Abstracts tagged "Fibroblasts"

Abstract Number: 2816 • 2014 ACR/ARHP Annual Meeting
Distinctive DNA Methylome Signatures in Early Rheumatoid Arthritis (RA) Synoviocytes Compared with Longstanding (RA) and Other Inflammatory Arthritides
Rizi Ai¹, John W. Whitaker², David L. Boyle³, Paul Peter Tak⁴, Danielle M. Gerlag⁵, Wei Wang⁶ and Gary S. Firestein³, ¹Chemistry, UC San Diego, La Jolla, CA, ²860 island ave, UCSD, San Diego, CA, ³Division of Rheumatology, Allergy and Immunology, University of California at San Diego School of Medicine, La Jolla, CA, ⁴Academic Medical Center / University of Amsterdam, Department of Clinical Immunology and Rheumatology & GlaxoSmithKline, Amsterdam, Netherlands, ⁵Division of Clinical Immunology and Rheumatology, Academic Medical Center/University of Amsterdam, Amsterdam, Netherlands, ⁶Chemistry, UCSD, La Jolla, CA
Background/Purpose: Epigenetics influences pathogenic mechanisms in autoimmunity. Recently, a stable RA DNA methylation signature in fibroblast-like synoviocytes (FLS) was defined in 2375 genes. The…
Abstract Number: 1038 • 2014 ACR/ARHP Annual Meeting
Macrophage-Fibroblast Crosstalk Pathways Amplify RA Joint Pathology
Laura T. Donlin¹, Jennifer Ding¹ and Lionel B. Ivashkiv^1,2, ¹Arthritis and Tissue Degeneration Program and the David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, ²Weill Cornell Graduate School of Medical Sciences, New York, NY
Background/Purpose Macrophages and synovial fibroblasts represent key cellular drivers of RA. The goal of this study was to define how the complex cellular programs of…
Abstract Number: 2817 • 2014 ACR/ARHP Annual Meeting
Histone Deacetylase One Contributes to the Auto-Aggressive Phenotype of Rheumatoid Arthritis
Sarah Hawtree¹, Munitta Muthana¹, J. Mark Wilkinson², Anthony G. Wilson¹ and Mohammed Akil³, ¹Infection and Immunity, University of Sheffield, Sheffield, United Kingdom, ²Academic Unit of Bone Metabolism, University of Sheffield, Sheffield, United Kingdom, ³Rheumatology Department, Sheffield South Yorkshire, United Kingdom
Background/Purpose Rheumatoid arthritis (RA) is a chronic, autoimmune, inflammatory disease that affects synovial joints. A key characteristic of RA is hyperplasia of fibroblast-like synoviocytes (FLS)…
Abstract Number: 1022 • 2014 ACR/ARHP Annual Meeting
Fibroblast-like Synovial Cells and Monocytes Team up in the Organization and the Dynamic Modelling of the Synovial Tissue
Ruth Byrne¹, Karolina von Dalwigk², Thomas Karonitsch¹, Gunter Steiner³, Johannes Holinka⁴, Reinhard Windhager⁴, Josef Smolen⁵, Hans Peter Kiener¹ and Clemens Scheinecker⁶, ¹Division of Rheumatology, Medical University of Vienna, Vienna, Austria, ²Department of Medicine III, Division of Rheumatology, Medical University of Vienna, Vienna, Austria, ³Internal Medicine III, Division of Rheumatology, Medical University of Vienna, Vienna, Austria, ⁴Department of Orthopaedics, Medical University of Vienna, Vienna, Austria, ⁵Department of Internal Medicine III, Division of Rheumatology, Medical University of Vienna, Vienna, Austria, ⁶Divison of Rheumatology, Medical University of Vienna, Vienna, Austria
Background/Purpose The synovial lining tissue consists of fibroblast-like synoviocytes (FLS) and monocyte-derived macrophage-like synoviocytes (MLS) within a self-built meshwork of dense extracellular matrix (ECM) components.…
Abstract Number: 2818 • 2014 ACR/ARHP Annual Meeting
SH2 Domain-Containing Phosphatase 2 Promotes Aggressiveness of Rheumatoid Fibroblast-like Synoviocytes
Stephanie M. Stanford¹, German R. Aleman Muench¹, Cristiano Sacchetti¹, Lifan Zeng², David L. Boyle³, Gen-Sheng Feng⁴, Zhong-Yin Zhang², Maripat Corr³, Gary S. Firestein³ and Nunzio Bottini¹, ¹Cellular Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, ²Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, ³Division of Rheumatology, Allergy and Immunology, University of California at San Diego School of Medicine, La Jolla, CA, ⁴Pathology, University of California at San Diego Division of Biological Sciences, La Jolla, CA
Background/Purpose In rheumatoid arthritis (RA), fibroblast-like synoviocytes (FLS) that line joint synovial membranes aggressively invade the extracellular matrix, destroying cartilage and bone. Although this cell…
