; 38:102-9. [PMID: 25212046 PMCID: PMC4312388 DOI: 10.1007/s10753-014-0012-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Inhibitors of apoptosis proteins (IAPs) block cell death in response to diverse stimuli. The mitochondrial protein, second mitochondria-derived activator of caspase (Smac), negatively regulates IAP inhibition of caspase activity. We investigated the proapoptotic activity of a synthetic Smac (Smac 066) on fibroblast-like synoviocytes (FLS) derived from patients with active rheumatoid arthritis (RA). We found that Smac 066 induced significant apoptosis in all RA-FLS samples. Furthermore, IAPs, which are upregulated in RA-FLS, were downregulated by Smac 066. This suggested that IAPs upregulation was responsible for RA-FLS sensitivity to Smac 066. Next, we analysed caspase activation and found that Smac 066 was associated with caspase 8 and caspase 3 activities. We then investigated the mechanism underlying Smac 066 downregulation of IAPs in RA-FLS with an apoptotic pathway array. Interestingly, Smac 066 significantly upregulated IGFBP-5, a protein involved in differentiation, apoptosis, and osteoblastic activation. Smac 066 may represent a new therapeutic approach to RA treatment.
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Affiliation(s)
- D Lattuada
- Department of Medical Biotechnology and Translational Medicine, University of Study, Milan, Italy,
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27
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Cowley AW, Yang C, Kumar V, Lazar J, Jacob H, Geurts AM, Liu P, Dayton A, Kurth T, Liang M. Pappa2 is linked to salt-sensitive hypertension in Dahl S rats. Physiol Genomics 2015; 48:62-72. [PMID: 26534937 DOI: 10.1152/physiolgenomics.00097.2015] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 10/29/2015] [Indexed: 01/11/2023] Open
Abstract
A 1.37 Mbp region of chromosome 13 previously identified by exclusion mapping was consistently associated with a reduction of salt-induced hypertension in the Dahl salt-sensitive (SS) rat. This region contained five genes that were introgressed from the salt-insensitive Brown Norway (BN) rat. The goal of the present study was to further narrow that region to identify the gene(s) most likely to protect from salt-induced hypertension. The studies yielded a subcongenic SS rat strain containing a 0.71 Mbp insert from BN (26-P strain) in which salt-induced hypertension was reduced by 24 mmHg. The region contained two protein-coding genes (Astn1 and Pappa2) and a microRNA (miR-488). Pappa2 mRNA in the renal cortex of the protected 26-P was 6- to 10-fold greater than in SS fed a 0.4% NaCl diet but was reduced to levels observed in SS when fed 8.0% NaCl diet for 7 days. Compared with brain nuclei (NTS, RVLM, CVLM) and the adrenal gland, Pappa2 in the renal cortex was the only gene found to be differentially expressed between SS and 26-P and that responded to changes of salt diet. Immunohistochemistry studies found Pappa2 localized in the cytosol of the epithelial cells of the cortical thick ascending limbs. In more distal segments of the renal tubules, it was observed within tubular lumens and most notably bound to the apical membranes of the intercalated cells of collecting ducts. We conclude that we have identified a variant form of Pappa2 that can protect against salt-induced hypertension in the Dahl S rat.
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Affiliation(s)
- Allen W Cowley
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin;
| | - Chun Yang
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Vikash Kumar
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Jozef Lazar
- Human and Molecular Genetics Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Howard Jacob
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin; Human and Molecular Genetics Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Aron M Geurts
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin; Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin; and
| | - Pengyuan Liu
- Cancer Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Alex Dayton
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Theresa Kurth
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Mingyu Liang
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin
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28
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Abstract
Insulin-like growth factor binding proteins (IGFBPs) 4-6 have important roles as modulators of IGF actions. IGFBP-4 and IGFBP-6 predominantly inhibit IGF actions, whereas IGFBP-5 may enhance these actions under some circumstances. IGFBP-6 is unique among the IGFBPs for its marked IGF-II binding preference. IGFBPs 4-6 are found in the circulation as binary complexes with IGFs that can enter tissues. Additionally, about half of the circulating IGFBP-5 is found in ternary complexes with IGFs and an acid labile subunit; this high molecular complex cannot leave the circulation and acts as an IGF reservoir. IGFBPs 4-6 also have IGF-independent actions. These IGFBPs are regulated in a cell-specific manner and their dysregulation may play a role in a range of diseases including cancer. However, there is no clear clinical indication for measuring serum levels of these IGFBPs at present.
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Affiliation(s)
- Leon A Bach
- Department of Medicine (Alfred), Monash University, Prahran, 3181, Australia; Department of Endocrinology and Diabetes, Alfred Hospital, Melbourne, 3004, Australia.
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29
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Mirabello L, Koster R, Moriarity BS, Spector LG, Meltzer PS, Gary J, Machiela MJ, Pankratz N, Panagiotou OA, Largaespada D, Wang Z, Gastier-Foster JM, Gorlick R, Khanna C, de Toledo SRC, Petrilli AS, Patiño-Garcia A, Sierrasesúmaga L, Lecanda F, Andrulis IL, Wunder JS, Gokgoz N, Serra M, Hattinger C, Picci P, Scotlandi K, Flanagan AM, Tirabosco R, Amary MF, Halai D, Ballinger ML, Thomas DM, Davis S, Barkauskas DA, Marina N, Helman L, Otto GM, Becklin KL, Wolf NK, Weg MT, Tucker M, Wacholder S, Fraumeni JF, Caporaso NE, Boland JF, Hicks BD, Vogt A, Burdett L, Yeager M, Hoover RN, Chanock SJ, Savage SA. A Genome-Wide Scan Identifies Variants in NFIB Associated with Metastasis in Patients with Osteosarcoma. Cancer Discov 2015; 5:920-31. [PMID: 26084801 DOI: 10.1158/2159-8290.cd-15-0125] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 06/11/2015] [Indexed: 02/02/2023]
Abstract
UNLABELLED Metastasis is the leading cause of death in patients with osteosarcoma, the most common pediatric bone malignancy. We conducted a multistage genome-wide association study of osteosarcoma metastasis at diagnosis in 935 osteosarcoma patients to determine whether germline genetic variation contributes to risk of metastasis. We identified an SNP, rs7034162, in NFIB significantly associated with metastasis in European osteosarcoma cases, as well as in cases of African and Brazilian ancestry (meta-analysis of all cases: P = 1.2 × 10(-9); OR, 2.43; 95% confidence interval, 1.83-3.24). The risk allele was significantly associated with lowered NFIB expression, which led to increased osteosarcoma cell migration, proliferation, and colony formation. In addition, a transposon screen in mice identified a significant proportion of osteosarcomas harboring inactivating insertions in Nfib and with lowered NFIB expression. These data suggest that germline genetic variation at rs7034162 is important in osteosarcoma metastasis and that NFIB is an osteosarcoma metastasis susceptibility gene. SIGNIFICANCE Metastasis at diagnosis in osteosarcoma is the leading cause of death in these patients. Here we show data that are supportive for the NFIB locus as associated with metastatic potential in osteosarcoma.
