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  • Title: Stimulation of prostaglandin production in rat thymic epithelial cells by protein kinase C mediated activation of phospholipase A2.
    Author: Liu PS, Sun L, Wen M, Hayashi J.
    Journal: Biochem Int; 1992 Aug; 27(5):931-8. PubMed ID: 1417924.
    Abstract:
    Tumor promoter (phorbol-12-myristate-13-acetate:PMA) stimulates the production of prostaglandin E2 (PGE2) in a dose- and time-dependent manner in cloned rat thymic epithelial cells, TEA3A1. This stimulation of PGE2 production by PMA was blocked by pretreatment of cells with protein kinase C (PKC) inhibitor staurosporin and was abolished in PKC down modulated cells. PMA treatment significantly stimulated the release of arachidonic acid from the cells, but had no effect on arachidonic acid incorporation and on cyclooxygenase enzymatic activity of the cells. These results indicate that PMA stimulates PGE2 production through PKC mediated activation of phospholipase A2 (PLA2) in thymic epithelial cells.
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