Abstracts tagged "T cells"

Abstract Number: 674 • 2016 ACR/ARHP Annual Meeting
Targeting Glandular IL-21-Production in Primary Sjogren′s Syndrome Patients By Immunomodulatory Treatment
Gwenny M. Verstappen¹, Hendrik L.F. Broekman¹, Erlin A. Haacke², Petra M. Meiners³, Fred K.L. Spijkervet³, Arjan Vissink⁴, Hendrika Bootsma⁵ and Frans G.M. Kroese¹, ¹Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands, ²Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands, ³Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, Netherlands, ⁴Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, Netherlands, ⁵Rheumatology and Clinical Immunology, University of Groningen, University Medical Center Groningen, The Netherlands, Groningen, Netherlands
Background/Purpose: Interleukin-21 plays a central role in plasma cell differentiation and germinal center (GC) formation and is likely involved in the pathogenesis of primary Sjögren’s…
Abstract Number: 1908 • 2016 ACR/ARHP Annual Meeting
Identification of a Novel Pro-Inflammatory T Cell Epitope from His-tRNA-Synthetase Associated with Interstitial Lung Disease in Anti-Jo-1 Positive Patients
Angeles Shunashy Galindo-Feria¹, Inka Albrecht², Antonella Notarnicola², Maryam Dastmalchi², Anatoly Dubnovitsky³, Tatiana Sandalova³, Genadiy Kozhukh³, Lars Rönnblom⁴, Adnane Achour⁵, Vivianne Malmström⁶ and Ingrid E. Lundberg², ¹Department of Medicine., Rheumatology Unit, Karolinska University Hospital, Karolinska Institutet, Stockholm, Sweden, ²Department of Medicine, Rheumatology Unit, Karolinska University Hospital, Karolinska Institutet, Stockholm, Sweden, ³Department of Medicine Solna and Department of Infectious Diseases,, Science for Life Laboratory, Karolinska Institutet and Karolinska University Hospital, Solna, Sweden, ⁴Uppsala University, Department of Medical Sciences, Rheumatology and Science for Life Laboratory, Uppsala, Sweden, ⁵Science for Life Laboratory, Department of Medicine Solna, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden, ⁶Department of Medicine, Rheumatology Unit, Department of Medicine, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden
Background/Purpose: Previous studies have demonstrated that CD4+ T cells from peripheral blood of anti-histidyl-tRNA synthetase (anti-His-tRNA) also known as anti-Jo-1 positive patients proliferate in response…
Abstract Number: 2008 • 2016 ACR/ARHP Annual Meeting
Rapamycin Elicits Rapid and Lasting Improvement of Disease Activity through Blocking Pro-Inflammatory T Cell Lineage Specification in Patients with Active SLE
Zhi-Wei Lai¹, Ivan Marchena², Hajra Tily², Ricardo Garcia¹, Julie Yu², Lisa Francis², Maha Dawood², Ryan Kelly², Stephen Faraone², Paul E. Phillips³ and Andras Perl⁴, ¹Medicine, SUNY, Syracuse, NY, ²SUNY, Syracuse, NY, ³Dept of Medicine/Div of Rheum, SUNY-Upstate Medical Univ, Syracuse, NY, ⁴Department of Medicine, Upstate Medical University, Syracuse, NY
Background/Purpose: The rationale for this prospective, biomarker-driven, open-label clinical trial of rapamycin (ClinicalTrials.gov Identifier: NCT00779194) has been based on growing evidence for involvement of the…
Abstract Number: 2926 • 2016 ACR/ARHP Annual Meeting
Rorc Positive Th17, Th17/Th1, and Th17.1 Cells from the Blood of Treatment NaïVe RA Patients Differ in IL-17A but Are All Pathogenic When Co-Cultured with RA Synovial Fibroblasts
Sandra M.J. Paulissen¹, Jan Piet van Hamburg², Nadine Davelaar², Wendy Dankers³, Patrick Asmawidjaja², Anne-Marie Otten-Mus² and Erik Lubberts², ¹Room Nb-84, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands, ²Rheumatology and Immunology, Erasmus MC, University Medical Center, Rotterdam, Netherlands, ³Rheumatology, Erasmus MC, University Medical Center, Rotterdam, Netherlands
Background/Purpose: T cells play a central role in the early stages of rheumatoid arthritis (RA). In this context, we have shown increased proportions of memory…
Abstract Number: 918 • 2016 ACR/ARHP Annual Meeting
