Abstracts tagged "immunology"

Abstract Number: 1726 • ACR Convergence 2022
Impaired Dynamic X-Chromosome Inactivation Maintenance in T Lymphocytes Is a Feature of Spontaneous Lupus in Female Mice and Is Exacerbated in Female-Biased Disease Models
Nikhil Jiwrajka¹, Natalie Toothacre², Zachary Beethem², Sarah Sting², Katherine Forsyth², Amanda Driscoll², William Stohl³ and Montserrat Anguera², ¹Division of Rheumatology, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, ²Department of Biomedical Sciences, University of Pennsylvania School of Veterinary Medicine, Philadelphia, PA, ³University of Southern California, Los Angeles, CA
Background/Purpose: SLE is highly female-biased, yet the molecular origins of this bias remain unclear. The X chromosome contains many immune-related genes, suggesting that X-linked epigenetic…
Abstract Number: 2181 • ACR Convergence 2022
Gut Microbe-derived Short-Chain Fatty Acids Regulate Arthritis and Myositis During Chikungunya Virus Infection
Fang R. Zhao¹, Emma Winkler¹, Chun-Jun Guo², Russell B. Williams³, Leran Wang¹, Ana Jung¹, Lindsay Droit¹, Leah Heath¹, Ting-ting Li², Matthias Mack⁴, Megan T. Baldridge¹, Thaddeus S. Stappenbeck⁵, Larissa B. Thackray¹, Scott A. Handley¹, Michael A. Fischbach⁶ and Michael S. Diamond¹, ¹Washington University in St. Louis, St. Louis, MO, ²Cornell University, New York, NY, ³Donald Danforth Plant Science Center, St. Louis, MO, ⁴University Hospital Regensburg, Regensburg, Germany, ⁵Cleveland Clinic, Cleveland, OH, ⁶Stanford University, Stanford, CA
Background/Purpose: The intestinal microbiota regulates musculoskeletal inflammation and antibiotic use increases risk for the development or relapse of inflammatory arthritis. However, the basis for this…
Abstract Number: 0161 • ACR Convergence 2022
Lenabasum, a Cannabinoid Type 2 Receptor Agonist, Exerts Anti-Inflammatory Effects in Dermatomyositis in Th1 Cells
DeAnna Diaz¹, Thomas Vazquez², Nilesh Kodali³, Madison Grinnell⁴, Emily Keyes⁴, Josh Dan⁴, Grant Sprow⁵, Muhammad Bashir⁶, Meena Sharma⁷ and Victoria Werth⁸, ¹Philadelphia College of Medicine, Philadelphia, PA, ²FIU Wertheim College of Medicine, Virginia Beach, VA, ³New Jersey Medical School, Coppell, TX, ⁴Philadelphia VAMC, Philadelphia, PA, USA and Department of Dermatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, ⁵Albert Einstein College of Medicine, Philadelphia, PA, ⁶University of Pennsylvania, Philadelphia, PA, ⁷Philadelphia VAMC, Philadelphia, PA, USA and Department of Dermatology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, ⁸University of Pennsylvania and Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA
Background/Purpose: Dermatomyositis (DM) is a chronic, systemic autoimmune disease affecting the skin, muscle, and lungs. Lenabasum, a non-psychoactive cannabinoid type 2 receptor (CB2R) agonist, is…
Abstract Number: 0630 • ACR Convergence 2022
Ferroptosis of CD163+ Tissue Infiltrating Macrophages in Lupus Nephritis
Qi Cheng, Huaxiang Wu and Yan Du, The Second Affiliated Hospital Of Zhejiang University School Of Medicine, Hangzhou, China
Background/Purpose: Lupus nephritis (LN) is one of the most common complications of systemic lupus erythematosus (SLE), with high morbidity and mortality. Despite a better understanding…
Abstract Number: 0787 • ACR Convergence 2022
Relationship Between Humoral and Cellular Immune Responses in Persons with Rheumatoid Arthritis Following a Third Dose of COVID-19 Vaccine
Sara Tedeschi¹, Daniel Solomon¹, Yuezhou Chen², Jack Ellrodt¹, Mary Grace Whelan¹, Jacklyn Stratton¹, Keigo Hayashi³, Noah Whiteman², Lin Chen¹, Ifeoluwakiisi Adejoorin¹, Kathryne Marks¹, Emma Gomez-Rivas¹, Deepak Rao¹, Anna Jonsson¹ and Duane Wesemann², ¹Brigham and Women's Hospital, Boston, MA, ²Harvard Medical School, Boston, MA, ³Brigham and Women's Hospital, Okayama, Japan
Background/Purpose: DMARDs that treat RA may reduce immune responses to COVID-19 vaccination. We compared measures of humoral and cell-mediated immunity in RA patients before and…
Abstract Number: 1480 • ACR Convergence 2022
Is Lupus Podocytopathy a New Variant of Lupus Nephritis?
