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Chen J, Tang LWT, Jordan S, Harrison M, Gualtieri GM, DaSilva E, Morris D, Bora G, Che Y, Di L. Characterization of CYP3A5 Selective Inhibitors for Reaction Phenotyping of Drug Candidates. AAPS J 2024; 26:26. [PMID: 38366061 DOI: 10.1208/s12248-024-00894-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 01/26/2024] [Indexed: 02/18/2024] Open
Abstract
CYP3A is one of the most important classes of enzymes and is involved in the metabolism of over 70% drugs. While several selective CYP3A4 inhibitors have been identified, the search for a selective CYP3A5 inhibitor has turned out to be rather challenging. Recently, several selective CYP3A5 inhibitors have been identified through high-throughput screening of ~ 11,000 compounds and hit expansion using human recombinant enzymes. We set forth to characterize the three most selective CYP3A5 inhibitors in a more physiologically relevant system of human liver microsomes to understand if these inhibitors can be used for reaction phenotyping studies in drug discovery settings. Gomisin A and T-5 were used as selective substrate reactions for CYP3A4 and CYP3A5 to determine IC50 values of the two enzymes. The results showed that clobetasol propionate and loteprednol etabonate were potent and selective CYP3A5 reversible inhibitors with selectivity of 24-fold against CYP3A4 and 39-fold or more against the other major CYPs. The selectivity of difluprednate in HLM is much weaker than that in the recombinant enzymes due to hydrolysis of the acetate group in HLM. Based on the selectivity data, loteprednol etabonate can be utilized as an orthogonal approach, when experimental fraction metabolized of CYP3A5 is greater than 0.5, to understand CYP3A5 contribution to drug metabolism and its clinical significance. Future endeavors to identify even more selective CYP3A5 inhibitors are warranted to enable accurate determination of CYP3A5 contribution to metabolism versus CYP3A4.
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Affiliation(s)
- Jie Chen
- Pharmacokinetics, Dynamics and Metabolism, Pfizer Worldwide Research and Development, Cambridge, MA, USA
| | - Lloyd Wei Tat Tang
- Pharmacokinetics, Dynamics and Metabolism, Pfizer Worldwide Research and Development, Groton, CT, USA
| | - Samantha Jordan
- Pharmacokinetics, Dynamics and Metabolism, Pfizer Worldwide Research and Development, Groton, CT, USA
| | - Makayla Harrison
- Pharmacokinetics, Dynamics and Metabolism, Pfizer Worldwide Research and Development, Groton, CT, USA
| | - Gabrielle M Gualtieri
- Pharmacokinetics, Dynamics and Metabolism, Pfizer Worldwide Research and Development, Groton, CT, USA
| | - Ethan DaSilva
- Pharmacokinetics, Dynamics and Metabolism, Pfizer Worldwide Research and Development, Groton, CT, USA
| | - Danial Morris
- Pharmacokinetics, Dynamics and Metabolism, Pfizer Worldwide Research and Development, Groton, CT, USA
| | - Gary Bora
- Discovery Sciences, Pfizer Worldwide Research and Development, Groton, CT, USA
| | - Ye Che
- Discovery Sciences, Pfizer Worldwide Research and Development, Groton, CT, USA
| | - Li Di
- Pharmacokinetics, Dynamics and Metabolism, Pfizer Worldwide Research and Development, Groton, CT, USA.
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Wang C, Cheng B, Wei W, Gui L, Zeng W, Wang Y, Wang Y, Chen Q, Xu L, Miao J, Lan K. Comparison of 1Beta- and 5Beta-hydroxylation of Deoxycholate and Glycodeoxycholate as In Vitro Index Reactions for Cytochrome P450 3A Activities. Drug Metab Dispos 2024; 52:126-134. [PMID: 38050044 DOI: 10.1124/dmd.123.001513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/13/2023] [Accepted: 11/14/2023] [Indexed: 12/06/2023] Open
Abstract
Cytochrome P450 3A (CYP3A) participates in the metabolism of more than 30% of clinical drugs. The vast intra- and inter-individual variations in CYP3A activity pose great challenges to drug development and personalized medicine. It has been disclosed that human CYP3A4 and CYP3A7 are exclusively responsible for the tertiary oxidations of deoxycholic acid (DCA) and glycodeoxycholic acid (GDCA) regioselectivity at C-1β and C-5β This work aimed to compare the 1β- and 5β-hydroxylation of DCA and GDCA as potential in vitro CYP3A index reactions in both human liver microsomes and recombinant P450 enzymes. The results demonstrated that the metabolic activity of DCA 1β- and 5β-hydroxylation was 5-10 times higher than that of GDCA, suggesting that 1β-hydroxyglycodeoxycholic acid and 5β-hydroxyglycodeoxycholic acid may originate from DCA oxidation followed by conjugation in humans. Metabolic phenotyping data revealed that DCA 1β-hydroxylation, DCA 5β-hydroxylation, and GDCA 5β-hydroxylation were predominantly catalyzed by CYP3A4 (>80%), while GDCA 1β-hydroxylation had approximately equal contributions from CYP3A4 (41%) and 3A7 (58%). Robust Pearson correlation was established for the intrinsic clearance of DCA 1β- and 5β-hydroxylation with midazolam (MDZ) 1'- and 4-hydroxylation in fourteen single donor microsomes. Although DCA 5β-hydroxylation exhibited a stronger correlation with MDZ oxidation, DCA 1β-hydroxylation exhibited higher reactivity than DCA 5β-hydroxylation. It is therefore suggested that DCA 1β- and 5β-hydroxylations may serve as alternatives to T 6β-hydroxylation as in vitro CYP3A index reactions. SIGNIFICANCE STATEMENT: The oxidation of DCA and GDCA is primarily catalyzed by CYP3A4 and CYP3A7. This work compared the 1β- and 5β-hydroxylation of DCA and GDCA as in vitro index reactions to assess CYP3A activities. It was disclosed that the metabolic activity of DCA 1β- and 5β-hydroxylation was 5-10 times higher than that of GDCA. Although DCA 1β-hydroxylation exhibited higher metabolic activity than DCA 5β-hydroxylation, DCA 5β-hydroxylation demonstrated stronger correlation with MDZ oxidation than DCA 1β-hydroxylation in individual liver microsomes.
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Affiliation(s)
- Cuitong Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West ChinaSchool of Pharmacy, Sichuan University, Chengdu, China (C.W., B.C., W.W., L.G., W.Z., Y.W., Y.W., Q.C., L.X., K.L.); Chengdu Cynogen Bio-pharmaceutical Tech. Co., Ltd., Chengdu, China (L.G., W.Z., L.X., K.L.); and Clinical Trial Center, West China Hospital, Sichuan University, Chengdu, China (J.M.)
| | - Bin Cheng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West ChinaSchool of Pharmacy, Sichuan University, Chengdu, China (C.W., B.C., W.W., L.G., W.Z., Y.W., Y.W., Q.C., L.X., K.L.); Chengdu Cynogen Bio-pharmaceutical Tech. Co., Ltd., Chengdu, China (L.G., W.Z., L.X., K.L.); and Clinical Trial Center, West China Hospital, Sichuan University, Chengdu, China (J.M.)
| | - Wei Wei
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West ChinaSchool of Pharmacy, Sichuan University, Chengdu, China (C.W., B.C., W.W., L.G., W.Z., Y.W., Y.W., Q.C., L.X., K.L.); Chengdu Cynogen Bio-pharmaceutical Tech. Co., Ltd., Chengdu, China (L.G., W.Z., L.X., K.L.); and Clinical Trial Center, West China Hospital, Sichuan University, Chengdu, China (J.M.)
| | - Lanlan Gui
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West ChinaSchool of Pharmacy, Sichuan University, Chengdu, China (C.W., B.C., W.W., L.G., W.Z., Y.W., Y.W., Q.C., L.X., K.L.); Chengdu Cynogen Bio-pharmaceutical Tech. Co., Ltd., Chengdu, China (L.G., W.Z., L.X., K.L.); and Clinical Trial Center, West China Hospital, Sichuan University, Chengdu, China (J.M.)
| | - Wushuang Zeng
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West ChinaSchool of Pharmacy, Sichuan University, Chengdu, China (C.W., B.C., W.W., L.G., W.Z., Y.W., Y.W., Q.C., L.X., K.L.); Chengdu Cynogen Bio-pharmaceutical Tech. Co., Ltd., Chengdu, China (L.G., W.Z., L.X., K.L.); and Clinical Trial Center, West China Hospital, Sichuan University, Chengdu, China (J.M.)
| | - Yutong Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West ChinaSchool of Pharmacy, Sichuan University, Chengdu, China (C.W., B.C., W.W., L.G., W.Z., Y.W., Y.W., Q.C., L.X., K.L.); Chengdu Cynogen Bio-pharmaceutical Tech. Co., Ltd., Chengdu, China (L.G., W.Z., L.X., K.L.); and Clinical Trial Center, West China Hospital, Sichuan University, Chengdu, China (J.M.)
| | - Yixuan Wang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West ChinaSchool of Pharmacy, Sichuan University, Chengdu, China (C.W., B.C., W.W., L.G., W.Z., Y.W., Y.W., Q.C., L.X., K.L.); Chengdu Cynogen Bio-pharmaceutical Tech. Co., Ltd., Chengdu, China (L.G., W.Z., L.X., K.L.); and Clinical Trial Center, West China Hospital, Sichuan University, Chengdu, China (J.M.)
| | - Qi Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West ChinaSchool of Pharmacy, Sichuan University, Chengdu, China (C.W., B.C., W.W., L.G., W.Z., Y.W., Y.W., Q.C., L.X., K.L.); Chengdu Cynogen Bio-pharmaceutical Tech. Co., Ltd., Chengdu, China (L.G., W.Z., L.X., K.L.); and Clinical Trial Center, West China Hospital, Sichuan University, Chengdu, China (J.M.)
| | - Liang Xu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West ChinaSchool of Pharmacy, Sichuan University, Chengdu, China (C.W., B.C., W.W., L.G., W.Z., Y.W., Y.W., Q.C., L.X., K.L.); Chengdu Cynogen Bio-pharmaceutical Tech. Co., Ltd., Chengdu, China (L.G., W.Z., L.X., K.L.); and Clinical Trial Center, West China Hospital, Sichuan University, Chengdu, China (J.M.)
| | - Jia Miao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West ChinaSchool of Pharmacy, Sichuan University, Chengdu, China (C.W., B.C., W.W., L.G., W.Z., Y.W., Y.W., Q.C., L.X., K.L.); Chengdu Cynogen Bio-pharmaceutical Tech. Co., Ltd., Chengdu, China (L.G., W.Z., L.X., K.L.); and Clinical Trial Center, West China Hospital, Sichuan University, Chengdu, China (J.M.)
| | - Ke Lan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West ChinaSchool of Pharmacy, Sichuan University, Chengdu, China (C.W., B.C., W.W., L.G., W.Z., Y.W., Y.W., Q.C., L.X., K.L.); Chengdu Cynogen Bio-pharmaceutical Tech. Co., Ltd., Chengdu, China (L.G., W.Z., L.X., K.L.); and Clinical Trial Center, West China Hospital, Sichuan University, Chengdu, China (J.M.)
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Jiménez-Aspee F, Pospiech J, Bauer S, Sus N, Kufer TA, Frank J. Prumnopitys Andina Fruit Extract Activates Liver X Receptors after In Vitro Digestion. Mol Nutr Food Res 2023; 67:e2200377. [PMID: 36267033 DOI: 10.1002/mnfr.202200377] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 09/19/2022] [Indexed: 01/19/2023]
Abstract
SCOPE 20-Hydroxyecdysone (20E) is the main phytochemical present in the fresh arils of Prumnopitys andina. 20E is reported to have anabolic effects by modulation of gene transcription by interaction with nuclear receptors. Our aim is to evaluate the in vitro bioaccessibility, transepithelial transport of 20E, and the capacity of P. andina fruit extract and 20E to activate selected mammalian nuclear receptors in transiently transfected human cells after simulated gastrointestinal digestion. RESULTS 20E shows good stability, solubility, and micellization after in vitro digestion. 20E is taken up by Caco-2 cells, but poorly transported through the epithelial cell membrane, possibly due to P-glycoprotein-mediated efflux. In transiently transfected HepG2 cells, the fruit extract significantly induces the signal intensity for the liver X receptor (LXR)-α and -β by 1.6 and 1.4-fold, respectively. In contrast, the treatment with 20E, irrespective of its concentration, did not change the activity of both LXR receptors. No effects are observed for the pregnane X receptor or the constitutive androstane receptor. CONCLUSION Our findings show that components of the digested P. andina extract other than 20E are responsible for the effects on LXR-α and -β. Our findings open new perspectives on the potential role of P. andina fruits in cholesterol metabolism and inflammatory diseases.
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Affiliation(s)
- Felipe Jiménez-Aspee
- Department of Food Biofunctionality (140b), Institute of Nutritional Sciences, University of Hohenheim, Garbenstrasse 28, 70599, Stuttgart, Baden-Württemberg, Germany
| | - Jonas Pospiech
- Department of Food Biofunctionality (140b), Institute of Nutritional Sciences, University of Hohenheim, Garbenstrasse 28, 70599, Stuttgart, Baden-Württemberg, Germany
| | - Sarah Bauer
- Department of Immunology (180b), Institute of Nutritional Medicine, University of Hohenheim, Fruhwirthstrasse 12, 70599, Stuttgart, Germany
| | - Nadine Sus
- Department of Food Biofunctionality (140b), Institute of Nutritional Sciences, University of Hohenheim, Garbenstrasse 28, 70599, Stuttgart, Baden-Württemberg, Germany
| | - Thomas A Kufer
- Department of Immunology (180b), Institute of Nutritional Medicine, University of Hohenheim, Fruhwirthstrasse 12, 70599, Stuttgart, Germany
| | - Jan Frank
- Department of Food Biofunctionality (140b), Institute of Nutritional Sciences, University of Hohenheim, Garbenstrasse 28, 70599, Stuttgart, Baden-Württemberg, Germany
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4
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Lukanov T, Ivanova M, Yankova P, Al Hadra B, Mihaylova A, Genova M, Svinarov D, Naumova E. Impact of CYP3A7, CYP2D6 and ABCC2/ABCC3 polymorphisms on tacrolimus steady state concentrations in Bulgarian kidney transplant recipients. BIOTECHNOL BIOTEC EQ 2022. [DOI: 10.1080/13102818.2022.2081517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Affiliation(s)
- Tsvetelin Lukanov
- Department of Clinical Immunology, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
- Department of Clinical Immunology and Stem Cell Bank, University Hospital Alexandrovska, Sofia, Bulgaria
| | - Milena Ivanova
- Department of Clinical Immunology, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Petya Yankova
- Department of Clinical Immunology, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Bushra Al Hadra
- Department of Clinical Immunology and Stem Cell Bank, University Hospital Alexandrovska, Sofia, Bulgaria
| | - Anastasiya Mihaylova
- Department of Clinical Immunology and Stem Cell Bank, University Hospital Alexandrovska, Sofia, Bulgaria
| | - Marianka Genova
- Department of Clinical Laboratory & Clinical Pharmacology, University Hospital Alexandrovska, Sofia, Bulgaria
- Department of Clinical Laboratory, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Dobrin Svinarov
- Department of Clinical Laboratory & Clinical Pharmacology, University Hospital Alexandrovska, Sofia, Bulgaria
- Department of Clinical Laboratory, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
| | - Elisaveta Naumova
- Department of Clinical Immunology, Faculty of Medicine, Medical University of Sofia, Sofia, Bulgaria
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Gloor Y, Lloret-Linares C, Bosilkovska M, Perroud N, Richard-Lepouriel H, Aubry JM, Daali Y, Desmeules JA, Besson M. Drug metabolic enzyme genotype-phenotype discrepancy: High phenoconversion rate in patients treated with antidepressants. Biomed Pharmacother 2022; 152:113202. [PMID: 35653884 DOI: 10.1016/j.biopha.2022.113202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 05/23/2022] [Accepted: 05/23/2022] [Indexed: 11/02/2022] Open
Abstract
Cytochromes from the P450 family (CYP) play a central role in the primary metabolism of frequently prescribed antidepressants, potentially affecting their efficacy and tolerance. There are however important differences in the drug metabolic capacities of each individual resulting from a combination of intrinsic and environmental factors. This variability can present an important risk for patients and increases the difficulty of drug prescription in clinical practice. Pharmacogenetic studies have uncovered a number of alleles defining the intrinsic metabolizer status, however, additional factors affecting cytochrome activity can modify this activity and result in a phenoconversion. The present study investigates the discrepancy between the genetically predicted and actually measured activities for the six most important liver cytochromes (CYP1A2, CYP2B6, CYP2C9, CYP2C19, CYP2D6 and CYP3A4) in a cohort of patients under antidepressant treatment, previously shown to have a high proportion of patients with low metabolizing activities. We now performed the genetic characterization of this cohort to determine the extent of the genetic versus environmental contribution in these decreased activities. For all enzyme tested, we observed an important rate of phenoconversion, affecting between 33 % and 65 % of the patients, as well as a significant (p < 1E-06) global reduction in the effective but not predicted activities of CYP2D6, CYP2C9 and CYP2C19 compared to the general population. Our results highlight the advantages of phenotyping versus genotyping as well as the increased risk of treatment failure or adverse effect occurrence in a polymedicated population.
