Abstracts tagged "Epigenetics"

Abstract Number: 0606 • ACR Convergence 2022
Mechanism of Joint-Specific Homeobox D10 Regulation in Rheumatoid Arthritis Fibroblast-Like Synoviocytes
Hyeonjeong Lee¹, Camilla Machado², Deepa Hammaker³, Wei Wang⁴, David Boyle⁵ and Gary S. Firestein⁶, ¹University of California San Diego, San Diego, CA, ²UCSD, San Diego, CA, ³UC San Diego, San Diego, CA, CA, ⁴University of California San Diego, San Diego, ⁵UCSD, La Jolla, CA, ⁶University of California, San Diego, San Diego, CA
Background/Purpose: Rheumatoid arthritis (RA) fibroblast-like synoviocytes (FLS) have joint-specific epigenetic and transcriptome profiles. This is particularly notable for homeobox (HOX) genes, which contribute to joint…
Abstract Number: 1698 • ACR Convergence 2022
LINE1 Reverse Transcriptase Inhibitors Abrogate Type 1 Interferon Responses
Daniel Rios¹, Nafeeza Hafeez¹, Brian Desrosiers¹, Shradha Rao¹, Jess Floro¹, Joelle Baddour¹, Nisha Perez², Greg Bisacchi², Oliver Saunders², Donna Romero¹, Menachem Fromer², Enrique Garcia-Rivera², Wilson McKerrow², Julie Behr², Bryan Thornlow², Dennis Zaller², David Proia² and Wenyan Miao², ¹Rome Therapeutics, Cambridge, MA, ²Rome Tx, Cambridge, MA
Background/Purpose: Transposable elements (TEs) are mobile DNA elements that can replicate and move from one position to another within the host genome. Through co-evolution, TEs…
Abstract Number: 0607 • ACR Convergence 2022
Cadherin 6 Regulates Rheumatoid Arthritis Fibroblasts-Like Synoviocyte Aggressiveness
Camilla Machado¹, Hyeonjeong Lee², Sho Sendo³, Narayanan Perumal⁴, Wei Wang⁵, David Boyle⁵ and Gary S. Firestein⁶, ¹UCSD, San Diego, CA, ²University of California San Diego, San Diego, CA, ³University California, San Diego (UCSD), La Jolla, CA, ⁴Eli Lilly Company, San Diego, ⁵University of California San Diego, San Diego, ⁶University of California, San Diego, San Diego, CA
Background/Purpose: Rheumatoid arthritis (RA) fibroblast-like synoviocytes (FLS) display an aggressive behavior. Previous studies have implicated cadherins in FLS function in this phenotype, which are type…
Abstract Number: 1715 • ACR Convergence 2022
Ezh2 Knockout in B Cells Impairs Plasmablast Differentiation and Ameliorates Lupus-like Disease in MRL/lpr Mice
Xiaoqing Zheng¹, Mikhail Dozmorov², Colleen Strohlein¹, Sheldon Bastacky¹ and Amr Sawalha¹, ¹University of Pittsburgh, Pittsburgh, PA, ²Virginia Commonwealth University, Richmond, VA
Background/Purpose: Enhancer of zeste homolog 2 (EZH2) has been shown to regulate early B cell development and the differentiation of antibody secreting cells (ASCs). We…
Abstract Number: 0643 • ACR Convergence 2022
Subsetting SLE Patients Based on DNA Methylation at the Time of Disease Flare
Mary Horton¹, Joanne Nitithalm², Kimberly Taylor³, Laura Trupin⁴, Patricia Katz⁵, Jinoos Yazdany⁶, Maria Dall'Era⁷, Lisa Barcellos⁸, Lindsey Criswell⁹ and Cristina M Lanata¹⁰, ¹NIH/NHGRI, Oakland, CA, ²NIH/NHGRI, Bethesda, MD, ³University of Californi, San Francisco, San Francisco, CA, ⁴UC San Francisco, San Francisco, CA, ⁵UCSF, San Rafael, CA, ⁶UCSF, San Francisco, CA, ⁷University of California, Division of Rheumatology, San Francisco, CA, ⁸School of Public Health, UC Berkeley; National Human Genome Research Institute, National Institutes of Health, Berkeley, CA, ⁹National Human Genome Research Institute, NIH, Bethesda, MD, ¹⁰NIH/NHGRI, Washington, DC
