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Hung L, Celik A, Yin X, Yu K, Berenjy A, Kothari A, Obernolte H, Upton JEM, Lindholm Bøgh K, Somers GR, Siddiqui I, Grealish M, Quereshy FA, Sewald K, Chiu PPL, Eiwegger T. Precision cut intestinal slices, a novel model of acute food allergic reactions. Allergy 2023; 78:500-511. [PMID: 36377289 PMCID: PMC10098956 DOI: 10.1111/all.15579] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 10/17/2022] [Accepted: 10/28/2022] [Indexed: 11/17/2022]
Abstract
BACKGROUND Food allergy affects up to 10% of the pediatric population. Despite ongoing efforts, treatment options remain limited. Novel models of food allergy are needed to study response patterns downstream of IgE-crosslinking and evaluate drugs modifying acute events. Here, we report a novel human ex vivo model that displays acute, allergen-specific, IgE-mediated smooth muscle contractions using precision cut intestinal slices (PCIS). METHODS PCIS were generated using gut tissue samples from children who underwent clinically indicated surgery. Viability and metabolic activity were assessed from 0 to 24 h. Distribution of relevant cell subsets was confirmed using single nucleus RNA sequencing. PCIS were passively sensitized using plasma from peanut allergic donors or peanut-sensitized non-allergic donors, and exposed to various stimuli including serotonin, histamine, FcɛRI-crosslinker, and food allergens. Smooth muscle contractions and mediator release functioned as readouts. A novel program designed to measure contractions was developed to quantify responses. The ability to demonstrate the impact of antihistamines and immunomodulation from peanut oral immunotherapy (OIT) was assessed. RESULTS PCIS viability was maintained for 24 h. Cellular distribution confirmed the presence of key cell subsets including mast cells. The video analysis tool reliably quantified responses to different stimulatory conditions. Smooth muscle contractions were allergen-specific and reflected the clinical phenotype of the plasma donor. Tryptase measurement confirmed IgE-dependent mast cell-derived mediator release. Antihistamines suppressed histamine-induced contraction and plasma from successful peanut OIT suppressed peanut-specific PCIS contraction. CONCLUSION PCIS represent a novel human tissue-based model to study acute, IgE-mediated food allergy and pharmaceutical impacts on allergic responses in the gut.
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Affiliation(s)
- Lisa Hung
- Translational Medicine Program, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Immunology, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Alper Celik
- Centre for Computational Medicine, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Xiaojun Yin
- Translational Medicine Program, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Kai Yu
- Division of Advanced Diagnostics, Toronto General Hospital Research Institute, University Health Network, Toronto, Ontario, Canada
| | - Alireza Berenjy
- Translational Medicine Program, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Akash Kothari
- Translational Medicine Program, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada.,Institute of Medical Science, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Helena Obernolte
- Department of Preclinical Pharmacology and In-Vitro Toxicology, Fraunhofer Institute for Toxicology and Experimental Medicine, Hannover, Germany
| | - Julia E M Upton
- Division of Immunology and Allergy, SickKids Food Allergy and Anaphylaxis Program, Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Paediatrics, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | | | - Gino R Somers
- Department of Laboratory Medicine and Pathobiology, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.,Department of Paediatric Laboratory Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Iram Siddiqui
- Department of Laboratory Medicine and Pathobiology, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.,Department of Paediatric Laboratory Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Martin Grealish
- Surgical Pathology, University Health Network, Toronto, Ontario, Canada
| | - Fayez A Quereshy
- Surgical Oncology and Minimally Invasive Surgery, Princess Margaret Cancer Centre, University Health Network, Toronto, Ontario, Canada.,Department of Surgery, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Katherina Sewald
