Abstracts tagged "innate immunity"

Abstract Number: 0938 • ACR Convergence 2024
Group 2 Innate Lymphoid Cells Promote T Cell Activation and Development of Autoimmune Arthritis
Agnieszka Lastowska¹, Anders Nguyen², Miriam Bollmann² and Mattias Svensson³, ¹University of Gothenburg, Goteborg, Sweden, ²University of Gothenburg, Göteborg, Sweden, ³University of Gothenburg, Gothenburg, Sweden
Background/Purpose: Innate Lymphoid Cells (ILCs) are the innate counterparts to T cells and can be divided into three functionally distinct subpopulations: Group 1 (ILC1), Group…
Abstract Number: 2506 • ACR Convergence 2024
THP1-derived Macrophage Polarization in Takayasu Arteritis – Impact of Disease Status and Therapy
João Paulo dos Santos¹, Cristina Orikaza¹, Mariana Aguiar², Gerson Keppeke³ and Alexandre de Souza⁴, ¹Universidade Federal de Sao Paulo, São Paulo, SP, Brazil, ²Rheumatology Division, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil, ³Universidad Catolica del Norte, São Paulo, Coquimbo, Brazil, ⁴UNIFESP-EPM, São Paulo, SP, Brazil
Background/Purpose: Macrophages play an important role in the pathophysiology of Takayasu arteritis (TAK) as granulomatous inflammation is typically found in affected arteries. The expression of…
Abstract Number: 0951 • ACR Convergence 2024
A Feedback Loop Involving mtDNA, Platelets and Neutrophil Extracellular Traps Amplifies Inflammation in Systemic Sclerosis
Stavros Giaglis¹, Diego Kyburz² and Ulrich Walker³, ¹Experimental Rheumatology Laboratory, University of Basel, Basel, Switzerland, ²University Hospital Basel, Basel, Switzerland, ³Basel University Hospital, Basel, Switzerland
Background/Purpose: Mitochondria are essential eucaryotic cell organelles with several bacterial features, such as a double-stranded circular genome with hypomethylated CpG areas (1). A fundamental role of…
Abstract Number: 2518 • ACR Convergence 2024
Behçet’s Disease Immune Landscape Exhibits a Universal NF-kB-mediated Hyperactivation Pattern with Cell-specific TNFAIP3 Responses and a Superimposed IFN-regulated Endotype
Yesim Ozguler¹, Olivier Manches², Didar Ucar³, Ziyan Lin², Alireza Khodadadi-Jamayran², Aristotelis Tsirigos², Gulen Hatemi¹ and Johannes Nowatzky⁴, ¹Istanbul University-Cerrahpasa, Cerrahpasa Medical Faculty, Department of Internal Medicine, Division of Rheumatology, Istanbul, Turkey, ²NYU Grossman School of Medicine, New York, NY, ³Istanbul University-Cerrahpasa, Cerrahpasa Medical Faculty, Department of Ophthalmology, Istanbul, Turkey, ⁴New York University Grossman School of Medicine, New York, NY
Background/Purpose: The immune landscape of Behçet’s disease (BD) remains ill-defined, lacking a unifying picture, precise disease phenotype-endotype correlations, and an understanding of immunity at target…
Abstract Number: 0952 • ACR Convergence 2024
Single Cell RNA-seq of Scleroderma-associated Interstitial Lung Disease Lung Explants Reveals an Active, Cytotoxic Natural Killer Cell Population
Cristina Padilla, Eleanor Valenzi, Tracy Tabib, Banafsheh Nazari, Patrizia Fuschiotti and Robert Lafyatis, University of Pittsburgh, Pittsburgh, PA
Background/Purpose: Scleroderma-associated interstitial lung disease (SSc-ILD) is the leading cause of death among SSc patients. Loss of alveolar epithelial cells (AEC) and bronchial cell hyperplasia,…
Abstract Number: 2540 • ACR Convergence 2024
Characterizing the Functional Role of Type I Interferons in Inflammatory Arthritis
Mary Huang, Richard Bell, Toolika Singh and Lionel Ivashkiv, Hospital for Special Surgery, New York, NY
