Abstracts tagged "T-Regulatory Cells"

Abstract Number: 1825 • 2018 ACR/ARHP Annual Meeting
Rheumatoid Arthritis Associated Haploinsufficiency in PTPN2 Enhances Severity of IL-17 Mediated Autoimmune Arthritis
Mattias N. D. Svensson¹, Karen M. Doody², Shen Yang³, Dennis J. Wu⁴, Cristiano Sacchetti⁵, Isabelle Aubry⁶, Piotr Mydel⁷, Mitchell Kronenberg⁸, Michel L. Tremblay⁹ and Nunzio Bottini², ¹Department of Medicine, University of California San Diego, La Jolla, CA, ²Cellular Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, ³Medicine, University of California San Diego, La Jolla, CA, ⁴University of California San Diego, San Diego, CA, ⁵Rheumatology, University of California San Diego, La Jolla, CA, ⁶Biochemistry, McGill University, Montreal, QC, Canada, ⁷University of Bergen, Bergen, Norway, ⁸Developmental Immunology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, ⁹Biochemistry, McGill University, Montréal, QC, Canada
Background/Purpose: Genetic polymorphisms at the PTPN2 locus, which encodes the tyrosine phosphatase TC-PTP, cause reduced gene expression and are linked to rheumatoid arthritis (RA). PTPN2…
Abstract Number: 2052 • 2018 ACR/ARHP Annual Meeting
Immune Therapy of Rheumatoid Arthritis Patients with a Microbiome-Derived, Self/Non-Self Peptide Induces Clinically Relevant Immune Tolerance Pivoting on Immune Checkpoint-Expressing, Therapy-Induced Tregs
Salvatore Albani¹, Jing Yao Leong² and Theodorus van den Broek³, ¹Translational Immunology Institute, Singhealth/Duke-NUS Acedemic Medical Centre, Singapore, Singapore, ²Translational Immunology Institute, Singhealth/Duke-NUS Academic Medical Centre, Singapore, Singapore, ³University Medical Center of Utrecht, Utrecht, Netherlands
Background/Purpose: We have previously reported in patients with RA abnormal inflammatory T cell responses to an E. coli peptide (dnaJP1) which shares homology with the…
Abstract Number: 2058 • 2018 ACR/ARHP Annual Meeting
Effects of Fatty Acid Supplementation in Modulation of Gut Microbiome and T-Regulatory Cells in Health and Psoriatic Disease
Fardina Malik¹, Julia Manasson¹, Alberto Herrera², Malavika Attur³, Soumya M. Reddy³, Lu Yang⁴, Sergei Koralov⁵ and Jose U. Scher¹, ¹New York University School of Medicine, New York, NY, ²New York University School of Medicine, NEW YORK, NY, ³Department of Medicine, Division of Rheumatology, New York University School of Medicine, New York, NY, ⁴New York University School of Medicine, New York, NY, ⁵Pathology, New York University School of Medicine, New York, NY
Background/Purpose: Psoriatic Arthritis (PsA) affects up to 30% patients with psoriasis and is characterized by widespread synovio-entheseal inflammation. Physiologically, the human gut microbiota metabolizes dietary…
Abstract Number: 2538 • 2018 ACR/ARHP Annual Meeting
Rapamycin Induces Remission in Patients with Newly Diagnosed Rheumatoid Arthritis
Min Chen¹, Xiao-Feng Li², Chong Gao³ and Cai-Hong Wang⁴, ¹The Second Hospital of Shanxi Medical Univerity, Taiyuan City, China, ²Rheumatology, the Second Hospital of Shanxi Medical University, Taiyuan, China, ³Department of Pathology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, Cambridge, MA, ⁴The Second Hospital of Shanxi Medical Univerity, Taiyuan, China
Background/Purpose: Rheumatoid arthritis (RA) is an autoimmune disease characterized by chronic inflammation of the joints.We found that there was an imbalance between Th17 and Treg…
Abstract Number: 2824 • 2018 ACR/ARHP Annual Meeting
On Tapering Therapy for RA Patients in Clinical Remission; Flare on Csdmards Predicted By Clinical Features and Musculoskeletal Ultrasound, Whereas T-Cell Abnormalities Predictive for b-DMARD Tapering
Hanna Gul¹, Frederique Ponchel² and Paul Emery³, ¹Rheumatology, Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds & Leeds NIHR Biomedical Research Centre, Leeds, United Kingdom, ²Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, Leeds, United Kingdom, ³University of Leeds and NIHR Leeds Biomedical Research Centre, Leeds, United Kingdom
Background/Purpose: Tapering of disease-modifying therapy (DMARDs) is recommended by EULAR/ACR for rheumatoid arthritis (RA) patients who achieve sustained remission on stable therapy. However, there is…
