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Nagaoka M, Sakai Y, Nakajima M, Fukami T. Role of carboxylesterase and arylacetamide deacetylase in drug metabolism, physiology, and pathology. Biochem Pharmacol 2024; 223:116128. [PMID: 38492781 DOI: 10.1016/j.bcp.2024.116128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 01/20/2024] [Accepted: 03/12/2024] [Indexed: 03/18/2024]
Abstract
Carboxylesterases (CES1 and CES2) and arylacetamide deacetylase (AADAC), which are expressed primarily in the liver and/or gastrointestinal tract, hydrolyze drugs containing ester and amide bonds in their chemical structure. These enzymes often catalyze the conversion of prodrugs, including the COVID-19 drugs remdesivir and molnupiravir, to their pharmacologically active forms. Information on the substrate specificity and inhibitory properties of these enzymes, which would be useful for drug development and toxicity avoidance, has accumulated. Recently,in vitroandin vivostudies have shown that these enzymes are involved not only in drug hydrolysis but also in lipid metabolism. CES1 and CES2 are capable of hydrolyzing triacylglycerol, and the deletion of their orthologous genes in mice has been associated with impaired lipid metabolism and hepatic steatosis. Adeno-associated virus-mediated human CES overexpression decreases hepatic triacylglycerol levels and increases fatty acid oxidation in mice. It has also been shown that overexpression of CES enzymes or AADAC in cultured cells suppresses the intracellular accumulation of triacylglycerol. Recent reports indicate that AADAC can be up- or downregulated in tumors of various organs, and its varied expression is associated with poor prognosis in patients with cancer. Thus, CES and AADAC not only determine drug efficacy and toxicity but are also involved in pathophysiology. This review summarizes recent findings on the roles of CES and AADAC in drug metabolism, physiology, and pathology.
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Affiliation(s)
- Mai Nagaoka
- Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, Kanazawa University, Kanazawa, Japan
| | - Yoshiyuki Sakai
- Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, Kanazawa University, Kanazawa, Japan
| | - Miki Nakajima
- Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, Kanazawa University, Kanazawa, Japan; WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kanazawa, Japan
| | - Tatsuki Fukami
- Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, Kanazawa University, Kanazawa, Japan; WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kanazawa, Japan.
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Kato R, Yamada T, Noda T, Tanaka S, Kohda Y, Ijiri Y. Mechanism of non-steroidal anti-androgen-induced liver injury: Reactive metabolites of flutamide and bicalutamide activate inflammasomes. Toxicol In Vitro 2023; 90:105606. [PMID: 37146920 DOI: 10.1016/j.tiv.2023.105606] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 04/10/2023] [Accepted: 04/27/2023] [Indexed: 05/07/2023]
Abstract
Flutamide is a non-steroidal anti-androgen agent, which is mainly used for the treatment of prostate cancer. Flutamide is known to cause severe adverse events, which includes idiosyncratic liver injury. However, details of the mechanism of these adverse reactions have not been elucidated. We investigated whether flutamide induces the release of damage-associated molecular patterns (DAMPs) that activate inflammasomes. We also tested bicalutamide, enzalutamide, apalutamide, and darolutamide for their ability to activate inflammasomes in differentiated THP-1 cells. The supernatant from the incubation of flutamide and bicalutamide with human hepatocarcinoma functional liver cell-4 (FLC-4) cells increased caspase-1 activity and production of IL-1ß by differentiated THP-1 cells. In the supernatant of FLC-4 cells with flutamide and bicalutamide, the heat shock protein (HSP) 40 or 60 was significantly increased. Addition of a carboxylesterase or a CYP inhibitor to the FLC-4 cells prevented release of HSPs from the FLC-4 cells. These results suggested that the reactive metabolites of flutamide and bicalutamide can cause the release of DAMPs from hepatocytes and activate inflammasomes. Inflammasome activation may be an important step in the activation of the immune system by flutamide or bicalutamide, which in some patients, can cause immune-related adverse events.
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Affiliation(s)
- Ryuji Kato
- Department of Cardiovascular Pharmacotherapy and Toxicology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Osaka 569-1094, Japan.
| | - Tomoyuki Yamada
- Department of Pharmacy, Osaka Medical and Pharmaceutical University Hospital, Osaka 569-8686, Japan
| | - Takumi Noda
- Department of Cardiovascular Pharmacotherapy and Toxicology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Osaka 569-1094, Japan
| | - Saori Tanaka
- Department of Pharmacotherapeutics, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Osaka 569-1094, Japan
| | - Yuka Kohda
- Department of Pharmacotherapeutics, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Osaka 569-1094, Japan
| | - Yoshio Ijiri
- Department of Cardiovascular Pharmacotherapy and Toxicology, Faculty of Pharmacy, Osaka Medical and Pharmaceutical University, Osaka 569-1094, Japan
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Wang D, Zhao T, Zhao S, Chen J, Dou T, Ge G, Wang C, Sun H, Liu K, Meng Q, Wu J. Substrate-dependent inhibition of hypericin on human carboxylesterase 2: implications for herb-drug combination. Curr Drug Metab 2022; 23:38-44. [PMID: 35114918 DOI: 10.2174/1389200223666220202093303] [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: 09/13/2021] [Revised: 11/08/2021] [Accepted: 01/05/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Hypericin is the main active ingredient of St. John's wort, a Chinese herb commonly used in treating depression. Previous studies have shown that hypericin can strongly inhibit human cytochrome P450 (CYP) enzyme activities; however, its potential interactions that inhibit human carboxylesterases 2 (hCE2) were unclear. PURPOSE The study aimed to investigate the inhibition of hypericin on hCE2. METHODS The inhibition of hypericin on hCE2 was studied by using N-(2-butyl-1,3-dioxo-2,3-dihydro-1H-phenalen-6-yl)-2-chloroacetamide (NCEN). The type of inhibition of hypericin on hCE2 and the corresponding inhibition constant (Ki) value were determined. The inhibition of hypericin on hCE2 in living cells was discussed. The herb-drug interactions (HDI) risk of hypericin and hCE2 in vivo was predicted by estimating the drug concentration-time curve (AUC) ratio of hypericin and hypericin free. To understand the inhibition mechanism of hypericin on the activity of hCE2 in-depth, molecular docking was performed. RESULTS The half-maximal inhibitory concentration (IC50) values of hypericin against the hydrolysis of NCEN and irinotecan (CPT-11) were calculated to be 26.59 μM and 112.8 μM, respectively. Hypericin inhibited the hydrolysis of NCEN and CPT-11. Their Ki values were 10.53 μM and 81.77 μM, respectively. Moreover, hypericin distinctly suppressed hCE2 activity in living cells. In addition, the AUC of hCE2 metabolic drugs with metabolic sites similar to NCEN was estimated to increase by up to 5%, in the presence of hypericin. More importantly, the exposure of CPT-11 in the intestinal epithelium was predicted to increase by 2%-69% following the oral co-administration of hypericin. Further, molecular simulations indicated that hypericin could strongly interact with ASP98, PHE307, and ARG355 to form four hydrogen bonds within hCE2. CONCLUSION These findings are of considerable clinical significance to the combination of hypericin-containing herbs and drugs metabolized by hCE2.
