Abstracts tagged "DNA Methylation"

Abstract Number: 2174 • 2015 ACR/ARHP Annual Meeting
Neutrophils in Primary Antiphospholipid Syndrome Are Characterized By a Prominent Activated Phenotype and Uniquely Remodeled Chromatin Architecture
Patrick Coit, Srilakshmi Yalavarthi, Jason S. Knight and Amr H. Sawalha, Division of Rheumatology, University of Michigan, Ann Arbor, MI
Background/Purpose: Antiphospholipid syndrome (APS) is a systemic autoimmune disease characterized by recurrent thrombotic events, pregnancy complications, and the presence of antiphospholipid antibodies. The pathogenesis of…
Abstract Number: 3104 • 2015 ACR/ARHP Annual Meeting
Abnormal DNA Methylation in a Novel PTPN11 Enhancer Increases Destructive Potential of Rheumatoid Arthritis (RA) Fibroblast-like Synoviocytes (FLS) and Joint Inflammation
Keisuke Maeshima¹, Stephanie M. Stanford², Deepa Hammaker¹, Cristiano Sacchetti², Rizi Ai³, Vida Zhang⁴, David L. Boyle⁵, Lifan Zeng⁶, German Muench⁷, Gen-Sheng Feng⁸, John Whitaker⁹, Zhong-Yin Zhang⁶, Wei Wang¹⁰, Nunzio Bottini² and Gary S. Firestein⁵, ¹Division of Rheumatology, Allergy and Immunology, UCSD School of Medicine, La Jolla, CA, ²Cellular Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, ³Chemistry and Biochemistry, UC San Diego, La Jolla, CA, ⁴Division of Cellular Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, ⁵Division of Rheumatology, Allergy and Immunology, University of California, San Diego, La Jolla, CA, ⁶Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, ⁷La Jolla Institute for Allergy and Immunology, La Jolla, CA, ⁸Pathology and Division of Biological Sciences, UC San Diego, La Jolla, CA, ⁹Janssen Pharmaceuticals, La Jolla, CA, ¹⁰Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA
Background/Purpose: Rheumatoid arthritis (RA) fibroblast-like synoviocytes (FLS) mediate disease pathogenesis by invading the joint extracellular matrix. The PTPN11 gene, encoding the tyrosine phosphatase SHP-2, is overexpressed…
Abstract Number: 95 • 2015 ACR/ARHP Annual Meeting
Validation of Differential Methylation in Paternally Versus Maternally Transmitted Psoriatic Disease
Remy Pollock¹, Darren O'Reilly², Amanda Dohey², Dianne Codner², Vinod Chandran³, Dafna Gladman³ and Proton Rahman⁴, ¹University of Toronto, Toronto Western Hospital, Toronto, ON, Canada, ²Memorial University of Newfoundland, St. John's, NF, Canada, ³Rheumatology, University of Toronto, Toronto Western Hospital, Toronto, ON, Canada, ⁴Computer Sciences, Memorial University of Newfoundland, St. John's, NF, Canada
Background/Purpose: Several studies have demonstrated excessive paternal transmission of psoriasis and psoriatic arthritis (PsA). This phenomenon is thought to be mediated by genomic imprinting. We…
Abstract Number: 3128 • 2015 ACR/ARHP Annual Meeting
Genome-Wide DNA Methylation Analysis in Blood and Dermal Fibroblasts from Twin Pairs Discordant for Systemic Sclerosis
Paula S. Ramos¹, Thomas A. Medsger Jr.² and Carol A. Feghali-Bostwick¹, ¹Medicine, Medical University of South Carolina, Charleston, SC, ²Medicine/Rheumatology, University of Pittsburgh, Pittsburgh, PA
Background/Purpose: The etiology and mechanisms underlying the wide variation in disease heterogeneity and severity in systemic sclerosis (SSc) remain unknown. To assess the role of…
Abstract Number: 1074 • 2015 ACR/ARHP Annual Meeting
DNA Methylation Patterns in Naïve CD4+ T Cells Identify Epigenetic Susceptibility Loci for Malar Rash and Discoid Rash in Systemic Lupus Erythematosus
Paul Renauer¹, Patrick Coit¹, Matlock A. Jeffries², Joan T. Merrill³, W Joseph McCune⁴, Kathleen Maksimowicz-McKinnon⁵ and Amr H. Sawalha⁶, ¹Division of Rheumatology, University of Michigan, Ann Arbor, MI, ²Rheumatology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, ³Oklahoma Medical Research Foundation, Oklahoma City, OK, ⁴Int Med/ Rheum, University of Michigan, Ann Arbor, MI, ⁵Rheumatology, Henry Ford Hospital, Detroit, MI, ⁶Rheumatology, University of Michigan, Ann Arbor, MI
Background/Purpose: Systemic lupus erythematosus (SLE) is a complex autoimmune disease characterized by heterogeneous clinical manifestations, autoantibody production, and epigenetic dysregulation in T cells. We sought…
Abstract Number: 1130 • 2015 ACR/ARHP Annual Meeting
Global DNA Methylation Analysis of Osteoarthritic Subchondral Bone Reveals Significant Regional Variation and Similarity to Overlying Cartilage
Matlock A. Jeffries^1,2, Madison Andrews³, Mary Beth Humphrey¹, Judith A. James⁴ and Amr H. Sawalha⁵, ¹Rheumatology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, ²Arthritis and Clinical Immunology, Oklahoma Medical Research Association, Oklahoma City, OK, ³Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, ⁴Arthritis & Clinical Immunology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, ⁵Univers, Oklahoma City, OK
Background/Purpose: Osteoarthritis (OA) is a leading cause of chronic disability affecting a majority of individuals over age 70. Outside of cartilage, little is known regarding…
