Abstracts tagged "Treg cells"

Abstract Number: 0581 • ACR Convergence 2022
Mutants Improving Stability Enhance the Potency of Treg-Selective IL-2 Mutein for the Treatment of Autoimmune Disorders
Yingying Hu¹, Hu Ge¹, Yuxi Yan¹, Yun Zhang², Xiaoxing Huang¹, Zhenna Gao², Yiming Kou², Mi Ye², Lei Zhou¹, Siyuan Shao¹, Bowei Yin¹, Zhenzhen Li¹, Yayuan Fu¹, Wenqing Yang¹, Zhuoxiao Cao¹ and Renhong Tang¹, ¹Simcere Pharmaceutical Group, Shanghai, China, ²Simcere Pharmaceutical Group, Nanjing, China
Background/Purpose: Low-dose IL-2 with enhanced sensitivity to Treg cells has been proved to be safe and efficacious in multiple autoimmune disorders (AIDs) including SLE, RA,…
Abstract Number: 0646 • ACR Convergence 2022
Modulation of Type I IFN Production and Regulatory T Cells by the PKGI/ROCK Signaling Pathway
Ruth Fernandez Ruiz¹, Ilona Nln², Jacqueline Paredes² and Timothy Niewold², ¹Hospital for Special Surgery/Weill Cornell Medicine, New York, NY, ²Hospital for Special Surgery, New York, NY
Background/Purpose: IFNα is a pathogenic factor in SLE. The PRKG1 rs7897633 variant has been previously identified as the top hit in European ancestry patients with…
Abstract Number: 0649 • ACR Convergence 2022
Phosphofructokinase P Fine-Tunes T Regulatory Cell Metabolism, Function and Stability in Systemic Autoimmunity
Marc Scherlinger¹, Wenliang Pan², Ryo Hisada¹, Milena Vukelic³, Masataka Umeda¹, Afroditi Boulougoura², Maria Tsokos¹ and George Tsokos², ¹BIDMC Harvard University, Boston, MA, ²Division of Rheumatology and Clinical Immunology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, ³Albert Einstein College of Medicine, New York, NY
Background/Purpose: Systemic lupus erythematosus (SLE) is characterized by a defective T regulatory (Treg) cell compartment which participate in immune dysregulation. Although the underlying mechanism are…
Abstract Number: 0666 • ACR Convergence 2022
HRES-1/Rab4 Controls the Overexpression of CD38 and Depletion of IL-2 in CD4+ T Cells; Potential Involvement in Proinflammatory Lineage Development in SLE
Seong Hee (Joy) Park¹, Akshay Patel² and Andras Perl³, ¹Upstate Medical University, Syracuse, NY, ²SUNY Upstate Medical University, Syracuse, NY, ³SUNY, Syracuse, NY
Background/Purpose: HRES-1/Rab4 (Rab4A) is a small GTPase that is overexpressed in SLE patient T cells1,2, mediates the enhanced recycling of CD3 and CD4 cell surface…
Abstract Number: 0989 • ACR Convergence 2022
Regulatory T Cell Defects in SLE and Therapy with a Novel IL-2 Mutein: Phase 1 Clinical Results with Efavaleukin Alfa
Nandita Sarkar¹, Xuguang Hu¹, Nadia Tchao¹, Richard Furie², Alan Kivitz³, Stanley B Cohen⁴ and Kevin Gorski⁵, ¹Amgen Inc., South San Francisco, CA, ²Northwell Health, Great Neck, NY, ³Department of Rheumatology, Altoona Center for Clinical Research, Duncansville, PA, ⁴Metroplex Clinical Research Center and University of Texas Southwestern Medical Center, Dallas, TX, ⁵Amgen, Inc., Thousand Oaks, CA
Background/Purpose: Regulatory T cells (Treg) are critical for maintaining self-tolerance and preventing autoimmunity, and IL-2 is essential for their development, survival and suppressive function. Defects…
Abstract Number: 1399 • ACR Convergence 2022
Inflammatory Arthritis Genetic Risk Factors to Predict Treatment Patterns in Rheumatoid Arthritis
Gregory McDermott¹, Jing Cui¹, Rachel Knevel², Kumar Dahal¹, Dana Weisenfeld¹, Priyam Das³, Elizabeth Karlson¹, Su-Chun Cheng⁴, Soumya Raychaudhuri¹, Tianxi Cai⁴ and Katherine Liao¹, ¹Brigham and Women's Hospital, Boston, MA, ²Leiden University Medical Center, Leiden, Netherlands, ³Harvard Medical School, Boston, MA, ⁴Harvard TH Chan School of Public Health, Boston, MA
