Abstracts tagged "autophagy"

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: 904 • 2017 ACR/ARHP Annual Meeting
Deficient Autophagy Induces Lamin a/C Accumulation in Aging and Osteoarthritis
Paloma Lopez de Figueroa¹, Uxia Nogueira-Recalde², Fernando Osorio³, Martin Lotz⁴, Carlos Lopez-Otin³, Francisco J Blanco² and Beatriz Carames¹, ¹Cartilage Biology Group. Rheumatology Division, INIBIC-CHUAC, A Coruña, Spain, A Coruña, Spain, ²Cartilage Biology Group. Rheumatology Division, INIBIC-CHUAC, A Coruña, A Coruña, Spain, ³Degradome Lab, Universidad de Oviedo, Oviedo, Spain, ⁴Department of Molecular & Experience Medicine, Scripps Research Institute, LaJolla, CA
Background/Purpose: Autophagy, an essential chondrocyte homeostasis mechanism, is defective in Aging and Osteoarthritis (OA). However, the targets regulating this mechanism are still unknown. Here, we…
Abstract Number: 975 • 2017 ACR/ARHP Annual Meeting
IL-17A Induced Autophagy That the Proliferation of Rheumatoid Arthritis Fibroblast-like Synoviocytes through Down-Regulation of PI3K/AKT/mTOR Signaling Pathway
Sang-Hyon Kim¹, Jihye Bang², Ji-Min Kim¹, Chang-Nam Son¹, Jin-Nyeong Chae¹ and Hye-Jin Jeong³, ¹Division of Rheumatology, Department of Internal Medicine, Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea, Daegu, Korea, Republic of (South), ²Division of Rheumatology, Department of Internal Medicine, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea, Republic of (South), ³Department of Rheumatology, Keimyung University Dongsan Medical Center, Daegu, Korea, Republic of (South)
Background/Purpose: Autophagy is generally thought of as a survival mechanism, although its deregulation has been linked to non-apoptotic cell death. Fibroblast-like synoviocytes (FLS) resistance to…
Abstract Number: 1434 • 2017 ACR/ARHP Annual Meeting
COX-2 Inhibitor Contributes Cell Death in Rheumatoid Arthritis Fibroblast-like Synoviocytes Via PI3K/AKT/mTOR Signaling Pathway Triggered By Autophagy
Sang-Hyon Kim¹, Jihye Bang², Ji-Min Kim¹, Chang-Nam Son¹, Jin-Nyeong Chae¹ and Hye-Jin Jeong³, ¹Division of Rheumatology, Department of Internal Medicine, Keimyung University Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea, Daegu, Korea, Republic of (South), ²Division of Rheumatology, Department of Internal Medicine, Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Korea, Republic of (South), ³Department of Rheumatology, Keimyung University Dongsan Medical Center, Daegu, Korea, Republic of (South)
Background/Purpose: Recently, the possibilities that autophagy regulates apoptosis resistance and hyperplasia of fibroblast-like synoviocytes (FLS) were also presented. The aim of this study is to…
Abstract Number: 1745 • 2017 ACR/ARHP Annual Meeting
Autophagic Memory in Stress Experienced Human T Cells
Pavanish Kumar¹, Jorg van Loosdregt², Suzan Saidin¹, Bhairav Paleja¹ and Salvatore Albani¹, ¹SingHealth Translational Immunology and Inflammation Centre (STIIC), Duke-NUS Medical School, Singapore, Singapore, ²Laboratory for Translational immunology, University Medical Center Utrecht, Utrecht, Netherlands
Background/Purpose: Autophagy is central to many key immune related pathways, disregulation of which has been associated with rheumatoid arthritis (RA), cancer and neurodegenerative diseases. Autophagy…
Abstract Number: 1925 • 2017 ACR/ARHP Annual Meeting
TGFβ Promotes Fibrosis By MYST1-Dependent Epigenetic Regulation of Autophagy
