title: Effects of prototypical drug-metabolizing enzyme inducers on mRNA expression of housekeeping genes in primary cultures of human and rat hepatocytes.
abstract: Quantitative real-time RT-PCR was used to investigate the effects of prototypical drug-metabolizing enzyme inducers rifampicin (Rif), dexamethasone (Dex), and omeprazole (Ome) on mRNA expression levels of the housekeeping genes beta-actin (ACTB), glyceraldehyde-3-phosphate dehydrogenase (GAPDH), beta-glucuronidase (GUSB), hypoxanthine phosphoribosyltransferase 1 (HPRT1), peptidylprolylisomerase A (PPIA), TATA box binding protein (TBP), and transferrin receptor (TFRC) in primary cultures of cryopreserved human and rat hepatocytes. The mRNA levels of ACTB, GAPDH, GUSB, PPIA, TBP, and TFRC relative to HPRT1 in human hepatocytes were constant at all concentrations of inducers. However, the mRNA level of GAPDH relative to HPRT1 in rat hepatocytes was markedly increased by Rif. The mRNA levels of GAPDH, GUSB, PPIA, TBP, and TFRC relative to HPRT1 in rat hepatocytes were significantly increased by Dex. ACTB and HPRT1 are suitable internal controls for evaluating mRNA expression levels in primary cultures of human and rat hepatocytes after Rif, Dex, or Ome exposure.
authors.affiliation: Department of Drug Metabolism, Division of Pharmacology, Drug Safety and Metabolism, Otsuka Pharmaceutical Factory, Inc., Naruto, Tokushima 772-8601, Japan. nisimums@otsukakj.co.jp
authors.forename: Masuhiro
authors.initials: M
authors.lastname: Nishimura
authors.forename: Akiko
authors.initials: A
authors.lastname: Koeda
authors.forename: Emako
authors.initials: E
authors.lastname: Suzuki
authors.forename: Takefumi
authors.initials: T
authors.lastname: Shimizu
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Kawano
authors.forename: Mitsuo
authors.initials: M
authors.lastname: Nakayama
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Satoh
authors.forename: Shizuo
authors.initials: S
authors.lastname: Narimatsu
authors.forename: Shinsaku
authors.initials: S
authors.lastname: Naito
mesh_terms: D000328:Adult; D000368:Aged; D000818:Animals; D002478:Cells, Cultured; D002675:Child, Preschool; D003907:Dexamethasone / Q000494:pharmacology*; D005260:Female; D005786:Gene Expression Regulation / Q000187:drug effects*; D005796:Genes / Q000235:genetics; D022781:Hepatocytes / Q000187:drug effects* / Q000201:enzymology* / Q000378:metabolism; D006801:Humans; D008658:Inactivation, Metabolic; D009853:Omeprazole / Q000494:pharmacology*; D004364:Pharmaceutical Preparations / Q000378:metabolism*; D012333:RNA, Messenger / Q000235:genetics; D051381:Rats; D017207:Rats, Sprague-Dawley; D012293:Rifampin / Q000494:pharmacology*
chemical_list: D004364:Pharmaceutical Preparations; D012333:RNA, Messenger; D003907:Dexamethasone; D009853:Omeprazole; D012293:Rifampin