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Nagashima N, Ugajin T, Miyake K, Walls AF, Namiki T, Yokozeki H, Karasuyama H, Okiyama N. Cutaneous basophil infiltration in atopic dermatitis is associated with abundant epidermal infiltration of helper T cells: A preliminary retrospective study. J Dermatol 2024; 51:130-134. [PMID: 37789696 DOI: 10.1111/1346-8138.16987] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 09/12/2023] [Accepted: 09/18/2023] [Indexed: 10/05/2023]
Abstract
Atopic dermatitis (AD) is a heterogenous inflammatory skin disorder. Our previous study revealed that basophil infiltration in skin is observed in approximately 60% of AD cases. However, the clinical and histological characteristics of AD associated with basophil infiltration remain unclear. We examined basophil infiltration by immunohistochemical staining of 38 specimens from 34 patients who underwent skin biopsies to diagnose AD from April 2016 to September 2021 at Tokyo Medical and Dental University Hospital. The patients/specimens were divided into two groups, 17 patients/21 specimens associated with little or no basophil infiltration (basophil-low group) and 17 patients/17 specimens associated with marked basophil infiltration (basophil-high group). The clinical characteristics of the patients (age, sex, complications, blood biomarkers, skin symptoms, and treatment) and histological features of the specimens were compared between the groups. Basophil-high patients were significantly younger than basophil-low patients. Blood basophil counts were higher in basophil-high patients than in basophil-low patients. CD4+ T-cell infiltration was more marked in basophil-high specimens than in basophil-low specimens. CD4+ T cells infiltrated into the dermis as well as into the epidermis only in the basophil-high specimens. Thus, basophil-high AD can be characterized by skin lesions associated with abundant helper T-cell infiltration in younger patients.
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Affiliation(s)
- Natsumi Nagashima
- Department of Dermatology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tsukasa Ugajin
- Department of Dermatology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kensuke Miyake
- Inflammation, Infection & Immunity Laboratory, Advanced Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Andrew F Walls
- Immunopharmacology Group, University of Southampton, Southampton, UK
| | - Takeshi Namiki
- Department of Dermatology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hiroo Yokozeki
- Department of Dermatology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hajime Karasuyama
- Inflammation, Infection & Immunity Laboratory, Advanced Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Naoko Okiyama
- Department of Dermatology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
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Kishimoto I, Ma N, Takimoto-Ito R, Nakashima C, Otsuka A, Walls AF, Tanizaki H, Kambe N. Decreased peripheral basophil counts in urticaria and mouse model of oxazolone-induced hypersensitivity, the latter suggesting basopenia reflecting migration to skin. Front Immunol 2022; 13:1014924. [PMID: 36248789 PMCID: PMC9557233 DOI: 10.3389/fimmu.2022.1014924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 09/14/2022] [Indexed: 11/25/2022] Open
Abstract
A decrease in the number of basophils in the peripheral blood, or basopenia, has been noted, reflecting the activity of chronic spontaneous urticaria (CSU). Infiltration of basophils into the skin has also been reported, but the mechanism of basopenia in CSU has not been clarified. The phenomenon of basopenia during the active phase of urticaria was confirmed, and basophil numbers increased following symptom improvement in 15 out of 17 patients treated with omalizumab and in 13 of 15 patients treated with antihistamines. Our examination by immunostaining also revealed basophil infiltration of the CSU lesions, as in previous reports, but since most of our patients were already taking oral steroids, it was not considered appropriate to examine the relationship between basophil numbers in tissue and peripheral blood. Then, we used mouse model of contact hypersensitivity with a single application of oxazolone, which is known to stimulate basophil infiltration, and investigated basophil counts in the skin, peripheral blood, and bone marrow. In this model, a decrease in peripheral blood basophil numbers was observed one day after challenge, but not after 2 days, reflecting supplementation from the bone marrow. Indeed, when cultured basophils expressing GFP were transplanted into the peripheral blood, GFP-positive basophil numbers in the peripheral blood remained low even after 2 days of challenge. Despite differences among species and models, these results suggest that one reason for the decrease of basophils in the peripheral blood in CSU may involve migration of circulating basophils into the skin.
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Affiliation(s)
- Izumi Kishimoto
- Department of Dermatology, Kansai Medical University, Hirakata, Japan
| | - Ni Ma
- Department of Dermatology, Kansai Medical University, Hirakata, Japan
| | - Riko Takimoto-Ito
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Chisa Nakashima
- Department of Dermatology, Kindai University Graduate School of Medical Sciences, Sayama, Japan
| | - Atsushi Otsuka
- Department of Dermatology, Kindai University Graduate School of Medical Sciences, Sayama, Japan
| | - Andrew F. Walls
- Immunopharmacology Group, Clinical and Experimental Sciences, University of Southampton, Southampton, United Kingdom
| | - Hideaki Tanizaki
- Department of Dermatology, Kansai Medical University, Hirakata, Japan
| | - Naotomo Kambe
- Department of Dermatology, Kansai Medical University, Hirakata, Japan
- Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
- *Correspondence: Naotomo Kambe,
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Pan Q, Walls AF, Pan Q. Editorial: Th2-associated immunity in the pathogenesis of systemic lupus erythematosus and rheumatoid arthritis. Front Immunol 2022; 13:975553. [PMID: 35874701 PMCID: PMC9301996 DOI: 10.3389/fimmu.2022.975553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 06/28/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Quanren Pan
- Guangdong Provincial Key Laboratory of Autophagy and Major Chronic Non-communicable Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Andrew F. Walls
- School of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
- *Correspondence: Andrew F. Walls, ; Qingjun Pan,
| | - Qingjun Pan
- Guangdong Provincial Key Laboratory of Autophagy and Major Chronic Non-communicable Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
- *Correspondence: Andrew F. Walls, ; Qingjun Pan,
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Biggs TC, Abadalkareem RS, Hayes SM, Holding RE, Lau LC, Harries PG, Allan RN, Pender SLF, Walls AF, Salib RJ. Staphylococcus aureus internalisation enhances bacterial survival through modulation of host immune responses and mast cell activation. Allergy 2021; 76:1893-1896. [PMID: 33314209 DOI: 10.1111/all.14701] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 11/20/2020] [Accepted: 12/06/2020] [Indexed: 11/30/2022]
Affiliation(s)
- Timothy C. Biggs
- School of Clinical and Experimental Sciences Faculty of Medicine University of Southampton Southampton UK
- Southampton NIHR Respiratory Biomedical Research Centre University of Southampton and University Hospital Southampton NHS Foundation Trust Southampton UK
- Department of Otorhinolaryngology / Head & Neck Surgery University Hospital Southampton NHS Foundation Trust Southampton UK
- NIHR Wellcome Trust Clinical Research FacilityUniversity Hospital Southampton NHS Foundation Trust Southampton UK
| | - Rana S. Abadalkareem
- School of Clinical and Experimental Sciences Faculty of Medicine University of Southampton Southampton UK
| | - Stephen M. Hayes
- School of Clinical and Experimental Sciences Faculty of Medicine University of Southampton Southampton UK
- Southampton NIHR Respiratory Biomedical Research Centre University of Southampton and University Hospital Southampton NHS Foundation Trust Southampton UK
- Department of Otorhinolaryngology / Head & Neck Surgery University Hospital Southampton NHS Foundation Trust Southampton UK
- NIHR Wellcome Trust Clinical Research FacilityUniversity Hospital Southampton NHS Foundation Trust Southampton UK
| | - Rebecca E. Holding
- School of Clinical and Experimental Sciences Faculty of Medicine University of Southampton Southampton UK
| | - Laurie C. Lau
- School of Clinical and Experimental Sciences Faculty of Medicine University of Southampton Southampton UK
- Southampton NIHR Respiratory Biomedical Research Centre University of Southampton and University Hospital Southampton NHS Foundation Trust Southampton UK
| | - Philip G. Harries
- Department of Otorhinolaryngology / Head & Neck Surgery University Hospital Southampton NHS Foundation Trust Southampton UK
| | - Raymond N. Allan
- NIHR Wellcome Trust Clinical Research FacilityUniversity Hospital Southampton NHS Foundation Trust Southampton UK
- Faculty of Environmental & Life Sciences Department of Biological Sciences University of Southampton Southampton UK
| | - Sylvia L. F. Pender
- School of Clinical and Experimental Sciences Faculty of Medicine University of Southampton Southampton UK
| | - Andrew F. Walls
- School of Clinical and Experimental Sciences Faculty of Medicine University of Southampton Southampton UK
| | - Rami J. Salib
- School of Clinical and Experimental Sciences Faculty of Medicine University of Southampton Southampton UK
- Southampton NIHR Respiratory Biomedical Research Centre University of Southampton and University Hospital Southampton NHS Foundation Trust Southampton UK
- Department of Otorhinolaryngology / Head & Neck Surgery University Hospital Southampton NHS Foundation Trust Southampton UK
- NIHR Wellcome Trust Clinical Research FacilityUniversity Hospital Southampton NHS Foundation Trust Southampton UK
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Jogdand P, Siddhuraj P, Mori M, Sanden C, Jönsson J, Walls AF, Kearley J, Humbles AA, Kolbeck R, Bjermer L, Newbold P, Erjefält JS. Eosinophils, basophils and type 2 immune microenvironments in COPD-affected lung tissue. Eur Respir J 2020; 55:13993003.00110-2019. [PMID: 32060064 PMCID: PMC7236868 DOI: 10.1183/13993003.00110-2019] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 02/06/2020] [Indexed: 01/20/2023]
Abstract
Although elevated blood or sputum eosinophils are present in many patients with COPD, uncertainties remain regarding the anatomical distribution pattern of lung-infiltrating eosinophils. Basophils have remained virtually unexplored in COPD. This study mapped tissue-infiltrating eosinophils, basophils and eosinophil-promoting immune mechanisms in COPD-affected lungs. Surgical lung tissue and biopsies from major anatomical compartments were obtained from COPD patients with severity grades Global Initiative for Chronic Obstructive Lung Disease stages I–IV; never-smokers/smokers served as controls. Automated immunohistochemistry and in situ hybridisation identified immune cells, the type 2 immunity marker GATA3 and eotaxins (CCL11, CCL24). Eosinophils and basophils were present in all anatomical compartments of COPD-affected lungs and increased significantly in very severe COPD. The eosinophilia was strikingly patchy, and focal eosinophil-rich microenvironments were spatially linked with GATA3+ cells, including type 2 helper T-cell lymphocytes and type 2 innate lymphoid cells. A similarly localised and interleukin-33/ST2-dependent eosinophilia was demonstrated in influenza-infected mice. Both mice and patients displayed spatially confined eotaxin signatures with CCL11+ fibroblasts and CCL24+ macrophages. In addition to identifying tissue basophilia as a novel feature of advanced COPD, the identification of spatially confined eosinophil-rich type 2 microenvironments represents a novel type of heterogeneity in the immunopathology of COPD that is likely to have implications for personalised treatment. Highly localised Th2- and eosinophil-rich pockets were identified in COPD-affected lungs, which increased in number with increasing disease severity and included basophils. This exemplifies a novel type of heterogeneity in the immunopathology of COPD.http://bit.ly/2HexTco
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Affiliation(s)
- Prajakta Jogdand
- Dept of Experimental Medical Science, Lund University, Lund, Sweden
| | | | - Michiko Mori
- Dept of Experimental Medical Science, Lund University, Lund, Sweden
| | - Caroline Sanden
- Dept of Experimental Medical Science, Lund University, Lund, Sweden.,Medetect AB, Lund, Sweden
| | | | - Andrew F Walls
- Clinical and Experimental Sciences, University of Southampton, Southampton General Hospital, Southampton, UK
| | - Jennifer Kearley
- Dept of Respiratory, Inflammation and Autoimmunity, AstraZeneca, Gaithersburg, MD, USA
| | - Alison A Humbles
- Dept of Respiratory, Inflammation and Autoimmunity, AstraZeneca, Gaithersburg, MD, USA
| | - Roland Kolbeck
- Dept of Respiratory, Inflammation and Autoimmunity, AstraZeneca, Gaithersburg, MD, USA
| | - Leif Bjermer
- Dept of Respiratory Medicine and Allergology, Lund University, Lund, Sweden
| | - Paul Newbold
- Dept of Translational Sciences, AstraZeneca, Gaithersburg, MD, USA
| | - Jonas S Erjefält
- Dept of Experimental Medical Science, Lund University, Lund, Sweden .,Dept of Respiratory Medicine and Allergology, Lund University, Lund, Sweden
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Abstract
Staining cells or tissues with basic dyes was the mainstay of mast cell and basophil detection methods for more than a century following the first identification of these cell types using such methods. These techniques have now been largely supplanted by immunohistochemical procedures with monoclonal antibodies directed against unique constituents of these cell types. Immunohistochemistry with antibodies specific for the granule protease tryptase provides a more sensitive and discriminating means for detecting mast cells than using the classical histochemical procedures, and using antibodies specific for products of basophils (2D7 antigen and basogranulin) has allowed detection of basophils that infiltrate into tissues. The application of immunohistochemistry to detect more than one marker in the same cell has underpinned concepts of mast cell heterogeneity based on differential expression of chymase and other proteases. The double labeling procedures employed have also provided a means for investigating the expression of cytokines and a range of other products. Protocols are here set out that have been used for immunohistochemical detection of mast cells and basophils and their subpopulations in human tissues. Consideration is given to pitfalls to avoid and to a range of alternative approaches.
