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Lin H, Del Rio Castillo AE, González VJ, Bonaccorso F, Vázquez E, Fadeel B, Bianco A. Cytotoxicity assessment of exfoliated MoS 2 using primary human mast cells and the progenitor cell-derived mast cell line LAD2. NANOSCALE ADVANCES 2024; 6:2419-2430. [PMID: 38694463 PMCID: PMC11059565 DOI: 10.1039/d3na00863k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 03/27/2024] [Indexed: 05/04/2024]
Abstract
Molybdenum disulfide is an emerging 2D material with several potential applications in medicine. Therefore, it is crucial to ascertain its biocompatibility. Mast cells are immune cells that are found in many organs and tissues in contact with the extracellular environment, and can be cultured from progenitor cells present in the bone marrow. Given the long period required for differentiation and proliferation of primary mast cells, human mast cell lines have emerged as a tractable model for biological and toxicological studies. Here, we compare two types of industrial MoS2 using CD34+-derived primary human mast cells and the LAD2 cell line. Minimal effects were observed on early-stage activation endpoints such as β-hexosaminidase release and expression of surface markers of mast cell activation. Transmission electron microscopy revealed limited uptake of the tested materials. Overall, MoS2 was found to be biocompatible, and the LAD2 cell line was validated as a useful in vitro model of mast cells.
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Affiliation(s)
- Hazel Lin
- CNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR 3572, University of Strasbourg, ISIS 67000 Strasbourg France
| | | | - Viviana Jehová González
- Biograph Solutions, Regional Institute of Applied Scientific Research (IRICA), Department of Organic Chemistry, Faculty of Science and Chemistry Technologies, University of Castilla-La Mancha Ciudad Real 13071 Spain
| | | | - Ester Vázquez
- Biograph Solutions, Regional Institute of Applied Scientific Research (IRICA), Department of Organic Chemistry, Faculty of Science and Chemistry Technologies, University of Castilla-La Mancha Ciudad Real 13071 Spain
| | - Bengt Fadeel
- Nanosafety & Nanomedicine Laboratory, Institute of Environmental Medicine, Karolinska Institutet 177 77 Stockholm Sweden
| | - Alberto Bianco
- CNRS, Immunology, Immunopathology and Therapeutic Chemistry, UPR 3572, University of Strasbourg, ISIS 67000 Strasbourg France
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2
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van der Elst G, Varol H, Hermans M, Baan CC, Duong-van Huyen JP, Hesselink DA, Kramann R, Rabant M, Reinders MEJ, von der Thüsen JH, van den Bosch TPP, Clahsen-van Groningen MC. The mast cell: A Janus in kidney transplants. Front Immunol 2023; 14:1122409. [PMID: 36891297 PMCID: PMC9986315 DOI: 10.3389/fimmu.2023.1122409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 01/30/2023] [Indexed: 02/22/2023] Open
Abstract
Mast cells (MCs) are innate immune cells with a versatile set of functionalities, enabling them to orchestrate immune responses in various ways. Aside from their known role in allergy, they also partake in both allograft tolerance and rejection through interaction with regulatory T cells, effector T cells, B cells and degranulation of cytokines and other mediators. MC mediators have both pro- and anti-inflammatory actions, but overall lean towards pro-fibrotic pathways. Paradoxically, they are also seen as having potential protective effects in tissue remodeling post-injury. This manuscript elaborates on current knowledge of the functional diversity of mast cells in kidney transplants, combining theory and practice into a MC model stipulating both protective and harmful capabilities in the kidney transplant setting.
