Abstracts tagged "Fibroblasts, Synovial"

Abstract Number: LB05 • ACR Convergence 2025
ER Stress-Induced ATP2A3 Drives Rheumatoid Arthritis via Activation of STING Signaling
yujie cai, Nanfang hospital, Guangzhou, China (People's Republic)
Background/Purpose: Rheumatoid arthritis (RA) is an autoimmune disease characterized by persistent synovial inflammation and joint bone destruction. Endoplasmic reticulum (ER) stress plays an important role…
Abstract Number: 0797 • ACR Convergence 2025
Spatial transcriptomics identifies density-sensing fibroblasts in synovial lining
Sonia Presti¹, Kseniia Anufrieva², Ce Gao³, Sean Prell², Philip Blazar², Jeffrey Lange², Morgan Jones², Mihir Wechalekar⁴, Michael Brenner², Ilya Korsunsky⁵, Shideh Kazerounian² and Kevin Wei⁶, ¹Standford University, Stanford, ²Mass General Brigham, Boston, ³Division of Rheumatology, Inflammation and Immunity, DOM, BWH; Harvard Medical School, Boston, MA, ⁴Flinders Medical Centre, Adelaide, Australia, ⁵Division of Rheumatology, Inflammation and Immunity, DOM, BWH; Division of Genetics, DOM, BWH; Harvard Medical School, Boston, MA, ⁶Brigham and Women's Hospital at Harvard Medical School, Boston, MA
Background/Purpose: The synovial lining is crucial for joint homeostasis, forming a barrier and producing lubricants through specialized fibroblasts. These fibroblasts differ from sublining fibroblasts, which…
Abstract Number: 0798 • ACR Convergence 2025
Inhibition of Wnt Signaling Attenuates Inflammatory Arthritis Severity
Alisa Mueller¹, Angela Zou², Lucy-Jayne Marsh³, Samuel Kemble³, Saba Nayar³, Gerald Watts⁴, Cassandra Murphy⁵, Emily Taylor³, Triin Major³, David Gardner⁶, Christopher Buckley⁷, Kevin Wei⁸, Soumya Raychaudhuri⁵, ilya Korsunsky⁵, Andrew Filer⁹, Adam Croft¹⁰ and Michael Brenner¹¹, ¹Stanford University and VA Palo Alto Health Care System, Stanford, CA, ²Harvard Medical School, Boston, MA, ³University of Birmingham, Birmingham, United Kingdom, ⁴Harvard Medical School, Brookline, MA, ⁵Brigham and Women's Hospital, Boston, MA, ⁶University of Birmingham, Havelock North, New Zealand, ⁷University of Oxford, Oxford, United Kingdom, ⁸Brigham and Women's Hospital at Harvard Medical School, Boston, MA, ⁹The University of Birmingham, Birmingham, United Kingdom, ¹⁰University of Birmingham, Hagley, Stourbridge, United Kingdom, ¹¹Brigham and Women's Hospital, Harvard Medical School, Newton, MA
Background/Purpose: Fibroblasts are critical in promoting pathogenic synovial inflammation and bone erosion in rheumatoid arthritis (RA). Moreover, recent studies have pointed to their potential contribution…
Abstract Number: 0472 • ACR Convergence 2025
Detrimental Effects of Umbilical Cord Blood-derived Mesenchymal Stem Cells Intra-articular Injections on Pannus Invasiveness
Sung Eun Kim¹, Hye Lim Kang¹, Min Jung Kim², Hyung-Sik Kim³ and Kichul Shin⁴, ¹Division of Rheumatology, Department of Internal Medicine, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea, ²Seoul Metropolitan Government Boramae Medical center, Dongjak-gu, Seoul, South Korea, ³Department of Oral Biochemistry, Pusan National University School of Dentistry, Yangsan, Republic of Korea, ⁴Seoul National University, Seoul, South Korea
Background/Purpose: Studies have shown that mesenchymal stem cell (MSC) infusion ameliorates arthritis in animal models. However, the first-pass effect in the lung has directed attention…
Abstract Number: 2613 • ACR Convergence 2025
Ga-FAPI-04 PET/CT reveals increased fibroblast activation in synovial and enthesial tissues of psoriasis patients with arthralgia and predicts the development of psoriatic arthritis
