Abstract
Suitable reference genes for correct quantification of reverse transcription PCR (qRT-PCR) have to be constantly expressed in all samples under investigation. Thus, it is mandatory to determine expression stability of control genes before normalization. We aimed to establish optimum inducing concentrations for the prototypical enzyme and drug transporter inducer rifampicin in LS180 cells and concurrently assessed reference gene stability under rifampicin treatment. LS180 cells were treated with increasing concentrations of rifampicin (up to 200 μM), and expression of eight different reference genes and some target genes (CYP3A4, ABCB1, and ABCC1) was quantified using real-time qRT-PCR. To check whether the results can be generalized, HepG2 cells were also investigated. We demonstrated that higher concentrations of rifampicin (>50 μM) change the expression of reference genes and thus may complicate and adulterate normalization of qRT-PCR data. The results stress the need for proper validation of potential reference genes in respective cells, tissues, and particular experimental conditions. Programs like geNorm and NormFinder alone do not warrant an adequate choice of the most suitable reference gene. Scrutiny of the reference gene expression and plausibility of the data remain necessary and protect from erroneous quantification and misinterpretation of qRT-PCR data.
Similar content being viewed by others
References
Albermann N, Schmitz-Winnenthal FH, Z’graggen K, Volk C, Hoffmann MM, Haefeli W, Weiss J (2005) Expression of the drug transporters MDR1/ABCB1, MRP1/ABCC1, MRP2/ABCC2, BCRP/ABCG2, and PXR in peripheral blood mononuclear cells and their relationship with the expression in intestine and liver. Biochem Pharmacol 70:949–958
Andersen CL, Jensen JL, Ørntoft TF (2004) Normalization of real-time quantitative reverse transcription-PCR data: a model-based variance estimation approach to identify genes suited for normalization, applied to bladder and colon cancer data sets. Cancer Res 64:5245–5250
Ayed-Boussema I, Pascussi JM, Maurel P, Bacha H, Hassen W (2011) Effect of aflatoxin B1 on nuclear receptors PXR, CAR, and AhR and their target cytochromes P450 mRNA expression in primary cultures of human hepatocytes. Int J Toxicol 31:86–93
Buss WC, Morgan R, Guttmann J, Barela T, Stalter K (1978) Rifampicin inhibition of protein synthesis in mammalian cells. Science 200:432–434
Bustin SA (2000) Absolute quantification of mRNA using real-time reverse transcription polymerase chain reaction assays. J Mol Endocrinol 25:169–193
Cerveny L, Svecova L, Anzenbacherova E, Vrzal R, Staud F, Dvorak Z, Ulrichova J, Anzenbacher P, Pavek P (2007) Valproic acid induces CYP3A4 and MDR1 gene expression by activation of constitutive androstane receptor and pregnane X receptor pathways. Drug Metab Dispos 35:1032–1041
Gutmann H, Fricker G, Török M, Michael S, Beglinger C, Drewe J (1999) Evidence for different ABC-transporters in Caco-2 cells modulating drug uptake. Pharm Res 16:402–407
Harmsen S, Koster AS, Beijnen JH, Schellens JH, Meijerman I (2008) Comparison of two immortalized human cell lines to study nuclear receptor-mediated CYP3A4 induction. Drug Metab Dispos 36:1166–1171
Hartmann GR, Heinrich P, Kollenda MC, Skrobranek B, Tropschug M, Weiß W (1985) Molecular mechanism of action of the antibiotic rifampicin. Angew Chem Int Ed Engl 24:1009–1014
Kirby BJ, Collier AC, Kharasch ED, Dixit V, Desai P, Whittington D, Thummel KE, Unadkat JD (2011) Complex drug interactions of HIV protease inhibitors 2: in vivo induction and in vitro to in vivo correlation of induction of cytochrome P450 1A2, 2B6, and 2C9 by ritonavir or nelfinavir. Drug MetabDispos 39:2329–2337
König SK, Herzog M, Theile D, Zembruski N, Haefeli WE, Weiss J (2010) Impact of drug transporters on cellular resistance towards saquinavir and darunavir. J Antimicrob Chemother 65:2319–2328
Lundby C, Nordsborg N, Kusuhara K, Kristensen KM, Neufer PD, Pilegaard H (2005) Gene expression in human skeletal muscle: alternative normalization method and effect of repeated biopsies. Eur J Appl Physiol 95:351–360
Martin P, Riley R, Back DJ, Owen A (2008) Comparison of the induction profile for drug disposition proteins by typical nuclear receptor activators in human hepatic and intestinal cells. Br J Pharmacol 153:805–819
Medoff G, Kwan CN, Schlessinger D, Kobayashi GS (1973) Potentiation of rifampicin, rifampicin analogs, and tetracycline against animal cells by amphotericin B and polymyxin B. Cancer Res 33:1146–1149
Nibourg GA, Huisman HT, van der Hoeven TV, van Gulik TM, Chamuleau RA, Hoekstra R (2010) Stable overexpression of pregnane X receptor in HepG2 cells increases its potential for bioartificial liver application. Liver Transpl 16:1075–1085
