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Yang H, Yuan L, Ibaragi S, Li S, Shapiro R, Vanli N, Goncalves KA, Yu W, Kishikawa H, Jiang Y, Hu AJ, Jay D, Cochran B, Holland EC, Hu GF. Angiogenin and plexin-B2 axis promotes glioblastoma progression by enhancing invasion, vascular association, proliferation and survival. Br J Cancer 2022; 127:422-435. [PMID: 35418212 PMCID: PMC9345892 DOI: 10.1038/s41416-022-01814-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 03/25/2022] [Accepted: 03/31/2022] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Angiogenin is a multifunctional secreted ribonuclease that is upregulated in human cancers and downregulated or mutationally inactivated in neurodegenerative diseases. A role for angiogenin in glioblastoma was inferred from the inverse correlation of angiogenin expression with patient survival but had not been experimentally investigated. METHODS Angiogenin knockout mice were generated and the effect of angiogenin deficiency on glioblastoma progression was examined. Angiogenin and plexin-B2 genes were knocked down in glioblastoma cells and the changes in cell proliferation, invasion and vascular association were examined. Monoclonal antibodies of angiogenin and small molecules were used to assess the therapeutic activity of the angiogenin-plexin-B2 pathway in both genetic and xenograft animal models. RESULTS Deletion of Ang1 gene prolonged survival of PDGF-induced glioblastoma in mice in the Ink4a/Arf-/-:Pten-/- background, accompanied by decreased invasion, vascular association and proliferation. Angiogenin upregulated MMP9 and CD24 leading to enhanced invasion and vascular association. Inhibition of angiogenin or plexin-B2, either by shRNA, monoclonal antibody or small molecule inhibitor, decreases sphere formation of patient-derived glioma stem cells, reduces glioblastoma proliferation and invasion and inhibits glioblastoma growth in both genetic and xenograft animal models. CONCLUSIONS Angiogenin and its receptor, plexin-B2, are a pair of novel regulators that mediate invasion, vascular association and proliferation of glioblastoma cells. Inhibitors of the angiogenin-plexin-B2 axis have therapeutic potential against glioblastoma.
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Affiliation(s)
- Hailing Yang
- Division of Hematology and Oncology, Department of Medicine, Tufts Medical Center, Boston, MA, USA.,Program in Cellular and Molecular Physiology, Graduate School of Biomedical Sciences, Tufts University, Boston, MA, USA
| | - Liang Yuan
- Division of Hematology and Oncology, Department of Medicine, Tufts Medical Center, Boston, MA, USA.,Program in Cell, Molecular, and Developmental Biology, Graduate School of Biomedical Sciences, Tufts University, Boston, MA, USA
| | - Soichiro Ibaragi
- Department of Pathology, Harvard Medical School, Boston, MA, USA
| | - Shuping Li
- Division of Hematology and Oncology, Department of Medicine, Tufts Medical Center, Boston, MA, USA.,Department of Pathology, Harvard Medical School, Boston, MA, USA
| | - Robert Shapiro
- Department of Pathology, Harvard Medical School, Boston, MA, USA
| | - Nil Vanli
- Division of Hematology and Oncology, Department of Medicine, Tufts Medical Center, Boston, MA, USA.,Program in Biochemistry, Graduate School of Biomedical Sciences, Tufts University, Boston, MA, USA
| | - Kevin A Goncalves
- Division of Hematology and Oncology, Department of Medicine, Tufts Medical Center, Boston, MA, USA.,Program in Cellular and Molecular Physiology, Graduate School of Biomedical Sciences, Tufts University, Boston, MA, USA
| | - Wenhao Yu
- Division of Hematology and Oncology, Department of Medicine, Tufts Medical Center, Boston, MA, USA.,Department of Pathology, Harvard Medical School, Boston, MA, USA
| | - Hiroko Kishikawa
- Division of Hematology and Oncology, Department of Medicine, Tufts Medical Center, Boston, MA, USA.,Department of Pathology, Harvard Medical School, Boston, MA, USA
| | - Yuxiang Jiang
- Division of Hematology and Oncology, Department of Medicine, Tufts Medical Center, Boston, MA, USA
| | - Alexander J Hu
- Division of Hematology and Oncology, Department of Medicine, Tufts Medical Center, Boston, MA, USA.,Program in Cell, Molecular, and Developmental Biology, Graduate School of Biomedical Sciences, Tufts University, Boston, MA, USA
| | - Daniel Jay
- Program in Cellular and Molecular Physiology, Graduate School of Biomedical Sciences, Tufts University, Boston, MA, USA.,Program in Cell, Molecular, and Developmental Biology, Graduate School of Biomedical Sciences, Tufts University, Boston, MA, USA.,Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, MA, USA
| | - Brent Cochran
- Program in Cellular and Molecular Physiology, Graduate School of Biomedical Sciences, Tufts University, Boston, MA, USA.,Program in Cell, Molecular, and Developmental Biology, Graduate School of Biomedical Sciences, Tufts University, Boston, MA, USA.,Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, MA, USA
| | - Eric C Holland
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Guo-Fu Hu
- Division of Hematology and Oncology, Department of Medicine, Tufts Medical Center, Boston, MA, USA. .,Program in Cellular and Molecular Physiology, Graduate School of Biomedical Sciences, Tufts University, Boston, MA, USA. .,Program in Cell, Molecular, and Developmental Biology, Graduate School of Biomedical Sciences, Tufts University, Boston, MA, USA. .,Department of Pathology, Harvard Medical School, Boston, MA, USA. .,Program in Biochemistry, Graduate School of Biomedical Sciences, Tufts University, Boston, MA, USA.
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Queck A, Uschner FE, Ferstl PG, Schulz M, Brol MJ, Praktiknjo M, Schierwagen R, Klein S, Strassburg CP, Meyer C, Jansen C, Berres ML, Trebicka J. Role of circulating angiogenin levels in portal hypertension and TIPS. PLoS One 2021; 16:e0256473. [PMID: 34432848 PMCID: PMC8386873 DOI: 10.1371/journal.pone.0256473] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 08/06/2021] [Indexed: 02/06/2023] Open
Abstract
Background Pathogenesis of portal hypertension is multifactorial and includes pathologic intrahepatic angiogenesis, whereby TIPS insertion is an effective therapy of portal hypertension associated complications. While angiogenin is a potent contributor to angiogenesis in general, little is known about its impact on TIPS function over time. Methods In a total of 118 samples from 47 patients, angiogenin concentrations were measured in portal and inferior caval vein plasma at TIPS insertion (each blood compartment n = 23) or angiographic intervention after TIPS (each blood compartment n = 36) and its relationship with patient outcome was investigated. Results Angiogenin levels in the inferior caval vein were significantly higher compared to the portal vein (P = 0.048). Ten to 14 days after TIPS, inferior caval vein angiogenin level correlated inversely with the portal systemic pressure gradient (P<0.001), measured invasively during control angiography. Moreover, patients with TIPS revision during this angiography, showed significantly lower angiogenin level in the inferior caval vein compared to patients without TIPS dysfunction (P = 0.01). Conclusion In cirrhosis patients with complications of severe portal hypertension, circulating levels of angiogenin are derived from the injured liver. Moreover, angiogenin levels in the inferior caval vein after TIPS may predict TIPS dysfunction.