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Affiliation(s)
- Andrew F Walls
- Southampton General Hospital, University of Southampton, Southampton, UK.
| | - Cornelia Amalinei
- "Grigore T. Popa" University of Medicine and Pharmacy, Iasi, Romania
- Institute of Legal Medicine, Iasi, Romania
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Biggs TC, Hayes SM, Harries PG, Allan RN, Walls AF, Pender SLF, Salib RJ. Immunological profiling of key inflammatory drivers of nasal polyp formation and growth in chronic rhinosinusitis. Rhinology 2019; 57:336-342. [PMID: 31317972 DOI: 10.4193/rhin19.167] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Chronic rhinosinusitis (CRS) is a chronic inflammatory condition of the upper airways, often associated with the formation of nasal polyps (CRSwNP). It is well established that macroscopically normal (non-polypoidal) sinonasal mucosa in CRSwNP patients can undergo polypoidal change over time, turning into frank polyps. However, little is known about what drives this process. This study aimed to investigate potential drivers of nasal polyp formation or growth through comparison of the immunological profiles of nasal polyps with contiguous non-polypoidal sinonasal mucosa, from the same patients. METHODS The immune profiles of three types of tissue were compared; nasal polyps and adjacent non-polypoidal sinonasal mucosa from 10 CRSwNP patients, and sinonasal mucosa from 10 control patients undergoing trans-sphenoidal pituitary surgery. Nasal polyp and control samples were also stimulated with Staphylococcus aureus enterotoxin B (SEB) using a nasal explant model, prior to cytokine analysis. Real time quantitative polymerase chain reaction (IL-5, T-bet, IL-17A, FoxP3, TLR-4, IL-8, IL-1beta and IL-6) and Luminex (IFNgamma, IL-5 and IL-17A) were used to quantify pro-inflammatory responses. RESULTS Nasal polyps and contiguous non-polypoidal sinonasal mucosa from CRSwNP patients displayed a very similar pro-inflammatory profile. When stimulated with SEB, nasal polyps displayed a Th2/Th17 mediated response when compared to controls. CONCLUSIONS In CRSwNP, nasal polyps and non-polypoidal sinonasal mucosa from the same patient displayed a similar pro-inflammatory profile skewed towards the Th2/Th17 pathway in nasal polyps following SEB stimulation, with evidence of disordered bacterial clearance. These factors may contribute to enhanced survival of bacteria and development of a chronic inflammatory milieu, potentially driving new polyp formation and recurrence following surgical removal.
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Affiliation(s)
- T C Biggs
- Academic Unit of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton; Southampton NIHR Respiratory Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust; University Ho
| | - S M Hayes
- Academic Unit of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton; Southampton NIHR Respiratory Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust; University Ho
| | - P G Harries
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - R N Allan
- NIHR Wellcome Trust Clinical Research Facility, University Hospital Southampton NHS Foundation Trust; Department of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Southampton, United Kingdom
| | - A F Walls
- Academic Unit of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - S L F Pender
- Academic Unit of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - R J Salib
- Academic Unit of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton; Southampton NIHR Respiratory Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust; University Ho
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Zhou X, Wei T, Cox CW, Walls AF, Jiang Y, Roche WR. Mast cell chymase impairs bronchial epithelium integrity by degrading cell junction molecules of epithelial cells. Allergy 2019; 74:1266-1276. [PMID: 30428129 DOI: 10.1111/all.13666] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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: 08/01/2018] [Revised: 09/05/2018] [Accepted: 09/25/2018] [Indexed: 12/30/2022]
Abstract
BACKGROUND An increased degree of mast cell (MC) degranulation and damage to the epithelial lining are prominent features of bronchial asthma. In asthmatic airways, it seems likely that epithelial cells will be exposed to increased concentrations of proteases from MC, though their actions on the epithelium are still not very clear. METHODS Bronchial rings from human lung tissue or 16HBE cell monolayer were incubated with MC chymase in different doses or various inhibitors. The sections of paraffin-embedded tissue were haematoxylin-eosin stained and computerized by image analysis for epithelial damage-scale-evaluation; the cell viability, proliferation, adhesion and lactate dehydrogenase activity release were assayed; the expressions of gelatinases, cell junction molecules and structure proteins of 16HBE were examined. RESULTS Mast cell chymase was found to provoke profound changes in the morphology of bronchi epithelial layer. Following incubation with chymase, there was 40% reduction in the length of epithelium that was intact, with detachment of columnar epithelial cells and basal cells. Chymase reduced epithelial cell proliferation and induced cell detachment, which were associated with the changes in secretion and activation of matrix metalloproteinase-2/9. In intact epithelial cell layers, immunocytochemistry study revealed that chymase reduced the expressions of occludin, claudin-4, ZO-1, E-cadherin, focal adhesion kinase and cytokeratin. Overall data of this study indicated that MC chymase can influence tissue remodelling, disrupt epithelial cell junctions, inhibit wound healing and impair the barrier function of epithelium, resulting in dysfunction of airway wall and ECM remodelling in pathogenesis of asthma. CONCLUSION Mast cell chymase plays a key role in inducing the damage to bronchial epithelium in asthma.
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Affiliation(s)
- Xiaoying Zhou
- The School of Pharmaceutical Engineering and Life Science Changzhou University Jiangsu China
- The Faculty of Medicine The University of Southampton Southampton UK
| | - Tao Wei
- The School of Pharmaceutical Engineering and Life Science Changzhou University Jiangsu China
| | | | - Andrew F. Walls
- The Faculty of Medicine The University of Southampton Southampton UK
| | - Yuan Jiang
- The School of Pharmaceutical Engineering and Life Science Changzhou University Jiangsu China
| | - William R. Roche
- The Faculty of Medicine The University of Southampton Southampton UK
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Hayes SM, Biggs TC, Goldie SP, Harries PG, Walls AF, Allan RN, Pender SLF, Salib RJ. Staphylococcus aureus internalization in mast cells in nasal polyps: Characterization of interactions and potential mechanisms. J Allergy Clin Immunol 2019; 145:147-159. [PMID: 31254531 DOI: 10.1016/j.jaci.2019.06.013] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 11/16/2018] [Revised: 05/30/2019] [Accepted: 06/04/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND Chronic rhinosinusitis (CRS) with nasal polyps is a common chronic condition. The exact cause of nasal polyps remains unknown. Recently, we made the novel observation of intracellular localization of Staphylococcus aureus within mast cells in nasal polyps. OBJECTIVE This follow-up study aimed to further characterize interactions between S aureus and mast cells in this setting and elucidate potential internalization mechanisms with particular emphasis on the role of staphylococcal enterotoxin B (SEB). METHODS A prospective study was performed using an explant tissue model with ex vivo inferior turbinate mucosa obtained from patients with chronic rhinosinusitis with nasal polyps (n = 7) and patients without CRS (n = 5). Immunohistochemistry was used to characterize S aureus uptake into mast cells and investigate the effects of SEB on this process. An in vitro cell-culture model was used to investigate mast cell-S aureus interactions by using a combination of fluorescent in situ hybridization, confocal laser scanning microscopy, scanning electron microscopy, transmission electron microscopy, and proliferation assays. RESULTS S aureus was captured by extracellular traps and entered mast cells through phagocytosis. Proliferating intracellular S aureus led to the expansion and eventual rupture of mast cells, resulting in release of viable S aureus into the extracellular space. The presence of SEB appeared to promote internalization of S aureus into mast cells. CONCLUSION This study provides new insights into the interactions between S aureus and mast cells, including the internalization process, and demonstrates a prominent role for SEB in promoting uptake of the bacteria into these cells.
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Affiliation(s)
- Stephen M Hayes
- School of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom; Southampton NIHR Respiratory Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom; Department of Otorhinolaryngology/Head & Neck Surgery, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom; NIHR Wellcome Trust Clinical Research Facility, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Timothy C Biggs
- School of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom; Southampton NIHR Respiratory Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom; Department of Otorhinolaryngology/Head & Neck Surgery, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom; NIHR Wellcome Trust Clinical Research Facility, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Simon P Goldie
- School of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom; Southampton NIHR Respiratory Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom; Department of Otorhinolaryngology/Head & Neck Surgery, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom; NIHR Wellcome Trust Clinical Research Facility, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Philip G Harries
- Department of Otorhinolaryngology/Head & Neck Surgery, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom
| | - Andrew F Walls
- School of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Raymond N Allan
- NIHR Wellcome Trust Clinical Research Facility, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom; Department of Biological Sciences, Faculty of Environmental & Life Sciences, University of Southampton, Southampton, United Kingdom
| | - Sylvia L F Pender
- School of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Rami J Salib
- School of Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom; Southampton NIHR Respiratory Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom; Department of Otorhinolaryngology/Head & Neck Surgery, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom; NIHR Wellcome Trust Clinical Research Facility, University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom.
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10
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Malik ST, Birch BR, Voegeli D, Fader M, Foria V, Cooper AJ, Walls AF, Lwaleed BA. Distribution of mast cell subtypes in interstitial cystitis: implications for novel diagnostic and therapeutic strategies? J Clin Pathol 2018; 71:840-844. [PMID: 29764932 DOI: 10.1136/jclinpath-2017-204881] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [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: 10/27/2017] [Revised: 04/03/2018] [Accepted: 04/10/2018] [Indexed: 11/04/2022]
Abstract
AIMS To identify the presence and geographical distribution of mast cell (MC) subtypes: MCT (tryptase positive-chymase negative) and MCTC (tryptase positive-chymase positive) in bladder tissue. METHODS Bladder tissue was obtained from patients with painful bladder syndrome/interstitial cystitis (n=14) and normal histology from University Hospital Southampton tissue bank. Sequential tissue slices were immunohistochemically stained for MC subtypes using anti-MC tryptase (for MCT and MCTC) and anti-MC chymase (for MCTC). Stained sections were photographed, and positively stained MCs were quantified using ImageJ. Data were analysed using descriptive statistics and individual paired t-tests. RESULTS There was a significant difference in the density of MCs between each layer of the disease bladder, with the greatest accumulation within the detrusor (p<0.001). There was a significant increase in MCTC subtype in the lamina (p=0.009) in painful bladder syndrome/interstitial cystitis. CONCLUSIONS Our results suggest that mastocytosis is present within all layers of disease bladder, especially the muscle layer. The varying increase in MC subtypes in the lamina and mucosa may explain the variability in painful bladder syndrome/interstitial cystitis symptoms. A high influx of MCTC in the mucosa of individuals who also had ulceration noted within their diagnostic notes may be of the Hunner's ulcer subclassification. These findings suggest a relationship between the pathogenesis of MC subtypes and the clinical presentation of painful bladder syndrome/interstitial cystitis. A cohort study would further elucidate the diagnostic and/or therapeutic potential of MCs in patients with painful bladder syndrome/interstitial cystitis.
