Effect of PDTC on the NF-κB activation and the expression of inflammatory cytokines in THP-1 macrophages induced by rPVL

VernacularTitle:PDTC对PV-杀白细胞素(PVL)诱导THP-1巨噬细胞NF-κB活化及炎性因子表达的影响
Author: Xin ZHOU ; Xiaoling MA ; Wenjiao CHANG ; Cuiping ZHANG ; Su PU ; Qiang XIE
Publication Type:Journal Article
Keywords: Panton-valentine leucocidin; PDTC; NF-κB; IL-8; IL-6
From: Chinese Journal of Microbiology and Immunology 2012;(10):850-854
CountryChina
Language:Chinese
Abstract: Objective To investigate effect of PDTC on the NF-κB activation and the expression of inflammatory cytokines in THP-1 macrophages induced by rPVL.Methods The study was divided into three groups:PBS-treated control group,rPVL-treated group and PDTC group which was given 100 μmol/L PDTC at 60 min before rPVL exposure.Immunohistochemistry method was used to test the translocation of NF-κB protein; the expression of NF-κB and IκB protein was analyzed by Western blot; RT-PCR and ELISA was performed to test expression of IL-8 and L-6 in THP-1 macrophages.Results Compared with rPVL-treated group,the activation of NF-κB and the expression of IL-8 and L-6 in PDTC group was significantly decreased.The protein secretions of IL-8 and IL-6 were reduced to 6.78 ng/ml,3.88 ng/ml,receptively(P ＜0.05).Conclusion The inhibitor of NF-κB,PDTC,could significantly decrease the secretion of pro-inflammatory in THP-1 macrophages by rPVL,and it suggested that PDTC played an important role in protecting tissues from damage induced by rPVL.