1
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Kommer A, Meineck M, Classen P, Weinmann-Menke J. A20 in Kidney Transplantation and Autoimmunity. Int J Mol Sci 2024; 25:6628. [PMID: 38928333 DOI: 10.3390/ijms25126628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 06/06/2024] [Accepted: 06/08/2024] [Indexed: 06/28/2024] Open
Abstract
A20, the central inhibitor of NFκB, has multiple anti-inflammatory properties, making it an interesting target in kidney autoimmune disease and transplant biology. It has been shown to be able to inhibit inflammatory functions in macrophages, dendritic cells, T cells, and B cells in various ways, leading to less tissue damage and better graft outcomes. In this review, we will discuss the current literature regarding A20 in kidney transplantation and autoimmunity. Future investigations on animal models and in existing immunosuppressive therapies are needed to establish A20 as a therapeutic target in kidney transplantation and autoimmunity. Cell-based therapies, modified viruses or RNA-based therapies could provide a way for A20 to be utilized as a promising mediator of inflammation and tissue damage.
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Affiliation(s)
- Andreas Kommer
- Department of Nephrology, I. Department of Medicine, University Medical Center Mainz, Johannes Gutenberg University, D 55131 Mainz, Germany
| | - Myriam Meineck
- Department of Nephrology, I. Department of Medicine, University Medical Center Mainz, Johannes Gutenberg University, D 55131 Mainz, Germany
| | - Paul Classen
- Department of Nephrology, I. Department of Medicine, University Medical Center Mainz, Johannes Gutenberg University, D 55131 Mainz, Germany
| | - Julia Weinmann-Menke
- Department of Nephrology, I. Department of Medicine, University Medical Center Mainz, Johannes Gutenberg University, D 55131 Mainz, Germany
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2
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Xu F, Chen H, Zhou C, Zang T, Wang R, Shen S, Li C, Yu Y, Pei Z, Shen L, Qian J, Ge J. Targeting deubiquitinase OTUB1 protects vascular smooth muscle cells in atherosclerosis by modulating PDGFRβ. Front Med 2024; 18:465-483. [PMID: 38644399 DOI: 10.1007/s11684-024-1056-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 12/04/2023] [Indexed: 04/23/2024]
Abstract
Atherosclerosis is a chronic artery disease that causes various types of cardiovascular dysfunction. Vascular smooth muscle cells (VSMCs), the main components of atherosclerotic plaque, switch from contractile to synthetic phenotypes during atherogenesis. Ubiquitylation is crucial in regulating VSMC phenotypes in atherosclerosis, and it can be reversely regulated by deubiquitinases. However, the specific effects of deubiquitinases on atherosclerosis have not been thoroughly elucidated. In this study, RNAi screening in human aortic smooth muscle cells was performed to explore the effects of OTU family deubiquitinases, which revealed that silencing OTUB1 inhibited PDGF-BB-stimulated VSMC phenotype switch. Further in vivo studies using Apoe-/- mice revealed that knockdown of OTUB1 in VSMCs alleviated atherosclerosis plaque burden in the advanced stage and led to a stable plaque phenotype. Moreover, VSMC proliferation and migration upon PDGF-BB stimulation could be inhibited by silencing OTUB1 in vitro. Unbiased RNA-sequencing data indicated that knocking down OTUB1 influenced VSMC differentiation, adhesion, and proliferation. Mass spectrometry of ubiquitinated protein confirmed that proteins related to cell growth and migration were differentially ubiquitylated. Mechanistically, we found that OTUB1 recognized the K707 residue ubiquitylation of PDGFRβ with its catalytic triad, thereby reducing the K48-linked ubiquitylation of PDGFRβ. Inhibiting OTUB1 in VSMCs could promote PDGFRβ degradation via the ubiquitin-proteasome pathway, so it was beneficial in preventing VSMCs' phenotype switch. These findings revealed that knocking down OTUB1 ameliorated VSMCs' phenotype switch and atherosclerosis progression, indicating that OTUB1 could be a valuable translational therapeutic target in the future.
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Affiliation(s)
- Fei Xu
- Department of Cardiology and Laboratory of Heart Valve Disease, West China Hospital, Sichuan University, Chengdu, 610041, China
- Department of Cardiology, Zhongshan Hospital, Fudan University, Research Unit of Cardiovascular Techniques and Devices, Chinese Academy of Medical Sciences, Shanghai, 200032, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China
- National Clinical Research Center for Interventional Medicine & Shanghai Clinical Research Center for Interventional Medicine (19MC1910300), Shanghai, 200032, China
| | - Han Chen
- Department of Cardiology, Zhongshan Hospital, Fudan University, Research Unit of Cardiovascular Techniques and Devices, Chinese Academy of Medical Sciences, Shanghai, 200032, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China
- National Clinical Research Center for Interventional Medicine & Shanghai Clinical Research Center for Interventional Medicine (19MC1910300), Shanghai, 200032, China
| | - Changyi Zhou
- Department of Cardiology, Zhongshan Hospital, Fudan University, Research Unit of Cardiovascular Techniques and Devices, Chinese Academy of Medical Sciences, Shanghai, 200032, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China
- National Clinical Research Center for Interventional Medicine & Shanghai Clinical Research Center for Interventional Medicine (19MC1910300), Shanghai, 200032, China
| | - Tongtong Zang
- Department of Cardiology, Zhongshan Hospital, Fudan University, Research Unit of Cardiovascular Techniques and Devices, Chinese Academy of Medical Sciences, Shanghai, 200032, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China
- National Clinical Research Center for Interventional Medicine & Shanghai Clinical Research Center for Interventional Medicine (19MC1910300), Shanghai, 200032, China
| | - Rui Wang
- Department of Cardiology, Zhongshan Hospital, Fudan University, Research Unit of Cardiovascular Techniques and Devices, Chinese Academy of Medical Sciences, Shanghai, 200032, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China
- National Clinical Research Center for Interventional Medicine & Shanghai Clinical Research Center for Interventional Medicine (19MC1910300), Shanghai, 200032, China
| | - Shutong Shen
- Department of Cardiology, Zhongshan Hospital, Fudan University, Research Unit of Cardiovascular Techniques and Devices, Chinese Academy of Medical Sciences, Shanghai, 200032, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China
- National Clinical Research Center for Interventional Medicine & Shanghai Clinical Research Center for Interventional Medicine (19MC1910300), Shanghai, 200032, China
| | - Chaofu Li
- Department of Cardiology, Zhongshan Hospital, Fudan University, Research Unit of Cardiovascular Techniques and Devices, Chinese Academy of Medical Sciences, Shanghai, 200032, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China
- National Clinical Research Center for Interventional Medicine & Shanghai Clinical Research Center for Interventional Medicine (19MC1910300), Shanghai, 200032, China
| | - Yue Yu
- Department of Cardiology, Zhongshan Hospital, Fudan University, Research Unit of Cardiovascular Techniques and Devices, Chinese Academy of Medical Sciences, Shanghai, 200032, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China
- National Clinical Research Center for Interventional Medicine & Shanghai Clinical Research Center for Interventional Medicine (19MC1910300), Shanghai, 200032, China
| | - Zhiqiang Pei
- Department of Cardiology, Zhongshan Hospital, Fudan University, Research Unit of Cardiovascular Techniques and Devices, Chinese Academy of Medical Sciences, Shanghai, 200032, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China
- National Clinical Research Center for Interventional Medicine & Shanghai Clinical Research Center for Interventional Medicine (19MC1910300), Shanghai, 200032, China
| | - Li Shen
- Department of Cardiology, Zhongshan Hospital, Fudan University, Research Unit of Cardiovascular Techniques and Devices, Chinese Academy of Medical Sciences, Shanghai, 200032, China.
- Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China.
- National Clinical Research Center for Interventional Medicine & Shanghai Clinical Research Center for Interventional Medicine (19MC1910300), Shanghai, 200032, China.
| | - Juying Qian
- Department of Cardiology, Zhongshan Hospital, Fudan University, Research Unit of Cardiovascular Techniques and Devices, Chinese Academy of Medical Sciences, Shanghai, 200032, China.
- Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China.
- National Clinical Research Center for Interventional Medicine & Shanghai Clinical Research Center for Interventional Medicine (19MC1910300), Shanghai, 200032, China.
| | - Junbo Ge
- Department of Cardiology, Zhongshan Hospital, Fudan University, Research Unit of Cardiovascular Techniques and Devices, Chinese Academy of Medical Sciences, Shanghai, 200032, China.