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Affiliation(s)
- Y Gloor
- Division of Clinical Pharmacology and Toxicology, Department of Anesthesiology, Pharmacology, Intensive Care and Emergency, Geneva University Hospitals (HUG), Geneva, Switzerland.
| | - C Lloret-Linares
- Department of Nutritional and Metabolic Diseases, Ramsay Générale de Santé, Pays de Savoie Private Hospital, Annemasse, France
| | - M Bosilkovska
- Clinical Pharmacology and Toxicology, Department of Anaesthetics Pharmacology and Intensive Care, University of Geneva, Geneva, Switzerland
| | - N Perroud
- Division of Psychiatric Specialties, Department of Mental Health and Psychiatry, University of Geneva, Geneva, Switzerland; Division of Psychiatric Specialties, Department of Psychiatry, Geneva University Hospitals (HUG), Geneva, Switzerland
| | - H Richard-Lepouriel
- Division of Psychiatric Specialties, Department of Mental Health and Psychiatry, University of Geneva, Geneva, Switzerland; Division of Psychiatric Specialties, Department of Psychiatry, Geneva University Hospitals (HUG), Geneva, Switzerland
| | - J-M Aubry
- Division of Psychiatric Specialties, Department of Mental Health and Psychiatry, University of Geneva, Geneva, Switzerland
| | - Y Daali
- Division of Clinical Pharmacology and Toxicology, Department of Anesthesiology, Pharmacology, Intensive Care and Emergency, Geneva University Hospitals (HUG), Geneva, Switzerland; Clinical Pharmacology and Toxicology, Department of Anaesthetics Pharmacology and Intensive Care, University of Geneva, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland (ISPSO), University of Geneva, Geneva, Switzerland
| | - J A Desmeules
- Division of Clinical Pharmacology and Toxicology, Department of Anesthesiology, Pharmacology, Intensive Care and Emergency, Geneva University Hospitals (HUG), Geneva, Switzerland; Clinical Pharmacology and Toxicology, Department of Anaesthetics Pharmacology and Intensive Care, University of Geneva, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland (ISPSO), University of Geneva, Geneva, Switzerland
| | - M Besson
- Division of Clinical Pharmacology and Toxicology, Department of Anesthesiology, Pharmacology, Intensive Care and Emergency, Geneva University Hospitals (HUG), Geneva, Switzerland; Clinical Pharmacology and Toxicology, Department of Anaesthetics Pharmacology and Intensive Care, University of Geneva, Geneva, Switzerland
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Hsu MH, Johnson EF. Structural characterization of the homotropic cooperative binding of azamulin to human cytochrome P450 3A5. J Biol Chem 2022; 298:101909. [PMID: 35398097 PMCID: PMC9079302 DOI: 10.1016/j.jbc.2022.101909] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 04/01/2022] [Accepted: 04/03/2022] [Indexed: 01/02/2023] Open
Abstract
Cytochrome P450 3A4 and 3A5 catalyze the metabolic clearance of a large portion of therapeutic drugs. Azamulin is used as a selective inhibitor for 3A4 and 3A5 to define their roles in metabolism of new chemical entities during drug development. In contrast to 3A4, 3A5 exhibits homotropic cooperativity for the sequential binding of two azamulin molecules at concentrations used for inhibition. To define the underlying sites and mechanisms for cooperativity, an X-ray crystal structure of 3A5 was determined with two azamulin molecules in the active site that are stacked in an antiparallel orientation. One azamulin resides proximal to the heme in a pose similar to the 3A4-azamulin complex. Comparison to the 3A5 apo structure indicates that the distal azamulin in 3A5 ternary complex causes a significant induced fit that excludes water from the hydrophobic surfaces of binding cavity and the distal azamulin, which is augmented by the stacking interaction with the proximal azamulin. Homotropic cooperativity was not observed for the binding of related pleuromutilin antibiotics, tiamulin, retapamulin, and lefamulin, to 3A5, which are larger and unlikely to bind in the distal site in a stacked orientation. Formation of the 3A5 complex with two azamulin molecules may prevent time-dependent inhibition that is seen for 3A4 by restricting alternate product formation and/or access of reactive intermediates to vulnerable protein sites. These results also contribute to a better understanding of sites for cooperative binding and the differential structural plasticity of 3A5 and 3A4 that contribute to differential substrate and inhibitor binding.
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Affiliation(s)
- Mei-Hui Hsu
- Department of Molecular Medicine, Scripps Research, La Jolla, California, USA
| | - Eric F Johnson
- Department of Molecular Medicine, Scripps Research, La Jolla, California, USA.
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Mustonen EK, Pantsar T, Rashidian A, Reiner J, Schwab M, Laufer S, Burk O. Target Hopping from Protein Kinases to PXR: Identification of Small-Molecule Protein Kinase Inhibitors as Selective Modulators of Pregnane X Receptor from TüKIC Library. Cells 2022; 11:cells11081299. [PMID: 35455978 PMCID: PMC9030254 DOI: 10.3390/cells11081299] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/05/2022] [Accepted: 04/07/2022] [Indexed: 02/08/2023] Open
Abstract
Small-molecule protein kinase inhibitors are used for the treatment of cancer, but off-target effects hinder their clinical use. Especially off-target activation of the pregnane X receptor (PXR) has to be considered, as it not only governs drug metabolism and elimination, but also can promote tumor growth and cancer drug resistance. Consequently, PXR antagonism has been proposed for improving cancer drug therapy. Here we aimed to identify small-molecule kinase inhibitors of the Tübingen Kinase Inhibitor Collection (TüKIC) compound library that would act also as PXR antagonists. By a combination of in silico screen and confirmatory cellular reporter gene assays, we identified four novel PXR antagonists and a structurally related agonist with a common phenylaminobenzosuberone scaffold. Further characterization using biochemical ligand binding and cellular protein interaction assays classified the novel compounds as mixed competitive/noncompetitive, passive antagonists, which bind PXR directly and disrupt its interaction with coregulatory proteins. Expression analysis of prototypical PXR target genes ABCB1 and CYP3A4 in LS174T colorectal cancer cells and HepaRG hepatocytes revealed novel antagonists as selective receptor modulators, which showed gene- and tissue-specific effects. These results demonstrate the possibility of dual PXR and protein kinase inhibitors, which might represent added value in cancer therapy.
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Affiliation(s)
- Enni-Kaisa Mustonen
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, and University of Tuebingen, 72074 Tuebingen, Germany; (E.-K.M.); (M.S.)
| | - Tatu Pantsar
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmaceutical Sciences, University of Tuebingen, 72076 Tuebingen, Germany; (T.P.); (J.R.); (S.L.)
- School of Pharmacy, Faculty of Health Sciences, University of Eastern Finland, 70210 Kuopio, Finland
| | - Azam Rashidian
- Department of Internal Medicine VIII, University Hospital Tuebingen, 72076 Tuebingen, Germany;
| | - Juliander Reiner
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmaceutical Sciences, University of Tuebingen, 72076 Tuebingen, Germany; (T.P.); (J.R.); (S.L.)
| | - Matthias Schwab
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, and University of Tuebingen, 72074 Tuebingen, Germany; (E.-K.M.); (M.S.)
- Departments of Clinical Pharmacology and Biochemistry and Pharmacy, University of Tuebingen, 72076 Tuebingen, Germany
- Cluster of Excellence iFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies”, University of Tuebingen, 72076 Tuebingen, Germany
| | - Stefan Laufer
- Department of Pharmaceutical and Medicinal Chemistry, Institute of Pharmaceutical Sciences, University of Tuebingen, 72076 Tuebingen, Germany; (T.P.); (J.R.); (S.L.)
- Cluster of Excellence iFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies”, University of Tuebingen, 72076 Tuebingen, Germany
- Tuebingen Center for Academic Drug Discovery & Development (TüCAD2), 72076 Tuebingen, Germany
| | - Oliver Burk
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, and University of Tuebingen, 72074 Tuebingen, Germany; (E.-K.M.); (M.S.)
- Correspondence: ; Tel.: +49-711-8101-5091
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8
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Hirte S, Burk O, Tahir A, Schwab M, Windshügel B, Kirchmair J. Development and Experimental Validation of Regularized Machine Learning Models Detecting New, Structurally Distinct Activators of PXR. Cells 2022; 11:cells11081253. [PMID: 35455933 PMCID: PMC9029776 DOI: 10.3390/cells11081253] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 03/30/2022] [Indexed: 02/04/2023] Open
Abstract
The pregnane X receptor (PXR) regulates the metabolism of many xenobiotic and endobiotic substances. In consequence, PXR decreases the efficacy of many small-molecule drugs and induces drug-drug interactions. The prediction of PXR activators with theoretical approaches such as machine learning (ML) proves challenging due to the ligand promiscuity of PXR, which is related to its large and flexible binding pocket. In this work we demonstrate, by the example of random forest models and support vector machines, that classifiers generated following classical training procedures often fail to predict PXR activity for compounds that are dissimilar from those in the training set. We present a novel regularization technique that penalizes the gap between a model’s training and validation performance. On a challenging test set, this technique led to improvements in Matthew correlation coefficients (MCCs) by up to 0.21. Using these regularized ML models, we selected 31 compounds that are structurally distinct from known PXR ligands for experimental validation. Twelve of them were confirmed as active in the cellular PXR ligand-binding domain assembly assay and more hits were identified during follow-up studies. Comprehensive analysis of key features of PXR biology conducted for three representative hits confirmed their ability to activate the PXR.
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Affiliation(s)
- Steffen Hirte
- Division of Pharmaceutical Chemistry, Department of Pharmaceutical Sciences, Faculty of Life Sciences, University of Vienna, 1090 Vienna, Austria;
| | - Oliver Burk
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, University of Tübingen, 70376 Stuttgart, Germany; (O.B.); (M.S.)
| | - Ammar Tahir
- Division of Pharmacognosy, Department of Pharmaceutical Sciences, Faculty of Life Sciences, University of Vienna, 1090 Vienna, Austria;
| | - Matthias Schwab
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, University of Tübingen, 70376 Stuttgart, Germany; (O.B.); (M.S.)
- Departments of Clinical Pharmacology and Biochemistry and Pharmacy, University of Tuebingen, 72074 Tübingen, Germany
- Cluster of Excellence IFIT (EXC 2180) “Image-Guided and Functionally Instructed Tumor Therapies”, University of Tübingen, 72074 Tübingen, Germany
| | - Björn Windshügel
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Discovery Research Screening Port, 22525 Hamburg, Germany;
- Department of Life Sciences and Chemistry, Jacobs University Bremen, 28759 Bremen, Germany
| | - Johannes Kirchmair
- Division of Pharmaceutical Chemistry, Department of Pharmaceutical Sciences, Faculty of Life Sciences, University of Vienna, 1090 Vienna, Austria;
- Correspondence: ; Tel.: +43-1-4277-55104
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9
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Gloor Y, Czarnetzki C, Curtin F, Gil-Wey B, Tramèr MR, Desmeules JA. Genetic Susceptibility Toward Nausea and Vomiting in Surgical Patients. Front Genet 2022; 12:816908. [PMID: 35173765 PMCID: PMC8842269 DOI: 10.3389/fgene.2021.816908] [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: 11/17/2021] [Accepted: 12/30/2021] [Indexed: 11/16/2022] Open
Abstract
Postoperative nausea and vomiting (PONV) are frequently occurring adverse effects following surgical procedures. Despite predictive risk scores and a pallet of prophylactic antiemetic treatments, it is still estimated to affect around 30% of the patients, reducing their well-being and increasing the burden of post-operative care. The aim of the current study was to characterize selected genetic risk factors of PONV to improve the identification of at risk patients. We genotyped 601 patients followed during the first 24 h after surgery for PONV symptoms in the absence of any antiemetic prophylaxis. These patients were recruited in the frame of a randomized, placebo controlled clinical study aiming to test the efficacy of dexamethasone as a treatment of established PONV. We examined the impact of selected single nucleotide polymorphisms (SNPs) located around 13 different genes and the predicted activity of 6 liver drug metabolizing enzymes from the cytochromes P450 family (CYP) on the occurrence and recurrence of PONV. Our genetic study confirms the importance of genetic variations in the type 3B serotonin receptor in the occurrence of PONV. Our modelling shows that integration of rs3782025 genotype in preoperative risk assessments may help improve the targeting of antiemetic prophylaxis towards patients at risk of PONV.
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Affiliation(s)
- Yvonne Gloor
- Division of Clinical Pharmacology and Toxicology, Department of Anesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals (HUG), Geneva, Switzerland
| | - Christoph Czarnetzki
- Division of Anesthesiology, Department of Anesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals (HUG), Geneva, Switzerland.,Division of Anesthesiology, Department of Anesthesiology, Intensive Care and Emergency Medicine, Ospedale Regionale di Lugano, Ente Ospedaliero Cantonale, Lugano, Switzerland
| | - François Curtin
- Division of Clinical Pharmacology and Toxicology, Department of Anesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals (HUG), Geneva, Switzerland.,Personalized Health Programs, Swiss Federal Institute of Technology Zurich (ETHZ), Zurich, Switzerland
| | - Béatrice Gil-Wey
- Division of Anesthesiology, Department of Anesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals (HUG), Geneva, Switzerland
| | - Martin R Tramèr
- Division of Anesthesiology, Department of Anesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals (HUG), Geneva, Switzerland
| | - Jules A Desmeules
- Division of Clinical Pharmacology and Toxicology, Department of Anesthesiology, Pharmacology, Intensive Care and Emergency Medicine, Geneva University Hospitals (HUG), Geneva, Switzerland
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10
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Dong Y, Xu Q, Li R, Tao Y, Zhang Q, Li J, Ma Z, Shen C, Zhong M, Wang Z, Qiu X. CYP3A7, CYP3A4, and CYP3A5 genetic polymorphisms in recipients rather than donors influence tacrolimus concentrations in the early stages after liver transplantation. Gene 2022; 809:146007. [PMID: 34688813 DOI: 10.1016/j.gene.2021.146007] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 09/30/2021] [Accepted: 10/08/2021] [Indexed: 01/10/2023]
Abstract
AIM The purpose of this study was to investigate the effect of CYP3A7, CYP3A4, and CYP3A5 genetic polymorphisms in liver transplant recipients and donors on tacrolimus concentrations in the early stages after liver transplantation. METHODS One hundred and thirty-eight liver transplant recipients and matched donors were genotyped for CYP3A7 (rs10211 and rs2257401), CYP3A4 (rs4646437 and rs2242480), and CYP3A5*3 (rs776746) polymorphisms. The relationships between dose-adjusted trough concentrations (C0/D) of tacrolimus and corresponding genotypes were investigated. RESULTS Recipient CYP3A polymorphisms were associated with tacrolimus concentrations. The CYP3A7 rs10211 AA carriers (186.2 vs 90.5, p < 0.001), CYP3A4 rs4646437 CC carriers (184.0 vs 88.8, p < 0.001), CYP3A4*1G rs2242480 CC carriers (189.8 vs 99.7, p < 0.001), and CYP3A5*3 rs776746 GG carriers (197.3 vs 86.0, p < 0.001) had an almost twofold increase in the tacrolimus C0/D compared to that of the non-carriers. We further investigated the effect of the combination of recipient (intestinal) and donor (hepatic) genotypes on tacrolimus concentrations. Regardless of the genotype of the matched donor, CYP3A7 rs10211, CYP3A4*1G (rs2242480), and CYP3A5*3 (rs776746) polymorphisms of recipients could affect tacrolimus concentrations. For the CYP3A4 rs4646437 polymorphisms, when the donor carried CYP3A4 rs4646437 CC, the recipient CYP3A4 rs4646437 polymorphism was associated with the C0/D of tacrolimus, and when the donor carried CYP3A4 rs4646437 CT/TT genotype, the recipient CYP3A4 rs4646437 polymorphism also affected on tacrolimus C0/D, although the effect was not significant. CONCLUSION The large inter-individual variation in tacrolimus concentrations in the early stages after liver transplantation is influenced by genetic polymorphisms of CYP3A7, CYP3A4, and CYP3A5. Recipient (intestinal) CYP3A7, CYP3A4, and CYP3A5 polymorphisms seem to contribute more to such variation than donors. Therefore, the detection of CYP3A polymorphisms in recipients could help to predict the tacrolimus starting dose in the early stages after liver transplantation.
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Affiliation(s)
- Yue Dong
- Department of Pharmacy, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China
| | - Qinxia Xu
- Department of Pharmacy, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai 200032, China
| | - Ruidong Li
- Department of General Surgery and Liver Transplant Center, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institute of Organ Transplant, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China
| | - Yifeng Tao
- Department of General Surgery and Liver Transplant Center, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institute of Organ Transplant, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China
| | - Quanbao Zhang
- Department of General Surgery and Liver Transplant Center, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institute of Organ Transplant, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China
| | - Jianhua Li
- Department of General Surgery and Liver Transplant Center, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institute of Organ Transplant, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China
| | - Zhenyu Ma
- Department of General Surgery and Liver Transplant Center, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institute of Organ Transplant, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China
| | - Conghuan Shen
- Department of General Surgery and Liver Transplant Center, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institute of Organ Transplant, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China
| | - Mingkang Zhong
- Department of Pharmacy, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China
| | - Zhengxin Wang
- Department of General Surgery and Liver Transplant Center, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institute of Organ Transplant, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China.
| | - Xiaoyan Qiu
- Department of Pharmacy, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China.
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11
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Qi G, Han C, Zhou Y, Wang X. Allele and genotype frequencies of CYP3A4, CYP3A5, CYP3A7, and GSTP1 gene polymorphisms among mainland Tibetan, Mongolian, Uyghur, and Han Chinese populations. Clin Exp Pharmacol Physiol 2021; 49:219-227. [PMID: 34689350 DOI: 10.1111/1440-1681.13604] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 10/19/2021] [Accepted: 10/20/2021] [Indexed: 01/06/2023]
Abstract
Over 50% prescribed drugs are metabolised by cytochrome P450 3A (CYP3A) and glutathione S-transferase pi (GSTP1) adds a glutathione to the oxidative products by CYP3A, which increases the hydrophilic property of metabolites and facilitates the excretion. Single nucleotide polymorphisms (SNPs) of CYP3A and GSTP1 show a diverse allele and genotype frequencies distribution among the world populations. The present study aimed to investigate the genotype and allele frequency distribution patterns of CYP3A4, CYP3A5, CYP3A7 and GSTP1 polymorphisms among healthy participants in mainland Tibetan, Mongolian, Uyghur, and Han Chinese populations. Blood samples were collected from 842 unrelated healthy subjects (323 Tibetan, 134 Mongolian, 162 Uyghur, and 223 Han) for genotyping analysis. Variant allele frequencies of CYP3A4 rs2242480, CYP3A5 rs776746, CYP3A7 rs2257401, and GSTP1 Ile105Val were observed in Han (0.253, 0.686, 0.312 and 0.188), Tibetan (0.186, 0.819, 0.192 and 0.173), Mongolian (0.198, 0.784, 0.228 and 0.235) and Uyghur (0.179, 0.858, 0.182 and 0.250) respectively. The allele frequency of CYP3A7*1C in Uyghur (0.019) was higher than that in Tibetan (0.002, p < 0.01). There was a strong linkage disequilibrium between CYP3A4 rs2242480, CYP3A5 rs776746, and CYP3A7 rs2257401 among the four ethnic groups. The results might be useful for the precise medication in the Chinese populations.
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Affiliation(s)
- Guangzhao Qi
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Department of Pharmacology, Basic Medical School, Peking University, Beijing, China
| | - Chao Han
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Yubing Zhou
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xin Wang
- Department of Pharmacology, Basic Medical School, Peking University, Beijing, China
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12
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El-Ghiaty MA, El-Kadi AO. Arsenic: Various species with different effects on cytochrome P450 regulation in humans. EXCLI JOURNAL 2021; 20:1184-1242. [PMID: 34512225 PMCID: PMC8419240 DOI: 10.17179/excli2021-3890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 07/02/2021] [Indexed: 11/22/2022]
Abstract
Arsenic is well-recognized as one of the most hazardous elements which is characterized by its omnipresence throughout the environment in various chemical forms. From the simple inorganic arsenite (iAsIII) and arsenate (iAsV) molecules, a multitude of more complex organic species are biologically produced through a process of metabolic transformation with biomethylation being the core of this process. Because of their differential toxicity, speciation of arsenic-based compounds is necessary for assessing health risks posed by exposure to individual species or co-exposure to several species. In this regard, exposure assessment is another pivotal factor that includes identification of the potential sources as well as routes of exposure. Identification of arsenic impact on different physiological organ systems, through understanding its behavior in the human body that leads to homeostatic derangements, is the key for developing strategies to mitigate its toxicity. Metabolic machinery is one of the sophisticated body systems targeted by arsenic. The prominent role of cytochrome P450 enzymes (CYPs) in the metabolism of both endobiotics and xenobiotics necessitates paying a great deal of attention to the possible effects of arsenic compounds on this superfamily of enzymes. Here we highlight the toxicologically relevant arsenic species with a detailed description of the different environmental sources as well as the possible routes of human exposure to these species. We also summarize the reported findings of experimental investigations evaluating the influence of various arsenicals on different members of CYP superfamily using human-based models.
