Abstracts tagged "innate immunity"

Abstract Number: 2505 • ACR Convergence 2024
C5 Signaling Pathway Genes as Key Drivers of the Pathogenesis of IgA Vasculitis?
Joao Carlos Batista-Liz¹, Vanesa Calvo-Rio², María Sebastián Mora-Gil³, Ligia Gabrie-Rodriguez⁴, Rafael Gálvez Sánchez⁴, Belén Sevilla-Pérez⁵, José Luis Callejas⁶, María Teresa Leonardo⁷, Ana Peñalba⁷, Javier Narvaez-García⁸, Luis Martín-Penagos⁹, Luis Caminal-Montero¹⁰, PAZ COLLADO¹¹, Patricia Quiroga Colina¹², Esther Vicente-rabaneda¹³, Esteban Rubio¹⁴, Manuel León Luque¹⁵, Juan María Blanco-Madrigal¹⁶, Eva Galindez-Agirregoikoa¹⁷, Santos Castañeda¹³, Ricardo Blanco-Alonso¹⁸, Veronica Pulito-Cueto¹ and Raquel Lopez-mejias¹, ¹IDIVAL, Santander, Spain, ²Valdecilla Hospital, Santander, Cantabria, Spain, ³Immunopathology Group, IDIVAL, Santander, Spain, ⁴Immunopathology Group, IDIVAL. Division of Rheumatology, Hospital Universitario Marqués de Valdecilla, Santander, Spain, ⁵Division of Pediatrics, Hospital Universitario San Cecilio, Granada, Spain, ⁶Systemic Autoimmune Diseases Unit, Hospital Clinico San Cecilio, Instituto de Investigación Biosanitaria de Granada ibs.GRANADA, Granada, Spain, ⁷Division of Pediatrics, Hospital Universitario Marqués de Valdecilla, Santander, Spain, ⁸Hospital Universitario de Bellvitge, Barcelona, Spain, ⁹Immunopathology Group, IDIVAL. Division of Nephrology, Hospital Universitario Marqués de Valdecilla, Santander, Spain, ¹⁰Internal Medicine Department, Hospital Universitario Central de Asturias, Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), Oviedo, Spain, ¹¹Hospital Universitario Severo Ochoa, MADRID, Spain, ¹²Division of Rheumatology, Hospital Universitario de La Princesa, Madrid, Spain, ¹³Hospital Universitario de La Princesa, Madrid, Spain, ¹⁴Division of Rheumatology, Hospital Universitario Virgen del Rocío, Sevilla, Spain, Sevilla, Spain, ¹⁵Division of Rheumatology, Hospital Universitario Virgen del Rocío, Sevilla, Spain., Sevilla, Spain, ¹⁶Division of Rheumatology, Hospital Universitario de Basurto, Bilbao, Spain., Bilbao, Spain, ¹⁷BASURTO UNIVERSITY HOSPITAL, BILBAO, Spain, ¹⁸Division of Rheumatology, Hospital Universitario Marqués de Valdecilla. IDIVAL, Immunopathology group, Santander, Spain
Background/Purpose: Immunoglobulin A Vasculitis (IgAV) is an inflammatory disease caused by the accumulation of immune complexes of IgA in the walls of small blood vessels…
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: 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: 0892 • ACR Convergence 2023
Single-Cell RNA Sequencing Reveals Keratinocytes and Fibroblasts Drive Hippo and TGFb Dysregulation and Fibrosis in Epidermal Overexpression of VGLL3 in Cutaneous Lupus
Mehrnaz Gharaee-Kermani¹, Allison Billi¹, Jacob Martens¹, Marisa Hildebrandt¹, Amanda Victory¹, Mitra Maz², Shannon Loftus¹, J. Michelle Kahlenberg¹ and Johann E. Gudjonsson¹, ¹University of Michigan, Ann Arbor, MI, ²University of Michigan Medical School, Ann Arbor, MI
Background/Purpose: Fibrosis is characterized by collagen deposition, fibro/myofibroblast (MYOFB) accumulation, and extracellular matrix remodeling. In some subtypes of cutaneous lupus erythematosus (CLE), particularly discoid lupus…
Abstract Number: 2427 • ACR Convergence 2023
Degranulating PR3+ Myeloid Cells Characterize Proliferative Lupus Nephritis
