Combination of insulinomimetic agents H2O2 and vanadate enhances insulin receptor mediated tyrosine phosphorylation of IRS-1 leading to IRS-1 association with the phosphatidylinositol 3-kinase.

Abstract excerpt

To analyze the mechanism of action of the insulinomimetic agents H2O2, vanadate, and pervanadate (H2O2 and vanadate), CHO cells or CHO cells that overexpress wild-type or mutant insulin receptor and/or the insulin receptor substrate (IRS-1) were used. H2O2 or vanadate treatment alone had little or no effect on tyrosine phosphorylation of cellular proteins; however, pervanadate treatment dramatically enhanced...

Topics

• Animals
• CHO Cells
• Cricetinae
• Hydrogen Peroxide
• Insulin
• Insulin Receptor Substrate Proteins
• Mutation
• Phosphatidylinositol 3-Kinases
• Phosphoproteins
• Phosphorylation
• Phosphotransferases (Alcohol Group Acceptor)