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Lethe MCL, Paris V, Wang X, Chan CTY. Similarities in Structure and Function of UDP-Glycosyltransferase Homologs from Human and Plants. Int J Mol Sci 2024; 25:2782. [PMID: 38474028 PMCID: PMC10932239 DOI: 10.3390/ijms25052782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 02/23/2024] [Accepted: 02/25/2024] [Indexed: 03/14/2024] Open
Abstract
The uridine diphosphate glycosyltransferase (UGT) superfamily plays a key role in the metabolism of xenobiotics and metabolic wastes, which is essential for detoxifying those species. Over the last several decades, a huge effort has been put into studying human and mammalian UGT homologs, but family members in other organisms have been explored much less. Potentially, other UGT homologs can have desirable substrate specificity and biological activities that can be harnessed for detoxification in various medical settings. In this review article, we take a plant UGT homology, UGT71G1, and compare its structural and biochemical properties with the human homologs. These comparisons suggest that even though mammalian and plant UGTs are functional in different environments, they may support similar biochemical activities based on their protein structure and function. The known biological functions of these homologs are discussed so as to provide insights into the use of UGT homologs from other organisms for addressing human diseases related to UGTs.
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Affiliation(s)
- Mary Caroline L. Lethe
- Department of Biomedical Engineering, College of Engineering, University of North Texas, 3940 N Elm Street, Denton, TX 76207, USA (V.P.)
| | - Vincent Paris
- Department of Biomedical Engineering, College of Engineering, University of North Texas, 3940 N Elm Street, Denton, TX 76207, USA (V.P.)
| | - Xiaoqiang Wang
- Department of Biological Sciences, College of Science, University of North Texas, 1155 Union Circle #305220, Denton, TX 76203, USA;
- BioDiscovery Institute, University of North Texas, 1155 Union Circle #305220, Denton, TX 76203, USA
| | - Clement T. Y. Chan
- Department of Biomedical Engineering, College of Engineering, University of North Texas, 3940 N Elm Street, Denton, TX 76207, USA (V.P.)
- BioDiscovery Institute, University of North Texas, 1155 Union Circle #305220, Denton, TX 76203, USA
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Osborne MJ, Sulekha A, Culjkovic-Kraljacic B, Gasiorek J, Ruediger E, Jolicouer E, Marinier A, Assouline S, Borden KLB. Medicinal Chemistry and NMR Driven Discovery of Novel UDP-glucuronosyltransferase 1A Inhibitors That Overcome Therapeutic Resistance in Cells. J Mol Biol 2024; 436:168378. [PMID: 38043731 PMCID: PMC10841659 DOI: 10.1016/j.jmb.2023.168378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 11/24/2023] [Accepted: 11/28/2023] [Indexed: 12/05/2023]
Abstract
The UDP glucuronosyltransferases (UGT) deactivate many therapeutics via glucuronidation while being required for clearance of normal metabolites and xenobiotics. There are 19 UGT enzymes categorized into UGT1A and UGT2B families based on sequence conservation. This presents a challenge in terms of targeting specific UGTs to overcome drug resistance without eliciting overt toxicity. Here, we identified for the first time that UGT1A4 is highly elevated in acute myeloid leukemia (AML) patients and its reduction corresponded to objective clinical responses. To develop inhibitors to UGT1A4, we leveraged previous NMR-based fragment screening data against the C-terminal domain of UGT1A (UGT1A-C). NMR and medicinal chemistry strategies identified novel chemical matter based on fragment compounds with the capacity to bind ∼20 fold more tightly to UGT1A-C (Kd ∼ 600 μM vs ∼30 μM). Some compounds differentially inhibited UGT1A4 versus UGT1A1 enzyme activity and restored drug sensitivity in resistant human cancer cells. NMR-based NOE experiments revealed these novel compounds recognised a region distal to the catalytic site suggestive of allosteric regulation. This binding region is poorly conserved between UGT1A and UGT2B C-terminal sequences, which otherwise exhibit high similarity. Consistently, these compounds did not bind to the C-terminal domain of UGT2B7 nor a triple mutant of UGT1A-C replaced with UGT2B7 residues in this region. Overall, we discovered a site on UGTs that can be leveraged to differentially target UGT1As and UGT2Bs, identified UGT1A4 as a therapeutic target, and found new chemical matter that binds the UGT1A C-terminus, inhibits glucuronidation and restores drug sensitivity.
