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Hassoun D, Rose L, Blanc FX, Magnan A, Loirand G, Sauzeau V. Bronchial smooth muscle cell in asthma: where does it fit? BMJ Open Respir Res 2022; 9:9/1/e001351. [PMID: 36109087 PMCID: PMC9478857 DOI: 10.1136/bmjresp-2022-001351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Accepted: 09/04/2022] [Indexed: 11/04/2022] Open
Abstract
Asthma is a frequent respiratory condition whose pathophysiology relies on altered interactions between bronchial epithelium, smooth muscle cells (SMC) and immune responses. Those leads to classical hallmarks of asthma: airway hyper-responsiveness, bronchial remodelling and chronic inflammation. Airway smooth muscle biology and pathophysiological implication in asthma are now better understood. Precise deciphering of intracellular signalling pathways regulating smooth muscle contraction highlighted the critical roles played by small GTPases of Rho superfamily. Beyond contractile considerations, active involvement of airway smooth muscle in bronchial remodelling mechanisms is now established. Not only cytokines and growth factors, such as fibroblats growth factor or transforming growth factor-β, but also extracellular matrix composition have been demonstrated as potent phenotype modifiers for airway SMC. Although basic science knowledge has grown significantly, little of it has translated into improvement in asthma clinical practice. Evaluation of airway smooth muscle function is still limited to its contractile activity. Moreover, it relies on tools, such as spirometry, that give only an overall assessment and not a specific one. Interesting technics such as forced oscillometry or specific imagery (CT and MRI) give new perspectives to evaluate other aspects of airway muscle such as bronchial remodelling. Finally, except for the refinement of conventional bronchodilators, no new drug therapy directly targeting airway smooth muscle proved its efficacy. Bronchial thermoplasty is an innovative and efficient therapeutic strategy but is only restricted to a small proportion of severe asthmatic patients. New diagnostic and therapeutic strategies specifically oriented toward airway smooth muscle are needed to improve global asthma care.
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Affiliation(s)
- Dorian Hassoun
- Nantes Université, CHU Nantes, CNRS, INSERM, l'institut du thorax, F-44000 Nantes, France
| | - Lindsay Rose
- Nantes Université, CNRS, INSERM, l'institut du thorax, F-44000 Nantes, Pays de la Loire, France
| | - François-Xavier Blanc
- Nantes Université, CHU Nantes, CNRS, INSERM, l'institut du thorax, F-44000 Nantes, France
| | - Antoine Magnan
- INRAe, UMR 0892, Hôpital Foch, Suresnes, France.,Université Versailles-Saint-Quentin-en-Yvelines Paris-Saclay, Versailles, France
| | - Gervaise Loirand
- Nantes Université, CNRS, INSERM, l'institut du thorax, F-44000 Nantes, Pays de la Loire, France
| | - Vincent Sauzeau
- Nantes Université, CNRS, INSERM, l'institut du thorax, F-44000 Nantes, Pays de la Loire, France
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Pastwińska J, Walczak-Drzewiecka A, Łukasiak M, Ratajewski M, Dastych J. Hypoxia regulates human mast cell adhesion to fibronectin via the PI3K/AKT signaling pathway. Cell Adh Migr 2021; 14:106-117. [PMID: 32427041 PMCID: PMC7250187 DOI: 10.1080/19336918.2020.1764690] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
A decrease in oxygen concentration is a hallmark of inflammatory reactions resulting from infection or homeostasis disorders. Mast cells interact with extracellular matrix and other cells by adhesion receptors. We investigated the effect of hypoxia on integrin-mediated mast cell adhesion to fibronectin. We found that it was mediated by the α5/β1 receptor and that hypoxia significantly upregulated this process. Hypoxia-mediated increases in mast cell adhesion occurred without increased surface expression of integrins, suggesting regulation by inside-out integrin signaling. Hypoxia also mediated an increase in phosphorylation of Akt, and PI3’kinase inhibitors abolished hypoxia-mediated mast cell adhesion. Hypoxia upregulates the function of integrin receptors by PI3’ kinase-dependent signaling. This process might be important for the location of mast cells at inflammatory sites
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Affiliation(s)
- Joanna Pastwińska
- Laboratory of Cellular Immunology, Institute of Medical Biology, Polish Academy of Sciences, Lodz, Poland.,Department of Experimental Immunology, Medical University of Lodz, Lodz, Poland
| | - Aurelia Walczak-Drzewiecka
- Laboratory of Cellular Immunology, Institute of Medical Biology, Polish Academy of Sciences, Lodz, Poland
| | - Magdalena Łukasiak
- Laboratory of Cellular Immunology, Institute of Medical Biology, Polish Academy of Sciences, Lodz, Poland
| | - Marcin Ratajewski
- Laboratory of Epigenetics, Institute of Medical Biology, Polish Academy of Sciences, Lodz, Poland
| | - Jarosław Dastych
- Laboratory of Cellular Immunology, Institute of Medical Biology, Polish Academy of Sciences, Lodz, Poland
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Pastwińska J, Żelechowska P, Walczak-Drzewiecka A, Brzezińska-Błaszczyk E, Dastych J. The Art of Mast Cell Adhesion. Cells 2020; 9:E2664. [PMID: 33322506 PMCID: PMC7764012 DOI: 10.3390/cells9122664] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/05/2020] [Accepted: 12/10/2020] [Indexed: 02/07/2023] Open
Abstract
Cell adhesion is one of the basic phenomena occurring in a living organism, affecting many other processes such as proliferation, differentiation, migration, or cell viability. Mast cells (MCs) are important elements involved in defending the host against various pathogens and regulating inflammatory processes. Due to numerous mediators, they are contributing to the modulation of many basic cellular processes in a variety of cells, including the expression and functioning of different adhesive molecules. They also express themselves many adhesive proteins, including ICAM-1, ICAM-3, VCAM-1, integrins, L-selectin, E-cadherin, and N-cadherin. These molecules enable MCs to interact with other cells and components of the extracellular matrix (ECM), creating structures such as adherens junctions and focal adhesion sites, and triggering a signaling cascade. A thorough understanding of these cellular mechanisms can create a better understanding of MC biology and reveal new goals for MC targeted therapy. This review will focus on the current knowledge of adhesion mechanisms with the involvement of MCs. It also provides insight into the influence of MCs or MC-derived mediators on the adhesion molecule expression in different cells.
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Affiliation(s)
- Joanna Pastwińska
- Laboratory of Cellular Immunology, Institute of Medical Biology, Polish Academy of Sciences, 93-232 Lodz, Poland; (J.P.); (A.W.-D.)
- Department of Experimental Immunology, Medical University of Lodz, 92-213 Lodz, Poland; (P.Ż.); (E.B.-B.)
| | - Paulina Żelechowska
- Department of Experimental Immunology, Medical University of Lodz, 92-213 Lodz, Poland; (P.Ż.); (E.B.-B.)
| | - Aurelia Walczak-Drzewiecka
- Laboratory of Cellular Immunology, Institute of Medical Biology, Polish Academy of Sciences, 93-232 Lodz, Poland; (J.P.); (A.W.-D.)
| | - Ewa Brzezińska-Błaszczyk
- Department of Experimental Immunology, Medical University of Lodz, 92-213 Lodz, Poland; (P.Ż.); (E.B.-B.)
| | - Jarosław Dastych
- Laboratory of Cellular Immunology, Institute of Medical Biology, Polish Academy of Sciences, 93-232 Lodz, Poland; (J.P.); (A.W.-D.)
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Lu L, Arizmendi N, Kulka M, Unsworth LD. The Spontaneous Adhesion of BMMC onto Self-Assembled Peptide Nanoscaffold without Activation Inhibits Its IgE-Mediated Degranulation. Adv Healthc Mater 2017; 6. [PMID: 28665558 DOI: 10.1002/adhm.201700334] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 05/18/2017] [Indexed: 11/11/2022]
Abstract
Mast cells play a distinct role in the innate immune response. Engineered microenvironments for the express purpose of influencing mast cell activity will provide a novel means of designing biomaterials, as well as a means to systematically investigate mast cell biology in a 3D setting. Here, the effect of nanoscaffolds composed of self-assembling peptides, namely (RADA)4 , on bone-marrow-derived murine mast cell (BMMC) activity is reported. Unlike most studies that stimulate mast cells to induce adhesion, this results show that BMMCs spontaneously adhere to the artificial nanoscaffold without initiating their activation. It is observed that the classical immunoglobulin (IgE) antigen-mediated degranulation of adhered BMMC is inhibited by the nanoscaffold, while non-IgE (A23187)-induced degranulation is unaffected. The inhibition of IgE-antigen-mediated degranulation is likely a result of inhibited molecular diffusion within the matrix; antigen diffusion, IgE-FcεRI complex shuttling, and/or formation of multiple IgE-FcεRI clusters may be physically hindered in the presence of the polyvalent nanofiber network. Moreover, the IgE/antigen-induced inflammatory cytokine tumor necrosis factor α release from adherent BMMCs is significantly reduced likely due to interaction with the nanofiber matrix. This work is considered the first step in quantifying mast cell activity in artificial matrices composed of self-assembling peptides.
