Abstracts tagged "macrophages"

Abstract Number: LB12 • ACR Convergence 2025
Randomized, Double-Blind, Placebo-Controlled Phase IIa Trial of an Innovative Intra-Articular Apoptotic Cell Therapy in Knee Osteoarthritis (OA): 3-Month Positive Outcomes and Identification of Responder Population (NCT06233474)
Philip Conaghan¹, Bernt Husøy², Cecilie Rovsing³, Sidsel L Boll⁴, Liliana Groppa⁵, Amir Oron⁶, Asger Bihlet⁷, Ali Mobasheri⁸, Tobias Winkler⁹, Dror Mevorach¹⁰, Einat Galamidi¹¹, Lital Weinfeld-Bergman¹², Lior Binder¹² and Oren Hershkovitz¹¹, ¹University of Leeds, Leeds, United Kingdom, ²Sanos Clinic, Herlev, Denmark, ³Sanos Clinic, Gandrup, Denmark, ⁴Sanos Clinic, Vejle, Denmark, ⁵T. Mosneaga Republican Clinical Hospital, Chisinau, Moldova, ⁶Kaplan MC, Rehovot, Israel, ⁷NBCD A/S, Soeborg, Denmark, ⁸University of Oulu, Oulu, Finland, ⁹Charité - Universitätsmedizin Berlin, Berlin, Germany, ¹⁰Hadassah-University Hospital, Jerusalem, Israel, ¹¹Enlivex Therapeutics, Ness Ziona, Israel, ¹²Enlivex Therapeutics, Nes Ziona, Israel
Background/Purpose: OA is a prevalent disabling disease growing globally due to aging populations and rising obesity. In primary OA, the effects of joint tissue damage accumulate with age,…
Abstract Number: 1844 • ACR Convergence 2025
Disease-Associated Macrophages Express an Injury-Associated Gene Program and Localize to Distinct Compartments in Proliferative and Mixed Histologic Classes of Lupus Nephritis
Paul Hoover¹, Rollin Leavitt², Jill Buyon³, Jennifer Anolik⁴, Jennifer Barnas⁵, Judith James⁶, Joel Guthridge⁶, Michelle Petri⁷, Betty Diamond⁸, Soumya Raychaudhuri¹, Nir Hacohen⁹, Anne Davidson¹⁰ and Arnon Arazi¹¹, ¹Brigham and Women's Hospital, Boston, MA, ²Broad Institute, Boston, MA, ³NYU Grossman School of Medicine, New York, NY, ⁴University of Rochester Medical Center, Rochester, NY, ⁵University of Rochester, Rochester, NY, ⁶Oklahoma Medical Research Foundation, Oklahoma City, OK, ⁷Johns Hopkins University School of Medicine, Timonium, MD, ⁸The Feinstein Institutes for Medical Research, Manhasset, NY, ⁹Broad Institute, Cambridge, MA, ¹⁰Feinstein Institutes for Medical Research, Manhasset, NY, ¹¹The Feinstein Institutes for Medical Research, Manhasset
Background/Purpose: In collaboration with the AMP-RA/SLE network, we identified disease-associated macrophages (D-Macs) in kidney biopsies from 155 patients with active lupus nephritis (LN) and 30…
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…
Abstract Number: 1793 • ACR Convergence 2025
Sex-associated changes to synovial macrophages in the aging joint
Matthew Dapas¹, Erica De Jong², Yidan Wang³, Cally Mills³, Samuel Dowling⁴, Tyler Therron⁵, Carla Marie Cuda³, Dawn Bowdish⁶ and Deborah Rachelle Winter⁷, ¹Northwestern University Feinberg School of Medicine, Chicago, IL, ²McMaster Immunology Research Centre, Hamilton, ON, Canada, ³Northwestern University, Chicago, IL, ⁴Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, ⁵Northwestern Feinberg School of Medicine, Chicago, IL, ⁶McMaster University, Hamilton, ON, Canada, ⁷Northwestern University, Skokie, IL
Background/Purpose: Macrophages are found in nearly every tissue of the body where they maintain homeostasis and drive healthy immune response. However, macrophages are dysregulated with…
Abstract Number: 0921 • ACR Convergence 2025
Fibrinogen Co-Modified with Malondialdehyde-Acetaldehyde and Citrulline Promotes Pro-Inflammatory Macrophage Differentiation Through p38 and NF-κB Signaling
Hannah Johnson¹, Wenxian Zhou², Michael Duryee¹, Carlos Hunter¹, Geoffrey Thiele¹ and Ted Mikuls¹, ¹University of Nebraska Medical Center, Omaha, NE, ²University of Nebraska Medical Center, Bellevue, NE
Background/Purpose: Citrulline (CIT) and malondialdehyde-acetaldehyde (MAA) co-adduct native proteins in RA tissues to create a dual pro-inflammatory and pro-fibrotic milieu. Our previous work demonstrated that…
Abstract Number: 1787 • ACR Convergence 2025