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Affiliation(s)
- Dalong Wang
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Tingting Zhao
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Shan Zhao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Jing Chen
- School of Life Science and Medicine, Dalian University of Technology, Panjin, 124221, China
| | - Tongyi Dou
- School of Life Science and Medicine, Dalian University of Technology, Panjin, 124221, China
| | - Guangbo Ge
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Changyuan Wang
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, 116044, China.
- Provincial Key Laboratory for Pharmacokinetics and Transport, Liaoning Dalian Medical University, Dalian, Liaoning, China
| | - Huijun Sun
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, 116044, China.
- Provincial Key Laboratory for Pharmacokinetics and Transport, Liaoning Dalian Medical University, Dalian, Liaoning, China
| | - Kexin Liu
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, 116044, China.
- Provincial Key Laboratory for Pharmacokinetics and Transport, Liaoning Dalian Medical University, Dalian, Liaoning, China
| | - Qiang Meng
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, 116044, China.
- Provincial Key Laboratory for Pharmacokinetics and Transport, Liaoning Dalian Medical University, Dalian, Liaoning, China
| | - Jingjing Wu
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, 116044, China.
- Provincial Key Laboratory for Pharmacokinetics and Transport, Liaoning Dalian Medical University, Dalian, Liaoning, China
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Saha M, Sikder P, Saha A, Shah S, Sultana S, Emran T, Banik A, Islam Z, Islam MS, Sharker SM, Reza HM. QbD Approach towards Robust Design Space for Flutamide/PiperineSelf-Emulsifying Drug Delivery System with Reduced Liver Injury. AAPS PharmSciTech 2022; 23:62. [PMID: 35080685 DOI: 10.1208/s12249-022-02213-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 01/03/2022] [Indexed: 02/08/2023] Open
Abstract
Flutamide which is used to treat prostate cancer and other diseases induces liver damage during and after the therapy. The aim of this study was to develop a flutamide/piperineco-loaded self-emulsifying drug delivery system (FPSEDDS) to inhibit flutamide-induced liver injury by utilizing piperine as a metabolic inhibitor. The development of SEDDS was carried out following a quality by design (QbD) approach. The risk assessment study was performed to identify critical quality attributes (CQAs) and critical material attributes (CMAs)/critical process parameters (CPPs). I-optimal mixture design was executed with three CMAs as the independent variables and CQAs as the dependable variables. The effectiveness of optimized SEDDS to circumvent flutamide-induced hepatotoxicity was assessed in mice. The numerical optimization suggested an optimal formulation with a desirability value of 0.621, using CQAs targets as optimization goals with 95% prediction intervals (α = 0.05). The optimal formulation exhibited the grade A SEDDS characteristics with the guarantee of high payloads in self-formed oily droplets. The design space was also obtained from the same optimization goals. All CQA responses of verification points were found within the 95% prediction intervals of the polynomial models, indicating a good agreement between actual versus predicted responses within the design space. These obtained responses also passed CQAs acceptance criteria. Finally, hematoxylin-eosin staining revealed the minimal flutamide-induced hepatotoxicity from the optimal SEDDS formulation as compared to the control and flutamide/piperine normal suspension. We demonstrate that the piperine containing optimized SEDDS formulation developed by QbD significantly reduces the flutamide-induced liver injury in mice.
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Non-cytochrome P450 enzymes involved in the oxidative metabolism of xenobiotics: Focus on the regulation of gene expression and enzyme activity. Pharmacol Ther 2021; 233:108020. [PMID: 34637840 DOI: 10.1016/j.pharmthera.2021.108020] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 09/25/2021] [Accepted: 10/04/2021] [Indexed: 12/16/2022]
Abstract
Oxidative metabolism is one of the major biotransformation reactions that regulates the exposure of xenobiotics and their metabolites in the circulatory system and local tissues and organs, and influences their efficacy and toxicity. Although cytochrome (CY)P450s play critical roles in the oxidative reaction, extensive CYP450-independent oxidative metabolism also occurs in some xenobiotics, such as aldehyde oxidase, xanthine oxidoreductase, flavin-containing monooxygenase, monoamine oxidase, alcohol dehydrogenase, or aldehyde dehydrogenase-dependent oxidative metabolism. Drugs form a large portion of xenobiotics and are the primary target of this review. The common reaction mechanisms and roles of non-CYP450 enzymes in metabolism, factors affecting the expression and activity of non-CYP450 enzymes in terms of inhibition, induction, regulation, and species differences in pharmaceutical research and development have been summarized. These non-CYP450 enzymes are detoxifying enzymes, although sometimes they mediate severe toxicity. Synthetic or natural chemicals serve as inhibitors for these non-CYP450 enzymes. However, pharmacokinetic-based drug interactions through these inhibitors have rarely been reported in vivo. Although multiple mechanisms participate in the basal expression and regulation of non-CYP450 enzymes, only a limited number of inducers upregulate their expression. Therefore, these enzymes are considered non-inducible or less inducible. Overall, this review focuses on the potential xenobiotic factors that contribute to variations in gene expression levels and the activities of non-CYP450 enzymes.
