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Dimunová D, Matoušková P, Podlipná R, Boušová I, Skálová L. The role of UDP-glycosyltransferases in xenobiotic-resistance. Drug Metab Rev 2022; 54:282-298. [DOI: 10.1080/03602532.2022.2083632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Diana Dimunová
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Petra Matoušková
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Radka Podlipná
- Laboratory of Plant Biotechnologies, Institute of Experimental Botany, Czech Academy of Sciences, 165 02 Praha 6 - Lysolaje, Czech Republic
| | - Iva Boušová
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Lenka Skálová
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
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Šadibolová M, Juvonen RO, Auriola S, Boušová I. In vitro metabolism of helenalin and its inhibitory effect on human cytochrome P450 activity. Arch Toxicol 2022; 96:793-808. [PMID: 34989853 DOI: 10.1007/s00204-021-03218-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 12/23/2021] [Indexed: 11/30/2022]
Abstract
Sesquiterpene lactone helenalin is used as an antiphlogistic in European and Chinese folk medicine. The pharmacological activities of helenalin have been extensively investigated, yet insufficient information exists about its metabolic properties. The objectives of the present study were (1) to investigate the in vitro NADPH-dependent metabolism of helenalin (5 and 100 µM) using human and rat liver microsomes and liver cytosol, (2) to elucidate the role of human cytochrome P450 (CYP) enzymes in its oxidative metabolism, and (3) to study the inhibition of human CYPs by helenalin. Five oxidative metabolites were detected in NADPH-dependent human and rat liver microsomal incubations, while two reduced metabolites were detected only in NADPH-dependent human microsomal and cytosolic incubations. In human liver microsomes, the main oxidative metabolite was 14-hydroxyhelenalin, and in rat liver microsomes 9-hydroxyhelenalin. The overall oxidation of helenalin was several times more efficient in rat than in human liver microsomes. In humans, CYP3A4 and CYP3A5 followed by CYP2B6 were the main enzymes responsible for the hepatic metabolism of helenalin. The extrahepatic CYP2A13 oxidized helenalin most efficiently among CYP enzymes, possessing the Km value of 0.6 µM. Helenalin inhibited CYP3A4 (IC50 = 18.7 µM) and CYP3A5 (IC50 = 62.6 µM), and acted as a mechanism-based inhibitor of CYP2A13 (IC50 = 1.1 µM, KI = 6.7 µM, and kinact = 0.58 ln(%)/min). It may be concluded that the metabolism of helenalin differs between rats and humans, in the latter its oxidation is catalyzed by hepatic CYP2B6, CYP3A4, CYP3A5, and CYP3A7, and extrahepatic CYP2A13.
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Affiliation(s)
- Michaela Šadibolová
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University, Hradec Králové, Czech Republic
| | - Risto O Juvonen
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Seppo Auriola
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - Iva Boušová
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University, Hradec Králové, Czech Republic.
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Hanousková B, Vávrová G, Ambrož M, Boušová I, Karlsen TA, Skálová L, Matoušková P. MicroRNAs mediated regulation of glutathione peroxidase 7 expression and its changes during adipogenesis. Biochim Biophys Acta Gene Regul Mech 2021; 1864:194734. [PMID: 34339889 DOI: 10.1016/j.bbagrm.2021.194734] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 07/12/2021] [Accepted: 07/22/2021] [Indexed: 12/19/2022]
Abstract
Glutathione peroxidase 7 (GPx7) acts as an intracellular stress sensor/transmitter and plays an important role in adipocyte differentiation and the prevention of obesity related pathologies. For this reason, finding the regulatory mechanisms that control GPx7 expression is of great importance. As microRNAs (miRNAs) could participate in the regulation of GPx7 expression, we studied the inhibition of GPx7 expression by four selected miRNAs with relation to obesity and adipogenesis. The effect of the transfection of selected miRNAs mimics on GPx7 expression was tested in three cell models (HEK293, SW480, AT-MSC). The interaction of selected miRNAs with the 3'UTR of GPx7 was followed up on using a luciferase gene reporter assay. In addition, the levels of GPx7 and selected miRNAs in adipose tissue mesenchymal stem cells (AT-MSC) and mature adipocytes from four human donors were compared, with the changes in these levels during adipogenesis analyzed. Our results show for the first time that miR-137 and miR-29b bind to the 3'UTR region of GPx7 and inhibit the expression of this enzyme at the mRNA and protein level in all the human cells tested. However, no negative correlation between miR-137 nor miR-29b level and GPx7 was observed during adipogenesis. Despite the confirmed inhibition of GPx7 expression by miR-137 and miR-29b, the action of these two molecules in adipogenesis and mature adipocytes must be accompanied by other regulators.
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Affiliation(s)
- Barbora Hanousková
- Faculty of Pharmacy in Hradec Králové, Department of Biochemical Sciences, Charles University, Hradec Králové, Czech Republic; Norwegian Center for Stem Cell Research, Department of Immunology and Transfusion Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Gabriela Vávrová
- Faculty of Pharmacy in Hradec Králové, Department of Biochemical Sciences, Charles University, Hradec Králové, Czech Republic
| | - Martin Ambrož
- Faculty of Pharmacy in Hradec Králové, Department of Biochemical Sciences, Charles University, Hradec Králové, Czech Republic
| | - Iva Boušová
- Faculty of Pharmacy in Hradec Králové, Department of Biochemical Sciences, Charles University, Hradec Králové, Czech Republic
| | - Tommy A Karlsen
- Norwegian Center for Stem Cell Research, Department of Immunology and Transfusion Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | - Lenka Skálová
- Faculty of Pharmacy in Hradec Králové, Department of Biochemical Sciences, Charles University, Hradec Králové, Czech Republic
| | - Petra Matoušková
- Faculty of Pharmacy in Hradec Králové, Department of Biochemical Sciences, Charles University, Hradec Králové, Czech Republic.