- Shanghai Institute of Cardiovascular Diseases, Shanghai, 200032, China.
- National Clinical Research Center for Interventional Medicine & Shanghai Clinical Research Center for Interventional Medicine (19MC1910300), Shanghai, 200032, China.
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3
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Baek J, Shin HS, Suk K, Lee WH. LINC01686 affects LPS-induced cytokine expression via the miR-18a-5p/A20/STAT1 axis in THP-1 cells. Immun Inflamm Dis 2024; 12:e1234. [PMID: 38578001 PMCID: PMC10996380 DOI: 10.1002/iid3.1234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 02/20/2024] [Accepted: 03/13/2024] [Indexed: 04/06/2024] Open
Abstract
BACKGROUND AND OBJECTIVE Long noncoding RNAs (lncRNAs) are crucial in regulating various physiological and pathological processes, including immune responses. LINC01686 is a lncRNA with previously uncharacterized functions in immune regulation. This study aims to investigate the function of LINC01686 in lipopolysaccharide (LPS)-induced inflammatory responses in the human monocytic leukemia cell line THP-1 and its potential regulatory mechanisms involving miR-18a-5p and the anti-inflammatory protein A20. METHOD THP-1 cells were stimulated with LPS to induce inflammatory responses, followed by analysis of LINC01686 expression levels. The role of LINC01686 in regulating the expression of interleukin (IL)-6, IL-8, A20, and signal transducer and activator of transcription 1 (STAT1) was examined using small interfering RNA-mediated knockdown. Additionally, the involvement of miR-18a-5p in LINC01686-mediated regulatory pathways was assessed by transfection with decoy RNAs mimicking the miR-18a-5p binding sites of LINC01686 or A20 messenger RNA. RESULTS LINC01686 expression was upregulated in THP-1 cells following LPS stimulation. Suppression of LINC01686 enhanced LPS-induced expression of IL-6 and IL-8, mediated through increased production of reactive oxygen species. Moreover, LINC01686 knockdown upregulated the expression and activation of IκB-ζ, STAT1, and downregulated A20 expression. Transfection with decoy RNAs reversed the effects of LINC01686 suppression on A20, STAT1, IL-6, and IL-8 expression, highlighting the role of LINC01686 in sponging miR-18a-5p and regulating A20 expression. CONCLUSION This study provides the first evidence that LINC01686 plays a critical role in modulating LPS-induced inflammatory responses in THP-1 cells by sponging miR-18a-5p, thereby regulating the expression and activation of A20 and STAT1. These findings shed light on the complex regulatory mechanisms involving lncRNAs in immune responses and offer potential therapeutic targets for inflammatory diseases.
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Affiliation(s)
- Jongwon Baek
- School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, South Korea
| | - Hyeung-Seob Shin
- School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, South Korea
| | - Kyoungho Suk
- Department of Pharmacology, Brain Science & Engineering Institute, BK21 FOUR KNU Biomedical Convergence Program, Kyungpook National University School of Medicine, Daegu, South Korea
| | - Won-Ha Lee
- School of Life Sciences, BK21 FOUR KNU Creative BioResearch Group, Kyungpook National University, Daegu, South Korea
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4
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Karri U, Harasimowicz M, Carpio Tumba M, Schwartz DM. The Complexity of Being A20: From Biological Functions to Genetic Associations. J Clin Immunol 2024; 44:76. [PMID: 38451381 DOI: 10.1007/s10875-024-01681-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 02/27/2024] [Indexed: 03/08/2024]
Abstract
A20, encoded by TNFAIP3, is a critical negative regulator of immune activation. A20 is a ubiquitin editing enzyme with multiple domains, each of which mediates or stabilizes a key ubiquitin modification. A20 targets diverse proteins that are involved in pleiotropic immunologic pathways. The complexity of A20-mediated immunomodulation is illustrated by the varied effects of A20 deletion in different cell types and disease models. Clinically, the importance of A20 is highlighted by its extensive associations with human disease. A20 germline variants are associated with a wide range of inflammatory diseases, while somatic mutations promote development of B cell lymphomas. More recently, the discovery of A20 haploinsufficiency (HA20) has provided real world evidence for the role of A20 in immune cell function. Originally described as an autosomal dominant form of Behcet's disease, HA20 is now considered a complex inborn error of immunity with a broad spectrum of immunologic and clinical phenotypes.
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Affiliation(s)
- Urekha Karri
- Departments of Medicine and Immunology, Division of Rheumatology and Clinical Immunology, University of Pittsburgh, 200 Lothrop St., Pittsburgh, PA, 15213, USA
- Department of Human Genetics, University of Pittsburgh, Pittsburgh, PA, USA
| | - Magdalena Harasimowicz
- Departments of Medicine and Immunology, Division of Rheumatology and Clinical Immunology, University of Pittsburgh, 200 Lothrop St., Pittsburgh, PA, 15213, USA
| | - Manuel Carpio Tumba
- Departments of Medicine and Immunology, Division of Rheumatology and Clinical Immunology, University of Pittsburgh, 200 Lothrop St., Pittsburgh, PA, 15213, USA
| | - Daniella M Schwartz
- Departments of Medicine and Immunology, Division of Rheumatology and Clinical Immunology, University of Pittsburgh, 200 Lothrop St., Pittsburgh, PA, 15213, USA.
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5
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Castaneda AB, Petty LE, Scholz M, Jansen R, Weiss S, Zhang X, Schramm K, Beutner F, Kirsten H, Schminke U, Hwang SJ, Marzi C, Dhana K, Seldenrijk A, Krohn K, Homuth G, Wolf P, Peters MJ, Dörr M, Peters A, van Meurs JBJ, Uitterlinden AG, Kavousi M, Levy D, Herder C, van Grootheest G, Waldenberger M, Meisinger C, Rathmann W, Thiery J, Polak J, Koenig W, Seissler J, Bis JC, Franceshini N, Giambartolomei C, Hofman A, Franco OH, Penninx BWJH, Prokisch H, Völzke H, Loeffler M, O'Donnell CJ, Below JE, Dehghan A, de Vries PS. Associations of carotid intima media thickness with gene expression in whole blood and genetically predicted gene expression across 48 tissues. Hum Mol Genet 2022; 31:1171-1182. [PMID: 34788810 PMCID: PMC8976428 DOI: 10.1093/hmg/ddab236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 06/11/2021] [Accepted: 08/11/2021] [Indexed: 11/13/2022] Open
Abstract
Carotid intima media thickness (cIMT) is a biomarker of subclinical atherosclerosis and a predictor of future cardiovascular events. Identifying associations between gene expression levels and cIMT may provide insight to atherosclerosis etiology. Here, we use two approaches to identify associations between mRNA levels and cIMT: differential gene expression analysis in whole blood and S-PrediXcan. We used microarrays to measure genome-wide whole blood mRNA levels of 5647 European individuals from four studies. We examined the association of mRNA levels with cIMT adjusted for various potential confounders. Significant associations were tested for replication in three studies totaling 3943 participants. Next, we applied S-PrediXcan to summary statistics from a cIMT genome-wide association study (GWAS) of 71 128 individuals to estimate the association between genetically determined mRNA levels and cIMT and replicated these analyses using S-PrediXcan on an independent GWAS on cIMT that included 22 179 individuals from the UK Biobank. mRNA levels of TNFAIP3, CEBPD and METRNL were inversely associated with cIMT, but these associations were not significant in the replication analysis. S-PrediXcan identified associations between cIMT and genetically determined mRNA levels for 36 genes, of which six were significant in the replication analysis, including TLN2, which had not been previously reported for cIMT. There was weak correlation between our results using differential gene expression analysis and S-PrediXcan. Differential expression analysis and S-PrediXcan represent complementary approaches for the discovery of associations between phenotypes and gene expression. Using these approaches, we prioritize TNFAIP3, CEBPD, METRNL and TLN2 as new candidate genes whose differential expression might modulate cIMT.
