Abstracts tagged "Epigenetics"

Abstract Number: 1239 • 2015 ACR/ARHP Annual Meeting
Significant Impact of Microrna-Target Gene Networks on the Genetics of Rheumatoid Arthritis
Yukinori Okada^1,2 and Toshihiro Tanaka^3,4, ¹Department of Human Genetics and Disease Diversity, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan, ²Laboratory for Statistical Analysis, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan, ³Bioresource Research Center, Department of Human Genetics and Disease Diversity, Tokyo Medical and Dental University, Tokyo, Japan, ⁴Laboratory for Cardiovascular Diseases, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
Background/Purpose: MicroRNA (miRNA), a short endogenous noncoding RNA, has a major role in the degradation and translational repression of a specific gene through its binding…
Abstract Number: 1242 • 2015 ACR/ARHP Annual Meeting
Germ Line DNA Methylation Profiling Provides Novel Insights into the Parent-of-Origin Effect in Psoriatic Disease
Remy Pollock¹, Darren O'Reilly², Proton Rahman³, Vinod Chandran⁴ and Dafna Gladman⁴, ¹University of Toronto, Toronto Western Hospital, Toronto, ON, Canada, ²Memorial University of Newfoundland, St. John's, NF, Canada, ³Computer Sciences, Memorial University of Newfoundland, St. John's, NF, Canada, ⁴Rheumatology, University of Toronto, Toronto Western Hospital, Toronto, ON, Canada
Background/Purpose: Parent-of-origin effects refer to the differential risk or pathogenicity of a disease that depends on the sex of the disease-transmitting parent. Excessive paternal transmission…
Abstract Number: 1250 • 2015 ACR/ARHP Annual Meeting
DNA Methylation and Its Relation to Immunological Phenotypes in Peripheral Blood: A Study of Anti-CCP Antibody Positivity from a Population-Based Pool
Sasha Bernatsky¹, Xiaojian Shao², Marie-Michelle Simon², Marvin J. Fritzler³, Philip Awadalla^4,5, Marie Hudson⁶, Ines Colmegna⁷, Tony Kwan² and Tomi Pastinen², ¹Divisions of Rheumatology and Clinical Epidemiology, McGill University Health Centre, Montreal, QC, Canada, ²Department of Human Genetics, McGill University and Génome Québec Innovation Centre, Montreal, QC, Canada, ³Medicine, University of Calgary, Calgary, AB, Canada, ⁴Medicine, Université de Montreal, Montreal, QC, Canada, ⁵Ontario Institute for Cancer Research, Toronto, ON, Canada, ⁶McGill University, Jewish General Hospital, Montreal, QC, Canada, ⁷Rheumatology, McGill University Health Centre, Montreal, QC, Canada
Background/Purpose: DNA methylation represents an important potential mediator of environmental influences on autoimmunity, including rheumatoid arthritis (RA). Genome-wide methylation in the context of clinical phenotypes…
Abstract Number: 1255 • 2015 ACR/ARHP Annual Meeting
Genome-Wide DNA Methylation Patterns in CD4+ T Reveal Significant Contribution of DNA Methylation to Rheumatoid Arthritis
Shicheng Guo^1,2, Ting Jiang^1,2, Rongsheng Wang^1,2, Yi Shen^1,2, Xiao Zhu³, Fengmin Bai^1,2, Qin Ding^1,2, Guangjie Chen⁴ and Dongyi He^1,2, ¹Department of Rheumatology, Shanghai Guanghua Hospital of Integrated Traditional and Western Medicine, Shanghai, China, ²Arthritis Institute of integrated Traditional and Western medicine, Shanghai Chinese Medicine Research Institute, Shanghai, China, ³Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Guangzhou, China, ⁴Department of Immunology and Microbiology, Shanghai JiaoTong University School of Medicine, Shanghai, China
Background/Purpose: Rheumatoid arthritis (RA) is an autoimmune disease that causes chronic inflammation of the joints. Recent evidence showed more and more importance of the epigenetic…
Abstract Number: 1624 • 2015 ACR/ARHP Annual Meeting
Epigenetic Profiling of CD14+ and CD16+ Monocyte Subtypes in Rheumatoid Arthritis. Alterations Related to Cardiovascular Disease and Endothelial Dysfunction
Nuria Barbarroja^1,2, Patricia Ruiz-Limon¹, Carlos Perez-Sanchez¹, Yolanda Jiménez Gómez¹, MariCarmen Abalos-Aguilera¹, Pedro Segui³, Pilar Font¹, Ángeles Aguirre Zamorano¹, Jerusalem Calvo-Gutierrez¹, Rafaela Ortega¹, M. Carmen Castro Villegas¹, Eduardo Collantes-Estévez¹, Alejandro Escudero-Contreras¹ and Chary Lopez-Pedrera¹, ¹IMIBIC-Reina Sofia University Hospital, Rheumatology Unit, Cordoba, Spain, ²Rheumatology Unit, IMIBIC-Reina Sofia University Hospital, Cordoba, Spain, ³IMIBIC-Reina Sofia University Hospital, Radiology Unit, Cordoba, Spain
Background/Purpose: Monocytes play a key role in the pathogenesis of the cardiovascular disease (CVD). Three monocyte subsets have been described based on their CD14 and…
Abstract Number: 1950 • 2015 ACR/ARHP Annual Meeting
Methylation-Dependent Interference of Two Promoters for the Treg-Specific Protein, Garp, Contributes to Altered Treg Function in Rheumatoid Arthritis
Viktoria Soentgerath¹, Sonja Haupt², Jan Leipe³, Hendrik Schulze-Koops¹ and Alla Skapenko¹, ¹Division of Rheumatology and Clinical Immunology, University of Munich, Munich, Germany, ²Division of Rheumatology and Clinical Immunology, Med.Klinik und Poliklinik IV, University of Munich, Munich, Germany, ³Division of Rheumatology, University of Munich, Munich, Germany
