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Moeckli B, Delaune V, Gilbert B, Peloso A, Oldani G, El Hajji S, Slits F, Ribeiro JR, Mercier R, Gleyzolle A, Rubbia-Brandt L, Gex Q, Lacotte S, Toso C. Maternal obesity increases the risk of hepatocellular carcinoma through the transmission of an altered gut microbiome. JHEP Rep 2024; 6:101056. [PMID: 38681863 PMCID: PMC11046215 DOI: 10.1016/j.jhepr.2024.101056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 02/13/2024] [Accepted: 02/19/2024] [Indexed: 05/01/2024] Open
Abstract
Background & Aims Emerging evidence suggests that maternal obesity negatively impacts the health of offspring. Additionally, obesity is a risk factor for hepatocellular carcinoma (HCC). Our study aims to investigate the impact of maternal obesity on the risk for HCC development in offspring and elucidate the underlying transmission mechanisms. Methods Female mice were fed either a high-fat diet (HFD) or a normal diet (ND). All offspring received a ND after weaning. We studied liver histology and tumor load in a N-diethylnitrosamine (DEN)-induced HCC mouse model. Results Maternal obesity induced a distinguishable shift in gut microbial composition. At 40 weeks, female offspring of HFD-fed mothers (HFD offspring) were more likely to develop steatosis (9.43% vs. 3.09%, p = 0.0023) and fibrosis (3.75% vs. 2.70%, p = 0.039), as well as exhibiting an increased number of inflammatory infiltrates (4.8 vs. 1.0, p = 0.018) and higher expression of genes involved in fibrosis and inflammation, compared to offspring of ND-fed mothers (ND offspring). A higher proportion of HFD offspring developed liver tumors after DEN induction (79.8% vs. 37.5%, p = 0.0084) with a higher mean tumor volume (234 vs. 3 μm3, p = 0.0041). HFD offspring had a significantly less diverse microbiota than ND offspring (Shannon index 2.56 vs. 2.92, p = 0.0089), which was rescued through co-housing. In the principal component analysis, the microbiota profile of co-housed animals clustered together, regardless of maternal diet. Co-housing of HFD offspring with ND offspring normalized their tumor load. Conclusions Maternal obesity increases female offspring's susceptibility to HCC. The transmission of an altered gut microbiome plays an important role in this predisposition. Impact and implications The worldwide incidence of obesity is constantly rising, with more and more children born to obese mothers. In this study, we investigate the impact of maternal diet on gut microbiome composition and its role in liver cancer development in offspring. We found that mice born to mothers with a high-fat diet inherited a less diverse gut microbiome, presented chronic liver injury and an increased risk of developing liver cancer. Co-housing offspring from normal diet- and high-fat diet-fed mothers restored the gut microbiome and, remarkably, normalized the risk of developing liver cancer. The implementation of microbial screening and restoration of microbial diversity holds promise in helping to identify and treat individuals at risk to prevent harm for future generations.
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Affiliation(s)
- Beat Moeckli
- Hepatology and Transplantation Laboratory, Department of Surgery, Faculty of Medicine, University of Geneva, 1206 Geneva, Switzerland
- Department of Surgery, Division of Visceral Surgery, Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Vaihere Delaune
- Hepatology and Transplantation Laboratory, Department of Surgery, Faculty of Medicine, University of Geneva, 1206 Geneva, Switzerland
- Department of Surgery, Division of Visceral Surgery, Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Benoît Gilbert
- Department of Medicine, Division of Rheumatology, Geneva University Hospitals, 1206 Geneva, Switzerland
- Geneva Centre for Inflammation Research (GCIR), Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Andrea Peloso
- Department of Surgery, Division of Visceral Surgery, Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Graziano Oldani
- Hepatology and Transplantation Laboratory, Department of Surgery, Faculty of Medicine, University of Geneva, 1206 Geneva, Switzerland
- Department of Surgery, Division of General Surgery, The University of British Columbia, Vancouver, Canada
| | - Sofia El Hajji
- Hepatology and Transplantation Laboratory, Department of Surgery, Faculty of Medicine, University of Geneva, 1206 Geneva, Switzerland
- Department of Surgery, Division of Visceral Surgery, Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Florence Slits
- Hepatology and Transplantation Laboratory, Department of Surgery, Faculty of Medicine, University of Geneva, 1206 Geneva, Switzerland
| | - Joana Rodrigues Ribeiro
- Department of Surgery, Division of Visceral Surgery, Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Ruben Mercier
- Hepatology and Transplantation Laboratory, Department of Surgery, Faculty of Medicine, University of Geneva, 1206 Geneva, Switzerland
| | - Adrien Gleyzolle
- Department of Diagnostics, Division of Radiology, Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Laura Rubbia-Brandt
- Department of Diagnostics Division of Clinical Pathology, Geneva University Hospitals, 1205 Geneva, Switzerland
| | - Quentin Gex
