Abstracts tagged "T Cell"

Abstract Number: 1730 • ACR Convergence 2022
T Cell-Macrophage Interactions Play a Critical Role in a Mouse Model of Histidyl-tRNA Synthetase-Induced Myositis
Daniel Reay¹, Ying Wang², Wael Jarjour³, Paula Clemens¹ and Dana Ascherman⁴, ¹University of Pittsburgh School of Medicine, Pittsburgh, PA, ²University of Miami Miller School of Medicine, Miami, FL, ³The Ohio State University, Columbus, OH, ⁴University of Pittsburgh, Pittsburgh, PA
Background/Purpose: Histidyl-tRNA synthetase (HRS) is a key target of antigen-specific B and T cell responses in the anti-synthetase syndrome. Despite a clear role for aberrant…
Abstract Number: 1982 • ACR Convergence 2022
Pluripotency Marker PBX1 Predicts Treatment Effect in Rheumatoid Arthritis
Karin Andersson¹, Eric Malmhäll-Bah², Nina Oparina¹, Tao Weiyang³, Malin Erlandsson¹, Venkataragavan Chandrasekaran², Aridaman Pandit³, Sofia Töyrä Silfverswärd⁴, Maria Bokarewa⁴ and Rille pullerits⁴, ¹Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Goteborg, Sweden, ²Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden, ³Center for Translational Immunology, University Medical Center, Utrecht, Netherlands, ⁴Department of Rheumatology and Inflammation Research, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Göteborg, Sweden
Background/Purpose: Self-renewal ability, which is important for the adaptive immunity and adequate T cell function, is severely impaired in rheumatoid arthritis (RA). This leads to…
Abstract Number: 0506 • ACR Convergence 2022
Immunophenotypic Categorization of Systemic Immune-mediated Diseases
Shinji Izuka¹, Toshihiko Komai¹, Takahiro Itamiya¹, Mineto Ota², Saeko Yamada¹, Yasuo Nagafuchi², Hirofumi Shoda¹, Kosuke Matsuki³, Kazuhiko Yamamoto⁴, Tomohisa Okamura² and Keishi Fujio¹, ¹Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, Bunkyo City, Tokyo, Japan, ²Department of Allergy and Rheumatology, Graduate School of Medicine, The University of Tokyo, Department of Functional Genomics and Immunological Diseases, Graduate School of Medicine, The University of Tokyo, Bunkyo City, Tokyo, Japan, ³Research Division, Chugai Pharmaceutical Co., Ltd., Kamakura, Japan, ⁴Laboratory for Autoimmune Diseases, Center for Integrative Medical Sciences, the Institute of Physical and Chemical Research (RIKEN), Wako, Saitama, Japan
Background/Purpose: Systemic immune-mediated diseases are heterogeneous, and the pathogenesis varies among and within each disease. Some studies tried to stratify patients with immune-mediated diseases into…
Abstract Number: 1124 • ACR Convergence 2022
CD4+ Cytotoxic T Lymphocytes (CTL) Are Present in Sjögren’s Disease Minor Salivary Glands and Associate with Markers of Epithelial Cell Damage near Infiltrates
Michelle Joachims¹, Chuang Li¹, Joshua Rusbuldt², Ben Fowler¹, Astrid Rasmussen¹, Kiely Grundahl¹, R. Hal Scofield³, Kathy Sivils⁴, Christopher Lessard¹ and A. Darise Farris¹, ¹Oklahoma Medical Research Foundation, Oklahoma City, OK, ²Janssen Pharmaceutical Companies of Johnson & Johnson, Spring House, PA, ³University of Oklahoma Health Sciences Center, Oklahoma City, OK, ⁴Janssen Research and Development, LLC, Spring House, PA
Background/Purpose: CD4+ T cells dominate focal lymphocytic infiltrates in Sjögren's disease (SjD), but their differentiation states have remained unclear. Here, we used single cell (sc)RNAseq…
Abstract Number: 1731 • ACR Convergence 2022
Systemic Sclerosis-Associated Class II HLA Alleles Restrict the Diversity of the CDR3 and the T Cell Receptor Repertoire in African American Patients