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Lněničková K, Šadibolová M, Matoušková P, Szotáková B, Skálová L, Boušová I. The Modulation of Phase II Drug-Metabolizing Enzymes in Proliferating and Differentiated CaCo-2 Cells by Hop-Derived Prenylflavonoids. Nutrients 2020; 12:nu12072138. [PMID: 32708388 PMCID: PMC7400824 DOI: 10.3390/nu12072138] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 07/10/2020] [Accepted: 07/16/2020] [Indexed: 12/14/2022] Open
Abstract
Prenylflavonoids in the human organism exhibit various health-beneficial activities, although they may interfere with drugs via the modulation of the expression and/or activity of drug-metabolizing enzymes. As intestinal cells are exposed to the highest concentrations of prenylflavonoids, we decided to study the cytotoxicity and modulatory effects of the four main hop-derived prenylflavonoids on the activities and mRNA expression of the main drug-conjugating enzymes in human CaCo-2 cells. Proliferating CaCo-2 cells were used for these purposes as a model of colorectal cancer cells, and differentiated CaCo-2 cells were used as an enterocyte-like model. All the tested prenylflavonoids inhibited the CaCo-2 cells proliferation, with xanthohumol proving the most effective (IC50 8.5 µM). The prenylflavonoids modulated the activities and expressions of the studied enzymes to a greater extent in the differentiated, as opposed to the proliferating, CaCo-2 cells. In the differentiated cells, all the prenylflavonoids caused a marked increase in glutathione S-transferase and catechol-O-methyltransferase activities, while the activity of sulfotransferase was significantly inhibited. Moreover, the prenylflavonoids upregulated the mRNA expression of uridine diphosphate (UDP)-glucuronosyl transferase 1A6 and downregulated that of glutathione S-transferase 1A1/2.
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Affiliation(s)
- Kateřina Lněničková
- Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 77515 Olomouc, Czech Republic;
| | - Michaela Šadibolová
- Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, 50005 Hradec Králové, Czech Republic; (M.Š.); (P.M.); (B.S.); (L.S.)
| | - Petra Matoušková
- Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, 50005 Hradec Králové, Czech Republic; (M.Š.); (P.M.); (B.S.); (L.S.)
| | - Barbora Szotáková
- Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, 50005 Hradec Králové, Czech Republic; (M.Š.); (P.M.); (B.S.); (L.S.)
| | - Lenka Skálová
- Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, 50005 Hradec Králové, Czech Republic; (M.Š.); (P.M.); (B.S.); (L.S.)
| | - Iva Boušová
- Faculty of Pharmacy in Hradec Králové, Charles University, Heyrovského 1203, 50005 Hradec Králové, Czech Republic; (M.Š.); (P.M.); (B.S.); (L.S.)
- Correspondence: ; Tel.: +420-495-067-406
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Zárybnický T, Matoušková P, Skálová L, Boušová I. The Hepatotoxicity of Alantolactone and Germacrone: Their Influence on Cholesterol and Lipid Metabolism in Differentiated HepaRG Cells. Nutrients 2020; 12:nu12061720. [PMID: 32521813 PMCID: PMC7353089 DOI: 10.3390/nu12061720] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/01/2020] [Accepted: 06/05/2020] [Indexed: 02/07/2023] Open
Abstract
The sesquiterpenes alantolactone (ATL) and germacrone (GER) are potential anticancer agents of natural origin. Their toxicity and biological activity have been evaluated using the differentiated HepaRG (dHepaRG) cells, a hepatocyte-like model. The half-maximal inhibitory concentrations of cell viability after 24-h treatment of dHepaRG cells are approximately 60 µM for ATL and 250 µM for GER. However, both sesquiterpenes induce reactive oxygen species (ROS) formation in non-toxic concentrations and significantly dysregulate the mRNA expression of several functional markers of mature hepatocytes. They similarly decrease the protein level of signal transducer and activator of transcription 3 (STAT3), nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) and their transcription target, intercellular adhesion molecule 1 (ICAM-1). Based on the results of a BATMAN-TCM analysis, the effects of sesquiterpenes on cholesterol and lipid metabolism were studied. Sesquiterpene-mediated dysregulation of both cholesterol and lipid metabolism was observed, during which these compounds influenced the protein expression of 3-hydroxy-3-methylglutaryl-CoA reductase (HMGCR) and sterol regulatory element-binding protein 2 (SREBP-2), as well as the mRNA expression of HMGCR, CYP19A1, PLIN2, FASN, SCD, ACACB, and GPAM genes. In conclusion, the two sesquiterpenes caused ROS induction at non-toxic concentrations and alterations in cholesterol and lipid metabolism at slightly toxic and toxic concentrations, suggesting a risk of liver damage if administered to humans.
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Zárybnický T, Matoušková P, Ambrož M, Šubrt Z, Skálová L, Boušová I. The Selection and Validation of Reference Genes for mRNA and microRNA Expression Studies in Human Liver Slices Using RT-qPCR. Genes (Basel) 2019; 10:genes10100763. [PMID: 31569378 PMCID: PMC6826422 DOI: 10.3390/genes10100763] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 09/25/2019] [Accepted: 09/27/2019] [Indexed: 01/06/2023] Open
Abstract
The selection of a suitable combination of reference genes (RGs) for data normalization is a crucial step for obtaining reliable and reproducible results from transcriptional response analysis using a reverse transcription-quantitative polymerase chain reaction. This is especially so if a three-dimensional multicellular model prepared from liver tissues originating from biologically diverse human individuals is used. The mRNA and miRNA RGs stability were studied in thirty-five human liver tissue samples and twelve precision-cut human liver slices (PCLS) treated for 24 h with dimethyl sulfoxide (controls) and PCLS treated with β-naphthoflavone (10 µM) or rifampicin (10 µM) as cytochrome P450 (CYP) inducers. Validation of RGs was performed by an expression analysis of CYP3A4 and CYP1A2 on rifampicin and β-naphthoflavone induction, respectively. Regarding mRNA, the best combination of RGs for the controls was YWHAZ and B2M, while YWHAZ and ACTB were selected for the liver samples and treated PCLS. Stability of all candidate miRNA RGs was comparable or better than that of generally used short non-coding RNA U6. The best combination for the control PCLS was miR-16-5p and miR-152-3p, in contrast to the miR-16-5b and miR-23b-3p selected for the treated PCLS. Our results showed that the candidate RGs were rather stable, especially for miRNA in human PCLS.
