title: cDNA microarray analysis in hepatocyte differentiation in Huh 7 cells.
abstract: The risk of xenozoonosis infections poses the greatest obstacle against the clinical application of a hybrid artificial liver support system (HALSS). Primary human hepatocytes are an ideal source for HALSS, but the shortage of human livers available for hepatocyte isolation limits this modality. To resolve this issue, we previously demonstrated the upregulation of hepatocyte-specific function by spheroid formation in polyurethane foam and by culturing with the histone deacetylase inhibitor, trichostatin A (TSA), in a human hepatoma cell line (Huh 7). In this article we analyze the gene expression profile using cDNA microarray (1281 genes) in spheroid formation or culturing with TSA in Huh 7 to determine the target genes in hepatocyte differentiation. In both the spheroid formation and in the culture with TSA, the Oct-3/4 transcription factor was upregulated more thantwofold, while the early growth response-1 (EGR-1) transactivator was downregulated less than 0.5-fold. These results indicate that expressions of Oct-3/4 and EGR-1 may be key factors in the induction of hepatocyte differentiation in Huh 7.
authors.affiliation: Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Higashi-ku, Fukuoka 812-8582, Japan. harimoto@surg2.med.kyushu-u.ac.jp
authors.forename: Yo-ichi
authors.initials: Y
authors.lastname: Yamashita
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Shimada
authors.forename: Norifumi
authors.initials: N
authors.lastname: Harimoto
authors.forename: Shinji
authors.initials: S
authors.lastname: Tanaka
authors.forename: Ken
authors.initials: K
authors.lastname: Shirabe
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Ijima
authors.forename: Kohji
authors.initials: K
authors.lastname: Nakazawa
authors.forename: Junji
authors.initials: J
authors.lastname: Fukuda
authors.forename: Kazumori
authors.initials: K
authors.lastname: Funatsu
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Maehara
mesh_terms: D018929:Cell Culture Techniques / Q000379:methods / Q000639:trends; D002454:Cell Differentiation / Q000235:genetics*; D045744:Cell Line, Tumor; D049109:Cell Proliferation; D018076:DNA, Complementary / Q000032:analysis* / Q000235:genetics; D004268:DNA-Binding Proteins / Q000235:genetics; D015536:Down-Regulation / Q000235:genetics; D051766:Early Growth Response Protein 1; D004791:Enzyme Inhibitors / Q000494:pharmacology; D020869:Gene Expression Profiling / Q000379:methods; D005786:Gene Expression Regulation / Q000235:genetics; D022781:Hepatocytes / Q000166:cytology* / Q000502:physiology*; D006801:Humans; D006877:Hydroxamic Acids / Q000494:pharmacology; D017874:Immediate-Early Proteins / Q000235:genetics; D019164:Liver, Artificial / Q000639:trends; D050814:Octamer Transcription Factor-3; D020411:Oligonucleotide Array Sequence Analysis; D020133:Reverse Transcriptase Polymerase Chain Reaction; D018874:Spheroids, Cellular / Q000166:cytology / Q000502:physiology; D014157:Transcription Factors / Q000235:genetics; D015854:Up-Regulation / Q000235:genetics
chemical_list: D018076:DNA, Complementary; D004268:DNA-Binding Proteins; C497325:EGR1 protein, human; D051766:Early Growth Response Protein 1; D004791:Enzyme Inhibitors; D006877:Hydroxamic Acids; D017874:Immediate-Early Proteins; D050814:Octamer Transcription Factor-3; C494173:POU5F1 protein, human; D014157:Transcription Factors; C012589:trichostatin A