Abstracts tagged "Gene Expression"

Abstract Number: 1682 • ACR Convergence 2022
Peptidyl Arginine Deiminase Expression and Macrophage Polarization Following Stimulation with Citrullinated and Malondialdehyde-acetaldehyde Modified Fibrinogen
nozima Aripova¹, Michael Duryee¹, carlos hunter¹, Bryant England¹, Debra Romberger¹, James O'Dell¹, Geoffrey Thiele¹ and Ted Mikuls², ¹University of Nebraska Medical Center, Omaha, NE, ²Division of Rheumatology, University of Nebraska Medical Center, Omaha, NE
Background/Purpose: Post-translational modifications (PTM) of extracellular matrix proteins, such as fibrinogen, have been implicated in the pathogenesis of rheumatoid arthritis (RA). Citrullination, a type of…
Abstract Number: 0397 • ACR Convergence 2022
Aberrant Global DNA Methylation in Peripheral Blood Cell Subpopulations of Patients with Axial Spondyloarthritis
ERIC TOUSSIROT¹, Sebastien Pasquereau², Charline Vauchy³, Daniel Wendling⁴, Jean Charles Balblanc⁵, caroline Laheurte⁶, Marc Puyraveau⁷ and Georges Herbein², ¹CHU de Besançon, Besançon, France, ²EA EPILAB, Besancon, Besançon, France, ³INSERM CIC-1431, Besancon, Besançon, France, ⁴CHU, University Teaching Hospital, Besançon, France, ⁵Rhumatologie, Hopital Nord Franche Comté, Trevenans, France, ⁶EFS Bourgogne Franche Comté, Biomonotoring Plateform, Besançon, France, ⁷INSERM CIC-1431 CHU, Besançon, France
Background/Purpose: Axial spondyloarthritis (axSpA) corresponds to a group of chronic inflammatory diseases mainly affecting the axial skeleton. TNFa and IL-17A have been identified as key…
Abstract Number: 0644 • ACR Convergence 2022
Long-lived Plasma Cells in the Lupus Bone Marrow Are Imprinted by Interferon
Jennifer Barnas¹, Diana Alzamareh², Neha Nandedkar-Kulkarni², Jennifer Albrecht², Nida Meednu², Cameron Baker², Andrew McDavid¹ and Jennifer Anolik², ¹University of Rochester, Rochester, NY, ²University of Rochester Medical Center, Rochester, NY
Background/Purpose: Systemic lupus erythematous (SLE) is a complex autoimmune disorder with heterogeneous disease presentation and a multi-pronged pathogenesis. Although autoreactive plasma cells (PC) play a…
Abstract Number: 1683 • ACR Convergence 2022
Malondialdehyde-Acetaldehyde (MAA) Modified Matrix Gla Protein (MGP) Increases Citrullination by Human Macrophages
Spencer Jones¹, nozima Aripova¹, Michael Duryee¹, Austin Ragland¹, Bryant England¹, Ted Mikuls² and Geoffrey Thiele¹, ¹University of Nebraska Medical Center, Omaha, NE, ²Division of Rheumatology, University of Nebraska Medical Center, Omaha, NE
Background/Purpose: Malondialdehyde and acetaldehyde, by-products of lipid peroxidation, react with free amino groups on proteins to form a stable post-translational modification (PTM), termed MAA. MAA…
Abstract Number: 0486 • ACR Convergence 2022
Gene Expression Profile of Temporal Artery Tissue and Whole Blood in Giant Cell Arteritis
Marcia Friedman¹, Daniel Albert², Dongseok Choi³, Hillary Stiefel², Colin Oglesbee-Venghaus², Kimberly Ogle², Christina Harrington⁴, David Wilson² and James T. Rosenbaum⁵, ¹Oregon Health and Science University, Division of Arthritis and Rheumatic Diseases, Portland, OR, ²Casey Eye Institute, Portland, OR, ³OHSU-PSU School of Public Health, Portland, OR, ⁴Oregon Health & Science University, Portland, OR, ⁵Legacy Devers Eye Institute, Portland, OR
Background/Purpose: Diagnosing giant cell arteritis GCA is notoriously challenging, as there are no reliable blood biomarkers and temporal artery biopsy (TAB) has a sensitivity of…