Urvashi Kaundal¹, Chloe Borden¹, Cihan Oguz², Jinghua Lu², Emilee Stenson¹, Ami Shah³, Maureen Mayes⁴, Ayo Doumatey⁵, Amy Bentley⁵, Daniel Shriner⁵, Robyn Domsic⁶, Thomas Medsger⁷, Paula Ramos⁸, Richard Silver⁸, Virginia Steen⁹, John Varga¹⁰, Vivien Hsu¹¹, Lesley Ann Saketkoo¹², Elena Schiopu¹³, Dinesh Khanna¹⁴, Jessica Gordon¹⁵, Lindsey Criswell¹⁶, Heather Gladue¹⁷, Chris Derk¹⁸, Elana Bernstein¹⁹, S. Louis Bridges, Jr.¹⁵, Victoria Shanmugam²⁰, Lorinda Chung²¹, Suzanne Kafaja²², Reem Jan²³, Marcin Trojanowski²⁴, Avram Goldberg²⁵, Benjamin Korman²⁶, Settara Chandrasekharappa⁵, Faiza Naz²⁷, Stefania Dell'Orso¹, Adebowale Adeyemo⁵, Charles Rotimi⁵, Elaine Remmers⁵, Francesco Boin²⁸, Fredrick Wigley²⁹, Peter Sun², Daniel Kastner⁵ and Pravitt Gourh³⁰, ¹National Institutes of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Bethesda, MD, ²National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, ³Johns Hopkins Rheumatology, Baltimore, MD, ⁴Division of Rheumatology and Clinical Immunogenetics, University of Texas McGovern Medical School, Houston, TX, ⁵National Human Genome Research Institute, Bethesda, MD, ⁶University of Pittsburgh, Pittsburgh, PA, ⁷University of Pittsburgh School of Medicine, Pittsburgh, PA, ⁸Medical University of South Carolina, Charleston, SC, ⁹Georgetown University School of Medicine, Washington, DC, ¹⁰University of Michigan, Ann Arbor, MI, ¹¹Rutgers-RWJ Medical School, South Plainfield, NJ, ¹²University Medical Center - Comprehensive Pulmonary Hypertension Center and ILD Clinic Programs // New Orleans Scleroderma and Sarcoidosis Patient Care & Research Centeris, New Orleans, LA, ¹³Michigan Medicine, Ann Arbor, MI, ¹⁴Division of Rheumatology, Department of Internal Medicine, Scleroderma Program, University of Michigan, Ann Arbor, MI, ¹⁵Hospital for Special Surgery, New York, NY, ¹⁶National Human Genome Research Institute, NIH, Bethesda, MD, ¹⁷Arthritis & Osteoporosis Consultants of the Carolinas, Charlotte, NC, ¹⁸University of Pennsylvania, Philadelphia, PA, ¹⁹Columbia University, New York, NY, ²⁰George Washington University, Great Falls, VA, ²¹Stanford University, Stanford, CA, ²²UCLA Department of Medicine, Division of Rheumatology, Los Angeles, CA, ²³University of Chicago, Chicago, IL, ²⁴Boston University School of Medicine, Boston, MA, ²⁵NYU Langone Medical Center - NYU Hospital for Joint Diseases, Lake Success, NY, ²⁶University of Rochester, Rochester, NY, ²⁷National Institute of Arthritis and Musculoskeletal and Skin Diseases, Bethesda, MD, ²⁸Cedars-Sinai Medical Center, Los Angeles, CA, ²⁹Johns Hopkins University, Baltimore, MD, ³⁰National Institutes of Health, Bethesda, MD
Background/Purpose: Systemic sclerosis (SSc) is an autoimmune, fibrotic disorder that disproportionately affects African Americans (AA). Previous work from our lab and others has suggested a…
Abstract Number: 1991 • ACR Convergence 2022
Mice Do Not Develop CIA: Knocking out of Kv1.3 Renders CD4+TEMCells Resistant to Activation
Siba Raychaudhuri¹, Smriti Raychaudhuri² and Heike Wulff³, ¹UC Davis, School of Medicine/ VA Medical Center, Sacramento, CA, ²VA Medical Center, Sacramento, CA, ³UC Davis, Davis, CA
Background/Purpose: Engagement of the TCR triggers Ca++ influx through Ca++ channels. Ca++ influx is only possible with a counterbalancing K+ efflux through Kv1.3 and/or KCa3.1.…
Abstract Number: 0555 • ACR Convergence 2022
Heterogeneity in Origin and Function of Distinct Human Synovial-tissue Dendritic Cells in Health, Active Rheumatoid Arthritis (RA) and RA in Disease Remission