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Affiliation(s)
- G van der Elst
- Department of Pathology and Clinical Bioinformatics, Erasmus University Center Rotterdam, Rotterdam, Netherlands
| | - H Varol
- Department of Pathology and Clinical Bioinformatics, Erasmus University Center Rotterdam, Rotterdam, Netherlands
| | - M Hermans
- Department of Internal Medicine, Division of Allergy and Clinical Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, Netherlands
| | - C C Baan
- Department of Internal Medicine, Division of Nephrology and Transplantation, Erasmus University Medical Center Rotterdam, Rotterdam, Netherlands
| | | | - D A Hesselink
- Department of Internal Medicine, Division of Nephrology and Transplantation, Erasmus University Medical Center Rotterdam, Rotterdam, Netherlands
| | - R Kramann
- Department of Internal Medicine, Division of Nephrology and Transplantation, Erasmus University Medical Center Rotterdam, Rotterdam, Netherlands.,Institute of Experimental Medicine and Systems Biology, RWTH Aachen University, Aachen, Germany.,Division of Nephrology and Clinical Immunology, RWTH Aachen University Hospital, Aachen, Germany
| | - M Rabant
- Department of Pathology, Necker Hospital, APHP, Paris, France
| | - M E J Reinders
- Department of Internal Medicine, Division of Nephrology and Transplantation, Erasmus University Medical Center Rotterdam, Rotterdam, Netherlands
| | - J H von der Thüsen
- Department of Pathology and Clinical Bioinformatics, Erasmus University Center Rotterdam, Rotterdam, Netherlands
| | - T P P van den Bosch
- Department of Pathology and Clinical Bioinformatics, Erasmus University Center Rotterdam, Rotterdam, Netherlands
| | - M C Clahsen-van Groningen
- Department of Pathology and Clinical Bioinformatics, Erasmus University Center Rotterdam, Rotterdam, Netherlands.,Institute of Experimental Medicine and Systems Biology, RWTH Aachen University, Aachen, Germany
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3
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Jiménez M, Cervantes-García D, Córdova-Dávalos LE, Pérez-Rodríguez MJ, Gonzalez-Espinosa C, Salinas E. Responses of Mast Cells to Pathogens: Beneficial and Detrimental Roles. Front Immunol 2021; 12:685865. [PMID: 34211473 PMCID: PMC8240065 DOI: 10.3389/fimmu.2021.685865] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 05/28/2021] [Indexed: 12/19/2022] Open
Abstract
Mast cells (MCs) are strategically located in tissues close to the external environment, being one of the first immune cells to interact with invading pathogens. They are long living effector cells equipped with different receptors that allow microbial recognition. Once activated, MCs release numerous biologically active mediators in the site of pathogen contact, which induce vascular endothelium modification, inflammation development and extracellular matrix remodeling. Efficient and direct antimicrobial mechanisms of MCs involve phagocytosis with oxidative and non-oxidative microbial destruction, extracellular trap formation, and the release of antimicrobial substances. MCs also contribute to host defense through the attraction and activation of phagocytic and inflammatory cells, shaping the innate and adaptive immune responses. However, as part of their response to pathogens and under an impaired, sustained, or systemic activation, MCs may contribute to tissue damage. This review will focus on the current knowledge about direct and indirect contribution of MCs to pathogen clearance. Antimicrobial mechanisms of MCs are addressed with special attention to signaling pathways involved and molecular weapons implicated. The role of MCs in a dysregulated host response that can increase morbidity and mortality is also reviewed and discussed, highlighting the complexity of MCs biology in the context of host-pathogen interactions.
