title: Induction of cellular DNA synthesis in G0-specific ts mutant, tsJT60, following infection with SV40 and adenoviruses.
abstract: tsJT60 cells, a temperature-sensitive G0 mutant of a Fischer rat cell line, grew normally in an exponential growth phase at both permissive (34 degrees C) and nonpermissive (39.5 degrees C) temperatures, but when stimulated with fetal bovine serum in the growth-arrested state (G0 phase) they entered S phase at 34 degrees C but not at 39.5 degrees C. Infection of G0-arrested tsJT60 cells with SV40, adenovirus (Ad) 5 wild type and its E1B mutant dl313, and Ad12 wild type and its E1B mutants in205B, in205C, dl205, and in206B induced DNA synthesis at both temperatures. The DNA synthesized after virus infection was shown to be cellular by Hirt separation of DNA from SV40-infected cells and by CsCl equilibrium density gradient centrifugation of DNA from Ad5-infected cells.
mesh_terms: D000260:Adenoviruses, Human / Q000502:physiology*; D000818:Animals; D002460:Cell Line; D004247:DNA / Q000096:biosynthesis*; D006358:Hot Temperature; D007399:Interphase; D009154:Mutation; D051381:Rats; D013539:Simian virus 40 / Q000502:physiology*
chemical_list: D004247:DNA