- Hepatology and Transplantation Laboratory, Department of Surgery, Faculty of Medicine, University of Geneva, 1206 Geneva, Switzerland
| | - Stephanie Lacotte
- Hepatology and Transplantation Laboratory, Department of Surgery, Faculty of Medicine, University of Geneva, 1206 Geneva, Switzerland
| | - Christian Toso
- Hepatology and Transplantation Laboratory, Department of Surgery, Faculty of Medicine, University of Geneva, 1206 Geneva, Switzerland
- Department of Surgery, Division of Visceral Surgery, Geneva University Hospitals, 1205 Geneva, Switzerland
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Crosstalk between Oxidative Stress and Inflammatory Liver Injury in the Pathogenesis of Alcoholic Liver Disease. Int J Mol Sci 2022; 23:ijms23020774. [PMID: 35054960 PMCID: PMC8775426 DOI: 10.3390/ijms23020774] [Citation(s) in RCA: 72] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/04/2022] [Accepted: 01/07/2022] [Indexed: 02/06/2023] Open
Abstract
Alcoholic liver disease (ALD) is characterized by the injury, inflammation, and scarring in the liver owing to excessive alcohol consumption. Currently, ALD is a leading cause for liver transplantation. Therefore, extensive studies (in vitro, in experimental ALD models and in humans) are needed to elucidate pathological features and pathogenic mechanisms underlying ALD. Notably, oxidative changes in the liver have been recognized as a signature trait of ALD. Progression of ALD is linked to the generation of highly reactive free radicals by reactions involving ethanol and its metabolites. Furthermore, hepatic oxidative stress promotes tissue injury and, in turn, stimulates inflammatory responses in the liver, forming a pathological loop that promotes the progression of ALD. Accordingly, accumulating further knowledge on the relationship between oxidative stress and inflammation may help establish a viable therapeutic approach for treating ALD.
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Seitz HK, Neuman MG. The History of Alcoholic Liver Disease: From an Unrecognized Disease to One of the Most Frequent Diseases in Hepatology. J Clin Med 2021; 10:858. [PMID: 33669694 PMCID: PMC7921942 DOI: 10.3390/jcm10040858] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 02/10/2021] [Accepted: 02/13/2021] [Indexed: 02/06/2023] Open
Abstract
This review describes the history of alcoholic liver disease from the beginning of the 1950s until now. It details how the hepatotoxicity of alcohol was discovered by epidemiology and basic research primarily by using new feeding techniques in rodents and primates. The article also recognizes the pioneering work of scientists who contributed to the understanding of the pathophysiology of alcoholic liver disease. In addition, clinical aspects, such as the development of diagnostics and treatment options for alcoholic liver disease, are discussed. Up-to-date knowledge of the mechanism of the disease in 2020 is presented.
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Affiliation(s)
- Helmut K. Seitz
- Centre of Liver and Alcohol Diseases, Ethianum Clinic, 69115 Heidelberg, Germany
- Faculty of Medicine, University of Heidelberg, 69117 Heidelberg, Germany
| | - Manuela G. Neuman
- In Vitro Drug Safety and Biotechnology and the Department of Pharmacology and Toxicology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5G 1L5, Canada;
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Inhibition of androgen/AR signaling inhibits diethylnitrosamine (DEN) induced tumour initiation and remodels liver immune cell networks. Sci Rep 2021; 11:3646. [PMID: 33574348 PMCID: PMC7878907 DOI: 10.1038/s41598-021-82252-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 01/11/2021] [Indexed: 12/13/2022] Open
Abstract
A promotional role for androgen receptor (AR) signaling in hepatocellular carcinogenesis is emerging. In pre-clinical models, including diethylnitrosamine- (DEN-) induced hepatocellular carcinoma (HCC), anti-androgen therapies delay hepatocarcinogenesis. However, pharmacologic anti-androgen therapy in advanced HCC patients fails, suggesting that AR plays a role in HCC onset. This study aims to characterize AR expression and function throughout DEN-induced liver inflammation and carcinogenesis and evaluate the efficacy of prophylactic AR antagonism to prevent hepatocarcinogenesis. We demonstrate that pharmacologic AR antagonism with enzalutamide inhibits hepatocellular carcinogenesis. With enzalutamide treatment, we observe decreased CYP2E1 expression, reducing DEN-induced hepatocyte death and DNA ethyl-adducts. AR protein expression analyses show that DEN causes an initial upregulation of AR in portal fibroblasts and leukocytes, but not hepatocytes, suggesting that hepatocyte-autonomous AR signaling is not essential for DEN-induced carcinogenesis. Ablating androgen signaling by surgical castration reduced pre-carcinogen Kupffer cell populations but did not alter DEN-mediated immune cell recruitment nor AR expression. In this study, we identified that anti-androgen interventions modulate mutagenic DNA adducts, tumour initiation, and immune cell composition. Additionally, we find that AR expression in hepatocytes is not present during nor required for early DEN-mediated carcinogenesis.
