title: Bleomycin: effect on satellite DNA in mouse fibroblasts.
abstract: The effect of Bleomycin on the semiconservative replication of mouse nuclear DNA has been studied. When asynchronously dividing mouse fibroblasts (L-cells) were grown in the presence of 5-bromodeoxyuridine (25 mg/l medium) for 18 h, three hybrid DNA bands with densities of 1.722, 1.752, and 1.761 kg/l appeared after caesium chloride density gradient centrifugation of nuclear DNA. In cells exposed to Bleomycin (100 mg/l) however, replication of satellite DNA is more strongly inhibited than is the replication of the main band DNA; preferentially the thymidinerich hybrid duplex at 1.761 kg/l could no longer be detected.
mesh_terms: D000818:Animals; D001761:Bleomycin / Q000494:pharmacology*; D002478:Cells, Cultured; D004261:DNA Replication / Q000187:drug effects*; D004276:DNA, Satellite; D005347:Fibroblasts; D051379:Mice; D009695:Nucleic Acid Renaturation
chemical_list: D004276:DNA, Satellite; D001761:Bleomycin