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Affiliation(s)
- Lisa Mirabello
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, Maryland.
| | - Roelof Koster
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, Maryland
| | - Branden S Moriarity
- Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota. Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota. Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, Minnesota. Center for Genome Engineering, University of Minnesota, Minneapolis, Minnesota
| | - Logan G Spector
- Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota
| | - Paul S Meltzer
- Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland
| | - Joy Gary
- Laboratory of Cancer Biology and Genetics, NCI, NIH, Bethesda, Maryland; College of Veterinary Medicine, Michigan State University, East Lansing, Michigan
| | - Mitchell J Machiela
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, Maryland
| | - Nathan Pankratz
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, Minnesota
| | - Orestis A Panagiotou
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, Maryland
| | - David Largaespada
- Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota. Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota. Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, Minnesota. Center for Genome Engineering, University of Minnesota, Minneapolis, Minnesota
| | - Zhaoming Wang
- Cancer Genomics Research Laboratory, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Frederick, Maryland
| | - Julie M Gastier-Foster
- Nationwide Children's Hospital, and The Ohio State University Department of Pathology and Pediatrics, Columbus, Ohio
| | - Richard Gorlick
- Albert Einstein College of Medicine, The Children's Hospital at Montefiore, Bronx, New York
| | - Chand Khanna
- Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland
| | | | | | - Ana Patiño-Garcia
- Department of Pediatrics, University Clinic of Navarra, Universidad de Navarra, Pamplona, Spain
| | - Luis Sierrasesúmaga
- Department of Pediatrics, University Clinic of Navarra, Universidad de Navarra, Pamplona, Spain
| | - Fernando Lecanda
- Department of Pediatrics, University Clinic of Navarra, Universidad de Navarra, Pamplona, Spain
| | - Irene L Andrulis
- University of Toronto, Litwin Centre for Cancer Genetics, Lunenfeld Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Jay S Wunder
- University of Toronto, Litwin Centre for Cancer Genetics, Lunenfeld Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Nalan Gokgoz
- University of Toronto, Litwin Centre for Cancer Genetics, Lunenfeld Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Massimo Serra
- Laboratory of Experimental Oncology, Orthopaedic Rizzoli Institute, Bologna, Italy
| | - Claudia Hattinger
- Laboratory of Experimental Oncology, Orthopaedic Rizzoli Institute, Bologna, Italy
| | - Piero Picci
- Laboratory of Experimental Oncology, Orthopaedic Rizzoli Institute, Bologna, Italy
| | - Katia Scotlandi
- Laboratory of Experimental Oncology, Orthopaedic Rizzoli Institute, Bologna, Italy
| | - Adrienne M Flanagan
- University College London Cancer Institute, London, United Kingdom. Royal National Orthopaedic Hospital National Health Service Trust, Stanmore, Middlesex, United Kingdom
| | - Roberto Tirabosco
- Royal National Orthopaedic Hospital National Health Service Trust, Stanmore, Middlesex, United Kingdom
| | - Maria Fernanda Amary
- Royal National Orthopaedic Hospital National Health Service Trust, Stanmore, Middlesex, United Kingdom
| | - Dina Halai
- Royal National Orthopaedic Hospital National Health Service Trust, Stanmore, Middlesex, United Kingdom
| | | | - David M Thomas
- The Kinghorn Cancer Centre, Garvan Institute of Medical Research, Darlinghurst, New South Wales, Australia
| | - Sean Davis
- Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland
| | - Donald A Barkauskas
- Department of Preventive Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, California
| | - Neyssa Marina
- Stanford University and Lucile Packard Children's Hospital, Palo Alto, California
| | - Lee Helman
- Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland
| | - George M Otto
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - Kelsie L Becklin
- Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, Minnesota
| | - Natalie K Wolf
- Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, Minnesota
| | - Madison T Weg
- Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota
| | - Margaret Tucker
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, Maryland
| | - Sholom Wacholder
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, Maryland
| | - Joseph F Fraumeni
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, Maryland
| | - Neil E Caporaso
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, Maryland
| | - Joseph F Boland
- Cancer Genomics Research Laboratory, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Frederick, Maryland
| | - Belynda D Hicks
- Cancer Genomics Research Laboratory, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Frederick, Maryland
| | - Aurelie Vogt
- Cancer Genomics Research Laboratory, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Frederick, Maryland
| | - Laurie Burdett
- Cancer Genomics Research Laboratory, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Frederick, Maryland
| | - Meredith Yeager
- Cancer Genomics Research Laboratory, Leidos Biomedical Research, Frederick National Laboratory for Cancer Research, Frederick, Maryland
| | - Robert N Hoover
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, Maryland
| | - Stephen J Chanock
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, Maryland
| | - Sharon A Savage
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, Maryland
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30
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Peh GSL, Chng Z, Ang HP, Cheng TYD, Adnan K, Seah XY, George BL, Toh KP, Tan DT, Yam GHF, Colman A, Mehta JS. Propagation of Human Corneal Endothelial Cells: A Novel Dual Media Approach. Cell Transplant 2015; 24:287-304. [DOI: 10.3727/096368913x675719] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Corneal endothelium-associated corneal blindness is the most common indication for corneal transplantation. Restorative corneal transplant surgery is the only option to reverse the blindness, but a global shortage of donor material remains an issue. There are immense clinical interests in the development of alternative treatment strategies to alleviate current reliance on donor materials. For such endeavors, ex vivo propagation of human corneal endothelial cells (hCECs) is required, but current methodology lacks consistency, with expanded hCECs losing cellular morphology to a mesenchymal-like transformation. In this study, we describe a novel dual media culture approach for the in vitro expansion of primary hCECs. Initial characterization included analysis of growth dynamics of hCECs grown in either proliferative (M4) or maintenance (M5) medium. Subsequent comparisons were performed on isolated hCECs cultured in M4 alone against cells expanded using the dual media approach. Further characterizations were performed using immunocytochemistry, quantitative real-time PCR, and gene expression microarray. At the third passage, results showed that hCECs propagated using the dual media approach were homogeneous in appearance, retained their unique polygonal cellular morphology, and expressed higher levels of corneal endothelium-associated markers in comparison to hCECs cultured in M4 alone, which were heterogeneous and fibroblastic in appearance. Finally, for hCECs cultured using the dual media approach, global gene expression and pathway analysis between confluent hCECs before and after 7-day exposure to M5 exhibited differential gene expression associated predominately with cell proliferation and wound healing. These findings showed that the propagation of primary hCECs using the novel dual media approach presented in this study is a consistent method to obtain bona fide hCECs. This, in turn, will elicit greater confidence in facilitating downstream development of alternative corneal endothelium replacement using tissue-engineered graft materials or cell injection therapy.