Abstract Number: 0647 • ACR Convergence 2022
Transcriptomic Analysis of Lupus Nephritis Kidneys Identifies Molecular Endotypes
Kathryn Kingsmore Allison¹, Sneha Shrotri¹, Prathyusha Bachali², Nan Shen³, Amrie Grammer⁴ and Peter Lipsky¹, ¹AMPEL BioSolutions, Charlottesville, VA, ²AMPEL BioSolutions, Redmond, WA, ³Shanghai Jiang Tong University School of Medicine, Shanghai, China, ⁴AMPEL LLC, Charlottesville, VA
Background/Purpose: Predicting the course or response to treatment of lupus nephritis (LN) from standard renal biopsies is problematic. We, therefore sought to understand the molecular…
Abstract Number: 1686 • ACR Convergence 2022
Post-translational Modification of Matrix-gla Protein with Malondialdehyde-Acetaldehyde Alters Cellular Responses by Human Fibroblasts
Austin Ragland¹, Michael Duryee¹, nozima Aripova¹, Spencer Jones¹, Ted Mikuls² and Geoffrey Thiele¹, ¹University of Nebraska Medical Center, Omaha, NE, ²Division of Rheumatology, University of Nebraska Medical Center, Omaha, NE
Background/Purpose: Post-translational modifications with malondialdehyde-acetaldehyde (MAA) alter protein structure and function, inducing pro-inflammatory and pro-fibrotic responses characteristic of rheumatoid arthritis (RA). Matrix-gla protein (MGP) chelates…
Abstract Number: 0508 • ACR Convergence 2022
Detecting the Critical Factors in the Pathogenesis of Anti-melanoma Differentiation-associated Gene 5–positive Dermatomyositis (MDA5 DM) by Gene Expression Analysis of Peripheral Blood
Yoshinobu Koyama¹, Yoshiharu Sato², Yu Nakai¹ and Moe Sakamoto¹, ¹Japanese Red Cross Okayama Hospital, Okayama, Japan, ²DNA Chip Research Inc, Tokyo, Japan
Background/Purpose: MDA5 DM is a distinct subtype of DM that is characterized by high mortality due to rapid progressive interstitial lung disease (ILD). MDA5 is…
Abstract Number: 0664 • ACR Convergence 2022
Development of a Novel Gene Expression-based Molecular Score That Characterizes Individual Lupus Patients
Prathyusha Bachali¹, Erika Hubbard², Kathryn Kingsmore Allison², Yisha He², Amrie Grammer³ and Peter Lipsky², ¹AMPEL BioSolutions, Redmond, WA, ²AMPEL BioSolutions, Charlottesville, VA, ³AMPEL LLC, Charlottesville, VA
Background/Purpose: Patients with SLE can exhibit considerable clinical heterogeneity. A robust patient stratification approach can help to characterize individual lupus patients more effectively based on…
Abstract Number: 1687 • ACR Convergence 2022
A Core Inflammation Program Conserved Across Human and Murine Neutrophils
Nicolaj hackert¹, Felix Radtke¹, Tarik Exner¹, Carsten Müller-Tidow¹, Hanns-Martin Lorenz¹, Peter Nigrovic², Guido Wabnitz¹ and Ricardo Grieshaber-Bouyer¹, ¹Heidelberg University Hospital, Heidelberg, Germany, ²Boston Children's Hospital, Boston, MA
Background/Purpose: Neutrophils mediate a range of homeostatic and inflammatory processes and display substantial phenotypic and functional heterogeneity. While animal models enable important mechanistic discoveries, differences…
Abstract Number: 0519 • ACR Convergence 2022
Myeloablation Followed by Hematopoietic Stem Cell Transplantation Leads to Long-term Normalization of Systemic Sclerosis Molecular Signatures