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Affiliation(s)
- Mahmoud A. El-Ghiaty
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Ayman O.S. El-Kadi
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
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13
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Structural Basis for the Diminished Ligand Binding and Catalytic Ability of Human Fetal-Specific CYP3A7. Int J Mol Sci 2021; 22:ijms22115831. [PMID: 34072457 PMCID: PMC8198134 DOI: 10.3390/ijms22115831] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/19/2021] [Accepted: 05/26/2021] [Indexed: 02/07/2023] Open
Abstract
Cytochrome P450 3A7 (CYP3A7) is a fetal/neonatal liver enzyme that participates in estriol synthesis, clearance of all-trans retinoic acid, and xenobiotic metabolism. Compared to the closely related major drug-metabolizing enzyme in adult liver, CYP3A4, the ligand binding and catalytic capacity of CYP3A7 are substantially reduced. To better understand the structural basis for these functional differences, the 2.15 Å crystal structure of CYP3A7 has been solved. Comparative analysis of CYP3A enzymes shows that decreased structural plasticity rather than the active site microenvironment defines the ligand binding ability of CYP3A7. In particular, a rotameric switch in the gatekeeping amino acid F304 triggers local and long-range rearrangements that transmit to the F-G fragment and alter its interactions with the I-E-D-helical core, resulting in a more rigid structure. Elongation of the β3-β4 strands, H-bond linkage in the substrate channel, and steric constraints in the C-terminal loop further increase the active site rigidity and limit conformational ensemble. Collectively, these structural distinctions lower protein plasticity and change the heme environment, which, in turn, could impede the spin-state transition essential for optimal reactivity and oxidation of substrates.
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14
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Fanni D, Pinna F, Gerosa C, Paribello P, Carpiniello B, Faa G, Manchia M. Anatomical distribution and expression of CYP in humans: Neuropharmacological implications. Drug Dev Res 2021; 82:628-667. [PMID: 33533102 DOI: 10.1002/ddr.21778] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 12/21/2020] [Accepted: 12/23/2020] [Indexed: 12/14/2022]
Abstract
The cytochrome P450 (CYP450) superfamily is responsible for the metabolism of most xenobiotics and pharmacological treatments generally used in clinical settings. Genetic factors as well as environmental determinants acting through fine epigenetic mechanisms modulate the expression of CYP over the lifespan (fetal vs. infancy vs. adult phases) and in diverse organs. In addition, pathological processes might alter the expression of CYP. In this selective review, we sought to summarize the evidence on the expression of CYP focusing on three specific aspects: (a) the anatomical distribution of the expression in body districts relevant in terms of drug pharmacokinetics (liver, gut, and kidney) and pharmacodynamics, focusing for the latter on the brain, since this is the target organ of psychopharmacological agents; (b) the patterns of expression during developmental phases; and (c) the expression of CYP450 enzymes during pathological processes such as cancer. We showed that CYP isoforms show distinct patterns of expression depending on the body district and the specific developmental phases. Of particular relevance for neuropsychopharmacology is the complex regulatory mechanisms that significantly modulate the complexity of the pharmacokinetic regulation, including the concentration of specific CYP isoforms in distinct areas of the brain, where they could greatly affect local substrate and metabolite concentrations of drugs.
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Affiliation(s)
- Daniela Fanni
- Unit of Anatomic Pathology, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy.,Unit of Anatomic Pathology, University Hospital Agency of Cagliari, Cagliari, Italy
| | - Federica Pinna
- Section of Psychiatry, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy.,Unit of Clinical Psychiatry, University Hospital Agency of Cagliari, Cagliari, Italy
| | - Clara Gerosa
- Unit of Anatomic Pathology, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy.,Unit of Anatomic Pathology, University Hospital Agency of Cagliari, Cagliari, Italy
| | - Pasquale Paribello
- Section of Psychiatry, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy.,Unit of Clinical Psychiatry, University Hospital Agency of Cagliari, Cagliari, Italy
| | - Bernardo Carpiniello
- Section of Psychiatry, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy.,Unit of Clinical Psychiatry, University Hospital Agency of Cagliari, Cagliari, Italy
| | - Gavino Faa
- Unit of Anatomic Pathology, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy.,Unit of Anatomic Pathology, University Hospital Agency of Cagliari, Cagliari, Italy
| | - Mirko Manchia
- Section of Psychiatry, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy.,Unit of Clinical Psychiatry, University Hospital Agency of Cagliari, Cagliari, Italy.,Department of Pharmacology, Dalhousie University, Halifax, Nova Scotia, Canada
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15
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Burk O, Kronenberger T, Keminer O, Lee SML, Schiergens TS, Schwab M, Windshügel B. Nelfinavir and Its Active Metabolite M8 Are Partial Agonists and Competitive Antagonists of the Human Pregnane X Receptor. Mol Pharmacol 2021; 99:184-196. [PMID: 33483427 DOI: 10.1124/molpharm.120.000116] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 12/21/2020] [Indexed: 12/12/2022] Open
Abstract
The HIV protease inhibitor nelfinavir is currently being analyzed for repurposing as an anticancer drug for many different cancers because it exerts manifold off-target protein interactions, finally resulting in cancer cell death. Xenosensing pregnane X receptor (PXR), which also participates in the control of cancer cell proliferation and apoptosis, was previously shown to be activated by nelfinavir; however, the exact molecular mechanism is still unknown. The present study addresses the effects of nelfinavir and its major and pharmacologically active metabolite nelfinavir hydroxy-tert-butylamide (M8) on PXR to elucidate the underlying molecular mechanism. Molecular docking suggested direct binding to the PXR ligand-binding domain, which was confirmed experimentally by limited proteolytic digestion and competitive ligand-binding assays. Concentration-response analyses using cellular transactivation assays identified nelfinavir and M8 as partial agonists with EC50 values of 0.9 and 7.3 µM and competitive antagonists of rifampin-dependent induction with IC50 values of 7.5 and 25.3 µM, respectively. Antagonism exclusively resulted from binding into the PXR ligand-binding pocket. Impaired coactivator recruitment by nelfinavir as compared with the full agonist rifampin proved to be the underlying mechanism of both effects on PXR. Physiologic relevance of nelfinavir-dependent modulation of PXR activity was investigated in respectively treated primary human hepatocytes, which showed differential induction of PXR target genes and antagonism of rifampin-induced ABCB1 and CYP3A4 gene expression. In conclusion, we elucidate here the molecular mechanism of nelfinavir interaction with PXR. It is hypothesized that modulation of PXR activity may impact the anticancer effects of nelfinavir. SIGNIFICANCE STATEMENT: Nelfinavir, which is being investigated for repurposing as an anticancer medication, is shown here to directly bind to human pregnane X receptor (PXR) and thereby act as a partial agonist and competitive antagonist. Its major metabolite nelfinavir hydroxy-tert-butylamide exerts the same effects, which are based on impaired coactivator recruitment. Nelfinavir anticancer activity may involve modulation of PXR, which itself is discussed as a therapeutic target in cancer therapy and for the reversal of chemoresistance.
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Affiliation(s)
- Oliver Burk
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, and University of Tübingen, Tübingen, Germany (O.B., M.S.); Fraunhofer Institute for Molecular Biology and Applied Ecology IME, ScreeningPort, Hamburg, Germany (T.K., O.K., B.W.); Biobank of the Department of General, Visceral, and Transplantion Surgery, University Hospital, Ludwig-Maximilians University, Munich, Munich, Germany (S.M.L.L., T.S.S.); Departments of Clinical Pharmacology, and Pharmacy and Biochemistry, University of Tübingen, Tübingen, Germany (M.S.); and Department of Chemistry, Institute for Biochemistry and Molecular Biology, Universität Hamburg, Hamburg, Germany (B.W.)
| | - Thales Kronenberger
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, and University of Tübingen, Tübingen, Germany (O.B., M.S.); Fraunhofer Institute for Molecular Biology and Applied Ecology IME, ScreeningPort, Hamburg, Germany (T.K., O.K., B.W.); Biobank of the Department of General, Visceral, and Transplantion Surgery, University Hospital, Ludwig-Maximilians University, Munich, Munich, Germany (S.M.L.L., T.S.S.); Departments of Clinical Pharmacology, and Pharmacy and Biochemistry, University of Tübingen, Tübingen, Germany (M.S.); and Department of Chemistry, Institute for Biochemistry and Molecular Biology, Universität Hamburg, Hamburg, Germany (B.W.)
| | - Oliver Keminer
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, and University of Tübingen, Tübingen, Germany (O.B., M.S.); Fraunhofer Institute for Molecular Biology and Applied Ecology IME, ScreeningPort, Hamburg, Germany (T.K., O.K., B.W.); Biobank of the Department of General, Visceral, and Transplantion Surgery, University Hospital, Ludwig-Maximilians University, Munich, Munich, Germany (S.M.L.L., T.S.S.); Departments of Clinical Pharmacology, and Pharmacy and Biochemistry, University of Tübingen, Tübingen, Germany (M.S.); and Department of Chemistry, Institute for Biochemistry and Molecular Biology, Universität Hamburg, Hamburg, Germany (B.W.)
| | - Serene M L Lee
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, and University of Tübingen, Tübingen, Germany (O.B., M.S.); Fraunhofer Institute for Molecular Biology and Applied Ecology IME, ScreeningPort, Hamburg, Germany (T.K., O.K., B.W.); Biobank of the Department of General, Visceral, and Transplantion Surgery, University Hospital, Ludwig-Maximilians University, Munich, Munich, Germany (S.M.L.L., T.S.S.); Departments of Clinical Pharmacology, and Pharmacy and Biochemistry, University of Tübingen, Tübingen, Germany (M.S.); and Department of Chemistry, Institute for Biochemistry and Molecular Biology, Universität Hamburg, Hamburg, Germany (B.W.)
| | - Tobias S Schiergens
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, and University of Tübingen, Tübingen, Germany (O.B., M.S.); Fraunhofer Institute for Molecular Biology and Applied Ecology IME, ScreeningPort, Hamburg, Germany (T.K., O.K., B.W.); Biobank of the Department of General, Visceral, and Transplantion Surgery, University Hospital, Ludwig-Maximilians University, Munich, Munich, Germany (S.M.L.L., T.S.S.); Departments of Clinical Pharmacology, and Pharmacy and Biochemistry, University of Tübingen, Tübingen, Germany (M.S.); and Department of Chemistry, Institute for Biochemistry and Molecular Biology, Universität Hamburg, Hamburg, Germany (B.W.)
| | - Matthias Schwab
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, and University of Tübingen, Tübingen, Germany (O.B., M.S.); Fraunhofer Institute for Molecular Biology and Applied Ecology IME, ScreeningPort, Hamburg, Germany (T.K., O.K., B.W.); Biobank of the Department of General, Visceral, and Transplantion Surgery, University Hospital, Ludwig-Maximilians University, Munich, Munich, Germany (S.M.L.L., T.S.S.); Departments of Clinical Pharmacology, and Pharmacy and Biochemistry, University of Tübingen, Tübingen, Germany (M.S.); and Department of Chemistry, Institute for Biochemistry and Molecular Biology, Universität Hamburg, Hamburg, Germany (B.W.)
| | - Björn Windshügel
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, and University of Tübingen, Tübingen, Germany (O.B., M.S.); Fraunhofer Institute for Molecular Biology and Applied Ecology IME, ScreeningPort, Hamburg, Germany (T.K., O.K., B.W.); Biobank of the Department of General, Visceral, and Transplantion Surgery, University Hospital, Ludwig-Maximilians University, Munich, Munich, Germany (S.M.L.L., T.S.S.); Departments of Clinical Pharmacology, and Pharmacy and Biochemistry, University of Tübingen, Tübingen, Germany (M.S.); and Department of Chemistry, Institute for Biochemistry and Molecular Biology, Universität Hamburg, Hamburg, Germany (B.W.)
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16
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Carr DF, Turner RM, Pirmohamed M. Pharmacogenomics of anticancer drugs: Personalising the choice and dose to manage drug response. Br J Clin Pharmacol 2020; 87:237-255. [PMID: 32501544 DOI: 10.1111/bcp.14407] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/11/2020] [Accepted: 05/22/2020] [Indexed: 12/13/2022] Open
Abstract
The field of pharmacogenomics has made great strides in oncology over the last 20 years and indeed a significant number of pre-emptive genetic tests are now routinely undertaken prior to anticancer drug administration. Many of these gene-drug interactions are the fruits of candidate gene and genome-wide association studies, which have largely focused on common genetic variants (allele frequency>1%). Examples where there is clinical utility include genotyping or phenotyping for G6PD to prevent rasburicase-induced RBC haemolysis, and TPMT to prevent thiopurine-induced bone marrow suppression. Other associations such as CYP2D6 status in determining the efficacy of tamoxifen are more controversial because of contradictory evidence from different sources, which has led to variability in the implementation of testing. As genomic technology becomes ever cheaper and more accessible, we must look to the additional data our genome can provide to explain interindividual variability in anticancer drug response. Clearly genes do not act on their own and it is therefore important to investigate genetic factors in conjunction with clinical factors, interacting concomitant drug therapies and other factors such as the microbiome, which can all affect drug disposition. Taking account of all of these factors, in conjunction with the somatic genome, is more likely to provide better predictive accuracy in determining anticancer drug response, both efficacy and safety. This review summarises the existing knowledge related to the pharmacogenomics of anticancer drugs and discusses areas of opportunity for further advances in personalisation of therapy in order to improve both drug safety and efficacy.
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Affiliation(s)
- Daniel F Carr
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, UK
| | - Richard M Turner
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, UK
| | - Munir Pirmohamed
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, UK
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Turner RM, Fontana V, Zhang JE, Carr D, Yin P, FitzGerald R, Morris AP, Pirmohamed M. A Genome-wide Association Study of Circulating Levels of Atorvastatin and Its Major Metabolites. Clin Pharmacol Ther 2020; 108:287-297. [PMID: 32128760 DOI: 10.1002/cpt.1820] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 01/28/2020] [Indexed: 01/03/2023]
Abstract
Atorvastatin (ATV) is frequently prescribed and generally well tolerated, but can lead to myotoxicity, especially at higher doses. A genome-wide association study of circulating levels of ATV, 2-hydroxy (2-OH) ATV, ATV lactone (ATV L), and 2-OH ATV L was performed in 590 patients who had been hospitalized with a non-ST elevation acute coronary syndrome 1 month earlier and were on high-dose ATV (80 mg or 40 mg daily). The UGT1A locus (lead single nucleotide polymorphism, rs887829) was strongly associated with both increased 2-OH ATV/ATV (P = 7.25 × 10-16 ) and 2-OH ATV L/ATV L (P = 3.95 × 10-15 ) metabolic ratios. Moreover, rs45446698, which tags CYP3A7*1C, was nominally associated with increased 2-OH ATV/ATV (P = 6.18 × 10-7 ), and SLCO1B1 rs4149056 with increased ATV (P = 2.21 × 10-6 ) and 2-OH ATV (P = 1.09 × 10-6 ) levels. In a subset of these patients whose levels of ATV and metabolites had also been measured at 12 months after hospitalization (n = 149), all of these associations remained, except for 2-OH ATV and rs4149056 (P = 0.057). Clinically, rs4149056 was associated with increased muscular symptoms (odds ratio (OR) 3.97; 95% confidence interval (CI) 1.29-12.27; P = 0.016) and ATV intolerance (OR 1.55; 95% CI 1.09-2.19; P = 0.014) in patients (n = 870) primarily discharged on high-dose ATV. In summary, both novel and recognized genetic associations have been identified with circulating levels of ATV and its major metabolites. Further study is warranted to determine the clinical utility of genotyping rs4149056 in patients on high-dose ATV.
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Affiliation(s)
- Richard M Turner
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, UK
| | - Vanessa Fontana
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, UK
| | - Jieying E Zhang
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, UK
| | - Daniel Carr
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, UK
| | - Peng Yin
- Department of Biostatistics, University of Liverpool, Liverpool, UK.,Chinese Academy of Sciences, Shenzhen Institutes of Advanced Technology, Shenzhen, China
| | - Richard FitzGerald
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, UK
| | - Andrew P Morris
- Department of Biostatistics, University of Liverpool, Liverpool, UK.,Division of Musculoskeletal and Dermatological Sciences, University of Manchester, Manchester, UK
| | - Munir Pirmohamed
- Department of Molecular and Clinical Pharmacology, University of Liverpool, Liverpool, UK
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Han JM, Yee J, Chung JE, Lee KE, Park K, Gwak HS. Effects of cytochrome P450 oxidoreductase genotypes on the pharmacokinetics of amlodipine in healthy Korean subjects. Mol Genet Genomic Med 2020; 8:e1201. [PMID: 32134573 PMCID: PMC7216797 DOI: 10.1002/mgg3.1201] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 02/16/2020] [Accepted: 02/21/2020] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND The aim of this study was to investigate the effects of P450 oxidoreductase (POR) genetic polymorphisms on the pharmacokinetic parameters of amlodipine. METHODS After a single 10-mg dose of amlodipine administration, 25 healthy male subjects completed genotyping for 12 single nucleotide polymorphisms (SNPs) of the POR genes, cytochrome P450 (CYP)3A4 g.25343G>A (CYP3A4*1G), and CYP3A5 g.12083G>A (CYP3A5*3). Stratified analysis and in silico analysis to predict the possible effects of given variants on splicing were performed. RESULTS The maximum blood concentration (Cmax ) of amlodipine in carriers of g.57332T>C and g.56551G>A SNPs of the POR gene was statistically significantly different. In addition, T-allele carriers of g.57332T>C had a 21% higher Cmax than those with the CC genotype (p = .007). Subjects who carried the wild-type g.56551G>A allele also had a 1.12-fold significantly higher Cmax than subjects with mutant-type homozygous carriers (p = .033). In stratified analyses, g.57332T>C was significantly associated with a 1.3-fold increase in Cmax value in T-allele carriers compared with subjects with the CC genotype in CYP3A4 and CYP3A5 expressers. POR g.57332T>C increased the score above the threshold in both ESEfinder 3.0 and HSF 3.1. CONCLUSION This study identified a novel SNP of the POR gene, which affected amlodipine metabolism and may reduce interindividual variation in responses to amlodipine.