Anergic B Cells May Preserve Peripheral Tolerance in Lupus-Prone Congenic Mice
Kieran Manion^1,2, Yuriy Baglaenko^1,2, Nan-Hua Chang², Nafiseh Talaei³ and Joan Wither⁴, ¹Immunology, University of Toronto, Toronto, ON, Canada, ²Genetics and Development, Krembil Research Institute, University Health Network, Toronto, ON, Canada, ³Genetics and Development, Krembil Research Institute, Toronto, ON, Canada, ⁴Krembil Research Institute, University Health Network, Toronto, ON, Canada
Background/Purpose: Anergic autoreactive B cells are thought to play a critical role in systemic lupus erythematosus (SLE), a chronic autoimmune disease where breach of tolerance…
Abstract Number: 1909 • 2016 ACR/ARHP Annual Meeting
The Transcription Factor Fra2 Is Playing a Key Role in Treg Development and Autoimmunity
Florian Renoux¹, Mara Stellato², Daniela Impellizzieri³, Riyun Huang⁴, Arun Subramaniam⁵, Clara Dees⁶, Jeorg HW Distler⁶, Gabriela Kania², Onur Boyman³ and Oliver Distler², ¹Depertment of Rheumatology, University Hospital Zurich, Schlieren, Switzerland, ²Department of Rheumatology, University Hospital Zurich, Zurich, Switzerland, ³Division of Clinical Immunology, University Hospital Zurich, Zurich, Switzerland, ⁴Immune Mediated Diseases, Sanofi-Genzyme, Framingham, MA, ⁵Sanofi-Genzyme, Framingham, MA, ⁶Department of Internal Medicine 3, University of Erlangen-Nuremberg, Erlangen, Germany
Background/Purpose: Decreased numbers or altered functions of regulatory T cells (Tregs) have been reported in many inflammatory rheumatic diseases, and Tregs are considered promising…
Abstract Number: 2058 • 2016 ACR/ARHP Annual Meeting
Ectonucleotidase-Mediated Protection of Lupus Mice from Exaggerated Immune Responses and Arterial Vasculopathy
Jason S Knight¹, Levi F Mazza¹, Srilakshmi Yalavarthi¹, Yogen Kanthi² and David J Pinsky², ¹Division of Rheumatology, University of Michigan, Ann Arbor, MI, ²Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, MI
Background/Purpose: CD39 and CD73 are so-called ectonucleotidases, surface enzymes expressed by leukocytes and endothelial cells that jut into the extracellular space. There, they mediate the…
Abstract Number: 2928 • 2016 ACR/ARHP Annual Meeting
Hypomethylation of an Intragenic Alternative Promoter Contributes to Impaired Treg Function in Rheumatoid Arthritis By Transcriptional Interference with Expression of the Treg-Specific Protein, Glycoprotein a Repetitions Predominant (GARP)
Alla Skapenko, Jan Leipe and Hendrik Schulze-Koops, Division of Rheumatology and Clinical Immunology, University of Munich, Munich, Germany
Background/Purpose: The expression of Treg specific genes, such as the master transcription factor of Tregs, FoxP3 or the Treg specific surface molecule, glycoprotein A repetitions…
Abstract Number: 922 • 2016 ACR/ARHP Annual Meeting
Negative Regulation of IL-17 Receptor Signaling By Regnase-1 Limits Immunopathology in a Mouse Model of Psoriatic Skin Disease
Sarah L. Gaffen¹, Leticia Monin², Nicole Ward³, Johann Gudjonsson⁴, Abhishek Garg⁵, Alicia Mathers² and Pappachan Kolattukudy⁶, ¹Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, ²University of Pittsburgh, Pittsburgh, PA, ³Case Western Reserve University, Cleveland, OH, ⁴Dermatology, University of Michigan, Ann Arbor, MI, ⁵Rheumatology/Clinical Immun, University of Pittsburgh, Pittsburgh, PA, ⁶University of Central Florida, Orlando, FL
Background/Purpose: IL-17 cytokines have emerged as drivers of autoimmunity. Indeed, the IL-17A-targeting antibody secukinumab (Cosentyx) was recently approved for treatment of plaque psoriasis, and shows…
Abstract Number: 1911 • 2016 ACR/ARHP Annual Meeting
Potent and Selective Tyk2 Inhibitor Highly Efficacious in Rodent Models of Inflammatory Bowel Disease and Psoriasis
Wenyan Miao¹, Craig Masse¹, Jeremy Greenwood², Rosana Kapeller¹ and William Westlin¹, ¹Nimbus Therapeutics, Cambridge, MA, ²Schrodinger Inc., New York, NY
