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. 1984 Aug;3(8):1901–1906. doi: 10.1002/j.1460-2075.1984.tb02065.x

Tumor promoter PMA stimulates the synthesis and secretion of mouse pro-urokinase in MSV-transformed 3T3 cells: this is mediated by an increase in urokinase mRNA content.

D Belin, F Godeau, J D Vassalli
PMCID: PMC557615  PMID: 6541126

Abstract

In mouse MSV-3T3 cells the synthesis of the urokinase form of plasminogen activator was increased 10-fold after addition of the tumor promoter phorbol-12-myristate-13-acetate (PMA). PMA also stimulated the secretion of the protein into the culture medium, mostly in the form of enzymatically inactive pro-urokinase. When assayed by injecting RNA into Xenopus laevis oocytes, the concentration of functional urokinase mRNA was found to be 6- to 10-fold higher in the PMA-treated cells; a similar increase in urokinase mRNA content was measured by hybridisation with a mouse urokinase cDNA probe. Thus, the induction of plasminogen activator by PMA in MSV-3T3 cells is accounted for by an increased content of urokinase mRNA.

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Selected References

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