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Affiliation(s)
- Ji Min Han
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, Republic of Korea
| | - Jeong Yee
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, Republic of Korea
| | - Jee Eun Chung
- College of Pharmacy, Hanyang University, Ansan, Republic of Korea
| | - Kyung Eun Lee
- College of Pharmacy, Chungbuk National University, Cheongju-si, Republic of Korea
| | - Kyungsoo Park
- Department of Pharmacology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hye Sun Gwak
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, Republic of Korea
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Banerjee BD, Kumar R, Thamineni KL, Shah H, Thakur GK, Sharma T. Effect of Environmental Exposure and Pharmacogenomics on Drug Metabolism. Curr Drug Metab 2020; 20:1103-1113. [PMID: 31933442 DOI: 10.2174/1389200221666200110153304] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 11/02/2019] [Accepted: 01/03/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND Pesticides are major xenobiotic compounds and environmental pollutants, which are able to alter drug-metabolizing enzyme as well as pharmacokinetics of drugs. Subsequent to the release of the human genome project, genetic variations (polymorphism) become an integral part of drug development due to their influence on disease susceptibility/ progression of the disease and their impact on drug absorption, distribution, metabolism of active metabolites and finally excretion of the drug. Genetic polymorphisms crucially regulate pharmacokinetics and pharmacodynamics of drugs under the influence of physiological condition, lifestyle, as well as pathological conditions collectively. OBJECTIVE To review all the evidence concerning the effect of environmental exposure on drug metabolism with reference to pharmacogenomics. METHODS Scientific data search and review of basic, epidemiological, pharmacogenomics and pharmacokinetics studies were undertaken to evaluate the influence of environmental contaminants on drug metabolism. RESULTS Various environmental contaminants like pesticides effectively alter drug metabolism at various levels under the influence of pharmacogenomics, which interferes with pharmacokinetics of drug metabolism. Genetic polymorphism of phase I and phase II xenobiotic-metabolizing enzymes remarkably alters disease susceptibility as well as the progression of disease under the influence of various environmental contaminants at various levels. CONCLUSION Individual specific drug response may be attributed to a large variety of factors alone or in combination ranging from genetic variations (SNP, insertion, deletion, duplication etc.) to physiological setting (gender, age, body size, and ethnicity), environmental or lifestyle factors (radiation exposure, smoking, alcohol, nutrition, exposure to toxins, etc.); and pathological conditions (obesity, diabetes, liver and renal function).
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Affiliation(s)
- Basu Dev Banerjee
- Environmental Biochemistry and Molecular Biology Laboratory, Department of Biochemistry, University College of Medical Sciences and GTB Hospital (University of Delhi), Dilshad Garden, Delhi-110095, India
| | - Ranjeet Kumar
- Environmental Biochemistry and Molecular Biology Laboratory, Department of Biochemistry, University College of Medical Sciences and GTB Hospital (University of Delhi), Dilshad Garden, Delhi-110095, India
| | - Krishna Latha Thamineni
- Environmental Biochemistry and Molecular Biology Laboratory, Department of Biochemistry, University College of Medical Sciences and GTB Hospital (University of Delhi), Dilshad Garden, Delhi-110095, India
| | - Harendra Shah
- Environmental Biochemistry and Molecular Biology Laboratory, Department of Biochemistry, University College of Medical Sciences and GTB Hospital (University of Delhi), Dilshad Garden, Delhi-110095, India
| | - Gaurav Kumar Thakur
- Environmental Biochemistry and Molecular Biology Laboratory, Department of Biochemistry, University College of Medical Sciences and GTB Hospital (University of Delhi), Dilshad Garden, Delhi-110095, India
| | - Tusha Sharma
- Environmental Biochemistry and Molecular Biology Laboratory, Department of Biochemistry, University College of Medical Sciences and GTB Hospital (University of Delhi), Dilshad Garden, Delhi-110095, India
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20
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Role of vitamin D receptor in the regulation of CYP3A gene expression. Acta Pharm Sin B 2019; 9:1087-1098. [PMID: 31867158 PMCID: PMC6900549 DOI: 10.1016/j.apsb.2019.03.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 02/28/2019] [Accepted: 03/15/2019] [Indexed: 12/17/2022] Open
Abstract
Vitamin D3 (VD3) is a multifunctional nutrient which can be either synthesized or absorbed from the diet. It plays a pivotal role in systemic calcium and phosphate homeostasis, as well as in various physiological and pathological processes. VD3 is converted to the active form, 1α,25-dihydroxyvitamin D3 (1,25-D3), by cytochrome P450 2R1 (CYP2R1)/CYP27A1 and CYP27B1 sequentially, and deactivated by multiple enzymes including CYP3A4. On the other hand, 1,25-D3 is capable of activating the transcription of CYP3A genes in humans, mice and rats. The vitamin D receptor (VDR)-mediated transactivation of human CYP3A4 and CYP3A5 resembles that known for pregnane X receptor (PXR). Activated VDR forms a heterodimer with retinoid X receptor α (RXRα), recruits co-activators, translocates to the cell nucleus, binds to the specific vitamin D responsive elements (VDRE), and activates the gene transcription. In mice, intestinal Cyp3a11 mRNA levels, but not those of hepatic CYP3As, were induced by in vivo administration of VDR and PXR agonists. In rats, intestinal Cyp3a1 and Cyp3a2 mRNAs were induced by 1,25-D3 or lithocholic acid (LCA), whereas hepatic Cyp3a2, but not Cyp3a1 and Cyp3a9, was modulated to 1,25-D3 treatment. In general, the VDR-mediated regulation of CYP3A presents species and organ specificity.
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Li H, Lampe JN. Neonatal cytochrome P450 CYP3A7: A comprehensive review of its role in development, disease, and xenobiotic metabolism. Arch Biochem Biophys 2019; 673:108078. [PMID: 31445893 DOI: 10.1016/j.abb.2019.108078] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 08/17/2019] [Accepted: 08/18/2019] [Indexed: 12/14/2022]
Abstract
The human cytochrome P450 CYP3A7, once thought to be an enzyme exclusive to fetal livers, has more recently been identified in neonates and developing infants as old as 24 months post-gestational age. CYP3A7 has been demonstrated to metabolize two endogenous compounds that are known to be important in the growth and development of the fetus and neonate, namely dehydroepiandrosterone sulfate (DHEA-S) and all-trans retinoic acid (atRA). In addition, it is also known to metabolize a variety of drugs and xenobiotics, albeit generally to a lesser extent relative to CYP3A4/5. CYP3A7 is an important component in the development and protection of the fetal liver and additionally plays a role in certain disease states, such as cancer and adrenal hyperplasia. Ultimately, a full understanding of the expression, regulation, and metabolic properties of CYP3A7 is needed to provide neonates with appropriate individualized pharmacotherapy. This article summarizes the current state of knowledge of CYP3A7, including its discovery, distribution, alleles, RNA splicing, expression and regulation, metabolic properties, substrates, and inhibitors.
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Affiliation(s)
- Haixing Li
- Sino-German Joint Research Institute Nanchang University, 235 East Nanjing Road, Nanchang, 330047, Jiangxi, PR China
| | - Jed N Lampe
- University of Colorado, Skaggs School of Pharmacy and Pharmaceutical Sciences, Department of Pharmaceutical Sciences, Mail Stop C238, 12850 E. Montview Blvd., Aurora, CO, 80045, USA.
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CYP3A5 and CYP3A7 genetic polymorphisms affect tacrolimus concentration in pediatric patients with nephrotic range proteinuria. Eur J Clin Pharmacol 2019; 75:1533-1540. [DOI: 10.1007/s00228-019-02726-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 07/17/2019] [Indexed: 01/02/2023]
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23
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Zhang J, Gao LZ, Chen YJ, Zhu PP, Yin SS, Su MM, Ni Y, Miao J, Wu WL, Chen H, Brouwer KLR, Liu CX, Xu L, Jia W, Lan K. Continuum of Host-Gut Microbial Co-metabolism: Host CYP3A4/3A7 are Responsible for Tertiary Oxidations of Deoxycholate Species. Drug Metab Dispos 2019; 47:283-294. [PMID: 30606729 PMCID: PMC6378331 DOI: 10.1124/dmd.118.085670] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 12/31/2018] [Indexed: 02/05/2023] Open
Abstract
The gut microbiota modifies endogenous primary bile acids (BAs) to produce exogenous secondary BAs, which may be further metabolized by cytochrome P450 enzymes (P450s). Our primary aim was to examine how the host adapts to the stress of microbe-derived secondary BAs by P450-mediated oxidative modifications on the steroid nucleus. Five unconjugated tri-hydroxyl BAs that were structurally and/or biologically associated with deoxycholate (DCA) were determined in human biologic samples by liquid chromatography-tandem mass spectrometry in combination with enzyme-digestion techniques. They were identified as DCA-19-ol, DCA-6β-ol, DCA-5β-ol, DCA-6α-ol, DCA-1β-ol, and DCA-4β-ol based on matching in-laboratory synthesized standards. Metabolic inhibition assays in human liver microsomes and recombinant P450 assays revealed that CYP3A4 and CYP3A7 were responsible for the regioselective oxidations of both DCA and its conjugated forms, glycodeoxycholate (GDCA) and taurodeoxycholate (TDCA). The modification of secondary BAs to tertiary BAs defines a host liver (primary BAs)-gut microbiota (secondary BAs)-host liver (tertiary BAs) axis. The regioselective oxidations of DCA, GDCA, and TDCA by CYP3A4 and CYP3A7 may help eliminate host-toxic DCA species. The 19- and 4β-hydroxylation of DCA species demonstrated outstanding CYP3A7 selectivity and may be useful as indicators of CYP3A7 activity.
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Affiliation(s)
- Jian Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, China (J.Z., L.Z.G., Y.J.C., P.P.Z., S.S.Y., L.X., K.L.); Metabolomics Shared Resource, University of Hawaii Cancer Center, Honolulu, Hawaii (M.M.S., Y.N., W.J.); Institute of Clinical Pharmacology, West China Hospital, Sichuan University, Chengdu, China (J.M.); Chengdu Institutes for Food and Drug Control, Chengdu, China (W.L.W., H.C.); UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, North Carolina (K.L.R.B.); State Key Laboratory of Drug Delivery Technology and Pharmacokinetics, Tianjin Institute of Pharmaceutical Research, Tianjin, China (C.X.L.); and Chengdu Health-Balance Medical Technology Co., Ltd., Chengdu, China (S.S.Y.)
| | - Ling-Zhi Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, China (J.Z., L.Z.G., Y.J.C., P.P.Z., S.S.Y., L.X., K.L.); Metabolomics Shared Resource, University of Hawaii Cancer Center, Honolulu, Hawaii (M.M.S., Y.N., W.J.); Institute of Clinical Pharmacology, West China Hospital, Sichuan University, Chengdu, China (J.M.); Chengdu Institutes for Food and Drug Control, Chengdu, China (W.L.W., H.C.); UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, North Carolina (K.L.R.B.); State Key Laboratory of Drug Delivery Technology and Pharmacokinetics, Tianjin Institute of Pharmaceutical Research, Tianjin, China (C.X.L.); and Chengdu Health-Balance Medical Technology Co., Ltd., Chengdu, China (S.S.Y.)
| | - Yu-Jie Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, China (J.Z., L.Z.G., Y.J.C., P.P.Z., S.S.Y., L.X., K.L.); Metabolomics Shared Resource, University of Hawaii Cancer Center, Honolulu, Hawaii (M.M.S., Y.N., W.J.); Institute of Clinical Pharmacology, West China Hospital, Sichuan University, Chengdu, China (J.M.); Chengdu Institutes for Food and Drug Control, Chengdu, China (W.L.W., H.C.); UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, North Carolina (K.L.R.B.); State Key Laboratory of Drug Delivery Technology and Pharmacokinetics, Tianjin Institute of Pharmaceutical Research, Tianjin, China (C.X.L.); and Chengdu Health-Balance Medical Technology Co., Ltd., Chengdu, China (S.S.Y.)
| | - Ping-Ping Zhu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, China (J.Z., L.Z.G., Y.J.C., P.P.Z., S.S.Y., L.X., K.L.); Metabolomics Shared Resource, University of Hawaii Cancer Center, Honolulu, Hawaii (M.M.S., Y.N., W.J.); Institute of Clinical Pharmacology, West China Hospital, Sichuan University, Chengdu, China (J.M.); Chengdu Institutes for Food and Drug Control, Chengdu, China (W.L.W., H.C.); UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, North Carolina (K.L.R.B.); State Key Laboratory of Drug Delivery Technology and Pharmacokinetics, Tianjin Institute of Pharmaceutical Research, Tianjin, China (C.X.L.); and Chengdu Health-Balance Medical Technology Co., Ltd., Chengdu, China (S.S.Y.)
| | - Shan-Shan Yin
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, China (J.Z., L.Z.G., Y.J.C., P.P.Z., S.S.Y., L.X., K.L.); Metabolomics Shared Resource, University of Hawaii Cancer Center, Honolulu, Hawaii (M.M.S., Y.N., W.J.); Institute of Clinical Pharmacology, West China Hospital, Sichuan University, Chengdu, China (J.M.); Chengdu Institutes for Food and Drug Control, Chengdu, China (W.L.W., H.C.); UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, North Carolina (K.L.R.B.); State Key Laboratory of Drug Delivery Technology and Pharmacokinetics, Tianjin Institute of Pharmaceutical Research, Tianjin, China (C.X.L.); and Chengdu Health-Balance Medical Technology Co., Ltd., Chengdu, China (S.S.Y.)
| | - Ming-Ming Su
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, China (J.Z., L.Z.G., Y.J.C., P.P.Z., S.S.Y., L.X., K.L.); Metabolomics Shared Resource, University of Hawaii Cancer Center, Honolulu, Hawaii (M.M.S., Y.N., W.J.); Institute of Clinical Pharmacology, West China Hospital, Sichuan University, Chengdu, China (J.M.); Chengdu Institutes for Food and Drug Control, Chengdu, China (W.L.W., H.C.); UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, North Carolina (K.L.R.B.); State Key Laboratory of Drug Delivery Technology and Pharmacokinetics, Tianjin Institute of Pharmaceutical Research, Tianjin, China (C.X.L.); and Chengdu Health-Balance Medical Technology Co., Ltd., Chengdu, China (S.S.Y.)
| | - Yan Ni
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, China (J.Z., L.Z.G., Y.J.C., P.P.Z., S.S.Y., L.X., K.L.); Metabolomics Shared Resource, University of Hawaii Cancer Center, Honolulu, Hawaii (M.M.S., Y.N., W.J.); Institute of Clinical Pharmacology, West China Hospital, Sichuan University, Chengdu, China (J.M.); Chengdu Institutes for Food and Drug Control, Chengdu, China (W.L.W., H.C.); UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, North Carolina (K.L.R.B.); State Key Laboratory of Drug Delivery Technology and Pharmacokinetics, Tianjin Institute of Pharmaceutical Research, Tianjin, China (C.X.L.); and Chengdu Health-Balance Medical Technology Co., Ltd., Chengdu, China (S.S.Y.)
| | - Jia Miao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, China (J.Z., L.Z.G., Y.J.C., P.P.Z., S.S.Y., L.X., K.L.); Metabolomics Shared Resource, University of Hawaii Cancer Center, Honolulu, Hawaii (M.M.S., Y.N., W.J.); Institute of Clinical Pharmacology, West China Hospital, Sichuan University, Chengdu, China (J.M.); Chengdu Institutes for Food and Drug Control, Chengdu, China (W.L.W., H.C.); UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, North Carolina (K.L.R.B.); State Key Laboratory of Drug Delivery Technology and Pharmacokinetics, Tianjin Institute of Pharmaceutical Research, Tianjin, China (C.X.L.); and Chengdu Health-Balance Medical Technology Co., Ltd., Chengdu, China (S.S.Y.)
| | - Wen-Lin Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, China (J.Z., L.Z.G., Y.J.C., P.P.Z., S.S.Y., L.X., K.L.); Metabolomics Shared Resource, University of Hawaii Cancer Center, Honolulu, Hawaii (M.M.S., Y.N., W.J.); Institute of Clinical Pharmacology, West China Hospital, Sichuan University, Chengdu, China (J.M.); Chengdu Institutes for Food and Drug Control, Chengdu, China (W.L.W., H.C.); UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, North Carolina (K.L.R.B.); State Key Laboratory of Drug Delivery Technology and Pharmacokinetics, Tianjin Institute of Pharmaceutical Research, Tianjin, China (C.X.L.); and Chengdu Health-Balance Medical Technology Co., Ltd., Chengdu, China (S.S.Y.)
| | - Hong Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, China (J.Z., L.Z.G., Y.J.C., P.P.Z., S.S.Y., L.X., K.L.); Metabolomics Shared Resource, University of Hawaii Cancer Center, Honolulu, Hawaii (M.M.S., Y.N., W.J.); Institute of Clinical Pharmacology, West China Hospital, Sichuan University, Chengdu, China (J.M.); Chengdu Institutes for Food and Drug Control, Chengdu, China (W.L.W., H.C.); UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, North Carolina (K.L.R.B.); State Key Laboratory of Drug Delivery Technology and Pharmacokinetics, Tianjin Institute of Pharmaceutical Research, Tianjin, China (C.X.L.); and Chengdu Health-Balance Medical Technology Co., Ltd., Chengdu, China (S.S.Y.)
| | - Kim L R Brouwer
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, China (J.Z., L.Z.G., Y.J.C., P.P.Z., S.S.Y., L.X., K.L.); Metabolomics Shared Resource, University of Hawaii Cancer Center, Honolulu, Hawaii (M.M.S., Y.N., W.J.); Institute of Clinical Pharmacology, West China Hospital, Sichuan University, Chengdu, China (J.M.); Chengdu Institutes for Food and Drug Control, Chengdu, China (W.L.W., H.C.); UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, North Carolina (K.L.R.B.); State Key Laboratory of Drug Delivery Technology and Pharmacokinetics, Tianjin Institute of Pharmaceutical Research, Tianjin, China (C.X.L.); and Chengdu Health-Balance Medical Technology Co., Ltd., Chengdu, China (S.S.Y.)
| | - Chang-Xiao Liu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, China (J.Z., L.Z.G., Y.J.C., P.P.Z., S.S.Y., L.X., K.L.); Metabolomics Shared Resource, University of Hawaii Cancer Center, Honolulu, Hawaii (M.M.S., Y.N., W.J.); Institute of Clinical Pharmacology, West China Hospital, Sichuan University, Chengdu, China (J.M.); Chengdu Institutes for Food and Drug Control, Chengdu, China (W.L.W., H.C.); UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, North Carolina (K.L.R.B.); State Key Laboratory of Drug Delivery Technology and Pharmacokinetics, Tianjin Institute of Pharmaceutical Research, Tianjin, China (C.X.L.); and Chengdu Health-Balance Medical Technology Co., Ltd., Chengdu, China (S.S.Y.)
| | - Liang Xu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, China (J.Z., L.Z.G., Y.J.C., P.P.Z., S.S.Y., L.X., K.L.); Metabolomics Shared Resource, University of Hawaii Cancer Center, Honolulu, Hawaii (M.M.S., Y.N., W.J.); Institute of Clinical Pharmacology, West China Hospital, Sichuan University, Chengdu, China (J.M.); Chengdu Institutes for Food and Drug Control, Chengdu, China (W.L.W., H.C.); UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, North Carolina (K.L.R.B.); State Key Laboratory of Drug Delivery Technology and Pharmacokinetics, Tianjin Institute of Pharmaceutical Research, Tianjin, China (C.X.L.); and Chengdu Health-Balance Medical Technology Co., Ltd., Chengdu, China (S.S.Y.)
| | - Wei Jia
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, China (J.Z., L.Z.G., Y.J.C., P.P.Z., S.S.Y., L.X., K.L.); Metabolomics Shared Resource, University of Hawaii Cancer Center, Honolulu, Hawaii (M.M.S., Y.N., W.J.); Institute of Clinical Pharmacology, West China Hospital, Sichuan University, Chengdu, China (J.M.); Chengdu Institutes for Food and Drug Control, Chengdu, China (W.L.W., H.C.); UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, North Carolina (K.L.R.B.); State Key Laboratory of Drug Delivery Technology and Pharmacokinetics, Tianjin Institute of Pharmaceutical Research, Tianjin, China (C.X.L.); and Chengdu Health-Balance Medical Technology Co., Ltd., Chengdu, China (S.S.Y.)
| | - Ke Lan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, Sichuan University, Chengdu, China (J.Z., L.Z.G., Y.J.C., P.P.Z., S.S.Y., L.X., K.L.); Metabolomics Shared Resource, University of Hawaii Cancer Center, Honolulu, Hawaii (M.M.S., Y.N., W.J.); Institute of Clinical Pharmacology, West China Hospital, Sichuan University, Chengdu, China (J.M.); Chengdu Institutes for Food and Drug Control, Chengdu, China (W.L.W., H.C.); UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, North Carolina (K.L.R.B.); State Key Laboratory of Drug Delivery Technology and Pharmacokinetics, Tianjin Institute of Pharmaceutical Research, Tianjin, China (C.X.L.); and Chengdu Health-Balance Medical Technology Co., Ltd., Chengdu, China (S.S.Y.)