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Ding Y, Ma H, Xu Y, Yang F, Li Y, Shi F, Lu Y. Potentiation of flutamide-induced hepatotoxicity in mice by Xian-Ling-Gu-Bao through induction of CYP1A2. JOURNAL OF ETHNOPHARMACOLOGY 2021; 278:114299. [PMID: 34090906 DOI: 10.1016/j.jep.2021.114299] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 05/22/2021] [Accepted: 06/02/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Xian-Ling-Gu-Bao (XLGB) Fufang is herbal formula widely used to treat osteoporosis and other bone disorders. Because of its commonality in the clinical use, there is a safety concern over the use of XLGB combined with other androgen deprivation therapy (ADT) drugs such as flutamide (FLU) that is associated with reduced bone density. To date, there have been no evaluations on the side effects of the drug-drug interaction between XLGB and FLU. AIM OF THE STUDY The present study was designed to investigate the hepatotoxicity in the context of the combined treatment of XLGB and FLU in a mouse model, and to determine whether the metabolic activation of FLU through induction of CYP1A2 plays a role in the increased hepatoxicity caused by the combination of XLGB and FLU. MATERIALS AND METHODS C57 mice were administered with either XLGB (6,160 mg/kg), FLU (300 mg/kg), or with the combination of the two drugs. Animals were treated with XLGB for 5 days before the combined administration of XLGB and FLU for another 4 days. The serum of mice from single or the combined administration groups was collected for biochemical analysis. The mouse liver was collected to examine liver morphological changes, evaluate liver coefficient, as well as determine the mRNA expression of P450 isozymes (Cyp1a2, Cyp3a11 and Cyp2c37). For metabolism analysis, mice were treated with XLGB, FLU, or the combination of XLGB and FLU for 24 h. The urine samples were collected for the analysis of FLU-NAC conjugate by UPLC-Q-Orbitrap MS. The liver microsomes were prepared from fresh livers to determine the activity of metabolizing enzyme CYP1A2. RESULTS The combined treatment of XLGB and FLU caused loss of mice body weight and elicited significant liver toxicity as evidenced by an increased liver coefficient and serum lactate dehydrogenase (LDH) activity as well as pathological changes of fatty lesion of liver tissue. FLU increased hepatic expression of Cyp1a2 mRNA that was further elevated in the liver of mice when administered with both FLU and XLGB. Treatment of FLU resulted in an increase in the expression of Cyp3a11 mRNA that was negated when mice were co-treated with FLU and XLGB. No significant difference in Cyp2c37 mRNA expression was observed among the different treatment groups as compared to the control. Analysis of metabolic activity showed that the combined administration caused a synergic effect in elevating the activity of the CYP1A2 enzyme. Mass spectrometry analysis identified the presence of FLU reactive metabolite derived FLU-NAC conjugate in the urine of mice treated with FLU. Strikingly, about a two-fold increase of the FLU-NAC conjugate was detected when treated with both FLU and XLGB, indicating an elevated amount of toxic metabolite produced from FLU in the present of XLGB. CONCLUSION FLU and XLGB co-treatment potentiated FLU-induced hepatoxicity. This increased hepatoxicity was mediated through the induction of CYP1A2 activity which in turn enhanced bioactivation of FLU leading to over production of FLU-NAC conjugate and oxidative stress. These results offer warnings about serious side effects of the FLU-XLGB interaction in the clinical practice.
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Affiliation(s)
- Yannan Ding
- Key Laboratory of Basic Pharmacology of Ministry of Education, Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563003, China; Department of Pharmacy, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
| | - Honghong Ma
- Key Laboratory of Basic Pharmacology of Ministry of Education, Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563003, China
| | - Yasha Xu
- Key Laboratory of Basic Pharmacology of Ministry of Education, Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563003, China
| | - Feng Yang
- Key Laboratory of Basic Pharmacology of Ministry of Education, Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563003, China
| | - Yi Li
- Key Laboratory of Basic Pharmacology of Ministry of Education, Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563003, China
| | - Fuguo Shi
- Key Laboratory of Basic Pharmacology of Ministry of Education, Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563003, China.
| | - Yuanfu Lu
- Key Laboratory of Basic Pharmacology of Ministry of Education, Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, 563003, China.
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Fukami T, Yokoi T, Nakajima M. Non-P450 Drug-Metabolizing Enzymes: Contribution to Drug Disposition, Toxicity, and Development. Annu Rev Pharmacol Toxicol 2021; 62:405-425. [PMID: 34499522 DOI: 10.1146/annurev-pharmtox-052220-105907] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Most clinically used drugs are metabolized in the body via oxidation, reduction, or hydrolysis reactions, which are considered phase I reactions. Cytochrome P450 (P450) enzymes, which primarily catalyze oxidation reactions, contribute to the metabolism of over 50% of clinically used drugs. In the last few decades, the function and regulation of P450s have been extensively studied, whereas the characterization of non-P450 phase I enzymes is still incomplete. Recent studies suggest that approximately 30% of drug metabolism is carried out by non-P450 enzymes. This review summarizes current knowledge of non-P450 phase I enzymes, focusing on their roles in controlling drug efficacy and adverse reactions as an important aspect of drug development. Expected final online publication date for the Annual Review of Pharmacology and Toxicology, Volume 62 is January 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Tatsuki Fukami
- Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, and WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan;
| | - Tsuyoshi Yokoi
- Department of Drug Safety Sciences, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya 466-8550, Japan
| | - Miki Nakajima
- Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, and WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan;
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Sha J, Hu K, Li T, Cao Z, Wan Y, Sun R, He H, Jiang G, Li Y, Li T, Ren B. Solubility determination, model correlation, solvent effect, molecular simulation and thermodynamic properties of flutamide in eleven pure solvents at different temperatures. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115559] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Nemeikaitė-Čėnienė A, Marozienė A, Misevičienė L, Tamulienė J, Yantsevich AV, Čėnas N. 5Flavoenzyme-catalyzed single-electron reduction of nitroaromatic antiandrogens: implications for their cytotoxicity. Free Radic Res 2021; 55:246-254. [PMID: 34098820 DOI: 10.1080/10715762.2021.1919304] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The therapeutic action of nitroaromatic antiandrogens nilutamide and flutamide may be complicated by their cytotoxicity, whose mechanisms are still incomprehensively understood. In particular this concerns the enzymatic redox cycling of flutamide and its metabolites, and its impact on their cytotoxicity. In this work, we examined the single-electron reduction of nilutamide, flutamide, its metabolites 2-hydroxyflutamide and 4-nitro-3-trifluorormethyl-phenylamine, and a topical antiandrogen (3-amino-2-hydroxy-2-methyl-N-(4-nitro-3-trifluoromethyl)-phenyl) propanamide by NADPH:cytochrome P-450 reductase and adrenodoxin reductase/adrenodoxin. The obtained steady-state bimolecular rate constants of oxidant reduction (kcat/Km) enabled to establish single-electron reduction midpoint potentials (E17) of compounds, -0.377 - -0.413 V, which were in line with enthalpies of formation of their free radicals, obtained by quantum mechanical calculations. Using murine hepatoma MH22a cells, the obtained cytotoxicity vs. E17 correlation based on the data of model nitroaromatic compounds shows that redox cycling and oxidative stress could be the main factor of cytotoxicity of nitroaromatic antiandrogens. Other minor cytotoxicity factors could be their redox metabolism involving NAD(P)H:quinone oxidoreductase (NQO1) and cytochromes P-450.