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Abstract
Hepatocellular carcinoma (HCC) is associated with chronic inflammation and fibrosis arising from different etiologies, including hepatitis B and C and alcoholic and nonalcoholic fatty liver diseases. The inflammatory cytokines tumor necrosis factor-α and interleukin-6 and their downstream targets nuclear factor kappa B (NF-κB), c-Jun N-terminal kinase (JNK), and signal transducer and activator of transcription 3 drive inflammation-associated HCC. Further, while adaptive immunity promotes immune surveillance to eradicate early HCC, adaptive immune cells, such as CD8+ T cells, Th17 cells, and B cells, can also stimulate HCC development. Thus, the role of the hepatic immune system in HCC development is a highly complex topic. This review highlights the role of cytokine signals, NF-κB, JNK, innate and adaptive immunity, and hepatic stellate cells in HCC and discusses whether these pathways could be therapeutic targets. The authors will also discuss cholangiocarcinoma and liver metastasis because biliary inflammation and tumor-associated stroma are essential for cholangiocarcinoma development and because primary tumor-derived inflammatory mediators promote the formation of a "premetastasis niche" in the liver.
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Affiliation(s)
- Yoon Mee Yang
- Division of Digestive and Liver Diseases, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California
| | - So Yeon Kim
- Division of Digestive and Liver Diseases, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California
| | - Ekihiro Seki
- Division of Digestive and Liver Diseases, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California
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Tomato lycopene prevention of alcoholic fatty liver disease and hepatocellular carcinoma development. Chronic Dis Transl Med 2018; 4:211-224. [PMID: 30603740 PMCID: PMC6308920 DOI: 10.1016/j.cdtm.2018.11.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Indexed: 12/18/2022] Open
Abstract
Alcoholic liver disease (ALD) is a major cause of morbidity and mortality worldwide. The incidence of hepatocellular carcinoma (HCC) is increasing in the United States, and chronic, excessive alcohol consumption is responsible for 32%–45% of all the liver cancer cases in the United States. Avoidance of chronic or excessive alcohol intake is the best protection against alcohol-related liver injury; however, the social presence and addictive power of alcohol are strong. Induction of the cytochrome P450 2E1 (CYP2E1) enzyme by chronic and excessive alcohol intake is known to play a role in the pathogenesis of ALD. High intake of tomatoes, rich in the carotenoid lycopene, is associated with a decreased risk of chronic disease. The review will overview the prevention of ALD and HCC through dietary tomato rich in lycopene as an effective intervention strategy and the crucial role of CYP2E1 induction as a molecular target. The review also indicates a need for caution among individuals consuming both alcohol and high dose lycopene as a dietary supplement.
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Seitz HK, Bataller R, Cortez-Pinto H, Gao B, Gual A, Lackner C, Mathurin P, Mueller S, Szabo G, Tsukamoto H. Alcoholic liver disease. Nat Rev Dis Primers 2018; 4:16. [PMID: 30115921 DOI: 10.1038/s41572-018-0014-7] [Citation(s) in RCA: 643] [Impact Index Per Article: 107.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Alcoholic liver disease (ALD) is the most prevalent type of chronic liver disease worldwide. ALD can progress from alcoholic fatty liver (AFL) to alcoholic steatohepatitis (ASH), which is characterized by hepatic inflammation. Chronic ASH can eventually lead to fibrosis and cirrhosis and in some cases hepatocellular cancer (HCC). In addition, severe ASH (with or without cirrhosis) can lead to alcoholic hepatitis, which is an acute clinical presentation of ALD that is associated with liver failure and high mortality. Most individuals consuming >40 g of alcohol per day develop AFL; however, only a subset of individuals will develop more advanced disease. Genetic, epigenetic and non-genetic factors might explain the considerable interindividual variation in ALD phenotype. The pathogenesis of ALD includes hepatic steatosis, oxidative stress, acetaldehyde-mediated toxicity and cytokine and chemokine-induced inflammation. Diagnosis of ALD involves assessing patients for alcohol use disorder and signs of advanced liver disease. The degree of AFL and liver fibrosis can be determined by ultrasonography, transient elastography, MRI, measurement of serum biomarkers and liver biopsy histology. Alcohol abstinence achieved by psychosomatic intervention is the best treatment for all stages of ALD. In the case of advanced disease such as cirrhosis or HCC, liver transplantation may be required. Thus, new therapies are urgently needed.
