Abstract Number: 1682 • ACR Convergence 2022
Peptidyl Arginine Deiminase Expression and Macrophage Polarization Following Stimulation with Citrullinated and Malondialdehyde-acetaldehyde Modified Fibrinogen
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: 1686 • ACR Convergence 2022
Post-translational Modification of Matrix-gla Protein with Malondialdehyde-Acetaldehyde Alters Cellular Responses by Human Fibroblasts
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: 1734 • ACR Convergence 2022
Identification of Sjögren’s Disease-Associated T Cell Receptors Through Deep Sequencing and Single-Cell Transcriptomics
Background/Purpose: Sjögren's disease (SjD) is a chronic rheumatic autoimmune disorder that primarily targets the lacrimal and salivary glands (SG) resulting in dry eyes and dry…Abstract Number: 1735 • ACR Convergence 2022
Clonally Expanded Cytotoxic CD8+ T Cells Recognize Citrullinated Antigens in ACPA+ Rheumatoid Arthritis
Background/Purpose: Rheumatoid arthritis (RA) is a systemic autoimmune disease associated with MHC polymorphisms. The shared epitope polymorphism in MHC class II genes is by far…Abstract Number: 1741 • ACR Convergence 2022
Mutated Nod2 Controls T Cell Function and Promotes Uveitis in a Blau Syndrome Mouse Model
Background/Purpose: Mutations in the microbial signaling molecule NOD2 cause granulomatous uveitis, arthritis, and dermatitis in Blau Syndrome. We previously showed a novel role for Nod2…Abstract Number: 1742 • ACR Convergence 2022
Shared Epitope Allomorphs Directly Influence Antigen-specific T-cell Responses in RA
Background/Purpose: The products of rheumatoid arthritis (RA)-associated MHC class II risk alleles HLA-DRB1*04:01 and *04:04 (DR4) differ only by two amino acids in the peptide…Abstract Number: 1747 • ACR Convergence 2022
Changes in the Number and Phenotype of Citrullinated-Antigen Specific T Cells Correlate with Treatment Outcome in Seropositive Rheumatoid Arthritis
Background/Purpose: In Rheumatoid arthritis (RA) citrullinated antigen reactive T cells are key drivers of disease, but knowledge about their relative number and phenotype remains limited.…Abstract Number: 1749 • ACR Convergence 2022
Mass Spectrometry-Based HLA Peptidomics Analysis Reveals Both Expected and Novel Citrullinated Antigen Targets in Rheumatoid Arthritis
Background/Purpose: Rheumatoid arthritis (RA) is an autoimmune disease in which citrullinated self-antigens are recognized by anti-citrullinated protein antibodies (ACPA) and T cells. ACPA are a…Abstract Number: 2026 • ACR Convergence 2022
Serum and Tear Autoantibodies from nor Mice as Potential Diagnostic Indicators of Local and Systemic Inflammation in Sjögren’s Syndrome
Background/Purpose: Sjögren's Syndrome (SS) is an autoimmune disease characterized by infiltration of lymphocytes into lacrimal (LG) and salivary (SG) glands and their concurrent loss of…Abstract Number: 0045 • ACR Convergence 2022
Rheumatoid Arthritis Patient-derived Anti-citrullinated Protein Antibodies (ACPAs) Ameliorate Joint Inflammation in Early Collagen-antibody Induced Arthritis (CAIA)
Background/Purpose: ACPAs are present in two-thirds of patients with rheumatoid arthritis (RA) and are associated with higher risks for severe bone erosions. The pathogenic role…Abstract Number: 2185 • ACR Convergence 2022
Development of a Novel Regulatory T Cell-Based Therapy for Patients with Rheumatoid Arthritis
Background/Purpose: Rheumatoid arthritis (RA) is a chronic autoimmune inflammatory condition with persistent unmet medical need despite significant treatment advances. The pathogenesis of RA is initiated…Abstract Number: 0048 • ACR Convergence 2022
Combination of Repetitive Inhalant Endotoxin Exposure and Collagen-induced Arthritis Interact in a Testosterone-dependent Manner to Drive Inflammatory Lung Disease Processes and Arthritis Severity in Mice
Background/Purpose: Respiratory-related diseases are among the most common causes of death in rheumatoid arthritis (RA). Although autoimmune diseases are reported in higher frequency in females,…Abstract Number: 0256 • ACR Convergence 2022
Patients with ACPA-positive and ACPA-negative Rheumatoid Arthritis Show Different Circulating Auto-antibody Repertoires
Background/Purpose: RA is commonly diagnosed through a serological test for the presence of ACPA, and RA patients who test positive are collectively known as 'ACPA-positive…Abstract Number: 0326 • ACR Convergence 2022
Mapping Anti-Mitochondrial Antibodies over Time in a Lupus Inception Cohort
Background/Purpose: Mitochondria can be both pro-inflammatory and antigenic. We hypothesize (1) that anti-mitochondrial antibodies (AMA) are present in lupus and (2) can predict outcomes. Our…Abstract Number: 0385 • ACR Convergence 2022
T Cell Receptor Sequencing Identifies Two Classes of T Cells Enriched in HLA-B27-associated Inflammation
Background/Purpose: HLA-B27 is genetically linked to Axial Spondyloarthritis (axSpA) and anterior uveitis (AU), an inflammatory ocular disease that can lead to cataract, glaucoma, and permanent…
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