Abstracts tagged "T Cell"

Abstract Number: 1511 • ACR Convergence 2021
Investigation of Antigen Specific CD4+ T Cells in Patients with Idiopathic Inflammatory Myopathies
Begum Horuluoglu¹, Angeles Shunashy Galindo-Feria², Karine Chemin³, Genadiy Kozhukh⁴, Anatoly Dubnovitsky⁴, Vivianne Malmström⁵ and Ingrid E Lundberg⁶, ¹Karolinska Institutet, Stockholm, Sweden, ²Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden, ³Division of Rheumatology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden, ⁴Science for Life Laboratory, Karolinska Institutet, Stockholm, Sweden, ⁵Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden, ⁶Karolinska Institutet, Karolinska University Hospital, Division of Rheumatology, Department of Medicine Solna, Stockholm, Sweden, Stockholm, Sweden
Background/Purpose: Idiopathic inflammatory myopathies (IIM) also known as myositis, are rare chronic autoimmune disorders represented by lesions in muscle, skin and lung. One of the…
Abstract Number: 0066 • ACR Convergence 2021
Characterization of αβTCR of HLA-B*27-Restricted CD8 T-Cell Clones Associated with Spondyloarthropathies
Jose Garrido-Mesa¹, Nicholas Harvey², Aimee Hanson³, Tony Kenna⁴, Chi Wong⁵, Charles Bridgewood⁵, Dennis McGonagle⁵ and Matthew Brown¹, ¹King's College London, London, United Kingdom, ²Molecular Genetics, London, United Kingdom, ³University of Queensland, Brisbane, Australia, ⁴Queensland University of Technology, School of Biomedical Sciences, Brisbane, Australia, ⁵University of Leeds, Leeds, United Kingdom
Background/Purpose: The mechanism by which HLA-B27 induces Ankylosing Spondylitis (AS) and related disease is unknown, but a leading hypothesis is that it presents ‘arthritogenic epitopes’…
Abstract Number: 1512 • ACR Convergence 2021
Epigenetic and Transcriptional Programs of CD4+ T Cell Anergy
Philip Titcombe, Milagros Silva Morales and Daniel Mueller, University of Minnesota, Minneapolis, MN
Background/Purpose: T cell tolerance is essential for preventing autoimmune diseases and resolving inflammation. To maintain tolerance, CD4+ T cells recognizing self-antigens in the periphery can…
Abstract Number: 0322 • ACR Convergence 2021
Histopathological Changes in Parotid and Labial Salivary Gland Tissue in Primary Sjögren’s Syndrome Patients After Abatacept Treatment
Uzma Nakshbandi¹, Liseth de Wolff², Frans Kroese¹, Silvia Liefers³, Neelanjana Ray⁴, Gwenny Verstappen¹, Fred Spijkervet³, Marleen Nys⁵, Arjan Vissink⁶, Robert Wong⁷, Bert van der vegt³ and Hendrika Bootsma¹, ¹University Medical Center Groningen, Groningen, Netherlands, ²University Medical Centre Groningen, Groningen, Netherlands, ³University of Groningen, University Medical Center Groningen, Groningen, Netherlands, ⁴Bristol-Myers Squibb Company, Lawrenceville, GA, ⁵Bristol Myers Squibb, Braine-l'Alleud, Belgium, ⁶University of Groningen, University Medical Center Groningen, Leek, Netherlands, ⁷Bristol Myers Squibb, Basking Ridge, NJ
Background/Purpose: In a previous open-label phase II study, we showed that abatacept treatment might inhibit local formation of autoreactive memory B cells in parotid glands…
Abstract Number: 1513 • ACR Convergence 2021
Control of T Cell Tolerance by the NR4A Family of Nuclear Receptors
Ryosuke Hiwa¹, Hailyn Nielsen¹, James Mueller¹ and Julie Zikherman², ¹University of California San Francisco, San Francisco, CA, ²UCSF Medical Center, San Francisco, CA
Background/Purpose: Current therapies for autoimmune disease often lead to treatment-limiting immunosuppression. Selective manipulation of antigen (Ag)-specific immune responses could enhance our therapeutic approach. Targeting members…
Abstract Number: 0547 • ACR Convergence 2021
Autologous Haematopoietic Stem Cell Transplantation for Systemic Sclerosis Results in Sustained Changes in Immunoregulatory T and NK Cells
