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Luchkova A, Mata A, Cadenas S. Nrf2 as a regulator of energy metabolism and mitochondrial function. FEBS Lett 2024. [PMID: 39118293 DOI: 10.1002/1873-3468.14993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 06/13/2024] [Accepted: 06/27/2024] [Indexed: 08/10/2024]
Abstract
Nuclear factor erythroid-2-related factor 2 (Nrf2) is essential for the control of cellular redox homeostasis. When activated, Nrf2 elicits cytoprotective effects through the expression of several genes encoding antioxidant and detoxifying enzymes. Nrf2 can also improve antioxidant defense via the pentose phosphate pathway by increasing NADPH availability to regenerate glutathione. Microarray and genome-wide localization analyses have identified many Nrf2 target genes beyond those linked to its redox-regulatory capacity. Nrf2 regulates several intermediary metabolic pathways and is involved in cancer cell metabolic reprogramming, contributing to malignant phenotypes. Nrf2 also modulates substrate utilization for mitochondrial respiration. Here we review the experimental evidence supporting the essential role of Nrf2 in the regulation of energy metabolism and mitochondrial function.
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Affiliation(s)
- Alina Luchkova
- Centro de Biología Molecular Severo Ochoa (CSIC/UAM), Cantoblanco, Madrid, Spain
| | - Ana Mata
- Centro de Biología Molecular Severo Ochoa (CSIC/UAM), Cantoblanco, Madrid, Spain
| | - Susana Cadenas
- Centro de Biología Molecular Severo Ochoa (CSIC/UAM), Cantoblanco, Madrid, Spain
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2
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Laddha AP, Dzielak L, Lewis C, Xue R, Manautou JE. Impact of non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis (NASH) on the expression and function of hepatobiliary transporters: A comprehensive mechanistic review. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167037. [PMID: 38295624 DOI: 10.1016/j.bbadis.2024.167037] [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: 09/07/2023] [Revised: 01/11/2024] [Accepted: 01/20/2024] [Indexed: 02/02/2024]
Abstract
The liver plays a central role in the biotransformation and disposition of endogenous molecules and xenobiotics. In addition to drug-metabolizing enzymes, transporter proteins are key determinants of drug hepatic clearance. Hepatic transporters are transmembrane proteins that facilitate the movement of chemicals between sinusoidal blood and hepatocytes. Other drug transporters translocate molecules from hepatocytes into bile canaliculi for biliary excretion. The formers are known as basolateral, while the latter are known as canalicular transporters. Also, these transporters are classified into two super-families, the solute carrier transporter (SLC) and the adenosine triphosphate (ATP)-binding cassette (ABC) transporter. The expression and function of transporters involve complex regulatory mechanisms, which are contributing factors to interindividual variability in drug pharmacokinetics and disposition. A considerable number of liver diseases are known to alter the expression and function of drug transporters. Among them, non-alcoholic fatty liver disease (NAFLD) is a chronic condition with a rapidly increasing incidence worldwide. NAFLD, recently reclassified as metabolic dysfunction-associated steatotic liver disease (MASLD), is a disease continuum that includes steatosis with or without mild inflammation (NASH), and potentially neuroinflammatory pathology. NASH is additionally characterized by the presence of hepatocellular injury. During NAFLD and NASH, drug transporters exhibit altered expression and function, leading to altered drug pharmacokinetics and pharmacodynamics, thus increasing the risk of adverse drug reactions. The purpose of the present review is to provide comprehensive mechanistic information on the expression and function of hepatic transporters under fatty liver conditions and hence, the impact on the pharmacokinetic profiles of certain drugs from the available pre-clinical and clinical literature.
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Affiliation(s)
- Ankit P Laddha
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT, USA
| | - Lindsey Dzielak
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT, USA; Non-Clinical Drug Safety (NDS) Department, Boehringer Ingelheim Pharmaceutical Co., Ridgefield, CT, USA
| | - Cedric Lewis
- Non-Clinical Drug Safety (NDS) Department, Boehringer Ingelheim Pharmaceutical Co., Ridgefield, CT, USA
| | - Raymond Xue
- Charles River Laboratories, Inc., Shrewsbury, MA, USA
| | - José E Manautou
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT, USA.
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3
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Jaeschke H, Ramachandran A. Acetaminophen Hepatotoxicity: Paradigm for Understanding Mechanisms of Drug-Induced Liver Injury. ANNUAL REVIEW OF PATHOLOGY 2024; 19:453-478. [PMID: 38265880 PMCID: PMC11131139 DOI: 10.1146/annurev-pathmechdis-051122-094016] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
Acetaminophen (APAP) overdose is the clinically most relevant drug hepatotoxicity in western countries, and, because of translational relevance of animal models, APAP is mechanistically the most studied drug. This review covers intracellular signaling events starting with drug metabolism and the central role of mitochondrial dysfunction involving oxidant stress and peroxynitrite. Mitochondria-derived endonucleases trigger nuclear DNA fragmentation, the point of no return for cell death. In addition, adaptive mechanisms that limit cell death are discussed including autophagy, mitochondrial morphology changes, and biogenesis. Extensive evidence supports oncotic necrosis as the mode of cell death; however, a partial overlap with signaling events of apoptosis, ferroptosis, and pyroptosis is the basis for controversial discussions. Furthermore, an update on sterile inflammation in injury and repair with activation of Kupffer cells, monocyte-derived macrophages, and neutrophils is provided. Understanding these mechanisms of cell death led to discovery of N-acetylcysteine and recently fomepizole as effective antidotes against APAP toxicity.
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Affiliation(s)
- Hartmut Jaeschke
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas, USA; ,
| | - Anup Ramachandran
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas, USA; ,
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4
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Ghosh P, Magee N, Akakpo JY, Ahamed F, Eppler N, Jones E, Yu Y, He L, Lebofsky M, Dai H, Jaeschke H, Ding WX, Zhang Y. Hepatocyte-specific deletion of small heterodimer partner protects mice against acetaminophen-induced hepatotoxicity via activation of Nrf2. Toxicol Sci 2023; 197:53-68. [PMID: 37792503 PMCID: PMC10734614 DOI: 10.1093/toxsci/kfad104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/06/2023] Open
Abstract
Acetaminophen (APAP) overdose stands as the primary cause of acute liver failure in the United States. APAP hepatotoxicity involves hepatic glutathione (GSH) depletion and mitochondrial damage. To counteract the toxicity of APAP, the nuclear factor erythroid 2 like 2 (Nrf2) activates the expression of genes responsible for drug detoxification and GSH synthesis. In this study, we present evidence that the elimination of hepatocyte small heterodimer partner, a critical transcriptional repressor for liver metabolism, results in Nrf2 activation and protects mice from APAP-induced acute liver injury. Initial investigations conducted on wildtype (WT) mice revealed a swift downregulation of Shp mRNA within the first 24 h after APAP administration. Subsequent treatment of hepatocyte-specific Shp knockout (ShpHep-/-) mice with 300 mg/kg APAP for 2 h exhibited comparable bioactivation of APAP with that observed in the WT controls. However, a significant reduction in liver injury was observed in ShpHep-/- after APAP treatment for 6 and 24 h. The decreased liver injury correlated with a faster recovery of GSH, attributable to heightened expression of Nrf2 target genes involved in APAP detoxification and GSH synthesis. Moreover, in vitro studies revealed that SHP protein interacted with NRF2 protein, inhibiting the transcription of Nrf2 target genes. These findings hold relevance for humans, as overexpression of SHP hindered APAP-induced NRF2 activation in primary human hepatocytes. In conclusion, our studies have unveiled a novel regulatory axis involving SHP and NRF2 in APAP-induced acute liver injury, emphasizing SHP as a promising therapeutic target in APAP overdose-induced hepatotoxicity.
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Affiliation(s)
- Priyanka Ghosh
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Nancy Magee
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Jephte Y Akakpo
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Forkan Ahamed
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Natalie Eppler
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Elizabeth Jones
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Yifan Yu
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Lily He
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Margitta Lebofsky
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Hongyan Dai
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Hartmut Jaeschke
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Wen-Xing Ding
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Yuxia Zhang
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
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5
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Ji J, Ma S, Zhu Y, Zhao J, Tong Y, You Q, Jiang Z. ARE-PROTACs Enable Co-degradation of an Nrf2-MafG Heterodimer. J Med Chem 2023; 66:6070-6081. [PMID: 36892138 DOI: 10.1021/acs.jmedchem.2c01909] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Abstract
Proteolysis-targeting chimera (PROTAC) technology has emerged as a potential strategy to degrade "undruggable" proteins in recent years. Nrf2, an aberrantly activated transcription factor in cancer, is generally considered undruggable as lacking active sites or allosteric pockets. Here, we constructed the chimeric molecule C2, which consists of an Nrf2-binding element and a CRBN ligand, as a first-in-class Nrf2 degrader. Surprisingly, C2 was found to selectively degrade an Nrf2-MafG heterodimer simultaneously via the ubiquitin-proteasome system. C2 impeded Nrf2-ARE transcriptional activity significantly and improved the sensitivity of NSCLC cells to ferroptosis and therapeutic drugs. The degradation character of ARE-PROTACs suggests that the PROTAC hijacking the transcription element of TFs could achieve co-degradation of the transcription complex.
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Affiliation(s)
- Jianai Ji
- Jiang Su Key Laboratory of Drug Design and Optimization and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Sinan Ma
- Jiang Su Key Laboratory of Drug Design and Optimization and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Yuxuan Zhu
- Jiang Su Key Laboratory of Drug Design and Optimization and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Jinglong Zhao
- Jiang Su Key Laboratory of Drug Design and Optimization and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Yuanyuan Tong
- Jiang Su Key Laboratory of Drug Design and Optimization and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
| | - Qidong You
- Jiang Su Key Laboratory of Drug Design and Optimization and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China.,Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Zhengyu Jiang
- Jiang Su Key Laboratory of Drug Design and Optimization and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China.,Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
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Shearn CT, Anderson AL, Miller CG, Noyd RC, Devereaux MW, Balasubramaniyan N, Orlicky DJ, Schmidt EE, Sokol RJ. Thioredoxin reductase 1 regulates hepatic inflammation and macrophage activation during acute cholestatic liver injury. Hepatol Commun 2023; 7:e0020. [PMID: 36633484 PMCID: PMC9833450 DOI: 10.1097/hc9.0000000000000020] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 10/27/2022] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND AND AIMS Cholestatic liver diseases, including primary sclerosing cholangitis, are characterized by periportal inflammation with progression to hepatic fibrosis and ultimately cirrhosis. We recently reported that the thioredoxin antioxidant response is dysregulated during primary sclerosing cholangitis. The objective of this study was to examine the impact of genetic and pharmacological targeting of thioredoxin reductase 1 (TrxR1) on hepatic inflammation and liver injury during acute cholestatic injury. APPROACH AND RESULTS Primary mouse hepatocytes and intrahepatic macrophages were isolated from 3-day bile duct ligated (BDL) mice and controls. Using wildtype and mice with a liver-specific deletion of TrxR1 (TrxR1LKO), we analyzed the effect of inhibition or ablation of TrxR1 signaling on liver injury and inflammation. Immunohistochemical analysis of livers from BDL mice and human cholestatic patients revealed increased TrxR1 staining in periportal macrophages and hepatocytes surrounding fibrosis. qPCR analysis of primary hepatocytes and intrahepatic macrophages revealed increased TrxR1 mRNA expression following BDL. Compared with sham controls, BDL mice exhibited increased inflammation, necrosis, and increased mRNA expression of pro-inflammatory cytokines, fibrogenesis, the NLRP3 inflammatory complex, and increased activation of NFkB, all of which were ameliorated in TrxR1LKO mice. Importantly, following BDL, TrxR1LKO induced periportal hepatocyte expression of Nrf2-dependent antioxidant proteins and increased mRNA expression of basolateral bile acid transporters with reduced expression of bile acid synthesis genes. In the acute BDL model, the TrxR1 inhibitor auranofin (10 mg/kg/1 d preincubation, 3 d BDL) ameliorated BDL-dependent increases in Nlrp3, GsdmD, Il1β, and TNFα mRNA expression despite increasing serum alanine aminotransferase, aspartate aminotransferase, bile acids, and bilirubin. CONCLUSIONS These data implicate TrxR1-signaling as an important regulator of inflammation and bile acid homeostasis in cholestatic liver injury.
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Affiliation(s)
- Colin T. Shearn
- Department of Pediatrics, Section of Pediatric Gastroenterology, Hepatology and Nutrition, University of Colorado School of Medicine, Aurora, Colorado, USA
- Digestive Health Institute, Children’s Hospital Colorado, Aurora, Colorado, USA
| | - Aimee L. Anderson
- Department of Pediatrics, Section of Pediatric Gastroenterology, Hepatology and Nutrition, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Colin G. Miller
- Department of Microbiology & Cell Biology, Montana State University, Bozeman, Montana, USA
| | - Reed C. Noyd
- Department of Microbiology & Cell Biology, Montana State University, Bozeman, Montana, USA
| | - Michael W. Devereaux
- Department of Pediatrics, Section of Pediatric Gastroenterology, Hepatology and Nutrition, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Nata Balasubramaniyan
- Department of Pediatrics, Section of Pediatric Gastroenterology, Hepatology and Nutrition, University of Colorado School of Medicine, Aurora, Colorado, USA
- Digestive Health Institute, Children’s Hospital Colorado, Aurora, Colorado, USA
| | - David J. Orlicky
- Department of Pathology, University of Colorado School of Medicine, Aurora, Colorado, USA
| | - Edward E. Schmidt
- Department of Microbiology & Cell Biology, Montana State University, Bozeman, Montana, USA
- Laboratory of Redox Biology, Departments of Pharmacology and Physiology, University of Veterinary Medicine Budapest, Hungary
| | - Ronald J. Sokol
- Department of Pediatrics, Section of Pediatric Gastroenterology, Hepatology and Nutrition, University of Colorado School of Medicine, Aurora, Colorado, USA
- Digestive Health Institute, Children’s Hospital Colorado, Aurora, Colorado, USA
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7
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Ni B, Liu Y, Gao X, Cai M, Fu J, Yin X, Ni J, Dong X. Isoliquiritigenin attenuates emodin-induced hepatotoxicity in vivo and in vitro through Nrf2 pathway. Comp Biochem Physiol C Toxicol Pharmacol 2022; 261:109430. [PMID: 35944824 DOI: 10.1016/j.cbpc.2022.109430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 07/27/2022] [Accepted: 08/03/2022] [Indexed: 12/14/2022]
Abstract
Emodin (EMO), the main bioactive component of Polygonum multiflorum, Rheum palmatum, Aloe vera and Cassia acutifolia, can cause severe hepatotoxicity. Isoliquiritigenin (ISL), a flavonoid compound from the Glycyrrhiza, has been reported to be the most potent antioxidant response element (ARE)-luciferase inducer among the main components of licorice. But the protective effect and underlying mechanism of ISL on liver injury induced by EMO has not been reported. This study aims to explore the role of nuclear transcription factor 2 (Nrf2) in EMO-induced hepatotoxicity and the protective effect of ISL. EMO treatment caused cytotoxicity in L-02 cells. Combined treatment of EMO with ISL effectively reversed changes in cell viability, reduced reactive oxygen species (ROS) generation and malondialdehyde (MDA) generation, enhanced the levels of glutathione (GSH) and super oxide dismutase (SOD) induced by EMO in L-02 cells. Furthermore, ISL could also phosphorylate mitogen-activated protein kinases (MAPKs) and up-regulate Kelth-like ECH-associated protein (Keap1). The pathways of MAPKs and Keap1 lead to the separation of Keap1 and Nrf2. Free Nrf2 transferred to the nucleus and enhanced the expression of phase II detoxification enzymes. In conclusion, our results are the first to highlight the beneficial role and relevant mechanisms of ISL in EMO-induced liver injury and provide novel insight into its application.