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Affiliation(s)
- Shabana T Malik
- Faculty of Health Sciences, University of Southampton, Southampton, UK
| | - Brian R Birch
- Faculty of Medicine, University of Southampton, Southampton, UK
| | - David Voegeli
- Faculty of Health Sciences, University of Southampton, Southampton, UK
| | - Mandy Fader
- Faculty of Health Sciences, University of Southampton, Southampton, UK
| | - Vipul Foria
- Department of Histopathology, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Alan J Cooper
- Faculty of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth, UK
| | - Andrew F Walls
- Faculty of Medicine, University of Southampton, Southampton, UK
| | - Bashir A Lwaleed
- Faculty of Health Sciences, University of Southampton, Southampton, UK
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11
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Chu Y, Guo Y, Walls AF, Zhou X. The regulatory role of Dipeptidyl peptidase I on the activation of immune granulocytes. Cell Biol Int 2017; 41:1093-1102. [DOI: 10.1002/cbin.10815] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 06/28/2017] [Indexed: 12/20/2022]
Affiliation(s)
- Yi Chu
- The School of Pharmaceutical Engineering and Life Science; Changzhou University; Jiangsu 213164 China
| | - Yaming Guo
- The School of Pharmaceutical Engineering and Life Science; Changzhou University; Jiangsu 213164 China
| | - Andrew F. Walls
- The School of Pharmaceutical Engineering and Life Science; Changzhou University; Jiangsu 213164 China
- The School of Medicine; The University of Southampton; Southampton SO16 6YD UK
| | - Xiaoying Zhou
- The School of Pharmaceutical Engineering and Life Science; Changzhou University; Jiangsu 213164 China
- The School of Medicine; The University of Southampton; Southampton SO16 6YD UK
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Abadalkareem R, Lau LC, Abdelmotelb A, Zhou X, Eren E, Walls AF. Mast cell Tryptase and Carboxypeptidase A3 (CPA3) as Markers for Predicting Susceptibility to Severe Allergic Drug Reactions. J Allergy Clin Immunol 2017. [DOI: 10.1016/j.jaci.2016.12.185] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Metcalfe DD, Pawankar R, Ackerman SJ, Akin C, Clayton F, Falcone FH, Gleich GJ, Irani AM, Johansson MW, Klion AD, Leiferman KM, Levi-Schaffer F, Nilsson G, Okayama Y, Prussin C, Schroeder JT, Schwartz LB, Simon HU, Walls AF, Triggiani M. Biomarkers of the involvement of mast cells, basophils and eosinophils in asthma and allergic diseases. World Allergy Organ J 2016; 9:7. [PMID: 26904159 PMCID: PMC4751725 DOI: 10.1186/s40413-016-0094-3] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 01/14/2016] [Indexed: 12/19/2022] Open
Abstract
Biomarkers of disease activity have come into wide use in the study of mechanisms of human disease and in clinical medicine to both diagnose and predict disease course; as well as to monitor response to therapeutic intervention. Here we review biomarkers of the involvement of mast cells, basophils, and eosinophils in human allergic inflammation. Included are surface markers of cell activation as well as specific products of these inflammatory cells that implicate specific cell types in the inflammatory process and are of possible value in clinical research as well as within decisions made in the practice of allergy-immunology.
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Affiliation(s)
- Dean D. Metcalfe
- />Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892 USA
| | - Ruby Pawankar
- />Division of Allergy, Department of Pediatrics, Nippon Medical School, Tokyo, Japan
| | - Steven J. Ackerman
- />Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois, Chicago, IL USA
| | - Cem Akin
- />Harvard Medical School, Brigham and Women’s Hospital, Boston, MA USA
| | - Frederic Clayton
- />Department of Pathology, University of Utah Health Sciences Center, Salt Lake City, UT USA
| | - Franco H. Falcone
- />The School of Pharmacy, University of Nottingham, Nottingham, United Kingdom
| | - Gerald J. Gleich
- />Department of Dermatology, University of Utah, School of Medicine, Salt Lake City, UT USA
| | - Anne-Marie Irani
- />Virginia Commonwealth University, Children’s Hospital of Richmond, Richmond, VA USA
| | - Mats W. Johansson
- />Department of Biomolecular Chemistry, University of Wisconsin, Madison, WI USA
| | - Amy D. Klion
- />Human Eosinophil Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD USA
| | | | | | - Gunnar Nilsson
- />Clinical Immunology and Allergy, Department of Medicine, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden
| | - Yoshimichi Okayama
- />Allergy and Immunology Group, Research Institute of Medical Science, Nihon University Graduate School of Medicine, Tokyo, Japan
| | - Calman Prussin
- />Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892 USA
| | - John T. Schroeder
- />Division of Allergy and Clinical Immunology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD USA
| | | | - Hans-Uwe Simon
- />University of Bern, Institute of Pharmacology, Bern, Switzerland
| | - Andrew F. Walls
- />Southampton General Hospital, Immunopharmacology Group, Southampton, Hampshire UK
| | - Massimo Triggiani
- />Division of Allergy and Clinical Immunology, University of Salerno, Salerno, Italy
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14
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Lam C, Tan W, Leighton M, Hastings M, Lingaya M, Falcone Y, Zhou X, Xu L, Whorwell P, Walls AF, Zaitoun A, Montgomery A, Spiller R. A mechanistic multicentre, parallel group, randomised placebo-controlled trial of mesalazine for the treatment of IBS with diarrhoea (IBS-D). Gut 2016; 65:91-9. [PMID: 25765462 PMCID: PMC4717357 DOI: 10.1136/gutjnl-2015-309122] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 02/03/2015] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Immune activation has been reported in the mucosa of IBS patients with diarrhoea (IBS-D), and some small studies have suggested that mesalazine may reduce symptoms. We performed a double-blind, randomised placebo-controlled trial of 2 g mesalazine twice daily versus placebo for 3 months in patients with Rome III criteria IBS-D. Primary outcome was daily average stool frequency during weeks 11-12; secondary outcomes were abdominal pain, stool consistency, urgency and satisfactory relief of IBS symptoms. METHODS Participants were randomised after a 2-week baseline stool diary. All participants completed a 12-week stool diary and at the end of each week recorded the presence of 'satisfactory relief of IBS symptoms'. RESULTS 136 patients with IBS-D (82 women, 54 men) were randomised, 10 patients withdrew from each group. Analysis by intention to treat showed the daily average stool frequency during weeks 11 and 12 were mean (SD), 2.8 (1.2) in mesalazine and 2.7 (1.9) in the placebo group with no significant group difference, (95% CI) 0.1 (-0.33 to 0.53), p=0.66. Mesalazine did not improve abdominal pain, stool consistency nor percentage with satisfactory relief compared with placebo during the last two-weeks follow-up. CONCLUSIONS This study does not support any clinically meaningful benefit or harm of mesalazine compared with placebo in unselected patients with IBS-D. More precise subtyping based on underlying disease mechanisms is needed to allow more effective targeting of treatment in IBS. TRIAL REGISTRATION NUMBER NCT01316718.
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Affiliation(s)
- Ching Lam
- NIHR Nottingham Digestive Diseases Biomedical Research Unit, University of Nottingham, Nottingham, UK
| | - Wei Tan
- Nottingham Clinical Trials Unit, University of Nottingham, Nottingham, UK
| | - Matthew Leighton
- Nottingham Clinical Trials Unit, University of Nottingham, Nottingham, UK
| | | | - Melanie Lingaya
- NIHR Nottingham Digestive Diseases Biomedical Research Unit, University of Nottingham, Nottingham, UK
| | - Yirga Falcone
- NIHR Nottingham Digestive Diseases Biomedical Research Unit, University of Nottingham, Nottingham, UK
| | - Xiaoying Zhou
- Immunopharmacology Group, University of Southampton, Southampton General Hospital, Southampton, UK
| | - Luting Xu
- FRAME laboratory, University of Nottingham, Nottingham, UK
| | - Peter Whorwell
- Neurogastroenterology Unit, Wythenshawe Hospital, Manchester, UK
| | - Andrew F Walls
- Immunopharmacology Group, University of Southampton, Southampton General Hospital, Southampton, UK
| | - Abed Zaitoun
- Department of Histopathology, Nottingham University Hospital Trusts, Nottingham, UK
| | - Alan Montgomery
- Nottingham Clinical Trials Unit, University of Nottingham, Nottingham, UK
| | - Robin Spiller
- NIHR Nottingham Digestive Diseases Biomedical Research Unit, University of Nottingham, Nottingham, UK
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15
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Hurley MJ, Durrenberger PF, Gentleman SM, Walls AF, Dexter DT. Altered Expression of Brain Proteinase-Activated Receptor-2, Trypsin-2 and Serpin Proteinase Inhibitors in Parkinson's Disease. J Mol Neurosci 2015; 57:48-62. [PMID: 25982926 DOI: 10.1007/s12031-015-0576-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 05/05/2015] [Indexed: 10/23/2022]
Abstract
Neuroinflammation is thought to contribute to cell death in neurodegenerative disorders, but the factors involved in the inflammatory process are not completely understood. Proteinase-activated receptor-2 (PAR2) expression in brain is increased in Alzheimer's disease and multiple sclerosis, but the status of PAR2 in Parkinson's disease is unknown. This study examined expression of PAR2 and endogenous proteinase activators (trypsin-2, mast cell tryptase) and proteinase inhibitors (serpin-A5, serpin-A13) in areas vulnerable and resistant to neurodegeneration in Parkinson's disease at different Braak α-synuclein stages of the disease in post-mortem brain. In normal aged brain, expression of PAR-2, trypsin-2, and serpin-A5 and serpin-A13 was found in neurons and microglia, and alterations in the amount of immunoreactivity for these proteins were found in some brain regions. Namely, there was a decrease in neurons positive for serpin-A5 in the dorsal motor nucleus, and serpin-A13 expression was reduced in the locus coeruleus and primary motor cortex, while expression of PAR2, trypsin-2 and both serpins was reduced in neurons within the substantia nigra. There was an increased number of microglia that expressed serpin-A5 in the dorsal motor nucleus of vagus and elevated numbers of microglia that expressed serpin-A13 in the substantia nigra of late Parkinson's disease cases. The number of microglia that expressed trypsin-2 increased in primary motor cortex of incidental Lewy body disease cases. Analysis of Parkinson's disease cases alone indicated that serpin-A5 and serpin-A13, and trypsin-2 expression in midbrain and cerebral cortex was different in cases with a high incidence of L-DOPA-induced dyskinesia and psychosis compared to those with low levels of these treatment-induced side effects. This study showed that there was altered expression in brain of PAR2 and some proteins that can control its function in Parkinson's disease. Given the role of PAR2 in neuroinflammation, drugs that mitigate these changes may be neuroprotective when administered to patients with Parkinson's disease.
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Affiliation(s)
- Michael J Hurley
- Centre for Neuroinflammation and Neurodegeneration, Division of Brain Sciences, Department of Medicine, Imperial College London, Hammersmith Campus, Du Cane Road, London, W12 0NN, UK,
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16
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Iwakura N, Fujiwara Y, Tanaka F, Tanigawa T, Yamagami H, Shiba M, Tominaga K, Watanabe T, Iijima K, Koike T, Walls AF, Arakawa T. Basophil infiltration in eosinophilic oesophagitis and proton pump inhibitor-responsive oesophageal eosinophilia. Aliment Pharmacol Ther 2015; 41:776-84. [PMID: 25693747 DOI: 10.1111/apt.13141] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 02/04/2015] [Accepted: 02/05/2015] [Indexed: 12/14/2022]
Abstract
BACKGROUND The features of proton pump inhibitor-responsive oesophageal eosinophilia (PPI-REE) are similar to those of eosinophilic oesophagitis (EoE), but PPI-REE demonstrates symptomatic and histological responses to PPI therapy. Several studies have shown that basophils play a crucial role in the pathogenesis of allergic diseases. AIM To identify and compare basophil infiltration in the oesophageal epithelium in patients with EoE, PPI-REE, gastroesophageal reflux disease (GERD) and normal oesophagus (controls). METHODS Biopsy specimens from 43 patients, including 12 with EoE, 11 with PPI-REE, 10 with GERD and 10 normal oesophagus, were analysed. Immunohistochemistry was performed to quantify the number of basophils and mast cells in the oesophageal epithelium. Double immunofluorescence staining for thymic stromal lymphopoietin (TSLP) and basophils was performed. Patients with EoE were treated with swallowed fluticasone. RESULTS There were no differences in clinical, endoscopic or histological features between patients with EoE and PPI-REE. There were more basophils and mast cells in patients with EoE and PPI-REE than in patients with GERD and control subjects. Basophil infiltration of the oesophageal epithelium in patients with EoE was higher than that in patients with PPI-REE (3.6 ± 2.8 per high power field vs. 1.2 ± 0.9 per high power field respectively; P = 0.02); however, there was no significant difference in mast cell infiltration between the two groups. TSLP was highly expressed in the oesophageal epithelium in areas infiltrated by basophils. Steroid therapy significantly decreased intraepithelial basophils in patients with EoE. CONCLUSION Basophils may play an important role in the pathogenesis of eosinophilic oesophagitis.