Aziza Elmesmari¹, Lucy MacDonald², Jack Frew², Domenico Somma², Clara Di Mario³, Audrey Paoletti⁴, Diane Vaughan⁵, Barbara Tolusso⁶, Simone Perniola⁶, Marco Gessi⁷, Leandro Lemgruber⁵, Maria Rita Gigante⁸, Luca P Petricca⁹, Laura Bui⁷, Dario Bruno³, charles McSharry⁵, John D Isaacs¹⁰, Iain B McInnes¹¹, Simon Milling⁵, Elisa Gremese³, Thomas D Otto², Kenneth Baker¹², Stefano Alivernini⁶ and Mariola Kurowska-Stolarska¹, ¹Research into Inflammatory Arthritis Centre Versus Arthritis (RACE), University of Glasgow, Glasgow, Scotland, United Kingdom, ²Research into Inflammatory Arthritis Centre Versus Arthritis (RACE), University of Glasgow, Glasgow, Scotland, United Kingdom, ³Immunology Research Core Facility, Gemelli Science and Technology Park, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy, ⁴University of Glasgow, Glasgow, Scotland, United Kingdom, ⁵Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, Scotland, United Kingdom, ⁶Immunology Research Core Facility, Gemelli Science and Technology Park, Fondazione Policlinico Universitario A. Gemelli IRCCS,, Rome, Italy, ⁷Institute of Pathology, Fondazione Policlinico Universitario A. Gemelli IRCCS,, Rome, Italy, ⁸Division of Rheumatology, Fondazione Policlinico Universitario A. Gemelli IRCCS,, Rome, United Kingdom, ⁹Division of Rheumatology, Fondazione Policlinico Universitario A. Gemelli IRCCS,, Rome, Italy, ¹⁰Institute for Translational and Clinical Research, Newcastle University and Musculoskeletal Unit, Newcastle upon Tyne Hospitals, Newcastle upon Tyne, United Kingdom, ¹¹Institute of Infection, Immunity and Inflammation, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, Scotland, United Kingdom, ¹²Institute for Translational and Clinical Research, Newcastle University and Musculoskeletal Unit, Newcastle upon Tyne Hospitals, Newcastle, United Kingdom
Background/Purpose: Current treatments for RA do not restore the immune tolerance characteristic of health. Dendritic cells (DC) are one of the cell types that can…
Abstract Number: 1146 • ACR Convergence 2022
Genetic Interactions Between T-Cell Receptor Polymorphisms and HLA Amino Acids Contribute to the Risk of Rheumatoid Arthritis
Chuan Fu Yap¹, Paul Martin², Darren Plant¹, John Bowes¹, Kazuyoshi Ishigaki³, Saori Sakaue⁴, Alex Macgregor⁵, Suzanne Verstappen¹, Anne Barton¹, Soumya Raychaudhuri⁶ and Sebastien Viatte¹, ¹The University of Manchester, Manchester, United Kingdom, ²The University of Manchester, Oberhaching, Germany, ³Riken, Bunkyo-ku, Tokyo, Japan, ⁴Broad Institute of Harvard and MIT, Cambridge, MA, ⁵The University of East Anglia, Norwich, United Kingdom, ⁶Brigham and Women's Hospital, Boston, MA
Background/Purpose: Rheumatoid arthritis (RA) genetic susceptibility has been well studied with five amino acid positions within the HLA explaining most of the association. Although genome…
Abstract Number: 1732 • ACR Convergence 2022
Novel Human Class II MHC Tetramers Detect Rare, Self-Reactive CD4+ T Cells Relevant to Mixed Connective Tissue Disease
Shawn Mahmud, Thamotharampillai Dileepan, Bryce Binstadt and Marc Jenkins, University of Minnesota, Minneapolis, MN
Background/Purpose: Nearly all patients with mixed connective tissue disease (MCTD) have IgG autoantibodies (autoAb) specific for U170k, a component of the U1-snNRP spliceosomal complex. A…
Abstract Number: 2027 • ACR Convergence 2022
Labial and Parotid Salivary Gland Histopathology in Primary Sjögren’s Syndrome
Uzma Nakshbandi¹, Martha S. van Ginkel¹, Silvia Liefers², Hendrika Bootsma², Fred Spijkervet², Arjan Vissink¹, Bert van der Vegt¹ and Frans Kroese², ¹University Medical Center Groningen, University of Groningen, Groningen, Netherlands, ²University Medical Center Groningen, Groningen, Netherlands
Background/Purpose: Salivary gland involvement is a hallmark of disease in primary Sjögren's syndrome (pSS). This is reflected by the prominent role of a positive biopsy…
Abstract Number: 0566 • ACR Convergence 2022
SARS-CoV-2-Specific T Cell Responses in Multisystem Inflammatory Syndrome in Children
