Sennidin stimulates glucose incorporation in rat adipocytes

被引:9
作者
Abe, Daigo [1 ]
Saito, Takeshi [1 ]
Sekiya, Keizo [1 ]
机构
[1] Natl Agr Res Ctr Western Reg, Kagawa 7658508, Japan
关键词
insulin; insulin mimetic; oriental medical plant; sennidin; glucose transport; wortmannin; Akt; glucose transporter 4;
D O I
10.1016/j.lfs.2006.03.007
中图分类号
R-3 [医学研究方法]; R3 [基础医学];
学科分类号
1001 ;
摘要
A novel small molecule compound which exerts insulin mimetic is desirable. Dozens of natural products that have quinone, naphthoquinone, or anthraquinone structure, were tested by a glucose incorporation assay. We found that sennidin A, anthraquinone derivative, stimulated glucose incorporation to near level of maximal insulin-stimulated and sennidin B, a stereoisomer of sennidin A, also stimulated, but the activity of sennidin B was lower than sennidin A. Sennidin A-stimulated glucose incorporation was completely inhibited by wortmannin. Sennidin A did not induce tyrosine phosphorylation of insulin receptor (IR) and insulin receptor substrate-1 (IRS-1), but induced phosphorylation of Akt and glucose transporter 4 (GLUT4) translocation. Our results suggest that in rat adipocytes, sennidin A stimulates glucose incorporation in the phosphatidylinositol 3-kinase (PI3K)- and Akt-dependent, but in the IR/IRS1-independent manner. (c) 2006 Elsevier Inc. All rights reserved.
引用
收藏
页码:1027 / 1033
页数:7
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