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Affiliation(s)
- Michael J Osborne
- Institute for Research in Immunology and Cancer and Department of Pathology and Cell Biology, University of Montreal, Montreal, Quebec, Canada
| | - Anamika Sulekha
- Institute for Research in Immunology and Cancer and Department of Pathology and Cell Biology, University of Montreal, Montreal, Quebec, Canada
| | - Biljana Culjkovic-Kraljacic
- Institute for Research in Immunology and Cancer and Department of Pathology and Cell Biology, University of Montreal, Montreal, Quebec, Canada
| | - Jadwiga Gasiorek
- Institute for Research in Immunology and Cancer and Department of Pathology and Cell Biology, University of Montreal, Montreal, Quebec, Canada
| | - Edward Ruediger
- Drug Discovery Unit, Institute for Research in Immunology and Cancer, University of Montreal, Montreal, Quebec, Canada
| | - Eric Jolicouer
- Drug Discovery Unit, Institute for Research in Immunology and Cancer, University of Montreal, Montreal, Quebec, Canada
| | - Anne Marinier
- Drug Discovery Unit, Institute for Research in Immunology and Cancer, University of Montreal, Montreal, Quebec, Canada
| | - Sarit Assouline
- Jewish General Hospital and McGill University, 3755 Cote Ste Catherine, Montreal, Quebec H3T1E2, Canada
| | - Katherine L B Borden
- Institute for Research in Immunology and Cancer and Department of Pathology and Cell Biology, University of Montreal, Montreal, Quebec, Canada
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Wang Z, Jiang L, Wang X, Yin H, Wang Z, Lv X, Liu Y. Cabozantinib Carries the Risk of Drug-Drug Interactions via Inhibition of UDPglucuronosyltransferase (UGT) 1A9. Curr Drug Metab 2022; 23:912-919. [PMID: 36306450 DOI: 10.2174/1389200224666221028140652] [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: 05/20/2022] [Revised: 09/12/2022] [Accepted: 09/28/2022] [Indexed: 01/05/2023]
Abstract
BACKGROUND Cabozantinib is a multiple receptor tyrosine kinases inhibitor (TKI) approved to treat progressive, metastatic medullary thyroid cancer, advanced renal cell carcinoma, and hepatocellular carcinoma. Drugdrug interactions (DDIs) for cabozantinib have been identified involving the role of cytochromes P450. Although the previous study reported that cabozantinib showed a slight inhibition of UDP-glucuronosyltransferase (UGT) 1A1 at the highest concentration tested, there are no reports on the potential for UGTs-mediated-DDIs. Hence, the current study aims to address this knowledge gap. OBJECTIVE This study aimed to investigate the inhibitory effect of cabozantinib on human UGTs and to quantitatively evaluate the DDI potential via UGT inhibition. METHODS The inhibitory effects of cabozantinib on UGTs were determined by measuring the formation rates for 4- methylumbelliferone (4-MU) glucuronide and trifluoperazine N-glucuronide using recombinant human UGT isoforms in the absence or presence of cabozantinib. Inhibition kinetic studies were conducted to determine the type of inhibition of cabozantinib on UGTs and the corresponding inhibition constant (Ki) value. In vitro-in vivo extrapolation (IVIVE) was further employed to predict the potential risk of DDI in vivo. RESULTS Cabozantinib displayed potent inhibition of UGT1A1, 1A3, 1A4, 1A6, 1A7, 1A8, 1A9, 1A10, 2B7, and 2B15. Cabozantinib exhibited noncompetitive inhibition towards UGT1A1 and 1A3 and inhibition towards UGT1A7 and 1A9. The Ki,u values (mean ± standard deviation) were calculated to be 2.15±0.11 μM, 0.83±0.05 μM, 0.75±0.04 μM and 0.18 ± 0.10 μM for UGT1A1, 1A3, 1A7 and 1A9, respectively. Co-administration of cabozantinib at the clinically approved dose of 60 mg/day or 140 mg/day may result in approximately a 26% to 60% increase in the systemic exposure of drugs predominantly cleared by UGT1A9, implying a high risk of DDIs. CONCLUSION Cabozantinib has the potential to cause DDIs via the inhibition of UGT1A9; therefore, additional attention should be paid to the safety of the combined use of cabozantinib and drugs metabolized by UGT1A9.