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Affiliation(s)
| | | | - Lina Misevičienė
- Institute of Biochemistry of Vilnius University, Vilnius, Lithuania
| | - Jelena Tamulienė
- Institute of Theoretical Physics and Astronomy of Vilnius University, Vilnius, Lithuania
| | | | - Narimantas Čėnas
- Institute of Biochemistry of Vilnius University, Vilnius, Lithuania
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Goda K, Muta K, Yasui Y, Oshida SI, Kitatani K, Takekoshi S. Selenium and Glutathione-Depleted Rats as a Sensitive Animal Model to Predict Drug-Induced Liver Injury in Humans. Int J Mol Sci 2019; 20:ijms20133141. [PMID: 31252607 PMCID: PMC6652140 DOI: 10.3390/ijms20133141] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 06/24/2019] [Accepted: 06/25/2019] [Indexed: 12/13/2022] Open
Abstract
Drug-induced liver injury (DILI) is one of the most serious and frequent drug-related adverse events in humans. Selenium (Se) and glutathione (GSH) have a crucial role for the hepatoprotective effect against reactive metabolites or oxidative damage leading to DILI. The hepatoprotective capacity related to Se and GSH in rodents is considered to be superior compared to the capacity in humans. Therefore, we hypothesize that Se/GSH-depleted rats could be a sensitive animal model to predict DILI in humans. In this study, Se-deficiency is induced by feeding a Se-deficient diet and GSH-deficiency is induced by l-buthionine-S,R-sulfoxinine treatment via drinking water. The usefulness of this animal model is validated using flutamide, which is known to cause DILI in humans but not in intact rats. In the Se/GSH-depleted rats from the present study, decreases in glutathione peroxidase-1 protein expression and GSH levels and an increase in malondialdehyde levels in the liver are observed without any increase in plasma liver function parameters. Five-day repeated dosing of flutamide at 150 mg/kg causes hepatotoxicity in the Se/GSH-depleted rats but not in normal rats. In conclusion, Se/GSH-depleted rats are the most sensitive for detecting flutamide-induced hepatotoxicity in all the reported animal models.
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Affiliation(s)
- Keisuke Goda
- Toxicology Research Lab., Central Pharmaceutical Research Institute, JAPAN TOBACCO INC., 1-13-2 Fukuura, Kanazawa, Yokohama, Kanagawa 236-0004, Japan.
- Department of Cell Biology, Division of Host Defense Mechanism, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan.
| | - Kyotaka Muta
- Toxicology Research Lab., Central Pharmaceutical Research Institute, JAPAN TOBACCO INC., 1-13-2 Fukuura, Kanazawa, Yokohama, Kanagawa 236-0004, Japan
| | - Yuzo Yasui
- Toxicology Research Lab., Central Pharmaceutical Research Institute, JAPAN TOBACCO INC., 1-13-2 Fukuura, Kanazawa, Yokohama, Kanagawa 236-0004, Japan
- Department of Cell Biology, Division of Host Defense Mechanism, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan
| | - Shin-Ichi Oshida
- Toxicology Research Lab., Central Pharmaceutical Research Institute, JAPAN TOBACCO INC., 1-13-2 Fukuura, Kanazawa, Yokohama, Kanagawa 236-0004, Japan
- Department of Cell Biology, Division of Host Defense Mechanism, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan
| | - Kanae Kitatani
- Department of Cell Biology, Division of Host Defense Mechanism, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan
| | - Susumu Takekoshi
- Department of Cell Biology, Division of Host Defense Mechanism, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan
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Comparison of three human liver cell lines for in vitro drug-induced liver injury assessment: Huh7, HepaRG, and stem cell-derived hepatocytes. Mol Cell Toxicol 2019. [DOI: 10.1007/s13273-019-0031-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Flutamide Induces Hepatic Cell Death and Mitochondrial Dysfunction via Inhibition of Nrf2-Mediated Heme Oxygenase-1. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:8017073. [PMID: 30057686 PMCID: PMC6051009 DOI: 10.1155/2018/8017073] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 04/22/2018] [Accepted: 05/10/2018] [Indexed: 01/08/2023]
Abstract
Flutamide is a widely used nonsteroidal antiandrogen for prostate cancer therapy, but its clinical application is restricted by the concurrent liver injury. Increasing evidence suggests that flutamide-induced liver injury is associated with oxidative stress, though the precise mechanism is poorly understood. Nuclear factor erythroid 2-related factor 2 (Nrf2) is a master transcription factor regulating endogenous antioxidants including heme oxygenase-1 (HO-1). This study was designed to delineate the role of Nrf2/HO-1 in flutamide-induced hepatic cell injury. Our results showed that flutamide concentration dependently induced cytotoxicity, hydrogen peroxide accumulation, and mitochondrial dysfunction as indicated by mitochondrial membrane potential loss and ATP depletion. The protein expression of Nrf2 and HO-1 was induced by flutamide at 12.5 μM but was downregulated by higher concentrations of flutamide. Silencing either Nrf2 or HO-1 was found to aggravate flutamide-induced hydrogen peroxide accumulation and mitochondrial dysfunction as well as inhibition of the Nrf2 pathway. Moreover, preinduction of HO-1 by Copp significantly attenuated flutamide-induced oxidative stress and mitochondrial dysfunction, while inhibition of HO-1 by Snpp aggravated these deleterious effects. These findings suggest that flutamide-induced hepatic cell death and mitochondrial dysfunction is assoicated with inhibition of Nrf2-mediated HO-1. Pharmacologic intervention of Nrf2/HO-1 may provide a promising therapeutic approach in flutamide-induced liver injury.
