Abstract：
AIM:To investigate the expression of the v-raf-1 murine leukemia viral oncogene homolog 1 (Raf-1) and its role in the innate immune response of human corneal epithelial cells (HCECs) infected by Aspergillus fumigatus. METHODS:HCECs were cultured in vitro. They were randomly divided into 4 groups, including control group, Aspergillus fumigatus group, GW5074 (an inhibitor of Raf-1) group and Laminarin [an inhibitor of Dendriti-cell-associated C-type lectin 1 (Dectin-1)] group. The protein expression level of total Raf-1 and p-Raf-1was measured by Western blot. The expression of IL-6 and IL-8 mRNA in each group was detected by real-time polymerase chain reaction. RESULTS:In Aspergillus fumigatus group, total Raf-1 protein levels in HCECs remained unchanged at 5, 15, 30 and 45min after infection, while p-Raf-1 expression was significantly enhanced at 30min after infection compared with control group. However, the expression of p-Raf-1 was apparently declined after treated with GW5074 or Laminarin compared with Aspergillus fumigatus group. The expression levels of IL-6, IL-8 mRNA were significantly increased after stimulation with fumigatus compared with control group. Pre-treated with GW5074 significantly inhibited Aspergillus fumigatus-induced upregulation of IL-8 and IL-6. CONCLUSION:Aspergillus fumigatus stimulation can elevate the expression of p-Raf-1 in HCECs in vitro. Dectin-1/Raf-1 signal pathway may play a role on regulating the expression of inflammatory cytokines, including IL-6 and IL-8.
journal_name
Int J Ophthalmoljournal_title
International journal of ophthalmologyauthors
Zhao GQ,Lin J,Hu LT,Yin XN,Wang Q,Xu Q,Li Hdoi
10.18240/ijo.2016.10.01subject
Has Abstractpub_date
2016-10-18 00:00:00pages
1371-1375issue
10eissn
2222-3959issn
2227-4898pii
ijo-09-10-1371journal_volume
9pub_type
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