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Affiliation(s)
- Helmut K Seitz
- Centre of Alcohol Research (CAR),, University of Heidelberg, Heidelberg and Department of Medicine, Salem Medical Center, Heidelberg, Germany.
| | - Ramon Bataller
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, Pittsburgh Liver Research Center, University of Pittsburgh, Pittsburgh, PA, USA
| | - Helena Cortez-Pinto
- Departmento de Gastroenterologia, CHLN, Laboratorio de Nutricão, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
| | - Bin Gao
- Laboratory of Liver Diseases, National Institute on Alcohol Abuse and Alcoholism, NIH, Bethesda, MD, USA
| | - Antoni Gual
- Addiction Unit, Neuroscience Institute Hospital Clinic, IDIBAPS, Barcelona, Spain
| | - Carolin Lackner
- Institute of Pathology, Medical University of Graz, Graz, Austria
| | - Philippe Mathurin
- Service des Maladies de l'Appareil Digestif, Universite Lille 2 and INSERM U795, Lille, France
| | - Sebastian Mueller
- Centre of Alcohol Research (CAR),, University of Heidelberg, Heidelberg and Department of Medicine, Salem Medical Center, Heidelberg, Germany
| | - Gyongyi Szabo
- Department of Medicine, University of Massachusetts Medical School, Worcester, MA, USA
| | - Hidekazu Tsukamoto
- University of Southern California Keck School of Medicine and Greater Los Angeles VA Healthcare System, Los Angeles, CA, USA
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Ramadori P, Cubero FJ, Liedtke C, Trautwein C, Nevzorova YA. Alcohol and Hepatocellular Carcinoma: Adding Fuel to the Flame. Cancers (Basel) 2017; 9:cancers9100130. [PMID: 28946672 PMCID: PMC5664069 DOI: 10.3390/cancers9100130] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 09/15/2017] [Accepted: 09/19/2017] [Indexed: 02/06/2023] Open
Abstract
Primary tumors of the liver represent the fifth most common type of cancer in the world and the third leading cause of cancer-related death. Case-control studies from different countries report that chronic ethanol consumption is associated with an approximately 2-fold increased odds ratio for hepatocellular carcinoma (HCC). Despite the substantial epidemiologic data in humans demonstrating that chronic alcohol consumption is a major risk factor for HCC development, the pathways causing alcohol-induced liver cancer are poorly understood. In this overview, we summarize the epidemiological evidence for the association between alcohol and liver cancer, review the genetic, oncogenic, and epigenetic factors that drive HCC development synergistically with ethanol intake and discuss the essential molecular and metabolic pathways involved in alcohol-induced liver tumorigenesis.
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Affiliation(s)
- Pierluigi Ramadori
- Department of Internal Medicine III, University Hospital RWTH Aachen, Pauwelsstrasse 30, D-52074 Aachen, Germany.
| | - Francisco Javier Cubero
- Department of Immunology, Complutense University School of Medicine, Madrid 28040, Spain.
- 13 de Octubre Health Research Institute (imas12), Madrid 28041, Spain.
| | - Christian Liedtke
- Department of Internal Medicine III, University Hospital RWTH Aachen, Pauwelsstrasse 30, D-52074 Aachen, Germany.
| | - Christian Trautwein
- Department of Internal Medicine III, University Hospital RWTH Aachen, Pauwelsstrasse 30, D-52074 Aachen, Germany.
| | - Yulia A Nevzorova
- Department of Internal Medicine III, University Hospital RWTH Aachen, Pauwelsstrasse 30, D-52074 Aachen, Germany.
- Department of Animal Physiology II, Faculty of Biology, Complutense University, Madrid 28040, Spain.
