Involvement of Phosphoinositol-glycan in Induction of Differentiation, from Preadipocytes to Adipocytes, of 3T3-L1 Cells by Insulin-like Growth Factor I(Biological Chemistry)
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概要
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Using a serum-free culture system, we examined the effects of insulin-like growth factor I (IGF-I) and insulin on the differentiation, from preadipocytes to adipocytes, of 3T3-L1 cells, and the signal transduction mechanism after the stimulation by IGF-I of adipocyte differentiation. IGF-I and insulin stimulated the adipose conversion of 3T3-L1 cells differently. IGF-I strongly stimulated adipose conversion on coupling with dexamethasone and 1-methyl-3-isobutylxanthine, while insulin did not couple with them. The potency of the effect of induction by IGF-I of adipocyte differentiation of 3T3-L1 cells was considerably higher than that of the effect of insulin. Therefore, it was suggested that IGF-I is important in adipose conversion of 3T3-L1 cells. Inositol-monophosphate, a specific inhibitor of the phosphoinositol-glycan (PI-glycan) action, suppressed IGF-I induced adipose conversion. Therefore, we think that PI-glycan released from the plasma membrane may be involved in the IGF-I function in adipocyte differentiation of 3T3-L1 cells as a second messenger.
- 社団法人日本農芸化学会の論文
- 1991-11-23
著者
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SUGIMOTO Etsuro
Laboratory of Food Science and Nutrition, Department of Life Style Studies, School of Human Cultures
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Kamei Yasutomi
Laboratory Of Nutritional Chemistry Department Of Food Science And Technology Faculty Of Agriculture
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Sugimoto Etsuro
Laboratory Of Nutritional Chemistry Department Of Food Science And Technology Faculty Of Agriculture
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Kawai Reiko
Laboratory Of Nutritional Chemistry Department Of Food Science And Technology Faculty Of Agriculture
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Kawada Teruo
Laboratory Of Nutritional Chemistry Department Of Food Science And Technology Faculty Of Agriculture
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Kawada Teruo
Laboratory For Molecular Function Of Food Division Of Food Science And Biotechnology Graduate School
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MINAMOTO Yoshiki
Central Research Laboratories of Ajinomoto Co., Inc.
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Minamoto Yoshiki
Central Research Laboratories Of Ajinomoto Co. Inc.
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