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Affiliation(s)
- Zhe Wang
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin 124221, China
| | - Lili Jiang
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin 124221, China
| | - Xiaoyu Wang
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin 124221, China
| | - Hang Yin
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin 124221, China
| | - Zhen Wang
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin 124221, China
| | - Xin Lv
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin 124221, China
| | - Yong Liu
- School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin 124221, China
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Establishment of the experimental procedure for prediction of conjugation capacity in mutant UGT1A1. PLoS One 2019; 14:e0225244. [PMID: 31730632 PMCID: PMC6857941 DOI: 10.1371/journal.pone.0225244] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 10/31/2019] [Indexed: 12/28/2022] Open
Abstract
UDP-glucuronosyltransferase 1A1 (UGT1A1) is an enzyme that is found in the endoplasmic reticulum membrane and can reportedly have a large number of amino acid substitutions that result in the reduction of glucuronidation capacity. For example, adverse drug reactions when patients receive CPT-11 (irinotecan) such as in cancer chemotherapy are caused by amino acid substitutions in UGT1A1. We previously found that the extent of the docking when the hydroxyl residue of bilirubin was oriented toward UDP-glucuronic acid correlated with in vitro conjugation capacity. In this study, we analyzed the conformation of mutant UGT1A1s by means of structural optimization with water and lipid bilayers instead of the optimization in vacuo that we used in our previous study. We then derived a mathematical model that can predict the conjugation capacities of mutant UGT1A1s by using results of substrate docking in silico and results of in vitro analysis of glucuronidation of acetaminophen and 17β-estradiol by UGT1A1s. This experimental procedure showed that the in silico conjugation capacities of other mutant UGT1A1s with bilirubin or SN-38 were similar to reported in vitro conjugation capacities. Our results suggest that this experimental procedure described herein can correctly predict the conjugation capacities of mutant UGT1A1s and any substrate.
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Osborne MJ, Coutinho de Oliveira L, Volpon L, Zahreddine HA, Borden KLB. Overcoming Drug Resistance through the Development of Selective Inhibitors of UDP-Glucuronosyltransferase Enzymes. J Mol Biol 2018; 431:258-272. [PMID: 30428301 DOI: 10.1016/j.jmb.2018.11.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 10/18/2018] [Accepted: 11/05/2018] [Indexed: 12/26/2022]
Abstract
Drug resistance is a major cause of cancer-related mortality. Glucuronidation of drugs via elevation of UDP-glucuronosyltransferases (UGT1As) correlates with clinical resistance. The nine UGT1A family members have broad substrate specificities attributed to their variable N-terminal domains and share a common C-terminal domain. Development of UGT1As as pharmacological targets has been hampered by toxicity of pan-UGT inhibitors and by difficulty in isolating pure N-terminal domains or full-length proteins. Here, we developed a strategy to target selected UGT1As which exploited the biochemical tractability of the C-domain and its ability to allosterically communicate with the catalytic site. By combining NMR fragment screening with in vitro glucuronidation assays, we identified inhibitors selective for UGT1A4. Significantly, these compounds selectively restored sensitivity in resistant cancer cells only for substrates of the targeted UGT1A. This strategy represents a crucial first step toward developing compounds to overcome unwanted glucuronidation thereby reversing resistance in patients.
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Affiliation(s)
- Michael J Osborne
- Institute of Research in Immunology and Cancer (IRIC), Department of Pathology and Cell Biology, Université de Montréal, Pavilion Marcelle-Coutu, Chemin Polytechnique, Montreal, QC, Canada
| | - Luciana Coutinho de Oliveira
- Institute of Research in Immunology and Cancer (IRIC), Department of Pathology and Cell Biology, Université de Montréal, Pavilion Marcelle-Coutu, Chemin Polytechnique, Montreal, QC, Canada
| | - Laurent Volpon
- Institute of Research in Immunology and Cancer (IRIC), Department of Pathology and Cell Biology, Université de Montréal, Pavilion Marcelle-Coutu, Chemin Polytechnique, Montreal, QC, Canada
| | - Hiba Ahmad Zahreddine
- Institute of Research in Immunology and Cancer (IRIC), Department of Pathology and Cell Biology, Université de Montréal, Pavilion Marcelle-Coutu, Chemin Polytechnique, Montreal, QC, Canada
| | - Katherine L B Borden
- Institute of Research in Immunology and Cancer (IRIC), Department of Pathology and Cell Biology, Université de Montréal, Pavilion Marcelle-Coutu, Chemin Polytechnique, Montreal, QC, Canada.
