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Ali MS, Al-Lohedan HA, Bhati R, Muthukumaran J. Interaction of the lysozyme with anticoagulant drug warfarin: Spectroscopic and computational analyses. Heliyon 2024; 10:e30818. [PMID: 38784535 PMCID: PMC11112289 DOI: 10.1016/j.heliyon.2024.e30818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 05/02/2024] [Accepted: 05/06/2024] [Indexed: 05/25/2024] Open
Abstract
Warfarin is a cardiovascular drug, used to treat or inhibit the coagulation of the blood. In this paper, we have studied the interaction of lysozyme with warfarin using several experimental (fluorescence, UV-visible and circular dichroism spectroscopies) and computational (molecular docking, molecular dynamics and DFT) approaches. Experimental studies have suggested that there was a strong interaction between lysozyme and warfarin. Inner filter effect played important role in fluorescence experimental data which show that the emission intensity of lysozyme decreased on the addition of warfarin, however, after inner filter effect correction the actual outcome turned out be the fluorescence enhancement. The extent of binding, increased with temperature rise. The interaction was primarily taken place via the dominance of hydrophobic forces. Small amount of warfarin didn't influence the secondary structure of lysozyme; however, the higher concentration of warfarin caused a decrease in the helicity of the protein and a consequent partial unfolding. Molecular docking studies were also performed which revealed that warfarin binds with lysozyme mainly with hydrophobic forces along with a significant contribution of hydrogen bonding. The flexibility of warfarin played important role in fitting the molecule into the binding pocket of lysozyme. Frontier molecular orbitals of warfarin, using DFT, in free as well as complexed form have also been calculated and discussed. Molecular dynamics simulations of unbound and warfarin bound lysozyme reveal a stable complex with slightly higher RMSD values in the presence of warfarin. Despite slightly increased RMSF values, the overall compactness and folding properties remain consistent, emphasizing strong binding towards lysozyme through the results obtained from intermolecular hydrogen bonding analysis. Essential dynamics analysis suggests warfarin induces slight structural changes without significantly altering the conformation, additionally supported by SASA patterns. Aside from the examination of global and essential motion, the MM/PBSA-based analysis of binding free energy elucidates the significant binding of warfarin to lysozyme, indicating a binding free energy of -13.3471 kcal/mol.
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Affiliation(s)
- Mohd Sajid Ali
- Department of Chemistry, College of Science, King Saud University, P.O. Box-2455, Riyadh, 11451, Saudi Arabia
| | - Hamad A. Al-Lohedan
- Department of Chemistry, College of Science, King Saud University, P.O. Box-2455, Riyadh, 11451, Saudi Arabia
| | - Rittik Bhati
- Department of Biotechnology, Sharda School of Engineering and Technology, Sharda University, Greater Noida, India
| | - Jayaraman Muthukumaran
- Department of Biotechnology, Sharda School of Engineering and Technology, Sharda University, Greater Noida, India
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2
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Jesionek P, Hachuła B, Jurkiewicz K, Włodarczyk P, Hreczka M, Kamiński K, Kamińska E. Variation of Activation Volume as an Indicator of the Difference in Clusterization Phenomenon Induced by H-Bonding and F-Π Stacking Interactions in Enantiomers and a Racemate of Flurbiprofen. J Phys Chem B 2024; 128:4021-4032. [PMID: 38608273 PMCID: PMC11056992 DOI: 10.1021/acs.jpcb.4c00582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 03/23/2024] [Accepted: 03/29/2024] [Indexed: 04/14/2024]
Abstract
In this paper, X-ray diffraction (XRD), differential scanning calorimetry (DSC), broadband dielectric (BDS), and Fourier transform infrared (FTIR) spectroscopy supported by molecular dynamics (MD) simulations and quantum chemical computations were applied to investigate the structural and thermal properties, molecular dynamics, and H-bonding pattern of R-, S-, and RS-flurbiprofen (FLP). Experimental data indicated various spatial molecular arrangements in crystalline forms of examined systems, which seemed to disappear in the liquid state. Surprisingly, deeper analysis of high-pressure dielectric data revealed unexpected variation in the activation volume of pure enantiomers and a racemate. MD simulations showed that it is an effect of the clusterization phenomenon and a higher population of small associates in the former samples. Moreover, theoretical consideration exposed the particular role of unspecific F-Π interactions as a driving force underlying local molecular arrangements of molecules in the liquid and the crystal lattice of R-, S-, and RS-FLP.
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Affiliation(s)
- Paulina Jesionek
- Institute
of Chemistry, Faculty of Science and Technology, University of Silesia in Katowice, Szkolna 9, 40-007 Katowice, Poland
- Department
of Pharmacognosy and Phytochemistry, Faculty of Pharmaceutical Sciences
in Sosnowiec, Medical University of Silesia
in Katowice, Jagiellonska 4, 41-200 Sosnowiec, Poland
| | - Barbara Hachuła
- Institute
of Chemistry, Faculty of Science and Technology, University of Silesia in Katowice, Szkolna 9, 40-007 Katowice, Poland
| | - Karolina Jurkiewicz
- Institute
of Physics, Faculty of Science and Technology, University of Silesia in Katowice, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
| | - Patryk Włodarczyk
- Łukasiewicz
Research Network - Institute of Non-Ferrous Metals, Sowinskiego 5 St., 44-100, Gliwice, Poland
| | - Marek Hreczka
- Łukasiewicz
Research Network - Institute of Non-Ferrous Metals, Sowinskiego 5 St., 44-100, Gliwice, Poland
- Department
of Mechatronics, Silesian University of
Technology, Akademicka
10A St., 44-100 Gliwice, Poland
| | - Kamil Kamiński
- Institute
of Physics, Faculty of Science and Technology, University of Silesia in Katowice, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
| | - Ewa Kamińska
- Department
of Pharmacognosy and Phytochemistry, Faculty of Pharmaceutical Sciences
in Sosnowiec, Medical University of Silesia
in Katowice, Jagiellonska 4, 41-200 Sosnowiec, Poland
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Putriana NA, Rusdiana T, Rostinawati T, Nurfuadah I. Validation of R/S-Warfarin Analysis Method in Human Blood Plasma Using HPLC with Fluorescence Detection and its Application to Patient Samples. JOURNAL OF PHARMACY AND BIOALLIED SCIENCES 2024; 16:44-50. [PMID: 38694966 PMCID: PMC11060620 DOI: 10.4103/jpbs.jpbs_563_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 06/15/2023] [Accepted: 08/01/2023] [Indexed: 05/04/2024] Open
Abstract
Context Warfarin is extensively used for venous thromboembolism and other coagulopathies. In clinical settings, warfarin is administered as a mixture of S-warfarin and R-warfarin, and both enantiomers are metabolized by multiple cytochrome P450 enzymes into many hydroxylation metabolites. Validation of analysis method and estimation of warfarin plasma levels are important, especially in narrow-index drugs such as warfarin. Aims This study aimed to obtain a validated method for analyzing warfarin in patient plasma according to the European Medicines Agency (EMA) guidelines. Materials and Methods A total of 77 patients were enrolled in this study. Five millimeters of venous blood was collected using sodium ethylenediaminetetraacetic acid (EDTA) tubes for pharmacokinetic analysis. Samples were prepared by the protein precipitation technique using acetonitrile. The optimum conditions for the analysis of warfarin in human plasma were tested using fluorescence detector (FLD) high-performance liquid chromatography (HPLC) with Chiralcel OD-RH column (4.6 × 150 mm i.d., 5 μm), Chiralcel OD-RH guard column (4.0 × 10 mm, 5 μm), and a column temperature of 45°C. The mobile phase used was acetonitrile: phosphate buffer pH 2 (40:60), with an isocratic flow rate of 1 ml/min and an injection volume of 20 μl. Excitation and emission wavelengths were 310 and 350 nm (warfarin) and 300 and 400 nm (griseofulvin). The retention time of griseofulvin was 6-7.5 minutes; R-warfarin was 10-11.5 minutes; and S-warfarin was 14-16 minutes. Results The result of this validation obtained the optimum conditions. This method yielded the limit of detection (LOD) values of 0.0674 ppm (R-warfarin) and 0.0897 ppm (S-warfarin). The limit of quantification (LOQ) values were 0.225 ppm (R-warfarin) and 0.298 ppm (S-warfarin). Linearity existed at concentrations of 0.2-3 ppm with the line equation y = 0.0705x + 0.0704 with R² = 0.978 for R-warfarin and y = 0.0513x + 0.0297 with R² = 0.9924 for S-warfarin. At least 75% of the seven concentrations met the reverse concentration requirements, which were below ± 15%. This method met the requirements of accuracy and precision within and between runs, selectivity, and carryover where the %RSD and %diff values were below ± 15%. The mean plasma concentrations of R-warfarin and S-warfarin were found to be 0.76 ± 1.87 (SD) μg/ml and 0.59 ± 0.81 (SD) μg/ml, respectively. The mean standard dose group plasma concentration from the analysis of 77 samples was 0.68 ± 0.61 μg/mL for R-warfarin and 0.52 ± 0.42 μg/mL for S-warfarin. Conclusions Based on these results, this analytical method can be declared valid and can be used for sample measurement in warfarin pharmacokinetic studies.
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Affiliation(s)
- Norisca Aliza Putriana
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Jawa Barat, Indonesia
| | - Taofik Rusdiana
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Jawa Barat, Indonesia
| | - Tina Rostinawati
- Department of Biology Pharmacy, Faculty of Pharmacy, Universitas Padjadjaran, Jawa Barat, Indonesia
| | - Ilma Nurfuadah
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, Universitas Padjadjaran, Jawa Barat, Indonesia
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Burkina V, Zamaratskaia G, Rasmussen MK. Curcumin and quercetin modify warfarin-induced regulation of porcine CYP1A2 and CYP3A expression and activity in vitro. Xenobiotica 2022; 52:435-441. [PMID: 35695287 DOI: 10.1080/00498254.2022.2089932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The anticoagulant drug warfarin is used treat atrial fibrillation. Several cases of drug-drug and drug-food interactions has been reported for warfarin.The aim of the current study, were to investigate the interaction between simultaneous administration of warfarin with the two ubiquitous flavonoids quercetin and curcumin.Using porcine primary hepatocytes we demonstrated that warfarin treatment increased the mRNA and protein expression of CYP3A(29), while no changes in CYP1A2 were observed. Co-treatment with quercetin and/or curcumin decreased the warfarin induced CYP3A protein expression. Moreover, when quercetin and curcumin were co-administrated to warfarin-exposed hepatocytes the protein expression of CYP1A2 were decreased. In hepatic microsomes, curcumin inhibited the activity of both CYP1A2 and CYP3A, while warfarin had no effect. Both quercetin and curcumin decreased the CYP1A2 and CYP3A activity when co-administrated with warfarin.The results clearly demonstrated that quercetin and curcumin can cause food-drug interactions with warfarin, and that the cocktail effect of exposure to more compounds than one can further enhance these interactions.
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Affiliation(s)
- Viktoriia Burkina
- Swedish University of Agricultural Sciences, Food Science, Uppsala, 750 07 Sweden
| | - Galia Zamaratskaia
- Swedish University of Agricultural Sciences, Food Science, Uppsala, 750 07 Sweden
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Pouncey DL, Barnette DA, Sinnott RW, Phillips SJ, Flynn NR, Hendrickson HP, Swamidass SJ, Miller GP. Discovery of Novel Reductive Elimination Pathway for 10-Hydroxywarfarin. Front Pharmacol 2022; 12:805133. [PMID: 35095511 PMCID: PMC8793337 DOI: 10.3389/fphar.2021.805133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 12/20/2021] [Indexed: 11/20/2022] Open
Abstract
Coumadin (R/S-warfarin) anticoagulant therapy is highly efficacious in preventing the formation of blood clots; however, significant inter-individual variations in response risks over or under dosing resulting in adverse bleeding events or ineffective therapy, respectively. Levels of pharmacologically active forms of the drug and metabolites depend on a diversity of metabolic pathways. Cytochromes P450 play a major role in oxidizing R- and S-warfarin to 6-, 7-, 8-, 10-, and 4′-hydroxywarfarin, and warfarin alcohols form through a minor metabolic pathway involving reduction at the C11 position. We hypothesized that due to structural similarities with warfarin, hydroxywarfarins undergo reduction, possibly impacting their pharmacological activity and elimination. We modeled reduction reactions and carried out experimental steady-state reactions with human liver cytosol for conversion of rac-6-, 7-, 8-, 4′-hydroxywarfarin and 10-hydroxywarfarin isomers to the corresponding alcohols. The modeling correctly predicted the more efficient reduction of 10-hydroxywarfarin over warfarin but not the order of the remaining hydroxywarfarins. Experimental studies did not indicate any clear trends in the reduction for rac-hydroxywarfarins or 10-hydroxywarfarin into alcohol 1 and 2. The collective findings indicated the location of the hydroxyl group significantly impacted reduction selectivity among the hydroxywarfarins, as well as the specificity for the resulting metabolites. Based on studies with R- and S-7-hydroxywarfarin, we predicted that all hydroxywarfarin reductions are enantioselective toward R substrates and enantiospecific for S alcohol metabolites. CBR1 and to a lesser extent AKR1C3 reductases are responsible for those reactions. Due to the inefficiency of reactions, only reduction of 10-hydroxywarfarin is likely to be important in clearance of the metabolite. This pathway for 10-hydroxywarfarin may have clinical relevance as well given its anticoagulant activity and capacity to inhibit S-warfarin metabolism.
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Affiliation(s)
- Dakota L Pouncey
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, United States
| | - Dustyn A Barnette
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, United States
| | - Riley W Sinnott
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, United States
| | - Sarah J Phillips
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR, United States
| | - Noah R Flynn
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, United States
| | - Howard P Hendrickson
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR, United States.,Department of Pharmaceutical Social and Administrative Sciences, McWhorter School of Pharmacy, Samford University, Birmingham, AL, United States
| | - S Joshua Swamidass
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, United States
| | - Grover P Miller
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, United States
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Pes K, Ortiz-Delgado JB, Sarasquete C, Laizé V, Fernández I. Short-term exposure to pharmaceuticals negatively impacts marine flatfish species: Histological, biochemical and molecular clues for an integrated ecosystem risk assessment. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2022; 90:103822. [PMID: 35101594 DOI: 10.1016/j.etap.2022.103822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 01/24/2022] [Accepted: 01/26/2022] [Indexed: 06/14/2023]
Abstract
The marine habitat and its biodiversity can be impacted by released pharmaceuticals. The short-term (7 days) effect of 3 commonly used drugs - warfarin, dexamethasone and imidazole - on Senegalese sole (Solea senegalensis) juveniles was investigated. Occurrence of hemorrhages, histopathological alterations, antioxidant status, activity of antioxidant enzymes and expression of genes involved in the xenobiotic response (pxr, abcb1 and cyp1a), were evaluated. The results showed a time and drug-dependent effect. Warfarin exposure induced hemorrhages, hepatocyte vacuolar degeneration, and altered the activity of glutathione peroxidase (GPx) and the expression of all the studied genes. Dexamethasone exposure increased liver glycogen content, altered antioxidant status, GPx and superoxide dismutase activities, as well as abcb1 and cyp1a expression. Imidazole induced hepatocyte vacuolar degeneration and ballooning, and altered the antioxidant status and expression of the tested genes. The present work anticipates a deeper impact of pharmaceuticals on the aquatic environment than previously reported, thus underlining the urgent need for an integrated risk assessment.
