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Reciprocal regulation of cultured human mast cell cytokine production by IL-4 and IFN-gamma.
Tachimoto, H; Ebisawa, M; Hasegawa, T; Kashiwabara, T; Ra, C; Bochner, B S; Miura, K; Saito, H.
Afiliação
  • Tachimoto H; Department of Allergy, National Children's Medical Research Center, Tokyo, Japan.
J Allergy Clin Immunol ; 106(1 Pt 1): 141-9, 2000 Jul.
Article em En | MEDLINE | ID: mdl-10887317
BACKGROUND: T(H)1 and T(H)2 cytokines are thought to regulate allergic inflammation. OBJECTIVE: Two key regulatory cytokines, IL-4 and IFN-gamma, were examined for their effects on cytokine production by cultured human mast cells (CHMCs). METHODS: CHMCs were obtained by culturing cord blood-derived CD34(+) cells in the presence of stem cell factor and IL-6 for 14 to 16 weeks. CHMCs were passively sensitized with human myeloma IgE and supplemented with or without IL-4 or IFN-gamma. After the sensitization, CHMCs were stimulated with anti-FcepsilonRIalpha mAb. Concentrations of secreted cytokines were measured by using ELISA, and cytokine messenger RNA was analyzed by using quantitative competitive RT-PCR. RESULTS: IL-4 profoundly enhanced FcepsilonRI-mediated production of macrophage inflammatory protein (MIP) 1alpha, IL-8, and GM-CSF. For example, the enhancement by IL-4 (10 ng/mL) of the production of MIP-1alpha, IL-8, and GM-CSF was 25-, 7-, and 90-fold, respectively, after 6 hours. IL-4 also enhanced levels of FcepsilonRI-induced cytokine messenger RNA but to a lesser degree. In contrast, IFN-gamma inhibited FcepsilonRI-induced production of MIP-1alpha, IL-8, and GM-CSF. For example, the inhibition by IFN-gamma (10 ng/mL) of FcepsilonRI-mediated production of MIP-1alpha, IL-8, and GM-CSF was 80%, 75%, and 95%, respectively. IFN-gamma also suppressed FcepsilonRI-induced messenger RNA expression of these cytokines. Neither IL-4 nor IFN-gamma affected the kinetics of cytokine production by CHMCs. CONCLUSION: These data suggest that IL-4 and IFN-gamma may influence allergic reactions by modulating human mast cell cytokine production.
Assuntos
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Citocinas / Interleucina-4 / Interferon gama / Mastócitos Limite: Humans Idioma: En Revista: J Allergy Clin Immunol Ano de publicação: 2000 Tipo de documento: Article
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Citocinas / Interleucina-4 / Interferon gama / Mastócitos Limite: Humans Idioma: En Revista: J Allergy Clin Immunol Ano de publicação: 2000 Tipo de documento: Article