1
|
Liu YZ, Yang K, Zhang W, Zhang Q, Liu TF, Xu T, Li Y, Ran RX, Yang K, Cao YF, Fang ZZ. Inhibition of human sulfotransferases (SULTs) by per- and polyfluoroalkyl substances (PFASs) and structure-activity relationship. Food Chem Toxicol 2023; 174:113664. [PMID: 36775137 DOI: 10.1016/j.fct.2023.113664] [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: 05/28/2022] [Revised: 01/15/2023] [Accepted: 02/09/2023] [Indexed: 02/12/2023]
Abstract
Per- and polyfluoroalkyl substances (PFASs) are a family of highly fluorinated aliphatic substances widely used in industrial and commercial applications. This study aims to determine the inhibition of PFASs towards sulfotransferases (SULTs) activity, and trying to explain the toxicity mechanism of PFASs. In vitro recombinant SULTs-catalyzed sulfation of p-nitrophenol (PNP) was utilized as a probe reaction. The incubation system was consisted of PFASs, SULTs, PNP, 3'-phosphoadenosine-5'-phosphosulfate, MgCl2 and Tris-HCl buffer. Ultra-performance liquid chromatography was employed for analysis of the metabolites. All tested PFASs showed inhibition towards SULTs. The longer the carbon chain length of the PFASs terminated with -COOH, the higher is its capability of inhibiting SULT1A3. PFASs with -SO3H had a relatively higher ability to inhibit SULT1A3 activity than those with -COOH, -I and -OH. The inhibition kinetic parameter was 2.16 and 1.42 μM for PFOS-SULT1A1, PFTA-SULT1B1. In vitro in vivo extrapolation showed that the concentration of PFOS and PFTA in human matrices might be higher than the threshold for inducing inhibition of SULTs. Therefore, PFASs could interfere with the metabolic pathways catalyzed by SULTs in vivo. All these results will help to understand the toxicity of PFASs from the perspective of metabolism.
Collapse
Affiliation(s)
- Yong-Zhe Liu
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, 300070, China; Hebei Key Laboratory of Environment and Human Health, Shijiazhuang, Hebei, 050000, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China; National Demonstration Center for Experimental Preventive Medicine Education, Tianjin Medical University, Tianjin, 300070, China; Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin, 300070, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institute, Hefei, 230032, China
| | - Kai Yang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, 300070, China
| | - Wei Zhang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, 300070, China
| | - Qian Zhang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, 300070, China; Baoding First Central Hospital, Baoding, 071000, China
| | - Tong-Feng Liu
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, 300070, China
| | - Tong Xu
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, 300070, China
| | - Yang Li
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, 300070, China
| | - Rui-Xue Ran
- Tianjin Key Laboratory of Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin, 300070, China
| | - Kun Yang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China; National Demonstration Center for Experimental Preventive Medicine Education, Tianjin Medical University, Tianjin, 300070, China; Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin, 300070, China
| | - Yun-Feng Cao
- Shanghai Institute for Biomedical and Pharmaceutical Technologies, NHC Key Laboratory of Reproduction Regulation, ShangHai, 200032, China.
| | - Zhong-Ze Fang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, 300070, China; Hebei Key Laboratory of Environment and Human Health, Shijiazhuang, Hebei, 050000, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300070, China; National Demonstration Center for Experimental Preventive Medicine Education, Tianjin Medical University, Tianjin, 300070, China; Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin, 300070, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institute, Hefei, 230032, China.
| |
Collapse
|
2
|
Lessigiarska I, Peng Y, Tsakovska I, Alov P, Lagarde N, Jereva D, Villoutreix BO, Nicot AB, Pajeva I, Pencheva T, Miteva MA. Computational Analysis of Chemical Space of Natural Compounds Interacting with Sulfotransferases. Molecules 2021; 26:molecules26216360. [PMID: 34770768 PMCID: PMC8588419 DOI: 10.3390/molecules26216360] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 10/14/2021] [Accepted: 10/15/2021] [Indexed: 01/04/2023] Open
Abstract
The aim of this study was to investigate the chemical space and interactions of natural compounds with sulfotransferases (SULTs) using ligand- and structure-based in silico methods. An in-house library of natural ligands (hormones, neurotransmitters, plant-derived compounds and their metabolites) reported to interact with SULTs was created. Their chemical structures and properties were compared to those of compounds of non-natural (synthetic) origin, known to interact with SULTs. The natural ligands interacting with SULTs were further compared to other natural products for which interactions with SULTs were not known. Various descriptors of the molecular structures were calculated and analyzed. Statistical methods (ANOVA, PCA, and clustering) were used to explore the chemical space of the studied compounds. Similarity search between the compounds in the different groups was performed with the ROCS software. The interactions with SULTs were additionally analyzed by docking into different experimental and modeled conformations of SULT1A1. Natural products with potentially strong interactions with SULTs were outlined. Our results contribute to a better understanding of chemical space and interactions of natural compounds with SULT enzymes and help to outline new potential ligands of these enzymes.
Collapse
Affiliation(s)
- Iglika Lessigiarska
- Department of QSAR and Molecular Modelling, Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (I.L.); (I.T.); (P.A.); (D.J.); (I.P.)
| | - Yunhui Peng
- INSERM U1268 “Medicinal Chemistry and Translational Research”, CiTCoM UMR 8038 CNRS—Université de Paris, 75006 Paris, France;
- Department of Physics and Astronomy, Clemson University, Clemson, SC 29634, USA
| | - Ivanka Tsakovska
- Department of QSAR and Molecular Modelling, Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (I.L.); (I.T.); (P.A.); (D.J.); (I.P.)
| | - Petko Alov
- Department of QSAR and Molecular Modelling, Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (I.L.); (I.T.); (P.A.); (D.J.); (I.P.)
| | - Nathalie Lagarde
- Laboratoire GBCM, EA7528, Conservatoire National des Arts et Métiers, 2 Rue Conté, Hésam Université, 75003 Paris, France;
| | - Dessislava Jereva
- Department of QSAR and Molecular Modelling, Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (I.L.); (I.T.); (P.A.); (D.J.); (I.P.)
| | | | - Arnaud B. Nicot
- INSERM, Nantes Université, Center for Research in Transplantation and Translational Immunology, UMR 1064, ITUN, F-44000 Nantes, France;
| | - Ilza Pajeva
- Department of QSAR and Molecular Modelling, Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (I.L.); (I.T.); (P.A.); (D.J.); (I.P.)
| | - Tania Pencheva
- Department of QSAR and Molecular Modelling, Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (I.L.); (I.T.); (P.A.); (D.J.); (I.P.)
