Abstract:
:Recently, basophils have been suggested to produce inflammatory mediators in response to IgE in the absence of allergens. Monocyte chemoattractant protein-1 (MCP-1) plays an important role in the initiation of inflammatory responses by recruiting various immune cells to the site of allergic inflammation. In the present study, we examined whether IgE under allergen-free conditions could stimulate basophils and lead to the production of MCP-1. Exposure of the rat basophilic cell-line RBL-2H3 to IgE without allergen resulted in a dose- and time-dependent induction of MCP-1 expression at both the mRNA and protein level. Although allergen was not necessary for IgE-induced MCP-1 expression, it was essential for degranulation as determined by β-hexosaminidase release assay. IgE enhanced phosphorylation of MAP kinases including ERK, p38 kinase, and JNK. However, IgE-induced MCP-1 expression was attenuated by inhibitors for JNK and PKC. Concomitantly, IgE induced activation of AP-1, which is an important transcription factor for MCP-1 gene expression in RBL-2H3 cells. Taken together, our results suggest that IgE alone is sufficient to stimulate basophils to increase expression of MCP-1, which in turn might contribute to the inflammatory response.
journal_name
Mol Immunoljournal_title
Molecular immunologyauthors
Ahn KB,Jeon JH,Kang SS,Chung DK,Yun CH,Han SHdoi
10.1016/j.molimm.2014.06.008subject
Has Abstractpub_date
2014-11-01 00:00:00pages
114-21issue
1eissn
0161-5890issn
1872-9142pii
S0161-5890(14)00139-4journal_volume
62pub_type
杂志文章abstract::V(D)J recombination is a mechanism peculiar to the somatic rearrangement of antigen receptor genes. It requires both expression of the RAG-1 and RAG-2 recombinases and accessibility of the substrate to its recombinase and post-cleavage/DNA repair stage. TCR revision is a genetic correction mechanism that changes T cel...
journal_title:Molecular immunology
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pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2017-11-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章,评审
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更新日期:2017-06-01 00:00:00
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journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/0161-5890(82)90327-3
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pub_type: 杂志文章
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journal_title:Molecular immunology
pub_type: 杂志文章,评审
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更新日期:2009-09-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2002-02-01 00:00:00
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journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2008.08.275
更新日期:2008-12-01 00:00:00
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journal_title:Molecular immunology
pub_type: 杂志文章
doi:10.1016/j.molimm.2005.07.009
更新日期:2006-03-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2005-06-01 00:00:00
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pub_type: 杂志文章
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更新日期:1994-10-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
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