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Longé C, Bratti M, Kurowska M, Vibhushan S, David P, Desmeure V, Huang JD, Fischer A, de Saint Basile G, Sepulveda FE, Blank U, Ménasché G. Rab44 regulates murine mast cell-driven anaphylaxis through kinesin-1-dependent secretory granule translocation. J Allergy Clin Immunol 2022; 150:676-689. [PMID: 35469841 DOI: 10.1016/j.jaci.2022.04.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 03/15/2022] [Accepted: 04/08/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND Mast cells (MCs) are key effectors of the allergic response. Following the cross-linking of IgE receptors (FcεRIs), they release crucial inflammatory mediators through degranulation. Although degranulation depends critically on secretory granule (SG) trafficking towards the plasma membrane, the molecular machinery underlying this transport has not been fully characterized. OBJECTIVE Here, we analyzed the function of Rab44, a large atypical Rab GTPase highly expressed in MC, in MC degranulation process. METHODS Murine KO mouse models (KORab44 and DKOKif5b/Rab44) were used to perform passive cutaneous anaphylaxis (PCA) experiments and analyze granule translocation in derived bone-marrow-derived MCs (BMMCs) during degranulation. RESULTS We demonstrate that mice lacking Rab44 (KORab44) in their BMMCs are impaired in their ability to translocate and degranulate SGs at the plasma membrane upon FcεRI stimulation. Accordingly, KORab44 mice were less sensitive to IgE-mediated passive cutaneous anaphylaxis in vivo. A lack of Rab44 did not impair early FcεRI-stimulated signaling pathways, microtubule reorganization, lipid mediator or cytokine secretion. Mechanistically, Rab44 appears to interact with and function as part of the previously described kinesin-1-dependent transport pathway. CONCLUSIONS Our results highlight a novel role of Rab44 as a regulator of SG transport during degranulation and anaphylaxis acting through the kinesin-1-dependent microtubule transport machinery. Rab44 can thus be considered as a potential target for modulating MC degranulation and inhibiting IgE-mediated allergic reactions.
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Affiliation(s)
- Cyril Longé
- Université Paris Cité, Imagine Institute, Laboratory of Molecular basis of altered immune homeostasis, INSERM UMR1163, F-75015 Paris France
| | - Manuela Bratti
- Université Paris Cité, Centre de Recherche sur l'Inflammation, INSERM UMR1149, CNRS EMR8252, Faculté de Médecine site Bichat, Paris, France; Laboratoire d'Excellence Inflamex, F-75018, Paris, France
| | - Mathieu Kurowska
- Université Paris Cité, Imagine Institute, Laboratory of Molecular basis of altered immune homeostasis, INSERM UMR1163, F-75015 Paris France
| | - Shamila Vibhushan
- Université Paris Cité, Centre de Recherche sur l'Inflammation, INSERM UMR1149, CNRS EMR8252, Faculté de Médecine site Bichat, Paris, France; Laboratoire d'Excellence Inflamex, F-75018, Paris, France
| | - Pierre David
- Transgenesis Facility, Laboratoire d'Expérimentation Animale et Transgénèse (LEAT), Imagine Institute, Structure Fédérative de Recherche Necker INSERM US24/CNRS UMS3633, F-75015, Paris, France
| | - Valère Desmeure
- Université Paris Cité, Imagine Institute, Laboratory of Molecular basis of altered immune homeostasis, INSERM UMR1163, F-75015 Paris France
| | - Jian-Dong Huang
- School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Alain Fischer
- Université Paris Cité, Imagine Institute, Laboratory of Molecular basis of altered immune homeostasis, INSERM UMR1163, F-75015 Paris France; Immunology and Pediatric Hematology Department, Necker Children's Hospital, AP-HP, F-75015 Paris, France; Collège de France, F-75005 Paris, France
| | - Geneviève de Saint Basile
- Université Paris Cité, Imagine Institute, Laboratory of Molecular basis of altered immune homeostasis, INSERM UMR1163, F-75015 Paris France; Centre d'Etude des Déficits Immunitaires, AP-HP, Hôpital Necker-Enfants Malades, F-75015, Paris, France