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Erectile Dysfunction Drugs Changed the Protein Expressions and Activities of Drug-Metabolising Enzymes in the Liver of Male Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:4970906. [PMID: 27800121 PMCID: PMC5075309 DOI: 10.1155/2016/4970906] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Revised: 07/21/2016] [Accepted: 08/15/2016] [Indexed: 11/18/2022]
Abstract
Erectile dysfunction (ED) is a major health problem and is mainly associated with the persistent inability of men to maintain sufficient erection for satisfactory sexual performance. Millions of men are using sildenafil, vardenafil, and/or tadalafil for ED treatment. Cytochrome P450s (CYPs) play a central role in the metabolism of a wide range of xenobiotics as well as endogenous compounds. Susceptibility of individuals to the adverse effects of different drugs is mainly dependent on the expression of CYPs proteins. Therefore, changes in activities of phase I drug-metabolising enzymes [arylhydrocarbon hydroxylase (AHH), dimethylnitrosamine N-demethylase (DMN-dI), 7-ethoxycoumarin-O-deethylase (ECOD), and ethoxyresorufin-O-deethylase ((EROD)] and the protein expression of different CYPs isozymes (CYP1A2, CYP2E1, CYP2B1/2, CYP3A4, CYP2C23, and CYP2C6) were determined after treatment of male rats with either low or high doses of sildenafil (Viagra), tadalafil (Cialis), and/or vardenafil (Levitra) for 3 weeks. The present study showed that low doses of tadalafil and vardenafil increased DMN-dI activity by 32 and 23%, respectively. On the other hand, high doses of tadalafil, vardenafil, and sildenafil decreased such activity by 50, 56, and 52%, respectively. In addition, low doses of tadalafil and vardenafil induced the protein expression of CYP2E1. On the other hand, high doses of either tadalafil or sildenafil were more potent inhibitors to CYP2E1 expression than vardenafil. Moreover, low doses of both vardenafil and sildenafil markedly increased AHH activity by 162 and 247%, respectively, whereas high doses of tadalafil, vardenafil, and sildenafil inhibited such activity by 36, 49, and 57% and inhibited the EROD activity by 39, 49, and 33%, respectively. Low and high doses of tadalafil, vardenafil, and sildenafil inhibited the activity of NADPH-cytochrome c reductase as well as its protein expression. In addition, such drugs inhibited the expression of CYP B1/2 along with its corresponding enzyme marker ECOD activity. It is concluded that changes in the expression and activity of phase I drug-metabolising enzymes could change the normal metabolic pathways and might enhance the deleterious effects of exogenous as well as endogenous compounds.
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Teufel U, Peccerella T, Engelmann G, Bruckner T, Flechtenmacher C, Millonig G, Stickel F, Hoffmann GF, Schirmacher P, Mueller S, Bartsch H, Seitz HK. Detection of carcinogenic etheno-DNA adducts in children and adolescents with non-alcoholic steatohepatitis (NASH). Hepatobiliary Surg Nutr 2016; 4:426-35. [PMID: 26734629 DOI: 10.3978/j.issn.2304-3881.2015.12.03] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Carcinogenic exocyclic-DNA adducts like 1,N(6)-etheno-2'-deoxyadenosine (εdA) are formed through reactive intermediates of 4-hydroxynonenal (4-HNE) or other lipid peroxidation (LPO) products with the DNA bases A, C, methyl-C and G. High levels of hepatic etheno-DNA adducts have been detected in cancer prone liver diseases including alcoholic liver disease (ALD). In ALD εdA levels correlated significantly with cytochrome P-450 2E1 (CYP2E1) expression which is also induced in non-alcoholic steatohepatitis (NASH). We investigated the occurrence of εdA adducts in children with NASH as a DNA damage marker. METHODS Liver biopsies from 21 children/adolescents with histologically proven NASH were analysed for hepatic fat content, inflammation, and fibrosis. εdA levels in DNA, CYP2E1-expression and protein bound 4-hydroxynonenal (HNE) were semi-quantitatively evaluated by immunohistochemistry. RESULTS Among 21 NASH children, εdA levels in the liver were high in 3, moderate in 5, weak in 9 and not elevated in 4 patients. There was a positive correlation between CYP2E1 and protein-bound 4-HNE (r=0.60; P=0.008) and a trend for a positive relationship for CYP2E1 vs. staining intensity of εdA (r=0.45; P=0.06). Inflammatory activity and fibrosis correlated significantly (r=0.49, P=0.023). CONCLUSIONS Our results demonstrate for the first time the presence of elevated carcinogenic etheno-DNA lesions (εdA) in the majority (17/21) of liver biopsies from young NASH patients. Our data suggest that LPO-derived etheno-adducts are implicated in NASH. Whether these adducts may serve as predictive risk markers in NASH children to develop hepatocellular cancer later in life remains to be investigated.