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Affiliation(s)
- Andy B Castaneda
- Human Genetics Center, Department of Epidemiology, Human Genetics, and Environmental Sciences, School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Lauren E Petty
- Vanderbilt Genetics Institute, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Markus Scholz
- Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig, Germany.,LIFE Research Center of Civilization Diseases, University of Leipzig, Leipzig, Germany
| | - Rick Jansen
- Department of Psychiatry, VU University Medical Center, Amsterdam, the Netherlands
| | - Stefan Weiss
- Interfaculty Institute for Genetics and Functional Genomics, University Medicine Greifswald, Greifswald, Germany.,DZHK (German Center for Cardiovascular Research), partner site Greifswald, Greifswald, Germany
| | - Xiaoling Zhang
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA.,Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA.,The Framingham Heart Study, Framingham, MA, USA
| | - Katharina Schramm
- Institute of Neurogenomics, Helmholz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany.,Institute of Human Genetics, Technical University Munich, Munich, Germany
| | | | - Holger Kirsten
- Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig, Germany.,LIFE Research Center of Civilization Diseases, University of Leipzig, Leipzig, Germany
| | - Ulf Schminke
- Department of Neurology, University Medicine Greifswald, Greifswald, Germany
| | - Shih-Jen Hwang
- The Framingham Heart Study, Framingham, MA, USA.,Population Sciences Branch, Division of Intramural Research, National Heart, Lung and Blood Institute, Bethesda, MD, USA
| | - Carola Marzi
- Institute of Epidemiology, Helmholz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany.,German Center for Diabetes Research (DZD e.V.), Neuherberg, Germany
| | - Klodian Dhana
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands.,Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Adrie Seldenrijk
- Department of Psychiatry, VU University Medical Center, Amsterdam, the Netherlands
| | - Knut Krohn
- Interdisciplinary Center of Clinical Research, University of Leipzig, Leipzig, Germany
| | - Georg Homuth
- Interfaculty Institute for Genetics and Functional Genomics, University Medicine Greifswald, Greifswald, Germany
| | - Petra Wolf
- Institute of Neurogenomics, Helmholz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany.,Institute of Human Genetics, Technical University Munich, Munich, Germany
| | - Marjolein J Peters
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Marcus Dörr
- DZHK (German Center for Cardiovascular Research), partner site Greifswald, Greifswald, Germany.,Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany
| | - Annette Peters
- Institute of Epidemiology, Helmholz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - Joyce B J van Meurs
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - André G Uitterlinden
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands.,Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Maryam Kavousi
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Daniel Levy
- The Framingham Heart Study, Framingham, MA, USA.,Population Sciences Branch, Division of Intramural Research, National Heart, Lung and Blood Institute, Bethesda, MD, USA
| | - Christian Herder
- Institute of Clinical Diabetology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany.,German Center for Diabetes Research (DZD e.V.), München-Neuherberg, Germany.,Division of Endocrinology and Diabetology, Medical Faculty, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | | | - Melanie Waldenberger
- Institute of Epidemiology, Helmholz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
| | - Christa Meisinger
- Institute of Epidemiology, Helmholz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany.,Chair of Epidemiology, Ludwig-Maximilians-Universität München, UNIKA-T Augsburg, Augsburg, Germany
| | - Wolfgang Rathmann
- Institute of Biometrics and Epidemiology, German Diabetes Center, Leibniz Center for Diabetes Research at Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Joachim Thiery
- LIFE Research Center of Civilization Diseases, University of Leipzig, Leipzig, Germany.,Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig, Leipzig, Germany
| | - Joseph Polak
- Tufts University School of Medicine, Boston, MA, USA
| | - Wolfgang Koenig
- Deutsches Herzzentrum München, Technische Universität München, Munich, Germany.,DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany.,Department of Internal Medicine II-Cardiology, University of Ulm Medical Center, Ulm, Germany
| | - Jochen Seissler
- Diabetes Center, Diabetes Research Group, Medizinische Klinik und Poliklinik IV, Ludwig-Maximilians-Universität, Munich, Germany
| | - Joshua C Bis
- Cardiovascular Health Research Unit, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Nora Franceshini
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
| | | | | | - Albert Hofman
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands.,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Oscar H Franco
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands.,Institute of Social and Preventive Medicine, University of Bern, Switzerland
| | - Brenda W J H Penninx
- Department of Psychiatry, VU University Medical Center, Amsterdam, the Netherlands
| | - Holger Prokisch
- Institute of Neurogenomics, Helmholz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany.,Institute of Human Genetics, Technical University Munich, Munich, Germany
| | - Henry Völzke
- DZHK (German Center for Cardiovascular Research), partner site Greifswald, Greifswald, Germany.,Institute of Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Markus Loeffler
- Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig, Germany.,LIFE Research Center of Civilization Diseases, University of Leipzig, Leipzig, Germany
| | - Christopher J O'Donnell
- The Framingham Heart Study, Framingham, MA, USA.,Cardiology Section, Department of Medicine, Boston Veteran's Administration Healthcare and Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Jennifer E Below
- Vanderbilt Genetics Institute, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Abbas Dehghan
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands.,Department of Epidemiology and Biostatistics, Imperial College London, London, UK.,MRC-PHE Centre for Environment and Health, School of Public Health, Imperial College London, Norfolk Place, London, UK.,UK Dementia Research Institute at Imperial College London, Burlington Danes Building, Hammersmith Hospital, Du Cane Road, London W12 0NN UK
| | - Paul S de Vries
- Human Genetics Center, Department of Epidemiology, Human Genetics, and Environmental Sciences, School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX, USA.,Department of Epidemiology, Erasmus University Medical Center, Rotterdam, the Netherlands
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6
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Rossi MN, Federici S, Uva A, Passarelli C, Celani C, Caiello I, Matteo V, Petrocchi S, Mortari EP, De Benedetti F, Prencipe G, Insalaco A. Identification of a Novel Mutation in TNFAIP3 in a Family With Poly-Autoimmunity. Front Immunol 2022; 13:804401. [PMID: 35154120 PMCID: PMC8825778 DOI: 10.3389/fimmu.2022.804401] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 01/11/2022] [Indexed: 12/25/2022] Open
Abstract
Haploinsufficiency of A20 (HA20) is an inflammatory disease caused by mutations in the TNFAIP3 gene classically presenting with Behcet’s-like disease. A20 acts as an inhibitor of inflammation through its effect on NF-kB pathway. Here we describe four consanguineous patients (three sisters and their mother) with a predominantly autoimmune phenotype, including thyroiditis, type I diabetes, hemolytic anemia and chronic polyarthritis. All patients had recurrent oral ulcers, with only 1 patient presenting also recurrent fever episodes, as a classical autoinflammatory feature. Next generation sequencing identified a novel heterozygous frameshift mutation (p.His577Alafs*95) that causes a premature stop codon in the zinc finger domain of A20, leading to a putative haploinsufficiency of the protein. Functional analyses confirmed the pathogenicity of the mutation. The variant was associated with decreased levels of A20 in blood cells. Accordingly, ex-vivo lipopolysaccharide (LPS)-stimulated patients’ peripheral blood mononuclear cells (PBMCs) showed higher levels of p65 NF-kB phosphorylation, as well as increased production of the proinflammatory cytokines IL-1β, IL-6 and TNF-α. Moreover, in agreement with recent observations, demonstrating a role for A20 in inhibiting STAT1 and IFNγ pathways, markedly higher circulating levels of the two IFNγ-inducible chemokines CXCL9 and CXCL10 were detected in all patients. Supporting the findings of a hyperactivation of IFNγ signaling pathway in HA20 patients, patients’ monocytes showed higher levels of STAT1 without stimulation, as well as higher phosphorylated (active) STAT1 levels following IFNγ stimulation. In conclusion, our study show that in the clinical spectrum of HA20 autoimmune features may predominate over autoinflammatory features and demonstrate, from a molecular point of view, the involvement of A20 in modulating not only the NF-kB, but also the IFNγ pathway.