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Affiliation(s)
- Katia Pes
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Juan B Ortiz-Delgado
- Instituto de Ciencias Marinas de Andalucía-ICMAN/CSIC, Campus Universitario Río San Pedro, Apdo. Oficial, 11510 Puerto Real, Cádiz, Spain
| | - Carmen Sarasquete
- Instituto de Ciencias Marinas de Andalucía-ICMAN/CSIC, Campus Universitario Río San Pedro, Apdo. Oficial, 11510 Puerto Real, Cádiz, Spain
| | - Vincent Laizé
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal; S2 AQUA - Sustainable and Smart Aquaculture Collaborative Laboratory, Olhão, Portugal
| | - Ignacio Fernández
- Aquaculture Research Center, Agro-Technological Institute of Castilla y León (ITACyL), Ctra. Arévalo, s/n, 40196 Zamarramala, Segovia, Spain; Centro Oceanográfico de Vigo, Instituto Español de Oceanografía (IEO-CSIC), 36390 Vigo, Spain.
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PXR mediates mifepristone-induced hepatomegaly in mice. Acta Pharmacol Sin 2022; 43:146-156. [PMID: 33782543 PMCID: PMC8724318 DOI: 10.1038/s41401-021-00633-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 02/25/2021] [Indexed: 01/03/2023] Open
Abstract
Mifepristone (Mif), an effective synthetic steroidal antiprogesterone drug, is widely used for medical abortion and pregnancy prevention. Due to its anti-glucocorticoid effect, high-dose Mif is also used to treat Cushing's syndrome. Mif was reported to active pregnane X receptor (PXR) in vitro and PXR can induce hepatomegaly via activation and interaction with yes-associated protein (YAP) pathway. High-dose Mif was reported to induce hepatomegaly in rats and mice, but the underlying mechanism remains unclear. Here, the role of PXR was studied in Mif-induced hepatomegaly in C57BL/6 mice and Pxr-knockout mice. The results demonstrated that high-dose Mif (100 mg · kg-1 · d-1, i.p.) treatment for 5 days significantly induced hepatomegaly with enlarged hepatocytes and promoted proliferation, but low dose of Mif (5 mg · kg-1 · d-1, i.p.) cannot induce hepatomegaly. The dual-luciferase reporter gene assays showed that Mif can activate human PXR in a concentration-dependent manner. In addition, Mif could promote nuclear translocation of PXR and YAP, and significantly induced the expression of PXR, YAP, and their target proteins such as CYP3A11, CYP2B10, UGT1A1, ANKRD, and CTGF. However, Mif (100 mg · kg-1 · d-1, i.p.) failed to induce hepatomegaly in Pxr-knockout mice, as well as hepatocyte enlargement and proliferation, further indicating that Mif-induced hepatomegaly is PXR-dependent. In summary, this study demonstrated that PXR-mediated Mif-induced hepatomegaly in mice probably via activation of YAP pathway. This study provides new insights in Mif-induced hepatomegaly, and provides novel evidence on the crucial function of PXR in liver enlargement and regeneration.
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Chinetti G, Neels JG. Roles of Nuclear Receptors in Vascular Calcification. Int J Mol Sci 2021; 22:6491. [PMID: 34204304 PMCID: PMC8235358 DOI: 10.3390/ijms22126491] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/10/2021] [Accepted: 06/14/2021] [Indexed: 12/17/2022] Open
Abstract
Vascular calcification is defined as an inappropriate accumulation of calcium depots occurring in soft tissues, including the vascular wall. Growing evidence suggests that vascular calcification is an actively regulated process, sharing similar mechanisms with bone formation, implicating both inhibitory and inducible factors, mediated by osteoclast-like and osteoblast-like cells, respectively. This process, which occurs in nearly all the arterial beds and in both the medial and intimal layers, mainly involves vascular smooth muscle cells. In the vascular wall, calcification can have different clinical consequences, depending on the pattern, localization and nature of calcium deposition. Nuclear receptors are transcription factors widely expressed, activated by specific ligands that control the expression of target genes involved in a multitude of pathophysiological processes, including metabolism, cancer, inflammation and cell differentiation. Some of them act as drug targets. In this review we describe and discuss the role of different nuclear receptors in the control of vascular calcification.
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Affiliation(s)
- Giulia Chinetti
- Université Côte d’Azur, CHU, INSERM, C3M, 06204 Nice, France;
| | - Jaap G. Neels
- Université Côte d’Azur, INSERM, C3M, 06204 Nice, France
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9
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Meng R, Zhang X, Wang H, Zhang D, Zhao X. Different Inductive Effects of Praziquantel Racemate and its Enantiomers on the Enzyme CYP3A4 Mediated by Pregnane X Receptor and its Variants. Curr Drug Metab 2021; 22:232-239. [PMID: 33397228 DOI: 10.2174/1389200221999210104204057] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 11/27/2020] [Accepted: 11/28/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Praziquantel (PZQ), which possesses an asymmetric center, is classified as a pyrazinoisoquinoline and has been the mainstay in the treatment of schistosomiasis since 1980. PZQ undergoes a pronounced first-pass metabolism in the liver through the CYP450 system which could be mediated by nuclear receptors. OBJECTIVE The purpose of this study was to investigate the possible different induction effects of CYP3A4 by PZQ racemate and enantiomers via the pregnane X receptor (PXR) and the effect of PXR polymorphism on the induction potency of PZQs. METHODS The dual-luciferase reporter gene systems constructed in HepG2 cells were used to measure the abilities of PZQs to induce CYP3A4 expression mediated by PXR. The mRNA and protein levels of CYP3A4 were evaluated by polymerase chain reaction (PCR) and western blotting, respectively. RESULTS In HepG2 cells transfected with PXRwt, PXR158, PXR163, PXR370 or PXR403 expression plasmids, PZQ racemate and its enantiomers up-regulated the luciferase activity in a concentration-dependent manner, while reaching saturation after transfected with PXR379 expression plasmids. The mRNA and protein expression of CYP3A4 was effectively activated in PXR-transfected HepG2 cells. The induction ability of CYP3A4 mediated by PXR activation by PZQ racemate and its enantiomers were statistically different between the same PXR group and different PXR groups. CONCLUSION The enantioselective induction effects of PZQs on CYP3A4 were related to the enantioselective activations of PXR by PZQs and were influenced by the PXR gene polymorphism. These findings provide a basis for further understanding the enantiomeric metabolism and the variable efficacy of PZQs.
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Affiliation(s)
- Ran Meng
- School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xueli Zhang
- School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Haina Wang
- School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Danlu Zhang
- School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xin Zhao
- School of Life Sciences, Shandong Normal University, Jinan, China
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10
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Beato S, Toledo-Solís FJ, Fernández I. Vitamin K in Vertebrates' Reproduction: Further Puzzling Pieces of Evidence from Teleost Fish Species. Biomolecules 2020; 10:E1303. [PMID: 32917043 PMCID: PMC7564532 DOI: 10.3390/biom10091303] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 09/04/2020] [Accepted: 09/04/2020] [Indexed: 12/15/2022] Open
Abstract
Vitamin K (VK) is a fat-soluble vitamin that vertebrates have to acquire from the diet, since they are not able to de novo synthesize it. VK has been historically known to be required for the control of blood coagulation, and more recently, bone development and homeostasis. Our understanding of the VK metabolism and the VK-related molecular pathways has been also increased, and the two main VK-related pathways-the pregnane X receptor (PXR) transactivation and the co-factor role on the γ-glutamyl carboxylation of the VK dependent proteins-have been thoroughly investigated during the last decades. Although several studies evidenced how VK may have a broader VK biological function than previously thought, including the reproduction, little is known about the specific molecular pathways. In vertebrates, sex differentiation and gametogenesis are tightly regulated processes through a highly complex molecular, cellular and tissue crosstalk. Here, VK metabolism and related pathways, as well as how gametogenesis might be impacted by VK nutritional status, will be reviewed. Critical knowledge gaps and future perspectives on how the different VK-related pathways come into play on vertebrate's reproduction will be identified and proposed. The present review will pave the research progress to warrant a successful reproductive status through VK nutritional interventions as well as towards the establishment of reliable biomarkers for determining proper nutritional VK status in vertebrates.
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Affiliation(s)
- Silvia Beato
- Campus de Vegazana, s/n, Universidad de León (ULE), 24071 León, Spain;
| | - Francisco Javier Toledo-Solís
- Consejo Nacional de Ciencia y Tecnología (CONACYT, México), Av. Insurgentes Sur 1582, Col. Crédito Constructor, Alcaldía Benito Juárez, C.P. 03940 Ciudad de Mexico, Mexico;
- Department of Biology and Geology, University of Almería, 04120 Almería, Spain
| | - Ignacio Fernández
- Center for Aquaculture Research, Agrarian Technological Institute of Castile and Leon, Ctra. Arévalo, s/n, 40196 Zamarramala, Segovia, Spain
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11
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Stefela A, Kaspar M, Drastik M, Holas O, Hroch M, Smutny T, Skoda J, Hutníková M, Pandey AV, Micuda S, Kudova E, Pavek P. 3β-Isoobeticholic acid efficiently activates the farnesoid X receptor (FXR) due to its epimerization to 3α-epimer by hepatic metabolism. J Steroid Biochem Mol Biol 2020; 202:105702. [PMID: 32505574 DOI: 10.1016/j.jsbmb.2020.105702] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Accepted: 05/25/2020] [Indexed: 12/11/2022]
Abstract
Bile acids (BAs) are important signaling molecules acting via the farnesoid X nuclear receptor (FXR) and the membrane G protein-coupled bile acid receptor 1 (GPBAR1). Besides deconjugation of BAs, the oxidoreductive enzymes of colonic bacteria and hepatocytes enable the conversion of BAs into their epimers or dehydrogenated forms. Obeticholic acid (OCA) is the first-in-class BA-derived FXR agonist approved for the treatment of primary biliary cholangitis. Herein, a library of OCA derivatives, including 7-keto, 6-ethylidene derivatives and 3β-epimers, was synthetized and investigated in terms of interactions with FXR and GPBAR1 in transaction assays and evaluated for FXR target genes expression in human hepatocytes and C57BL/6 mice. The derivatives were further subjected to cell-free analysis employing in silico molecular docking and a TR-FRET assay. The conversion of the 3βhydroxy epimer and its pharmacokinetics in mice were studied using LC-MS. We found that only the 3β-hydroxy epimer of OCA (3β-isoOCA) possesses significant activity to FXR in hepatic cells and mice. However, in a cell-free assay, 3β-isoOCA had about 9-times lower affinity to FXR than did OCA. We observed that 3β-isoOCA readily epimerizes to OCA in hepatocytes and murine liver. This conversion was significantly inhibited by the hydroxy-Δ5-steroid dehydrogenase inhibitor trilostane. In addition, we found that 3,7-dehydroobeticholic acid is a potent GPBAR1 agonist. We conclude that 3β-isoOCA significantly activates FXR due to its epimerization to the more active OCA by hepatic metabolism. Other modifications as well as epimerization on the C3/C7 positions and the introduction of 6-ethylidene in the CDCA scaffold abrogate FXR agonism and alleviate GPBAR1 activation.
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Affiliation(s)
- Alzbeta Stefela
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, 500 05, Czech Republic
| | - Miroslav Kaspar
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo Nam. 2, Prague 6 - Dejvice, 166 10, Czech Republic; Faculty of Sciences, Charles University in Prague, Albertov 6, Prague 2, 128 43, Czech Republic
| | - Martin Drastik
- Department of Physical Chemistry, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, 500 05, Czech Republic
| | - Ondrej Holas
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, 500 05, Czech Republic
| | - Milos Hroch
- Department of Medical Biochemistry, Faculty of Medicine in Hradec Kralove, Charles University, Simkova 870/13, Hradec Kralove, 500 03, Czech Republic
| | - Tomas Smutny
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, 500 05, Czech Republic
| | - Josef Skoda
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, 500 05, Czech Republic
| | - Miriama Hutníková
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, 500 05, Czech Republic
| | - Amit V Pandey
- Pediatric Endocrinology, University Children's Hospital, Department of Biomedical Research, University of Bern, Bern, Switzerland
| | - Stanislav Micuda
- Department of Pharmacology, Faculty of Medicine in Hradec Kralove, Charles University, Simkova 870/13, Hradec Kralove, 500 03, Czech Republic
| | - Eva Kudova
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo Nam. 2, Prague 6 - Dejvice, 166 10, Czech Republic
| | - Petr Pavek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, 500 05, Czech Republic.
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12
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Yang W, Yu Z, Chiyoya M, Liu X, Daitoku K, Motomura S, Imaizumi T, Fukuda I, Furukawa KI, Tsuji M, Seya K. Menaquinone-4 Accelerates Calcification of Human Aortic Valve Interstitial Cells in High-Phosphate Medium through PXR. J Pharmacol Exp Ther 2019; 372:277-284. [PMID: 31843813 DOI: 10.1124/jpet.119.263160] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 12/11/2019] [Indexed: 12/13/2022] Open
Abstract
Recently, we confirmed that in human aortic valve interstitial cells (HAVICs) isolated from patients with aortic valve stenosis (AVS), calcification is induced in high inorganic phosphate (high-Pi) medium by warfarin (WFN). Because WFN is known as a vitamin K antagonist, reducing the formation of blood clots by vitamin K cycle, we hypothesized that vitamin K regulates WFN-induced HAVIC calcification. Here, we sought to determine whether WFN-induced HAVIC calcification in high-Pi medium is inhibited by menaquinone-4 (MK-4), the most common form of vitamin K2 in animals. HAVICs obtained from patients with AVS were cultured in α-modified Eagle's medium containing 10% FBS, and when the cells reached 80%-90% confluency, they were further cultured in the presence or absence of MK-4 and WFN for 7 days in high-Pi medium (3.2 mM Pi). Intriguingly, in high-Pi medium, MK-4 dose-dependently accelerated WFN-induced HAVIC calcification and also accelerated the calcification when used alone (at 10 nM). Furthermore, MK-4 enhanced alkaline phosphatase (ALP) activity in HAVICs, and 7 days of MK-4 treatment markedly upregulated the gene expression of the calcification marker bone morphogenetic protein 2 (BMP2). Notably, MK-4-induced calcification was potently suppressed by two pregnane X receptor (PXR) inhibitors, ketoconazole and coumestrol; conversely, PXR activity was weakly increased, but in a statistically significant and dose-dependent manner, by MK-4. Lastly, in physiologic-Pi medium, MK-4 increased BMP2 gene expression and accelerated excess BMP2 (30 ng/ml)-induced HAVIC calcification. These results suggest that MK-4, namely vitamin K2, accelerates calcification of HAVICs from patients with AVS like WFN via PXR-BMP2-ALP pathway. SIGNIFICANCE STATEMENT: For aortic valve stenosis (AVS) induced by irreversible valve calcification, the most effective treatment is surgical aortic or transcatheter aortic valve replacement, but ∼20% of patients are deemed unsuitable because of its invasiveness. For effective drug treatment strategies for AVS, the mechanisms underlying aortic valve calcification must be elucidated. Here, we show that menaquinone-4 accelerates warfarin-induced calcification of AVS-patient human aortic valve interstitial cells in high inorganic phosphate medium; this effect is mediated by pregnane X receptor-bone morphogenetic protein 2-alkaline phosphatase signaling, which could be targeted for novel drug development.