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Affiliation(s)
- Lei Lu
- DICE 13‐390 Department of Chemical and Materials Engineering University of Alberta 9211‐116 Street NW Edmonton AB T6G 1H9 Canada
- National Institute for Nanotechnology 11421 Saskatchewan Dr NW Edmonton AB T6G 2M93 Canada
| | - Narcy Arizmendi
- National Institute for Nanotechnology 11421 Saskatchewan Dr NW Edmonton AB T6G 2M93 Canada
| | - Marianna Kulka
- National Institute for Nanotechnology 11421 Saskatchewan Dr NW Edmonton AB T6G 2M93 Canada
- Department of Medical Microbiology and Immunology University of Alberta Edmonton AB T6G 2E1 Canada
| | - Larry D. Unsworth
- DICE 13‐390 Department of Chemical and Materials Engineering University of Alberta 9211‐116 Street NW Edmonton AB T6G 1H9 Canada
- National Institute for Nanotechnology 11421 Saskatchewan Dr NW Edmonton AB T6G 2M93 Canada
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Marcatti Amarú Maximiano W, Marino Mazucato V, Tambasco de Oliveira P, Célia Jamur M, Oliver C. Nanotextured titanium surfaces stimulate spreading, migration, and growth of rat mast cells. J Biomed Mater Res A 2017; 105:2150-2161. [DOI: 10.1002/jbm.a.36076] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Revised: 03/20/2017] [Accepted: 03/24/2017] [Indexed: 12/14/2022]
Affiliation(s)
- William Marcatti Amarú Maximiano
- Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirao Preto Medical School; University of Sao Paulo; Brazil
| | - Vivian Marino Mazucato
- Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirao Preto Medical School; University of Sao Paulo; Brazil
| | - Paulo Tambasco de Oliveira
- Department of Morphology, Stomatology and Basic Pathology, School of Dentistry; University of Sao Paulo; Brazil
| | - Maria Célia Jamur
- Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirao Preto Medical School; University of Sao Paulo; Brazil
| | - Constance Oliver
- Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirao Preto Medical School; University of Sao Paulo; Brazil
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Numata T, Ito T, Maeda T, Egusa C, Tsuboi R. IL-33 promotes ICAM-1 expression via NF-kB in murine mast cells. Allergol Int 2016; 65:158-165. [PMID: 26666474 DOI: 10.1016/j.alit.2015.10.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 10/16/2015] [Accepted: 10/19/2015] [Indexed: 10/22/2022] Open
Abstract
BACKGROUND IL-33, a member of the IL-1 cytokine family, binds to heterodimeric receptors ST2 and IL-1 receptor accessory protein, and activates Th2-type immune responses. The signals from the ST2 receptor are mediated by the two major pathways, including AP-1 and NF-κB molecules. The present study examined whether IL-33 induced ICAM-1 expression in bone marrow-derived mast cells (BMMCs). METHODS BMMCs from C57BL/6J mice, cultured in media containing IL-3 (20 ng/ml), were treated with IL-33 (50 ng/ml) for up to 72 h. ICAM-1 expression with mRNA and protein, degranulation of siRNA ICAM-1 transfected BMMCs, and cell adhesion were analyzed. In the in vivo part of the experiment rIL-33 (500 ng) was injected intradermally into the ear pinnae of mice and any resulting pathological changes were assessed. RESULTS ICAM-1 mRNA expression was increased one hour after IL-33 stimulation while ICAM-1 protein attained maximum expression levels 24 h after IL-33 stimulation. Moreover, IL-33-treated BMMCs showed increased cell adhesion to the LFA-1-coated plate. However, siRNA ICAM-1 transfected BMMCs did not affect Ag/IgE-mediated degranulation level compared to the wild control siRNA. Pre-treatment with a NF-κB inhibitor dramatically reduced ICAM-1 expression in IL-33-treated BMMCs, suggesting the involvement of NF-κB in the process. In vivo study, at 6 h after IL-33 treatment, MCs histologically showed up-regulated ICAM-1 expression though the number of tryptase-positive cells did not change. CONCLUSIONS These data suggest that MCs increase ICAM-1 expression and activate LFA-1 positive cells in the early phase of skin inflammation in response to IL-33.
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Saluja R, Ketelaar ME, Hawro T, Church MK, Maurer M, Nawijn MC. The role of the IL-33/IL-1RL1 axis in mast cell and basophil activation in allergic disorders. Mol Immunol 2014; 63:80-5. [PMID: 25017307 DOI: 10.1016/j.molimm.2014.06.018] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Accepted: 06/08/2014] [Indexed: 12/15/2022]
Abstract
Interleukin-33 (IL-33) is a recently discovered cytokine that belongs to the IL-1 superfamily and acts as an important regulator in several allergic disorders. It is considered to function as an alarmin, or danger cytokine, that is released upon structural cell damage. IL-33 activates several immune cells, including Th2 cells, mast cells and basophils, following its interaction with a cell surface heterodimer consisting of an IL-1 receptor-related protein ST2 (IL-1RL1) and IL-1 receptor accessory protein (IL-1RAcP). This activation leads to the production of a variety of Th2-like cytokines that mediate allergic-type immune responses. Thus, IL-33 appears to be a double-edged sword because, in addition to its important contribution to host defence, it exacerbates allergic responses, such as allergic rhinitis and asthma. A major purported mechanism of IL-33 in allergy is the activation of mast cells to produce a variety of pro-inflammatory cytokines and chemokines. In this review, we summarize the current knowledge regarding the genetics and physiology of IL-33 and IL-1RL1 and its association with different allergic diseases by focusing on its effects on mast cells and basophils.
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Affiliation(s)
- Rohit Saluja
- Department of Dermatology and Allergy, Allergie-Centrum-Charité, Charité - Universitätsmedizin Berlin, Berlin, Germany.
| | - Maria E Ketelaar
- University of Groningen, Laboratory of Allergology and Pulmonary Diseases, Department of Pathology and Medical Biology, University Medical Center Groningen, Groningen, The Netherlands; GRIAC research institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Tomasz Hawro
- Department of Dermatology and Allergy, Allergie-Centrum-Charité, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Martin K Church
- Department of Dermatology and Allergy, Allergie-Centrum-Charité, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Marcus Maurer
- Department of Dermatology and Allergy, Allergie-Centrum-Charité, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Martijn C Nawijn
- University of Groningen, Laboratory of Allergology and Pulmonary Diseases, Department of Pathology and Medical Biology, University Medical Center Groningen, Groningen, The Netherlands; GRIAC research institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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Dráber P, Sulimenko V, Dráberová E. Cytoskeleton in mast cell signaling. Front Immunol 2012; 3:130. [PMID: 22654883 PMCID: PMC3360219 DOI: 10.3389/fimmu.2012.00130] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2012] [Accepted: 05/05/2012] [Indexed: 11/13/2022] Open
Abstract
Mast cell activation mediated by the high affinity receptor for IgE (FcεRI) is a key event in allergic response and inflammation. Other receptors on mast cells, as c-Kit for stem cell factor and G protein-coupled receptors (GPCRs) synergistically enhance the FcεRI-mediated release of inflammatory mediators. Activation of various signaling pathways in mast cells results in changes in cell morphology, adhesion to substrate, exocytosis, and migration. Reorganization of cytoskeleton is pivotal in all these processes. Cytoskeletal proteins also play an important role in initial stages of FcεRI and other surface receptors induced triggering. Highly dynamic microtubules formed by αβ-tubulin dimers as well as microfilaments build up from polymerized actin are affected in activated cells by kinases/phosphatases, Rho GTPases and changes in concentration of cytosolic Ca(2+). Also important are nucleation proteins; the γ-tubulin complexes in case of microtubules or Arp 2/3 complex with its nucleation promoting factors and formins in case of microfilaments. The dynamic nature of microtubules and microfilaments in activated cells depends on many associated/regulatory proteins. Changes in rigidity of activated mast cells reflect changes in intermediate filaments build up from vimentin. This review offers a critical appraisal of current knowledge on the role of cytoskeleton in mast cells signaling.
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Affiliation(s)
- Pavel Dráber
- Department of Biology of Cytoskeleton, Institute of Molecular Genetics, Academy of Sciences of the Czech RepublicPrague, Czech Republic
| | - Vadym Sulimenko
- Department of Biology of Cytoskeleton, Institute of Molecular Genetics, Academy of Sciences of the Czech RepublicPrague, Czech Republic
| | - Eduarda Dráberová
- Department of Biology of Cytoskeleton, Institute of Molecular Genetics, Academy of Sciences of the Czech RepublicPrague, Czech Republic
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Shi MA, Shi GP. Different roles of mast cells in obesity and diabetes: lessons from experimental animals and humans. Front Immunol 2012; 3:7. [PMID: 22566893 PMCID: PMC3341969 DOI: 10.3389/fimmu.2012.00007] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Accepted: 01/09/2012] [Indexed: 12/18/2022] Open
Abstract
Mast cells (MCs) play an important role in allergic hyperresponsiveness and in defending microorganism infections. Recent studies of experimental animals and humans have suggested that MCs participate in obesity and diabetes. MC distribution and activities in adipose tissues may vary, depending on the locations of different adipose tissues. In addition to releasing inflammatory mediators to affect adipose tissue extracellular matrix remodeling and to promote inflammatory cell recruitment and proliferation, MCs directly and indirectly interact and activate adipose tissue cells, including adipocytes and recruited inflammatory cells. Plasma MC protease levels are significantly higher in obese patients than in lean subjects. Experimental obese animals lose body weight after MC inactivation. MC functions in diabetes are even more complicated, and depend on the type of diabetes and on different diabetic complications. Both plasma MC proteases and MC activation essential immunoglobulin E levels are significant risk factors for human pre-diabetes and diabetes mellitus. MC stabilization prevents diet-induced diabetes and improves pre-established diabetes in experimental animals. MC depletion or inactivation can improve diet-induced type 2 diabetes and some forms of type 1 diabetes, but also can worsen other forms of type 1 diabetes, at least in experimental animals. Observations from animal and human studies have suggested beneficial effects of treating diabetic patients with MC stabilizers. Some diabetic patients may benefit from enhancing MC survival and proliferation – hypotheses that merit detailed basic researches and clinical studies.