Ariella Zehender¹, Neng-Yu Lin², Adrian Stefanica³, Chih-Wei Chen⁴, Alina Soare⁵, Thomas Wohlfahrt⁶, Simon Rauber⁶, Christina Bergmann⁷, Andreas Ramming⁸, Oliver Distler⁹, Georg Schett¹⁰ and Jörg Distler⁵, ¹1Department of Internal Medicine 3 – Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany, ²Department of Internal Medicine III and Institute for Clinical Immunology, University of Erlangen-Nuremberg, Erlangen, Germany, ³1Department of Internal Medicine 3 – Rheumatology and Immunology, University of Erlangen, Erlangen, Germany, ⁴Department of Internal Medicine 3 – Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany, Erlangen, Germany, ⁵Department of Internal Medicine 3 – Rheumatology and Immunology, Universitätsklinikum Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Erlangen, Germany, ⁶Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany, ⁷Department of Internal Medicine 3 and Institute for Clinical Immunology, Friedrich-Alexander-University of Erlangen-Nuremberg and University Hospital Erlangen, Erlangen, Germany, ⁸Department of Internal Medicine 3 – Rheumatology and Immunology, Universitätsklinikum Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and University Hospital Erlangen, Erlangen, Germany, ⁹Department of Rheumatology, University Hospital Zurich, Zurich, Switzerland, ¹⁰Department of Internal Medicine 3 – Rheumatology and Immunology, Department of Internal Medicine 3 and Institute for Clinical Immunology, Friedrich-Alexander-University of Erlangen-Nuremberg and University Hospital Erlangen, Erlangen, Germany
Background/Purpose: Autophagy (Atg) is catabolic process allowing cells to degrade unnecessary or dysfunctional cellular organelles. Aberrant activation of Atg has been implicated into the pathogenesis…
Abstract Number: 1926 • 2017 ACR/ARHP Annual Meeting
Cardiac Remodeling in Systemic Sclerosis: TGF-β/Fra2-Dependent Autophagy As a Novel Target for Heart Fibrosis
Mara Stellato¹, Michal Rudnik¹, Florian Renoux¹, Elena Pachera¹, Karl Sotlar², Karin Klingel³, Joerg C. Henes⁴, Przemyslaw Blyszczuk^1,5, Oliver Distler¹ and Gabriela Kania¹, ¹Department of Rheumatology, Center of Experimental Rheumatology, University Hospital Zurich, Zurich, Switzerland, ²Institute of Pathology, Ludwig Maximilians University, Munich, Germany, ³Department of Molecular Pathology, University Hospital Tuebingen, Tuebingen, Germany, ⁴Department of Internal Medicine II, Division of Rheumatology, University Hospital Tuebingen, Tuebingen, Germany, ⁵Department of Clinical Immunology, Jagiellonian University Medical College, Krakow, Poland
Background/Purpose: SSc patients frequently suffer from primary cardiac involvement. The main histological feature is fibrosis, but the mechanisms responsible for the heart failure remain unclear.…
Abstract Number: 1931 • 2017 ACR/ARHP Annual Meeting
Targeting Cartilage Aging As Osteoarthritis Therapeutics By Drug Repurposing
Beatriz Carames¹, Uxia Nogueira-Recalde², Maria I. Loza³, Francisco J Blanco² and Eduardo Dominguez⁴, ¹Cartilage Biology Group. Rheumatology Division, INIBIC–CHUAC, A Coruña, A Coruña, Spain, ²Cartilage Biology Group. Rheumatology Division, INIBIC-CHUAC, A Coruña, A Coruña, Spain, ³BioFarma Research Group. University of Santiago de Compostela, santiago de Compostela, Spain, ⁴BioFarma Research Group. University of Santiago de Compostela, Santiago de Compostela, Spain
Background/Purpose: Background: Effective treatments for Osteoarthritis (OA) are not available. In aging-related diseases, including OA, failure of cellular homeostasis mechanisms, such as autophagy can cause…
Abstract Number: 2128 • 2016 ACR/ARHP Annual Meeting
Autophagic Clearance of Dysfunctional Mitochondria Requires Parkin in Human Chondrocytes
Mohammad Y Ansari¹ and Tariq M. Haqqi², ¹Anatomy & Neurobiology, Northeast Ohio Medical University, Roostown, OH, ²Anatomy & Neurobiology, Northeast Ohio Medical University, Rootstown, OH
Background/Purpose:
Abstract Number: 2132 • 2016 ACR/ARHP Annual Meeting
Deficient Autophagy Induces Premature Senescence in Aging and Osteoarthritis