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Affiliation(s)
- Mariela Jiménez
- Laboratory of Immunology, Department of Microbiology, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
| | - Daniel Cervantes-García
- Laboratory of Immunology, Department of Microbiology, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico.,Cátedras CONACYT, National Council of Science and Technology, Mexico City, Mexico
| | - Laura E Córdova-Dávalos
- Laboratory of Immunology, Department of Microbiology, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
| | - Marian Jesabel Pérez-Rodríguez
- Department of Pharmacobiology, Centro de Investigación y de Estudios Avanzados (Cinvestav), Unidad Sede Sur, Mexico City, Mexico
| | - Claudia Gonzalez-Espinosa
- Department of Pharmacobiology, Centro de Investigación y de Estudios Avanzados (Cinvestav), Unidad Sede Sur, Mexico City, Mexico
| | - Eva Salinas
- Laboratory of Immunology, Department of Microbiology, Universidad Autónoma de Aguascalientes, Aguascalientes, Mexico
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4
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Pinke KH, Zorzella-Pezavento SFG, Lara VS, Sartori A. Should mast cells be considered therapeutic targets in multiple sclerosis? Neural Regen Res 2020; 15:1995-2007. [PMID: 32394947 PMCID: PMC7716037 DOI: 10.4103/1673-5374.282238] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 12/19/2019] [Accepted: 01/16/2020] [Indexed: 12/23/2022] Open
Abstract
Mast cells are immune cells of the myeloid lineage that are found throughout the body, including the central nervous system. They perform many functions associated with innate and specific immunity, angiogenesis, and vascular homeostasis. Moreover, they have been implicated in a series of pathologies (e.g., hypersensitivity reactions, tumors, and inflammatory disorders). In this review, we propose that this cell could be a relevant therapeutic target in multiple sclerosis, which is a central nervous system degenerative disease. To support this proposition, we describe the general biological properties of mast cells, their contribution to innate and specific immunity, and the participation of mast cells in the various stages of multiple sclerosis and experimental autoimmune encephalomyelitis development. The final part of this review is dedicated to an overview of the available mast cells immunomodulatory drugs and their activity on multiple sclerosis and experimental autoimmune encephalomyelitis, including our own experience related to the effect of ketotifen fumarate on experimental autoimmune encephalomyelitis evolution.
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Affiliation(s)
- Karen Henriette Pinke
- Institute of Biosciences, Department of Microbiology and Immunology, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
| | | | - Vanessa Soares Lara
- Bauru School of Dentistry, Department of Surgery, Stomatology, Pathology and Radiology, University of São Paulo, Bauru, São Paulo, Brazil
| | - Alexandrina Sartori
- Institute of Biosciences, Department of Microbiology and Immunology, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil
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5
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de Lima HG, Pinke KH, Lopes MMR, Buzalaf CP, Campanelli AP, Lara VS. Mast cells exhibit intracellular microbicidal activity against Aggregatibacter actinomycetemcomitans. J Periodontal Res 2020; 55:744-752. [PMID: 32725826 DOI: 10.1111/jre.12763] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 03/27/2020] [Accepted: 04/23/2020] [Indexed: 12/23/2022]
Abstract
BACKGROUND AND OBJECTIVE Several studies have demonstrated that mast cells are equipped with versatile tools to combat and kill bacteria. Additionally, mast cells produce and secrete a variety of mediators, which either regulate the host's immune system or directly attack bacteria. In this study, the intracellular microbicidal capacity of mast cells against Aggregatibacter actinomycetemcomitans was evaluated. METHODS Murine mast cells were challenged in vitro with A actinomycetemcomitans for 3, 5, 10, and 24 hours. Subsequently, the colony-forming units were counted. Additionally, the production and release of nitric oxide and hydrogen peroxide were analyzed by DAF-FM diacetate, the Griess reaction, and the Amplex Red kit, respectively. Cell death was evaluated using FITC Annexin V and propidium iodide staining. RESULTS Mast cells are able to efficiently eliminate periodontopathogen, with best results after 10 hours of intracellular challenge. The production/release of nitric oxide-and to a lesser extent of hydrogen peroxide-by mast cells was in agreement with its microbicidal capacity. Ninety percent of the mast cells maintained their cellular viability even after 24 hours of bacterial challenge. CONCLUSIONS This is-to the best of our knowledge-the first report to describe the intracellular microbicidal activity of mast cells against A actinomycetemcomitans, concerning the production and release of potentially bactericidal substances. Further, the low number of cell deaths confirms that the decreased number of colony-forming units was due to the higher antimicrobial activity of mast cells. The results highlight the importance of these cells in the defense mechanisms of biofilm-induced periodontal disease.
