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  • Title: Inhibition of phytohemagglutinin-stimulated bovine mononuclear cell proliferation, interleukin-2 production and protein kinase C activity by a protein kinase C inhibitor, H-7.
    Author: Atluru D, Polam S, Sarraju L, Blecha F, Minocha HC, Atluru S.
    Journal: Vet Immunol Immunopathol; 1990 May; 25(1):73-82. PubMed ID: 2349784.
    Abstract:
    1-(5-Isoquinolinesulfonyl)-2-methylpiperazine dihydrochloride (H-7), a potent and selective inhibitor of protein kinase C (PKC), inhibited PHA-stimulated bovine peripheral blood mononuclear cell (PBMC) proliferation, interleukin-2 (IL-2) production, and cytosolic PKC activity without affecting the cell viabilities. Presence of exogenous cytokines, such as purified human IL-2 or recombinant bovine IL-2 (rbovIL-2), reversed the H-7 inhibitory effects on PHA-stimulated PBMC proliferation. We conclude that the PKC enzyme plays an important role as a second messenger in bovine PBMC proliferation in the early stages of cell activation.
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