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Affiliation(s)
- Boran Ni
- Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing 100700, China
| | - Yi Liu
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xue Gao
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Mengru Cai
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Jing Fu
- Beijing Institute of Traditional Chinese Medicine, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Xingbin Yin
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China
| | - Jian Ni
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China.
| | - Xiaoxv Dong
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China.
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8
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Ghanem CI, Manautou JE. Role and Regulation of Hepatobiliary ATP-Binding Cassette Transporters during Chemical-Induced Liver Injury. Drug Metab Dispos 2022; 50:1376-1388. [PMID: 35914951 PMCID: PMC9513844 DOI: 10.1124/dmd.121.000450] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 07/20/2022] [Indexed: 11/22/2022] Open
Abstract
Severity of drug-induced liver injury (DILI) ranges from mild, asymptomatic, and transient elevations in liver function tests to irreversible liver damage, often needing transplantation. Traditionally, DILI is classified mechanistically as high-frequency intrinsic DILI, commonly dose dependent or DILI that rarely occurs and is idiosyncratic in nature. This latter form is not dose dependent and has a pattern of histopathological manifestation that is not always uniform. Currently, a third type of DILI called indirect hepatotoxicity has been described that is associated with the pharmacological action of the drug. Historically, DILI was primarily linked to drug metabolism events; however, the impact of transporter-mediated rates of drug uptake and excretion has gained greater prominence in DILI research. This review provides a comprehensive view of the major findings from studies examining the contribution of hepatic ATP-binding cassette transporters as key contributors to DILI and how changes in their expression and function influence the development, severity, and overall toxicity outcome. SIGNIFICANCE STATEMENT: Drug-induced liver injury (DILI) continues to be a focal point in drug development research. ATP-binding cassette (ABC) transporters have emerged as important determinants of drug detoxification, disposition, and safety. This review article provides a comprehensive analysis of the literature addressing: (a) the role of hepatic ABC transporters in DILI, (b) the influence of genetic mutations in ABC transporters on DILI, and (c) new areas of research emphasis, such as the influence of the gut microbiota and epigenetic regulation, on ABC transporters.
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Affiliation(s)
- Carolina I Ghanem
- Instituto de Investigaciones Farmacológicas (ININFA-UBA-CONICET) (C.I.G.) and Cátedra de Fisiopatología (C.I.G.), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Argentina; and Department of Pharmaceutical Sciences, University of Connecticut, Storrs, Connecticut (J.E.M.)
| | - Jose E Manautou
- Instituto de Investigaciones Farmacológicas (ININFA-UBA-CONICET) (C.I.G.) and Cátedra de Fisiopatología (C.I.G.), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Argentina; and Department of Pharmaceutical Sciences, University of Connecticut, Storrs, Connecticut (J.E.M.)
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9
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Hepatic SIRT6 Modulates Transcriptional Activities of FXR to Alleviate Acetaminophen-induced Hepatotoxicity. Cell Mol Gastroenterol Hepatol 2022; 14:271-293. [PMID: 35526796 PMCID: PMC9218579 DOI: 10.1016/j.jcmgh.2022.04.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 04/21/2022] [Accepted: 04/26/2022] [Indexed: 01/06/2023]
Abstract
BACKGROUND & AIMS Excessive acetaminophen (APAP) intake causes oxidative stress and inflammation, leading to fatal hepatotoxicity; however, the mechanism remains unclear. This study aims to explore the protective effects and detailed mechanisms of sirtuin 6 (SIRT6) in the defense against APAP-induced hepatotoxicity. METHODS Hepatocyte-specific SIRT6 knockout mice, farnesoid X receptor (FXR) knockout mice, and mice with genetic or pharmacological activation of SIRT6 were subjected to APAP to evaluate the critical role of SIRT6 in the pathogenesis of acute liver injury. RNA sequences were used to investigate molecular mechanisms underlying this process. RESULTS Hepatic SIRT6 expression was substantially reduced in the patients and mice with acute liver injury. The deletion of SIRT6 in mice and mice primary hepatocytes led to high N-acetyl-p-benzo-quinoneimine and low glutathione levels in the liver, thereby enhancing APAP overdose-induced liver injury, manifested as increased hepatic centrilobular necrosis, oxidative stress, and inflammation. Conversely, overexpression or pharmacological activation of SIRT6 enhanced glutathione and decreased N-acetyl-p-benzo-quinoneimine, thus alleviating APAP-induced hepatotoxicity via normalization of liver damage, inflammatory infiltration, and oxidative stress. Our molecular analysis revealed that FXR is regulated by SIRT6, which is associated with the pathological progression of ALI. Mechanistically, SIRT6 deacetylates FXR and elevates FXR transcriptional activity. FXR ablation in mice and mice primary hepatocytes prominently blunted SIRT6 overexpression and activation-mediated ameliorative effects. Conversely, pharmacological activation of FXR mitigated APAP-induced hepatotoxicity in SIRT6 knockout mice. CONCLUSIONS Our current study suggests that SIRT6 plays a crucial role in APAP-induced hepatotoxicity, and pharmacological activation of SIRT6 may represent a novel therapeutic strategy for APAP overdose-induced liver injury.
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10
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Alaei Faradonbeh F, Lastuvkova H, Cermanova J, Hroch M, Nova Z, Uher M, Hirsova P, Pavek P, Micuda S. Multidrug Resistance-Associated Protein 2 Deficiency Aggravates Estrogen-Induced Impairment of Bile Acid Metabolomics in Rats. Front Physiol 2022; 13:859294. [PMID: 35388287 PMCID: PMC8979289 DOI: 10.3389/fphys.2022.859294] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 02/21/2022] [Indexed: 12/23/2022] Open
Abstract
Multidrug resistance-associated protein 2 (Mrp2) mediates biliary secretion of anionic endobiotics and xenobiotics. Genetic alteration of Mrp2 leads to conjugated hyperbilirubinemia and predisposes to the development of intrahepatic cholestasis of pregnancy (ICP), characterized by increased plasma bile acids (BAs) due to mechanisms that are incompletely understood. Therefore, this study aimed to characterize BA metabolomics during experimental Mrp2 deficiency and ICP. ICP was modeled by ethinylestradiol (EE) administration to Mrp2-deficient (TR) rats and their wild-type (WT) controls. Spectra of BAs were analyzed in plasma, bile, and stool using an advanced liquid chromatography–mass spectrometry (LC–MS) method. Changes in BA-related genes and proteins were analyzed in the liver and intestine. Vehicle-administered TR rats demonstrated higher plasma BA concentrations consistent with reduced BA biliary secretion and increased BA efflux from hepatocytes to blood via upregulated multidrug resistance-associated protein 3 (Mrp3) and multidrug resistance-associated protein 4 (Mrp4) transporters. TR rats also showed a decrease in intestinal BA reabsorption due to reduced ileal sodium/bile acid cotransporter (Asbt) expression. Analysis of regulatory mechanisms indicated that activation of the hepatic constitutive androstane receptor (CAR)-Nuclear factor erythroid 2-related factor 2 (Nrf2) pathway by accumulating bilirubin may be responsible for changes in BA metabolomics in TR rats. Ethinylestradiol administration to TR rats further increased plasma BA concentrations as a result of reduced BA uptake and increased efflux via reduced Slco1a1 and upregulated Mrp4 transporters. These results demonstrate that Mrp2-deficient organism is more sensitive to estrogen-induced cholestasis. Inherited deficiency in Mrp2 is associated with activation of Mrp3 and Mrp4 proteins, which is further accentuated by increased estrogen. Bile acid monitoring is therefore highly desirable in pregnant women with conjugated hyperbilirubinemia for early detection of intrahepatic cholestasis.
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Affiliation(s)
- Fatemeh Alaei Faradonbeh
- Department of Pharmacology, Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czechia
| | - Hana Lastuvkova
- Department of Pharmacology, Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czechia
| | - Jolana Cermanova
- Department of Pharmacology, Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czechia
| | - Milos Hroch
- Department of Medical Biochemistry, Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czechia
| | - Zuzana Nova
- Department of Pharmacology, Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czechia
| | - Martin Uher
- Department of Medical Biochemistry, Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czechia
| | - Petra Hirsova
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, United States
| | - Petr Pavek
- Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Kralove, Charles University, Hradec Kralove, Czechia
| | - Stanislav Micuda
- Department of Pharmacology, Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czechia
- *Correspondence: Stanislav Micuda,
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11
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Potential Role of Selenium in the Treatment of Cancer and Viral Infections. Int J Mol Sci 2022; 23:ijms23042215. [PMID: 35216330 PMCID: PMC8879146 DOI: 10.3390/ijms23042215] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 02/15/2022] [Accepted: 02/15/2022] [Indexed: 01/08/2023] Open
Abstract
Selenium has been extensively evaluated clinically as a chemopreventive agent with variable results depending on the type and dose of selenium used. Selenium species are now being therapeutically evaluated as modulators of drug responses rather than as directly cytotoxic agents. In addition, recent data suggest an association between selenium base-line levels in blood and survival of patients with COVID-19. The major focus of this mini review was to summarize: the pathways of selenium metabolism; the results of selenium-based chemopreventive clinical trials; the potential for using selenium metabolites as therapeutic modulators of drug responses in cancer (clear-cell renal-cell carcinoma (ccRCC) in particular); and selenium usage alone or in combination with vaccines in the treatment of patients with COVID-19. Critical therapeutic targets and the potential role of different selenium species, doses, and schedules were discussed.
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12
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Ghanim BY, Ahmad MI, Abdallah QM, Qatouseh LA, Qinna NA. Modulation of NRF2/ARE pathway- and cell death-related genes during drug-induced liver injury. Hum Exp Toxicol 2021; 40:2223-2236. [PMID: 34219507 DOI: 10.1177/09603271211027947] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Transcriptional factor NRF2 is an emerging tool in reviewing mechanistic behavior of drug-specific injury pathways. Drug-induced liver injury (DILI) represents a major clinical concern that often manifests oxidative stress and cell death. Despite the pivotal role of NRF2 pathway in liver pathologies, it is questioned whether NRF2 activation or regulatory efficiency could be hindered in by the severity of DILI and progression of cell death. In this study, we evaluate NRF2 as a biomarker to DILI in comparison to severity of injury as well as explore stress mediating factors affecting Nrf2 expression. In vivo DILI model was established in C57BL/6 mice by acetaminophen (APAP) at different toxic doses, confirmed by dose-dependent liver pathological changes and accompanied with in vitro time- and dose-dependent depletion of GSH and SOD in isolated primary mouse hepatocytes. Increase in liver NRF2 translocation and cytosolic content was observed in 70 mg/kg APAP-treated mice. At this subtoxic dose, liver Nrf2 transcription was increased in mice by 18.3-fold, a prominent downregulation was seen in ARE (antioxidant response element) genes; Hmox1, Nqo1 and Glcm, and apoptotic Bcl2 regulating genes. In addition, upregulation in necrosis inducer Parp2 was associated to downregulation in Hmgb1. Collectively, expression of genes related to cell survival were regulated at mild APAP hepatotoxicity. By increasing APAP dose, hemorrhagic necrosis and impaired genetic transcription in both Nrf2 and several other genes were evident. In conclusion, NRF2/ARE system and cell death modulation is halted by the increase of chemical stress and found directly associated with DILI severity.
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Affiliation(s)
- B Y Ghanim
- University of Petra Pharmaceutical Center (UPPC), University of Petra, Amman, Jordan
| | - M I Ahmad
- Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Q M Abdallah
- University of Petra Pharmaceutical Center (UPPC), University of Petra, Amman, Jordan
- Department of Pharmacology and Biomedical Sciences, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan
| | - L A Qatouseh
- Department of Pharmacology and Biomedical Sciences, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan
| | - N A Qinna
- University of Petra Pharmaceutical Center (UPPC), University of Petra, Amman, Jordan
- Department of Pharmacology and Biomedical Sciences, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan
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13
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Jaeschke H, Akakpo JY, Umbaugh DS, Ramachandran A. Novel Therapeutic Approaches Against Acetaminophen-induced Liver Injury and Acute Liver Failure. Toxicol Sci 2021; 174:159-167. [PMID: 31926003 DOI: 10.1093/toxsci/kfaa002] [Citation(s) in RCA: 92] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Liver injury and acute liver failure caused by acetaminophen (APAP, N-acetyl-p-aminophenol, paracetamol) overdose is a significant clinical problem in most western countries. The only clinically approved antidote is N-acetylcysteine (NAC), which promotes the recovery of hepatic GSH. If administered during the metabolism phase, GSH scavenges the reactive metabolite N-acetyl-p-benzoquinone imine. More recently, it was shown that NAC can also reconstitute mitochondrial GSH levels and scavenge reactive oxygen/peroxynitrite and can support mitochondrial bioenergetics. However, NAC has side effects and may not be efficacious after high overdoses. Repurposing of additional drugs based on their alternate mechanisms of action could be a promising approach. 4-Methylpyrazole (4MP) was shown to be highly effective against APAP toxicity by inhibiting cytochrome P450 enzymes in mice and humans. In addition, 4MP is a potent c-Jun N-terminal kinase inhibitor expanding its therapeutic window. Calmangafodipir (CMFP) is a SOD mimetic, which is well tolerated in patients and has the potential to be effective after severe overdoses. Other drugs approved for humans such as metformin and methylene blue were shown to be protective in mice at high doses or at human therapeutic doses, respectively. Additional protective strategies such as enhancing antioxidant activities, Nrf2-dependent gene induction and autophagy activation by herbal medicine components are being evaluated. However, at this point, their mechanistic insight is limited, and the doses used are high. More rigorous mechanistic studies are needed to advance these herbal compounds. Nevertheless, based on recent studies, 4-methylpyrazole and calmangafodipir have realistic prospects to become complimentary or even alternative antidotes to NAC for APAP overdose.
