Abstracts tagged "innate immunity"

Abstract Number: LB22 • ACR Convergence 2025
Early Evidence of Proof-of-Concept of an Albumin-DNASE1L3 Fusion Protein (NTR-441) for the Rapid Enzymatic Inactivation of NETs in SLE with DNASE1L3-Deficiency
Andreas Reiff¹, Tadej Avcin², Bernd Jilma³, Peter Korosec⁴, Matthias Weiss-Tessbach³, Christian Schoergenhofer³, Masa Bizjak⁵, Barbara Jenko Bizjan⁶, Barbara Cugalj Kern⁵, Kim Simpfendorfer⁷, Christian Lood⁸, Tyler Artner⁹, Angelene Prasanna¹, Ken Olivier¹, Ghazaleh Gouya¹, Ralph Lambalot⁹, Abdul Hakkim¹ and Tobias Fuchs¹, ¹Neutrolis, Cambridge, Massachusetts, ²University Medical Centre Ljubljana, Ljubljana, Slovenia, ³Medical University of Vienna, Vienna, Austria, ⁴University Clinic of Respiratory and Allergic Diseases, Golnik, Slovenia, ⁵University Medical Center Ljubljana, Ljubljana, Slovenia, ⁶University of Ljubljana, Ljubljana, Slovenia, ⁷Feinstein Institutes for Medical Research, Manhasset, New York, ⁸University of Washington, Seattle, Washington, ⁹Neutrolis, Cambridge
Background/Purpose: Excessive formation and impaired clearance of Neutrophil Extracellular Traps (NETs) have been linked to autoimmune and inflammatory diseases, notably systemic lupus erythematosus (SLE). DNASE1-like…
Abstract Number: 1864 • ACR Convergence 2025
Mitochondrial Dysfunction Drives cGAS-STING–Mediated Type I Interferon Production and Fibrosis in Systemic Sclerosis
Giulio Forte¹, Vasiliki Liakouli¹, Alessia Salzillo², Mario Angeli³, Daniele Mauro¹, Antonio Ciancio¹, Barbara De Marino², Iacopo Panarese¹, Mario Faenza¹, roberto giacomelli⁴, Andreas Ramming⁵ and Francesco Ciccia⁶, ¹Università della Campania Luigi Vanvitelli, Naples, Italy, ²University of Campania L. Vanvitelli, Naples, Italy, ³Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, Germany, ⁴Università Campus Bio-Medico, Roma, Italy, ⁵Department of Internal Medicine ³, Rheumatology & Immunology, Friedrich-Alexander-University (FAU) & Universitätsklinikum Erlangen, Erlangen, Germany, ⁶Rheumatology Section, University of Campania L. Vanvitelli, Naples, Italy, Naples, Italy
Background/Purpose: Systemic sclerosis (SSc) is an autoimmune disease characterized by type I interferon (IFN-I) production and mitochondrial dysfunction. Emerging evidence suggests that activation of the…
Abstract Number: 0928 • ACR Convergence 2025
Radiolabelled anti-citrullinated histone antibody CIT-013 as a tool to visualize NET rich inflamed joints in a collagen induced arthritic mouse model
Annemarie Kip¹, Daphne Dorst², Birgitte Walgreen², Monique Helsen², Eric meldrum¹, Renato Chirivi¹ and Marije Koenders², ¹Citryll BV, Oss, Netherlands, ²RadboudUMC, Nijmegen, Netherlands
Background/Purpose: Neutrophil Extracellular Traps (NETs) contribute to the pathophysiology of multiple immune-mediated inflammatory diseases including Rheumatoid Arthritis (RA), and may be promising therapeutic targets. The…
Abstract Number: 0079 • ACR Convergence 2025
Association of Protein Arginine Deiminase 4 with the Myosin-9 Motor Complex
Fatemeh Neela Moadab, Farheen Shaikh, Xiaoxing Wang, cecilia mustelin, Ethan Le, Rayan Najjar, Jie An, Alison Bays and Tomas Mustelin, University of Washington, Seattle, WA
Background/Purpose: Genetic association data, immunohistochemistry, and functional experiments implicate protein arginine deiminase 4 (PAD4) in the pathogenesis of rheumatoid arthritis (RA). This disease is characterized…
Abstract Number: 1827 • ACR Convergence 2025
Transcriptomics and Machine Learning Unraveling the Molecular Drivers of PFAPA Flares
