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  • Title: Protein kinase C and the antiviral effect of human interferon.
    Author: Cernescu C, Constantinescu SN, Baltă F, Popescu LM, Cajal N.
    Journal: Virologie; 1989; 40(3):163-70. PubMed ID: 2480687.
    Abstract:
    Protein kinase C (PKC) inhibitors: Hidaka's compounds H-7 (10 microM) and H-8 (20 microM), palmitoyl-carnitine (10 microM) and phloretin (50 microM), did not modify the antiviral effect of human natural or recombinant interferon alpha and of natural interferon beta. The tumor promoter 12-o-tetradecanoyl-phorbol-13-acetate (TPA) (200 nM), known as activator of PKC induced an antiviral state when tested on human embryo fibroblasts challenged with the vesicular stomatitis virus. The battery of PKC inhibitors used inhibited the antiviral effect induced by TPA. Palmitoyl-carnitine (10 microM) exerted a toxic effect that was reversed by interferon treatment (2,000 IU/ml interferon alpha). These results suggest that PKC, possibly activated by interferon-receptor interaction, is not essential for inducing the antiviral effect of interferon, but, probably, mediates the antiviral effect of TPA.
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