Ki Pui Lam¹, Marcos H. Chinas², Amélie M. Julé², Maria Taylor³, Mary Beth F. Son¹, Janet Chou², Jane W. Newburger⁴, Adrienne G. Randolph⁵, Maria Gutierrez-Arcelus² and lauren henderson¹, ¹Division of Immunology, Boston Children's Hospital, Boston, MA, ²Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, ³Division of Immunology, Boston Children's Hospital, Brighton, MA, ⁴Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, MA, ⁵Division of Critical Care Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA
Background/Purpose: Multisystem inflammatory syndrome in children (MIS-C) develops about a month after SARS-CoV-2 infection and this delayed presentation suggests a role for the adaptive immune…
Abstract Number: 1164 • ACR Convergence 2022
Expanded CD8+ T Cell Clones from HLA-B*27-positive Patients with Spondyloarthritis Show Signs of Antigen-experience
Judith Rademacher¹, Katharina Deschler², Sonja Lacher², Alina Huth², Markus Utzt², Stefan Krebs², Helmut Blum², Eduardo Beltrán², Klaus Dornmair² and Denis Poddubnyy³, ¹Charité Universitätsmedizin Berlin, Berlin, Germany, ²Laboratory for Functional Genome Analysis (LAFUGA), Gene Center of the LMU Munich, Munich, Germany, ³Department of Gastroenterology, Infectious Diseases and Rheumatology, Charité – Universitätsmedizin Berlin, Berlin, Germany
Background/Purpose: Spondyloarthritis (SpA) is strongly associated with HLA-B27. The arthritogenic antigen hypothesis assumes the existence of specific peptides presented by risk-conferring HLA-B27 alleles to antigen-specific…
Abstract Number: 1733 • ACR Convergence 2022
Granzyme K Elicits a New Pathway for Complement Activation in RA Synovium
Anna Jonsson¹, Carlos Donado², Emma Gomez-Rivas¹ and Michael Brenner³, ¹Brigham and Women's Hospital, Boston, MA, ²Brigham and Women's Hospital and Harvard Medical School, Boston, MA, ³Brigham and Women's Hospital, Harvard Medical School, Boston, MA
Background/Purpose: T cells are major drivers of rheumatoid arthritis (RA) pathogenesis. Most research has focused on CD4 T cells, but we have found that CD8+…
Abstract Number: 2037 • ACR Convergence 2022
Childhood-onset Sjögren’s Syndrome Is Characterised by Dysregulated of B and T Memory Cell Frequencies: A Pilot Immunophenotyping Analysis of This Rare Disease Phenotype
Lucia Martin-Gutierrez¹, Hannah Peckham², Anna Radziszewska², Junjie Peng², Oluwatomisin Nettey², Elizabeth Jury³ and Coziana Ciurtin⁴, ¹Centre for Rheumatology Research, Department of Medicine,University College London, London, ²Centre for Adolescent Rheumatology Versus Arthritis, Department of Medicine, University College London, London, ³University College London, London, United Kingdom, ⁴Centre for Adolescent Rheumatology Versus Arthritis, Department of Medicine, University College London, London, United Kingdom
Background/Purpose: Sjögren's syndrome (SS) is an autoimmune rheumatic disease characterised by dryness resulting from chronic lymphocytic infiltration of the exocrine glands and extra glandular manifestations…
Abstract Number: 0569 • ACR Convergence 2022
Cytokine Storm Susceptibility Factors IL-18 and Cytotoxic Impairment Converge on Pathologic CD8 T-cell Hyperactivation
Emily Landy¹, Scott Canna², Paul Tsoukas³, Vinh Dang² and Jemy Varghese², ¹University of Pittsburgh, Pittsburgh, PA, ²Children's Hospital of Philadelphia, Philadelphia, PA, ³The Hospital for Sick Children, Toronto, ON, Canada
Background/Purpose: Mounting evidence suggests partial defects in cytotoxicity-related genes may promote hyperinflammation in Macrophage Activation Syndrome (MAS) patients, who uniformly have highly-elevated IL-18. In mice,…

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