Glycyrrhizin inhibits human neutrophil elastase-induced mucin 5AC overproduction in human bronchial epithelial cells

To investigate the effect of glycyrrhizin (Gly) on human neutrophil elastase (HNE)- induced mucin (MUC) 5AC overproduction in human bronchial epithelial cells (16HBE), and the potential signaling pathway involved in this process. The cultured cells were divided into 3 groups: a control group, cultur...

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Veröffentlicht in:Zhong nan da xue xue bao. Journal of Central South University. Yi xue ban 2014-03, Vol.39 (3), p.252-257
Hauptverfasser: Xiao, Qingrong, Zhou, Xiangdong
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Sprache:chi
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Zusammenfassung:To investigate the effect of glycyrrhizin (Gly) on human neutrophil elastase (HNE)- induced mucin (MUC) 5AC overproduction in human bronchial epithelial cells (16HBE), and the potential signaling pathway involved in this process. The cultured cells were divided into 3 groups: a control group, cultured in serum-free DMEM medium; an HNE group, pretreated with HNE alone; and a Gly group, incubated with HNE and Gly. After stimulation with a variety of Gly concentrations, the cytotoxicity was assessed by methyl thiazolyl tetrazolium method. The mRNA expressions of p38, nuclear factor κB (NF-κB) p65, inhibitory κBα (IκBα) and MUC5AC were detected by real-time PCR. The phosphorylation levels of p38 (p-p38), NF-κB p65 (p-NF-κB p65) and IκBα (p-IκBα) were measured by Western blot while the levels of MUC5AC protein were analyzed by emzyme-linked immunosorbent assay and immunofluorescence. Compared with the control group, the expression levels of MUC5AC mRNA and protein in the HNE group were both significantly increased
ISSN:1672-7347
DOI:10.11817/j.issn.1672-7347.2014.03.005