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Affiliation(s)
- Heliton G de Lima
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Karen H Pinke
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Marcelo M R Lopes
- Integrated Research Center, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Camila P Buzalaf
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Ana Paula Campanelli
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Vanessa S Lara
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
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Casaroto AR, da Silva RA, Salmeron S, Rezende MLRD, Dionísio TJ, Santos CFD, Pinke KH, Klingbeil MFG, Salomão PA, Lopes MMR, Lara VS. Candida albicans-Cell Interactions Activate Innate Immune Defense in Human Palate Epithelial Primary Cells via Nitric Oxide (NO) and β-Defensin 2 (hBD-2). Cells 2019; 8:cells8070707. [PMID: 31336838 PMCID: PMC6678605 DOI: 10.3390/cells8070707] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 06/28/2019] [Accepted: 07/05/2019] [Indexed: 01/29/2023] Open
Abstract
The presence of Candida albicans in the biofilm underlying the dental prosthesis is related to denture stomatitis (DS), an inflammatory reaction of the oral mucosa. The oral epithelium, a component of the innate immune response, has the ability to react to fungal invasion. In this study, we evaluated the in vitro effect of viable C. albicans on the apoptosis, nitric oxide (NO) production, and β-defensin 2 (hBD-2) expression and production of human palate epithelial cells (HPECs). We further determined whether or not these effects were correlated with fungal invasion of epithelial cells. Interaction between HPEC primary culture and C. albicans was obtained through either direct or indirect cell–cell contact with a supernatant from a hyphal fungus. We found that the hyphae supernatants were sufficient to induce slight HPEC apoptosis, which occurred prior to the activation of the specific mechanisms of epithelial defense. The epithelial defense responses were found to occur via NO and antimicrobial peptide hBD-2 production only during direct contact between C. albicans and HPECs and coincided with the fungus’s intraepithelial invasion. However, although the hBD-2 levels remained constant in the HPEC supernatants over time, the NO release and hBD-2 gene expression were reduced at a later time (10 h), indicating that the epithelial defense capacity against the fungal invasion was not maintained in later phases. This aspect of the immune response was associated with increased epithelial invasion and apoptosis maintenance.
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Affiliation(s)
- Ana Regina Casaroto
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil.
| | - Rafaela Alves da Silva
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil
| | - Samira Salmeron
- Department of Prosthodontics and Periodontology, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil
| | - Maria Lúcia Rubo de Rezende
- Department of Prosthodontics and Periodontology, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil
| | - Thiago José Dionísio
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil
| | - Carlos Ferreira Dos Santos
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil
| | - Karen Henriette Pinke
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil
| | | | - Priscila Aranda Salomão
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil
| | - Marcelo Milanda Ribeiro Lopes
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil
| | - Vanessa Soares Lara
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, 17012-901 Bauru, SP, Brazil
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7
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Ponce JB, Midena RZ, Pinke KH, Weckwerth PH, Andrade FBD, Lara VS. In vitro treatment of Enterococcus faecalis with calcium hydroxide impairs phagocytosis by human macrophages. Acta Odontol Scand 2019; 77:158-163. [PMID: 30618320 DOI: 10.1080/00016357.2018.1533142] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
OBJECTIVE Monocyte-derived macrophages (MDMs) ability to phagocytize and produce nitric oxide (NO) was tested against root-canal strains of Enterococcus faecalis submitted to alkaline stress. Root-canal strains were also compared with urine Enterococci. MATERIALS AND METHODS Enterococcus faecalis were stressed with alkaline-BHI broth and incubated in vitro at a cell/bacteria ratio of 1:5. Phagocytosis was analyzed by fluorescence microscopy using acridine orange stain, and NO concentration was measured in supernatants. RESULTS AND CONCLUSIONS Alkaline-stress significantly impaired MDMs phagocytosis of E. faecalis strains analyzed, except in ATCC4083 isolated from a pulpless tooth, but NO production was unchanged. Comparison of different strains showed the urine isolate had higher NO levels than root canal strains. Alterations in the bacterial cell wall structures after alkaline-stress possibly made bacteria less recognizable and phagocytized by MDMs but did not affect their ability to activate NO production. Furthermore, root canal strains elicited different responses by immune cells compared with strains from urine. Clinically, impaired phagocytosis of E. faecalis could contribute to their persistence in root canal systems previously treated with calcium hydroxide.
