Abstracts tagged "Epigenetics"

Abstract Number: 892 • 2012 ACR/ARHP Annual Meeting
The Epigenetically Repressed Long Noncoding RNA Hotair Influences the Expression of Matrix Metalloproteases in Synovial Fibroblasts
Michelle Trenkmann¹, Matthias Brock², Renate E. Gay³, Beat A. Michel⁴, Lars C. Huber² and Steffen Gay³, ¹Center of Experimental Rheumatology, University Hospital Zurich and Zurich Center of Integrative Human Physiology (ZIHP), Zurich, Switzerland, ²Department of Internal Medicine, University Hospital Zurich, Zurich, Switzerland, ³Center of Experimental Rheumatology, University Hospital Zurich, Zurich, Switzerland, ⁴Department of Rheumatology, University Hospital Zurich, Zurich, Switzerland
Background/Purpose: Long noncoding RNAs (lncRNA, >200nt) have recently emerged as regulators of gene expression functioning as signals, decoys, guides or scaffolds for transcription factors and/or…
Abstract Number: 438 • 2012 ACR/ARHP Annual Meeting
Methyl Supplementation of Rheumatoid Arthritis Synovial Fibroblasts Regulates the Expression of Transcription Factors and Matrix Metalloproteinases
Edvardas Bagdonas¹, Emmanuel Karouzakis², Astrid Jungel², Caroline Ospelt¹, Renate E. Gay¹, Steffen Gay¹, Beat A. Michel¹ and Michel Neidhart¹, ¹Center of Experimental Rheumatology, University Hospital Zurich, Zurich, Switzerland, ²Center of Experimental Rheumatology, University Hospital Zurich and Zurich Center of Integrative Human Physiology (ZIHP), Zurich, Switzerland
Background/Purpose: Previously we reported that methyl supplementation can reverse the global hypomethylation of rheumatoid arthritis synovial fibroblasts (RASF) and attenuate their aggressive behaviour. Now we…
Abstract Number: 419 • 2012 ACR/ARHP Annual Meeting
Epigenome Analysis of Rheumatoid Arthritis Synovial Fibroblasts Revealed TBX-5 As a Novel Transcription Factor in Chemokine Regulation
Emmanuel Karouzakis¹, Michelle Trenkmann², Renate E. Gay¹, Beat A. Michel¹, Steffen Gay¹ and Michel Neidhart¹, ¹Center of Experimental Rheumatology, University Hospital Zurich, Zurich, Switzerland, ²Center of Experimental Rheumatology, University Hospital Zurich and Zurich Center of Integrative Human Physiology (ZIHP), Zurich, Switzerland
Background/Purpose: Changes in DNA methylation and histone marks have been associated with diseases such as cancer, rheumatoid arthritis (RA) and systemic lupus erythematosus. Previously, we…
Abstract Number: 308 • 2012 ACR/ARHP Annual Meeting
Next-Generation Sequencing of Urinary Microrna in Human Lupus Nephritis
Beatrice Goilav¹, Iddo Z. Ben-Dov², Irene Blanco³, Olivier Loudig⁴, Dawn M. Wahezi⁵ and Chaim Putterman⁶, ¹Division of Nephrology, Children's Hospital at Montefiore, Bronx, NY, ²Laboratory of RNA Molecular Biology, The Rockefeller University, New York, NY, ³Rheumatology, Albert Einstein College of Medicine, Bronx, NY, ⁴Epidemiology, Albert Einstein College of Medicine, Bronx, NY, ⁵Pediatric Rheumatology, Children's Hospital Montefiore, Bronx, NY, ⁶Division of Rheumatology, Albert Einstein College of Medicine, Bronx, NY
Background/Purpose: Lupus nephritis (LN) is a common manifestation of SLE associated with significant morbidity and mortality. microRNAs (miRs) are small non-coding RNAs that regulate translation…
Abstract Number: 2419 • 2012 ACR/ARHP Annual Meeting
Novel Candidate Genes for Structural Foot Disorders: A Genome-Wide Association Study in an Older Caucasian Population
Marian T. Hannan¹, Yi-Hsiang Hsu², Chia Ho Cheng², Youfang Liu³ and Joanne M. Jordan⁴, ¹Institute for Aging Research, Hebrew SeniorLife & Harvard Medical School, Boston, MA, ²Institute for Aging Research, Hebrew SeniorLife & Harvard Med Sch, Boston, MA, ³University of North Carolina, Chapel Hill, NC, ⁴Thurston Arthritis Research Center, University of North Carolina, Chapel Hill, NC
Background/Purpose: Structural foot disorders, such as hallux valgus, deformities of the lesser toes (toes 2-5) and plantar soft-tissue atrophy, commonly affect ~ 60% of older…
Abstract Number: 2332 • 2012 ACR/ARHP Annual Meeting
Suppression of PP2Ac Causes DNA Hypermethylation Through Enhanced Pmek/Perk Activity in T Cells