Giulia Corte¹, Koray Tascilar², armin Atzinger³, Alp Temiz², Melek Yalcin Mutlu⁴, Rita Noversa de Sousa⁵, Maria Gabriella Raimondo⁶, Andreas Ramming⁷, Sara Bayat², Michael Sticherling⁸, Torsten Kuwert⁹, Christian Schmidkonz⁹, Georg Schett¹⁰ and Filippo Fagni¹¹, ¹- Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany, Erlangen, Germany, ²Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg and University Hospital Erlangen, Erlangen, Germany, ³Department of Nuclear Medicine, Friedrich-Alexander University (FAU) Erlangen-Nuremberg and Universitätsklinikum Erlangen, Erlangen, Germany, Erlangen, Germany, ⁴Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany, erlangen, ⁵Department of Internal Medicine ³, Friedrich-Alexander University (FAU) Erlangen-Nuremberg and Universitätsklinikum Erlangen, Erlangen, Germany, Erlangen, ⁶Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany, ⁷Department of Internal Medicine ³, Rheumatology & Immunology, Friedrich-Alexander-University (FAU) & Universitätsklinikum Erlangen, Erlangen, Germany, ⁸Department of Dermatology, Friedrich-Alexander University (FAU) Erlangen-Nuremberg and Universitätsklinikum Erlangen, Erlangen, Germany, Erlangen, Germany, ⁹Department of Nuclear Medicine, Friedrich-Alexander University (FAU) Erlangen-Nuremberg and Universitätsklinikum Erlangen, Erlangen, Germany, Erlangen, ¹⁰Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, Germany, ¹¹Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität Erlangen-Nürnberg and University Hospital Erlangen, Erlangen, Bayern, Germany
Background/Purpose: 68Ga-FAPI-04 PET/CT reveals fibroblast activation in vivo and is increasingly used to assess rheumatic diseases, including inflammatory arthritides. (1,2) We previously demonstrated that the…
Abstract Number: 0096 • ACR Convergence 2025
GLUT1-Dependent Targeting and Enhanced Selectivity of a Glucose-Methotrexate Conjugate in Rheumatoid Arthritis Fibroblast-Like Synoviocytes
Sebastian Makuch¹, Jacek Polański¹ and Wojciech Tański², ¹Wrocław Medical University, Wrocław, Poland, ²Wrocław University of Science and Technology, Wrocław, Poland
Background/Purpose: Rheumatoid arthritis (RA) is a chronic autoimmune disease where fibroblast-like synoviocytes (FLS) play a central role in joint inflammation and destruction. Methotrexate (MTX), a…
Abstract Number: 2285 • ACR Convergence 2025
Synovium-on-a-chip – Development of a Humanized Rheumatoid Arthritis Model that Mimics Disease and Patient Biological Heterogeneity
Theresa Wampler Muskardin¹, Ruiqi Chen², Yeji Lee³, Azka Ali³, Andrra Nimoni³, Christele Felix³, Hattie Heiland³, Romy Kallas³, Daniel Ramirez⁴, David Mayman³, Timothy Niewold⁵ and Weiqiang Chen⁶, ¹Hospital for Special Surgery and Weill Cornell Medicine, New York, NY, ²New York University - Tandon School of Engineering, New York, NY, ³Hospital for Special Surgery, New York, NY, ⁴Hospital for Special Surgery, Weill Cornell Medicine, New York, NY, ⁵Hospital for Special Surgery, New York, New York, ⁶New York University, Tandon School of Engineering, New York, NY
Background/Purpose: In rheumatoid arthritis (RA), reasons for treatment resistance and alternate strategies that would be more effective in treatment-resistant patients remain unknown. Accurate methodology to…
Abstract Number: 0097 • ACR Convergence 2025
Aberrant histone marks increase the inflammatory phenotype of rheumatoid arthritis fibroblast-like synoviocytes (RA FLS) by suppressing NUB1 induction
Yosuke Ono¹, Camilla R.L. Machado², Eunice Choi¹, Wei Wang¹, David Boyle¹ and Gary Firestein², ¹University of California, San Diego, San Diego, ²University of California, San Diego, San Diego, CA
Background/Purpose: Fibroblast-like synoviocytes (FLS) play a central role in cartilage destruction and cytokine production in rheumatoid arthritis (RA). Neddylation, a post-translational modification involving NEDD8 conjugation,…
Abstract Number: 1801 • ACR Convergence 2025
Matrikine Activation of Synovial Fibroblasts Promotes Monocyte Migration and Stimulates an OA Chondrocyte Phenotype