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Flynn TJ, Vohra SN. Simultaneous determination of intestinal permeability and potential drug interactions of complex mixtures using Caco-2 cells and high-resolution mass spectrometry: Studies with Rauwolfia serpentina extract. Chem Biol Interact 2018; 290:37-43. [PMID: 29782822 DOI: 10.1016/j.cbi.2018.05.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 04/30/2018] [Accepted: 05/16/2018] [Indexed: 01/07/2023]
Abstract
Caco-2 cells are a commonly used model for estimating the intestinal bioavailability of single chemical entity pharmaceuticals. Caco-2 cells, when induced with calcitriol, also express other biological functions such as phase I (CYP) and phase II (glucuronosyltransferases) drug metabolizing enzymes which are relevant to drug-supplement interactions. Intestinal bioavailability is an important factor in the overall safety assessment of products consumed orally. Foods, including herbal dietary supplements, are complex substances with multiple chemical components. Because of potential interactions between components of complex mixtures, more reliable safety assessments can be obtained by studying the commercial products "as consumed" rather than by testing individual chemical components one at a time. The present study evaluated the apparent intestinal permeability (Papp) of a model herbal extract, Rauwolfia serpentina, using both whole plant extracts and the individual purified Rauwolfia alkaloids. All test compounds, endpoint substrates, and their metabolites were quantified using liquid chromatography and high-resolution mass spectrometry. The Papp values for individual Rauwolfia alkaloids were comparable whether measured individually or as components of the complete extract. Both Rauwolfia extract and all individual Rauwolfia alkaloids except yohimbine inhibited CYP3A4 activity (midazolam 1'-hydroxylation). Both Rauwolfia extract and all individual Rauwolfia alkaloids except corynanthine and reserpic acid significantly increased glucuronosyltransferase activity (glucuronidation of 4-methylumbelliferone). The positive control, ketoconazole, significantly inhibited both CYP3A4 and glucuronosyltransferase activities. These findings suggest that the Caco-2 assay is capable of simultaneously identifying both bioavailability and potentially hazardous intestinal drug-supplement interactions in complex mixtures.
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Affiliation(s)
- Thomas J Flynn
- Division of Applied Regulatory Toxicology, U.S. Food and Drug Administration, 8301 Muirkirk Road, Laurel, MD, 20708, USA.
| | - Sanah N Vohra
- Division of Applied Regulatory Toxicology, U.S. Food and Drug Administration, 8301 Muirkirk Road, Laurel, MD, 20708, USA.
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7
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Brazier‐Hicks M, Gershater M, Dixon D, Edwards R. Substrate specificity and safener inducibility of the plant UDP-glucose-dependent family 1 glycosyltransferase super-family. PLANT BIOTECHNOLOGY JOURNAL 2018; 16:337-348. [PMID: 28640934 PMCID: PMC5785338 DOI: 10.1111/pbi.12775] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 06/10/2017] [Accepted: 06/13/2017] [Indexed: 05/05/2023]
Abstract
Plants contain large numbers of family 1 UDP-glucose-dependent glycosyltransferases (UGTs), including members that conjugate xenobiotics. Arabidopsis contains 107 UGT genes with 99 family members successfully expressed as glutathione transferase (GST)-fusion proteins in E. coli. A high-throughput catalytic screen was developed based on quantification of the fusion by measuring GST activity. UGT activity using UDP-glucose as donor was then determined using 11 synthetic acceptors bearing hydroxyl, amino and thiol groups that had been shown to undergo conjugation in plant extracts. In total, 44 UGTs, largely members of the D and E groups, were active towards xenobiotics, glucosylating phenol and thiol acceptors. In contrast, N-glucosyltransferase (NGT) activity was almost exclusively restricted to a single enzyme, UGT72B1. Using DNA microarrays, the induction of UGT transcripts following treatment with the herbicide safener fenclorim was compared in Arabidopsis and rice. D and L group members were the most safener-inducible UGTs in both species. The respective Arabidopsis enzymes showed low conjugating activity towards xenobiotics. Using Genevestigator, a small group of safened D and L UGTs were consistently induced in response to biotic and abiotic stress suggestive of protective activities beyond xenobiotic detoxification in both species. The induction of other detoxifying gene families following treatment with fenclorim, namely cytochromes P450 and glutathione transferases, further confirmed the selective enhancement of related subfamily members in the two species giving new insight into the safening response in cereals, where herbicide tolerance is enhanced compared with dicots, which are unresponsive to these treatments.
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Affiliation(s)
- Melissa Brazier‐Hicks
- School of Agriculture, Food and Rural DevelopmentNewcastle UniversityNewcastle upon TyneUK
| | | | | | - Robert Edwards
- School of Agriculture, Food and Rural DevelopmentNewcastle UniversityNewcastle upon TyneUK
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Righetti L, Fenclova M, Dellafiora L, Hajslova J, Stranska-Zachariasova M, Dall'Asta C. High resolution-ion mobility mass spectrometry as an additional powerful tool for structural characterization of mycotoxin metabolites. Food Chem 2017; 245:768-774. [PMID: 29287439 DOI: 10.1016/j.foodchem.2017.11.113] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Revised: 11/24/2017] [Accepted: 11/29/2017] [Indexed: 11/27/2022]
Abstract
This work was designed as a proof of concept, to demonstrate the successful use of the comparison between theoretical and experimental collision cross section (CCS) values to support the identification of isomeric forms. To this purpose, thirteen mycotoxins were considered and analyzed using drift time ion mobility mass spectrometry. A good linear correlation (r2 = 0.962) between theoretical and experimental CCS was found. The average ΔCCS was 3.2%, fully consistent with the acceptability threshold value commonly set at 5%. The agreement between theoretical and experimental CCS obtained for mycotoxin glucuronides suggested the potential of the CCS matching in supporting the annotation procedure.