Niemi M, Backman JT, Fromm MF, Neuvonen PJ, Kivistö KT (2003) Pharmacokinetic interactions with rifampicin: clinical relevance. Clin Pharmacokinet 42:819–850
Nishimura M, Koeda A, Suzuki E, Shimizu T, Kawano Y, Nakayama M, Satoh T, Narimatsu S, Naito S (2006a) Effects of prototypical drug-metabolizing enzyme inducers on mRNA expression of housekeeping genes in primary cultures of human and rat hepatocytes. Biochem Biophys Res Commun 346:1033–1039
Nishimura M, Koeda A, Suzuki E, Kawano Y, Nakayama M, Satoh T, Narimatsu S, Naito S (2006b) Regulation of mRNA expression of MDR1, MRP1, MRP2 and MRP3 by prototypical microsomal enzyme inducers in primary cultures of human and rat hepatocytes. Drug Metab Pharmacokinet 21:297–307
Peters T, Lindenmaier H, Haefeli WE, Weiss J (2006) Interaction of the mitotic kinesin Eg5 inhibitor monastrol with P-glycoprotein. Naunyn Schmiedebergs Arch Pharmacol 372:291–299
Pogo BG (1972) Specific inhibition by rifampicin of transcription in human lymphocytes stimulated by phytohemagglutinin. J Cell Biol 55:515–519
Radonić A, Thulke S, Mackay IM, Landt O, Siegert W, Nitsche A (2004) Guideline to reference gene selection for quantitative real-time PCR. Biochem Biophys Res Commun 313:856–862
Rae JM, Johnson MD, Lippman ME, Flockhart DA (2001) Rifampin is a selective, pleiotropic inducer of drug metabolism genes in human hepatocytes: studies with cDNA and oligonucleotide expression arrays. J Pharmacol Exp Ther 299:849–857
Rhinn H, Scherman D, Escriou V (2008) One-step quantification of single-stranded DNA in the presence of RNA using Oligreen in a real-time polymerase chain reaction thermocycler. Anal Biochem 372:116–118
Schaefer O, Ohtsuki S, Kawakami H, Inoue T, Liehner S, Saito A, Sakamoto A, Ishiguro N, Matsumaru T, Terasaki T, Ebner T (2012) Absolute quantification and differential expression of drug transporters, cytochrome P450 enzymes, and UDP-glucuronosyltransferases in cultured primary human hepatocytes. Drug Metab Dispos 40:93–103
Schmittgen TD, Zakrajsek BA (2000) Effect of experimental treatment on housekeeping gene expression: validation by real-time, quantitative RT-PCR. J Biochem Biophys Methods 46:69–81
Suzuki T, Higgins PJ, Crawford DR (2000) Control selection for RNA quantitation. Biotechniques 29:332–337
Templeton IE, Houston JB, Galetin A (2011) Predictive utility of in vitro rifampin induction data generated in fresh and cryopreserved human hepatocytes, Fa2N-4, and HepaRG cells. Drug Metab Dispos 39:1921–1929
Thellin O, Zorzi W, Lakaye B, De Borman B, Coumans B, Hennen G, Grisar T, Igout A, Heinen E (1999) Housekeeping genes as internal standards: use and limits. J Biotechnol 75:291–295
Vandesompele J, De Preter K, Pattyn F, Poppe B, Van Roy N, De Paepe A, Speleman F, (2002) Accurate normalization of real-time quantitative RT-PCR data by geometric averaging of multiple internal control genes. Genome Biol 3:RESEARCH0034
Weiss J, Herzog M, König S, Storch CH, Ketabi-Kiyanvash N, Haefeli WE (2009) Induction of multiple drug transporters by efavirenz. J Pharmacol Sci 109:242–250
Weiss J, Herzog M, Haefeli WE (2011) Differential modulation of the expression of important drug metabolising enzymes and transporters by endothelin-1 receptor antagonists ambrisentan and bosentan in vitro. Eur J Pharmacol 660:298–304
Xu C, Li CY, Kong AN (2005) Induction of phase I, II and III drug metabolism/transport by xenobiotics. Arch Pharm Res 28:249–268
Yasuda K, Ranade A, Venkataramanan R, Strom S, Chupka J, Ekins S, Schuetz E, Bachmann K (2008) A comprehensive in vitro and in silico analysis of antibiotics that activate pregnane X receptor and induce CYP3A4 in liver and intestine. Drug Metab Dispos 36:1689–1697
Zisowsky J, Koegel S, Leyers S, Devarakonda K, Kassack MU, Osmak M, Jaehde U (2007) Relevance of drug uptake and efflux for cisplatin sensitivity of tumor cells. Biochem Pharmacol 73:298–307
Acknowledgments
The authors thank Eli Lilly Company (Bad Homburg, Germany) for LY335979. Moreover, they thank Corina Mueller, Stephanie Rosenzweig, and Dominik Menger for excellent technical assistance and Amir Abdollahi, Christian Schwager, and Christiane Rutenberg for the access to and the help with the luminometer.
Author information
Authors and Affiliations
Corresponding author
Electronic supplementary material
Below is the link to the electronic supplementary material.
ESM 1
(JPEG 59 kb)
Rights and permissions
About this article
Cite this article
Weiss, J., Theile, D. & Haefeli, W.E. Rifampicin alters the expression of reference genes used to normalize real-time quantitative RT-PCR data. Naunyn-Schmiedeberg's Arch Pharmacol 385, 1025–1034 (2012). https://doi.org/10.1007/s00210-012-0782-7
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00210-012-0782-7