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Xianyu decoction attenuates the inflammatory response of human lung bronchial epithelial cell.
Biomedicine & Pharmacotherapy 2018 June
BACKGROUND: Xianyu decoction (XD), a Chinese experience recipe, shows inhibitory effects on lung cancer. However, the potential functions of XD on pneumonia were unknown. This study aimed to investigate the effect of XD on inflammatory response of childhood pneumonia.
METHODS: Human lung bronchial epithelial cell line BEAS-2B was cultured in different doses of LPS with or without XD treatment. The expression of miR-15a and IKBKB were altered by transfection assay. RT-PCR and western blot were used to evaluate the effects of XD and miR-15a mimic/inhibitor on the expression levels of miR-15a, IKBKB, p65 and IκBα. ELISA was used to determine the levels of CRP, IL-6 and IL-8.
RESULTS: High expression of miR-15a was observed in serum and cell model of pneumonia. miR-15a promoted the expression of inflammatory cytokines IL-6, IL-8, CRP and IKBKB in vitro. XD treatment downregulated the level of miR-15a in pneumonia children. In addition, XD reduced the expression of inflammatory cytokines and the phosphorylation levels of p65 and IκBα by inhibition of miR-15a and IKBKB expression in LPS-stimulated BEAS-2B cells.
CONCLUSION: XD downregulated the level of miR-15a in serum of pneumonia children. Additionally, XD inhibited inflammatory response in LPS-stimulated BEAS-2B cells possibly by blocking IKBKB/NF-κB signal pathway which was regulated by miR-15a.
METHODS: Human lung bronchial epithelial cell line BEAS-2B was cultured in different doses of LPS with or without XD treatment. The expression of miR-15a and IKBKB were altered by transfection assay. RT-PCR and western blot were used to evaluate the effects of XD and miR-15a mimic/inhibitor on the expression levels of miR-15a, IKBKB, p65 and IκBα. ELISA was used to determine the levels of CRP, IL-6 and IL-8.
RESULTS: High expression of miR-15a was observed in serum and cell model of pneumonia. miR-15a promoted the expression of inflammatory cytokines IL-6, IL-8, CRP and IKBKB in vitro. XD treatment downregulated the level of miR-15a in pneumonia children. In addition, XD reduced the expression of inflammatory cytokines and the phosphorylation levels of p65 and IκBα by inhibition of miR-15a and IKBKB expression in LPS-stimulated BEAS-2B cells.
CONCLUSION: XD downregulated the level of miR-15a in serum of pneumonia children. Additionally, XD inhibited inflammatory response in LPS-stimulated BEAS-2B cells possibly by blocking IKBKB/NF-κB signal pathway which was regulated by miR-15a.
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