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Affiliation(s)
- Tomáš Zárybnický
- Department of Biochemical Sciences, Charles University, Faculty of Pharmacy in Hradec Králové, 500 05 Hradec Králové, Czech Republic.
| | - Petra Matoušková
- Department of Biochemical Sciences, Charles University, Faculty of Pharmacy in Hradec Králové, 500 05 Hradec Králové, Czech Republic.
| | - Martin Ambrož
- Department of Biochemical Sciences, Charles University, Faculty of Pharmacy in Hradec Králové, 500 05 Hradec Králové, Czech Republic.
| | - Zdeněk Šubrt
- Department of General Surgery, Third Faculty of Medicine and University Hospital Královské Vinohrady, Charles University, 100 34 Prague, Czech Republic.
- Department of Surgery, University Hospital Hradec Králové, 500 05 Hradec Králové, Czech Republic.
| | - Lenka Skálová
- Department of Biochemical Sciences, Charles University, Faculty of Pharmacy in Hradec Králové, 500 05 Hradec Králové, Czech Republic.
| | - Iva Boušová
- Department of Biochemical Sciences, Charles University, Faculty of Pharmacy in Hradec Králové, 500 05 Hradec Králové, Czech Republic.
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Šadibolová M, Zárybnický T, Smutný T, Pávek P, Šubrt Z, Matoušková P, Skálová L, Boušová I. Sesquiterpenes Are Agonists of the Pregnane X Receptor but Do Not Induce the Expression of Phase I Drug-Metabolizing Enzymes in the Human Liver. Int J Mol Sci 2019; 20:ijms20184562. [PMID: 31540101 PMCID: PMC6769599 DOI: 10.3390/ijms20184562] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/11/2019] [Accepted: 09/12/2019] [Indexed: 02/07/2023] Open
Abstract
Sesquiterpenes, the main components of plant essential oils, are bioactive compounds with numerous health-beneficial activities. Sesquiterpenes can interact with concomitantly administered drugs due to the modulation of drug-metabolizing enzymes (DMEs). The aim of this study was to evaluate the modulatory effects of six sesquiterpenes (farnesol, cis-nerolidol, trans-nerolidol, α-humulene, β-caryophyllene, and caryophyllene oxide) on the expression of four phase I DMEs (cytochrome P450 3A4 and 2C, carbonyl reductase 1, and aldo-keto reductase 1C) at both the mRNA and protein levels. For this purpose, human precision-cut liver slices (PCLS) prepared from 10 patients and transfected HepG2 cells were used. Western blotting, quantitative real-time PCR and reporter gene assays were employed in the analyses. In the reporter gene assays, all sesquiterpenes significantly induced cytochrome P450 3A4 expression via pregnane X receptor interaction. However in PCLS, their effects on the expression of all the tested DMEs at the mRNA and protein levels were mild or none. High inter-individual variabilities in the basal levels as well as in modulatory efficacy of the tested sesquiterpenes were observed, indicating a high probability of marked differences in the effects of these compounds among the general population. Nevertheless, it seems unlikely that the studied sesquiterpenes would remarkably influence the bioavailability and efficacy of concomitantly administered drugs.
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Affiliation(s)
- Michaela Šadibolová
- Department of Biochemical Sciences, Faculty of Pharmacy in Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic (T.Z.); (P.M.); (L.S.)
| | - Tomáš Zárybnický
- Department of Biochemical Sciences, Faculty of Pharmacy in Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic (T.Z.); (P.M.); (L.S.)
| | - Tomáš Smutný
- Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic; (T.S.); (P.P.)
| | - Petr Pávek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic; (T.S.); (P.P.)
| | - Zdeněk Šubrt
- Department of General Surgery, Third Faculty of Medicine and University Hospital Královské Vinohrady, Charles University, 100 34 Prague, Czech Republic;
- Department of Surgery, University Hospital Hradec Králové, 500 05 Hradec Králové, Czech Republic
| | - Petra Matoušková
- Department of Biochemical Sciences, Faculty of Pharmacy in Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic (T.Z.); (P.M.); (L.S.)
| | - Lenka Skálová
- Department of Biochemical Sciences, Faculty of Pharmacy in Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic (T.Z.); (P.M.); (L.S.)
| | - Iva Boušová
- Department of Biochemical Sciences, Faculty of Pharmacy in Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic (T.Z.); (P.M.); (L.S.)
- Correspondence: ; Tel.: +420-495-067-406
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Boušová I, Košťáková Š, Matoušková P, Bártíková H, Szotáková B, Skálová L. Monosodium glutamate-induced obesity changed the expression and activity of glutathione S-transferases in mouse heart and kidney. Pharmazie 2018; 72:257-259. [PMID: 29441869 DOI: 10.1691/ph.2017.6886] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
Obesity may affect activity and/or expression of enzymes participating in xenobiotics' detoxification and antioxidant defense. This study sought to investigate the activities and expression of cardiac and renal glutathione S-transferase (GST) isoforms in order to reveal possible differences between obese and control mice. For this purpose, mice with monosodium glutamate (MSG)-induced obesity were used as an experimental model. Obesity was induced in newborn male mice by repeated s.c. administration of MSG. At 8 months of age, mice were sacrificed and specific activity, protein and mRNA expressions levels of GSTs were analyzed in their heart and kidney. In hearts of obese mice, specific activity of GST was decreased by 51% compared to control. This reduction was accompanied by a decline in GSTP-class protein and Gstp1/2 mRNA expression levels. In contrast, specific activity of GST was elevated by 31% in kidney of obese mice and this increase was accompanied by upregulation of GSTA-class protein and Gsta1/2 mRNA expressions. Increased capacity of renal GSTs together with GSTA upregulation may serve as compensatory mechanism against elevated oxidative stress, which accompanies obesity. On the other hand, decreased cardiac GST activity in obese mice and GSTP downregulation may worsen the defense against oxidative stress and harmful xenobiotics.