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Affiliation(s)
- Alexander Queck
- Department of Internal Medicine 1, University Hospital, Johann Wolfgang Goethe-University, Frankfurt am Main, Germany
| | - Frank E. Uschner
- Department of Internal Medicine 1, University Hospital, Johann Wolfgang Goethe-University, Frankfurt am Main, Germany
| | - Philip G. Ferstl
- Department of Internal Medicine 1, University Hospital, Johann Wolfgang Goethe-University, Frankfurt am Main, Germany
| | - Martin Schulz
- Department of Internal Medicine 1, University Hospital, Johann Wolfgang Goethe-University, Frankfurt am Main, Germany
| | - Maximilian J. Brol
- Department of Internal Medicine 1, University Hospital, Johann Wolfgang Goethe-University, Frankfurt am Main, Germany
| | - Michael Praktiknjo
- Department of Internal Medicine I, University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Robert Schierwagen
- Department of Internal Medicine 1, University Hospital, Johann Wolfgang Goethe-University, Frankfurt am Main, Germany
| | - Sabine Klein
- Department of Internal Medicine 1, University Hospital, Johann Wolfgang Goethe-University, Frankfurt am Main, Germany
| | - Christian P. Strassburg
- Department of Internal Medicine I, University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Carsten Meyer
- Department of Radiology, University Hospital, University Bonn, Bonn, Germany
| | - Christian Jansen
- Department of Internal Medicine I, University Hospital Bonn, University of Bonn, Bonn, Germany
| | | | - Jonel Trebicka
- Department of Internal Medicine 1, University Hospital, Johann Wolfgang Goethe-University, Frankfurt am Main, Germany
- European Foundation for the Study of Chronic Liver Failure, Barcelona, Spain
- * E-mail:
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Wang YN, Lee HH, Hung MC. A novel ligand-receptor relationship between families of ribonucleases and receptor tyrosine kinases. J Biomed Sci 2018; 25:83. [PMID: 30449278 PMCID: PMC6241042 DOI: 10.1186/s12929-018-0484-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 11/01/2018] [Indexed: 12/13/2022] Open
Abstract
Pancreatic ribonuclease is known to participate in host defense system against pathogens, such as parasites, bacteria, and virus, which results in innate immune response. Nevertheless, its potential impact to host cells remains unclear. Of interest, several ribonucleases do not act as catalytically competent enzymes, suggesting that ribonucleases may be associated with certain intrinsic functions other than their ribonucleolytic activities. Most recently, human pancreatic ribonuclease 5 (hRNase5; also named angiogenin; hereinafter referred to as hRNase5/ANG), which belongs to the human ribonuclease A superfamily, has been demonstrated to function as a ligand of epidermal growth factor receptor (EGFR), a member of the receptor tyrosine kinase family. As a newly identified EGFR ligand, hRNase5/ANG associates with EGFR and stimulates EGFR and the downstream signaling in a catalytic-independent manner. Notably, hRNase5/ANG, whose level in sera of pancreatic cancer patients, serves as a non-invasive serum biomarker to stratify patients for predicting the sensitivity to EGFR-targeted therapy. Here, we describe the hRNase5/ANG-EGFR pair as an example to highlight a ligand-receptor relationship between families of ribonucleases and receptor tyrosine kinases, which are thought as two unrelated protein families associated with distinct biological functions. The notion of serum biomarker-guided EGFR-targeted therapies will also be discussed. Furthering our understanding of this novel ligand-receptor interaction will shed new light on the search of ligands for their cognate receptors, especially those orphan receptors without known ligands, and deepen our knowledge of the fundamental research in membrane receptor biology and the translational application toward the development of precision medicine.
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Affiliation(s)
- Ying-Nai Wang
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Unit 108, 1515 Holcombe Boulevard, Houston, TX 77030 USA
| | - Heng-Huan Lee
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Unit 108, 1515 Holcombe Boulevard, Houston, TX 77030 USA
| | - Mien-Chie Hung
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Unit 108, 1515 Holcombe Boulevard, Houston, TX 77030 USA
- Graduate School of Biomedical Sciences, The University of Texas Health Science Center, Houston, TX 77030 USA
- Graduate Institute of Biomedical Sciences and Center for Molecular Medicine, China Medical University, Taichung, 404 Taiwan
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Lee SH, Kim KW, Joo K, Kim JC. Angiogenin ameliorates corneal opacity and neovascularization via regulating immune response in corneal fibroblasts. BMC Ophthalmol 2016; 16:57. [PMID: 27356868 PMCID: PMC4926301 DOI: 10.1186/s12886-016-0235-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 05/10/2016] [Indexed: 12/04/2022] Open
Abstract
Background Angiogenin (ANG), a component of tears, is involved in the innate immune system and is related with inflammatory disease. We investigated whether ANG has an immune modulatory function in human corneal fibroblasts (HCFs). Methods HCFs were cultured from excised corneal tissues. The gene or protein expression levels of interleukin (IL)-1beta (β), IL-4, IL-6, IL-8, IL-10, complements, toll-like receptor (TLR)4, myeloid differentiation primary response gene (MYD)88, TANK-binding kinase (TBK)1, IkappaB kinase-epsilon (IKK-ε) and nuclear factor-kappaB (NF-κB) were analyzed with or without ANG treatment in tumor necrosis factor-alpha (TNF-α)- or lipopolysaccharide (LPS)-induced inflammatory HCFs by real-time polymerase chain reaction (PCR), Western blotting and immunocytochemistry. Inflammatory cytokine profiles with or without ANG were evaluated through immunodot blot analysis in inflammatory HCFs. Corneal neovascularization and opacity in a rat model of corneal alkali burn were evaluated after application of ANG eye drops. Results ANG decreased the mRNA levels of IL-1β, IL-6, IL-8, TNF-α receptor (TNFR)1, 2, TLR4, MYD88, and complement components except for C1r and C1s and elevated the mRNA expression of IL-4 and IL-10. Increased signal intensity of IL-6, IL-8 and monocyte chemotactic protein (MCP)-1 and MCP-2 induced by TNF-α or LPS was weakened by ANG treatment. ANG reduced the protein levels of IKK-ε by either TNF-α and LPS, and decreased TBK1 production induced by TNF-α, but not induced by LPS. The expression of NF-κB in the nuclei was decreased after ANG treatment. ANG application lowered corneal neovascularization and opacity in rats compared to controls. Conclusion These results demonstrate that ANG reduces the inflammatory response induced by TNF-α or LPS in HCFs through common suppression of IKK-ε-mediated activation of NF-κB. This may support the targeting of immune-mediated corneal inflammation by using ANG.
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Affiliation(s)
- Seung Hoon Lee
- Department of Ophthalmology, College of Medicine, Chung-Ang University Hospital, 224-1, Heukseok-dong, Dongjak-Gu, Seoul, 156-755, Republic of Korea.,Graduate School of Chung-Ang University, College of Medicine, Seoul, Republic of Korea
| | - Kyoung Woo Kim
- Department of Ophthalmology, College of Medicine, Chung-Ang University Hospital, 224-1, Heukseok-dong, Dongjak-Gu, Seoul, 156-755, Republic of Korea.,Graduate School of Chung-Ang University, College of Medicine, Seoul, Republic of Korea
| | - Kwangsic Joo
- Department of Ophthalmology, College of Medicine, Chung-Ang University Hospital, 224-1, Heukseok-dong, Dongjak-Gu, Seoul, 156-755, Republic of Korea.,Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, Republic of Korea
| | - Jae Chan Kim
- Department of Ophthalmology, College of Medicine, Chung-Ang University Hospital, 224-1, Heukseok-dong, Dongjak-Gu, Seoul, 156-755, Republic of Korea.