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: 2680 • 2014 ACR/ARHP Annual Meeting
DNA Hydroxymethylation Changes in CD4+T Cells from Patients with Systemic Lupus Erythematosus
Ming Zhao, Wei Liao, Bochen Zhu, Ruifang Wu and Qianjin Lu, Department of Dermatology, Second Xiangya Hospital, Central South University, Changsha, China
Background/Purpose Recent studies have uncovered 5-hydroxymethylcytosine (5hmC) as the sixth base of the genome, and that the Ten-eleven translocation (TET) family proteins is responsible for…
Abstract Number: 2447 • 2014 ACR/ARHP Annual Meeting
The Role of TET3-Mediated DNA Demethylation By Pro-Inflammatory Cytokines in Rheumatoid Arthritis
Kazuhisa Nakano¹, Kunihiro Yamaoka¹, Akira Kurozumi², Akio Kawabe², Kaoru Yamagata² and Yoshiya Tanaka³, ¹The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu, Japan, ²The first department of Internal Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu, Japan, ³University of Occupational and Environmental Health, Japan, Kitakyushu, Japan
Background/Purpose In the pathogenesis of Rheumatoid arthritis (RA) RA fibroblast-like synoviocytes (RA FLS) exhibit a unique aggressive phenotype that contributes to the cytokine milieu and…
Abstract Number: 1887 • 2014 ACR/ARHP Annual Meeting
Genome-Wide DNA Methylation Analysis of Twin Pairs Discordant for Systemic Sclerosis Reveals Distinct Signatures in Blood and Dermal Fibroblasts
Paula S. Ramos¹, Rick Jordan², James Lyons-Weiler², Thomas A. Medsger Jr.³ and Carol A. Feghali-Bostwick⁴, ¹Department of Medicine, Medical University of South Carolina, Charleston, SC, ²Department of Biomedical Informatics, University of Pittsburgh, Pittsburgh, PA, ³Medicine/Rheumatology, University of Pittsburgh, Pittsburgh, PA, ⁴Medicine, Medical University of South Carolina, Charleston, SC
Background/Purpose Systemic sclerosis (SSc) is a chronic, multisystem, autoimmune inflammatory disease with genetic and non-genetic contributions to risk. The etiology of SSc, including the reasons…
Abstract Number: 1884 • 2014 ACR/ARHP Annual Meeting
Differential DNA Methylation Associated with Rheumatoid Arthritis in Disease Discordant Monozygotic Twins
Amy Webster¹, Flore Zufferey², Darren Plant³, Anne Barton^4,5, Frances Williams² and Jane Worthington^1,6, ¹Arthritis Research UK Centre for Genetics and Genomics, The University of Manchester, Manchester, United Kingdom, ²Dept Twin Research and Genetic Epidemiology, Kings College London, London, United Kingdom, ³NIHR Manchester Musculoskeletal Biomedical Research Unit, Manchester Academy of Health Sciences, Manchester, United Kingdom, ⁴Arthritis Research UK Centre for Genetics and Genomics, University of Manchester, Manchester, United Kingdom, ⁵NIHR Manchester Musculoskeletal Biomedical Research Unit, Manchester Academic Health Science Centre, Manchester, United Kingdom, ⁶The University of Manchester, Manchester, United Kingdom
Background/Purpose: Previous epigenetic studies of rheumatoid arthritis (RA) using prevalent cases and unrelated controls have indicated that DNA methylation is altered in patients with RA.…
Abstract Number: 1121 • 2014 ACR/ARHP Annual Meeting
The mtDNA Haplogroups Influence the DNA Methylome of Articular Chondrocytes
Ignacio Rego-Perez¹, Juan Fernández-Tajes¹, Mercedes Fernandez Moreno¹, Angel Soto-Hermida¹, María Eugenia Vázquez-Mosquera¹, Estefanía Cortés-Pereira¹, Maria Tamayo², Sara Relaño-Fernandez¹, Alejandro Mosquera², Natividad Oreiro-Villar¹, Carlos Fernandez-Lopez¹, Jose Luis Fernandez² and Francisco J. Blanco Garcia¹, ¹Servicio de Reumatología. Instituto de Investigación Biomédica de A Coruña (INIBIC). Complexo Hospitalario Universitario de A Coruña (CHUAC), Sergas. Universidade da Coruña (UDC), A Coruña, Spain, ²Departamento de Genética. Instituto de Investigación Biomédica de A Coruña (INIBIC). Complexo Hospitalario Universitario de A Coruña (CHUAC), Sergas. Universidade da Coruña (UDC), A Coruña, Spain
Background/Purpose Mitochondria and DNA methylation play a main role in the development of Osteoarthritis. The aim of this work is to analyze the influence of…
Abstract Number: 881 • 2014 ACR/ARHP Annual Meeting
DNA Methylation Analysis of the Temporal Artery Microenvironment Reveals a Robust T Cell Signature and Suggests a Role for TNF-α in Giant Cell Arteritis
Patrick S. Coit¹, Lindsey B. De Lott², Bin Nan³, Victor M. Elner⁴ and Amr H. Sawalha¹, ¹Division of Rheumatology, University of Michigan, Ann Arbor, MI, ²Department of Ophthalmology and Visual Sciences, University of Michigan, Ann Arbor, MI, ³Department of Biostatistics, University of Michigan, Ann Arbor, MI, ⁴Department of Ophthalmology and Visual Sciences & Department of Pathology, University of Michigan, Ann Arbor, MI
Background/Purpose: Giant cell arteritis (GCA) is a systemic large vessel vasculitis of unknown etiology. A hallmark of GCA is the presence of granulomatous inflammation of…

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