Background/Purpose: Current treatments for SLE do not adequately prevent disease progression. This lack of efficacy, in part, relates to the molecular heterogeneity of disease. The…
Abstract Number: 1726 • ACR Convergence 2022
Impaired Dynamic X-Chromosome Inactivation Maintenance in T Lymphocytes Is a Feature of Spontaneous Lupus in Female Mice and Is Exacerbated in Female-Biased Disease Models
Nikhil Jiwrajka¹, Natalie Toothacre², Zachary Beethem², Sarah Sting², Katherine Forsyth², Amanda Driscoll², William Stohl³ and Montserrat Anguera², ¹Division of Rheumatology, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, ²Department of Biomedical Sciences, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, ³University of Southern California, Los Angeles, CA
Background/Purpose: SLE is highly female-biased, yet the molecular origins of this bias remain unclear. The X chromosome contains many immune-related genes, suggesting that X-linked epigenetic…
Abstract Number: 0923 • ACR Convergence 2022
Identification of Cell-Specific DNA Methylation Changes Associated with MTX Treatment Response in Rheumatoid Arthritis
Cameron Adams¹, Nisha Nair², Hong Quach¹, Diana Quach¹, Joanne Nititham³, Mary Nakamura⁴, Jonathan Graf⁵, Lindsey Criswell⁶ and Lisa Barcellos⁷, ¹University of California, Berkeley, Berkeley, CA, ²The University of Manchester, Manchester, United Kingdom, ³National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, ⁴UCSF/SFVAHCS, San Francisco, CA, ⁵Ucsf, San Francisco, CA, ⁶National Human Genome Research Institute, NIH, Bethesda, MD, ⁷School of Public Health, UC Berkeley; National Human Genome Research Institute, National Institutes of Health, Berkeley, CA
Background/Purpose: MTX is the recommended first treatment for rheumatoid arthritis (RA); however, only ~40% respond adequately to MTX. Significant joint damage can occur in the…
Abstract Number: 1727 • ACR Convergence 2022
BATF Represses BIM Expression to Sustain the T Cell Anergy Program
Philip Titcombe, Milagros Silva-Morales, Na Zhang and Daniel Mueller, University of Minnesota, Minneapolis, MN
Background/Purpose: T cell tolerance is essential for preventing autoimmune diseases and resolving inflammation. To maintain tolerance, CD4+ T cells recognizing self-antigens in the periphery can…
Abstract Number: 0999 • ACR Convergence 2022
Differences in Chromatin Accessibility Pre- and Post-Induction Therapy in Pediatric Lupus
Joyce Hui-Yuen¹, Kaiyu Jiang², Susan Malkiel³, Betty Diamond³ and James Jarvis⁴, ¹North Shore LIJ Health System, Great Neck, NY, ²University at Buffalo, Buffalo, NY, ³Feinstein Institutes for Medical Research, Manhasset, NY, ⁴Department of Pediatrics, University at Buffalo Clinical and Translational Research Center, Buffalo, NY
Background/Purpose: Systemic lupus erythematosus (SLE) may be triggered by gene-environment interactions. Data are scarce on how epigenetic variance contributes to disease risk in pediatric SLE…
Abstract Number: 1898 • ACR Convergence 2022
Radiographic Osteoarthritis Progression Can Be Predicted via Pyrosequencing Analysis of Baseline Peripheral Blood
Chris Dunn¹, Cassandra Velasco², Leoni Schlupp³, Emmaline Prinz³, Vladislav Izda⁴, Liubov Arbeeva⁵, Yvonne Golightly⁶, Amanda Nelson⁶ and Matlock Jeffries³, ¹University of Oklahoma Health Sciences Center, Edmond, OK, ²University of Oklahoma Health Sciences Center, Oklahoma City, OK, ³Oklahoma Medical Research Foundation, Oklahoma City, OK, ⁴Oklahoma Medical Research Foundation, New York, NY, ⁵University of North Carolina Chapel Hill, Chapel Hill, NC, ⁶UNC School of Medicine, Chapel Hill, NC
