Abstract:
UNLABELLED:T-bet is crucially implicated in Th1 differentiation due to its strong promoting activity for IFN-gamma gene transcription. However, the regulatory role of T-bet in Th2 cytokines is not fully delineated. METHODS:The effect of T-bet on mRNA expression as well as the promoter activity of IL-4 in human T cells was investigated by employing quantitative RT-PCR and fluorescence-based promoter reporter assay procedures. RESULTS:IL-4 mRNA expression as well as the transcriptional activity of 5'-flanking region in the IL-4 gene encompassing -1105 to +4 in Jurkat cells was clearly upregulated upon stimulation. The inducible mRNA expression and the promoter activity of IL-4 were significantly diminished by ectopic expression of T-bet. CONCLUSION:IL-4 gene transcription is inhibited by T-bet via the suppression of its promoter activity, independently of IFN-gamma. T-bet facilitates Th1 differentiation through not only upregulation of IFN-gamma, but also downregulation of IL-4 gene transcription.
journal_name
Int Arch Allergy Immunoljournal_title
International archives of allergy and immunologyauthors
Kitamura N,Kitamura F,Kaminuma O,Miyatake S,Tatsumi H,Nemoto S,Mori Adoi
10.1159/000101408subject
Has Abstractpub_date
2007-01-01 00:00:00pages
68-70eissn
1018-2438issn
1423-0097pii
000101408journal_volume
143 Suppl 1pub_type
杂志文章abstract::Patients with atopic dermatitis (AD) are frequently colonized with Staphylococcus aureus strains secreting exotoxins such as the staphylococcal enterotoxin B (SEB) and A (SEA). Nonetheless the role of SEB and SEA in AD is yet unknown. We analyzed the responsiveness of peripheral blood mononuclear cells (PBMCs) and iso...
journal_title:International archives of allergy and immunology
pub_type: 杂志文章
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abstract:BACKGROUND:Th2 cytokines play pivotal roles in allergic inflammation, including eosinophilia, and their actions are antagonized by Th1 cytokines, conferring them therapeutic potential. METHODS:In this study, we examined the ability of a number of cytokines to suppress the activation of eosinophils that function as eff...
journal_title:International archives of allergy and immunology
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journal_title:International archives of allergy and immunology
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
doi:10.1159/000237584
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abstract::The modulatory role of hormones in the regulation of the immune response has been well documented. Here, we present some thoughts on how sex hormones affect immunity, particularly at mucosal sites. We further discuss the possible pitfalls and difficulties associated with analysis of the data. ...
journal_title:International archives of allergy and immunology
pub_type: 杂志文章,评审
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
doi:10.1159/000170384
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journal_title:International archives of allergy and immunology
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journal_title:International archives of allergy and immunology
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
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journal_title:International archives of allergy and immunology
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journal_title:International archives of allergy and immunology
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
doi:10.1159/000084611
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章,评审
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
doi:10.1159/000103223
更新日期:2007-01-01 00:00:00
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
doi:10.1159/000237712
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
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journal_title:International archives of allergy and immunology
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
doi:10.1159/000095298
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
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journal_title:International archives of allergy and immunology
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journal_title:International archives of allergy and immunology
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更新日期:2019-01-01 00:00:00
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journal_title:International archives of allergy and immunology
pub_type: 杂志文章
doi:10.1159/000236346
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