Differential down-regulation of insulin-sensitive protein kinase-C isoforms by 12-O-tetradecanoylphorbol-13-acetate in rat adipocytes and BC3H-1 myocytes.

Abstract

In rat adipocytes, chronic incubation with 12-O-tetradecanoylphorbol-13-acetate (TPA) reduced immunoreactive protein kinase-C (PKC) beta, gamma, delta, and zeta isoforms by 40-60% and PKC alpha by 75%, but had little effect on PKC epsilon levels. In BC3H-1 myocytes, chronic TPA treatment had no effect on PKC beta, increased PKC zeta, and depleted PKC alpha… (More)

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