title: Histone expressions in mouse-rat somatic reconstituted cells.
abstract: A critical analysis of histone expression was performed on the four interspecific and the two intraspecific reconstituted cells formed between karyoplast from mouse B16 cells and the cytoplast from rat cells (L6TG.CAPr) or mouse cells (B82.CAPr). All the reconstituted cells had the same pattern of mouse histones and the same amount of mouse-specific H2B. 2 histone as that of mouse nuclear donor cells. A hybrid between B16 and L6TG.CAPr contained both mouse and rat-specific H1b subtypes, whereas no rat-specific H1b was detected in the interspecific reconstituted cells. In both intra- and interspecific reconstituted cells, the proportion of H1b content was lower than that of B16 cells but that of H1 degree was higher, indicating that the mouse H1 patterns from these cells slightly resembled the pattern of slower growing and differentiated cytoplast donor cells. As an effect of the tumor promoter, the H1 pattern tended to revert to that of the nuclear donor cells in agreement with the phenotypic reversion, without any significant change in cell growth.
mesh_terms: D000818:Animals; D002455:Cell Division / Q000187:drug effects; D002460:Cell Line; D002467:Cell Nucleus / Q000502:physiology*; D002843:Chromatin / Q000502:physiology; D003593:Cytoplasm / Q000502:physiology*; D006657:Histones / Q000032:analysis / Q000096:biosynthesis*; D006822:Hybrid Cells / Q000378:metabolism*; D051379:Mice; D010641:Phenotype; D051381:Rats; D013045:Species Specificity; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology
chemical_list: D002843:Chromatin; D006657:Histones; D013755:Tetradecanoylphorbol Acetate