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  • Title: [Induction of alkaline phosphatase by retinoic acid].
    Author: Freimüller-Kreutzer B, Nasheuer HP, Müller WH.
    Journal: Biol Chem Hoppe Seyler; 1985 Mar; 366(3):317-21. PubMed ID: 4005046.
    Abstract:
    Treatment of mammalian cells in culture with retinoic acid causes a time- and concentration-dependent increase of the specific activity of alkaline phosphatase. The increase reaches a factor of 15 and more and begins at a concentration of 10(-8)M retinoic acid. The induction is inhibited by cycloheximide or actinomycin D. The same isoenzyme of alkaline phosphatase is expressed in control and in retinoic acid-treated cells as demonstrated by the inhibitions by amino acids and peptides. The enzyme induction occurs in rat heart, skeletal muscle, brain, lung cells and HeLa cells. No induction was found in two lines of human melanoma cells. After treatment of cells with tunicamycin, the induction of alkaline phosphatase is detectable only in the homogenate and no longer detectable by histochemical methods. This shows that the glycosylation of the protein is an important step in the insertion of this enzyme into the plasma membrane.
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