Spatial and Quantitative Semiautomated Image Analysis of Synovial Biopsies Studied Using a Novel High-Plex Immunofluorescence Platform
Estefania Quesada-Masachs¹, Luis Peñaranda Bolaño¹, Aakriti Arora², Jessica Murillo-Saich³, Edward Lo⁴, Tad George⁴, Daniel Tanoeihusada⁴, Sara McArdle⁵ and Monica Guma⁶, ¹University of Miami, Miami, FL, ²University of Miami / Jackson Memorial Hospital, Miami, FL, ³University of California, San Diego, San Diego, CA, ⁴RareCyte, Seattle, WA, ⁵La Jolla Institute for Immunology, La Jolla, CA, ⁶University of California San Diego, San Diego, CA
Background/Purpose: Although not part of the formal ACR criteria for RA, PsA, or OA, synovial pathology can be a helpful tool in clinical practice. Histopathologic…
Abstract Number: 0908 • ACR Convergence 2025
E-602 (Efgitasialase alfa) Enhances Memory B Cell Depletion and Reduces Profibrotic Macrophages via Desialylation in Autoimmune Disease
Hrishikesh Mehta¹, Vijayashree Mysore¹, Chih-Hsing Chou¹, Lizhi Cao¹, Rui Liu², Tianrui Fan², Jijun Yuan², James Broderick¹ and Li Peng¹, ¹Palleon Pharmaceuticals, Waltham, MA, ²Shanghai Henlius Biotech, Shanghai, China (People's Republic)
Background/Purpose: Abnormal cell surface glycosylation has been observed in various autoimmune diseases, including systemic lupus erythematosus (SLE) and membranous nephropathy. Among these glycan modifications, sialoglycans…
Abstract Number: 1779 • ACR Convergence 2025
Citrullinated and Malondialdehyde-Acetaldehyde Modified Fibrinogen Activates Macrophages and Induces Inflammatory Responses in Coronary Endothelium
Wenxian Zhou¹, Hannah Johnson², Michael Duryee², Engle Sharp², Carlos Hunter², Tate Johnson², Mabruka Alfaidi², Daniel Anderson³, Kishore Bidasee², Geoffrey Thiele² and Ted Mikuls², ¹University of Nebraska Medical Center, Bellevue, NE, ²University of Nebraska Medical Center, Omaha, NE, ^30587964, Durham, NC
Background/Purpose: Endothelial cell (EC) dysfunction is a key driver of cardiovascular (CV) complications in rheumatoid arthritis (RA), yet mechanisms underlying EC dysfunction in RA are…
Abstract Number: 0893 • ACR Convergence 2025
Transcriptomic insights into GCA compared to clinically diverse controls: Inflammation, Aging, Therapeutic Targets and the role of SPP1 in the temporal artery
Ingrid Lindquist¹, Alisha Eskew², Dongsoek Choi³, David Wilson⁴, Diva Salomao⁵, Hillary Stiefel⁴, Daniel Albert⁴, Kiana Vakil-Gilani⁶, Daniela Ghetie⁷, James Rosenbaum⁸ and Marcia Friedman⁹, ¹Portland VA Medical Center, Portland, OR, ²OHSU, Portland, OR, ³OHSU, Portland, ⁴Casey Eye Institute OHSU, Portland, OR, ⁵Mayo Clinic, Rochester, MN, ⁶PeaceHealth, Portland, OR, ⁷OHSU, Lake Oswego, OR, ⁸Legacy Devers Eye Institute, Portland, OR, ⁹Immpact Bio, Beaverton, OR
Background/Purpose: Giant cell arteritis (GCA) is the most common vasculitis in people over 50 years old and is a clinical diagnosis bolstered by non-specific inflammatory…
Abstract Number: 1774 • ACR Convergence 2025
Citrullinated and Malondialdehyde-Acetaldehyde Co-Modified Fibrinogen Activates Macrophages and Induces Pro-Fibrotic shift in Coronary Endothelium Phenotype
Nozima Aripova¹, Wenxian Zhou², Hannah Johnson¹, Michael Duryee¹, Kimberley Sinanan¹, Carlos Hunter¹, Tate Johnson¹, Mabruka Alfaidi¹, Daniel Anderson³, Kishore Bidasee¹, Geoffrey Thiele¹ and Ted Mikuls¹, ¹University of Nebraska Medical Center, Omaha, NE, ²University of Nebraska Medical Center, Bellevue, NE, ^30587964, Durham, NC
Background/Purpose: Rheumatoid arthritis (RA) patients are at increased risk for developing heart failure with preserved ejection fraction (HFpEF), which is characterized by impaired left ventricular…
Abstract Number: 0865 • ACR Convergence 2025
Spatial Transcriptomic Analysis of Calcinosis Cutis in Dermatomyositis Uncovers Disease-Associated Pathways Involving IL-6, Tissue Remodeling, and Osteopontin