Ross Penglase, Malini Visweswaran, John Zaunders, Laila Girgis, David Ma and John Moore, St Vincent's Hospital, Sydney, Australia
Background/Purpose: Autologous Haematopoietic Stem Cell Transplantation (AHSCT) is an effective treatment for severe systemic sclerosis (SSc). To date, mechanistic studies have indicated possible pro-regulatory and…
Abstract Number: 1514 • ACR Convergence 2021
Age-related Metabolic Reprogramming of Memory CD4+ T Cells Is Associated with Reactive Oxygen Species-induced Immune Cell Dysfunction
Yuling Chen¹, Pierre-Louis Krau², Pelle Löwe³, Moritz Pfeiffenberger⁴, Lisa Ehlers³, Alexandra Damerau⁴, Paula Hoff³, Frank Buttgereit⁵ and Timo Gaber⁴, ¹Charité University Medicine Berlin, Berlin, Germany, ²Charit Universittsmedizin Berlin, corporate member of Freie Universitt Berlin, Humboldt-Universitt zu Berlin, and Berlin Institute of Health, Department of Rheumatology and Clinical Immunology, Berlin, Germany, ³Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Department of Rheumatology and Clinical Immunology, Berlin, Germany, ⁴Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany, ⁵Charité – Universitätsmedizin Berlin, Berlin, Germany
Background/Purpose: Inflamm-aging is a sterile, low-grade, chronic systemic inflammatory state characterized by an increase in proinflammatory cytokines involved in the development of most age-related diseases…
Abstract Number: 0692 • ACR Convergence 2021
Immunophenotyping of Inclusion Body Myositis Blood T Cells: Pathogenic and Biomarker Implications
Namita Goyal¹, Jonathan Cauchi¹, Tyler Irani¹, Nadia Araujo¹, Leo Wang², Marie Wencel¹, Vivian Li³, Steven Greenberg⁴ and Tahseen Mozaffar¹, ¹University of California Irvine, Irvine, CA, ²University of Washington, Seattle, WA, ³University of California, Irvine, CA, ⁴Brigham and Women's Hospital Department of Neurology, Boston, MA
Background/Purpose: The recent discovery of highly differentiated, killer cell lectin-like receptor subfamily G member 1 (KLRG1)+ T cells in the muscle of inclusion body myositis…
Abstract Number: 1750 • ACR Convergence 2021
Itolizumab, a Novel anti-CD6 Therapy, in Systemic Lupus Erythematosus Patients: Interim Safety Results from the Phase 1b EQUALISE Dose-escalation Study
Kenneth Kalunian¹, Richard Furie², Jai Radhakrishnan³, Vandana Mathur⁴, Krishna Polu⁴, Stephen Connelly⁴, Joel Rothman⁴, Cherie Ng⁴, Leslie Chinn⁵, Maple Fung⁶, Dolca Thomas⁷ and Chaim Putterman⁸, ¹UC San Diego, La Jolla, CA, ²Zucker School of Medicine at Hofstra/Northwell, Great Neck, NY, ³Columbia University, New York, NY, ⁴Equillium, Inc., La Jolla, CA, ⁵Equillium, Inc., South San Francisco, CA, ⁶Equillium, Inc., San Diego, CA, ⁷Equillium, Inc., Brooklyn, NY, ⁸Albert Einstein College of Medicine, Bronx, NY
Background/Purpose: CD6, a co-stimulatory receptor predominantly expressed on T cells, promotes CD4+ T cell proliferation and differentiation into Th1/Th17 cells. The CD6 ligand, activated leukocyte…
Abstract Number: 0693 • ACR Convergence 2021
Discovery of Antigen Specific CD4+ T Cells in Anti-HMGCR-positive Immune Mediated Necrotizing Myopathy
Eleni Tiniakou¹, Andrew Mammen² and Erika Darrah¹, ¹Johns Hopkins University, Baltimore, MD, ²National Institutes of Health, Bethesda, MD
Background/Purpose: Anti-3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGCR)-positive immune mediated necrotizing myopathy (anti-HMGCR+ IMNM) is a unique myopathy characterized by IgG autoantibodies against HMGCR and a strong…
Abstract Number: 0947 • ACR Convergence 2021
Cytokine Competent Gut-joint Migratory T Cells Contribute to Inflammation in the Joint
Adam Lefferts¹, David Claypool¹, Eric Norman¹, Uma Kantheti¹ and Kristine Kuhn², ¹University of Colorado, Anschutz Medical Campus, Aurora, CO, ²University of Colorado Anschutz Medical Campus, Aurora, CO
