title: Elevation of c-myc transcript level in human liver during surgical resection of hepatocellular carcinoma: possible cause for underestimation of c-myc gene activation in the tumor.
abstract: It has been a matter of controversy as to whether c-myc gene expression is activated in human hepatocellular carcinoma (HCC). We observed that the c-myc mRNA level in HCC was similar to that of the adjacent non-cancerous portion, as determined in freshly obtained specimens after a partial liver resection. However, the c-myc transcript was at a low level in non-cancerous tissue which was biopsied prior to surgery, whereas it was still at a high level in HCC obtained without performing hepatectomy. These results suggest that the high transcript level observed in the non-cancerous tissue from the excised liver relates to liver resection itself, and that the c-myc gene expression is enhanced in the HCC.
authors.affiliation: Department of Surgery, Chiba University School of Medicine, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Hayashi
authors.forename: M
authors.initials: M
authors.lastname: Taira
authors.forename: M
authors.initials: M
authors.lastname: Tatibana
authors.forename: Y
authors.initials: Y
authors.lastname: Tabata
authors.forename: K
authors.initials: K
authors.lastname: Isono
mesh_terms: D015152:Blotting, Northern; D006528:Carcinoma, Hepatocellular / Q000235:genetics* / Q000601:surgery; D005786:Gene Expression Regulation; D006801:Humans; D008103:Liver Cirrhosis / Q000235:genetics; D008113:Liver Neoplasms / Q000235:genetics* / Q000601:surgery; D011518:Proto-Oncogene Proteins / Q000235:genetics*; D016760:Proto-Oncogene Proteins c-fos; D016271:Proto-Oncogene Proteins c-myc; D012333:RNA, Messenger / Q000235:genetics; D012334:RNA, Neoplasm / Q000235:genetics; D015533:Transcriptional Activation
chemical_list: D011518:Proto-Oncogene Proteins; D016760:Proto-Oncogene Proteins c-fos; D016271:Proto-Oncogene Proteins c-myc; D012333:RNA, Messenger; D012334:RNA, Neoplasm