Cassie Parks¹, York Wang¹, Lisa Christopher-Stine², Jemima Albayda², Joel Sunshine³, Shira Ziegler¹ and Chris Mecoli¹, ¹Johns Hopkins University School of Medicine, Baltimore, MD, ²Johns Hopkins University, Baltimore, MD, ³Johns Hopkins University School of Medicine, Baltimore
Background/Purpose: Calcinosis cutis affects up to 20% of adults with dermatomyositis (DM), causing significant morbidity including recurrent infections, incapacitating pain, and functional impairment. Current management…
Abstract Number: 1763 • ACR Convergence 2025
Spatial Organization and Function of Disease-Associated Macrophages in Lupus Nephritis: Insights from Cross-Species Analyses
Paul Hoover¹, Chirag Raparia², Rollin Leavitt³, Nir Hacohen⁴, Arnon Arazi⁵ and Anne Davidson², ¹Brigham and Women's Hospital, Boston, MA, ²Feinstein Institutes for Medical Research, Manhasset, NY, ³Broad Institute, Boston, MA, ⁴Broad Institute, Cambridge, MA, ⁵The Feinstein Institutes for Medical Research, Manhasset
Background/Purpose: Myeloid cells are linked to kidney injury in lupus nephritis (LN) but lack targeted therapies, underscoring the need to better understand myeloid biology in…
Abstract Number: 0812 • ACR Convergence 2025
Anti-CD206 CAR T Cell Immunotherapy Mitigates Dermal Pathology in Systemic Sclerosis
Chanhyuk Park¹, Helen Jarnagin², Asmaa Mohamed³, Noelle Kosarek⁴, Owen Wilkins¹, Fred Kolling¹, Yina Huang¹, Michael Whitfield⁵ and Patricia Pioli¹, ¹Geisel School of Medicine at Dartmouth, Lebanon, NH, ²Dartmouth College, Lebanon, NH, ³Geisel School of Medicine at Dartmouth, Charlottesville, VA, ⁴Dartmouth Geisel School of Medicine, Lebanon, NH, ⁵Geisel School of Medicine, Lebanon, NH
Background/Purpose: Systemic sclerosis (SSc) is a progressive, chronic multi-system disorder of unknown etiology that is characterized by immune dysfunction, fibrosis, and loss of dermal white…
Abstract Number: 1650 • ACR Convergence 2025
Malondialdehyde-Acetaldehyde and Citrulline Modified Proteins are Overexpressed in Cardiac Tissues in Rheumatoid Arthritis-Associated Heart Failure and Mediate Endothelial Cell Dysfunction
Hannah Johnson¹, Wenxian Zhou², Michael Duryee¹, Engle Sharp¹, Kimberley Sinanan¹, Carlos Hunter¹, Tate Johnson¹, Mabruka Alfaidi¹, Daniel Anderson³, Geoffrey Thiele¹ and Ted Mikuls¹, ¹University of Nebraska Medical Center, Omaha, NE, ²University of Nebraska Medical Center, Bellevue, NE, ^30587964, Durham, NC
Background/Purpose: Previous reports show that malondialdehyde-acetaldehyde (MAA) adducts are overexpressed in RA, especially in joint/lung tissues, and that they colocalize with citrulline (CIT). This is…
Abstract Number: 0747 • ACR Convergence 2025
Patterns of Macrophage Polarization Induced by Serum from Patients with Giant Cell Arteritis and Takayasu’s Arteritis
Irene Carrión-Barberà¹, Ryan D. Stultz², David Cuthbertson³, Nader Khalidi⁴, Curry Koening⁵, Carol Langford⁶, Carol McAlear⁷, Paul Monach⁸, Larry Moreland⁹, Christian Pagnoux¹⁰, Philip Seo¹¹, Kenneth Warrington¹², Peter Merkel⁷ and Christian Lood¹³, ¹Department of Rheumatology. Hospital del Mar, Barcelona, Spain, ²University of Washington, Division of Rheumatology, Seattle, WA, ³University of South Florida, Tampa, ⁴Department of Medicine, McMaster University and St. Joseph’s Healthcare, Hamilton, Canada, ⁵University of Texas Dell Medical School, Austin, TX, ⁶Cleveland Clinic, Moreland Hills, OH, ⁷University of Pennsylvania, Philadelphia, PA, ⁸VA Boston Healthcare System, Boston, MA, ⁹University of Colorado, Denver, CO, ¹⁰Mount Sinai Hospital, University Health Network, Toronto, and Canadian Vasculitis Research Network (CanVasc), Toronto, ON, Canada, ¹¹Johns Hopkins University, Baltimore, MD, ¹²Mayo Clinic, ROCHESTER, MN, ¹³University of Washington, Division of Rheumatology, Seattle
Background/Purpose: Macrophages play a central role in the pathogenesis of large-vessel vasculitides, including giant cell arteritis (GCA) and Takayasu’s arteritis (TAK). Characterizing patterns of macrophage…

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