HNF1 activates transcription of the human gene for insulin-like growth factor binding protein-1.
HNF1 activates transcription of the human gene for insulin-like growth factor binding protein-1.
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HNF1 激活人类胰岛素样生长因子结合蛋白 1 基因的转录。
DOI:
10.1089/dna.1993.12.283
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发表时间:
1993
影响因子:
3.1
通讯作者:
Suwanichkul,A
中科院分区:
文献类型:
--
作者:
Powell,DR;Suwanichkul,A
Insulin-like growth factor binding protein-1 (IGFBP-1) is expressed primarily in the liver, kidney, and uterus. Basal IGFBP-1 promoter activity in human HEP G2 hepatoma cells is dependent upon a proximal promoter element that binds hepatic nuclear factor 1 (HNF1), a protein that is likely to be an important factor regulating the expression of many genes in liver and kidney. To test whether HNF1 activates IGFBP-1 transcription, HEP G2 cells and HeLa cells were cotransfected transiently with HNF1 expression vectors and with IGFBP-1 promoter/chloramphenicol acetyltransferase reporter gene constructs. HNF1 increased IGFBP-1 promoter activity in both HEP G2 and HeLa cells. Gel mobility-shift assays and additional transfections in HeLa cells showed that expressed full-length and carboxy-terminal truncated forms of HNF1 could each bind the HNF1ciselement of the IGFBP-1 promoter; however, significanttrans/ts-activation only occurred in the presence of the full-length HNF1 protein, similar to past experience with these two HNF1 forms and the albumin promoter. Further studies showed that IGFBP-1 promoter constructs containing mutations with high or low affinity for HNF1 responded to HNF1 expression with increased or decreased activity, respectively, relative to the native promoter. These studies suggest that HNF1 and/or related proteins play a role in hepatic, and perhaps also renal, expression of IGFBP-1.
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DOI:
10.1210/jcem-69-2-246
发表时间:
1989
期刊:
The Journal of clinical endocrinology and metabolism
影响因子:
--
作者:
M. Lewitt;R. Baxter
通讯作者:
R. Baxter
DOI:
10.1210/mend-5-7-938
发表时间:
1991
期刊:
Molecular endocrinology (Baltimore, Md.)
影响因子:
--
作者:
Shimasaki,S;Gao,L;Shimonaka,M;Ling,N
通讯作者:
Ling,N
影响因子:
5.3
作者:
K. Mohn;A. Melby;D. Tewari;T. Laz;R. Taub
通讯作者:
R. Taub
DOI:
10.1210/mend-3-5-846
发表时间:
1989
期刊:
Molecular endocrinology (Baltimore, Md.)
影响因子:
--
作者:
Cubbage,ML;Suwanichkul,A;Powell,DR
通讯作者:
Powell,DR
影响因子:
11.4
作者:
V. Simone;Gennaro Cilibertol;E. Hardon;Giacomo Paonessa;Franco Palla;Lennart Lundberg;Riccardo Cortese
通讯作者:
Riccardo Cortese