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Zárybnický T, Matoušková P, Lancošová B, Šubrt Z, Skálová L, Boušová I. Inter-Individual Variability in Acute Toxicity of R-Pulegone and R-Menthofuran in Human Liver Slices and Their Influence on miRNA Expression Changes in Comparison to Acetaminophen. Int J Mol Sci 2018; 19:ijms19061805. [PMID: 29921785 PMCID: PMC6032148 DOI: 10.3390/ijms19061805] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 06/14/2018] [Accepted: 06/16/2018] [Indexed: 12/12/2022] Open
Abstract
Monoterpenes R-pulegone (PUL) and R-menthofuran (MF), abundant in the Lamiaceae family, are frequently used in herb and food products. Although their hepatotoxicity was shown in rodent species, information about their effects in human liver has been limited. The aim of our study was to test the effects of PUL, MF and acetaminophen (APAP, as a reference compound) on cell viability and microRNA (miRNA) expression in human precision-cut liver slices. Slices from five patients were used to follow up on the inter-individual variability. PUL was toxic in all liver samples (the half-maximal effective concentration was 4.0 µg/mg of tissue), while MF and surprisingly APAP only in two and three liver samples, respectively. PUL also changed miRNA expression more significantly than MF and APAP. The most pronounced effect was a marked decrease of miR-155-5p expression caused by PUL even in non-toxic concentrations in all five liver samples. Our results showed that PUL is much more toxic than MF and APAP in human liver and that miR-155-5p could be a good marker of PUL early hepatotoxicity. Marked inter-individual variabilities in all our results demonstrate the high probability of significant differences in the hepatotoxicity of tested compounds among people.
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Affiliation(s)
- Tomáš Zárybnický
- Department of Biochemical Sciences, Faculty of Pharmacy in Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic.
| | - Petra Matoušková
- Department of Biochemical Sciences, Faculty of Pharmacy in Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic.
| | - Bibiána Lancošová
- Department of Biochemical Sciences, Faculty of Pharmacy in Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic.
| | - Zdeněk Šubrt
- Department of Surgery, Faculty of Medicine in Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic.
- Department of Surgery, University Hospital Hradec Králové, 500 05 Hradec Králové, Czech Republic.
| | - Lenka Skálová
- Department of Biochemical Sciences, Faculty of Pharmacy in Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic.
| | - Iva Boušová
- Department of Biochemical Sciences, Faculty of Pharmacy in Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic.
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Lněničková K, Dymáková A, Szotáková B, Boušová I. Sulforaphane Alters β-Naphthoflavone-Induced Changes in Activity and Expression of Drug-Metabolizing Enzymes in Rat Hepatocytes. Molecules 2017; 22:molecules22111983. [PMID: 29144397 PMCID: PMC6150368 DOI: 10.3390/molecules22111983] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 11/14/2017] [Indexed: 12/16/2022] Open
Abstract
Sulforaphane (SFN), an isothiocyanate found in cruciferous vegetables, exerts many beneficial effects on human health such as antioxidant, anti-inflammatory, and anticancer effects. The effect of SFN alone on drug-metabolizing enzymes (DMEs) has been investigated in numerous in vitro and in vivo models, but little is known about the effect of SFN in combination with cytochrome P450 (CYP) inducer. The aim of our study was to evaluate the effect of SFN on the activity and gene expression of selected DMEs in primary cultures of rat hepatocytes treated or non-treated with β-naphthoflavone (BNF), the model CYP1A inducer. In our study, SFN alone did not significantly alter the activity and expression of the studied DMEs, except for the glutathione S-transferase (GSTA1) mRNA level, which was significantly enhanced. Co-treatment of hepatocytes with SFN and BNF led to a substantial increase in sulfotransferase, aldoketoreductase 1C, carbonylreductase 1 and NAD(P)H:quinone oxidoreductase 1 activity and a marked decrease in cytochrome P450 (CYP) Cyp1a1, Cyp2b and Cyp3a4 expression in comparison to the treatment with BNF alone. Sulforaphane is able to modulate the activity and/or expression of DMEs, thus shifting the balance of carcinogen metabolism toward deactivation, which could represent an important mechanism of its chemopreventive activity.
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Affiliation(s)
- Kateřina Lněničková
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University, Heyrovského 1203, 50005 Hradec Králové, Czech Republic.
| | - Andrea Dymáková
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University, Heyrovského 1203, 50005 Hradec Králové, Czech Republic.
| | - Barbora Szotáková
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University, Heyrovského 1203, 50005 Hradec Králové, Czech Republic.
| | - Iva Boušová
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University, Heyrovského 1203, 50005 Hradec Králové, Czech Republic.