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Affiliation(s)
- José Burgos Ponce
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Raquel Zanin Midena
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Karen Henriette Pinke
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | | | - Flaviana Bombarda de Andrade
- Department of Operative Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Vanessa Soares Lara
- Department of Surgery, Stomatology, Pathology and Radiology, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
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8
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Cathelicidin LL-37 Affects Surface and Intracellular Toll-Like Receptor Expression in Tissue Mast Cells. J Immunol Res 2018; 2018:7357162. [PMID: 29670923 PMCID: PMC5836302 DOI: 10.1155/2018/7357162] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 11/26/2017] [Indexed: 12/30/2022] Open
Abstract
Undoubtedly, mast cells take part in host defense against microorganisms as they are numerous at the portal of infection, they release many proinflammatory and antimicrobial mediators, and they express pattern recognition receptors, such as TLRs. These receptors play a key role in recognition and binding molecules associated with microorganisms and molecules associated with damage. Cathelicidins exhibit direct antimicrobial activities against a broad spectrum of microbes by perturbing their cell membranes. Accumulating evidence suggests a role for these molecules in supporting cell activation. We examined the impact of human cathelicidin LL-37 on tissue mast cell TLR expression and distribution. Depending on context, we show that LL-37 stimulation resulted in minor to major effects on TLR2, TLR3, TLR4, TLR5, TLR7, and TLR9 expression. Confocal microscopy analysis showed that, upon stimulation, TLRs may translocate from the cell interior to the surface and conversely. FPR2 and EGFR inhibitors reduced the increase in expression of selected receptors. We also established that LL-37 acts as a powerful inducer of CCL3 and ROS generation. These results showed that in response to LL-37, mast cells enhance the capability to detect invading pathogens by modulation of TLR expression in what may be involved FPR2 or EGFR molecules.
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9
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Atiakshin D, Samoilova V, Buchwalow I, Boecker W, Tiemann M. Characterization of mast cell populations using different methods for their identification. Histochem Cell Biol 2017; 147:683-694. [PMID: 28243739 DOI: 10.1007/s00418-017-1547-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/03/2017] [Indexed: 12/22/2022]
Abstract
Mast cells are ubiquitous throughout the human tissues and play an essential role in physiology and pathology. For evaluation of patients with pathological conditions, mast cells were primarily detected using metachromatic staining with toluidine blue. In the last decades, the staining arsenal of pathologists was enriched with enzyme histochemical and immunohistochemical methods, and it was established that depending on species and tissue localization mast cells are not similar both in appearance and function. The aim of this study was to characterize different mast cell populations using the up-to-date methods of their identification. We compared standard metachromatic method for mast cells with enzyme histochemical detection of chloroacetyl esterase and with immunohistochemical detection of tryptase and chymase in human and rodent tissues. Combination of these methods allowed us to assay quantitatively mast cell populations in different organs of humans and rodents. Furthermore, we assessed the appropriate implementation of each of these methods for mast cell identification in diagnostic labs.
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Affiliation(s)
- Dmitri Atiakshin
- Research Institute of Experimental Biology and Medicine, Burdenko Voronezh State Medical University, Voronezh, Russia
| | - Vera Samoilova
- Institute for Hematopathology, Fangdieckstreet 75a, 22547, Hamburg, Germany
| | - Igor Buchwalow
- Institute for Hematopathology, Fangdieckstreet 75a, 22547, Hamburg, Germany.