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Affiliation(s)
- N Iwakura
- Department of Gastroenterology, Osaka City University Graduate School of Medicine, Osaka, Japan
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17
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Hinks TSC, Zhou X, Staples KJ, Dimitrov BD, Manta A, Petrossian T, Lum PY, Smith CG, Ward JA, Howarth PH, Walls AF, Gadola SD, Djukanović R. Innate and adaptive T cells in asthmatic patients: Relationship to severity and disease mechanisms. J Allergy Clin Immunol 2015; 136:323-33. [PMID: 25746968 PMCID: PMC4534770 DOI: 10.1016/j.jaci.2015.01.014] [Citation(s) in RCA: 158] [Impact Index Per Article: 17.6] [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: 06/24/2014] [Revised: 01/12/2015] [Accepted: 01/16/2015] [Indexed: 01/10/2023]
Abstract
Background Asthma is a chronic inflammatory disease involving diverse cells and mediators whose interconnectivity and relationships to asthma severity are unclear. Objective We performed a comprehensive assessment of TH17 cells, regulatory T cells, mucosal-associated invariant T (MAIT) cells, other T-cell subsets, and granulocyte mediators in asthmatic patients. Methods Sixty patients with mild-to-severe asthma and 24 control subjects underwent detailed clinical assessment and provided induced sputum, endobronchial biopsy, bronchoalveolar lavage, and blood samples. Adaptive and invariant T-cell subsets, cytokines, mast cells, and basophil mediators were analyzed. Results Significant heterogeneity of T-cell phenotypes was observed, with levels of IL-13–secreting T cells and type 2 cytokines increased at some, but not all, asthma severities. TH17 cells and γδ-17 cells, proposed drivers of neutrophilic inflammation, were not strongly associated with asthma, even in severe neutrophilic forms. MAIT cell frequencies were strikingly reduced in both blood and lung tissue in relation to corticosteroid therapy and vitamin D levels, especially in patients with severe asthma in whom bronchoalveolar lavage regulatory T-cell numbers were also reduced. Bayesian network analysis identified complex relationships between pathobiologic and clinical parameters. Topological data analysis identified 6 novel clusters that are associated with diverse underlying disease mechanisms, with increased mast cell mediator levels in patients with severe asthma both in its atopic (type 2 cytokine–high) and nonatopic forms. Conclusion The evidence for a role for TH17 cells in patients with severe asthma is limited. Severe asthma is associated with a striking deficiency of MAIT cells and high mast cell mediator levels. This study provides proof of concept for disease mechanistic networks in asthmatic patients with clusters that could inform the development of new therapies.
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Affiliation(s)
- Timothy S C Hinks
- Clinical and Experimental Sciences, University of Southampton Faculty of Medicine, Sir Henry Wellcome Laboratories, Southampton University Hospital, Southampton, United Kingdom; NIHR Southampton Respiratory Biomedical Research Unit, Southampton University Hospital, Southampton, United Kingdom
| | - Xiaoying Zhou
- Clinical and Experimental Sciences, University of Southampton Faculty of Medicine, Sir Henry Wellcome Laboratories, Southampton University Hospital, Southampton, United Kingdom
| | - Karl J Staples
- Clinical and Experimental Sciences, University of Southampton Faculty of Medicine, Sir Henry Wellcome Laboratories, Southampton University Hospital, Southampton, United Kingdom
| | - Borislav D Dimitrov
- NIHR Southampton Respiratory Biomedical Research Unit, Southampton University Hospital, Southampton, United Kingdom; Primary Care and Population Sciences, University of Southampton Faculty of Medicine, Southampton University Hospital, Southampton, United Kingdom
| | | | | | | | - Caroline G Smith
- Primary Care and Population Sciences, University of Southampton Faculty of Medicine, Southampton University Hospital, Southampton, United Kingdom
| | - Jon A Ward
- Clinical and Experimental Sciences, University of Southampton Faculty of Medicine, Sir Henry Wellcome Laboratories, Southampton University Hospital, Southampton, United Kingdom; NIHR Southampton Respiratory Biomedical Research Unit, Southampton University Hospital, Southampton, United Kingdom
| | - Peter H Howarth
- Clinical and Experimental Sciences, University of Southampton Faculty of Medicine, Sir Henry Wellcome Laboratories, Southampton University Hospital, Southampton, United Kingdom; NIHR Southampton Respiratory Biomedical Research Unit, Southampton University Hospital, Southampton, United Kingdom
| | - Andrew F Walls
- Clinical and Experimental Sciences, University of Southampton Faculty of Medicine, Sir Henry Wellcome Laboratories, Southampton University Hospital, Southampton, United Kingdom
| | - Stephan D Gadola
- Clinical and Experimental Sciences, University of Southampton Faculty of Medicine, Sir Henry Wellcome Laboratories, Southampton University Hospital, Southampton, United Kingdom; Novartis Institute of Biomedical Research, Novartis, Basel, Switzerland
| | - Ratko Djukanović
- Clinical and Experimental Sciences, University of Southampton Faculty of Medicine, Sir Henry Wellcome Laboratories, Southampton University Hospital, Southampton, United Kingdom; NIHR Southampton Respiratory Biomedical Research Unit, Southampton University Hospital, Southampton, United Kingdom.
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18
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Zhou X, Eren E, Rae W, Walls AF. Bradykinin Generation in Acute Allergic Reactions and Angioedema: Roles of Mast Cell Tryptase and Chymase. J Allergy Clin Immunol 2015. [DOI: 10.1016/j.jaci.2014.12.1142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Abdelmotelb AM, Rose-Zerilli MJ, Barton SJ, Holgate ST, Walls AF, Holloway JW. Alpha-tryptase gene variation is associated with levels of circulating IgE and lung function in asthma. Clin Exp Allergy 2015; 44:822-30. [PMID: 24372627 PMCID: PMC4282335 DOI: 10.1111/cea.12259] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 11/20/2013] [Accepted: 11/27/2013] [Indexed: 12/31/2022]
Abstract
Background Tryptase, a major secretory product of human mast cells has been implicated as a key mediator of allergic inflammation. Genetic variation in the tryptases is extensive, and α-tryptase, an allelic variant of the more extensively studied β-tryptase, is absent in substantial numbers of the general population. The degree to which α-tryptase expression may be associated with asthma has not been studied. We have investigated the α-tryptase gene copy number variation and its potential associations with phenotypes of asthma. Objectives Caucasian families (n = 341) with at least two asthmatic siblings (n = 1350) were genotyped for the α-tryptase alleles, using high-resolution melting assays. Standards for the possible α-/β-tryptase ratios were constructed by cloning α-and β-tryptase PCR products to generate artificial templates. Association analysis of asthma affection status and related phenotypes [total and allergen-specific serum IgE, bronchial hyperresponsiveness to methacholine, forced expiratory volume in 1s (FEV1) and atopy and asthma severity scores] was undertaken using family-based association tests (FBAT). Results Four consistent melting patterns for the α-tryptase genotype were identified with alleles carrying null, one or two copies of the α-tryptase allele. Possessing one copy of α-tryptase was significantly associated with lower serum levels of total and dust mite-specific IgE levels and higher FEV1 measurements, while two copies were related to higher serum concentrations of total and dust mite-specific IgE and greater atopy severity scores. Conclusions and Clinical Relevance Associations of α-tryptase copy number with serum IgE levels, atopy scores and bronchial function may reflect roles for tryptases in regulating IgE production and other processes in asthma.
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Affiliation(s)
- A M Abdelmotelb
- Clinical and Experimental Sciences Unit, Faculty of Medicine, University of Southampton, Southampton, UK; Faculty of Medicine, Tanta University, Tanta, Egypt
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20
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Morshed M, Hlushchuk R, Simon D, Walls AF, Obata-Ninomiya K, Karasuyama H, Djonov V, Eggel A, Kaufmann T, Simon HU, Yousefi S. NADPH oxidase-independent formation of extracellular DNA traps by basophils. J Immunol 2014; 192:5314-23. [PMID: 24771850 DOI: 10.4049/jimmunol.1303418] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Basophils are primarily associated with a proinflammatory and immunoregulatory role in allergic diseases and parasitic infections. Recent studies have shown that basophils can also bind various bacteria both in the presence and the absence of opsonizing Abs. In this report, we show that both human and mouse basophils are able to produce mitochondrial reactive oxygen species and to form extracellular DNA traps upon IL-3 priming and subsequent activation of the complement factor 5 a receptor or FcεRI. Such basophil extracellular traps (BETs) contain mitochondrial, but not nuclear DNA, as well as the granule proteins basogranulin and mouse mast cell protease 8. BET formation occurs despite the absence of any functional NADPH oxidase in basophils. BETs can be found in both human and mouse inflamed tissues, suggesting that they also play a role under in vivo inflammatory conditions. Taken together, these findings suggest that basophils exert direct innate immune effector functions in the extracellular space.
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Affiliation(s)
- Mahbubul Morshed
- Institute of Pharmacology, University of Bern, CH-3010 Bern, Switzerland
| | - Ruslan Hlushchuk
- Institute of Anatomy, University of Bern, CH-3012 Bern, Switzerland
| | - Dagmar Simon
- Department of Dermatology, Inselspital, Bern University Hospital, CH-3010 Bern, Switzerland
| | - Andrew F Walls
- Immunopharmacology Group, University of Southampton, Southampton General Hospital, Southampton SO16 6YD, United Kingdom
| | - Kazushige Obata-Ninomiya
- Department of Immune Regulation, Tokyo Medical and Dental University Graduate School of Medical and Dental Sciences, Tokyo 113-8518, Japan
| | - Hajime Karasuyama
- Department of Immune Regulation, Tokyo Medical and Dental University Graduate School of Medical and Dental Sciences, Tokyo 113-8518, Japan; Core Research for Evolutional Science and Technology, Japan Science and Technology Agency, Tokyo 113-8518, Japan; and
| | - Valentin Djonov
- Institute of Anatomy, University of Bern, CH-3012 Bern, Switzerland
| | - Alexander Eggel
- Institute of Immunology, University of Bern, Inselspital, CH-3010 Bern, Switzerland
| | - Thomas Kaufmann
- Institute of Pharmacology, University of Bern, CH-3010 Bern, Switzerland
| | - Hans-Uwe Simon
- Institute of Pharmacology, University of Bern, CH-3010 Bern, Switzerland
| | - Shida Yousefi
- Institute of Pharmacology, University of Bern, CH-3010 Bern, Switzerland;
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Abstract
Staining cells or tissues with basic dyes was the mainstay of mast cell and basophil detection methods for more than a century following the first identification of these cell types using such methods. These techniques have now been largely supplanted by immunohistochemical procedures with monoclonal antibodies directed against unique constituents of these cell types. Immunohistochemistry with antibodies specific for the granule protease tryptase provides a more sensitive and discriminating means for detecting mast cells than using the classical histochemical procedures; and employing antibodies specific for products of basophils (2D7 antigen and basogranulin) has allowed detection of basophils that infiltrate into tissues. The application of immunohistochemistry to detect more than one marker in the same cell has underpinned concepts of mast cell heterogeneity based on differential expression of chymase and other proteases. The double-labelling procedures employed have also provided a means for investigating the expression of cytokines and a range of other products. Protocols are here set out that have been used for immunohistochemical detection of mast cells and basophils and their subpopulations in human tissues. Consideration is given to pitfalls to avoid and to a range of alternative approaches.
