Summary
To learn whether the reduction of cell-to-cell communication in transformation is a possible primary effect of pp60src phosphorylation or secondary to a cytoskeletal alteration, we examined the junctional permeability in transformed cells with normal cytoskeleton. The permeability to fluorescentlabelled mono- and diglutamate was compared in clones of Faras' vole cells—clones transformed by Rous sarcoma virus and reverted from that transformation. One revertant clone (partial revertant), had the high levels of pp60src kinase activity and tumorigenicity of the fully transformed parent clone, but had lost the cytoskeletal alterations of that clone. Another revertant clone (full revertant) had lost the tumorigenicity and most of the pp60src kinase activity, in addition (J.F. Nawrocki et al., 1984,Mol. Cell Biol. 4:212). The junctional permeability of thepartial revertant with normal cytoskeleton was similar to that of the fully transformed parent clone with abnormal cytoskeleton. The permeabilities of both were lower than those of thefull revertant and the normal uninfected cell, demonstrating that the junctional change by thesrc gene is independent of the cytoskeletal one.
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Azarnia, R., Loewenstein, W.R. Intercellular communication and the control of growth: XI. Alteration of junctional permeability by thesrc gene in a revertant cell with normal cytoskeleton. J. Membrain Biol. 82, 207–212 (1984). https://doi.org/10.1007/BF01871630
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DOI: https://doi.org/10.1007/BF01871630