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Affiliation(s)
- Wei Yang
- Departments of Thoracic and Cardiovascular Surgery (W.Y., Z.Y., M.C., X.L., K.D., I.F.), Vascular Biology (T.I., K.S.), and Pharmacology (S.M., K.-I.F.), Hirosaki University Graduate School Medicine, Hirosaki, Japan; and Institute of Molecular Function, Saitama, Japan (M.T.)
| | - Zaiqiang Yu
- Departments of Thoracic and Cardiovascular Surgery (W.Y., Z.Y., M.C., X.L., K.D., I.F.), Vascular Biology (T.I., K.S.), and Pharmacology (S.M., K.-I.F.), Hirosaki University Graduate School Medicine, Hirosaki, Japan; and Institute of Molecular Function, Saitama, Japan (M.T.)
| | - Mari Chiyoya
- Departments of Thoracic and Cardiovascular Surgery (W.Y., Z.Y., M.C., X.L., K.D., I.F.), Vascular Biology (T.I., K.S.), and Pharmacology (S.M., K.-I.F.), Hirosaki University Graduate School Medicine, Hirosaki, Japan; and Institute of Molecular Function, Saitama, Japan (M.T.)
| | - Xu Liu
- Departments of Thoracic and Cardiovascular Surgery (W.Y., Z.Y., M.C., X.L., K.D., I.F.), Vascular Biology (T.I., K.S.), and Pharmacology (S.M., K.-I.F.), Hirosaki University Graduate School Medicine, Hirosaki, Japan; and Institute of Molecular Function, Saitama, Japan (M.T.)
| | - Kazuyuki Daitoku
- Departments of Thoracic and Cardiovascular Surgery (W.Y., Z.Y., M.C., X.L., K.D., I.F.), Vascular Biology (T.I., K.S.), and Pharmacology (S.M., K.-I.F.), Hirosaki University Graduate School Medicine, Hirosaki, Japan; and Institute of Molecular Function, Saitama, Japan (M.T.)
| | - Shigeru Motomura
- Departments of Thoracic and Cardiovascular Surgery (W.Y., Z.Y., M.C., X.L., K.D., I.F.), Vascular Biology (T.I., K.S.), and Pharmacology (S.M., K.-I.F.), Hirosaki University Graduate School Medicine, Hirosaki, Japan; and Institute of Molecular Function, Saitama, Japan (M.T.)
| | - Tadaatsu Imaizumi
- Departments of Thoracic and Cardiovascular Surgery (W.Y., Z.Y., M.C., X.L., K.D., I.F.), Vascular Biology (T.I., K.S.), and Pharmacology (S.M., K.-I.F.), Hirosaki University Graduate School Medicine, Hirosaki, Japan; and Institute of Molecular Function, Saitama, Japan (M.T.)
| | - Ikuo Fukuda
- Departments of Thoracic and Cardiovascular Surgery (W.Y., Z.Y., M.C., X.L., K.D., I.F.), Vascular Biology (T.I., K.S.), and Pharmacology (S.M., K.-I.F.), Hirosaki University Graduate School Medicine, Hirosaki, Japan; and Institute of Molecular Function, Saitama, Japan (M.T.)
| | - Ken-Ichi Furukawa
- Departments of Thoracic and Cardiovascular Surgery (W.Y., Z.Y., M.C., X.L., K.D., I.F.), Vascular Biology (T.I., K.S.), and Pharmacology (S.M., K.-I.F.), Hirosaki University Graduate School Medicine, Hirosaki, Japan; and Institute of Molecular Function, Saitama, Japan (M.T.)
| | - Motonori Tsuji
- Departments of Thoracic and Cardiovascular Surgery (W.Y., Z.Y., M.C., X.L., K.D., I.F.), Vascular Biology (T.I., K.S.), and Pharmacology (S.M., K.-I.F.), Hirosaki University Graduate School Medicine, Hirosaki, Japan; and Institute of Molecular Function, Saitama, Japan (M.T.)
| | - Kazuhiko Seya
- Departments of Thoracic and Cardiovascular Surgery (W.Y., Z.Y., M.C., X.L., K.D., I.F.), Vascular Biology (T.I., K.S.), and Pharmacology (S.M., K.-I.F.), Hirosaki University Graduate School Medicine, Hirosaki, Japan; and Institute of Molecular Function, Saitama, Japan (M.T.)
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13
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Al-Shaalanb NH, Ali I, ALOthman ZA, Al-Wahaibi LH, Alabdulmonem H. Enantioselective degradation of dufulin pesticide in water: Uptake, thermodynamics, and kinetics studies. Chirality 2019; 31:1060-1069. [PMID: 31667897 DOI: 10.1002/chir.23150] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 10/16/2019] [Accepted: 10/17/2019] [Indexed: 11/07/2022]
Abstract
Kudzu (Pueraria thunbergiana) plant extract impregnated sediments were used for abiotic and biotic uptakes and biodegradation. The optimized conditions were 25 μg L-1 concentration, 7 days for abiotic uptake and 56 days for biotic uptake and biodegradation, dose 2 g L-1 , 7 pH, and 35°C temperature. The amount removed of dufulin was 32.6% in abiotic conditions while these were 90% in the case of biotic uptake and biodegradation. Enantioselective biodegradation indicated that S-(+)-enantiomer degraded faster (90%) than R-(-)-enantiomer (87%). The data for abiotic and biotic uptakes and biodegradation followed well Langmuir, thermodynamics, and kinetics models. All these processes followed pseudo first-order kinetics. It was observed that biodegradation was three times responsible for dufulin removal than simple sorption uptake (abiotic and biotic). The abiotic and biotic uptakes and biodegradation were quite fast and endothermic nature. The developed method may be used to remove the racemic and enantiomeric dufulin in water.
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Affiliation(s)
- Nora Hamad Al-Shaalanb
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Imran Ali
- Department of Chemistry, College of Sciences, Taibah University, Medina, Saudi Arabia.,Jamia Millia Islamia, New Delhi, India
| | - Zeid A ALOthman
- Department of Chemistry, College of Sciences, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Lamya Hamad Al-Wahaibi
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Hadeel Alabdulmonem
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
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14
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Yu Z, Seya K, Chiyoya M, Daitoku K, Motomura S, Imaizumi T, Fukuda I, Furukawa KI. Warfarin calcifies human aortic valve interstitial cells at high-phosphate conditions via pregnane X receptor. J Bone Miner Metab 2019; 37:944-956. [PMID: 30963258 DOI: 10.1007/s00774-019-01001-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 03/18/2019] [Indexed: 10/27/2022]
Abstract
Warfarin, a vitamin K antagonist, is the most common anticoagulant used to prevent thromboembolisms associated with atrial fibrillation or following valvular surgery. Although several studies have revealed that long-term warfarin use accelerates aortic valve calcification and the development of aortic stenosis (AS), the detailed mechanism for this phenomenon remains unclear. Therefore, our aim was twofold: to establish the conditions for warfarin-induced calcification of human aortic valve interstitial cells (HAVICs) using high-inorganic phosphate (Pi) conditions and to investigate the underlying mechanism. We prepared and cultured HAVICs from aortic valves affected by calcific aortic valve stenosis (AS group) and aortic valves affected by aortic regurgitation but without any signs of calcification (non-AS group). Under Pi concentrations of 3.2 mM, warfarin significantly increased the calcification and alkaline phosphatase (ALP) activity of AS but not non-AS group HAVICs. Furthermore, gene expression of bone morphogenetic protein 2 (BMP2), a calcigenic marker, was significantly increased following 7 days of warfarin treatment. Warfarin-induced calcification of AS group HAVICs at 3.2 mM Pi was significantly inhibited by dorsomorphin, a Smad inhibitor, and the pregnane X receptor (PXR) inhibitors, ketoconazole and coumestrol, but was unaffected by SN-50, an NF-κB inhibitor. Warfarin was also able to increase BMP2 gene expression at a physiological Pi concentration (1.0 mM). Furthermore, excess BMP2 (30 ng/mL) facilitated warfarin-induced ALP upregulation and HAVIC calcification, an effect which was significantly reduced in the presence of coumestrol. Together, our results suggest that warfarin accelerates calcification of HAVICs from AS patients via the PXR-BMP2-ALP pathway.
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Affiliation(s)
- Zaiqiang Yu
- Department of Thoracic and Cardiovascular Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Kazuhiko Seya
- Department of Vascular Biology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Mari Chiyoya
- Department of Thoracic and Cardiovascular Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Kazuyuki Daitoku
- Department of Thoracic and Cardiovascular Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Shigeru Motomura
- Department of Pharmacology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Tadaatsu Imaizumi
- Department of Vascular Biology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Ikuo Fukuda
- Department of Thoracic and Cardiovascular Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Ken-Ichi Furukawa
- Department of Pharmacology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan.
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15
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Granadeiro L, Dirks RP, Ortiz-Delgado JB, Gavaia PJ, Sarasquete C, Laizé V, Cancela ML, Fernández I. Warfarin-exposed zebrafish embryos resembles human warfarin embryopathy in a dose and developmental-time dependent manner - From molecular mechanisms to environmental concerns. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 181:559-571. [PMID: 31238190 DOI: 10.1016/j.ecoenv.2019.06.042] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 06/13/2019] [Accepted: 06/14/2019] [Indexed: 06/09/2023]
Abstract
Warfarin is the most worldwide used anticoagulant drug and rodenticide. Since it crosses placental barrier it can induce warfarin embryopathy (WE), a fetal mortality in neonates characterized by skeletal deformities in addition to brain hemorrhages. Although the effects of warfarin exposure in aquatic off target species were already described, the particular molecular toxicological mechanisms during early development are still unclear. Here, we used zebrafish (Danio rerio) to describe and compare the developmental effects of warfarin exposure (0, 15.13, 75.68 and 378.43 mM) on two distinct early developmental phases (embryos and eleuthero-embryos). Although exposure to both developmental phases induced fish mortality, only embryos exposed to the highest warfarin level exhibited features mimicking mammalian WE, e.g. high mortality, higher incidence of hemorrhages and altered skeletal development, among other effects. To gain insights into the toxic mechanisms underlying warfarin exposure, the transcriptome of embryos exposed to warfarin was explored through RNA-Seq and compared to that of control embryos. 766 differentially expressed (564 up- and 202 down-regulated) genes were identified. Gene Ontology analysis revealed particular cellular components (cytoplasm, extracellular matrix, lysosome and vacuole), biological processes (mainly amino acid and lipid metabolism and response to stimulus) and pathways (oxidative stress response and apoptosis signaling pathways) being significantly overrepresented in zebrafish embryos upon warfarin exposure. Protein-protein interaction further evidenced an altered redox system, blood coagulation and vasculogenesis, visual phototransduction and collagen formation upon warfarin exposure. The present study not only describes for the first time the WE in zebrafish, it provides new insights for a better risk assessment, and highlights the need for programming the rat eradication actions outside the fish spawning season to avoid an impact on off target fish community. The urge for the development of more species-specific anticoagulants for rodent pest control is also highlighted.
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Affiliation(s)
- Luis Granadeiro
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Ron P Dirks
- ZF-screens B.V. J.H. Oortweg 19, 2333, CH Leiden, the Netherlands
| | - Juan B Ortiz-Delgado
- Instituto de Ciencias Marinas de Andalucía-ICMAN/CSIC, Campus Universitario Río San Pedro, Apdo. Oficial, 11510, Puerto Real, Cádiz, Spain
| | - Paulo J Gavaia
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal; Departamento de Ciências Biomédicas e Medicina (DCBM), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Carmen Sarasquete
- Instituto de Ciencias Marinas de Andalucía-ICMAN/CSIC, Campus Universitario Río San Pedro, Apdo. Oficial, 11510, Puerto Real, Cádiz, Spain
| | - Vincent Laizé
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - M Leonor Cancela
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal; Departamento de Ciências Biomédicas e Medicina (DCBM), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal; Algarve Biomedical Center (ABC) and Centre for Biomedical Research (CBMR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Ignacio Fernández
- Centro de Ciências do Mar (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal; Center for Aquaculture Research, Agrarian Technological Institute of Castile and Leon, Ctra. Arévalo, S/n. 40196 Zamarramala, Segovia, Spain.
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16
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Dusek J, Skoda J, Holas O, Horvatova A, Smutny T, Linhartova L, Hirsova P, Kucera O, Micuda S, Braeuning A, Pavek P. Stilbene compound trans-3,4,5,4´-tetramethoxystilbene, a potential anticancer drug, regulates constitutive androstane receptor (Car) target genes, but does not possess proliferative activity in mouse liver. Toxicol Lett 2019; 313:1-10. [PMID: 31170421 DOI: 10.1016/j.toxlet.2019.05.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/21/2019] [Accepted: 05/29/2019] [Indexed: 01/06/2023]
Abstract
The constitutive androstane receptor(CAR) activation is connected with mitogenic effects leading to liver hyperplasia and tumorigenesis in rodents. CAR activators, including phenobarbital, are considered rodent non-genotoxic carcinogens. Recently, trans-3,4,5,4´-tetramethoxystilbene(TMS), a potential anticancer drug (DMU-212), have been shown to alleviate N-nitrosodiethylamine/phenobarbital-induced liver carcinogenesis. We studied whether TMS inhibits mouse Car to protect from the PB-induced tumorigenesis. Unexpectedly, we identified TMS as a murine CAR agonist in reporter gene experiments, in mouse hepatocytes, and in C57BL/6 mice in vivo. TMS up-regulated Car target genes Cyp2b10, Cyp2c29 and Cyp2c55 mRNAs, but down-regulated expression of genes involved in gluconeogenesis and lipogenesis. TMS did not change or down-regulate genes involved in liver proliferation or apoptosis such as Mki67, Foxm1, Myc, Mcl1, Pcna, Bcl2, or Mdm2, which were up-regulated by another Car ligand TCPOBOP. TMS did not increase liver weight and had no significant effect on Ki67 and Pcna labeling indices in mouse liver in vivo. In murine hepatic AML12 cells, we confirmed a Car-independent proapoptotic effect of TMS. We conclude that TMS is a Car ligand with limited effects on hepatocyte proliferation, likely due to promoting apoptosis in mouse hepatic cells, while controlling Car target genes involved in xenobiotic and endobiotic metabolism.
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Affiliation(s)
- Jan Dusek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, 500 05, Czech Republic
| | - Josef Skoda
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, 500 05, Czech Republic
| | - Ondrej Holas
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, 500 05, Czech Republic
| | - Alzbeta Horvatova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, 500 05, Czech Republic
| | - Tomas Smutny
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, 500 05, Czech Republic
| | - Lenka Linhartova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, 500 05, Czech Republic
| | - Petra Hirsova
- Division of Gastroenterology and Hepatology, Mayo Clinic, 200 First St. SW, Rochester, MN 55905, USA
| | - Otto Kucera
- Department of Physiology, Charles University, Faculty of Medicine in Hradec Kralove, Simkova 870, 500 03 Hradec Kralove, Czech Republic
| | - Stanislav Micuda
- Department of Pharmacology, Charles University, Faculty of Medicine in Hradec Kralove, Simkova 870, 500 03 Hradec Kralove, Czech Republic
| | - Albert Braeuning
- Department of Food Safety, German Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589, Berlin, Germany; Department of Toxicology, University of Tübingen, Wilhelmstr. 56, 72074, Tübingen, Germany
| | - Petr Pavek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, 500 05, Czech Republic.