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Bártíková H, Boušová I, Matoušková P, Szotáková B, Skálová L. Effect of Green Tea Extract-Enriched Diets on Insulin and Leptin Levels, Oxidative Stress Parameters and Antioxidant Enzymes Activities in Obese Mice. POL J FOOD NUTR SCI 2017. [DOI: 10.1515/pjfns-2017-0004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Zárybnický T, Boušová I, Ambrož M, Skálová L. Hepatotoxicity of monoterpenes and sesquiterpenes. Arch Toxicol 2017; 92:1-13. [DOI: 10.1007/s00204-017-2062-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 09/11/2017] [Indexed: 12/13/2022]
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Ambrož M, Hanušová V, Skarka A, Boušová I, Králová V, Langhasová L, Skálová L. Essential Oil from Myrica rubra Leaves Potentiated Antiproliferative and Prooxidative Effect of Doxorubicin and its Accumulation in Intestinal Cancer Cells. Planta Med 2016; 82:89-96. [PMID: 26485638 DOI: 10.1055/s-0035-1558083] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Essential oil from the leaves of Myrica rubra, a subtropical Asian fruit tree traditionally used in folk medicines, has a significant antiproliferative effect in several intestinal cancer cell lines. Doxorubicin belongs to the most important cytostatics used in cancer therapy. The present study was designed to evaluate the effects of defined essential oil from M. rubra leaves on efficacy, prooxidative effect, and accumulation of doxorubicin in cancer cell lines and in non-cancerous cells. For this purpose, intestinal adenocarcinoma CaCo2 cells were used. Human fibroblasts (periodontal ligament) and a primary culture of rat hepatocytes served as models of non-cancerous cells. The results showed that the sole essential oil from M. rubra has a strong prooxidative effect in cancer cells while it acts as a mild antioxidant in hepatocytes. Combined with doxorubicin, the essential oil enhanced the antiproliferative and prooxidative effects of doxorubicin in cancer cells. At higher concentrations, synergism of doxorubicin and essential oil from M. rubra was proved. In non-cancerous cells, the essential oil did not affect the toxicity of doxorubicin and the doxorubicin-mediated reactive oxygen species formation. The essential oil increased the intracellular concentration of doxorubicin and enhanced selectively the doxorubicin accumulation in nuclei of cancer cells. Taken together, essential oil from M. rubra leaves could be able to improve the doxorubicin efficacy in cancer cells due to an increased reactive oxygen species production, and the doxorubicin accumulation in nuclei of cancer cells.
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Affiliation(s)
- Martin Ambrož
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Hradec Králové, Czech Republic
| | - Veronika Hanušová
- Department of Medical Biology and Genetics, Charles University in Prague, Faculty of Medicine in Hradec Králové, Hradec Králové, Czech Republic
| | - Adam Skarka
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Hradec Králové, Czech Republic
| | - Iva Boušová
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Hradec Králové, Czech Republic
| | - Věra Králová
- Department of Medical Biology and Genetics, Charles University in Prague, Faculty of Medicine in Hradec Králové, Hradec Králové, Czech Republic
| | - Lenka Langhasová
- Laboratory of Plant Biotechnologies, Institute of Experimental Botany, Czech Academy of Sciences, Praha, Czech Republic
| | - Lenka Skálová
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Hradec Králové, Czech Republic
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Ambrož M, Boušová I, Skarka A, Hanušová V, Králová V, Matoušková P, Szotáková B, Skálová L. The Influence of Sesquiterpenes from Myrica rubra on the Antiproliferative and Pro-Oxidative Effects of Doxorubicin and Its Accumulation in Cancer Cells. Molecules 2015; 20:15343-58. [PMID: 26307963 PMCID: PMC6331978 DOI: 10.3390/molecules200815343] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 08/06/2015] [Accepted: 08/13/2015] [Indexed: 01/05/2023] Open
Abstract
The sesquiterpenes β-caryophyllene, β-caryophyllene oxide (CAO), α-humulene (HUM), trans-nerolidol (NER), and valencene (VAL) are substantial components of the essential oil from Myrica rubra leaves which has exhibited significant antiproliferative effects in several intestinal cancer cell lines, with CaCo-2 cells being the most sensitive. The present study was designed to evaluate the effects of these sesquiterpenes on the efficacy and toxicity of the anticancer drug doxorubicin (DOX) in CaCo-2 cancer cells and in primary culture of rat hepatocytes. Our results showed that HUM, NER, VAL and CAO inhibited proliferation of CaCo-2 cancer cells but they did not affect the viability of hepatocytes. CAO, NER and VAL synergistically potentiated the efficacy of DOX in cancer cells killing. All sesquiterpenes exhibited the ability to selectively increase DOX accumulation in cancer cells and did not affect DOX concentration in hepatocytes. Additionally, CAO and VAL were able to increase the pro-oxidative effect of DOX in CaCo-2 cells. Moreover, CAO mildly ameliorated DOX toxicity in hepatocytes. Based on all results, CAO seems to be the most promising compound for further testing.
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Affiliation(s)
- Martin Ambrož
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, Hradec Králové CZ-500 05, Czech Republic.
| | - Iva Boušová
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, Hradec Králové CZ-500 05, Czech Republic.
| | - Adam Skarka
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, Hradec Králové CZ-500 05, Czech Republic.
| | - Veronika Hanušová
- Department of Medical Biology and Genetics, Faculty of Medicine, Charles University in Prague, Šimkova 870, Hradec Králové CZ-500 38, Czech Republic.
| | - Věra Králová
- Department of Medical Biology and Genetics, Faculty of Medicine, Charles University in Prague, Šimkova 870, Hradec Králové CZ-500 38, Czech Republic.
| | - Petra Matoušková
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, Hradec Králové CZ-500 05, Czech Republic.
| | - Barbora Szotáková
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, Hradec Králové CZ-500 05, Czech Republic.
| | - Lenka Skálová
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, Hradec Králové CZ-500 05, Czech Republic.
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Bártíková H, Skálová L, Valentová K, Matoušková P, Szotáková B, Martin J, Kvita V, Boušová I. Effect of oral administration of green tea extract in various dosage schemes on oxidative stress status of mice in vivo. Acta Pharm 2015; 65:65-73. [PMID: 25781705 DOI: 10.1515/acph-2015-0007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Indexed: 11/15/2022]
Abstract
Green tea is a favorite beverage and its extracts are popular components of dietary supplements. The aim of the present in vivo study was to obtain detailed information about the effect of a standard green tea extract (Polyphenon, P), at different doses, on antioxidant enzymes and oxidative stress markers in murine blood, liver, small and large intestine. In all doses, P improved the oxidative stress status via an increased content of plasmatic SH-groups (by 21-67 %). Regarding antioxidant enzymes in tissues, the low dose of P had the best positive effect as it elevated the activity of NADPH quinone reductase in liver and small intestine, thioredoxin reductase in small intestine and hepatic superoxide dismutase. Based on these facts, consumption of green tea seems to be safe and beneficial, while consumption of dietary supplements containing high doses of catechins may disturb oxidative balance by lowering the activity of thioredoxin reductase, glutathione S-transferase, glutathione reductase and superoxide dismutase.