Nancy Wareing¹, Xuan Wang², Lynette Keyes-Elstein³, Ellen Goldmuntz⁴, Marka Lyons⁵, Peter McSweeney⁶, Daniel Furst⁷, Richard Nash⁶, Leslie Crofford⁸, Beverly Welch⁹, Ashley Pinckney¹⁰, Maureen Mayes¹¹, Keith Sullivan¹² and Shervin Assassi¹³, ¹UTHealth Houston McGovern Medical School, Houston, TX, ²Baylor Institute for Immunology Research, Dallas, TX, ³Rho, Chapel Hill, NC, ⁴NIAID/ NIH, Washington, DC, ⁵University of Texas McGovern Medical School at Houston, Houston, TX, ⁶Colorado Blood Cancer Institute, Denver, CO, ⁷University of California Los Angeles, Los Angeles, CA, ⁸Vanderbilt University Medical Center, Nashville, TN, ⁹NIAID/NIH, Bethesda, MD, ¹⁰Rho, St. Louis Park, MN, ¹¹Division of Rheumatology and Clinical Immunogenetics, University of Texas McGovern Medical School, Houston, TX, ¹²Duke University, Durham, NC, ¹³McGovern Medical School, University of Texas, Houston, TX
Background/Purpose: In the randomized Scleroderma: Cyclophosphamide Or Transplantation (SCOT trial), normalization of systemic sclerosis (SSc) peripheral blood gene expression signatures at the 26-month visit was…
Abstract Number: 0935 • ACR Convergence 2022
Targeted Synovial Tissue RNA-Seq Coupled with Artificial Intelligence Accurately Predicts Early Rheumatoid Arthritis Patients Likely to Respond to CsDMARDs, Enriching CsDMARDs Response Rates and Enabling Early Identification of Patients Requiring Subsequent Biological Therapy
Giorgio CASABURI, Tyler O'Malley, Todd Holscher and Ming-Chou Lee, Exagen, Inc., Vista, CA
Background/Purpose: Rheumatoid arthritis (RA) is a chronic, inflammatory, systemic autoimmune disease, affecting the joints with varying severity. RA affects approximately 0.5/1% of adults in the…
Abstract Number: 1716 • ACR Convergence 2022
The Transcriptomic Landscape of Nephritic Kidneys Reveals Mechanisms for End Organ Resistance to Damage in Lupus-prone Mice
Andrea Daamen¹, Hongyang Wang², Prathyusha Bachali³, Shu Man Fu², Amrie Grammer⁴ and Peter Lipsky¹, ¹AMPEL BioSolutions, Charlottesville, VA, ²University of Virginia, Charlottesville, VA, ³AMPEL BioSolutions, Redmond, WA, ⁴AMPEL LLC, Charlottesville, VA
Background/Purpose: Pathologic inflammation is a major driver of kidney damage in lupus nephritis (LN), but the immune mechanisms of disease progression and risk factors for…
Abstract Number: 0528 • ACR Convergence 2022
Nasal Epithelial Gene Expression Profiling Preceding Relapse in Patients with Granulomatosis with Polyangiitis
Fang R. Zhao¹, Rebecca Deek², James Garifallou³, Jalal Jalaly², Cailu Lin⁴, Danielle Reed⁴, Shubhasree Banerjee², Naomi Amudala², Antoine Sreih⁵, Sherry Chou², Virginia Livolsi², Ronald Collman², Hongzhe Lee², Peter Merkel², Peter Grayson⁶, Noam Cohen², Jonathan Miner² and Rennie Rhee², ¹Washington University in St. Louis, St. Louis, MO, ²University of Pennsylvania, Philadelphia, PA, ³Children's Hospital of Philadelphia, Philadelphia, PA, ⁴Monell Center, Philadelphia, PA, ⁵Bristol Myers Squibb, Philadelphia, PA, ⁶National Institutes of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, MD
Background/Purpose: Predicting relapse is a major challenge in granulomatosis with polyangiitis (GPA). We previously demonstrated changes in the nasal microbiota, particularly Corynebacterium tuberculostearicum, prior to…
Abstract Number: 0984 • ACR Convergence 2022
Impact of Hydroxychloroquine on Interferon Pathway Expression of SLE Phenotypic Subsets in the Absence of Background Medications
Colin Mowery, Miles Smith, Kevin Thomas, Susan Macwana, Wade deJager, Stan Kamp, Cristina Arriens, Teresa Aberle, Judith James, Joel Guthridge and Joan Merrill, Oklahoma Medical Research Foundation, Oklahoma City, OK
Background/Purpose: Chronic activation of interferon (IFN) pathways is a key driver of immune dysregulation in SLE. Hydroxychloroquine (HCQ) inhibits toll-like receptors 7 and 9 in…

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