Abstracts tagged "T cells"

Abstract Number: 0969 • ACR Convergence 2021
Loss of Balance Between Protective and Pro-inflammatory Synovial Tissue T Cell Polyfunctionality Predates Clinical Onset of Rheumatoid Arthritis
Achilleas Floudas¹, Nuno Neto², Carl Orr³, Mary Canavan⁴, Phil Gallagher³, Conor Hurson⁵, Michael Monaghan², Nagpar Sunil⁶, Ronan Mullan⁷, Douglas Veale⁸ and Ursula Fearon², ¹Molecular Rheumatology Trinity Biomedical Sciences Institute, Dublin, Ireland, ²Trinity College Dublin, Dublin, Ireland, ³St Vincent's Hospital, Dublin, Ireland, ⁴Trinity College, Santry, Ireland, ⁵St Vincents University Hospital, Dublin, Ireland, ⁶Janssen R&D, Spring House, PA, ⁷Tallaght University Hospital, Dublin, Ireland, ⁸University College Dublin, Dublin, Ireland
Background/Purpose: Effective treatment of Rheumatoid arthritis (RA) patients is achievable within a short window of opportunity. T-cells are early drivers of synovial inflammation of RA,…
Abstract Number: 1505 • ACR Convergence 2021
Inflammatory Dendritic Cell and Th17 Polarization in Mouse Model of Lupus Nephritis
Latha Prabha Ganesan¹, Noushin Saljoughian¹, James Turman¹, Murugesan Rajaram¹, Brad Rovin², Wael Jarjour¹ and Samir Parikh², ¹Ohio State University, Columbus, OH, ²Ohio State University Wexner Medical Center, Columbus, OH
Background/Purpose: We have recently identified inflammatory dendritic cells (InfDC) in human lupus kidneys. These cells are over expressed in LN patients compared to healthy controls.…
Abstract Number: 1506 • ACR Convergence 2021
SLAMF6 Compartmentalization Regulates Autoimmune T Cell Responses
Yevgeniya Gartshteyn¹, Anca Askanase² and Adam Mor³, ¹Columbia University Medical Center, Glen Rock, NJ, ²Columbia University Medical Center, New York, NY, ³CUIMC, New York, NY
Background/Purpose: T cell activation is initiated by engagement of the T cell receptor (TCR) complex and requires co-receptor signaling. SLAMF6 is a major T cell…
Abstract Number: 1889 • ACR Convergence 2021
Arthritogenic T Cells Harbor a Transcriptional Program of T Cell Activation and a Repertoire Pruned by Endogenous Superantigen
JUDITH F ASHOURI, Elizabeth McCarthy, Steven Yu, Noah Perlmutter, Charles Lin, Chun Jimmie Yu and Arthur Weiss, University of California San Francisco, San Francisco, CA
Background/Purpose: It is widely accepted that activation of specific CD4 T cells through their TCRs by self-antigen (Ag) is necessary for rheumatoid arthritis (RA) onset.…
Abstract Number: 166 • 2020 Pediatric Rheumatology Symposium
Resident Memory T Cells in Human RA Synovium Display Restricted TCR Clones
Margaret Chang¹, Anais Levescot ², Nathan Nelson-Maney ³, Rachel Blaustein ⁴, Kellen Winden ¹, Allyn Morris ⁴, Spoorthi Balu ⁴, Alexandra Wactor ⁴, Kevin Wei ⁵, Lauren Henderson ⁶, Rachael Clark ⁴, Deepak Rao ⁴, Robert Fuhlbrigge ⁷ and Peter Nigrovic ⁸, ¹Boston Children's Hospital, Boston, ²Boston, ³, ⁴Brigham and Women's Hospital, Boston, ⁵BWH, Boston, ⁶Boston Children's Hospital, Watertown, Massachusetts, ⁷University of Colorado, Aurora, ⁸Boston Children's Hospital, Boston, Massachusetts
Background/Purpose: Resident memory T cells (TRM) are site-specific memory T cells that take up long-term residence in peripheral tissues and aid in pathogen defense. Dysregulated…
Abstract Number: 154 • 2020 Pediatric Rheumatology Symposium
T Helper Cell Differentiation in Polyarticular Juvenile Idiopathic Arthritis
Anna Patrick¹, Tashawna Esmond ², David Flaherty ², Thomas Brent Graham ², Susan Thompson ³ and Thomas Aune ¹, ¹Vanderbilt University Medical Center, Nashville, Tennessee, ²Vanderbilt University Medical Center, Nashville, ³Cincinnati Children's Hospital Medical Center/Univ of Cincinnati College of Medicine, Cincinnati