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Affiliation(s)
- Gary S. L. Peh
- Tissue Engineering and Stem Cell Group, Singapore Eye Research Institute, Singapore, Singapore
| | - Zhenzhi Chng
- A*STAR Institute of Medical Biology, Singapore, Singapore
| | - Heng-Pei Ang
- Tissue Engineering and Stem Cell Group, Singapore Eye Research Institute, Singapore, Singapore
| | | | - Khadijah Adnan
- Tissue Engineering and Stem Cell Group, Singapore Eye Research Institute, Singapore, Singapore
| | - Xin-Yi Seah
- Tissue Engineering and Stem Cell Group, Singapore Eye Research Institute, Singapore, Singapore
| | - Benjamin L. George
- Tissue Engineering and Stem Cell Group, Singapore Eye Research Institute, Singapore, Singapore
| | - Kah-Peng Toh
- Tissue Engineering and Stem Cell Group, Singapore Eye Research Institute, Singapore, Singapore
| | - Donald T. Tan
- Tissue Engineering and Stem Cell Group, Singapore Eye Research Institute, Singapore, Singapore
- Singapore National Eye Centre, Singapore, Singapore
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Gary H. F. Yam
- Tissue Engineering and Stem Cell Group, Singapore Eye Research Institute, Singapore, Singapore
| | - Alan Colman
- A*STAR Institute of Medical Biology, Singapore, Singapore
| | - Jodhbir S. Mehta
- Tissue Engineering and Stem Cell Group, Singapore Eye Research Institute, Singapore, Singapore
- Singapore National Eye Centre, Singapore, Singapore
- Duke Medical School of Medicine, National University of Singapore, Singapore, Singapore
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31
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Chen W, Li W, Zhang Z, Jiang X, Li M. Cloning, molecular characterization and expression analysis of insulin-like growth factor binding protein-2 (IGFBP-2) cDNA in goldfish, Carassius auratus. FISH PHYSIOLOGY AND BIOCHEMISTRY 2014; 40:1669-1681. [PMID: 24992902 DOI: 10.1007/s10695-014-9958-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 06/24/2014] [Indexed: 06/03/2023]
Abstract
In the present study, a full-length cDNA encoding the insulin-like growth factor binding protein-2 (IGFBP-2) was cloned from the liver of goldfish (Carassius auratus) by rapid amplification of cDNA ends technique. The goldfish IGFBP-2 cDNA sequence was 1,513 bp long and had an open reading frame of 825 bp encoding a predicted polypeptide of 274 amino acid residues. Semi-quantitative RT-PCR results revealed that goldfish IGFBP-2 mRNA was expressed in all detected tissues. In liver, central nervous system and pituitary gland, goldfish IGFBP-2 expressed at high levels, followed by anterior intestine, middle intestine and kidney. In posterior intestine, ovary, skin, fat, spleen, muscle and gill, the goldfish IGFBP-2 expression levels were very low. Fasting and refeeding experiment showed that the mRNA expression of goldfish IGFBP-2 was up-regulated significantly in liver compared to the fed group and restored rapidly to normal level after refed. However, the mRNA expressions of IGFBP-2 in hypothalamus and pituitary of goldfish were insensitive to fasting. Furthermore, the mRNA expressions of IGFBP-2 in hypothalamus, pituitary and liver were varied in periprandial changes and significantly down-regulated at 2 and 4 h after meal. These results imply that the IGFBP-2 mRNA expression may be associated with anabolic and catabolic metabolism and regulated by metabolic factors in goldfish.
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Affiliation(s)
- Wenbo Chen
- Department of Biology, Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, Henan, People's Republic of China,
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Wang J, Gao J, Wang W, Ma L, Liu M, Yu H, Wang Z, Wang X, Qi J, Zhang Q. Molecular cloning, expression profiles and promoter analysis of insulin-like growth factor binding protein-4 (IGFBP-4) in Japanese flounder (Paralichthys olivaceus). Comp Biochem Physiol B Biochem Mol Biol 2014; 175:41-52. [PMID: 24984076 DOI: 10.1016/j.cbpb.2014.06.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Revised: 05/24/2014] [Accepted: 06/20/2014] [Indexed: 11/27/2022]
Abstract
We cloned and characterized cDNA sequence of insulin-like growth factor binding protein-4 (IGFBP-4) from Japanese flounder (Paralichthys olivaceus). The 1493 bp full-length cDNA sequence contained an open reading frame (ORF) of 780 bp, which encoded a protein of 259 amino acids. The deduced amino acid sequences included a putative signal peptide of 28 amino acid residues resulting in a mature protein of 231 amino acids. Twenty cysteine residues and two conserved IGFBPs motif (GCGCCXXC and CWCV) were found in the N- and C-terminal domain. In the over 13 kbp genomic sequence, four exons, three introns, and 5'-/3'-flanking sequences were identified. Sequence alignment and phylogenetic analysis showed that Japanese flounder IGFBP-4 was indeed the ortholog of the human IGFBP-4 gene and shared high identities with other teleost IGFBP-4 genes. The promoter region was also analyzed and several potential transcription factor (TF) binding sites were determined which may modulate the IGFBP-4 expression. Quantitative real-time PCR analysis revealed that IGFBP-4 mRNA was observed in various tissues, with intestine showing the highest expression. The maternal transcripts of IGFBP-4 gene existed in the early embryonic stages and then increased in the following stages until hatching, suggesting that IGFBP-4 may be involved in the fish early development. The expression level of IGFBP-4 mRNA was relatively higher at 3 days post hatching (dph) and 15 dph, and gradually decreased during the metamorphosis period. All these results indicated that IGFBP-4 plays a significant role in IGF regulating vertebrate growth and development.
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Affiliation(s)
- Jing Wang
- College of Marine Life Sciences, Ocean University of China, Key Laboratory of Marine Genetics and Breeding, Ministry of Education, #5 Yushan Road, Qingdao 266003, China
| | - Jinning Gao
- College of Marine Life Sciences, Ocean University of China, Key Laboratory of Marine Genetics and Breeding, Ministry of Education, #5 Yushan Road, Qingdao 266003, China
| | - Wenji Wang
- College of Marine Life Sciences, Ocean University of China, Key Laboratory of Marine Genetics and Breeding, Ministry of Education, #5 Yushan Road, Qingdao 266003, China
| | - Liman Ma
- College of Marine Life Sciences, Ocean University of China, Key Laboratory of Marine Genetics and Breeding, Ministry of Education, #5 Yushan Road, Qingdao 266003, China
| | - Mengmeng Liu
- College of Marine Life Sciences, Ocean University of China, Key Laboratory of Marine Genetics and Breeding, Ministry of Education, #5 Yushan Road, Qingdao 266003, China
| | - Haiyang Yu
- College of Marine Life Sciences, Ocean University of China, Key Laboratory of Marine Genetics and Breeding, Ministry of Education, #5 Yushan Road, Qingdao 266003, China
| | - Zhigang Wang
- College of Marine Life Sciences, Ocean University of China, Key Laboratory of Marine Genetics and Breeding, Ministry of Education, #5 Yushan Road, Qingdao 266003, China
| | - Xubo Wang
- College of Marine Life Sciences, Ocean University of China, Key Laboratory of Marine Genetics and Breeding, Ministry of Education, #5 Yushan Road, Qingdao 266003, China
| | - Jie Qi
- College of Marine Life Sciences, Ocean University of China, Key Laboratory of Marine Genetics and Breeding, Ministry of Education, #5 Yushan Road, Qingdao 266003, China
| | - Quanqi Zhang
- College of Marine Life Sciences, Ocean University of China, Key Laboratory of Marine Genetics and Breeding, Ministry of Education, #5 Yushan Road, Qingdao 266003, China.