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Affiliation(s)
- Hartmut Jaeschke
- Department of Pharmacology, Toxicology & Therapeutics, University of Kansas Medical Center, Kansas City, Kansas
| | - Jephte Y Akakpo
- Department of Pharmacology, Toxicology & Therapeutics, University of Kansas Medical Center, Kansas City, Kansas
| | - David S Umbaugh
- Department of Pharmacology, Toxicology & Therapeutics, University of Kansas Medical Center, Kansas City, Kansas
| | - Anup Ramachandran
- Department of Pharmacology, Toxicology & Therapeutics, University of Kansas Medical Center, Kansas City, Kansas
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DHA and Its Metabolites Have a Protective Role against Methylmercury-Induced Neurotoxicity in Mouse Primary Neuron and SH-SY5Y Cells. Int J Mol Sci 2021; 22:ijms22063213. [PMID: 33809931 PMCID: PMC8004243 DOI: 10.3390/ijms22063213] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/16/2021] [Accepted: 03/18/2021] [Indexed: 02/06/2023] Open
Abstract
The consumption of fish now involves a risk of methylmercury (MeHg) exposure but also provides the benefit of ω-3 polyunsaturated fatty acids (ω-3 PUFAs) such as docosahexaenoic acid (DHA). Some epidemiological studies have suggested that the intake of DHA can alleviate the neurotoxicity of MeHg, but the underlying mechanism is not known. Herein, we observed that pretreatment with 0.1–1 µM DHA suppressed MeHg-induced cytotoxicity in human neuroblastoma (SH-SY5Y) cells and mouse primary neuronal cells. These effects of DHA were canceled in the presence of the retinoid X receptor (RXR) antagonist UVI3003. An RXR agonist, bexarotene, suppressed the cytotoxicity of MeHg. DHA also suppressed the MeHg-induced production of reactive oxygen species (ROS) via an induction of antioxidant genes (catalase and SOD1). Pretreatment with DHA did not change the incorporation of MeHg. We showed previously that in the brain, the intake of DHA increased the level of 19,20-DHDP, which is the metabolite produced by cytochrome P450 and soluble epoxide hydrolase from DHA. In the present study, we observed that 19,20-DHDP also suppressed neurotoxicity from MeHg. These results indicate that DHA and its metabolites have a protective role in MeHg-induced neurotoxicity.
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15
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Supplemental Ascorbate Diminishes DNA Damage Yet Depletes Glutathione and Increases Acute Liver Failure in a Mouse Model of Hepatic Antioxidant System Disruption. Antioxidants (Basel) 2021; 10:antiox10030359. [PMID: 33673577 PMCID: PMC7997133 DOI: 10.3390/antiox10030359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/18/2021] [Accepted: 02/22/2021] [Indexed: 01/07/2023] Open
Abstract
Cellular oxidants are primarily managed by the thioredoxin reductase-1 (TrxR1)- and glutathione reductase (Gsr)-driven antioxidant systems. In mice having hepatocyte-specific co-disruption of TrxR1 and Gsr (TrxR1/Gsr-null livers), methionine catabolism sustains hepatic levels of reduced glutathione (GSH). Although most mice with TrxR1/Gsr-null livers exhibit long-term survival, ~25% die from spontaneous liver failure between 4- and 7-weeks of age. Here we tested whether liver failure was ameliorated by ascorbate supplementation. Following ascorbate, dehydroascorbate, or mock treatment, we assessed survival, liver histology, or hepatic redox markers including GSH and GSSG, redox enzyme activities, and oxidative damage markers. Unexpectedly, rather than providing protection, ascorbate (5 mg/mL, drinking water) increased the death-rate to 43%. In adults, ascorbate (4 mg/g × 3 days i.p.) caused hepatocyte necrosis and loss of hepatic GSH in TrxR1/Gsr-null livers but not in wildtype controls. Dehydroascorbate (0.3 mg/g i.p.) also depleted hepatic GSH in TrxR1/Gsr-null livers, whereas GSH levels were not significantly affected by either treatment in wildtype livers. Curiously, however, despite depleting GSH, ascorbate treatment diminished basal DNA damage and oxidative stress markers in TrxR1/Gsr-null livers. This suggests that, although ascorbate supplementation can prevent oxidative damage, it also can deplete GSH and compromise already stressed livers.
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16
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Rahman ZU, Al Kury LT, Alattar A, Tan Z, Alshaman R, Malik I, Badshah H, Uddin Z, Khan Khalil AA, Muhammad N, Khan S, Ali A, Shah FA, Li JB, Li S. Carveol a Naturally-Derived Potent and Emerging Nrf2 Activator Protects Against Acetaminophen-Induced Hepatotoxicity. Front Pharmacol 2021; 11:621538. [PMID: 33597885 PMCID: PMC7883019 DOI: 10.3389/fphar.2020.621538] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 12/23/2020] [Indexed: 12/12/2022] Open
Abstract
Acetaminophen (N-acetyl p-aminophenol or APAP) is used worldwide for its antipyretic and anti-inflammatory potential. However, APAP overdose sometimes causes severe liver damage. In this study, we elucidated the protective effects of carveol in liver injury, using molecular and in silico approaches. Male BALB/c mice were divided into two experimental cohorts, to identify the best dose and to further assess the role of carveol in the nuclear factor E2-related factor; nuclear factor erythroid 2; p45-related factor 2 (Nrf2) pathway. The results demonstrated that carveol significantly modulated the detrimental effects of APAP by boosting endogenous antioxidant mechanisms, such as nuclear translocation of Nrf2 gene, a master regulator of the downstream antioxidant machinery. Furthermore, an inhibitor of Nrf2, called all-trans retinoic acid (ATRA), was used, which exaggerated APAP toxicity, in addition to abrogating the protective effects of carveol; this effect was accompanied by overexpression of inflammatory mediators and liver = 2ltoxicity biomarkers. To further support our notion, we performed virtual docking of carveol with Nrf2-keap1 target, and the resultant drug-protein interactions validated the in vivo findings. Together, our findings suggest that carveol could activate the endogenous master antioxidant Nrf2, which further regulates the expression of downstream antioxidants, eventually ameliorating the APAP-induced inflammation and oxidative stress.
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Affiliation(s)
- Zaif Ur Rahman
- Shenzhen University Clinical Research Center for Neurological Diseases, Health Management Center, Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen University, Shenzhen, China.,Department of Pharmacy, Abdul Wali Khan University, Khyber Pakhtunkhwa, Pakistan
| | - Lina Tariq Al Kury
- College of Natural and Health Sciences, Zayed University, Abu Dhabi, United Arab Emirates
| | - Abdullah Alattar
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, University of Tabuk, Tabuk, Saudi Arabia
| | - Zhen Tan
- Shenzhen University Clinical Research Center for Neurological Diseases, Health Management Center, Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen University, Shenzhen, China
| | - Reem Alshaman
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, University of Tabuk, Tabuk, Saudi Arabia
| | - Imran Malik
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
| | - Haroon Badshah
- Department of Pharmacy, Abdul Wali Khan University, Khyber Pakhtunkhwa, Pakistan
| | - Zia Uddin
- Department of Pharmacy, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Pakistan
| | - Atif Ali Khan Khalil
- Department of Biological Sciences, National University of Medical Sciences, Rawalpindi, Pakistan
| | - Naveed Muhammad
- Department of Pharmacy, Abdul Wali Khan University, Khyber Pakhtunkhwa, Pakistan
| | - Saifullah Khan
- Department of Microbiology and Biotechnology, Abasyn University Peshawar, Khyber Pakhtunkhwa, Pakistan
| | - Amjad Ali
- Department of Botany, University of Malakand, Khyber Pakhtunkhwa, Pakistan
| | - Fawad Ali Shah
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
| | - Jing Bo Li
- Shenzhen University Clinical Research Center for Neurological Diseases, Health Management Center, Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen University, Shenzhen, China
| | - Shupeng Li
- State Key Laboratory of Oncogenomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen, China
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17
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Gorczyca L, Du J, Bircsak KM, Wen X, Vetrano AM, Aleksunes LM. Low oxygen tension differentially regulates the expression of placental solute carriers and ABC transporters. FEBS Lett 2020; 595:811-827. [PMID: 32978975 DOI: 10.1002/1873-3468.13937] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/27/2020] [Accepted: 09/03/2020] [Indexed: 01/12/2023]
Abstract
Low oxygen concentration, or hypoxia, is an important physiological regulator of placental function including chemical disposition. Here, we compared the ability of low oxygen tension to alter the expression of solute carriers (SLC) and ABC transporters in two human placental models, namely BeWo cells and term placental explants. We found that exposure to low oxygen concentration differentially regulates transporter expression in BeWo cells, including downregulation of ENT1, OATP4A1, OCTN2, BCRP, and MRP2/3/5, and upregulation of CNT1, OAT4, OATP2B1, SERT, SOAT, and MRP1. Similar upregulation of MRP1 and downregulation of MRP5 and BCRP were observed in explants, whereas uptake transporters were decreased or unchanged. Furthermore, a screening of transcriptional regulators of transporters revealed that hypoxia leads to a decrease in the mRNA levels of aryl hydrocarbon receptor, nuclear factor erythroid 2-related factor 2, and retinoid x receptor alpha in both human placental models. These data suggest that transporter expression is differentially regulated by oxygen concentration across experimental human placental models.
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Affiliation(s)
- Ludwik Gorczyca
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ, USA.,Joint Graduate Program in Toxicology, Rutgers University, Piscataway, NJ, USA
| | - Jianyao Du
- China Pharmaceutical University, Nanjing, China
| | - Kristin M Bircsak
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ, USA.,Joint Graduate Program in Toxicology, Rutgers University, Piscataway, NJ, USA
| | - Xia Wen
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ, USA
| | - Anna M Vetrano
- Division of Neonatology, Department of Pediatrics, Robert Wood Johnson Medical School, Rutgers University, New Brunswick, NJ, USA
| | - Lauren M Aleksunes
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, Piscataway, NJ, USA.,Rutgers Center for Lipid Research, New Jersey Institute for Food, Nutrition, and Health, Rutgers University, New Brunswick, NJ, USA.,Environmental and Occupational Health Sciences Institute, Piscataway, NJ, USA
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18
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Dandelion polyphenols protect against acetaminophen-induced hepatotoxicity in mice via activation of the Nrf-2/HO-1 pathway and inhibition of the JNK signaling pathway. Chin J Nat Med 2020; 18:103-113. [PMID: 32172946 DOI: 10.1016/s1875-5364(20)30011-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Indexed: 12/11/2022]
Abstract
We investigated the liver protective activity of dandelion polyphenols (DP) against acetaminophen (APAP; Paracetamol)-induced hepatotoxicity. Mice were acclimated for 1 week and randomly divided into the following groups (n = 9 per group): Control, APAP, APAP + DP (100 mg·kg-1), APAP + DP (200 mg·kg-1), and APAP + DP (400 mg·kg-1) groups. Mice were pretreated with DP (100, 200, and 400 mg·kg-1) by oral gavage for 7 d before being treated with 350 mg·kg-1 APAP for 24 h to induced hepatotoxicity. Severe liver injury was observed, and hepatotoxicity was analyzed after 24 h by evaluation of biochemical markers, protein expressions levels, and liver histopathology. Pretreatment with DP was able to restore serum liver characteristics (aspartate transaminase, AST; alanine aminotransferase, ALT; alkaline phosphatase, AKP), improve redox imbalance (superoxide dismutase, SOD; glutathione, GSH; malondialdehyde, MDA), and decrease inflammatory factors (tumor necrosis factor-α, TNF-α; interleukin-1β, IL-1β). Pretreatment with DP also significantly inhibited the expression levels of nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). Furthermore, DP pretreatment could inhibit the apoptosis of liver cells caused by APAP through up-regulation of Bcl-2 and down-regulation of Bax and caspase-9 protein. DP also down-regulated p-JNK protein expression levels to inhibit APAP-induced mitochondrial oxidative stress and up-regulated the expression of Nrf-2 and its target gene HO-1. The histopathological staining demonstrated that DP pretreatment could inhibit APAP-induced hepatocyte infiltration, congestion, and necrosis. Our results demonstrate that DP pretreatment could protect against APAP-induced hepatic injury by activating the Nrf-2/HO-1 pathway and inhibition of the intrinsic apoptosis pathway.
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19
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Anticholestatic Effect of Bardoxolone Methyl on Hepatic Ischemia-reperfusion Injury in Rats. Transplant Direct 2020; 6:e584. [PMID: 32766432 PMCID: PMC7371100 DOI: 10.1097/txd.0000000000001017] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 05/04/2020] [Indexed: 11/25/2022] Open
Abstract
Supplemental Digital Content is available in the text. Background. Cholestasis is a sign of hepatic ischemia-reperfusion injury (IRI), which is caused by the dysfunction of hepatocyte membrane transporters (HMTs). As transcriptional regulation of HMTs during oxidative stress is mediated by nuclear factor erythroid 2-related factor 2, we hypothesized that bardoxolone methyl (BARD), a nuclear factor erythroid 2-related factor 2 activator, can mitigate cholestasis associated with hepatic IRI. Methods. BARD (2 mg/kg) or the vehicle was intravenously administered into rats immediately before sham surgery, 60 min of ischemia (IR60), or 90 min of ischemia (IR90); tissue and blood samples were collected after 24 h to determine the effect on key surrogate markers of bile metabolism and expression of HMT genes (Mrp (multidrug resistance-associated protein) 2, bile salt export pump, Mrp3, sodium-taurocholate cotransporter, and organic anion-transporting polypeptide 1). Results. Significantly decreased serum bile acids were detected upon BARD administration in the IR60 group but not in the IR90 group. Hepatic tissue analyses revealed that BARD administration increased mRNA levels of Mrp2 and Mrp3 in the IR60 group, and it decreased those of bile salt export pump in the IR90 group. Protein levels of multidrug resistance–associated protein 2, multidrug resistance–associated protein 3, and sodium-taurocholate cotransporter were higher in the IR90 group relative to those in the sham or IR60 groups, wherein the difference was notable only when BARD was administered. Immunohistochemical and morphometric analyses showed that the area of expression for multidrug resistance–associated protein 2 and for sodium-taurocholate cotransporter was larger in the viable tissues than in the necrotic area, and the area for multidrug resistance–associated protein 3 was smaller; these differences were notable upon BARD administration. Conclusions. BARD may have the potential to change HMT regulation to mitigate cholestasis in hepatic IRI.
