Abstracts tagged "autoantigens"

Abstract Number: 1591 • ACR Convergence 2025
Novel autoantibodies in patients with systemic sclerosis and gastrointestinal dysfunction provide insight into disease pathogenesis
Zsuzsanna McMahan¹, Claudia Pedroza², Katie Lee³, Bingrui Chen³, Ami Shah⁴, Jody Hooper⁵, Srinivas Puttapaka⁶, Livia Casciola-Rosen⁷ and Subhash Kulkarni⁸, ¹UT Health Houston, Houston, TX, ²UTHealth Houston Institute for Clinical Research & Learning Health Care, Texas, TX, ³UTHealth Houston, Houston, TX, ⁴Johns Hopkins Rheumatology, Baltimore, MD, ⁵Stanford University, Stanford, CA, ⁶BIDMC/Harvard, Boston, MA, ⁷Johns Hopkins University, Baltimore, MD, ⁸BIDMC, Boston, MA
Background/Purpose: Gastrointestinal (GI) dysfunction is common and often debilitating in systemic sclerosis (SSc). Though it affects most patients, mechanisms are poorly understood and biomarkers for…
Abstract Number: 1524 • ACR Convergence 2025
Hydroxychloroquine Reduces Autoantibody Levels in Persons at Risk for Systemic Lupus Erythematosus
David Karp¹, Prithvi Raj¹, Changsong Zhu¹, Dajiang Liu², Duanping Liao² and Nancy Olsen³, ¹UT Southwestern Medical Center, Dallas, TX, ²Penn State College of Medicine, Hershey, PA, ³Penn State University/Milton S Hershey, Hershey, PA
Background/Purpose: The Study of Antimalarials in Incomplete Lupus Erythematosus (SMILE, NCT03030118) was a double-blind, randomized, placebo-controlled study of hydroxychloroquine (HCQ) to prevent the development of…
Abstract Number: 1514 • ACR Convergence 2025
Serum Antigenome Profiling Reveals Diagnostic Models for Systemic Lupus Erythematosus
Yan Wang¹, Lulu Cao², Mengze Xu³, Jian Lu³, Jing He¹, Fanlei Hu⁴ and Zhanguo Li⁵, ¹Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing, China, Beijing, China (People's Republic), ²Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing, China, Beijing, ³State Key Laboratory of Protein and Plant Gene Research, Center for Bioinformatics, School of Life Sciences, Peking University, Beijing, China., Beijing, Beijing, China (People's Republic), ⁴Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing, China (People's Republic), ⁵Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing, China, Beijing, Beijing, China (People's Republic)
Background/Purpose: Systemic lupus erythematosus (SLE) exhibits profound clinical and pathogenic heterogeneity, complicating diagnosis and treatment. Identifying subtype-specific biomarkers might intrinsically link to organ involvement.Methods: Patients…
Abstract Number: 0997 • ACR Convergence 2025
Identification of Novel HLA Class II–Restricted Autoantigens in Scleroderma and Ulcerative Colitis Using TargetScan 
Olivia Pryor¹, Catalina Burbano², Nathaniel Bagge², Rutuja Kulkarni², Heather F. Jones², Livio Dukaj², Shoshana M.K. Bloom², Jackson Lirette², Rachel Lent², Prachi Dhanania², Nicole A. Ladd², Ryan Kritzer², Hana Husic², Shobitha Jillella², Candace R. Perullo², Jinyu Zhu², Teagan J. Parsons², Ira Jain², Rakshika Balasubramaniyam², Kenneth L. Jahan², Vivin Karthik², Alexander Cristofaro¹, Chandan K. Pavuluri², Jenna LaBelle², Laurie Barefoot², Shrikanta Chattopadhyay², Kim M. Cirelli², Mollie M. Jurewicz², Andrew P. Ferretti² and Cagan Gurer², ¹TScan Therapeutics, Waltham, ²TScan Therapeutics, Waltham, MA
Background/Purpose: Selective modulation of autoimmune responses through antigen-specific therapies represents a promising direction for improving treatment specificity and safety. Genetic associations with HLA class II…
Abstract Number: 0948 • ACR Convergence 2025
Presentation of Apoptotic Cell-Derived Autoantigens in Systemic Autoimmune Disease
Lance Peterson¹, Hannah KL De Cleene², Cheryl Lichti², David Bending³ and Kodi Ravichandran², ¹Rheumatology and Immunology, Pediatrics, Washington University School of Medicine, St. Louis, MO, ²Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, ³Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, England, United Kingdom
Background/Purpose: Systemic lupus erythematosus is a chronic, multisystem autoimmune disease characterized by the dysregulated clearance of dying cells, which results in the release of damage-associated…