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Mukund K, Mathewson M, Minamoto V, Ward SR, Subramaniam S, Lieber RL. Systems analysis of transcriptional data provides insights into muscle's biological response to botulinum toxin. Muscle Nerve 2014; 50:744-58. [PMID: 24536034 DOI: 10.1002/mus.24211] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2013] [Revised: 01/28/2014] [Accepted: 02/13/2014] [Indexed: 12/13/2022]
Abstract
INTRODUCTION This study provides global transcriptomic profiling and analysis of botulinum toxin A (BoNT-A)-treated muscle over a 1-year period. METHODS Microarray analysis was performed on rat tibialis anterior muscles from 4 groups (n = 4/group) at 1, 4, 12, and 52 weeks after BoNT-A injection compared with saline-injected rats at 12 weeks. RESULTS Dramatic transcriptional adaptation occurred at 1 week with a paradoxical increase in expression of slow and immature isoforms, activation of genes in competing pathways of repair and atrophy, impaired mitochondrial biogenesis, and increased metal ion imbalance. Adaptations of the basal lamina and fibrillar extracellular matrix (ECM) occurred by 4 weeks. The muscle transcriptome returned to its unperturbed state 12 weeks after injection. CONCLUSIONS Acute transcriptional adaptations resemble denervated muscle with some subtle differences, but resolved more quickly compared with denervation. Overall, gene expression across time correlates with the generally accepted BoNT-A time course and suggests that the direct action of BoNT-A in skeletal muscle is relatively rapid.
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Affiliation(s)
- Kavitha Mukund
- Bioinformatics and System Biology Graduate Program, University of California San Diego, La Jolla, California, USA
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Jianmin Z, Jingting S, Yanju S, Yan H, Chi S, Wenqi Z. Expression of Insulin-Like Growth Factor System Genes in Liver Tissue During Embryonic and Early Post-Hatch Development in Duck (Anas platyrhynchos Domestica). Anim Biotechnol 2014; 25:73-84. [DOI: 10.1080/10495398.2013.812560] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Zhang Y, Zhang J, Shi Z, Zhai W, Wang X. Insulin-like growth factor binding protein-2 (IGFBP-2) in Japanese flounder, Paralichthys olivaceus: molecular cloning, expression patterns and hormonal regulation during metamorphosis. FISH PHYSIOLOGY AND BIOCHEMISTRY 2013; 39:1541-1554. [PMID: 23974668 DOI: 10.1007/s10695-013-9807-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2012] [Accepted: 05/17/2013] [Indexed: 06/02/2023]
Abstract
In this study, we cloned and characterized cDNA sequences of two insulin-like growth factor binding protein-2 (IGFBP-2a and IGFBP-2b) from Japanese flounder, Paralichthys olivaceus. The full-length cDNA of IGFBP-2a is 1,046 bp long and consists an open frame (ORF) of 876 bp, a 5'-untranslated region (UTR) of 125 bp and a 3'-UTR of 45 bp. IGFBP-2b is 1,067 bp, including a 5'-UTR of 53 bp, a 3'-UTR of 198 bp and an ORF of 816 bp. Real-time quantitative PCR results revealed that IGFBP-2a -2b mRNA was expressed in all detected tissues. Interestingly, the levels of IGFBP-2a mRNA in all detected tissues were higher in female than male, but IGFBP-2b was precisely the opposite. At different embryonic stages, the levels of IGFBP-2a mRNA were typically higher than IGFBP-2b. After hatching, IGFBP-2a mRNA was gradually decreased to a relatively lower level. However, the expression of IGFBP-2b mRNA was increased after hatching, including 3, 7, 10, 14, 17, 20 and 23 days post-hatching (dph), and it presents a higher level until 29 (metamorphic climax), 36 (post-climax) and 41 dph (the end of metamorphosis). In levothyroxine sodium salt (T4, the main form of thyroid hormone in animals)-treated and thiourea (TU)-treated larvae, the expressions of IGFBP-2a had not visibly changed, except in T4-treated 17 dph larvae. The expressions of IGFBP-2b mRNA were distinctly increased from 17 to 23 dph, but suddenly dropped to a lower level in and after 29 dph. However, the levels of IGFBP-2b mRNA during metamorphosis were greatly down-regulated after TU treatment. These results provided basic information for further studies on the role of IGF system in flatfish development and metamorphosis.
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Affiliation(s)
- Yuntong Zhang
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Shanghai, 201306, People's Republic of China
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Okano T, Kelley MW. Expression of insulin-like growth factor binding proteins during mouse cochlear development. Dev Dyn 2013; 242:1210-21. [DOI: 10.1002/dvdy.24005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 06/16/2013] [Accepted: 06/16/2013] [Indexed: 12/23/2022] Open
Affiliation(s)
- Takayuki Okano
- Laboratory of Cochlear Development; National Institute on Deafness and Other Communication Disorders; National Institutes of Health; Bethesda Maryland
| | - Matthew W. Kelley
- Laboratory of Cochlear Development; National Institute on Deafness and Other Communication Disorders; National Institutes of Health; Bethesda Maryland
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Song SE, Kim YW, Kim JY, Lee DH, Kim JR, Park SY. IGFBP5 mediates high glucose-induced cardiac fibroblast activation. J Mol Endocrinol 2013; 50:291-303. [PMID: 23417767 DOI: 10.1530/jme-12-0194] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
This study examined whether IGF-binding protein 5 (IGFBP5) is involved in the high glucose-induced deteriorating effects in cardiac cells. Cardiac fibroblasts and cardiomyocytes were isolated from the hearts of 1- to 3-day-old Sprague Dawley rats. Treatment of fibroblasts with 25 mM glucose increased the number of cells and the mRNA levels of collagen III, matrix metalloproteinase 2 (MMP2), and MMP9. High glucose increased ERK1/2 activity, and the ERK1/2 inhibitor PD98059 suppressed high glucose-mediated fibroblast proliferation and increased collagen III mRNA levels. Whereas high glucose increased both mRNA and protein levels of IGFBP5 in fibroblasts, high glucose did not affect IGFBP5 protein levels in cardiomyocytes. The high glucose-induced increase in IGFBP5 protein levels was inhibited by PD98059 in fibroblasts. While recombinant IGFBP5 increased ERK phosphorylation, cell proliferation, and the mRNA levels of collagen III, MMP2, and MMP9 in fibroblasts, IGFBP5 increased c-Jun N-terminal kinase phosphorylation and induced apoptosis in cardiomyocytes. The knockdown of IGFBP5 inhibited high glucose-induced cell proliferation and collagen III mRNA levels in fibroblasts. Although high glucose increased IGF1 levels, IGF1 did not increase IGFBP5 levels in fibroblasts. The hearts of Otsuka Long-Evans Tokushima Fatty rats and the cardiac fibroblasts of streptozotocin-induced diabetic rats showed increased IGFBP5 expression. These results suggest that IGFBP5 mediates high glucose-induced profibrotic effects in cardiac fibroblasts.