- Correspondence: (T.P.); (M.A.M.)
| | - Maria A. Miteva
- INSERM U1268 “Medicinal Chemistry and Translational Research”, CiTCoM UMR 8038 CNRS—Université de Paris, 75006 Paris, France;
- Correspondence: (T.P.); (M.A.M.)
| |
Collapse
|
3
|
Tanwar AK, Dhiman N, Kumar A, Jaitak V. Engagement of phytoestrogens in breast cancer suppression: Structural classification and mechanistic approach. Eur J Med Chem 2020; 213:113037. [PMID: 33257172 DOI: 10.1016/j.ejmech.2020.113037] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 11/15/2020] [Accepted: 11/15/2020] [Indexed: 12/12/2022]
Abstract
Cancer is the world's devastating disease, and breast cancer is the most common reason for the death of women worldwide. Many synthetic drugs and medications are provided with their beneficial actions, but all of these have side effects and resistance problems. Natural remedies are coming forward to overcome the disadvantages of synthetic drugs. Among the natural categories, phytoestrogens having a structural similarity of mammalian oestradiol proves its benefit with various mechanisms not only in the treatment of breast cancer but even to prevent the occurrence of postmenopausal symptoms. Phytoestrogens are plant-derived compounds that were utilized in ancient medications and traditional knowledge for its sex hormone properties. Phytoestrogens exert pleiotropic effects on cellular signalling and show effects on estrogen-dependent diseases. However, because of activation/inhibition of steroid hormonal receptor ER-α or ER-β, these compounds induce or inhibit steroid hormonal (estrogen) action and, therefore, have the potential to disrupt hormone (estrogen) signalling pathway. In this review, we have discussed and summarize the effect of certain phytoestrogens and their possible mechanisms that can substantiate advantageous benefits for the treatment of post-menopausal symptoms as well as for breast cancer.
Collapse
Affiliation(s)
- Ankur Kumar Tanwar
- Laboratory of Natural Products, Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda, Punjab, 151001, India
| | - Neha Dhiman
- Laboratory of Natural Products, Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda, Punjab, 151001, India
| | - Amit Kumar
- Laboratory of Natural Products, Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda, Punjab, 151001, India
| | - Vikas Jaitak
- Laboratory of Natural Products, Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab, Bathinda, Punjab, 151001, India.
| |
Collapse
|
4
|
Poschner S, Maier-Salamon A, Thalhammer T, Jäger W. Resveratrol and other dietary polyphenols are inhibitors of estrogen metabolism in human breast cancer cells. J Steroid Biochem Mol Biol 2019; 190:11-18. [PMID: 30851384 DOI: 10.1016/j.jsbmb.2019.03.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 02/26/2019] [Accepted: 03/01/2019] [Indexed: 01/09/2023]
Abstract
Polyphenols in foods and dietary supplements are commonly used for the prevention and treatment of a variety of malignancies, including breast cancer. However, daily intake by patients with breast cancer is controversial, as these compounds may stimulate cancer growth. Estrogens serve key roles in breast cancer cell proliferation; therefore, understanding the interaction between endogenous steroid hormones and natural dietary polyphenols is essential. Currently, comprehensive knowledge regarding these effects remains limited. The current review summarizes the dose-dependent in vitro and in vivo interactions of resveratrol and other dietary polyphenols with estrogen precursors, active estrogens, catechol estrogens and their respective glucuronidated, sulfated, glutathionated or O-methylated metabolites in estrogen receptor alpha negative (ERα-) and positive (ERα+) breast cancer. Which estrogen-metabolizing enzymes are affected by polyphenols is also reviewed in detail. Furthermore, the impacts of dose and therapy duration on disease development and progression in patients with breast cancer are discussed. The present article is part of a Special Issue titled 'CSR 2018'.
Collapse
Affiliation(s)
- Stefan Poschner
- Department of Pharmaceutical Chemistry, Division of Clinical Pharmacy and Diagnostics, University of Vienna, 1090 Vienna, Austria
| | - Alexandra Maier-Salamon
- Department of Pharmaceutical Chemistry, Division of Clinical Pharmacy and Diagnostics, University of Vienna, 1090 Vienna, Austria
| | - Theresia Thalhammer
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Austria
| | - Walter Jäger
- Department of Pharmaceutical Chemistry, Division of Clinical Pharmacy and Diagnostics, University of Vienna, 1090 Vienna, Austria; Vienna Metabolomics Center (VIME), University of Vienna, Austria.
| |
Collapse
|
5
|
Balyan R, Cai M, Zhao W, Dai Z, Zhai Y, Chen G. Repeated restraint stress upregulates rat sulfotransferase 1A1. J Basic Clin Physiol Pharmacol 2018; 30:265-273. [PMID: 30864418 DOI: 10.1515/jbcpp-2016-0038] [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: 03/19/2016] [Accepted: 11/15/2018] [Indexed: 11/15/2022]
Abstract
BackgroundSulfotransferases (SULTs) are phase II drug-metabolizing enzymes. SULTs also regulate the biological activities of biological signaling molecules, such as various hormones, bile acids, and monoamine neurotransmitters; therefore, they play critical roles in the endocrine and nervous systems. People are subject to various kinds of physical, chemical, toxicological, physiological, and psychological stresses at one time or another. The study of the effects produced by stress may lead to finding novel remedies for many disease conditions. The effect of repeated restraint stress on rat SULT expression has not been studied. MethodsThis study involves the effect of repeated restraint stress on SULT1A1 expressions. Male Sprague-Dawley rats (n=4) were subjected to repeated restraint stress 2 h/day for 7 days. Protein and RNA expression of SULT1A1 were analyzed by western blot and quantitative real time reverse transcription polymerase chain reaction, respectively, in important tissues. ResultsWe observed that repeated restraint stress increased the expression of SULT1A1 in the liver, adrenal glands, cerebellum, hypothalamus, and cerebral cortex in male rats. Patterns of enhanced expression were observed at both mRNA and protein level, indicating that repeated restraint stress stimulates enzyme expression at the transcriptional level. ConclusionsChanges of SULT1A1 expression in important tissues caused by repeated restraint stress will have a significant effect on drug metabolism and xenobiotics detoxification. The significant changes in endocrine glands and brain sections may also cause disturbances in hormone homeostasis, therefore leading to disease conditions. This report provides clues for the understanding of the effect of stresses on health.