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Dentis JL, Schreiber NB, Gilliam JN, Schutz LF, Spicer LJ. Changes in brain ribonuclease (BRB) messenger RNA in granulosa cells (GCs) of dominant vs subordinate ovarian follicles of cattle and the regulation of BRB gene expression in bovine GCs. Domest Anim Endocrinol 2016; 55:32-40. [PMID: 26773365 PMCID: PMC4779677 DOI: 10.1016/j.domaniend.2015.10.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Revised: 10/26/2015] [Accepted: 10/26/2015] [Indexed: 11/15/2022]
Abstract
Brain ribonuclease (BRB) is a member of the ribonuclease A superfamily that is constitutively expressed in a range of tissues and is the functional homolog of human ribonuclease 1. This study was designed to characterize BRB gene expression in granulosa cells (GCs) during development of bovine dominant ovarian follicles and to determine the hormonal regulation of BRB in GCs. Estrous cycles of Holstein cows (n = 18) were synchronized, and cows were ovariectomized on either day 3 to 4 or day 5 to 6 after ovulation during dominant follicle growth and selection. Ovaries were collected, follicular fluid (FFL) was aspirated, and GCs were collected for RNA isolation and quantitative polymerase chain reaction. Follicles were categorized as small (1-5 mm; pooled per ovary), medium (5-8 mm; individually collected), or large (8.1-17 mm; individually collected) based on surface diameter. Estradiol (E2) and progesterone (P4) levels were measured by radioimmunoassay (RIA) in FFL. Abundance of BRB messenger RNA (mRNA) in GCs was 8.6- to 11.8-fold greater (P < 0.05) in small (n = 31), medium (n = 66), and large (n = 33) subordinate E2-inactive (FFL E2 < P4) follicles than in large (n = 16) dominant E2-active (FFL E2 > P4) follicles. In the largest 4 follicles, GCs BRB mRNA abundance was negatively correlated (P < 0.01) with FFL E2 (r = -0.65) and E2:P4 ratio (r = -0.46). In experiment 2, GCs from large (8-22 mm diameter) and small (1-5 mm diameter) follicles were treated with insulin-like growth factor 1 (IGF1; 0 or 30 ng/mL) and/or tumor necrosis factor alpha (0 or 30 ng/mL); IGF1 increased (P < 0.05) BRB mRNA abundance, and tumor necrosis factor alpha decreased (P < 0.001) the IGF1-induced BRB mRNA abundance in large-follicle GCs. In experiment 3 to 6, E2, follicle-stimulating hormone, fibroblast growth factor 9, cortisol, wingless 3A, or sonic hedgehog did not affect (P > 0.10) abundance of BRB mRNA in GCs; thyroxine and luteinizing hormone increased (P < 0.05), whereas prostaglandin E2 (PGE2) decreased (P < 0.05) BRB mRNA abundance in small-follicle GCs. Treatment of small-follicle GCs with recombinant human RNase1 increased (P < 0.05) GCs numbers and E2 production. In conclusion, BRB is a hormonally and developmentally regulated gene in bovine GCs and may regulate E2 production during follicular growth in cattle.
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Affiliation(s)
- J L Dentis
- Department of Animal Science, Oklahoma State University, Stillwater, OK, 74078, USA
| | - N B Schreiber
- Department of Animal Science, Oklahoma State University, Stillwater, OK, 74078, USA
| | - J N Gilliam
- Department of Veterinary Clinical Sciences, Oklahoma State University, Stillwater, OK, 74078, USA
| | - L F Schutz
- Department of Animal Science, Oklahoma State University, Stillwater, OK, 74078, USA
| | - L J Spicer
- Department of Animal Science, Oklahoma State University, Stillwater, OK, 74078, USA.
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Angiogenin secretion from hepatoma cells activates hepatic stellate cells to amplify a self-sustained cycle promoting liver cancer. Sci Rep 2015; 5:7916. [PMID: 25604905 PMCID: PMC4300499 DOI: 10.1038/srep07916] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 12/22/2014] [Indexed: 12/24/2022] Open
Abstract
Hepatocellular carcinoma (HCC) frequently develops in a pro-inflammatory and pro-fibrogenic environment with hepatic stellate cells (HSCs) remodeling the extracellular matrix composition. Molecules secreted by liver tumors contributing to HSC activation and peritumoral stromal transformation remain to be fully identified. Here we show that conditioned medium from HCC cell lines, Hep3B and HepG2, induced primary mouse HSCs transdifferentiation, characterized by profibrotic properties and collagen modification, with similar results seen in the human HSC cell line LX2. Moreover, tumor growth was enhanced by coinjection of HepG2/LX2 cells in a xenograft murine model, supporting a HCC-HSC crosstalk in liver tumor progression. Protein microarray secretome analyses revealed angiogenin as the most robust and selective protein released by HCC compared to LX2 secreted molecules. In fact, recombinant angiogenin induced in vitro HSC activation requiring its nuclear translocation and rRNA transcriptional stimulation. Moreover, angiogenin antagonism by blocking antibodies or angiogenin inhibitor neomycin decreased in vitro HSC activation by conditioned media or recombinant angiogenin. Finally, neomycin administration reduced tumor growth of HepG2-LX2 cells coinjected in mice. In conclusion, angiogenin secretion by HCCs favors tumor development by inducing HSC activation and ECM remodeling. These findings indicate that targeting angiogenin signaling may be of potential relevance in HCC management.
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Matter RM, Abdelmaksoud AA, Shams MA, Bebawy EK. Serum angiogenin level in sickle cell disease and beta thalassemia patients. Pediatr Hematol Oncol 2014; 31:50-6. [PMID: 24483841 DOI: 10.3109/08880018.2013.876471] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
INTRODUCTION Angiogenesis has been investigated in different kinds of anemia. However, its role as a marker of angiogenesis has not been investigated in thalassemia or sickle cell disease (SCD). OBJECTIVES We aimed to investigate serum angiogenin level in children and adolescents with beta thalassemia or SCD and its relation to possible risk factors of angiogenesis. MATERIALS AND METHODS This study included; 32 β-thalassemia major (β-TM) patients aged 14.2 ± 3.8 years, 20 β-thalassemia intermedia (β-TI) patients aged 14.3 ± 4.8 years, 20 SCD patients aged 14.1 ± 2.4 years; 8 with (HbSS) and 12 with sickle thalassemia (HbS/β-thalassemia) and 35 age and sex-matched controls. Data collected regarding; age, sex, disease duration, blood transfusion frequency, transfusion index, chelation type and duration, CBC, Hb electrophoresis, serum ferritin and serum angiogenin level (by ELISA). RESULTS Angiogenin level was significantly higher in patients with SCD [250 (100-300) pg/mL] compared to β-TM [180 (140-230) pg/mL] and controls [89 (80-103) pg/mL] (P < .001) especially those with HbSS (P = .06). There was a significant negative correlation between serum angiogenin and age of patients, age of onset and duration of chelation in β-TM (P < .01, P < .001, P = .003) and β-TI (P = .009, P = .03, P < .001) and with serum ferritin in β-TI group (r = -0.573, P = .008). In SCD, angiogenin level was negatively correlated with both frequency of blood transfusion (r = -0.731, P < .001) and duration of hydroxyurea therapy (P = .017). CONCLUSIONS High angiogenin level detected among patients with SCD may be negatively influenced by regular blood transfusion and hydroxyurea therapy, while; early onset of chelation therapy may decrease angiogenin level in β-TM.