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Affiliation(s)
| | - Silvia Federici
- Division of Rheumatology, Bambino Gesù Children's Hospital, IRCCS, Roma, Italy
| | - Andrea Uva
- Division of Rheumatology, Bambino Gesù Children's Hospital, IRCCS, Roma, Italy
| | - Chiara Passarelli
- Translational Cytogenomics Research Unit, Bambino Gesù Children's Hospital, IRCCS, Roma, Italy
| | - Camilla Celani
- Division of Rheumatology, Bambino Gesù Children's Hospital, IRCCS, Roma, Italy
| | - Ivan Caiello
- Laboratory of Immuno-Rheumatology, Bambino Gesù Children's Hospital, IRCCS, Roma, Italy
| | - Valentina Matteo
- Laboratory of Immuno-Rheumatology, Bambino Gesù Children's Hospital, IRCCS, Roma, Italy
| | - Stefano Petrocchi
- Translational Cytogenomics Research Unit, Bambino Gesù Children's Hospital, IRCCS, Roma, Italy
| | - Eva Piano Mortari
- Diagnostic Immunology Research Unit, Multimodal Medicine Research Area, Bambino Gesù Children's Hospital, IRCCS, Roma, Italy
| | - Fabrizio De Benedetti
- Laboratory of Immuno-Rheumatology, Bambino Gesù Children's Hospital, IRCCS, Roma, Italy.,Division of Rheumatology, Bambino Gesù Children's Hospital, IRCCS, Roma, Italy
| | - Giusi Prencipe
- Laboratory of Immuno-Rheumatology, Bambino Gesù Children's Hospital, IRCCS, Roma, Italy
| | - Antonella Insalaco
- Division of Rheumatology, Bambino Gesù Children's Hospital, IRCCS, Roma, Italy
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7
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Le T, He X, Huang J, Liu S, Bai Y, Wu K. Knockdown of long noncoding RNA GAS5 reduces vascular smooth muscle cell apoptosis by inactivating EZH2-mediated RIG-I signaling pathway in abdominal aortic aneurysm. J Transl Med 2021; 19:466. [PMID: 34781960 PMCID: PMC8594130 DOI: 10.1186/s12967-021-03023-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 08/04/2021] [Indexed: 12/03/2022] Open
Abstract
Background Abdominal aortic aneurysm (AAA), an irreversible cardiovascular disease prevalent in the artery, causes the increase of the aneurysm diameter over time, and is a fatal phenomenon inducing sidewall rupture. Long noncoding RNAs (lncRNAs) serve as promising biomarkers for AAA. In the present study, we sought to define the role of lncRNA growth-arrest-specific transcript 5 (GAS5) in growth of smooth muscle cells (SMC) and progression of AAA. Methods Initially, we established angiotensin II (Ang II)-induced AAA mouse models and Ang II-treated vascular SMC model. RT-qPCR and Western blot analysis were adopted to determine expression of GAS5 and zeste homolog 2 (EZH2). After ectopic expression and depletion experiments in Ang II-treated mice and vascular SMCs, cell apoptosis was detected in SMCs using flow cytometry and in mice using TUNEL staining. The binding of GAS5 and EZH2 was evaluated using RNA binding protein immunoprecipitation (RIP) and Co-IP assays. Results Increased GAS5 and RIG-I but decreased EZH2 were found in aortic tissues of AAA mice. EZH2 overexpression inhibited AAA formation and suppressed SMC apoptosis. Functionally, EZH2 blocked the RIG-I signaling pathway and consequently inhibited SMC apoptosis. GAS5 regulated EZH2 transcription in a negative manner in SMCs. Knockdown of GAS5 attenuated SMC apoptosis, which was reversed by EZH2 inhibition or RIG-I overexpression. Conclusions The current study demonstrated that GAS5 induced SMC apoptosis and subsequent AAA onset by activating EZH2-mediated RIG-I signaling pathway, highlighting GAS5 as a novel biomarker for AAA. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-021-03023-w.
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Affiliation(s)
- Tianming Le
- Department of General and Vascular Surgery, Xiangya Hospital, Central South University, No. 87, Xiangya Road, Kaifu District, Changsha, 410008, Hunan Province, People's Republic of China
| | - Xin He
- Department of Anesthesiology, Xiangya Hospital, Central South University, Changsha, 410008, People's Republic of China
| | - Jianhua Huang
- Department of General and Vascular Surgery, Xiangya Hospital, Central South University, No. 87, Xiangya Road, Kaifu District, Changsha, 410008, Hunan Province, People's Republic of China
| | - Shuai Liu
- Department of General and Vascular Surgery, Xiangya Hospital, Central South University, No. 87, Xiangya Road, Kaifu District, Changsha, 410008, Hunan Province, People's Republic of China
| | - Yang Bai
- Department of General and Vascular Surgery, Xiangya Hospital, Central South University, No. 87, Xiangya Road, Kaifu District, Changsha, 410008, Hunan Province, People's Republic of China
| | - Kemin Wu
- Department of General and Vascular Surgery, Xiangya Hospital, Central South University, No. 87, Xiangya Road, Kaifu District, Changsha, 410008, Hunan Province, People's Republic of China.
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8
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Breitenecker K, Homolya M, Luca AC, Lang V, Trenk C, Petroczi G, Mohrherr J, Horvath J, Moritsch S, Haas L, Kurnaeva M, Eferl R, Stoiber D, Moriggl R, Bilban M, Obenauf AC, Ferran C, Dome B, Laszlo V, Győrffy B, Dezso K, Moldvay J, Casanova E, Moll HP. Down-regulation of A20 promotes immune escape of lung adenocarcinomas. Sci Transl Med 2021; 13:eabc3911. [PMID: 34233950 PMCID: PMC7611502 DOI: 10.1126/scitranslmed.abc3911] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 02/15/2021] [Accepted: 06/02/2021] [Indexed: 12/15/2022]
Abstract
Inflammation is a well-known driver of lung tumorigenesis. One strategy by which tumor cells escape tight homeostatic control is by decreasing the expression of the potent anti-inflammatory protein tumor necrosis factor alpha-induced protein 3 (TNFAIP3), also known as A20. We observed that tumor cell intrinsic loss of A20 markedly enhanced lung tumorigenesis and was associated with reduced CD8+ T cell-mediated immune surveillance in patients with lung cancer and in mouse models. In mice, we observed that this effect was completely dependent on increased cellular sensitivity to interferon-γ (IFN-γ) signaling by aberrant activation of TANK-binding kinase 1 (TBK1) and increased downstream expression and activation of signal transducer and activator of transcription 1 (STAT1). Interrupting this autocrine feed forward loop by knocking out IFN-α/β receptor completely restored infiltration of cytotoxic T cells and rescued loss of A20 depending tumorigenesis. Downstream of STAT1, programmed death ligand 1 (PD-L1) was highly expressed in A20 knockout lung tumors. Accordingly, immune checkpoint blockade (ICB) treatment was highly efficient in mice harboring A20-deficient lung tumors. Furthermore, an A20 loss-of-function gene expression signature positively correlated with survival of melanoma patients treated with anti-programmed cell death protein 1. Together, we have identified A20 as a master immune checkpoint regulating the TBK1-STAT1-PD-L1 axis that may be exploited to improve ICB therapy in patients with lung adenocarcinoma.
