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- W2051211373 abstract "Recently, we identified WISP-2 (Wnt-1 inducible signaling pathway protein 2) as a novel estrogen-inducible gene in the MCF-7 human breast cancer cell line. In this study, we examined whether WISP-2 expression is modulated by PK activators. Treatment with protein kinase A (PKA) activators [cholera toxin plus 3-isobutyl-1-methylxanthine (CT/IBMX)] induced WISP-2 expression. CT/IBMX induced expression of the other estrogen-responsive gene, pS2, more dramatically than maximum stimulation by 17beta-estradiol (E2). Treatment with 12-O-tetradecanoylphorbol-13-acetate (TPA), which directly stimulates protein kinase C (PKC) activity, completely prevented WISP-2 mRNA induction by E2, whereas it increased pS2 mRNA expression more dramatically than maximum stimulation by E2. Results of treatments with the protein synthesis inhibitor cycloheximide and the pure antiestrogen ICI182,780 suggest that these PK pathways modulate WISP-2 gene expression via different molecular mechanisms than those for pS2. Because TPA inhibits cell proliferation, we investigated whether WISP-2 induction was dependent on cell growth. Cells were treated with insulin-like growth factor-1 (IGF-1) or interleukin-1alpha (IL-1alpha) to stimulate or inhibit cell growth, respectively. These treatments had no effect on WISP-2 mRNA expression either alone or in combination with E2, suggesting that WISP-2 induction is independent of cell growth." @default.
- W2051211373 created "2016-06-24" @default.
- W2051211373 creator A5016654061 @default.
- W2051211373 date "2003-09-01" @default.
- W2051211373 modified "2023-09-24" @default.
- W2051211373 title "Estrogen-induced genes, WISP-2 and pS2, respond divergently to protein kinase pathway" @default.
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- W2051211373 doi "https://doi.org/10.1016/j.bbrc.2003.07.001" @default.
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