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Affiliation(s)
- Seung Eun Song
- Department of Physiology, College of Medicine, Yeungnam University, Daegu 705-717, South Korea
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Hormone therapy is associated with better body composition and adipokine/glucose profiles: a study with monozygotic co-twin control design. Menopause 2013; 19:1329-35. [PMID: 22914204 DOI: 10.1097/gme.0b013e31825a3344] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
OBJECTIVE The aim of this study was to evaluate the possibility of preventing the metabolic health consequences of postmenopausal hypogonadism with the use of long-term hormone therapy (HT). METHODS We used a monozygotic co-twin control design including 10 twin pairs (aged 56-62 y) discordant for HT (duration of HT, 2-10 y). In addition, 14 premenopausal women (aged 29-35 y) who did not use HT were studied to evaluate the differences in metabolic health between the premenopausal and postmenopausal states. Body composition was determined, and waist-to-hip ratio was used as an estimate for fat distribution. Serum sex steroids, sex hormone-binding globulin, and serum lipid and glucose profiles were analyzed. The serum levels of adiponectin, monocyte chemotactic protein-1, and leptin, as well as their local transcript levels in adipose tissue, skeletal muscle, and leukocytes, were measured. RESULTS Long-term HT was associated with a healthier amount and distribution of body fat. No difference was seen in serum lipid concentrations between HT users and their nonusing identical twin sisters, but fasting serum glucose and glycated hemoglobin levels were 5% and 3% lower in HT users than in nonusers, respectively. Among the adipokines analyzed, the most notable finding was a 15% lower level of monocyte chemotactic protein-1 in HT users, particularly with respect to its suggested mediator role between obesity and insulin resistance. CONCLUSIONS Long-term HT is associated with healthier amount and distribution of body fat and better adipocytokine profile, with concomitant signs of improved insulin sensitivity.
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Lee DH, Kim JE, Kang YJ. Insulin Like Growth Factor Binding Protein-5 Regulates Excessive Vascular Smooth Muscle Cell Proliferation in Spontaneously Hypertensive Rats via ERK 1/2 Phosphorylation. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2013; 17:157-62. [PMID: 23626478 PMCID: PMC3634093 DOI: 10.4196/kjpp.2013.17.2.157] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Revised: 01/23/2013] [Accepted: 02/04/2013] [Indexed: 11/15/2022]
Abstract
Insulin-like growth factor binding proteins (IGFBPs) are important components of insulin growth factor (IGF) signaling pathways. One of the binding proteins, IGFBP-5, enhances the actions of IGF-1, which include the enhanced proliferation of smooth muscle cells. In the present study, we examined the expression and the biological effects of IGFBP-5 in vascular smooth muscle cells (VSMCs) from spontaneously hypertensive rats (SHR) and Wistar Kyoto rats (WKY). The levels of IGFBP-5 mRNA and protein were found to be higher in the VSMC from SHR than in those from WKY. Treatment with recombinant IGFBP-5-stimulated VSMC proliferation in WKY to the levels observed in SHR. In the VSMCs of WKY, incubation with angiotensin (Ang) II or IGF-1 dose dependently increased IGFBP-5 protein levels. Transfection with IGFBP-5 siRNA reduced VSMC proliferation in SHR to the levels exhibited in WKY. In addition, recombinant IGFBP-5 significantly up-regulated ERK1/2 phosphorylation in the VSMCs of WKY as much as those of SHR. Concurrent treatment with the MEK1/2 inhibitors, PD98059 or U0126 completely inhibited recombinant IGFBP-5-induced VSMC proliferation in WKY, while concurrent treatment with the phosphatidylinositol-3 kinase inhibitor, LY294002, had no effect. Furthermore, knockdown with IGFBP-5 siRNA inhibited ERK1/2 phosphorylation in VSMC of SHR. These results suggest that IGFBP-5 plays a role in the regulation of VSMC proliferation via ERK1/2 MAPK signaling in hypertensive rats.
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Affiliation(s)
- Dong Hyup Lee
- Department of Thoracic and Cardiovascular Surgery, College of Medicine, Yeungnam University, Daegu 705-717, Korea. ; Aging-Associated Vascular Disease Research Center, College of Medicine, Yeungnam University, Daegu 705-717, Korea
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Seurin D, Lombet A, Babajko S, Godeau F, Ricort JM. Insulin-like growth factor binding proteins increase intracellular calcium levels in two different cell lines. PLoS One 2013; 8:e59323. [PMID: 23527161 PMCID: PMC3602172 DOI: 10.1371/journal.pone.0059323] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 02/13/2013] [Indexed: 12/30/2022] Open
Abstract
Background Insulin-like growth factor binding proteins (IGFBPs) are six related secreted proteins that share IGF-dependent and -independent functions. If the former functions begin to be well described, the latter are somewhat more difficult to investigate and to characterize. At the cellular level, IGFBPs were shown to modulate numerous processes including cell growth, differentiation and apoptosis. However, the molecular mechanisms implicated remain largely unknown. We previously demonstrated that IGFBP-3, but not IGFBP-1 or IGFBP-5, increase intracellular calcium concentration in MCF-7 cells (Ricort J-M et al. (2002) FEBS lett 527: 293–297). Methodology/Principal Findings We perform a global analysis in which we studied, by two different approaches, the binding of each IGFBP isoform (i.e., IGFBP-1 to -6) to the surface of two different cellular models, MCF-7 breast adenocarcinoma cells and C2 myoblast proliferative cells, as well as the IGFBP-induced increase of intracellular calcium concentration. Using both confocal fluorescence microscopy and flow cytometry analysis, we showed that all IGFBPs bind to MCF-7 cell surface. By contrast, only four IGFBPs can bind to C2 cell surface since neither IGFBP-2 nor IGFBP-4 were detected. Among the six IGFBPs tested, only IGFBP-1 did not increased intracellular calcium concentration whatever the cellular model studied. By contrast, IGFBP-2, -3, -4 and -6, in MCF-7 cells, and IGFBP-3, -5 and -6, in C2 proliferative cells, induce a rapid and transient increase in intracellular free calcium concentration. Moreover, IGFBP-2 and -3 (in MCF-7 cells) and IGFBP-5 (in C2 cells) increase intracellular free calcium concentration by a pertussis toxin sensitive signaling pathway. Conclusions Our results demonstrate that IGFBPs are able to bind to cell surface and increase intracellular calcium concentration. By characterizing the IGFBPs-induced cell responses and intracellular couplings, we highlight the cellular specificity and complexity of the IGF-independent actions of these IGF binding proteins.
