Abstracts tagged "T cells"

Abstract Number: 1816 • 2014 ACR/ARHP Annual Meeting
Toll-like Receptor 4-Induced Interleukin-1 Defines the Intestinal Microbiome and Mucosal Immune Response in Arthritis-Prone IL-1 Receptor Antagonist Deficient Mice
Tom Ederveen¹, Rebecca Rogier², Jos Boekhorst¹, Harm Wopereis³, Johan Garssen³, Sacha van Hijum¹, Fons A.J. van de Loo², Marije I. Koenders², Wim B. van den Berg² and Shahla Abdollahi-Roodsaz⁴, ¹Centre for Molecular Bioinformatics Nijmegen (CMBI), Radboud university medical center, Nijmegen, Netherlands, ²Experimental Rheumatology, Radboud university medical center, Nijmegen, Netherlands, ³Danone Research, Wageningen, Netherlands, ⁴Rheumatology, Radboud university medical center, Nijmegen, Netherlands
Background/Purpose Interleukin-1 (IL-1) plays a pivotal role in inflammation and autoimmunity. Mice deficient in the IL-1 receptor antagonist (IL-1Ra-/-) spontaneously develop a T cell-driven autoimmune…
Abstract Number: 1604 • 2014 ACR/ARHP Annual Meeting
IFN-γ (Th₁), IL4 (Th₂), and IL5 (Th₂) Are Elevated in Pre-Clinical SLE and Predict Transition to Classified Disease Prior to Appearance of Autoantibodies or Clinical Criteria
Rufei Lu^1,2, Melissa E. Munroe³, Joel M. Guthridge², Krista M. Bean², Dustin Fife², John B. Harley⁴, Judith A. James⁵ and Michael P. Keith⁶, ¹Medicine and Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, ²Arthritis and Clinical Immunology, Oklahoma Medical Research Foundation, Oklahoma City, OK, ³Arthritis and Clinical Immunology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, ⁴Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, ⁵Clinical Arthritis and Immunology, Oklahoma Medical Research Foundation, Oklahoma City, OK, ⁶Rheumatology, Walter Reed National Military Medical Center, Bethesda, MD
Background/Purpose Systemic Lupus Erythematosus (SLE) is a clinically diverse autoimmune disease that often begins with a pre-disease period of autoantibody production and symptom accrual.…
Abstract Number: 642 • 2014 ACR/ARHP Annual Meeting
Treatment with a Glycolipid Ameliorates Lupus Dermatitis and Expands Skin ãä T Cells That Promote the Migration of Langerhans Dendritic Cells
Ram Raj Singh^1,2,3, Anna Eriksson¹, Darshan Randhawa¹ and Miguel-Angel Gutierrez¹, ¹Autoimmunity and Tolerance Laboratory, Department of Medicine/Rheumatology, UCLA, Los Angeles, CA, ²Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, CA, ³Interdepartmental Program in Molecular Toxicology, UCLA, Los Angeles, CA
Background/Purpose: Self antigens are taken from tissues to local lymphoid organs to acquire ability to avoid self-reactivity. This important immune function is accomplished by dendritic…
Abstract Number: 2730 • 2014 ACR/ARHP Annual Meeting
FcγRIIIa Ligation in Human Peripheral CD4⁺ T-Cells Generate T_H17 like Population
Anil K. Chauhan¹, Terry Moore² and Chen Chen³, ¹Rheumatology, Saint Louis University, St. Louis, MO, ²Rheumatology/Immunology, St Louis University, Saint Louis, MO, ³Rheumatology/Internal Medicine, Saint Louis University, St. Louis, MO
Background/Purpose: Cytokines produced during TH17 response, IL-17A and IL17F drive inflammation and autoimmunity. They also act as a bridge between adaptive and innate immunity. Immune…
Abstract Number: 1799 • 2014 ACR/ARHP Annual Meeting
Elevated Indoleamine-2,3-Dioxygenase (IDO) Activity and Kynurinene-3-Monooxygenase (KMO) Expression in Interferon Positive Primary Sjogrens Syndrome Patients Is Associated with Increased CD25^hiFoxP3⁺regulatory Tcells: A Skew Towards Neurotoxicity or an Attempt to Rescue?
