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Petenkova A, Auger SA, Lamb J, Quellier D, Carter C, To OT, Milosevic J, Barghout R, Kugadas A, Lu X, Geddes-McAlister J, Fichorova R, Sykes DB, Distefano MD, Gadjeva M. Prenylcysteine oxidase 1 like protein is required for neutrophil bactericidal activities. Nat Commun 2023; 14:2761. [PMID: 37179332 PMCID: PMC10182992 DOI: 10.1038/s41467-023-38447-z] [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: 07/24/2022] [Accepted: 04/29/2023] [Indexed: 05/15/2023] Open
Abstract
The bactericidal function of neutrophils is dependent on a myriad of intrinsic and extrinsic stimuli. Using systems immunology approaches we identify microbiome- and infection-induced changes in neutrophils. We focus on investigating the Prenylcysteine oxidase 1 like (Pcyox1l) protein function. Murine and human Pcyox1l proteins share ninety four percent aminoacid homology revealing significant evolutionary conservation and implicating Pcyox1l in mediating important biological functions. Here we show that the loss of Pcyox1l protein results in significant reductions in the mevalonate pathway impacting autophagy and cellular viability under homeostatic conditions. Concurrently, Pcyox1l CRISPRed-out neutrophils exhibit deficient bactericidal properties. Pcyox1l knock-out mice demonstrate significant susceptibility to infection with the gram-negative pathogen Psuedomonas aeruginosa exemplified through increased neutrophil infiltrates, hemorrhaging, and reduced bactericidal functionality. Cumulatively, we ascribe a function to Pcyox1l protein in modulation of the prenylation pathway and suggest connections beween metabolic responses and neutrophil functionality.
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Affiliation(s)
- Anastasiia Petenkova
- Department of Medicine, Division of Infectious Diseases, Mass General Brigham, Harvard Medical School, Boston, MA, 02115, USA
| | - Shelby A Auger
- Department of Chemistry, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Jeffrey Lamb
- Department of Medicine, Division of Infectious Diseases, Mass General Brigham, Harvard Medical School, Boston, MA, 02115, USA
| | - Daisy Quellier
- Department of Medicine, Division of Infectious Diseases, Mass General Brigham, Harvard Medical School, Boston, MA, 02115, USA
| | - Cody Carter
- Department of Medicine, Division of Infectious Diseases, Mass General Brigham, Harvard Medical School, Boston, MA, 02115, USA
| | - On Tak To
- Department of Medicine, Division of Infectious Diseases, Mass General Brigham, Harvard Medical School, Boston, MA, 02115, USA
| | - Jelena Milosevic
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Rana Barghout
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Abirami Kugadas
- Department of Medicine, Division of Infectious Diseases, Mass General Brigham, Harvard Medical School, Boston, MA, 02115, USA
| | - Xiaoxiao Lu
- Department of Medicine, Division of Infectious Diseases, Mass General Brigham, Harvard Medical School, Boston, MA, 02115, USA
| | | | - Raina Fichorova
- Department of Obstetrics, Gynecology, and Reproductive Biology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - David B Sykes
- Center for Regenerative Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA
| | - Mark D Distefano
- Department of Chemistry, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Mihaela Gadjeva
- Department of Medicine, Division of Infectious Diseases, Mass General Brigham, Harvard Medical School, Boston, MA, 02115, USA.
- Harvard University, Faculty of Arts and Sciences, Cambridge, MA, 02138, USA.
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2
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Burgener SS, Brügger M, Leborgne NGF, Sollberger S, Basilico P, Kaufmann T, Bird PI, Benarafa C. Granule Leakage Induces Cell-Intrinsic, Granzyme B-Mediated Apoptosis in Mast Cells. Front Cell Dev Biol 2021; 9:630166. [PMID: 34858967 PMCID: PMC8630627 DOI: 10.3389/fcell.2021.630166] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 10/14/2021] [Indexed: 11/29/2022] Open
Abstract
Mast cells are multifunctional immune cells scattered in tissues near blood vessels and mucosal surfaces where they mediate important reactions against parasites and contribute to the pathogenesis of allergic reactions. Serine proteases released from secretory granules upon mast cell activation contribute to these functions by modulating cytokine activity, platelet activation and proteolytic neutralization of toxins. The forced release of granule proteases into the cytosol of mast cells to induce cell suicide has recently been proposed as a therapeutic approach to reduce mast cell numbers in allergic diseases, but the molecular pathways involved in granule-mediated mast cell suicide are incompletely defined. To identify intrinsic granule proteases that can cause mast cell death, we used mice deficient in cytosolic serine protease inhibitors and their respective target proteases. We found that deficiency in Serpinb1a, Serpinb6a, and Serpinb9a or in their target proteases did not alter the kinetics of apoptosis induced by growth factor deprivation in vitro or the number of peritoneal mast cells in vivo. The serine protease cathepsin G induced marginal cell death upon mast cell granule permeabilization only when its inhibitors Serpinb1a or Serpinb6a were deleted. In contrast, the serine protease granzyme B was essential for driving apoptosis in mast cells. On granule permeabilization, granzyme B was required for caspase-3 processing and cell death. Moreover, cytosolic granzyme B inhibitor Serpinb9a prevented caspase-3 processing and mast cell death in a granzyme B-dependent manner. Together, our findings demonstrate that cytosolic serpins provide an inhibitory shield preventing granule protease-induced mast cell apoptosis, and that the granzyme B-Serpinb9a-caspase-3 axis is critical in mast cell survival and could be targeted in the context of allergic diseases.
