title: [Podophyllic acid piperidyl hydrazone nitroxide radical and etoposide on nucleic acids and protein metabolism of leukemia L7712 cells in vitro].
abstract: Podophyllic acid piperidyl hydrazone nitroxide radical (GP-1) and etoposide (VP-16), derivatives of podophyllotoxin, inhibited DNA, RNA, protein and ATP synthesis of leukemia L7712 cells at a concentration of 5 micrograms/ml. Inhibitory extents were dependent on the exposure time from 3 to 24 h. The inhibitory rates of both drugs were about 15-66%. ID50 of GP-1 and VP-16 on the synthesis of L7712 cells at 24 h were 0.16 and 0.38 micrograms/ml, respectively. The dose-response curve of GP-1 was a parabolic one, while that of VP-16 was a straight line. The inhibition of GP-1 or VP-16 on DNA synthesis existed also after cells washing. It is suggested that the antitumor effects of GP-1 and VP-16 seem to be related to the damage of DNA template.
authors.forename: J Z
authors.initials: JZ
authors.lastname: Wang
authors.forename: X J
authors.initials: XJ
authors.lastname: Mao
authors.forename: P Y
authors.initials: PY
authors.lastname: Zhang
authors.forename: Z D
authors.initials: ZD
authors.lastname: Liang
authors.forename: X A
authors.initials: XA
authors.lastname: Tian
mesh_terms: D000255:Adenosine Triphosphate / Q000096:biosynthesis; D000818:Animals; D004273:DNA, Neoplasm / Q000096:biosynthesis / Q000187:drug effects; D005047:Etoposide / Q000494:pharmacology*; D007942:Leukemia, Experimental / Q000378:metabolism*; D051379:Mice; D009363:Neoplasm Proteins / Q000096:biosynthesis* / Q000187:drug effects; D011034:Podophyllotoxin / Q000031:analogs & derivatives* / Q000494:pharmacology; D012334:RNA, Neoplasm / Q000096:biosynthesis / Q000187:drug effects; D014407:Tumor Cells, Cultured
chemical_list: D004273:DNA, Neoplasm; D009363:Neoplasm Proteins; D012334:RNA, Neoplasm; C062702:podophyllic acid piperidyl hydrazone nitroxide radical; D005047:Etoposide; D000255:Adenosine Triphosphate; D011034:Podophyllotoxin