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Affiliation(s)
- Ulrike Teufel
- 1 Department of Paediatrics, University of Heidelberg, Heidelberg, Germany ; 2 Alcohol Research Centre, University of Heidelberg and Department of Medicine (Gastroenterology & Hepatology), Salem Medical Centre, Heidelberg, Germany ; 3 Institute of Medical Biometry and Informatics, 4 Department of Pathology, University of Heidelberg, Heidelberg, Germany ; 5 Hepatology Unit, Clinic Beau-Site Hirslanden, Bern, Switzerland ; 6 Erstwhile: Division of Toxicology and Cancer Risk Factors, German Cancer Research Centre (DKFZ), Heidelberg, Germany
| | - Teresa Peccerella
- 1 Department of Paediatrics, University of Heidelberg, Heidelberg, Germany ; 2 Alcohol Research Centre, University of Heidelberg and Department of Medicine (Gastroenterology & Hepatology), Salem Medical Centre, Heidelberg, Germany ; 3 Institute of Medical Biometry and Informatics, 4 Department of Pathology, University of Heidelberg, Heidelberg, Germany ; 5 Hepatology Unit, Clinic Beau-Site Hirslanden, Bern, Switzerland ; 6 Erstwhile: Division of Toxicology and Cancer Risk Factors, German Cancer Research Centre (DKFZ), Heidelberg, Germany
| | - Guido Engelmann
- 1 Department of Paediatrics, University of Heidelberg, Heidelberg, Germany ; 2 Alcohol Research Centre, University of Heidelberg and Department of Medicine (Gastroenterology & Hepatology), Salem Medical Centre, Heidelberg, Germany ; 3 Institute of Medical Biometry and Informatics, 4 Department of Pathology, University of Heidelberg, Heidelberg, Germany ; 5 Hepatology Unit, Clinic Beau-Site Hirslanden, Bern, Switzerland ; 6 Erstwhile: Division of Toxicology and Cancer Risk Factors, German Cancer Research Centre (DKFZ), Heidelberg, Germany
| | - Thomas Bruckner
- 1 Department of Paediatrics, University of Heidelberg, Heidelberg, Germany ; 2 Alcohol Research Centre, University of Heidelberg and Department of Medicine (Gastroenterology & Hepatology), Salem Medical Centre, Heidelberg, Germany ; 3 Institute of Medical Biometry and Informatics, 4 Department of Pathology, University of Heidelberg, Heidelberg, Germany ; 5 Hepatology Unit, Clinic Beau-Site Hirslanden, Bern, Switzerland ; 6 Erstwhile: Division of Toxicology and Cancer Risk Factors, German Cancer Research Centre (DKFZ), Heidelberg, Germany
| | - Christa Flechtenmacher
- 1 Department of Paediatrics, University of Heidelberg, Heidelberg, Germany ; 2 Alcohol Research Centre, University of Heidelberg and Department of Medicine (Gastroenterology & Hepatology), Salem Medical Centre, Heidelberg, Germany ; 3 Institute of Medical Biometry and Informatics, 4 Department of Pathology, University of Heidelberg, Heidelberg, Germany ; 5 Hepatology Unit, Clinic Beau-Site Hirslanden, Bern, Switzerland ; 6 Erstwhile: Division of Toxicology and Cancer Risk Factors, German Cancer Research Centre (DKFZ), Heidelberg, Germany
| | - Gunda Millonig
- 1 Department of Paediatrics, University of Heidelberg, Heidelberg, Germany ; 2 Alcohol Research Centre, University of Heidelberg and Department of Medicine (Gastroenterology & Hepatology), Salem Medical Centre, Heidelberg, Germany ; 3 Institute of Medical Biometry and Informatics, 4 Department of Pathology, University of Heidelberg, Heidelberg, Germany ; 5 Hepatology Unit, Clinic Beau-Site Hirslanden, Bern, Switzerland ; 6 Erstwhile: Division of Toxicology and Cancer Risk Factors, German Cancer Research Centre (DKFZ), Heidelberg, Germany
| | - Felix Stickel
- 1 Department of Paediatrics, University of Heidelberg, Heidelberg, Germany ; 2 Alcohol Research Centre, University of Heidelberg and Department of Medicine (Gastroenterology & Hepatology), Salem Medical Centre, Heidelberg, Germany ; 3 Institute of Medical Biometry and Informatics, 4 Department of Pathology, University of Heidelberg, Heidelberg, Germany ; 5 Hepatology Unit, Clinic Beau-Site Hirslanden, Bern, Switzerland ; 6 Erstwhile: Division of Toxicology and Cancer Risk Factors, German Cancer Research Centre (DKFZ), Heidelberg, Germany