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Affiliation(s)
- Danielle Seurin
- INSERM UMR_S938, Centre de Recherche Saint-Antoine, Paris, France
| | | | - Sylvie Babajko
- INSERM U872, Laboratoire de Physiopathologie Orale Moléculaire, Paris, France
| | - François Godeau
- INSERM UMR_S938, Centre de Recherche Saint-Antoine, Paris, France
| | - Jean-Marc Ricort
- LBPA, ENS de Cachan, CNRS, Cachan, France
- UMR204, Université Montpellier 2, Montpellier, France
- * E-mail:
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Macqueen DJ, Garcia de la Serrana D, Johnston IA. Evolution of ancient functions in the vertebrate insulin-like growth factor system uncovered by study of duplicated salmonid fish genomes. Mol Biol Evol 2013; 30:1060-76. [PMID: 23360665 PMCID: PMC3670735 DOI: 10.1093/molbev/mst017] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Whole-genome duplication (WGD) was experienced twice by the vertebrate ancestor (2 rounds; 2R), again by the teleost fish ancestor (3R) and most recently in certain teleost lineages (4R). Consequently, vertebrate gene families are often expanded in 3R and 4R genomes. Arguably, many types of “functional divergence” present across 2R gene families will exceed that between 3R/4R paralogs of genes comprising 2R families. Accordingly, 4R offers a form of replication of 2R. Examining whether this concept has implications for molecular evolutionary research, we studied insulin-like growth factor (IGF) binding proteins (IGFBPs), whose six 2R family members carry IGF hormones and regulate interactions between IGFs and IGF1-receptors (IGF1Rs). Using phylogenomic approaches, we resolved the complete IGFBP repertoire of 4R-derived salmonid fishes (19 genes; 13 more than human) and established evolutionary relationships/nomenclature with respect to WGDs. Traits central to IGFBP action were determined for all genes, including atomic interactions in IGFBP–IGF1/IGF2 complexes regulating IGF–IGF1R binding. Using statistical methods, we demonstrate that attributes of these protein interfaces are overwhelming a product of 2R IGFBP family membership, explain 49–68% of variation in IGFBP mRNA concentration in several different tissues, and strongly predict the strength and direction of IGFBP transcriptional regulation under differing nutritional states. The results support a model where vertebrate IGFBP family members evolved divergent structural attributes to provide distinct competition for IGFs with IGF1Rs, predisposing different functions in the regulation of IGF signaling. Evolution of gene expression then acted to ensure the appropriate physiological production of IGFBPs according to their structural specializations, leading to optimal IGF-signaling according to nutritional-status and the endocrine/local mode of action. This study demonstrates that relatively recent gene family expansion can facilitate inference of functional evolution within ancient genetic systems.
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Affiliation(s)
- Daniel J Macqueen
- Scottish Oceans Institute, University of St Andrews, St Andrews, Fife, United Kingdom.
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Kelly AK, Waters SM, McGee M, Browne JA, Magee DA, Kenny DA. Expression of key genes of the somatotropic axis in longissimus dorsi muscle of beef heifers phenotypically divergent for residual feed intake. J Anim Sci 2013; 91:159-67. [DOI: 10.2527/jas.2012-5557] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Affiliation(s)
- A. K. Kelly
- School of Agriculture, Food Science and Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland
| | - S. M. Waters
- Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Dunsany, Co. Meath, Ireland
| | - M. McGee
- Teagasc, Animal & Grassland Research and Innovation Centre, Grange, Dunsany, Co. Meath, Ireland
| | - J. A. Browne
- School of Agriculture, Food Science and Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland
| | - D. A. Magee
- School of Agriculture, Food Science and Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland
| | - D. A. Kenny
- Animal and Bioscience Research Department, Animal and Grassland Research and Innovation Centre, Teagasc, Dunsany, Co. Meath, Ireland
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Boldt HB, Bale LK, Resch ZT, Oxvig C, Overgaard MT, Conover CA. Effects of mutated pregnancy-associated plasma protein-a on atherosclerotic lesion development in mice. Endocrinology 2013; 154:246-52. [PMID: 23161866 PMCID: PMC3529381 DOI: 10.1210/en.2012-1552] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Pregnancy-associated plasma protein-A (PAPP-A) is a large multidomain metalloprotease involved in cleavage of IGF binding protein (IGFBP)-4 and -5 thereby causing release of bioactive IGF. Individual domains of PAPP-A have been characterized in vitro, including the metzincin proteolytic domain important for IGFBP proteolytic activity, short consensus repeats critical for cell surface association, and Lin-12/Notch repeat module demonstrated to determine IGFBP substrate specificity. To test the hypothesis that specific cleavage of IGFBP-4 by PAPP-A in close proximity to the cell surface is required for development of lesions in a murine model of atherosclerosis, the following PAPP-A transgenic (Tg) mice were generated: Tg(E483A), which lacks all PAPP-A proteolytic activity; Tg(D1499A), which selectively lacks proteolytic activity against IGFBP-4; and Tg(K1296A/K1316A), in which cell surface binding is compromised. Following cross-breeding with apolipoprotein E (ApoE) knockout (KO) mice, ApoE KO/Tg mice were fed a high-fat diet to promote aortic lesion development. Lesion area was increased 2-fold in aortas from ApoE KO/Tg wild-type compared with ApoE KO mice (P < 0.001). However, there was no significant increase in the lesion area in any of the ApoE KO/Tg mutant mice. We conclude that PAPP-A proteolytic activity is required for the lesion-promoting effect of PAPP-A and that its specificity must be directed against IGFBP-4. Furthermore, our data demonstrate that cleavage of IGFBP-4 at a distance from the cell surface, and hence from the IGF receptor, is not effective in promoting the development of the atherosclerotic lesions. Thus, PAPP-A exerts its effect while bound to the cell surface in vivo.
