Oncostatin M Stimulates Transcription of the Human α2(I) Collagen Gene via the Sp1/Sp3-binding Site*
Oncostatin M Stimulates Transcription of the Human α2(I) Collagen Gene via the Sp1/Sp3-binding Site*
复制标题
制瘤素 M 通过 Sp1/Sp3 结合位点刺激人类 α2(I) 胶原蛋白基因的转录*
DOI:
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复制
发表时间:
1997
影响因子:
4.8
通讯作者:
M. Trojanowska
中科院分区:
文献类型:
--
作者:
H. Ihn;E. Leroy;M. Trojanowska
Oncostatin M (OSM), a member of the hematopoietic cytokine family, has been implicated in excessive bone growth and in the process of fibrosis. As part of an ongoing study of the molecular mechanisms of fibrosis, we have investigated the transcriptional regulation of the α2(I) collagen gene by OSM in human fibroblasts. An OSM response element was mapped by deletional analysis between base pairs (bp) −148 and −108 in the α2(I) collagen promoter. Further functional analysis of the α2(I) collagen promoter containing various substitution mutations revealed that both the basal activity and OSM stimulation of this promoter are mediated by a TCCTCC motif located between bp −128 and −123. Furthermore, three copies of the 12-bp synthetic α2(I) collagen promoter fragment containing the “TCC” motif conferred OSM inducibility to the otherwise unresponsive thymidine kinase promoter. Electrophoretic mobility shift assays demonstrated that the TCCTCC motif constitutes a novel binding site for the transcription factors Sp1 and Sp3. No differences have been observed in in vitro gel shift binding assays between unstimulated and OSM-stimulated fibroblasts. However, subtle conformational changes were detected in the region of the promoter surrounding TCC repeats after OSM stimulation using in vivofootprint analysis. In conclusion, this study characterized a dual-function response element that mediates the basal activity and OSM stimulation of the human α2(I) collagen promoter.
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影响因子:
15.9
作者:
POSTLETHWAITE, AE;HOLNESS, MA;RAGHOW, R
通讯作者:
RAGHOW, R
影响因子:
15.9
作者:
AMARAL, MC;MILES, S;NEL, AE
通讯作者:
NEL, AE
影响因子:
15.9
作者:
REITAMO, S;REMITZ, A;UITTO, J
通讯作者:
UITTO, J
DOI:
--
发表时间:
1987
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Goldring,MB;Krane,SM
通讯作者:
Krane,SM
DOI:
--
发表时间:
1992
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Truter,S;DiLiberto,M;Inagaki,Y;Ramirez,F
通讯作者:
Ramirez,F