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  • Title: Differential effects of the tumor promoter phorbol-12-myristate-13-acetate on the morphological and biochemical differentiation of N-18 mouse neuroblastoma cells.
    Author: Liu AY, Chen KY.
    Journal: J Cell Physiol; 1985 Dec; 125(3):387-92. PubMed ID: 2999162.
    Abstract:
    The phorbol ester tumor promoter phorbol-12-myristate-13-acetate (PMA) was found to have differential inhibitory effects on the expression of morphological and biochemical differentiation of N-18 mouse neuroblastoma cells. PMA completely inhibited neurite extension and associated growth characteristics and partially inhibited the increased expression of R1 cAMP-binding protein; PMA had no effect on the induction of acetylcholinesterase activity in cells prompted to differentiate either by treatment with 1 mM dibutyryl cAMP or by serum deprivation. 4-alpha-Phorbol-12, 13-didecanoate, an inactive analogue of phorbol ester tumor promoter, was without effect. The implications of these findings concerning the mechanism of action of phorbol ester tumor promoters in the control of cell differentiation are discussed.
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