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Affiliation(s)
- Kristina Breitenecker
- Institute of Pharmacology, Center of Physiology and Pharmacology, Medical University of Vienna, AT-1090 Vienna, Austria
- Institute of Cancer Research, Medical University of Vienna, AT-1090 Vienna, Austria
- Comprehensive Cancer Center (CCC), Medical University of Vienna, AT-1090 Vienna, Austria
| | - Monika Homolya
- Institute of Pharmacology, Center of Physiology and Pharmacology, Medical University of Vienna, AT-1090 Vienna, Austria
| | - Andreea C Luca
- Institute of Pharmacology, Center of Physiology and Pharmacology, Medical University of Vienna, AT-1090 Vienna, Austria
| | - Veronika Lang
- Institute of Pharmacology, Center of Physiology and Pharmacology, Medical University of Vienna, AT-1090 Vienna, Austria
| | - Christoph Trenk
- Institute of Pharmacology, Center of Physiology and Pharmacology, Medical University of Vienna, AT-1090 Vienna, Austria
| | - Georg Petroczi
- Institute of Pharmacology, Center of Physiology and Pharmacology, Medical University of Vienna, AT-1090 Vienna, Austria
| | - Julian Mohrherr
- Institute of Pharmacology, Center of Physiology and Pharmacology, Medical University of Vienna, AT-1090 Vienna, Austria
| | - Jaqueline Horvath
- Institute of Pharmacology, Center of Physiology and Pharmacology, Medical University of Vienna, AT-1090 Vienna, Austria
| | - Stefan Moritsch
- Institute of Cancer Research, Medical University of Vienna, AT-1090 Vienna, Austria
- Comprehensive Cancer Center (CCC), Medical University of Vienna, AT-1090 Vienna, Austria
| | - Lisa Haas
- Research Institute of Molecular Pathology, Vienna Biocenter, AT-1030 Vienna, Austria
| | - Margarita Kurnaeva
- Institute of Pharmacology, Center of Physiology and Pharmacology, Medical University of Vienna, AT-1090 Vienna, Austria
| | - Robert Eferl
- Institute of Cancer Research, Medical University of Vienna, AT-1090 Vienna, Austria
- Comprehensive Cancer Center (CCC), Medical University of Vienna, AT-1090 Vienna, Austria
| | - Dagmar Stoiber
- Institute of Pharmacology, Center of Physiology and Pharmacology, Medical University of Vienna, AT-1090 Vienna, Austria
- Division Pharmacology, Department of Pharmacology, Physiology and Microbiology, Karl Landsteiner University of Health Sciences, AT-3500 Krems, Austria
| | - Richard Moriggl
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine, AT-1210 Vienna, Austria
| | - Martin Bilban
- Department of Laboratory Medicine, Medical University of Vienna, AT-1090 Vienna, Austria
- Core Facilities, Medical University of Vienna, AT-1090 Vienna, Austria
| | - Anna C Obenauf
- Research Institute of Molecular Pathology, Vienna Biocenter, AT-1030 Vienna, Austria
| | - Christiane Ferran
- Division of Vascular and Endovascular Surgery and the Center for Vascular Biology Research, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
- Transplant Institute and the Division of Nephrology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Balazs Dome
- Division of Thoracic Surgery, Department of Surgery, and Comprehensive Cancer Center (CCC), Medical University of Vienna, AT-1090 Vienna, Austria
- 1st Department of Tumor Biology, National Korányi Institute of Pulmonology, Semmelweis University, HU-1121 Budapest, Hungary
- Department of Thoracic Surgery, National Institute of Oncology and Semmelweis University, HU-1122 Budapest, Hungary
| | - Viktoria Laszlo
- Division of Thoracic Surgery, Department of Surgery, and Comprehensive Cancer Center (CCC), Medical University of Vienna, AT-1090 Vienna, Austria
- 1st Department of Tumor Biology, National Korányi Institute of Pulmonology, Semmelweis University, HU-1121 Budapest, Hungary
| | - Balázs Győrffy
- MTA TTK Lendület Cancer Biomarker Research Group, Institute of Enzymology, and 2nd Department of Pediatrics, Semmelweis University, HU-1117 Budapest, Hungary
- Department of Bioinformatics, Semmelweis University, HU-1094 Budapest, Hungary
- 2nd Department of Pediatrics, Semmelweis University, HU-1094 Budapest, Hungary
| | - Katalin Dezso
- 1st Department of Pathology and Experimental Cancer Research, Semmelweis University, HU-1085 Budapest, Hungary
| | - Judit Moldvay
- 1st Department of Pulmonology, National Korányi Institute of Pulmonology, HU-1121 Budapest, Hungary
- SE-NAP Brain Metastasis Research Group, 2nd Department of Pathology, Semmelweis University, HU-1122 Budapest, Hungary
| | - Emilio Casanova
- Institute of Pharmacology, Center of Physiology and Pharmacology, Medical University of Vienna, AT-1090 Vienna, Austria
- Comprehensive Cancer Center (CCC), Medical University of Vienna, AT-1090 Vienna, Austria
| | - Herwig P Moll
- Institute of Pharmacology, Center of Physiology and Pharmacology, Medical University of Vienna, AT-1090 Vienna, Austria.
- Comprehensive Cancer Center (CCC), Medical University of Vienna, AT-1090 Vienna, Austria
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9
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Meng Z, Xu R, Xie L, Wu Y, He Q, Gao P, He X, Chen Q, Xie Q, Zhang J, Yang Q. A20/Nrdp1 interaction alters the inflammatory signaling profile by mediating K48- and K63-linked polyubiquitination of effectors MyD88 and TBK1. J Biol Chem 2021; 297:100811. [PMID: 34023381 PMCID: PMC8233150 DOI: 10.1016/j.jbc.2021.100811] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 05/10/2021] [Accepted: 05/19/2021] [Indexed: 11/16/2022] Open
Abstract
A20 is a potent anti-inflammatory protein that mediates both inflammation and ubiquitination in mammals, but the related mechanisms are not clear. In this study, we performed mass spectrometry (MS) screening, gene ontology (GO) analysis, and coimmunoprecipitation (co-IP) in a lipopolysaccharide (LPS)-induced inflammatory cell model to identify novel A20-interacting proteins. We confirmed that the E3 ubiquitin ligase Nrdp1, also known as ring finger protein 41 (RNF41), interacted with A20 in LPS-stimulated cells. Further co-IP analysis demonstrated that when A20 was knocked out, degradation-inducing K48-linked ubiquitination of inflammatory effector MyD88 was decreased, but protein interaction-mediating K63-linked ubiquitination of another inflammatory effector TBK1 was increased. Moreover, western blot experiments showed that A20 inhibition induced an increase in levels of MyD88 and phosphorylation of downstream effector proteins as well as of TBK1 and a downstream effector, while Nrdp1 inhibition induced an increase in MyD88 but a decrease in TBK1 levels. When A20 and Nrdp1 were coinhibited, no further change in MyD88 was observed, but TBK1 levels were significantly decreased compared with those upon A20 inhibition alone. Gain- and loss-of-function analyses revealed that the ZnF4 domain of A20 is required for Nrdp1 polyubiquitination. Upon LPS stimulation, the inhibition of Nrdp1 alone increased the secretion of IL-6 and TNF-α but decreased IFN-β secretion, as observed in other studies, suggesting that Nrdp1 preferentially promotes the production of IFN-β. Taken together, these results demonstrated that A20/Nrdp1 interaction is important for A20 anti-inflammation, thus revealing a novel mechanism for the anti-inflammatory effects of A20.
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Affiliation(s)
- Zhaoyou Meng
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China; Department of Neurobiology, Army Medical University (Third Military Medical University), Chongqing, China
| | - Rui Xu
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Lexing Xie
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yutong Wu
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Qian He
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Pan Gao
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Xiaohui He
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Qiong Chen
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Qi Xie
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China.
| | - Jiqiang Zhang
- Department of Neurobiology, Army Medical University (Third Military Medical University), Chongqing, China.
| | - Qingwu Yang
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China.
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10
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UFMylation inhibits the proinflammatory capacity of interferon-γ-activated macrophages. Proc Natl Acad Sci U S A 2021; 118:2011763118. [PMID: 33372156 DOI: 10.1073/pnas.2011763118] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Macrophages activated with interferon-γ (IFN-γ) in combination with other proinflammatory stimuli, such as lipopolysaccharide or tumor necrosis factor-α (TNF-α), respond with transcriptional and cellular changes that enhance clearance of intracellular pathogens at the risk of damaging tissues. IFN-γ effects must therefore be carefully balanced with inhibitory mechanisms to prevent immunopathology. We performed a genome-wide CRISPR knockout screen in a macrophage cell line to identify negative regulators of IFN-γ responses. We discovered an unexpected role of the ubiquitin-fold modifier (Ufm1) conjugation system (herein UFMylation) in inhibiting responses to IFN-γ and lipopolysaccharide. Enhanced IFN-γ activation in UFMylation-deficient cells resulted in increased transcriptional responses to IFN-γ in a manner dependent on endoplasmic reticulum stress responses involving Ern1 and Xbp1. Furthermore, UFMylation in myeloid cells is required for resistance to influenza infection in mice, indicating that this pathway modulates in vivo responses to infection. These findings provide a genetic roadmap for the regulation of responses to a key mediator of cellular immunity and identify a molecular link between the UFMylation pathway and immune responses.
