Abstract Number: 1006 • ACR Convergence 2021
MAA Modified and/or Citrullinated Proteins Stimulate Macrophages and Human Fibroblast-Like Synoviocytes to Increase the Secretion/Expression of Fractalkine Ligand (CX3CL1) and Fractalkine Receptor (CX3CR1)
Background/Purpose: In rheumatoid arthritis (RA) synovium, activated synovial fibroblasts and macrophages release inflammatory mediators that affect surrounding cells and accelerate disease progression. One such chemokine…Abstract Number: 0013 • ACR Convergence 2021
Cyclin Dependent Kinase 4 and 6 Determine the Cytokine Responsiveness by Stabilizing JUN in Rheumatoid Arthritis Synovial Fibroblasts
Background/Purpose: Although current inflammation-targeted therapy improved the outcome of patients with rheumatoid arthritis (RA), the achievement of complete disease remission was still challenging. Since synovial…Abstract Number: 1012 • ACR Convergence 2021
Altered T Cell Responses, and Synergistic Regulation of Synovial Fibroblasts Function in Children with Down’s Syndrome-Associated Arthritis
Background/Purpose: Juvenile idiopathic arthritis (JIA) was thought to be the most common inflammatory arthritis in children. However an aggressive, erosive arthritis of little-known immunologic mechanism…Abstract Number: 0018 • ACR Convergence 2021
Caspase-8 Variant G Regulates Rheumatoid Arthritis Fibroblast-Like Synoviocyte Aggressive Behavior
Background/Purpose: Rheumatoid arthritis (RA) fibroblast-like synoviocytes (FLS) display an aggressive phenotype, including abnormal migration and invasion. Using data from our previous studies defining the epigenetic…Abstract Number: 1092 • ACR Convergence 2021
Altered Metabolic Pathways in Synovial Fibroblasts of Individuals at Risk of Developing Rheumatoid Arthritis
Background/Purpose: Cellular metabolism has been studied in fibroblast-like synoviocytes (FLS) of rheumatoid arthritis (RA) and osteoarthritis (OA) patients and raises the question whether observed metabolic…Abstract Number: 0020 • ACR Convergence 2021
Citrullination Drives the Expression of Pro-fibrotic Genes in Rheumatoid Arthritis Fibroblast-like Cells
Background/Purpose: The pathophysiology of rheumatoid arthritis (RA) is hallmarked by joint inflammation, thickening of the pannus, and resultant joint destruction. Within the synovial tissue, citrullinated…Abstract Number: 1249 • ACR Convergence 2021
In Rheumatoid Arthritis, Inhibition of the Lactate Monocarboxylate Transporters-1, and -4 in Pathological Fibroblast-Like Synoviocytes Led to Decreased ChemokineProduction
Background/Purpose: Pathological subsets of fibroblast-like synoviocytes (FLS) have recently been identified as key players in the aggravation of both persistent joint inflammation and destruction in…Abstract Number: 0024 • ACR Convergence 2021
Heterogeneity of Inflammatory HLA-DR+ Synovial Fibroblasts in Rheumatoid Arthritis Is Driven by Responses to Leukocyte-Derived Cytokines
Background/Purpose: Treatment-refractory rheumatoid arthritis (RA) represents a major unmet need with substantial societal burden. Targeting RA-associated fibroblast-like synoviocytes (FLS) may provide a less-immunosuppressive therapeutic option.…Abstract Number: 1476 • ACR Convergence 2021
Metabolic Reprogramming: Inhibiting Osteoarthritis-induced Expression of the Pyruvate Dehydrogenase Kinase Preserves Mitochondrial Respiration
Background/Purpose: Osteoarthritis (OA) is the most common degenerative joint disease worldwide, traditionally classified as non-inflammatory. Recently, attention has been drawn to the importance of synovitis…Abstract Number: 0026 • ACR Convergence 2021
Synovial Fibroblasts Acquire a Proinflammatory and Destructive Phenotype After Exposure to αS1-Casein (CSN1S1)
Background/Purpose: The milk protein αS1-Casein (CSN1S1) was described to be overexpressed in synovial tissue of patients with rheumatoid arthritis (RA) and osteoarthritis (OA). Recently we…Abstract Number: 1927 • ACR Convergence 2021
Heterogeneity of Juvenile Idiopathic Arthritis Synovial Fibroblasts Correlates to Disease Progression and Provides Compelling Diagnostic Data
Background/Purpose: Juvenile Idiopathic Arthritis (JIA) induces growth disturbances in affected joints. Fibroblast-like synoviocytes (FLS) play a crucial role in JIA pathogenesis; however, the mechanisms by…Abstract Number: 0035 • ACR Convergence 2021
Bromodomain Protein-regulated Stress Response in Rheumatoid Arthritis Synovial Fibroblasts
Background/Purpose: Hypoxia and subsequent oxidative stress are early events in the RA joint and contribute to the activation of synovial fibroblasts (SF). Small molecule inhibitors…Abstract Number: 0041 • ACR Convergence 2021
Vascularized ‘Synovium-on-a-Chip’ – A Novel and Adaptable Model for Dissecting Inflammatory Biology Underlying Rheumatoid Arthritis
Background/Purpose: Rheumatoid arthritis (RA) is a common multisystem inflammatory condition, affecting approximately 1% of the world population. The mechanisms underlying RA are still incompletely defined…Abstract Number: 0458 • ACR Convergence 2021
Single Cell Profiling Reveals a Wnt-mediated Transcriptional Gradient That Drives Inflammation in Rheumatoid Arthritis Synovial Fibroblast Pathology
Background/Purpose: Synovial fibroblasts are key inflammatory aggressors in rheumatoid arthritis (RA) that mediate cartilage and bone destruction, yet therapies directly targeting these cells are lacking.…Abstract Number: 0508 • ACR Convergence 2021
The Impact of Macrophages Stimulated with Malondialdehyde-Acetaldehyde And/or Citrulline Modified Proteins on Fibroblasts Activation
Background/Purpose: In rheumatoid arthritis (RA), chronic synovial inflammation is accompanied by fibrotic responses that together lead to pannus formation and progressive joint damage. Exposure to…
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