Liver X receptor agonist T0901317 inhibits TGF-β1-induced α-SMA expression in normal human lung fibroblasts / 南方医科大学学报
Journal of Southern Medical University
;
(12): 744-748, 2011.
Article
in Chinese
| WPRIM
| ID: wpr-332558
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the effect of liver X receptor agonist T0901317 on transforming growth factor-β1 (TGF-β1)-induced expression of α-smooth muscle actin (α-SMA) in normal human lung fibroblasts.</p><p><b>METHODS</b>Primary normal human lung fibroblast isolated from the lung specimens of lung cancer patients by explant culture technique were identified with immunostaining for vimentin and keratin. The cells in passages 4 to 10 were treated with T0901317 and/or TGF-β1, and RT-PCR, Western blotting and immunofluorescence assay were used to detect α-SMA expression in the fibroblasts.</p><p><b>RESULTS</b>Lung fibroblast expressed vimentin but not keratin. The results of RT-PCR, Western blotting and immunofluorescence assay all showed that normal human lung fibroblasts constitutively expressed α-SMA under baseline condition, and TGF-β1 at 5 ng/ml induced a significant upregulation of α-SMA both at the mRNA and protein levels. Liver X receptor agonist T0901317 (5 µg/ml) significantly inhibited TGF-β1-induced upregulation of α-SMA expression.</p><p><b>CONCLUSION</b>Liver X receptor agonist T0901317 can inhibit the upregulation of α-SMA in normal human lung fibroblasts induced by TGF-β1, suggesting the potential value of liver X receptor agonist in the treatment of lung fibrosis.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pharmacology
/
Sulfonamides
/
RNA, Messenger
/
Cells, Cultured
/
Actins
/
Cell Biology
/
Transforming Growth Factor beta1
/
Orphan Nuclear Receptors
/
Fibroblasts
/
Liver X Receptors
Type of study:
Prognostic study
Limits:
Female
/
Humans
Language:
Chinese
Journal:
Journal of Southern Medical University
Year:
2011
Type:
Article
Similar
MEDLINE
...
LILACS
LIS