Clarice P. Lin¹ and Richard C. Chou², ¹University at Buffalo Jacobs School of Medicine and Biomedical Sciences, Department of Medicine, Buffalo, NY, ²University at Buffalo Jacobs School of Medicine and Biomedical Sciences, Division of Allergy, Immunology, & Rheumatology, Department of Medicine, Buffalo, NY
Background/Purpose: Kidney disease is a common manifestation of systemic lupus erythematosus (SLE); when it presents as glomerulonephritis also known as lupus nephritis (LN), it predicts…
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: 2184 • ACR Convergence 2022
CaMK4 Controls the Humoral Response via the T Follicular Helper Compartment and Regulates Autoimmunity
Marc Scherlinger¹, Hao Li², Wenliang Pan², Maria Tsokos¹ and George Tsokos², ¹BIDMC Harvard University, Boston, MA, ²Division of Rheumatology and Clinical Immunology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
Background/Purpose: Systemic lupus erythematosus (SLE) is characterized by a dysregulated T cell compartment and production of autoantibodies leading to organ damage. We previously identified that…
Abstract Number: 0218 • ACR Convergence 2022
A Web-based Education Program Improves Health Care Provider Knowledge for the Care of Cancer Patients Receiving Immunotherapy Who Develop Rheumatic Immune-related Complications, and Those with Pre-existing Rheumatic Disease: An Initiative of CanRIO
Janet Roberts¹, Keith Lau², Daniel Ennis³, Marie Hudson⁴, Shahin Jamal³, Steven Katz² and Carrie Ye², ¹Dalhousie University, Halifax, NS, Canada, ²University of Alberta, Edmonton, AB, Canada, ³University of British Columbia, Vancouver, BC, Canada, ⁴McGill University, Montréal, QC, Canada
Background/Purpose: Immunotherapy has revolutionized the treatment of many advanced stage malignancies. These agents harness the immune system to fight cancer. However, use of these agents…
Abstract Number: 0633 • ACR Convergence 2022
Identification of Systemic Lupus Erythematosus Endotypes by Analysis of Inflammatory and Immunologic Gene Expression Signatures
Erika Hubbard¹, Prathyusha Bachali², Kathryn Kingsmore Allison¹, Yisha He¹, Michelle Catalina³, Amrie Grammer⁴ and Peter Lipsky¹, ¹AMPEL BioSolutions, Charlottesville, VA, ²AMPEL BioSolutions, Redmond, WA, ³AMPEL BioSolutions, Harvard, MA, ⁴AMPEL LLC, Charlottesville, VA
Background/Purpose: One of the hallmarks of SLE is clinical and molecular heterogeneity. Recent work has leveraged next-generation sequencing techniques to identify molecular signatures characteristic of…
Abstract Number: 0789 • ACR Convergence 2022
The Persistence of Anti-Spike Antibodies Following Two SARS-CoV-2 Vaccine Doses in Patients with Immune-mediated Inflammatory Diseases on Immunosuppressive Therapy Compared to Healthy Controls: A Prospective Cohort Study
Ingrid Egeland Christensen¹, Ingrid Jyssum¹, Anne Therese Tveter¹, Joe Sexton¹, Siri Mjaaland², Grete Birkeland Kro³, Tore K. Kvien¹, David Warren³, Jørgen Jahnsen⁴, Ludvig A. Munthe³, Espen Haavardsholm¹, Gunnveig Grødeland³, Kristin Kaasen Jørgensen⁴, Silje Watterdal Syversen¹, Guro Løvik Goll¹ and Sella Aarrestad Provan¹, ¹Diakonhjemmet Hospital, Oslo, Norway, ²Norwegian Institute of Public Health, Oslo, Norway, ³Oslo University Hospital, Oslo, Norway, ⁴Akershus University Hospital, Oslo, Norway