| | - Werner Boecker
- Institute for Hematopathology, Fangdieckstreet 75a, 22547, Hamburg, Germany
| | - Markus Tiemann
- Institute for Hematopathology, Fangdieckstreet 75a, 22547, Hamburg, Germany
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10
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Pinke KH, Lima HGD, Cunha FQ, Lara VS. Mast cells phagocyte Candida albicans and produce nitric oxide by mechanisms involving TLR2 and Dectin-1. Immunobiology 2016; 221:220-7. [DOI: 10.1016/j.imbio.2015.09.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 09/04/2015] [Accepted: 09/04/2015] [Indexed: 10/23/2022]
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11
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Herbert BA, Novince CM, Kirkwood KL. Aggregatibacter actinomycetemcomitans, a potent immunoregulator of the periodontal host defense system and alveolar bone homeostasis. Mol Oral Microbiol 2015. [PMID: 26197893 DOI: 10.1111/omi.12119] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Aggregatibacter actinomycetemcomitans is a perio-pathogenic bacteria that has long been associated with localized aggressive periodontitis. The mechanisms of its pathogenicity have been studied in humans and preclinical experimental models. Although different serotypes of A. actinomycetemcomitans have differential virulence factor expression, A. actinomycetemcomitans cytolethal distending toxin (CDT), leukotoxin, and lipopolysaccharide (LPS) have been most extensively studied in the context of modulating the host immune response. Following colonization and attachment in the oral cavity, A. actinomycetemcomitans employs CDT, leukotoxin, and LPS to evade host innate defense mechanisms and drive a pathophysiologic inflammatory response. This supra-physiologic immune response state perturbs normal periodontal tissue remodeling/turnover and ultimately has catabolic effects on periodontal tissue homeostasis. In this review, we have divided the host response into two systems: non-hematopoietic and hematopoietic. Non-hematopoietic barriers include epithelium and fibroblasts that initiate the innate immune host response. The hematopoietic system contains lymphoid and myeloid-derived cell lineages that are responsible for expanding the immune response and driving the pathophysiologic inflammatory state in the local periodontal microenvironment. Effector systems and signaling transduction pathways activated and utilized in response to A. actinomycetemcomitans will be discussed to further delineate immune cell mechanisms during A. actinomycetemcomitans infection. Finally, we will discuss the osteo-immunomodulatory effects induced by A. actinomycetemcomitans and dissect the catabolic disruption of balanced osteoclast-osteoblast-mediated bone remodeling, which subsequently leads to net alveolar bone loss.
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Affiliation(s)
- B A Herbert
- Department of Oral Health Sciences and the Center for Oral Health Research, Medical University of South Carolina, Charleston, SC, USA
| | - C M Novince
- Department of Oral Health Sciences and the Center for Oral Health Research, Medical University of South Carolina, Charleston, SC, USA
| | - K L Kirkwood
- Department of Oral Health Sciences and the Center for Oral Health Research, Medical University of South Carolina, Charleston, SC, USA.,Department of Microbiology and Immunology, Medical University of South Carolina, Charleston, SC, USA
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12
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Meléndez-Lazo A, Cazzini P, Camus M, Doria-Torra G, Marco Valle AJ, Solano-Gallego L, Pastor J. Cell cannibalism by malignant neoplastic cells: three cases in dogs and a literature review. Vet Clin Pathol 2015; 44:287-94. [DOI: 10.1111/vcp.12242] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Antonio Meléndez-Lazo
- Departament de Medicina i Cirurgia Animals; Universitat Autònoma de Barcelona; Barcelona Spain
- Hospital Clínic Veterinari; Universitat Autònoma de Barcelona; Barcelona Spain
| | - Paola Cazzini
- Veterinary Diagnostic Services; Jarrett Building; College of Medical, Veterinary & Life Sciences; University of Glasgow; Glasgow UK
| | - Melinda Camus
- College of Veterinary Medicine; University of Georgia; Athens GA USA
| | - Georgina Doria-Torra
- Departament de Sanitat i Anatomia Animals; Universitat Autònoma de Barcelona; Barcelona Spain
