Abstracts tagged "Animal Model"

Abstract Number: 1806 • ACR Convergence 2025
Sex differences in knee joint microbial DNA of C57BL/6 mice and the effect of cross-sex microbiome transplantation
Veera Durga Vaishnavi Kurra¹, Ausitn Lopez², Aleksander Szymczak³, Gabriella Dyson³, Pratibha Dube⁴, Padmaja Mehta-d'Souza² and Matlock Jeffries³, ¹University of Oklahoma Health Sciences Center, Oklahoma City, OK, ²Oklahoma Medical Research Foundation, Oklahoma City, ³Oklahoma Medical Research Foundation, Oklahoma City, OK, ⁴Oklahoma Medical Research Foundation, Edmond, OK
Background/Purpose: Recent studies have suggested an association between the gut microbiome and osteoarthritis. We have previously shown that the joint microbiome is derived at least…
Abstract Number: 0999 • ACR Convergence 2025
Myositis Induced by Histidyl-Transfer tRNA Synthetase is Exacerbated by Membranopathy and Suppressed by Regulatory T Cells
Samantha Coss¹, Nicholas Young², Shane Bruckner³, Braden Zeno⁴, Gianni Giarrano⁵, Hannah Bulgart⁶, Paula Clemens⁷, Jisna Paul², Chester V. Oddis⁸, noah weisleder⁹, Dana Ascherman⁸ and Wael Jarjour¹⁰, ¹Nationwide Children's Hospital, Columbus, OH, ²Division of Rheumatology and Immunology, Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, Columbus, OH, ³OSU, Columbus, OH, ⁴Ohio State University, upper arlington, OH, ⁵Division of Rheumatology, Nationwide Children's Hospital, Columbus, OH, ⁶Department of Molecular and Cellular Biochemistry, University of Kentucky College of Medicine, Lexington, KY, ⁷Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, ⁸University of Pittsburgh, Pittsburgh, PA, ⁹University of Kentucky, Lexington, KY, ¹⁰The Ohio State University, Columbus, OH
Background/Purpose: Idiopathic inflammatory myopathies (IIMs) are a heterogeneous group of autoimmune disorders targeting muscle as well as extra-muscular organs. Among the most common autoantibodies associated…
Abstract Number: 0933 • ACR Convergence 2025
Spatial Transcriptomics Reveal Altered Immune Dynamics Regulating Placental Development In a Humanized-TLR8 Mouse Model of Spontaneous Anti-Phospholipid Antibody Induced Pregnancy Loss
Yunwei Xia¹, Paul Hoover², Arnon Arazi³ and Anne Davidson¹, ¹Feinstein Institutes for Medical Research, Manhasset, NY, ²Brigham and Women's Hospital, Boston, MA, ³Feinstein Institutes for Medical Research, Acton, MA
Background/Purpose: TLR8 has been implicated in adverse outcomes of human pregnancy. We previously reported a mouse model of spontaneous aPL-induced pregnancy loss in Sle1 mice…
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: 1804 • ACR Convergence 2025
Pharmacology of LEVI-04, a novel treatment for OA
Simon Westbrook¹ and Kerry af Forselles², ¹Levicept Ltd, Sandwich, United Kingdom, ²Levicept, Sandwich, United Kingdom
Background/Purpose: LEVI-04 is a novel fusion protein comprising the extracellular domain of p75 neurotrophin receptor (p75NTR) coupled to IgG1 Fc, being developed for the treatment…
Abstract Number: 0976 • ACR Convergence 2025
LMPTP Drives Fibrosis in Systemic Sclerosis via TGF-beta Signaling Activation
Yuan Zhan¹, Colton Sanders², Michael Diaz², Jinmin Miao³, Arminja Kettenbach⁴, Zhong-Yin Zhang⁵, Paul Wolters⁶, Francesco Boin⁷, Stephanie Stanford² and Nunzio Bottini⁸, ¹Cedars-Sinai Medical Center, Los Angeles, CA, ²University of California San Diego, San Diego, CA, ³Purdue University, West Lafayette, IN, ⁴Geisel School of Medicine at Dartmouth, Lebanon, NH, ⁵Purdue University, Department of Medicinal Chemistry and Molecular Pharmacology, West Lafayette, IN, ⁶University of California San Francisco, San Francisco, CA, ⁷Cedars-Sinai Medical Center, Beverly Hills, CA, ⁸Cedars Sinai Medical Center, Beverly Hills, CA
Background/Purpose: The identification of effective and safe anti-fibrotic agents is a critical unmet need in systemic sclerosis (SSc). Although fibrosis in SSc is driven by…