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Affiliation(s)
- Michael A Shi
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School Boston, MA, USA
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Alkhouri H, Hollins F, Moir LM, Brightling CE, Armour CL, Hughes JM. Human lung mast cells modulate the functions of airway smooth muscle cells in asthma. Allergy 2011; 66:1231-41. [PMID: 21557752 DOI: 10.1111/j.1398-9995.2011.02616.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Activated mast cell densities are increased on the airway smooth muscle in asthma where they may modulate muscle functions and thus contribute to airway inflammation, remodelling and airflow obstruction. OBJECTIVES To determine the effects of human lung mast cells on the secretory and proliferative functions of airway smooth muscle cells from donors with and without asthma. METHODS Freshly isolated human lung mast cells were stimulated with IgE/anti-IgE. Culture supernatants were collected after 2 and 24 h and the mast cells lysed. The supernatants/lysates were added to serum-deprived, subconfluent airway smooth muscle cells for up to 48 h. Released chemokines and extracellular matrix were measured by ELISA, proliferation was quantified by [(3) H]-thymidine incorporation and cell counting, and intracellular signalling by phospho-arrays. RESULTS Mast cell 2-h supernatants reduced CCL11 and increased CXCL8 and fibronectin production from both asthmatic and nonasthmatic muscle cells. Leupeptin reversed these effects. Mast cell 24-h supernatants and lysates reduced CCL11 release from both muscle cell types but increased CXCL8 release by nonasthmatic cells. The 24-h supernatants also reduced asthmatic, but not nonasthmatic, muscle cell DNA synthesis and asthmatic cell numbers over 5 days through inhibiting extracellular signal-regulated kinase (ERK) and phosphatidylinositol (PI3)-kinase pathways. However, prostaglandins, thromboxanes, IL-4 and IL-13 were not involved in reducing the proliferation. CONCLUSIONS Mast cell proteases and newly synthesized products differentially modulated the secretory and proliferative functions of airway smooth muscle cells from donors with and without asthma. Thus, mast cells may modulate their own recruitment and airway smooth muscle functions locally in asthma.
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Affiliation(s)
- H Alkhouri
- Faculty of Pharmacy, University of Sydney, Sydney, NSW 2006, Australia.
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de F Carvalho V, Campos LV, Farias-Filho FA, Florim LT, Barreto EO, Pirmez C, Savino W, Martins MA, e Silva PMR. Suppression of allergic inflammatory response in the skin of alloxan-diabetic rats: relationship with reduced local mast cell numbers. Int Arch Allergy Immunol 2008; 147:246-54. [PMID: 18594156 DOI: 10.1159/000142049] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2007] [Accepted: 03/03/2008] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Diabetic patients are refractory to allergic inflammatory diseases. In this study, the influence of alloxan-induced diabetes on allergic skin inflammation was investigated. METHODS Diabetes was induced by intravenous injection of alloxan into male Wistar rats, and the analyses were performed 21 days later. Animals were actively sensitized with a mixture of aluminium hydroxide plus ovalbumin and challenged intradermally with ovalbumin on day 14. RESULTS Diabetic sensitized rats exhibited a less pronounced antigen-induced protein extravasation in the dorsal skin when compared with normal animals. Also, fragments of the dorsal subcutaneous tissue from diabetic sensitized rats showed a reduction in histamine release after stimulation with antigen in vitrowhen compared with fragments obtained from nondiabetic sensitized rats. Optical microscopy analysis revealed that the dorsal skin of diabetic rats showed a marked reduction in dermis thickness, as compared with that seen in normal animals. A significant decrease in the number of skin mast cells was also noted, a phenomenon that paralleled with the reduction in the expression of extracellular matrix components laminin, fibronectin and collagen. Administration of insulin into diabetic rats restored basal mast cell numbers as well as the levels of laminin, fibronectin and collagen. CONCLUSIONS Our findings show that alloxan diabetes induces downregulation of the skin allergic inflammatory response in rats, and this was correlated with reduction in local mast cell numbers and expression of extracellular matrix components. Lastly, these alterations were reversed with insulin treatment.
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Affiliation(s)
- Vinicius de F Carvalho
- Laboratório de Inflamação, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
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Immunology. PEDIATRIC ALLERGY, ASTHMA AND IMMUNOLOGY 2008. [PMCID: PMC7122665 DOI: 10.1007/978-3-540-33395-1_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The concept of forbidden foods that should not be eaten goes back to the Garden of Eden and apart from its religious meanings it may also have foreshadowed the concept of foods that can provoke adverse reactions. Thus we could say that allergic diseases have plagued mankind since the beginning of life on earth. The prophet Job was affected by a condition that following the rare symptoms described by the Holy Bible might be identified as a severe form of atopic dermatitis (AD). The earliest record of an apparently allergic reaction is 2621 B.C., when death from stinging insects was first described by hieroglyphics carved into the walls of the tomb of Pharaoh Menes depicting his death following the sting of a wasp. In 79 A.D., the death of the Roman admiral Pliny the Elder was ascribed to the SO2-rich gases emanating from the eruption of Mount Vesuvius. Hippocrates (460–377 B.C.) was probably the first to describe how cow’s milk (CM) could cause gastric upset and hives, proposing dietetic measures including both treatment and prevention for CM allergy.
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Kalesnikoff J, Rios EJ, Chen CC, Nakae S, Zabel BA, Butcher EC, Tsai M, Tam SY, Galli SJ. RabGEF1 regulates stem cell factor/c-Kit-mediated signaling events and biological responses in mast cells. Proc Natl Acad Sci U S A 2006; 103:2659-64. [PMID: 16533754 PMCID: PMC1413845 DOI: 10.1073/pnas.0511191103] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
We recently reported that RabGEF1 is a negative regulator of high-affinity Fc receptor for IgE (Fc epsilonRI)-dependent mast cell activation and that mice lacking RabGEF1 develop severe skin inflammation and increased numbers of dermal mast cells. To better understand how RabGEF1 can regulate signaling events and biological responses in mast cells, we examined the responses of bone marrow-derived cultured mast cells (BMCMCs) from wild-type (+/+) and Rabgef1 knockout (-/-) mice after stimulation with the c-Kit ligand, stem cell factor (SCF), an important regulator of mast cell development, survival, proliferation, and activation. We found that RabGEF1-deficient mast cells exhibited enhanced and prolonged activation of Ras and extracellular regulated kinase, and significantly elevated IL-6 secretion, after stimulation with SCF. SCF-induced activation of c-Jun N-terminal kinase was increased in Rabgef1-/- BMCMCs, but without corresponding significant increases in SCF-induced migration or adhesion. SCF-mediated activation of the survival-enhancing kinase, Akt, also was increased in Rabgef1-/- BMCMCs, and these cells had a survival advantage over their +/+ counterparts in vitro. Despite enhanced Ras activation in the absence of RabGEF1, SCF-induced proliferation was lower in Rabgef1-/- BMCMCs compared with their +/+ counterparts. Finally, we found that c-Kit internalization was delayed in the absence of RabGEF1, probably reflecting a positive role for RabGEF1 in the regulation of endocytic events, and that infection of Rabgef1-/- BMCMCs with a wild-type RabGEF1 lentiviral construct normalized c-Kit internalization to the levels seen in +/+ BMCMCs. Thus, RabGEF1 plays a critical role in the regulation of SCF/c-Kit-mediated signaling events and biological responses in mast cells.
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Affiliation(s)
- Janet Kalesnikoff
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305-5324
| | - Eon J. Rios
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305-5324
| | - Ching-Cheng Chen
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305-5324
| | - Susumu Nakae
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305-5324
| | - Brian A. Zabel
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305-5324
| | - Eugene C. Butcher
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305-5324
| | - Mindy Tsai
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305-5324
| | - See-Ying Tam
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305-5324
| | - Stephen J. Galli
- Department of Pathology, Stanford University School of Medicine, Stanford, CA 94305-5324
- *To whom correspondence should be addressed at:
Pathology, L-235, Stanford University School of Medicine, 300 Pasteur Drive, Stanford, CA 94305-5324. E-mail:
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Jonsson KO, Persson E, Fowler CJ. The cannabinoid CB2 receptor selective agonist JWH133 reduces mast cell oedema in response to compound 48/80 in vivo but not the release of beta-hexosaminidase from skin slices in vitro. Life Sci 2005; 78:598-606. [PMID: 16111718 DOI: 10.1016/j.lfs.2005.05.059] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2004] [Accepted: 05/03/2005] [Indexed: 11/21/2022]
Abstract
In a recent study so far published in abstract form, it was reported that the CB(2) receptor selective agonist AM1241 diminishes oedema produced as a result of mast cell degranulation in vivo. It is, however, not known whether other structurally different CB(2) agonists share this effect, and whether this is due to a direct effect on mast cell function. In the present study, we have investigated the effects of JWH133, a CB(2) receptor selective agonist, together with the anti-inflammatory agent palmitoylethanolamide and its analogue palmitoylisopropylamide, on compound 48/80-induced oedema and degranulation in vivo and in vitro. JWH133 (20 and 200 microg/mouse i.p.) significantly reduced the ability of compound 48/80 to induce oedema in vivo in the anaesthetised mouse following its injection into the ear pinna. Palmitoylethanolamide (200 microg/mouse i.p) also reduced the response to compound 48/80, whereas no firm conclusions could be drawn for palmitoylisopropylamide (20 and 200 microg/mouse i.p.). The CB(2) selective antagonist/inverse agonist SR144528 (60 microg/mouse i.p.) appeared to produce anti-inflammatory effects per se in this model, making it hard to interpret the effects of JWH133 in terms of CB(2) receptor mediated activation. In contrast to the situation in vivo, neither JWH133 (0.3 and 3 microM) nor palmitoylethanolamide (10 microM) affected mast cell degranulation, measured by following the release of the granular protein beta-hexosaminidase, produced by compound 48/80 in vitro in mouse skin slices. The two compounds were also ineffective in inhibiting the binding of [(3)H]pyrilamine to histamine H(1) receptors in vitro. It is concluded that the ability of JWH133 to affect mast cell dependent inflammation in vivo may be mediated by an indirect action upon the mast cells.
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Affiliation(s)
- Kent-Olov Jonsson
- Department of Pharmacology and Clinical Neuroscience, Umeå University, Sweden.
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16
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Ten Broeke R, Blalock JE, Nijkamp FP, Folkerts G. Calcium sensors as new therapeutic targets for asthma and chronic obstructive pulmonary disease. Clin Exp Allergy 2004; 34:170-6. [PMID: 14987293 DOI: 10.1111/j.1365-2222.2004.01908.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- R Ten Broeke
- Department of Pharmacology and Pathophysiology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands.