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20
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Scialis RJ, Ghanem CI, Manautou JE. The modulation of transcriptional expression and inhibition of multidrug resistance associated protein 4 (MRP4) by analgesics and their primary metabolites. Curr Res Toxicol 2020; 1:34-41. [PMID: 34345835 PMCID: PMC8320619 DOI: 10.1016/j.crtox.2020.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 04/02/2020] [Accepted: 04/24/2020] [Indexed: 11/17/2022] Open
Abstract
During the course of a toxic challenge, changes in gene expression can manifest such as induction of metabolizing enzymes as a compensatory detoxification response. We currently report that a single 400 mg/kg acetaminophen (APAP) dose to C57BL/6J mice led to an increase in multidrug resistance-associated (Mrp) 4 (Abcc4) mRNA 12 h after administration. Alanine aminotransferase, as a marker of liver injury, was also elevated indicating hepatotoxicity had occurred. Therefore, induction of Mrp4 mRNA was likely attributable to APAP-induced liver injury. Mrp4 has been shown to be upregulated during oxidative stress, and it is well-established that APAP overdose causes oxidative stress due to depletion of glutathione. Given the importance of Mrp4 upregulation as an adaptive response during cholestatic and oxidative liver injury, we next investigated the extent by which human MRP4 can be inhibited by the analgesics, APAP, diclofenac (DCF), and their metabolites. Using an in vitro assay with inside out human MRP4 vesicles, we determined that APAP-cysteine inhibited MRP4-mediated transport of leukotriene C4 with an apparent IC50 of 125 μM. APAP-glutathione also attenuated MRP4 activity though it achieved only 28% inhibition at 300 μM. Diclofenac acyl glucuronide (DCF-AG) inhibited MRP4 transport by 34% at 300 μM. The MRP4 in vitro inhibition occurs at APAP-cysteine and DCF-AG concentrations seen in vivo after toxic doses of APAP or DCF in mice, hence the findings are important given the role that Mrp4 serves as a compensatory response during oxidative stress following toxic challenge. Following 400 mg/kg APAP in mice, mean ALT 12 hours post-dose was 1,140 U/L A statistically significant increase in Mrp4 mRNA was observed 12 hours post-dose APAP-CYS inhibited human MRP4 transport of LTC4 with an IC50 = 125 μM (Ki = 122 μM) APAP-GSH decreased MRP4 transport by 29% inhibition at 300 μM APAP, APAP-GLU, APAP-NAC, and APAP-SUL did not exhibit significant MRP4 inhibition
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Key Words
- ALT, alanine aminotransferase
- AMP, adenosine monophosphate
- APAP, acetaminophen
- APAP-CYS, acetaminophen cysteine
- APAP-GLU, acetaminophen glucuronide
- APAP-NAC, acetaminophen N-acetylcysteine
- APAP-SUL, acetaminophen sulfate
- ATP, adenosine triphosphate
- Acetaminophen
- DCF, diclofenac
- DCF-AG, diclofenac acyl glucuronide
- Diclofenac
- Fmo, flavin containing monooxygenase
- IS, internal standard
- Inhibition
- LTC4, leukotriene C4
- MRP, multidrug resistance-associated protein
- MRP4
- Metabolite
- OH-DCF, 4′-hydroxy diclofenac
- PGE2, prostaglandin E2
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Affiliation(s)
| | | | - José E. Manautou
- Corresponding author at: University of Connecticut, Dept. of Pharmaceutical Sciences, 69 North Eagleville Road, Storrs, CT 06269-3092, USA.
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21
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Human multidrug resistance protein 4 (MRP4) is a cellular efflux transporter for paracetamol glutathione and cysteine conjugates. Arch Toxicol 2020; 94:3027-3032. [PMID: 32472168 PMCID: PMC7415487 DOI: 10.1007/s00204-020-02793-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 05/20/2020] [Indexed: 11/02/2022]
Abstract
Paracetamol (acetaminophen, APAP) overdose is a leading cause of acute drug-induced liver failure. APAP hepatotoxicity is mediated by the reactive metabolite N-acetyl-p-benzoquinone imine (NAPQI). NAPQI is inactivated by conjugation with glutathione (GSH) to APAP-GSH, which is further converted into its cysteine derivative APAP-CYS. Before necrosis of hepatocytes occurs, APAP-CYS is measurable in plasma of the affected patient and it has been proposed as an early biomarker of acetaminophen toxicity. APAP-GSH and APAP-CYS can be extruded by hepatocytes, but the transporters involved are unknown. In this study we examined whether ATP-binding cassette (ABC) transporters play a role in the cellular efflux of APAP, APAP-GSH, and APAP-CYS. The ABC transport proteins P-gp/ABCB1, BSEP/ABCB11, BCRP/ABCG2, and MRP/ABCC1-5 were overexpressed in HEK293 cells and membrane vesicles were produced. Whereas P-gp, BSEP, MRP3, MRP5, and BCRP did not transport any of the compounds, uptake of APAP-GSH was found for MRP1, MRP2 and MRP4. APAP-CYS appeared to be a substrate of MRP4 and none of the ABC proteins transported APAP. The results suggest that the NAPQI metabolite APAP-CYS can be excreted into plasma by MRP4, where it could be a useful biomarker for APAP exposure and toxicity. Characterization of the cellular efflux of APAP-CYS is important for its development as a biomarker, because plasma concentrations might be influenced by drug-transporter interactions and upregulation of MRP4.
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22
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Fragoulis A, Schenkel J, Herzog M, Schellenberg T, Jahr H, Pufe T, Trautwein C, Kensler TW, Streetz KL, Wruck CJ. Nrf2 Ameliorates DDC-Induced Sclerosing Cholangitis and Biliary Fibrosis and Improves the Regenerative Capacity of the Liver. Toxicol Sci 2020; 169:485-498. [PMID: 30825315 DOI: 10.1093/toxsci/kfz055] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The Nrf2 pathway protects against oxidative stress and induces regeneration of various tissues. Here, we investigated whether Nrf2 protects from sclerosing cholangitis and biliary fibrosis and simultaneously induces liver regeneration. Diet containing 3,5-diethoxycarbonyl-1,4-dihydrocollidine (DDC) was fed to Nrf2-KO mice (Nrf2-/-), mice with liver-specific hyperactivated Nrf2 (HKeap1-/-) and wild-type (WT) littermates to induce cholangitis, liver fibrosis, and oval cell expansion. HKeap1-/--mice were protected from almost all DDC-induced injury compared with WT and Nrf2-/-. Liver injury in Nrf2-/- and WT mice was mostly similar, albeit Nrf2-/- suffered more from DDC diet as seen for several parameters. Nrf2 activity was especially important for the expression of the hepatic efflux transporters Abcg2 and Abcc2-4, which are involved in hepatic toxin elimination. Surprisingly, cell proliferation was more enhanced in Nrf2-/-- and HKeap1-/--mice compared with WT. Interestingly, Nrf2-/--mice failed to sufficiently activate oval cell expansion after DDC treatment and showed almost no resident oval cell population under control conditions. The resident oval cell population of untreated HKeap1-/--mice was increased and DDC treatment resulted in a stronger oval cell expansion compared with WT. We provide evidence that Nrf2 activation protects from DDC-induced sclerosing cholangitis and biliary fibrosis. Moreover, our data establish a possible role of Nrf2 in oval cell expansion.
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Affiliation(s)
- Athanassios Fragoulis
- Department of Anatomy and Cell Biology.,Molecular Tumor Biology, Department of General, Visceral and Transplantation Surgery
| | | | | | | | | | | | - Christian Trautwein
- Department of Medicine III, Medical Faculty, Uniklinik RWTH Aachen University, 52074 Aachen, Germany
| | - Thomas W Kensler
- Department of Environmental Health Sciences, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205
| | - Konrad L Streetz
- Department of Medicine III, Medical Faculty, Uniklinik RWTH Aachen University, 52074 Aachen, Germany
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23
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Chen Y, Liu K, Zhang J, Hai Y, Wang P, Wang H, Liu Q, Wong CC, Yao J, Gao Y, Liao Y, Tang X, Wang XJ. c-Jun NH 2 -Terminal Protein Kinase Phosphorylates the Nrf2-ECH Homology 6 Domain of Nuclear Factor Erythroid 2-Related Factor 2 and Downregulates Cytoprotective Genes in Acetaminophen-Induced Liver Injury in Mice. Hepatology 2020; 71:1787-1801. [PMID: 31945188 PMCID: PMC7318587 DOI: 10.1002/hep.31116] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 12/18/2019] [Indexed: 12/30/2022]
Abstract
BACKGROUND AND AIMS Acetaminophen (APAP) overdose induces severe liver injury and hepatic failure. While the activation of c-Jun NH2 -terminal kinase (JNK) has been implicated as a mechanism in APAP-induced liver injury, the hepatic defense system controlled by nuclear factor erythroid 2-related factor 2 (Nrf2) plays a central role in the mitigation of APAP toxicity. However, the link between the two signaling pathways in APAP-induced liver injury (AILI) remains unclear. APPROACH AND RESULTS In this study, we demonstrated that the activation of JNK in mouse liver following exposure to APAP was correlated with the phosphorylation of Nrf2 and down-regulation of the antioxidant response element (ARE)-driven genes, NAD(P)H:quinone dehydrogenase 1, glutathione S-transferase α3, glutathione S-transferase M1, glutathione S-transferase M5, and aldo-keto reductase 1C. The JNK inhibitor, SP600125, or knockdown of JNK by infection of adenovirus expressing JNK small interfering RNA, ameliorated the APAP induced liver toxicity, and inhibited the phosphorylation of Nrf2 and down-regulation of detoxifying enzymes by stabilizing the transcription factor. Mechanistically, JNK antagonized Nrf2- and ARE-driven gene expression in a Kelch-like ECH-associated protein 1-independent manner. Biochemical analysis revealed that phosphorylated JNK (P-JNK) directly interacted with the Nrf2-ECH homology (Neh) 1 domain of Nrf2 and phosphorylated the serine-aspartate-serine motif 1 (SDS1) region in the Neh6 domain of Nrf2. CONCLUSIONS Mass spectrometric analysis identified serine 335 in the SDS1 region of mNrf2 as the major phosphorylation site for modulation of Nrf2 ubiquitylation by P-JNK. This study demonstrates that Nrf2 is a target of P-JNK in AILI. Our finding may provide a strategy for the treatment of AILI.
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Affiliation(s)
- Yiping Chen
- Department of Pharmacology and Cancer Institute of the Second Affiliated HospitalZhejiang University School of MedicineZhejiang UniversityHangzhouPR China
| | - Kaihua Liu
- Department of Pharmacology and Cancer Institute of the Second Affiliated HospitalZhejiang University School of MedicineZhejiang UniversityHangzhouPR China
| | - Jingwen Zhang
- Department of Pharmacology and Cancer Institute of the Second Affiliated HospitalZhejiang University School of MedicineZhejiang UniversityHangzhouPR China
| | - Yan Hai
- Department of Biochemistry and Department of Thoracic SurgeryThe First Affiliated HospitalZhejiang University School of MedicineZhejiang UniversityHangzhouPR China
| | - Peng Wang
- Department of Pharmacology and Cancer Institute of the Second Affiliated HospitalZhejiang University School of MedicineZhejiang UniversityHangzhouPR China
| | - Hongyan Wang
- Department of Biochemistry and Department of Thoracic SurgeryThe First Affiliated HospitalZhejiang University School of MedicineZhejiang UniversityHangzhouPR China
| | - Qiuyan Liu
- Department of Pharmacology and Cancer Institute of the Second Affiliated HospitalZhejiang University School of MedicineZhejiang UniversityHangzhouPR China
| | - Catherine C.L. Wong
- Center for Precision Medicine Multi‐Omics ResearchPeking University Health Science CenterBeijingChina,State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking UniversityBeijingChina,National Center for Protein Science (Shanghai)Institute of Biochemistry and Cell BiologyShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghaiChina
| | - Jun Yao
- Department of Pharmacology and Cancer Institute of the Second Affiliated HospitalZhejiang University School of MedicineZhejiang UniversityHangzhouPR China
| | - Yang Gao
- Department of Biochemistry and Department of Thoracic SurgeryThe First Affiliated HospitalZhejiang University School of MedicineZhejiang UniversityHangzhouPR China
| | - Yijiao Liao
- Department of Biochemistry and Department of Thoracic SurgeryThe First Affiliated HospitalZhejiang University School of MedicineZhejiang UniversityHangzhouPR China
| | - Xiuwen Tang
- Department of Biochemistry and Department of Thoracic SurgeryThe First Affiliated HospitalZhejiang University School of MedicineZhejiang UniversityHangzhouPR China
| | - Xiu Jun Wang
- Department of Pharmacology and Cancer Institute of the Second Affiliated HospitalZhejiang University School of MedicineZhejiang UniversityHangzhouPR China
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24
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Li LZ, Zhao ZM, Zhang L, He J, Zhang TF, Guo JB, Yu L, Zhao J, Yuan XY, Peng SQ. Atorvastatin induces mitochondrial dysfunction and cell apoptosis in HepG2 cells via inhibition of the Nrf2 pathway. J Appl Toxicol 2019; 39:1394-1404. [PMID: 31423616 DOI: 10.1002/jat.3825] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 04/30/2019] [Accepted: 04/30/2019] [Indexed: 12/27/2022]
Abstract
Atorvastatin (ATO) is a 3-hydroxy-3-methylglutaryl-CoA reductase inhibitor widely used to treat hypercholesterolemia. However, clinical application is limited by potential hepatotoxicity. Nuclear factor-erythroid 2-related factor 2 (Nrf2) is a master regulator of cellular antioxidants, and oxidative stress is implicated in statin-induced liver injury. This study investigated mechanisms of ATO-induced hepatotoxicity and potential mitigation by Nrf2 signaling. ATO reduced Nrf2 and antioxidant enzyme superoxide dismutase-2 (SOD2) expression in human hepatocarcinoma HepG2 cells. ATO also induced concentration-dependent HepG2 cell toxicity, reactive oxygen species (ROS) accumulation, and mitochondrial dysfunction as evidenced by decreased mitochondrial membrane potential (MMP) and cellular adenosine triphosphate (ATP). Further, ATO induced mitochondria-dependent apoptosis as indicated by increased Bax/Bcl-2 ratio, cleaved caspase-3, mitochondrial cytochrome c release and Annexin V-fluorescein isothiocyanate/propidium iodide staining. Tert-butylhydroquinone enhanced Nrf2 and SOD2 expression, and partially reversed ATO-induced cytotoxicity, ROS accumulation, MMP reduction, ATP depletion and mitochondria-dependent apoptosis. In conclusion, the present study demonstrates that ATO induces mitochondrial dysfunction and cell apoptosis in HepG2 cells, at least in part, via inhibition of the Nrf2 pathway. Nrf2 pathway activation is a potential prevention for ATO-induced liver injury.
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Affiliation(s)
- Li-Zhong Li
- Academy of Military Medical Sciences, Beijing, People's Republic of China.,PLA Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Zeng-Ming Zhao
- PLA Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Li Zhang
- PLA Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Jun He
- PLA Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Ting-Fen Zhang
- PLA Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Jia-Bin Guo
- PLA Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Lin Yu
- Academy of Military Medical Sciences, Beijing, People's Republic of China.,PLA Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Jun Zhao
- PLA Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Xiao-Yan Yuan
- PLA Center for Disease Control and Prevention, Beijing, People's Republic of China
| | - Shuang-Qing Peng
- PLA Center for Disease Control and Prevention, Beijing, People's Republic of China
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25
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Ghanem CI, Manautou JE. Modulation of Hepatic MRP3/ABCC3 by Xenobiotics and Pathophysiological Conditions: Role in Drug Pharmacokinetics. Curr Med Chem 2019; 26:1185-1223. [PMID: 29473496 DOI: 10.2174/0929867325666180221142315] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 01/17/2018] [Accepted: 02/05/2018] [Indexed: 12/13/2022]
Abstract
Liver transporters play an important role in the pharmacokinetics and disposition of pharmaceuticals, environmental contaminants, and endogenous compounds. Among them, the family of ATP-Binding Cassette (ABC) transporters is the most important due to its role in the transport of endo- and xenobiotics. The ABCC sub-family is the largest one, consisting of 13 members that include the cystic fibrosis conductance regulator (CFTR/ABCC7); the sulfonylurea receptors (SUR1/ABCC8 and SUR2/ABCC9) and the multidrug resistanceassociated proteins (MRPs). The MRP-related proteins can collectively confer resistance to natural, synthetic drugs and their conjugated metabolites, including platinum-containing compounds, folate anti-metabolites, nucleoside and nucleotide analogs, among others. MRPs can be also catalogued into "long" (MRP1/ABCC1, -2/C2, -3/C3, -6/C6, and -7/C10) and "short" (MRP4/C4, -5/C5, -8/C11, -9/C12, and -10/C13) categories. While MRP2/ABCC2 is expressed in the canalicular pole of hepatocytes, all others are located in the basolateral membrane. In this review, we summarize information from studies examining the changes in expression and regulation of the basolateral hepatic transporter MPR3/ABCC3 by xenobiotics and during various pathophysiological conditions. We also focus, primarily, on the consequences of such changes in the pharmacokinetic, pharmacodynamic and/or toxicity of different drugs of clinical use transported by MRP3.
