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인체 정상 코점막 상피세포에서 p38 MAP kinase 의 신호전달과정이 MUC8 유전자 발현에 미치는 영향.

Other Titles
 The Role of p38 MAP Kinase Signal Transduction in the Induction of MUC 8 Gene Expression in Normal Human Nasal Epithelial Cells 
Authors
 윤주헌  ;  이원재 
Citation
 Korean Journal of Otolaryngology (대한이비인후과학회지), Vol.43(7) : 719-723, 2000 
Journal Title
Korean Journal of Otolaryngology(대한이비인후과학회지)
ISSN
 1225-035X 
Issue Date
2000
Keywords
Airway epithelial cells ; p38 MAP kinase ; MUC 8 ; Signal transduction
Abstract
ABSTRACT
BACKGROUND AND OBJECTIVES:
In cystic fibrosis, chronic bronchitis, and asthma, the mucociliary mechanism is impaired when mucin is produced excessively. The mRNA encoding MUC8 has been shown to be the major up-regulated mucin under inflammatory condition and is likely to contribute to the airway mucus plugging characteristic of these diseases. The aim of this study is to determine the intracellular signaling pathway directly involved in the MUC8 regulation following inflammatory mediator treatments.
MATERIALS AND METHOD:
Passage-2 normal human airway epithelial cells were used in all experiments. Inflammatory signal-induced MAP kinase activity was measured by Western blot analysis using phosphospecific anti-active MAP kinase antibodies. Inflammatory signal-induced MUC8 expression was measured in the absence or presence of SB203580 by the semi-quantative RT-PCR.
RESULTS:
Inflammatory stimuli such as LPS, TNF-alpha, and IL-lbeta activated the p38 MAP kinase and subsequently up-regulated the MUC8 expression. Interestingly, the TNF-alpha or IL-lbeta-inducibility of the MUC8 gene expression was greatly enhanced by specific inhibition of the p38 MAP kinase by using SB 203580
CONCLUSION:
These results suggest that the intracellular p38 MAP kinase activity is a negative regulator for the MUC8 up-regulation in human nasal epithelial cells following infiammatory stimuli.
Files in This Item:
T200003192.pdf Download
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Otorhinolaryngology (이비인후과학교실) > 1. Journal Papers
Yonsei Authors
Yoon, Joo Heon(윤주헌)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/172298
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