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17
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Lam V, Kalesnikoff J, Lee CWK, Hernandez-Hansen V, Wilson BS, Oliver JM, Krystal G. IgE alone stimulates mast cell adhesion to fibronectin via pathways similar to those used by IgE + antigen but distinct from those used by Steel factor. Blood 2003; 102:1405-13. [PMID: 12702510 DOI: 10.1182/blood-2002-10-3176] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We recently demonstrated that immunoglobulin E (IgE), in the absence of cross-linking agents, activates signaling pathways in healthy murine bone marrow-derived mast cells (BMMCs) and that this activation enhances BMMC survival, at least in part, via secretion of autocrine-acting cytokines. We report herein that IgE alone also triggers the adhesion of both BMMCs and connective tissue mast cells (CTMCs) to the connective tissue component, fibronectin (FN). This adhesion occurs to the same extent as that triggered by optimal levels of Steel factor (SF) or IgE + antigen (IgE + Ag) and is mediated by an increased avidity of the integrin very late antigen 5 (VLA-5). Moreover, this IgE-induced adhesion, which is prolonged compared with that elicited by SF or IgE + Ag, requires phosphatidylinositol 3-kinase (PI3K), phospholipase C gamma (PLCgamma), and extracellular calcium but not extracellular-regulated kinase (Erk) or p38. Interestingly, we found, using the calcium channel blocker, 2-APB (2-aminoethoxydiphenyl borate) and Lyn-/- BMMCs that both IgE- and IgE + Ag-induced adhesion to FN require extracellular calcium entry, whereas SF does not. Furthermore, our data suggest that FN acts synergistically with IgE to prolong intracellular phosphorylation events and to enhance IgE-induced inflammatory cytokine production and BMMC survival.
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Affiliation(s)
- Vivian Lam
- Terry Fox Laboratory, BC Cancer Agency, Vancouver, BC, Canada
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18
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Piconi S, Trabattoni D, Iemoli E, Fusi ML, Villa ML, Milazzo F, Clerici M. Immune profiles of patients with chronic idiopathic urticaria. Int Arch Allergy Immunol 2002; 128:59-66. [PMID: 12037402 DOI: 10.1159/000058004] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND The immunologic characterization of chronic idiopathic urticaria (CIU) is still incomplete. In particular, it is not known if positivity to the intradermal autologous serum skin test (ASST) identifies an immunologic subset of CIU patients. METHODS Nineteen CIU patients and 15 healthy controls were enrolled in the study. A diagnostic flowchart was designed to select CIU patients, who were then analyzed by ASST. Cytokine and chemokine production and the expression of adhesion molecules was measured in patients and controls. RESULTS In CIU patients compared to controls, it was found that (1) TNF-alpha, IL-10, MIP-1alpha and RANTES production was augmented and IL-2 and INF-gamma reduced, and (2) CD44, CD11a and CD62L expression on CD4 and CD8 cells was augmented. Additionally, TNF-alpha and chemokine production was significantly increased in CIU patients with a negative ASST (p-; n = 10) compared to patients with a positive response to the test. CONCLUSIONS The presence of an inflammatory process in CIU patients is suggested by the findings that the production of both TNF-alpha and chemokines as well as the expression of adhesion molecules is increased in these patients. Similarly to what is seen in rheumatoid arthritis, augmented IL-10 production might be secondary to the attempt to hamper the inflammatory milieu. Immune profiles are particularly altered in CIU p- patients, in whom a more aggressive therapeutic strategy might be considered.
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Affiliation(s)
- Stefania Piconi
- First Department of Infectious Disease and Allergy Unit, L. Sacco Hospital, Milan, Italy
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19
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Cho SH, Anderson AJ, Oh CK. Importance of mast cells in the pathophysiology of asthma. Clin Rev Allergy Immunol 2002; 22:161-74. [PMID: 11975421 DOI: 10.1385/criai:22:2:161] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Seong H Cho
- Division of Allergy and Immunology, Department of Pediatrics, Harbor-UCLA Medical Center, School of Medicine, Bldg. N25, 1000 W. Carson St., University of California, Los Angeles, Torrance, CA 90509, USA
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20
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Lorentz A, Schuppan D, Gebert A, Manns MP, Bischoff SC. Regulatory effects of stem cell factor and interleukin-4 on adhesion of human mast cells to extracellular matrix proteins. Blood 2002; 99:966-72. [PMID: 11807000 DOI: 10.1182/blood.v99.3.966] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Mast cells are inflammatory and immunoregulatory cells resident in tissues. They develop from bone marrow-derived progenitor cells that enter the tissue through the blood circulation. The specific localization and migration of mast cells in tissues is dependent on their interaction with extracellular matrix (ECM) proteins. Adhesion of human mast cells isolated from intestinal mucosa and cultured in the presence of stem cell factor (SCF) to ECM proteins is analyzed. It was observed that SCF is a unique cytokine enhancing mast cell adhesion to all tested ECM proteins (fibronectin, laminin, collagen I, III, IV, VI, XIV) up to 5-fold, particularly to fibronectin (54% +/- 12% of mast cells) and to denatured collagens (40% +/- 12% on cyanogen bromide-cleaved peptides of collagen I). Most noteworthy, preculture of mast cells with interleukin-4 (IL-4), in addition to SCF, reduced their potency to adhere to ECM proteins to one third compared to mast cells cultured with SCF alone. Mast cell adhesion was preferentially mediated by beta1 integrins, and most cells expressed the ECM-binding integrins alpha2beta1, alpha3beta1, alpha4beta1, alpha5beta1, and alphaVbeta3. SCF-induced mast cell adhesion was totally blocked by wortmannin and apigenin, indicating an involvement of phosphatidylinositol 3-kinase and mitogen-activated protein kinase, and it was related to an up-regulation of the HUTS-21 beta1 epitope, which is associated with an activated conformation of beta1. In conclusion, these data indicate that SCF induces the adhesion of cultured mast cells to ECM proteins, whereas IL-4 may promote detachment from the ECM.
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Affiliation(s)
- Axel Lorentz
- Department of Internal Medicine/Gastroenterology, Medical School of Hannover, D-30623 Hannover, Germany
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21
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Inamura H, Kurosawa M, Kuwasaki T, Kamada Y, Kayaba H, Chihara J. Expression of adhesion molecules on cord-blood-derived, cultured human mast cells and effect of dexamethasone on intercellular adhesion molecule-1 expression on the mast cells treated by phorbol myristate acetate. Allergy 2002. [DOI: 10.1034/j.1398-9995.2001.00001.x-i1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Gulubova M, Vodenicharov A. Structural examination of tryptase-, and VIP-positive mast cells in the common bile duct of patients with lithiasis. Acta Histochem 2001; 103:437-52. [PMID: 11700949 DOI: 10.1078/0065-1281-00610] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The morphology of tryptase-, and vasoactive intestinal polypeptide (VIP)-positive mast cells was examined immunohistochemically in 38 common bile ducts collected from patients with secondary chronic cholangitis and varying degrees of inflammatory activity. Mast cells numbers in chronic exacerbated and chronic sclerotic cholangitis were significantly higher as compared with those in controls (72.4 cells/mm2 and 25.2 cells/mm2 vs. 5.9 cells/mm2; p < 0.0001, Student's t test). The increased number of tryptase-positive mast cells in chronic exacerbated cholangitis correlated with the severeness of inflammatory infiltration. In cases of chronic exacerbated cholangitis, the increased number of mast cells was detected in conjunction with active fibroplasia. In chronic sclerotic cholangitis mast cells were lower in number as compared with exacerbated cholangitis and were observed in relation with inactive fibrosis. Numerous VIP-positive mast cells were found in all patients with cholangitis. Ultrastructural immunocytochemistry showed tryptase positivity to be localized over either electron-dense or particulate granules with a mean diameter of 0.261+/-0.073 microm or 0.171+/-0.053 microm, respectively. VIP positivity was formed as a finely or coarsely granular pattern over larger electron-dense granules of 0.475+/-0.14 microm in diameter. Tryptase-positive mast cells were located mainly in and around surface and glandular epithelium. The involvement of tryptase- and VIP-positive mast cells in inflammation, fibrosis and epithelial reactions in the common bile duct is discussed.
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Affiliation(s)
- M Gulubova
- Department of General and Clinical Pathology, Faculty of Medicine, Thracian University, Stara Zagora, Bulgaria.
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Inagaki N, Nakai N, Kimata M, Kawasaki H, Nagai H. Recovery of purification-associated reduction in antigen-induced histamine release from rat peritoneal mast cells. Biol Pharm Bull 2001; 24:829-34. [PMID: 11456125 DOI: 10.1248/bpb.24.829] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Immunoglobulin E (IgE)-dependent histamine release from purified rat peritoneal mast cells (PMC) is very low in comparison to that from a non-purified preparation (PEC). The reduced histamine release from PMC is recovered or potentiated by reconstitution with separated non-mast cells (NMC). In the present study, further characterization was undertaken to elucidate the mechanisms involved. Sensitized mast cells were recovered from peritoneal cavities of rats, and purified by density gradient centrifugation with Percoll. Effects of NMC reconstitution, membrane fraction of NMC, NMC incubation supernatant, adhesion molecules and extracellular matrix proteins on IgE-dependent histamine release from PMC were examined. IgE-dependent histamine release was significantly potentiated by NMC reconstitution to PMC. The potentiation was dependent on the concentration of NMC reconstituted and reached a plateau after 30 min incubation. Increasing concentration of PMC did not affect the histamine release. Membrane fraction prepared from NMC also potentiated PMC histamine release in a dose-dependent manner. The potentiation reached a plateau in 5 min. Furthermore, incubation supernatant of NMC potentiated PMC histamine release. Antibodies against intercellular adhesion molecule (ICAM)-1, lymphocyte function-associated antigen (LFA)-1, very late activation antigen (VLA)-1, VLA-4 and VLA-6, and fibronectin did not affect the potentiation of PMC histamine release by NMC reconstitution. Fibronectin, laminin and collagen failed to potentiate PMC histamine release. These results indicate that the membrane component(s) of NMC in the rat peritoneal cavity seems to modulate IgE-dependent histamine release from peritoneal mast cells of rats, and that the active molecule(s) may be released from NMC. Adhesion molecules such as ICAM-1, LFA-1 and VLA are not involved.
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Affiliation(s)
- N Inagaki
- Department of Pharmacology, Gifu Pharmaceutical University, Japan.