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17
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Yang C, Zhou D, Shen Z, Wilson DM, Renner M, Miner JN, Girardet JL, Lee CA. Characterization of Stereoselective Metabolism, Inhibitory Effect on Uric Acid Uptake Transporters, and Pharmacokinetics of Lesinurad Atropisomers. Drug Metab Dispos 2018; 47:104-113. [PMID: 30442650 DOI: 10.1124/dmd.118.080549] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 11/02/2018] [Indexed: 11/22/2022] Open
Abstract
Lesinurad [Zurampic; 2-(5-bromo-4-(4-cyclopropylnaphthalen-1-yl)-4H-1,2,4-triazol-3-ylthio)], a selective inhibitor of uric acid reabsorption transporters approved for the treatment of gout, is a racemate of two atropisomers. The objective of this investigation was to evaluate the stereoselectivity of metabolism, the inhibitory potency on kidney uric acid reabsorption transporters (URAT1 and OAT4), and the clinical pharmacokinetics of the lesinurad atropisomers. Incubations with human liver microsomes (HLM), recombinant CYP2C9, and recombinant CYP3A4 were carried out to characterize the stereoselective formation of three metabolites: M3 (hydroxylation), M4 (a dihydrodiol metabolite), and M6 (S-dealkylation). The formation of M3 in HLM with atropisomer 1 was approximately twice as much as that with atropisomer 2, whereas formation of M4 with atropisomer 1 was 8- to 12-fold greater than that with atropisomer 2. There were no significant differences in the plasma protein binding among lesinurad and the atropisomers. Following oral administration of 400 mg lesinurad once daily for 14 days to healthy human volunteers, the systemic exposure (C max at steady state and area under the concentration-time curve from time zero to the time of dosing interval) of atropisomer 1 was approximately 30% lower than that of atropisomer 2, whereas renal clearance was similar. In vitro cell-based assays using HEK293 stable cells expressing URAT1 and OAT4 demonstrated that atropisomer 2 was approximately 4-fold more potent against URAT1 than atropisomer 1 and equally active against OAT4. In conclusion, lesinurad atropisomers showed stereoselectivity in clinical pharmacokinetics, metabolism, and inhibitory potency against URAT1.
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Affiliation(s)
- Chun Yang
- Preclinical and Clinical DMPK (C.Y., Z.S., C.A.L.), Bioanalytical (D.Z., D.M.W.), Biology (J.N.M.), and Chemistry (M.R., J.-L.G.) Departments, Ardea Biosciences, Inc., San Diego, California
| | - Dongmei Zhou
- Preclinical and Clinical DMPK (C.Y., Z.S., C.A.L.), Bioanalytical (D.Z., D.M.W.), Biology (J.N.M.), and Chemistry (M.R., J.-L.G.) Departments, Ardea Biosciences, Inc., San Diego, California
| | - Zancong Shen
- Preclinical and Clinical DMPK (C.Y., Z.S., C.A.L.), Bioanalytical (D.Z., D.M.W.), Biology (J.N.M.), and Chemistry (M.R., J.-L.G.) Departments, Ardea Biosciences, Inc., San Diego, California
| | - David M Wilson
- Preclinical and Clinical DMPK (C.Y., Z.S., C.A.L.), Bioanalytical (D.Z., D.M.W.), Biology (J.N.M.), and Chemistry (M.R., J.-L.G.) Departments, Ardea Biosciences, Inc., San Diego, California
| | - Matthew Renner
- Preclinical and Clinical DMPK (C.Y., Z.S., C.A.L.), Bioanalytical (D.Z., D.M.W.), Biology (J.N.M.), and Chemistry (M.R., J.-L.G.) Departments, Ardea Biosciences, Inc., San Diego, California
| | - Jeffrey N Miner
- Preclinical and Clinical DMPK (C.Y., Z.S., C.A.L.), Bioanalytical (D.Z., D.M.W.), Biology (J.N.M.), and Chemistry (M.R., J.-L.G.) Departments, Ardea Biosciences, Inc., San Diego, California
| | - Jean-Luc Girardet
- Preclinical and Clinical DMPK (C.Y., Z.S., C.A.L.), Bioanalytical (D.Z., D.M.W.), Biology (J.N.M.), and Chemistry (M.R., J.-L.G.) Departments, Ardea Biosciences, Inc., San Diego, California
| | - Caroline A Lee
- Preclinical and Clinical DMPK (C.Y., Z.S., C.A.L.), Bioanalytical (D.Z., D.M.W.), Biology (J.N.M.), and Chemistry (M.R., J.-L.G.) Departments, Ardea Biosciences, Inc., San Diego, California
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18
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Hyrsova L, Vanduchova A, Dusek J, Smutny T, Carazo A, Maresova V, Trejtnar F, Barta P, Anzenbacher P, Dvorak Z, Pavek P. Trans-resveratrol, but not other natural stilbenes occurring in food, carries the risk of drug-food interaction via inhibition of cytochrome P450 enzymes or interaction with xenosensor receptors. Toxicol Lett 2018; 300:81-91. [PMID: 30394306 DOI: 10.1016/j.toxlet.2018.10.028] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 09/03/2018] [Accepted: 10/08/2018] [Indexed: 01/27/2023]
Abstract
Resveratrol (RSV) is a stilbene phytochemical common in food and red wine. RSV inhibits cytochrome P450 CYP3A4 activity and interacts with the pregnane X receptor (PXR), the central regulator of drug/xenobiotic metabolizing enzyme expression. In this work, we comprehensively examined the effects of 13 stilbenes (trans- and cis-resveratrol, trans- and cis-piceatannol, oxyresveratrol, pterostilbene, pinostilbene, a,b-dihydroresveratrol, trans- and cis-trismethoxyresveratrol, trans-3,4,5,4'-tetramethoxystilbene, trans-2,4,3',5'-tetramethoxystilbene, trans-4-methoxystilbene), on CYP3A4 and CYP2B6 mRNA induction, and on CYP3A4/5, CYP2C8/9/19, CYP2D6, CYP2A6, CYP2E1, CYP1A2 and CYP2B6 cytochrome P450 enzyme activities. Expression experiments in five different primary human hepatocyte preparations, reporter gene assays, and ligand binding assays with pregnane X (PXR) and constitutive androstane (CAR) receptors were performed. Inhibition of cytochrome P450 enzymes was examined in human microsomes. We found that only polymethoxylated stilbenes are prone to significantly induce CYP2B6 or CYP3A4 in primary human hepatocytes via pregnane X receptor (PXR) interaction. Natural resveratrol derivatives such as trans- and cis-RSV, oxyresveratrol, pinostilbene and pterostilbene significantly inhibit CYP3A4/5 enzymatic activities; however, only trans-RSV significantly inhibits CYP3A4/5 activity (both testosterone 6β-hydroxylation and midazolam 1´-hydroxylation) in micromolar concentrations by a non-competitive mechanism, suggesting a potential risk of food-drug interactions with CYP3A4/5 substrates.
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Affiliation(s)
- Lucie Hyrsova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, CZ500 05, Czech Republic
| | - Alena Vanduchova
- Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 3, CZ775 15, Olomouc, Czech Republic; Institute of Molecular and Translational Medicine (IMTM), Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 3, CZ775 15, Olomouc, Czech Republic
| | - Jan Dusek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, CZ500 05, Czech Republic
| | - Tomas Smutny
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, CZ500 05, Czech Republic
| | - Alejandro Carazo
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, CZ500 05, Czech Republic; Institute of Molecular and Translational Medicine (IMTM), Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 3, CZ775 15, Olomouc, Czech Republic
| | - Veronika Maresova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, CZ500 05, Czech Republic
| | - Frantisek Trejtnar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, CZ500 05, Czech Republic
| | - Pavel Barta
- Department of Biophysics and Physical Chemistry, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, CZ500 05, Czech Republic
| | - Pavel Anzenbacher
- Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 3, CZ775 15, Olomouc, Czech Republic
| | - Zdenek Dvorak
- Department of Cellular Biology and Genetics, Faculty of Sciences, Palacky University in Olomouc, Slechtitelu 27, 783 71, Olomouc, Czech Republic
| | - Petr Pavek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Heyrovskeho 1203, Hradec Kralove, CZ500 05, Czech Republic.
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Carazo A, Dusek J, Holas O, Skoda J, Hyrsova L, Smutny T, Soukup T, Dosedel M, Pávek P. Teriflunomide Is an Indirect Human Constitutive Androstane Receptor (CAR) Activator Interacting With Epidermal Growth Factor (EGF) Signaling. Front Pharmacol 2018; 9:993. [PMID: 30364229 PMCID: PMC6193428 DOI: 10.3389/fphar.2018.00993] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 08/13/2018] [Indexed: 01/19/2023] Open
Abstract
The constitutive androstane receptor (CAR) is a nuclear receptor involved mainly in xenobiotic and endobiotic metabolism regulation. CAR is activated directly by its ligands via the ligand binding domain (LBD) or indirectly by inhibition of the epidermal growth factor (EGF) signaling. We found that leflunomide (LEF) and its main metabolite teriflunomide (TER), both used for autoimmune diseases treatment, induce the prototype CAR target gene CYP2B6 in primary human hepatocytes. As TER was discovered to be an EGF receptor antagonist, we sought to determine if TER is an indirect activator of CAR. In primary human hepatocytes and in differentiated HepaRG cells, we found that LEF and TER up-regulate CAR target genes CYP2B6 and CYP3A4 mRNAs and enzymatic activities. TER stimulated CAR+A mutant translocation into the nucleus but neither LEF nor TER activated the CAR LBD, CAR3 variant or pregnane X receptor (PXR) in gene reporter assays. Interestingly, TER significantly up-regulated CAR mRNA expression, a result which could be a consequence of both EGF receptor and ELK-1 transcription factor inhibition by TER or by TER-mediated activation of glucocorticoid receptor (GR), an upstream hormonal regulator of CAR. We can conclude that TER is a novel indirect CAR activator which through EGF inhibition and GR activation controls both detoxification and some intermediary metabolism genes.
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Affiliation(s)
- Alejandro Carazo
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Prague, Czechia.,Faculty of Medicine and Dentistry, Institute of Molecular and Translational Medicine, Palacky University, Olomouc, Czechia
| | - Jan Dusek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Prague, Czechia
| | - Ondrej Holas
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Charles University, Prague, Czechia
| | - Josef Skoda
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Prague, Czechia
| | - Lucie Hyrsova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Prague, Czechia
| | - Tomas Smutny
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Prague, Czechia
| | - Tomas Soukup
- Division of Rheumatology, 2nd Department of Internal Medicine - Gastroenterology, Faculty of Medicine, University Hospital in Hradec Kralove, Charles University, Prague, Czechia
| | - Martin Dosedel
- Department of Social and Clinical Pharmacy, Faculty of Pharmacy, Charles University, Prague, Czechia
| | - Petr Pávek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Prague, Czechia
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20
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Dovrtelova G, Zendulka O, Noskova K, Jurica J, Pes O, Dusek J, Carazo A, Zapletalova I, Hlavacova N, Pavek P. Effect of Endocannabinoid Oleamide on Rat and Human Liver Cytochrome P450 Enzymes in In Vitro and In Vivo Models. Drug Metab Dispos 2018; 46:913-923. [PMID: 29650790 DOI: 10.1124/dmd.117.079582] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 04/04/2018] [Indexed: 11/22/2022] Open
Abstract
The endocannabinoid system is important for many physiologic and pathologic processes, but its role in the regulation of liver cytochromes P450 (P450s) remains unknown. We studied the influence of the endocannabinoid oleamide on rat and human liver P450s. Oleamide was administered intraperitoneally to rats at doses of 0.1, 1, and 10 mg/kg per day for 7 days. The content and activity of key P450s were evaluated in rat liver microsomes. Moreover, interactions with nuclear receptors regulating P450 genes and serum levels of their ligands (prolactin, corticosterone, and free triiodothyronine) were tested in in vitro P450 inhibition assays. Decreased protein levels and metabolic activities of CYP1A2, CYP2B, and CYP2C11, along with a drop in metabolic activity of CYP2D2, were observed in animals treated with oleamide (10 mg/kg per day). The activities of CYP2C6, CYP2A, and CYP3A and the levels of hormones were not altered. In vitro, oleamide exhibited a weak inhibition of rat CYP1A2, CYP2D2, and CYP2C6. The activities of rat CYP2A, CYP2B, CYP2C11, and CYP3A and human CYP1A2, CYP2B6, CYP2C9, and CYP3A4 were not altered. Oleamide did not interact with human pregnane X, constitutive androstane, or aryl hydrocarbon receptors in reporter gene experiments and did not regulate their target P450 genes in primary human hepatocytes. Our results indicate that oleamide caused the downregulation of some rat liver P450s, and hormones are not mediators of this effect. In vitro oleamide inhibits mainly rat CYP2C6 and is neither an agonist nor antagonist of major human nuclear receptors involved in the regulation of xenobiotic metabolism.
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Affiliation(s)
- Gabriela Dovrtelova
- Departments of Pharmacology (G.D., O.Z., K.N, J.J.) and Biochemistry (O.P.), Faculty of Medicine, Masaryk University, Brno, Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Hradec Kralove (J.D., A.C., P.P.), and Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc (I.Z.), Czech Republic; and Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovak Republic (N.H.)
| | - Ondrej Zendulka
- Departments of Pharmacology (G.D., O.Z., K.N, J.J.) and Biochemistry (O.P.), Faculty of Medicine, Masaryk University, Brno, Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Hradec Kralove (J.D., A.C., P.P.), and Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc (I.Z.), Czech Republic; and Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovak Republic (N.H.)
| | - Kristyna Noskova
- Departments of Pharmacology (G.D., O.Z., K.N, J.J.) and Biochemistry (O.P.), Faculty of Medicine, Masaryk University, Brno, Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Hradec Kralove (J.D., A.C., P.P.), and Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc (I.Z.), Czech Republic; and Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovak Republic (N.H.)
| | - Jan Jurica
- Departments of Pharmacology (G.D., O.Z., K.N, J.J.) and Biochemistry (O.P.), Faculty of Medicine, Masaryk University, Brno, Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Hradec Kralove (J.D., A.C., P.P.), and Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc (I.Z.), Czech Republic; and Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovak Republic (N.H.)
| | - Ondrej Pes
- Departments of Pharmacology (G.D., O.Z., K.N, J.J.) and Biochemistry (O.P.), Faculty of Medicine, Masaryk University, Brno, Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Hradec Kralove (J.D., A.C., P.P.), and Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc (I.Z.), Czech Republic; and Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovak Republic (N.H.)
| | - Jan Dusek
- Departments of Pharmacology (G.D., O.Z., K.N, J.J.) and Biochemistry (O.P.), Faculty of Medicine, Masaryk University, Brno, Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Hradec Kralove (J.D., A.C., P.P.), and Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc (I.Z.), Czech Republic; and Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovak Republic (N.H.)
| | - Alejandro Carazo
- Departments of Pharmacology (G.D., O.Z., K.N, J.J.) and Biochemistry (O.P.), Faculty of Medicine, Masaryk University, Brno, Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Hradec Kralove (J.D., A.C., P.P.), and Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc (I.Z.), Czech Republic; and Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovak Republic (N.H.)
| | - Iveta Zapletalova
- Departments of Pharmacology (G.D., O.Z., K.N, J.J.) and Biochemistry (O.P.), Faculty of Medicine, Masaryk University, Brno, Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Hradec Kralove (J.D., A.C., P.P.), and Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc (I.Z.), Czech Republic; and Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovak Republic (N.H.)
| | - Natasa Hlavacova
- Departments of Pharmacology (G.D., O.Z., K.N, J.J.) and Biochemistry (O.P.), Faculty of Medicine, Masaryk University, Brno, Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Hradec Kralove (J.D., A.C., P.P.), and Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc (I.Z.), Czech Republic; and Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovak Republic (N.H.)
| | - Petr Pavek
- Departments of Pharmacology (G.D., O.Z., K.N, J.J.) and Biochemistry (O.P.), Faculty of Medicine, Masaryk University, Brno, Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Hradec Kralove (J.D., A.C., P.P.), and Department of Pharmacology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Olomouc (I.Z.), Czech Republic; and Institute of Experimental Endocrinology, Biomedical Research Center, Slovak Academy of Sciences, Bratislava, Slovak Republic (N.H.)