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Affiliation(s)
- Hana Bártíková
- Faculty of Pharmacy Charles University in Prague CZ-500 05 Hradec Králové Czech Republic
| | - Lenka Skálová
- Faculty of Pharmacy Charles University in Prague CZ-500 05 Hradec Králové Czech Republic
| | - Kateřina Valentová
- Faculty of Medicine and Dentistry Palacký University CZ-775 15 Olomouc Czech Republic
| | - Petra Matoušková
- Faculty of Pharmacy Charles University in Prague CZ-500 05 Hradec Králové Czech Republic
| | - Barbora Szotáková
- Faculty of Pharmacy Charles University in Prague CZ-500 05 Hradec Králové Czech Republic
| | - Jan Martin
- Faculty of Pharmacy Charles University in Prague CZ-500 05 Hradec Králové Czech Republic
| | - Vojtěch Kvita
- Faculty of Pharmacy Charles University in Prague CZ-500 05 Hradec Králové Czech Republic
| | - Iva Boušová
- Faculty of Pharmacy Charles University in Prague CZ-500 05 Hradec Králové Czech Republic
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Boušová I, Matoušková P, Bártíková H, Szotáková B, Hanušová V, Tománková V, Anzenbacherová E, Lišková B, Anzenbacher P, Skálová L. Influence of diet supplementation with green tea extract on drug-metabolizing enzymes in a mouse model of monosodium glutamate-induced obesity. Eur J Nutr 2015; 55:361-71. [PMID: 25663641 DOI: 10.1007/s00394-015-0856-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 01/31/2015] [Indexed: 12/22/2022]
Abstract
PURPOSE Consumption of dietary supplements with green tea extract (GTE) is popular for weight management, but it may be accompanied by various side effects, including interactions with drugs. The aim of the present in vivo study was to evaluate the effect of defined GTE (Polyphenon 60) in three dosage schemes on insulin, leptin and drug-metabolizing enzymes in obese mice. METHODS Experimental obesity was induced by repeated s.c. application of monosodium glutamate to newborn mice. Green tea extract was administered in three dosage schemes in chow diet. The plasmatic levels of insulin and leptin were assayed using enzyme-linked immunosorbent assay. Enzyme activities and mRNA expressions of drug-metabolizing enzymes (totally 13) were analyzed in liver and small intestine using spectrophotometric and HPLC assays and RT-PCR, respectively. RESULTS GTE-treatment decreased insulin and leptin levels. Eleven enzymes were significantly affected by GTE-treatment. Long-term administration of 0.01% GTE caused increase in the activity and mRNA level of cytochrome P450 3A4 (CYP3A4) ortholog in the liver as well as in the small intestine. Interestingly, short-term overdose by GTE (0.1%) had more pronounced effects on enzyme activities and mRNA expressions than long-term overdose. CONCLUSIONS GTE-mediated induction of CYP3A4 ortholog, the main drug-metabolizing enzyme, could result in decreased efficacy of simultaneously or subsequently administered drug in obese individuals.
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Affiliation(s)
- Iva Boušová
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, 500 05, Hradec Králové, Czech Republic.
| | - Petra Matoušková
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, 500 05, Hradec Králové, Czech Republic
| | - Hana Bártíková
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, 500 05, Hradec Králové, Czech Republic
| | - Barbora Szotáková
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, 500 05, Hradec Králové, Czech Republic
| | - Veronika Hanušová
- Faculty of Medicine in Hradec Králové, Charles University in Prague, Šimkova 870, 500 38, Hradec Králové, Czech Republic
| | - Veronika Tománková
- Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 775 15, Olomouc, Czech Republic
| | - Eva Anzenbacherová
- Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 775 15, Olomouc, Czech Republic
| | - Barbora Lišková
- Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 775 15, Olomouc, Czech Republic
| | - Pavel Anzenbacher
- Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 3, 775 15, Olomouc, Czech Republic
| | - Lenka Skálová
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, 500 05, Hradec Králové, Czech Republic
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Matoušková P, Bártíková H, Boušová I, Levorová L, Szotáková B, Skálová L. Drug-Metabolizing and Antioxidant Enzymes in Monosodium L-Glutamate Obese Mice. Drug Metab Dispos 2014; 43:258-65. [DOI: 10.1124/dmd.114.061176] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Bártíková H, Boušová I, Jedličková P, Lněničková K, Skálová L, Szotáková B. Effect of standardized cranberry extract on the activity and expression of selected biotransformation enzymes in rat liver and intestine. Molecules 2014; 19:14948-60. [PMID: 25237750 PMCID: PMC6271979 DOI: 10.3390/molecules190914948] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 08/28/2014] [Accepted: 09/04/2014] [Indexed: 01/30/2023] Open
Abstract
The use of dietary supplements containing cranberry extract is a common way to prevent urinary tract infections. As consumption of these supplements containing a mixture of concentrated anthocyanins and proanthocyanidins has increased, interest in their possible interactions with drug-metabolizing enzymes has grown. In this in vivo study, rats were treated with a standardized cranberry extract (CystiCran®) obtained from Vaccinium macrocarpon in two dosage schemes (14 days, 0.5 mg of proanthocyanidins/kg/day; 1 day, 1.5 mg of proanthocyanidins/kg/day). The aim of this study was to evaluate the effect of anthocyanins and proanthocyanidins contained in this extract on the activity and expression of intestinal and hepatic biotransformation enzymes: cytochrome P450 (CYP1A1, CYP1A2, CYP2B and CYP3A), carbonyl reductase 1 (CBR1), glutathione-S-transferase (GST) and UDP-glucuronosyl transferase (UGT). Administration of cranberry extract led to moderate increases in the activities of hepatic CYP3A (by 34%), CYP1A1 (by 38%), UGT (by 40%), CBR1 (by 17%) and GST (by 13%), while activities of these enzymes in the small intestine were unchanged. No changes in the relative amounts of these proteins were found. Taken together, the interactions of cranberry extract with simultaneously administered drugs seem not to be serious.
