Abstract:
:The c-myc oncogene is implicated in normal growth and differentiation processes. Human cell lines IM9 and HepG2 stably cultured at "low" glucose concentrations (5.5 mM) show c-myc mRNA levels 3-4 times higher than cells cultured at "high" glucose concentrations (25 nM). D-fructose (a metabolizable exose) substitutes for D-glucose in reducing c-myc expression while 3-ortho-methylglucose (a non metabolizable exose) is uneffective. c-myc expression is up-regulated (by PMA) or down-regulated (by dexamethasone and long-term exposure to FCS) in human cells cultured at "low" glucose but not in cells cultured at "high" glucose. We previously demonstrated that insulin receptor gene expression in human cell lines in enhanced by glucose. Therefore, glucose controls in an opposite way the expression of two genes important in the regulation of eukaryotic cell growth and differentiation.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Briata P,Laurino C,Gherzi Rdoi
10.1016/0006-291x(89)92719-8subject
Has Abstractpub_date
1989-12-29 00:00:00pages
1123-9issue
3eissn
0006-291Xissn
1090-2104pii
0006-291X(89)92719-8journal_volume
165pub_type
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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journal_title:Biochemical and biophysical research communications
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