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11
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Angolano C, Kaczmarek E, Essayagh S, Daniel S, Choi LY, Tung B, Sauvage G, Lee A, Kipper FC, Arvelo MB, Moll HP, Ferran C. A20/TNFAIP3 Increases ENOS Expression in an ERK5/KLF2-Dependent Manner to Support Endothelial Cell Health in the Face of Inflammation. Front Cardiovasc Med 2021; 8:651230. [PMID: 34026871 PMCID: PMC8138474 DOI: 10.3389/fcvm.2021.651230] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 03/18/2021] [Indexed: 11/13/2022] Open
Abstract
Rationale: Decreased expression and activity of endothelial nitric oxide synthase (eNOS) in response to inflammatory and metabolic insults is the hallmark of endothelial cell (EC) dysfunction that preludes the development of atherosclerosis and hypertension. We previously reported the atheroprotective properties of the ubiquitin-editing and anti-inflammatory protein A20, also known as TNFAIP3, in part through interrupting nuclear factor-kappa B (NF-κB) and interferon signaling in EC and protecting these cells from apoptosis. However, A20's effect on eNOS expression and function remains unknown. In this study, we evaluated the impact of A20 overexpression or knockdown on eNOS expression in EC, at baseline and after tumor necrosis factor (TNF) treatment, used to mimic inflammation. Methods and Results: A20 overexpression in human coronary artery EC (HCAEC) significantly increased basal eNOS mRNA (qPCR) and protein (western blot) levels and prevented their downregulation by TNF. Conversely, siRNA-induced A20 knockdown decreased eNOS mRNA levels, identifying A20 as a physiologic regulator of eNOS expression. By reporter assays, using deletion and point mutants of the human eNOS promoter, and knockdown of eNOS transcriptional regulators, we demonstrated that A20-mediated increase of eNOS was transcriptional and relied on increased expression of the transcription factor Krüppel-like factor (KLF2), and upstream of KLF2, on activation of extracellular signal-regulated kinase 5 (ERK5). Accordingly, ERK5 knockdown or inhibition significantly abrogated A20's ability to increase KLF2 and eNOS expression. In addition, A20 overexpression in HCAEC increased eNOS phosphorylation at Ser-1177, which is key for the function of this enzyme. Conclusions: This is the first report demonstrating that overexpression of A20 in EC increases eNOS transcription in an ERK5/KLF2-dependent manner and promotes eNOS activating phosphorylation. This effect withstands eNOS downregulation by TNF, preventing EC dysfunction in the face of inflammation. This novel function of A20 further qualifies its therapeutic promise to prevent/treat atherosclerosis.
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Affiliation(s)
- Cleide Angolano
- The Division of Vascular and Endovascular Surgery and the Center for Vascular Biology Research, Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
| | - Elzbieta Kaczmarek
- The Division of Vascular and Endovascular Surgery and the Center for Vascular Biology Research, Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
| | - Sanah Essayagh
- The Division of Vascular and Endovascular Surgery and the Center for Vascular Biology Research, Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
| | - Soizic Daniel
- The Division of Vascular and Endovascular Surgery and the Center for Vascular Biology Research, Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
| | - Lynn Y. Choi
- The Division of Vascular and Endovascular Surgery and the Center for Vascular Biology Research, Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
| | - Brian Tung
- The Division of Vascular and Endovascular Surgery and the Center for Vascular Biology Research, Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
| | - Gabriel Sauvage
- The Division of Vascular and Endovascular Surgery and the Center for Vascular Biology Research, Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
| | - Andy Lee
- The Division of Vascular and Endovascular Surgery and the Center for Vascular Biology Research, Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
| | - Franciele C. Kipper
- The Division of Neurosurgery and the Center for Vascular Biology Research, Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
| | - Maria B. Arvelo
- The Division of Vascular and Endovascular Surgery and the Center for Vascular Biology Research, Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
| | - Herwig P. Moll
- The Division of Vascular and Endovascular Surgery and the Center for Vascular Biology Research, Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
| | - Christiane Ferran
- The Division of Vascular and Endovascular Surgery and the Center for Vascular Biology Research, Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
- The Transplant Institute and the Division of Nephrology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
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12
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Zhu L, Yang H, Chao Y, Gu Y, Zhang J, Wang F, Yu W, Ye P, Chu P, Kong X, Chen S. Akt phosphorylation regulated by IKKε in response to low shear stress leads to endothelial inflammation via activating IRF3. Cell Signal 2020; 80:109900. [PMID: 33370582 DOI: 10.1016/j.cellsig.2020.109900] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 12/22/2020] [Accepted: 12/22/2020] [Indexed: 10/22/2022]
Abstract
Low shear stress (LSS) plays a critical role in the development of atherosclerotic plaques and vascular inflammation. Previous studies have reported Akt phosphorylation induced by LSS. However, the mechanism and role of Akt activation remains unclear in LSS-induced endothelial dysfunction. In this study, our results demonstrated the increased phosphorylation of IKKε, TBK1 and Akt in HUVECs exposed to LSS. Furthermore, IKKε silencing using small interfering RNAs significantly reduced LSS-induced Akt phosphorylation. In contrast, silencing of TBK1 or inhibition of PI3K and mTORC2 had no effect on LSS-induced Akt phosphorylation. Notably, Akt inhibition markedly diminished LSS-induced expression of ICAM-1, VCAM-1 and MCP-1, as well as LSS-induced IRF3 phosphorylation and nuclear translocation, without affecting the activation of NF-κB and STAT1. Moreover, endothelial cell specific Akt overexpression mediated by adeno-associated virus markedly increased intimal ICAM-1 and IRF3 expression at LSS area of partially ligated carotid artery in mice. In brief, our findings suggest that LSS-induced Akt phosphorylation is positively regulated by IKKε and promotes IRF3 activation, leading to endothelial inflammation.
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Affiliation(s)
- Linlin Zhu
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China.
| | - Hongfeng Yang
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China; Department of Intensive Care Unit, the Affiliated People(')s Hospital of Jiangsu University, Zhenjiang, China
| | - Yuelin Chao
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Yue Gu
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Junxia Zhang
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Feng Wang
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Wande Yu
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Peng Ye
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Peng Chu
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Xiangquan Kong
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Shaoliang Chen
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China.
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13
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Tam WY, Cheung KK. Phenotypic characteristics of commonly used inbred mouse strains. J Mol Med (Berl) 2020; 98:1215-1234. [PMID: 32712726 DOI: 10.1007/s00109-020-01953-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 07/13/2020] [Accepted: 07/16/2020] [Indexed: 12/16/2022]
Abstract
The laboratory mouse is the most commonly used mammalian model for biomedical research. An enormous number of mouse models, such as gene knockout, knockin, and overexpression transgenic mice, have been created over the years. A common practice to maintain a genetically modified mouse line is backcrossing with standard inbred mice over several generations. However, the choice of inbred mouse for backcrossing is critical to phenotypic characterization because phenotypic variabilities are often observed between mice with different genetic backgrounds. In this review, the major features of commonly used inbred mouse lines are discussed. The aim is to provide information for appropriate selection of inbred mouse lines for genetic and behavioral studies.
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Affiliation(s)
- Wing Yip Tam
- University Research Facility in Behavioral and Systems Neuroscience, The Hong Kong Polytechnic University, Hong Kong, SAR, China
| | - Kwok-Kuen Cheung
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong, SAR, China.
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14
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Fania L, Morelli M, Scarponi C, Mercurio L, Scopelliti F, Cattani C, Scaglione GL, Tonanzi T, Pilla MA, Pagnanelli G, Mazzanti C, Girolomoni G, Cavani A, Madonna S, Albanesi C. Paradoxical psoriasis induced by TNF-α blockade shows immunological features typical of the early phase of psoriasis development. JOURNAL OF PATHOLOGY CLINICAL RESEARCH 2019; 6:55-68. [PMID: 31577850 PMCID: PMC6966707 DOI: 10.1002/cjp2.147] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 09/17/2019] [Accepted: 09/19/2019] [Indexed: 12/11/2022]
Abstract
Immunomodulation with anti‐TNF‐α is highly effective in the treatment of various immune‐mediated inflammatory diseases, including hidradenitis suppurativa (HS). However, this may be responsible for unexpected paradoxical psoriasiform reactions. The pathogenic mechanisms underlying the induction of these events are not clear, even though the involvement of innate immune responses driven by plasmacytoid dendritic cells (pDC) has been described. In addition, the genetic predisposition to psoriasis of patients could be determinant. In this study, we investigated the immunological and genetic profiles of three HS patients without psoriasis who developed paradoxical psoriasiform reactions following anti‐TNF‐α therapy with adalimumab. We found that paradoxical psoriasiform skin reactions show immunological features common to the early phases of psoriasis development, characterized by cellular players of innate immunity, such as pDC, neutrophils, mast cells, macrophages, and monocytes. In addition, IFN‐β and IFN‐α2a, two type I IFNs typical of early psoriasis, were highly expressed in paradoxical skin reactions. Concomitantly, other innate immunity molecules, such as the catheledicin LL37 and lymphotoxin (LT)‐α and LT‐β were overproduced. Interestingly, these innate immunity molecules were abundantly expressed by keratinocytes, in addition to the inflammatory infiltrate. In contrast to classical psoriasis, psoriasiform lesions of HS patients showed a reduced number of IFN‐γ and TNF‐α‐releasing T lymphocytes. On the contrary, IL‐22 immunoreactivity was significantly augmented together with the IL‐36γ staining in leukocytes infiltrating the dermis. Finally, we found that all HS patients with paradoxical reactions carried allelic variants in genes predisposing to psoriasis. Among them, SNPs in ERAP1, NFKBIZ, and TNFAIP genes and in the HLA‐C genomic region were found.