Abstract Number: 0907 • ACR Convergence 2025
Cross-Species Cellular Mapping and Humanization of Fcγ Receptors to Advance Antibody Modeling
Karel Van Damme¹, Dorine Sichien², Katrien Van der Borght³, Sofie Van Gassen³, Elisabeth De Leeuw³, Victor Bosteels⁴, Joseph Jorssen⁵, Seppe De Winter⁶, Alan Korman⁷, Fabio Benigni⁸, Davide Corti⁸, Ariane Morel⁹, Eric Vivier⁹, Hamida Hammad³, Dirk Elewaut¹⁰, Fabiane Sonego¹¹, Kader Thiam¹¹, Sofie Voet², bianca Balbino¹² and Bart Lambrecht³, ¹Ghent University, Ghent, ²argenx, Ghent, Belgium, ³Ghent University, Ghent, Belgium, ⁴The Francis Crick Institute, London, United Kingdom, ⁵Liège Université, Liege, Belgium, ⁶KU Leuven, Leuven, Belgium, ⁷Vir Biotechnology, San Francisco, ⁸Vir Biotechnology, Bellinzona, Switzerland, ⁹Innate Pharma, Marseille, France, ¹⁰VIB Center for Inflammation Research, and Ghent University Hospital, Department of Rheumatology, Ghent, Belgium, ¹¹genOway, Lyon, France, ¹²argenx, Gent, Belgium
Background/Purpose: Fc receptors mediate the effector functions of antibodies by linking adaptive and innate immunity. Immunoglobulin G (IgG), the most abundant antibody in circulation and…
Abstract Number: 0009 • ACR Convergence 2025
MRT-6160, a VAV1-Directed Molecular Glue Degrader, Attenuates T and B Cell Effector Functions and Inhibits Disease Progression in a Spontaneous MRL-Faslpr Mouse Model
Adam Cartwright¹, Lucas Gyger¹, Foram Desai², Shailee Vora², Anna Kostikova¹, Xudong Wang², Peter Trenh², Katie May², Sophia Nguyen², Chris King², Daniel Lam², Xavi Lucas¹, Mary Zlotosch², Elisa Liardo¹, Daric Wible², Ilaria Lamberto², Bradley Demarco², Debora Bonenfant¹, Sharon Townson², Eswar Krishnan², Filip Janku², John Castle¹, Laura McAllister¹, Alison Paterson² and Marisa Peluso², ¹Monte Rosa Therapeutics, Basel, Switzerland, ²Monte Rosa Therapeutics, Boston, MA
Background/Purpose: VAV1, an immune cell restricted guanine nucleotide exchange factor (GEF) and scaffolding protein, plays a critical role in mediating T- and B-cell receptor activity.…
Abstract Number: 1803 • ACR Convergence 2025
Patching of Damaged Meniscus and Cartilage of Osteoarthritic Animals by MM-II, a Dispersion of Empty Large Multilamellar Liposomes
Roni Wechsler and Rany Rotem, Moebius Medical, Tel Aviv, Israel
Background/Purpose: Cartilage wear in knee osteoarthritis (KOA) is linked to reduced boundary lubrication. Occasionally, the meniscus also wears out in KOA, potentially accelerating the disease.…
Abstract Number: 0965 • ACR Convergence 2025
Inhibition of Nicotinamide N-Methyltransferase Reverses Fibroblast Activation via Epigenetic and Metabolic Remodeling in Systemic Sclerosis
Kamal Saba¹, Rong Huang², Priyanka Verma¹, M Asif Amin¹ and John Varga¹, ¹University of Michigan, Ann Arbor, MI, ²Purdue University, West Lafayette, IN
Background/Purpose: Systemic sclerosis (SSc) is characterized by progressive fibrosis driven by sustained fibroblast activation and senescence. Nicotinamide N-methyltransferase (NNMT), a SAM-dependent enzyme, is upregulated in…
Abstract Number: 0871 • ACR Convergence 2025
The gut microbiome shapes MTX pharmacology and is linked to treatment outcomes
Vanya Sofia Villa Soto¹, Diego Orellana², Erin Reilly³, Chloe Heath², Alexandra Degraeve², Mohana Mukherjee², darren Dumlao², Rebecca Blank⁴, steven Yu², Noah Perlmutter², Judith Ashouri², Jose Scher⁵, andrew Patterson³, Peter Turnbaugh² and Renuka Nayak⁶, ¹University of California, San Francisco, San Francics, CA, ²University of California, San Francisco, San Francisco, CA, ³Pennsylvania State University, University Park, PA, ⁴NYU Langone Health, New York, NY, ⁵New York University School of Medicine, New York, NY, ⁶University of California, San Francisco (UCSF), San Francisco, CA