Background/Purpose: The durability of vaccine-induced humoral immunity against SARS-CoV-2 in patients with immune-mediated inflammatory diseases (IMIDs) on immunosuppressive therapy is not well characterized. The aim…
Abstract Number: 1548 • ACR Convergence 2022
Immune Cells Are Highly Disturbed in Polymyalgia Rheumatica Patients
Guillermo CARVAJAL ALEGRIA¹, Sara Boukhlal², Sophie Hillion³, Pierre Pochard³, Emmanuelle Porchet³, Alain Saraux⁴, sandrine jousse joulin⁵, Thierry MARHADOUR⁶, Dewi Guellec³, Divi CORNEC⁷ and Valerie Devauchelle², ¹CHRU de Tours, Tours, France, ²Université de Bretagne Occidentale, Brest, France, ³CHRU de Brest, Brest, France, ⁴CHU Brest, Brest, France, ⁵Roche, Brest, France, ⁶CHU Cavale Blanche, Brest, France, ⁷CHRU Brest, Brest, France
Background/Purpose: Polymyalgia rheumatica (PMR) is an inflammatory disease. But it's pathophysiology and the impact of the treatments on immune cells are poorly known. Our objectives…
Abstract Number: 1736 • ACR Convergence 2022
IL-23 Signaling Induces Autoimmune Disease Genes in Mucosal-Associated Invariant T Cells
Tharshana Stephen¹, Ambre Dangien¹, Claire Leloup¹, Ikram Mezghiche¹, Laetitia Camard¹, Hanan Yahia-Cherbal¹, Vincent Guillemot², Natalia Pietrosemoli¹, Hélène Lopez-Maestre¹, Julie Marsande¹, Milena Hasan¹, Dan Cua³, Anne Fourie⁴, Carrie Greving⁵, Raphaelle Parker⁶, Barbara Joyce Shaikh⁷, Bénédicte Oulès⁸, Sarah Guégan⁸, Sélim Aractingi⁸, Elisabetta Bianchi¹ and Lars Rogge¹, ¹Institut Pasteur, Paris, France, ²Institut Pasteur, Paris, Ile-de-France, France, ³Janssen Research and Development, LLC, Spring House, PA, ⁴Janssen Research & Development, LLC, San Diego, CA, USA, San Diego, CA, ⁵Janssen Research & Development, LLC, San Diego, CA, USA, San Diego, ⁶Janssen Research & Development, Janssen-Cilag, Paris, France, ⁷Janssen Research & Development, LLC, San Diego, CA, ⁸Hôpital Cochin, AP-HP, Paris, France
Background/Purpose: Genome-wide association studies and mouse models of autoimmune disease have demonstrated an important role of the IL-23 signaling pathway in the pathogenesis of axial…
Abstract Number: 2185 • ACR Convergence 2022
Development of a Novel Regulatory T Cell-Based Therapy for Patients with Rheumatoid Arthritis
Anne-Renee van der Vuurst de Vries¹, Kathryn Hooper¹, Jonathan Graf², Katie Tuckwell¹ and Joshua Beilke¹, ¹Sonoma Biotherapeutics, South San Francisco, CA, ²Ucsf, San Francisco, CA
Background/Purpose: Rheumatoid arthritis (RA) is a chronic autoimmune inflammatory condition with persistent unmet medical need despite significant treatment advances. The pathogenesis of RA is initiated…
Abstract Number: 0261 • ACR Convergence 2022
Machine Learning and Computational Pathology Can Reveal Synovial Pathotypes in Mice and Humans
Richard Bell¹, Matthew Brendel², Justin Xiang³, AMP RA/SLE Consortium¹, Edward DiCarlo¹, Jennifer Anolik⁴, Laura Donlin¹, Dana Orange⁵, Edward Schwarz⁴, Lionel Ivashkiv¹ and Fei Wang², ¹Hospital for Special Surgery, New York, NY, ²Weil Cornell Medical College, New York, NY, ³Horace Grant High School, New York, NY, ⁴University of Rochester Medical Center, Rochester, NY, ⁵The Rockefeller University, New York, NY
Background/Purpose: Synovial pathotyping is a critical step in understanding the etiology of inflammatory arthritis as different pathotypes have differential response to therapy. Determining these pathotypes…

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