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Affiliation(s)
- Laura Righetti
- Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Technicka 3, 166 28 Prague 6, Czech Republic; Department of Food and Drug, University of Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Marie Fenclova
- Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Technicka 3, 166 28 Prague 6, Czech Republic
| | - Luca Dellafiora
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
| | - Jana Hajslova
- Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Technicka 3, 166 28 Prague 6, Czech Republic
| | - Milena Stranska-Zachariasova
- Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology, Prague, Technicka 3, 166 28 Prague 6, Czech Republic.
| | - Chiara Dall'Asta
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 17/A, 43124 Parma, Italy
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Di Meo F, Fabre G, Berka K, Ossman T, Chantemargue B, Paloncýová M, Marquet P, Otyepka M, Trouillas P. In silico pharmacology: Drug membrane partitioning and crossing. Pharmacol Res 2016; 111:471-486. [PMID: 27378566 DOI: 10.1016/j.phrs.2016.06.030] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 06/30/2016] [Accepted: 06/30/2016] [Indexed: 01/09/2023]
Abstract
Over the past decade, molecular dynamics (MD) simulations have become particularly powerful to rationalize drug insertion and partitioning in lipid bilayers. MD simulations efficiently support experimental evidences, with a comprehensive understanding of molecular interactions driving insertion and crossing. Prediction of drug partitioning is discussed with respect to drug families (anesthetics; β-blockers; non-steroidal anti-inflammatory drugs; antioxidants; antiviral drugs; antimicrobial peptides). To accurately evaluate passive permeation coefficients turned out to be a complex theoretical challenge; however the recent methodological developments based on biased MD simulations are particularly promising. Particular attention is paid to membrane composition (e.g., presence of cholesterol), which influences drug partitioning and permeation. Recent studies concerning in silico models of membrane proteins involved in drug transport (influx and efflux) are also reported here. These studies have allowed gaining insight in drug efflux by, e.g., ABC transporters at an atomic resolution, explicitly accounting for the mandatory forces induced by the surrounded lipid bilayer. Large-scale conformational changes were thoroughly analyzed.
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Affiliation(s)
- Florent Di Meo
- INSERM UMR 850, Univ. Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87025, Limoges, France
| | - Gabin Fabre
- LCSN, Univ. Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87025, Limoges, France
| | - Karel Berka
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky̿ University, Olomouc, Czech Republic
| | - Tahani Ossman
- INSERM UMR 850, Univ. Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87025, Limoges, France
| | - Benjamin Chantemargue
- INSERM UMR 850, Univ. Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87025, Limoges, France; Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky̿ University, Olomouc, Czech Republic
| | - Markéta Paloncýová
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky̿ University, Olomouc, Czech Republic
| | - Pierre Marquet
- INSERM UMR 850, Univ. Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87025, Limoges, France
| | - Michal Otyepka
- Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky̿ University, Olomouc, Czech Republic
| | - Patrick Trouillas
- INSERM UMR 850, Univ. Limoges, Faculty of Pharmacy, 2 rue du Dr Marcland, F-87025, Limoges, France; Regional Centre for Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky̿ University, Olomouc, Czech Republic.
