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Salcman B, Bahri R, West PW, Tontini C, Affleck K, Bulfone-Paus S. P2X7 Receptor-Induced Human Mast Cell Degranulation Is Enhanced by Interleukin 33. Int J Mol Sci 2024; 25:1730. [PMID: 38339008 PMCID: PMC10855801 DOI: 10.3390/ijms25031730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/18/2024] [Accepted: 01/25/2024] [Indexed: 02/12/2024] Open
Abstract
MCs are tissue-resident immune cells that strategically reside in barrier organs and respond effectively to a wide range of stimuli, such as IL-33, a mediator released upon epithelial damage. Adenosine triphosphate (ATP) accumulates at sites of tissue injury and is known to modulate MC activities. This study investigated how an inflammatory tissue environment rich in IL-33 modulates the ATP-mediated activation of MCs. Human primary MCs primed with IL-33 displayed a strongly increased response to ATP but not ADP. This resulted in increased degranulation, IL-8 release, and pERK1/2 signalling. Such effects are unique to IL-33 stimulation and not shared by the epithelial alarmin, TSLP. MC exposure to IL-33 also increased membrane expression of purinergic and ATP-binding P2X receptors. The use of selective P2X receptor inhibitors identified P2X7 receptor as the key mediator of the enhanced ATP-induced ERK1/2 signalling and degranulation in IL-33-primed MCs. Whilst the inhibition of P2X1 and P2X4 receptors had no effect on MC degranulation, inhibiting these receptors together with P2X7 resulted in further decreased MC-mediated degranulation. These data therefore point toward the potential mechanisms by which IL-33 contributes to the modulation of ATP-mediated activation in human MCs.
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Affiliation(s)
- Barbora Salcman
- Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Manchester M13 9NT, UK; (B.S.); (R.B.); (P.W.W.); (C.T.)
| | - Rajia Bahri
- Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Manchester M13 9NT, UK; (B.S.); (R.B.); (P.W.W.); (C.T.)
| | - Peter W. West
- Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Manchester M13 9NT, UK; (B.S.); (R.B.); (P.W.W.); (C.T.)
| | - Chiara Tontini
- Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Manchester M13 9NT, UK; (B.S.); (R.B.); (P.W.W.); (C.T.)
| | | | - Silvia Bulfone-Paus
- Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Manchester M13 9NT, UK; (B.S.); (R.B.); (P.W.W.); (C.T.)
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Badi YE, Salcman B, Taylor A, Rana B, Kermani NZ, Riley JH, Worsley S, Mumby S, Dahlen SE, Cousins D, Bulfone-Paus S, Affleck K, Chung KF, Bates S, Adcock IM. IL1RAP expression and the enrichment of IL-33 activation signatures in severe neutrophilic asthma. Allergy 2023; 78:156-167. [PMID: 35986608 PMCID: PMC10086999 DOI: 10.1111/all.15487] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 07/06/2022] [Accepted: 07/14/2022] [Indexed: 01/09/2023]
Abstract
BACKGROUND Interleukin (IL)-33 is an upstream regulator of type 2 (T2) eosinophilic inflammation and has been proposed as a key driver of some asthma phenotypes. OBJECTIVE To derive gene signatures from in vitro studies of IL-33-stimulated cells and use these to determine IL-33-associated enrichment patterns in asthma. METHODS Signatures downstream of IL-33 stimulation were derived from our in vitro study of human mast cells and from public datasets of in vitro stimulated human basophils, type 2 innate lymphoid cells (ILC2), regulatory T cells (Treg) and endothelial cells. Gene Set Variation Analysis (GSVA) was used to probe U-BIOPRED and ADEPT sputum transcriptomics to determine enrichment scores (ES) for each signature according to asthma severity, sputum granulocyte status and previously defined molecular phenotypes. RESULTS IL-33-activated gene signatures were cell-specific with little gene overlap. Individual signatures, however, were associated with similar signalling pathways (TNF, NF-κB, IL-17 and JAK/STAT signalling) and immune cell differentiation pathways (Th17, Th1 and Th2 differentiation). ES for IL-33-activated gene signatures were significantly enriched in asthmatic sputum, particularly in patients with neutrophilic and mixed granulocytic phenotypes. IL-33 mRNA expression was not elevated in asthma whereas the expression of mRNA for IL1RL1, the IL-33 receptor, was up-regulated in the sputum of severe eosinophilic asthma. The mRNA expression for IL1RAP, the IL1RL1 co-receptor, was greatest in severe neutrophilic and mixed granulocytic asthma. CONCLUSIONS IL-33-activated gene signatures are elevated in neutrophilic and mixed granulocytic asthma corresponding with IL1RAP co-receptor expression. This suggests incorporating T2-low asthma in anti-IL-33 trials.