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Affiliation(s)
- Randa M Matter
- Department of Pediatrics, Ain Shams University , Cairo , Egypt
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Eleftheriadis T, Kartsios C, Pissas G, Liakopoulos V, Antoniadi G, Galaktidou G, Stefanidis I. Increased Plasma Angiogenin Level is Associated and May Contribute to Decreased T-Cell Zeta-Chain Expression in Hemodialysis Patients. Ther Apher Dial 2012; 17:48-54. [DOI: 10.1111/j.1744-9987.2012.01135.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Li S, Hu GF. Emerging role of angiogenin in stress response and cell survival under adverse conditions. J Cell Physiol 2012; 227:2822-6. [PMID: 22021078 PMCID: PMC3271170 DOI: 10.1002/jcp.23051] [Citation(s) in RCA: 122] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Angiogenin (ANG), also known as ribonuclease (RNASE) 5, is a member of the vertebrate-specific, secreted RNASE superfamily. ANG was originally identified as a tumor angiogenic factor, but its biological activity has been extended from inducing angiogenesis to stimulating cell proliferation and more recently, to promoting cell survival. Under growth conditions, ANG is translocated to nucleus where it accumulates in nucleolus and stimulates ribosomal RNA (rRNA) transcription, thus facilitating cell growth and proliferation. Under stress conditions, ANG is accumulated in cytoplasmic compartments and modulates the production of tiRNA, a novel class of small RNA that is derived from tRNA and is induced by stress. tiRNA suppress global protein translation by inhibiting both cap-dependent and -independent translation including that mediated by weak IRESes. However, strong IRES-mediated translation, a mechanism often used by genes involved in pro-survival and anti-apoptosis, is not affected. Thus, ANG-mediated tiRNA reprogram protein translation, save anabolic energy, and promote cell survival. This recently uncovered function of ANG presents a novel mechanism of action in regulating cell growth and survival.
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Affiliation(s)
- Shuping Li
- Molecular Oncology Research Institute, Tufts Medical Center, Boston, MA, USA
- State Key Laboratory for Diagnosis and Treatment of Infectious Disease, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Guo-Fu Hu
- Molecular Oncology Research Institute, Tufts Medical Center, Boston, MA, USA
- Graduate Program in Biochemistry, Sackler School of Graduate Biomedical Sciences, Tufts University, Boston, MA, USA
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Kaposi's sarcoma-associated herpesvirus-induced angiogenin plays roles in latency via the phospholipase C gamma pathway: blocking angiogenin inhibits latent gene expression and induces the lytic cycle. J Virol 2011; 85:2666-85. [PMID: 21209106 DOI: 10.1128/jvi.01532-10] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
During de novo infection of human dermal microvascular endothelial cells (HMVEC-d), Kaposi's sarcoma-associated herpesvirus (KSHV) induced the multifunctional angiogenin (ANG) protein, which entered the nuclei and nucleoli of infected cells and stimulated 45S rRNA gene transcription, proliferation, and tube formation, which were inhibited by blocking ANG nuclear translocation with the antibiotic neomycin (S. Sadagopan et al., J. Virol. 83:3342-3364, 2009). ANG was induced by KSHV latency protein LANA-1 (open reading frame 73 [ORF73]). Here we examined the presence and functions of ANG in KSHV-positive (KSHV(+)) primary effusion lymphoma (PEL/BCBL) cells. Significant ANG gene expression and secretion were observed in KSHV(+) (BCBL-1 and BC-3) and KSHV(+) and Epstein-Barr virus-positive (KSHV(+) EBV(+)) (JSC-1) PEL cells and in BJAB-KSHV cells but not in EBV(-) KSHV(-) lymphoma cells (Akata, Loukes, Ramos, and BJAB), EBV(+) lymphoma cells (Akata-EBV and Raji), and cells from an EBV(+) lymphoblastoid cell line, thus suggesting a specific association of ANG in KSHV biology. Inhibition of nuclear translocation of ANG resulted in reduced BCBL-1 and TIVE-LTC (latently infected endothelial) cell survival and proliferation, while EBV(-) and EBV(+) Akata cells were unaffected. Blocking nuclear transport of ANG inhibited latent ORF73 gene expression and increased lytic switch ORF50 gene expression, both during de novo infection and in latently infected cells. A greater quantity of infectious KSHV was detected in the supernatants of neomycin-treated BCBL-1 cells than 12-O-tetradecanoylphorbol-13-acetate (TPA)-treated cells. Neomycin treatment and ANG silencing inhibited phospholipase Cγ (PLC-γ) and AKT phosphorylation, and in contrast, ANG induced ORF73 expression and PLC-γ and AKT phosphorylation. Further studies provided evidence that blockage of PLC-γ activation by neomycin appears to be mediating the inhibition of latent gene expression, since treatment with the conventional PLC-γ inhibitor U73122 also showed similar results. Silencing of ANG also resulted in reduced cell survival, reduced ORF73 gene expression, and lytic gene activation in BCBL-1 and TIVE-LTC cells and during de novo infection. Taken together, these studies suggest that KSHV has evolved to exploit ANG for its advantage via a so-far-unexplored PLC-γ pathway for maintaining its latency.
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Peters SJAC, Vanhaecke T, Papeleu P, Rogiers V, Haagsman HP, van Norren K. Co-culture of primary rat hepatocytes with rat liver epithelial cells enhances interleukin-6-induced acute-phase protein response. Cell Tissue Res 2010; 340:451-7. [PMID: 20411395 PMCID: PMC2882052 DOI: 10.1007/s00441-010-0955-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2009] [Accepted: 02/25/2010] [Indexed: 12/01/2022]
Abstract
Three different primary rat hepatocyte culture methods were compared for their ability to allow the secretion of fibrinogen and albumin under basal and IL-6-stimulated conditions. These culture methods comprised the co-culture of hepatocytes with rat liver epithelial cells (CC-RLEC), a collagen type I sandwich culture (SW) and a conventional primary hepatocyte monolayer culture (ML). Basal albumin secretion was most stable over time in SW. Fibrinogen secretion was induced by IL-6 in all cell culture models. Compared with ML, CC-RLEC showed an almost three-fold higher fibrinogen secretion under both control and IL-6-stimulated conditions. Induction of fibrinogen release by IL-6 was lowest in SW. Albumin secretion was decreased after IL-6 stimulation in both ML and CC-RLEC. Thus, cells growing under the various primary hepatocyte cell culture techniques react differently to IL-6 stimulation with regard to acute-phase protein secretion. CC-RLEC is the preferred method for studying cytokine-mediated induction of acute-phase proteins, because of the pronounced stimulation of fibrinogen secretion upon IL-6 exposure under these conditions.