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Hejmej A, Bilinska B. The effects of flutamide on cell-cell junctions in the testis, epididymis, and prostate. Reprod Toxicol 2018; 81:1-16. [PMID: 29958919 DOI: 10.1016/j.reprotox.2018.06.014] [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: 03/27/2018] [Revised: 06/15/2018] [Accepted: 06/20/2018] [Indexed: 12/12/2022]
Abstract
In this review, we summarize recent findings on the effect of the anti-androgen flutamide on cell-cell junctions in the male reproductive system. We outline developmental aspects of flutamide action on the testis, epididymis, and prostate, and describe changes in junction protein expression and organization of junctional complexes in the adult boar following prenatal and postnatal exposure. We also discuss findings on the mechanisms by which flutamide induces alterations in cell-cell junctions in reproductive tissues of adult males, with special emphasis on cytoplasmic effects. Based on the results from in vivo and in vitro studies in the rat, we propose that flutamide affects the expression of junction proteins and junction complex structure not only by inhibiting androgen receptor activity, but equally important by modulating protein kinase-dependent signaling in testicular cells. Additionally, results from studies on prostate cancer cell lines point to a role for the cellular molecular outfit in response to flutamide.
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Affiliation(s)
- Anna Hejmej
- Department of Endocrinology, Institute of Zoology and Biomedical Research, Jagiellonian University, Krakow, Poland
| | - Barbara Bilinska
- Department of Endocrinology, Institute of Zoology and Biomedical Research, Jagiellonian University, Krakow, Poland.
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14
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Li JN, Cao YF, He RR, Ge GB, Guo B, Wu JJ. Evidence for Shikonin acting as an active inhibitor of human carboxylesterases 2: Implications for herb-drug combination. Phytother Res 2018; 32:1311-1319. [PMID: 29468758 DOI: 10.1002/ptr.6062] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Accepted: 01/25/2018] [Indexed: 12/17/2022]
Affiliation(s)
- Jia-Nan Li
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 China
- Department of Pharmacy; The First Affiliated Hospital of Jinzhou Medical University; Jinzhou 121001 China
| | - Yun-Feng Cao
- Key Laborotary of Liaoning Tumor Clinical Metabolomics; Jinzhou 121001 China
- RSKT Biopharma Inc.; Dalian 116023 China
| | - Rong-Rong He
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research; Guangzhou 510632 China
| | - Guang-Bo Ge
- Institute of Interdisciplinary Medicine; Shanghai University of Traditional Chinese Medicine; Shanghai 201203 China
| | - Bin Guo
- Department of Pharmacy; The First Affiliated Hospital of Jinzhou Medical University; Jinzhou 121001 China
| | - Jing-Jing Wu
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 China
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15
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Xu J, Oda S, Yokoi T. Cell-based assay using glutathione-depleted HepaRG and HepG2 human liver cells for predicting drug-induced liver injury. Toxicol In Vitro 2018; 48:286-301. [PMID: 29407385 DOI: 10.1016/j.tiv.2018.01.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 12/14/2017] [Accepted: 01/22/2018] [Indexed: 02/06/2023]
Abstract
Immortalized liver cells have been used for evaluating the toxicity of compounds; however, excessive glutathione is considered to lessen cytotoxicity. In this study, we compared the effects of glutathione depletion on cytotoxicities of drugs using HepaRG and HepG2 cells, which express and lack drug-metabolizing enzymes, respectively, for predicting drug-induced liver injury (DILI) risks. These cells were pre-incubated with L-buthionine-S,R-sulfoximine (BSO) and then exposed to 34 test compounds with various DILI risks for 24 h. ATP level exhibited the highest predictability of DILI among tested parameters. BSO treatment rendered cells susceptible to drug-induced cytotoxicity when evaluated by cell viability and caspase 3/7 activity with the sensitivity of cell viability from 50% in non-treated HepaRG cells to 71% in BSO-treated HepaRG cells. These results indicate that cytotoxicity assays using GSH-depleted HepaRG cells improve the predictability of DILI risks. However, HepaRG cells were not always superior to HepG2 cells when assessed by ATP level. The combination of HepG2 and HepaRG cells index produced the best prediction in the cases of caspase 3/7 acitivity and ATP level. In conclusions, the developed highly sensitive cell-based assay using GSH-reduced cells would be useful for predicting potential DILI risks at an early stage of drug development.
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Affiliation(s)
- Jieyu Xu
- Department of Drug Safety Sciences, Division of Clinical Pharmacology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Shingo Oda
- Department of Drug Safety Sciences, Division of Clinical Pharmacology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
| | - Tsuyoshi Yokoi
- Department of Drug Safety Sciences, Division of Clinical Pharmacology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan.
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16
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Identification of enzymes responsible for nitrazepam metabolism and toxicity in human. Biochem Pharmacol 2017; 140:150-160. [DOI: 10.1016/j.bcp.2017.06.114] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 06/07/2017] [Indexed: 12/16/2022]
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17
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Yoshida M, Cho N, Akita H, Kobayashi K. Association of a reactive intermediate derived from 1',6-dihydroxy metabolite with benzbromarone-induced hepatotoxicity. J Biochem Mol Toxicol 2017; 31. [PMID: 28598529 DOI: 10.1002/jbt.21946] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Revised: 05/21/2017] [Accepted: 05/24/2017] [Indexed: 12/13/2022]
Abstract
Treatment with benzbromarone can be associated with liver injury, but the detailed mechanism remains unknown. Our recent studies demonstrated that benzbromarone was metabolized to 1',6-dihydroxybenzbromarone and followed by formation of reactive intermediates that were trapped by glutathione, suggesting that the reactive intermediates may be responsible for the liver injury. The aim of this study was to clarify whether the reactive intermediates derived from 1',6-dihydroxybenzbromarone is a risk factor of liver injury in mice. An incubation study using mouse liver microsomes showed that the rates of formation of 1',6-dihydroxybenzbromarone from benzbromarone were increased by pretreatment with dexamethasone. Levels of a hepatic glutathione adduct derived from 1',6-dihydroxybenzbromarone were increased by pretreatment with dexamethasone. Furthermore, plasma alanine amino transferase activities were increased in mice treated with benzbromarone after pretreatment with dexamethasone. The results suggest that the reactive intermediate derived from 1',6-dihydroxybenzbromarone may be associated with liver injury.