Background/Purpose: In a prior study, we described an alternative method for subphenotyping RA patients by the sequence of biologic DMARDs (bDMARDs) they receive over time.…
Abstract Number: 1740 • ACR Convergence 2022
Chronic Inflammation in Patients with Rheumatoid Arthritis or Spondyloarthritis Alters Regulatory T Cells Identity
Tessnime Abaab¹, Lyna Mebrek¹, Marie-Christophe Boissier², Luca Semerano³, Jerome Biton¹ and Natacha Bessis¹, ¹INSERM UMR 1125, Sorbonne Paris Nord University, Bobigny, France, ²INSERM UMR 1125, Sorbonne Paris Nord University,Rheumatology Dpt, APHP, GHUPSSD, Avicenne Hosp, Bobigny, France, ³Hopital Avicenne - AP-HP, Sorbonne Paris Nord University, INSERM UMR1125, Bobigny Cedex, France
Background/Purpose: Rheumatoid arthritis (RA) and spondyloarthritis (SpA) are inflammatory autoimmune diseases associated with impaired regulatory T cell (Tregs) function. Tregs identity varies according to their…
Abstract Number: 0471 • ACR Convergence 2021
Therapeutic Efficacy of BT-104, an Oral LANCL2 Agonist, for the Treatment of Systemic Lupus Erythematosus
Andrew Leber, Raquel Hontecillas, Nuria Tubau-Juni, Sarah Fitch, Jyoti Chauhan and Josep Bassaganya-Riera, Landos Biopharma, Blacksburg, VA
Background/Purpose: Systemic lupus erythematosus is a complex disease in which the immune system is dysfunctional at multiple levels including impaired regulatory responses, altered self-antigen processing…
Abstract Number: 0547 • ACR Convergence 2021
Autologous Haematopoietic Stem Cell Transplantation for Systemic Sclerosis Results in Sustained Changes in Immunoregulatory T and NK Cells
Ross Penglase, Malini Visweswaran, John Zaunders, Laila Girgis, David Ma and John Moore, St Vincent's Hospital, Sydney, Australia
Background/Purpose: Autologous Haematopoietic Stem Cell Transplantation (AHSCT) is an effective treatment for severe systemic sclerosis (SSc). To date, mechanistic studies have indicated possible pro-regulatory and…
Abstract Number: 1254 • ACR Convergence 2021
The Role of Regulatory T Cells (CD4+CD25+FOXP3) in Methotrexate Unresponsiveness in a Cohort of Naive Rheumatoid Arthritis Patients
Anna Abou-Raya, Darwish ELHallous, Mohamed Ossama, Nahla Farahat, Mohamed Khaled and Suzan Abou-Raya, Faculty of Medicine, Alexandria University, Alexandria, Egypt
Background/Purpose: Rheumatoid Arthritis (RA) is a chronic immune-mediated heterogenous disease characterized by a defect in the compartment of regulatory CD4+Foxp3+ T cells (Treg) which are…
Abstract Number: 1438 • ACR Convergence 2021
Development of a Computationally Designed, Hyperstable Dual Inhibitor of the IL-2 and IL-15 Receptors: A Novel Therapeutic Candidate for Inflammatory Conditions
Renan Vergara¹, Alex Chen¹, Jerry Chen¹, Marianne Riley¹, Luis Blancas-Mejia¹, Christie Mortales¹, Tania Berrocal¹, Tanu Priya¹, Marsha Mason¹, Kevin Yu¹, Olga Sharapova¹, Jorgen Nelson¹, Alfredo Quijano-Rubio¹, Thomas Linsky¹, Ryan Swanson¹ and Daniel-Adriano Silva², ¹Neoleukin Therapeutics, Inc., Seattle, WA, ²Formerly of Neoleukin Therapeutics, Inc., Seattle, WA
Background/Purpose: T cell mediated pathology is central to many forms of autoimmunity, and cytokines perform critical inflammatory functions during this process. IL-2 and IL-15 are…
Abstract Number: 1512 • ACR Convergence 2021
Epigenetic and Transcriptional Programs of CD4+ T Cell Anergy
