Positive interaction between insulin and phorbol esters on the regulation of a specific messenger ribonucleic acid in rat hepatoma cells

Academic Article


  • With Northern blot analysis, we demonstrate that phorbol 12-myristate 13-acetate (PMA) stimulated P-33 messenger RNA (mRNA)-accumulation in rat hepatoma cells in a time- and concentration-dependent manner similar to insulin and plant lectins. No effect of PMA on P-33 mRNA half-life was detected when mRNA synthesis was inhibited with either actinomycin D or 5.6-dichloro-l-β-D-ribofuranosyl benzimidazole. The effects of insulin and PMA were additive at submaximal concentrations and no additivity was observed under these conditions at maximal concentrations. Thus PMA has a marked insulin-like effect on the accumulation of P-33 mRNA in rat hepatoma cells. © 1987 by The Endocrine Society.
  • Published In

  • Endocrinology  Journal
  • Digital Object Identifier (doi)

    Author List

  • Messina JL; Hamlin J; Larner J
  • Start Page

  • 1227
  • End Page

  • 1232
  • Volume

  • 121
  • Issue

  • 4