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Affiliation(s)
- Mina Yoshida
- Laboratory of Pharmacology and Toxicology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Naoki Cho
- Laboratory of Pharmacology and Toxicology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Hidetaka Akita
- Laboratory of Pharmacology and Toxicology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
| | - Kaoru Kobayashi
- Laboratory of Pharmacology and Toxicology, Graduate School of Pharmaceutical Sciences, Chiba University, Chiba, Japan
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18
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Muta K, Fukami T, Nakajima M. A proposed mechanism for the adverse effects of acebutolol: CES2 and CYP2C19-mediated metabolism and antinuclear antibody production. Biochem Pharmacol 2015; 98:659-70. [DOI: 10.1016/j.bcp.2015.09.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 09/18/2015] [Indexed: 12/16/2022]
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19
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Affiliation(s)
- Tatsuki Fukami
- Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, Kanazawa University
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20
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Barber JA, Stahl SH, Summers C, Barrett G, Park BK, Foster JR, Kenna JG. Quantification of Drug-Induced Inhibition of Canalicular Cholyl-l-Lysyl-Fluorescein Excretion From Hepatocytes by High Content Cell Imaging. Toxicol Sci 2015. [PMID: 26220638 DOI: 10.1093/toxsci/kfv159] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We describe the use of a commercially available high content cell imaging algorithm (Cellomics Arrayscan Spot Detector) to quantify biliary excretion of the fluorescent probe substrate cholyl-l-lysyl-fluorescein (CLF) from rat hepatocytes cultured in collagen/matrigel sandwich configuration and to explore inhibition of this process by a variety of test compounds. The method provided robust, reproducible data. Twenty-nine pharmaceuticals inhibited biliary CLF efflux from hepatocytes and a broad range of potencies of inhibition were observed (IC50 values ranged between <1 and 794 µM). Thirteen drugs that inhibited CLF efflux also inhibited hepatocellular uptake of the probe substrate [(3)H]-taurocholate. Although no clear correlation between the potencies of inhibition of the 2 processes was evident, these data highlight the need to consider possible uptake transporter inhibition when interpreting hepatocyte CLF inhibition data. It has been reported that CLF is transported by MRP2. The CLF efflux inhibition data correlated closely with published data on inhibition by the drugs of the bile salt export pump (Bsep), which suggests that the tested drugs inhibit both Bsep and Mrp2. Calculation of the ratios between the maximum human plasma concentrations of the drugs and their CLF efflux inhibition IC50 values raised the possibility that for many, but not all, of them the in vitro effects may be functionally significant in vivo and that Mrp2 inhibition might be a drug-induced liver injury (DILI) risk factor. These data indicate that imaging hepatocyte CLF inhibition is a promising new method for quantification of biliary efflux inhibition by drugs, which could aid assessment of compound-related DILI risk.
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Affiliation(s)
- Jane A Barber
- *Innovative Medicines & Early Development, Discovery Safety, Drug Safety & Metabolism, AstraZeneca Pharmaceuticals, Alderley Park, Macclesfield SK10 4TG, UK; Department of Pharmacology & Therapeutics, University of Liverpool, Sherrington Building, Ashton Street, Liverpool, Merseyside, UK;
| | | | - Claire Summers
- *Innovative Medicines & Early Development, Discovery Safety, Drug Safety & Metabolism, AstraZeneca Pharmaceuticals, Alderley Park, Macclesfield SK10 4TG, UK
| | - Gillian Barrett
- Oncology iMEDs, AstraZeneca Pharmaceuticals, Alderley Park, Macclesfield, UK
| | - B Kevin Park
- Department of Pharmacology & Therapeutics, University of Liverpool, Sherrington Building, Ashton Street, Liverpool, Merseyside, UK
| | - John R Foster
- *Innovative Medicines & Early Development, Discovery Safety, Drug Safety & Metabolism, AstraZeneca Pharmaceuticals, Alderley Park, Macclesfield SK10 4TG, UK
| | - J Gerald Kenna
- *Innovative Medicines & Early Development, Discovery Safety, Drug Safety & Metabolism, AstraZeneca Pharmaceuticals, Alderley Park, Macclesfield SK10 4TG, UK
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21
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Oda S, Fukami T, Yokoi T, Nakajima M. A comprehensive review of UDP-glucuronosyltransferase and esterases for drug development. Drug Metab Pharmacokinet 2015; 30:30-51. [DOI: 10.1016/j.dmpk.2014.12.001] [Citation(s) in RCA: 136] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 11/24/2014] [Accepted: 12/02/2014] [Indexed: 01/24/2023]
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22
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Ott G, Plitzko B, Krischkowski C, Reichmann D, Bittner F, Mendel RR, Kunze T, Clement B, Havemeyer A. Reduction of Sulfamethoxazole Hydroxylamine (SMX-HA) by the Mitochondrial Amidoxime Reducing Component (mARC). Chem Res Toxicol 2014; 27:1687-95. [DOI: 10.1021/tx500174u] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Gudrun Ott
- Department
of Pharmaceutical and Medicinal Chemistry, Pharmaceutical Institute, Christian-Albrechts-University of Kiel, Gutenbergstrasse 76, D-24118 Kiel, Germany
| | - Birte Plitzko
- Department
of Pharmaceutical and Medicinal Chemistry, Pharmaceutical Institute, Christian-Albrechts-University of Kiel, Gutenbergstrasse 76, D-24118 Kiel, Germany
| | - Carmen Krischkowski
- Department
of Pharmaceutical and Medicinal Chemistry, Pharmaceutical Institute, Christian-Albrechts-University of Kiel, Gutenbergstrasse 76, D-24118 Kiel, Germany
| | - Debora Reichmann
- Department
of Plant Biology, Braunschweig University of Technology, Humboldtstrasse
1, D-38106 Braunschweig, Germany
| | - Florian Bittner
- Department
of Plant Biology, Braunschweig University of Technology, Humboldtstrasse
1, D-38106 Braunschweig, Germany
| | - Ralf R. Mendel
- Department
of Plant Biology, Braunschweig University of Technology, Humboldtstrasse
1, D-38106 Braunschweig, Germany
| | - Thomas Kunze
- Department
of Pharmaceutical and Medicinal Chemistry, Pharmaceutical Institute, Christian-Albrechts-University of Kiel, Gutenbergstrasse 76, D-24118 Kiel, Germany
| | - Bernd Clement
- Department
of Pharmaceutical and Medicinal Chemistry, Pharmaceutical Institute, Christian-Albrechts-University of Kiel, Gutenbergstrasse 76, D-24118 Kiel, Germany
| | - Antje Havemeyer
- Department
of Pharmaceutical and Medicinal Chemistry, Pharmaceutical Institute, Christian-Albrechts-University of Kiel, Gutenbergstrasse 76, D-24118 Kiel, Germany
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23