Richard Loeser¹, Jorge Fernandez Davila¹, Philip Coryell², Susan Chubinskaya³ and Doug Phanstiel⁴, ¹University of North Carolina, Chapel Hill, NC, ²University of North Carolina-Chapel Hill, Chapel Hill, NC, ³University of Texas Medical Branch, Galveston, TX, ⁴University of North Carolina at Chapel Hill, Chapel Hill, NC
Background/Purpose: Protease cleavage of matrix proteins generates matrix fragments including fibronectin fragments (FN-f) found in OA cartilage and synovial fluid. Matrix fragments or “matrikines” activate…
Abstract Number: 0081 • ACR Convergence 2025
Trans-endothelial Trafficking of Fibroblast-like Synoviocytes Amplifies Synovial Inflammation in Rheumatoid Arthritis
Jaeyeon Kim¹, Sanaz Panahandeh², Hieu Nguyen³, Kainat Mian⁴, Hadijat Makinde⁴, Kyoung Jae Won⁵, Arminja Kettenbach³, Harris R Perlman⁴, Costantino Pitzalis⁶ and Nunzio Bottini⁷, ¹Cedars Sinai Medical Center, Los Angeles, CA, ²Cedars-Sinai Medical Center, Los Angeles, ³Geisel School of Medicine at Dartmouth, Lebanon, NH, ⁴Northwestern University, Chicago, IL, ⁵Cedars-Sinai Medical Center, Los Angeles, CA, ⁶QMUL, Bromley Kent, United Kingdom, ⁷Cedars Sinai Medical Center, Beverly Hills, CA
Background/Purpose: The discovery of circulating fibroblast-like synoviocyte (FLS), known as PRIME cells, in RA patients suggests that synovial FLS may enter the circulation through blood…
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: 0075 • ACR Convergence 2025
Impact of CXCL2 and IL-11 from Rheumatoid Arthritis Synovial Fibroblasts on Angiogenesis and Endothelial Cell Network Formation
Elena Neumann¹, Frederik Loetfering², Paula Welbrink³, Corinna Heck³, Daria Kuersammer³, Klaus Frommer¹, Stefan Rehart⁴ and Ulf Müller-Ladner¹, ¹Dept. of Rheumatology and Clinical Immunology, Campus Kerckhoff, Bad Nauheim, Justus-Liebig-University, Germany, Bad Nauheim, Hessen, Germany, ²Justus Liebig University Giessen, Campus Kerckhoff, Bad Nauheim, ³Justus-Liebig-Universität Gießen, Campus Kerckhoff, Bad Nauheim, Germany, ⁴Agaplesion Markus Hospital, Frankfurt, Hessen, Germany
Background/Purpose: In rheumatoid arthritis (RA), hypervascularization contributes to synovial inflammation. RA synovial fibroblasts (RASF) contribute to cartilage and bone erosion but also promote angiogenesis. Activated…
Abstract Number: 1780 • ACR Convergence 2025
Modeling Osteoarthritis Knee Joint in a Compartmentalized Microfluidic System using IPSC-derived Sensory Neurons and human Synovial Fibroblasts
Abdelhak Belmadani¹, Dongjun Ren¹, Daniel Hoffman², Nirupa Jayraj¹, Paola Pacifico¹, Vince Truong³, Patrick Walsh³, Daniela Menichella¹, Anna Rapp⁴, Carla Scanzello⁵, Rachel Miller⁶, Richard Miller⁷ and Anne-Marie Malfait⁸, ¹Northwestern University Chicago, Chicago, IL, ²Rush University, Chicago, IL, ³Anatomic Inc, Minneapolis, MN, ⁴University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, ⁵University of Pennsylvania, Philadelphia, ⁶Rush University Medical Center, Chicago, IL, ⁷Northwestern University, Chicago, ⁸Rush University Medical Center, Chicago
Background/Purpose: Joint pain is one of the most significant clinical hallmarks of knee osteoarthritis (OA). Knee OA is a chronic degenerative disease of the joints…
Abstract Number: 0069 • ACR Convergence 2025
Spatial transcriptomics in rheumatoid arthritis (RA) synovium reveals distinct region-specific fibroblast functions
Camilla R.L. Machado¹, Mina Yao¹, David Boyle², Robert J. Benschop³, James T. Parker³, Wei Wang² and Gary Firestein¹, ¹University of California, San Diego, San Diego, CA, ²University of California, San Diego, San Diego, ³Eli Lilly, San Diego
Background/Purpose: RA synovium displays cellular heterogeneity, with gene expression driving disease pathogenesis. Unbiased cell-specific transcriptomes in RA synovium have previously relied primarily on disaggregated tissues…
Abstract Number: 1757 • ACR Convergence 2025