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24
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Inamura H, Kurosawa M, Kuwasaki T, Kamada Y, Kayaba H, Chihara J. Expression of adhesion molecules on cord-blood-derived, cultured human mast cells and effect of dexamethasone on intercellular adhesion molecule-1 expression on the mast cells treated by phorbol myristate acetate. Allergy 2001. [DOI: 10.1034/j.1398-9995.2001.00011.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Affiliation(s)
- C Tkaczyk
- Laboratory of Allergic Diseases, National Institutes of Allergy and Inflammatory Diseases, National Institutes of Health, Building 10, Room 11C213, MSC 1881, 10 Center Drive, Bethesda, MD 20892-1881, USA
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Houtman R, Ten Broeke R, Blalock JE, Villain M, Koster AS, Nijkamp FP. Attenuation of very late antigen-5-mediated adhesion of bone marrow-derived mast cells to fibronectin by peptides with inverted hydropathy to EF-hands. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2001; 166:861-7. [PMID: 11145661 DOI: 10.4049/jimmunol.166.2.861] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Release of allergic mediators from mast cells is enhanced by very late Ag (VLA)-5-mediated interaction of these cells with fibronectin. In this report, we show that VLA-5-mediated adhesion of bone marrow-derived mast cells to fibronectin can be induced by two different pathways: first, FcepsilonRI clustering, which depends on calmodulin activation and extracellular Ca(2+), and, second, by Mn(2+) stimulation, which is independent of calmodulin activation and antagonized by Ca(2+). Previous studies have shown the presence of several cation-binding domains in VLA-5 that are homologous to the calcium-binding EF-hands of calmodulin. To show a role for EF-hands of different proteins in VLA-5-mediated adhesion, we used calcium-like peptides (CALP), CALP1 and CALP2, designed to bind to EF-hands based on inverted hydropathy. CALP1 and, more potently, CALP2 inhibited FcepsilonRI-induced adhesion to fibronectin via different mechanisms. The target for the effects of CALP1 and 2 on FcepsilonRI-induced adhesion and degranulation was intracellular and likely involved calmodulin. Interestingly only CALP2 was able to inhibit Mn(2+)-induced calmodulin-independent adhesion by interfering with an extracellular target, which is probably VLA-5. We conclude that CALP1 and 2 can inhibit VLA-5-mediated adhesion of mast cells to fibronectin through binding to EF-hands of multiple proteins, and that these peptides can be used as lead compounds for the development of future therapy against allergy.
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Affiliation(s)
- R Houtman
- Department of Pharmacology and Pathophysiology, Utrecht Institute for Pharmaceutical Sciences, Universiteit Utrecht, Utrecht, The Netherlands
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Abstract
Many cells participate in the pathogenesis of asthmatic inflammation. The mast cell is localized at the interface of the internal and external environment within the lung where it may respond to allergens and other exogenous stimuli. The activation of mast cells leads to the release of mediators that contribute to the early phase of asthmatic inflammation. Mast-cell-derived products may also contribute to the late-phase asthmatic response. This review summarizes the developmental biologic features of the mast cell, its receptor-mediated activation, and its range of preformed, newly synthesized, and induced mediators that contribute to asthmatic inflammation.
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Affiliation(s)
- C O Bingham
- Department of Medicine, Harvard Medical School, Division of Rheumatology, Immunology, and Allergy, Brigham and Women's Hospital, USA
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29
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Tkaczyk C, Villa I, Peronet R, David B, Chouaib S, Mécheri S. In vitro and in vivo immunostimulatory potential of bone marrow-derived mast cells on B- and T-lymphocyte activation. J Allergy Clin Immunol 2000; 105:134-42. [PMID: 10629463 DOI: 10.1016/s0091-6749(00)90188-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
BACKGROUND Mast cells, which play a unique role in inflammatory and allergic responses, have also been shown to actively participate to the build-up of protective host defense mechanisms. Recently, they have been shown to stimulate resting B cells and to form heterotypic aggregates with activated T cells, resulting in mast cell degranulation. OBJECTIVES Our aim is to investigate the cytokine requirements and the mechanisms by which murine mast cells activate resting B and T lymphocytes. METHODS Mouse bone marrow-derived mast cells (BMMCs) or peritoneal mast cells were cocultured with resting splenocytes. Activation of B and T lymphocytes was assessed by measuring cell proliferation, blast formation, and cytokine release. RESULTS We report that addition of IL-4-treated BMMCs to normal spleen cells resulted within 48 hours in a B- and T-cell activation with substantial amounts of the T(H1) cytokines IFN-gamma and IL-12 and no detectable IL-4. We also demonstrate that mature mast cells in the peritoneal cavity are able to induce spleen cell activation and cytokine release. Addition of antileukocyte function-associated antigen 1 and anti-intercellular adhesion molecule 1 to the cocultures completely abrogates mast cell-induced blast formation and cytokine release. Experiments performed in vivo indicate that spleen cells from mice injected with BMMCs sustain their capacity of proliferation and cytokine production in vitro without any further stimulation. CONCLUSION These observations suggest that mast cells may exert a helper effect on B and T lymphocytes, initiate T(H1)-type immune responses, and may participate, through this mechanism, in the downregulation of allergic responses.
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Affiliation(s)
- C Tkaczyk
- Unit¿e d'Immuno-Allergie, Institut Pasteur, Paris, France
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30
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Hamawy MM, Tsuchida M, Manthei ER, Dong Y, Fechner JE, Knechtle JS. Activation of T lymphocytes for adhesion and cytokine expression by toxin-conjugated anti-CD3 monoclonal antibodies. Transplantation 1999; 68:693-8. [PMID: 10507490 DOI: 10.1097/00007890-199909150-00016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Immunosuppressive drugs that target T cells are useful for prolonging allograft survival. The anti-CD3 immunotoxin FN18-CRM9 has been shown to effectively prolong renal allograft survival in a rhesus monkey model of transplantation. However, immunotoxin-treated monkeys showed increased levels of inflammatory cytokines and produced antibodies to donor proteins. To better understand the role of FN18-CRM9 in the production of cytokines and anti-donor antibodies in the monkey model, we examined whether this immunotoxin elicits functional responses in T cells. METHODS Purified normal rhesus monkey T cells (>98% purity) were incubated with immunotoxin FN18-CRM9 or the unconjugated anti-CD3 monoclonal antibodies and then examined for changes in protein tyrosine phosphorylation, adhesion to fibronectin, gene expression, and proliferation in the presence or absence of anti-CD28 monoclonal antibodies (mAb) and interleukin-2. RESULTS Immunotoxin treatment of T cells in vitro increased protein tyrosine phosphorylation, cell adhesion to the extracellular matrix, and expression of the inflammatory cytokines interferon-gamma and tumor necrosis factor-alpha. These immunotoxin effects were similar in magnitude to those induced by the unconjugated mAb. In contrast, immunotoxin-induced T cell proliferation was markedly less than that induced by the unconjugated mAb. Interestingly, the mitogenic molecules IL-2 and anti-CD28 mAb did not prevent immunotoxin-induced inhibition of cell proliferation. CONCLUSIONS The activation of T cells for protein phosphorylation, adhesion, and cytokine expression strongly suggests that the actions of FN18-CRM9 in vivo are not limited to the inhibition of protein synthesis.
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Affiliation(s)
- M M Hamawy
- Department of Surgery, University of Wisconsin, Madison 53792, USA
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Swann PG, Odom S, Zhou YJ, Szallasi Z, Blumberg PM, Draber P, Rivera J. Requirement for a negative charge at threonine 60 of the FcRgamma for complete activation of Syk. J Biol Chem 1999; 274:23068-77. [PMID: 10438475 DOI: 10.1074/jbc.274.33.23068] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Aggregation of FcepsilonRI on mast cells results in the phosphorylation of the FcepsilonRIgamma chain on tyrosine and threonine residues within the immunoreceptor tyrosine-based activation motif. In the present study we sought to identify the site of threonine phosphorylation in FcepsilonRIgamma and investigate its functional importance. We found that threonine 60 was phosphorylated in vitro and in vivo. Expression of a mutated FcepsilonRIgamma (T60A), in either FcepsilonRIgamma-deficient or gamma-null mast cells, resulted in a delay of FcepsilonRI endocytosis, inhibition of TNF-alpha mRNA production, and inhibition of degranulation but did not affect FcepsilonRI-induced cell adhesion. Tyrosine phosphorylation of the T60A mutant gamma chain was normal, but Syk phosphorylation was dramatically reduced in these transfectants. This correlated with reduced co-immunoprecipitation of FcepsilonRIgamma with Syk. Substitution of an aspartic residue for threonine 60 of the FcepsilonRIgamma reconstituted complete activation of Syk and co-immunoprecipitation of FcepsilonRIgamma with Syk. We conclude that the negative charge provided by phosphorylation of threonine 60 of the FcepsilonRIgamma is required for the appropriate interaction and activation of Syk. This is a likely requirement for immunoreceptor tyrosine-based activation motifs involved in Syk activation.
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Affiliation(s)
- P G Swann
- Section on Chemical Immunology, National Institute of Arthritis, Musculoskeletal and Skin Diseases, Maryland 20892, USA
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Chiarini-Garcia H, Pereira FM. A comparative study of lymph node mast cell populations in five marsupial species. Tissue Cell 1999; 31:318-26. [PMID: 10481303 DOI: 10.1054/tice.1999.0049] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In order to determine whether different subpopulations of mast cells exist, mast cells of mandibular and axillary lymph nodes from five species (Didelphis aurita, Metachirus nudicaudatus, Philander opossum, Marmosops incanus and Gracilinanus agilis) of South American marsupials were studied. Our results showed that mast cells present in the connective tissue of the capsule and septa (CTMC) were similar to those described for eutherian mammals. However, a population of mast cells that was present in the lymphatic sinuses and bathed by the lymph, plus in direct contact with granulocytes, lymphocytes, macrophages, and reticular cells, were morphologically and histochemically different from the CTMC. In the five species studied, these cellular types, called lymphatic-sinus mast cells (LSMC), had a lower concentration of intragranular heparin and, in four of the five species, the cytoplasmic granules appeared to be larger than those in CTMC. Although LSMC have been rarely described in eutherian mammals, it was verified, in this study, that LSMC are nevertheless present in lymphatic sinuses of the five metatherian species studied. These observations suggest that the presence of LSMC may be a characteristic of the marsupials and important in the immune response and adaptive success of the Didelphidae.