Background/Purpose: Juvenile idiopathic arthritis (JIA) is the most common autoimmune arthritis in children. Polyarticular JIA and extended oligoarticular JIA both have genetic associations near genes…
Abstract Number: 812 • 2019 ACR/ARP Annual Meeting
Sex Differences in Autoimmunity and Cardiovascular Risk Could Be Associated with Altered Treg Phenotype and Lipoprotein Metabolism
George Robinson¹, Kirsty Waddington ¹, Anna Radziszewska ¹, Hannah Peckham ¹, David A Isenberg ², Yiannis Ioannou ¹, Coziana Ciurtin ³, Ines Pineda-Torra ¹ and Elizabeth Jury ¹, ¹University College London, London, United Kingdom, ²Centre for Rheumatology, London, United Kingdom, ³Centre for Adolescent Rheumatology, University College London London, UK, Londond, United Kingdom
Background/Purpose: Males and females have altered immune responses resulting in variation in autoimmune risk. Sex differences exist in the frequency and activity of immune-cell subsets…
Abstract Number: 1004 • 2019 ACR/ARP Annual Meeting
Genetic Ablation of γδTCR Inhibits IL-23-induced Neutrophilia and Attenuates Epidermal Hyperplasia, Synovitis, Onycholysis and Enthesitis Associated with Psoriatic Arthritis
Cuong Nguyen¹, Trevor Chan ², Ilias Tagkopoulos ², Matthias Eberl ³ and Iannis Adamopoulos ¹, ¹Division of Rheumatology, Allergy and Clinical Immunology, University of California at Davis, Sacramento, CA, ²University of California, Davis, Department of Computer Science, California, USA, Davis, CA, ³Division of Infection and Immunity, School of Medicine and Systems Immunity Research Institute, Cardiff University, Cardiff CF14 4XN, United Kingdom, Cardiff, United Kingdom
Background/Purpose: γδ T cells are non-conventional lymphocytes that straddle between innate and adaptive immunity. Although γδ T cells have been implicated in psoriatic arthritis, the…
Abstract Number: 1025 • 2019 ACR/ARP Annual Meeting
Dynamic Changes During SLE Flare Implicate Age-Associated B Cells and Altered T Follicular and Peripheral Helper Cell Responses in Disease Activity
Kieran Manion¹, Zahi Touma ², Dennisse Bonilla ², Dafna Gladman ³, Murray Urowitz ² and Joan Wither ⁴, ¹Krembil Research Institute, Toronto, ON, Canada, ²University Health Network, University of Toronto, Toronto, ON, Canada, ³Krembil Research Institute, U of Toronto, Toronto, ON, Canada, ⁴University Health Network, Krembil Research Institute, Toronto, ON, Canada
Background/Purpose: SLE is a chronic autoimmune disorder in which periods of relative disease inactivity are punctuated by flares that present with increased inflammation and tissue…
Abstract Number: 1031 • 2019 ACR/ARP Annual Meeting
Expanded Circulating Peripheral Helper T Cells Are Associated with B Cell Differentiation in Systemic Lupus Erythematosus
Ayako Makiyama¹, Asako Chiba ², Daisuke Noto ¹, Goh Murayama ³, Tomohiro Mizuno ⁴, Taiga Kuga ⁵, Ken Yamaji ⁵, Naoto Tamura ⁵ and Sachiko Miyake ², ¹Juntendo University School of Medicine, Tokyo, Japan, ²Department of Immunology, Juntendo University School of Medicine, Tokyo, Japan, ³Department of Internal Medicine and Rhumatology, Juntendo University School of Medicine, Tokyo, Japan, ⁴Department of Immunlogy, Juntendo University School of Medicine, Tokyo, Japan, ⁵Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
Background/Purpose: Autoreactive T-B cell interactions in lymphoid tissue have been thought to play a crucial role in the autoantibody production in systemic lupus erythematosus (SLE).…
Abstract Number: 25 • 2019 ACR/ARP Annual Meeting
Altered Distribution and Enhanced Osteoclastogenesis of Mucosal-associated Invariant T Cells in Gouty Arthritis