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Affiliation(s)
- Hana Bártíková
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Heyrovského 1203, Hradec Králové 50005, Czech Republic.
| | - Iva Boušová
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Heyrovského 1203, Hradec Králové 50005, Czech Republic.
| | - Pavla Jedličková
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Heyrovského 1203, Hradec Králové 50005, Czech Republic.
| | - Kateřina Lněničková
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Heyrovského 1203, Hradec Králové 50005, Czech Republic.
| | - Lenka Skálová
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Heyrovského 1203, Hradec Králové 50005, Czech Republic.
| | - Barbora Szotáková
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Heyrovského 1203, Hradec Králové 50005, Czech Republic.
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Matoušková P, Bártíková H, Boušová I, Szotáková B, Martin J, Skorkovská J, Hanušová V, Tománková V, Anzenbacherová E, Lišková B, Anzenbacher P, Skálová L. Effect of defined green tea extract in various dosage schemes on drug-metabolizing enzymes in mice in vivo. J Funct Foods 2014. [DOI: 10.1016/j.jff.2014.06.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Matoušková P, Bártíková H, Boušová I, Hanušová V, Szotáková B, Skálová L. Reference genes for real-time PCR quantification of messenger RNAs and microRNAs in mouse model of obesity. PLoS One 2014; 9:e86033. [PMID: 24465854 PMCID: PMC3895018 DOI: 10.1371/journal.pone.0086033] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Accepted: 12/04/2013] [Indexed: 11/18/2022] Open
Abstract
Obesity and metabolic syndrome is increasing health problem worldwide. Among other ways, nutritional intervention using phytochemicals is important method for treatment and prevention of this disease. Recent studies have shown that certain phytochemicals could alter the expression of specific genes and microRNAs (miRNAs) that play a fundamental role in the pathogenesis of obesity. For study of the obesity and its treatment, monosodium glutamate (MSG)-injected mice with developed central obesity, insulin resistance and liver lipid accumulation are frequently used animal models. To understand the mechanism of phytochemicals action in obese animals, the study of selected genes expression together with miRNA quantification is extremely important. For this purpose, real-time quantitative PCR is a sensitive and reproducible method, but it depends on proper normalization entirely. The aim of present study was to identify the appropriate reference genes for mRNA and miRNA quantification in MSG mice treated with green tea catechins, potential anti-obesity phytochemicals. Two sets of reference genes were tested: first set contained seven commonly used genes for normalization of messenger RNA, the second set of candidate reference genes included ten small RNAs for normalization of miRNA. The expression stability of these reference genes were tested upon treatment of mice with catechins using geNorm, NormFinder and BestKeeper algorithms. Selected normalizers for mRNA quantification were tested and validated on expression of NAD(P)H:quinone oxidoreductase, biotransformation enzyme known to be modified by catechins. The effect of selected normalizers for miRNA quantification was tested on two obesity- and diabetes- related miRNAs, miR-221 and miR-29b, respectively. Finally, the combinations of B2M/18S/HPRT1 and miR-16/sno234 were validated as optimal reference genes for mRNA and miRNA quantification in liver and 18S/RPlP0/HPRT1 and sno234/miR-186 in small intestine of MSG mice. These reference genes will be used for mRNA and miRNA normalization in further study of green tea catechins action in obese mice.
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Affiliation(s)
- Petra Matoušková
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Hradec Králové, Czech Republic
- * E-mail:
| | - Hana Bártíková
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Hradec Králové, Czech Republic
| | - Iva Boušová
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Hradec Králové, Czech Republic
| | - Veronika Hanušová
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Hradec Králové, Czech Republic
- Department of Medical Biology and Genetics, Charles University in Prague, Faculty of Medicine, Hradec Králové, Czech Republic
| | - Barbora Szotáková
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Hradec Králové, Czech Republic
| | - Lenka Skálová
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Hradec Králové, Czech Republic
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Hanušová V, Tomšík P, Kriesfalusyová L, Pakostová A, Boušová I, Skálová L. In vivo effect of oracin on doxorubicin reduction, biodistribution and efficacy in Ehrlich tumor bearing mice. Pharmacol Rep 2013; 65:445-52. [PMID: 23744429 DOI: 10.1016/s1734-1140(13)71020-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 11/26/2012] [Indexed: 01/22/2023]
Abstract
BACKGROUND The limitation of carbonyl reduction represents one possible way to increase the effectiveness of anthracycline doxorubicin (DOX) in cancer cells and decrease its toxicity in normal cells. In vitro, isoquinoline derivative oracin (ORC) inhibited DOX reduction and increased the antiproliferative effect of DOX in MCF-7 breast cancer cells. Moreover, ORC significantly decreases DOX toxicity in non-cancerous MCF-10A breast cells and in hepatocytes. The present study was designed to test in mice the in vivo effect of ORC on plasma and tissue concentrations of DOX and its main metabolite DOXOL. The effect of ORC on DOX efficacy in mice bearing solid Ehrlich tumors (EST) was also studied. METHODS DOX and DOX + ORC combinations were iv administered to healthy mice. Blood samples, livers and hearts were collected during the following 48 h. DOX and DOXOL concentrations were assayed using HPLC. The mice with inoculated EST cells were treated repeatedly iv with DOX and DOX + ORC combinations, and the growth of tumors was monitored. RESULTS ORC in combination with DOX significantly decreased DOXOL plasma concentrations during four hours after administration, but this significantly affected neither DOX plasma concentrations nor DOX or DOXOL concentrations in the liver and heart at any of intervals tested. In EST bearing mice, ORC did not significantly affect DOX efficacy on tumor growth. However, EST was shown to be an improper model for the testing of ORC efficacy in vivo, as ORC did not inhibit DOXOL formation in EST. CONCLUSIONS In vivo, ORC was able to retard DOXOL formation but was not able to improve DOX efficacy in EST-bearing mice.