- Department of Preclinical Pharmacology and In-Vitro Toxicology, Fraunhofer Institute for Toxicology and Experimental Medicine, Hannover, Germany
| | - Priscilla P L Chiu
- Division of General and Thoracic Surgery, Hospital for Sick Children, Toronto, Ontario, Canada
| | - Thomas Eiwegger
- Translational Medicine Program, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Immunology, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.,Karl Landsteiner University of Health Sciences, Krems an der Donau, Austria.,Department of Pediatric and Adolescent Medicine, University Hospital St. Pölten, St. Pölten, Austria
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Mohajeri M, Kovanen PT, Bianconi V, Pirro M, Cicero AFG, Sahebkar A. Mast cell tryptase - Marker and maker of cardiovascular diseases. Pharmacol Ther 2019; 199:91-110. [PMID: 30877022 DOI: 10.1016/j.pharmthera.2019.03.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 03/01/2019] [Indexed: 12/14/2022]
Abstract
Mast cells are tissue-resident cells, which have been proposed to participate in various inflammatory diseases, among them the cardiovascular diseases (CVDs). For mast cells to be able to contribute to an inflammatory process, they need to be activated to exocytose their cytoplasmic secretory granules. The granules contain a vast array of highly bioactive effector molecules, the neutral protease tryptase being the most abundant protein among them. The released tryptase may act locally in the inflamed cardiac or vascular tissue, so contributing directly to the pathogenesis of CVDs. Moreover, a fraction of the released tryptase reaches the systemic circulation, thereby serving as a biomarker of mast cell activation. Actually, increased levels of circulating tryptase have been found to associate with CVDs. Here we review the biological relevance of the circulating tryptase as a biomarker of mast cell activity in CVDs, with special emphasis on the relationship between activation of mast cells in their tissue microenvironments and the pathophysiological pathways of CVDs. Based on the available in vitro and in vivo studies, we highlight the potential molecular mechanisms by which tryptase may contribute to the pathogenesis of CVDs. Finally, the synthetic and natural inhibitors of tryptase are reviewed for their potential utility as therapeutic agents in CVDs.
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Affiliation(s)
- Mohammad Mohajeri
- Department of Medical Biotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Vanessa Bianconi
- Unit of Internal Medicine, Department of Medicine, University of Perugia, Perugia, Italy
| | - Matteo Pirro
- Unit of Internal Medicine, Department of Medicine, University of Perugia, Perugia, Italy
| | - Arrigo F G Cicero
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Abstract
INTRODUCTION Tryptase is one of the main serine-proteinases located in the secretory granules of mast cells, and is released through degranulation, which is involved in the pathogenesis of allergic inflammatory disease, cardiovascular diseases, lung fibrosis and tumor. Therefore, inhibitors targeting tryptase may represent a new direction for the treatment of allergic inflammatory disease and other diseases. Areas covered: In this article, we discussed the history and development of tryptase inhibitors and described a variety of tryptase inhibitors via their structures and biological importance in clinical studies and drug development for tryptase-related diseases. Expert opinion: Initial tryptase inhibitors based on indole structure as the hydrophobic substituent on a benzylamine-piperidine template have low specificity and poor bioavailability. Therefore, designing new and specific inhibitors targeting tryptase should be involved in future clinical studies. Modifications toward indoles with varying N-substitution, introducing an amide bond, and growing the chain length contribute to an increase in the specific selectivity and potency of tryptase inhibitors. Tryptase has become the research hotspot to explore many related diseases. Therefore, there has been growing appreciation for the potential importance of the tryptase inhibitors as a target for treating these diseases.