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Affiliation(s)
- Stephan J. A. C. Peters
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, P.O. Box 80.165, 3508 TD Utrecht, The Netherlands
- Nutricia Advanced Medical Nutrition, Danone Centre for Specialised Nutrition, P.O. Box 7005, 6700 CA Wageningen, The Netherlands
| | - Tamara Vanhaecke
- Department of Toxicology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Peggy Papeleu
- Department of Toxicology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Vera Rogiers
- Department of Toxicology, Vrije Universiteit Brussel, Brussels, Belgium
| | - Henk P. Haagsman
- Department of Infectious Diseases and Immunology, Faculty of Veterinary Medicine, Utrecht University, P.O. Box 80.165, 3508 TD Utrecht, The Netherlands
| | - Klaske van Norren
- Nutricia Advanced Medical Nutrition, Danone Centre for Specialised Nutrition, P.O. Box 7005, 6700 CA Wageningen, The Netherlands
- Nutrition and Pharmacology Group, Division of Human Nutrition, Wageningen University, Wageningen, The Netherlands
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12
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Dvorak K, Chavarria M, Payne CM, Ramsey L, Crowley-Weber C, Dvorakova B, Dvorak B, Bernstein H, Holubec H, Sampliner RE, Bernstein C, Prasad A, Green SB, Garewal H. Activation of the interleukin-6/STAT3 antiapoptotic pathway in esophageal cells by bile acids and low pH: relevance to barrett's esophagus. Clin Cancer Res 2007; 13:5305-13. [PMID: 17875759 DOI: 10.1158/1078-0432.ccr-07-0483] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVES The molecular factors contributing to the development of Barrett's esophagus (BE) are unclear. Our previous studies showed that BE tissues secrete interleukin-6 (IL-6) and express proteins associated with IL-6 signaling, including IL-6 receptor, activated signal transducer and activators of transcription 3 (STAT3), and antiapoptotic proteins Bcl-x(L) and Mcl-1. Here, we test the hypothesis that bile acids and gastric acids, two components of refluxate associated with gastresophageal reflux disease, activate the IL-6/STAT3 pathway. MATERIALS AND METHODS Immunohistochemistry was used to assess levels of phosphorylated STAT3 in esophageal tissue samples from BE patients with different grades of dysplasia. Seg-1 esophageal adenocarcinoma cells were evaluated for STAT3 activation and IL-6 and Bcl-x(L) expression by molecular biology techniques, including Western blot, reverse transcription-PCR, and ELISA after exposure to control media (pH 7.4), media supplemented with a 0.1 mmol/L bile acid cocktail with media at pH 4 or media at pH 4 with bile acid cocktail. RESULTS Immunohistochemical analysis showed that activated, phosphorylated STAT3 is expressed in nuclei of dysplastic BE and cancer tissues. Treatment of Seg-1 cells with media containing bile acid cocktail and acidified to pH 4 resulted in increased activation of STAT3, IL-6 secretion, and increased expression of Bcl-x(L). Inhibition of the STAT3 pathway using STAT3 small interfering RNA or Janus-activated kinase inhibitor resulted in increased apoptosis. CONCLUSIONS The IL-6/STAT3 antiapoptotic pathway is induced by short exposure to bile acid cocktail and low pH. This alteration, if persistent in vivo, may underlie the development of dysplastic BE and tumor progression.
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Affiliation(s)
- Katerina Dvorak
- Department of Cell Biology and Anatomy, College of Medicine, The University of Arizona, Tucson, Arizona 85724, USA.
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13
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Dong J, Fujii S, Imagawa S, Matsumoto S, Matsushita M, Todo S, Tsutsui H, Sobel BE. IL-1 and IL-6 induce hepatocyte plasminogen activator inhibitor-1 expression through independent signaling pathways converging on C/EBPδ. Am J Physiol Cell Physiol 2007; 292:C209-15. [PMID: 16914534 DOI: 10.1152/ajpcell.00157.2006] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To elucidate signaling pathways activated by IL-1 and IL-6 that contribute to increased expression of plasminogen activator inhibitor-1 (PAI-1), we studied human hepatoma (HepG2) cells and primary mouse hepatocytes. HepG2 cell PAI-1 mRNA increased in response to IL-1β, IL-6, and IL-1β plus IL-6 as shown by real-time PCR. Activity of the transiently transfected PAI-1 promoter (−829 to +36 bp) increased as well. Systematic promoter deletion assays showed that the region from −239 to −210 bp containing a putative CCAAT-enhancer binding protein (C/EBP) binding site was critical. Point mutations in this region abolished the IL-1β and IL-6 responses. Antibody interference electrophoretic mobility shift assays showed that C/EBPδ (but not C/EBPα or C/EBPβ) binding and protein were increased by IL-1β, IL-6, and IL-1β plus IL-6 in HepG2 cells. IL-1β and IL-6 increased expression of both PAI-1 mRNA and C/EBPδ mRNA in mouse primary hepatocytes as well. Downregulation of C/EBPδ induced with small interfering RNA (siRNA) decreased secretion of PAI-1. As judged from results obtained with inhibitors, signal transduction in all three of the mitogen-activated protein kinase pathways was involved in IL-1-inducible PAI-1 expression. By contrast, JAK signaling was responsible for the IL-6-induced inducible expression. Thus IL-1 and IL-6 exert directionally similar effects on PAI-1 expression, but the induction involves distinct signaling pathways with a final common mediator, C/EBPδ.
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Affiliation(s)
- Jie Dong
- Cardiovascular Research Institute, Colchester Research Facility, University of Vermont, 208 South Park Drive, Colchester, VT 05446, USA
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14
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Pantsulaia I, Trofimov S, Kobyliansky E, Livshits G. Genetic and environmental determinants of circulating levels of angiogenin in community-based sample. Clin Endocrinol (Oxf) 2006; 64:271-9. [PMID: 16487436 DOI: 10.1111/j.1365-2265.2006.02456.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Measurement of angiogenin in plasma provides important prognostic and diagnostic information in variety of malignancies and may even correlate with cancer's progression. Nevertheless, nowadays, specific physiological mechanisms of this protein action as well as major factors regulating its circulating levels normally and in pathology are still poorly understood. The main objectives of this study were to examine the contribution of a number of endogenous factors, such as sex, age, body size and genetic effects on the production of angiogenin in apparently healthy individuals, and to assess the correlations in circulating levels between angiogenin and other molecules involved in angiogenesis. METHODS The plasma levels of angiogenin and each of the additional cytokines [interleukin-6 (IL-6), tumour necrosis factor-alpha (TNF-alpha), transforming growth factor-beta (TGF-beta), macrophage-colony stimulating factor (M-CSF), vascular endothelial growth factor (VEGF), epidermal growth factor (EGF), soluble intercellular adhesion molecule-1 (sICAM)] were determined by enzyme-linked immunoassay in a large family based sample. RESULTS Angiogenin levels were significantly higher in man than in women (360.64 +/- 104.04 ng/ml vs. 322.15 +/- 100.34 ng/ml, P < 0.01) and significantly correlated with age (P < 0.01) in both sexes. Genetic analysis showed that adjusted for potential covariates, 37.4 +/- 7.1% of angiogenin variation was attributable to putative genetic factors. The results of our study revealed that angiogenin concentrations were positively and significantly (P < 0.05) associated with sICAM, IL-6, TNF-alpha and M-CSF levels in the female cohort. CONCLUSIONS Our data provide reliable evidence for the substantial role of genetic factors in the determination of the phenotypic variability of angiogenin plasma levels. These findings of our study, including circulating angiogenin reference limits in healthy population and its correlation with angiogenic cytokines, may be of importance in determination of early stages of pathological angiogenesis.