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Affiliation(s)
- Andrew F Walls
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Mailpoint 837, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, UK,
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Hinks TSC, Zhou XY, Lum P, Staples KJ, Dimitrov B, Smith C, Ward J, Howarth PH, Walls AF, Gadola SD, Djukanovic R. S23 Multidimensional phenotypes of asthma. Thorax 2013. [DOI: 10.1136/thoraxjnl-2013-204457.30] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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23
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Zhou X, Sanchez-Munoz LB, Orfao A, Escribano L, Walls AF. High Serum Levels of Mast Cell Chymase and Carboxypeptidase in Mastocytosis. J Allergy Clin Immunol 2013. [DOI: 10.1016/j.jaci.2012.12.1523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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24
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Otsuka A, Ozaki M, Horiguchi Y, Murata Y, Kumano K, Nogami R, Goto M, Walls AF, Ishii N, Miyachi Y, Kabashima K. Basophils infiltrate the skin lesions in lepromatous leprosy. Acta Derm Venereol 2013; 93:88-9. [PMID: 22513483 DOI: 10.2340/00015555-1329] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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25
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Cerny-Reiterer S, Ghanim V, Hoermann G, Aichberger KJ, Herrmann H, Muellauer L, Repa A, Sillaber C, Walls AF, Mayerhofer M, Valent P. Identification of basophils as a major source of hepatocyte growth factor in chronic myeloid leukemia: a novel mechanism of BCR-ABL1-independent disease progression. Neoplasia 2012; 14:572-84. [PMID: 22904675 PMCID: PMC3421954 DOI: 10.1593/neo.12724] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Accepted: 06/25/2012] [Indexed: 11/18/2022]
Abstract
Chronic myeloid leukemia (CML) is a hematopoietic neoplasm characterized by the Philadelphia chromosome and the related BCR-ABL1 oncoprotein. Acceleration of CML is usually accompanied by basophilia. Several proangiogenic molecules have been implicated in disease acceleration, including the hepatocyte growth factor (HGF). However, little is known so far about the cellular distribution and function of HGF in CML. We here report that HGF is expressed abundantly in purified CML basophils and in the basophil-committed CML line KU812, whereas all other cell types examined expressed only trace amounts of HGF or no HGF. Interleukin 3, a major regulator of human basophils, was found to promote HGF expression in CML basophils. By contrast, BCR-ABL1 failed to induce HGF synthesis in CML cells, and imatinib failed to inhibit expression of HGF in these cells. Recombinant HGF as well as basophil-derived HGF induced endothelial cell migration in a scratch wound assay, and these effects of HGF were reverted by an anti-HGF antibody as well as by pharmacologic c-Met inhibitors. In addition, anti-HGF and c-Met inhibitors were found to suppress the spontaneous growth of KU812 cells, suggesting autocrine growth regulation. Together, HGF is a BCR-ABL1-independent angiogenic and autocrine growth regulator in CML. Basophils are a unique source of HGF in these patients and may play a more active role in disease-associated angiogenesis and disease progression than has so far been assumed. Our data also suggest that HGF and c-Met are potential therapeutic targets in CML.
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MESH Headings
- Basophils/drug effects
- Basophils/metabolism
- Cell Line, Tumor
- Cell Movement/genetics
- Cell Proliferation/drug effects
- Crizotinib
- Fusion Proteins, bcr-abl/genetics
- Fusion Proteins, bcr-abl/metabolism
- Gene Expression Regulation, Leukemic/drug effects
- Hepatocyte Growth Factor/genetics
- Hepatocyte Growth Factor/metabolism
- Hepatocyte Growth Factor/pharmacology
- Human Umbilical Vein Endothelial Cells/drug effects
- Human Umbilical Vein Endothelial Cells/metabolism
- Humans
- Interleukin-3/pharmacology
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
- Neoplastic Stem Cells/metabolism
- Piperidines/pharmacology
- Proto-Oncogene Proteins c-met/antagonists & inhibitors
- Proto-Oncogene Proteins c-met/genetics
- Pyrazoles
- Pyridines/pharmacology
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Affiliation(s)
- Sabine Cerny-Reiterer
- Ludwig Boltzmann Cluster Oncology, Vienna, Austria
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Viviane Ghanim
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Gregor Hoermann
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Karl J Aichberger
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | | | | | - Andreas Repa
- Department of Pediatrics and Adolescent Medicine, Medical University Vienna, Vienna, Austria
| | - Christian Sillaber
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Andrew F Walls
- Immunopharmacology Group, Southampton General Hospital, Southampton, UK
| | - Matthias Mayerhofer
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
- Department of Laboratory Medicine, Hanusch-Hospital Vienna, Vienna, Austria
| | - Peter Valent
- Ludwig Boltzmann Cluster Oncology, Vienna, Austria
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
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Böhm M, Apel M, Sugawara K, Brehler R, Jurk K, Luger TA, Haas H, Paus R, Eiz-Vesper B, Walls AF, Ponimaskin E, Gehring M, Kapp A, Raap U. Modulation of basophil activity: a novel function of the neuropeptide α-melanocyte-stimulating hormone. J Allergy Clin Immunol 2011; 129:1085-93. [PMID: 22178636 DOI: 10.1016/j.jaci.2011.11.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2010] [Revised: 11/09/2011] [Accepted: 11/09/2011] [Indexed: 11/20/2022]
Abstract
BACKGROUND Little is known about the effect of neuropeptides on basophils, which are important effector cells in immune and allergic responses. OBJECTIVE This study aimed at revealing the role of α-melanocyte-stimulating hormone (α-MSH) on basophil function. METHODS Expression of melanocortin receptors and proopiomelanocortin (POMC) was analyzed by means of RT-PCR, Western immunoblotting, fluorescence-activated cell sorting, and double-immunofluorescence analysis. Signal transduction studies included cyclic AMP and Ca(2+) mobilization assays. Basophil activity was assessed based on CD63 surface expression and cytokine release. RESULTS MC-1R expression was detectable in basophils isolated from human peripheral blood, as well as in basophils within nasal tissue. In isolated basophils from human blood, truncated POMC transcripts were present, but there was no POMC protein. Treatment of basophils with α-MSH increased intracellular Ca(2+) but not cyclic AMP levels. α-MSH at physiologic doses potently suppressed basophil activation induced by N-formyl-methionyl-leucyl-phenylalanine, phorbol 12-myristate 13-acetate, or grass pollen allergen in whole blood of healthy or allergic subjects, respectively. The effect of α-MSH on basophil activation was MC-1R mediated (as shown by blockade with a peptide analogue of agouti-signaling protein) and imitated by adrenocorticotropic hormone but not elicited by the tripeptides KPV and KdPT, both of which lack the central pharmacophore of α-MSH. Moreover, α-MSH at physiologic doses significantly suppressed secretion of 3 proallergic cytokines, IL-4, IL-6, and IL-13, in basophils stimulated with anti-IgE, N-formyl-methionyl-leucyl-phenylalanine, or phorbol 12-myristate 13-acetate. CONCLUSION Our findings highlight a novel functional activity of α-MSH, which acts as a natural antiallergic basophil-response modifier. These findings might point to novel therapeutic strategies in treating allergic diseases.
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Affiliation(s)
- Markus Böhm
- Department of Dermatology, University of Münster, Münster, Germany.
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Abstract
BACKGROUND Basophils are blood leukocytes constituting less than 1% of leukocytes. They share morphological and functional similarities with mast cells, but recent studies indicate that basophils play non-redundant roles via the release of several cytokines and lipid mediators, as well as functioning as antigen presenting cells. However, basophil infiltration into the tissues in human skin diseases remains to be addressed. METHODS The infiltration of basophils in 24 skin diseases (136 samples) was immunohistochemically analyzed using basophil-specific BB1 antibody. In addition, activation of blood basophils was examined by assessing CD203c expression with flow cytometry. RESULTS Basophils were detected in skin lesions of atopic dermatitis, prurigo, urticaria, bullous pemphigoid, drug eruptions, eosinophilic pustular folliculitis, insect bites, scabies, Henoch-Schönlein purpura and dermatomyositis. While cell densities in urticaria, bullous pemphigoid and eosinophilic pustular folliculitis were prominent, much lower numbers of basophils were seen in lesional skin of atopic dermatitis. Basophils were entirely absent in psoriasis vulgaris, mastocytosis, tumoral lesions, systemic sclerosis, and systemic lupus erythematosus. Levels of CD203c expression on blood basophils from prurigo and urticaria patients were higher than those from healthy donors. CONCLUSIONS Basophils infiltrate into skin lesions more commonly than previously thought, and thus they may play important roles in a variety of inflammatory skin diseases.
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Affiliation(s)
- Y Ito
- Department of Dermatology, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
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28
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Korkmaz B, Jégot G, Lau LC, Thorpe M, Pitois E, Juliano L, Walls AF, Hellman L, Gauthier F. Discriminating between the activities of human cathepsin G and chymase using fluorogenic substrates. FEBS J 2011; 278:2635-46. [PMID: 21599834 DOI: 10.1111/j.1742-4658.2011.08189.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cathepsin G (CG) (EC 3.4.21.20) and chymase (EC 3.4.21.39) are two closely-related chymotrypsin-like proteases that are released from cytoplasmic granules of activated mast cells and/or neutrophils. We investigated the potential for their substrate-binding subsites to discriminate between their substrate specificities, aiming to better understand their respective role during the progression of inflammatory diseases. In addition to their preference for large aromatic residues at P1, both preferentially accommodate small hydrophilic residues at the S1' subsite. Despite significant structural differences in the S2' subsite, both prefer an acidic residue at that position. The Ala226/Glu substitution at the bottom of the CG S1 pocket, which allows CG but not chymase to accommodate a Lys residue at P1, is the main structural difference, allowing discrimination between the activities of these two proteases. However, a Lys at P1 is accommodated much less efficiently than a Phe, and the corresponding substrate is cleaved by β2-tryptase (EC 3.4.21.59). We optimized a P1 Lys-containing substrate to enhance sensitivity towards CG and prevent cleavage by chymase and β2-tryptase. The resulting substrate (ABZ-GIEPKSDPMPEQ-EDDnp) [where ABZ is O-aminobenzoic acid and EDDnp is N-(2,4-dinitrophenyl)-ethylenediamine] was cleaved by CG but not by chymase and tryptase, with a specificity constant of 190 mM(-1)·s(-1). This allows the quantification of active CG in cells or tissue extracts where it may be present together with chymase and tryptase, as we have shown using a HMC-1 cell homogenate and a sputum sample from a patient with severe asthma.
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Affiliation(s)
- Brice Korkmaz
- Unité INSERM U-618 Protéases et Vectorisation pulmonaires, Université François Rabelais de Tours, Tours, France.
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29
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Majtan J, Kumar P, Majtan T, Walls AF, Klaudiny J. Effect of honey and its major royal jelly protein 1 on cytokine and MMP-9 mRNA transcripts in human keratinocytes. Exp Dermatol 2011; 19:e73-9. [PMID: 19845754 DOI: 10.1111/j.1600-0625.2009.00994.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Honey has been used since ancient times as a remedy in wound healing. However, even though the results from randomized clinical trials document that honey accelerates wound healing, no study dealing with its influence on human skin cells (epidermal keratinocytes and dermal fibroblast) has been performed. We demonstrate that keratinocytes, which are known to be involved in wound healing, are responsible for elevated production of mediators including cytokines (TNF-alpha, IL-1beta and TGF-beta) and matrix metalloproteinase-9 (MMP-9) after incubation with honey. Real-time PCR was performed for the quantification of mRNA level of selected cytokines and MMP-9. Furthermore, we show that the increased level of MMP-9 in the epidermis following incubation with honey leads to degradation of type IV collagen in the basement membrane. These data indisputably demonstrate that honey activates keratinocytes and support the findings that honey may accelerate wound healing process.
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Affiliation(s)
- Juraj Majtan
- Institute of Zoology, Slovak Academy of Sciences, Bratislava, Slovakia.
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Teodosio C, García-Montero AC, Jara-Acevedo M, Sánchez-Muñoz L, Alvarez-Twose I, Núñez R, Schwartz LB, Walls AF, Escribano L, Orfao A. Mast cells from different molecular and prognostic subtypes of systemic mastocytosis display distinct immunophenotypes. J Allergy Clin Immunol 2010; 125:719-26, 726.e1-726.e4. [PMID: 20061010 DOI: 10.1016/j.jaci.2009.10.020] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2009] [Revised: 10/19/2009] [Accepted: 10/20/2009] [Indexed: 02/04/2023]
Abstract
BACKGROUND Systemic mastocytosis (SM) is a heterogeneous group of disorders with distinct clinical and biological behavior. Despite this, little is known about the immunophenotypic features of the distinct diagnostic categories of SM. OBJECTIVE To analyze the immunophenotypic characteristics of bone marrow (BM) mast cells (MCs) of different subtypes of SM. METHODS Bone marrow samples from 123 patients with different subtypes of SM and 92 controls were analyzed for a broad panel of immunophenotypic markers by flow cytometry. RESULTS Three clearly different maturation-associated immunophenotypic profiles were found for BMMCs in SM. These different profiles were associated with both genetic markers of the disease and its clinical behavior. BMMCs from poor-prognosis categories of SM (aggressive SM and MC leukemia) typically showed an immature phenotype with clonal involvement of all myeloid lineages by the D816V stem cell growth factor receptor gene (KIT) mutation. In turn, a mature activated versus resting BMMC immunophenotype was commonly found among patients with good-prognosis subtypes of SM depending on whether they carried (indolent SM and clonal MC activation disorders) or not (well differentiated SM) the D816V KIT mutation. CONCLUSION Bone marrow MCs from SM show 3 different maturation-related immunophenotypic profiles that are associated with both the genetic markers of the disease and its clinical behavior.