Collapse
Affiliation(s)
- Rajiv Balyan
- Department of Physiological Sciences, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK, USA
| | - Ma Cai
- College of Life Science, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong Province, China
| | - Wenhong Zhao
- College of Light Industry and Food Science, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong Province, China
| | - Zhao Dai
- School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin, China
| | - Yujia Zhai
- Department of Anesthesiology, The Third Affiliated Hospital, Shenzhen University, Shenzhen, China
| | - Guangping Chen
- Department of Physiological Sciences, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK 74074, USA, Phone: +405-744-2349
| |
Collapse
|
6
|
Poschner S, Maier-Salamon A, Zehl M, Wackerlig J, Dobusch D, Meshcheryakova A, Mechtcheriakova D, Thalhammer T, Pachmann B, Jäger W. Resveratrol Inhibits Key Steps of Steroid Metabolism in a Human Estrogen-Receptor Positive Breast Cancer Model: Impact on Cellular Proliferation. Front Pharmacol 2018; 9:742. [PMID: 30042681 PMCID: PMC6048268 DOI: 10.3389/fphar.2018.00742] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 06/19/2018] [Indexed: 12/12/2022] Open
Abstract
The role of resveratrol (RES) in preventing breast cancer is controversial, as low concentrations may stimulate the proliferation of estrogen-receptor alpha positive (ERα+) breast cancer cells. As metabolism is the key factor in altering cellular estrogens, thereby influencing breast tumor growth, we investigated the effects of RES on the formation of estrogen metabolites, namely 4-androstene-3,17-dione (AD), dehydroepiandrosterone (DHEA), dehydroepiandrosterone-3-O-sulfate (DHEA-S), estrone (E1), estrone-3-sulfate (E1-S), 17β-estradiol (E2), 17β-estradiol-3-O-(β-D-glucuronide) (E2-G), 17β-estradiol-3-O-sulfate (E2-S), 16α-hydroxy-17β-estradiol (estriol, E3), and testosterone (T) in ERα- MDA-MB-231 and ERα+ MCF-7 cells. Incubation of both of the cell lines with the hormone precursors DHEA and E1 revealed that sulfation and glucuronidation were preferred metabolic pathways for DHEA, E1 and E2 in MCF-7 cells, compared with in MDA-MB-231 cells, as the Vmax values were significantly higher (DHEA-S: 2873.0 ± 327.4 fmol/106 cells/h, E1-S: 30.4 ± 2.5 fmol/106 cells/h, E2-S: 24.7 ± 4.9 fmol/106 cells/h, E2-G: 7.29 ± 1.36 fmol/106 cells/h). RES therefore significantly inhibited DHEA-S, E1-S, E2-S and E2-G formation in MCF-7, but not in MDA-MB-231 cells (Kis: E2-S, 0.73 ± 0.07 μM < E1-S, 0.94 ± 0.03 μM < E2-G, 7.92 ± 0.24 μM < DHEA-S, 13.2 ± 0.2 μM). Suppression of these metabolites subsequently revealed twofold higher levels of active E2, concomitant with an almost twofold increase in MCF-7 cell proliferation, which was the most pronounced upon the addition of 5 μM RES. As the content of RES in food is relatively low, an increased risk of breast cancer progression in women is likely to only be observed following the continuous consumption of high-dose RES supplements. Further long-term human studies simultaneously monitoring free estrogens and their conjugates are therefore highly warranted to evaluate the efficacy and safety of RES supplementation, particularly in patients diagnosed with ERα+ breast cancer.
Collapse
Affiliation(s)
- Stefan Poschner
- Division of Clinical Pharmacy and Diagnostics, Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Alexandra Maier-Salamon
- Division of Clinical Pharmacy and Diagnostics, Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Martin Zehl
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Judith Wackerlig
- Division of Drug Design and Medicinal Chemistry, Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Daniel Dobusch
- Division of Drug Design and Medicinal Chemistry, Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Anastasia Meshcheryakova
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Diana Mechtcheriakova
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Theresia Thalhammer
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Bettina Pachmann
- Division of Clinical Pharmacy and Diagnostics, Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Walter Jäger
- Division of Clinical Pharmacy and Diagnostics, Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria.,Vienna Metabolomics Center, University of Vienna, Vienna, Austria
| |
Collapse
|
7
|
Gallo C, Nuzzo G, d'Ippolito G, Manzo E, Sardo A, Fontana A. Sterol Sulfates and Sulfotransferases in Marine Diatoms. Methods Enzymol 2018; 605:101-138. [PMID: 29909823 DOI: 10.1016/bs.mie.2018.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Sterol sulfates are widely occurring molecules in marine organisms. Their importance has been so far underestimated although many of these compounds are crucial mediators of physiological and ecological functions in other organisms. Biosynthesis of sterol sulfates is controlled by cytosolic sulfotransferases (SULTs), a varied family of enzymes that catalyze the transfer of a sulfo residue (-SO3H) from the universal donor 3'-phosphoadenosine-5'-phosphosulfate to the hydroxyl function at C-3 of the steroid skeleton. The absence of molecular tools has been the main impediment to the development of a biosynthetic study of this class of compounds in marine organisms. In fact, there is very limited information about these enzymes in marine environments. SULT activity has, however, been reported in several marine species, and, recently, the production of sterol sulfates has been linked to the control of growth in marine diatoms. In this chapter, we describe methods for the study of sterol sulfates in this lineage of marine microalgae. The main aim is to provide the tools useful to deal with the biosynthesis and regulation of these compounds and to circumvent the bottleneck of the lack of molecular information. The protocols have been designed for marine diatoms, but most of the procedures can be used for other marine organisms.
Collapse
Affiliation(s)
- Carmela Gallo
- National Research Council of Italy, Institute of Biomolecular Chemistry, Pozzuoli, Naples, Italy
| | - Genoveffa Nuzzo
- National Research Council of Italy, Institute of Biomolecular Chemistry, Pozzuoli, Naples, Italy
| | - Giuliana d'Ippolito
- National Research Council of Italy, Institute of Biomolecular Chemistry, Pozzuoli, Naples, Italy.
| | - Emiliano Manzo
- National Research Council of Italy, Institute of Biomolecular Chemistry, Pozzuoli, Naples, Italy
| | - Angela Sardo
- National Research Council of Italy, Institute of Biomolecular Chemistry, Pozzuoli, Naples, Italy
| | - Angelo Fontana
- National Research Council of Italy, Institute of Biomolecular Chemistry, Pozzuoli, Naples, Italy.