Naomi I Maria¹, Cornelia G. van Helden-Meeuwsen¹, Zana Brkic¹, Sandra M.J. Paulissen^1,2, Virgil A. Dalm¹, Paul L. van Daele¹, P. Martin van Hagen¹, Sinead M. Gibney^1,3, Andrew Harkin³, Hemmo A. Drexhage¹, Erik Lubberts^1,2 and Marjan A. Versnel¹, ¹Erasmus Medical Center, Immunology, Rotterdam, Netherlands, ²Erasmus Medical Center, Rheumatology, Rotterdam, Netherlands, ³Trinity College Institute of Neuroscience, Neuropsychopharmacology, Dublin, Ireland
Background/Purpose: A role for indoleamine-2,3-dioxygenase (IDO) in suppression of effector T-cell function and promotion of regulatory T-cell (Treg) differentiation has been described. IDO - the…
Abstract Number: 1602 • 2014 ACR/ARHP Annual Meeting
Th9 Cells in Inflammatory Cascades of Autoimmune Arthritis
Siba Raychaudhuri¹, Anupam Mitra², Ananya Datta Mitra³, Christine Abria⁴ and Smriti K. Raychaudhuri³, ¹Med/Rheumatology, Univ California Davis/VA Sac, Davis, CA, ²Dermatology, VA Sacramento Medical Center, Mather, CA, ³Rheumatology, VA Sacramento Medical Center, Mather, CA, ⁴Research, VA Sacramento Medical Center, Mather, CA
Background/Purpose: Interleukin (IL)-9, a member of IL-2 cytokine family was recently attributed to a novel CD4 T cell subset termed Th9 cells in the murine…
Abstract Number: 639 • 2014 ACR/ARHP Annual Meeting
Lack of Response Gene to Complement-32 Impairs Th17 Differentiation and Attenuates Lupus-like Chronic Graft Versus Host Disease
Vinh Nguyen¹, Cosmin Tegla², Cornelia Cudrici³, Tudor Badea⁴, Horea Rus² and Violeta Rus¹, ¹Medicine, University of Maryland School of Medicine and Veteran Affairs Medical Center, Baltimore, MD, ²Neurology, University of Maryland School of Medicine and Veteran Affairs Medical Center, Baltimore, MD, ³Neurology, University of Maryland School of Medicine, Baltimore, MD, ⁴NIH, National Eye Institute, Bethesda, MD
Background/Purpose . Response Gene to Complement (RGC)-32 was cloned and characterized by our group as one of the genes induced by complement activation. It encodes…
Abstract Number: 2728 • 2014 ACR/ARHP Annual Meeting
Reduction of MAIT Cell Frequency Associated with Reduced Cell Proliferation and Enhanced Cell Death in Systemic Lupus Erythematosus
Asako Chiba¹, Naoto Tamura², Eri Hayashi², Ran Matsudaira³, Yoshinari Takasaki⁴ and Sachiko Miyake¹, ¹Immunology, Juntendo University School of Medicine, Tokyo, Japan, ²Rheumatology, Juntendo University School of Medicine, Tokyo, Japan, ³Department of Internal Medicine and Rheumatology, Juntendo University School of Medicine, Tokyo, Japan, ⁴Department of Rheumatology, Juntendo University School of Medicine, Tokyo, Japan
Background/Purpose: Mucosal-associated invariant T (MAIT) cells are innate-like lymphocytes which are restricted by the MHC-related molecule-1 (MR1) and express a semi-invariant TCRα chain: Vα7.2-Jα33 in…
Abstract Number: 1752 • 2014 ACR/ARHP Annual Meeting
CD30 As a Target of Aptamers and Delivery Portal for Aptamer-shRNA to Block Th17 Cells
Cong-Qiu Chu¹, Pingfang Song², Yuan K. Chou³ and Shao Tao², ¹Rheumatology, Oregon Health & Science Univ, Portland, OR, ²Oregon Health & Science University, Portland, OR, ³Division of Arthritis and Rheumatic Diseases, Oregon Health & Science University, Portland, OR
Background/Purpose Aptamers are single-stranded 20 –100 nucleotides (RNA or DNA) that bind to molecular targets with high affinity and specificity due to their stable three…
Abstract Number: 1541 • 2014 ACR/ARHP Annual Meeting
Distinct Regulation of T Helper Cell Differentiation By Biologic DMARD Therapy in Rheumatoid Arthritis
Shingo Nakayamada¹, Satoshi Kubo¹, Maiko Yoshikawa¹, Naoki Yunoue¹, Yusuke Miyazaki¹, Kazuyoshi Saito¹ and Yoshiya Tanaka², ¹The First Department of Internal Medicine, University of Occupational and Environmental Health, Japan, Kitakyushu, Japan, ²University of Occupational and Environmental Health, Japan, Kitakyushu, Japan
Background/Purpose: In the pathogenesis of rheumatoid arthritis (RA), T helper cells can differentiate into functionally distinct subsets, leading to the persistent inflammation and immune abnormality…
Abstract Number: 606 • 2014 ACR/ARHP Annual Meeting
The Immunological Basis of the Sex-Bias in Ankylosing Spondylitis: Th17 Expansion Is Restricted to Male Patients and Correlates with Sex-Related Alteration in Vitamin D Metabolism