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Affiliation(s)
- Carolina I Ghanem
- Instituto de Investigaciones Farmacologicas (ININFA), Facultad de Farmacia y Bioquimica. CONICET. Universidad de Buenos Aires, Buenos Aires, Argentina.,Catedra de Fisiopatologia. Facultad de Farmacia y Bioquimica. Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Jose E Manautou
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT, United States
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26
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Wu S, Lu H, Bai Y. Nrf2 in cancers: A double-edged sword. Cancer Med 2019; 8:2252-2267. [PMID: 30929309 PMCID: PMC6536957 DOI: 10.1002/cam4.2101] [Citation(s) in RCA: 272] [Impact Index Per Article: 54.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 02/21/2019] [Accepted: 02/26/2019] [Indexed: 12/11/2022] Open
Abstract
The Nrf2/Keap1 pathway is an important signaling cascade responsible for the resistance of oxidative damage induced by exogenous chemicals. It maintains the redox homeostasis, exerts anti-inflammation and anticancer activity by regulating its multiple downstream cytoprotective genes, thereby plays a vital role in cell survival. Interestingly, in recent years, accumulating evidence suggests that Nrf2 has a contradictory role in cancers. Aberrant activation of Nrf2 is associated with poor prognosis. The constitutive activation of Nrf2 in various cancers induces pro-survival genes and promotes cancer cell proliferation by metabolic reprogramming, repression of cancer cell apoptosis, and enhancement of self-renewal capacity of cancer stem cells. More importantly, Nrf2 is proved to contribute to the chemoresistance and radioresistance of cancer cells as well as inflammation-induced carcinogenesis. A number of Nrf2 inhibitors discovered for cancer treatment were reviewed in this report. These provide a new strategy that targeting Nrf2 could be a promising therapeutic approach against cancer. This review aims to summarize the dual effects of Nrf2 in cancer, revealing its function both in cancer prevention and inhibition, to further discover novel anticancer treatment.
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Affiliation(s)
- Shijia Wu
- Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Hong Lu
- Department of Laboratory Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yongheng Bai
- Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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27
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Kim J, Martin A, Yee J, Fojut L, Geurts AM, Oshima K, Zimmerman MA, Hong JC. Effects of Hepatic Ischemia-Reperfusion Injuries and NRF2 on Transcriptional Activities of Bile Transporters in Rats. J Surg Res 2018; 235:73-82. [PMID: 30691853 DOI: 10.1016/j.jss.2018.09.057] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 09/07/2018] [Accepted: 09/19/2018] [Indexed: 12/15/2022]
Abstract
BACKGROUND The effect of hepatic ischemia-reperfusion injury (IRI) on bile transporter (BT) gene expression is unknown. We hypothesized that abnormal expression of BTs during hepatic IRI is dependent on nuclear factor erythroid 2-related factor 2 (NRF2), which contributes to the cholestasis after reperfusion. METHODS Sham surgery and short (60 min) or long (90 min) periods of warm ischemia time (WIT) with or without reperfusion for 24 h were applied to wild-type Sprague-Dawley rats and Nrf2 knockout rats (n = 5 per group). At each stage of IRI, the serum levels of aminotransferase, total bilirubin, and bile acids were measured. In addition, hepatic tissue was sampled to determine the histologic score of IRI (Suzuki score), measure adenosine triphosphate (ATP), and identify the quantitative real-time polymerase chain reactions of BTs (Oatp1, Ntcp, Mrp2, Bsep, and Mrp3). RESULTS In short periods of WIT, BT expression increased during the ischemia stage and returned to the baseline after reperfusion. However, in long periods of WIT, BT expression did not increase after ischemia and decreased further after reperfusion. Short WIT did not increase BT expression in Nrf2 knockout animals. The level of BT expression was correlated with the Suzuki score, the serum levels of aminotransferase, bilirubin, and bile acids, and tissue ATP level. Stepwise multiple regression analysis derived equations to predict the Suzuki score (R2 = 76.8, P < 0.001), serum total bilirubin (R2 = 61.2, P < 0.001), and tissue ATP (R2 = 61.1, P < 0.001). CONCLUSIONS Short WIT induces the transcriptional activities of BT, whereas long WIT depresses them, and the effect was blunted by Nrf2 knockout status. BT expression can be considered a surrogate marker for hepatic IRI.
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Affiliation(s)
- Joohyun Kim
- Division of Transplant Surgery, Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Alicia Martin
- Division of Transplant Surgery, Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Jennifer Yee
- Division of Transplant Surgery, Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Lynn Fojut
- Division of Transplant Surgery, Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Aron M Geurts
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Kiyoko Oshima
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Michael A Zimmerman
- Division of Transplant Surgery, Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Johnny C Hong
- Division of Transplant Surgery, Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin.
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28
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Heruth DP, Shortt K, Zhang N, Li DY, Zhang LQ, Qing Ye S. Genetic Association of Single Nucleotide Polymorphisms with Acetaminophen-Induced Hepatotoxicity. J Pharmacol Exp Ther 2018; 367:95-100. [PMID: 30076262 DOI: 10.1124/jpet.118.248583] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Accepted: 08/01/2018] [Indexed: 12/15/2022] Open
Abstract
Acetaminophen is commonly used to reduce pain and fever. Unfortunately, overdose of acetaminophen is a leading cause of acute liver injury and failure in many developed countries. The majority of acetaminophen is safely metabolized in the liver and excreted in the urine; however, a small percentage is converted to the highly reactive N-acetyl-p-benzoquinone imine (NAPQI). At therapeutic doses, NAPQI is inactivated by glutathione S-transferases, but at toxic levels, excess NAPQI forms reactive protein adducts that lead to hepatotoxicity. Individual variability in the response to both therapeutic and toxic levels of acetaminophen suggests a genetic component is involved in acetaminophen metabolism. In this review, we evaluate the genetic association studies that have identified 147 single nucleotide polymorphisms linked to acetaminophen-induced hepatotoxicity. The identification of novel genetic markers for acetaminophen-induced hepatotoxicity provides a rich resource for further evaluation and may lead to improved prognosis, prevention, and treatment.
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Affiliation(s)
- Daniel P Heruth
- Division of Experimental and Translational Genetics, Department of Pediatrics, Children's Mercy (D.P.H., K.S., N.Z., L.Q.Z., S.Q.Y.), Division of Gastroenterology, Department of Pediatrics, Children's Mercy (N.Z., D.-Y.L.), and Department of Biomedical and Health Informatics (K.S., S.Q.Y.), University of Missouri Kansas City School of Medicine, Kansas City, Missouri; Division of Cell Biology and Biophysics, University of Missouri Kansas City School of Biological Sciences, Kansas City, Missouri (K.S.); and Department of Pediatrics, Tangdu Hospital, The Fourth Military Medical University, Xian, China (N.Z.)
| | - Katherine Shortt
- Division of Experimental and Translational Genetics, Department of Pediatrics, Children's Mercy (D.P.H., K.S., N.Z., L.Q.Z., S.Q.Y.), Division of Gastroenterology, Department of Pediatrics, Children's Mercy (N.Z., D.-Y.L.), and Department of Biomedical and Health Informatics (K.S., S.Q.Y.), University of Missouri Kansas City School of Medicine, Kansas City, Missouri; Division of Cell Biology and Biophysics, University of Missouri Kansas City School of Biological Sciences, Kansas City, Missouri (K.S.); and Department of Pediatrics, Tangdu Hospital, The Fourth Military Medical University, Xian, China (N.Z.)
| | - Nini Zhang
- Division of Experimental and Translational Genetics, Department of Pediatrics, Children's Mercy (D.P.H., K.S., N.Z., L.Q.Z., S.Q.Y.), Division of Gastroenterology, Department of Pediatrics, Children's Mercy (N.Z., D.-Y.L.), and Department of Biomedical and Health Informatics (K.S., S.Q.Y.), University of Missouri Kansas City School of Medicine, Kansas City, Missouri; Division of Cell Biology and Biophysics, University of Missouri Kansas City School of Biological Sciences, Kansas City, Missouri (K.S.); and Department of Pediatrics, Tangdu Hospital, The Fourth Military Medical University, Xian, China (N.Z.)
| | - Ding-You Li
- Division of Experimental and Translational Genetics, Department of Pediatrics, Children's Mercy (D.P.H., K.S., N.Z., L.Q.Z., S.Q.Y.), Division of Gastroenterology, Department of Pediatrics, Children's Mercy (N.Z., D.-Y.L.), and Department of Biomedical and Health Informatics (K.S., S.Q.Y.), University of Missouri Kansas City School of Medicine, Kansas City, Missouri; Division of Cell Biology and Biophysics, University of Missouri Kansas City School of Biological Sciences, Kansas City, Missouri (K.S.); and Department of Pediatrics, Tangdu Hospital, The Fourth Military Medical University, Xian, China (N.Z.)
| | - Li Q Zhang
- Division of Experimental and Translational Genetics, Department of Pediatrics, Children's Mercy (D.P.H., K.S., N.Z., L.Q.Z., S.Q.Y.), Division of Gastroenterology, Department of Pediatrics, Children's Mercy (N.Z., D.-Y.L.), and Department of Biomedical and Health Informatics (K.S., S.Q.Y.), University of Missouri Kansas City School of Medicine, Kansas City, Missouri; Division of Cell Biology and Biophysics, University of Missouri Kansas City School of Biological Sciences, Kansas City, Missouri (K.S.); and Department of Pediatrics, Tangdu Hospital, The Fourth Military Medical University, Xian, China (N.Z.)
| | - Shui Qing Ye
- Division of Experimental and Translational Genetics, Department of Pediatrics, Children's Mercy (D.P.H., K.S., N.Z., L.Q.Z., S.Q.Y.), Division of Gastroenterology, Department of Pediatrics, Children's Mercy (N.Z., D.-Y.L.), and Department of Biomedical and Health Informatics (K.S., S.Q.Y.), University of Missouri Kansas City School of Medicine, Kansas City, Missouri; Division of Cell Biology and Biophysics, University of Missouri Kansas City School of Biological Sciences, Kansas City, Missouri (K.S.); and Department of Pediatrics, Tangdu Hospital, The Fourth Military Medical University, Xian, China (N.Z.)
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29
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Ning C, Gao X, Wang C, Kong Y, Liu Z, Sun H, Sun P, Huo X, Ma X, Meng Q, Liu K. Ginsenoside Rg1 protects against acetaminophen-induced liver injury via activating Nrf2 signaling pathway in vivo and in vitro. Regul Toxicol Pharmacol 2018; 98:58-68. [PMID: 30030101 DOI: 10.1016/j.yrtph.2018.07.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 06/25/2018] [Accepted: 07/16/2018] [Indexed: 12/11/2022]
Abstract
Acetaminophen (APAP) is a worldwide used drug for treating fever and pain. However, APAP overdose is the leading cause of drug-induced liver injury. The purpose of the current study is to evaluate the hepatoprotective effect of ginsenoside Rg1 (Rg1), the main pharmacologically active compounds of Panax ginseng, against APAP-induced acute liver injury, and further to elucidate the involvement of Nrf2 signaling pathway by in vivo and in vitro experiments. Male C57BL/6 mice were treated with Rg1 for 3 days before injection of APAP. Serum and liver tissue samples were collected 6 h later. The results indicated that Rg1 significantly attenuated APAP-induced hepatotoxicity and oxidative stress in a dose-dependent manner. Rg1 effectively enhanced antioxidant and detoxification capacity, which is largely dependent on up-regulating Nrf2 nuclear translocation, reducing Keap1 protein expression and up-regulating Nrf2 target genes including GCLC, GCLM, HO-1, NQO1, Ugt1a1, Ugt1a6, Ugt2b1, Sult2a1, Mrp2, Mrp3 and Mrp4. Furthermore, Rg1 repressed the activities of Cyp2e1, Cyp3a11, Cyp1a2, which are important enzymes in the formation of APAP toxic metabolite N-acetyl-p-benzoquinone imine. However, the changes in transporters and enzymes, as well as ameliorative liver histology induced by Rg1 were abrogated by Nrf2 antagonist all-transretinoic acid in vivo and Nrf2 siRNA in vitro. In conclusion, Rg1 produced hepatoprotective effects against APAP-induced acute liver injury via Nrf2 signaling pathway. Rg1 might be an effective approach for the prevention against acute liver injury.
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Affiliation(s)
- Chenqing Ning
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Xiaoguang Gao
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Changyuan Wang
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, 116044, China; Key Laboratory of Pharmacokinetics and Transport of Liaoning Province, Dalian Medical University, Dalian, 116044, China
| | - Yulong Kong
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, 116044, China
| | - Zhihao Liu
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, 116044, China; Key Laboratory of Pharmacokinetics and Transport of Liaoning Province, Dalian Medical University, Dalian, 116044, China
| | - Huijun Sun
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, 116044, China; Key Laboratory of Pharmacokinetics and Transport of Liaoning Province, Dalian Medical University, Dalian, 116044, China
| | - Pengyuan Sun
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, 116044, China; Key Laboratory of Pharmacokinetics and Transport of Liaoning Province, Dalian Medical University, Dalian, 116044, China
| | - Xiaokui Huo
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, 116044, China; Key Laboratory of Pharmacokinetics and Transport of Liaoning Province, Dalian Medical University, Dalian, 116044, China
| | - Xiaodong Ma
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, 116044, China; Key Laboratory of Pharmacokinetics and Transport of Liaoning Province, Dalian Medical University, Dalian, 116044, China
| | - Qiang Meng
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, 116044, China; Key Laboratory of Pharmacokinetics and Transport of Liaoning Province, Dalian Medical University, Dalian, 116044, China.
| | - Kexin Liu
- Department of Clinical Pharmacology, College of Pharmacy, Dalian Medical University, Dalian, 116044, China; Key Laboratory of Pharmacokinetics and Transport of Liaoning Province, Dalian Medical University, Dalian, 116044, China.