| | | | - Laia Solano-Gallego
- Departament de Medicina i Cirurgia Animals; Universitat Autònoma de Barcelona; Barcelona Spain
| | - Josep Pastor
- Departament de Medicina i Cirurgia Animals; Universitat Autònoma de Barcelona; Barcelona Spain
- Hospital Clínic Veterinari; Universitat Autònoma de Barcelona; Barcelona Spain
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13
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Bąbolewska E, Brzezińska-Błaszczyk E. Human-derived cathelicidin LL-37 directly activates mast cells to proinflammatory mediator synthesis and migratory response. Cell Immunol 2015; 293:67-73. [PMID: 25577339 DOI: 10.1016/j.cellimm.2014.12.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Revised: 12/20/2014] [Accepted: 12/22/2014] [Indexed: 12/22/2022]
Abstract
Cathelicidins, a family of antimicrobial peptides, are well known for their role in host defense, particularly against bacteria. Apart from direct killing of microbes through the membrane disruption, cathelicidins can also exert immunomodulatory effects on cells involved in inflammatory processes. Considering the important role of mast cells in inflammation, the aim of this study was to determine whether LL-37, human-derived cathelicidin, can induce mast cell activation. We have observed that LL-37 directly stimulates mast cell to degranulation and production of some proinflammatory cytokines, but fails to induce cysteinyl leukotriene generation and release. We have also documented that LL-37 acts as a strong mast cell chemoattractant. In intracellular signaling in mast cells activated by LL-37 participates PLC/A2 and, in part, MAPKs, and PI3K. In conclusion, our results indicate that cathelicidins may enhance antibacterial inflammatory response via attracting mast cell to pathogen entry site and via induction of mast cell-derived mediator release.
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Affiliation(s)
- Edyta Bąbolewska
- Department of Experimental Immunology, Medical University of Łódź, Pomorska 251, 92-213 Łódź, Poland
| | - Ewa Brzezińska-Błaszczyk
- Department of Experimental Immunology, Medical University of Łódź, Pomorska 251, 92-213 Łódź, Poland.
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Bąbolewska E, Pietrzak A, Brzezińska-Błaszczyk E. Cathelicidin rCRAMP stimulates rat mast cells to generate cysteinyl leukotrienes, synthesize TNF and migrate: involvement of PLC/A2, PI3K and MAPK signaling pathways. Int Immunol 2014; 26:637-46. [PMID: 24990383 DOI: 10.1093/intimm/dxu069] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Cathelicidins represent a family of cationic peptides involved in host defense systems. Apart from exerting direct anti-microbial effects, cathelicidins can regulate immune responses by affecting the activity of cells playing a role in antibacterial defense. Taking into account that mast cells are critical components of host defense, the aim of this study was to determine whether rat cathelicidin-related anti-microbial peptide (rCRAMP) can influence mast cell activity. We have demonstrated that activation of fully mature rat mast cells with rCRAMP resulted in generation and release of cysteinyl leukotrienes (cysLTs). However, rCRAMP failed to induce mast cell degranulation and histamine release. We also found that rCRAMP stimulated rat mast cells to synthesize TNF, but not CXCL8. What is more, this peptide induced GM-CSF, IL-1β, CCL2 and CCL3 but not IL-33 mRNA expression in mast cells. Finally, we showed that this cathelicidin serves as potent chemoattractant for rat mast cells. rCRAMP-mediated cysLT synthesis and mast cell migration were strongly inhibited by IL-10 pre-treatment. With the use of specific inhibitors, we established that activation of PLC/A2 and ERK1/2, but not p38, was required for rCRAMP-induced mast cell stimulation, while PI3K-dependent pathway is involved in both TNF synthesis and mast cell migration. Our results suggest that cathelicidins can amplify inflammatory responses by causing mast cells accumulation and by stimulating these cells to release potent pro-inflammatory mediators.
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Affiliation(s)
- Edyta Bąbolewska
- Department of Experimental Immunology, Medical University of Łódź, 92-213 Łódź, Poland
| | - Anna Pietrzak
- Department of Experimental Immunology, Medical University of Łódź, 92-213 Łódź, Poland
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