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Narayanan B, Lade JM, Heck CJ, Dietz KD, Wade H, Bumpus NN. Probing Ligand Structure-Activity Relationships in Pregnane X Receptor (PXR): Efavirenz and 8-Hydroxyefavirenz Exhibit Divergence in Activation. ChemMedChem 2018; 13:736-747. [PMID: 29430850 PMCID: PMC6081956 DOI: 10.1002/cmdc.201700730] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 02/06/2018] [Indexed: 12/24/2022]
Abstract
Efavirenz (EFV), an antiretroviral that interacts clinically with co-administered drugs via activation of the pregnane X receptor (PXR), is extensively metabolized by the cytochromes P450. We tested whether its primary metabolite, 8-hydroxyEFV (8-OHEFV) can activate PXR and potentially contribute to PXR-mediated drug-drug interactions attributed to EFV. Luciferase reporter assays revealed that despite only differing from EFV by an oxygen atom, 8-OHEFV does not activate PXR. Corroborating this, treatment with EFV for 72 h elevated the mRNA abundance of the PXR target gene, Cyp3a11, by approximately 28-fold in primary hepatocytes isolated from PXR-humanized mice, whereas treatment with 8-OHEFV did not result in a change in Cyp3A11 mRNA levels. FRET-based competitive binding assays and isothermal calorimetry demonstrated that even with the lack of ability to activate PXR, 8-OHEFV displays an affinity for PXR (IC50 12.1 μm; KD 7.9 μm) nearly identical to that of EFV (IC50 18.7 μm; KD 12.5 μm). The use of 16 EFV analogues suggest that other discreet changes to the EFV structure beyond the 8-position are well tolerated. Molecular docking simulations implicate an 8-OHEFV binding mode that may underlie its divergence in PXR activation from EFV.
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Affiliation(s)
- Bhargavi Narayanan
- Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, 725 N Wolfe Street Hunterian 709 Baltimore, MD, USA
| | - Julie M. Lade
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, 725 N Wolfe St Biophysics 307 Baltimore, MD, USA
| | - Carley J.S. Heck
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, 725 N Wolfe St Biophysics 307 Baltimore, MD, USA
| | - Kevin D. Dietz
- Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, 725 N Wolfe Street Hunterian 709 Baltimore, MD, USA
| | - Herschel Wade
- Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, 725 N Wolfe Street Hunterian 709 Baltimore, MD, USA
| | - Namandjé N. Bumpus
- Department of Medicine, Division of Clinical Pharmacology, Johns Hopkins University School of Medicine, 725 N Wolfe St Biophysics 307 Baltimore, MD, USA
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7-Hydroxylation of warfarin is strongly inhibited by sesamin, but not by episesamin, caffeic and ferulic acids in human hepatic microsomes. Food Chem Toxicol 2018; 113:14-18. [PMID: 29353070 DOI: 10.1016/j.fct.2018.01.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Revised: 01/09/2018] [Accepted: 01/12/2018] [Indexed: 02/05/2023]
Abstract
Warfarin is a commonly used anticoagulant drug and is a derivate of coumarin. Cytochrome P450 2C9 (CYP2C9) plays the key role in transformation of coumarin and thus, influences determination of warfarin dosage. A number of factors including dietary compounds such as sesamin, caffeic acid and ferulic acids can regulate the activity of CYP2C9. The present study tested the hypothesis that sesamin, episesamin, caffeic acid and ferulic acid decreases the rate of warfarin 7-hydroxylation via inhibition of hepatic CYP2C9. The experiments were conducted on hepatic microsomes from human donors. It was demonstrated that the rate of 7-hydroxylation of warfarin was significantly decreased in the presence of sesamin in the range of concentrations from 5 to 500 nM, and was not affected by episesamin, caffeic acid and ferulic acid in the same range of concentrations. The kinetic analysis indicated non-competitive type of inhibition by sesamin with Ki = 202 ± 18 nM. In conclusion, the results of our in vitro study revealed that sesamin was able to inhibit formation of a major metabolite of warfarin, 7-hydroxywarfarin. The potentially negative consequences of the consumption of high amounts of sesamin-containing food or dietary supplements in warfarin-treated patients need to be further studied.
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Fernández I, Gavaia PJ, Laizé V, Cancela ML. Fish as a model to assess chemical toxicity in bone. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2018; 194:208-226. [PMID: 29202272 DOI: 10.1016/j.aquatox.2017.11.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 11/14/2017] [Accepted: 11/22/2017] [Indexed: 06/07/2023]
Abstract
Environmental toxicology has been expanding as growing concerns on the impact of produced and released chemical compounds over the environment and human health are being demonstrated. Among the toxic effects observed in organisms exposed to pollutants, those affecting skeletal tissues (osteotoxicity) have been somehow overlooked in comparison to hepato-, immune-, neuro- and/or reproductive toxicities. Nevertheless, sub-lethal effects of toxicants on skeletal development and/or bone maintenance may result in impaired growth, reduced survival rate, increased disease susceptibility and diminished welfare. Osteotoxicity may occur by acute or chronic exposure to different environmental insults. Because of biologically and technically advantagous features - easy to breed and inexpensive to maintain, external and rapid rate of development, translucent larvae and the availability of molecular and genetic tools - the zebrafish (Danio rerio) has emerged in the last decade as a vertebrate model system of choice to evaluate osteotoxicity. Different experimental approaches in fish species and analytical tools have been applied, from in vitro to in vivo systems, from specific to high throughput methodologies. Current knowledge on osteotoxicity and underlying mechanisms gained using fish, with a special emphasis on zebrafish systems, is reviewed here. Osteotoxicants have been classified into four categories according to the pathway involved in the transduction of the osteotoxic effects: activation/inhibition of membrane and/or nuclear receptors, alteration of redox condition, mimicking of bone constituents and unknown pathways. Knowledge on these pathways is also reported here as it may provide critical insights into the development, production and release of future chemical compounds with none or low osteotoxicity, thus promoting the green/environmental friendly chemistry.
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Affiliation(s)
- Ignacio Fernández
- Centre of Marine Sciences (CCMAR), University of Algarve, Campus de Gambelas, Faro, Portugal.
| | - Paulo J Gavaia
- Centre of Marine Sciences (CCMAR), University of Algarve, Campus de Gambelas, Faro, Portugal; Department of Biomedical Sciences and Medicine, University of Algarve, Campus de Gambelas, Faro, Portugal
| | - Vincent Laizé
- Centre of Marine Sciences (CCMAR), University of Algarve, Campus de Gambelas, Faro, Portugal
| | - M Leonor Cancela
- Centre of Marine Sciences (CCMAR), University of Algarve, Campus de Gambelas, Faro, Portugal; Department of Biomedical Sciences and Medicine, University of Algarve, Campus de Gambelas, Faro, Portugal; Algarve Biomedical Center (ABC), Universidade do Algarve, Campus de Gambelas, Faro, Portugal
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24
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Pandey AV, Henderson CJ, Ishii Y, Kranendonk M, Backes WL, Zanger UM. Editorial: Role of Protein-Protein Interactions in Metabolism: Genetics, Structure, Function. Front Pharmacol 2017; 8:881. [PMID: 29230176 PMCID: PMC5712015 DOI: 10.3389/fphar.2017.00881] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 11/14/2017] [Indexed: 11/23/2022] Open
Affiliation(s)
- Amit V. Pandey
- Pediatric Endocrinology, Diabetology and Metabolism, University Children's Hospital Bern, Bern, Switzerland
- Department of Biomedical Research, University of Bern, Bern, Switzerland
| | - Colin J. Henderson
- Division of Cancer Research, Jacqui Wood Cancer Centre, School of Medicine, University of Dundee, Dundee, United Kingdom
| | - Yuji Ishii
- Laboratory of Molecular Life Sciences, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Michel Kranendonk
- Center for Toxicogenomics and Human Health (ToxOmics), Genetics, Oncology and Human Toxicology, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Wayne L. Backes
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center New Orleans, New Orleans, LA, United States
| | - Ulrich M. Zanger
- Department of Molecular and Cell Biology, Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, Germany
- Eberhard Karls University of Tübingen, Tübingen, Germany
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Dusek J, Carazo A, Trejtnar F, Hyrsova L, Holas O, Smutny T, Micuda S, Pavek P. Steviol, an aglycone of steviol glycoside sweeteners, interacts with the pregnane X (PXR) and aryl hydrocarbon (AHR) receptors in detoxification regulation. Food Chem Toxicol 2017; 109:130-142. [DOI: 10.1016/j.fct.2017.09.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 08/20/2017] [Accepted: 09/01/2017] [Indexed: 01/01/2023]
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26
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Prasnicka A, Cermanova J, Hroch M, Dolezelova E, Rozkydalova L, Smutny T, Carazo A, Chladek J, Lenicek M, Nachtigal P, Vitek L, Pavek P, Micuda S. Iron depletion induces hepatic secretion of biliary lipids and glutathione in rats. Biochim Biophys Acta Mol Cell Biol Lipids 2017; 1862:1469-1480. [PMID: 28888833 DOI: 10.1016/j.bbalip.2017.09.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 08/16/2017] [Accepted: 09/05/2017] [Indexed: 12/14/2022]
Abstract
Iron depletion (ID) has been shown to induce the liver expression of Cyp7a1, the rate-limiting enzyme initiating conversion of cholesterol to bile acids (BA), although the effect on bile acids metabolism and bile production is unknown. Therefore, we investigated changes in bile secretion and BA synthesis during diet-induced iron depletion (ID) in rats. ID increased bile flow along with augmented biliary excretion of bile acids, glutathione, cholesterol and phospholipids. Accordingly, we found transcriptional upregulation of the Cyp7a1, Cyp8b1, and Cyp27a1 BA synthetic enzymes, as well as induction of the Abcg5/8 cholesterol transporters in ID rat livers. In contrast, intravenous infusion of 3H-taurocholate failed to elicit any difference in biliary secretion of this compound in the ID rats. This corresponded with unchanged expression of canalicular rate-limiting transporters for BA as well as glutathione. We also observed that ID substantially changed the spectrum of BA in bile and decreased plasma concentrations of BA and cholesterol. Experiments with differentiated human hepatic HepaRG cells confirmed human CYP7A1 orthologue upregulation resulting from reduced iron concentrations. Results employing a luciferase reporter gene assay suggest that the transcriptional activation of the CYP7A1 promoter under ID conditions works independent of farnesoid X (FXR), pregnane X (PXR) and liver X (LXRα) receptors activation. It can be concluded that this study characterizes the molecular mechanisms of modified bile production as well as cholesterol as along with BA homeostasis during ID. We propose complex upregulation of BA synthesis, and biliary cholesterol secretion as the key factors affected by ID.
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Affiliation(s)
- Alena Prasnicka
- Department of Pharmacology, Charles University, Faculty of Medicine in Hradec Kralove, Czech Republic
| | - Jolana Cermanova
- Department of Pharmacology, Charles University, Faculty of Medicine in Hradec Kralove, Czech Republic
| | - Milos Hroch
- Department of Medical Biochemistry, Charles University, Faculty of Medicine in Hradec Kralove, Czech Republic
| | - Eva Dolezelova
- Department of Biological and Medical Sciences, Charles University, Faculty of Pharmacy in Hradec Kralove, Czech Republic
| | - Lucie Rozkydalova
- Department of Pharmacology, Charles University, Faculty of Medicine in Hradec Kralove, Czech Republic; Department of Pharmacology and Toxicology, Charles University, Faculty of Pharmacy in Hradec Kralove, Czech Republic
| | - Tomas Smutny
- Department of Pharmacology and Toxicology, Charles University, Faculty of Pharmacy in Hradec Kralove, Czech Republic
| | - Alejandro Carazo
- Department of Pharmacology and Toxicology, Charles University, Faculty of Pharmacy in Hradec Kralove, Czech Republic
| | - Jaroslav Chladek
- Department of Pharmacology, Charles University, Faculty of Medicine in Hradec Kralove, Czech Republic
| | - Martin Lenicek
- Department of Medical Biochemistry and Laboratory Diagnostics, Charles University, 1st Faculty of Medicine, Prague, Czech Republic
| | - Petr Nachtigal
- Department of Biological and Medical Sciences, Charles University, Faculty of Pharmacy in Hradec Kralove, Czech Republic
| | - Libor Vitek
- Department of Medical Biochemistry and Laboratory Diagnostics, Charles University, 1st Faculty of Medicine, Prague, Czech Republic; 4th Department of Internal Medicine, 1st Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Petr Pavek
- Department of Pharmacology and Toxicology, Charles University, Faculty of Pharmacy in Hradec Kralove, Czech Republic
| | - Stanislav Micuda
- Department of Pharmacology, Charles University, Faculty of Medicine in Hradec Kralove, Czech Republic.
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Marques C, Roberto VP, Granadeiro L, Trindade M, Gavaia PJ, Laizé V, Cancela ML, Fernández I. The xenobiotic sensor PXR in a marine flatfish species (Solea senegalensis): Gene expression patterns and its regulation under different physiological conditions. MARINE ENVIRONMENTAL RESEARCH 2017; 130:187-199. [PMID: 28768576 DOI: 10.1016/j.marenvres.2017.07.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 06/06/2017] [Accepted: 07/21/2017] [Indexed: 06/07/2023]
Abstract
The pregnane X receptor (PXR) is a nuclear receptor belonging to the NR1I sub-family and a known master regulator of xenobiotic metabolism. New roles have been recently proposed in mammals through its activation by vitamin K (VK) such as regulation of glucose metabolism, bone homeostasis, reproduction, neuronal development and cognitive capacities. In marine fish species little is known about PXR and its potential roles. Here, expression patterns of pxr transcripts and conservation of protein domains were determined in the Senegalese sole (Solea senegalensis), a marine flatfish model species in aquatic ecotoxicology. In addition to a full coding sequence transcript (sspxr1), two variants lacking DNA and/or ligand binding domains (sspxr2 and sspxr3) were also identified. The expression of sspxr1 during early development and in adult tissues was ubiquitous, but highest levels were observed in liver, intestine and skin. Expression was also detected by in situ hybridization in chondrocytes and cells from the granular and inner nuclear layers in three month old fish. Finally, sspxr1 expression was shown to be differentially regulated under physiological conditions related with fasting, VK and warfarin metabolism. The present work provides new and basic knowledge regarding pxr sequence and expression patterns in a marine flatfish species to unveil the potential impact of xenobiotics on marine fish physiology, and will allow a better and more ecosystemic environmental risk assessment of different pollutants over the marine environments with the development of reporter assays using PXR sequences from evolutionary distantly marine species (such as vertebrate and invertebrate marine species).
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Affiliation(s)
- Carlos Marques
- Centro de Ciências do Mar do Algarve (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Vânia P Roberto
- Centro de Ciências do Mar do Algarve (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Luís Granadeiro
- Centro de Ciências do Mar do Algarve (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Marlene Trindade
- Centro de Ciências do Mar do Algarve (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Paulo J Gavaia
- Centro de Ciências do Mar do Algarve (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal; Departamento de Ciências Biomédicas e Medicina (DCBM), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Vincent Laizé
- Centro de Ciências do Mar do Algarve (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - M Leonor Cancela
- Centro de Ciências do Mar do Algarve (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal; Departamento de Ciências Biomédicas e Medicina (DCBM), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal; Algarve Biomedical Center (ABC), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Ignacio Fernández
- Centro de Ciências do Mar do Algarve (CCMAR), Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal.