Background/Purpose: Rheumatoid arthritis (RA) is a chronic autoimmune disease characterized by synovial inflammation due to cellular infiltration and inflammatory mediators. Type I interferons (IFN) have…
Abstract Number: 0964 • ACR Convergence 2024
Engaging the PD-1 Pathway Attenuates Inflammation Associated Fibrosis in Systemic Sclerosis Fibroblasts and a Preclinical Mouse Model
Maithri Aspari¹, Voon Ong², Klaus Soendergaard³, Esben Naeser⁴, Malene Hvid⁴, Angela Tam⁵, Shiwen Xu⁵, Christopher Denton⁶, David Abraham⁷, Bent Deleuran¹ and Stinne Greisen⁸, ¹Aarhus University, Aarhus, Denmark, ²University College London, London, England, United Kingdom, ³Aarhus University Hospital, Aarhus, Denmark, ⁴AARHUS UNIVERSITET, AARHUS C, Denmark, ⁵University College London, London, United Kingdom, ⁶University College London, Northwood, United Kingdom, ⁷UCL, London, United Kingdom, ⁸Aarhus University/Aarhus University Hospital, Aarhus, Denmark
Background/Purpose: The precise molecular mechanisms driving fibrosis in diffuse cutaneous systemic sclerosis (dcSSc) remain to be elucidated. The immune regulatory programmed cell death protein 1…
Abstract Number: 2542 • ACR Convergence 2024
Group 2 Innate Lymphoid Cells Aggravates Development of Inflammatory Arthritis
Anders Nguyen¹, Miriam Bollmann¹, Agnieszka Lastowska², Anna-Karin Hultgård Ekwall¹, Dietmar Zaiss³, Gary Firestein⁴ and Mattias Svensson⁵, ¹University of Gothenburg, Göteborg, Sweden, ²University of Gothenburg, Goteborg, Sweden, ³University Hospital Regensburg, Regensburg, Germany, ⁴University of California, San Diego, San Diego, CA, ⁵University of Gothenburg, Gothenburg, Sweden
Background/Purpose: Activation of fibroblast-like synoviocytes (FLS) by immune cells drives inflammation and joint damage in rheumatoid arthritis (RA). Hence, understanding factors that induce destructive behaviors…
Abstract Number: 0967 • ACR Convergence 2024
Transcriptional Heterogeneity of Immune Cells in the Esophagus of Systemic Sclerosis Patients: A Comparison of Upper and Lower Esophageal Regions
Hadijat Makinde¹, Miranda Gurra¹, Salina Dominguez², Matthew Dapas², Tyler Therron², Kathleen Aren³, Marie-Pier Tetreault², Monique Hinchcliff⁴, Deborah Winter⁵ and Harris Perlman¹, ¹Northwestern University, Chicago, IL, ²Northwestern University, Chicago, ³Northwestern University Division of Rheumatology, Chicago, IL, ⁴Yale School of Medicine, Westport, CT, ⁵Northwestern University, Skokie, IL
Background/Purpose: Systemic sclerosis (SSc) is characterized by an initial inflammatory phase followed by fibrosis. Esophageal dysfunction in SSc is associated with gastroesophageal reflux, leading to…
Abstract Number: 1701 • ACR Convergence 2024
STING Pathway Activity in SLE Patient Serum Correlates with NFkB Activation, Autoantibody Levels, and a Unique Cytokine Profile That Drives Disease Activity
Hyun Hee Kim¹, Haochen Jiang², Tatiana Ort³, Gary Sims³ and Richard Hanna⁴, ¹AstraZeneca, Gaithersburg, MD, ²University of Nebraska, Omaha, NE, ³Immunology Biosciences, Research and Early Development, Respiratory and Immunology (R&I), BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, ⁴AstraZeneca, Dickerson, MD
Background/Purpose: Systemic lupus erythematosus (SLE) is a heterogenous systemic autoimmune disease which is associated with innate immune activation, type I IFN, inflammasome and NFkB-related cytokines.…
Abstract Number: 1712 • ACR Convergence 2024
Transcriptome Analysis Characterizes the Role of Monocytes in Ankylosing Spondylitis with TNF-blocker Treatment