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Liu X, Cao YF, Dong PP, Zhu LL, Zhao Z, Wu X, Fu ZW, Huang CT, Fang ZZ, Sun HZ. The inhibition of UDP-glucuronosyltransferases (UGTs) by vitamin A. Xenobiotica 2016; 47:376-381. [PMID: 27359323 DOI: 10.1080/00498254.2016.1198841] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
1. The exposed level of vitamin A in plasma might be exceeded due to the both inadvertent and clinical utilization. The adverse effects of vitamin A have been frequently reported, however, the mechanism remains unclear. The inhibition of vitamin A on the activity of UDP-glucuronosyltransferases (UGTs) was determined using in vitro incubation system to explain the adverse effects of vitamin A from a new perspective. 2. UGT supersomes catalyzed glucuronidation of 4-methylumbelliferone (4-MU), trifluoperazine (TFP), and cotinine was used as the probe reaction to evaluate the inhibition of vitamin A toward UGT isoforms, and 100 μM of vitamin A significantly inhibited the activity of all the tested UGT isoforms. Vitamin A exerted competitive inhibition on the activity of UGT1A1, 2B4, 2B7, and 2B15, and the inhibition kinetic parameters (Ki) were calculated to be 31.1, 16.8, 2.2, and 11.6 μM for UGT1A1, 2B4, 2B7, and 2B15. In silico docking method was used to try to elucidate the inhibition mechanism of vitamin A toward UGT2B7. The results showed the significant contribution of hydrogen bonds and hydrophobic interaction on the UGT2B7 inhibition by vitamin A. 3. The present study provides a new perspective for the adverse effects of vitamin A through reporting the inhibition of vitamin A on the activity of important phase II drug-metabolizing enzymes UGTs, which benefits our deep understanding of mechanism of vitamin A's adverse effects when high exposure of vitamin A occurs.
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Affiliation(s)
- Xin Liu
- a First Affiliated Hospital of Liaoning Medical University , Jinzhou , Liaoning , China
| | - Yun-Feng Cao
- b RSKT Biopharma Inc. , Liaoning , China.,c Joint Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Sciences and the First Affiliated Hospital of Liaoning Medical University , Dalian , China
| | - Pei-Pei Dong
- d Institute of Integrative Medicine, Dalian Medical University , Dalian , China
| | - Liang-Liang Zhu
- e Department of Food Science and Technology , School of Life Sciences, Anqing Normal University , China
| | - Zhenying Zhao
- f Tianjin Union Medical Center, Hongqiao District , Tianjin , China , and
| | - Xue Wu
- b RSKT Biopharma Inc. , Liaoning , China.,c Joint Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Sciences and the First Affiliated Hospital of Liaoning Medical University , Dalian , China
| | - Zhi-Wei Fu
- b RSKT Biopharma Inc. , Liaoning , China.,c Joint Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Sciences and the First Affiliated Hospital of Liaoning Medical University , Dalian , China
| | - Chun-Ting Huang
- b RSKT Biopharma Inc. , Liaoning , China.,c Joint Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Sciences and the First Affiliated Hospital of Liaoning Medical University , Dalian , China
| | - Zhong-Ze Fang
- g Department of Toxicology , School of Public Health, Tianjin Medical University , Tianjin , China
| | - Hong-Zhi Sun
- a First Affiliated Hospital of Liaoning Medical University , Jinzhou , Liaoning , China
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12
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Yang S, De Boevre M, Zhang H, De Ruyck K, Sun F, Wang Z, Cao X, Shen J, De Saeger S, Zhang S. Unraveling the in vitro and in vivo metabolism of diacetoxyscirpenol in various animal species and human using ultrahigh-performance liquid chromatography-quadrupole/time-of-flight hybrid mass spectrometry. Anal Bioanal Chem 2015; 407:8571-83. [DOI: 10.1007/s00216-015-9016-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 08/17/2015] [Accepted: 08/27/2015] [Indexed: 10/23/2022]
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Tripathi SP, Prajapati R, Verma N, Sangamwar AT. Predicting substrate selectivity between UGT1A9 and UGT1A10 using molecular modelling and molecular dynamics approach. MOLECULAR SIMULATION 2015. [DOI: 10.1080/08927022.2015.1044451] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Jiang L, Liang SC, Wang C, Ge GB, Huo XK, Qi XY, Deng S, Liu KX, Ma XC. Identifying and applying a highly selective probe to simultaneously determine the O-glucuronidation activity of human UGT1A3 and UGT1A4. Sci Rep 2015; 5:9627. [PMID: 25884245 PMCID: PMC4401096 DOI: 10.1038/srep09627] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 03/11/2015] [Indexed: 02/06/2023] Open
Abstract
Glucuronidation mediated by uridine 5′-diphospho (UDP)-glucuronosyltransferase is an important detoxification pathway. However, identifying a selective probe of UDP- glucuronosyltransferase is complicated because of the significant overlapping substrate specificity displayed by the enzyme. In this paper, desacetylcinobufagin (DACB) 3-O- and 16-O-glucuronidation were found to be isoform-specific probe reactions for UGT1A4 and UGT1A3, respectively. DACB was well characterized as a probe for simultaneously determining the catalytic activities of O-glucuronidation mediated by UGT1A3 and UGT1A4 from various enzyme sources, through a sensitive analysis method.