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24
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Beaumont RN, Warrington NM, Cavadino A, Tyrrell J, Nodzenski M, Horikoshi M, Geller F, Myhre R, Richmond RC, Paternoster L, Bradfield JP, Kreiner-Møller E, Huikari V, Metrustry S, Lunetta KL, Painter JN, Hottenga JJ, Allard C, Barton SJ, Espinosa A, Marsh JA, Potter C, Zhang G, Ang W, Berry DJ, Bouchard L, Das S, Hakonarson H, Heikkinen J, Helgeland Ø, Hocher B, Hofman A, Inskip HM, Jones SE, Kogevinas M, Lind PA, Marullo L, Medland SE, Murray A, Murray JC, Njølstad PR, Nohr EA, Reichetzeder C, Ring SM, Ruth KS, Santa-Marina L, Scholtens DM, Sebert S, Sengpiel V, Tuke MA, Vaudel M, Weedon MN, Willemsen G, Wood AR, Yaghootkar H, Muglia LJ, Bartels M, Relton CL, Pennell CE, Chatzi L, Estivill X, Holloway JW, Boomsma DI, Montgomery GW, Murabito JM, Spector TD, Power C, Järvelin MR, Bisgaard H, Grant SFA, Sørensen TIA, Jaddoe VW, Jacobsson B, Melbye M, McCarthy MI, Hattersley AT, Hayes MG, Frayling TM, Hivert MF, Felix JF, Hyppönen E, Lowe WL, Evans DM, Lawlor DA, Feenstra B, Freathy RM. Genome-wide association study of offspring birth weight in 86 577 women identifies five novel loci and highlights maternal genetic effects that are independent of fetal genetics. Hum Mol Genet 2019; 27:742-756. [PMID: 29309628 PMCID: PMC5886200 DOI: 10.1093/hmg/ddx429] [Citation(s) in RCA: 122] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 12/15/2017] [Indexed: 12/22/2022] Open
Abstract
Genome-wide association studies of birth weight have focused on fetal genetics, whereas relatively little is known about the role of maternal genetic variation. We aimed to identify maternal genetic variants associated with birth weight that could highlight potentially relevant maternal determinants of fetal growth. We meta-analysed data on up to 8.7 million SNPs in up to 86 577 women of European descent from the Early Growth Genetics (EGG) Consortium and the UK Biobank. We used structural equation modelling (SEM) and analyses of mother–child pairs to quantify the separate maternal and fetal genetic effects. Maternal SNPs at 10 loci (MTNR1B, HMGA2, SH2B3, KCNAB1, L3MBTL3, GCK, EBF1, TCF7L2, ACTL9, CYP3A7) were associated with offspring birth weight at P < 5 × 10−8. In SEM analyses, at least 7 of the 10 associations were consistent with effects of the maternal genotype acting via the intrauterine environment, rather than via effects of shared alleles with the fetus. Variants, or correlated proxies, at many of the loci had been previously associated with adult traits, including fasting glucose (MTNR1B, GCK and TCF7L2) and sex hormone levels (CYP3A7), and one (EBF1) with gestational duration. The identified associations indicate that genetic effects on maternal glucose, cytochrome P450 activity and gestational duration, and potentially on maternal blood pressure and immune function, are relevant for fetal growth. Further characterization of these associations in mechanistic and causal analyses will enhance understanding of the potentially modifiable maternal determinants of fetal growth, with the goal of reducing the morbidity and mortality associated with low and high birth weights.
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Affiliation(s)
- Robin N Beaumont
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, University of Exeter, Royal Devon and Exeter Hospital, Exeter EX2 5DW, UK
| | - Nicole M Warrington
- Translational Research Institute, University of Queensland Diamantina Institute, Brisbane, QLD, Australia
| | - Alana Cavadino
- Centre for Environmental and Preventive Medicine, Wolfson Institute of Preventive Medicine, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Jessica Tyrrell
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, University of Exeter, Royal Devon and Exeter Hospital, Exeter EX2 5DW, UK.,European Centre for Environment and Human Health, University of Exeter, The Knowledge Spa, Truro TR1 3HD, UK
| | - Michael Nodzenski
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Momoko Horikoshi
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, UK.,Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Frank Geller
- Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark
| | - Ronny Myhre
- Division of Epidemiology, Department of Genes and Environment, Norwegian Institute of Public Health, Oslo, Norway
| | - Rebecca C Richmond
- Medical Research Council Integrative Epidemiology Unit at the University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK.,Population Health Science, Bristol Medical School, University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK.,The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, 3000 CA Rotterdam, The Netherlands
| | - Lavinia Paternoster
- Medical Research Council Integrative Epidemiology Unit at the University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK
| | - Jonathan P Bradfield
- Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Eskil Kreiner-Møller
- Copenhagen Prospective Studies on Asthma in Childhood (COPSAC), Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark.,Danish Pediatric Asthma Center, Copenhagen University Hospital, Gentofte, Denmark
| | - Ville Huikari
- Institute of Health Sciences, University of Oulu, Oulu, Finland
| | - Sarah Metrustry
- Department of Twin Research, King's College London, St. Thomas' Hospital, London, UK
| | - Kathryn L Lunetta
- Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA.,Framingham Heart Study, Framingham, MA, USA
| | - Jodie N Painter
- QIMR Berghofer Medical Research Institute, Royal Brisbane Hospital, Herston, QLD 4029, Australia
| | - Jouke-Jan Hottenga
- EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands.,Department of Biological Psychology, Vrije Universiteit Amsterdam, 1081 BT Amsterdam, The Netherlands
| | - Catherine Allard
- Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC, Canada
| | - Sheila J Barton
- Medical Research Council Lifecourse Epidemiology Unit, University of Southampton, Southampton, UK
| | - Ana Espinosa
- Pompeu Fabra University (UPF), Barcelona, Spain.,IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain.,ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
| | - Julie A Marsh
- Division of Obstetrics and Gynaecology, The University of Western Australia, Perth, Australia
| | - Catherine Potter
- Institute of Genetic Medicine, Newcastle University, Central Parkway, Newcastle upon Tyne NE1 3BZ, UK
| | - Ge Zhang
- Human Genetics Division, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Center for Prevention of Preterm Birth, Perinatal Institute, Cincinnati Children's Hospital Medical Center, OH, USA.,March of Dimes Prematurity Research Center Ohio Collaborative, Cincinnati, OH, USA
| | - Wei Ang
- Division of Obstetrics and Gynaecology, The University of Western Australia, Perth, Australia
| | - Diane J Berry
- Population, Policy and Practice, UCL Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Luigi Bouchard
- Centre de Recherche du Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, QC, Canada.,ECOGENE-21 and Lipid Clinic, Chicoutimi Hospital, Saguenay, QC, Canada.,Department of Biochemistry, Université de Sherbrooke, Sherbrooke, QC, Canada
| | - Shikta Das
- Population, Policy and Practice, UCL Great Ormond Street Institute of Child Health, University College London, London, UK
| | | | - Hakon Hakonarson
- Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.,Division of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.,Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Jani Heikkinen
- FIMM Institute for Molecular Medicine Finland, Helsinki University, Helsinki FI-00014, Finland
| | - Øyvind Helgeland
- Department of Clinical Science, KG Jebsen Center for Diabetes Research, University of Bergen, Bergen, Norway.,Department of Genetics and Bioinformatics, Domain of Health Data and Digitalisation, Institute of Public Health, Oslo, Norway
| | - Berthold Hocher
- The First Affiliated Hospital of Jinan University, Guangzhou 510630, China.,Institute of Nutritional Science, University of Potsdam, Potsdam, Germany
| | - Albert Hofman
- Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, 3000 CA Rotterdam, The Netherlands
| | - Hazel M Inskip
- Medical Research Council Lifecourse Epidemiology Unit, University of Southampton, Southampton, UK.,NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Samuel E Jones
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, University of Exeter, Royal Devon and Exeter Hospital, Exeter EX2 5DW, UK
| | - Manolis Kogevinas
- Pompeu Fabra University (UPF), Barcelona, Spain.,IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain.,ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
| | - Penelope A Lind
- QIMR Berghofer Medical Research Institute, Royal Brisbane Hospital, Herston, QLD 4029, Australia
| | - Letizia Marullo
- Genetic Section, Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Sarah E Medland
- QIMR Berghofer Medical Research Institute, Royal Brisbane Hospital, Herston, QLD 4029, Australia
| | - Anna Murray
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, University of Exeter, Royal Devon and Exeter Hospital, Exeter EX2 5DW, UK
| | - Jeffrey C Murray
- Department of Pediatrics, University of Iowa, Iowa City, IA, USA
| | - Pål R Njølstad
- Department of Clinical Science, KG Jebsen Center for Diabetes Research, University of Bergen, Bergen, Norway.,Department of Pediatrics, Haukeland University Hospital, Bergen 5021, Norway
| | - Ellen A Nohr
- Research Unit of Obstetrics & Gynecology, Institute of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Christoph Reichetzeder
- Institute of Nutritional Science, University of Potsdam, Potsdam, Germany.,Center for Cardiovascular Research, Charité, Berlin, Germany
| | - Susan M Ring
- Medical Research Council Integrative Epidemiology Unit at the University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK.,Population Health Science, Bristol Medical School, University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK
| | - Katherine S Ruth
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, University of Exeter, Royal Devon and Exeter Hospital, Exeter EX2 5DW, UK
| | - Loreto Santa-Marina
- ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.,Subdirección de Salud Pública y Adicciones de Gipuzkoa, Donostia/San Sebastián, Spain.,Instituto de Investigación Sanitaria BIODONOSTIA, Donostia/San Sebastián, Spain
| | - Denise M Scholtens
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Sylvain Sebert
- Institute of Health Sciences, University of Oulu, Oulu, Finland.,Department of Epidemiology and Biostatistics, School of Public Health, Medical Research Council-Health Protection Agency Centre for Environment and Health, Faculty of Medicine, Imperial College London, London, UK
| | - Verena Sengpiel
- Department of Obstetrics and Gynecology, Sahlgrenska Academy, Sahgrenska University Hospital, Gothenburg, Sweden
| | - Marcus A Tuke
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, University of Exeter, Royal Devon and Exeter Hospital, Exeter EX2 5DW, UK
| | - Marc Vaudel
- Department of Clinical Science, KG Jebsen Center for Diabetes Research, University of Bergen, Bergen, Norway
| | - Michael N Weedon
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, University of Exeter, Royal Devon and Exeter Hospital, Exeter EX2 5DW, UK
| | - Gonneke Willemsen
- EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands.,Department of Biological Psychology, Vrije Universiteit Amsterdam, 1081 BT Amsterdam, The Netherlands
| | - Andrew R Wood
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, University of Exeter, Royal Devon and Exeter Hospital, Exeter EX2 5DW, UK
| | - Hanieh Yaghootkar
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, University of Exeter, Royal Devon and Exeter Hospital, Exeter EX2 5DW, UK
| | - Louis J Muglia
- Center for Prevention of Preterm Birth, Perinatal Institute, Cincinnati Children's Hospital Medical Center, OH, USA.,March of Dimes Prematurity Research Center Ohio Collaborative, Cincinnati, OH, USA
| | - Meike Bartels
- EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands.,Department of Biological Psychology, Vrije Universiteit Amsterdam, 1081 BT Amsterdam, The Netherlands
| | - Caroline L Relton
- Medical Research Council Integrative Epidemiology Unit at the University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK.,Population Health Science, Bristol Medical School, University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK.,Institute of Genetic Medicine, Newcastle University, Central Parkway, Newcastle upon Tyne NE1 3BZ, UK
| | - Craig E Pennell
- Division of Obstetrics and Gynaecology, The University of Western Australia, Perth, Australia
| | - Leda Chatzi
- Department of Social Medicine, University of Crete, Crete, Greece
| | - Xavier Estivill
- Pompeu Fabra University (UPF), Barcelona, Spain.,ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
| | - John W Holloway
- Human Development & Health, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Dorret I Boomsma
- EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands.,Department of Biological Psychology, Vrije Universiteit Amsterdam, 1081 BT Amsterdam, The Netherlands
| | - Grant W Montgomery
- QIMR Berghofer Medical Research Institute, Royal Brisbane Hospital, Herston, QLD 4029, Australia
| | - Joanne M Murabito
- Framingham Heart Study, Framingham, MA, USA.,Section of General Internal Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Tim D Spector
- Department of Twin Research, King's College London, St. Thomas' Hospital, London, UK
| | - Christine Power
- Population, Policy and Practice, UCL Great Ormond Street Institute of Child Health, University College London, London, UK
| | - Marjo-Ritta Järvelin
- Institute of Health Sciences, University of Oulu, Oulu, Finland.,Department of Epidemiology and Biostatistics, School of Public Health, Medical Research Council-Health Protection Agency Centre for Environment and Health, Faculty of Medicine, Imperial College London, London, UK.,Biocenter Oulu, University of Oulu, Oulu, Finland.,Unit of Primary Care, Oulu University Hospital, FI-90220 Oulu, 90029 OYS, Finland.,Department of Children and Young People and Families, National Institute for Health and Welfare, FI-90101 Oulu, Finland
| | - Hans Bisgaard
- Copenhagen Prospective Studies on Asthma in Childhood (COPSAC), Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark.,Danish Pediatric Asthma Center, Copenhagen University Hospital, Gentofte, Denmark
| | - Struan F A Grant
- Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.,Division of Human Genetics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.,Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Thorkild I A Sørensen
- Medical Research Council Integrative Epidemiology Unit at the University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK.,Department of Public Health, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.,Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Vincent W Jaddoe
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, 3000 CA Rotterdam, The Netherlands.,Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, 3000 CA Rotterdam, The Netherlands.,Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, 3000 CA Rotterdam, The Netherlands
| | - Bo Jacobsson
- Division of Epidemiology, Department of Genes and Environment, Norwegian Institute of Public Health, Oslo, Norway.,Department of Obstetrics and Gynecology, Sahlgrenska Academy, Sahgrenska University Hospital, Gothenburg, Sweden
| | - Mads Melbye
- Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark.,Department of Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Mark I McCarthy
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, UK.,Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK.,Oxford National Institute for Health Research (NIHR) Biomedical Research Centre, Churchill Hospital, Oxford, UK
| | - Andrew T Hattersley
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, University of Exeter, Royal Devon and Exeter Hospital, Exeter EX2 5DW, UK
| | - M Geoffrey Hayes
- Division of Endocrinology, Metabolism and Molecular Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Timothy M Frayling
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, University of Exeter, Royal Devon and Exeter Hospital, Exeter EX2 5DW, UK
| | - Marie-France Hivert
- Department of Population Medicine, Harvard Pilgrim Health Care Institute, Harvard Medical School, Boston, MA, USA.,Diabetes Center, Massachussetts General Hospital, Boston, MA, USA.,Department of Medicine, Universite de Sherbrooke, QC, Canada
| | - Janine F Felix
- The Generation R Study Group, Erasmus MC, University Medical Center Rotterdam, 3000 CA Rotterdam, The Netherlands.,Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, 3000 CA Rotterdam, The Netherlands.,Department of Pediatrics, Erasmus MC, University Medical Center Rotterdam, 3000 CA Rotterdam, The Netherlands
| | - Elina Hyppönen
- Population, Policy and Practice, UCL Great Ormond Street Institute of Child Health, University College London, London, UK.,Centre for School of Population Health Research, School of Health Sciences, and Sansom Institute, University of South Australia, Adelaide, Australia.,South Australian Health and Medical Research Institute, Adelaide, Australia
| | - William L Lowe
- Division of Endocrinology, Metabolism and Molecular Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - David M Evans
- Translational Research Institute, University of Queensland Diamantina Institute, Brisbane, QLD, Australia.,Medical Research Council Integrative Epidemiology Unit at the University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK.,Population Health Science, Bristol Medical School, University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK
| | - Debbie A Lawlor
- Medical Research Council Integrative Epidemiology Unit at the University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK.,Population Health Science, Bristol Medical School, University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK
| | - Bjarke Feenstra
- Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark
| | - Rachel M Freathy
- Institute of Biomedical and Clinical Science, University of Exeter Medical School, University of Exeter, Royal Devon and Exeter Hospital, Exeter EX2 5DW, UK.,Medical Research Council Integrative Epidemiology Unit at the University of Bristol, Oakfield House, Oakfield Grove, Bristol BS8 2BN, UK
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25
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Dekker SJ, Dohmen F, Vermeulen NPE, Commandeur JNM. Characterization of kinetics of human cytochrome P450s involved in bioactivation of flucloxacillin: inhibition of CYP3A-catalysed hydroxylation by sulfaphenazole. Br J Pharmacol 2018; 176:466-477. [PMID: 30447161 PMCID: PMC6329626 DOI: 10.1111/bph.14548] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 10/19/2018] [Accepted: 10/27/2018] [Indexed: 01/18/2023] Open
Abstract
Background and Purpose The aim of this study was to characterize the human cytochrome P450s (CYPs) involved in oxidative bioactivation of flucloxacillin to 5‐hydroxymethyl flucloxacillin, a metabolite with high cytotoxicity towards biliary epithelial cells. Experimental Approach The CYPs involved in hydroxylation of flucloxacillin were characterized using recombinant human CYPs, pooled liver microsomes in the presence of CYP‐specific inhibitors and by correlation analysis using a panel of liver microsomes from 16 donors. Key Results Recombinant CYPs showing the highest specific activity were CYP3A4, CYP3A7 and to lower extent CYP2C9 and CTP2C8. Michaelis–Menten enzyme kinetics were determined for pooled human liver microsomes, recombinant CYP3A4, CYP3A7 and CYP2C9. Surprisingly, sulfaphenazole appeared to be a potent inhibitor of 5′‐hydroxylation of flucloxacillin by both recombinant CYP3A4 and CYP3A7. Conclusions and Implications The combined results show that the 5′‐hydroxylation of flucloxacillin is primarily catalysed by CYP3A4, CYP3A7 and CYP2C9. The large variability of the hepatic expression of these enzymes could affect the formation of 5′‐hydroxymethyl flucloxacillin, which may determine the differences in susceptibility to flucloxacillin‐induced liver injury. Additionally, the strong inhibition in CYP3A‐catalysed flucloxacillin metabolism by sulfaphenazole suggests that unanticipated drug–drug interactions could occur with coadministered drugs.
