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  • Title: Cyclic AMP induces the synthesis of developmentally regulated plasma membrane proteins in Dictyostelium.
    Author: Parish RW.
    Journal: Biochim Biophys Acta; 1979 May 03; 553(1):179-82. PubMed ID: 222314.
    Abstract:
    Dictyostelium discoideum slugs (pseudoplasmodia) were disaggregated and the resynthesis of developmentally regulated plasma membrane proteins examined. The synthesis of the majority of these proteins was inhibited when cells were overlaid with Cellophane and maintained as a monolayer. However, cell contact and movement did occur under the Cellophane. The inhibition of differentiation may result from the inability of the cells to organize specifically into multicellular aggregates. The addition of cyclic AMP (1--5 mM) induced the synthesis of certain developmentally regulated plasma membrane proteins in cells overlaid with Cellophane. Hence, this confirms other work showing that cyclic AMP is required for at least some post-aggregative gene expression. Specific cell organisation and interactions are apparently required for an increase in or maintenance of intracellular cyclic AMP levels.
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