Insulin-like growth factor-I and estrogen interactions in breast cancer

被引:37
|
作者
Martin, MB [1 ]
Stoica, A [1 ]
机构
[1] Georgetown Univ, Dept Oncol, Vincent T Lombardi Canc Ctr, Washington, DC 20057 USA
来源
JOURNAL OF NUTRITION | 2002年 / 132卷 / 12期
关键词
insulin-like growth factor-I; estradiol; estrogen receptor;
D O I
10.1093/jn/132.12.3799S
中图分类号
R15 [营养卫生、食品卫生]; TS201 [基础科学];
学科分类号
100403 ;
摘要
There is increasing evidence that estradiol and insulin-like growth factor-I (IGF-I) act through a complex cross-talk mechanism to stimulate the proliferation of normal mammary epithelium to increase the risk of breast cancer. The emerging model of cross-talk suggests that estradiol regulates the expression of IGF-I and the IGF receptor I. The subsequent binding of IGF-I to its receptor initiates an intracellular signal transduction pathway that activates transcription factors, including the estrogen receptor. Recent studies show that the effects of IGF-I on estrogen receptor activity are mediated in part by the protein kinase A and phosphatidylinositol-3-kinase/Akt pathways.
引用
收藏
页码:3799S / 3801S
页数:3
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