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Pavek P. Pregnane X Receptor (PXR)-Mediated Gene Repression and Cross-Talk of PXR with Other Nuclear Receptors via Coactivator Interactions. Front Pharmacol 2016; 7:456. [PMID: 27932985 PMCID: PMC5122737 DOI: 10.3389/fphar.2016.00456] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 11/14/2016] [Indexed: 12/13/2022] Open
Abstract
Pregnane X receptor is a ligand-activated nuclear receptor (NR) that mainly controls inducible expression of xenobiotics handling genes including biotransformation enzymes and drug transporters. Nowadays it is clear that PXR is also involved in regulation of intermediate metabolism through trans-activation and trans-repression of genes controlling glucose, lipid, cholesterol, bile acid, and bilirubin homeostasis. In these processes PXR cross-talks with other NRs. Accumulating evidence suggests that the cross-talk is often mediated by competing for common coactivators or by disruption of coactivation and activity of other transcription factors by the ligand-activated PXR. In this respect mainly PXR-CAR and PXR-HNF4α interference have been reported and several cytochrome P450 enzymes (such as CYP7A1 and CYP8B1), phase II enzymes (SULT1E1, Gsta2, Ugt1a1), drug and endobiotic transporters (OCT1, Mrp2, Mrp3, Oatp1a, and Oatp4) as well as intermediate metabolism enzymes (PEPCK1 and G6Pase) have been shown as down-regulated genes after PXR activation. In this review, I summarize our current knowledge of PXR-mediated repression and coactivation interference in PXR-controlled gene expression regulation.
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Affiliation(s)
- Petr Pavek
- Department of Pharmacology and Toxicology and Centre for Drug Development, Faculty of Pharmacy in Hradec Kralove, Charles University in Prague Hradec Kralove, Czechia
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Carazo A, Hyrsova L, Dusek J, Chodounska H, Horvatova A, Berka K, Bazgier V, Gan-Schreier H, Chamulitrat W, Kudova E, Pavek P. Acetylated deoxycholic (DCA) and cholic (CA) acids are potent ligands of pregnane X (PXR) receptor. Toxicol Lett 2016; 265:86-96. [PMID: 27871908 DOI: 10.1016/j.toxlet.2016.11.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 11/10/2016] [Accepted: 11/15/2016] [Indexed: 12/11/2022]
Abstract
The Pregnane X (PXR), Vitamin D (VDR) and Farnesoid X (FXR) nuclear receptors have been shown to be receptors of bile acids controlling their detoxification or synthesis. Chenodeoxycholic (CDCA) and lithocholic (LCA) acids are ligands of FXR and VDR, respectively, whereas 3-keto and acetylated derivates of LCA have been described as ligands for all three receptors. In this study, we hypothesized that oxidation or acetylation at position 3, 7 and 12 of bile acids DCA (deoxycholic acid), LCA, CA (cholic acid), and CDCA by detoxification enzymes or microbiome may have an effect on the interactions with bile acid nuclear receptors. We employed reporter gene assays in HepG2 cells, the TR-FRET assay with recombinant PXR and RT-PCR to study the effects of acetylated and keto bile acids on the nuclear receptors activation and their target gene expression in differentiated hepatic HepaRG cells. We demonstrate that the DCA 3,12-diacetate and CA 3,7,12-triacetate derivatives are ligands of PXR and DCA 3,12-diacetate induces PXR target genes such as CYP3A4, CYP2B6 and ABCB1/MDR1. In conclusion, we found that acetylated DCA and CA are potent ligands of PXR. Whether the acetylated bile acid derivatives are novel endogenous ligands of PXR with detoxification or physiological functions should be further studied in ongoing experiments.
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Affiliation(s)
- Alejandro Carazo
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, Hradec Kralove CZ500 05, Czechia
| | - Lucie Hyrsova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, Hradec Kralove CZ500 05, Czechia
| | - Jan Dusek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, Hradec Kralove CZ500 05, Czechia
| | - Hana Chodounska
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, CZ160 00 Praha, Czechia
| | - Alzbeta Horvatova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, Hradec Kralove CZ500 05, Czechia
| | - Karel Berka
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Palacky University in Olomouc, 17. listopadu 1131, Olomouc CZ779 00, Czechia
| | - Vaclav Bazgier
- Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Palacky University in Olomouc, 17. listopadu 1131, Olomouc CZ779 00, Czechia
| | - Hongying Gan-Schreier
- Department of Internal Medicine IV, Gastroenterology and Infectious Diseases, Im Neuenheimer Feld, Heidelberg, Germany
| | - Waleé Chamulitrat
- Department of Internal Medicine IV, Gastroenterology and Infectious Diseases, Im Neuenheimer Feld, Heidelberg, Germany
| | - Eva Kudova
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo náměstí 2, CZ160 00 Praha, Czechia
| | - Petr Pavek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, Hradec Kralove CZ500 05, Czechia.
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Smutny T, Nova A, Drechslerová M, Carazo A, Hyrsova L, Hrušková ZR, Kuneš J, Pour M, Špulák M, Pavek P. 2-(3-Methoxyphenyl)quinazoline Derivatives: A New Class of Direct Constitutive Androstane Receptor (CAR) Agonists. J Med Chem 2016; 59:4601-10. [PMID: 27145071 DOI: 10.1021/acs.jmedchem.5b01891] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Constitutive androstane receptor (CAR) is a key regulator of xenobiotic and endobiotic metabolism. Together with pregnane X (PXR) and aryl hydrocarbon (AHR) receptors, it is referred to as "xenobiotic receptor". The unique properties of human CAR, such as its high constitutive activity, both direct (ligand-binding domain-dependent) and indirect activation have hindered the discovery of direct selective human CAR ligands. Herein, we report a novel class of direct human CAR agonists in a group of 2-(3-methoxyphenyl)quinazoline derivatives. The compounds are even more potent activators of human CAR than is prototype 6-(4-chlorophenyl)imidazo[2,1-b][1,3]thiazole-5-carbaldehyde O-(3,4-dichlorobenzyl)oxime (CITCO). The three most potent ligands are at the same time extremely potent activators of the other xenobiotic or hormonal receptors, namely PXR, AHR, and vitamin D receptor, which regulate major xenobiotic-metabolizing enzymes and efflux transporters. Thus, the novel CAR ligands can be also considered as constituting the first class of potent pan-xenobiotic receptor ligands that can serve as potential antidotes boosting overall metabolic elimination of xenobiotic or toxic compounds.
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Affiliation(s)
| | - Alice Nova
- Institute of Molecular and Translation Medicine, Faculty of Medicine, Palacky University in Olomouc , Hnevotinska 5, CZ-779 00 Olomouc, Czech Republic
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31
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Korhonova M, Doricakova A, Dvorak Z. Optical Isomers of Atorvastatin, Rosuvastatin and Fluvastatin Enantiospecifically Activate Pregnane X Receptor PXR and Induce CYP2A6, CYP2B6 and CYP3A4 in Human Hepatocytes. PLoS One 2015; 10:e0137720. [PMID: 26366873 PMCID: PMC4569258 DOI: 10.1371/journal.pone.0137720] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 08/20/2015] [Indexed: 11/21/2022] Open
Abstract
Atorvastatin, fluvastatin and rosuvastatin are drugs used for treatment of hypercholesterolemia. They cause numerous drug-drug interactions by inhibiting and inducing drug-metabolizing cytochromes P450. These three statins exist in four optical forms, but they are currently used as enantiopure drugs, i.e., only one single enantiomer. There are numerous evidences that efficacy, adverse effects and toxicity of drugs may be enantiospecific. Therefore, we investigated the effects of optical isomers of atorvastatin, fluvastatin and rosuvastatin on the expression of drug-metabolizing P450s in primary human hepatocytes, using western blots and RT-PCR for measurement of proteins and mRNAs, respectively. The activity of P450 transcriptional regulators, including pregnane X receptor (PXR), aryl hydrocarbon receptor (AhR) and glucocorticoid receptor (GR), was assessed by gene reporter assays and EMSA. Transcriptional activity of AhR was not influenced by any statin tested. Basal transcriptional activity of GR was not affected by tested statins, but dexamethasone-inducible activity of GR was dose-dependently and enantioselectively inhibited by fluvastatin. Basal and ligand-inducible transcriptional activity of PXR was dose-dependently influenced by all tested statins, and the potency and efficacy between individual optical isomers varied depending on statin and optical isomer. The expression of CYP1A1 and CYP1A2 in human hepatocytes was not influenced by tested statins. All statins induced CYP2A6, CYP2B6 and CYP3A4, and the effects on CYP2C9 were rather modulatory. The effects varied between statins and enantiomers and induction potency decreased in order: atorvastatin (RR>RS = SR>SS) > fluvastatin (SR>RS = SS>RR) >> rosuvastatin (only RS active). The data presented here might be of toxicological and clinical importance.
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Affiliation(s)
- Martina Korhonova
- Department of Cell Biology and Genetics, Faculty of Science, Palacky University, Slechtitelu 27, 783 71, Olomouc, Czech Republic
| | - Aneta Doricakova
- Department of Cell Biology and Genetics, Faculty of Science, Palacky University, Slechtitelu 27, 783 71, Olomouc, Czech Republic
| | - Zdenek Dvorak
- Department of Cell Biology and Genetics, Faculty of Science, Palacky University, Slechtitelu 27, 783 71, Olomouc, Czech Republic
- * E-mail:
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Fernández I, Santos A, Cancela ML, Laizé V, Gavaia PJ. Warfarin, a potential pollutant in aquatic environment acting through Pxr signaling pathway and γ-glutamyl carboxylation of vitamin K-dependent proteins. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2014; 194:86-95. [PMID: 25094061 DOI: 10.1016/j.envpol.2014.07.015] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 07/04/2014] [Accepted: 07/10/2014] [Indexed: 06/03/2023]
Abstract
Warfarin-induced vitamin K (VK) recycling impairment is used worldwide as a rodenticide and human thromboembolic prophylactic. Since VK metabolism/signaling pathways have been conserved throughout vertebrate evolution, its release to the environment might impact on aquatic organisms. Present study assessed the toxic effect of warfarin (0, 5, 25 and 125 mg L(-1)) on zebrafish development and characterized underlying mechanisms of action through qPCR analysis of VK-related genes. Expression of pregnane X receptor (pxr), the nuclear receptor binding vitamin K, was ubiquitous in zebrafish and suggests that warfarin exposure may interfere with several biological processes. Indeed, warfarin exposure of zebrafish larvae caused hemorrhages in brain, skeletal deformities and triggered ectopic calcifications, which may be the consequence of an altered γ-carboxylation of VK-dependent proteins and/or pxr signaling. This study provides new insights into warfarin effects as a bone homeostasis disruptor and soft tissue calcification inductor, and its potential risk for aquatic environments.
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Affiliation(s)
- Ignacio Fernández
- Centre of Marine Sciences (CCMAR), University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal.
| | - Adriana Santos
- Centre of Marine Sciences (CCMAR), University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - M Leonor Cancela
- Centre of Marine Sciences (CCMAR), University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal; Department of Biomedical Sciences and Medicine (DCBM), University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Vincent Laizé
- Centre of Marine Sciences (CCMAR), University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Paulo J Gavaia
- Centre of Marine Sciences (CCMAR), University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
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Pugh CP, Pouncey DL, Hartman JH, Nshimiyimana R, Desrochers LP, Goodwin TE, Boysen G, Miller GP. Multiple UDP-glucuronosyltransferases in human liver microsomes glucuronidate both R- and S-7-hydroxywarfarin into two metabolites. Arch Biochem Biophys 2014; 564:244-53. [PMID: 25447818 DOI: 10.1016/j.abb.2014.10.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Revised: 10/08/2014] [Accepted: 10/15/2014] [Indexed: 01/20/2023]
Abstract
The widely used anticoagulant Coumadin (R/S-warfarin) undergoes oxidation by cytochromes P450 into hydroxywarfarins that subsequently become conjugated for excretion in urine. Hydroxywarfarins may modulate warfarin metabolism transcriptionally or through direct inhibition of cytochromes P450 and thus, UGT action toward hydroxywarfarin elimination may impact levels of the parent drugs and patient responses. Nevertheless, relatively little is known about conjugation by UDP-glucuronosyltransferases in warfarin metabolism. Herein, we identified probable conjugation sites, kinetic mechanisms and hepatic UGT isoforms involved in microsomal glucuronidation of R- and S-7-hydroxywarfarin. Both compounds underwent glucuronidation at C4 and C7 hydroxyl groups based on elution properties and spectral characteristics. Their formation demonstrated regio- and enantioselectivity by UGTs and resulted in either Michaelis-Menten or substrate inhibition kinetics. Glucuronidation at the C7 hydroxyl group occurred more readily than at the C4 group, and the reaction was overall more efficient for R-7-hydroxywarfarin due to higher affinity and rates of turnover. The use of these mechanisms and parameters to model in vivo clearance demonstrated that contributions of substrate inhibition would lead to underestimation of metabolic clearance than that predicted by Michaelis-Menten kinetics. Lastly, these processes were driven by multiple UGTs indicating redundancy in glucuronidation pathways and ultimately metabolic clearance of R- and S-7-hydroxywarfarin.
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Affiliation(s)
- C Preston Pugh
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Dakota L Pouncey
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR, USA; Department of Chemistry, Hendrix College, Conway, AR, USA
| | - Jessica H Hartman
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | | | | | | | - Gunnar Boysen
- Department of Environmental and Occupational Health, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Grover P Miller
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
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Zhou Y, Zhao W, Xie G, Huang M, Hu M, Jiang X, Zeng D, Liu J, Zhou H, Chen H, Wang GH, Zhang XK. Induction of Nur77-dependent apoptotic pathway by a coumarin derivative through activation of JNK and p38 MAPK. Carcinogenesis 2014; 35:2660-9. [PMID: 25187486 DOI: 10.1093/carcin/bgu186] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Coumarins are plant-derived natural products with a broad range of known pharmacological activities including anticancer effects. However, the molecular mechanisms by which this class of promising compounds exerts their anticancer effects remain largely unknown. We report here that a furanocoumarin named apaensin could effectively induce apoptosis of cancer cells through its activation of Jun N-terminal kinase (JNK) and p38 mitogen-activated protein kinase (MAPK). Apoptosis induction by apaensin in cancer cells was suppressed by chemical inhibitors of JNK and p38 MAPK. Inhibition of the expression of orphan nuclear receptor Nur77 by small interfering RNA (siRNA) approach also abrogated the death effect of apaensin. Molecular analysis demonstrated that JNK activation was required for the nuclear export of Nur77, a known apoptotic event in cancer cells. Although p38 MAPK activation was not involved in Nur77 nuclear export, it was essential for Nur77 mitochondrial targeting through induction of Nur77 interaction with Bcl-2, which is also known to convert Bcl-2 from an antiapoptotic to a proapoptotic molecule. Together, our results identify a new natural product that targets orphan nuclear receptor Nur77 through its unique activation of JNK and p38 MAPK and provide insight into the complex regulation of the Nur77-Bcl-2 apoptotic pathway.
