Abstracts tagged "T cells"

Abstract Number: 1745 • 2017 ACR/ARHP Annual Meeting
Autophagic Memory in Stress Experienced Human T Cells
Pavanish Kumar¹, Jorg van Loosdregt², Suzan Saidin¹, Bhairav Paleja¹ and Salvatore Albani¹, ¹SingHealth Translational Immunology and Inflammation Centre (STIIC), Duke-NUS Medical School, Singapore, Singapore, ²Laboratory for Translational immunology, University Medical Center Utrecht, Utrecht, Netherlands
Background/Purpose: Autophagy is central to many key immune related pathways, disregulation of which has been associated with rheumatoid arthritis (RA), cancer and neurodegenerative diseases. Autophagy…
Abstract Number: 2711 • 2017 ACR/ARHP Annual Meeting
Mucosal-Associated Invariant T Cells Are an Important Source of TNF in Rheumatoid Arthritis
Diahann Jansen¹, Elizabeth Klinken¹, Hendrik Nel¹, Soi Cheng Law¹, Hester Koppejan², Marjolijn Hameetman³, Ligong Liu⁴, Alexandra Corbett⁵, Sidonia Eckle⁵, David Fairlie⁴, Rene E.M. Toes⁶, Floris van Gaalen⁷, Jamie Rossjohn^8,9,10, James McCluskey⁵ and Ranjeny Thomas¹, ¹The University of Queensland Diamantina Institute, Translational Research Institute, Woolloongabba, Australia, ²Department of Rheumatology, Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands, ³Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands, ⁴Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia, ⁵Department of Microbiology & Immunology, Peter Doherty Institute for Infection and Immunity, University of Melbourne, Parkville, Australia, ⁶Rheumatology, Leiden University Medical Center, Leiden, Netherlands, ⁷Rheumatology, Department of Rheumatology, Leiden University Medical Center, Leiden, Netherlands, ⁸Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Monash University, Clayton, Australia, ⁹Institute of Infection and Immunity, Cardiff University School of Medicine, Cardiff, United Kingdom, ¹⁰Infection and Immunity Program, Biomedicine Discovery Institute and Department of Biochemistry and Molecular Biology, Monash University, Clayton, Australia
Background/Purpose: CD8+ T cells have been described to comprise up to 40% of the rheumatoid arthritis (RA) synovial T cell compartment but their pathogenic function…
Abstract Number: 393 • 2017 ACR/ARHP Annual Meeting
The Role of Follicular Helper 17 T Cells in Glucose-6-Phosphate Isomerase Induced Arthritis
Izumi Kurata, Isao Matsumoto, Atsumu Osada, Hiroshi Ebe, Hoshimi Kawaguchi, Yuya Kondo, Hiroto Tsuboi and Takayuki Sumida, Department of Internal Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
Background/Purpose: Follicular helper T (Tfh) cell is a novel T cell subset which promotes follicular B cell activation, differentiation to plasma cell and antibody production.…
Abstract Number: 1325 • 2017 ACR/ARHP Annual Meeting
Immune Responses to Peptides Containing Homocitrulline or Citrulline in the DR4-Transgenic Mouse Model of Rheumatoid Arthritis
Patrick Lac¹, Sheri Saunders¹, Elena Tutunea-Fatan¹, Lillian Barra², David Bell³ and Ewa Cairns², ¹Microbiology and Immunology, The University of Western Ontario, London, ON, Canada, ²Medicine, Microbiology and Immunology, The University of Western Ontario, London, ON, Canada, ³Medicine, The University of Western Ontario, London, ON, Canada
Background/Purpose: Antibodies to proteins/peptides containing citrulline (commonly measured using cyclic citrullinated peptide, CCP2) are hallmarks of Rheumatoid Arthritis (RA). These antibodies are strongly associated with…
Abstract Number: 1747 • 2017 ACR/ARHP Annual Meeting
Human C-C Chemokine Receptor-6 (CCR6)+ Th Memory Cells, Including Th17 and Th17.1 Cells, Change into Anti-Inflammatory Cells with Regulatory Capacity upon Exposure to Vitamin D
Wendy Dankers¹, Nadine Davelaar², Jan Piet van Hamburg³, Patrick Asmawidjaja², Hoyan Wen², Johannes van Leeuwen⁴, Edgar Colin⁵ and Erik Lubberts², ¹Rheumatology, Erasmus MC, University Medical Center, Rotterdam, Netherlands, ²Rheumatology and Immunology, Erasmus MC, University Medical Center, Rotterdam, Netherlands, ³Rheumatology, Erasmus MC, Rotterdam, Netherlands, ⁴Internal Medicine, Erasmus MC, University Medical Center, Rotterdam, Netherlands, ⁵ZGT Almelo, Deventer, Netherlands
Background/Purpose: Autoimmune diseases such as RA are driven by an aberrantly activated immune system and an imbalance between pro- and anti-inflammatory cells, resulting in tissue…