Philip Titcombe, Milagros Silva Morales and Daniel Mueller, University of Minnesota, Minneapolis, MN
Background/Purpose: T cell tolerance is essential for preventing autoimmune diseases and resolving inflammation. To maintain tolerance, CD4+ T cells recognizing self-antigens in the periphery can…
Abstract Number: 1734 • ACR Convergence 2021
Efavaleukin Alfa, a Novel IL-2 Mutein, Selectively Expands Regulatory T Cells in Patients with SLE: Interim Results of a Phase 1b Multiple Ascending Dose Study
Nadia Tchao¹, Hamid Amouzadeh², Nandita Sarkar¹, Vincent Chow², Xuguang Hu¹, Mark Kroenke², Hui Wang², Rong Zhang², Kevin Gorski¹, Richard Furie³, Alan Kivitz⁴ and Stanley Cohen⁵, ¹Amgen Inc., South San Francisco, CA, ²Amgen Inc., Thousand Oaks, CA, ³Zucker School of Medicine at Hofstra/Northwell, Great Neck, NY, ⁴Altoona Center for Clinical Research, Duncansville, PA, ⁵Metroplex Clinical Research Center, Dallas, TX
Background/Purpose: Diminished IL-2 as well as both quantitative and qualitative abnormalities in regulatory T cells (Treg) are associated with autoimmune diseases including SLE. Efavaleukin alfa…
Abstract Number: 1774 • ACR Convergence 2021
Blood-based Immune Profiling Combined with Machine Learning Discriminates Psoriatic Arthritis from Psoriasis Patients
Michelle Mulder¹, Xuehui He², Juul van den Reek², Paulo Urbano², Charlotte Kaffa², Xinhui Wang³, Bram van Cranenbroek², Esther van Rijssen², Frank van den Hoogen⁴, Irma Joosten², Wynand Alkema⁵, Elke de Jong², Ruben Smeets², Mark Wenink⁶ and Hans Koenen², ¹Sint Maartenskliniek, Nijmegen, Netherlands, ²Radboud University Medical Center, Nijmegen, Netherlands, ³University of Luxembourg, Belvaux, Luxembourg, ⁴Sint Maartenskliniek, Ubbergen, Netherlands, ⁵Hanze University of Applied Sciences, Groningen, Netherlands, ⁶Sint Maartenskliniek, Malden, Netherlands
Background/Purpose: Early detection of psoriatic arthritis (PsA) in psoriasis (Pso) patients is crucial for timely treatment and prevention of structural joint damage. We aimed to…
Abstract Number: 1413 • ACR Convergence 2020
An Imbalance Between Regulatory and Inflammatory T Cell Subsets Distinguishes Systemic Autoimmune Rheumatic Disease Patients from Asymptomatic ANA+ Individuals
Emma Vanlieshout¹, Rashi Gupta¹, Dennisse Bonilla², Michael Kim³, Sindhu Johnson², Earl D. Silverman⁴, Linda Hiraki⁵, Zareen Ahmad⁶, Zahi Touma⁷, Arthur Bookman² and Joan Wither², ¹Krembil Research Institute, Toronto, ON, Canada, ²University of Toronto Lupus Clinic, Centre for Prognosis Studies in Rheumatic Diseases, Toronto Western Hospital, University Health Network, Toronto, ON, Canada, ³Krembil Research Insitute, Toronto, ON, Canada, ⁴Division of Rheumatology, The Hospital for Sick Children, Translational Medicine, Research Institute, The Hospital for Sick Children, and Department of Paediatrics, University of Toronto., Toronto, ON, Canada, ⁵Division of Rheumatology, The Hospital for Sick Children, Child Health Evaluative Sciences, Research Institute, The Hospital for Sick Children, and Department of Paediatrics, University of Toronto., Toronto, ON, Canada, ⁶Mount Sinai Hospital, Toronto, ON, Canada, ⁷University of Toronto Lupus Clinic, Centre for Prognosis Studies in Rheumatic Diseases, Toronto Western Hospital, University Health Network; Krembil Research Institute, Toronto, ON, Canada
Background/Purpose: The anti-nuclear antibody (ANA)-associated systemic autoimmune rheumatic diseases (SARDs) are characterized by a prolonged preclinical phase in which ANAs are produced in the absence…

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