Yong-Wook Park¹, Young-Nan Cho ¹, Hae-Seong Jeong ¹, Hye-Mi Jin ¹ and Seung-Jung Kee ¹, ¹Department of Rheumatology, Chonnam National University Medical School and Hospital, Gwangju, Republic of Korea
Background/Purpose: Mucosal-associated invariant T (MAIT) cells are subsets of innate invariant T cells and rapidly produce Th1/Th17 cytokines including interferon (IFN)-γ, tumor necrosis factor (TNF)-α,…
Abstract Number: 1069 • 2019 ACR/ARP Annual Meeting
CD4+ T Helper Cell Populations with High PD-1 Expression Are Expanded in Systemic Sclerosis
Alisa Mueller¹, Andrea Fava ², Deepak Rao ¹ and Francesco Boin ³, ¹Brigham and Women's Hospital, Boston, MA, ²Johns Hopkins University School of Medicine, Baltimore, MD, ³UCSF, San Francisco, CA
Background/Purpose: Systemic sclerosis (SSc) is an autoimmune disease characterized by tissue fibrosis, vascular injury, and autoantibody production. CXCR5+ PD-1+ T follicular helper (Tfh) cells, which…
Abstract Number: 66 • 2019 ACR/ARP Annual Meeting
Amelioration of Immune Complex-Mediated Glomerulonephritis by CD6 Modulation
Samantha Chalmers¹, Sayra Garcia ¹, Jeanette Ampudia ², Cherie Ng ², Stephen Connelly ² and Chaim Putterman ³, ¹Albert Einstein College of Medicine, Bronx, NY, ²Equillium, Inc, San Diego, CA, ³Albert Einstein College of Medicine, New York, NY
Background/Purpose: CD6 is a co-stimulatory receptor on T cells, that binds to activated leukocyte cell adhesion molecule (ALCAM), a ligand expressed on antigen presentation cells…
Abstract Number: 1455 • 2019 ACR/ARP Annual Meeting
B and T Cell Immunologic Features Associated with Higher Disease Activity Score and Focus Score in Primary Sjögren Syndrome
Alice Mai¹, Yuriy Baglaenko ², Dario Ferri ³, Kieran Manion ⁴, Dennisse Bonilla ⁵, Arthur Bookman ⁶ and Joan Wither ⁷, ¹University of British Columbia Department of Rheumatology, Vancouver, Canada, ²Brigham Woman's Hospital, Boston, ³University Health Network, Toronto, ON, Canada, ⁴Krembil Research Institute, Toronto, ON, Canada, ⁵University Health Network, University of Toronto, Toronto, ON, Canada, ⁶University Health Network, Toronto, Canada, ⁷University Health Network, Krembil Research Institute, Toronto, ON, Canada
Background/Purpose: Primary Sjögren syndrome (pSS) is a systemic autoimmune disease with an incompletely understood pathogenesis and heterogenous disease manifestations. Identifying cellular immune changes that may…
Abstract Number: 94 • 2019 ACR/ARP Annual Meeting
Tumor Necrosis Factor Receptor 2 Signaling Potentiates Proliferation and Suppressive Activities of Follicular Regulatory T Cells
Shotaro kawano¹, Hiroki Mitoma ², Shoichiro Inokuchi ³, Masahiro Ayano ², Yasutaka Kimoto ⁴, Mitsuteru Akahoshi ², Yojiro Arinobu ², Koichi Akashi ², Takahiko Horiuchi ⁵ and Hiroaki Niiro ⁶, ¹Department of Medicine and Biosystemic Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan, ²Department of Medicine and Biosystemic Science, Graduate School of Medical Sciences, Fukuoka, Japan, Fukuoka, Japan, ³Department of Medicine and Biosystemic Science, Graduate School of Medical Sciences, Fukuoka, Japan, Fukuoka, Fukuoka, Japan, ⁴Department of Internal Medicine, Kyushu University Beppu Hospital, Beppu, Japan, ⁵Department of Internal Medicine, Kyushu University Beppu Hospital, Beppu, Japan, Beppu, Japan, ⁶Clinical Education Centre, Kyushu University Hospital, Fukuoka, Japan, Fukuoka, Japan
Background/Purpose: Tumor Necrosis Factor (TNF) α is a multifunctional cytokine with pro-inflammatory and anti-inflammatory characteristics. Regulatory T cells (Treg) express a remarkably high level of…

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