Background/Purpose: Despite advances in targeted therapeutics, methotrexate (MTX) remains the first-line therapy in the treatment of rheumatoid arthritis (RA) and other inflammatory arthritides. However, more…
Abstract Number: 1794 • ACR Convergence 2025
OA-associated pain sensitivity is reduced in OA-protected MRL/MpJ mice, partially mediated by the gut microbiome, and transferable via microbiome transplantation
Gabriella Dyson¹, Montana Barrett¹, Nicholas Hanebutt¹, Aleksander Szymczak², Cindy Miranda Brawner¹, Pratibha Dube³, Ausitn Lopez¹, Padmaja Mehta-d'Souza¹ and Matlock Jeffries², ¹Oklahoma Medical Research Foundation, Oklahoma City, ²Oklahoma Medical Research Foundation, Oklahoma City, OK, ³Oklahoma Medical Research Foundation, Edmond, OK
Background/Purpose: MRL/MpJ (MRL) mice are protected from developing post-traumatic osteoarthritis (OA) histologic changes. We have previously shown the gut microbiome to play a key role…
Abstract Number: 0961 • ACR Convergence 2025
Retinoic acid-related orphan receptor-α: A novel upstream regulator of Hippo signaling and potential therapeutic target in fibrosis
Cuong Tran-Manh¹, Thuong Trinh-Minh², Christoph Liebel³ and Jörg Distler⁴, ¹Department of Rheumatology, University Hospital Düsseldorf, Medical Faculty of Heinrich-Heine University. Hiller Research Center, University Hospital Düsseldorf, Medical Faculty of Heinrich-Heine University., Düsseldorf, Nordrhein-Westfalen, Germany, ²Clinic for Rheumatology University Hospital Düsseldorf, Medical Faculty of Heinrich Heine University, Düsseldorf, Germany; Hiller Research Center, University Hospital Düsseldorf, Medical Faculty of Heinrich Heine University, Düsseldorf, Nordrhein-Westfalen, Germany, ³Department of Rheumatology, University Hospital Düsseldorf, Medical Faculty of Heinrich-Heine University. Hiller Research Center, University Hospital Düsseldorf, Medical Faculty of Heinrich-Heine University., Düsseldorf, Germany, ⁴University Hospital Duesseldorf and HHU, Duesseldorf, Germany
Background/Purpose: Retinoic acid-related orphan receptor-α (RORα) is a nuclear transcription factor implicated in immune regulation, circadian rhythm, and metabolism. However, its role in fibrotic diseases…
Abstract Number: 0870 • ACR Convergence 2025
Same Model, Different Results: Vendor and Microbiome Influence Reproducibility in Collagen Induced Arthritis
Brenda Seymour¹, Brendan Allen² and Kristine Kuhn³, ¹University of Colorado School of Medicine, Denver, CO, ²University of Colorado School of Medicine, Aurora, CO, ³²⁰²² - ²⁰²³ / Adult/ University of Colorado, Aurora, CO
Background/Purpose: Although collagen-induced arthritis (CIA) in mice is a useful tool for studying inflammatory arthritis, it is a highly variable model with inconsistent disease severity…
Abstract Number: 1786 • ACR Convergence 2025
SEV-101, A Regenerative Exosome Therapeutic for the Treatment of Osteoarthritis
Beth Lindborg¹, Amanda Vegoe², Michael Williams¹, Parthasarathy Rangarajan³, Marc Tompkins⁴, Sabarinathan Ramachandran⁵ and Timothy O'Brien⁶, ¹Sarcio, Inc., St. Paul, ²Department of Veterinary Population Medicine and Stem Cell Institute, University of Minnesota, Sarcio, Inc, St. Paul, ³Schulze Diabetes Institute, Department of Surgery, University of Minnesota, Minneapolis, ⁴Department of Orthopedic Surgery, University of Minnesota, Sarcio, Inc., Minneapolis, ⁵Schulze Diabetes Institute, Department of Surgery, University of Minnesota, Minneapolis, MN, ⁶Department of Veterinary Population Medicine and Stem Cell Institute, University of Minnesota, Sarcio, Inc, Minneapolis
Background/Purpose: Osteoarthritis (OA) is a chronic, debilitating joint disease affecting 595 million people worldwide, including over 32 million in the United States. It is characterized…

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