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Affiliation(s)
- H Chiarini-Garcia
- Departamento de Morfologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
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Yoshikawa H, Nakajima Y, Tasaka K. Glucocorticoid Suppresses Autocrine Survival of Mast Cells by Inhibiting IL-4 Production and ICAM-1 Expression. THE JOURNAL OF IMMUNOLOGY 1999. [DOI: 10.4049/jimmunol.162.10.6162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
When mast cells are activated through their high affinity IgE receptors (FcεRI), release of chemical mediators is followed by secretion of multiple cytokines. In this work, we report that IL-3-dependent mast cell line MC9 undergoes apoptosis when IL-3 is withdrawn. However, cross-linking of FcεRI prevents apoptosis of MC9 by an autocrine mechanism, producing IL-3, IL-4, and GM-CSF. Although stimulated MC9 synthesizes mRNAs and proteins of these cytokines, secretion of endogenous IL-3 and GM-CSF is not enough for cell survival, whereas IL-4 itself does not have survival effect on MC9, but it induces cell aggregation by expressing LFA-1 and makes it reactive to endogenous growth factors. Addition of dexamethazone (DXM) to MC9 results in significant down-regulation of IL-4 mRNA in activated MC9. However, mRNA levels of IL-3 and GM-CSF are not changed by DXM. DXM also directly down-regulates the expression of ICAM-1 that is the high affinity ligand of LFA-1, by which the self-aggregation of MC9 is inhibited. Thus, glucocorticoids suppress autocrine survival of mast cells by inhibiting IL-4 production and ICAM-1 expression.
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Affiliation(s)
- Hideshi Yoshikawa
- Department of Parasitology and Immunology, Yamanashi Medical University, Tamaho-cho, Yamanashi, Japan
| | - Yasuo Nakajima
- Department of Parasitology and Immunology, Yamanashi Medical University, Tamaho-cho, Yamanashi, Japan
| | - Kachio Tasaka
- Department of Parasitology and Immunology, Yamanashi Medical University, Tamaho-cho, Yamanashi, Japan
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Knippels LM, Penninks AH, Smit JJ, Houben GF. Immune-mediated effects upon oral challenge of ovalbumin-sensitized Brown Norway rats: further characterization of a rat food allergy model. Toxicol Appl Pharmacol 1999; 156:161-9. [PMID: 10222308 DOI: 10.1006/taap.1999.8641] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Although several in vivo antigenicity assays using parenteral immunization are operational, no full validated enteral models are available to study food allergy and allergenicity of food proteins. To further validate a developed enteral Brown Norway (BN) rat food allergy model, systemic and local immune-mediated reactions were studied upon oral challenges. The animals were exposed to ovalbumin (OVA) by daily gavage dosing (1 mg OVA/rat/day) for 6 weeks, without the use of an adjuvant, or by intraperitoneal injections with OVA together with AL(OH)3. Subsequently, effects on breathing frequency, blood pressure, and gastrointestinal permeability were investigated upon an oral challenge with 10 to 100 mg OVA in vivo. In both parenterally and orally sensitized rats, an increase in gut permeability (increased passage of beta-lactoglobulin as bystander protein) was determined between 0.5 and 1 h after an oral OVA challenge was given. An oral challenge with OVA did not induce a clear effect on the respiratory system or blood pressure in the majority of the animals. However, some animals demonstrated a temporary decrease in breathing frequency or systolic blood pressure. Upon oral challenge with OVA of orally and parenterally sensitized animals, local effects were observed in all animals whereas systemic effects were observed at a low frequency, which reflects the situation in food allergic patients after an oral challenge. These studies show that the BN rat provides a suitable animal model to study oral sensitization to food proteins as well as immune-mediated effects after oral challenge with food proteins.
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Affiliation(s)
- L M Knippels
- TNO Nutrition and Food Research Institute, Zeist, The Netherlands
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35
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Delgado L, Cuesta C, Winck JC, Sapage JM, Moura e Sá J, Fleming Torrinha JA. [Suberosis: involvement of bronchoalveolar +mastocytes in the genesis of interstitial involvement]. Arch Bronconeumol 1999; 35:71-8. [PMID: 10099726 DOI: 10.1016/s0300-2896(15)30302-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
UNLABELLED Suberosis--the lung disease suffered by cork industry workers--may present in the form of either hypersensitivity pneumonitis (HP) or obstructive pulmonary disease (OPD) with asthma-like symptoms or chronic bronchitis. Mast cells play an important role in pulmonary inflammation and are particularly implicated in the rapid release of mediators in bronchoconstriction and the production of cytokines and mediators of fibroblast activity. Increased numbers of mast cells are present in bronchoalveolar lavage (BAL) fluid in interstitial lung diseases, suggesting that these cells also participate in chronic inflammatory processes and in pulmonary fibrosis. OBJECTIVES To assess the participation of mas cells in interstitial pulmonary inflammation in cork industry workers by histochemically analyzing their presence in BAL fluid. Foreseeing the possible implication of bronchoalveolar mast cells in the pathogenesis of suberosis, we also studied their relation to various signs and symptoms of the disease, to respiratory function parameters and to degree of alveolitis. PATIENTS AND METHODS Thirty-one cork industry workers with respiratory symptoms related to occupational exposure were enrolled. Occupational and case histories were taken. Physical examinations were complemented by chest X-rays, plethysmography/spirometry, fiberoptic bronchoscopy with BAL, and determination of carbon monoxide diffusing capacity (DLCO) and arterial blood gases at rest. Patient classification (20 with HP and 11 with OPD) was based on clinical and functional criteria and analysis of BAL fluid. Mast cells in cytospinned samples treated with two different stains [May-Grunwald-Giemsa (MGG) and Toluidine Blue (Tol.Bl.)] were counted by two observers and the results were compared. MAIN RESULTS Good correlation between the two staining methods was confirmed (rs = 0.86, p < 0.0001). Correlation between the two observers was also good (MGG rs = 0.86, Yol.Bl. rs = 0.87, p < 0.0001). The number of mast cells in BAL fluid was significantly higher in patients with HP [13.4 +/- 4.5 (x +/- SEM)] than in those with OPD (0.9 +/- 0.3; p < 0.002, Mann Whitney test). The subgroup of eight patients with poorer respiratory function (CV and/or DLCO < 80% of reference value) also had higher mast cell counts in BAL (19.9 +/- 7.7 versus 3.5 +/- 1.7; p = 0.002). We also saw a negative relation between mast cell counts in BAL fluid and lung function parameters: total lung capacity (rs = -0.68, p = 0.005) and DLCO (rs = -0.54, p = 0.008). Mast cell recovery from BAL fluid was positively related to severity of alveolitis in terms of total cell counts (rs = 0.62, p = 0.002), absolute lymphocyte counts (rs = 0.56, p = 0.006) and albumin levels (rs = 0.68, p = 0.003). CONCLUSIONS Our findings suggest that mast cells participate in interstitial lung cell response to the inhalation of organic cork dust, particularly when HP is the form of presentation. Moreover, mas cell recruitment on the alveolar surface seems to be related to the intersity of lymphocytosis and interstitial pulmonary inflammation and to lung function deterioration in affected patients.
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Affiliation(s)
- L Delgado
- Servicio de Inmunología, Facultad de Medicina, Hospital de Sao João, Oporto.
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VORONOV E, APTE RN, SOFER S. THE SYSTEMIC INFLAMMATORY RESPONSE SYNDROME RELATED TO THE RELEASE OF CYTOKINES FOLLOWING SEVERE ENVENOMATION. ACTA ACUST UNITED AC 1999. [DOI: 10.1590/s0104-79301999000100002] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | | | - S. SOFER
- Ben-Gurion University of theBen-Gurion University of theBen-Gurion University of the, Israel
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37
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Hojo M, Maghni K, Issekutz TB, Martin JG. Involvement of alpha-4 integrins in allergic airway responses and mast cell degranulation in vivo. Am J Respir Crit Care Med 1998; 158:1127-33. [PMID: 9769271 DOI: 10.1164/ajrccm.158.4.9804001] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Antibodies against integrins have been shown to inhibit allergic airway responses. The purpose of this study was to test the hypothesis that the beta1 integrin, very late antigen-4 (VLA-4), is involved in mast cell activation triggered by allergen exposure in sensitized animals. To do this we studied Brown Norway rats that were sensitized to ovalbumin (OA; 1 mg subcutaneously) using Bordetella pertussis as an adjuvant. Two weeks later rats were challenged with OA, pulmonary resistance (RL) was determined, and the concentrations of histamine and tryptase in bronchoalveolar lavage fluid and N-acetyl-leukotriene (LT)E4 in bile were measured. Pretreatment with a monoclonal antibody against VLA-4 (TA-2) attenuated the early response after OA challenge (342.9 +/- 24.4% baseline RL versus 153.3 +/- 19.4%; p < 0.01). There were significantly lower concentrations of histamine (67.11 +/- 11.90 microgram/ml versus 26.69 +/- 1.84; p < 0.01) and tryptase (0.143 +/- 0. 035 microgram/ml versus 0.053 +/- 0.022 microgram/ml; p < 0.01) in TA-2-treated animals. The increases in the concentrations of biliary N-acetyl-LTE4 after OA challenge were also significantly lower in TA-2-treated animals. These data suggest that a selective anti-VLA-4 monoclonal antibody prevents early responses through inhibition of mast cell activation.