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Affiliation(s)
- Cristina Teodosio
- Servicio General de Citometría, Instituto de Biología Molecular y Celular del Cáncer, Centro de Investigación del Cáncer/IBMCC (CSIC-USAL) and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain
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31
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Pallett DW, Soh E, Edwards ML, Bodey K, Lau LCK, Cooper JI, Howarth PH, Walls AF, Wang H. Proof of concept pilot study: prevalence of grass virus infection and the potential for effects on the allergenic potency of pollen. Environ Health 2009; 8 Suppl 1:S10. [PMID: 20102577 PMCID: PMC2796488 DOI: 10.1186/1476-069x-8-s1-s10] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
BACKGROUND Wild plants harbour a variety of viruses and these have the potential to alter the composition of pollen. The potential consequences of virus infection of grasses on pollen-induced allergic disease are not known. METHODS We have collected pollen from Dactylis glomerata (cocksfoot; a grass species implicated as a trigger of allergic rhino-conjunctivitis) from Wytham Wood, Oxfordshire UK. Extracts were prepared from pollen from uninfected grass, and from grass naturally infected by the Cocksfoot streak potyvirus (CSV). Preparations of pollen from virus-infected and non-infected grasses were employed in skin testing 15 grass pollen-allergic subjects with hayfever. Allergen profiles of extracts were investigated by Western blotting for IgE with sera from allergic subjects. RESULTS The prevalence of CSV infection in cocksfoot grasses sampled from the study site varied significantly over an eight-year period, but infection rates of up to 70% were detected. Virus infection was associated with small alterations in the quantities of pollen proteins detected by polyacrylamide gel electrophoresis, and in the patterns of allergens identified by Western blotting with IgE from grass pollen allergic subjects. For individual subjects there were differences in potencies of standardised extracts of pollen from virus-free and virus-infected plants as assessed by skin testing, though a consistent pattern was not established for the group of 15 subjects. CONCLUSION Infection rates for CSV in cocksfoot grass can be high, though variable. Virus-induced alterations in components of grass pollen have the potential to alter the allergenic potency.
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Affiliation(s)
- Denise W Pallett
- NERC/Centre for Ecology and Hydrology Oxford, Mansfield Road, Oxford, OX1 3SR, UK
| | - Emily Soh
- Infection Inflammation and Immunity Division, Mailpoint 837, Southampton General Hospital, Southampton SO16 6YD, UK
| | - Mary-Lou Edwards
- NERC/Centre for Ecology and Hydrology Oxford, Mansfield Road, Oxford, OX1 3SR, UK
| | - Kathleen Bodey
- Infection Inflammation and Immunity Division, Mailpoint 837, Southampton General Hospital, Southampton SO16 6YD, UK
| | - Laurie CK Lau
- Infection Inflammation and Immunity Division, Mailpoint 837, Southampton General Hospital, Southampton SO16 6YD, UK
| | - J Ian Cooper
- NERC/Centre for Ecology and Hydrology Oxford, Mansfield Road, Oxford, OX1 3SR, UK
| | - Peter H Howarth
- Infection Inflammation and Immunity Division, Mailpoint 837, Southampton General Hospital, Southampton SO16 6YD, UK
| | - Andrew F Walls
- Infection Inflammation and Immunity Division, Mailpoint 837, Southampton General Hospital, Southampton SO16 6YD, UK
| | - Hui Wang
- NERC/Centre for Ecology and Hydrology Oxford, Mansfield Road, Oxford, OX1 3SR, UK
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32
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Harper NJN, Dixon T, Dugué P, Edgar DM, Fay A, Gooi HC, Herriot R, Hopkins P, Hunter JM, Mirakian R, Pumphrey RSH, Seneviratne SL, Walls AF, Williams P, Wildsmith JA, Wood P, Nasser AS, Powell RK, Mirakhur R, Soar J. Suspected anaphylactic reactions associated with anaesthesia. Anaesthesia 2009; 64:199-211. [PMID: 19143700 PMCID: PMC3082210 DOI: 10.1111/j.1365-2044.2008.05733.x] [Citation(s) in RCA: 212] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Affiliation(s)
- N J N Harper
- British Society for Allergy and Clinical Immunology
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33
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Matsuda A, Okayama Y, Ebihara N, Yokoi N, Hamuro J, Walls AF, Ra C, Hopkin JM, Kinoshita S. Hyperexpression of the high-affinity IgE receptor-beta chain in chronic allergic keratoconjunctivitis. Invest Ophthalmol Vis Sci 2009; 50:2871-7. [PMID: 19136704 DOI: 10.1167/iovs.08-3022] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE Although the existence of Fc(epsilon)RI-alphabetagamma(2) and Fc(epsilon)RI-alphagamma(2) receptor subtypes was reported, there has been no direct evidence of these two subtypes of Fc(epsilon)RI in vivo. To investigate the existence of these two subtypes of Fc(epsilon)RI in vivo, the authors evaluated the expression of Fc(epsilon)RI-beta in the giant papillae of chronic allergic conjunctivitis and compared the expression level of Fc(epsilon)RI-beta with control conjunctivae using the anti-human Fc(epsilon)RI-beta antibody. METHODS Fc(epsilon)RI-beta expression in giant papillae obtained from patients with atopic keratoconjunctivitis and vernal keratoconjunctivitis in control conjunctivae was evaluated by immunohistochemistry using anti-Fc(epsilon)RI-beta, -alpha, -gamma, and anti-human mast cell tryptase, anti-chymase, anti-basophil, and anti-CD1a antibodies. RESULTS Statistical analyses revealed that the densities of Fc(epsilon)RI-beta(+) cells, Fc(epsilon)RI-alpha(+) cells, tryptase(+) cells, and Fc(epsilon)RI-beta(+)/tryptase(+) cells were significantly increased in giant papillae compared with controls. There were two types of Fc(epsilon)RI (alphabetagamma(2) and alphagamma(2)) on the mast cells of the giant papillae. The ratio of the Fc(epsilon)RI-beta(+) cell number/Fc(epsilon)RI-alpha(+) cell number in the giant papillae (0.69 +/- 0.08 [mean +/- SD]) was significantly higher than that of the controls (0.07 +/- 0.16). Fc(epsilon)RI-beta/tryptase double immunostaining revealed that 81% +/- 13% of tryptase(+) cells expressed Fc(epsilon)RI-beta. Fc(epsilon)RI-beta(+) cells were preferentially localized within and around epithelial tissue. The authors also found that Fc(epsilon)RI-beta was expressed by basophils but not by Fc(epsilon)RI-alphagamma(2)-positive Langerhans cells in the giant papillae samples. CONCLUSIONS Preferential Fc(epsilon)RI-beta expression observed in the mast cells and basophils of giant papillae suggests important roles of Fc(epsilon)RI-beta in the pathophysiology of atopic keratoconjunctivitis and vernal keratoconjunctivitis.
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Affiliation(s)
- Akira Matsuda
- Department of Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto, Japan.
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35
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Simons FER, Frew AJ, Ansotegui IJ, Bochner BS, Golden DBK, Finkelman FD, Leung DYM, Lotvall J, Marone G, Metcalfe DD, Müller U, Rosenwasser LJ, Sampson HA, Schwartz LB, van Hage M, Walls AF. Practical allergy (PRACTALL) report: risk assessment in anaphylaxis. Allergy 2008; 63:35-7. [PMID: 18053014 DOI: 10.1111/j.1398-9995.2007.01605.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Effector mechanisms in anaphylaxis were reviewed. Current approaches to confirmation of the clinical diagnosis were discussed. Improved methods for distinguishing between allergen sensitization (which is common in the general population) and clinical risk of anaphylaxis (which is uncommon) were deliberated. Innovative techniques that will improve risk assessment in anaphylaxis in the future were described.
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Affiliation(s)
- F E R Simons
- Department of Pediatrics & Child Health, University of Manitoba, Winnipeg, MB, Canada
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36
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Simons FER, Frew AJ, Ansotegui IJ, Bochner BS, Golden DBK, Finkelman FD, Leung DYM, Lotvall J, Marone G, Metcalfe DD, Müller U, Rosenwasser LJ, Sampson HA, Schwartz LB, van Hage M, Walls AF. Risk assessment in anaphylaxis: current and future approaches. J Allergy Clin Immunol 2007; 120:S2-24. [PMID: 17602945 DOI: 10.1016/j.jaci.2007.05.001] [Citation(s) in RCA: 161] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2007] [Revised: 05/01/2007] [Accepted: 05/04/2007] [Indexed: 10/23/2022]
Abstract
Risk assessment of individuals with anaphylaxis is currently hampered by lack of (1) an optimal and readily available laboratory test to confirm the clinical diagnosis of an anaphylaxis episode and (2) an optimal method of distinguishing allergen-sensitized individuals who are clinically tolerant from those at risk for anaphylaxis episodes after exposure to the relevant allergen. Our objectives were to review the effector mechanisms involved in the pathophysiology of anaphylaxis; to explore the possibility of developing an optimal laboratory test to confirm the diagnosis of an anaphylaxis episode, and the possibility of improving methods to distinguish allergen sensitization from clinical reactivity; and to develop a research agenda for risk assessment in anaphylaxis. Researchers from the American Academy of Allergy, Asthma & Immunology and the European Academy of Allergology and Clinical Immunology held a PRACTALL (Practical Allergy) meeting to discuss these objectives. New approaches being investigated to support the clinical diagnosis of anaphylaxis include serial measurements of total tryptase in serum during an anaphylaxis episode, and measurement of baseline total tryptase levels after the episode. Greater availability of the test for mature beta-tryptase, a more specific mast cell activation marker for anaphylaxis than total tryptase, is needed. Measurement of chymase, mast cell carboxypeptidase A3, platelet-activating factor, and other mast cell products may prove to be useful. Consideration should be given to measuring a panel of mediators from mast cells and basophils. New approaches being investigated to help distinguish sensitized individuals at minimum or no risk from those at increased risk of developing anaphylaxis include measurement of the ratio of allergen-specific IgE to total IgE, determination of IgE directed at specific allergenic epitopes, measurement of basophil activation markers by using flow cytometry, and assessment of allergen-specific cytokine responses. Algorithms have been developed for risk assessment of individuals with anaphylaxis, along with a research agenda for studies that could lead to an improved ability to confirm the clinical diagnosis of anaphylaxis and to identify allergen-sensitized individuals who are at increased risk of anaphylaxis.
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Affiliation(s)
- F Estelle R Simons
- Department of Pediatrics and Child Health, University of Manitoba, Winnipeg, Canada, and Department of Respiratory Medicine, Brighton General Hospital, Belfast, UK.
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Mäyränpää MI, Heikkilä HM, Lindstedt KA, Walls AF, Kovanen PT. Desquamation of human coronary artery endothelium by human mast cell proteases: implications for plaque erosion. Coron Artery Dis 2007; 17:611-21. [PMID: 17047445 DOI: 10.1097/01.mca.0000224420.67304.4d] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Endothelial erosion has emerged as an important contributor to the pathogenesis of atherosclerosis and its complications, but the molecular mechanisms have remained unclear. As activated mast cells capable of secreting neutral proteases are present in the intima of eroded coronary plaques, we investigated their potential roles in endothelial erosion. METHODS AND RESULTS Studies involving double immunostaining of mast cells (tryptase(pos) cells) and platelets (CD42b) in human coronary artery specimens indicated that the number of subendothelial mast cells correlated with the number of parietal microthrombi (P=0.001, rs 0.27). The number of parietal microthrombi was significantly higher (P<0.001) in areas of plaques than in areas of healthy intima. Of the microthrombi 86% were in the lesional coronary segments, of all subendothelial mast cells 15% were located under parietal microthrombi, and of all parietal microthrombi 49% were located over subendothelial mast cells. Double immunostaining revealed the mast cell to neutrophil ratio in the human coronary artery intima to be 5 : 1, and that mast cells are a major local source of cathepsin G. Scanning electron and light microscopy indicated that treatment of fresh human coronary arteries intraluminally with recombinant human (rh)-tryptase and rh-chymase induced endothelial damage characterized by retraction of endothelial cells, disruption of endothelial cell to cell adhesions and desquamation of endothelial cells. VE-cadherin and fibronectin, which are necessary for cell-cell interactions and endothelial cell adhesion, were degraded by tryptase and chymase and also by cathepsin G. CONCLUSIONS Activated subendothelial mast cells may contribute to endothelial erosion by releasing proteases capable of degrading VE-cadherin and fibronectin.