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Affiliation(s)
- Wei-Wei Ni
- a Research Division of Clinical Pharmacology , the First Affiliated Hospital of Nanjing Medical University , Nanjing , Jiangsu , China
| | - Meng-Da Cao
- a Research Division of Clinical Pharmacology , the First Affiliated Hospital of Nanjing Medical University , Nanjing , Jiangsu , China
| | - Wen Huang
- a Research Division of Clinical Pharmacology , the First Affiliated Hospital of Nanjing Medical University , Nanjing , Jiangsu , China
| | - Ling Meng
- a Research Division of Clinical Pharmacology , the First Affiliated Hospital of Nanjing Medical University , Nanjing , Jiangsu , China
| | - Ji-Fu Wei
- a Research Division of Clinical Pharmacology , the First Affiliated Hospital of Nanjing Medical University , Nanjing , Jiangsu , China
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Fernandez CA, Smith C, Karol SE, Ramsey LB, Liu C, Pui CH, Jeha S, Evans WE, Finkelman FD, Relling MV. Effect of premedications in a murine model of asparaginase hypersensitivity. J Pharmacol Exp Ther 2015; 352:541-51. [PMID: 25573198 DOI: 10.1124/jpet.114.220780] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A murine model was developed that recapitulates key features of clinical hypersensitivity to Escherichia coli asparaginase. Sensitized mice developed high levels of anti-asparaginase IgG antibodies and had immediate hypersensitivity reactions to asparaginase upon challenge. Sensitized mice had complete inhibition of plasma asparaginase activity (P = 4.2 × 10(-13)) and elevated levels of mouse mast cell protease 1 (P = 6.1 × 10(-3)) compared with nonsensitized mice. We investigated the influence of pretreatment with triprolidine, cimetidine, the platelet activating factor (PAF) receptor antagonist CV-6209 [2-(2-acetyl-6-methoxy-3,9-dioxo-4,8-dioxa-2,10-diazaoctacos-1-yl)-1-ethyl-pyridinium chloride], or dexamethasone on the severity of asparaginase-induced allergies. Combining triprolidine and CV-6209 was best for mitigating asparaginase-induced hypersensitivity compared with nonpretreated, sensitized mice (P = 1.2 × 10(-5)). However, pretreatment with oral dexamethasone was the only agent capable of mitigating the severity of the hypersensitivity (P = 0.03) and partially restoring asparaginase activity (P = 8.3 × 10(-4)). To rescue asparaginase activity in sensitized mice without requiring dexamethasone, a 5-fold greater dose of asparaginase was needed to restore enzyme activity to a similar concentration as in nonsensitized mice. Our results suggest a role of histamine and PAF in asparaginase-induced allergies and indicate that mast cell-derived proteases released during asparaginase allergy may be a useful marker of clinical hypersensitivity.
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Affiliation(s)
- Christian A Fernandez
- Department of Pharmaceutical Sciences (C.A.F., C.S., S.E.K., L.B.R., C.L., W.E.E., M.V.R.) and Department of Oncology (S.E.K., C.-H.P., S.J.), St. Jude Children's Research Hospital, Memphis, Tennessee; Department of Medicine, Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio (F.D.F.); Department of Internal Medicine, Division of Immunology, Allergy and Rheumatology, University of Cincinnati College of Medicine, Cincinnati, Ohio (F.D.F.); and Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio (F.D.F.)
| | - Colton Smith
- Department of Pharmaceutical Sciences (C.A.F., C.S., S.E.K., L.B.R., C.L., W.E.E., M.V.R.) and Department of Oncology (S.E.K., C.-H.P., S.J.), St. Jude Children's Research Hospital, Memphis, Tennessee; Department of Medicine, Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio (F.D.F.); Department of Internal Medicine, Division of Immunology, Allergy and Rheumatology, University of Cincinnati College of Medicine, Cincinnati, Ohio (F.D.F.); and Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio (F.D.F.)
| | - Seth E Karol
- Department of Pharmaceutical Sciences (C.A.F., C.S., S.E.K., L.B.R., C.L., W.E.E., M.V.R.) and Department of Oncology (S.E.K., C.-H.P., S.J.), St. Jude Children's Research Hospital, Memphis, Tennessee; Department of Medicine, Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio (F.D.F.); Department of Internal Medicine, Division of Immunology, Allergy and Rheumatology, University of Cincinnati College of Medicine, Cincinnati, Ohio (F.D.F.); and Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio (F.D.F.)