| | - Fernando E Sepulveda
- Université Paris Cité, Imagine Institute, Laboratory of Molecular basis of altered immune homeostasis, INSERM UMR1163, F-75015 Paris France; Centre National de la Recherche Scientifique, F-75015, Paris. France
| | - Ulrich Blank
- Université Paris Cité, Centre de Recherche sur l'Inflammation, INSERM UMR1149, CNRS EMR8252, Faculté de Médecine site Bichat, Paris, France; Laboratoire d'Excellence Inflamex, F-75018, Paris, France
| | - Gaël Ménasché
- Université Paris Cité, Imagine Institute, Laboratory of Molecular basis of altered immune homeostasis, INSERM UMR1163, F-75015 Paris France
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Borelli V, Martinelli M, Luppi S, Vita F, Romano F, Fanfani F, Trevisan E, Celsi F, Zabucchi G, Zanconati F, Bottin C, Ricci G. Mast Cells in Peritoneal Fluid From Women With Endometriosis and Their Possible Role in Modulating Sperm Function. Front Physiol 2020; 10:1543. [PMID: 31998139 PMCID: PMC6964357 DOI: 10.3389/fphys.2019.01543] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 12/05/2019] [Indexed: 12/27/2022] Open
Abstract
Endometriosis is a local pelvic inflammatory process, frequently associated with infertility, with altered function of immune-related cells in the peritoneal environment. Mast cells are known to be key players of the immune system and have been recently involved in endometriosis and in infertility, with their mediators directly suppressing sperm motility. In this study, we evaluated the mast cell population and their mediators in the peritoneal fluid of infertile patients with endometriosis and their impact on human sperm motility. Peritoneal fluids, collected by laparoscopy from 11 infertile patients with endometriosis and 9 fertile controls were evaluated for the presence of mast cells, tryptase levels and their effect on sperm motility. Furthermore, an in vitro model of mast cells-sperm interaction in peritoneal fluid was set up, using LAD2 cell line as a mast cell model, and analyzed from a functional as well as a morphological point of view. Mast cell peritoneal fluid population and its main mediator, tryptase, is more represented in endometriosis confirming an involvement of these cells in this disease. Anyway it appears unlikely that tryptase enriched peritoneal fluid, which fails to inhibit sperm motility, could contribute to endometriosis associated infertility. Despite of this, sperm interaction with the mast cell surface (LAD2) induced a significantly mast cell-degranulation response in the peritoneal fluid from endometriosis which could directly modulate sperm function other than motility. This evidence lead us to suppose that there is, between these elements, an interrelationship which deserves further studies.
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Affiliation(s)
- Violetta Borelli
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Monica Martinelli
- Institute for Maternal and Child Health IRCCS "Burlo Garofolo", Trieste, Italy
| | - Stefania Luppi
- Institute for Maternal and Child Health IRCCS "Burlo Garofolo", Trieste, Italy
| | - Francesca Vita
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Federico Romano
- Institute for Maternal and Child Health IRCCS "Burlo Garofolo", Trieste, Italy
| | - Francesco Fanfani
- UOC di Ginecologia Oncologica, Dipartimento Scienze della Salute della Donna e del Bambino, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Elisa Trevisan
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Fulvio Celsi
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | | | - Fabrizio Zanconati
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Trieste, Italy
| | - Cristina Bottin
- Department of Medicine, Surgery and Health Sciences, University of Trieste, Trieste, Italy
| | - Giuseppe Ricci