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Affiliation(s)
- Henning B Boldt
- Division of Endocrinology and Metabolism, Mayo Clinic, Rochester, MN 55905, USA
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Ahtiainen M, Pöllänen E, Ronkainen PHA, Alen M, Puolakka J, Kaprio J, Sipilä S, Kovanen V. Age and estrogen-based hormone therapy affect systemic and local IL-6 and IGF-1 pathways in women. AGE (DORDRECHT, NETHERLANDS) 2012; 34:1249-1260. [PMID: 21845403 PMCID: PMC3448994 DOI: 10.1007/s11357-011-9298-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Accepted: 07/25/2011] [Indexed: 05/31/2023]
Abstract
A thorough understanding of the role of estrogens on aging-related muscle weakness is lacking. To clarify the molecular mechanisms underlying the effects of hormone replacement therapy (HRT) on skeletal muscle, we analyzed systemic protein and local mRNA levels of factors related to interleukin 6 (IL-6) and insulin-like growth factor 1 (IGF-1) pathways in 30- to 35-year-old (n = 14) women (without hormonal contraceptives) and in 54- to 62-year-old monozygotic female twin pairs discordant for HRT (n = 11 pairs, mean duration of HRT 7.3 ± 3.7 years). Biopsies were taken from vastus lateralis muscle and from abdominal adipose tissue. We found, first, that the systemic levels of IL-6 receptors sIL-6R and sgp130 are sensitive to both age and HRT concomitant with the changes in body composition. The serum levels of sgp130 and sIL-6R were 16% and 52% (p ≤ 0.001 for both variables) higher in postmenopausal women than in premenopausal women, and 10% and 9% lower (p = 0.033 and p < 0.001, respectively) in the HRT using than in their non using co-twins. After adjustment for body fat amount, the differences were no more significant. Second, the transcript analyses emphasize the impact of adipose tissue on systemic levels of IL-6, sgp130 and sIL6R, both at pre- and postmenopausal age. In muscle, the most notable changes were 28% lower gene expression of IGF-1 splice variant Ea (IGF-1Ea) and 40% lower expression of splice variant Ec (IGF-1Ec) in the postmenopausal non-users than in premenopausal women (p = 0.016 and 0.019, respectively), and 28% higher expression of IGF1-receptor in HRT users than in non-users (p = 0.060). The results tend to demonstrate that HRT has positive anti-catabolic effect on aging skeletal muscle.
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Affiliation(s)
- Maarit Ahtiainen
- Gerontology Research Center, Department of Health Sciences, University of Jyväskylä, Jyväskylä, Finland.
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The Lsktm1 locus modulates lung and skin tumorigenesis in the mouse. G3-GENES GENOMES GENETICS 2012; 2:1041-6. [PMID: 22973541 PMCID: PMC3429918 DOI: 10.1534/g3.112.003525] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2012] [Accepted: 06/27/2012] [Indexed: 02/06/2023]
Abstract
Alleles derived from skin tumor−resistant Car-R mice provide resistance to both skin and lung tumorigenesis over the susceptibility of the SWR/J strain. In an effort to map tumor modifier loci affecting both tumor types, we carried out a genetic linkage analysis in backcross SWR/J x (SWR/J x Car-R) mice and identified a locus (Lsktm1) on chromosome 1 linked to both skin (LOD score = 3.93) and lung (LOD score = 8.74) tumorigenesis. Two genes, Igfbp5 and Igfbp2, residing in this locus and belonging to the insulin-like growth factor binding protein family were expressed at significantly greater levels in normal lung tissue from cancer-resistant Car-R mice than in cancer-susceptible SWR/J mice. Overexpression of the recombinant Igfbp5 and Igfbp2 genes in two lung cancer cell lines significantly inhibited clonogenicity (P < 0.0001). Collectively, we have identified a single polymorphic locus that affects skin and lung tumorigenesis and identify Igfbp5 and Igfbp2 as candidate modifier genes of lung tumorigenesis.
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Kiepe D, Tönshoff B. Insulin-like growth factors in normal and diseased kidney. Endocrinol Metab Clin North Am 2012; 41:351-74, vii. [PMID: 22682635 DOI: 10.1016/j.ecl.2012.04.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
This article reviews the physiology of the insulin-like growth factor (IGF) system in the kidney and the changes and potential role of this system in selected renal diseases. The potential therapeutic uses of recombinant human IGF-I for the treatment of acute and chronic kidney failure are briefly discussed.
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Affiliation(s)
- Daniela Kiepe
- Department of Pediatrics I, University Children's Hospital Heidelberg, INF 430, D-69120 Heidelberg, Germany.
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Wang XJ, Shi JJ, Yang JF, Liang Y, Wang YF, Wu ML, Li SY, Guo XD, Wang ZG, Liu DJ. Molecular Characterization and Expression Pattern of Gene IGFBP-5 in the Cashmere Goat (Capra hircus). ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2012; 25:606-12. [PMID: 25049603 PMCID: PMC4093108 DOI: 10.5713/ajas.2011.11290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Revised: 12/01/2011] [Accepted: 10/25/2011] [Indexed: 11/27/2022]
Abstract
Insulin-like growth factor-binding protein-5 (IGFBP-5) is one of the six members of IGFBP family, important for cell growth, apoptosis and other IGF-stimulated signaling pathways. In order to explore the significance of IGFBP-5 in cells of the Inner Mongolian Cashmere goat (Capra hircus), IGFBP-5 gene complementary DNA (cDNA) was amplified by reverse transcription polymerase chain reaction (RT-PCR) from the animal’s fetal fibroblasts and tissue-specific expression analysis was performed by semi-quantitative RT-PCR. The gene is 816 base pairs (bp) in length and includes the complete open reading frame, encoding 271 amino acids (GenBank accession number JF720883). The full cDNA nucleotide sequence has a 99% identity with sheep, 98% with cattle and 95% with human. The amino acids sequence shares identity with 99%, 99% and 99%, respectively. The bioinformatics analysis showed that IGFBP-5 has an insulin growth factor-binding protein homologues (IB) domain and a thyroglobulin type-1 (TY) domain, four protein kinase C phosphorylation sites, five casein kinase II phosphorylation sites, three prenyl group binding sites (CaaX box). The IGFBP-5 gene was expressed in all the tested tissues including testis, brain, liver, lung, mammary gland, spleen, and kidney, suggesting that IGFBP-5 plays an important role in goat cells.