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Affiliation(s)
- M Hojo
- Meakins-Christie Laboratories, McGill University, Montreal, Quebec; and the Izaak Walton Killam Children's Hospital, Grace Centre, Dalhousie University, Halifax, Nova Scotia, Canada
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38
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Impaired Expression of Integrin -4 Subunit in Cultured Mast Cells Derived From Mutant Mice of mi/mi Genotype. Blood 1998. [DOI: 10.1182/blood.v92.6.1973] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractThe mi locus encodes a member of the basic-helix-loop-helix-leucine zipper protein family of transcription factors (hereafter called MITF). We have reported that expression of several genes was impaired in cultured mast cells (CMCs) ofmi/mi mice due to a defective transactivation ability of mutant MITF (mi-MITF). Because attachment of mi/mi CMCs to fibroblasts is impaired, we examined the expression of integrin genes in mi/mi CMCs in the present study. Among the integrin genes examined, the expression of integrin 4 subunit was barely detectable in mi/mi CMCs, and the 4 protein was not detected by flow cytometry either. The specific adhesion to vascular cell adhesion molecule-1 (VCAM-1), the ligand for 4 subunit, was observed in +/+ CMCs but not in mi/mi CMCs, indicating that the expression of integrin 4 subunit at a functional level did not occur in mi/mi CMCs. In the promoter region of the 4 subunit gene, there was a CACTTG motif to which normal MITF (+- MITF) bound. The coexpression of +-MITF but not of mi-MITF transactivated the promoter of the 4 subunit gene. The deletion or mutation of the CACTTG motif abolished the transactivation by +-MITF, suggesting that +-MITF directly transactivated the gene encoding 4 subunit of integrin.© 1998 by The American Society of Hematology.
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Abstract
The mi locus encodes a member of the basic-helix-loop-helix-leucine zipper protein family of transcription factors (hereafter called MITF). We have reported that expression of several genes was impaired in cultured mast cells (CMCs) ofmi/mi mice due to a defective transactivation ability of mutant MITF (mi-MITF). Because attachment of mi/mi CMCs to fibroblasts is impaired, we examined the expression of integrin genes in mi/mi CMCs in the present study. Among the integrin genes examined, the expression of integrin 4 subunit was barely detectable in mi/mi CMCs, and the 4 protein was not detected by flow cytometry either. The specific adhesion to vascular cell adhesion molecule-1 (VCAM-1), the ligand for 4 subunit, was observed in +/+ CMCs but not in mi/mi CMCs, indicating that the expression of integrin 4 subunit at a functional level did not occur in mi/mi CMCs. In the promoter region of the 4 subunit gene, there was a CACTTG motif to which normal MITF (+- MITF) bound. The coexpression of +-MITF but not of mi-MITF transactivated the promoter of the 4 subunit gene. The deletion or mutation of the CACTTG motif abolished the transactivation by +-MITF, suggesting that +-MITF directly transactivated the gene encoding 4 subunit of integrin.© 1998 by The American Society of Hematology.
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40
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Moon TC, Murakami M, Ashraf MD, Kudo I, Chang HW. Regulation of cyclooxygenase-2 and endogenous cytokine expression by bacterial lipopolysaccharide that acts in synergy with c-kit ligand and Fc epsilon receptor I crosslinking in cultured mast cells. Cell Immunol 1998; 185:146-52. [PMID: 9636692 DOI: 10.1006/cimm.1998.1284] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Emerging evidence has suggested the pivotal role of mast cells in a host defense against bacterial infection. In this paper, we report that bacterial lipopolysaccharide (LPS) is a potent enhancer of the cytokine- and IgE-dependent delayed responses of IL-3-dependent mouse bone marrow-derived cultured mast cells (BMMC). LPS, although showing minimal effects, significantly augmented the c-kit ligand (KL)- or IgE-dependent expression of cyclooxygenase (COX)-2 and the attendant delayed PGD2 generation, with IL-10 and IL-4 acting as potentiating and inhibitory cytokines, respectively. The COX-2-inducing activity of LPS was mimicked by exogenous IL-1 beta. Assessment of endogenous cytokine induction revealed that IL-1 beta expression was stimulated by either LPS or exogenous IL-1 beta. IL-6 expression occurred in parallel with COX-2 expression. IL-10 expression, which lagged behind COX-2 expression, depended on exogenous IL-10, but not on LPS and IL-1 beta. Thus, LPS and IL-1 beta exhibited similar biological activities in terms of COX-2 and endogenous cytokine expression. However, adding an antibody against the type I IL-1 receptor to BMMC, which abrogated the effects of IL-1 beta, failed to neutralize the effects of LPS. These results suggest that LPS activates BMMC through the signal transduction pathway shared with exogenous IL-1 beta, rather than exerting its action indirectly via the production of endogenous IL-1 beta.
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Affiliation(s)
- T C Moon
- College of Pharmacy, Yeungnam University, Gyonsan, Korea
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41
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Inamura N, Mekori YA, Bhattacharyya SP, Bianchine PJ, Metcalfe DD. Induction and Enhancement of FcεRI-Dependent Mast Cell Degranulation Following Coculture with Activated T Cells: Dependency on ICAM-1- and Leukocyte Function-Associated Antigen (LFA)-1-Mediated Heterotypic Aggregation. THE JOURNAL OF IMMUNOLOGY 1998. [DOI: 10.4049/jimmunol.160.8.4026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Activated mast cells are known to reside in close apposition to T cells in various inflammatory processes. In this regard, we have reported that activated mast cells form heterotypic aggregates with activated lymphocytes. To determine whether this interaction would result in mast cell degranulation, we examined the effect of EL-4, 2B4, or freshly isolated T cells, activated by PMA or immobilized anti-CD3 mAb, on histamine release from murine bone marrow-derived cultured mast cells (BMCMC). Coculturing BMCMC with activated but not with resting T cells resulted in significant histamine release. Also, FcεRI cross-linking-induced degranulation was augmented when BMCMC were cocultured with activated T cells. Supernatants of activated T cells failed to exert the stimulatory effect. Separation of the two cell populations with a porous membrane prevented degranulation, indicating that BMCMC activation was adhesion dependent. Indeed, the kinetics of histamine release paralleled the kinetics of the formation of heterotypic aggregates, which peaked after 12 h of coculture. Introduction of anti-LFA-1 and anti-intercellular adhesion molecule-1 mAb inhibited the adhesion-induced mast cell degranulation. These data suggest a heretofore unrecognized mast cell activation pathway induced by LFA-1/intercellular adhesion molecule-1-mediated heterotypic aggregation with activated T cells.
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Affiliation(s)
- Noriaki Inamura
- *Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
- †Fujisawa Pharmaceutical Co., Ibaraki, Japan; and
| | - Yoseph A. Mekori
- ‡Department of Medicine, Meir General Hospital, Kfar-Saba, and the Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Siba P. Bhattacharyya
- *Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Peter J. Bianchine
- *Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
| | - Dean D. Metcalfe
- *Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892
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42
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Pankhurst GJ, Bennett CA, Easterbrook-Smith SB. Characterization of the heparin-binding properties of human clusterin. Biochemistry 1998; 37:4823-30. [PMID: 9537999 DOI: 10.1021/bi972367v] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Clusterin is a highly conserved mammalian glycoprotein which has been predicted to contain heparin-binding sites. We tested this prediction by studying the interactions between heparin and clusterin using ELISA and heparin affinity chromatography methodologies. Two forms of biotinylated heparin were used in ELISA: heparin which had been directly biotinylated with a biotin-N-hydroxysuccinimide ester and heparin which had been activated using epichlorohydrin and 1,6-diaminohexane prior to biotinylation. Both gave dose-dependent increases in ELISA signal with increasing concentrations of biotinylated heparin, with the latter giving signals an order of magnitude greater than the former. There was a dose-dependent increase in the ELISA signal from bound biotinylated heparin with increasing concentrations of plate-bound clusterin. The apparent affinity constant for binding of biotinylated heparin to plate-bound clusterin at pH 6.0 was estimated as 0.06 +/- 0.02 microM. Unlabeled heparin blocked the binding of biotinylated heparin to clusterin over a concentration range similar to that of the binding of biotinylated heparin to plate-bound clusterin. The binding of biotinylated heparin to clusterin was independent of the presence or absence of Ca2+. The binding of biotinylated heparin to plate-bound clusterin increased with decreasing pH over the range 5.5-8.0 and was characterized by an apparent pKa of 6.9. Clusterin in human serum bound to heparin-Sepharose at pH 6.0 but not at pH 7.4. Dot-blot experiments showed that one of the polypeptide chains of clusterin which had been reduced and alkylated under denaturing conditions bound to heparin-Sepharose. This chain was identified as the alpha chain from its N-terminal amino acid sequence.
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Affiliation(s)
- G J Pankhurst
- Department of Biochemistry University of Sydney, Sydney NSW 2006, Australia
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43
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Babina M, Weber S, Mammeri K, Henz BM. Signal transduction via CD43 (leukosialin, sialophorin) and associated biological effects in human mast cell line (HMC-1). Biochem Biophys Res Commun 1998; 243:163-9. [PMID: 9473499 DOI: 10.1006/bbrc.1998.8083] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
CD43 has been shown to be involved in the regulation of cellular adhesion and activation of leukocytes, but its functional significance for mast cell biology has been poorly defined. We demonstrate here that mAb engagement of surface CD43 on human leukemic (HMC-1) mast cells initiates a signaling cascade which involves protein kinase C, while tyrosine kinases appear to play a minor role, as evidenced by effects of different kinase inhibitors on homotypic aggregation induced via CD43. Furthermore, administration of an activating anti-CD43 mAb is shown to induce and promote TNF-alpha- and to enhance IL-8-secretion from HMC-1 cells, but it does not initiate histamine, tryptase, or LTC4 release, suggesting that the intracellular pathways leading to aggregation and release of certain mast cell mediators are differentially regulated. Additionally, engagement of CD43 on HMC-1 cells leads to down-regulation of CD43 surface expression, implying that CD43 may be potentially involved in its own regulation.