Abstract Number: 994 • 2014 ACR/ARHP Annual Meeting
IL-7 Modulates B Cell Immunoglobulin Isotype Production and Increases B Cell Activating Factor of the Tumor Necrosis Factor Family (BAFF) in Synovial Fibroblasts from Osteoarthritis (OA) and Rheumatoid Arthritis (RA) Patients
Georg Pongratz¹, Stephan Kuhn², Madlen Melzer², Torsten Lowin² and Rainer Straub³, ¹Internal Medicine I, University Hospital Regensburg, Regensburg, Germany, ²University Hospital Regensburg, Regensburg, Germany, ³Internal Medicine, University Hospital Regensburg, Regensburg, Germany
Background/Purpose Interleukin(IL)-7 is increased in synovial fluid from rheumatoid arthritis (RA) patients as compared to osteoarthritis (OA) patients and has been attributed a proinflammatory role,…
Abstract Number: 2785 • 2014 ACR/ARHP Annual Meeting
Joint Specific Positional Differences in Coding and Noncoding Transcriptome of Synovial Fibroblasts As a Determinant of the Susceptibility of Synovial Joints to Rheumatoid Arthritis
Caroline Ospelt¹, Maria Armaka², Giancarlo Russo³, Anna Bratus³, Michelle Trenkmann⁴, Emmanuel Karouzakis¹, Christoph Kolling⁵, Renate E. Gay⁴, George Kollias⁶, Steffen Gay¹ and Mojca Frank Bertoncelj¹, ¹Center of Experimental Rheumatology, University Hospital Zurich, Zurich, Switzerland, ²Institute of Immunology,, Biomedical Sciences Research Center 'Alexander Fleming', Vari, Greece, ³Functional Genomics Center Zurich, ETH Zurich and University of Zurich, Zurich, Switzerland, ⁴Center of Experimental Rheumatology, Zurich University Hospital, Zurich, Switzerland, ⁵Schulthess Clinic, Zurich, Switzerland, ⁶Institute of Immunology, Biomedical Sciences Research Center 'Alexander Fleming', Vari, Greece
Background/Purpose The molecular mechanisms underlying the topographic differences in the susceptibility of synovial joints to develop rheumatoid arthritis (RA) are unknown. Positional embryonic expression of…
Abstract Number: 968 • 2014 ACR/ARHP Annual Meeting
Priming of WNT Signalling during Fibrosis Is Mediated By TGF-β Induced Axin-2 Downregulation
Justin Gillespie¹, Emma C. Derrett-Smith², Michael McDermott¹, Paul Emery³, Christopher P Denton⁴ and Francesco Del Galdo³, ¹Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, United Kingdom, ²Centre for Rheumatology and Connective Tissue Diseases,, UCL Medical School Royal Free Campus, London, United Kingdom, ³Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds and NIHR Leeds Musculoskeletal Biomedical Research Unit, Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom, ⁴Centre for Rheumatology and Connective Tissue Disease, UCL Medical School Royal Free Campus, London, United Kingdom

Background/Purpose Systemic Sclerosis (SSc) is characterized by autoimmune activation, vasculopathy and tissue fibrosis. Recently, activation of the Wnt/β-catenin signaling pathway in SSc fibroblasts has been…
Abstract Number: 2709 • 2014 ACR/ARHP Annual Meeting
Could a Fibroblast-Free Environment Protect the Microcirculation in Systemic Sclerosis? Evidence from Retinal Vascular Imaging Research
Evaggelia K. Aissopou¹, Vasiliki-Kalliopi Bournia¹, Athanase D. Protogerou¹, Stylianos Panopoulos¹, Theodore G. Papaioannou², Panayiotis G. Vlachoyiannopoulos¹, Marco Matucci-Cerinic³ and Petros P. Sfikakis¹, ¹First Department of Propedeutic Internal Medicine, Laikon Hospital, Athens University Medical School, Athens, Greece, ²Biomedical Engineering Unit, First University Dept. of Cardiology, Hippokration Hospital , Athens University Medical School, Athens, Greece, ³Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
Background/Purpose: A primary endothelial cell dysfunction is thought to be involved in systemic sclerosis (SSc)-associated fibroproliferative vasculopathy of the microcirculation and small arterioles, even in…
Abstract Number: 935 • 2014 ACR/ARHP Annual Meeting
Targeting Glycolysis in Rheumatoid Arthritis
Monica Guma¹, Alessia Lodi², Ajit Divakaruni³, Anne Murphy³, Stefano Tiziani⁴ and Gary S. Firestein⁵, ¹Division of Rheumatology, Allergy and Immunology, University of California, San Diego, La Jolla, CA, ²nutritional Sciences, University of Texas at Austin, Austin, TX, ³Pharmacology, University of California, San Diego, La Jolla, CA, ⁴Nutritional Sciences, University of Texas at Austin, Austin, TX, ⁵Division of Rheumatology, Allergy and Immunology, University of California at San Diego School of Medicine, La Jolla, CA
