Regulation of Id1 protein expression in mouse embryo fibroblasts by the type 1 insulin-like growth factor receptor

被引:21
作者
Belletti, B [1 ]
Drakas, R [1 ]
Morrione, A [1 ]
Tu, X [1 ]
Prisco, M [1 ]
Yuan, T [1 ]
Casaburi, I [1 ]
Baserga, R [1 ]
机构
[1] Thomas Jefferson Univ, Kimmel Canc Ctr, Philadelphia, PA 19107 USA
关键词
D O I
10.1006/excr.2002.5542
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
The activated type I insulin-like growth factor (IGF-IR) increases the expression of Id1 proteins in mouse embryo fibroblasts (MEF). Up-regulation depends on a functional receptor and on multiple pathways originating from different domains of the receptor. In MEF, Id1 protein expression is also up-regulated by serum and certain oncogenes. Signaling through Stat3 plays an important, but not exclusive, role in the up-regulation of Id1 protein levels. In all instances, the increase in Id1 protein expression is paralleled by a corresponding increase in Id1 promoter activity, as measured with a reporter gene. (C) 2002 Elsevier Science (USA).
引用
收藏
页码:107 / 118
页数:12
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