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Affiliation(s)
- Sabrina Sofia Burgener
- Institute of Virology and Immunology (IVI), Mittelhäusern, Switzerland.,Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Melanie Brügger
- Institute of Virology and Immunology (IVI), Mittelhäusern, Switzerland.,Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland.,Graduate School for Cellular and Biomedical Science, University of Bern, Bern, Switzerland
| | - Nathan Georges François Leborgne
- Institute of Virology and Immunology (IVI), Mittelhäusern, Switzerland.,Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Sophia Sollberger
- Institute of Virology and Immunology (IVI), Mittelhäusern, Switzerland.,Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Paola Basilico
- Graduate School for Cellular and Biomedical Science, University of Bern, Bern, Switzerland.,Theodor Kocher Institute, Department of Preclinical Medicine, Faculty of Medicine, University of Bern, Bern, Switzerland
| | - Thomas Kaufmann
- Institute of Pharmacology, Department of Preclinical Medicine, Faculty of Medicine, University of Bern, Bern, Switzerland
| | - Phillip Ian Bird
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, Australia
| | - Charaf Benarafa
- Institute of Virology and Immunology (IVI), Mittelhäusern, Switzerland.,Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
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3
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McCormack M, Dillon E, O’Connor I, MacCarthy E. Investigation of the Initial Host Response of Naïve Atlantic Salmon ( Salmo salar) Inoculated with Paramoeba perurans. Microorganisms 2021; 9:microorganisms9040746. [PMID: 33918228 PMCID: PMC8066739 DOI: 10.3390/microorganisms9040746] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 03/23/2021] [Accepted: 03/31/2021] [Indexed: 01/15/2023] Open
Abstract
Amoebic Gill Disease (AGD), caused by the ectoparasite Paramoeba perurans is characterised by hyperplasia of the gill epithelium and lamellar fusion. In this study, the initial host response of naïve Atlantic salmon (Salmo salar) inoculated with P. perurans was investigated. Using gel-free proteomic techniques and mass spectrometry gill and serum samples were analysed at 7 timepoints (2, 3, 4, 7, 9, 11 and 14 days) post-inoculation with P. perurans. Differential expression of immune related proteins was assessed by comparison of protein expression from each time point against naïve controls. Few host immune molecules associated with innate immunity showed increased expression in response to gill colonisation by amoebae. Furthermore, many proteins with roles in immune signalling, phagocytosis and T-cell proliferation were found to be inhibited upon disease progression. Initially, various immune factors demonstrated the anticipated increase in expression in response to infection in the serum while some immune inhibition became apparent at the later stages of disease progression. Taken together, the pro-immune trend observed in serum, the lack of a robust early immune response in the gill and the diversity of those proteins in the gill whose altered expression negatively impact the immune response, support the concept of a pathogen-derived suppression of the host response.
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Affiliation(s)
- Michelle McCormack
- Marine and Freshwater Research Centre, Galway Mayo Institute of Technology, Dublin Road, H91 TRNW Galway, Ireland; (I.O.); (E.M.)
- Correspondence:
| | - Eugene Dillon
- Conway Institute of Biomolecular & Biomedical Research, University College Dublin, D04 V1W8 Dublin, Ireland;
| | - Ian O’Connor
- Marine and Freshwater Research Centre, Galway Mayo Institute of Technology, Dublin Road, H91 TRNW Galway, Ireland; (I.O.); (E.M.)
| | - Eugene MacCarthy
- Marine and Freshwater Research Centre, Galway Mayo Institute of Technology, Dublin Road, H91 TRNW Galway, Ireland; (I.O.); (E.M.)