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: 0923 • ACR Convergence 2025
Influenza Virus Infection Alters the MHC Class II Self-Immunopeptidome to Present Lupus-Associated Autoantigens
Julia Rood¹, Stephanie Suh Kyung Yoon², Mary Heard¹, Michael Hogan², Nicola Ternette³, Edward Behrens⁴ and Laurence Eisenlohr¹, ¹Children's Hospital of Philadelphia, Philadelphia, PA, ²University of Pennsylvania, Philadelphia, PA, ³University of Dundee, Dundee, Scotland, United Kingdom, ⁴CHOP, West Chester, PA
Background/Purpose: Viral infections and major histocompatibility complex class II (MHC II) are both implicated in the genesis of systemic lupus erythematosus (SLE), but a mechanistic…
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: 0033 • ACR Convergence 2024
Refined Autoantibody Profiles in RA Reveal That Primarily ACPAs Binding Non-glycine Citrulline Motifs Are Associated with Shared Epitope Alleles
Linda Mathsson-Alm¹, Helga Westerlind², Isabel Gehring³, Monika Hansson², Nasim Ghasemzadeh¹, Jessica Rojas-Restrepo³, Saedis Saevarsdottir⁴, Joseph Sexton⁵, Siri Lillegraven⁶, Espen Haavardsholm⁶, Merete Hetland⁷, Hilde Hammer⁸, Tore K. Kvien⁹, Bente Glintborg¹⁰, Leonid Padyukov², Johan Askling² and Caroline Grönwall², and the Danish Rheumatologic Biobank Study Group (the Biomarker Protocol), Swedish Rheumatology Quality Register Biobank Study Group (SRQb), ¹Thermo Fisher Scientific, Uppsala, Sweden, ²Karolinska Institutet, Stockholm, Sweden, ³Thermo Fisher Scientific, Freiburg, Germany, ⁴University of Iceland, Reykjavik, Iceland, ⁵Center for treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway, Oslo, Norway, ⁶Diakonhjemmet Hospital, Oslo, Norway, ⁷Rigshospitalet Glostrup and University of Copenhagen, Glostrup, Denmark, ⁸Diakonhjemmet Hospital, Oslo, Oslo, Norway, ⁹Center for treatment of Rheumatic and Musculoskeletal Diseases (REMEDY), Diakonhjemmet Hospital, Oslo, Norway and University of Oslo (UiO), Institute of Clinical Medicine, Oslo, Norway, Oslo, Norway, ¹⁰DANBIO, Rigshospitalet Glostrup and University of Copenhagen, Virum, Denmark
Background/Purpose: Carriage of HLA-DRB1 shared epitope (SE) alleles and a history of smoking, have been identified as the most prominent risk factors for development of…
Abstract Number: 0039 • ACR Convergence 2024
Blockade of Soluble and Cell Surface PAD Activity Prevents the Generation of Citrullinated Autoantigens Recognized by RA Patients’ Serum
Lacie Scaletta¹, Teneema Kuriakose¹, Sambit Nanda¹, Mia Collins², Erika Darrah³, Iain McInnes⁴, David Close⁵ and Gary Sims¹, ¹Immunology Biosciences, Research and Early Development, Respiratory and Immunology (R&I), BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, ²Translational Science and Experimental Medicine, Research and Early Development, Respiratory and Immunology (R&I), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden, ³Translational Science and Experimental Medicine, Research and Early Development, Respiratory and Immunology (R&I), BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, ⁴University of Glasgow, College of Medical Veterinary and Life Sciences, Glasgow, United Kingdom, ⁵Early Clinical Development, Research and Early Development, Respiratory and Immunology (R&I), BioPharmaceuticals R&D, AstraZeneca, Cambridge, United Kingdom
Background/Purpose: Anti-citrullinated protein autoantibodies (ACPA) promote inflammation and joint tissue injury and define a poor prognostic group of patients with rheumatoid arthritis (RA). Citrullinated autoantigens…
Abstract Number: 0320 • ACR Convergence 2024
Comparative Transcriptional Profiling Reveals Shared Pathway Activation Between Human Jo-1+ Anti-Synthetase Syndrome and Murine Histidyl-tRNA Synthetase-Induced Myositis
Iago Pinal-Fernandez¹, Daniel Reay², Timothy Oriss², katherine Pak³, Maria Casal-Dominguez⁴, jose milisenda⁵, Albert Selva-O’Callaghan⁶, Werner Stenzel⁷, Andrew Mammen¹ and Dana Ascherman⁸, ¹NIH, Bethesda, MD, ²University of Pittsburgh School of Medicine, Pittsburgh, PA, ³National Institutes of Health, Bethesda, MD, ⁴NIH, Bathesda, MD, ⁵Hospital Clinic de Barcelona, Barcelona, Spain, ⁶Systemic Autoimmune Disease Unit, Vall d’Hebron Institute of Research, Barcelona, Spain, ⁷Charite University, Berlin, Germany, ⁸Division of Rheumatology and Clinical Immunology, University of Pittsburgh Medical Center, Pittsburgh, PA