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Affiliation(s)
- Li Jiang
- College of Pharmacy, Key Laboratory of Pharmacokinetic and Drug Transport of Liaoning, Academy of Integrative Medicine, Dalian Medical University, Dalian, 116044, China
| | - Si-Cheng Liang
- 1] Laboratory of Pharmaceutical Resource Discovery, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China [2] Graduate School of Chinese Academy of Sciences, Beijing, China
| | - Chao Wang
- College of Pharmacy, Key Laboratory of Pharmacokinetic and Drug Transport of Liaoning, Academy of Integrative Medicine, Dalian Medical University, Dalian, 116044, China
| | - Guang-Bo Ge
- Laboratory of Pharmaceutical Resource Discovery, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Xiao-Kui Huo
- College of Pharmacy, Key Laboratory of Pharmacokinetic and Drug Transport of Liaoning, Academy of Integrative Medicine, Dalian Medical University, Dalian, 116044, China
| | - Xiao-Yi Qi
- Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Sa Deng
- College of Pharmacy, Key Laboratory of Pharmacokinetic and Drug Transport of Liaoning, Academy of Integrative Medicine, Dalian Medical University, Dalian, 116044, China
| | - Ke-Xin Liu
- College of Pharmacy, Key Laboratory of Pharmacokinetic and Drug Transport of Liaoning, Academy of Integrative Medicine, Dalian Medical University, Dalian, 116044, China
| | - Xiao-Chi Ma
- College of Pharmacy, Key Laboratory of Pharmacokinetic and Drug Transport of Liaoning, Academy of Integrative Medicine, Dalian Medical University, Dalian, 116044, China
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15
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Guo B, Fang Z, Yang L, Xiao L, Xia Y, Gonzalez FJ, Zhu L, Cao Y, Ge G, Yang L, Sun H. Tissue and species differences in the glucuronidation of glabridin with UDP-glucuronosyltransferases. Chem Biol Interact 2015; 231:90-7. [PMID: 25765239 DOI: 10.1016/j.cbi.2015.03.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2014] [Revised: 02/10/2015] [Accepted: 03/02/2015] [Indexed: 02/04/2023]
Abstract
Glabridin (GA) has gained wide application in the cosmetics and food industry. This study was performed to investigate its metabolic inactivation and elimination by glucuronidation by use of liver and intestine microsomes from humans (HLM and HIM) and rats (RLM and RIM), and liver microsomes from cynomolgus monkeys and beagle dogs (CyLM and DLM). Both hydroxyl groups at the C2 and C4 positions of the B ring are conjugated to generate two mono-glucuronides (M1 and M2). HIM, RIM and RLM showed the most robust activity in catalyzing M2 formation with intrinsic clearance values (Clint) above 2000 μL/min/mg, with little measurable M1 formation activity. DLM displayed considerable activity both in M1 and M2 formation, with Clint values of 71 and 214 μL/min/mg, respectively, while HLM and CyLM exhibited low activities in catalyzing M1 and M2 formation, with Clint values all below 20 μL/min/mg. It is revealed that UGT1A1, 1A3, 1A9, 2B7, 2B15 and extrahepatic UGT1A8 and 1A10 are involved in GA glucuronidation. Nearly all UGTs preferred M2 formation except for UGT1A1. Notably, UGT1A8 displayed the highest activity with a Clint value more than 5-fold higher than the other isoforms. Chemical inhibition studies, using selective inhibitors of UGT1A1, 1A9, 2B7 and 1A8, further revealed that UGT1A8 contributed significantly to intestinal GA glucuronidation in humans. In summary, this in vitro study demonstrated large species differences in GA glucuronidation by liver and intestinal microsomes, and that intestinal UGTs are important for the pathway in humans.
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Affiliation(s)
- Bin Guo
- The First Affiliated Hospital of Liaoning Medical University, Jinzhou, China; Joint Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Sciences and The First Affiliated Hospital of Liaoning Medical University, Dalian, China.
| | - Zhongze Fang
- Department of Toxicology, School of Public Health, Tianjin Medical University, Tianjin, China; Joint Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Sciences and The First Affiliated Hospital of Liaoning Medical University, Dalian, China
| | - Lu Yang
- Joint Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Sciences and The First Affiliated Hospital of Liaoning Medical University, Dalian, China
| | - Ling Xiao
- The Centre for Drug and Food Safety Evaluation, School of Life Science, Anqing Normal University, Anqing, China
| | - Yangliu Xia
- Laboratory of Pharmaceutical Resource Discovery, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Frank J Gonzalez
- Laboratory of Metabolism, Center for Cancer Research, NCI, National Institutes of Health, USA
| | - Liangliang Zhu
- The Centre for Drug and Food Safety Evaluation, School of Life Science, Anqing Normal University, Anqing, China.