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Abdullahi W, Tripathi D, Ronaldson PT. Blood-brain barrier dysfunction in ischemic stroke: targeting tight junctions and transporters for vascular protection. Am J Physiol Cell Physiol 2018; 315:C343-C356. [PMID: 29949404 DOI: 10.1152/ajpcell.00095.2018] [Citation(s) in RCA: 335] [Impact Index Per Article: 55.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The blood-brain barrier (BBB) is a physical and biochemical barrier that precisely controls cerebral homeostasis. It also plays a central role in the regulation of blood-to-brain flux of endogenous and exogenous xenobiotics and associated metabolites. This is accomplished by molecular characteristics of brain microvessel endothelial cells such as tight junction protein complexes and functional expression of influx and efflux transporters. One of the pathophysiological features of ischemic stroke is disruption of the BBB, which significantly contributes to development of brain injury and subsequent neurological impairment. Biochemical characteristics of BBB damage include decreased expression and altered organization of tight junction constituent proteins as well as modulation of functional expression of endogenous BBB transporters. Therefore, there is a critical need for development of novel therapeutic strategies that can protect against BBB dysfunction (i.e., vascular protection) in the setting of ischemic stroke. Such strategies include targeting tight junctions to ensure that they maintain their correct structure or targeting transporters to control flux of physiological substrates for protection of endothelial homeostasis. In this review, we will describe the pathophysiological mechanisms in cerebral microvascular endothelial cells that lead to BBB dysfunction following onset of stroke. Additionally, we will utilize this state-of-the-art knowledge to provide insights on novel pharmacological strategies that can be developed to confer BBB protection in the setting of ischemic stroke.
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Affiliation(s)
- Wazir Abdullahi
- Department of Pharmacology, College of Medicine, University of Arizona , Tucson, Arizona
| | - Dinesh Tripathi
- Department of Pharmacology, College of Medicine, University of Arizona , Tucson, Arizona
| | - Patrick T Ronaldson
- Department of Pharmacology, College of Medicine, University of Arizona , Tucson, Arizona
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p53 attenuates acetaminophen-induced hepatotoxicity by regulating drug-metabolizing enzymes and transporter expression. Cell Death Dis 2018; 9:536. [PMID: 29748533 PMCID: PMC5945795 DOI: 10.1038/s41419-018-0507-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 03/19/2018] [Accepted: 03/20/2018] [Indexed: 12/18/2022]
Abstract
Acetaminophen (APAP) overdose is the most frequent cause of drug-induced acute liver failure. Inhibition of APAP metabolic activation and promotion in APAP disposition are important to protect against APAP-induced liver injury. Tumor suppressor p53 is traditionally recognized as a surveillance molecule to preserve genome integrity. Recent studies have emerged on discovering its functions in metabolic regulation. Our previous study reported that p53 promoted bile acid disposition and alleviated cholestastic syndrome. Here, we examined the effect of doxorubicin (Dox)-mediated p53 activation on APAP-induced hepatotoxicity in mice and revealed a novel role of p53 in regulating APAP metabolism and disposition. Histopathological and biochemical assessments demonstrated that administration of Dox (10 mg/kg/d) before APAP treatment (400 mg/kg) significantly alleviated APAP-induced hepatotoxicity. Dox treatment prevented APAP-induced GSH depletion and lipid peroxidation. p53-null mice were more susceptible to APAP-induced liver injury. Further, we found that the expression of drug-metabolizing enzymes and transporters CYPs, SULTs and MRPs was regulated by p53. Dox treatment also promoted Nrf2 activation and increased the expression of Nrf2 target genes including GSTα/μ and NQO1, which contribute to APAP detoxification. Overall, this study is the first to demonstrate the protective role of p53 in regulating APAP metabolism and disposition, which provides a potential new therapeutic target for APAP-induced liver injury.
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Wang L, Ma L, Lin Y, Liu X, Xiao L, Zhang Y, Xu Y, Zhou H, Pan G. Leflunomide Increases Hepatic Exposure to Methotrexate and Its Metabolite by Differentially Regulating Multidrug Resistance–Associated Protein Mrp2/3/4 Transporters via Peroxisome Proliferator–Activated Receptor α Activation. Mol Pharmacol 2018; 93:563-574. [DOI: 10.1124/mol.117.110593] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 03/26/2018] [Indexed: 12/15/2022] Open
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Shen Z, Wang Y, Su Z, Kou R, Xie K, Song F. Activation of p62-keap1-Nrf2 antioxidant pathway in the early stage of acetaminophen-induced acute liver injury in mice. Chem Biol Interact 2018; 282:22-28. [PMID: 29331651 DOI: 10.1016/j.cbi.2018.01.008] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 12/02/2017] [Accepted: 01/09/2018] [Indexed: 12/27/2022]
Abstract
Acetaminophen (APAP) overdose can cause severe liver failure even death. Nearly half of drug-induced liver injury is attributed to APAP in the US and many European countries. Oxidative stress has been validated as a critical event involved in APAP-induced liver failure. p62/SQSTM1, a selective autophagy adaptor protein, is reported to regulate Nrf2-ARE antioxidant pathway in response to oxidative stress. However, the exact role of p62-keap1-Nrf2 antioxidant pathway in APAP-induced hepatotoxicity remains unknown. In the present study, the dose-response and time-course model in C57/BL6 mice were established by intraperitoneal injection of APAP. The results of serum alanine/aspartate aminotransferases (ALT/AST) and histological examination demonstrated that APAP overdose resulted in the severe liver injury. In the meantime, the levels of p62, phospho-p62 and nuclear Nrf2 were significantly increased by APAP in mice liver, suggesting an activation of p62-keap1-Nrf2 pathway. In addition, the expression of GSTA1 mRNA was increased in a dose-dependent manner, while the mRNA levels of HO-1 and GCLC were decreased with the increase of APAP dose. Our further investigation found that expression of HO-1 and GCLC peaked at 3 h∼6 h, and then were decreased gradually. Taken together, these results indicated that p62-keap1-Nrf2 antioxidant pathway was primarily activated in the early stage of APAP hepatotoxicity, which might play a protective role in the process of APAP-induced acute liver injury.
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Affiliation(s)
- Zhenyu Shen
- Institute of Toxicology, Shandong University, 44 West Wenhua Road, Jinan, Shandong, 250012, PR China
| | - Yu Wang
- Institute of Toxicology, Shandong University, 44 West Wenhua Road, Jinan, Shandong, 250012, PR China
| | - Zhenhui Su
- Department of Pathology, Shandong Provincial Hospital, 324 Jingwu-Weiqi Road, Jinan, Shandong, 250021, PR China
| | - Ruirui Kou
- Institute of Toxicology, Shandong University, 44 West Wenhua Road, Jinan, Shandong, 250012, PR China
| | - Keqin Xie
- Institute of Toxicology, Shandong University, 44 West Wenhua Road, Jinan, Shandong, 250012, PR China
| | - Fuyong Song
- Institute of Toxicology, Shandong University, 44 West Wenhua Road, Jinan, Shandong, 250012, PR China.
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Tian B, Lu ZN, Guo XL. Regulation and role of nuclear factor-E2-related factor 2 (Nrf2) in multidrug resistance of hepatocellular carcinoma. Chem Biol Interact 2017; 280:70-76. [PMID: 29223570 DOI: 10.1016/j.cbi.2017.12.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Revised: 11/20/2017] [Accepted: 12/05/2017] [Indexed: 01/06/2023]
Abstract
Hepatocellular carcinoma (HCC) chemoresistance, which is regarded as a kind of stress management reaction to chemotherapy drugs, severely hinders the therapy outcomes of HCC treatment. Stress management is generally achieved by activating certain signal pathways and chemical factors, among which, nuclear factor-E2-related factor2 (Nrf2) is a key factor in HCC chemoresistance formation. Nrf2 is a nuclear factor that coordinates the induction and expression of a battery of genes encoding cytoprotective proteins when participating in the Nrf2antioxidant response element (Nrf2/ARE) pathway, which is one of the most important intracellular antioxidant stress pathways. This review summarizes the recent understanding of the involvement of Nrf2 in the chemoresistance of liver cancer, its target proteins, expression regulation and potential Nrf2 inhibitors that sensitize chemotherapy drugs in HCC.
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Affiliation(s)
- Bing Tian
- Department of Pharmacology, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Zhen-Ning Lu
- Department of Pharmacology, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Xiu-Li Guo
- Department of Pharmacology, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China.
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Li PC, Tu MJ, Ho PY, Jilek JL, Duan Z, Zhang QY, Yu AX, Yu AM. Bioengineered NRF2-siRNA Is Effective to Interfere with NRF2 Pathways and Improve Chemosensitivity of Human Cancer Cells. Drug Metab Dispos 2017; 46:2-10. [PMID: 29061583 DOI: 10.1124/dmd.117.078741] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 10/18/2017] [Indexed: 12/28/2022] Open
Abstract
The nuclear factor (erythroid-derived 2)-like 2 (NRF2) is a transcription factor in the regulation of many oxidative enzymes and efflux transporters critical for oxidative stress and cellular defense against xenobiotics. NRF2 is dysregulated in patient osteosarcoma (OS) tissues and correlates with therapeutic outcomes. Nevertheless, research on the NRF2 regulatory pathways and its potential as a therapeutic target is limited to the use of synthetic small interfering RNA (siRNA) carrying extensive artificial modifications. Herein, we report successful high-level expression of recombinant siRNA against NRF2 in Escherichia coli using our newly established noncoding RNA bioengineering technology, which was purified to >99% homogeneity using an anion-exchange fast protein liquid chromatography method. Bioengineered NRF2-siRNA was able to significantly knock down NRF2 mRNA and protein levels in human OS 143B and MG63 cells, and subsequently suppressed the expression of NRF2-regulated oxidative enzymes [heme oxygenase-1 and NAD(P)H:quinone oxidoreductase 1] and elevated intracellular levels of reactive oxygen species. In addition, recombinant NRF2-siRNA was effective to sensitize both 143B and MG63 cells to doxorubicin, cisplatin, and sorafenib, which was associated with significant downregulation of NRF2-targeted ATP-binding cassette (ABC) efflux transporters (ABCC3, ABCC4, and ABCG2). These findings support that targeting NRF2 signaling pathways may improve the sensitivity of cancer cells to chemotherapy, and bioengineered siRNA molecules should be added to current tools for related research.
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Affiliation(s)
- Peng-Cheng Li
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China (P.-C.L., A.-X.Y.) and Department of Biochemistry and Molecular Medicine, Comprehensive Cancer Center, UC Davis School of Medicine, Sacramento, California (P.-C.L., M.-J.T., P.Y.H., J.L.J., Z.D., Q.-Y.Z., A.-M.Y.)
| | - Mei-Juan Tu
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China (P.-C.L., A.-X.Y.) and Department of Biochemistry and Molecular Medicine, Comprehensive Cancer Center, UC Davis School of Medicine, Sacramento, California (P.-C.L., M.-J.T., P.Y.H., J.L.J., Z.D., Q.-Y.Z., A.-M.Y.)
| | - Pui Yan Ho
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China (P.-C.L., A.-X.Y.) and Department of Biochemistry and Molecular Medicine, Comprehensive Cancer Center, UC Davis School of Medicine, Sacramento, California (P.-C.L., M.-J.T., P.Y.H., J.L.J., Z.D., Q.-Y.Z., A.-M.Y.)
| | - Joseph L Jilek
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China (P.-C.L., A.-X.Y.) and Department of Biochemistry and Molecular Medicine, Comprehensive Cancer Center, UC Davis School of Medicine, Sacramento, California (P.-C.L., M.-J.T., P.Y.H., J.L.J., Z.D., Q.-Y.Z., A.-M.Y.)
| | - Zhijian Duan
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China (P.-C.L., A.-X.Y.) and Department of Biochemistry and Molecular Medicine, Comprehensive Cancer Center, UC Davis School of Medicine, Sacramento, California (P.-C.L., M.-J.T., P.Y.H., J.L.J., Z.D., Q.-Y.Z., A.-M.Y.)
| | - Qian-Yu Zhang
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China (P.-C.L., A.-X.Y.) and Department of Biochemistry and Molecular Medicine, Comprehensive Cancer Center, UC Davis School of Medicine, Sacramento, California (P.-C.L., M.-J.T., P.Y.H., J.L.J., Z.D., Q.-Y.Z., A.-M.Y.)
| | - Ai-Xi Yu
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China (P.-C.L., A.-X.Y.) and Department of Biochemistry and Molecular Medicine, Comprehensive Cancer Center, UC Davis School of Medicine, Sacramento, California (P.-C.L., M.-J.T., P.Y.H., J.L.J., Z.D., Q.-Y.Z., A.-M.Y.)
| | - Ai-Ming Yu
- Department of Orthopedics, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China (P.-C.L., A.-X.Y.) and Department of Biochemistry and Molecular Medicine, Comprehensive Cancer Center, UC Davis School of Medicine, Sacramento, California (P.-C.L., M.-J.T., P.Y.H., J.L.J., Z.D., Q.-Y.Z., A.-M.Y.)
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Flores K, Manautou JE, Renfro JL. Gender-specific expression of ATP-binding cassette (Abc) transporters and cytoprotective genes in mouse choroid plexus. Toxicology 2017; 386:84-92. [PMID: 28587784 DOI: 10.1016/j.tox.2017.05.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 05/23/2017] [Accepted: 05/30/2017] [Indexed: 11/18/2022]
Abstract
The choroid plexus (CP) and blood-brain barrier (BBB) control the movement of several drugs and endogenous compounds between the brain and systemic circulation. The multidrug resistance associated protein (Mrp) efflux transporters form part of these barriers. Several Mrp transporters are positively regulated by the transcription factor nuclear factor erythroid-2-related factor (Nrf2) in liver. The Mrps, Nrf2 and Nrf2-dependent genes are cytoprotective and our aim was to examine basal gender differences in expression of Mrp transporters, Nrf2 and Nrf2-dependent genes (Nqo1 and Ho-1) in the brain-barriers. Previous studies have shown higher expression of Mrp1, Mrp2 and Mrp4 in female mouse liver and kidney. We hypothesized that similar renal/hepatic gender-specific patterns are present in the brain-barrier epithelia interfaces. qPCR and immunoblot analyses showed that Mrp4, Ho-1 and Nqo1 expression was higher in female CP. Mrp1, Mrp2 and Nrf2 expression in the CP had no gender pattern. Female Mrp1, Mrp2 and Mrp4 mouse brain expressions in remaining brain areas, excluding CP, were higher than male. Functional analysis of Mrp4 in CP revealed active accumulation of the Mrp4 model substrate fluo-cAMP. WT female CP had 10-fold higher accumulation in the vascular spaces than males and 60% higher than Mrp4-/- females. Probenecid blocked all transport. Methotrexate did as well except in Mrp4-/- females where it had no effect, suggesting compensatory induction of transport occurred in Mrp4-/-. Collectively, our findings indicate significant gender differences in expression of Mrp transporters and cytoprotective genes in the CP and BBB.
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Affiliation(s)
- Katiria Flores
- Department of Physiology and Neurobiology, University of Connecticut, Storrs, CT, USA
| | - José E Manautou
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT, USA
| | - J Larry Renfro
- Department of Physiology and Neurobiology, University of Connecticut, Storrs, CT, USA.