| |
Collapse
|
8
|
Poschner S, Maier-Salamon A, Zehl M, Wackerlig J, Dobusch D, Pachmann B, Sterlini KL, Jäger W. The Impacts of Genistein and Daidzein on Estrogen Conjugations in Human Breast Cancer Cells: A Targeted Metabolomics Approach. Front Pharmacol 2017; 8:699. [PMID: 29051735 PMCID: PMC5633874 DOI: 10.3389/fphar.2017.00699] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 09/19/2017] [Indexed: 11/24/2022] Open
Abstract
The beneficial effect of dietary soy food intake, especially for women diagnosed with breast cancer, is controversial, as in vitro data has shown that the soy isoflavones genistein and daidzein may even stimulate the proliferation of estrogen-receptor alpha positive (ERα+) breast cancer cells at low concentrations. As genistein and daidzein are known to inhibit key enzymes in the steroid metabolism pathway, and thus may influence levels of active estrogens, we investigated the impacts of genistein and daidzein on the formation of estrogen metabolites, namely 17β-estradiol (E2), 17β-estradiol-3-(β-D-glucuronide) (E2-G), 17β-estradiol-3-sulfate (E2-S) and estrone-3-sulfate (E1-S) in estrogen-dependent ERα+ MCF-7 cells. We found that both isoflavones were potent inhibitors of E1 and E2 sulfation (85–95% inhibition at 10 μM), but impeded E2 glucuronidation to a lesser extent (55–60% inhibition at 10 μM). The stronger inhibition of E1 and E2 sulfation compared with E2 glucuronidation was more evident for genistein, as indicated by significantly lower inhibition constants for genistein [Kis: E2-S (0.32 μM) < E1-S (0.76 μM) < E2-G (6.01 μM)] when compared with those for daidzein [Kis: E2-S (0.48 μM) < E1-S (1.64 μM) < E2-G (7.31 μM)]. Concomitant with the suppression of E1 and E2 conjugation, we observed a minor but statistically significant increase in E2 concentration of approximately 20%. As the content of genistein and daidzein in soy food is relatively low, an increased risk of breast cancer development and progression in women may only be observed following consumption of high-dose isoflavone supplements. Further long-term human studies monitoring free estrogens and their conjugates are therefore highly warranted to evaluate the potential side effects of high-dose genistein and daidzein, especially in patients diagnosed with ERα+ breast cancer.
Collapse
Affiliation(s)
- Stefan Poschner
- Division of Clinical Pharmacy and Diagnostics, Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Alexandra Maier-Salamon
- Division of Clinical Pharmacy and Diagnostics, Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Martin Zehl
- Department of Analytical Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Judith Wackerlig
- Division of Drug Design and Medicinal Chemistry, Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Daniel Dobusch
- Division of Drug Design and Medicinal Chemistry, Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Bettina Pachmann
- Division of Clinical Pharmacy and Diagnostics, Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Konstantin L Sterlini
- Division of Clinical Pharmacy and Diagnostics, Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria
| | - Walter Jäger
- Division of Clinical Pharmacy and Diagnostics, Department of Pharmaceutical Chemistry, University of Vienna, Vienna, Austria.,Vienna Metabolomics Center (VIME), University of Vienna, Vienna, Austria
| |
Collapse
|
9
|
Ambadapadi S, Wang PL, Palii SP, James MO. Celecoxib affects estrogen sulfonation catalyzed by several human hepatic sulfotransferases, but does not stimulate 17-sulfonation in rat liver. J Steroid Biochem Mol Biol 2017; 172:46-54. [PMID: 28552400 PMCID: PMC5554727 DOI: 10.1016/j.jsbmb.2017.05.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 05/14/2017] [Accepted: 05/23/2017] [Indexed: 11/22/2022]
Abstract
Celecoxib is known to alter the preferred position of SULT2A1-catalyzed sulfonation of 17β-estradiol (17β-E2) and other estrogens from the 3- to the 17-position. Understanding the effects of celecoxib on estrogen sulfonation is of interest in the context of the investigational use of celecoxib to treat breast cancer. This study examined the effects on celecoxib on cytosolic sulfotransferases in human and rat liver and on SULT enzymes known to be expressed in liver. Celecoxib's effects on the sulfonation of several steroids catalyzed by human liver cytosol were similar but not identical to those observed previously for SULT2A1. Celecoxib was shown to inhibit recombinant SULT1A1-catalyzed sulfonation of 10nM estrone and 4μM p-nitrophenol with IC50 values of 2.6 and 2.1μM, respectively, but did not inhibit SULT1E1-catalyzed estrone sulfonation. In human liver cytosol, the combined effect of celecoxib and known SULT1A1 and 1E1 inhibitors, quercetin and triclosan, resulted in inhibition of 17β-E2-3-sulfonation such that the 17-sulfate became the major metabolite: this is of interest because the 17-sulfate is not readily hydrolyzed by steroid sulfatase to 17β-E2. Investigation of hepatic cytosolic steroid sulfonation in rat revealed that celecoxib did not stimulate 17β-E2 17-sulfonation in male or female rat liver as it does with human SULT2A1 and human liver cytosol, demonstrating that rat is not a useful model of this effect. In silico studies suggested that the presence of the bulky tryptophan residue in the substrate-binding site of the rat SULT2A homolog instead of glycine as in human SULT2A1 may explain this species difference.
Collapse
Affiliation(s)
- Sriram Ambadapadi
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL 32610-0485, USA
| | - Peter L Wang
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL 32610-0485, USA
| | - Sergiu P Palii
- Biomedical Mass Spectrometry Laboratory, Clinical Research Center, University of Florida, Gainesville, FL 32610-0322, USA
| | - Margaret O James
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL 32610-0485, USA.
| |
Collapse
|
10
|
Bansal S, Lau AJ. Human liver cytosolic sulfotransferase 2A1-dependent dehydroepiandrosterone sulfation assay by ultra-high performance liquid chromatography–tandem mass spectrometry. J Pharm Biomed Anal 2016; 120:261-9. [DOI: 10.1016/j.jpba.2015.12.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 12/03/2015] [Accepted: 12/17/2015] [Indexed: 01/23/2023]
|
11
|
Taneja I, Raju KSR, Wahajuddin M. Dietary Isoflavones as Modulators of Drug Metabolizing Enzymes and Transporters: Effect on Prescription Medicines. Crit Rev Food Sci Nutr 2015; 56 Suppl 1:S95-S109. [DOI: 10.1080/10408398.2015.1045968] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
12
|
No effect on pharmacokinetics of tamoxifen and 4-hydroxytamoxifen by multiple doses of red clover capsule in rats. Sci Rep 2015; 5:16126. [PMID: 26530625 PMCID: PMC4632083 DOI: 10.1038/srep16126] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 10/02/2015] [Indexed: 11/08/2022] Open
Abstract
Tamoxifen is used in clinical practice for breast cancer patients and to prevent osteoporosis. Red clover (Trifolium pratense) preparations are consumed worldwide as dietary supplements for relieving postmenopausal symptoms. In the present study we investigated the possible herb-drug interaction between red clover and tamoxifen in rats. 15 days pre-treatment with red clover did not alter the tamoxifen and its active metabolite 4-hydroxytamoxifen pharmacokinetics significantly (p > 0.05). Therefore the therapeutic efficacy of the tamoxifen may not be compromised by the co-administration with red clover. Tamoxifen metabolism is primarily mediated by CYP2D6, CYP3A4 with minor contribution from CYP2C9, CYP2E1 and CYP1A2 isoforms. Although, red clover pre-treatment significantly (p < 0.05) decreased the mRNA expression and activity of CYP3a2, no effect on CYP2d4 and increased expression and activity of CYP2c11 could be the plausible reasons for lack of effect on tamoxifen and its metabolite pharmacokinetics in rats. CYP1a1 and CYP2b2 mRNA expression and activity were also significantly reduced by red clover. To extend the clinical utility of the present study, effect of red clover extract on major CYPs using human liver microsomes and HepG2 cell lines were also determined. Similar finding were observed in the human liver preparations as in rats.