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Muta K, Fukami T, Nakajima M, Yokoi T. N-Glycosylation during translation is essential for human arylacetamide deacetylase enzyme activity. Biochem Pharmacol 2014; 87:352-9. [DOI: 10.1016/j.bcp.2013.10.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2013] [Revised: 10/01/2013] [Accepted: 10/03/2013] [Indexed: 10/26/2022]
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24
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Pedersen JM, Matsson P, Bergström CAS, Hoogstraate J, Norén A, LeCluyse EL, Artursson P. Early identification of clinically relevant drug interactions with the human bile salt export pump (BSEP/ABCB11). Toxicol Sci 2013; 136:328-43. [PMID: 24014644 PMCID: PMC3858191 DOI: 10.1093/toxsci/kft197] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
A comprehensive analysis was performed to investigate how inhibition of the human bile salt export pump (BSEP/ABCB11) relates to clinically observed drug-induced liver injury (DILI). Inhibition of taurocholate (TA) transport was investigated in BSEP membrane vesicles for a data set of 250 compounds, and 86 BSEP inhibitors were identified. Structure-activity modeling identified BSEP inhibition to correlate strongly with compound lipophilicity, whereas positive molecular charge was associated with a lack of inhibition. All approved drugs in the data set (n = 182) were categorized according to DILI warnings in drug labels issued by the Food and Drug Administration, and a strong correlation between BSEP inhibition and DILI was identified. As many as 38 of the 61 identified BSEP inhibitors were associated with severe DILI, including 9 drugs not previously linked to BSEP inhibition. Further, among the tested compounds, every second drug associated with severe DILI was a BSEP inhibitor. Finally, sandwich-cultured human hepatocytes (SCHH) were used to investigate the relationship between BSEP inhibition, TA transport, and clinically observed DILI in detail. BSEP inhibitors associated with severe DILI greatly reduced the TA canalicular efflux, whereas BSEP inhibitors with less severe or no DILI resulted in weak or no reduction of TA efflux in SCHH. This distinction illustrates the usefulness of SCHH in refined analysis of BSEP inhibition. In conclusion, BSEP inhibition in membrane vesicles was found to correlate to DILI severity, and altered disposition of TA in SCHH was shown to separate BSEP inhibitors associated with severe DILI from those with no or mild DILI.
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Affiliation(s)
- Jenny M Pedersen
- *Department of Pharmacy, Uppsala University, SE-751 23 Uppsala, Sweden
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25
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Kamp H, Strauss V, Wiemer J, Leibold E, Walk T, Mellert W, Looser R, Prokoudine A, Fabian E, Krennrich G, Herold M, van Ravenzwaay B. Reproducibility and robustness of metabolome analysis in rat plasma of 28-day repeated dose toxicity studies. Toxicol Lett 2012; 215:143-9. [DOI: 10.1016/j.toxlet.2012.09.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Revised: 09/18/2012] [Accepted: 09/24/2012] [Indexed: 11/28/2022]
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26
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Kobayashi Y, Fukami T, Shimizu M, Nakajima M, Yokoi T. Contributions of arylacetamide deacetylase and carboxylesterase 2 to flutamide hydrolysis in human liver. Drug Metab Dispos 2012; 40:1080-4. [PMID: 22446520 DOI: 10.1124/dmd.112.044537] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Flutamide, an antiandrogen drug, is widely used for the treatment of prostate cancer. The major metabolic pathways of flutamide are hydroxylation and hydrolysis. The hydrolyzed metabolite, 5-amino-2-nitrobenzotrifluoride (FLU-1), is further metabolized to N-hydroxy FLU-1, an assumed hepatotoxicant. Our previous study demonstrated that arylacetamide deacetylase (AADAC), one of the major serine esterases expressed in the human liver and gastrointestinal tract, catalyzes the flutamide hydrolysis. However, the enzyme kinetics in human tissue microsomes were not consistent with the kinetics by recombinant human AADAC. Thus, it seemed that AADAC is not the sole enzyme responsible for flutamide hydrolysis in human. In the present study, we found that recombinant carboxylesterase (CES) 2 could hydrolyze flutamide at low concentrations of flutamide. In the inhibition assay, the flutamide hydrolase activities at a flutamide concentration of 5 μM in human liver and jejunum microsomes were strongly inhibited by a selective CES2 inhibitor, 10 μM loperamide, with the residual activities of 22.9 ± 3.5 and 18.6 ± 0.7%, respectively. These results suggest that CES2 is also involved in the flutamide hydrolysis in human tissues. Using six individual human livers, the contributions of AADAC and CES2 to flutamide hydrolysis were estimated by using the relative activity factor. The relative contribution of CES2 was approximately 75 to 99% at the concentration of 5 μM flutamide. In contrast, the relative contribution of AADAC increased in parallel with the concentration of flutamide. Thus, CES2, rather than AADAC, largely contributed to the flutamide hydrolysis in clinical therapeutics.
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Affiliation(s)
- Yuki Kobayashi
- Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
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27
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28
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Higuchi S, Kobayashi M, Yano A, Tsuneyama K, Fukami T, Nakajima M, Yokoi T. Involvement of Th2 cytokines in the mouse model of flutamide-induced acute liver injury. J Appl Toxicol 2011; 32:815-22. [PMID: 21735453 DOI: 10.1002/jat.1706] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2011] [Revised: 05/10/2011] [Accepted: 05/10/2011] [Indexed: 02/03/2023]
Abstract
Drug-induced liver injury is a growing concern for pharmaceutical companies and patients because numerous drugs have been linked to hepatotoxicity and it is the most common reason for a drug to be withdrawn. Flutamide rarely causes liver dysfunction in humans, and immune allergic reactions have been suggested in some cases. In this study, we investigated the mechanisms of flutamide-induced liver injury in BALB/c mice. Plasma alanine aminotransferase and aspartate aminotransferase levels were significantly increased 3, 6 and 9 h after flutamide (1500 mg kg⁻¹ , p.o.) administration. The biomarker for oxidative stress was not changed, but Th2-dominant immune-related factors, such as interleukin (IL)-4, IL-5, STAT6 and GATA-binding protein (GATA)-3, were induced in flutamide-administered mice. The pre-administration of monoclonal-IL-4 antibody suppressed the hepatotoxicity of flutamide. In addition, we investigated the effect of 13,14-dihydro-15-keto-PGD₂ (DK-PGD₂; 10 µg per mouse, i.p.) administration on flutamide-induced acute liver injury. Coadministration of DK-PGD₂ and flutamide resulted in a significant increase in alanine aminotransferase and a remarkable increase of macrophage inflammatory protein-2. In conclusion, we demonstrated that flutamide-induced acute liver injury is mediated by Th2-dominant immune responses in mice.