Background/Purpose: Many of the signaling pathways activated in inflammation have a profound effect on cell metabolism. However, little is known about metabolome in rheumatoid arthritis…
Abstract Number: 2455 • 2014 ACR/ARHP Annual Meeting
IL-6 Proximal Promoter SNP rs18000795 Genotype Strongly Correlates with Synovial Fibroblast IL-6 Expression
Erika Noss¹, Sook Kyung Chang², Gerald Watts² and Michael Brenner², ¹Divison of Rheumatology, Immunology, and Allergy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, ²Division of Rheumatology, Immunology, and Allergy, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
Background/Purpose Interleukin (IL)-6 is an important driver of rheumatoid arthritis (RA) pathology, and synovial fibroblasts are a major source of IL-6 in the RA synovium. …
Abstract Number: 877 • 2014 ACR/ARHP Annual Meeting
Sildenafil Attenuates the Fibrotic Phenotype in Scleroderma Skin Fibroblasts
Tomoaki Higuchi¹, Yasushi Kawaguchi¹, Kae Takagi¹, Akiko Tochimoto¹, Yuko Ota², Yasuhiro Katsumata¹, Takahisa Gono¹, Masanori Hanaoka¹, Yuko Okamoto¹, Hidenaga Kawasumi¹ and Hisashi Yamanaka³, ¹Institute of Rheumatology, Tokyo Women's Medical University, Tokyo, Japan, ²10-22 Kawada-Cha Shinjuku-Ku, Tokyo Women's Medical University, Tokyo, Japan, ³Institute of Rheumatology, Tokyo Women’s Medical University, Tokyo, Japan
Background/Purpose Systemic sclerosis (SSc) is a connective tissue disease characterized by inflammation, vasculopathy and fibrosis. Tissue fibrosis directly contributes to mortality or quality of life.…
Abstract Number: 2464 • 2014 ACR/ARHP Annual Meeting
Anti-Arthritic Effect of Tubastatin A, a Novel Histone Deacetylases-6 Inhibitor, Is Mediated By Stabilization of IkB Via Suppression of Ubiquitin-Proteasome Pathway
Eun Chung Hong¹, Hemin Jeong², Jiwon Hwang², Eun-Kyung Bae¹, Hyungjin Kim², Joong Kyong Ahn³, Hoon-Suk Cha², Eun-mi Koh⁴ and Jaejoon Lee⁴, ¹Samsung Biomedical Research Institute, Seoul, South Korea, ²Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea, ³Sungkyunkwan univ. school of medicine, Seoul, South Korea, ⁴Division of Rheumatology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
Background/Purpose: Histone deacetylase-6 (HDAC-6) functions as a non-epigenetic deacetylase for non-histone substrates and regulates microtubule-mediates processes such as cell migration, cell cycle arrest, and angiogenesis.…
Abstract Number: 774 • 2014 ACR/ARHP Annual Meeting
Endothelin-1 Synergistically Increases TGF-β-Induced Hif1α Expression Under Normoxic Conditions during Endothelial-to-Mesenchymal Transition in Murine Endothelial Cells. a Novel Mechanism for the Fibrogenic Effects of Endothelin
Peter J. Wermuth and Sergio A. Jimenez, Jefferson Institute of Molecular Medicine, Division of Connective Tissue Diseases and Scleroderma Center,Thomas Jefferson University, Philadelphia, PA
Background/Purpose: Tissue hypoxia is a consequence of vascular damage and Hif-1α accumulation is a major mechanism of hypoxia response pathways. HIF-1α induces the transcriptional upregulation…
Abstract Number: 1969 • 2014 ACR/ARHP Annual Meeting
Neurotrophin Receptor p75 (CD271) Defines a Distinct Synovial Fibroblast Subset in Rheumatoid and Osteoarthritic Synovial Tissues with Enhanced Proinflammatory Potential
Manuel J. Del Rey¹, Regina Faré¹, Gabriel Criado², Alicia Usategui¹, Vanessa Miranda¹, Juan D. Cañete³ and Jose L. Pablos¹, ¹Servicio de Reumatología, Instituto de Investigación Hospital 12 de Octubre (I+12), Madrid, Spain, ²Grupo de Enfermedades Inflamatorias y Autoinmunes, Instituto de Investigación Hospital 12 de Octubre (I+12), Madrid, Spain, ³Arthritis Unit. Rheumatology Department, Hospital Clínic of Barcelona, Barcelona, Spain
Background/Purpose Synovial mesenchynmal or stromal cells constitute a heterogeneous cell population difficult to characterize ex vivo due to a paucity of cell markers and are…

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