title: Changes in liver-specific compared to common gene transcription during primary culture of mouse hepatocytes.
abstract: Liver-specific mRNA sequences were examined in primary cultures of mouse hepatocytes. After cell disaggregation by collagenase treatment and for at least 24 h in culture, little change in liver-specific mRNA concentrations was noted. Gradually over a period of 140 h, liver-specific mRNAs declined. In contrast, transcriptional assays in which liver cell nuclei were used to produce 32P-labeled nuclear RNA showed that liver-specific gene transcription was greatly diminished within 24 h, while polymerase II transcription of "common" genes and transcription of tRNA and rRNA did not decline. Thus, a prompt differential transcriptional effect seems to underlie the gradual loss of tissue specificity of the primary cultures.
mesh_terms: D000546:Amanitins / Q000494:pharmacology; D000818:Animals; D002478:Cells, Cultured; D008099:Liver / Q000378:metabolism*; D051379:Mice; D009928:Organ Specificity; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D013997:Time Factors; D014158:Transcription, Genetic / Q000187:drug effects
chemical_list: D000546:Amanitins; D012333:RNA, Messenger