Collapse
|
13
|
Boušová I, Skálová L, Souček P, Matoušková P. The modulation of carbonyl reductase 1 by polyphenols. Drug Metab Rev 2015; 47:520-33. [DOI: 10.3109/03602532.2015.1089885] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
14
|
Wein SA, Laviano A, Wolffram S. Quercetin induces hepatic γ-glutamyl hydrolase expression in rats by suppressing hepatic microRNA rno-miR-125b-3p. J Nutr Biochem 2015; 26:1660-3. [PMID: 26432773 DOI: 10.1016/j.jnutbio.2015.08.010] [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: 04/09/2015] [Revised: 08/05/2015] [Accepted: 08/06/2015] [Indexed: 12/17/2022]
Abstract
Exogenous factors such as food components including the flavonoid quercetin are suspected to influence micro RNA (miRNA) concentrations and thus possibly target enzymes involved in xenobiotic metabolism. This study therefore investigates the influence of orally administered quercetin on hepatic miRNA and the identification of enzyme target mRNAs relevant in drug metabolism. Male Wistar rats (n=16) were fed either a diet without (C) or with (Q) the addition of 100-ppm quercetin for 7 weeks and subsequently euthanized at the end of the dark phase. To avoid strong effects of food deprivation on hepatic metabolism, food was not removed until 5 h prior to the procedure. Liver was immediately dissected and snap-frozen in liquid nitrogen. Concentrations of 352 hepatic miRNA were measured in pool samples of each dietary group (n=8) using the RT(2) miRNA PCR Array System. Differential expression of miRNAs was assumed with fold changes ≥3. Target genes of differentially expressed miRNAs were identified using the database TargetScan. Because rno-miR-125b-3p showed the most prominent fold-change (-9) we further analyzed the expression of its top predicted target gene gamma-glutamyl hydrolase (GGH) by quantitative real-time PCR using hypoxanthine phosphoribosyltransferase 1 (hprt1) as endogenous control. Compared to controls, 23 miRNAs were differentially expressed in rats fed quercetin. A ninefold reduction in hepatic miRNA rno-miR-125b-3p was paralleled by significant induction of GGH mRNA in liver of quercetin fed rats. Because increased GGH expressions were repeatedly associated with resistance to methotrexate, concomitant intake with quercetin should be monitored carefully.
Collapse
Affiliation(s)
- Silvia Anette Wein
- Institute of Animal Nutrition & Physiology, Christian-Albrechts-University of Kiel, Hermann-Rodewald-Str. 9, 24118 Kiel, Germany.
| | - Alessandro Laviano
- Department of Clinical Medicine, Sapienza University, Viale del Policlinico 155, 00161 Rome, Italy.
| | - Siegfried Wolffram
- Institute of Animal Nutrition & Physiology, Christian-Albrechts-University of Kiel, Hermann-Rodewald-Str. 9, 24118 Kiel, Germany.
| |
Collapse
|
15
|
Balyan R, Kudugunti SK, Hamad HA, Yousef MS, Moridani MY. Bioactivation of luteolin by tyrosinase selectively inhibits glutathione S-transferase. Chem Biol Interact 2015; 240:208-18. [PMID: 26279214 DOI: 10.1016/j.cbi.2015.08.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 07/07/2015] [Accepted: 08/11/2015] [Indexed: 12/27/2022]
Abstract
Glutathione S-transferase (GST) plays a significant role in the metabolism and detoxification of drugs used in treatment of melanoma, resulting in a decrease in drug efficacy. Tyrosinase is an abundant enzyme found in melanoma. In this study, we used a tyrosinase targeted approach to selectively inhibit GST. In the presence of tyrosinase, luteolin (10 μM) showed 87% GST inhibition; whereas in the absence of tyrosinase, luteolin led to negligible GST inhibition. With respect to GSH, both luteolin-SG conjugate and luteolin-quinone inhibited ≥90% of GST activity via competitive reversible and irreversible mixed mechanisms with Ki of 0.74 μM and 0.02 μM, respectively. With respect to CDNB, the luteolin-SG conjugate inhibited GST activity via competitive reversible mechanism and competitively with Ki of 0.58 μM, whereas luteolin-quinone showed irreversible mixed inhibition of GST activity with Ki of 0.039 μM. Luteolin (100 μM) inhibited GST in mixed manner with Ki of 53 μM with respect to GSH and non-competitively with respect to CDNB with Ki of 38 μM. Luteolin, at a concentration range of 5-80 μM, exhibited 78-99% GST inhibition in human SK-MEL-28 cell homogenate. Among the 3 species of intact luteolin, luteolin-SG conjugate, and luteoline-quinone, only the latter two have potential as drugs with Ki < 1 μM, which is potentially achievable in-vivo as therapeutic agents. The order of GST inhibition was luteolin-quinone >> luteolin-SG conjugate >>> luteolin. In summary, our results suggest that luteolin was bioactivated by tyrosinase to form a luteolin-quinone and luteolin-glutathione conjugate, which inhibited GST. For the first time, in addition to intracellular GSH depletion, we demonstrate that luteolin acts as a selective inhibitor of GST in the presence of tyrosinase. Such strategy could potentially be used to selectively inhibit GST, a drug detoxifying enzyme, in melanoma cells.
Collapse
Affiliation(s)
- Rajiv Balyan
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA
| | - Shashi K Kudugunti
- Repligen Corporation, 41 Seyon St, Bldg 1, Suite 100, Waltham, MA 02453, USA
| | - Hamzah A Hamad
- Department of Physics, College of Arts & Sciences, Southern Illinois University, Edwardsville, IL 62025, USA
| | - Mohammad S Yousef
- Department of Physics, College of Arts & Sciences, Southern Illinois University, Edwardsville, IL 62025, USA; Biophysics Department, Faculty of Science, Cairo University, Egypt
| | - Majid Y Moridani
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA; Clinical Chemistry and Toxicology, Department of Pathology, Medical College of Wisconsin, 9200 W. Wisconsin Avenue, Milwaukee, WI 5322, USA.
| |
Collapse
|
16
|
James MO, Ambadapadi S. Interactions of cytosolic sulfotransferases with xenobiotics. Drug Metab Rev 2014; 45:401-14. [PMID: 24188364 DOI: 10.3109/03602532.2013.835613] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Cytosolic sulfotransferases are a superfamily of enzymes that catalyze the transfer of the sulfonic group from 3'-phosphoadenosine-5'-phosphosulfate to hydroxy or amine groups in substrate molecules. The human cytosolic sulfotransferases that have been most studied, namely SULT1A1, SULT1A3, SULT1B1, SULT1E1 and SULT2A1, are expressed in different tissues of the body, including liver, intestine, adrenal, brain and skin. These sulfotransferases play important roles in the sulfonation of endogenous molecules such as steroid hormones and neurotransmitters, and in the elimination of xenobiotic molecules such as drugs, environmental chemicals and natural products. There is often overlapping substrate selectivity among the sulfotransferases, although one isoform may exhibit greater enzyme efficiency than other isoforms. Similarly, inhibitors or enhancers of one isoform often affect other isoforms, but typically with different potency. This means that if the activity of one form of sulfotransferase is altered (either inhibited or enhanced) by the presence of a xenobiotic, the sulfonation of endogenous and xenobiotic substrates for other isoforms may well be affected. There are more examples of inhibitors than enhancers of sulfonation. Modulators of sulfotransferase enzymes include natural products ingested as part of the human diet as well as environmental chemicals and drugs. This review will discuss recent work on such interactions.
