|
KMID : 0191120020170060765
|
|
Journal of Korean Medical Science
2002 Volume.17 No. 6 p.765 ~ p.771
|
|
|
Interleukin-1β Induces MUC2 Gene Expression and Mucin Secretion via Activation of PKC-MEK/ERK, and PI3K in Human Airway Epithelial Cells
|
|
Yong Dae Kim/Yong Dae Kim
Jae Yun Jeon/Hyun Jae Woo/Jung Cheul Lee/Jin Hong Chung/Si Youn Song/Seok Keun Yoon/Suk Hwan Baek
|
|
|
Abstract
|
|
|
|
Interleukin 1 beta (IL-1 beta), a proinflammatory cytokine, is related with inflammatory diseases and it up-regulates MUC2 gene expression and mucin secretion. This study was designed to investigate the signal transduction pathway of the IL-1 beta-mediated MUC2 gene expression and mucin secretion in human airway epithelial cells. In cultured human airway NCI-H292 epithelial cells, the steady state of the mRNA level of MUC2 gene expression and mucin secretion induced by IL-1 were determined by reverse transcriptase-polymerase chain reaction (RT-PCR), enzyme immunoassay, and immunoblot analysis. To observe the signal pathway of the IL-1 beta-mediated MUC2 gene expression and mucin secretion, we used several specific inhibitors. PD98059 (MEK/ERK inhibitor) suppressed IL-1 beta-mediated MUC2 gene expression and mucin secretion, while SB203580 (p38 inhibitor) did not. Ro31-8220 (PKC inhibitor) inhibited IL-1 beta-mediated MUC2 gene expression and mucin secretion. It inhibited ERK phosphorylation, but did not inhibit p38 phosphorylation. LY294002 (PI3K inhibitor) also suppressed MUC2 expression, but did not inhibit any MAPKs phosphorylation. These results suggest that the IL-1 -mediated MUC2 gene expression and mucin secretion in NCI-H292 cells are regulated through activation of the PKC-MEK/ERK pathway, and that PI3K is also involved in the IL-1 beta-mediated MUC2 gene expression and mucin secretion.
|
|
|
KEYWORD
|
|
|
Mucins, Interleukin-1, Cytokines, Epithelial Cells, Signal Transduction,
|
|
|
FullTexts / Linksout information
|
|
 
|
|
|
Listed journal information
|
|
    
|
|