Katsue S. Watanabe¹, Kamalpreet Nagpal² and George C. Tsokos³, ¹Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan, ²Medicine/Rheumatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, ³Medicine/Rheumatology, BIDMC, Harvard Medical School, Boston, MA
Background/Purpose: Although many reports have focused on the impaired MEK-ERK signaling pathway in T cells from systemic lupus erythematosus (SLE) patients which results in suppression…
Abstract Number: 2317 • 2012 ACR/ARHP Annual Meeting
Protein Phosphatase 5 (PP5) Regulates Methylation Sensitive Gene Expression in CD4+ T Cells
Dipak R. Patel, Gabriela Gorelik and Bruce C. Richardson, Internal Medicine, University of Michigan, Ann Arbor, MI
Background/Purpose: CD4+CD28- T cells are enriched in chronic inflammatory diseases like rheumatoid arthritis (RA) and lupus. They are cytotoxic and resistant to apoptosis. Compared to…
Abstract Number: 2285 • 2012 ACR/ARHP Annual Meeting
Systemic Lupus Erythematosus RNA-Seq: Endogenous Retroviral Group K Overexpression in Monocytes
Lihua Shi¹, Zhe Zhang², Michelle Petri³ and Kate Sullivan⁴, ¹Immunology ARC 1216, The Children's Hospital of Philadelphia, Philadelphia, PA, ²Bioinformatics, Bioinformatics, Children's Hospital of Philadelphia, Philadelphia, PA, ³Johns Hopkins University School of Medicine, Baltimore, MD, ⁴Allergy Immunology, The Children's Hospital of Philadelphia, Philadelphia, PA
Background/Purpose: Gene expression studies of peripheral blood mononuclear cells in SLE have consistently shown an interferon signature. We previously examined monocytes from SLE patients to…
Abstract Number: 2297 • 2012 ACR/ARHP Annual Meeting
Decrease Activity of DNA Demethylase in SSc Fibroblast and Microvascular Endothelial Cells: A Possible Mechanism for Persistence of SSc Phenotype
Bashar Kahaleh¹ and Yongqing Wang², ¹Medicine/Rheumatology, University of Toledo, Toledo, OH, ²Medicine, University of Toledo, Toledo, OH
Background/Purpose: DNA methylation is one of the best-characterized epigenetic modifications that have been implicated in numerous biologic and pathologic processes. It is initiated by DNA…
Abstract Number: 2270 • 2012 ACR/ARHP Annual Meeting
The DNA Methylome of Systemic Lupus Erythematosus (SLE) From Whole Peripheral Blood Mononuclear Cells (PBMCs)
Robert Shoemaker¹, Lou H. Bookbinder², David L. Boyle³, Gary S. Firestein⁴, Jonathan E. Lim⁵ and David W. Anderson⁶, ¹Bioinformatics, NexDx, Inc., San Diego, CA, ²Molecular Biology, NexDx, Inc., San Diego, ³Div of Rheum, UCSD School of Medicine, La Jolla, CA, ⁴Div of Rheumatology, UCSD School of Medicine, La Jolla, CA, ⁵Research and Development, NexDx, Inc., San Diego, ⁶Research and Development, NexDx, Inc., San Diego, CA
Background/Purpose: SLE is a disease where epigenetic mechanisms play a role. Methylation of DNA at CpG loci is known to influence the suppression or activation…
Abstract Number: 1610 • 2012 ACR/ARHP Annual Meeting
The DNA Methylation Signature in Fibroblast-Like Synoviocytes (FLS) Defines Critical Pathogenic Pathways in Rheumatoid Arthritis (RA)
David L. Boyle¹, Robert Shoemaker², David W. Anderson³, Wei Wang⁴ and Gary S. Firestein⁵, ¹Div of Rheum, UCSD School of Medicine, La Jolla, CA, ²NexDx, Inc., San Diego, CA, ³Research and Development, NexDx, Inc., San Diego, CA, ⁴Chemistry, UCSD, La Jolla, CA, ⁵Div of Rheumatology, UCSD School of Medicine, La Jolla, CA
Background/Purpose: A DNA methylation signature has been characterized that distinguishes RA FLS from osteoarthritis (OA) and normal (NL) FLS. The presence of epigenetic changes in…
Abstract Number: 985 • 2012 ACR/ARHP Annual Meeting
Inverse Relation Between the tumor Necrosis Factor Promoter Methylation and Trascript Leveles in Leukocytes From Patients with Rheumatoid Arthritis
James R. Maxwell¹, Lyndsey H. Taylor², Richardo A. Pachecho², Neil Lawrence², Gordon W. Duff³, M. Dawn. Teare² and Anthony G. Wilson⁴, ¹University of Sheffield, Sheffield, United Kingdom, ²University of Sheffield, United Kingdom, ³Royal Hallamshire Hospital, Sheffield, United Kingdom, ⁴Infection and Immunity, University of Sheffield, Sheffield, United Kingdom
Background/Purpose: The importance of the epigenetic signature in RA is unclear but levels of methylation of CpG motifs in the TNF promoter are known to…

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