| | - Georg F Hoffmann
- 1 Department of Paediatrics, University of Heidelberg, Heidelberg, Germany ; 2 Alcohol Research Centre, University of Heidelberg and Department of Medicine (Gastroenterology & Hepatology), Salem Medical Centre, Heidelberg, Germany ; 3 Institute of Medical Biometry and Informatics, 4 Department of Pathology, University of Heidelberg, Heidelberg, Germany ; 5 Hepatology Unit, Clinic Beau-Site Hirslanden, Bern, Switzerland ; 6 Erstwhile: Division of Toxicology and Cancer Risk Factors, German Cancer Research Centre (DKFZ), Heidelberg, Germany
| | - Peter Schirmacher
- 1 Department of Paediatrics, University of Heidelberg, Heidelberg, Germany ; 2 Alcohol Research Centre, University of Heidelberg and Department of Medicine (Gastroenterology & Hepatology), Salem Medical Centre, Heidelberg, Germany ; 3 Institute of Medical Biometry and Informatics, 4 Department of Pathology, University of Heidelberg, Heidelberg, Germany ; 5 Hepatology Unit, Clinic Beau-Site Hirslanden, Bern, Switzerland ; 6 Erstwhile: Division of Toxicology and Cancer Risk Factors, German Cancer Research Centre (DKFZ), Heidelberg, Germany
| | - Sebastian Mueller
- 1 Department of Paediatrics, University of Heidelberg, Heidelberg, Germany ; 2 Alcohol Research Centre, University of Heidelberg and Department of Medicine (Gastroenterology & Hepatology), Salem Medical Centre, Heidelberg, Germany ; 3 Institute of Medical Biometry and Informatics, 4 Department of Pathology, University of Heidelberg, Heidelberg, Germany ; 5 Hepatology Unit, Clinic Beau-Site Hirslanden, Bern, Switzerland ; 6 Erstwhile: Division of Toxicology and Cancer Risk Factors, German Cancer Research Centre (DKFZ), Heidelberg, Germany
| | - Helmut Bartsch
- 1 Department of Paediatrics, University of Heidelberg, Heidelberg, Germany ; 2 Alcohol Research Centre, University of Heidelberg and Department of Medicine (Gastroenterology & Hepatology), Salem Medical Centre, Heidelberg, Germany ; 3 Institute of Medical Biometry and Informatics, 4 Department of Pathology, University of Heidelberg, Heidelberg, Germany ; 5 Hepatology Unit, Clinic Beau-Site Hirslanden, Bern, Switzerland ; 6 Erstwhile: Division of Toxicology and Cancer Risk Factors, German Cancer Research Centre (DKFZ), Heidelberg, Germany
| | - Helmut K Seitz
- 1 Department of Paediatrics, University of Heidelberg, Heidelberg, Germany ; 2 Alcohol Research Centre, University of Heidelberg and Department of Medicine (Gastroenterology & Hepatology), Salem Medical Centre, Heidelberg, Germany ; 3 Institute of Medical Biometry and Informatics, 4 Department of Pathology, University of Heidelberg, Heidelberg, Germany ; 5 Hepatology Unit, Clinic Beau-Site Hirslanden, Bern, Switzerland ; 6 Erstwhile: Division of Toxicology and Cancer Risk Factors, German Cancer Research Centre (DKFZ), Heidelberg, Germany
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McKillop IH, Schrum LW, Thompson KJ. Role of alcohol in the development and progression of hepatocellular carcinoma. Hepat Oncol 2016; 3:29-43. [PMID: 30191025 PMCID: PMC6095421 DOI: 10.2217/hep.15.40] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 10/22/2015] [Indexed: 02/06/2023] Open
Abstract
Hepatocellular carcinoma (HCC) is a significant cause of cancer-related morbidity and mortality. Chronic, heavy ethanol consumption is a major risk for developing the worsening liver pathologies that culminate in hepatic cirrhosis, the leading risk factor for developing HCC. A significant body of work reports the biochemical and pathological consequences of ethanol consumption and metabolism during hepatocarcinogeneis. The systemic effects of ethanol means organ system interactions are equally important in understanding the initiation and progression of HCC within the alcoholic liver. This review aims to summarize the effects of ethanol-ethanol metabolism during the pathogenesis of alcoholic liver disease, the progression toward HCC and the importance of ethanol as a comorbid factor for HCC development.