Abstract Number: 2714 • 2017 ACR/ARHP Annual Meeting
The Paracaspase MALT1 Plays a Central Role in the Pathogenesis of Rheumatoid Arthritis
Elisabeth Gilis¹, Jens Staal², Rudi Beyaert² and Dirk Elewaut³, ¹Molecular Immunology and Inflammation Unit, VIB Inflammation Research Center, Ghent, Belgium, Gent, Belgium, ²Molecular Immunology and Inflammation Unit, VIB Inflammation Research Center, Ghent, Belgium, ³VIB Inflammation Research Center, University of Ghent, Ghent, Belgium
Background/Purpose: One of the hallmarks of many inflammatory arthritides is their strong linkage with MHC-signalling, which is mirrored by the marked role for adaptive immunity.…
Abstract Number: 642 • 2017 ACR/ARHP Annual Meeting
Downstream Effects of Apremilast in Human Arthritic Ex Vivo Models
Tue Wenzel Kragstrup^1,2, Søren Lomholt², Morten Aagaard Nielsen², Line Dam Heftdal², Peter H. Schafer³ and Bent Deleuran^2,4, ¹Randers Regional Hospital, Randers, Denmark, ²Department of Biomedicine, Aarhus University, Aarhus, Denmark, ³Department of Translational Development, Celgene Corporation, Summit, NJ, ⁴Department of Rheumatology, Aarhus University Hospital, Aarhus, Denmark
Background/Purpose: Apremilast (Otezla) is a PDE4 inhibitor approved for the treatment of psoriasis and psoriatic arthritis, but the mechanisms of action of apremilast are not…
Abstract Number: 1328 • 2017 ACR/ARHP Annual Meeting
A Dual ICOS/CD28 Antagonist ICOSL Variant Ig Domain (vIgDTM) Potently Suppresses Mouse Collagen-Induced Arthritis and Human Xenograft Graft Vs. Host Disease (GvHD)
Stacey Dillon¹, Katherine Lewis¹, Ryan Swanson², Lawrence Evans², Michael Kornacker³, Steve Levin², Martin Wolfson⁴, Erika Rickel², Susan Bort², Sherri Mudri¹, Aaron Moss¹, Michelle Seaberg¹, Janhavi Bhandari⁴, Sean MacNeil⁴, Joe Hoover⁴, Mark Rixon⁴ and Stanford Peng⁵, ¹Translational Sciences, Alpine Immune Sciences, Seattle, WA, ²Immunology, Alpine Immune Sciences, Seattle, WA, ³Protein Engineering, Alpine Immune Sciences, Seattle, WA, ⁴Protein Therapeutics, Alpine Immune Sciences, Seattle, WA, ⁵Clinical, R&D, Alpine Immune Sciences, Seattle, WA
Background/Purpose: Our proprietary variant Ig domain (vIgD) platform creates novel, therapeutically-applicable protein domains with tailored specificity and affinity. These vIgDs are created through directed…
Abstract Number: 1832 • 2017 ACR/ARHP Annual Meeting
Gut Dysbiosis Contributes to Autoimmune Pathogenesis in Lupus-Prone Mice
Seung Chul Choi¹, Josephine Brown¹, Mansour Mohamadzadeh², Byron Croker¹ and Laurence Morel³, ¹Pathology, University of Florida, Gainesville, FL, ²Infectious Diseases & Pathology, University of Florida, Gainesville, FL, ³Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL
Background/Purpose: Multiple studies have demonstrated that commensal bacteria play an immunoregulatory role and that gut dysbiosis is associated with inflammatory diseases. This study was conducted…
Abstract Number: 2740 • 2017 ACR/ARHP Annual Meeting
Cyclophosphamide Treatment Modulates Circulating Cell Populations in Patients with Vasculitis and Autoimmune Systemic Diseases
Martina Skácelová¹, Gabriela Gabčová², Pavel Horak³, Zuzana Mikulková², František Mrázek⁴, Eva Kriegová⁵ and Andrea Smržová⁶, ¹III. Department of Internal Medicine, Faculty of Medicine and Dentistry, Palacký University of Olomouc, Olomouc, Czech Republic, ²Department of Immunology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc, Czech Republic, ³III. Department of internal medicine, III. Department of Internal Medicine, Faculty of Medicine and Dentistry, Palacký University of Olomouc, Olomouc, Czech Republic, ⁴Department of Immunology, Faculty of Medicine and Dentistry, Palacky University of Olomouc, Olomouc, Czech Republic, ⁵Department of Immunology, Department of Immunology, Faculty of Medicine and Dentistry, Palacky University of Olomouc, Olomouc, Czech Republic, ⁶III. Department of Internal Medicine, III. Department of Internal Medicine, Faculty of Medicine and Dentistry, Palacký University of Olomouc, Olomouc, Czech Republic
Background/Purpose: Although cyclophosphamide (CFA) remain the cornerstone for treatment of patients with severe manifestations of systemic autoimmune diseases, the knowledge about the effect of CFA…
