期刊
CELL BIOCHEMISTRY AND FUNCTION
卷 20, 期 3, 页码 227-232出版社
WILEY
DOI: 10.1002/cbf.951
关键词
1,25-dihydroxyvitamin D-3; human insulin receptor gene; transcriptional induction; glucose oxidation; wortmannin effect
Treatment with 10(-8) m 1,25-dihydroxyvitamin D-3 for 24 h causes transcriptional activation of the human insulin receptor gene in U-937 human promonocytic cells. The activation seems to potentiate the response to insulin in terms of glucose oxidation. Wortmannin, a phosphatidylinositol 3-kinase inhibitor, causes a greater inhibition of insulin-stimulated glucose oxidation in 1,25-dihydroxyvitamin D-3-treated cells than in untreated cells. This suggests a stimulation of phosphatidylinositol 3-kinase activity by 1,25-dihydroxyvitamin D-3, which could mediate, at least in part, the potentiation of the insulin response. Copyright (C) 2002 John Wiley Sons, Ltd.
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