Inhibition of IgE‐induced activation of human mast cells by IL‐10
- 1 May 2001
- journal article
- research article
- Published by Wiley in Clinical and Experimental Allergy
- Vol. 31 (5), 694-704
- https://doi.org/10.1046/j.1365-2222.2001.01069.x
Abstract
Background IL‐10 exhibits anti‐inflammatory effects on activated rodent mast cells (MC) in vitro and inhibits allergen‐induced airway inflammation in vivo in murine models. The effects of IL‐10 on the allergic activation of human MC are presently unknown. Objective In light of the well‐known heterogeneity of mast cell reactivity between animal species, one cannot readily predict the response of human MC to IL‐10. Moreover, the impact of IL‐10 on MC‐derived proinflammatory mediators is still unknown. Thus, the objective of this study was to investigate the effects of IL‐10 on the release of inflammatory mediators by IgE/anti‐IgE‐challenged human cord blood‐derived mast cells (CBMC), used as an in vitro model of MC phenotypically similar to human lung MC. Materials and methods Highly purified human MC were obtained by a first step of long‐term culture of cord blood mononuclear cells in the presence of human recombinant stem cell factor (rhSCF) and of human recombinant IL‐6 (rhIL‐6), followed by a second step of purification by depletion of contaminating cells with an immunomagnetic method. The cells were treated with human IgE, then challenged with anti‐human IgE, in the presence or the absence of recombinant rhIL‐10 used at various concentrations. Histamine, tumour necrosis factor‐alpha (TNF‐α), IL‐5 and IL‐8 were measured in the various supernatants collected at different times after the beginning of the challenge. Results IL‐10 inhibited the release of TNF‐α and of IL‐8, but not of IL‐5, by activated CBMC. Interestingly, IL‐10 also inhibited the release of histamine by activated CBMC, contrasting with data reported for rodent MC. Conclusions These findings suggest that IL‐10 might have anti‐inflammatory effects on IgE/anti‐IgE‐challenged human MC by inhibiting their release of TNF‐α, IL‐8 and histamine. These data provide new insights into the control of human mast cell activation and might lead to a better knowledge of the cellular mechanisms controlling allergic reactions.Keywords
This publication has 54 references indexed in Scilit:
- Endogenous interleukin‐10 suppresses allergen‐induced airway inflammation and nonspecific airway responsivenessClinical and Experimental Allergy, 2000
- Role of IL–5 in the Development of Allergen–Induced Airway HyperresponsivenessInternational Archives of Allergy and Immunology, 1999
- Mast cells and basophils in innate immunitySeminars in Immunology, 1998
- Late response to allergen is associated with increased concentrations of tumor necrosis factor-α and IL-5 in induced sputumJournal of Allergy and Clinical Immunology, 1997
- Regulation of Human Alveolar Macrophage Inflammatory Cytokine Production by Interleukin-10Clinical Immunology and Immunopathology, 1996
- Interleukin-10 regulation in normal subjects and patients with asthmaJournal of Allergy and Clinical Immunology, 1996
- Interleukin‐10 inhibits cytokine generation from mast cellsEuropean Journal of Immunology, 1996
- Regulation of expression of the IL-2 and IL-5 genes and the role of proteins related to nuclear factor of activated T cellsJournal of Allergy and Clinical Immunology, 1995
- Interleukin-8 Induces Its Own Production in CD4+ T Lymphocytes: A Process Regulated by Interleukin 10Biochemical and Biophysical Research Communications, 1995
- Release of both preformed and newly synthesized tumor necrosis factor alpha (TNF-alpha)/cachectin by mouse mast cells stimulated via the Fc epsilon RI. A mechanism for the sustained action of mast cell-derived TNF-alpha during IgE-dependent biological responses.The Journal of Experimental Medicine, 1991