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http://purl.uniprot.org/citations/26335962http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/26335962http://www.w3.org/2000/01/rdf-schema#comment"

Background

House dust mites (HDMs) are the most important source of indoor aeroallergens that contribute to the rising incidence of allergic diseases such as allergic asthma. The major HDM, Der f 2, induces inflammatory cytokine expression. Little is known about the signaling pathway involved.

Objective

We wanted to define the Der f 2 signaling pathway from its receptor to the transcription factor responsible for IL-13 expression and production.

Methods

Human bronchial epithelial cells were stimulated with Der f 2. The release and gene expression of IL-13 were measured by means of ELISA and RT-PCR, respectively. In the airway inflammation mouse model, airway responses were assessed using ELISA, histology, BAL fluid, and methacholine responsiveness.

Results

Here, we show that Der f 2 binds to TLR4 and induces IL-13 expression and production. In the airway inflammation mouse model, Der f 2-induced IL-13 production significantly decreased with treatment of TAK-242, a novel TLR4 inhibitor. Activation of TLR4 by Der f 2 requires the recruitment and activation of Syk, which leads to phosphorylation of PLCγ and membrane translocation of PKCα. p38 MAPK is then activated by PKCα and stimulates PLD1 activity by phosphorylating the Thr147 residue of PLD1. PLD1 activation enhanced binding of ROCK1 to ATF-2 and leads to increased expression of IL-13.

Conclusion

Our data extend the knowledge for a variety of possible roles of PLD1 in allergic disorders including asthma pathogenesis and suggest possible candidacy of PLD1 as a molecular target for novel therapeutic approaches."xsd:string
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http://purl.uniprot.org/citations/26335962http://purl.uniprot.org/core/author"Choi H.J."xsd:string
http://purl.uniprot.org/citations/26335962http://purl.uniprot.org/core/author"Kim Y.J."xsd:string
http://purl.uniprot.org/citations/26335962http://purl.uniprot.org/core/author"Park S.Y."xsd:string
http://purl.uniprot.org/citations/26335962http://purl.uniprot.org/core/author"Cho J.H."xsd:string
http://purl.uniprot.org/citations/26335962http://purl.uniprot.org/core/author"Park J.W."xsd:string
http://purl.uniprot.org/citations/26335962http://purl.uniprot.org/core/author"Oh J.W."xsd:string
http://purl.uniprot.org/citations/26335962http://purl.uniprot.org/core/author"Han J.S."xsd:string
http://purl.uniprot.org/citations/26335962http://purl.uniprot.org/core/author"Sohn J.H."xsd:string
http://purl.uniprot.org/citations/26335962http://purl.uniprot.org/core/date"2015"xsd:gYear
http://purl.uniprot.org/citations/26335962http://purl.uniprot.org/core/name"Allergy"xsd:string
http://purl.uniprot.org/citations/26335962http://purl.uniprot.org/core/pages"1569-1579"xsd:string
http://purl.uniprot.org/citations/26335962http://purl.uniprot.org/core/title"The TLR4-associated phospholipase D1 activation is crucial for Der f 2-induced IL-13 production."xsd:string
http://purl.uniprot.org/citations/26335962http://purl.uniprot.org/core/volume"70"xsd:string
http://purl.uniprot.org/citations/26335962http://www.w3.org/2004/02/skos/core#exactMatchhttp://purl.uniprot.org/pubmed/26335962
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