Skin-to-Joint Immune Cell Migration and Synovial Reprogramming in Psoriatic Arthritis Onset
Maria Gabriella Raimondo¹, Hashem Mohammadian², Mario Angeli², Vladyslav Fedorchenko², Kaiyue Huang³, Yi-Nan Li⁴, Raphael Micheroli⁵, Jörg Distler⁶, Ursula Fearon⁷, Juergen Rech², Francesco Ciccia⁸, Juan Cañete⁹, Adam Croft¹⁰, Mariola Kurowska-Stolarska¹¹, Stefano Alivernini¹², Maria Antonietta D'Agostino¹³, Georg Schett², Simon Rauber¹⁴ and Andreas Ramming¹⁵, ¹Department of Medicine ³ - Rheumatology and Immunology, Friedrich-Alexander-Universität (FAU) Erlangen-Nürnberg and Uniklinikum Erlangen, Erlangen, Germany, ²Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, Germany, ³Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, ⁴University Hospital of Düsseldorf, Düsseldorf, Germany, ⁵University Hospital Zurich, Zurich, Switzerland, ⁶University Hospital Duesseldorf and HHU, Duesseldorf, Germany, ⁷Trinity College Dublin, Dublin, Dublin, Ireland, ⁸Rheumatology Section, University of Campania L. Vanvitelli, Naples, Italy, Naples, Italy, ⁹Rheumatology Department, Hospital Clínic and IDIBAPS, Barcelona, Spain, Barcelona, Spain, ¹⁰University of Birmingham, Hagley, Stourbridge, United Kingdom, ¹¹University of Glasgow, Glasgow, ¹²Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy, ¹³Division of Rheumatology and Clinical Immunology - Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy, ¹⁴Uniklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany, Erlangen, Bayern, Germany, ¹⁵Department of Internal Medicine ³, Rheumatology & Immunology, Friedrich-Alexander-University (FAU) & Universitätsklinikum Erlangen, Erlangen, Germany
Background/Purpose: Psoriatic arthritis (PsA) develops in about 30% of individuals with psoriasis (PsO), highlighting a critical connection between skin and joint inflammation. However, the mechanisms…

1
2
3
…
10
Next Page »

All abstracts accepted to ACR Convergence are under media embargo once the ACR has notified presenters of their abstract’s acceptance. They may be presented at other meetings or published as manuscripts after this time but should not be discussed in non-scholarly venues or outlets. The following embargo policies are strictly enforced by the ACR.

Accepted abstracts are made available to the public online in advance of the meeting and are published in a special online supplement of our scientific journal, Arthritis & Rheumatology. Information contained in those abstracts may not be released until the abstracts appear online. In an exception to the media embargo, academic institutions, private organizations, and companies with products whose value may be influenced by information contained in an abstract may issue a press release to coincide with the availability of an ACR abstract on the ACR website. However, the ACR continues to require that information that goes beyond that contained in the abstract (e.g., discussion of the abstract done as part of editorial news coverage) is under media embargo until 10:00 AM CT on October 25. Journalists with access to embargoed information cannot release articles or editorial news coverage before this time. Editorial news coverage is considered original articles/videos developed by employed journalists to report facts, commentary, and subject matter expert quotes in a narrative form using a variety of sources (e.g., research, announcements, press releases, events, etc.).

Violation of this policy may result in the abstract being withdrawn from the meeting and other measures deemed appropriate. Authors are responsible for notifying colleagues, institutions, communications firms, and all other stakeholders related to the development or promotion of the abstract about this policy. If you have questions about the ACR abstract embargo policy, please contact ACR abstracts staff at [email protected].