Background/Purpose: Knee osteoarthritis (OA) is a heterogeneous disease characterized by a variety of clinical and molecular phenotypes. However, we do not yet have robust biomarkers…
Abstract Number: 1105 • ACR Convergence 2021
Discovering Variants in Suspected Monogenic Systemic Inflammatory Disease: An Adult Case Series
Jason An¹, Madeline Couse¹, Dilan Dissanayake², Daniela Dominguez², Ronald Laxer¹, Christian Marshall¹, Johannes Roth³, Robert Rottapel⁴ and Linda Hiraki², ¹SickKids, Toronto, ON, Canada, ²The Hospital for Sick Children, Toronto, ON, Canada, ³University of Ottawa, Ottawa, ON, Canada, ⁴St Michael's Hospital, Toronto, ON, Canada
Background/Purpose: Monogenic systemic inflammatory diseases (MSID) are a heterogeneous group of rare conditions caused by single gene variants leading to immune dysregulation. Diagnostic yield of…
Abstract Number: 1263 • ACR Convergence 2021
Treatment of Pediatric Lupus Is Associated with Significant Re-Organization of B Cell Chromatin
Joyce Hui-Yuen¹, Kaiyu Jiang², Susan Malkiel³, Betty Diamond³ and James Jarvis⁴, ¹North Shore LIJ Health System, Great Neck, NY, ²University at Buffalo, Buffalo, NY, ³Northwell Health, Manhasset, NY, ⁴University at Buffalo Jacobs School of Medicine, Buffalo, NY
Background/Purpose: Systemic lupus erythematosus (SLE) may be triggered by gene-environment interactions. Data remain scarce on how epigenetic variance contributes to disease risk in pediatric SLE…
Abstract Number: 1470 • ACR Convergence 2021
Cartilage Epigenetic Changes Induced by Microbial DNA Amplified from Human OA Samples
Vladislav Izda¹, Christopher Dunn², Cassandra Sturdy¹, Jake Martin¹, Cassandra Velasco², Paul Jacob³ and Matlock Jeffries¹, ¹Oklahoma Medical Research Foundation, Oklahoma City, OK, ²University of Oklahoma Health Sciences Center, Oklahoma City, OK, ³Oklahoma Joint Reconstruction Institute, Oklahoma City, OK
Background/Purpose: Strong links between epigenetic changes, particularly alterations in DNA methylation, have been linked with the onset and progression of knee osteoarthritis (OA); however, the…
Abstract Number: 1480 • ACR Convergence 2021
LncRNA XIST Alters the Balance of Peripheral Blood Immune Cells in Systemic Lupus Erythematosus by Regulating the miR-17-92/OFLM4 and CEACAM8 Axis
Qi Cheng, Mo Chen, xin Chen, peiyu zhang, huaxiang wu and yan du, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China (People's Republic)
Background/Purpose: X-inactive-specific transcript (XIST) has been shown to silence linked genes on the X chromosome that may be related to the pathogenesis of systemic lupus…
Abstract Number: 1935 • ACR Convergence 2021
Skewed Escape from X-inactivation: Insights into the Female Bias of Sjögren’s Syndrome
Teressa Shaw¹, Wei Zhang², Sara McCoy³, Xueer Qiu¹, Adam Pagenkopf¹, Robert Hal Scofield⁴, Jacques Galipeau³ and Yun Liang¹, ¹University of Wisconsin-Madison, Madison, WI, ²University of California San Diego, La Jolla, CA, ³University of Wisconsin, Madison, WI, ⁴Oklahoma Medical Research Foundation, Oklahoma City, OK
Background/Purpose: Many autoimmune diseases feature increased prevalence in females, with primary Sjögren's syndrome (pSS) being the most female-predominant autoimmune disease with a female-to-male ratio of…

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