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Leborgne NGF, Taddeo A, Freigang S, Benarafa C. Serpinb1a Is Dispensable for the Development and Cytokine Response of Invariant Natural Killer T Cell Subsets. Front Immunol 2020; 11:562587. [PMID: 33262755 PMCID: PMC7686238 DOI: 10.3389/fimmu.2020.562587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 10/13/2020] [Indexed: 11/16/2022] Open
Abstract
Invariant natural killer T (iNKT) cells are innate-like T lymphocytes. They quickly respond to antigenic stimulation by producing copious amounts of cytokines and chemokines. iNKT precursors differentiate into three subsets iNKT1, iNKT2, and iNKT17 with specific cytokine production signatures. While key transcription factors drive subset differentiation, factors that regulate iNKT subset homeostasis remain incompletely defined. Transcriptomic analyses of thymic iNKT subsets indicate that Serpinb1a is one of the most specific transcripts for iNKT17 cells suggesting that iNKT cell maintenance and function may be regulated by Serpinb1a. Serpinb1a is a major survival factor in neutrophils and prevents cell death in a cell-autonomous manner. It also controls inflammation in models of bacterial and viral infection as well as in LPS-driven inflammation. Here, we examined the iNKT subsets in neutropenic Serpinb1a−/− mice as well as in Serpinb1a−/− mice with normal neutrophil counts due to transgenic re-expression of SERPINB1 in neutrophils. In steady state, we found no significant effect of Serpinb1a-deficiency on the proliferation and numbers of iNKT subsets in thymus, lymph nodes, lung, liver and spleen. Following systemic activation with α-galactosylceramide, the prototypic glycolipid agonist of iNKT cells, we observed similar serum levels of IFN-γ and IL-4 between genotypes. Moreover, splenic dendritic cells showed normal upregulation of maturation markers following iNKT cell activation with α-galactosylceramide. Finally, lung instillation of α-galactosylceramide induced a similar recruitment of neutrophils and production of iNKT-derived cytokines IL-17, IFN-γ, and IL-4 in wild-type and Serpinb1a−/− mice. Taken together, our results indicate that Serpinb1a, while dominantly expressed in iNKT17 cells, is not essential for iNKT cell homeostasis, subset differentiation and cytokine release.
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Affiliation(s)
- Nathan G F Leborgne
- Institute of Virology and Immunology, Mittelhäusern, Switzerland.,Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland.,Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Adriano Taddeo
- Institute of Virology and Immunology, Mittelhäusern, Switzerland.,Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Stefan Freigang
- Institute of Pathology, University of Bern, Bern, Switzerland
| | - Charaf Benarafa
- Institute of Virology and Immunology, Mittelhäusern, Switzerland.,Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Bern, Switzerland
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5
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Demaurex N, Saul S. The role of STIM proteins in neutrophil functions. J Physiol 2018; 596:2699-2708. [PMID: 29441588 PMCID: PMC6046061 DOI: 10.1113/jp275639] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 01/15/2018] [Indexed: 01/07/2023] Open
Abstract
Stromal interaction molecule (STIM) proteins regulate store-operated Ca2+ entry (SOCE) in innate and adaptive immune cells and participate in the Ca2+ signals that control the functions of neutrophils, the first line of host defence against bacterial and fungal infections. Loss-of-function experiments in animal and cellular models indicate that both STIM1 and STIM2 regulate neutrophil functions, but the complexity of the SOCE machinery and the versatility of neutrophils complicate the evaluation of the results. This review aims to summarize the latest progress in the field, with special attention to the details of the experimental designs. Future study design should aim to improve the standardization of experimental procedures and to provide a more holistic understanding of the role of STIM proteins in neutrophils function.
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Affiliation(s)
- Nicolas Demaurex
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, 1211, Switzerland
| | - Stephanie Saul
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, 1211, Switzerland
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Role of granule proteases in the life and death of neutrophils. Biochem Biophys Res Commun 2017; 482:473-481. [PMID: 28212734 DOI: 10.1016/j.bbrc.2016.11.086] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 11/08/2016] [Accepted: 11/15/2016] [Indexed: 02/07/2023]
Abstract
Neutrophils constitute a crucial component of the innate immune defenses against microbes. Produced in the bone marrow and patrolling in blood vessels, neutrophils are recruited to injured tissues and are immediately active to contain pathogen invasion. Neutrophils undergo programmed cell death by multiple, context-specific pathways, which have consequences on immunopathology and disease outcome. Studies in the last decade indicate additional functions for neutrophils - or a subset of neutrophils - in modulating adaptive responses and tumor progression. Neutrophil granules contain abundant amounts of various proteases, which are directly implicated in protective and pathogenic functions of neutrophils. It now emerges that neutral serine proteases such as cathepsin G and proteinase-3 also contribute to the neutrophil life cycle, but do so via different pathways than that of the aspartate protease cathepsin D and that of mutants of the serine protease elastase. The aim of this review is to appraise the present knowledge of the function of neutrophil granule proteases and their inhibitors in neutrophil cell death, and to integrate these findings in the current understandings of neutrophil life cycle and programmed cell death pathways.
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The hidden side of SERPINB1/Leukocyte Elastase Inhibitor. Semin Cell Dev Biol 2016; 62:178-186. [PMID: 27422329 DOI: 10.1016/j.semcdb.2016.07.010] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 06/13/2016] [Accepted: 07/08/2016] [Indexed: 12/20/2022]
Abstract
SERPINB1, also called Leukocyte Elastase Inhibitor (LEI) is a member of the clade B of SERPINS. It is an intracellular protein and acts primarily to protect the cell from proteases released into the cytoplasm during stress. Its role in inflammation is clear due to its involvement in the resolution of chronic inflammatory lung and bowel diseases. LEI/SERPINB1 intrinsically possesses two enzymatic activities: an antiprotease activity dependent on its reactive site loop, which is analogous to the other proteins of the family and an endonuclease activity which is unveiled by the cleavage of the reactive site loop. The conformational change induced by this cleavage also unveils a bipartite nuclear localization signal allowing the protein to translocate to the nucleus. Recent data indicate that it has also a role in cell migration suggesting that it could be involved in diverse processes like wound healing and malignant metastases.
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