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Hepatoprotective Effect of Polyphenol-Enriched Fraction from Folium Microcos on Oxidative Stress and Apoptosis in Acetaminophen-Induced Liver Injury in Mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017. [PMID: 28626497 PMCID: PMC5463195 DOI: 10.1155/2017/3631565] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Folium Microcos (FM), the leaves of Microcos paniculata L., shows various biological functions including antioxidant activity and α-glucosidase inhibitory effect. However, its therapeutic potential in acute liver injury is still unknown. This study investigated the hepatoprotective effect and underlying mechanisms of the polyphenol-enriched fraction (FMF) from Folium Microcos. FMF exhibited strong free radical scavenging activities and prevented HepG2/Hepa1-6 cells from hydrogen peroxide- (H2O2-) induced ROS production and apoptosis in vitro. Antioxidant activity and cytoprotective effects were further verified by alleviating APAP-induced hepatotoxicity in mice. Western blot analysis revealed that FMF pretreatment significantly abrogated APAP-mediated phosphorylation of MAPKs, activation of proapoptotic protein caspase-3/9 and Bax, and restored expression of antiapoptotic protein Bcl2. APAP-intoxicated mice pretreated with FMF showed increased nuclear accumulation of nuclear factor erythroid 2-related factor (Nrf2) and elevated hepatic expression of its target genes, NAD(P)H:quinine oxidoreductase 1 (NQO1) and hemeoxygenase-1(HO-1). HPLC analysis revealed the four predominantly phenolic compounds present in FMF: narcissin, isorhamnetin-3-O-β-D-glucoside, isovitexin, and vitexin. Consequently, these findings indicate that FMF possesses a hepatoprotective effect against APAP-induced hepatotoxicity mainly through dual modification of ROS/MAPKs/apoptosis axis and Nrf2-mediated antioxidant response, which may be attributed to the strong antioxidant activity of phenolic components.
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Brzica H, Abdullahi W, Ibbotson K, Ronaldson PT. Role of Transporters in Central Nervous System Drug Delivery and Blood-Brain Barrier Protection: Relevance to Treatment of Stroke. J Cent Nerv Syst Dis 2017; 9:1179573517693802. [PMID: 28469523 PMCID: PMC5392046 DOI: 10.1177/1179573517693802] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 01/22/2017] [Indexed: 01/01/2023] Open
Abstract
Ischemic stroke is a leading cause of morbidity and mortality in the United States. The only approved pharmacologic treatment for ischemic stroke is thrombolysis via recombinant tissue plasminogen activator (r-tPA). A short therapeutic window and serious adverse events (ie, hemorrhage, excitotoxicity) greatly limit r-tPA therapy, which indicates an essential need to develop novel stroke treatment paradigms. Transporters expressed at the blood-brain barrier (BBB) provide a significant opportunity to advance stroke therapy via central nervous system delivery of drugs that have neuroprotective properties. Examples of such transporters include organic anion–transporting polypeptides (Oatps) and organic cation transporters (Octs). In addition, multidrug resistance proteins (Mrps) are transporter targets in brain microvascular endothelial cells that can be exploited to preserve BBB integrity in the setting of stroke. Here, we review current knowledge on stroke pharmacotherapy and demonstrate how endogenous BBB transporters can be targeted for improvement of ischemic stroke treatment.
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Affiliation(s)
- Hrvoje Brzica
- Department of Pharmacology, College of Medicine, The University of Arizona, Tucson, AZ, USA
| | - Wazir Abdullahi
- Department of Pharmacology, College of Medicine, The University of Arizona, Tucson, AZ, USA
| | - Kathryn Ibbotson
- Department of Pharmacology and Toxicology, College of Pharmacy, The University of Arizona, Tucson, AZ, USA
| | - Patrick T Ronaldson
- Department of Pharmacology, College of Medicine, The University of Arizona, Tucson, AZ, USA
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Ibbotson K, Yell J, Ronaldson PT. Nrf2 signaling increases expression of ATP-binding cassette subfamily C mRNA transcripts at the blood-brain barrier following hypoxia-reoxygenation stress. Fluids Barriers CNS 2017; 14:6. [PMID: 28298215 PMCID: PMC5353788 DOI: 10.1186/s12987-017-0055-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 02/16/2017] [Indexed: 12/11/2022] Open
Abstract
Background Strategies to maintain BBB integrity in diseases with a hypoxia/reoxygenation (H/R) component involve preventing glutathione (GSH) loss from endothelial cells. GSH efflux transporters include multidrug resistance proteins (Mrps). Therefore, characterization of Mrp regulation at the BBB during H/R is required to advance these transporters as therapeutic targets. Our goal was to investigate, in vivo, regulation of Abcc1, Abcc2, and Abcc4 mRNA expression (i.e., genes encoding Mrp isoforms that transport GSH) by nuclear factor E2-related factor (Nrf2) using a well-established H/R model. Methods Female Sprague–Dawley rats (200–250 g) were subjected to normoxia (Nx, 21% O2, 60 min), hypoxia (Hx, 6% O2, 60 min) or H/R (6% O2, 60 min followed by 21% O2, 10 min, 30 min, or 1 h) or were treated with the Nrf2 activator sulforaphane (25 mg/kg, i.p.) for 3 h. Abcc mRNA expression in brain microvessels was determined using quantitative real-time PCR. Nrf2 signaling activation was examined using an electrophoretic mobility shift assay (EMSA) and chromatin immunoprecipitation (ChIP) respectively. Data were expressed as mean ± SD and analyzed via ANOVA followed by the post hoc Bonferroni t test. Results We observed increased microvascular expression of Abcc1, Abcc2, and Abcc4 mRNA following H/R treatment with reoxygenation times of 10 min, 30 min, and 1 h and in animals treated with sulforaphane. Using a biotinylated Nrf2 probe, we observed an upward band shift in brain microvessels isolated from H/R animals or animals administered sulforaphane. ChIP studies showed increased Nrf2 binding to antioxidant response elements on Abcc1, Abcc2, and Abcc4 promoters following H/R or sulforaphane treatment, suggesting a role for Nrf2 signaling in Abcc gene regulation. Conclusions Our data show increased Abcc1, Abcc2, and Abcc4 mRNA expression at the BBB in response to H/R stress and that Abcc gene expression is regulated by Nrf2 signaling. Since these Mrp isoforms transport GSH, these results may point to endogenous transporters that can be targeted for BBB protection during H/R stress. Experiments are ongoing to examine functional implications of Nrf2-mediated increases in Abcc transcript expression. Such studies will determine utility of targeting Mrp isoforms for BBB protection in diseases with an H/R component.
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Affiliation(s)
- Kathryn Ibbotson
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, 1295 N. Martin Avenue, P.O. Box 210202, Tucson, 85721, AZ, USA
| | - Joshua Yell
- Department of Pharmacology, College of Medicine, University of Arizona, 1501 N. Campbell Avenue, P.O. Box 245050, Tucson, AZ, 85724-5050, USA
| | - Patrick T Ronaldson
- Department of Pharmacology, College of Medicine, University of Arizona, 1501 N. Campbell Avenue, P.O. Box 245050, Tucson, AZ, 85724-5050, USA.
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Sunitinib-paracetamol sex-divergent pharmacokinetics and tissue distribution drug-drug interaction in mice. Invest New Drugs 2017; 35:145-157. [DOI: 10.1007/s10637-016-0415-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 12/01/2016] [Indexed: 12/12/2022]
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Naturally Occurring Nrf2 Activators: Potential in Treatment of Liver Injury. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:3453926. [PMID: 28101296 PMCID: PMC5215260 DOI: 10.1155/2016/3453926] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 11/08/2016] [Accepted: 11/28/2016] [Indexed: 12/26/2022]
Abstract
Oxidative stress plays a major role in acute and chronic liver injury. In hepatocytes, oxidative stress frequently triggers antioxidant response by activating nuclear erythroid 2-related factor 2 (Nrf2), a transcription factor, which upregulates various cytoprotective genes. Thus, Nrf2 is considered a potential therapeutic target to halt liver injury. Several studies indicate that activation of Nrf2 signaling pathway ameliorates liver injury. The hepatoprotective potential of naturally occurring compounds has been investigated in various models of liver injuries. In this review, we comprehensively appraise various phytochemicals that have been assessed for their potential to halt acute and chronic liver injury by enhancing the activation of Nrf2 and have the potential for use in humans.
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Rudraiah S, Manautou JE. From hepatoprotection models to new therapeutic modalities for treating liver diseases: a personal perspective. F1000Res 2016; 5. [PMID: 27499850 PMCID: PMC4946394 DOI: 10.12688/f1000research.8609.2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/19/2016] [Indexed: 01/29/2023] Open
Abstract
A variety of rodent models of hepatoprotection have been developed in which tolerance to acetaminophen-induced hepatotoxicity occurs. Autoprotection/heteroprotection is a phenomenon where prior exposure to a mildly toxic dose of toxicant confers protection against a subsequently administered higher dose of the same toxicant (as in the case of autoprotection) or to a different toxicant (referred to as heteroprotection). Multiple mechanisms regulate this adaptive response, including hepatocellular proliferation, proteostasis, enhanced expression of cytoprotective genes, and altered tissue immune response. In this review, we will discuss recent findings that highlight the complexity of these adaptive mechanisms and we also outline the usefulness of these findings to devise therapeutic and/or diagnostic tools for acetaminophen-induced liver damage in patients.
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Affiliation(s)
- Swetha Rudraiah
- Toxicology Program, Department of Pharmaceutical Sciences, School of Pharmacy, University of Connecticut, Storrs, CT, USA
| | - José E Manautou
- Toxicology Program, Department of Pharmaceutical Sciences, School of Pharmacy, University of Connecticut, Storrs, CT, USA
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Bright AS, Herrera-Garcia G, Moscovitz JE, You D, Guo GL, Aleksunes LM. Regulation of Drug Disposition Gene Expression in Pregnant Mice with Car Receptor Activation. NUCLEAR RECEPTOR RESEARCH 2016; 3. [PMID: 27818994 DOI: 10.11131/2016/101193] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
More than half of pregnant women use prescription medications in order to maintain both maternal and fetal health. The constitutive androstane receptor (Car) critically affects the disposition of chemicals by regulating the transcription of genes encoding metabolic enzymes and transporters. However, the effects of Car activation on chemical disposition during pregnancy are unclear. This study aims to determine the degree to which pregnancy alters the expression of drug metabolizing enzymes and transporters in response to the pharmacological activation of Car. To test this, pregnant C57BL/6 mice were administered IP doses of vehicle, or a potent Car agonist, TCPOBOP, on gestation days 14, 15 and 16. Hepatic mRNA and protein expression of Car target genes (phase I, II and transporters) were quantified on gestation day 17. Pregnancy-related changes, such as induction of Cyp2b10, Ugt1a1 and Sult1a1 and repression of Ugt1a6, Gsta1, Gsta2 and Mrp6, were observed. Interestingly, the induction of Cyp2b10, Gsta1, Gsta2 and Mrp2-4 mRNAs by TCPOBOP was attenuated in maternal livers suggesting that Car activation is impeded by the biochemical and/or physiological changes that occur during gestation. Taken together, these findings suggest that pregnancy and pharmacological activation of Car can differentially regulate the expression of drug metabolism and transport genes.
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Affiliation(s)
- Amanda S Bright
- Department of Pharmacology and Toxicology, Rutgers University Ernest Mario School of Pharmacy, 170 Frelinghuysen Road, Piscataway, NJ 08854, USA
| | - Guadalupe Herrera-Garcia
- Department of Obstetrics and Gynecology, Rutgers-Robert Wood Johnson Medical School, 1 Robert Wood Johnson Place, New Brunswick, NJ 08901, USA
| | - Jamie E Moscovitz
- Department of Pharmacology and Toxicology, Rutgers University Ernest Mario School of Pharmacy, 170 Frelinghuysen Road, Piscataway, NJ 08854, USA
| | - Dahea You
- Department of Pharmacology and Toxicology, Rutgers University Ernest Mario School of Pharmacy, 170 Frelinghuysen Road, Piscataway, NJ 08854, USA
| | - Grace L Guo
- Department of Pharmacology and Toxicology, Rutgers University Ernest Mario School of Pharmacy, 170 Frelinghuysen Road, Piscataway, NJ 08854, USA; Environmental and Occupational Health Sciences Institute, 170 Frelinghuysen Road, Piscataway, NJ 08854, USA
| | - Lauren M Aleksunes
- Department of Pharmacology and Toxicology, Rutgers University Ernest Mario School of Pharmacy, 170 Frelinghuysen Road, Piscataway, NJ 08854, USA; Environmental and Occupational Health Sciences Institute, 170 Frelinghuysen Road, Piscataway, NJ 08854, USA
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Wang W, Guan C, Sun X, Zhao Z, Li J, Fu X, Qiu Y, Huang M, Jin J, Huang Z. Tanshinone IIA protects against acetaminophen-induced hepatotoxicity via activating the Nrf2 pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2016; 23:589-596. [PMID: 27161400 DOI: 10.1016/j.phymed.2016.02.022] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 02/02/2016] [Accepted: 02/11/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND Tanshinone IIA (Tan), the main active component of Salvia miltiorrhiza, has been demonstrated to have antioxidant activity. Acetaminophen (APAP), a widely used antipyretic and analgesic, can cause severe hepatotoxicity and liver failure when taken overdose. Oxidative stress has been reported to be involved in APAP-induced liver failure. PURPOSE This study aimed to investigate the effect of Tan on APAP-induced hepatotoxicity and the underlying mechanisms involved. STUDY DESIGN C57BL/6J mice were divided into six groups: (1) control, (2) APAP group, (3) APAP+Tan (30mg/kg) group, (4) Tan (30mg/kg) group, (5) APAP+Tan (10mg/kg) group, (6) Tan (10mg/kg) group. Mice in group 3 and 5 were pre-treated with specified dose of Tan by gavage and subsequently injected with an overdose of APAP intraperitoneally (i.p., 300mg/kg). The effect of Tan on Nrf2 pathway was investigated in HepG2 cells and mice. METHODS Plasma aspartate transaminase (ALT), aspartate transaminase (AST), lactate dehydrogenase (LDH), liver glutathione (GSH), glutathione transferase (GST), glutathione peroxidase (GPx), superoxide dismutase (SOD) and catalase (CAT) levels were determined after mice were sacrificed. Lipid peroxidation and histological examination were performed. The effect of Tan on the Nrf2 pathway was detected by western blotting and qRT-PCR. RESULTS Tan pretreatment reduced APAP-induced liver injury. Tan was able to activate Nrf2 and increase the expression levels of Nrf2 target genes, including glutamate-cysteine ligase catalytic subunit (GCLC), NAD(P)H:quinine oxidoreductase 1 (NQO1) and hemeoxygenase-1 (HO-1), in a dose-dependent manner in HepG2 cells. Consistent with our observations in HepG2 cells, Tan increased nuclear Nrf2 accumulation and upregulated mRNA and protein levels of the Nrf2 target genes GCLC, NQO1 and HO-1 in C57BL/6J mice compared with mice treated with APAP alone. CONCLUSIONS Our results demonstrate that Tan pretreatment could protect the liver from APAP-induced hepatic injury by activating the Nrf2 pathway. Tan may provide a new strategy for the protection against APAP-induced liver injury.
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Affiliation(s)
- Wenwen Wang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, PR China
| | - Cuiwen Guan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, PR China; The Third People's Hospital, Nanhai District, Foshan 528244, PR China
| | - Xiaozhe Sun
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, PR China
| | - Zhongxiang Zhao
- School of Chinese MateriaMedica, Guangzhou University of Chinese Medicine, Guangzhou 510006, PR China
| | - Jia Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, PR China
| | - Xinlu Fu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, PR China
| | - Yuwen Qiu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, PR China
| | - Min Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, PR China
| | - Jing Jin
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, PR China.
| | - Zhiying Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, PR China.