Beatriz Carames¹, Paloma Lopez de Figueroa¹, Madalena Ribeiro¹, Valentina Calamia², Fernando Osorio³, Carlos Lopez-Otin³ and Francisco J. Blanco^1,4, ¹Cartilage Biology Group. Rheumatology Division, INIBIC-Hospital Universitario A Coruña, A Coruña, Spain, ²Osteoarticular and Aging Research Lab. Proteomics Unit - Associated Node to ProteoRed, Rheumatology Division, Proteomics Group-ProteoRed/ISCIII, INIBIC-CHUAC, A Coruña, Spain, ³Degradome Lab, Universidad de Oviedo, Oviedo, Spain, ⁴Rheumatology Division, INIBIC-Complejo Hospitalario Universitario A Coruña (CHUAC), La Coruña, Spain
Background/Purpose: Previous findings indicated that autophagy is defective in Aging and Osteoarthritis (OA). Autophagy is essential to maintain chondrocyte homeostasis by regulating the intracellular macromolecule…
Abstract Number: 2705 • 2016 ACR/ARHP Annual Meeting
Decreased Expression of Autophagy Genes and Their Association with Spinal Damage in Patients with Ankylosing Spondylitis
Min-Chan Park¹, Hye Won Kim², Jason Jungsik Song¹ and Yong-Beom Park¹, ¹Division of Rheumatology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea, ²Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
Background/Purpose: However, a role of autophagy in ankylosing spondylitis has not been clearly elucidated and the association of autophagy-related gene expression levels with inflammatory or…
Abstract Number: 2705 • 2015 ACR/ARHP Annual Meeting
AAA-Atpase p97-HDAC6 Controlled Poly-Ubiquitin Turnover Regulates Apoptotic and Autophagy-Associated Cell Death in Arthritis
Masaru Kato¹, Kerstin Klein², Caroline Ospelt², Christoph Kolling³, Michihito Kono¹, Shinsuke Yasuda¹, Renate E. Gay⁴, Steffen Gay⁵ and Tatsuya Atsumi¹, ¹Division of Rheumatology, Endocrinology and Nephrology, Hokkaido University Graduate School of Medicine, Sapporo, Japan, ²Center of Experimental Rheumatology, University Hospital Zurich, Zurich, Switzerland, ³Schulthess Clinic, Zurich, Switzerland, ⁴Center of Experimental Rheumatology, University Hospital Zurich, Switzerland, Zurich, Switzerland, ⁵Center of Experimental Rheumatology, University Hospital Zurich, University Zurich, Zurich, Switzerland
Background/Purpose: The AAA-ATPase valosin containing protein (p97) and histone deacetylase 6 (HDAC6) interact with each other and are implicated in the degradation of ubiquitin-labelled proteins.…
Abstract Number: 1146 • 2015 ACR/ARHP Annual Meeting
Deficiency of TLR2 and TLR4 Impairs Autophagic Flux in Chondrocytes
Yun Wang¹, Robert Terkeltaub² and Ru Liu-Bryan³, ¹Medicine-Rheumatology, VA Medical Ctr/UCSD, San Diego, CA, ²Medicine-Rheumatology, VA Medical Ctr/University of California San Diego, San Diego, CA, ³Medicine-Rheumatology, VA Medical Center/University of California San Diego, San Diego, CA
Background/Purpose: We have previously demonstrated that chondrocyte deficient in both TLR2 and TLR4 almost completely abolished pro-catabolic responses to rHMGB1 and LMW-HA, which are known…
Abstract Number: 1128 • 2015 ACR/ARHP Annual Meeting
Insulin-Induced Cartilage Degradation in Osteoarthritis Is Associated to Defective Autophagy
Beatriz Carames¹, Madalena Ribeiro^1,2, Paloma Lopez de Figueroa¹, Alexandrina Mendes² and Francisco J. Blanco¹, ¹Cartilage Biology Group. Rheumatology Division, INIBIC-Hospital Universitario A Coruña, A Coruña, Spain, ²Centre for Neuroscience and Cell Biology, University of Coimbra; Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal
Background/Purpose: Autophagy, a key cellular quality control mechanism, is defective in Osteoarthritis (OA) and Type 2 Diabetes (T2D). T2D has been proposed as a risk…
Abstract Number: 2678 • 2014 ACR/ARHP Annual Meeting
UC-MSCs Inhibit T Cell Autophagy and Apoptosis in Patients with Systemic Lupus Erythematosus through Mitochondrial Transfer
Jinyun Chen¹, Xuebing Feng² and Lingyun Sun², ¹The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China, ²Department of Rheumatology, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, China
Background/Purpose This study is aimed to investigate the role of umbilical cord derived mesenchymal stem cells (UC-MSCs) on autophagy and apoptosis in T cells from…