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Carla Guarino, Seren S, Lemoine R, Hummel A, Margotin JE, El-Benna J, Hoarau C, Specks U, Jenne D, Korkmaz B. Constitutive and induced forms of membrane-bound proteinase 3 interact with antineutrophil cytoplasmic antibodies and promote immune activation of neutrophils. J Biol Chem 2023; 299:103072. [PMID: 36849007 PMCID: PMC10124916 DOI: 10.1016/j.jbc.2023.103072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 02/21/2023] [Accepted: 02/23/2023] [Indexed: 02/27/2023] Open
Abstract
Proteinase 3 (PR3) is the main target antigen of anti-neutrophil cytoplasmic antibodies (ANCA) in PR3-ANCA-associated vasculitis. A small fraction of PR3 is constitutively exposed on the surface of quiescent blood neutrophils in a proteolytically inactive form. When activated, neutrophils expose an induced form of membrane-bound PR3 (PR3mb) on their surface as well, which is enzymatically less active than unbound PR3 in solution due to its altered conformation. In this work, our objective was to understand the respective role of constitutive and induced PR3mb in the immune activation of neutrophils triggered by murine anti-PR3 mAbs and human PR3-ANCA. We quantified immune activation of neutrophils by the measurement of the production of superoxide anions and secreted protease activity in the cell supernatant before and after treatment of the cells by alpha-1 protease inhibitor (α1PI) that clears induced PR3mb from the cell surface. Incubation of TNFα-primed neutrophils with anti-PR3 antibodies resulted in a significant increase in superoxide anion production, membrane activation marker exposition, and secreted protease activity. When primed neutrophils were first treated with α1PI, we observed a partial reduction in antibody-induced neutrophil activation, suggesting that constitutive PR3mb is sufficient to activate neutrophils. The pre-treatment of primed neutrophils with purified antigen-binding fragments used as competitor significantly reduced cell activation by whole antibodies. This led us to the conclusion that PR3mb promoted immune activation of neutrophils. We propose that blocking and/or elimination of PR3mb offers a new therapeutic strategy to attenuate neutrophil activation in patients with PR3-ANCA-associated vasculitis.
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Affiliation(s)
- Carla Guarino
- INSERM UMR-1100, "Research Center for Respiratory Diseases" and University of Tours, F-37032, Tours, France
| | - Seda Seren
- INSERM UMR-1100, "Research Center for Respiratory Diseases" and University of Tours, F-37032, Tours, France
| | - Roxane Lemoine
- EA4245 "Transplantation, Immunology and Inflammation", University of Tours, France and Clinical immunology and allergology Service, Tours University Hospital, F-37032, Tours, France
| | - AmberM Hummel
- Thoracic Diseases Research Unit, Division of Pulmonary and Critical Care Medicine, Mayo Clinic and Foundation, Rochester, MN 55905, USA
| | - Jean-Edouard Margotin
- INSERM UMR-1100, "Research Center for Respiratory Diseases" and University of Tours, F-37032, Tours, France
| | - Jamel El-Benna
- Université de Paris, INSERM-U1149, CNRS-ERL8252, Centre de Recherche sur l'Inflammation (CRI), Laboratoire d'Excellence Inflamex, Faculté de Médecine Xavier Bichat, F-75018, Paris, France
| | - Cyrille Hoarau
- EA4245 "Transplantation, Immunology and Inflammation", University of Tours, France and Clinical immunology and allergology Service, Tours University Hospital, F-37032, Tours, France
| | - Ulrich Specks
- Thoracic Diseases Research Unit, Division of Pulmonary and Critical Care Medicine, Mayo Clinic and Foundation, Rochester, MN 55905, USA
| | - DieterE Jenne
- Comprehensive Pneumology Center, Institute of Lung Biology and Disease, German Center for Lung Research (DZL), 81377 Munich and Max Planck Institute of Neurobiology, 82152 Planegg-Martinsried, Germany
| | - Brice Korkmaz
- INSERM UMR-1100, "Research Center for Respiratory Diseases" and University of Tours, F-37032, Tours, France.