Alessandra Ida Celia¹, Xiaoping Yang², Hana Minsky², Silvia Malvica², Michelle Petri³, the Accelerating Medicines Partnership in RA/SLE⁴, Avi Rosenberg⁵ and Andrea Fava², ¹John Hopkins University of Medicine, Rome, Italy, ²Johns Hopkins University, Baltimore, MD, ³Department of Medicine, Division of Rheumatology, Johns Hopkins University School of Medicine, Timonium, MD, ⁴Multiple, Multiple, ⁵Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, MD
Background/Purpose: As part of the Accelerating Medicines Partnership (AMP), we discovered that urinary PR3, a neutrophil degranulation product, is associated with histological activity, indicating the…
Abstract Number: 0894 • ACR Convergence 2023
The Cellular and Spatial Type I Interferon Response Following Skin Exposure to Ultraviolet Light
Jie An¹, Xizhang Sun¹, Rayan Najjar¹, Connie Zhao¹, Paul Kong², Stephanie Weaver², Amanda Koehne², Matt Fitzgibbon² and Keith Elkon¹, ¹University of Washington, Seattle, WA, ²Fred Hutchinson Cancer Center, Seattle, WA
Background/Purpose: SLE patients characteristically have a prominent type I interferon (IFN-I) signature in lesional and non-lesional skin. We recently demonstrated that, following a single exposure…
Abstract Number: 2440 • ACR Convergence 2023
Synovial Shaping of Skin-derived Migrating Immune Cells Determines Initiation of Inflammation in Psoriatic Arthritis
Maria Gabriella Raimondo¹, Simon Rauber², Hashem Mohammadian³, Mario Angeli¹, Cong Xu¹, Aleix Rius Rigau⁴, Markus Luber¹, Hannah Labinsky⁵, Alina Ramming¹, Stefano Alivernini⁶, Jörg Distler¹, Ursula Fearon⁷, Douglas Veale⁸, Michael Sticherling⁹, Juan D Canete¹⁰, Georg Schett¹¹ and Andreas Ramming¹, ¹Department of Internal Medicine 3 – Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany; Deutsches Zentrum für Immuntherapie, Friedrich Alexander University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany, ²3 Department of Internal Medicine 3 – Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany. 4 Deutsches Zentrum für Immuntherapie, Friedrich Alexander University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany., Erlangen, Germany, ³Department of Internal Medicine 3 – Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany. Deutsches Zentrum für Immuntherapie, Friedrich Alexander University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany, ⁴Department of Internal Medicine 3, Rheumatology and Clinical Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany; Deutsches Zentrum Immuntherapie (DZI), FAU Erlangen-Nürnberg and University Hospital Erlangen, Erlangen, Germany, ⁵Medical Department II, Rheumatology, University Hospital Würzburg, Würzburg, Germany, ⁶Immunology Research Core Facility, Gemelli Science and Technology Park, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Division of Rheumatology - Fondazione Policlinico Universitario A. Gemelli IRCCS - Università Cattolica del Sacro Cuore, Rome, Italy, ⁷Trinity College Dublin, Dublin, Ireland, ⁸St.Vincent's University Hosp, Dublin, Ireland, ⁹Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg & Universitätsklinikum Erlangen, Department of Dermatology, Erlangen, Germany, ¹⁰Hospital Clinic an IDIBAPS, Barcelona, Spain, ¹¹Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
Background/Purpose: Around 30% of the patients with psoriasis (PsO) develop psoriatic arthritis (PsA) overtime, suggesting the existence of a disease mediated skin-joint crosstalk. To date,…

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