Molecular mechanism of interleukin-13-induced mucus hypersecretion in rat airway / 南方医科大学学报
Journal of Southern Medical University
; (12): 73-76, 2011.
Article
in Chinese
| WPRIM (Western Pacific)
| ID: wpr-267669
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the effect of interleukin-13 (IL-13) on mucus secretion in vivo and the possible mechanism.</p><p><b>METHODS</b>The SD rats were randomly divided into control group, IL-13 group and IL-13 plus SP600125 group. The phosphorylation of extracellular signal-regulated kinase 1/2 (ERK1/2), c-Jun N-terminal kinase 1/2 (JNK1/2) and the level of MUC5AC in the lung tissues were examined using Western blotting. RT-PCR was performed to examine the mRNA level of STAT4 and STAT6, and electrophoretic mobility shift assays (EMSA) was used to detect the DNA-binding activities of Forkhead box a2 (FOXA2) and activator protein-1 (AP-1).</p><p><b>RESULTS</b>IL-13 caused a significant increase in MUC5AC and p-JNK1/2 expression, but did not affect the phosphorylation of ERK1/2. The expression of MUC5AC was attenuated after treatment with SP600125. A significant increase in STAT6 was observed in IL-13 group compared with that in the control group, whereas the expression of STAT4 mRNA was not significantly affected. The DNA-binding activity of FOXA2 was down-regulated after IL-13 exposure, which did not affect the DNA-binding activity of AP-1.</p><p><b>CONCLUSION</b>IL-13 down-regulates mucus secretion via STAT6-FOXA2 pathway in vitro.</p>
Full text:
Available
Database:
WPRIM (Western Pacific)
Main subject:
Pharmacology
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Bronchi
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RNA, Messenger
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Signal Transduction
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Random Allocation
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Rats, Sprague-Dawley
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Interleukin-13
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Bodily Secretions
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STAT6 Transcription Factor
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Hepatocyte Nuclear Factor 3-beta
Limits:
Animals
Language:
Chinese
Journal:
Journal of Southern Medical University
Year:
2011
Document type:
Article