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Affiliation(s)
- Stefan J Dekker
- Division of Molecular Toxicology, Amsterdam Institute for Molecules Medicine and Systems (AIMMS), Vrije Universiteit, Amsterdam, The Netherlands
| | - Floor Dohmen
- Division of Molecular Toxicology, Amsterdam Institute for Molecules Medicine and Systems (AIMMS), Vrije Universiteit, Amsterdam, The Netherlands
| | - Nico P E Vermeulen
- Division of Molecular Toxicology, Amsterdam Institute for Molecules Medicine and Systems (AIMMS), Vrije Universiteit, Amsterdam, The Netherlands
| | - Jan N M Commandeur
- Division of Molecular Toxicology, Amsterdam Institute for Molecules Medicine and Systems (AIMMS), Vrije Universiteit, Amsterdam, The Netherlands
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26
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Pasternak AL, Zhang L, Hertz DL. CYP3A pharmacogenetic association with tacrolimus pharmacokinetics differs based on route of drug administration. Pharmacogenomics 2018; 19:563-576. [DOI: 10.2217/pgs-2018-0003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Tacrolimus is prescribed to the majority of transplant recipients to prevent graft rejection, and although patients are maintained on oral administration, nonoral routes of administration are frequently used in the initial post-transplant period. CYP3A5 genotype is an established predictor of oral tacrolimus dose requirements, and clinical guideline recommendations exist for CYP3A5-guided dose selection. However, the association between CYP3A5 and nonoral tacrolimus administration is currently poorly understood, and differs from the oral tacrolimus relationship. In addition to CYP3A5, other pharmacogenes associated with CYP3A activity, including CYP3A4, CYP3A7 and POR have also been identified as predictors of tacrolimus exposure. This review will describe the current understanding of the relationship between these pharmacogenes and tacrolimus pharmacokinetics after oral and nonoral administration.
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Affiliation(s)
- Amy L Pasternak
- Department of Clinical Pharmacy, College of Pharmacy, University of Michigan, 428 Church St., Ann Arbor, MI 48109, USA
| | - Lu Zhang
- Department of Clinical Pharmacy, College of Pharmacy, University of Michigan, 428 Church St., Ann Arbor, MI 48109, USA
| | - Daniel L Hertz
- Department of Clinical Pharmacy, College of Pharmacy, University of Michigan, 428 Church St., Ann Arbor, MI 48109, USA
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27
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Van Donge T, Mian P, Tibboel D, Van Den Anker J, Allegaert K. Drug metabolism in early infancy: opioids as an illustration. Expert Opin Drug Metab Toxicol 2018; 14:287-301. [PMID: 29363349 DOI: 10.1080/17425255.2018.1432595] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
INTRODUCTION Drug dosing in infants frequently depends on body weight as a crude indicator for maturation. Fentanyl (metabolized by Cytochrome P450 3A4) and morphine (glucuronidated by UDP-glucuronosyltransferase-2B7) served as model drugs to provide insight in maturation patterns of these enzymes and provide understanding of the impact of non-maturational factors to optimize dosing in infants. Areas covered: Systematic searches on metabolism and population pharmacokinetic (Pop-PK) models for fentanyl and morphine were performed. Pre- and post-model selection criteria were applied to assess and evaluate the validity of these models. It was observed that maturational changes have been rather well investigated, be it with variability in the maturational function estimates. The same holds true for Pop-PK models, where non-maturational covariates have also been reported (pharmacogenetics, disease state or external influences), although less incorporated in the PK models and with limited knowledge on mechanisms involved. Expert opinion: PK models for fentanyl and morphine are currently available. Consequently, we suggest that researchers should not continue to develop new models, but should investigate whether collected data fit in already existing models and provide additional value concerning the impact of (non)-maturational factors like drug-drug interactions or pharmacogenetics.
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Affiliation(s)
- Tamara Van Donge
- a Intensive Care and Department of Paediatric Surgery , Erasmus MC-Sophia Children's Hospital , Rotterdam , The Netherlands.,b Systems Biomedicine and Pharmacology , LACDR, Leiden University , Leiden , The Netherlands
| | - Paola Mian
- a Intensive Care and Department of Paediatric Surgery , Erasmus MC-Sophia Children's Hospital , Rotterdam , The Netherlands
| | - Dick Tibboel
- a Intensive Care and Department of Paediatric Surgery , Erasmus MC-Sophia Children's Hospital , Rotterdam , The Netherlands
| | - John Van Den Anker
- a Intensive Care and Department of Paediatric Surgery , Erasmus MC-Sophia Children's Hospital , Rotterdam , The Netherlands.,c Paediatric Pharmacology and Pharmacometrics , University of Basel Children's Hospital , Basel , Switzerland.,d Division of Clinical Pharmacology , Children's National Health System , Washington , DC , USA
| | - Karel Allegaert
- a Intensive Care and Department of Paediatric Surgery , Erasmus MC-Sophia Children's Hospital , Rotterdam , The Netherlands.,e Department of Development and Regeneration , KU Leuven , Leuven , Belgium
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28
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Identification of approved drugs as potent inhibitors of pregnane X receptor activation with differential receptor interaction profiles. Arch Toxicol 2018; 92:1435-1451. [DOI: 10.1007/s00204-018-2165-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Accepted: 01/17/2018] [Indexed: 01/18/2023]
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29
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Sun B, Guo Y, Gao J, Shi W, Fan G, Li X, Qiu J, Qin Y, Liu G. Influence of CYP3A and ABCB1 polymorphisms on cyclosporine concentrations in renal transplant recipients. Pharmacogenomics 2017; 18:1503-1513. [PMID: 28952408 DOI: 10.2217/pgs-2017-0127] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Aim: Cyclosporine is a substrate of CYP3A and ABCB1. This study examined the role of CYP3A and ABCB1 polymorphisms on cyclosporine pharmacokinetics in renal transplant recipients. Patients & methods: CYP3A and ABCB1 SNPs were detected in 521 recipients. The relationships of dose-adjusted concentrations with corresponding genotypes were investigated at the different terms. Results: CYP3A5 rs776746 and CYP3A7 rs10211 genotype affect C0/D at the short-term, medium-term and long-term after transplantation (p < 0.05). CYP3A7 rs2257401 genotype affects C2/D at the medium-term (p < 0.05). CYP3A4 rs4646437, CYP3A5 rs776746 and CYP3A7 rs2257401 genotype affect C2/D at the long-term (p < 0.05). There are no relationships between ABCB1 polymorphism and cyclosporine C/D. Conclusion: CYP3A genetic factors (rs776746, rs4646437, rs2257401 and rs10211) were varied in different stages after transplantation. The role of CYP3A7 in cyclosporine metabolism requires further study.
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Affiliation(s)
- Bo Sun
- Department of Pharmacy, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R. China
| | - Yankun Guo
- Department of Pharmacy, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R. China
| | - Junwei Gao
- Department of Pharmacy, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R. China
| | - Weifeng Shi
- Department of Pharmacy, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R. China
| | - Guorong Fan
- Department of Pharmacy, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R. China
| | - Xiaoyu Li
- Department of Pharmacy, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R. China
| | - Jianxin Qiu
- Department of Renal Transplantation & Urology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R. China
| | - Yan Qin
- Department of Renal Transplantation & Urology, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R. China
| | - Gaolin Liu
- Department of Pharmacy, Shanghai General Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R. China
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Contrasting exome constancy and regulatory region variation in the gene encoding CYP3A4: an examination of the extent and potential implications. Pharmacogenet Genomics 2017; 26:255-70. [PMID: 27139836 DOI: 10.1097/fpc.0000000000000207] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE CYP3A4 expression varies up to 100-fold among individuals, and, to date, genetic causes remain elusive. As a major drug-metabolizing enzyme, elucidation of such genetic causes would increase the potential for introducing personalized dose adjustment of therapies involving CYP3A4 drug substrates. The foetal CYP3A isoform, CYP3A7, is reported to be expressed in ∼10% of European adults and may thus contribute towards the metabolism of endogenous substances and CYP3A drug substrates. However, little is known about the distribution of the variant expressed in the adult. METHODS We resequenced the exons, flanking introns, regulatory elements and 3'UTR of CYP3A4 in five Ethiopian populations and incorporated data from the 1000 Genomes Project. Using bioinformatic analysis, we assessed likely consequences of observed CYP3A4 genomic variation. We also conducted the first extensive geographic survey of alleles associated with adult expression of CYP3A7 - that is, CYP3A7*1B and CYP3A7*1C. RESULTS AND CONCLUSION Ethiopia contained 60 CYP3A4 variants (26 novel) and more variants (>1%) than all non-African populations combined. No nonsynonymous mutation was found in the homozygous form or at more than 2.8% in any population. Seventy-nine per cent of haplotypes contained 3'UTR and/or regulatory region variation with striking pairwise population differentiation, highlighting the potential for interethnic variation in CYP3A4 expression. Conversely, coding region variation showed that significant interethnic variation is unlikely at the protein level. CYP3A7*1C was found at up to 17.5% in North African populations and in significant linkage disequilibrium with CYP3A5*3, indicating that adult expression of the foetal isoform is likely to be accompanied by reduced or null expression of CYP3A5.
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Jeske J, Windshügel B, Thasler WE, Schwab M, Burk O. Human pregnane X receptor is activated by dibenzazepine carbamate-based inhibitors of constitutive androstane receptor. Arch Toxicol 2017; 91:2375-2390. [DOI: 10.1007/s00204-017-1948-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 02/23/2017] [Indexed: 10/20/2022]
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Sood D, Johnson N, Jain P, Siskos AP, Bennett M, Gilham C, Busana MC, Peto J, Dos-Santos-Silva I, Keun HC, Fletcher O. CYP3A7*1C allele is associated with reduced levels of 2-hydroxylation pathway oestrogen metabolites. Br J Cancer 2017; 116:382-388. [PMID: 28072767 PMCID: PMC5294487 DOI: 10.1038/bjc.2016.432] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 11/24/2016] [Accepted: 12/01/2016] [Indexed: 11/29/2022] Open
Abstract
Background: Endogenous sex hormones are well-established risk factors for breast cancer; the contribution of specific oestrogen metabolites (EMs) and/or ratios of specific EMs is less clear. We have previously identified a CYP3A7*1C allele that is associated with lower urinary oestrone (E1) levels in premenopausal women. The purpose of this analysis was to determine whether this allele was associated with specific pathway EMs. Methods: We measured successfully 12 EMs in mid-follicular phase urine samples from 30 CYP3A7*1C carriers and 30 non-carriers using HPLC-MS/MS. Results: In addition to having lower urinary E1 levels, CYP3A7*1C carriers had significantly lower levels of four of the 2-hydroxylation pathway EMs that we measured (2-hydroxyestrone, P=1.1 × 10−12; 2-hydroxyestradiol, P=2.7 × 10−7; 2-methoxyestrone, P=1.9 × 10−12; and 2-methoxyestradiol, P=0.0009). By contrast, 16α-hydroxylation pathway EMs were slightly higher in carriers and significantly so for 17-epiestriol (P=0.002). Conclusions: The CYP3A7*1C allele is associated with a lower urinary E1 levels, a more pronounced reduction in 2-hydroxylation pathway EMs and a lower ratio of 2-hydroxylation:16α-hydroxylation EMs in premenopausal women. To further characterise the association between parent oestrogens, EMs and subsequent risk of breast cancer, characterisation of additional genetic variants that influence oestrogen metabolism and large prospective studies of a broad spectrum of EMs will be required.
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Affiliation(s)
- Deepti Sood
- Faculty of Medicine, Department of Surgery and Cancer, Imperial College, London SW7 2AZ, UK
| | - Nichola Johnson
- Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, 237 Fulham Road, London SW7 3RP, UK
| | - Pooja Jain
- Faculty of Medicine, Department of Surgery and Cancer, Imperial College, London SW7 2AZ, UK
| | - Alexandros P Siskos
- Faculty of Medicine, Department of Surgery and Cancer, Imperial College, London SW7 2AZ, UK
| | - Mark Bennett
- Department of Life Sciences, Imperial College, London SW7 2AZ, UK
| | - Clare Gilham
- Department of Non-Communicable Disease Epidemiology, The London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK
| | - Marta Cecilia Busana
- Department of Non-Communicable Disease Epidemiology, The London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK
| | - Julian Peto
- Department of Non-Communicable Disease Epidemiology, The London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK
| | - Isabel Dos-Santos-Silva
- Department of Non-Communicable Disease Epidemiology, The London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK
| | - Hector C Keun
- Faculty of Medicine, Department of Surgery and Cancer, Imperial College, London SW7 2AZ, UK
| | - Olivia Fletcher
- Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, 237 Fulham Road, London SW7 3RP, UK
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Lolodi O, Wang YM, Wright WC, Chen T. Differential Regulation of CYP3A4 and CYP3A5 and its Implication in Drug Discovery. Curr Drug Metab 2017; 18:1095-1105. [PMID: 28558634 PMCID: PMC5709240 DOI: 10.2174/1389200218666170531112038] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/29/2017] [Accepted: 05/08/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND Cancer cells use several mechanisms to resist the cytotoxic effects of drugs, resulting in tumor progression and invasion. One such mechanism capitalizes on the body's natural defense against xenobiotics by increasing the rate of xenobiotic efflux and metabolic inactivation. Xenobiotic metabolism typically involves conversion of parent molecules to more soluble and easily excreted derivatives in reactions catalyzed by Phase I and Phase II drug metabolizing enzymes. METHODS We performed a structured search of peer-reviewed literature on P450 (CYP) 3A, with a focus on CYP3A4 and CYP3A5. RESULTS Recent reports indicate that components of the xenobiotic response system are upregulated in some diseases, including many cancers. Such components include the pregnane X receptor (PXR), CYP3A4 and CYP3A5 enzymes. The CYP3A enzymes are a subset of the numerous enzymes that are transcriptionally activated following the interaction of PXR and many ligands. CONCLUSION Intense research is ongoing to understand the functional ramifications of aberrant expression of these components in diseased states with the goal of designing novel drugs that can selectively target them.
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Affiliation(s)
- Ogheneochukome Lolodi
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA
| | - Yue-Ming Wang
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA
| | - William C. Wright
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA
- Integrated Biomedical Sciences Program, University of Tennessee Health Science Center, Memphis, Tennessee, USA
| | - Taosheng Chen
- Department of Chemical Biology and Therapeutics, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA
- Integrated Biomedical Sciences Program, University of Tennessee Health Science Center, Memphis, Tennessee, USA
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Knops N, Herman J, van Dyck M, Ramazani Y, Debbaut E, van Damme-Lombaerts R, Levtchenko E, van den Heuvel LP, Fieuws S, Kuypers D. Tacrolimus dose requirements in paediatric renal allograft recipients are characterized by a biphasic course determined by age and bone maturation. Br J Clin Pharmacol 2016; 83:863-874. [PMID: 27966227 DOI: 10.1111/bcp.13174] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 10/10/2016] [Accepted: 10/25/2016] [Indexed: 12/14/2022] Open
Abstract
AIMS Despite longstanding recognition of significant age-dependent differences in drug disposition during childhood, the exact course and the underlying mechanisms are not known. Our aim was to determine the course and determinants of individual relative dose requirements, during long-term follow-up in children on tacrolimus. METHODS This was a cohort study in a tertiary hospital with standardized annual pharmacokinetic (PK) follow-up (AUC0-12hr ) in recipients of a renal allograft (≤19 years), between 1998 and 2015. In addition, the presence of relevant pharmacogenetic variants was determined. The evolution of dose-corrected exposure was evaluated using mixed models. RESULTS A total of 184 PK visits by 43 children were included in the study (median age: 14.6). AUC0-12h corrected for dose per kg demonstrated a biphasic course: annual increase 4.4% (CI: 0.3-8.7%) until ±14 years of age, followed by 13.4% increase (CI 8.7-18.3%). Moreover, exposure corrected for dose per m2 proved stable until 14 years (+0.8% annually; CI: -3.0 to +4.8%), followed by a steep increase ≥14 years (+11%; CI: 7.0-16.0%). Analysis according to bone maturation instead of age demonstrated a similar course with a distinct divergence at TW2: 800 (P = 0.01). Genetic variation in CYP3A4, CYP3A5, and CYP3A7 was associated with altered dose requirements, independent of age. CONCLUSIONS Children exhibit a biphasic course in tacrolimus disposition characterized by a high and stable drug clearance until a specific phase in pubertal development (TW2: 800 at age: ±14 years), followed by an important decline in relative dose requirements thereafter. Pharmacogenetic variation demonstrated an age/puberty independent effect. We suggest a critical reappraisal of current paediatric dosing algorithms for tacrolimus and drugs with a similar disposition.
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Affiliation(s)
- Noël Knops
- Dept. of Pediatric Nephrology and Solid Organ Transplantation, University Hospitals Leuven, Herestraat 49, Leuven, Belgium.,Laboratory for Pediatrics, Dept. of Development & Regeneration, KU Leuven, O&N3, bus 817, Leuven, Belgium
| | - Jean Herman
- Dept. of Pediatric Nephrology and Solid Organ Transplantation, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
| | - Maria van Dyck
- Dept. of Pediatric Nephrology and Solid Organ Transplantation, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
| | - Yasaman Ramazani
- Laboratory for Pediatrics, Dept. of Development & Regeneration, KU Leuven, O&N3, bus 817, Leuven, Belgium
| | - Edward Debbaut
- Dept. of Pediatric Nephrology and Solid Organ Transplantation, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
| | - Rita van Damme-Lombaerts
- Dept. of Pediatric Nephrology and Solid Organ Transplantation, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
| | - Elena Levtchenko
- Dept. of Pediatric Nephrology and Solid Organ Transplantation, University Hospitals Leuven, Herestraat 49, Leuven, Belgium.,Laboratory for Pediatrics, Dept. of Development & Regeneration, KU Leuven, O&N3, bus 817, Leuven, Belgium
| | - Lambertus P van den Heuvel
- Laboratory for Pediatrics, Dept. of Development & Regeneration, KU Leuven, O&N3, bus 817, Leuven, Belgium
| | - Steffen Fieuws
- Interuniversity Institute for Biostatistics and statistical Bioinformatics, University of Leuven, Belgium, Kapucijnenvoer 35, Leuven, Belgium
| | - Dirk Kuypers
- Dept. of Nephrology and Renal Transplantation, University Hospitals Leuven, Herestraat 49, Leuven, Belgium
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Developmental regulation of CYP3A4 and CYP3A7 in Chinese Han population. Drug Metab Pharmacokinet 2016; 31:433-444. [PMID: 27727071 DOI: 10.1016/j.dmpk.2016.08.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 07/12/2016] [Accepted: 08/30/2016] [Indexed: 01/06/2023]
Abstract
CYP3A4 and CYP3A7 are generally served as the major adult and fetal liver forms, respectively, and exhibited a developmental switch during liver maturation. The objective of this study was to explore the potential mechanisms associated with the developmental switch of CYP3A4 and CYP3A7 in the Chinese Han population. We analyzed CYP3A4/7, nuclear receptors, and epigenetic modifications in human liver samples. We found that the expression levels of CYP3A4 mRNA in adults were significantly higher than the levels in fetus. In contrast, CYP3A7 mRNA expression reached a maximal level at an estimated gestational age of 25 weeks and then substantially decreased during the first year after birth. We also found that the expression level of hepatocyte nuclear factor 4 alpha (HNF4A) was most associated with CYP3A4 expression in adult liver; whereas the expression level of glucocorticoid receptor (GR) was intensively correlated with CYP3A7 expression in fetal liver. Furthermore, we illustrated the dynamic changes of H3K4me2 and H3K27me3 in the developmental switch of CYP3A7 and CYP3A4. In summary, our data suggested that HNF4A and GR, and epigenetic changes of H3K4me2 and H3K27me3 are associated with the ontogenic expressions of CYP3A4/3A7 in the livers of the Chinese Han population.