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Affiliation(s)
- Satonori Higuchi
- Drug Metabolism and Toxicology, Faculty of Pharmaceutical Sciences, Kanazawa University, Kanazawa 920-1192, Japan
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29
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Hosomi H, Fukami T, Iwamura A, Nakajima M, Yokoi T. Development of a Highly Sensitive Cytotoxicity Assay System for CYP3A4-Mediated Metabolic Activation. Drug Metab Dispos 2011; 39:1388-95. [DOI: 10.1124/dmd.110.037077] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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30
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Iwamura A, Fukami T, Hosomi H, Nakajima M, Yokoi T. CYP2C9-Mediated Metabolic Activation of Losartan Detected by a Highly Sensitive Cell-Based Screening Assay. Drug Metab Dispos 2011; 39:838-46. [DOI: 10.1124/dmd.110.037259] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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31
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Perkins EJ, Chipman JK, Edwards S, Habib T, Falciani F, Taylor R, Van Aggelen G, Vulpe C, Antczak P, Loguinov A. Reverse engineering adverse outcome pathways. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2011; 30:22-38. [PMID: 20963852 DOI: 10.1002/etc.374] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The toxicological effects of many stressors are mediated through unknown, or incompletely characterized, mechanisms of action. The application of reverse engineering complex interaction networks from high dimensional omics data (gene, protein, metabolic, signaling) can be used to overcome these limitations. This approach was used to characterize adverse outcome pathways (AOPs) for chemicals that disrupt the hypothalamus-pituitary-gonadal endocrine axis in fathead minnows (FHM, Pimephales promelas). Gene expression changes in FHM ovaries in response to seven different chemicals, over different times, doses, and in vivo versus in vitro conditions, were captured in a large data set of 868 arrays. Potential AOPs of the antiandrogen flutamide were examined using two mutual information-based methods to infer gene regulatory networks and potential AOPs. Representative networks from these studies were used to predict network paths from stressor to adverse outcome as candidate AOPs. The relationship of individual chemicals to an adverse outcome can be determined by following perturbations through the network in response to chemical treatment, thus leading to the nodes associated with the adverse outcome. Identification of candidate pathways allows for formation of testable hypotheses about key biological processes, biomarkers, or alternative endpoints that can be used to monitor an AOP. Finally, the unique challenges facing the application of this approach in ecotoxicology were identified and a road map for the utilization of these tools presented.
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Affiliation(s)
- Edward J Perkins
- U.S. Army Engineering Research and Development Center, Vicksburg, Mississippi, USA.
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32
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Hosomi H, Akai S, Minami K, Yoshikawa Y, Fukami T, Nakajima M, Yokoi T. An in vitro drug-induced hepatotoxicity screening system using CYP3A4-expressing and γ-glutamylcysteine synthetase knockdown cells. Toxicol In Vitro 2010; 24:1032-8. [DOI: 10.1016/j.tiv.2009.11.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2009] [Revised: 10/14/2009] [Accepted: 11/26/2009] [Indexed: 10/20/2022]
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33
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Kashimshetty R, Desai VG, Kale VM, Lee T, Moland CL, Branham WS, New LS, Chan EC, Younis H, Boelsterli UA. Underlying mitochondrial dysfunction triggers flutamide-induced oxidative liver injury in a mouse model of idiosyncratic drug toxicity. Toxicol Appl Pharmacol 2009; 238:150-9. [DOI: 10.1016/j.taap.2009.05.007] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2008] [Revised: 04/20/2009] [Accepted: 05/04/2009] [Indexed: 12/14/2022]
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34
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Morita M, Akai S, Hosomi H, Tsuneyama K, Nakajima M, Yokoi T. Drug-induced hepatotoxicity test using gamma-glutamylcysteine synthetase knockdown rat. Toxicol Lett 2009; 189:159-65. [PMID: 19481141 DOI: 10.1016/j.toxlet.2009.05.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2009] [Revised: 05/20/2009] [Accepted: 05/20/2009] [Indexed: 10/20/2022]
Abstract
Idiosyncratic drug-induced liver injury (DILI) is a major clinical problem for drug development. It is generally known that DILI is mainly caused by hepatic glutathione (GSH) depletion. The glutathione S-transferase activity of rodent is higher than that of human, which could make the prediction of DILI more difficult. Recently, we reported that an experimental rat model of GSH-depletion displayed high susceptibility to acetaminophen-induced hepatotoxicity. To deplete GSH, we used an adenovirus vector with short hairpin RNA against gamma-glutamylcysteine synthetase heavy chain subunit (AdGCSh-shRNA). In this study, we further investigated the usefulness of this rat model for determining drug-induced sensitive acute and subacute toxicity. Rats were administered diclofenac and flutamide which have been reported as idiosyncratic hepatotoxic drugs. In the acute (6 or 24h) or subacute (7 days) toxicity tests, rats were administered the drugs once or once a day for a week, respectively. Plasma biochemical markers for hepatotoxicity were measured. The 6 and 24h toxicity test of diclofenac, and the 24h and 7 days toxicity tests of flutamide showed significant ALT elevations. Additionally, the 24h toxicity test of flutamide showed a slight bilirubin elevation, and histological hepatotoxicity. The 7 days toxicity test of flutamide also demonstrated histological hepatotoxicity. In conclusion, this rat model would contribute to evaluating acute and subacute DILI in preclinical drug development.
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Affiliation(s)
- Mayu Morita
- Division of Pharmaceutical Sciences, Faculty of Pharmaceutical Science, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
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