Yulong Tang¹, Jiangnan Xie², Dachun Zhuo¹, Qi ZHU³, Jiucun Wang¹ and Jing Liu², ¹Fudan University, Shanghai, China (People's Republic), ²Fudan University, Shanghai, Shanghai, China (People's Republic), ³Shanghai Guanghua Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai, China (People's Republic)
Background/Purpose: Ankylosing spondylitis (AS) is an autoimmune and auto-inflammatory disease characterized by chronic inflammation of the spine, sacroiliac joint, and occasionally peripheral joints. TNF-α inhibitor…
Abstract Number: 1766 • ACR Convergence 2024
STAT2-Associated Type I Interferonopathy: A Masquerade of Infectious Susceptibility
Conor Gruber¹, Angelica Lee², Sofija Buta², Marta Martin Fernandez², Veronique Houdouin³, Jean-Laurent Casanova⁴, Alice Hadchouel⁵, Jacinta Bustamante⁵ and Dusan Bogunovic², ¹Mount Sinai Hospital, New York, NY, ²Columbia University, New York, NY, ³Robert Debré Hospital, Paris, France, ⁴Rockefeller University, New York, NY, ⁵Hôpital Necker-Enfants Malades, Paris, France
Background/Purpose: Type I IFN (IFN-I) signaling is a potent inflammatory pathway fundamental to antiviral immunity. In humans, loss of IFN-I activity underlies severe viral disease,…
Abstract Number: L02 • ACR Convergence 2023
Mutational Analysis of UNC93B1 Identifies Regulatory Regions Mutated in Human SLE
John Huizar¹, Victoria Rael², Julian Yano², Leianna Slayden³, Madeleine Weiss⁴, Robert Saxton⁴, Bo Liu⁵, Olivia Majer⁶ and Gregory Barton⁷, ¹UCSF, San Francisco, CA, ²Division of Immunology and Molecular Medicine, Department of Molecular and Cell Biology, UC Berkeley, Berkeley, CA, ³HHMI at UC Berkeley, Berkeley, CA, ⁴UC Berkeley, Berkeley, CA, ⁵Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shangai, China, ⁶Max Planck Institute for Infection Biology, Berlin, Germany, ⁷UC Berkeley / HHMI, Berkeley, CA
Background/Purpose: Endosomal nucleic acid-sensing toll-like receptors 3, 7 and 9 are key innate immune sensors of dsRNA, ssRNA and ssDNA, respectively, whose activities must be…
Abstract Number: L08 • ACR Convergence 2023
Early Clinical Development of CIT-013, a First in Class NETosis Inhibitor, in a Randomized Phase I Dose Escalation Study in Healthy Volunteers Demonstrating Potent Inhibition of LPS Induced Neutrophil Extracellular Trap Formation
Leonie Middelink¹, Renato Chirivi², Helmuth van Es², Eric Meldrum², Peter van Zandvoort², Tirza Bruurmijn², Matthijs Moerland³ and Patrick Round², ¹Middelinc., Utrecht, Netherlands, ²Citryll BV, Oss, Netherlands, ³CHDR, Leiden, Netherlands
Background/Purpose: Aberrant Neutrophil Extracellular Traps (NETs) production contributes to the pathophysiology of multiple inflammatory and autoimmune diseases such as Rheumatoid arthritis (RA) Hidradenitis suppurativa (HS),…
Abstract Number: 0920 • ACR Convergence 2023
Proinflammatory Neutrophils and NETs Mediate Skin and Kidney Inflammation During Lupus Flare in Asymptomatic Lupus-prone Mice Triggered by UVB
Xing Lyu¹, minghui li¹, ping zhang², Wei Wei³, victoria werth⁴ and Ming-Lin Liu⁵, ¹Tianjin Medical University, Tianjin, China, ²Beaumont Hospital Royal Oak, Royal Oak, MI, ³Tianjin Medical University General Hospital, Tianjin, China, ⁴University of Pennsylvania, Wynnewood, PA, ⁵University of Pennsylvania, Philadelphia, PA
Background/Purpose: Ultraviolet B (UVB) exposure triggers lupus flare by worsening both skin lesions and systemic symptoms, i.e. lupus nephritis. We recently reported that UVB exposure…

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