Abstract Number: 399 • 2017 ACR/ARHP Annual Meeting
Therapeutic Effect of Rosiglitazone-Mediated Dendritic Cells in Established Arthritis in Mice
Jin Jung Choi¹, Sang-Yoon Jung², Kyung-Su Park³, Chong-Hyeon Yoon⁴ and Dae-Seog Lim⁵, ¹Rheumatology, CHA University Medical Center at Bundang, Sungnam, Korea, Republic of (South), ²Internal Medicine, Bundang CHA Medical Center, Seongnam, Korea, Republic of (South), ³Internal Medicine, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea, Republic of (South), ⁴Rheumatology, The Catholic University of Korea, Uijeongbu St. Mary's Hospital, Uijeongbu, Korea, Republic of (South), ⁵Department of biotechnology, CHA University, Sungnam, Korea, Republic of (South)
Background/Purpose: Rosiglitazone is a selective ligand for peroxisome proliferator-activated receptor-gamma (PPAR-γ), which is expressed by antigen presenting cells (APCs) and plays a fundamental role in…
Abstract Number: 1737 • 2017 ACR/ARHP Annual Meeting
An Abundance of Butyrate-Producing Bacterium in the Intestine and Increased Foxp3 Gene Expression of T Cells in Patients with Relapsing Polychondritis
Jun Shimizu¹, Takao Kubota² and Noboru Suzuki³, ¹Department of Immunology and Medicine, St. Marianna University School of Medicine, Kawasaki, Japan, ²The Japan Self Defense Forces Central Hospital, Tokyo, Japan, ³Department of Immunology and medicine, St. Marianna University School of Medicine, Kawasaki-shi, 216-8511, Japan
Background/Purpose: Helper T cell subsets including Th17 cells and regulatory T (Treg) cells play a role in the adaptive immune response. RORC and Foxp3 are…
Abstract Number: 1740 • 2017 ACR/ARHP Annual Meeting
Fc-Derived Immunodominant Peptides Stimulate Natural Regulatory T Cells: A New Avenue to Overcome Defects in the Fc Antigen Processing and Restore Immune Regulation in Rheumatic Diseases
Alessandra Franco, Pediatrics, University of California San Diego School of Medicine, La Jolla, CA
Background/Purpose: The mechanisms of action of intravenous purified immunoglobulins (IVIG) in acute Kawasaki disease (KD) have been investigated in our laboratory and have led to…
Abstract Number: 1911 • 2017 ACR/ARHP Annual Meeting
Impaired Control of Autoreactive T Cell Expansion Is Coupled with Type-1 Regulatory T Cell Deficiency in BALB/c ZAP70W163C Mutant Mice
M. Arifur Rahman¹, Daphne Montizaan², Zaied Ahmed Bhuyan³, Linda Rehaume³ and Ranjeny Thomas⁴, ¹The University of Queensland Diamantina Institute, The University of Queensland, Brisbane, Australia, ²The University of Groningen, Groningen, Netherlands, ³The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, Australia, ⁴Dendright Pty Ltd, Brisbane, Australia
Background/Purpose: In the context of reduced TCR signaling in the BALB/c ZAP70W163C mutant (SKG) mouse, development of arthritis, psoriasis-like skin inflammation and ileitis after intra-peritoneal…
Abstract Number: 2422 • 2017 ACR/ARHP Annual Meeting
Rheumatoid Arthritis (RA) Synovial Fluid Treg Cells Secrete IL-17 and at the Same Time Are Potent Suppressors of Tresp Cell Proliferation, TNF-α and Interferon γ Production
Lorena Valdeolivas-De Opazo¹, Paula Fortea-Gordo¹, Marta Benito-Miguel^1,2, Alejandro Villalba¹, Gema Bonilla¹, Diana Peiteado¹, Alejandro Balsa¹, Pilar Aguado¹, Paloma Sanchez-Mateos³, Amaya Puig-Kröger⁴, Emilio Martín-Mola¹ and Maria Eugenia Miranda-Carus¹, ¹Rheumatology, Hospital La Paz-IdiPAZ, Madrid, Spain, ²Biochemistry, Centro de Ciencias de la Salud San Rafael. Universidad Antonio de Nebrija, Madrid, Spain, ³Immunology, Hospital Gregorio Marañon, Madrid, Spain, ⁴Immuno-oncology, Hospital Gregorio Marañon, Madrid, Spain
Background/Purpose: IL-17-expressing FoxP3 regulatory T cells have been described, and their suppressive capacity has been questioned. An inflammatory environment seems to favor IL-17 secretion by…
Abstract Number: 2698 • 2017 ACR/ARHP Annual Meeting
IL-21-mTOR Axis Blocks the Differentiation and Function of SLE Tregs Via Suppression of Autophagy
Hiroshi Kato¹ and Andras Perl², ¹Division of Rheumatology/Internal Medicine, SUNY Upstate Medical University, Syracuse, NY, ²Dept of Medicine, SUNY Upstate Medical University, Syracuse, NY