Background/Purpose: Recently, genome-wide studies identified several Treg-specific genes containing hypomethylated regions that are critical for their expression, so called Treg-specific demethylated regions (TSDR). For example,…
Abstract Number: 2573 • 2015 ACR/ARHP Annual Meeting
Confirmatory Analysis of Methylome Signatures in Rheumatoid Arthritis Using an Independent Dataset
Rizi Ai¹, Deepa Hammaker², Wei Wang³ and Gary S. Firestein⁴, ¹University of California San Diego, La Jolla, CA, ²Division of Rheumatology, Allergy and Immunology, UCSD School of Medicine, La Jolla, CA, ³Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, ⁴Div of Rheumatology, UCSD School of Medicine, La Jolla, CA
Background/Purpose: Epigenetics can contribute to the pathogenesis of rheumatoid arthritis (RA). A DNA methylation signature that distinguishes RA fibroblast-like synoviocytes (FLS) from osteoarthritis (OA) FLS…
Abstract Number: 2994 • 2015 ACR/ARHP Annual Meeting
The Global Microrna Profile of Systemic Sclerosis Whole Skin/Dermal Fibroblasts and the Role of the Xq26.3 miRNA Cluster As a TGF-b Pathway Positive Feedback Mechanism
Gloria Salazar¹, John Hagan², Minghua Wu³, Xinjian Guo⁴, Xiaodong Zhou⁴, Julio Charles¹, Maureen D Mayes¹ and Shervin Assassi¹, ¹Rheumatology, University of Texas Medical School at Houston, Houston, TX, ²Neurosurgery, University of Texas at Houston, Houston, TX, ³Feinberg School of Medicine, Northwestern University, Chicago, IL, ⁴Internal Medicine, University of Texas Medical School at Houston, Houston, TX
Background/Purpose: MicroRNA (miRNA) are critical gene regulators that frequently play central roles in disease. Here, we report the miRNA expression signatures of systemic sclerosis (SSc)…
Abstract Number: 3006 • 2015 ACR/ARHP Annual Meeting
Cell-Free Circulating DNA in Systemic Sclerosis: Increased Levels and Global Cytosine Hypomethylation
Shadia Nada¹, Omar Oraibi², Farouk Abu Alhana², Nawaf Almeshal², Yongqing Wang², Nezam Altorok³ and Bashar Kahaleh⁴, ¹Internal Medicine, Divison of Rheumatology, The University of Toledo, Toledo, OH, ²The University of Toledo, Toledo, OH, ³Internal Medicine, Division of Rheumatology, The University of Toledo, Toledo, OH, ⁴Medicine/Rheumatology, The University of Toledo, Toledo, OH
Background/Purpose: Systemic sclerosis (SSc) is an autoimmune disease characterized by endothelial dysfunction, vascular injury, and activation of fibroblasts leading to organ fibrosis. The precise etiology…
Abstract Number: 3024 • 2015 ACR/ARHP Annual Meeting
FcÎ³riiia Mediated Signal Cause Epigenetic Changes in Human Naive CD4+ T-Cells
Ye Bi¹, Chen Chen², Terry Moore³ and Anil K. Chauhan⁴, ¹Internal Medicine, Saint Louis University, St. Louis, MO, ²Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, ³Division of Rheumatology and Pediatric Rheumatology, Saint Louis University School of Medicine, St Louis, MO, ⁴Internal Medicine-Rheumatology, Saint Louis University, St Louis, MO
Background/Purpose: Signals that trigger epigenetic changes in CD4+ T-cells are unknown. To examine a role for FcγRIIIa mediated co-signal in causing epigenetic changes in human…
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: 92 • 2014 ACR/ARHP Annual Meeting
Long Noncoding RNA Nron Regulates the Activity of NFAT5 through Ubiquitin-Independent Proteasome Pathway in Rheumatoid Arthritis
Kunihiko Umekita^1,2, Michelle Trenkmann¹, Christoph Kolling³, Akihiko Okayama⁴, Renate Gay¹, Steffen Gay¹ and Mojca Frank Bertoncelj⁵, ¹Center of Experimental Rheumatology, University Hospital Zurich and Zurich Center of Integrative Human Physiology (ZIHP), Zurich, Switzerland, ²Department of Rheumatology, Infectious diseases and Laboratory medicine, University of Miyazaki, Miyazaki, Japan, ³Schulthess Clinic, Zurich, Switzerland, ⁴Department of Rheumatology, Infectious Diseases and Laboratory Medicine, University of Miyazaki, Miyazaki, Japan, ⁵Center of Experimental Rheumatology, University Hospital Zurich, Zurich, Switzerland
Background/Purpose: Long noncoding RNAs (lncRNAs) are increasingly recognized as master regulators of gene expression. The lncRNA NRON, noncoding repressor of nuclear factor of activated T…
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: L8 • 2014 ACR/ARHP Annual Meeting
Differential DNA Methylation Associated with Lupus Nephritis
Renuka Nayak¹, Sharon A. Chung², Joanne Nitiham³ and Lindsey A. Criswell³, ¹Rheumatology, University of California - San Francisco, San Francisco, CA, ²School of Medicine, University of California, San Francisco, Rosalind Russell / Ephraim P. Engleman Rheumatology Research Center, San Francisco, CA, ³Medicine, University of California, San Francisco, Rosalind Russell / Ephraim P. Engleman Rheumatology Research Center, San Francisco, CA
Background/Purpose: Genetic and epigenetic factors contribute to the progression of systemic lupus erythematosus (SLE). We now have technologies that allow us to identify these factors…
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…

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