Negative regulation of insulin signaling by PTEN/MMAC1 in 3T3-L1 adipocytes

被引:0
|
作者
Nakashima, N [1 ]
Olefsky, JM [1 ]
Umeda, F [1 ]
Nawata, H [1 ]
机构
[1] Nakatsu Natl Hosp, Dept Internal Med, Nakatsu City 8710024, Japan
关键词
lipid phosphatase; PIP3; PI3-kinase; glucose transport; GLUT; 1;
D O I
暂无
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
PTEN is a tumor suppressor with sequence homology to protein tyrosine phosphatases and the cytoskeletal protein tensin. PTEN is capable of dephosphorylating PI(3,4,5)P-3 in vitro and down-regulating its levels in insulin-stimulated 293 cells. We found that PTEN acts as a negative regulator of insulin signaling pathway in 3T3 L1 adipocytes, and that GLUT I translocation is actually dependent on the balance between PI3-kinase and PTEN activity, although PTEN's physiological role is still unknown.
引用
收藏
页码:169 / 172
页数:4
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