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Affiliation(s)
- Luca Fania
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy
| | - Martina Morelli
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy.,Section of Dermatology, Department of Medicine, University of Verona, Verona, Italy
| | - Claudia Scarponi
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy
| | - Laura Mercurio
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy
| | - Fernanda Scopelliti
- Istituto Nazionale per la promozione della salute delle popolazioni Migranti ed il contrasto delle malattie della Povertà, INMP, Rome, Italy
| | - Caterina Cattani
- Istituto Nazionale per la promozione della salute delle popolazioni Migranti ed il contrasto delle malattie della Povertà, INMP, Rome, Italy
| | - Giovanni Luca Scaglione
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy.,Laboratory of Molecular Oncology, "Giovanni Paolo II" Foundation, Catholic University of Sacred Heart, Campobasso, Italy
| | - Tiziano Tonanzi
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy
| | - Maria Antonietta Pilla
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy
| | - Gianluca Pagnanelli
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy
| | - Cinzia Mazzanti
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy
| | - Giampiero Girolomoni
- Section of Dermatology, Department of Medicine, University of Verona, Verona, Italy
| | - Andrea Cavani
- Istituto Nazionale per la promozione della salute delle popolazioni Migranti ed il contrasto delle malattie della Povertà, INMP, Rome, Italy
| | - Stefania Madonna
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy
| | - Cristina Albanesi
- Laboratory of Experimental Immunology and 1st Dermatology Division, IDI-IRCCS, Rome, Italy
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15
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Xu M, Liu PP, Li H. Innate Immune Signaling and Its Role in Metabolic and Cardiovascular Diseases. Physiol Rev 2019; 99:893-948. [PMID: 30565509 DOI: 10.1152/physrev.00065.2017] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The innate immune system is an evolutionarily conserved system that senses and defends against infection and irritation. Innate immune signaling is a complex cascade that quickly recognizes infectious threats through multiple germline-encoded cell surface or cytoplasmic receptors and transmits signals for the deployment of proper countermeasures through adaptors, kinases, and transcription factors, resulting in the production of cytokines. As the first response of the innate immune system to pathogenic signals, inflammatory responses must be rapid and specific to establish a physical barrier against the spread of infection and must subsequently be terminated once the pathogens have been cleared. Long-lasting and low-grade chronic inflammation is a distinguishing feature of type 2 diabetes and cardiovascular diseases, which are currently major public health problems. Cardiometabolic stress-induced inflammatory responses activate innate immune signaling, which directly contributes to the development of cardiometabolic diseases. Additionally, although the innate immune elements are highly conserved in higher-order jawed vertebrates, lower-grade jawless vertebrates lack several transcription factors and inflammatory cytokine genes downstream of the Toll-like receptors (TLRs) and retinoic acid-inducible gene-I (RIG-I)-like receptors (RLRs) pathways, suggesting that innate immune signaling components may additionally function in an immune-independent way. Notably, recent studies from our group and others have revealed that innate immune signaling can function as a vital regulator of cardiometabolic homeostasis independent of its immune function. Therefore, further investigation of innate immune signaling in cardiometabolic systems may facilitate the discovery of new strategies to manage the initiation and progression of cardiometabolic disorders, leading to better treatments for these diseases. In this review, we summarize the current progress in innate immune signaling studies and the regulatory function of innate immunity in cardiometabolic diseases. Notably, we highlight the immune-independent effects of innate immune signaling components on the development of cardiometabolic disorders.
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Affiliation(s)
- Meng Xu
- Department of Cardiology, Renmin Hospital of Wuhan University , Wuhan , China ; Medical Research Center, Zhongnan Hospital of Wuhan University , Wuhan , China ; Animal Experiment Center, Wuhan University , Wuhan , China ; Division of Cardiology, Department of Medicine, University of Ottawa Heart Institute, Ottawa, Ontario , Canada
| | - Peter P Liu
- Department of Cardiology, Renmin Hospital of Wuhan University , Wuhan , China ; Medical Research Center, Zhongnan Hospital of Wuhan University , Wuhan , China ; Animal Experiment Center, Wuhan University , Wuhan , China ; Division of Cardiology, Department of Medicine, University of Ottawa Heart Institute, Ottawa, Ontario , Canada
| | - Hongliang Li
- Department of Cardiology, Renmin Hospital of Wuhan University , Wuhan , China ; Medical Research Center, Zhongnan Hospital of Wuhan University , Wuhan , China ; Animal Experiment Center, Wuhan University , Wuhan , China ; Division of Cardiology, Department of Medicine, University of Ottawa Heart Institute, Ottawa, Ontario , Canada
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16
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Yin L, Fang Z, Shen NJ, Qiu YH, Li AJ, Zhang YJ. Downregulation of A20 increases the cytotoxicity of IFN-γ in hepatocellular carcinoma cells. DRUG DESIGN DEVELOPMENT AND THERAPY 2017; 11:2841-2850. [PMID: 29033545 PMCID: PMC5628674 DOI: 10.2147/dddt.s135993] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Hepatocellular carcinoma (HCC) is a highly fatal disease mandating development of novel, effective therapeutic strategy. Interferon-gamma (IFN-γ) is a pleiotropic cytokine with immunomodulatory, antiviral, and antitumor effects. Although IFN-γ is a promising antitumor agent, its application is limited by resistance in tumor cells. A20 is a zinc-finger protein that was initially identified as a gene product induced by tumor necrosis factor α in human umbilical vein endothelial cells. In this study, we found that silencing of A20 combined with IFN-γ significantly represses cell viability, and induces apoptosis and cell-cycle arrest in HCC cells. By investigating mechanisms implicated in A20 and IFN-γ-mediated signaling pathways, we revealed that the phosphoinositide 3-kinase/Akt signaling pathway and antiapoptotic B-cell lymphoma 2 proteins were repressed. Moreover, we also found that phosphorylation of STAT1 and STAT3 was significantly enhanced after the downregulation of A20 in combination with treatment of IFN-γ. Inhibitor of STAT1 but not STAT3 could block the antitumor effect of IFN-γ. Therefore, targeting A20 enhances the cytotoxicity of IFN-γ against HCC cells and may present a promising therapeutic strategy for HCC.
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Affiliation(s)
- Lei Yin
- The Second Department of Biliary Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Zheng Fang
- The Second Department of Biliary Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Ning-Jia Shen
- The Second Department of Biliary Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Ying-He Qiu
- The Second Department of Biliary Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Ai-Jun Li
- The Second Department of Biliary Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Yong-Jie Zhang
- The Second Department of Biliary Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
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17
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A20 Haploinsufficiency Aggravates Transplant Arteriosclerosis in Mouse Vascular Allografts: Implications for Clinical Transplantation. Transplantation 2017; 100:e106-e116. [PMID: 27495763 DOI: 10.1097/tp.0000000000001407] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Inflammation is central to the pathogenesis of transplant arteriosclerosis (TA). We questioned whether physiologic levels of anti-inflammatory A20 influence TA severity. METHODS We performed major histocompatibility complex mismatched aorta to carotid artery interposition grafts, using wild type (WT) or A20 heterozygote (HET) C57BL/6 (H-2) donors and BALB/c (H-2) recipients, and conversely BALB/c donors and WT/HET recipients. We analyzed aortic allografts by histology, immunohistochemistry, immunofluorescence, and gene profiling (quantitative real-time reverse-transcriptase polymerase chain reaction). We validated select in vivo A20 targets in human and mouse smooth muscle cell (SMC) cultures. RESULTS We noted significantly greater intimal hyperplasia in HET versus WT allografts, indicating aggravated TA. Inadequate upregulation of A20 in HET allografts after transplantation was associated with excessive NF-кB activation, gauged by higher levels of IkBα, p65, VCAM-1, ICAM-1, CXCL10, CCL2, TNF, and IL-6 (mostly localized to SMC). Correspondingly, cytokine-induced upregulation of TNF and IL-6 in human and mouse SMC cultures inversely correlated with A20 expression. Aggravated TA in HET versus WT allografts correlated with increased intimal SMC proliferation, and a higher number of infiltrating IFNγ and Granzyme B CD4 T cells and natural killer cells, and lower number of FoxP3 regulatory T cells. A20 haploinsufficiency in allograft recipients did not influence TA. CONCLUSIONS A20 haploinsufficiency in vascular allografts aggravates lesions of TA by exacerbating inflammation, SMC proliferation, and infiltration of pathogenic T cells. A20 single nucleotide polymorphisms associating with lower A20 expression or function in donors of vascularized allografts may inform risk and severity of TA, highlighting the clinical implications of our findings.