Sivia Lapidus¹, Tresa Ambooken², Ellen Hakim³, Tara Lozy⁴, Elahe Golalipour³, Sohail Adonimohammed⁵, Jennifer Weiss⁶, Suzanne Li⁶, Amanda Nowakowski⁷, Aryeh Lejtman⁸, Aaron Sebbag³, Ariel Aptekmann⁹ and Jigar Desai⁹, ¹Joseph M. Sanzari Children's Hospital, Center for Discovery and Innovation, Hackensack Meridian School of Medicine, Montclair, NJ, ²Food and Drug Administration, Floral Park, NY, ³Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, NJ, ⁴Joseph M. Sanzari Children's Hospital, Center for Discovery and Innovation, Hackensack Meridian School of Medicine, Nutley, ⁵Hackensack Meridian School of Medicine, Nutley, NJ, ⁶Joseph M. Sanzari Children's Hospital and Hackensack Meridian School of Medicine, Hackensack, NJ, ⁷Joseph M. Sanzari Children's Hospital, Hackensack Meridian Health, Hackensack, NJ, ⁸Joseph M. Sanzari Children's Hospital and Center for Discovery and Innovation, Hackensack Meridian Health, Nutley, NJ, ⁹Center for Discovery and Innovation and Hackensack Meridian School of Medicine, Hackensack Meridian Health, Nutley, NJ
Background/Purpose: Periodic Fever, Aphthous Stomatitis, Pharyngitis, and Adenitis (PFAPA) is the most common periodic fever presenting with frequent episodes of pain and impaired function. While…
Abstract Number: 0927 • ACR Convergence 2025
Improved Skin Lymphatic Flow Regulates Dendritic Cells to Mediate Lymph Node Fibroblast Alterations and Immune Responses in Lupus
Mir Howlader¹ and Theresa Lu², ¹Weill Cornell Medical College, Brooklyn, NY, ²Hospital for Special Surgery, NEW YORK, NY
Background/Purpose: Lupus is a chronic autoimmune disease with a global loss of self-tolerance. Lupus patients are photosensitive where exposure to even ambient sunlight results in…
Abstract Number: 0059 • ACR Convergence 2025
Formyl Peptide Receptor 1 (FPR1) Influences Arthritis Severity in a Sex- and Compartment-Specific Manner
Ryan D. Stultz¹, Payton Hermanson², Noelle Mullin³, Simeon Ramsey³ and Christian Lood², ¹University of Washington, Division of Rheumatology, Seattle, WA, ²University of Washington, Seattle, WA, ³Pfizer Inc., Cambridge, MA
Background/Purpose: Rheumatoid arthritis (RA) is a chronic, systemic inflammatory disease that disproportionately affects females over males (3:1). Although sex-based immune differences have been documented, particularly…
Abstract Number: 1823 • ACR Convergence 2025
Genome-Wide DNA Methylation Analysis in Familial Mediterranean Fever
Kader Cetin Gedik¹, Desire Casares Marfil², Busra Baser Taskin³, Elif Kilic Konte⁴, Sezgin Sahin⁴, Mckenna Bowes², Ferhat Guzel⁵, Micol Romano⁶, Ozgur Kasapcopur⁷, Nuray Aktay Ayaz³, Erkan Demirkaya⁶ and Amr Sawalha², ¹UPMC Children's Hospital of Pittsburgh/University of Pittsburgh, Pittsburgh, PA, ²University of Pittsburgh, Pittsburgh, PA, ³Istanbul University Medical School, Istanbul, Turkey, ⁴Istanbul University Cerrahpasa Medical School, Istanbul, Turkey, ⁵Department of Research and Development, Ant Biotechnology, Istanbul, Turkey, ⁶University of Western Ontario, London, ON, Canada, ⁷Istanbul University-Cerrahpasa, Cerrahpasa Medical School, istanbul, Turkey
Background/Purpose: Familial Mediterranean fever (FMF) is an autoinflammatory disease most commonly associated with biallelic mutations in the MEFV gene. Patients carrying the same pathogenic variant…
Abstract Number: 0926 • ACR Convergence 2025
Discovery and Characterization of SIM0711: a Potent and Selective IRAK4 PROTAC with Improved Efficacy and Safety
Minyun Zhou¹, Peng Gu², Mengyu Wang³, Yuxi Yan², Li Sun³, Yiling Chen³, Xin Wang³, Feng Tang¹, Shunwei Zhu² and Xiaofeng Zhao⁴, ¹State Key Laboratory of Neurology and Oncology Drug Development, Simcere Pharmaceutical group, Nanjing, ²State Key Laboratory of Neurology and Oncology Drug Development, Simcere Pharmaceutical Group, Shanghai, China (People's Republic), ³State Key Laboratory of Neurology and Oncology Drug Development, Simcere Pharmaceutical Group, Nanjing, China (People's Republic), ⁴State Key Laboratory of Neurology and oncolog Drug Development, Simcere Pharmaceutical Group, Nanjing, China (People's Republic)
Background/Purpose: IRAK4 plays a pivotal role in the innate immune response by acting downstream of Toll-like receptors (TLRs) and the interleukin-1 receptor (IL-1R), with both…