Background/Purpose: Previous work has shown unique gene expression profiles in muscle tissue corresponding to the anti-synthetase syndrome, with an emphasis on interferon gene signatures (Type…
Abstract Number: 0837 • ACR Convergence 2024
Bispecific Autoantigen-T Cell Engagers (BaiTE) to Selectively Target Autoreactive B Cells in Antiphospholipid Syndrome
Yuanxuan Xia¹, Jin Liu¹, Alexander Pearlman¹, Brian Mog¹, Elana Shaw¹, Kyle J. Kaeo¹, Colin Gliech¹, Brock Moritz¹, Tolulope Awosika¹, Sarah DiNapoli¹, Stephanie Glavaris¹, Jiaxin Ge¹, Tushar Nichakawade¹, Nikita Marcou¹, Suman Paul¹, Drew Pardoll¹, Chetan Bettegowda¹, Daniel Goldman², Michelle Petri², Antony Rosen¹, Kenneth W. Kinzler¹, Shibin Zhou¹, Bert Vogelstein¹ and Maximilian F. Konig¹, ¹The Johns Hopkins University School of Medicine, Baltimore, MD, ²Johns Hopkins University School of Medicine, Timonium, MD
Background/Purpose: Available drugs to treat autoimmune diseases are indiscriminate, suppressing self-reactive and protective immune responses alike. This lack of therapeutic precision results in infection and…
Abstract Number: 0892 • ACR Convergence 2024
Peptides from Candidate Sjögren’s Disease Autoantigens and Salivary Gland Tissue-Enriched Proteins Eluted from Human Salivary Gland HLA-DR
Tommi C. Taylor¹, Sri Ramarathinam², Shan Zou Chung², Kirti Pandey², Ananth Aditya Jupudi¹, Bhuwan Khatri³, Sherri Longobardi³, Charmaine Lopez-Davis³, Astrid Rasmussen³, Kiely Grundahl³, Robert Hal Scofield³, Christopher Lessard³, Linda F. Thompson³, Anthony W. Purcell² and A. Darise Farris³, ¹University of Oklahoma Health Sciences Center, Oklahoma City, OK, ²Monash University, Clayton, Victoria, Australia, ³Oklahoma Medical Research Foundation, Oklahoma City, OK
Background/Purpose: Sjögren’s Disease (SjD) is characterized by aberrant autoimmune reactions in lacrimal and salivary glands (SG) leading to severe dryness. Evidence for B cell help…
Abstract Number: 0923 • ACR Convergence 2024
Immunization of Arthritis Prone Mice with Malondialdehyde-Acetaldehyde Modified Vimentin Induces Post-Translational Protein Modifications and Extracellular Matrix Deposition in Heart Tissues
Kimberley Sinanan¹, Wenxian Zhou², Michael Duryee¹, Nozima Aripova¹, Jill Poole¹, Carlos Hunter¹, Amy Nelson¹, Tate Johnson¹, Daniel Anderson³, Ted Mikuls¹ and Geoffrey Thiele¹, ¹University of Nebraska Medical Center, Omaha, NE, ²University of Nebraska Medical Center, Bellevue, NE, ³University of Nebraska Medical Center, Durham, NC
Background/Purpose: Recent studies have highlighted the importance of malondialdehyde-acetaldehyde (MAA)-modified proteins and resulting immune responses in the pathogenesis of rheumatoid arthritis (RA). MAA adducts have…
Abstract Number: 0963 • ACR Convergence 2024
Stratification According to Autoantibody Status in Systemic Sclerosis Reveals Distinct Molecular Signatures
Bénédicte ROUVIERE¹, Christelle Le dantec², Eléonore Bettacchioli³, Lorenzo Beretta⁴, Céline Cao², Christophe Jamin², Jacques-Olivier Pers⁵, Nathan Foulquier², Martin Kerick⁶, Javier Martin⁶, Marta Alarcon-Riquelme⁷, Claire de Moreuil⁸, Divi Cornec³ and Sophie Hillion², and PRECISESADS Clinical Consortium, PRECISESADS Metabolomic Study Group, ¹CHRU de Brest, LBAI. UMR 1227, University of Brest, Brest, France, ²LBAI. UMR 1227, University of Brest, Brest, France, ³Service de Rhumatologie, CHU de Brest, Brest, France, ⁴Scleroderma Unit, Fondazione IRCCS Ca' Granda, University of Milan, Milan, Italy, ⁵University of Brest, Brest, France, ⁶Instituto de Parasitología y Biomedicina 'López-Neyra', CSIC, PTS Granada, Spain, Granada, Spain, ⁷Fundación Progreso y Salud, Andalusian Government, Granada, Spain, ⁸Service de médecine interne, CHU de Brest, Brest, France
Background/Purpose: Systemic sclerosis is a heterogeneous disease, complicating its management. Its complexity and the insufficiency of clinical manifestations alone to delineate homogeneous patient groups further…

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