| | - Laura B Ramsey
- Department of Pharmaceutical Sciences (C.A.F., C.S., S.E.K., L.B.R., C.L., W.E.E., M.V.R.) and Department of Oncology (S.E.K., C.-H.P., S.J.), St. Jude Children's Research Hospital, Memphis, Tennessee; Department of Medicine, Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio (F.D.F.); Department of Internal Medicine, Division of Immunology, Allergy and Rheumatology, University of Cincinnati College of Medicine, Cincinnati, Ohio (F.D.F.); and Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio (F.D.F.)
| | - Chengcheng Liu
- Department of Pharmaceutical Sciences (C.A.F., C.S., S.E.K., L.B.R., C.L., W.E.E., M.V.R.) and Department of Oncology (S.E.K., C.-H.P., S.J.), St. Jude Children's Research Hospital, Memphis, Tennessee; Department of Medicine, Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio (F.D.F.); Department of Internal Medicine, Division of Immunology, Allergy and Rheumatology, University of Cincinnati College of Medicine, Cincinnati, Ohio (F.D.F.); and Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio (F.D.F.)
| | - Ching-Hon Pui
- Department of Pharmaceutical Sciences (C.A.F., C.S., S.E.K., L.B.R., C.L., W.E.E., M.V.R.) and Department of Oncology (S.E.K., C.-H.P., S.J.), St. Jude Children's Research Hospital, Memphis, Tennessee; Department of Medicine, Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio (F.D.F.); Department of Internal Medicine, Division of Immunology, Allergy and Rheumatology, University of Cincinnati College of Medicine, Cincinnati, Ohio (F.D.F.); and Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio (F.D.F.)
| | - Sima Jeha
- Department of Pharmaceutical Sciences (C.A.F., C.S., S.E.K., L.B.R., C.L., W.E.E., M.V.R.) and Department of Oncology (S.E.K., C.-H.P., S.J.), St. Jude Children's Research Hospital, Memphis, Tennessee; Department of Medicine, Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio (F.D.F.); Department of Internal Medicine, Division of Immunology, Allergy and Rheumatology, University of Cincinnati College of Medicine, Cincinnati, Ohio (F.D.F.); and Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio (F.D.F.)
| | - William E Evans
- Department of Pharmaceutical Sciences (C.A.F., C.S., S.E.K., L.B.R., C.L., W.E.E., M.V.R.) and Department of Oncology (S.E.K., C.-H.P., S.J.), St. Jude Children's Research Hospital, Memphis, Tennessee; Department of Medicine, Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio (F.D.F.); Department of Internal Medicine, Division of Immunology, Allergy and Rheumatology, University of Cincinnati College of Medicine, Cincinnati, Ohio (F.D.F.); and Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio (F.D.F.)
| | - Fred D Finkelman
- Department of Pharmaceutical Sciences (C.A.F., C.S., S.E.K., L.B.R., C.L., W.E.E., M.V.R.) and Department of Oncology (S.E.K., C.-H.P., S.J.), St. Jude Children's Research Hospital, Memphis, Tennessee; Department of Medicine, Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio (F.D.F.); Department of Internal Medicine, Division of Immunology, Allergy and Rheumatology, University of Cincinnati College of Medicine, Cincinnati, Ohio (F.D.F.); and Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio (F.D.F.)
| | - Mary V Relling
- Department of Pharmaceutical Sciences (C.A.F., C.S., S.E.K., L.B.R., C.L., W.E.E., M.V.R.) and Department of Oncology (S.E.K., C.-H.P., S.J.), St. Jude Children's Research Hospital, Memphis, Tennessee; Department of Medicine, Cincinnati Veterans Affairs Medical Center, Cincinnati, Ohio (F.D.F.); Department of Internal Medicine, Division of Immunology, Allergy and Rheumatology, University of Cincinnati College of Medicine, Cincinnati, Ohio (F.D.F.); and Division of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio (F.D.F.)
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