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Affiliation(s)
- Ia Pantsulaia
- Human Population Biology Research Unit, Department of Anatomy and Anthropology, Tel Aviv University, Israel
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15
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Campo L, Turley H, Han C, Pezzella F, Gatter KC, Harris AL, Fox SB. Angiogenin is up-regulated in the nucleus and cytoplasm in human primary breast carcinoma and is associated with markers of hypoxia but not survival. J Pathol 2005; 205:585-91. [PMID: 15776477 DOI: 10.1002/path.1740] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Angiogenin, a 14.2 kD polypeptide that was originally noted for its angiogenic activity, is now increasingly recognized to have a multiplicity of biological roles in both physiological and pathological conditions. In breast cancer, there are conflicting studies questioning the role of angiogenin. Here, the pattern of expression of angiogenin during the transition from normal breast tissue to ductal carcinoma in situ and invasive carcinoma is reported together with the correlates between the level of angiogenin in 239 invasive carcinomas and standard clinicopathological parameters, hypoxia-inducible factor (HIF)-1 alpha and the HIF-1 alpha target gene DEC-1. This study shows that angiogenin expression is up-regulated in the cytoplasmic and nuclear compartments in in situ carcinoma and invasive carcinoma compared with normal breast tissue and that angiogenin expression in invasive carcinomas is significantly positively associated with high tumour grade (p = 0.03), positive oestrogen receptor (ER) status (p = 0.01), HIF-1 alpha (p = 0.001) and DEC 1 (p = 0.001), but not with patient age (p = 0.8), tumour size (p = 0.25), lymph node status (p = 0.69), epidermal growth factor receptor (p = 0.56) or microvessel density (p = 0.32). No difference in relapse-free (p = 0.26) or overall (p = 0.63) survival was observed in patients stratified by angiogenin expression. This study suggests that angiogenin may be important in breast cancer progression and that, through its relationship with ER, it may be a target for tamoxifen.
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MESH Headings
- Biomarkers, Tumor/metabolism
- Breast Neoplasms/blood supply
- Breast Neoplasms/metabolism
- Breast Neoplasms/pathology
- Carcinoma, Ductal, Breast/metabolism
- Carcinoma, Ductal, Breast/pathology
- Carcinoma, Intraductal, Noninfiltrating/blood supply
- Carcinoma, Intraductal, Noninfiltrating/metabolism
- Carcinoma, Intraductal, Noninfiltrating/pathology
- Cell Hypoxia
- Cell Nucleus/metabolism
- Cytoplasm/metabolism
- DNA-Binding Proteins/metabolism
- Disease Progression
- Female
- Humans
- Hypoxia-Inducible Factor 1
- Hypoxia-Inducible Factor 1, alpha Subunit
- Lymphatic Metastasis
- Middle Aged
- Neoplasm Proteins/metabolism
- Neovascularization, Pathologic/metabolism
- Nuclear Proteins/metabolism
- Receptors, Estrogen/metabolism
- Ribonuclease, Pancreatic/metabolism
- Survival Analysis
- Transcription Factors/metabolism
- Up-Regulation
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Affiliation(s)
- Leticia Campo
- Nuffield Department Clinical Laboratory Sciences, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DU, UK
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16
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Koutroubakis IE, Xidakis C, Karmiris K, Sfiridaki A, Kandidaki E, Kouroumalis EA. Serum angiogenin in inflammatory bowel disease. Dig Dis Sci 2004; 49:1758-62. [PMID: 15628698 DOI: 10.1007/s10620-004-9565-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
Angiogenesis-promoting cytokines have been suggested to play an important role in inflammatory bowel disease (IBD) since they promote inflammation by increasing vascular permeability and mediate tissue repair by activating fibroblasts. The aim of the present study was to evaluate the serum levels of angiogenin, a potent angiogenic factor, in patients with ulcerative colitis (UC) and Crohn's disease (CD). Angiogenin serum levels were measured in 154 IBD patients (78 UC and 76 CD), in 18 cases with other causes of intestinal inflammation, and in 84 matched healthy controls using a commercially available enzyme-linked immunosorbent assay. Angiogenin levels were assessed in terms of disease activity, type, localization, and treatment. Mean (+/-SD) serum angiogenin levels were 526.5+/-224.1 ng/ml in UC patients, 508.8+/-228.5 ng/ml in CD patients, 394.6+/-137.6 ng/ml in healthy controls, and 448.1+/-167.8 ng/ml in patients with non-IBD intestinal inflammation. A statistically significant difference among the mean levels of angiogenin in the four groups was found (P = 0.0003). IBD patients with early disease had a significantly lower mean serum angiogenin compared with patients with late disease (P = 0.03). No significant association between angiogenin levels and disease activity, localization, disease type, or treatment was found. Serum angiogenin is elevated in patients with IBD. The increased serum angiogenin suggests that angiogenin may mediate angiogenesis and vascular permeability in the mucosa of patients with IBD.
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Affiliation(s)
- Ioannis E Koutroubakis
- Department of Gastroenterology, University Hospital Heraklion, Heraklion, Crete, Greece.
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17
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Pavlov N, Hatzi E, Bassaglia Y, Frendo JL, Evain-Brion D, Badet J. Angiogenin distribution in human term placenta, and expression by cultured trophoblastic cells. Angiogenesis 2004; 6:317-30. [PMID: 15166501 PMCID: PMC1997312 DOI: 10.1023/b:agen.0000029412.95244.81] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Human angiogenin is a 14-kDa secreted protein with angiogenic and ribonucleolytic activities. Angiogenin is associated with tumour development but is also present in normal biological fluids and tissues. To further address the physiological role of angiogenin, we studied its expression in situ and in vitro, using the human term placenta as a model of physiological angiogenesis. Angiogenin was immunodetected by light and transmission electron microscopy, and its cellular distribution was established by double immunolabelling with cell markers including von Willebrand factor, platelet/endothelial cell adhesion molecule-1 (PECAM-1), CD34, Tie-2, vascular endothelial cadherin (VE-cadherin), vascular endothelial growth factor receptor-2 (VEGF-R2), erythropoeitin receptor (Epo-R), alpha-smooth muscle actin, CD45, cytokeratin 7, and Ki-67. Angiogenin immunoreactivity was detected in villous and extravillous trophoblasts, the trophoblast basement membrane, the endothelial basal lamina, foetal blood vessels, foetal and maternal red blood cells, and amnionic cells. Its expression was confirmed by in situ hybridisation with a digoxygenin-labelled cDNA probe and reverse transcriptase-polymerase chain reaction amplification. Villous cytotrophoblasts, isolated and differentiated in vitro into a functional syncytiotrophoblast, expressed and secreted angiogenin. Given its known biological activities in vitro and its observed pattern of expression, these data suggest that, in human placenta, angiogenin has a role not only in angiogenesis but also in vascular and tissue homeostasis, maternal immune tolerance of the foetus, and host defences.