- Institute for Maternal and Child Health IRCCS "Burlo Garofolo", Trieste, Italy.,Department of Medicine, Surgery and Health Sciences, University of Trieste, Trieste, Italy
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Proteomic Analysis of Lipid Rafts from RBL-2H3 Mast Cells. Int J Mol Sci 2019; 20:ijms20163904. [PMID: 31405203 PMCID: PMC6720779 DOI: 10.3390/ijms20163904] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 08/01/2019] [Accepted: 08/08/2019] [Indexed: 12/15/2022] Open
Abstract
Lipid rafts are highly ordered membrane microdomains enriched in cholesterol, glycosphingolipids, and certain proteins. They are involved in the regulation of cellular processes in diverse cell types, including mast cells (MCs). The MC lipid raft protein composition was assessed using qualitative mass spectrometric characterization of the proteome from detergent-resistant membrane fractions from RBL-2H3 MCs. Using two different post-isolation treatment methods, a total of 949 lipid raft associated proteins were identified. The majority of these MC lipid raft proteins had already been described in the RaftProtV2 database and are among highest cited/experimentally validated lipid raft proteins. Additionally, more than half of the identified proteins had lipid modifications and/or transmembrane domains. Classification of identified proteins into functional categories showed that the proteins were associated with cellular membrane compartments, and with some biological and molecular functions, such as regulation, localization, binding, catalytic activity, and response to stimulus. Furthermore, functional enrichment analysis demonstrated an intimate involvement of identified proteins with various aspects of MC biological processes, especially those related to regulated secretion, organization/stabilization of macromolecules complexes, and signal transduction. This study represents the first comprehensive proteomic profile of MC lipid rafts and provides additional information to elucidate immunoregulatory functions coordinated by raft proteins in MCs.
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Gschwandtner M, Paulitschke V, Mildner M, Brunner PM, Hacker S, Eisenwort G, Sperr WR, Valent P, Gerner C, Tschachler E. Proteome analysis identifies L1CAM/CD171 and DPP4/CD26 as novel markers of human skin mast cells. Allergy 2017; 72:85-97. [PMID: 27091730 DOI: 10.1111/all.12919] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2016] [Indexed: 01/01/2023]
Abstract
BACKGROUND The function of skin mast cells has been well documented in IgE-mediated allergic reactions, whereas other mast cell functions are poorly defined. This study aimed at identifying novel mast cell proteins by proteome analysis of primary human skin mast cells. METHODS The proteome of skin mast cells was compared to other cell types and analyzed using bioinformatics. The expression and function of two proteins hitherto not described in skin mast cells was investigated in isolated mast cells as well as in mast cells in situ. RESULTS Within the mast cell proteome, we identified 49 highly expressed proteins previously not described in mast cells; 21 of these proteins were found to be selectively expressed in mast cells. Two proteins, the neural cell adhesion molecule L1 and dipeptidyl peptidase 4, were further studied. L1 was found to be highly expressed in mast cells in normal, psoriasis, and mastocytosis skin. Dipeptidyl peptidase 4 was found to be expressed in mast cells in normal, psoriasis, and mastocytosis skin as well as in bone marrow mast cells in patients with systemic mastocytosis. In normal skin, mast cells were identified as a major source of dipeptidyl peptidase 4 and we also found that skin mast cells and fibroblasts secrete an active form of this enzyme. CONCLUSIONS In a systematic proteomics approach we identified two novel mast cell proteins potentially relevant to skin homeostasis: neural cell adhesion molecule L1 and dipeptidyl peptidase 4.