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Affiliation(s)
- Yuqi Zhou
- School of Pharmaceutical Science, Xiamen University, Xiamen, Fujian 361005, China and
| | - Wei Zhao
- School of Pharmaceutical Science, Xiamen University, Xiamen, Fujian 361005, China and
| | - Guobin Xie
- School of Pharmaceutical Science, Xiamen University, Xiamen, Fujian 361005, China and
| | - Mingfeng Huang
- School of Pharmaceutical Science, Xiamen University, Xiamen, Fujian 361005, China and
| | - Mengjie Hu
- School of Pharmaceutical Science, Xiamen University, Xiamen, Fujian 361005, China and
| | - Xin Jiang
- School of Pharmaceutical Science, Xiamen University, Xiamen, Fujian 361005, China and
| | - Dequan Zeng
- School of Pharmaceutical Science, Xiamen University, Xiamen, Fujian 361005, China and
| | - Jie Liu
- School of Pharmaceutical Science, Xiamen University, Xiamen, Fujian 361005, China and
| | - Hu Zhou
- School of Pharmaceutical Science, Xiamen University, Xiamen, Fujian 361005, China and Cancer Center, Sanford-Burnham Medical Research Institute, 10901 N. Torrey Pines Road, La Jolla, CA 92037, USA
| | - Haifeng Chen
- School of Pharmaceutical Science, Xiamen University, Xiamen, Fujian 361005, China and
| | - Guang-Hui Wang
- School of Pharmaceutical Science, Xiamen University, Xiamen, Fujian 361005, China and
| | - Xiao-Kun Zhang
- School of Pharmaceutical Science, Xiamen University, Xiamen, Fujian 361005, China and Cancer Center, Sanford-Burnham Medical Research Institute, 10901 N. Torrey Pines Road, La Jolla, CA 92037, USA
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Glucocorticoid receptor regulates organic cation transporter 1 (OCT1, SLC22A1) expression via HNF4α upregulation in primary human hepatocytes. Pharmacol Rep 2014; 65:1322-35. [PMID: 24399729 DOI: 10.1016/s1734-1140(13)71491-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 06/07/2013] [Indexed: 01/11/2023]
Abstract
BACKGROUND Organic cation transporter 1 (OCT1, SLC22A1) is a membrane transporter that is important for therapeutic effect of the antidiabetic drug metformin. Its liver-specific expression in hepatocytes is strongly controlled by hepatocyte nuclear factor-4α (HNF4α). HNF4α expression and transcriptional activity have been demonstrated to be augmented by glucocorticoid receptor (GR) in human hepatocytes and rodent livers. METHODS It was examined whether GR activation indirectly induces OCT1 gene expression via HNF4α up-regulation in primary human hepatocytes. We also examined which other transcription factors are involved in OCT1 gene expression and whether they are regulated by dexamethasone using qRT-PCR and gene reporter assays. RESULTS We found that dexamethasone significantly up-regulates OCT1 mRNA and protein in normal primary human hepatocytes, but not in hepatocyte-derived tumor cell lines HepG2 and MZ-Hep1. Consistently, we observed that HNF4α is induced by dexamethasone in primary human hepatocytes, but not in hepatocyte tumor-derived cell lines. Viral transduction of MZ-Hep1 cells with the expression constructs for HNF4α, CCAAT/enhancer binding proteins β (C/EBPβ) and peroxisome proliferator-activated receptor-γ coactivator 1α (PGC1α) demonstrated significant roles of the transcription factors in OCT1 gene regulation. We found that expression of OCT1 mRNA in human livers significantly correlates with C/EBPβ and HNF4α mRNAs expression and that C/EBPβ co-transfection stimulates OCT1 gene reporter construct in HepG2 cells. Nevertheless, neither C/EBPβ nor PGC1α were upregulated in human hepatocytes by dexamethasone. CONCLUSION We can conclude that GR-induced expression of HNF4α may contribute to indirect OCT1 gene up-regulation by dexamethasone in primary human hepatocytes, but not in hepatocyte-derived tumor cell lines.
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Lin W, Liu J, Jeffries C, Yang L, Lu Y, Lee RE, Chen T. Development of BODIPY FL vindoline as a novel and high-affinity pregnane X receptor fluorescent probe. Bioconjug Chem 2014; 25:1664-77. [PMID: 25133934 PMCID: PMC4166032 DOI: 10.1021/bc5002856] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
![]()
The pregnane X receptor (PXR) regulates
the metabolism and excretion
of xenobiotics and endobiotics by regulating the expression of drug-metabolizing
enzymes and transporters. The unique structure of PXR allows it to
bind many drugs and drug leads, possibly causing undesired drug–drug
interactions. Therefore, it is crucial to evaluate whether chemicals
or drugs bind to PXR. Fluorescence-based assays are preferred because
of their sensitivity and nonradioactive nature. On the basis of our
previously characterized 4 (BODIPY FL vinblastine), a
high-affinity PXR probe, we developed 20 (BODIPY FL vindoline)
and showed that it is a novel and potent PXR fluorescent probe with Kd of 256 nM in a time-resolved fluorescence
resonance energy transfer (TR-FRET) binding assay with PXR. By using 20 (BODIPY FL vindoline) in the PXR TR-FRET assay, we obtained
a more than 7-fold signal-to-background ratio and high signal stability
(signal was stable for at least 120 min, and Z′-factor
> 0.85 from 30 to 240 min). The assay can tolerate DMSO up to 2%.
This assay has been used to evaluate a panel of PXR ligands for their
PXR-binding affinities. The performance of 20 (BODIPY
FL vindoline) in the PXR TR-FRET assay makes it an ideal PXR fluorescent
probe, and the newly developed PXR TR-FRET assay with 20 (BODIPY FL vindoline) as a fluorescent probe is suitable for high-throughput
screening to identify PXR-binding ligands.
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Affiliation(s)
- Wenwei Lin
- Department of Chemical Biology and Therapeutics, St. Jude Children's Research Hospital , 262 Danny Thomas Place, Mail Stop 1000, Memphis, Tennessee 38105, United States
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Schoindre Y, Jallouli M, Tanguy ML, Ghillani P, Galicier L, Aumaître O, Francès C, Le Guern V, Lioté F, Smail A, Limal N, Perard L, Desmurs-Clavel H, Le Thi Huong D, Asli B, Kahn JE, Sailler L, Ackermann F, Papo T, Sacré K, Fain O, Stirnemann J, Cacoub P, Leroux G, Cohen-Bittan J, Hulot JS, Lechat P, Musset L, Piette JC, Amoura Z, Souberbielle JC, Costedoat-Chalumeau N. Lower vitamin D levels are associated with higher systemic lupus erythematosus activity, but not predictive of disease flare-up. Lupus Sci Med 2014; 1:e000027. [PMID: 25379192 PMCID: PMC4213833 DOI: 10.1136/lupus-2014-000027] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 04/03/2014] [Accepted: 05/08/2014] [Indexed: 01/11/2023]
Abstract
Objectives Growing evidence suggests that vitamin D plays a key role in the pathogenesis and progression of autoimmune diseases, including systemic lupus erythematosus (SLE). Recent studies have found an association between lower serum 25-hydroxyvitamin D (25(OH)D) levels and higher SLE activity. We studied the relationship between 25(OH)D levels and Systemic Lupus Erythematosus Disease Activity Index (SLEDAI) score, and we assessed for the first time the role of vitamin D in predicting SLE flare-ups. Methods Serum 25(OH)D levels were measured in 170 patients with SLE who were prospectively followed up for 6 months (Plaquenil LUpus Systemic study, ClinicalTrials.gov number NCT00413361). Results The mean SLEDAI score was 2.03±2.43 and 12.3% patients had active disease (SLEDAI ≥6). The mean 25(OH)D level was 20.6±9.8 ng/mL. Deficiency (25(OH)D <10 ng/mL) was observed in 27 (15.9%), insufficiency (10≤25(OH)D<30) in 112 (65.9%) and optimal vitamin D status (25(OH)D≥30) in 31 (18.2%) patients. In multivariate analysis, female gender (p=0.018), absence of defined antiphospholipid syndrome (p=0.002) and higher creatinine clearance (p=0.004) were predictive of lower 25(OH)D levels. In multivariate analysis, lower 25(OH)D levels were associated with high SLE activity (p=0.02). Relapse-free survival rate was not statistically different according to the vitamin D status during the 6-month follow-up (p=0.22). Conclusions We found a low vitamin D status in the majority of patients with SLE, and a modest association between lower 25(OH)D levels and high disease activity. There was no association between baseline 25(OH)D levels and relapse-free survival rate.
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Affiliation(s)
- Yoland Schoindre
- UPMC, Université Paris 6 , Paris , France ; AP-HP, Hôpital Pitié-Salpêtrière, Service de Médecine Interne 1, 47-83 Boulevard de l'Hôpital , Paris, Cedex , France
| | - Moez Jallouli
- UPMC, Université Paris 6 , Paris , France ; AP-HP, Hôpital Pitié-Salpêtrière, Centre de référence national pour le Lupus Systémique et le syndrome des Antiphospholipides, Service de Médecine Interne 2, 47-83 Boulevard de l'Hôpital , Paris, Cedex , France
| | - Marie-Laure Tanguy
- AP-HP, Hôpital Pitié-Salpêtrière, Unité de recherche clinique, 47-83 Boulevard de l'Hôpital , Paris, Cedex , France
| | - Pascale Ghillani
- AP-HP, Hôpital Pitié-Salpêtrière, Laboratoire d'Immunochimie, 47-83 Boulevard de l'Hôpital , Paris, Cedex , France
| | - Lionel Galicier
- Université Paris Diderot, Sorbonne Paris Cité , Paris , France ; AP-HP, Hôpital Saint-Louis, Service d'Immunologie Clinique, 1 avenue Claude Vellefaux , Paris , France
| | - Olivier Aumaître
- Université de Clermont-Ferrand , Clermont-Ferrand , France ; CHU Clermont-Ferrand, Hôpital Gabriel Montpied, service de Médecine Interne , Clermont-Ferrand, Cedex , France
| | - Camille Francès
- UPMC, Université Paris 6 , Paris , France ; AP-HP, Hôpital Tenon, Service de Dermatologie Allergologie , Paris , France
| | - Véronique Le Guern
- Université Paris Descartes, Sorbonne Paris Cité , Paris , France ; AP-HP, Hôpital Cochin, Service de Médecine Interne , Paris , France
| | - Frédéric Lioté
- Université Paris Diderot, Sorbonne Paris Cité , Paris , France ; AP-HP, Hôpital Lariboisière, Service de Rhumatologie , Paris , France
| | - Amar Smail
- CHU Amiens, Hôpital Nord, Service de Médecine Interne, Place Victor Pauchet , Amiens , France
| | - Nicolas Limal
- AP-HP, Hôpital Henri Mondor, Service de Médecine Interne , Créteil , France
| | - Laurent Perard
- Hospices Civils de Lyon, Groupement Hospitalier Edouard Herriot, Service de Médecine Interne , Lyon , France
| | - Hélène Desmurs-Clavel
- Hospices Civils de Lyon, Groupement Hospitalier Edouard Herriot, Service de Médecine Interne , Lyon , France
| | - Du Le Thi Huong
- UPMC, Université Paris 6 , Paris , France ; AP-HP, Hôpital Pitié-Salpêtrière, Centre de référence national pour le Lupus Systémique et le syndrome des Antiphospholipides, Service de Médecine Interne 2, 47-83 Boulevard de l'Hôpital , Paris, Cedex , France
| | - Bouchra Asli
- Université Paris Diderot, Sorbonne Paris Cité , Paris , France ; AP-HP, Hôpital Saint-Louis, Service d'Immunologie Clinique, 1 avenue Claude Vellefaux , Paris , France
| | - Jean-Emmanuel Kahn
- Université Versailles-Saint-Quentin-en-Yvelines, Hôpital Foch, Service de Médecine Interne , Suresnes, Cedex , France
| | - Laurent Sailler
- Université Paul-Sabatier , Toulouse , France ; CHU Toulouse, Hôpital Purpan, Service de Médecine Interne, Place Dr Baylac , Toulouse , France
| | - Félix Ackermann
- Université Versailles-Saint-Quentin-en-Yvelines, Hôpital Foch, Service de Médecine Interne , Suresnes, Cedex , France
| | - Thomas Papo
- Université Paris Diderot, Sorbonne Paris Cité , Paris , France ; AP-HP, Hôpital Bichat Claude-Bernard, Service de Médecine Interne , Paris , France
| | - Karim Sacré
- Université Paris Diderot, Sorbonne Paris Cité , Paris , France ; AP-HP, Hôpital Bichat Claude-Bernard, Service de Médecine Interne , Paris , France
| | - Olivier Fain
- Université Paris Nord , Sorbonne Paris Cité , France ; AP-HP, Hôpital Jean-Verdier, Service de Médecine Interne , Bondy , France
| | - Jérôme Stirnemann
- Université Paris Nord , Sorbonne Paris Cité , France ; AP-HP, Hôpital Jean-Verdier, Service de Médecine Interne , Bondy , France
| | - Patrice Cacoub
- UPMC, Université Paris 6 , Paris , France ; AP-HP, Hôpital Pitié-Salpêtrière, Centre de référence national pour le Lupus Systémique et le syndrome des Antiphospholipides, Service de Médecine Interne 2, 47-83 Boulevard de l'Hôpital , Paris, Cedex , France
| | - Gaëlle Leroux
- UPMC, Université Paris 6 , Paris , France ; AP-HP, Hôpital Pitié-Salpêtrière, Service de Médecine Interne 1, 47-83 Boulevard de l'Hôpital , Paris, Cedex , France
| | - Judith Cohen-Bittan
- UPMC, Université Paris 6 , Paris , France ; AP-HP, Hôpital Pitié-Salpêtrière, Centre de référence national pour le Lupus Systémique et le syndrome des Antiphospholipides, Service de Médecine Interne 2, 47-83 Boulevard de l'Hôpital , Paris, Cedex , France
| | - Jean-Sébastien Hulot
- UPMC, Université Paris 6 , Paris , France ; AP-HP, Hôpital Pitié-Salpêtrière, Service de Pharmacologie , Paris, Cedex , France
| | - Philippe Lechat
- UPMC, Université Paris 6 , Paris , France ; AP-HP, Hôpital Pitié-Salpêtrière, Service de Pharmacologie , Paris, Cedex , France
| | - Lucile Musset
- AP-HP, Hôpital Pitié-Salpêtrière, Laboratoire d'Immunochimie, 47-83 Boulevard de l'Hôpital , Paris, Cedex , France
| | - Jean-Charles Piette
- UPMC, Université Paris 6 , Paris , France ; AP-HP, Hôpital Pitié-Salpêtrière, Centre de référence national pour le Lupus Systémique et le syndrome des Antiphospholipides, Service de Médecine Interne 2, 47-83 Boulevard de l'Hôpital , Paris, Cedex , France
| | - Zahir Amoura
- UPMC, Université Paris 6 , Paris , France ; AP-HP, Hôpital Pitié-Salpêtrière, Centre de référence national pour le Lupus Systémique et le syndrome des Antiphospholipides, Service de Médecine Interne 2, 47-83 Boulevard de l'Hôpital , Paris, Cedex , France
| | - Jean-Claude Souberbielle
- Université Paris Descartes, Sorbonne Paris Cité , Paris , France ; AP-HP, Hôpital Necker-Enfants Malades, Laboratoire de Physiologie , Paris , France
| | - Nathalie Costedoat-Chalumeau
- UPMC, Université Paris 6 , Paris , France ; AP-HP, Hôpital Pitié-Salpêtrière, Centre de référence national pour le Lupus Systémique et le syndrome des Antiphospholipides, Service de Médecine Interne 2, 47-83 Boulevard de l'Hôpital , Paris, Cedex , France
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U0126, a mitogen-activated protein kinase kinase 1 and 2 (MEK1 and 2) inhibitor, selectively up-regulates main isoforms of CYP3A subfamily via a pregnane X receptor (PXR) in HepG2 cells. Arch Toxicol 2014; 88:2243-59. [PMID: 24819614 DOI: 10.1007/s00204-014-1254-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 04/15/2014] [Indexed: 02/07/2023]
Abstract
Hepatocyte tumor cell lines lack the expression or induction properties of major cytochrome P450 (CYP) enzymes compared to primary human hepatocytes. The Ras/Raf/MEK/ERK signaling cascade contributes to hepatocarcinogenesis, dedifferentiation and loss of hepatocyte drug metabolism in hepatocyte tumors. In the present study, we examined whether MEK1/2 inhibitors can restore the expression of CYP genes in hepatocarcinoma HepG2 cells. We found that U0126, a prototype dual MEK1/2 inhibitor, is a potent inducer of CYP3A4, CYP3A5 and CYP3A7 mRNA expression (>100-fold) in HepG2 cells and CYP3A4 mRNA expression in primary human hepatocytes. This U0126-mediated induction is sensitive to the transcriptional inhibitor actinomycin D and was not detected for CYP2B6 or MDR1 mRNA expression. In gene reporter assays, U0126 activates a CYP3A4 promoter luciferase reporter construct containing PXR response elements (PXREs), but not a construct containing mutated PXREs. Based on a ligand binding assay and the examination of a PXR mutant expressing an obstructed ligand binding pocket, we found that U0126 is a ligand of PXR. We also found that U0126 up-regulates the mRNA expression of the nuclear receptors HNF4α, CAR, VDR and PXR but abolishes small heterodimer partner (SHP) corepressor expression in HepG2 cells. The MEK1/2 inhibitors PD0325901 and PD184352, as well as dominant-negative MEK1 expression, also down-regulate SHP mRNA expression. In contrast, dominant-negative MEK1 expression does not significantly induce CYP3A4 gene in HepG2 cells. In conclusion, we found that U0126 is an atypical PXR ligand that via direct (binding and activation of PXR) and indirect (SHP dowregulation) mechanisms selectively restores CYP3A genes in HepG2 cells.
