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  • Title: Staurosporine, a potent protein kinase C inhibitor, fails to inhibit 12-O-tetradecanoylphorbol-13-acetate-caused ornithine decarboxylase induction in isolated mouse epidermal cells.
    Author: Kiyoto I, Yamamoto S, Aizu E, Kato R.
    Journal: Biochem Biophys Res Commun; 1987 Oct 29; 148(2):740-6. PubMed ID: 3689369.
    Abstract:
    Staurosporine, a most potent protein kinase C inhibitor, actually inhibited protein kinase C activity obtained either from cytosol or particulate fraction of mouse epidermis. Staurosporine at the concentrations which exert protein kinase C inhibition, however, failed to inhibit, but markedly augmented 12-O-tetradecanoylphorbol-13-acetate (TPA)-caused ornithine decarboxylase (ODC) induction in isolated mouse epidermal cells. Staurosporine by itself induced ODC activity as TPA does. Mechanism of ODC induction seems different between these two compounds. Another protein kinase C inhibitor, H-7, inhibited both staurosporine- and TPA-caused ODC induction.
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