title: Early effect of interferon on mouse leukemia cells cultivated in a chemostat.
abstract: Mouse interferon preparations inhibited the multiplication of mouse leukemia L 1210 cells cultivated under steady-state conditions in a chemostat. The use of this sensitive and controlled system led to the detection of a rapid inhibition in the incorporation of (3-H)thymidine into cellular acid-precipitable material 2 hr after the addition of interferon, whereas an effect on cell multiplication was not detected until 22 hr later. Interferon exerted only a transitory effect on the incorporation of (3-H)uridine into acid-precipitable material and no effect on the incorporation of 14-C-amino acids into cellular protein. It is suggested that the chemostat offers many advantages for the investigation of those physiologic factors or chemotherapeutic substances that modify cell division.
mesh_terms: D000596:Amino Acids / Q000378:metabolism; D000818:Animals; D002455:Cell Division / Q000187:drug effects*; D002478:Cells, Cultured; D003470:Culture Media; D004273:DNA, Neoplasm / Q000096:biosynthesis; D007372:Interferons / Q000494:pharmacology*; D007700:Kinetics; D007939:Leukemia L1210 / Q000473:pathology*; D008433:Mathematics; D051379:Mice; D009363:Neoplasm Proteins / Q000096:biosynthesis; D012334:RNA, Neoplasm / Q000096:biosynthesis; D013936:Thymidine / Q000378:metabolism; D014529:Uridine / Q000378:metabolism
chemical_list: D000596:Amino Acids; D003470:Culture Media; D004273:DNA, Neoplasm; D009363:Neoplasm Proteins; D012334:RNA, Neoplasm; D007372:Interferons; D013936:Thymidine; D014529:Uridine