Melatonin inhibits MUC5AC production via suppression of MAPK signaling in human airway epithelial cells = 멜라토닌의 MAPK 시그날을 통한 MUC5AC 생합성 억제

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Title
Melatonin inhibits MUC5AC production via suppression of MAPK signaling in human airway epithelial cells = 멜라토닌의 MAPK 시그날을 통한 MUC5AC 생합성 억제
Author(s)
In Sik Shin; Ji Won Park; Na Rae Shin; Chan Mi Jeon; Ok-Kyoung Kwon; M Y Lee; Hui Seong Kim; J C Kim; Sei-Ryang OhKyung Seop Ahn
Bibliographic Citation
Journal of Pineal Research, vol. 56, no. 4, pp. 398-407
Publication Year
2014
Abstract
Mucus acts as a primary defense system in the airway against various stimuli. However, excess mucus production causes a reduction in lung function via limitation of the airflow in the airway of patients suffering from asthma or chronic obstructive pulmonary disease (COPD). In this study, we evaluated the effects of melatonin on the production of MUC5AC, a major constituent of the mucin that is secreted from the airway, using epidermal growth factor (EGF)-stimulated NCI-H292 cells, a human mucoepidermoid carcinoma cell line, and an ovalbumin (OVA)-induced asthma murine model. Melatonin treatment significantly reduced the mRNA and protein levels of MUC5AC and reduced interleukin (IL)-6 production in EGF-stimulated H292 cells. Melatonin markedly decreased the phosphorylation of MAPKs, including ERK1/2, JNK, and p-38, induced by EGF stimulation. These findings were consistent with the results using MAPK inhibitors. Particularly, co-treatment with melatonin and a MAPK inhibitor more effectively suppressed MAPK phosphorylation than treatment with a MAPK inhibitor alone, which resulted in a reduction in MUC5AC expression. In the asthma murine model, melatonin-treated mice exhibited a marked reduction in MUC5AC expression in the airway compared with the OVA-induced mice. These reductions were accompanied by reductions in proinflammatory cytokine production and inflammatory cell infiltration. Collectively, these findings indicate that melatonin effectively inhibits MUC5AC expression. These effects may be closely associated with the inhibition of MAPK phosphorylation. Furthermore, our study suggests that melatonin could represent a potential therapeutic for chronic airway diseases, such as asthma and COPD.
Keyword
asthmaMAPKsmelatoninMUC5ACNCI-H292
ISSN
0742-3098
Publisher
Wiley
DOI
http://dx.doi.org/10.1111/jpi.12127
Type
Article
Appears in Collections:
Ochang Branch Institute > Natural Medicine Research Center > 1. Journal Articles
Ochang Branch Institute > 1. Journal Articles
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