Background/Purpose: Mechanistic target of rapamycin (mTOR) activation has emerged as a prominent mediator of pro-inflammatory T-cell expansion and regulatory T (Treg) cell depletion in systemic…
Abstract Number: 2700 • 2017 ACR/ARHP Annual Meeting
Fra-2 Overexpression Leads to Systemic Autoimmunity By Affecting IL2 Dependent Treg Homeostasis
Florian Renoux¹, Mara Stellato¹, Daniela Impellizzieri², Alexander Vogetseder³, Przemyslaw Blyszczuk¹, Riyun Huang⁴, Arun Subramaniam⁵, Clara Dees⁶, Jörg Distler⁷, Gabriela Kania¹, Onur Boyman² and Oliver Distler⁸, ¹Department of Rheumatology, University Hospital Zurich, Zurich, Switzerland, ²Division of Clinical Immunology, University Hospital Zurich, Zurich, Switzerland, ³Department of Pathology, Cantonal Hospital Lucerne, Lucerne, Switzerland, ⁴Immune Mediated Diseases, Sanofi-Genzyme, Framingham, MA, ⁵Sanofi-Genzyme, Framingham, MA, ⁶Department of Internal Medicine 3 and Institute for Clinical Immunology,, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Erlangen, Germany, ⁷Department of Internal Medicine 3 – Rheumatology and Immunology, Universitätsklinikum Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Erlangen, Germany, ⁸Department of Rheumatology, Center of Experimental Rheumatology, University Hospital Zurich, Zurich, Switzerland
Background/Purpose: Fos-related antigen 2 (Fra-2) is a transcription factor belonging to the Fos family proteins which is part of the AP-1 transcription factor complex. We…
Abstract Number: 2701 • 2017 ACR/ARHP Annual Meeting
TNFR2+ Regulatory T Cellssubpopulations ARE Highly Suppressive and Are Increased on Anti-TNF Treatment
Francois Santinon¹, Maxime Batignes², Benoit Salomon³, Patrice Decker², Marie-Christophe Boissier⁴, Luca Semerano⁵ and Natacha Bessis², ¹INSERM UMR 1125 University of Paris 13, Sorbonne Paris Cité, bobigny, France, ²INSERM UMR 1125 University of Paris 13, Sorbonne Paris Cité, Bobigny, France, ³Sorbonne Universités, UPMC Université Paris 06, INSERM, CNRS, Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris), Paris, France, ⁴Rheumatology Department, Assistance Publique – Hôpitaux de Paris (AP-HP), Avicenne Hospital, Bobigny, France, ⁵INSERM UMR 1125 University of Paris 13, Sorbonne Paris Cité and Assistance Publique – Hôpitaux de Paris (AP-HP), Avicenne Hospital, Rheumatology Department, France, Bobigny, France
Background/Purpose: In rheumatoid arthritis (RA), regulatory T cells (Tregs) are defective in their suppressive capacities and fail to control chronic inflammation. TNF-α is involved in…
Abstract Number: 2867 • 2017 ACR/ARHP Annual Meeting
CD39 Positive Regulatory T Cells As a Biomarker of Responsiveness to Methotrexate in Rheumatoid Arthritis
Vikas Gupta¹, Shobhita Katiyar², Ankita Singh², Ramnath Misra¹ and Amita Aggarwal¹, ¹Clinical Immunology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India, ²Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India
Background/Purpose: About 30-40% of patients with RA do not respond to MTX, the first-line therapy in RA. Early identification of responders may allow the use…
Abstract Number: 2978 • 2017 ACR/ARHP Annual Meeting
OX40/OX40L Axis Impairs Follicular and Natural Regulatory T Cell Function in Human Systemic Lupus
Christophe Richez¹, Jean-Francois Augusto², Clement Jacquemin³, Estibaliz Lazaro⁴, Marie-Elise Truchetet¹, Noémie Gensous⁵, Isabelle Douchet⁵, Thierry Schaeverbeke⁶, Cécile Contin-Bordes⁷ and Patrick Blanco⁷, ¹Department of Rheumatology, Bordeaux University Hospital, Bordeaux, France, ²Department of Nephrology, Angers University Hospital, Angers, France, ³Université de Bordeaux, Bordeaux, France, ⁴Department of Internal Medecine and Clinical Immunology, Bordeaux University Hospital, Pessac, France, ⁵UMR CNRS 5164, Bordeaux, France, ⁶Department of Rheumatology, Bordeaux University Hospital, BORDEAUX, France, ⁷Immunology, Department of Immunology, Bordeaux University Hospital, Bordeaux, France
Background/Purpose: Regulatory T cells (Treg) are impaired in human Systemic Lupus Erythematosus (SLE) and contribute to T cell activation. However, the mechanisms responsible for the…

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