Background/Purpose: Although studies have identified the presence of gut-associated cells in the enthesis of joints affected by spondyloarthritis, a direct link through cellular transit between…
Abstract Number: 0966 • ACR Convergence 2021
Integrated Single Cell RNA-Sequencing Analysis of Tissue-Localized T Cells in Cutaneous Lupus and Lupus Nephritis
Garett Dunlap¹, Allison Billi², Feiyang Ma³, Johann Gudjonsson², J. Michelle Kahlenberg⁴ and Deepak Rao⁵, ¹Harvard University, Somerville, MA, ²Department of Dermatology, University of Michigan, Ann Arbor, MI, ³University of California Los Angeles, Los Angelas, CA, ⁴University of Michigan, Ann Arbor, MI, ⁵Brigham and Women's Hospital, Boston, MA
Background/Purpose: Cutaneous lupus erythematosus (CLE) is commonly present in patients with systemic lupus erythematosus (SLE), but can also exist as an isolated manifestation without further…
Abstract Number: 0967 • ACR Convergence 2021
Antigen-specific and Bystander Autoreactive T Cell Control in Peripheral Blood of ACPA+ Rheumatoid Arthritis Patients Administered Antigen-specific Tolerising Immunotherapy
Pascale Wehr¹, Ranjeny Thomas², Nishta Ramnoruth³, Swati Patel³, Jamie Rossjohn⁴ and Hugh Reid⁴, ¹University of Queensland Diamantina Institute, Brisbane, Australia, ²University of Queensland, Diamantina Institute, Brisbane, Australia, ³University Of Queensland, Brisbane, Australia, ⁴Monash University, Melbourne, Australia
Background/Purpose: The control of autoreactive T cells in an antigen-specific manner in autoimmune diseases is a major clinical research goal. Various regulatory immune signatures have…
Abstract Number: 0968 • ACR Convergence 2021
Granzyme K+ CD8 T Cells Form the Core Population of Inflamed Human Tissue-associated CD8 T Cells
Anna Helena Jonsson¹, Fan Zhang², Emma Gomez-Rivas¹, Gerald Watts¹, Garett Dunlap³, Heather Faust¹, Karishma Rupani¹, Joseph Mears¹, Deepak Rao¹, Runci Wang⁴, Gregory Keras¹, Nida Meednu⁵, Jonathan Coblyn¹, Elena Massarotti¹, Derrick Todd¹, Andrew McDavid⁶, Jennifer Anolik⁵, Accelerating Medicines Partnership AMP: RA/SLE Network⁷, Kevin Wei¹, Soumya Raychaudhuri¹ and Michael Brenner⁸, ¹Brigham and Women's Hospital, Boston, MA, ²Harvard Medical School, Boston, MA, ³Harvard University, Somerville, MA, ⁴Brigham and Women’s Hospital, Boston, MA, ⁵University of Rochester Medical center, Rochester, NY, ⁶University of Rochester, Rochester, NY, ⁷NIH/FNIH, Bethesda, MD, ⁸Brigham and Women's Hospital, Harvard Medical School, Newton, MA
Background/Purpose: T cell-derived pro-inflammatory cytokines are a major driver of rheumatoid arthritis (RA) pathogenesis. While CD4 T cells have traditionally been assumed to be the…
Abstract Number: 1009 • ACR Convergence 2021
Expanded B Cell-Helper T Cells in ANA+ Oligoarticular Juvenile Idiopathic Arthritis
Amelie Jule¹, Maria Taylor², Kacie Hoyt³, Kevin Wei⁴, Maria Gutierrez-Arcelus¹, Siobhan Case¹, Mia Chandler¹, Margaret Chang², Ezra Cohen¹, Fatma Dedeoglu¹, Olha Halyabar¹, Jonathan Hausmann⁵, Melissa Hazen¹, Erin Janssen¹, Jeffrey Lo², Mindy Lo¹, Esra Meidan², Jordan Roberts¹, Mary Beth Son¹, Robert Sundel², Pui Lee⁶, Talal Chatila¹, Peter Nigrovic¹, Deepak Rao⁴ and Lauren Henderson⁷, ¹Boston Children's Hospital, Boston, MA, ²Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, ³Virginia Tech Carilion School of Medicine, Roanoke, VA, ⁴Brigham and Women's Hospital, Boston, MA, ⁵Beth Israel Deaconess Medical Center, Boston, MA, ⁶Boston Children's Hospital, Newton, MA, ⁷Division of Genetics and Genomics, Boston Children’s Hospital, Harvard Medical School, Boston, MA
Background/Purpose: Oligoarticular juvenile idiopathic arthritis (oligo JIA) is defined by limited joint involvement (< 5 joints) in the first 6 months of disease. A subgroup…

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