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Daud ANA, Bergman JEH, Kerstjens-Frederikse WS, Groen H, Wilffert B. The Risk of Congenital Heart Anomalies Following Prenatal Exposure to Serotonin Reuptake Inhibitors-Is Pharmacogenetics the Key? Int J Mol Sci 2016; 17:ijms17081333. [PMID: 27529241 PMCID: PMC5000730 DOI: 10.3390/ijms17081333] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 07/27/2016] [Accepted: 07/27/2016] [Indexed: 12/12/2022] Open
Abstract
Serotonin reuptake inhibitors (SRIs) are often prescribed during pregnancy. Previous studies that found an increased risk of congenital anomalies, particularly congenital heart anomalies (CHA), with SRI use during pregnancy have created concern among pregnant women and healthcare professionals about the safety of these drugs. However, subsequent studies have reported conflicting results on the association between CHA and SRI use during pregnancy. These discrepancies in the risk estimates can potentially be explained by genetic differences among exposed individuals. In this review, we explore the potential pharmacogenetic predictors involved in the pharmacokinetics and mechanism of action of SRIs, and their relation to the risk of CHA. In general, the risk is dependent on the maternal concentration of SRIs and the foetal serotonin level/effect, which can be modulated by the alteration in the expression and/or function of the metabolic enzymes, transporter proteins and serotonin receptors involved in the serotonin signalling of the foetal heart development. Pharmacogenetics might be the key to understanding why some children exposed to SRIs develop a congenital heart anomaly and others do not.
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Affiliation(s)
- Aizati N A Daud
- Department of Pharmacy, Unit of PharmacoTherapy, -Epidemiology and -Economics, University of Groningen, 9713AV Groningen, The Netherlands.
- School of Pharmaceutical Sciences, Discipline of Clinical Pharmacy, Universiti Sains Malaysia, 11800 Penang, Malaysia.
| | - Jorieke E H Bergman
- Department of Genetics, University Medical Center Groningen, University of Groningen, 9713AV Groningen, The Netherlands.
| | | | - Henk Groen
- Department of Epidemiology, University Medical Centre Groningen, University of Groningen, 9713AV Groningen, The Netherlands.
| | - Bob Wilffert
- Department of Pharmacy, Unit of PharmacoTherapy, -Epidemiology and -Economics, University of Groningen, 9713AV Groningen, The Netherlands.
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, University of Groningen, 9713AV Groningen, The Netherlands.
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Amal Al Omari, Murry DJ. Pharmacogenetics of the Cytochrome P450 Enzyme System: Review of Current Knowledge and Clinical Significance. J Pharm Pract 2016. [DOI: 10.1177/0897190007304821] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Genetic variation in drug metabolizing enzymes is an important contributor to interindividual variation in drug disposition and response and is associated with significant clinical consequences. Many commonly used drugs are dependent on the cytochrome P450 monooxygenase enzymes (CYP450) for their metabolism and elimination. At present, more than 57 active human CYP450 genes are known, and the majority of these genes are polymorphic. Despite the large number of CYP450 genes, only the CYP1, CYP2, and CYP3 families of enzymes have a major role in drug metabolism. Approximately 10 CYP450s are responsible for the metabolism of a large number of pharmacologic agents in human beings. The polymorphic forms of the CYP450s are responsible for the development of a significant number of adverse drug reactions and may also contribute to drug response. Genetic polymorphisms have now been identified in the genes encoding all the main CYP450s that contribute to drug and other xenobiotic metabolism, and there are marked interethnic differences in the distribution and frequency of variant alleles. A review of the progress in the pharmacogenetics of P450s that are important for drug metabolism is presented with particular emphasis on the clinical relevance of this research.
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Affiliation(s)
- Amal Al Omari
- Department of Clinical and Administrative Pharmacy at the University of Iowa
| | - Daryl J. Murry
- Department of Clinical and Administrative Pharmacy, College of Pharmacy, S418 Phar, University of Iowa, 115 S. Grand Ave, Iowa City, IA 52242,
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Fanni D, Manchia M, Lai F, Gerosa C, Ambu R, Faa G. Immunohistochemical markers of CYP3A4 and CYP3A7: a new tool towards personalized pharmacotherapy of hepatocellular carcinoma. Eur J Histochem 2016; 60:2614. [PMID: 27349315 PMCID: PMC4933826 DOI: 10.4081/ejh.2016.2614] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 02/26/2016] [Accepted: 02/26/2016] [Indexed: 12/21/2022] Open
Abstract
Hepatocellular carcinoma (HCC) represents a major global health problem, since more than 90% of primary liver cancers worldwide are HCC. Most cases of HCC are secondary to viral hepatitis infection (hepatitis B or C), alcoholism and cirrhosis. Sorafenib, an oral tyrosine kinase inhibitor that suppresses tumor proliferation and angiogenesis, emerged as the first effective systemic treatment for HCC after 30 years of research, and is currently the standard-of-care for patients with advanced HCC. Sorafenib is metabolized by cytochrome P450 (CYP450), particularly from the 3A4 isoform, producing two main metabolites: the N-oxide and the N-hydroxymethyl metabolite. We studied 11 HCC sample showing the presence of CYP3A4 and CYP3A7 in most of the samples analysed. Specifically, the immunoreactivity of CYP3A4 was stronger and more widespread than that of CYP3A7. The CYP3A4 immunoreactivity was observed in surrounding hepatocytes in 8 out of 11 cases; while the CYP3A7 immunostaining was found in normal liver cells, in 7 out of 11 cases. These results suggest the existence of a marked inter-individual variability regarding the presence of the isoforms of CYP3A. In addition, since sorafenib is metabolized by CYP3A4, but not by CYP3A7, an overexpression of CYP3A4 may lead to an increase in the degradation of the drug and then to clinical ineffectiveness. These results might implicate the necessity of an individualized approach in the treatment of HCC as positivity to CYP3A4 in HCC liver samples might predict a scarce response to sorafenib.
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Genomewide comparison of the inducible transcriptomes of nuclear receptors CAR, PXR and PPARα in primary human hepatocytes. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2016; 1859:1218-1227. [PMID: 26994748 DOI: 10.1016/j.bbagrm.2016.03.007] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 03/13/2016] [Accepted: 03/14/2016] [Indexed: 01/09/2023]
Abstract
The ligand-activated nuclear receptor pregnane X receptor (PXR, NR1I2) and the constitutive androstane receptor (CAR, NR1I3) are two master transcriptional regulators of many important drug metabolizing enzymes and transporter genes (DMET) in response to xenobiotics including many drugs. The peroxisome proliferator-activated receptor alpha (PPARα, NR1C1), the target of lipid lowering fibrate drugs, primarily regulates fatty acid catabolism and energy-homeostasis. Recent research has shown that there are substantial overlaps in the regulated genes of these receptors. For example, both CAR and PXR also modulate the transcription of key enzymes involved in lipid and glucose metabolism and PPARα also functions as a direct transcriptional regulator of important DMET genes including cytochrome P450s CYP3A4 and CYP2C8. Despite their important and widespread influence on liver metabolism, comparative data are scarce, particularly at a global level and in humans. The major objective of this study was to directly compare the genome-wide transcriptional changes elucidated by the activation of these three nuclear receptors in primary human hepatocytes. Cultures from six individual donors were treated with the prototypical ligands for CAR (CITCO), PXR (rifampicin) and PPARα (WY14,643) or DMSO as vehicle control. Genomewide mRNA profiles determined with Affymetrix microarrays were analyzed for differentially expressed genes and metabolic functions. The results confirmed known prototype target genes and revealed strongly overlapping sets of coregulated but also distinctly regulated and novel responsive genes and pathways. The results further specify the role of PPARα as a regulator of drug metabolism and the role of the xenosensors PXR and CAR in lipid metabolism and energy homeostasis. This article is part of a Special Issue entitled: Xenobiotic nuclear receptors: New Tricks for An Old Dog, edited by Dr. Wen Xie.
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Johnson N, De Ieso P, Migliorini G, Orr N, Broderick P, Catovsky D, Matakidou A, Eisen T, Goldsmith C, Dudbridge F, Peto J, dos-Santos-Silva I, Ashworth A, Ross G, Houlston RS, Fletcher O. Cytochrome P450 Allele CYP3A7*1C Associates with Adverse Outcomes in Chronic Lymphocytic Leukemia, Breast, and Lung Cancer. Cancer Res 2016; 76:1485-1493. [PMID: 26964624 PMCID: PMC4795533 DOI: 10.1158/0008-5472.can-15-1410] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
CYP3A enzymes metabolize endogenous hormones and chemotherapeutic agents used to treat cancer, thereby potentially affecting drug effectiveness. Here, we refined the genetic basis underlying the functional effects of a CYP3A haplotype on urinary estrone glucuronide (E1G) levels and tested for an association between CYP3A genotype and outcome in patients with chronic lymphocytic leukemia (CLL), breast, or lung cancers. The most significantly associated SNP was rs45446698, an SNP that tags the CYP3A7*1C allele; this SNP was associated with a 54% decrease in urinary E1G levels. Genotyping this SNP in 1,008 breast cancer, 1,128 lung cancer, and 347 CLL patients, we found that rs45446698 was associated with breast cancer mortality (HR, 1.74; P = 0.03), all-cause mortality in lung cancer patients (HR, 1.43; P = 0.009), and CLL progression (HR, 1.62; P = 0.03). We also found borderline evidence of a statistical interaction between the CYP3A7*1C allele, treatment of patients with a cytotoxic agent that is a CYP3A substrate, and clinical outcome (Pinteraction = 0.06). The CYP3A7*1C allele, which results in adult expression of the fetal CYP3A7 gene, is likely to be the functional allele influencing levels of circulating endogenous sex hormones and outcome in these various malignancies. Further studies confirming these associations and determining the mechanism by which CYP3A7*1C influences outcome are required. One possibility is that standard chemotherapy regimens that include CYP3A substrates may not be optimal for the approximately 8% of cancer patients who are CYP3A7*1C carriers.
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Affiliation(s)
- Nichola Johnson
- Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK and Division of Breast Cancer Research, The Institute of Cancer Research, London, UK
| | | | - Gabriele Migliorini
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Nick Orr
- Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK and Division of Breast Cancer Research, The Institute of Cancer Research, London, UK
| | - Peter Broderick
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Daniel Catovsky
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
| | - Athena Matakidou
- Cancer Research UK Cambridge Institute, Li Ka Shing Centre, Cambridge, UK
| | - Timothy Eisen
- Department of Oncology, Cambridge University Hospitals National Health Service Foundation Trust, Cambridge, UK
- Addenbrooke’s Hospital, Cambridge Biomedical Campus, Cambridge, UK
| | - Christy Goldsmith
- Imperial College, London, UK and The Harley Street Clinic, London, UK
| | - Frank Dudbridge
- Non-communicable Disease Epidemiology Department, London School of Hygiene and Tropical Medicine, London, UK
| | - Julian Peto
- Non-communicable Disease Epidemiology Department, London School of Hygiene and Tropical Medicine, London, UK
| | - Isabel dos-Santos-Silva
- Non-communicable Disease Epidemiology Department, London School of Hygiene and Tropical Medicine, London, UK
| | - Alan Ashworth
- Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK and Division of Breast Cancer Research, The Institute of Cancer Research, London, UK
| | - Gillian Ross
- The Royal Marsden NHS Foundation Trust, Fulham Road, London UK
| | - Richard S Houlston
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Olivia Fletcher
- Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, London, UK and Division of Breast Cancer Research, The Institute of Cancer Research, London, UK
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Giebel NL, Shadley JD, McCarver DG, Dorko K, Gramignoli R, Strom SC, Yan K, Simpson PM, Hines RN. Role of Chromatin Structural Changes in Regulating Human CYP3A Ontogeny. ACTA ACUST UNITED AC 2016; 44:1027-37. [PMID: 26921389 DOI: 10.1124/dmd.116.069344] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Accepted: 02/25/2016] [Indexed: 11/22/2022]
Abstract
Variability in drug-metabolizing enzyme developmental trajectories contributes to interindividual differences in susceptibility to chemical toxicity and adverse drug reactions, particularly in the first years of life. Factors linked to these interindividual differences are largely unknown, but molecular mechanisms regulating ontogeny are likely involved. To evaluate chromatin structure dynamics as a likely contributing mechanism, age-dependent changes in modified and variant histone occupancy were evaluated within known CYP3A4 and 3A7 regulatory domains. Chromatin immunoprecipitation using fetal or postnatal human hepatocyte chromatin pools followed by quantitative polymerase chain reaction DNA amplification was used to determine relative chromatin occupancy by modified and variant histones. Chromatin structure representing a poised transcriptional state (bivalent chromatin), indicated by the occupancy by modified histones associated with both active and repressed transcription, was observed for CYP3A4 and most 3A7 regulatory regions in both postnatal and fetal livers. However, the CYP3A4 regulatory regions had significantly greater occupancy by modified histones associated with repressed transcription in the fetal liver. Conversely, some modified histones associated with active transcription exhibited greater occupancy in the postnatal liver. CYP3A7 regulatory regions also had significantly greater occupancy by modified histones associated with repressed transcription in the fetus. The observed occupancy by modified histones is consistent with chromatin structural dynamics contributing to CYP3A4 ontogeny, although the data are less conclusive regarding CYP3A7. Interpretation of the latter data may be confounded by cell-type heterogeneity in the fetal liver.
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Affiliation(s)
- Nicholas L Giebel
- Departments of Pediatrics and Pharmacology and Toxicology, Medical College of Wisconsin, and Children's Research Institute, Children's Hospital and Health Systems, Milwaukee, Wisconsin (N.L.G., J.D.S., D.G.M., K.Y., P.M.S., R.N.H.); and Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania (K.D., R.G., S.C.S.)
| | - Jeffrey D Shadley
- Departments of Pediatrics and Pharmacology and Toxicology, Medical College of Wisconsin, and Children's Research Institute, Children's Hospital and Health Systems, Milwaukee, Wisconsin (N.L.G., J.D.S., D.G.M., K.Y., P.M.S., R.N.H.); and Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania (K.D., R.G., S.C.S.)
| | - D Gail McCarver
- Departments of Pediatrics and Pharmacology and Toxicology, Medical College of Wisconsin, and Children's Research Institute, Children's Hospital and Health Systems, Milwaukee, Wisconsin (N.L.G., J.D.S., D.G.M., K.Y., P.M.S., R.N.H.); and Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania (K.D., R.G., S.C.S.)
| | - Kenneth Dorko
- Departments of Pediatrics and Pharmacology and Toxicology, Medical College of Wisconsin, and Children's Research Institute, Children's Hospital and Health Systems, Milwaukee, Wisconsin (N.L.G., J.D.S., D.G.M., K.Y., P.M.S., R.N.H.); and Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania (K.D., R.G., S.C.S.)
| | - Roberto Gramignoli
- Departments of Pediatrics and Pharmacology and Toxicology, Medical College of Wisconsin, and Children's Research Institute, Children's Hospital and Health Systems, Milwaukee, Wisconsin (N.L.G., J.D.S., D.G.M., K.Y., P.M.S., R.N.H.); and Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania (K.D., R.G., S.C.S.)
| | - Stephen C Strom
- Departments of Pediatrics and Pharmacology and Toxicology, Medical College of Wisconsin, and Children's Research Institute, Children's Hospital and Health Systems, Milwaukee, Wisconsin (N.L.G., J.D.S., D.G.M., K.Y., P.M.S., R.N.H.); and Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania (K.D., R.G., S.C.S.)
| | - Ke Yan
- Departments of Pediatrics and Pharmacology and Toxicology, Medical College of Wisconsin, and Children's Research Institute, Children's Hospital and Health Systems, Milwaukee, Wisconsin (N.L.G., J.D.S., D.G.M., K.Y., P.M.S., R.N.H.); and Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania (K.D., R.G., S.C.S.)
| | - Pippa M Simpson
- Departments of Pediatrics and Pharmacology and Toxicology, Medical College of Wisconsin, and Children's Research Institute, Children's Hospital and Health Systems, Milwaukee, Wisconsin (N.L.G., J.D.S., D.G.M., K.Y., P.M.S., R.N.H.); and Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania (K.D., R.G., S.C.S.)
| | - Ronald N Hines
- Departments of Pediatrics and Pharmacology and Toxicology, Medical College of Wisconsin, and Children's Research Institute, Children's Hospital and Health Systems, Milwaukee, Wisconsin (N.L.G., J.D.S., D.G.M., K.Y., P.M.S., R.N.H.); and Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania (K.D., R.G., S.C.S.)
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42
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Vyhlidal CA, Bi C, Ye SQ, Leeder JS. Dynamics of Cytosine Methylation in the Proximal Promoters of CYP3A4 and CYP3A7 in Pediatric and Prenatal Livers. ACTA ACUST UNITED AC 2016; 44:1020-6. [PMID: 26772622 DOI: 10.1124/dmd.115.068726] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Accepted: 01/14/2016] [Indexed: 11/22/2022]
Abstract
Members of the human CYP3A family of metabolizing enzymes exhibit developmental changes in expression whereby CYP3A7 is expressed in fetal tissues, followed by a transition to expression of CYP3A4 in the first months of life. Despite knowledge about the general pattern of CYP3A activity in human development, the mechanisms that regulate developmental expression remain poorly understood. Epigenetic changes, including cytosine methylation, have been suggested to play a role in the regulation of CYP3A expression. The objective of this study was to investigate changes in cytosine methylation of the CYP3A4 and CYP3A7 genes in human pediatric and prenatal livers. The methylation status of cytosine-phospho-guanine dinucleotides was determined in 16 pediatric liver samples using methyl-seq and confirmed by bisulfite sequencing of 48 pediatric and 34 prenatal liver samples. Samples were separated by age into five groups (prenatal, < 1 year of age, 1.8-6 years, 7-11 years, and 12-17 years). Methyl-seq anaylsis revealed that cytosines in the proximal promoter of CYP3A7 are hypomethylated in neonates compared with adolescents (P < 0.001). In contrast, a cytosine 383 base pair upstream of CYP3A4 is hypermethylated in liver samples from neonates compared with adolescents (P = 0.00001). Developmental changes in methylation of cytosines in the proximal promoters of CYP3A4 and CYP3A7 in pediatric livers were confirmed by bisulfite sequencing. In addition, the methylation status of cytosine in the CYP3A4 and CYP3A7 proximal promoters correlated with changes in developmental expression of mRNA for the two enzymes.