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Affiliation(s)
- Nadine Pavlov
- Développement humain : Croissance et différenciation
INSERM : U427 IFR71Université René Descartes - Paris VFaculté Sc Pharmaceutiques et biologiques
4, avenue de l'observatoire
75270 PARIS CEDEX 06,FR
| | | | - Yann Bassaglia
- Laboratoire de recherche sur la croissance cellulaire, la réparation et la régénération tissulaires
CNRS : FRE2412Université Paris XII Val de MarneFaculté des sciences
61 Av du général de Gaulle
94000 CRETEIL,FR
| | - Jean-Louis Frendo
- Développement humain : Croissance et différenciation
INSERM : U427 IFR71Université René Descartes - Paris VFaculté Sc Pharmaceutiques et biologiques
4, avenue de l'observatoire
75270 PARIS CEDEX 06,FR
| | - Danièle Evain-Brion
- Développement humain : Croissance et différenciation
INSERM : U427 IFR71Université René Descartes - Paris VFaculté Sc Pharmaceutiques et biologiques
4, avenue de l'observatoire
75270 PARIS CEDEX 06,FR
| | - Josette Badet
- Développement humain : Croissance et différenciation
INSERM : U427 IFR71Université René Descartes - Paris VFaculté Sc Pharmaceutiques et biologiques
4, avenue de l'observatoire
75270 PARIS CEDEX 06,FR
- * Correspondence should be adressed to: Josette Badet
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18
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Dvorakova K, Payne CM, Ramsey L, Holubec H, Sampliner R, Dominguez J, Dvorak B, Bernstein H, Bernstein C, Prasad A, Fass R, Cui H, Garewal H. Increased Expression and Secretion of Interleukin-6 in Patients with Barrett’s Esophagus. Clin Cancer Res 2004; 10:2020-8. [PMID: 15041721 DOI: 10.1158/1078-0432.ccr-0437-03] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Purpose: Barrett’s esophagus (BE) is a common premalignant lesion of the distal part of the esophagus that arises as a consequence of chronic duodenogastroesophageal reflux. Interleukin (IL)-6 is a pleiotropic cytokine that regulates immune defense mechanisms and hematopoiesis. In addition, IL-6 may also be involved in malignant transformation and tumor progression. IL-6 has been shown to inhibit apoptosis. The major aim of this study was to evaluate expression of IL-6 in BE at the protein and mRNA levels. In addition, we tested whether proteins that are associated with IL-6 signaling, phosphorylated signal transducer and activator of transcription 3 and two antiapoptotic proteins, Bcl-xL and Mcl-1, are also expressed in the same tissues.
Experimental Design: Biopsies of duodenum, BE, and squamous epithelium were evaluated by using a human cytokine protein array, ELISA, real-time PCR, and immunohistochemistry.
Results: Increased IL-6 levels were found to be secreted from BE tissue compared with duodenum or squamous epithelium from sites adjacent or 5 cm away from the BE lesion. IL-6 mRNA was also elevated in BE compared with duodenum or squamous epithelium in five of seven patients. Immunohistochemical studies confirmed IL-6 expression in intestinal glandular epithelium in BE tissue. Activated signal transducer and activator of transcription 3, Mcl-1, and Bcl-xL are present at higher levels in BE glands, with lower levels being found in duodenum or squamous epithelium
Conclusions: These data, taken together, suggest that elevated IL-6 levels in BE may contribute to the development of apoptosis resistance, thereby placing this epithelium at higher risk of developing malignancy.
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Affiliation(s)
- Katerina Dvorakova
- Department of Microbiology and Immunology, Arizona Cancer Center, The University of Arizona, Tucson, Arizona 85723, USA
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19
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Janssen U, Eitner F, Kunter U, Ostendorf T, Wolf G, Chaponnier C, Gabbiani G, Kerjaschki D, Floege J. Extracellular actin impairs glomerular capillary repair in experimental mesangioproliferative glomerulonephritis. NEPHRON. EXPERIMENTAL NEPHROLOGY 2003; 93:e158-67. [PMID: 12759577 DOI: 10.1159/000070240] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2002] [Accepted: 12/04/2002] [Indexed: 11/19/2022]
Abstract
Exogenous administration of actin prevents tumour growth in mice by specifically antagonizing angiogenin, a potent inducer of neovascularization. To investigate whether the angiogenin/actin system is also of importance in renal disease, we examined the effect of actin during glomerular capillary repair in anti-Thy-1.1 mesangioproliferative glomerulonephritis. Male Wistar rats were injected intravenously with actin, a control protein, i.e. albumin, or vehicle alone at 8, 16, 24, 32, 40 and 48 h after disease induction. On day 8, actin-treated rats showed significantly more microaneurysms and persistent mesangiolysis as compared to both control groups. This was associated with increased proteinuria in actin-treated rats. Moreover, actin-treated rats showed increased counts of glomerular macrophages (+40%) and polymorphonuclear leukocytes (+100%) on day 3 as well as a decrease in glomerular endothelial area on days 3 and 8. However, no difference in early glomerular endothelial as well as non-endothelial cell proliferation was noted in actin-treated rats as compared to controls. Actin treatment had no apparent influence on mesangial cell activation (i.e. de novo expression of alpha-smooth muscle actin) or glomerular accumulation of fibronectin or type IV collagen. Additional in vitro studies demonstrated that extracellular actin inhibits the angiogenin but not VEGF(165)-induced proliferation of (glomerular) endothelial cells. Moreover, actin inhibited other, yet unidentified, serum-derived angiogenic factors. In conclusion, exogenous actin impairs glomerular capillary repair in experimental mesangioproliferative glomerulonephritis possibly due to interference with angiogenic factors such as angiogenin. Our combined in vivo and in vitro observations suggest that the release of intracellular actin during mesangiolysis is an endogenous pathway by which glomerular capillary damage is augmented.
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Affiliation(s)
- Ulf Janssen
- Division of Nephrology, Universitie of Aachen, Germany
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20
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Lioté F, Champy R, Moenner M, Boval-Boizard B, Badet J. Elevated angiogenin levels in synovial fluid from patients with inflammatory arthritis and secretion of angiogenin by cultured synovial fibroblasts. Clin Exp Immunol 2003; 132:163-8. [PMID: 12653852 PMCID: PMC1808677 DOI: 10.1046/j.1365-2249.2003.02117.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Angiogenesis is a key process in the pathogenesis of inflammatory arthritis. Angiogenin is one of the most potent inducers of neovascularization in experimental models in vivo. To look for evidence that angiogenin is involved in inflammatory joint disease, we examined plasma and synovial fluid (SF) samples from rheumatology patients and synovial fibroblast cell culture supernatants. Angiogenin levels were determined by radioimmunoassay and ELISA. Plasma angiogenin concentrations ranged from 96 to 478 ng/ml, with no significant difference between patients and normal controls. In SF, angiogenin concentrations were significantly higher in patients with acute or chronic synovitis (rheumatoid arthritis (RA): median, 104 ng/ml; range 13-748, n = 14; crystal-induced arthritis (CIA): median, 149 ng/ml; range, 37-616, n = 14, and other chronic inflammatory arthritis: median, 42 ng/ml; range, 15-205; n = 9) than in the 18 patients with osteoarthritis (OA) (median, 20 ng/ml; range 8-116) (P < 0.0001, anova). Angiogenin levels in SF from RA patients in remission with secondary OA were similar to those achieved in primary OA, and decreased in parallel with the resolution of acute gout. Angiogenin protein was released by cultured synovial fibroblasts from OA and RA patients, and reached 1.18 ng/106 cells/day. These data suggest that angiogenin may mediate local inflammation in arthritis via effects on angiogenesis and leucocyte regulation.
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MESH Headings
- Analysis of Variance
- Arthritis/metabolism
- Arthritis/pathology
- Arthritis, Infectious/metabolism
- Arthritis, Infectious/pathology
- Arthritis, Psoriatic/metabolism
- Arthritis, Psoriatic/pathology
- Arthritis, Rheumatoid/metabolism
- Arthritis, Rheumatoid/pathology
- Case-Control Studies
- Cells, Cultured
- Culture Media, Conditioned/chemistry
- Fibroblasts/metabolism
- Humans
- Leukocytes, Mononuclear/chemistry
- Leukocytes, Mononuclear/metabolism
- Osteoarthritis/metabolism
- Osteoarthritis/pathology
- Ribonuclease, Pancreatic/analysis
- Ribonuclease, Pancreatic/blood
- Ribonuclease, Pancreatic/genetics
- Statistics, Nonparametric
- Synovial Fluid/chemistry
- Synovial Fluid/cytology
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Affiliation(s)
- F Lioté
- Centre Viggo Petersen, Hôpital Lariboisière, Paris, France.