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Deguchi H, Elias DJ, Trauger S, Zhang HM, Kalisiak E, Siuzdak G, Griffin JH. Warfarin untargeted metabolomics study identifies novel procoagulant ethanolamide plasma lipids. Br J Haematol 2014; 165:409-12. [PMID: 24450944 DOI: 10.1111/bjh.12720] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2013] [Accepted: 11/27/2013] [Indexed: 11/30/2022]
Affiliation(s)
- Hiroshi Deguchi
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA, USA
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Novotna A, Kamenickova A, Pecova M, Korhonova M, Bartonkova I, Dvorak Z. Profiling of enantiopure drugs towards aryl hydrocarbon (AhR), glucocorticoid (GR) and pregnane X (PXR) receptors in human reporter cell lines. Chem Biol Interact 2013; 208:64-76. [PMID: 24316275 DOI: 10.1016/j.cbi.2013.11.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 11/19/2013] [Accepted: 11/28/2013] [Indexed: 01/15/2023]
Abstract
In the past decade, a large number of enantiopure drugs were introduced to clinical practice, since improved therapeutic effects were demonstrated for one of the enantiomers from originally racemic drug. While the therapeutic effects and safety of enantiopure drugs were tested prior to their approval, various biological enantiospecific activities of these, often "old" drugs, remain to be elucidated. In the current paper, we examined enantiospecific effects of clinically used enantiopure drugs containing one chiral center in the structure (i.e. zopiclone, tamsulosin, tolterodine, modafinil, citalopram) towards aryl hydrocarbon (AhR), glucocorticoid (GR) and pregnane X (PXR) receptors in human reporter cell lines. The cytotoxicity (IC50), agonist (EC50) and antagonist effects (IC50) of R-form, S-form and racemic mixture for each tested drugs were determined and compared in AhR-, GR- and PXR-gene reporter cell lines. Since AhR, GR and PXR are key regulators of drug metabolism, energy metabolism, immunity and play many other physiological functions, the data presented here might be of toxicological significance.
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Affiliation(s)
- Aneta Novotna
- Department of Cell Biology and Genetics, Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic
| | - Alzbeta Kamenickova
- Department of Cell Biology and Genetics, Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic
| | - Michaela Pecova
- Department of Cell Biology and Genetics, Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic
| | - Martina Korhonova
- Department of Cell Biology and Genetics, Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic
| | - Iveta Bartonkova
- Department of Cell Biology and Genetics, Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic
| | - Zdenek Dvorak
- Department of Cell Biology and Genetics, Regional Centre of Advanced Technologies and Materials, Faculty of Science, Palacký University, Šlechtitelů 11, 783 71 Olomouc, Czech Republic.
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Lin W, Chen T. A vinblastine fluorescent probe for pregnane X receptor in a time-resolved fluorescence resonance energy transfer assay. Anal Biochem 2013; 443:252-60. [PMID: 24044991 DOI: 10.1016/j.ab.2013.09.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 09/06/2013] [Accepted: 09/09/2013] [Indexed: 12/20/2022]
Abstract
The pregnane X receptor (PXR) regulates the metabolism and excretion of xenobiotics and endobiotics by regulating the expression of drug-metabolizing enzymes and transporters. The unique structure of PXR allows the binding of many drugs and drug leads to it, possibly causing undesired drug-drug interactions. Therefore, it is crucial to evaluate whether lead compounds bind to PXR. Fluorescence-based assays are preferred because of their sensitivity and nonradioactive nature. One fluorescent PXR probe is currently commercially available; however, because its chemical structure is not publicly disclosed, it is not optimal for studying ligand-PXR interactions. Here we report the characterization of BODIPY FL-vinblastine, generated by labeling vinblastine with the fluorophore 4,4-difluoro-5,7-dimethyl-4-bora-3a,4a-diaza-s-indacene (BODIPY FL), as a high-affinity ligand for human PXR with a Kd value of 673 nM. We provide evidence that BODIPY FL-vinblastine is a unique chemical entity different from either vinblastine or the fluorophore BODIPY FL in its function as a high-affinity human PXR ligand. We describe a BODIPY FL-vinblastine-based human PXR time-resolved fluorescence resonance energy transfer assay, which was used to successfully test a panel of human PXR ligands. The BODIPY FL-vinblastine-based biochemical assay is suitable for high-throughput screening to evaluate whether lead compounds bind to PXR.
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Affiliation(s)
- Wenwei Lin
- Department of Chemical Biology and Therapeutics, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
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Vrzal R, Knoppová B, Bachleda P, Dvořák Z. Effects of oral anorexiant sibutramine on the expression of cytochromes P450s in human hepatocytes and cancer cell lines. J Biochem Mol Toxicol 2013; 27:515-21. [PMID: 24038852 DOI: 10.1002/jbt.21516] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 06/30/2013] [Accepted: 07/20/2013] [Indexed: 11/09/2022]
Abstract
Sibutramine is a serotonin-norepinephrine reuptake inhibitor that was used for weight-loss management in obese patients. Even though it was officially withdrawn from the market in 2010, it is still present in some tainted weight-loss pills (as reported by US Food and Drug Administration). Thus, it is still reasonable to study the effects of this compound. The aim of this work was to investigate the potential of sibutramine to induce CYP1A1/CY3A4 in human cancer cell lines and CYP1A1/2, CYP2A6, CYP2B6, and CYP3A4 in human hepatocytes, a competent model of metabolically active cells. The levels of mRNA and protein of CYP1A1/1A2/3A4/2A6/2B6 were compared with the typical inducers, 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and rifampicin (RIF) for CYP1A1/2 and for other CYPs, respectively. The mRNA and protein levels of all genes in either cancer cell lines or human hepatocytes were induced when treated with typical inducers but not with sibutramine.
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Affiliation(s)
- Radim Vrzal
- Department of Cell Biology and Genetics, Faculty of Science, Palacky University, Slechtitelu 11, 783 71 Olomouc, Czech Republic.
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Beazley KE, Eghtesad S, Nurminskaya MV. Quercetin attenuates warfarin-induced vascular calcification in vitro independently from matrix Gla protein. J Biol Chem 2013; 288:2632-40. [PMID: 23223575 PMCID: PMC3554930 DOI: 10.1074/jbc.m112.368639] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 11/14/2012] [Indexed: 12/20/2022] Open
Abstract
Warfarin can stimulate vascular calcification in vitro via activation of β-catenin signaling and/or inhibition of matrix Gla protein (MGP) carboxylation. Calcification was induced in vascular smooth muscle cells (VSMCs) with therapeutic levels of warfarin in normal calcium and clinically acceptable phosphate levels. Although TGF/BMP and PKA pathways are activated in calcifying VSMCs, pharmacologic analysis reveals that their activation is not contributory. However, β-catenin activity is important because inhibition of β-catenin with shRNA or bioflavonoid quercetin prevents calcification in primary human VSMCs, rodent aortic rings, and rat A10 VSMC line. In the presence of quercetin, reactivation of β-catenin using the glycogen synthase kinase-3β (GSK-3β) inhibitor LiCl restores calcium accumulation, confirming that quercetin mechanism of action hinges on inhibition of the β-catenin pathway. Calcification in VSMCs induced by 10 μm warfarin does not associate with reduced levels of carboxylated MGP, and inhibitory effects of quercetin do not involve induction of MGP carboxylation. Further, down-regulation of MGP by shRNA does not alter the effect of quercetin. These results suggest a new β-catenin-targeting strategy to prevent vascular calcification induced by warfarin and identify quercetin as a potential therapeutic in this pathology.
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Affiliation(s)
- Kelly E. Beazley
- From the Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland 21201
| | - Saman Eghtesad
- From the Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland 21201
| | - Maria V. Nurminskaya
- From the Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland 21201
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Stereoselective regulations of P-glycoprotein by ginsenoside Rh2 epimers and the potential mechanisms from the view of pharmacokinetics. PLoS One 2012; 7:e35768. [PMID: 22530069 PMCID: PMC3329467 DOI: 10.1371/journal.pone.0035768] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Accepted: 03/21/2012] [Indexed: 11/22/2022] Open
Abstract
Chirality is an interesting topic and it is meaningful to explore the interactions between chiral small molecules and stereoselective biomacromolecules, with pre-clinical and clinical significances. We have previously demonstrated that 20(S)-ginsenoside Rh2 is an effective P-glycoprotein (P-gp) inhibitor in vitro and in vivo. Considering the stereochemistry of ginsenoside Rh2, in our present study, the regulatory effects of 20(R)-Rh2 on P-gp were assayed in vivo, and the differential regulations of P-gp by ginsenoside Rh2 epimers in vivo were compared and studied. Results showed that 20(S)-Rh2 enhanced the oral absorption of digoxin in rats in a dose-dependent manner; 20(R)-Rh2 at low dosage increased the oral absorption of digoxin, but this effect diminished with elevated dosage of 20(R)-Rh2. Further studies indicated stereoselective pharmacokinetic profiles and intestinal biotransformations of Rh2 epimers. In vitro studies showed that Rh2 epimers and their corresponding deglycosylation metabolites protopanaxadiol (Ppd) epimers all exhibited stereoselective regulations of P-gp. In conclusion, in view of the in vitro and in vivo dispositions of Rh2 and the regulations of P-gp by Rh2 and Ppd, it is suggested that the P-gp regulatory effect of Rh2 in vivo actually is a double actions of both Rh2 and Ppd, and the net effect is determined by the relative balance between Rh2 and Ppd with the same configuration. Our study provides new evidence of the chiral characteristics of P-gp, and is helpful to elucidate the stereoselective P-gp regulation mechanisms of ginsenoside Rh2 epimers in vivo from a pharmacokinetic view.
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Beazley KE, Deasey S, Lima F, Nurminskaya MV. Transglutaminase 2-mediated activation of β-catenin signaling has a critical role in warfarin-induced vascular calcification. Arterioscler Thromb Vasc Biol 2011; 32:123-30. [PMID: 22034513 DOI: 10.1161/atvbaha.111.237834] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
OBJECTIVE Accumulating experimental evidence implicates β-catenin signaling and enzyme transglutaminase 2 (TG2) in the progression of vascular calcification, and our previous studies have shown that TG2 can activate β-catenin signaling in vascular smooth muscle cells (VSMCs). Here we investigated the role of the TG2/β-catenin signaling axis in vascular calcification induced by warfarin. METHODS AND RESULTS Warfarin-induced calcification in rat A10 VSMCs is associated with the activation of β-catenin signaling and is independent of oxidative stress. The canonical β-catenin inhibitor Dkk1, but not the Wnt antagonist Wif-1, prevents warfarin-induced activation of β-catenin, calcification, and osteogenic transdifferentiation in VSMCs. TG2 expression and activity are increased in warfarin-treated cells, in contrast to canonical Wnt ligands. Vascular cells with genetically or pharmacologically reduced TG2 activity fail to activate β-catenin in response to warfarin. Moreover, warfarin-induced calcification is significantly reduced on the background of attenuated TG2 both in vitro and in vivo. CONCLUSIONS TG2 is a critical mediator of warfarin-induced vascular calcification that acts through the activation of β-catenin signaling in VSMCs. Inhibition of canonical β-catenin pathway or TG2 activity prevents warfarin-regulated calcification, identifying the TG2/β-catenin axis as a novel therapeutic target in vascular calcification.
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Affiliation(s)
- Kelly E Beazley
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, 108 N Greene St, Baltimore, MD 21201, USA
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Abstract
INTRODUCTION There are numerous drug-drug interactions (DDIs) related to cardiovascular medications and many of these are mediated via the cytochrome P450 (CYP) system. Some of these may lead to serious adverse events and it is, therefore, essential that clinicians are aware of the important interactions that occur. AREAS COVERED An extensive literature search was performed to analyze the CYP-mediated cardiovascular DDIs that lead to a loss of efficacy or potential toxicity. Cardiovascular drugs may be victims or act as perpetrators of DDIs. The paper analyzes CYP-mediated drug interactions concerning anticoagulants, antiplatelet agents, antiarrhythmics, β-blockers, calcium antagonists, antihypertensive medications, lipid-lowering drugs and oral antidiabetic agents. EXPERT OPINION Cardiovascular DDIs involving the CYP system are numerous. Additionally, the spectrum of drugs prescribed is constantly changing, particularly with cardiovascular diseases and it is not necessarily the case that drugs that had shown safety earlier will always show safety. Clinicians are encouraged to develop their knowledge of CYP-mediated DDIs so that they can choose safe drug combination regimens, adjust drug dosages appropriately and conduct therapeutic drug monitoring for drugs with narrow therapeutic indices.
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Affiliation(s)
- André J Scheen
- University of Liège, Division of Diabetes, Nutrition and Metabolic Disorders, Division of Clinical Pharmacology, Department of Medicine, CHU Liege, Belgium.
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Jones DR, Miller GP. Assays and applications in warfarin metabolism: what we know, how we know it and what we need to know. Expert Opin Drug Metab Toxicol 2011; 7:857-74. [PMID: 21480820 DOI: 10.1517/17425255.2011.576247] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Coumadin (R/S-warfarin) is the most widely prescribed oral anticoagulant in the world; nevertheless, its clinical use is complicated by unpredictability in dose requirements to achieve and maintain optimal anticoagulation. Variations in warfarin metabolism among patients contribute to unpredictability in therapeutic responses. Studying the clinical relevance of warfarin metabolism poses a significant analytical challenge. Warfarin is given to patients as an equal mixture of R and S enantiomers. Both drugs undergo extensive metabolism through different pathways to generate > 20 structurally similar isomeric metabolites. AREAS COVERED The article discusses how analytical methods have evolved to effectively resolve and quantify individual metabolites. The authors also discuss how the application of these methods has identified clinically relevant metabolic pathways for warfarin and fostered the investigation of clinical biomarkers for patient responses to therapy. The article additionally presents the power of these methods and how aspects of warfarin metabolism have led to the use of warfarin as a phenotyping probe for multiple drug metabolizing enzymes. EXPERT OPINION Progress in these areas has been hampered by shortcomings in analytical methods and a narrow focus on one metabolic pathway. Recent advances in liquid chromatographic-mass spectral methods can rapidly analyze most warfarin metabolites. It is now possible to effectively assess alternate metabolic pathways and expand biomarker analyses for clinical and phenotyping applications.
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Affiliation(s)
- Drew R Jones
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, 4301 W. Markham, Slot 516, Little Rock, AR 72205, USA
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Affiliation(s)
- G P Miller
- Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
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