Collapse
Affiliation(s)
- Margaret O James
- Department of Medicinal Chemistry, University of Florida, Gainesville , FL , USA
| | | |
Collapse
|
17
|
Boušová I, Skálová L. Inhibition and induction of glutathione S-transferases by flavonoids: possible pharmacological and toxicological consequences. Drug Metab Rev 2012; 44:267-86. [PMID: 22998389 DOI: 10.3109/03602532.2012.713969] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Many studies reviewed herein demonstrated the potency of some flavonoids to modulate the activity and/or expression of glutathione S-transferases (GSTs). Because GSTs play a crucial role in the detoxification of xenobiotics, their inhibition or induction may significantly affect metabolism and biological effects of many drugs, industrials, and environmental contaminants. The effect of flavonoids on GSTs strongly depends on flavonoid structure, concentration, period of administration, as well as on GST isoform and origin. Moreover, the results obtained in vitro are often contrary to the vivo results. Based on these facts, the revelation of important flavonoid-drug or flavonoid-pollutant interaction has been complicated. However, it should be borne in mind that ingestion of certain flavonoids in combination with drugs or pollutants (e.g., acetaminophen, simvastatin, cyclophosphamide, cisplatine, polycyclic aromatic hydrocarbons, chlorpyrifos, acrylamide, and isocyanates), which are GST substrates, could have significant pharmacological and toxicological consequences. Although reasonable consumptions of a flavonoids-rich diet (that may lead to GST induction) are mostly beneficial, the uncontrolled intake of high concentrations of certain flavonoids (e.g., quercetin and catechins) in dietary supplements (that may cause GST inhibition) may threaten human health.
Collapse
Affiliation(s)
- Iva Boušová
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Hradec Králové, Czech Republic, European Union
| | | |
Collapse
|
18
|
Alhusainy W, van den Berg SJPL, Paini A, Campana A, Asselman M, Spenkelink A, Punt A, Scholz G, Schilter B, Adams TB, van Bladeren PJ, Rietjens IMCM. Matrix Modulation of the Bioactivation of Estragole by Constituents of Different Alkenylbenzene-containing Herbs and Spices and Physiologically Based Biokinetic Modeling of Possible In Vivo Effects. Toxicol Sci 2012; 129:174-87. [DOI: 10.1093/toxsci/kfs196] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
19
|
Boušová I, Hájek J, Dršata J, Skálová L. Naturally occurring flavonoids as inhibitors of purified cytosolic glutathione S-transferase. Xenobiotica 2012; 42:872-9. [PMID: 22458346 DOI: 10.3109/00498254.2012.670737] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Flavonoids are known to modulate catalytic activity and expression of various enzymes. Glutathione S-transferases (GSTs) are the important biotransformation enzymes defending cells against potentially toxic xenobiotics. Therefore, the modulation of GST activity may influence detoxification of xenobiotics. The aim of this study was to evaluate the in vitro inhibitory activity of several dietary flavonoids towards purified equine liver cytosolic GST. Pure GST was incubated in the presence or absence of flavonoids (10 nM-100 µM), its activity was assayed using 1-chloro-2,4-dinitrobenzene (CDNB) as a substrate, and half maximal inhibitory concentrations (IC(50)) were determined. The obtained results were confirmed by GST activity staining of native polyacrylamide gel electrophoresis (PAGE) gels. For the most potent inhibitor, the inhibition kinetics study was performed. From 24 flavonoids tested, the most potent GST inhibitor was gallocatechin gallate (IC(50) = 1.26 µM). The inhibition kinetics of this compound followed noncompetitive mechanism versus both glutathione (K(i) = 35.9 µM) and CDNB (K(i) = 34.1 µM). The inhibitory potency of different flavonoids for GST activity depended mainly on the pattern of hydroxylation and number of hydroxyl groups in the ring B. Especially, pyrogallol-type catechins with 3-OH group esterified with gallic acid showed strong potential to inhibit GST in vitro.
Collapse
Affiliation(s)
- Iva Boušová
- Department of Biochemical Sciences, Charles University in Prague, Faculty of Pharmacy, Hradec Králové, Czech Republic
| | | | | | | |
Collapse
|
20
|
Bothe H, Götz C, Stobbe-Maicherski N, Fritsche E, Abel J, Haarmann-Stemmann T. Luteolin enhances the bioavailability of benzo(a)pyrene in human colon carcinoma cells. Arch Biochem Biophys 2010; 498:111-8. [DOI: 10.1016/j.abb.2010.04.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2010] [Revised: 04/13/2010] [Accepted: 04/14/2010] [Indexed: 12/14/2022]
|
21
|
Alhusainy W, Paini A, Punt A, Louisse J, Spenkelink A, Vervoort J, Delatour T, Scholz G, Schilter B, Adams T, van Bladeren P, Rietjens I. Identification of nevadensin as an important herb-based constituent inhibiting estragole bioactivation and physiology-based biokinetic modeling of its possible in vivo effect. Toxicol Appl Pharmacol 2010; 245:179-90. [DOI: 10.1016/j.taap.2010.02.017] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2009] [Revised: 02/17/2010] [Accepted: 02/26/2010] [Indexed: 10/19/2022]
|
22
|
Krämer S, Testa B. The Biochemistry of Drug Metabolism - An Introduction. Chem Biodivers 2009; 6:1477-660, table of contents. [DOI: 10.1002/cbdv.200900233] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
23
|
Huang C, Chen Y, Zhou T, Chen G. Sulfation of dietary flavonoids by human sulfotransferases. Xenobiotica 2009; 39:312-22. [PMID: 19350454 DOI: 10.1080/00498250802714915] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Dietary flavonoids catechin, epicatechin, eriodictyol, and hesperetin were investigated as substrates and inhibitors of human sulfotransferases (hSULTs). Purified recombinant proteins and human intestine cytosol were used as enzyme sources. hSULT1A1 and hSULT1A3 as well as human intestine cytosol can catalyse the sulfation of the investigated flavonoids. Sulfation of catechin, epicatechin, eriodictyol, and hesperetin by recombinant hSULTs showed substrate inhibition at high flavonoid concentrations. Hesperetin and eriodictyol are potent inhibitors of purified hSULT1A1, hSULT1A3, hSULT1E1, and hSULT2A1. Catechin and epicatechin inhibited hSULT1A1 and hSULT1A3, but not hSULT1E1 and hSULT2A1. The sulfation efficacy and potency of inhibition is related to the C-ring structure of flavonoids. These results suggest that dietary flavonoids may regulate human SULT activity and, therefore, affect the regulation of hormones and neurotransmitters, detoxification of drugs, and the bioactivation of pro- carcinogens and pro-mutagens.
