Role of Dectin-1 in the production of IL-10 and TNF-α by rat tracheal epithelial cells stimulated with heat-treated Candida glabrata
10.3969/j.issn.1671-9638.2017.01.003
- VernacularTitle:Dectin-1在热处理光滑假丝酵母菌刺激大鼠气道上皮细胞中的作用及对IL-10和TNF-α表达的影响
- Author:
Ying ZHAO
;
Xueping LUO
;
Xue ZHANG
;
Wenming SONG
- Keywords:
Dectin-1 receptor;
heat-treated Candida glabrata;
rat tracheal epithelial cell;
laminarin;
IL-10;
TNF-α
- From:
Chinese Journal of Infection Control
2017;16(1):10-15
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effect of Dectin-1 on the release of inflammatory factors interleukin-10 (IL-10) and tumor necrosis factor-α (TNF-α) in rat tracheal epithelial cells (RTECs) stimulated with heat-treated Candida glabrata (C.glabrata).Methods RTECs cultivated in vitro were randomly divided into three groups,including control group(RTECs + sterile normal saline),fungal stimulation group(RTECs + heat-treated C.glabrata),and inhibitor intervention group(RTECs + laminarin + heat-treated C.glabrata),cells were harvested after incubation for 0,2,4,6 hours respectively,cell survival rate was determined by MTT method,expression of Dectin-1 was analyzed by Western Blot,expression of IL-10 and TNF-α were detected by enzyme-linked immunosorbent assay (ELISA).Results Heat-treated C.glabrata destroyed cell structure and reduced cell survival rate.At the beginning of the culture (0 h),cell survival rate,expressions of Dectin-1,IL-10 and TNF-α among three groups were all not significantly different(all P＞0.05).After incubation for 2,4,6 hours,expressions of Dectin-1,IL-10 and TNF-α in fungal stimulation group and inhibitor intervention group were both significantly higher than control group;expressions of Dectin-1,IL-10,and TNF-α in inhibitor intervention group was lower than fungal stimulation group(all P＜0.05).The expressions of IL-10 in inhibitor intervention group at 0 h and 2 h was not significantly different,expressions of Dectin-1,IL-10,and TNF-α in fungal stimulation group and inhibitor intervention group at different incubation periods were significantly different(all P＜0.05).Conclusion Dectin-1 is an important receptor for RTECs to recognize the heat-treated C.glabrata,it induces the release of IL-10 and TNF-α,and mediate the occurrence of inflammation.