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Affiliation(s)
- X J Wang
- College of Life Science, Inner Mongolia University, The Key Laboratory of Mammal Reproductive Biology and Biotechnology, Ministry of Education, Hohhot 010021, China
| | - J J Shi
- College of Life Science, Inner Mongolia University, The Key Laboratory of Mammal Reproductive Biology and Biotechnology, Ministry of Education, Hohhot 010021, China ; School of life Sciences and Technology, Tongji University, Siping Road, Yangpu District, Shanghai 200092, China
| | - J F Yang
- College of Life Science, Inner Mongolia University, The Key Laboratory of Mammal Reproductive Biology and Biotechnology, Ministry of Education, Hohhot 010021, China
| | - Y Liang
- College of Life Science, Inner Mongolia University, The Key Laboratory of Mammal Reproductive Biology and Biotechnology, Ministry of Education, Hohhot 010021, China
| | - Y F Wang
- College of Life Science, Inner Mongolia University, The Key Laboratory of Mammal Reproductive Biology and Biotechnology, Ministry of Education, Hohhot 010021, China
| | - M L Wu
- College of Life Science, Inner Mongolia University, The Key Laboratory of Mammal Reproductive Biology and Biotechnology, Ministry of Education, Hohhot 010021, China
| | - S Y Li
- College of Life Science, Inner Mongolia University, The Key Laboratory of Mammal Reproductive Biology and Biotechnology, Ministry of Education, Hohhot 010021, China
| | - X D Guo
- College of Life Science, Inner Mongolia University, The Key Laboratory of Mammal Reproductive Biology and Biotechnology, Ministry of Education, Hohhot 010021, China
| | - Z G Wang
- College of Life Science, Inner Mongolia University, The Key Laboratory of Mammal Reproductive Biology and Biotechnology, Ministry of Education, Hohhot 010021, China
| | - D J Liu
- College of Life Science, Inner Mongolia University, The Key Laboratory of Mammal Reproductive Biology and Biotechnology, Ministry of Education, Hohhot 010021, China
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Murali SG, Brinkman AS, Solverson P, Pun W, Pintar JE, Ney DM. Exogenous GLP-2 and IGF-I induce a differential intestinal response in IGF binding protein-3 and -5 double knockout mice. Am J Physiol Gastrointest Liver Physiol 2012; 302:G794-804. [PMID: 22281475 PMCID: PMC3355561 DOI: 10.1152/ajpgi.00372.2011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Glucagon-like peptide-2 (GLP-2) action is dependent on intestinal expression of IGF-I, and IGF-I action is modulated by IGF binding proteins (IGFBP). Our objective was to evaluate whether the intestinal response to GLP-2 or IGF-I is dependent on expression of IGFBP-3 and -5. Male, adult mice in six treatment groups, three wild-type (WT) and three double IGFBP-3/-5 knockout (KO), received twice daily intraperitoneal injections of GLP-2 (0.5 μg/g body wt), IGF-I (4 μg/g body wt), or PBS (vehicle) for 7 days. IGFBP-3/-5 KO mice showed a phenotype of lower plasma IGF-I concentration, but greater body weight and relative mass of visceral organs, compared with WT mice (P < 0.001). WT mice showed jejunal growth with either IGF-I or GLP-2 treatment. In KO mice, IGF-I did not stimulate jejunal growth, crypt mitosis, sucrase activity, and IGF-I receptor (IGF-IR) expression, suggesting that the intestinotrophic actions of IGF-I are dependent on expression of IGFBP-3 and -5. In KO mice, GLP-2 induced significant increases in jejunal mucosal cellularity, crypt mitosis, villus height, and crypt depth that was associated with increased expression of the ErbB ligand epiregulin and decreased expression of IGF-I and IGF-IR. This suggests that in KO mice, GLP-2 action in jejunal mucosa is independent of the IGF-I system and linked with ErbB ligands. In summary, the intestinotrophic actions of IGF-I, but not GLP-2, in mucosa are dependent on IGFBP-3 and -5. These findings support the role of multiple downstream mediators for the mucosal growth induced by GLP-2.
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Affiliation(s)
| | - Adam S. Brinkman
- Departments of 1Nutritional Sciences and ,2Surgery, School of Medicine and Public Health, University
of Wisconsin-Madison, Madison, Wisconsin;
| | | | - Wing Pun
- Departments of 1Nutritional Sciences and
| | - John E. Pintar
- 3Department of Neuroscience and Cell Biology, Robert Wood
Johnson Medical School, University of Medicine and Dentistry of New Jersey,
Piscataway, New Jersey
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Güllü G, Karabulut S, Akkiprik M. Functional roles and clinical values of insulin-like growth factor-binding protein-5 in different types of cancers. CHINESE JOURNAL OF CANCER 2012; 31:266-80. [PMID: 22313597 PMCID: PMC3777492 DOI: 10.5732/cjc.011.10405] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Insulin-like growth factor-binding proteins (IGFBPs) are critical regulators of the mitogenic activity of insulin-like growth factors (IGFs). IGFBP5, one of these IGFBPs, has special structural features, including a nuclear transport domain, heparin-binding motif, and IGF/extracellular matrix/acid-labile subunit-binding sites. Furthermore, IGFBP5 has several functional effects on carcinogenesis and even normal cell processes, such as cell growth, death, motility, and tissue remodeling. These biological effects are sometimes related with IGF (IGF-dependent effects) and sometimes not (IGF-independent effects). The functional role of IGFBP5 is most likely determined in a cell-type and tissue-type specific manner but also depends on cell context, especially in terms of the diversity of interacting proteins and the potential for nuclear localization. Clinical findings show that IGFBP5 has the potential to be a useful clinical biomarker for predicting response to therapy and clinical outcome of cancer patients. In this review, we summarize the functional diversity and clinical importance of IGFBP5 in different types of cancers.
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Affiliation(s)
- Gökçe Güllü
- Department of Medical Biology, School of Medicine, DMarmara University, Istanbul 34468, Turkey
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50
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Nili M, Mukherjee A, Shinde U, David L, Rotwein P. Defining the disulfide bonds of insulin-like growth factor-binding protein-5 by tandem mass spectrometry with electron transfer dissociation and collision-induced dissociation. J Biol Chem 2011; 287:1510-9. [PMID: 22117064 DOI: 10.1074/jbc.m111.285528] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The six high-affinity insulin-like growth factor-binding proteins (IGFBPs) comprise a conserved family of secreted molecules that modulate IGF actions by regulating their half-life and access to signaling receptors, and also exert biological effects that are independent of IGF binding. IGFBPs are composed of cysteine-rich amino- (N-) and carboxyl- (C-) terminal domains, along with a cysteine-poor central linker segment. IGFBP-5 is the most conserved IGFBP, and contains 18 cysteines, but only 2 of 9 putative disulfide bonds have been mapped to date. Using a mass spectrometry (MS)-based strategy combining sequential electron transfer dissociation (ETD) and collision-induced dissociation (CID) steps, in which ETD fragmentation preferentially induces cleavage of disulfide bonds, and CID provides exact disulfide linkage assignments between liberated peptides, we now have definitively mapped 5 disulfide bonds in IGFBP-5. In addition, in conjunction with ab initio molecular modeling we are able to assign the other 4 disulfide linkages to within a GCGCCXXC motif that is conserved in five IGFBPs. Because of the nature of ETD fragmentation MS experiments were performed without chemical reduction of IGFBP-5. Our results not only establish a disulfide bond map of IGFBP-5 but also define a general approach that takes advantage of the specificity of ETD and the scalability of tandem MS, and the predictive power of ab initio molecular modeling to characterize unknown disulfide linkages in proteins.
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Affiliation(s)
- Mahta Nili
- Department of Biochemistry and Molecular Biology, Oregon Health & Science University, Portland, Oregon 97239-3098, USA
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