| | - Yunfeng Cao
- Joint Center for Translational Medicine, Dalian Institute of Chemical Physics, Chinese Academy of Sciences and The First Affiliated Hospital of Liaoning Medical University, Dalian, China; Key Laboratory of Contraceptives and Devices Research (NPFPC), Shanghai Engineer and Technology Research Center of Reproductive Health Drug and Devices, Shanghai Institute of Planned Parenthood Research, Shanghai, China
| | - Guangbo Ge
- Laboratory of Pharmaceutical Resource Discovery, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Ling Yang
- Laboratory of Pharmaceutical Resource Discovery, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Hongzhi Sun
- The First Affiliated Hospital of Liaoning Medical University, Jinzhou, China
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16
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Gufford BT, Chen G, Lazarus P, Graf TN, Oberlies NH, Paine MF. Identification of diet-derived constituents as potent inhibitors of intestinal glucuronidation. Drug Metab Dispos 2014; 42:1675-83. [PMID: 25008344 DOI: 10.1124/dmd.114.059451] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Drug-metabolizing enzymes within enterocytes constitute a key barrier to xenobiotic entry into the systemic circulation. Furanocoumarins in grapefruit juice are cornerstone examples of diet-derived xenobiotics that perpetrate interactions with drugs via mechanism-based inhibition of intestinal CYP3A4. Relative to intestinal CYP3A4-mediated inhibition, alternate mechanisms underlying dietary substance-drug interactions remain understudied. A working systematic framework was applied to a panel of structurally diverse diet-derived constituents/extracts (n = 15) as inhibitors of intestinal UDP-glucuronosyl transferases (UGTs) to identify and characterize additional perpetrators of dietary substance-drug interactions. Using a screening assay involving the nonspecific UGT probe substrate 4-methylumbelliferone, human intestinal microsomes, and human embryonic kidney cell lysates overexpressing gut-relevant UGT1A isoforms, 14 diet-derived constituents/extracts inhibited UGT activity by >50% in at least one enzyme source, prompting IC(50) determination. The IC(50) values of 13 constituents/extracts (≤10 μM with at least one enzyme source) were well below intestinal tissue concentrations or concentrations in relevant juices, suggesting that these diet-derived substances can inhibit intestinal UGTs at clinically achievable concentrations. Evaluation of the effect of inhibitor depletion on IC(50) determination demonstrated substantial impact (up to 2.8-fold shift) using silybin A and silybin B, two key flavonolignans from milk thistle (Silybum marianum) as exemplar inhibitors, highlighting an important consideration for interpretation of UGT inhibition in vitro. Results from this work will help refine a working systematic framework to identify dietary substance-drug interactions that warrant advanced modeling and simulation to inform clinical assessment.
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Affiliation(s)
- Brandon T Gufford
- Section of Experimental and Systems Pharmacology (B.T.G., M.F.P.) and Department of Pharmaceutical Sciences (G.C., P.L.), Washington State University College of Pharmacy, Spokane, Washington; and Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, North Carolina (T.N.G., N.H.O.)
| | - Gang Chen
- Section of Experimental and Systems Pharmacology (B.T.G., M.F.P.) and Department of Pharmaceutical Sciences (G.C., P.L.), Washington State University College of Pharmacy, Spokane, Washington; and Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, North Carolina (T.N.G., N.H.O.)
| | - Philip Lazarus
- Section of Experimental and Systems Pharmacology (B.T.G., M.F.P.) and Department of Pharmaceutical Sciences (G.C., P.L.), Washington State University College of Pharmacy, Spokane, Washington; and Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, North Carolina (T.N.G., N.H.O.)
| | - Tyler N Graf
- Section of Experimental and Systems Pharmacology (B.T.G., M.F.P.) and Department of Pharmaceutical Sciences (G.C., P.L.), Washington State University College of Pharmacy, Spokane, Washington; and Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, North Carolina (T.N.G., N.H.O.)
| | - Nicholas H Oberlies
- Section of Experimental and Systems Pharmacology (B.T.G., M.F.P.) and Department of Pharmaceutical Sciences (G.C., P.L.), Washington State University College of Pharmacy, Spokane, Washington; and Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, North Carolina (T.N.G., N.H.O.)
| | - Mary F Paine
- Section of Experimental and Systems Pharmacology (B.T.G., M.F.P.) and Department of Pharmaceutical Sciences (G.C., P.L.), Washington State University College of Pharmacy, Spokane, Washington; and Department of Chemistry and Biochemistry, University of North Carolina at Greensboro, Greensboro, North Carolina (T.N.G., N.H.O.)
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