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Affiliation(s)
- Mikko I Mäyränpää
- Wihuri Research Institute, University of Helsinki, Helsinki, Finland
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de Paulis A, Prevete N, Fiorentino I, Rossi FW, Staibano S, Montuori N, Ragno P, Longobardi A, Liccardo B, Genovese A, Ribatti D, Walls AF, Marone G. Expression and functions of the vascular endothelial growth factors and their receptors in human basophils. J Immunol 2007; 177:7322-31. [PMID: 17082651 DOI: 10.4049/jimmunol.177.10.7322] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Angiogenesis is a multistep complex phenomenon critical for several inflammatory and neoplastic disorders. Basophils, normally confined to peripheral blood, can infiltrate the sites of chronic inflammation. In an attempt to obtain insights into the mechanism(s) underlying human basophil chemotaxis and its role in inflammation, we have characterized the expression and function of vascular endothelial growth factors (VEGFs) and their receptors in these cells. Basophils express mRNA for three isoforms of VEGF-A (121, 165, and 189) and two isoforms of VEGF-B (167 and 186). Peripheral blood and basophils in nasal polyps contain VEGF-A localized in secretory granules. The concentration of VEGF-A in basophils was 144.4 +/- 10.8 pg/10(6) cells. Immunologic activation of basophils induced the release of VEGF-A. VEGF-A (10-500 ng/ml) induced basophil chemotaxis. Supernatants of activated basophils induced an angiogenic response in the chick embryo chorioallantoic membrane that was inhibited by an anti-VEGF-A Ab. The tyrosine kinase VEGFR-2 (VEGFR-2/KDR) mRNA was expressed in basophils. These cells also expressed mRNA for the soluble form of VEGFR-1 and neuropilin (NRP)1 and NRP2. Flow cytometric analysis indicated that basophils express epitopes recognized by mAbs against the extracellular domains of VEGFR-2, NRP1, and NRP2. Our data suggest that basophils could play a role in angiogenesis and inflammation through the expression of several forms of VEGF and their receptors.
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Affiliation(s)
- Amato de Paulis
- Divisione di Immunologia Clinica ed Allergologia e Centro Interdipartimentale di Ricerca di Scienze Immunologiche di Base e Cliniche. Università di Napoli Federico II, Naples, Italy
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Abe K, Aslam A, Walls AF, Sato T, Inoue H. Up-regulation of protease-activated receptor-2 by bFGF in cultured human synovial fibroblasts. Life Sci 2006; 79:898-904. [PMID: 16687155 DOI: 10.1016/j.lfs.2006.03.034] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2005] [Revised: 11/25/2005] [Accepted: 03/06/2006] [Indexed: 11/28/2022]
Abstract
Protease-activated receptors (PARs) have been implicated in the development of acute and chronic inflammatory responses. We have examined the expression of mRNA for PARs and their regulation by growth factors and cytokines in synovial fibroblasts derived from patients with rheumatoid arthritis (RA). Messenger RNA for PAR-1, -2 and -3 was detected in these cells, but not that for PAR-4. Expression of mRNA for PAR-2 was up-regulated by bFGF in a concentration-dependent manner, whereas expression of mRNA for PAR-1 and PAR-3 was not affected. Levels of mRNA encoding PAR-1, PAR-2 and PAR-3 did not increase in response to IL-1beta and TNF-alpha. Expression of mRNA for PAR-2 was maximal 12 h after addition of bFGF, and maximal levels of immunoreactive PAR-2 were reached after 24 h. Furthermore, PAR-2 agonist peptide (SLIGKV-NH(2)), but not the inactive reverse peptide (VKGILS-NH(2)), induced transitory cytosolic Ca(2+) mobilization in cells, and its response was increased by pretreatment with bFGF. An important role could be played by bFGF in the regulation of functional PAR-2 expression in cultured RA synovial fibroblasts.
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Affiliation(s)
- Kazuki Abe
- Pharmacological Research Department, Minophagen Pharmaceutical Co.,2-2-3, Komatsubara, Zama-shi, Kanagawa-228-0002, Japan
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de Nadaï P, Chenivesse C, Gilet J, Porte H, Vorng H, Chang Y, Walls AF, Wallaert B, Tonnel AB, Tsicopoulos A, Zerwes HG. CCR5 usage by CCL5 induces a selective leukocyte recruitment in human skin xenografts in vivo. J Invest Dermatol 2006; 126:2057-64. [PMID: 16778803 DOI: 10.1038/sj.jid.5700369] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
CCR5 is one of the major inflammatory chemokine receptors with potential therapeutical applications in humans. However, the redundancy of chemokines and their receptors, and the species specificity of chemokine receptor antagonists pose challenges to understanding of the role they play in pharmacological situations. To address this question, we used a humanized severe combined immunodeficient mouse model grafted with human skin and autologous leukocytes, and evaluated the effect of a blocking antibody against human CCR5, on CCL5-induced cutaneous leukocyte recruitment in vivo. At baseline, CCL5 induced a significant recruitment of T cells mainly of the memory phenotype, of monocytes/macrophages, eosinophils, and IFN-gamma(+) but not IL-4(+) and IL-5(+) cells. In vivo, anti-CCR5 antibody was able to almost completely inhibit the recruitment of monocytes/macrophages and T-helper (Th)1-type cells to inhibit partially the attraction of memory T cells, but had no effect on eosinophil infiltration, although all these cell types express other CCL5 binding chemokine receptors than CCR5. These results indicate that the in vivo environment regulates target cell specificity of CCL5 leading to differential cell recruitment, suggesting that antagonizing CCR5 receptor may be of therapeutic value in diseases such as acquired immuno deficiency syndrome, where CCL5/CCR5, monocytes, and Th1-type cells play a predominant role.
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Bradding P, Walls AF, Holgate ST. The role of the mast cell in the pathophysiology of asthma. J Allergy Clin Immunol 2006; 117:1277-84. [PMID: 16750987 DOI: 10.1016/j.jaci.2006.02.039] [Citation(s) in RCA: 391] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2006] [Revised: 02/16/2006] [Accepted: 02/28/2006] [Indexed: 12/13/2022]
Abstract
There is compelling evidence that human mast cells contribute to the pathophysiology of asthma. Mast cells, but not T cells or eosinophils, localize within the bronchial smooth muscle bundles in patients with asthma but not in normal subjects or those with eosinophilic bronchitis, a factor likely to be important in determining the asthmatic phenotype. The mechanism of mast cell recruitment by asthmatic airway smooth muscle involves the CXCL10/CXCR3 axis, and several mast cell mediators have profound effects on airway smooth muscle function. The autacoids are established as potent bronchoconstrictors, whereas the proteases tryptase and chymase are being demonstrated to have a range of actions consistent with key roles in inflammation, tissue remodeling, and bronchial hyperresponsiveness. IL-4 and IL-13, known mast cell products, also induce bronchial hyperresponsiveness in the mouse independent of the inflammatory response and enhance the magnitude of agonist-induced intracellular Ca2+ responses in cultured human airway smooth muscle. There are therefore many pathways by which the close approximation of mast cells with airway smooth muscle cells might lead to disordered airway smooth muscle function. Mast cells also infiltrate the airway mucous glands in subjects with asthma, showing features of degranulation, and a positive correlation with the degree of mucus obstructing the airway lumen, suggesting that mast cells play an important role in regulating mucous gland secretion. The development of potent and specific inhibitors of mast cell secretion, which remain active when administered long-term to asthmatic airways, should offer a novel approach to the treatment of asthma.
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Affiliation(s)
- Peter Bradding
- Division of Respiratory Medicine, Institute for Lung Health, University of Leicester Medical School, Leicester, United Kingdom.
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Agis H, Krauth MT, Böhm A, Mosberger I, Müllauer L, Simonitsch-Klupp I, Walls AF, Horny HP, Valent P. Identification of basogranulin (BB1) as a novel immunohistochemical marker of basophils in normal bone marrow and patients with myeloproliferative disorders. Am J Clin Pathol 2006; 125:273-81. [PMID: 16393678 DOI: 10.1309/m9fq-mqgf-6616-7n2x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2022] Open
Abstract
In myeloproliferative disorders (MPDs), basophils typically increase in number in the bone marrow (BM) and blood. In chronic myeloid leukemia (CML), basophilia is a diagnostic and prognostic variable. However, no reliable approach for routine detection and enumeration of basophils in BM sections is available. We applied the antibasogranulin antibody BB1 on paraffin-embedded BM sections in 21 control samples (normal BM), 45 patients with CML, 9 with chronic idiopathic myelofibrosis, 11 with polycythemia vera, 19 with essential thrombocythemia, and 7 with indolent systemic mastocytosis. As assessed by immunostaining of serial BM sections, BB1+ cells coexpressed myeloperoxidase, histidine decarboxylase, and leukosialin but did not express B- or T-cell-restricted antigens. BB1+ BM cells were found to be highly elevated in patients with CML compared with normal BM or other MPDs, with maximum counts found in accelerated phase CML (median, 160 cells/mm(2)). In summary, BB1 (basogranulin) is a new immunohistochemical basophil marker that should allow quantification of basophils in CML at diagnosis and during therapy.
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Affiliation(s)
- Hermine Agis
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
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Agis H, Krauth MT, Böhm A, Mosberger I, Müllauer L, Simonitsch-Klupp I, Walls AF, Horny HP, Valent P. Identification of Basogranulin (BB1) as a Novel Immunohistochemical Marker of Basophils in Normal Bone Marrow and Patients With Myeloproliferative Disorders. Am J Clin Pathol 2006. [DOI: 10.1309/m9fqmqgf66167n2x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Iwanaga T, McEuen A, Walls AF, Clough JB, Keith TP, Rorke S, Barton SJ, Holgate ST, Holloway JW. Polymorphism of the mast cell chymase gene (CMA1) promoter region: lack of association with asthma but association with serum total immunoglobulin E levels in adult atopic dermatitis. Clin Exp Allergy 2004; 34:1037-42. [PMID: 15248847 DOI: 10.1111/j.1365-2222.2004.02000.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
BACKGROUND Mast cell chymase has the potential to be an important mediator of inflammation and remodelling in the asthmatic lung. Previous studies have examined association between promoter polymorphism of the chymase gene (CMA1) and allergic phenotypes but the significance of this polymorphism is unclear. We have examined association of a CMA1 variant in relation to asthma in a large UK Caucasian family cohort. METHODS A polymorphism of the CMA1 gene promoter (-1903G/A) was genotyped in 341 asthmatic families and in 184 non-asthmatic adults recruited from the UK PCR-RFLP based genotyping. Association with asthma diagnosis, atopy, specific and total IgE, and atopy and asthma severity was examined. RESULTS Case-control studies did not reveal a significant difference in allele frequency between asthmatics and controls. A significant association was found between CMA1 genotypes and total IgE levels in subjects with self-reported eczema that remained significant after correction for multiple testing (median total serum IgE GG 297 kU/L, GA 144 kU/L, AA 48.4 kU/L, Pc=0.0032). CONCLUSION These data suggest that CMA1 promoter polymorphism does not contribute to asthma susceptibility or severity but may be involved in regulating IgE levels in patients with eczema.
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Affiliation(s)
- T Iwanaga
- Division of Human Genetics, School of Medicine, University of Southampton, Southampton General Hospital, Southhampton, UK.
