Abstracts tagged "Epigenetics"

Abstract Number: 2556 • 2016 ACR/ARHP Annual Meeting
Deficient Expression of the Novel Rheumatoid Arthritis (RA) Risk Gene, LBH, Induces S Phase Arrest in RA Fibroblast-like Synoviocytes (FLS)
Shinji Matsuda¹, Deepa Hammaker², Steven Dowdy³, David L. Boyle⁴ and Gary Firestein⁵, ¹Medicine, UC San Diego, La Jolla, CA, ²Division of Rheumatology, Allergy and Immunology, UCSD School of Medicine, La Jolla, CA, ³UC San Diego School of Medicine, La Jolla, CA, ⁴Division of Rheumatology, Allergy and Immunology, University of California, San Diego, La Jolla, CA, ⁵Medicine, UCSD, La Jolla, CA
Background/Purpose: LBH (Limb-bud and heart development) was recently identified as an RA risk gene that has abnormally methylated loci and a functional enhancer SNP in…
Abstract Number: 3119 • 2016 ACR/ARHP Annual Meeting
Complete Whole Genome Transcriptome, DNA Methylation, and Histone Mark Analysis of Rheumatoid Arthritis (RA) Fibroblast-like Synoviocytes (FLS) Reveals a Distinctive Epigenetic Landscape and Critical Pathogenic Pathways
Rizi Ai¹, Deepa Hammaker², David L. Boyle³, Andre ‎ Wildberg⁴, Keisuke Maeshima², Emmanuele Palescandolo⁵, Vinod Krishna⁵, Bryan Linggi⁶, Radu Dobrin⁵, John W. Whitaker⁷, Wei Wang⁸ and Gary Firestein⁹, ¹Chemistry and Biochemistry, UC San Diego, La Jolla, CA, ²Division of Rheumatology, Allergy and Immunology, UCSD School of Medicine, La Jolla, CA, ³Division of Rheumatology, Allergy and Immunology, University of California, San Diego, La Jolla, CA, ⁴Chemistry and Biochemistry, UNIVERSITY OF CALIFORNIA SAN DIEGO, LA JOLLA, CA, ⁵Janssen Pharmaceuticals, Spring House, PA, ⁶janssen Pharmaceuticals, Spring House, PA, ⁷Janssen Pharmaceuticals, La Jolla, CA, ⁸Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, ⁹Medicine, UCSD, La Jolla, CA
Background/Purpose: RA FLS display a unique aggressive phenotype with a distinctive DNA methylation profile that marks genes involved with cytokine signaling, cell recruitment, and matrix…
Abstract Number: 3120 • 2016 ACR/ARHP Annual Meeting
RA Net: A Systems Biology Approach to Identify Genes Regulating Pathogenic Pathways in Rheumatoid Arthritis (RA) Fibroblast-like Synoviocytes (FLS)
Wei Wang¹, RIchard Ainsworth², Richard Stein², Rizi Ai³ and Gary Firestein⁴, ¹Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA, ²UC San Diego, La Jolla, CA, ³Chemistry and Biochemistry, UC San Diego, La Jolla, CA, ⁴Medicine, UCSD, La Jolla, CA
Background/Purpose: Rheumatoid arthritis (RA) remains a significant unmet need despite improved therapy. Defining the interlaced nature of gene regulation and disease pathogenesis using integrative systems…
Abstract Number: 3256 • 2015 ACR/ARHP Annual Meeting
Epigenetic Chromosome Conformations Predict MTX Responsiveness in Early Rheumatoid Arthritis Patients
Claudio Carini¹, Aroul Ramadass², Philip Jordan², Ewan Hunter², Alexandre Akoulitchev², Iain. B. McInnes³, Carl. S. Goodyear³ and Scottish Early Rheumatoid Arthritis Inception Cohort Investigators, ¹35 Cambridgepark Drive, Pfizer, Cambridge, MA, ²Oxford Biodynamics, Oxford, United Kingdom, ³Institute of Infection, Immunity and Inflammation, College of Medicine, Veterinary Medicine and Life Sciences, University of Glasgow, Glasgow, United Kingdom
Background/Purpose: In early rheumatoid arthritis (RA), it is not possible to predict response to first line DMARDs (e.g. methotrexate (MTX)) and as such treatment decisions…
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: 804 • 2015 ACR/ARHP Annual Meeting
Prolactin Induces Interferon Regulatory Factor 1 Activation and Histone H4 Hyperacetylation in Primary Monocytes Comparable to Changes Seen in Monocytes from Systemic Lupus Erythematosus Patients
Yiu Tak Leung¹, Kathleen E. Sullivan², Kelly Maurer³, Li Song⁴ and Lihua Shi³, ¹Medicine/Rheumatology, University of Pennsylvania, Philadelphia, PA, ²Allergy Immunology, The Children's Hospital of Philadelphia, Philadelphia, PA, ³Immunology ARC 1216, The Children's Hospital of Philadelphia, Philadelphia, PA, ⁴Allergy Immunology, Children's Hospital of Philadelphia, Philadelphia, PA
Background/Purpose: : Epigenetic changes have been described in systemic lupus erythematosus (SLE) and offer a potential explanation for the chronicity of disease. We previously found…
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: 1163 • 2015 ACR/ARHP Annual Meeting
Dynamic Regulation of Enhancers and Super-Enhancers in Rheumatoid Arthritis Synovial Finroblasts
Sung-Ho Park¹, Christopher Sohn¹, Konstantinos Loupasakis², Angela Lee³, Eugenia Giannopoulou¹, Lionel B. Ivashkiv³ and George D. Kalliolias¹, ¹Hospital for Special Surgery, New York, NY, ²Rheumatology, Hospital for Special Surgery Weill Cornell Medical College, New York, NY, ³Medicine, Hospital for Special Surgery, New York, NY
Background/Purpose: Enhancers are regulatory elements that modulate transcriptional rates of genes. Super-enhancers (SupE) are extremely large enhancers associated primarily with highly expressed genes that have…
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…

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