Thalidomide inhibits TGF-β1-induced activation of CTGF gene promoter in HELF cell line
10.3969/j.issn.1000-4718.2014.04.021
- VernacularTitle:沙利度胺抑制 TGF-β1诱导的 HELF 细胞中结缔组织生长因子基因启动子的激活
- Author:
Daan WANG
;
Yixin LIN
;
Zheng WANG
;
Chaolei SANG
;
Daxiang LU
;
Huadong WANG
;
Chaofeng HU
;
Wei WEI
;
Jianwei JIANG
;
Yongmei FU
;
Hongmei LI
- Publication Type:Journal Article
- Keywords:
Thalidomide;
Human embryonic lung fibroblast;
Connective tissue growth factor
- From:
Chinese Journal of Pathophysiology
2014;33(4):693-697
- CountryChina
- Language:Chinese
-
Abstract:
AIM:To investigate the effects of thalidomide ( THD) on the activation of connective tissue growth factor ( CTGF) gene promoter induced by transforming growth factor β1 ( TGF-β1 ) in human embryonic lung fibroblasts ( HELF) .METHODS:DNA sequence of CTGF gene promoter was cloned into luciferase reporter gene vector to construct the recombinant eukaryotic expression vector pGL 3-CTGFP, and the recombinant vector was transfected into HELF cell line.The effects of TGF-β1 and THD on the activation of CTGF gene promoter were detected by dual-luciferase analysis . RESULTS:TGF-β1 increased the reporter gene activity dose-dependently (P<0.05), with a plateau at 5 μg/L being 2.16 folds as high as the control .TGF-β1-induced increase in the reporter gene activity was also time-dependent ( P<0.05).After exposure to TGF-β1(5 μg/L), the level of luciferase activity reached its peak at 12 h and was 2.52 folds as high as the control .THD significantly inhibited TGF-β1-induced increase in the reporter gene activity in a dose-dependent manner , but its basal activity was not changed .CONCLUSION: TGF-β1 stimulates the transcriptional activity of CTGF gene promoter in HELF cells in a dose-and time-dependent manner , while THD may inhibit the effects dose-dependently .