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de Paulis A, Prevete N, Fiorentino I, Walls AF, Curto M, Petraroli A, Castaldo V, Ceppa P, Fiocca R, Marone G. Basophils Infiltrate Human Gastric Mucosa at Sites of Helicobacter pylori Infection, and Exhibit Chemotaxis in Response to H. pylori-derived Peptide Hp(2–20). J Immunol 2004; 172:7734-43. [PMID: 15187157 DOI: 10.4049/jimmunol.172.12.7734] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Basophils, which are normally confined to the circulation, can migrate to sites of allergic inflammation. Using the specific mAb, BB1, we detected basophil infiltration of the gastric mucosa of Helicobacter pylori-infected patients affected by moderate and severe gastritis. Basophils were not found in H. pylori-free individuals or in subjects with mild gastritis. The H. pylori-derived peptide, Hp(2-20), was a potent basophil chemoattractant in vitro, whereas the control peptide, Hp1, was ineffective. Basophils from peripheral blood of healthy volunteers expressed mRNA for the formyl peptide receptors, N-formyl-peptide receptor (FPR), FPR-like (FPRL)1, and FPRL2. Preincubation of basophils with FMLP or Hp(2-20) caused complete desensitization to a subsequent challenge with homologous stimulus. Incubation of basophils with a low concentration of FMLP, which binds with high affinity to FPR, but not to FPRL1 or FPRL2, did not affect the chemotactic response to Hp(2-20). In contrast, a high concentration of FMLP, which binds to FPRL1 and FPRL2, reduced the chemotactic response to Hp(2-20). The FPR antagonist, cyclosporin H, prevented chemotaxis induced by FMLP, but not by Hp(2-20). Hp(2-20) could be responsible, at least in part, for basophil infiltration of the gastric mucosa of H. pylori-infected patients presumably through the interaction with FPRL1 and FPRL2.
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Affiliation(s)
- Amato de Paulis
- Department of Clinical Immunology and Allergy, University of Naples Federico II, Via S. Pansini 5, 80131 Naples, Italy
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Tsicopoulos A, Shimbara A, de Nadai P, Aldewachi O, Lamblin C, Lassalle P, Walls AF, Sénéchal S, Levitt RC, Darras J, Hamid Q, Wallaert B. Involvement of IL-9 in the bronchial phenotype of patients with nasal polyposis. J Allergy Clin Immunol 2004; 113:462-9. [PMID: 15007348 DOI: 10.1016/j.jaci.2003.12.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND Nasal polyposis (NP) is frequently associated with asthma. In this disease, asymptomatic bronchial hyperresponsiveness (BHR) is thought to precede the development of asthma. IL-9 and its receptor have been reported as candidate genes for asthma and to be associated with BHR. OBJECTIVE The objective of this study was to assess the contribution of 11-9 to the pathogenesis of BHR in NP by comparing the expression of IL-9 and its receptor in bronchial biopsy specimens from three groups of patients with NP: NP without BHR, NP with asymptomatic BHR, and NP with BHR and asthma. METHODS Bronchial biopsy specimens were examined in terms of cellular infiltration and in terms of expression of IL-9 protein and mRNA as well as of its receptor by using immunohistochemistry and in situ hybridization. RESULTS Patients with NP with asthma as compared with the two other groups exhibited an increased bronchial infiltration of basophils, eosinophils, and T cells that correlated with the asthma score. The two groups of patients with NP with BHR showed an increased expression in IL-9 protein and mRNA as well as an increase in the expression of IL-9R mRNA at the epithelial level. These modifications were inversely correlated with the airway responsiveness to methacholine, producing a 20% fall in FEV1. There was a close association between IL-9+ cells, IL-5 mRNA expression, and eosinophil infiltration that correlated with each other. CONCLUSIONS These results suggest an important role for IL-9 in the pathogenesis of BHR and a causal relation between IL-9 and the development of bronchial eosinophilia in asthma.
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Beil WJ, McEuen AR, Schulz M, Wefelmeyer U, Kraml G, Walls AF, Jensen-Jarolim E, Pabst R, Pammer J. Selective alterations in mast cell subsets and eosinophil infiltration in two complementary types of intestinal inflammation: ascariasis and Crohn's disease. Pathobiology 2004; 70:303-13. [PMID: 12865626 DOI: 10.1159/000071270] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2002] [Accepted: 12/08/2002] [Indexed: 01/08/2023] Open
Abstract
OBJECTIVE Numbers of mast cells (MCs) of different subpopulations and the extent of eosinophil infiltration were compared in Crohn's disease and ascariasis. These two types of intestinal inflammation are complementary with regard to T cell response (TH1 versus TH2), prevalence and environmental factors. METHODS Histochemical, immunohistochemical and ultrastructural tools were applied to biopsies of morphologically uninvolved colon, ileum and duodenum from Crohn's and ascariasis patients, as well as resection margins and tissues from an experimental porcine ascariasis model. MC subsets were defined by their dye-binding properties, and their chymase content was analysed using biochemical tools. RESULTS The TH2 (IgE-mediated) response in ascariasis was characterised by a dramatic increase in mucosal- type MCs (MMCs) and eosinophils in both the mucosa and the deeper layers of the intestinal wall and a simultaneous decrease of connective tissue-type MCs (CTMCs). Uninvolved intestine of Crohn's patients showed moderate proliferation of CTMCs in the deeper layers of the intestinal wall, but a significant decrease of the MMCs, associated with moderate eosinophilia in all layers of the gut. Similar changes were present in the uninvolved duodenum of Crohn's patients. Comparable amounts of chymase could be extracted from mucosal and submucosal duodenum, with similar proportions of its two principal isoforms in each. CONCLUSIONS Our results indicate that T cell responses (TH1 or TH2) are associated with different MC subsets in intestinal inflammation. Changes remote from the focus of inflammation point to the systemic nature of the different MC responses.
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Affiliation(s)
- Waltraud J Beil
- Institute of Pathology, University of Vienna Medical School, Vienna, Austria.
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Powe DG, Huskisson RS, Carney AS, Jenkins D, McEuen AR, Walls AF, Jones NS. Mucosal T-cell phenotypes in persistent atopic and nonatopic rhinitis show an association with mast cells. Allergy 2004; 59:204-12. [PMID: 14763935 DOI: 10.1046/j.1398-9995.2003.00315.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Allergic rhinitis is characterized by selective expansion of T cell subsets with a CD4+ phenotype. Recently, we identified a subpopulation of nonallergic rhinitis subjects with increased epithelial mast cell and eosinophil populations, suggestive of local mucosal allergy. Previously, T cell subsets have not been characterized in this subselection of nonallergic subjects and furthermore, their relationship to mast cell and basophil effector cells remain unidentified. OBJECTIVE To determine if a subpopulation of nonallergic subjects with idiopathic rhinitis (IR) have localized allergy confined to their nasal mucosa by comparing the T cell subsets and major histocompatibility complex (MHC) II expressing cells to persistent allergic rhinitis (PAR). Furthermore, the relationship between T cell subsets and mast cells/basophils was investigated. METHODS None of the symptomatic patients in this study were clinically allergen-challenged. Nasal turbinate mucosa was removed from patients with PAR, IR and normal controls. Morphometry was performed on immunostained sections for T cell subset populations including CD3+, CD4+, CD8+, CD25+, CD45RA+, CD45RO+, human leucocyte antigen (HLA)-DRalpha (MHC class II), mast cell tryptase and for basophils. RESULTS Subjects with persistent allergic rhinitis differed to normal controls in showing significantly increased numbers of total (CD3+), activated (CD25+) and allergen-naïve (CD45RA+) T lymphocytes in their nasal mucosa (P < 0.025). The naïve CD45RA+ memory T cells correlated to mucosal mast cells in PAR (P = 0.03). IR patients differ to allergic subjects in showing significantly reduced numbers of epithelial HLA-DRalpha+ cells (P = 0.007), but increased numbers of CD8+ lymphocytes (P = 0.02). The CD8+ T cells correlated with mucosal mast cell numbers (P = 0.02). In both rhinitis groups, basophils were present in very low numbers obviating the need for statistical analysis. CONCLUSION PAR is characterized by increased numbers of CD3+, CD25+ and CD45RA+ T lymphocytes compared with normal mucosa. Allergic and nonallergic rhinitis groups can be separated by significant differences in the number of epithelial antigen presenting cells (APCs) (HLA-DRalpha+) and sub-epithelial activated (CD25+) T cells. Moreover, IR patients do not significantly differ to their allergic counterparts with respect to total (CD3+) and naïve (CD45RA+) T cell numbers, or numbers of epithelial activated (CD25+) lymphocytes. IR subjects show significantly increased numbers of CD8+ lymphocytes compared with control mucosa and although our findings suggest that the initiating inflammatory events may differ, both rhinitis groups show a similarity in pathology involving mucosal mast cells with an association to infiltrating T cells.
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Affiliation(s)
- D G Powe
- School of Medical Molecular Science, University Hospital, Queen's Medical Centre, Nottingham NG7 2UH, UK
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He S, Aslam A, Gaça MDA, He Y, Buckley MG, Hollenberg MD, Walls AF. Inhibitors of Tryptase as Mast Cell-Stabilizing Agents in the Human Airways: Effects of Tryptase and Other Agonists of Proteinase-Activated Receptor 2 on Histamine Release. J Pharmacol Exp Ther 2004; 309:119-26. [PMID: 14722328 DOI: 10.1124/jpet.103.061291] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Tryptase, the major secretory product of human mast cells, is emerging as a new target for therapeutic intervention in allergic airways disease. We have investigated the ability of tryptase and inhibitors of tryptase to modulate histamine release from human lung mast cells and have examined the potential contribution of proteinase-activated receptor 2 (PAR2). The tryptase inhibitor APC366 [N-(1-hydroxy-2-naphthoyl)-L-arginyl-L-prolinamide hydrochloride] was highly effective at inhibiting histamine release stimulated by anti-IgE antibody or calcium ionophore from enzymatically dispersed human lung cells. A concentration of APC366 as low as 10 microM was able to inhibit anti-IgE-dependent histamine release by some 50%. Addition of leupeptin or the tryptic substrate N-benzoyl-D,L-arginine-p-nitroanilide also inhibited IgE-dependent histamine release. Purified tryptase in the presence of heparin stimulated a small but significant release of histamine from lung cells, suggesting that tryptase may provide an amplification signal from activated cells that may be susceptible to proteinase inhibitors. Trypsin was also able to induce histamine release apparently by a catalytic mechanism. Moreover, pretreatment of cells with metabolic inhibitors or with pertussis toxin reduced responses, indicating a noncytoxic pertussis toxin-sensitive G protein-mediated signaling process. Addition to cells of the PAR2 agonists SLIGKV-NH(2) or tc-LIGRLO-NH(2) or appropriate control peptides were without effect on histamine release, and PAR2 was not detected by immunohistochemistry in tissue mast cells. The potent actions of tryptase inhibitors as mast cell-stabilizing agents could be of value in the treatment of allergic inflammation of the respiratory tract, possibly by targeting the non-PAR2-mediated actions of tryptase.
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Affiliation(s)
- Shaoheng He
- Immunopharmacology Group, Mailpoint 837, South Block, Southampton General Hospital, Southampton SO16 6YD, UK.
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Sheth PD, Pedersen J, Walls AF, McEuen AR. Inhibition of dipeptidyl peptidase I in the human mast cell line HMC-1: blocked activation of tryptase, but not of the predominant chymotryptic activity. Biochem Pharmacol 2004; 66:2251-62. [PMID: 14609749 DOI: 10.1016/j.bcp.2003.08.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The mast cell proteases tryptase and chymase are synthesised as inactive precursors, but are stored and secreted as active enzymes. The cysteinyl protease dipeptidyl peptidase I (DPPI, cathepsin C) can activate the corresponding proenzymes in cell-free systems, but it is unknown whether it fulfils this role within the intact cell. We, therefore, tested the effect the DPPI-selective inhibitor Gly-Phe diazomethyl ketone (Gly-Phe-CHN(2)) on the tryptic and chymotryptic activity of the human mast cell-like cell line, HMC-1, and monitored any changes in the amount of immunodetectable enzymes by flow cytometry. Culture in Gly-Phe-CHN(2) produced a significant decrease in tryptase activity in cell lysates within 24hr and further decreases during continued culturing to 216 hr with periodic replenishment of Gly-Phe-CHN(2)-containing media. Flow cytometry showed no significant change in the levels of immunoreactive tryptase. In contrast, chymotryptic activity in treated cells did not differ significantly from untreated cells at any time point. Treatment of 216 hr cell lysates with DPPI revealed significant amounts of activatable protryptase in Gly-Phe-CHN(2)-treated cells, but not in controls, whereas activatable prochymotryptic activity was found in both treated and control cells. Chymase was detected immunologically, though small differences in substrate specificity and molecular mass were observed. These results strongly suggest that DPPI plays a role in the activation of tryptase, but not of the predominant chymotryptic activity of HMC-1 cells. As inhibitors of tryptase have proven efficacious in models of allergic disease, these results also indicate that inhibitors of DPPI might provide an additional point of therapeutic control.
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Affiliation(s)
- Parimal D Sheth
- Immunopharmacology Group, Division of Infection, Immunity and Repair, University of Southampton Medical School, Southampton General Hospital, Southampton SO16 6YD, UK
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