Eric Gracey^1,2, Blerta Green², Paul Yip³, Renise Ayearst⁴, Ammepa Anton⁵, Aifeng Lin² and Robert D. Inman⁶, ¹Immunology, University of Toronto, Toronto, ON, Canada, ²Genetics and Development, University Health Network, Toronto, ON, Canada, ³Clinical Biochemistry, University Health Network, Toronto, ON, Canada, ⁴University Health Network, Toronto, ON, Canada, ⁵Rheumatology, University Health Network, Toronto, ON, Canada, ⁶Immunlogy and Institute of Medical Science, University of Toronto and Toronto Western Hospital, Toronto, ON, Canada
Background/Purpose : Ankylosing spondylitis (AS) is an inflammatory arthritis of the spine, which has a major impact on function and quality of life. AS is…
Abstract Number: 2727 • 2014 ACR/ARHP Annual Meeting
T Cells Trigger Interstitial Pneumonia in Polymyositis
Akira Takeda^1,2, Yasutsugu Fukushima³, Takaji Matsutani⁴, Yoichiro Haji¹, Chisun Min¹, Ryo Rokutanda¹, Yasuhiro Suyama¹, Mitsumasa Kishimoto⁵, Ken-ichi Yamaguchi¹ and Masato Okada⁶, ¹Immuno-Rheumatology Center, St. Luke's International Hospital, Tokyo, Japan, ²Division of Clinical Immunology & Rheumatology, International University of Health and Welfare Hospital, Nasu-shiobara, Japan, ³Department of Pulmonary Medicine and Clinical Immunology, Dokkyo University School of Medicine, Mibu, Japan, ⁴Laboratory of Immune Regulation, Wakayama Medical University, Ibaraki, Japan, ⁵St. Luke's International Hospital, Tokyo, Japan, ⁶Immuno-Rheumatology Center, St. Luke's International Hospital, tokyo, Japan
Background/Purpose: The lung is frequently affected in connective tissue diseases (CTDs). Polymyositis (PM) is a major CTD characterized by idiopathic inflammatory lesions of muscle and…
Abstract Number: 1751 • 2014 ACR/ARHP Annual Meeting
CD4 Aptamer-RORγt shRNA Chimera Inhibits IL-17 Synthesis By Human CD4⁺ T cells
Cong-Qiu Chu¹, Pingfang Song², Yuan K. Chou³, Xiaowei Zhang², Roberto Meza-Romero², Kentaro Yomogida³ and Gil Benedek², ¹Rheumatology, Oregon Health & Science Univ, Portland, OR, ²Oregon Health & Science University, Portland, OR, ³Division of Arthritis and Rheumatic Diseases, Oregon Health & Science University, Portland, OR
Background/Purpose RNA interfering (RNAi)-mediated gene silencing holds great promise for manipulating T cells to study basic T cell biology and for developing potential T cell…
Abstract Number: 1495 • 2014 ACR/ARHP Annual Meeting
Preclinical and Clinical Phase I Profile of MK-8457, a Selective Spleen Tyrosine Kinase and Zeta-Chain-Associated Protein Kinase 70 Inhibitor, Developed for the Treatment of Rheumatoid Arthritis
Gene Marcantonio¹, Alan Bass², Gretchen Baltus³, Judith Boice¹, Hongmin Chen⁴, Michael Crackower⁵, Jeroen Elassaiss-Schaap⁶, Michael Ellis⁷, Tomoko Freshwater⁸, Francois Gervais⁹, Jane Guo¹⁰, Sammy Kim⁹, Lily Moy⁵, Alan Northrup⁷, Jie Zhang-Hoover⁴, Mathew Maddess¹¹, Richard Miller¹², Marcella Ruddy⁵, Stella Vincent¹³, Haoling Weng¹ and Hani Houshyar¹⁴, ¹Merck & Co., Whitehouse Station, NJ, ²Safety Assessment, Merck & Co., Boston, MA, ³Immunomodulatory Regulators, Merck & Co., Boston, MA, ⁴Pharmacology, Merck & Co., Boston, MA, ⁵Merck & Co., Boston, MA, ⁶Clinical PK-PD, Merck & Co., Oss, Netherlands, ⁷Medicinal Chemistry, Merck & Co., Boston, MA, ⁸PPDM Early Stage, Merck & Co., Rahway, NJ, ⁹Cell Pathways and Proteins, Merck & Co., Boston, MA, ¹⁰Immunology, Merck & Co., Boston, MA, ¹¹Discovery Process Chemistry, Merck & Co., Boston, MA, ¹²Biochemistry & Biophysics, Merck & Co., Boston, MA, ¹³PPDM Preclinical ADME, Merck & Co., Boston, MA, ¹⁴33 Avenue Louis Pasteur, Merck & Co., Boston, MA
Background/Purpose: Spleen tyrosine kinase (SYK) is a potential target for treatment of several diseases including rheumatoid arthritis. SYK is a member of the Zeta-chain-associated protein…
Abstract Number: 397 • 2014 ACR/ARHP Annual Meeting
Th9 Lymphocytes in Rheumatoid Arthritis
Rossella Talotta¹, Angela Berzi², Fabiola Atzeni¹, Donata Dell'Acqua¹, Piercarlo Sarzi-Puttini¹ and Daria Trabattoni², ¹Rheumatology Unit, L. Sacco University Hospital, Milan, Italy, ²Chair of Immunology, Department of Biomedical and Clinical Sciences “L. Sacco, Milan, Italy
Background/Purpose Th9 cells are IL-9-secreting Th lymphocytes that are involved in the immunological responses underlying parasitic infections and allergic diseases. In the case of autoimmune…

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