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21
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Glenjen N, Mosevoll KA, Bruserud Ø. Serum levels of angiogenin, basic fibroblast growth factor and endostatin in patients receiving intensive chemotherapy for acute myelogenous leukemia. Int J Cancer 2002; 101:86-94. [PMID: 12209593 DOI: 10.1002/ijc.10566] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Angiogenesis seems to be important both in the pathogenesis of acute myelogenous leukemia (AML) and for the susceptibility of AML blasts to chemotherapy. Recent clinical studies even suggest that antiangiogenic therapy can induce disease control in patients with AML relapse. In this context we have investigated the profile of the systemic component of angiogenic regulation in AML by characterizing the serum levels of (i) the angiogenic regulators angiogenin, basic fibroblast growth factor (bFGF) and endostatin; (ii) the endothelial cell marker soluble (s) E-selectin. Patients with untreated AML had increased levels of angiogenin, endostatin and sE-selectin, whereas the levels of bFGF were not significantly altered. The systemic levels of the proangiogenic bFGF, the antiangiogenic endostatin and the endothelial cell marker sE-selectin showed significant correlations, whereas angiogenin and sE-selectin levels were not correlated. Furthermore, intensive chemotherapy resulted in decreased systemic levels of the 2 proangiogenic mediators angiogenin and bFGF, whereas endostatin levels remained high after treatment. Although angiogenin normally is a part of the acute phase reaction, its systemic levels were not altered when patients with chemotherapy-induced cytopenia developed complicating bacterial infections. Our results suggest that intensive chemotherapy can modulate the systemic component of angiogenic regulation in AML patients.
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Affiliation(s)
- Nils Glenjen
- Section for Hematology, Department of Medicine, Haukeland University Hospital and the University of Bergen, Norway.
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22
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Affiliation(s)
- J F Riordan
- Center for Biochemical and Biophysical Sciences and Medicine, Harvard Medical School, Boston, Massachusetts 02115, USA
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23
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Yoon BH, Oh SY, Romero R, Shim SS, Han SY, Park JS, Jun JK. An elevated amniotic fluid matrix metalloproteinase-8 level at the time of mid-trimester genetic amniocentesis is a risk factor for spontaneous preterm delivery. Am J Obstet Gynecol 2001; 185:1162-7. [PMID: 11717651 DOI: 10.1067/mob.2001.117678] [Citation(s) in RCA: 114] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Strong evidence implicates chronic intra-amniotic inflammation in the etiology of mid-trimester abortion and spontaneous preterm delivery. The purpose of this study was to determine if concentrations of amniotic fluid matrix metalloproteinase-8, and cytokines such as interleukin-6 and angiogenin can identify patients at risk for spontaneous preterm delivery in patients undergoing mid-trimester amniocentesis. STUDY DESIGN A case-control study was conducted to compare mid-trimester concentrations of amniotic fluid matrix metalloproteinase-8, interleukin-6, and angiogenin in patients who delivered at term and in those who delivered before term. The study included 19 cases with spontaneous preterm delivery and 95 matched controls with normal outcomes. Patients with abnormal fetal karyotypes or major anomalies were excluded. Matrix metalloproteinase-8, interleukin-6, and angiogenin were measured by using specific immunoassays. Mann-Whitney U tests, Fisher exact tests, and receiver-operating characteristic curves were used for statistical analysis. RESULTS The median amniotic fluid matrix metalloproteinase-8, interleukin-6, and angiogenin concentrations of patients with spontaneous preterm delivery were significantly higher than those of control cases (matrix metalloproteinase-8: median, 3.1 ng/mL [range, 0.3-1954.9 ng/mL] vs median, 1.3 ng/mL [range, <0.3-45.2 ng/mL], P <.01; interleukin-6: median, 0.32 ng/mL [range, 0.04-2.52 ng/mL] vs median, 0.18 ng/mL [range, 0.01-1.81 ng/mL], P <.01; angiogenin: median, 11.1 ng/mL [range, 4.5-30.7 ng/mL] vs median, 6.7 ng/mL [range, 1.3-21.9 ng/mL], P <.001). Amniotic fluid matrix metalloproteinase-8 concentrations higher than 23 ng/mL had the highest specificity and odds ratio (sensitivity, 42% [8/19]; specificity, 99% [94/95]; OR, 68.4 [95% CI, 7.8-599.1]) in the identification of the patients with preterm delivery after genetic amniocentesis. CONCLUSIONS Elevated mid-trimester concentrations of amniotic fluid matrix metalloproteinase-8, interleukin-6, and angiogenin are a risk factor for early spontaneous preterm delivery (<32 weeks). An elevated matrix metalloproteinase-8 level of >23 ng/mL is a powerful predictor of spontaneous preterm delivery (<32 weeks) with an odds ratio of 68.4. Amniotic fluid studies can be used to improve the risk assessment for preterm delivery in women who undergo mid-trimester amniocentesis for genetic indications.
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Affiliation(s)
- B H Yoon
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Korea
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Fernández-Celemín L, Thissen JP. Interleukin-6 stimulates hepatic insulin-like growth factor binding protein-4 messenger ribonucleic acid and protein. Endocrinology 2001; 142:241-8. [PMID: 11145587 DOI: 10.1210/endo.142.1.7903] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Sepsis and bacterial lipopolysaccharide (LPS) injection decrease circulating concentrations of insulin-like growth factor (IGF)-I and induce an increase in IGFBP-1 and IGFBP-4 that may have impact upon IGF-I anabolic actions. Although the mechanisms responsible for the IGFBP-1 increase in response to LPS have already been unraveled, the cause for the IGFBP-4 elevation is still unknown. The aim of this study was to characterize the regulation of IGFBP-4 by proinflammatory cytokines and glucocorticoids. In rat primary cultured hepatocytes, interleukin (IL)-6 strongly stimulated IGFBP-4 messenger RNA (mRNA) and protein levels in a dose- and time-dependent way (mRNA levels: 9-fold, P: < 0.01 and protein levels: approximately 3-fold at 24 h, with IL-6 10 ng/ml). Interleukin (IL)-1ss and tumor necrosis factor (TNF)-alpha blunted the IL-6 stimulation of IGFBP-4 mRNA (66% and 46% decrease, respectively) and protein levels (82% and 68% decrease, respectively). In contrast, dexamethasone induced IGFBP-4 mRNA and protein and potentiated the effect of IL-6 on IGFBP-4 mRNA (2.5-fold, P: < 0.01 vs. IL-6 alone). Both actinomycin and cycloheximide prevented the IL-6 induction of IGFBP-4 mRNA suggesting that the IL-6 effect on IGFBP-4 gene occurs probably at the transcriptional level and needs an ongoing protein synthesis. Administration of IL-6 to rats caused a 3-fold increase in liver IGFBP-4 mRNA (P: < 0.001) reflected in serum levels of IGFBP-4 (P: < 0.05). In conclusion, our results show that IL-6 stimulates hepatic IGFBP-4 gene expression and production in vitro and in vivo, thereby suggesting another mechanism by which cytokines could control IGF-I action.
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Affiliation(s)
- L Fernández-Celemín
- Unité de Diabétologie et Nutrition, Université Catholique de Louvain, 54 B-1200 Brussels, Belgium
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