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Affiliation(s)
- Carrie A Vyhlidal
- Division of Clinical Pharmacology, Toxicology and Therapeutic Innovation (C.A.V., C.B., J.S.L.), and Division of Experimental and Translational Genetics (S.Q.Y.), Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
| | - Chengpeng Bi
- Division of Clinical Pharmacology, Toxicology and Therapeutic Innovation (C.A.V., C.B., J.S.L.), and Division of Experimental and Translational Genetics (S.Q.Y.), Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
| | - Shui Qing Ye
- Division of Clinical Pharmacology, Toxicology and Therapeutic Innovation (C.A.V., C.B., J.S.L.), and Division of Experimental and Translational Genetics (S.Q.Y.), Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
| | - J Steven Leeder
- Division of Clinical Pharmacology, Toxicology and Therapeutic Innovation (C.A.V., C.B., J.S.L.), and Division of Experimental and Translational Genetics (S.Q.Y.), Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri
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43
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Ruth KS, Campbell PJ, Chew S, Lim EM, Hadlow N, Stuckey BGA, Brown SJ, Feenstra B, Joseph J, Surdulescu GL, Zheng HF, Richards JB, Murray A, Spector TD, Wilson SG, Perry JRB. Genome-wide association study with 1000 genomes imputation identifies signals for nine sex hormone-related phenotypes. Eur J Hum Genet 2015; 24:284-90. [PMID: 26014426 PMCID: PMC4564946 DOI: 10.1038/ejhg.2015.102] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 03/02/2015] [Accepted: 03/10/2015] [Indexed: 12/22/2022] Open
Abstract
Genetic factors contribute strongly to sex hormone levels, yet knowledge of the regulatory mechanisms remains incomplete. Genome-wide association studies (GWAS) have identified only a small number of loci associated with sex hormone levels, with several reproductive hormones yet to be assessed. The aim of the study was to identify novel genetic variants contributing to the regulation of sex hormones. We performed GWAS using genotypes imputed from the 1000 Genomes reference panel. The study used genotype and phenotype data from a UK twin register. We included 2913 individuals (up to 294 males) from the Twins UK study, excluding individuals receiving hormone treatment. Phenotypes were standardised for age, sex, BMI, stage of menstrual cycle and menopausal status. We tested 7 879 351 autosomal SNPs for association with levels of dehydroepiandrosterone sulphate (DHEAS), oestradiol, free androgen index (FAI), follicle-stimulating hormone (FSH), luteinizing hormone (LH), prolactin, progesterone, sex hormone-binding globulin and testosterone. Eight independent genetic variants reached genome-wide significance (P<5 × 10−8), with minor allele frequencies of 1.3–23.9%. Novel signals included variants for progesterone (P=7.68 × 10−12), oestradiol (P=1.63 × 10−8) and FAI (P=1.50 × 10−8). A genetic variant near the FSHB gene was identified which influenced both FSH (P=1.74 × 10−8) and LH (P=3.94 × 10−9) levels. A separate locus on chromosome 7 was associated with both DHEAS (P=1.82 × 10−14) and progesterone (P=6.09 × 10−14). This study highlights loci that are relevant to reproductive function and suggests overlap in the genetic basis of hormone regulation.
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Affiliation(s)
- Katherine S Ruth
- Genetics of Complex Traits, University of Exeter Medical School, University of Exeter, Exeter, UK
| | - Purdey J Campbell
- Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands, Australia
| | - Shelby Chew
- Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands, Australia
| | - Ee Mun Lim
- Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands, Australia.,Pathwest Laboratory Medicine WA, Nedlands, Australia
| | - Narelle Hadlow
- Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands, Australia.,Pathwest Laboratory Medicine WA, Nedlands, Australia
| | - Bronwyn G A Stuckey
- Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands, Australia.,School of Medicine and Pharmacology, University of Western Australia, Nedlands, Australia
| | - Suzanne J Brown
- Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands, Australia
| | - Bjarke Feenstra
- Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark
| | - John Joseph
- Pathwest Laboratory Medicine WA, Nedlands, Australia
| | - Gabriela L Surdulescu
- Department of Twin Research and Genetic Epidemiology, King's College London, London, UK
| | - Hou Feng Zheng
- Department of Medicine, Human Genetics, McGill University, Montreal, Canada
| | - J Brent Richards
- Department of Twin Research and Genetic Epidemiology, King's College London, London, UK.,Department of Medicine, Human Genetics, McGill University, Montreal, Canada.,Lady Davis Institute, McGill University, Montreal, Canada
| | - Anna Murray
- Genetics of Complex Traits, University of Exeter Medical School, University of Exeter, Exeter, UK
| | - Tim D Spector
- Department of Twin Research and Genetic Epidemiology, King's College London, London, UK
| | - Scott G Wilson
- Endocrinology and Diabetes, Sir Charles Gairdner Hospital, Nedlands, Australia.,School of Medicine and Pharmacology, University of Western Australia, Nedlands, Australia.,Department of Twin Research and Genetic Epidemiology, King's College London, London, UK
| | - John R B Perry
- Genetics of Complex Traits, University of Exeter Medical School, University of Exeter, Exeter, UK.,Department of Twin Research and Genetic Epidemiology, King's College London, London, UK.,MRC Epidemiology Unit, Institute of Metabolic Science, Addenbrooke's Hospital, University of Cambridge, Hills Road, Cambridge, UK
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44
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Weiß F, Schnabel A, Planatscher H, van den Berg BHJ, Serschnitzki B, Nuessler AK, Thasler WE, Weiss TS, Reuss M, Stoll D, Templin MF, Joos TO, Marcus K, Poetz O. Indirect protein quantification of drug-transforming enzymes using peptide group-specific immunoaffinity enrichment and mass spectrometry. Sci Rep 2015; 5:8759. [PMID: 25737130 PMCID: PMC4348618 DOI: 10.1038/srep08759] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Accepted: 02/03/2015] [Indexed: 02/07/2023] Open
Abstract
Immunoaffinity enrichment of proteotypic peptides, coupled with selected reaction monitoring, enables indirect protein quantification. However the lack of suitable antibodies limits its widespread application. We developed a method in which multi-specific antibodies are used to enrich groups of peptides, thus facilitating multiplexed quantitative protein assays. We tested this strategy in a pharmacokinetic experiment by targeting a group of homologous drug transforming proteins in human hepatocytes. Our results indicate the generic applicability of this method to any biological system.
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Affiliation(s)
- Frederik Weiß
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstr. 55, Reutlingen, Germany
| | - Anke Schnabel
- Medizinisches Proteom-Center, Ruhr-University Bochum, Bochum, Germany
| | - Hannes Planatscher
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstr. 55, Reutlingen, Germany
| | - Bart H J van den Berg
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstr. 55, Reutlingen, Germany
| | | | - Andreas K Nuessler
- Department of Traumatology, Eberhard Karls Universität Tübingen, Tuebingen, Germany
| | | | - Thomas S Weiss
- Department of Pediatrics and Juvenile Medicine, Regensburg University Hospital, Regensburg, Germany
| | - Matthias Reuss
- Center Systems Biology, University of Stuttgart, Stuttgart, Germany
| | - Dieter Stoll
- University of Applied Sciences, Albstadt Sigmaringen, Germany
| | - Markus F Templin
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstr. 55, Reutlingen, Germany
| | - Thomas O Joos
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstr. 55, Reutlingen, Germany
| | - Katrin Marcus
- Medizinisches Proteom-Center, Ruhr-University Bochum, Bochum, Germany
| | - Oliver Poetz
- NMI Natural and Medical Sciences Institute at the University of Tübingen, Markwiesenstr. 55, Reutlingen, Germany
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45
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Abstract
CYP3A ranks among the most abundant cytochrome P450 enzymes in the liver, playing a dominant role in metabolic elimination of clinically used drugs. A main member in CYP3A family, CYP3A4 expression and activity vary considerably among individuals, attributable to genetic and non-genetic factors, affecting drug dosage and efficacy. However, the extent of genetic influence has remained unclear. This review assesses current knowledge on the genetic factors influencing CYP3A4 activity. Coding region CYP3A4 polymorphisms are rare and account for only a small portion of inter-person variability in CYP3A metabolism. Except for the promoter allele CYP3A4*1B with ambiguous effect on expression, common CYP3A4 regulatory polymorphisms were thought to be lacking. Recent studies have identified a relatively common regulatory polymorphism, designated CYP3A4*22 with robust effects on hepatic CYP3A4 expression. Combining CYP3A4*22 with CYP3A5 alleles *1, *3 and *7 has promise as a biomarker predicting overall CYP3A activity. Also contributing to variable expression, the role of polymorphisms in transcription factors and microRNAs is discussed.
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Affiliation(s)
- Danxin Wang
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-614-292-7336; Fax: +1-614-292-7232
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Carboxymefloquine, the major metabolite of the antimalarial drug mefloquine, induces drug-metabolizing enzyme and transporter expression by activation of pregnane X receptor. Antimicrob Agents Chemother 2014; 59:96-104. [PMID: 25313206 DOI: 10.1128/aac.04140-14] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Malaria patients are frequently coinfected with HIV and mycobacteria causing tuberculosis, which increases the use of coadministered drugs and thereby enhances the risk of pharmacokinetic drug-drug interactions. Activation of the pregnane X receptor (PXR) by xenobiotics, which include many drugs, induces drug metabolism and transport, thereby resulting in possible attenuation or loss of the therapeutic responses to the drugs being coadministered. While several artemisinin-type antimalarial drugs have been shown to activate PXR, data on nonartemisinin-type antimalarials are still missing. Therefore, this study aimed to elucidate the potential of nonartemisinin antimalarial drugs and drug metabolites to activate PXR. We screened 16 clinically used antimalarial drugs and six major drug metabolites for binding to PXR using the two-hybrid PXR ligand binding domain assembly assay; this identified carboxymefloquine, the major and pharmacologically inactive metabolite of the antimalarial drug mefloquine, as a potential PXR ligand. Two-hybrid PXR-coactivator and -corepressor interaction assays and PXR-dependent promoter reporter gene assays confirmed carboxymefloquine to be a novel PXR agonist which specifically activated the human receptor. In the PXR-expressing intestinal LS174T cells and in primary human hepatocytes, carboxymefloquine induced the expression of drug-metabolizing enzymes and transporters on the mRNA and protein levels. The crucial role of PXR for the carboxymefloquine-dependent induction of gene expression was confirmed by small interfering RNA (siRNA)-mediated knockdown of the receptor. Thus, the clinical use of mefloquine may result in pharmacokinetic drug-drug interactions by means of its metabolite carboxymefloquine. Whether these in vitro findings are of in vivo relevance has to be addressed in future clinical drug-drug interaction studies.
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47
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Zientek MA, Youdim K. Reaction phenotyping: advances in the experimental strategies used to characterize the contribution of drug-metabolizing enzymes. Drug Metab Dispos 2014; 43:163-81. [PMID: 25297949 DOI: 10.1124/dmd.114.058750] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
During the process of drug discovery, the pharmaceutical industry is faced with numerous challenges. One challenge is the successful prediction of the major routes of human clearance of new medications. For compounds cleared by metabolism, accurate predictions help provide an early risk assessment of their potential to exhibit significant interpatient differences in pharmacokinetics via routes of metabolism catalyzed by functionally polymorphic enzymes and/or clinically significant metabolic drug-drug interactions. This review details the most recent and emerging in vitro strategies used by drug metabolism and pharmacokinetic scientists to better determine rates and routes of metabolic clearance and how to translate these parameters to estimate the amount these routes contribute to overall clearance, commonly referred to as fraction metabolized. The enzymes covered in this review include cytochrome P450s together with other enzymatic pathways whose involvement in metabolic clearance has become increasingly important as efforts to mitigate cytochrome P450 clearance are successful. Advances in the prediction of the fraction metabolized include newly developed methods to differentiate CYP3A4 from the polymorphic enzyme CYP3A5, scaling tools for UDP-glucuronosyltranferase, and estimation of fraction metabolized for substrates of aldehyde oxidase.
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Affiliation(s)
- Michael A Zientek
- Worldwide Research and Development, Pharmacokinetics, Pharmacodynamics, and Metabolism, Pfizer Inc., San Diego, California (M.A.Z.); and Roche Pharmaceutical Research and Early Development, Pharmaceutical Sciences, F. Hoffmann-La Roche Ltd, Roche Innovation Center Basel, Basel, Switzerland (K.Y.)
| | - Kuresh Youdim
- Worldwide Research and Development, Pharmacokinetics, Pharmacodynamics, and Metabolism, Pfizer Inc., San Diego, California (M.A.Z.); and Roche Pharmaceutical Research and Early Development, Pharmaceutical Sciences, F. Hoffmann-La Roche Ltd, Roche Innovation Center Basel, Basel, Switzerland (K.Y.)
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48
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Bitter A, Rümmele P, Klein K, Kandel BA, Rieger JK, Nüssler AK, Zanger UM, Trauner M, Schwab M, Burk O. Pregnane X receptor activation and silencing promote steatosis of human hepatic cells by distinct lipogenic mechanisms. Arch Toxicol 2014; 89:2089-103. [PMID: 25182422 DOI: 10.1007/s00204-014-1348-x] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 08/25/2014] [Indexed: 12/20/2022]
Abstract
In addition to its well-characterized role in the regulation of drug metabolism and transport by xenobiotics, pregnane X receptor (PXR) critically impacts on lipid homeostasis. In mice, both ligand-dependent activation and knockout of PXR were previously shown to promote hepatic steatosis. To elucidate the respective pathways in human liver, we generated clones of human hepatoma HepG2 cells exhibiting different PXR protein levels, and analyzed effects of PXR activation and knockdown on steatosis and expression of lipogenic genes. Ligand-dependent activation as well as knockdown of PXR resulted in increased steatosis in HepG2 cells. Activation of PXR induced the sterol regulatory element-binding protein (SREBP) 1-dependent lipogenic pathway via PXR-dependent induction of SREBP1a, which was confirmed in primary human hepatocytes. Inhibiting SREBP1 activity by blocking the cleavage-dependent maturation of SREBP1 protein impaired the induction of lipogenic SREBP1 target genes and triglyceride accumulation by PXR activation. On the other hand, PXR knockdown resulted in up-regulation of aldo-keto reductase (AKR) 1B10, which enhanced the acetyl-CoA carboxylase (ACC)-catalyzed reaction step of de novo lipogenesis. In a cohort of human liver samples histologically classified for non-alcoholic fatty liver disease, AKR1B10, SREBP1a and SREBP1 lipogenic target genes proved to be up-regulated in steatohepatitis, while PXR protein was reduced. In summary, our data suggest that activation and knockdown of PXR in human hepatic cells promote de novo lipogenesis and steatosis by induction of the SREBP1 pathway and AKR1B10-mediated increase of ACC activity, respectively, thus providing mechanistic explanations for a putative dual role of PXR in the pathogenesis of steatohepatitis.
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Affiliation(s)
- Andreas Bitter
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Auerbachstrasse 112, 70376, Stuttgart, Germany
| | - Petra Rümmele
- Institute of Pathology, University of Regensburg, Regensburg, Germany
| | - Kathrin Klein
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Auerbachstrasse 112, 70376, Stuttgart, Germany
| | - Benjamin A Kandel
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Auerbachstrasse 112, 70376, Stuttgart, Germany
| | - Jessica K Rieger
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Auerbachstrasse 112, 70376, Stuttgart, Germany
| | - Andreas K Nüssler
- Department of Traumatology, University of Tübingen, Tübingen, Germany
| | - Ulrich M Zanger
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Auerbachstrasse 112, 70376, Stuttgart, Germany
| | - Michael Trauner
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Matthias Schwab
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Auerbachstrasse 112, 70376, Stuttgart, Germany
- Department of Clinical Pharmacology, Institute of Experimental and Clinical Pharmacology and Toxicology, University Hospital, Tübingen, Germany
| | - Oliver Burk
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Auerbachstrasse 112, 70376, Stuttgart, Germany.
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49
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Mathäs M, Burk O, Gödtel-Armbrust U, Herlyn H, Wojnowski L, Windshügel B. Structural and functional similarity of amphibian constitutive androstane receptor with mammalian pregnane X receptor. PLoS One 2014; 9:e96263. [PMID: 24797902 PMCID: PMC4010427 DOI: 10.1371/journal.pone.0096263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 04/04/2014] [Indexed: 11/19/2022] Open
Abstract
The nuclear receptors and xenosensors constitutive androstane receptor (CAR, NR1I3) and pregnane X receptor (PXR, NR1I2) induce the expression of xenobiotic metabolizing enzymes and transporters, which also affects various endobiotics. While human and mouse CAR feature a high basal activity and low induction upon ligand exposure, we recently identified two constitutive androstane receptors in Xenopus laevis (xlCARα and β) that possess PXR-like characteristics such as low basal activity and activation in response to structurally diverse compounds. Using a set of complementary computational and biochemical approaches we provide evidence for xlCARα being the structural and functional counterpart of mammalian PXR. A three-dimensional model of the xlCARα ligand-binding domain (LBD) reveals a human PXR-like L-shaped ligand binding pocket with a larger volume than the binding pockets in human and murine CAR. The shape and amino acid composition of the ligand-binding pocket of xlCAR suggests PXR-like binding of chemically diverse ligands which was confirmed by biochemical methods. Similarly to PXR, xlCARα possesses a flexible helix 11’. Modest increase in the recruitment of coactivator PGC-1α may contribute to the enhanced basal activity of three gain-of-function xlCARα mutants humanizing key LBD amino acid residues. xlCARα and PXR appear to constitute an example of convergent evolution.
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Affiliation(s)
- Marianne Mathäs
- Department of Pharmacology, University Medical Center, Mainz, Germany
| | - Christian Nußhag
- Department of Pharmacology, University Medical Center, Mainz, Germany
| | - Oliver Burk
- Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, Germany
| | | | - Holger Herlyn
- Institute of Anthropology, Johannes Gutenberg-University, Mainz, Germany
| | - Leszek Wojnowski
- Department of Pharmacology, University Medical Center, Mainz, Germany
| | - Björn Windshügel
- Centre for Bioinformatics, University of Hamburg, Hamburg, Germany
- European ScreeningPort GmbH, Hamburg, Germany
- * E-mail:
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50
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