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Shubin NJ, Glukhova VA, Clauson M, Truong P, Abrink M, Pejler G, White NJ, Deutsch GH, Reeves SR, Vaisar T, James RG, Piliponsky AM. Proteome analysis of mast cell releasates reveals a role for chymase in the regulation of coagulation factor XIIIA levels via proteolytic degradation. J Allergy Clin Immunol 2016; 139:323-334. [PMID: 27302551 DOI: 10.1016/j.jaci.2016.03.051] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 03/03/2016] [Accepted: 03/17/2016] [Indexed: 11/24/2022]
Abstract
BACKGROUND Mast cells are significantly involved in IgE-mediated allergic reactions; however, their roles in health and disease are incompletely understood. OBJECTIVE We aimed to define the proteome contained in mast cell releasates on activation to better understand the factors secreted by mast cells that are relevant to the contribution of mast cells in diseases. METHODS Bone marrow-derived cultured mast cells (BMCMCs) and peritoneal cell-derived mast cells were used as "surrogates" for mucosal and connective tissue mast cells, respectively, and their releasate proteomes were analyzed by mass spectrometry. RESULTS Our studies showed that BMCMCs and peritoneal cell-derived mast cells produced substantially different releasates following IgE-mediated activation. Moreover, we observed that the transglutaminase coagulation factor XIIIA (FXIIIA) was one of the most abundant proteins contained in the BMCMC releasates. Mast cell-deficient mice exhibited increased FXIIIA plasma and activity levels as well as reduced bleeding times, indicating that mast cells are more efficient in their ability to downregulate FXIIIA than in contributing to its amounts and functions in homeostatic conditions. We found that human chymase and mouse mast cell protease-4 (the mouse homologue of human chymase) had the ability to reduce FXIIIA levels and function via proteolytic degradation. Moreover, we found that chymase deficiency led to increased FXIIIA amounts and activity, as well as reduced bleeding times in homeostatic conditions and during sepsis. CONCLUSIONS Our study indicates that the mast cell protease content can shape its releasate proteome. Moreover, we found that chymase plays an important role in the regulation of FXIIIA via proteolytic degradation.
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Affiliation(s)
- Nicholas J Shubin
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Veronika A Glukhova
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Morgan Clauson
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Phuong Truong
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Magnus Abrink
- Department of Biomedical Sciences and Veterinary Public Health, Swedish University for Agricultural Sciences, Uppsala, Sweden
| | - Gunnar Pejler
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden; Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Nathan J White
- Division of Emergency Medicine, Department of Medicine, University of Washington, Seattle, Wash
| | - Gail H Deutsch
- Department of Laboratories, Seattle Children's Research Institute, Seattle, Wash
| | - Stephen R Reeves
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash; Department of Pediatrics, University of Washington, Seattle, Wash
| | - Tomas Vaisar
- Division of Metabolism, Endocrinology, and Nutrition, Department of Medicine, University of Washington, Seattle, Wash
| | - Richard G James
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash
| | - Adrian M Piliponsky
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, Wash; Department of Pediatrics, University of Washington, Seattle, Wash.
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Mickys U, Barakauskiene A, De Wolf-Peeters C, Geboes K, De Hertogh G. Aggressive systemic mastocytosis complicated by protein-losing enteropathy. Dig Liver Dis 2007; 39:693-7. [PMID: 16843741 DOI: 10.1016/j.dld.2006.06.003] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2006] [Revised: 05/12/2006] [Accepted: 06/05/2006] [Indexed: 02/07/2023]
Abstract
A 46-year-old woman was admitted to the hospital with complaints of chronic diarrhoea, vomiting and severe muscle weakness. Clinical examination showed a lethargic, malnourished, dehydrated patient with ascites and bilateral leg oedema. Laboratory evaluation revealed mild normochromic normocytic anaemia and severe hypoproteinaemia with hypoalbuminaemia. Upper gastrointestinal endoscopy showed a thickened, friable duodenal mucosa with multiple erosions. Colonoscopy revealed nodular, pseudopolypoid lesions with patchy erosions in the left hemicolon. Haematoxylin-eosin stained sections from biopsies of endoscopically abnormal bowel segments showed multi-focal aggregates of large, histiocyte-like cells with abundant pale cytoplasm in the lamina propria. These cells were negative on PAS, Ziehl-Neelsen, Giemsa and toluidine blue stains. Their immunophenotype was CD68 (+), c-kit/CD117 (+) and mast cell tryptase (+), which is consistent with mast cells. A trephine biopsy showed diffuse replacement of the bone marrow by atypical, monomorphic, frequently spindle-shaped mast cells. No associated haematopoietic malignancy was detected. The final diagnosis was aggressive systemic mastocytosis with involvement of the gastrointestinal tract complicated by protein-losing enteropathy. This association has not been reported previously. The patient has been treated with prednisolone and interferon-alpha and has since recovered.
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Affiliation(s)
- U Mickys
- National Center of Pathology, P. Baublio 5, LT-08406 Vilnius, Lithuania
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