title: Reduction in p53 synthesis during differentiation of Friend-erythroleukemia cells. Correlation with the commitment to terminal cell division.
abstract: The process of cell differentiation in Friend-erythroleukemia cells was accompanied by 80-90% inhibition of p53 synthesis. This decrease was found to be linked to changes in cell-cycle distribution characteristics of the growth arrest program during differentiation rather than to the induction of the globin genes. The shut-off in the expression of p53 always preceded the specific arrest of cells in the G0/G1 phase. Interferon did not modulate down the expression of p53 if added to transformed non-induced Friend-erythroleukemia cells; however, it slightly enhanced the extent of reduction in p53 synthesis if added during cell differentiation, thus suggesting a differential effect of interferon between cells at different stages of differentiation.
mesh_terms: D000818:Animals; D002455:Cell Division / Q000187:drug effects; D002471:Cell Transformation, Neoplastic; D002478:Cells, Cultured; D005622:Friend murine leukemia virus; D007370:Interferon Type I / Q000494:pharmacology; D004915:Leukemia, Erythroblastic, Acute / Q000378:metabolism*; D007942:Leukemia, Experimental / Q000378:metabolism*; D051379:Mice; D010750:Phosphoproteins / Q000096:biosynthesis*; D016159:Tumor Suppressor Protein p53
chemical_list: D007370:Interferon Type I; D010750:Phosphoproteins; D016159:Tumor Suppressor Protein p53