Abstract：
BACKGROUND:Eosinophilic chronic rhinosinusitis with nasal polyps (eCRSwNP) is characterized by Th2-skewed inflammation with eosinophilic infiltration. Thymic stromal lymphopoietin (TSLP) promotes the development of allergic inflammation. Although increased TSLP is found in eCRSwNP, little is known about whether TSLP regulates eotaxin-1 production, a potent eosinophil chemoattractant that recruits and activates eosinophils. OBJECTIVE:The aim of this study was to investigate the effects and mechanisms of TSLP in eotaxin-1 production in the eosinophilic inflammation of eCRSwNP. METHODS:Human nasal epithelial cells (HNECs) from eCRSwNP patients were stimulated with recombinant human TSLP in the presence or absence of CYT387 (Janus kinase 1/2 inhibitor). Phosphorylated signal transducer activator of transcription 3 (p-STAT3) was measured by using immunocytochemistry. Eotaxin-1 expression was determined by using real-time PCR. Western blotting was used to detect the levels of p-STAT3 and eotaxin-1 protein. RESULTS:The treatment with TSLP induced STAT3 phosphorylation in HNECs, and promoted p-STAT3 nuclear translocation, leading to a time-dependent increase of eotaxin-1 expression. However, these effects were attenuated by CYT387 pretreatment. CONCLUSION:TSLP regulated eotaxin-1 production in HNECs via JAK1/2-STAT3 signaling, which might contribute to the eosinophilic inflammation of eCRSwNP.
journal_name
Rhinologyjournal_title
Rhinologyauthors
Wang WW,Lu DM,Zheng M,Zhang JG,Zhang Bdoi
10.4193/Rhin17.045subject
Has Abstractpub_date
2018-12-01 00:00:00pages
370-377issue
4eissn
0300-0729issn
1996-8604pii
1815journal_volume
56pub_type
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