Abstract Number: 645 • 2017 ACR/ARHP Annual Meeting
An Oral Tyk2 Inhibitor Effectively Suppresses the Development of Murine Th17 Cells In Vivo and Prevents Joint Damage in Experimental Ankylosing Spondylitis
Eric Gracey^1,2, Melissa Lim², Zoya Qaiyum¹, Yuriy Baglaenko^1,2, Wenyan Miao³, Craig Masse³, William Westlin³ and Robert D Inman^1,4, ¹Department of Immunology, University of Toronto, Toronto, ON, Canada, ²Toronto Western Hospital, University Health Network, Toronto, ON, Canada, ³Nimbus Therapeutics, Cambridge, MA, ⁴Toronto Western Hospital, University Health Network, toronto, ON, Canada
Background/Purpose: Th17 cells play an important role in the pathogenesis of ankylosing spondylitis (AS). Tyk2, a member of the Janus Kinase (JAK) family of signaling…
Abstract Number: 1567 • 2017 ACR/ARHP Annual Meeting
A Mitogen-Associated Protein Kinase (MAPK) Associated Kinase 2 Inhibitor Decreases in Vitro Th17 and Monocyte Inflammatory Responses in Spondyloarthritis
Davide Simone, Hui Shi, Nuha Ansar, Alison Davies, Karen Doig and Paul Bowness, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
Background/Purpose: The current biologic treatment for Ankylosing Spondylitis (AS) and Psoriatic Arthritis (PsA) are limited to TNF-a inhibitors (TNFi) and, more recently, IL-17A monoclonal antibodies.…
Abstract Number: 1911 • 2017 ACR/ARHP Annual Meeting
Impaired Control of Autoreactive T Cell Expansion Is Coupled with Type-1 Regulatory T Cell Deficiency in BALB/c ZAP70W163C Mutant Mice
M. Arifur Rahman¹, Daphne Montizaan², Zaied Ahmed Bhuyan³, Linda Rehaume³ and Ranjeny Thomas⁴, ¹The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, Australia, ²The University of Groningen, Groningen, Netherlands, ³The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, Australia, ⁴Dendright Pty Ltd, Brisbane, Australia
Background/Purpose: In the context of reduced TCR signaling in the BALB/c ZAP70W163C mutant (SKG) mouse, development of arthritis, psoriasis-like skin inflammation and ileitis after intra-peritoneal…
Abstract Number: 2772 • 2017 ACR/ARHP Annual Meeting
Unbound IL-18 Distinguishes Human Macrophage Activation Syndrome from Familial Hemophagocytic Lymphohistiocytosis and Affects Innate Versus Adaptive Murine Lymphocytes Differently
Paul Tsoukas¹, Eric Weiss², Dirk Holzinger³, Charlotte Girard⁴, Dirk Foell⁵, Alexei A. Grom⁶, Sandra Ammann⁷, Stephan Ehl⁷, Eduardo Schiffrin⁸, Adriana Almeida de Jesus⁹, Raphaela Goldbach-Mansky⁹, Cem Gabay¹⁰ and Scott Canna¹¹, ¹Pediatric Rheumatology, Children’s Hospital of Pittsburgh, Pittsburgh, PA, ²RK Mellon Institute, Children’s Hospital of Pittsburgh, Pittsburgh, PA, ³Department of Pediatric Rheumatology and Immunology, University of Muenster, Muenster, Germany, ⁴Division of Rheumatology, Department of Internal Medicine Specialties, University Hospital of Geneva, Geneva, Switzerland, ⁵University of Muenster, Muenster, Germany, ⁶Pediatric Rheumatology, Cincinnati Children’s Hospital, Cincinnati, OH, ⁷Center for Chronic Immunodeficiency, Faculty of Medicine, University of Freiburg, Freiburg, Germany, ⁸AB2 Bio, Lausanne, Switzerland, ⁹Translational Autoinflammatory Disease Studies (TADS), Laboratory of Clinical Investigation and Microbiology (LCIM), NIAID/NIH, Bethesda, MD, ¹⁰SCQM, Geneva, Switzerland, Geneva, Switzerland, ¹¹Richard King Mellon Foundation Institute for Pediatric Research, Children's Hospital of Pittsburgh, Pittsburrgh, PA
Background/Purpose: Persistently and extremely elevated serum IL-18 has been associated with Macrophage Activation Syndrome (MAS). Chronic IL-18 is hypothesized to contribute to excessive interferon (IFN)-g…
Abstract Number: 658 • 2017 ACR/ARHP Annual Meeting
Functionally Active MAIT Cells in Psoriatic Arthritis: A New Member of the IL-23/IL-17 Cytokine Network
Siba P. Raychaudhuri¹ and Smriti K. Raychaudhuri², ¹Rheumatology Section, Sacramento Veterans Affairs Medical Center, Sacramento, CA, ²Rheumatology/Immunology, VA Sacramento Medical Center, Davis, CA
Background/Purpose: The mucosal-associated invariant T (MAIT) cells recently have been implicated in autoimmune diseases. Murine model experiments also suggest that MAIT cells are capable…

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