Background/Purpose: Tyk2 is a member of the JAK family kinases and is a key mediator of IL-12, IL-23, and type I interferon signaling. These cytokines…
Abstract Number: 2059 • 2016 ACR/ARHP Annual Meeting
Serine/Arginine-Rich Splicing Factor 1 (SRSF1) Is a Novel Factor in T Cell Homeostasis and Its Selective Loss in T Cells Causes Autoimmunity and Lupus-like Nephritis
Vaishali R. Moulton¹, Hao Li², Michael W. Mosho², Andrew R. Gillooly², Meghan L. Keane³ and George C. Tsokos⁴, ¹Division of Rheumatology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, ²Medicine/ Rheumatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, ³Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, ⁴Division of Rheumatology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
Background/Purpose: T cells from patients with systemic lupus erythematosus (SLE) express reduced amounts of the critical CD3 zeta signaling chain, and produce low levels of…
Abstract Number: 2931 • 2016 ACR/ARHP Annual Meeting
Endogenous Nur77 Is a Specific Indicator of Antigen Receptor Signaling in Human T and B Cells
Judith Ashouri and Arthur Weiss, Department of Medicine, Division of Rheumatology, 1Howard Hughes Medical Institute, Rosalind Russell and Ephraim P. Engleman Rheumatology Research Center, University of California, San Francisco, San Francisco, CA
D Intracellular Nur77 protein amounts were assessed by immunofluorescence and flow cytometry in T and B cells isolated from human PBMCs stimulated through their Ag…
Abstract Number: 1029 • 2016 ACR/ARHP Annual Meeting
Functional Genetics of PTPN2 in Rheumatoid Arthritis: Haploinsufficiency of PTPN2 Promotes Severity of Th17-Cell Mediated Autoimmune Arthritis
Mattias N. D. Svensson^1,2, Karen M. Doody¹, Cristiano Sacchetti^1,2, Dennis J. Wu¹, Gisen Kim³, Annelie Hellvard⁴, Brith Bergum⁴, Piotr Mydel⁴, Mitchell Kronenberg³, Michel L. Tremblay⁵ and Nunzio Bottini^1,2, ¹Cellular Biology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, ²Department of Medicine, University of California, San Diego, La Jolla, CA, ³Developmental Immunology, La Jolla Institute for Allergy and Immunology, La Jolla, CA, ⁴Clinical Science, Broegelmann Research Laboratory, Bergen, Norway, ⁵Goodman Cancer Centre, McGill University, Montréal, QC, Canada
Background/Purpose: Genome-wide association studies have linked polymorphisms in the PTPN2 locus to rheumatoid arthritis (RA). PTPN2 encodes the tyrosine phosphatase TC-PTP, an important regulator of…
Abstract Number: 1912 • 2016 ACR/ARHP Annual Meeting
A New Avenue of Immune Regulation Conferred By Self-Glycerophospholipids Via Mobilization and Migration of Myeloid-Derived Suppressor Cells
Ramesh Halder¹ and Ram R. Singh^1,2,3, ¹Autoimmunity and Tolerance Laboratory, Department of Medicine/Rheumatology, UCLA, Los Angeles, CA, ²Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, CA, ³Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, CA
Background/Purpose: Lipids function as essential components of biological membranes, as signaling molecules, and as energy storage molecules. Glycerol-based phospholipids, called glycerophospholipids (GPL), are the most…
Abstract Number: 2089 • 2016 ACR/ARHP Annual Meeting
Deviation of T and B Cell Subset and Its Association with Single Nucleotide Polymorphisms in Patients with Antiphospholipid Syndrome
Ryo Hisada¹, Masaru Kato¹, Hisako Nakagawa², Eri Sugawara¹, Masatoshi Kanda¹, Kazumasa Ohmura¹, Ikuma Nakagawa¹, Kenji Oku¹, Toshiyuki Bohgaki¹, Olga Amengual¹, Tetsuya Horita¹, Shinsuke Yasuda¹ and Tatsuya Atsumi¹, ¹Division of Rheumatology, Endocrinology and Nephrology, Hokkaido University Graduate School of Medicine, Sapporo, Japan, ²Department of Probiotics Immunology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Japan
Background/Purpose: Antiphospholipid syndrome (APS) is a well-characterized autoimmune and thrombotic disorder but its pathogenesis remains to be elucidated. Genomic studies have revealed the association of signal…

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