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Affiliation(s)
- M. Gschwandtner
- Research Division of Biology and Pathobiology of the Skin; Department of Dermatology; Medical University of Vienna; Vienna Austria
| | - V. Paulitschke
- Department of Dermatology; Medical University of Vienna; Vienna Austria
| | - M. Mildner
- Research Division of Biology and Pathobiology of the Skin; Department of Dermatology; Medical University of Vienna; Vienna Austria
| | - P. M. Brunner
- Department of Dermatology; Medical University of Vienna; Vienna Austria
| | - S. Hacker
- Department of Plastic and Reconstructive Surgery; Medical University of Vienna; Vienna Austria
| | - G. Eisenwort
- Department of Internal Medicine I; Division of Hematology and Hemostaseology; Medical University of Vienna; Vienna Austria
- Ludwig Boltzmann Cluster Oncology; Medical University of Vienna; Vienna Austria
| | - W. R. Sperr
- Department of Internal Medicine I; Division of Hematology and Hemostaseology; Medical University of Vienna; Vienna Austria
- Ludwig Boltzmann Cluster Oncology; Medical University of Vienna; Vienna Austria
| | - P. Valent
- Department of Internal Medicine I; Division of Hematology and Hemostaseology; Medical University of Vienna; Vienna Austria
- Ludwig Boltzmann Cluster Oncology; Medical University of Vienna; Vienna Austria
| | - C. Gerner
- Institute of Analytical Chemistry; Faculty of Chemistry; University of Vienna; Vienna Austria
- Institute of Cancer Research; Comprehensive Cancer Center; Medical University of Vienna; Vienna Austria
| | - E. Tschachler
- Research Division of Biology and Pathobiology of the Skin; Department of Dermatology; Medical University of Vienna; Vienna Austria
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Howes JM, Richardson VR, Smith KA, Schroeder V, Somani R, Shore A, Hess K, Ajjan R, Pease RJ, Keen JN, Standeven KF, Carter AM. Complement C3 is a novel plasma clot component with anti-fibrinolytic properties. Diab Vasc Dis Res 2012; 9:216-25. [PMID: 22253322 DOI: 10.1177/1479164111432788] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND AND METHOD Increased plasma clot density and prolonged lysis times are associated with cardiovascular disease. In this study, we employed a functional proteomics approach to identify novel clot components which may influence clot phenotypes. RESULTS Analysis of perfused, solubilised plasma clots identified inflammatory proteins, including complement C3, as novel clot components. Analysis of paired plasma and serum samples confirmed concentration-dependent incorporation of C3 into clots. Surface plasmon resonance indicated high-affinity binding interactions between C3 and fibrinogen and fibrin. Turbidimetric clotting and lysis assays indicated C3 impaired fibrinolysis in a concentration-dependent manner, both in vitro and ex vivo. CONCLUSION These data indicate functional interactions between complement C3 and fibrin leading to prolonged fibrinolysis. These interactions are physiologically relevant in the context of protection following injury and suggest a mechanistic link between increased plasma C3 concentration and acute cardiovascular thrombotic events.
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Affiliation(s)
- Joanna-Marie Howes
- Division of Cardiovascular & Diabetes Research, Leeds Institute of Genetics Health & Therapeutics, University of Leeds, UK
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Rao W, Isaac RE, Keen JN. An analysis of the Caenorhabditis elegans lipid raft proteome using geLC-MS/MS. J Proteomics 2010; 74:242-53. [PMID: 21070894 DOI: 10.1016/j.jprot.2010.11.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2010] [Revised: 10/20/2010] [Accepted: 11/02/2010] [Indexed: 11/16/2022]
Abstract
Lipid rafts are microdomains of the phospholipid bilayer, proposed to form semi-stable "islands" that act as a platform for several important cellular processes; major classes of raft-resident proteins include signalling proteins and glycosylphosphatidylinositol (GPI)-anchored proteins. Proteomic studies into lipid rafts have been mainly carried out in mammalian cell lines and single cell organisms. The nematode Caenorhabditis elegans, the model organism with a well-defined developmental profile, is ideally suited for the study of this subcellular locale in a complex developmental context. A study of the lipid raft proteome of C. elegans is presented here. A total of 44 proteins were identified from the lipid raft fraction using geLC-MS/MS, of which 40 have been determined to be likely raft proteins after analysis of predicted functions. Prediction of GPI-anchoring of the proteins found 21 to be potentially modified in this way, two of which were experimentally confirmed to be GPI-anchored. This work is the first reported study of the lipid raft proteome in C. elegans. The results show that raft proteins, including numerous GPI-anchored proteins, may have a variety of potentially important roles within the nematode, and will hopefully lead to C. elegans becoming a useful model for the study of lipid rafts.
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Affiliation(s)
- Wei Rao
- Institute of Integrative and Comparative Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom
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