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Affiliation(s)
- Yusef Eamon Badi
- National Heart and Lung Institute, Imperial College London, London, UK.,Data Science Institute, Imperial College London, London, UK.,BenevolentAI, London, UK
| | - Barbora Salcman
- School of Biological Sciences, University of Manchester, Manchester, UK
| | - Adam Taylor
- GSK Respiratory Therapeutic Area Unit, Stevenage, UK
| | | | | | - John H Riley
- School of Biological Sciences, University of Manchester, Manchester, UK
| | - Sally Worsley
- GSK Value Evidence and Outcomes, GSK House, Brentford, UK
| | - Sharon Mumby
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Sven-Eric Dahlen
- Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden
| | - David Cousins
- Department of Respiratory Sciences, University of Leicester, Leicester, UK
| | | | | | - Kian Fan Chung
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Stewart Bates
- School of Biological Sciences, University of Manchester, Manchester, UK
| | - Ian M Adcock
- National Heart and Lung Institute, Imperial College London, London, UK
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Garcia-Rodriguez KM, Goenka A, Thomson DD, Bahri R, Tontini C, Salcman B, Hernandez-Pando R, Bulfone-Paus S. Bacillus Calmette-Guérin-Induced Human Mast Cell Activation Relies on IL-33 Priming. Int J Mol Sci 2022; 23:7549. [PMID: 35886897 PMCID: PMC9320129 DOI: 10.3390/ijms23147549] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/04/2022] [Accepted: 07/05/2022] [Indexed: 02/04/2023] Open
Abstract
Bacillus Calmette-Guérin (BCG) vaccine is an attenuated strain of Mycobacterium bovis that provides weak protection against tuberculosis (TB). Mast cells (MCs) are tissue-resident immune cells strategically that serve as the first line of defence against pathogenic threats. In this study, we investigated the response of human MCs (hMCs) to BCG. We found that naïve hMCs exposed to BCG did not secrete cytokines, degranulate, or support the uptake and intracellular growth of bacteria. Since we could show that in hMCs IL-33 promotes the transcription of host-pathogen interaction, cell adhesion and activation genes, we used IL-33 for cell priming. The treatment of hMCs with IL-33, but not IFN-γ, before BCG stimulation increased IL-8, MCP-1 and IL-13 secretion, and induced an enhanced expression of the mycobacteria-binding receptor CD48. These effects were comparable to those caused by the recombinant Mycobacterium tuberculosis (Mtb) 19-KDa lipoprotein. Finally, stimulation of hMCs with IL-33 incremented MC-BCG interactions. Thus, we propose that IL-33 may improve the immunogenicity of BCG vaccine by sensitising hMCs.
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Affiliation(s)
- Karen M. Garcia-Rodriguez
- Lydia Becker Institute of Immunology and Inflammation, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PL, UK; (K.M.G.-R.); (D.D.T.); (R.B.); (C.T.); (B.S.)
- School of Materials, Faculty of Science and Engineering, University of Manchester, Manchester M13 9PL, UK
| | - Anu Goenka
- School of Cellular and Molecular Medicine, University of Bristol, Bristol BS8 1TH, UK;
| | - Darren D. Thomson
- Lydia Becker Institute of Immunology and Inflammation, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PL, UK; (K.M.G.-R.); (D.D.T.); (R.B.); (C.T.); (B.S.)
- MRC Centre for Medical Mycology, University of Exeter, Exeter EX4 4PY, UK
| | - Rajia Bahri
- Lydia Becker Institute of Immunology and Inflammation, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PL, UK; (K.M.G.-R.); (D.D.T.); (R.B.); (C.T.); (B.S.)
| | - Chiara Tontini
- Lydia Becker Institute of Immunology and Inflammation, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PL, UK; (K.M.G.-R.); (D.D.T.); (R.B.); (C.T.); (B.S.)
| | - Barbora Salcman
- Lydia Becker Institute of Immunology and Inflammation, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PL, UK; (K.M.G.-R.); (D.D.T.); (R.B.); (C.T.); (B.S.)
| | - Rogelio Hernandez-Pando
- Experimental Pathology Section, Department of Pathology, National Institute of Medical Sciences and Nutrition “Salvador Zubirán”, Mexico City 14080, Mexico;
| | - Silvia Bulfone-Paus
- Lydia Becker Institute of Immunology and Inflammation, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PL, UK; (K.M.G.-R.); (D.D.T.); (R.B.); (C.T.); (B.S.)
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Salcman B, Affleck K, Bulfone-Paus S. P2X Receptor-Dependent Modulation of Mast Cell and Glial Cell Activities in Neuroinflammation. Cells 2021; 10:cells10092282. [PMID: 34571930 PMCID: PMC8471135 DOI: 10.3390/cells10092282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/23/2021] [Accepted: 08/30/2021] [Indexed: 11/27/2022] Open
Abstract
Localisation of mast cells (MCs) at the abluminal side of blood vessels in the brain favours their interaction with glial cells, neurons, and endothelial cells, resulting in the activation of these cells and the release of pro-inflammatory mediators. In turn, stimulation of glial cells, such as microglia, astrocytes, and oligodendrocytes may result in the modulation of MC activities. MCs, microglia, astrocytes, and oligodendrocytes all express P2X receptors (P2XRs) family members that are selectively engaged by ATP. As increased concentrations of extracellular adenosine 5′-triphosphate (ATP) are present in the brain in neuropathological conditions, P2XR activation in MCs and glial cells contributes to the control of their communication and amplification of the inflammatory response. In this review we discuss P2XR-mediated MC activation, its bi-directional effect on microglia, astrocytes and oligodendrocytes and role in neuroinflammation.
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Affiliation(s)
- Barbora Salcman
- Lydia Becker Institute of Immunology and Inflammation, Manchester Collaborative Centre for Inflammation Research, University of Manchester, Manchester M13 9NT, UK;
| | - Karen Affleck
- GlaxoSmithKline, Immunology Research Unit, Stevenage SG1 2NY, UK;
| | - Silvia Bulfone-Paus
- Lydia Becker Institute of Immunology and Inflammation, Manchester Collaborative Centre for Inflammation Research, University of Manchester, Manchester M13 9NT, UK;
- Correspondence:
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