Premium
Staurosporine induces a neuronal phenotype in SH‐SY5Y human neuroblastoma cells that resembles that induced by the phorbol ester 12‐ O ‐tetradecanoyl phorbol‐13 acetate TPA)
Author(s) -
Jalava Annika,
Heikkilä Jari,
Lintunen Minnamaija,
Åkerman Karl,
Pahlman Sven
Publication year - 1992
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(92)80176-h
Subject(s) - phorbol ester , staurosporine , phorbol , sh sy5y , chemistry , protein kinase c , tetradecanoylphorbol acetate , microbiology and biotechnology , neuroblastoma , biochemistry , cell culture , signal transduction , biology , genetics
Treatment of SH‐SY5Y human neuroblastoma cells with the protein kinase inhibitor staurosporine, induced both morphological and functional differentiation in these cells. The effects of staurosporine were comparable to those induced by the protein kinase C (PKC) activator. 12‐ O tetradecanoyl phorbol 13‐acetate (TPA), with respect to induction of neuronal differentiation, i.e. neurite outgrowth, inhibition of DNA synthesis, induction and down‐regulation of c‐myc protein expression, induction of mRNA for both neuropeptide Y (NPY) and growth associated protein 43 (GAP‐43) and stimulation of tyrosine hydroxylase expression. Staurosporine failed to translocate PKC to the membrane fraction or to stimulate phosphorylation of the endogenous PKC substrate M r 80,000 (p8O). Instead, staurosporine inhibited TPA‐induced phosphorylation of p80.