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Affiliation(s)
- M Babina
- Department of Dermatology, Virchow-Klinikum, Humboldt-Universität zu Berlin, Germany
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44
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Abstract
BACKGROUND The mediators released during the allergic inflammatory reaction induce the clinical symptoms of the allergic disease and although there have been numerous studies investigating mediator release in allergen challenge models of allergic rhinitis very few have extended this approach to the study of natural disease. OBJECTIVE The aim of this investigation was therefore to measure mast cell and eosinophil mediator levels and indices of vascular permeability in naturally occurring rhinitis. METHODS Three groups of subjects were studied, normal non-rhinitics, seasonal allergic rhinitics in and out of the grass pollen season and perennial allergic rhinitics. Mediators were recovered using the technique of nasal lavage and the levels of tryptase, histamine, eosinophil cationic protein and albumin were determined. In addition, eosinophils were enumerated in nasal smears as an indices of underlying inflammation. RESULTS The levels of tryptase, eosinophil cationic protein and albumin were significantly higher in the lavage recovered from the symptomatic seasonal allergic rhinitics than when asymptomatic (P = 0.05, P = 0.003, P = 0.009, respectively). These levels of eosinophil cationic protein and albumin were also significantly higher than those of the normal non-rhinitics (P = 0.0008, P = 0.0.003, respectively). In the perennial allergic rhinitics the levels of tryptase, eosinophil cationic protein and albumin were higher than the normal non-rhinitics (P < 0.0001, P = 0.0003, P = 0.0001, respectively). The levels of tryptase and histamine were higher in the perennial allergic rhinitics than the seasonal allergic rhinitics (P = 0.0003, P = 0.006, respectively). These changes in mediator levels were accompanied by a significant influx of eosinophils into the nasal mucosa of both the symptomatic seasonal rhinitics, compared with asymptomatic (P = 0.04) and normal controls (P = 0.0006) and the perennial rhinitics compared to normal controls (P = 0.03). CONCLUSION These results indicate that in both naturally occurring seasonal allergic rhinitis and perennial allergic rhinitis mast cell and eosinophil activation occurs and this is accompanied by an increase in vascular permeability. These measurements in lavage fluid provide a method of monitoring the mucosal cellular events in response to therapy.
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Affiliation(s)
- S J Wilson
- University Medicine, University of Southampton, UK
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45
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Okazaki H, Zhang J, Hamawy MM, Siraganian RP. Activation of protein-tyrosine kinase Pyk2 is downstream of Syk in FcepsilonRI signaling. J Biol Chem 1997; 272:32443-7. [PMID: 9405454 DOI: 10.1074/jbc.272.51.32443] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Aggregation of the FcepsilonRI, a member of the immune receptor family, induces the activation of proteintyrosine kinases and results in tyrosine phosphorylation of proteins that are involved in downstream signaling pathways. Here we report that Pyk2, another member of the focal adhesion kinase family, was present in the RBL-2H3 mast cell line and was rapidly tyrosine-phosphorylated and activated after FcepsilonRI aggregation. Tyrosine phosphorylation of Pyk2 was also induced by the calcium ionophore A23187, by phorbol myristate acetate, or by stimulation of G-protein-coupled receptors. Adherence of cells to fibronectin dramatically enhanced the induced tyrosine phosphorylation of Pyk2. Although Src family kinases are activated by FcepsilonRI stimulation and tyrosine-phosphorylate the receptor subunits, the activation and tyrosine phosphorylation of Pyk2 were downstream of Syk. In contrast, tyrosine phosphorylation of Pyk2 by stimulation of G-protein-coupled receptors was independent of Syk. Therefore, the FcepsilonRI-induced tyrosine phosphorylation of Pyk2 is downstream of Syk and may play a role in cell secretion.
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Affiliation(s)
- H Okazaki
- Receptors and Signal Transduction Section, Oral Infection and Immunity Branch, NIDR, National Institutes of Health, Bethesda, Maryland 20892-1188, USA.
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46
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Sagawa K, Kimura T, Swieter M, Siraganian RP. The protein-tyrosine phosphatase SHP-2 associates with tyrosine-phosphorylated adhesion molecule PECAM-1 (CD31). J Biol Chem 1997; 272:31086-91. [PMID: 9388260 DOI: 10.1074/jbc.272.49.31086] [Citation(s) in RCA: 92] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Aggregation of many cell-surface receptors results in tyrosine phosphorylation of numerous proteins. We previously observed the tyrosine phosphorylation of the platelet/endothelial cell adhesion molecule, PECAM-1 (CD31), after FcepsilonRI stimulation in rat basophilic leukemia RBL-2H3 cells. Here we found that PECAM-1 was also transiently tyrosine-phosphoryated after adherence of these cells to fibronectin. Similarly aggregation of the T cell receptor on Jurkat cells also induced this tyrosine phosphorylation. The protein-tyrosine phosphatase SHP-2 is a widely expressed cytosolic enzyme with two Src homology 2 (SH2) domains. SHP-2, but not the related protein-tyrosine phosphatase SHP-1, associated with PECAM-1. This association of the two proteins correlated with the extent of the tyrosine phosphorylation of PECAM-1. A fusion protein containing the two SH2 domains of SHP-2 precipitated PECAM-1 from cell lysates and also directly bound to phosphorylated PECAM-1. In immune precipitate phosphatase assays, there was tyrosine dephosphorylation of PECAM-1. Therefore, integrin and immune receptor activation results in tyrosine phosphorylation of PECAM-1 and the binding of the protein-tyrosine phosphatase SHP-2, which could regulate receptor-mediated signaling in cells.
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Affiliation(s)
- K Sagawa
- Receptors and Signal Transduction Section, OIIB, NIDR, National Institutes of Health, Bethesda, Maryland 20892, USA
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47
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Sagawa K, Swaim W, Zhang J, Unsworth E, Siraganian RP. Aggregation of the high affinity IgE receptor results in the tyrosine phosphorylation of the surface adhesion protein PECAM-1 (CD31). J Biol Chem 1997; 272:13412-8. [PMID: 9148965 DOI: 10.1074/jbc.272.20.13412] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
One of the earliest events after aggregation of the high affinity receptor for IgE (FcepsilonRI) on mast cells is the activation of protein tyrosine kinases resulting in tyrosine phosphorylation of numerous proteins. Using a monoclonal antibody raised against the rat basophilic leukemia RBL-2H3 cells, we identified that platelet/endothelial cell adhesion molecule 1 (PECAM-1 or CD31) was tyrosine phosphorylated in these cells. Aggregation of PECAM-1 did not induce a detectable increase in its tyrosine phosphorylation, nor did it result in degranulation. However, the minimal tyrosine phosphorylation of PECAM-1 in nonstimulated cells was dramatically increased after FcepsilonRI aggregation. This receptor-induced tyrosine phosphorylation of PECAM-1 was an early event, independent of Ca2+ influx or of the activation of protein kinase C and of cell adhesion. PECAM-1 is an adhesion molecule that is required for the transmigration of leukocytes across the endothelium into sites of inflammation. Therefore tyrosine phosphorylation of PECAM-1 may modulate its interaction with other molecules, thereby regulating the migration of basophils into inflammatory sites.
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Affiliation(s)
- K Sagawa
- Laboratory of Immunology, NIDR, National Institutes of Health, Bethesda, Maryland 20892, USA
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48
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Interleukin-4 Induces Homotypic Aggregation of Human Mast Cells by Promoting LFA-1/ICAM-1 Adhesion Molecules. Blood 1997. [DOI: 10.1182/blood.v89.9.3296] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
We report here that interleukin-4 (IL-4) induces homotypic aggregation of cultured human mast cells, grown from cord blood mononuclear cells in the presence of stem cell factor and IL-6. This aggregation was specifically induced by IL-4, because other cytokines including IL-1α, IL-1β, IL-2, IL-3, IL-5, IL-9, IL-10, interferon-γ, IL-12, granulocyte-macrophage colony-stimulating factor, NGF-β, and tumor necrosis factor-α failed to show such effect. Flow cytometric analysis of the cultured mast cells showed that IL-4 increases the expression of lymphocyte function-associated antigen-1 (LFA-1) and intercellular adhesion molecule-1 (ICAM-1), but not of very late antigen (VLA) family adhesion molecules or vascular cell adhesion molecule-1 (VCAM-1). Neutralizing monoclonal antibodies specific for LFA-1α, LFA-1β, or ICAM-1 inhibited the IL-4–induced homotypic aggregation of the mast cells, indicating that the aggregation was mediated mainly by LFA-1/ICAM-1 interaction. In addition, IL-4–treated but not untreated mast cells bound to immobilized ICAM-1. This binding was also inhibited by anti-LFA-1 or anti-ICAM-1. These results show that IL-4 promotes expression of ICAM-1 and LFA-1 molecules on mast cells, and suggest that IL-4 may contribute to the migration of mast cells into the inflamed tissue and to the cellular interaction with other inflammatory cells by upregulating adhesion molecules.
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Krishnaswamy G, Lakshman T, Miller AR, Srikanth S, Hall K, Huang SK, Suttles J, Smith JK, Stout R. Multifunctional cytokine expression by human mast cells: regulation by T cell membrane contact and glucocorticoids. J Interferon Cytokine Res 1997; 17:167-76. [PMID: 9085942 DOI: 10.1089/jir.1997.17.167] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Human mast cells readily release a variety of mediators, including cytokines, in response to IgE receptor crosslinking, but the mechanisms governing the expression of cytokines are still unclear. Using a human mast cell line, HMC-1, we show expression of cytokine transcripts as early as 2 h after activation with ionomycin and phorbol myristate acetate (PMA). Resting HMC-1 cells expressed transcripts for interleukin-1 receptor antagonist (IL-1RA), IL-2, IL-4, IL-5, GM-CSF, and weakly for IL-8, and stimulation with ionomycin and PMA induced additional transcripts for IL-6 and IL-13 and upregulated expression of IL-8 transcripts. HMC-1 cells secreted IL-4, IL-8, and GM-CSF protein after activation and dexamethasone significantly inhibited the production of these cytokines. Of significance is the finding that the addition of membranes purified from activated T cells to mast cell cultures induced transcripts selectively for IL-8 and none for other proinflammatory cytokines. Flow cytometry revealed that resting HMC-1 cells express CD40, a molecule involved in contact-dependent signaling of monocytes and B cells by T cells. However, activation of HMC-1 by anti-CD40 antibody did not induce IL-8 gene expression or protein production. This study demonstrates that human mast cells are capable of expressing multiple cytokines that can be inhibited by glucocorticoids. It also raises the possibility that T cells may activate mast cell cytokine synthesis by novel contact-dependent mechanisms. This phenomenon of T cell regulation of mast cell function requires further study.
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Affiliation(s)
- G Krishnaswamy
- Department of Medicine, East Tennessee State University, Johnson City 37614-0622, USA
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FcεRI-induced Cytokine Production and Gene Expression. IGE RECEPTOR (FCΕRI) FUNCTION IN MAST CELLS AND BASOPHILS 1997. [DOI: 10.1007/978-3-662-22022-1_11] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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