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Wojdyla K, Wrzesinski K, Williamson J, Fey SJ, Rogowska-Wrzesinska A. Acetaminophen-induced S-nitrosylation and S-sulfenylation signalling in 3D cultured hepatocarcinoma cell spheroids. Toxicol Res (Camb) 2016; 5:905-920. [PMID: 30090399 PMCID: PMC6072433 DOI: 10.1039/c5tx00469a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 02/26/2016] [Indexed: 12/12/2022] Open
Abstract
Acetaminophen (APAP) is possibly the most widely used medication globally and yet little is known of its molecular effects at therapeutic doses. Using a novel approach, we have analysed the redox proteome of the hepatocellular cell line HepG2/C3A treated with therapeutic doses of APAP and quantitated both individual protein abundance and their reversible S-nitrosylation (SNO) and S-sulfenylation (SOH) modifications by mass spectrometry. APAP treatment results in a late, transient increase in ATP production and a multiplicity of alterations in protein abundance and modifications. The majority of the differentially SNO or SOH modified proteins are found in the endoplasmic reticulum and cytosol, suggesting that the source of reactive species is there. The cellular response indicates: constraint of fatty acid metabolism; reduction in ribosome construction and protein synthesis (to conserve ATP); maintenance of glutathione levels (by increased synthetic capacity); and an increased NADPH production (via the pentose phosphate pathway). This response appears to be coordinated, directly or indirectly, by the canonical Wnt and Nrf2 signalling pathways. Combined with the known role of NAPQI, these studies suggest that the physiological and toxicological responses form a continuum: therapeutic doses of APAP produce reactive species and NAPQI in the cytoplasm but result in little permanent damage. The cell mounts a multifaceted response which minimises disruption and repairs are effected within a day or two. Higher doses of APAP lead to intensified reactive species production, which increasingly disturbs mitochondrial function and eventually leads to cell death.
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Affiliation(s)
- Katarzyna Wojdyla
- Protein Research Group , Department of Biochemistry and Molecular Biology , University of Southern Denmark , Campusvej 55 , 5230 Odense M , Denmark .
| | - Krzysztof Wrzesinski
- Tissue Culture Engineering Laboratory , Department of Biochemistry and Molecular Biology , University of Southern Denmark , Campusvej 55 , 5230 Odense M , Denmark
| | - James Williamson
- Protein Research Group , Department of Biochemistry and Molecular Biology , University of Southern Denmark , Campusvej 55 , 5230 Odense M , Denmark .
| | - Stephen J Fey
- Tissue Culture Engineering Laboratory , Department of Biochemistry and Molecular Biology , University of Southern Denmark , Campusvej 55 , 5230 Odense M , Denmark
| | - Adelina Rogowska-Wrzesinska
- Protein Research Group , Department of Biochemistry and Molecular Biology , University of Southern Denmark , Campusvej 55 , 5230 Odense M , Denmark .
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Schisandrol B protects against acetaminophen-induced acute hepatotoxicity in mice via activation of the NRF2/ARE signaling pathway. Acta Pharmacol Sin 2016; 37:382-9. [PMID: 26806302 DOI: 10.1038/aps.2015.120] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 08/25/2015] [Indexed: 12/16/2022] Open
Abstract
AIM The nuclear factor erythroid 2-related factor 2 (NRF2) acts through the antioxidant response element (ARE) to regulate the expression of many detoxifying and antioxidant genes responsible for cytoprotective processes. We previously reported that Schisandrol B (SolB) isolated from Schisandra sphenanthera produced a protective effect against acetaminophen (APAP)-induced liver injury. In this study we investigated whether the NRF2/ARE signaling pathway was involved in this hepato-protective effect. METHODS Male C57BL/6 mice were treated with SolB (200 mg · kg(-1) · d(-1), ig) for 3 d before injection of APAP (400 mg/kg, ip). Serum and liver tissue samples were collected 6 h later. The mRNA and protein expression were measured using qRT-PCR and Western blot assay, respectively. The activation of NRF2 was examined in HepG2 cells using luciferase reporter gene assay. RESULTS SolB pretreatment significantly alleviated the hepatic injury (large patchy necrosis and hyperemia of the hepatic sinus), the increase of serum AST, ALT levels and hepatic MDA contents, and the decrease of liver and mitochondrial glutathione levels in APAP-treated mice. Furthermore, SolB pretreatment significantly increased nuclear accumulation of NRF2 and increased hepatic expression of NRF2 downstream proteins, including GCLC, GSR, NQO1, GSTs, MRP2, MRP3 and MRP4 in APAP-treated mice. Moreover, treatment with SolB (2.5-20 μmol/L) dose-dependently increased the activity of NRF2 reporter gene in HepG2 cells. CONCLUSION SolB exhibits a remarkable protective effect against APAP-induced hepatotoxicity, partially via activation of the NRF2/ARE pathway and regulation of NRF2 target genes, which induce detoxification and increase antioxidant capacity.
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Donepudi AC, Cheng Q, Lu ZJ, Cherrington NJ, Slitt AL. Hepatic Transporter Expression in Metabolic Syndrome: Phenotype, Serum Metabolic Hormones, and Transcription Factor Expression. ACTA ACUST UNITED AC 2016; 44:518-26. [PMID: 26847773 DOI: 10.1124/dmd.115.066779] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 01/16/2016] [Indexed: 12/15/2022]
Abstract
Metabolic syndrome is a multifactorial disease associated with obesity, insulin resistance, diabetes, and the alteration of multiple metabolic hormones. Obesity rates have been rising worldwide, which increases our need to understand how this population will respond to drugs and exposure to other chemicals. The purpose of this study was to determine in lean and obese mice the ontogeny of clinical biomarkers such as serum hormone and blood glucose levels as well as the physiologic markers that correlate with nuclear receptor- and transporter-related pathways. Livers from male and female wild-type (WT) (C57BL/6) and ob/ob mice littermates were collected before, during, and after the onset of obesity. Serum hormone and mRNA levels were analyzed. Physiologic changes and gene expression during maturation and progression to obesity were performed and correlation analysis was performed using canonical correlations. Significant ontogenic changes in both WT and ob/ob mice were observed and these ontogenic changes differ in ob/ob mice with the development of obesity. In males and females, the ontogenic pattern of the expression of genes such as Abcc3, 4, Abcg2, Cyp2b10, and 4a14 started to differ from week 3, and became significant at weeks 4 and 8 in ob/ob mice compared with WT mice. In obese males, serum resistin, glucagon, and glucose levels correlated with the expression of most hepatic ATP-binding cassette (Abc) transporters, whereas in obese females, serum glucagon-like peptide 1 levels were correlated with most hepatic uptake transporters and P450 enzymes. Overall, the correlation between physiologic changes and gene expression indicate that metabolism-related hormones may play a role in regulating the genes involved in drug metabolism and transport.
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Affiliation(s)
- Ajay C Donepudi
- Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island (A.C.D., Q.C, A.L.S); Arizona Statistical Consulting Laboratory, The Bio5 Institute (Z.J.L.) and Department of Pharmacology and Toxicology, College of Pharmacy (N.J.C.), University of Arizona, Tucson, Arizona
| | - Qiuqiong Cheng
- Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island (A.C.D., Q.C, A.L.S); Arizona Statistical Consulting Laboratory, The Bio5 Institute (Z.J.L.) and Department of Pharmacology and Toxicology, College of Pharmacy (N.J.C.), University of Arizona, Tucson, Arizona
| | - Zhenqiang James Lu
- Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island (A.C.D., Q.C, A.L.S); Arizona Statistical Consulting Laboratory, The Bio5 Institute (Z.J.L.) and Department of Pharmacology and Toxicology, College of Pharmacy (N.J.C.), University of Arizona, Tucson, Arizona
| | - Nathan J Cherrington
- Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island (A.C.D., Q.C, A.L.S); Arizona Statistical Consulting Laboratory, The Bio5 Institute (Z.J.L.) and Department of Pharmacology and Toxicology, College of Pharmacy (N.J.C.), University of Arizona, Tucson, Arizona
| | - Angela L Slitt
- Department of Biomedical and Pharmaceutical Sciences, University of Rhode Island, Kingston, Rhode Island (A.C.D., Q.C, A.L.S); Arizona Statistical Consulting Laboratory, The Bio5 Institute (Z.J.L.) and Department of Pharmacology and Toxicology, College of Pharmacy (N.J.C.), University of Arizona, Tucson, Arizona
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Rudraiah S, Gu X, Hines RN, Manautou JE. Oxidative stress-responsive transcription factor NRF2 is not indispensable for the human hepatic Flavin-containing monooxygenase-3 (FMO3) gene expression in HepG2 cells. Toxicol In Vitro 2015; 31:54-9. [PMID: 26616280 DOI: 10.1016/j.tiv.2015.11.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 11/01/2015] [Accepted: 11/21/2015] [Indexed: 02/07/2023]
Abstract
UNLABELLED The flavin-containing monooxygenases (FMOs) are important for the oxidation of a variety of endogenous compounds and xenobiotics. The hepatic expression of FMO3 is highly variable and until recently, it was thought to be uninducible. In this study, human FMO3 gene regulation by the oxidative stress transcription factor, nuclear factor (erythroid-derived 2)-like 2 (NRF2) was examined. Constitutive FMO3 gene expression is repressed in HepG2 cells, thus this cell can be a good model for FMO3 gene regulation studies. Over-expression of NRF2 in HepG2 cells increased NRF2 target gene expression, heme oxygenase-1 (HMOX1) and NAD(P)H quinone oxidoreductase-1 (NQO1), but did not alter FMO3 gene expression. Co-transfection studies with NRF2 or its cytosolic regulatory protein, Kelch-like ECH-associated protein 1 (KEAP1), expression vectors, along with FMO3 promoter luciferase reporter constructs of various lengths (5kb or 6kb), did not change FMO3 reporter gene activity significantly. Furthermore, treatment with tert-butyl hydroperoxide (tBHP) and tert-butyl hydroquinone (tBHQ) did not alter FMO3 reporter construct activity. In summary, in vitro results suggest that the transcriptional regulation of FMO3 might not involve the NRF2-KEAP1 regulatory pathway.
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Affiliation(s)
- Swetha Rudraiah
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT, USA.
| | - Xinsheng Gu
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT, USA.
| | - Ronald N Hines
- US EPA, National Health and Environmental Effects Research Laboratory, Research Triangle Park, NC, USA.
| | - José E Manautou
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT, USA.
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James L, Yan K, Pence L, Simpson P, Bhattacharyya S, Gill P, Letzig L, Kearns G, Beger R. Comparison of Bile Acids and Acetaminophen Protein Adducts in Children and Adolescents with Acetaminophen Toxicity. PLoS One 2015; 10:e0131010. [PMID: 26208104 PMCID: PMC4514842 DOI: 10.1371/journal.pone.0131010] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 05/26/2015] [Indexed: 02/05/2023] Open
Abstract
Metabolomics approaches have enabled the study of new mechanisms of liver injury in experimental models of drug toxicity. Disruption of bile acid homeostasis is a known mechanism of drug induced liver injury. The relationship of individual bile acids to indicators of oxidative drug metabolism (acetaminophen protein adducts) and liver injury was examined in children with acetaminophen overdose, hospitalized children with low dose exposure to acetaminophen, and children with no recent exposure to acetaminophen. Nine bile acids were quantified through targeted metabolomic analysis in the serum samples of the three groups. Bile acids were compared to serum levels of acetaminophen protein adducts and alanine aminotransferase. Glycodeoxycholic acid, taurodeoxycholic acid, and glycochenodeoxycholic acid were significantly increased in children with acetaminophen overdose compared to healthy controls. Among patients with acetaminophen overdose, bile acids were higher in subjects with acetaminophen protein adduct values > 1.0 nmol/mL and modest correlations were noted for three bile acids and acetaminophen protein adducts as follows: taurodeoxycholic acid (R=0.604; p<0.001), glycodeoxycholic acid (R=0.581; p<0.001), and glycochenodeoxycholic acid (R=0.571; p<0.001). Variability in bile acids was greater among hospitalized children receiving low doses of acetaminophen than in healthy children with no recent acetaminophen exposure. Compared to bile acids, acetaminophen protein adducts more accurately discriminated among children with acetaminophen overdose, children with low dose exposure to acetaminophen, and healthy control subjects. In children with acetaminophen overdose, elevations of conjugated bile acids were associated with specific indicators of acetaminophen metabolism and non-specific indicators of liver injury.
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Affiliation(s)
- Laura James
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72202, United States of America
- Arkansas Children’s Hospital Research Institute, Little Rock, AR 72202, United States of America
| | - Ke Yan
- Medical College of Wisconsin, Milwaukee, WI 53226, United States of America
| | - Lisa Pence
- Division of Systems Biology, National Center for Toxicological Research, Jefferson, AR 72079, United States of America
| | - Pippa Simpson
- Medical College of Wisconsin, Milwaukee, WI 53226, United States of America
| | - Sudeepa Bhattacharyya
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72202, United States of America
- Arkansas Children’s Hospital Research Institute, Little Rock, AR 72202, United States of America
| | - Pritmohinder Gill
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72202, United States of America
- Arkansas Children’s Hospital Research Institute, Little Rock, AR 72202, United States of America
| | - Lynda Letzig
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72202, United States of America
- Arkansas Children’s Hospital Research Institute, Little Rock, AR 72202, United States of America
| | - Gregory Kearns
- Division of Pediatric Pharmacology, Medical Toxicology and Therapeutic Innovation, The Children’s Mercy Hospital, Kansas City, MO 64108, United States of America
| | - Richard Beger
- Division of Systems Biology, National Center for Toxicological Research, Jefferson, AR 72079, United States of America
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Targeting transporters: promoting blood-brain barrier repair in response to oxidative stress injury. Brain Res 2015; 1623:39-52. [PMID: 25796436 DOI: 10.1016/j.brainres.2015.03.018] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2015] [Revised: 03/09/2015] [Accepted: 03/10/2015] [Indexed: 01/06/2023]
Abstract
The blood-brain barrier (BBB) is a physical and biochemical barrier that precisely regulates the ability of endogenous and exogenous substances to accumulate within brain tissue. It possesses structural and biochemical features (i.e., tight junction and adherens junction protein complexes, influx and efflux transporters) that work in concert to control solute permeation. Oxidative stress, a critical component of several diseases including cerebral hypoxia/ischemia and peripheral inflammatory pain, can cause considerable injury to the BBB and lead to significant CNS pathology. This suggests a critical need for novel therapeutic approaches that can protect the BBB in diseases with an oxidative stress component. Recent studies have identified molecular targets (i.e., putative membrane transporters, intracellular signaling systems) that can be exploited for optimization of endothelial drug delivery or for control of transport of endogenous substrates such as the antioxidant glutathione (GSH). In particular, targeting transporters offers a unique approach to protect BBB integrity by promoting repair of cell-cell interactions at the level of the brain microvascular endothelium. This review summarizes current knowledge in this area and emphasizes those targets that present considerable opportunity for providing BBB protection and/or promoting BBB repair in the setting of oxidative stress. This article is part of a Special Issue entitled SI: Cell Interactions In Stroke.
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