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Lopatko Fagerström I, Ståhl AL, Mossberg M, Tati R, Kristoffersson AC, Kahn R, Bascands JL, Klein J, Schanstra JP, Segelmark M, Karpman D. Blockade of the kallikrein-kinin system reduces endothelial complement activation in vascular inflammation. EBioMedicine 2019; 47:319-328. [PMID: 31444145 PMCID: PMC6796560 DOI: 10.1016/j.ebiom.2019.08.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 08/05/2019] [Accepted: 08/08/2019] [Indexed: 02/06/2023] Open
Abstract
Background The complement and kallikrein-kinin systems (KKS) are activated during vascular inflammation. The aim of this study was to investigate if blockade of the KKS can affect complement activation on the endothelium during inflammation. Methods Complement deposition on endothelial microvesicles was assayed in vasculitis patient plasma samples and controls. Plasma was perfused over glomerular endothelial cells and complement deposition assayed by flow cytometry. The effect of the kinin system was assessed using kinin receptor antagonists and C1-inhibitor. The in vivo effect was assessed in kidney sections from mice with nephrotoxic serum-induced glomerulonephritis treated with a kinin receptor antagonist. Findings Vasculitis patient plasma had significantly more C3- and C9-positive endothelial microvesicles than controls. Perfusion of patient acute-phase plasma samples over glomerular endothelial cells induced the release of significantly more complement-positive microvesicles, in comparison to remission or control plasma. Complement activation on endothelial microvesicles was reduced by kinin B1- and B2-receptor antagonists or by C1-inhibitor (the main inhibitor of the classical pathway and the KKS). Likewise, perfusion of glomerular endothelial cells with C1-inhibitor-depleted plasma induced the release of complement-positive microvesicles, which was significantly reduced by kinin-receptor antagonists or C1-inhibitor. Mice with nephrotoxic serum-induced glomerulonephritis exhibited significantly reduced glomerular C3 deposition when treated with a B1-receptor antagonist. Interpretation Excessive complement deposition on the endothelium will promote endothelial injury and the release of endothelial microvesicles. This study demonstrates that blockade of the KKS can reduce complement activation and thereby the inflammatory response on the endothelium. Funding Full details are provided in the Acknowledgements/Funding section.
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Affiliation(s)
| | - Anne-Lie Ståhl
- Department of Pediatrics, Clinical Sciences Lund, Lund University, Lund, Sweden
| | - Maria Mossberg
- Department of Pediatrics, Clinical Sciences Lund, Lund University, Lund, Sweden
| | - Ramesh Tati
- Department of Pediatrics, Clinical Sciences Lund, Lund University, Lund, Sweden
| | | | - Robin Kahn
- Department of Pediatrics, Clinical Sciences Lund, Lund University, Lund, Sweden; Wallenberg Center for Molecular Medicine, Lund University, Lund, Sweden
| | - Jean-Loup Bascands
- Institut National de la Sante et de la Recherche Medicale (INSERM), U1188, Université de La Réunion, France
| | - Julie Klein
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1048, Institute of Cardiovascular and Metabolic Disease, Toulouse, France; Université Toulouse III Paul Sabatier, Toulouse, France
| | - Joost P Schanstra
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1048, Institute of Cardiovascular and Metabolic Disease, Toulouse, France; Université Toulouse III Paul Sabatier, Toulouse, France
| | - Mårten Segelmark
- Department of Nephrology, Clinical Sciences Lund, Lund University, Lund, Sweden; Department of Medical and Health Sciences, Linköping University, Linköping, Sweden
| | - Diana Karpman
- Department of Pediatrics, Clinical Sciences Lund, Lund University, Lund, Sweden.
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Abstract
Involvement of the kidneys by lupus nephritis (LN) is one of the most severe
clinical manifestations seen in individuals with systemic lupus erythematosus
(SLE). LN is more frequent and severe in pediatric patients and has been
associated with higher morbidity and mortality rates. This narrative review
aimed to describe the general aspects of LN and its particularities when
affecting children and adolescents, while focusing on the disease's
etiopathogenesis, clinical manifestations, renal tissue alterations, and
treatment options.
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Affiliation(s)
- Sergio Veloso Brant Pinheiro
- Universidade Federal de Minas Gerais, Hospital das Clínicas, Unidade de Nefrologia Pediátrica, Belo Horizonte, MG, Brasil
| | - Raphael Figuiredo Dias
- Universidade Federal de Minas Gerais, Hospital das Clínicas, Unidade de Nefrologia Pediátrica, Belo Horizonte, MG, Brasil
| | | | - Stanley de Almeida Araujo
- Universidade Federal de Minas Gerais, Hospital das Clínicas, Unidade de Nefrologia Pediátrica, Belo Horizonte, MG, Brasil
| | - Ana Cristina Simões E Silva
- Universidade Federal de Minas Gerais, Hospital das Clínicas, Unidade de Nefrologia Pediátrica, Belo Horizonte, MG, Brasil
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Korkmaz B, Caughey GH, Chapple I, Gauthier F, Hirschfeld J, Jenne DE, Kettritz R, Lalmanach G, Lamort AS, Lauritzen C, Łȩgowska M, Lesner A, Marchand-Adam S, McKaig SJ, Moss C, Pedersen J, Roberts H, Schreiber A, Seren S, Thakker NS. Therapeutic targeting of cathepsin C: from pathophysiology to treatment. Pharmacol Ther 2018; 190:202-236. [DOI: 10.1016/j.pharmthera.2018.05.011] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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