Collapse
Affiliation(s)
- C Huang
- Physiological Sciences, Oklahoma State University, Stillwater, OK 74078, USA
| | | | | | | |
Collapse
|
24
|
Chen Y, Huang C, Zhou T, Chen G. Genistein induction of human sulfotransferases in HepG2 and Caco-2 cells. Basic Clin Pharmacol Toxicol 2009; 103:553-9. [PMID: 18715236 DOI: 10.1111/j.1742-7843.2008.00316.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Sulfotransferases are phase II drug-metabolizing enzymes. While the induction of sulfotransferases by hormones and endogenous molecules is relatively well known, induction by xenobiotics is not well studied. Isoflavones are naturally occurring phyto-oestrogens, mainly existing in soy food products. They have been described as health-promoting, disease-preventing dietary supplements and as agents with cancer-preventive activities. Recently, isoflavones have been reported to interact with nuclear receptors, including those that are known to mediate the induction of drug-metabolizing enzymes. In the present investigation, the isoflavone genistein was shown to be a xenobiotic inducer of human sulfotransferases in transformed human liver cells (HepG2) and colon carcinoma cells (Caco-2). Enzymatic activity assay, Western blot, and real-time reverse transcription-polymerase chain reaction (RT-PCR) results demonstrated that genistein significantly induced protein and mRNA expression of human simple phenol sulfotransferase (hSULT1A1) and human dehydroepiandrosterone sulfotransferase (hSULT2A1) in HepG2 and Caco-2 cells. The induction was time-dependent and dose-dependent. Western blot results agreed well with real-time RT-PCR results, suggesting that induction occurred at the gene transcription level. This isoflavone is the first nutritionally related phyto-oestrogen shown to induce human sulfotransferases in HepG2 and Caco-2 cells.
Collapse
Affiliation(s)
- Yue Chen
- Department of Physiological Sciences, Center for Veterinary Health Sciences, Oklahoma State University, Stillwater, OK 74078, USA
| | | | | | | |
Collapse
|
25
|
Abstract
Phytoestrogens are used as 'natural' alternatives to HRT and, although epidemiological evidence implies that diets rich in phytoestrogens reduce the incidence of breast cancer, their weak oestrogenicity is also known to stimulate growth in experimental models of breast cancer. This review addresses the question as to how phytoestrogens may protect against breast cancer through their ability to bind preferentially to oestrogen receptor beta, inhibit enzymes that convert circulating steroid precursors into oestradiol and inhibit cell signalling pathways of growth factors.
Collapse
Affiliation(s)
- Suman Rice
- Division of Basic Medical Sciences, St. George's University of London, Cranmer Terrace, London, United Kingdom
| | | |
Collapse
|
26
|
Meng LH, Shankavaram U, Chen C, Agama K, Fu HQ, Gonzalez FJ, Weinstein J, Pommier Y. Activation of aminoflavone (NSC 686288) by a sulfotransferase is required for the antiproliferative effect of the drug and for induction of histone gamma-H2AX. Cancer Res 2007; 66:9656-64. [PMID: 17018623 DOI: 10.1158/0008-5472.can-06-0796] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Aminoflavone (AF) is entering clinical trials. We recently reported that AF induces DNA-protein cross-links (DPC) and gamma-H2AX in MCF-7 human breast cancer cells. To elucidate the mechanism of action of AF and provide biomarkers indicative of AF activity, we correlated AF activity profile (GI(50)) with gene expression patterns in the NCI-60 cell lines. Sulfotransferases (SULT) showed the highest positive correlation coefficients among approximately 14,000 probe sets analyzed (r = 0.537, P < 0.001). Stable transfection of SULT1A1 into AF-resistant MDA-MB-231 cells sensitized these cells to AF. AF produced DPCs, gamma-H2AX foci, and S-phase arrest in the SULT1A1-transfected but not in the parent MDA-MB-231 cells. Conversely, cells in which SULT1A1 was knocked down by small interfering RNA failed to induce gamma-H2AX. Inhibition of SULTs and cytochrome P450 (CYP) enzymes by natural flavonoids blocked the antiproliferative activity of AF and the formation of AF-DNA adducts. AF also induces SULT1A1 and CYP expression in MCF-7 cells, suggesting the existence of an aryl hydrocarbon receptor-mediated positive feedback for AF activation by CYP and SULT1A1. Metabolism studies showed that AF can be oxidized by CYP at two amino groups to form N-hydroxyl metabolites that are substrates for bioactivation by SULTs. We propose that both N-sulfoxy-groups can be further converted to nitrenium ions that form adducts with DNA and proteins. The results reported here show the importance of SULT1A1 and CYP for AF activation and anticancer activity. They also suggest using SULT1A1 and gamma-H2AX as biomarkers for prediction of AF activity during patient selection and monitoring of clinical trials.