Abstract Number: 0049 • ACR Convergence 2025
Enhanced Src Homology Region 2 Domain-containing Phosphatase 1 Activity Ameliorates Murine Inflammatory Arthritis Through the Innate Immune System
Jun Li, Katalin Mikecz and Adrienn Markovics, Rush University Medical Center, Chicago
Background/Purpose: Src homology region 2 domain-containing phosphatase 1 (SHP-1) is a cytoplasmic protein tyrosine phosphatase expressed in hematopoietic cells (PMID9069265). SHP-1 is a key negative…
Abstract Number: 1814 • ACR Convergence 2025
Trapped in the NET: Impaired DNase function and targeted antibodies in the pathogenesis of pediatric lupus nephritis
Sohei Makita¹, Joyce Hui-Yuen², Bharati Matta³, Betsy Barnes⁴, Jenna Battaglia⁵, Tatiana Borja⁶, Boris Reizis⁷, Lydia Thomas⁸ and Kim Simpfendorfer⁹, ¹NYU, New York, ²North Shore LIJ Health System, Great Neck, NY, ³The Feinstein Institutes for Medical Research, Manhasset, NY, ⁴Northwell Health, Manhasset, NY, ⁵Northwell Health, Manhasset, ⁶Northwell Health- Cohen Children’s Medical Center, Elmhurst, NY, ⁷New York University Grossman School of Medicine, New York, NY, ⁸Northwell Health - Cohen Children's Medical Center, Lake Success, NY, ⁹Feinstein Institutes for Medical Research, Manhasset, NY
Background/Purpose: Up to 80% of patients with pediatric systemic lupus erythematosus (pSLE) can present with renal abnormalities. Treatment of pSLE is often difficult and includes…
Abstract Number: 0924 • ACR Convergence 2025
Human Serum Albumin Co-Modified with Malondialdehyde-Acetaldehyde and Citrulline Bind Multiple Scavenger Receptors and Alter Cellular Morphology
Lauren Klingemann¹, Michael Duryee¹, Nozima Aripova¹, Wenxian Zhou², Hannah Johnson¹, Breanna Butler¹, Carlos Hunter¹, Ted Mikuls¹ and Geoffrey Thiele¹, ¹University of Nebraska Medical Center, Omaha, NE, ²University of Nebraska Medical Center, Bellevue, NE
Background/Purpose: Post-translational modifications (PTMs) of self-proteins are implicated in the pathogenesis of rheumatoid arthritis (RA). The PTMs, malondialdehyde-acetaldehyde (MAA), citrulline (CIT), and the co-modification of…
Abstract Number: 0005 • ACR Convergence 2025
LBL-047, A First-In-Class Anti-BDCA2/TACI Fusion Protein, Inhibits the Function of Both pDCs and B cells
Fengxia Li¹, Jianming Sun¹, Hailin Wang¹, Yan Zhu¹, Xiaoxiao Liu¹, Jing Li¹, Yurong Qin¹, Guojin Wu¹, Jing Guan¹, Min Chen¹, Jordan Zhu², Xiaoqiang Kang¹, Xiao Huang¹ and Hong Ling¹, ¹Nanjing Leads Biolabs Co., Ltd., Nan Jing, China (People's Republic), ²Nanjing Leads Biolabs Co., Ltd., Nan Jing
Background/Purpose: Blood dendritic cell antigen 2 (BDCA2) is specifically expressed on pDCs whose uncontrolled production of type I IFN play a crucial role in the…
Abstract Number: 1800 • ACR Convergence 2025
The Role of Nociceptor-Expressed Piezo2 in Nervous System Immune Cell Infiltration in a Mouse Model of Osteoarthritis
Natalie Adamczyk¹, Terese Geraghty², Shingo Ishihara³, alia obeidat², Jun Li², Anne-Marie Malfait² and Rachel Miller¹, ¹Rush University Medical Center, Chicago, IL, ²Rush University Medical Center, Chicago, ³Rush University, Chicago
Background/Purpose: Osteoarthritis is one of the leading causes of chronic pain and disability worldwide with 500 million people affected. We have previously reported that nociceptor-conditional…
Abstract Number: 0925 • ACR Convergence 2025
Pathogenic role of SPP1+ macrophages in Rheumatoid Arthritis
Megan M. Hanlon¹, Catherine Manning¹, Kevin Wei¹, Ursula Fearon² and Ellen M. Gravallese³, ¹Brigham and Women's Hospital at Harvard Medical School, Boston, MA, ²Trinity College Dublin, Dublin, Dublin, Ireland, ³Brigham and Women's Hospital, Harvard Medical School, Chestnut Hill, MA
Background/Purpose: Synovial tissue macrophages (STMs) represent a mixed population of cells contributing to the pathogenesis of rheumatoid arthritis (RA). We identified an enrichment of Secreted…

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