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Affiliation(s)
- Veronika Hanušová
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, Hradec Králové, CZ 500 05, Czech Republic
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Szotáková B, Bártíková H, Hlaváčová J, Boušová I, Skálová L. Inhibitory effect of anthocyanidins on hepatic glutathione S-transferase, UDP-glucuronosyltransferase and carbonyl reductase activities in rat and human. Xenobiotica 2013; 43:679-85. [DOI: 10.3109/00498254.2012.756557] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Boušová I, Skálová L. Inhibition and induction of glutathione S-transferases by flavonoids: possible pharmacological and toxicological consequences. Drug Metab Rev 2012; 44:267-86. [PMID: 22998389 DOI: 10.3109/03602532.2012.713969] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Many studies reviewed herein demonstrated the potency of some flavonoids to modulate the activity and/or expression of glutathione S-transferases (GSTs). Because GSTs play a crucial role in the detoxification of xenobiotics, their inhibition or induction may significantly affect metabolism and biological effects of many drugs, industrials, and environmental contaminants. The effect of flavonoids on GSTs strongly depends on flavonoid structure, concentration, period of administration, as well as on GST isoform and origin. Moreover, the results obtained in vitro are often contrary to the vivo results. Based on these facts, the revelation of important flavonoid-drug or flavonoid-pollutant interaction has been complicated. However, it should be borne in mind that ingestion of certain flavonoids in combination with drugs or pollutants (e.g., acetaminophen, simvastatin, cyclophosphamide, cisplatine, polycyclic aromatic hydrocarbons, chlorpyrifos, acrylamide, and isocyanates), which are GST substrates, could have significant pharmacological and toxicological consequences. Although reasonable consumptions of a flavonoids-rich diet (that may lead to GST induction) are mostly beneficial, the uncontrolled intake of high concentrations of certain flavonoids (e.g., quercetin and catechins) in dietary supplements (that may cause GST inhibition) may threaten human health.
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Affiliation(s)
- Iva Boušová
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Hradec Králové, Czech Republic, European Union
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Abstract
Flavonoids are known to modulate catalytic activity and expression of various enzymes. Glutathione S-transferases (GSTs) are the important biotransformation enzymes defending cells against potentially toxic xenobiotics. Therefore, the modulation of GST activity may influence detoxification of xenobiotics. The aim of this study was to evaluate the in vitro inhibitory activity of several dietary flavonoids towards purified equine liver cytosolic GST. Pure GST was incubated in the presence or absence of flavonoids (10 nM-100 µM), its activity was assayed using 1-chloro-2,4-dinitrobenzene (CDNB) as a substrate, and half maximal inhibitory concentrations (IC(50)) were determined. The obtained results were confirmed by GST activity staining of native polyacrylamide gel electrophoresis (PAGE) gels. For the most potent inhibitor, the inhibition kinetics study was performed. From 24 flavonoids tested, the most potent GST inhibitor was gallocatechin gallate (IC(50) = 1.26 µM). The inhibition kinetics of this compound followed noncompetitive mechanism versus both glutathione (K(i) = 35.9 µM) and CDNB (K(i) = 34.1 µM). The inhibitory potency of different flavonoids for GST activity depended mainly on the pattern of hydroxylation and number of hydroxyl groups in the ring B. Especially, pyrogallol-type catechins with 3-OH group esterified with gallic acid showed strong potential to inhibit GST in vitro.
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Affiliation(s)
- Iva Boušová
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Hradec Králové, Czech Republic
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Hanušová V, Boušová I, Pakostová A, Skálová L. The influence of oracin on reduction and toxicity of doxorubicin in hepatocytes and mammary epithelial cells MCF-10A. Xenobiotica 2012; 42:571-9. [PMID: 22217270 DOI: 10.3109/00498254.2011.645517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The ways, how to increase effectiveness of doxorubicin (DOX) in cancer cells and decrease its toxicity in normal cells, have been intensively studied. In breast cancer cells MCF-7, isoquinoline derivative oracin (ORC) inhibited DOX reduction and increased DOX antiproliferative effect. The aim of this study was to test the influence of ORC on the reduction of DOX and its toxicity in hepatocytes and non-tumourous breast cells. The kinetics of DOX reduction was measured in cytosols from rat liver, human liver and human mammary epithelial cells MCF-10A. Activity and expression of carbonyl reductase 1 (CBR1) were assayed using menadione as a substrate and western blot analysis. End-point tests of viability served for study of cytotoxicity of DOX, ORC and DOX+ORC combinations in rat hepatocytes and MCF-10A cells. The inhibitory effect of ORC on DOX reductases was almost none in MCF-10A cells and mild in liver. CBR1 expression and activity was lower in non-tumourous MCF-10A cells than in cancer MCF-7 cells. Cytotoxicity tests showed that DOX+ORC combinations had significantly lower toxicity than DOX alone in MCF-10A cells as well as in hepatocytes. ORC significantly decreases DOX toxicity in MCF-10A and in hepatocytes. Therefore, concomitant use of ORC and DOX may protect normal cells against DOX toxicity.
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Affiliation(s)
- V Hanušová
- Department of Biochemical Sciences, Charles University, Hradec Králové, Czech Republic
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Procházková D, Boušová I, Wilhelmová N. Antioxidant and prooxidant properties of flavonoids. Fitoterapia 2011. [PMID: 21277359 DOI: 10.1016/j.fitote.2011.01.018/1873-6971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The interest in possible health benefits of flavonoids has increased owing to their potent antioxidant and free radical scavenging activities observed in vitro. Nevertheless, the antioxidant efficacy of flavonoids in vivo is less documented and their prooxidant properties have been actually described in vivo. Due to their prooxidant properties, they are able to cause oxidative damage by reacting with various biomolecules, such as lipids, proteins and DNA. Hence, the aim of this review is to discuss both the antioxidant and prooxidant effects of flavonoids.
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Affiliation(s)
- D Procházková
- Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Czech Republic.
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