Collapse
Affiliation(s)
- Ling-hua Meng
- Laboratory of Molecular Pharmacology, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD 20892-4255, USA
| | | | | | | | | | | | | | | |
Collapse
|
27
|
Diel P, Hertrampf T, Seibel J, Laudenbach-Leschowsky U, Kolba S, Vollmer G. Combinatorial effects of the phytoestrogen genistein and of estradiol in uterus and liver of female Wistar rats. J Steroid Biochem Mol Biol 2006; 102:60-70. [PMID: 17049845 DOI: 10.1016/j.jsbmb.2006.09.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The knowledge about safety of phytoestrogens on proliferative endpoints in the endometrium is rather limited, particularly when low amounts of estrogens are present like in postmenopausal women. Therefore, we now studied how genistein (GEN) exposure affects proliferative endpoints in the endometrium in estrogenized animals. We investigated the effects of GEN (10 mg/(kgday) BW) on uterine proliferation and on general uterine response markers in intact female rats and ovariectomized (OVX) female rats co-treated with different doses of estradiol (E2; 1 or 4 microg/(kgday) BW). In parallel we investigated generalized hepatic effects of GEN in this co-stimulatory protocol. In agreement to our previous results, GEN treatment of OVX animals for 3 days results in a faint stimulation of the uterine wet weight. In intact animals and in OVX animals co-treated with E2 no effects of GEN on uterine wet weight were detectable. GEN treatment did not affect the uterine epithelial height in intact animals but resulted in a decrease of the protein and mRNA expression of the proliferation marker PCNA. In OVX animals co-treated with E2, GEN antagonized the E2 stimulated increase of the uterine epithelial height and epithelial PCNA expression. Besides PCNA, GEN effects on the uterine mRNA expression of IGF-1, IGF-1R, Complement C3, estrogen receptor-alpha (ERalpha) and -beta (ERbeta), as well as progesterone receptor were investigated in intact and OVX co-treated animals. Overall there was a tendency in all combinatorial groups that GEN counteracts E2 function in uterine tissue. Surprisingly, while investigating estrogenic response markers in liver, we observed very strong effects of GEN on hepatic marker gene expression. GEN significantly down-regulated CaBP9K and IGFBP1 mRNA levels in intact animals. In OVX animals hepatic CABP9K and IGFBP1 mRNA levels were not affected by E2 treatment. GEN treatment, even in combination with E2, decreased the hepatic CaBP9K expression below the levels observed in untreated animals. Interestingly co-treatment of OVX rats with low dose E2 and GEN resulted in a significant increase of IGFBP1 mRNA expression. Summarising our results we conclude that (1) GEN treatment in the presence of E2 is safe regarding proliferative responses in the endometrium of adult animals; (2) the observation of differences of the GEN activity in intact and OVX/E2 substituted animals can be taken as a hint that GEN may interact mechanistically with progestins which has to be proven in detail in future investigations and (3) the detection of strong effects of the phytoestrogen GEN on hepatic gene expression may point to the need of future investigations to rule out the possibility of adverse responses in this organ.
Collapse
Affiliation(s)
- Patrick Diel
- Molekulare und zelluläre Sportmedizin, Institut für Kreislaufforschung und Sportmedizin, DSHS Köln, Carl Diem Weg 6, 50927 Köln, Germany
| | | | | | | | | | | |
Collapse
|
28
|
Nagar S, Walther S, Blanchard RL. Sulfotransferase (SULT) 1A1 Polymorphic Variants *1, *2, and *3 Are Associated with Altered Enzymatic Activity, Cellular Phenotype, and Protein Degradation. Mol Pharmacol 2006; 69:2084-92. [PMID: 16517757 DOI: 10.1124/mol.105.019240] [Citation(s) in RCA: 121] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The superfamily of sulfotransferase (SULT) enzymes catalyzes the sulfate conjugation of several pharmacologically important endo- and xenobiotics. SULT1A1 catalyzes the sulfation of small planar phenols such as neurotransmitters, steroid hormones, acetaminophen, and p-nitrophenol (PNP). Genetic polymorphisms in the human SULT1A1 gene define three alleles, SULT1A1*1, *2, and *3. The enzyme activities of the SULT1A1 allozymes were studied with a variety of substrates, including PNP, 17beta-estradiol, 2-methoxyestradiol, catecholestrogens, the antiestrogen 4-hydroxytamoxifen (OHT), and dietary flavonoids. Using purified recombinant SULT1A1 protein, marked differences in *1, *2, and *3 activity toward every substrate studied were noted. Substrate inhibition was observed for most substrates. In general, the trend in V(max) estimates was *1 > *3 > *2; however, V(max)/K(m) estimate trends varied with substrate. In MCF-7 cells stably expressing either SULT1A1*1 or *2, the antiestrogenic response to OHT was found to be allele-specific: the cells expressing *2 exhibited a better antiproliferative response. The intracellular stability of the *1 and *2 allozymes was examined in insect as well as mammalian cells. The SULT1A1*2 protein had a shorter half-life than the *1 protein. In addition, the *2 protein was ubiquitinated to a greater extent than *1, suggesting increased degradation via a proteasome pathway. The results of this study suggest marked differences in activity of polymorphic SULT1A1 variants, including SULT1A1*3, toward a variety of substrates. These differences are potentially critical for understanding interindividual variability in drug response and toxicity, as well as cancer risk and incidence.
Collapse
Affiliation(s)
- Swati Nagar
- Fox Chase Cancer Center, Philadelphia, PA, USA
| | | | | |
Collapse
|
29
|
Abstract
Sulfonation has a major function in modulating the biological activities of a wide number of endogenous and foreign chemicals, including: drugs, toxic chemicals, hormones, and neurotransmitters. The activation as well as inactivation of many xenobiotics and endogenous compounds occurs via sulfonation. The process is catalyzed by members of the cytosolic sulfotransferase (SULT) superfamily consisting of at least ten functional genes in humans. The reaction in intact cells may be reversed by arylsulafatase present in the endoplasmic reticulum. Under physiological conditions, sulfonation is regulated, in part, by the supply of the co-substrate/donor molecule 3'-phosphadensoine-5-phosphosulfate (PAPS), and transport mechanisms by which sulfonated conjugates enter and leave cells. Variation in the response of individuals to certain drugs and toxic chemicals may be related to genetic polymorphisms documented to occur in each of the above pathways. Sulfonation has a major function in regulating the endocrine status of an individual by modulating the receptor activity of estrogens and androgens, steroid biosynthesis, and the metabolism of catecholamines and iodothyronines Sulfonation is a key reaction in the body's defense against injurious chemicals and may have a major function during early development since SULTs are highly expressed in the human fetus. As with many Phase I and Phase II reactions, sulfonation may also serve as the terminal step in activating certain dietary and environmental agents to very reactive toxic intermediates implicated in carcinogenesis.
Collapse
Affiliation(s)
- Frederick C Kauffman
- Laboratory for Cellular and Biochemical Toxicology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA.
| |
Collapse
|
30
|
Gong H, Sinz MW, Feng Y, Chen T, Venkataramanan R, Xie W. Animal models of xenobiotic receptors in drug metabolism and diseases. Methods Enzymol 2005; 400:598-618. [PMID: 16399373 DOI: 10.1016/s0076-6879(05)00034-0] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Drug-metabolizing enzymes, including phase II conjugating enzymes, play an important role in both drug metabolism and human diseases. The genes that encode these enzymes and transporters are inducible by numerous xenobiotics and endobiotics and the inducibility shows clear species specificity. In the past several years, orphan nuclear receptors, such as PXR and CAR, have been established as species-specific "xenobiotic receptors" that regulate the expression of phase I and phase II enzymes and drug transporters. The creation of xenobiotic receptor transgenic and knockout mice has not only provided an opportunity to dissect the transcriptional control of drug metabolizing enzymes, but also offered a unique opportunity to study the xenobiotic receptor-mediated enzyme regulation in both drug metabolism and diseases. "Humanized" hPXR transgenic mice represent a major step forward in the creation and utilization of humanized rodent models for toxicological assessment that may aid in the development of safer drugs.
Collapse
Affiliation(s)
- Haibiao Gong
- Center for Pharmacogenetics, University of Pittsburgh, Pennsylvania, USA
| | | | | | | | | | | |
Collapse
|