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18
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Hadisaputri YE, Miyazaki T, Yokobori T, Sohda M, Sakai M, Ozawa D, Hara K, Honjo H, Kumakura Y, Kuwano H. TNFAIP3 overexpression is an independent factor for poor survival in esophageal squamous cell carcinoma. Int J Oncol 2017; 50:1002-1010. [PMID: 28197630 DOI: 10.3892/ijo.2017.3869] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 01/24/2017] [Indexed: 11/06/2022] Open
Abstract
Tumor necrosis factor α induced protein 3 (TNFAIP3) is a protein that is induced by TNF-mediated NF-κB activation and has a dual function in regulating NF-κB. TNFAIP3 is associated with inflammatory carcinogenesis in many cancer types. However, the clinical significance of TNFAIP3 expression and function in esophageal squamous cell carcinoma (ESCC) has not yet been reported. We examined 149 ESCC tissue specimens to determine the clinical significance of TNFAIP3 by immunohistochemistry. Western blot analyses were used to detect TNFAIP3 expression in TE-1, TE-8, TE-15 and KYSE-70 ESCC cells and in Het-1A, a non-cancerous esophageal cell line. TNFAIP3 protein knockdown was conducted using small-interfering RNA to investigate its impact on cell proliferation, migration and invasion. Significant correlations between TNFAIP3 expression and differentiation (P=0.04) among clinicopathological characteristics of ESCC patients were demonstrated, and high TNFAIP3 expression was associated with poor survival (P=0.02). Moreover, multivariate analysis result showed that high TNFAIP3 expression was an independent factor for poor survival (P=0.04). In vitro analysis showed high expression of TNFAIP3 protein in TE-15 cells and low expression in Het-1A cells. Furthermore, the proliferation, migration and invasion of TE-15 cells after TNFAIP3 suppression by siRNA were significantly reduced. These findings suggest that TNFAIP3 protein may be an independent prognostic marker for poor survival, and a promising target for ESCC therapy.
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Affiliation(s)
- Yuni Elsa Hadisaputri
- Department of General Surgical Science, Gunma University, Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Tatsuya Miyazaki
- Department of General Surgical Science, Gunma University, Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Takehiko Yokobori
- Department of Molecular and Cellular Pharmacology, Gunma University, Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Makoto Sohda
- Department of General Surgical Science, Gunma University, Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Makoto Sakai
- Department of General Surgical Science, Gunma University, Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Daigo Ozawa
- Department of General Surgical Science, Gunma University, Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Keigo Hara
- Department of General Surgical Science, Gunma University, Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Hiroaki Honjo
- Department of General Surgical Science, Gunma University, Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Yuji Kumakura
- Department of General Surgical Science, Gunma University, Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
| | - Hiroyuki Kuwano
- Department of General Surgical Science, Gunma University, Graduate School of Medicine, Maebashi, Gunma 371-8511, Japan
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De Wilde K, Martens A, Lambrecht S, Jacques P, Drennan MB, Debusschere K, Govindarajan S, Coudenys J, Verheugen E, Windels F, Catrysse L, Lories R, McGonagle D, Beyaert R, van Loo G, Elewaut D. A20 inhibition of STAT1 expression in myeloid cells: a novel endogenous regulatory mechanism preventing development of enthesitis. Ann Rheum Dis 2016; 76:585-592. [DOI: 10.1136/annrheumdis-2016-209454] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Revised: 06/26/2016] [Accepted: 07/11/2016] [Indexed: 12/20/2022]
Abstract
ObjectivesA20 is an important endogenous regulator of inflammation. Single nucleotide polymorphisms in A20 have been associated with various immune-mediated inflammatory diseases, and cell-specific deletion of A20 results in diverse inflammatory phenotypes. Our goal was to delineate the underlying mechanisms of joint inflammation in myeloid-specific A20-deficient mice (A20myelKO mice).MethodsInflammation in A20myelKO mice was assessed in a time-dependent manner. Western blot analysis and quantitative PCR analysis were performed on bone marrow-derived macrophages from A20myelKO and littermate control mice to study the effect of A20 on STAT1/STAT3 expression and STAT1/STAT3-dependent gene transcription in myeloid cells. The in vivo role of Janus kinase-Signal Transducer and Activator of Transcription (JAK-STAT) signalling in the development of enthesitis in A20myelKO mice was assessed following administration of a JAK inhibitor versus placebo control.ResultsEnthesitis was found to be an early inflammatory lesion in A20myelKO mice. A20 negatively modulated STAT1-dependent, but generally not STAT3-dependent gene transcription in myeloid cells by suppressing STAT1 but not STAT3 expression, both in unstimulated conditions and after interferon-γ or interleukin-6 stimulation. The increase in STAT1 gene transcription in the absence of A20 was shown to be JAK-STAT-dependent. Moreover, JAK inhibition in vivo resulted in significant reduction of enthesitis, both clinically and histopathologically.ConclusionsOur data reveal an important and novel interplay between myeloid cells and tissue resident cells at entheseal sites that is regulated by A20. In the absence of A20, STAT1 but not STAT3 expression is enhanced leading to STAT1-dependent inflammation. Therefore, A20 acts as a novel endogenous regulator of STAT1 that prevents onset of enthesitis.
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20
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Chmielewski S, Piaszyk-Borychowska A, Wesoly J, Bluyssen HAR. STAT1 and IRF8 in Vascular Inflammation and Cardiovascular Disease: Diagnostic and Therapeutic Potential. Int Rev Immunol 2015; 35:434-454. [DOI: 10.3109/08830185.2015.1087519] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Stefan Chmielewski
- Department of Human Molecular Genetics, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University, Poznan, Poland
- Department of Nephrology, Klinikum Rechts der Isar, Technical University of Munich, Munich, Germany
| | - Anna Piaszyk-Borychowska
- Department of Human Molecular Genetics, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University, Poznan, Poland
| | - Joanna Wesoly
- Laboratory of High Throughput Technologies, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University, Poznan, Poland
| | - Hans A. R. Bluyssen
- Department of Human Molecular Genetics, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University, Poznan, Poland
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Zhang XJ, Zhang P, Li H. Interferon regulatory factor signalings in cardiometabolic diseases. Hypertension 2015; 66:222-47. [PMID: 26077571 DOI: 10.1161/hypertensionaha.115.04898] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 05/14/2015] [Indexed: 12/24/2022]
Affiliation(s)
- Xiao-Jing Zhang
- From the Department of Cardiology, Renmin Hospital (X.-J.Z., P.Z., H.L.) and Cardiovascular Research Institute (X.-J.Z., P.Z., H.L.), Wuhan University, Wuhan, China; and State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, PR China (X.-J.Z.)
| | - Peng Zhang
- From the Department of Cardiology, Renmin Hospital (X.-J.Z., P.Z., H.L.) and Cardiovascular Research Institute (X.-J.Z., P.Z., H.L.), Wuhan University, Wuhan, China; and State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, PR China (X.-J.Z.)
| | - Hongliang Li
- From the Department of Cardiology, Renmin Hospital (X.-J.Z., P.Z., H.L.) and Cardiovascular Research Institute (X.-J.Z., P.Z., H.L.), Wuhan University, Wuhan, China; and State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, PR China (X.-J.Z.).
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