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Affiliation(s)
- Iain H McKillop
- Department of Surgery, Carolinas Medical Center, Charlotte, NC 28203 USA
| | - Laura W Schrum
- Department of Medicine, Carolinas Medical Center, Charlotte, NC 28203 USA
| | - Kyle J Thompson
- Department of Surgery, Carolinas Medical Center, Charlotte, NC 28203 USA
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12
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Rafacho BPM, Stice CP, Liu C, Greenberg AS, Ausman LM, Wang XD. Inhibition of diethylnitrosamine-initiated alcohol-promoted hepatic inflammation and precancerous lesions by flavonoid luteolin is associated with increased sirtuin 1 activity in mice. Hepatobiliary Surg Nutr 2015; 4:124-34. [PMID: 26005679 DOI: 10.3978/j.issn.2304-3881.2014.08.06] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Accepted: 09/21/2014] [Indexed: 12/12/2022]
Abstract
BACKGROUND Chronic and excessive alcohol consumption is an established risk for hepatic inflammation and carcinogenesis. Luteolin is one of the most common flavonoids present in plants and has potential beneficial effects against cancer. In this study, we examined the effect and potential mechanisms of luteolin supplementation in a carcinogen initiated alcohol-promoted pre-neoplastic liver lesion mouse model. METHODS C57BL/6 mice were injected with diethylnitrosamine (DEN) [i.p. 25 mg/kg of body weight (BW)] at 14 days of age. At 8 weeks of age mice were group pair-fed with Lieber-DeCarli liquid control diet or alcoholic diet [ethanol (EtOH) diet, 27% total energy from ethanol] and supplemented with a dose of 30 mg luteolin/kg BW per day for 21 days. RESULTS DEN-injected mice fed EtOH diet displayed a significant induction of pre-neoplastic lesions, a marker associated with presence of steatosis and inflammation. Dietary luteolin significantly reduced the severity and incidence of hepatic inflammatory foci and steatosis in DEN-injected mice fed EtOH diet, as well the presence of preneoplastic lesions. There was no difference on hepatic protein levels of sirtuin 1 (SIRT1) among all groups; however, luteolin supplementation significantly reversed alcohol-reduced SIRT1 activity assessed by the ratio of acetylated and total forkhead box protein O1 (FoXO1) and SIRT1 target proliferator-activated receptor gamma, coactivator 1 alpha (PGC1α). CONCLUSIONS Dietary intake of luteolin prevents alcohol promoted pre-neoplastic lesions, potentially mediated by SIRT1 signaling pathway.
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Affiliation(s)
- Bruna Paola Murino Rafacho
- 1 Nutrition and Cancer Biology Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging (HNRCA) at Tufts University, Boston, MA, USA ; 2 Department of Internal Medicine, Botucatu School of Medicine, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil ; 3 Obesity and Metabolism Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging (HNRCA) at Tufts University, Boston, MA, USA ; 4 Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA 02111, USA
| | - Camilla Peach Stice
- 1 Nutrition and Cancer Biology Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging (HNRCA) at Tufts University, Boston, MA, USA ; 2 Department of Internal Medicine, Botucatu School of Medicine, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil ; 3 Obesity and Metabolism Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging (HNRCA) at Tufts University, Boston, MA, USA ; 4 Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA 02111, USA
| | - Chun Liu
- 1 Nutrition and Cancer Biology Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging (HNRCA) at Tufts University, Boston, MA, USA ; 2 Department of Internal Medicine, Botucatu School of Medicine, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil ; 3 Obesity and Metabolism Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging (HNRCA) at Tufts University, Boston, MA, USA ; 4 Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA 02111, USA
| | - Andrew S Greenberg
- 1 Nutrition and Cancer Biology Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging (HNRCA) at Tufts University, Boston, MA, USA ; 2 Department of Internal Medicine, Botucatu School of Medicine, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil ; 3 Obesity and Metabolism Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging (HNRCA) at Tufts University, Boston, MA, USA ; 4 Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA 02111, USA
| | - Lynne M Ausman
- 1 Nutrition and Cancer Biology Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging (HNRCA) at Tufts University, Boston, MA, USA ; 2 Department of Internal Medicine, Botucatu School of Medicine, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil ; 3 Obesity and Metabolism Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging (HNRCA) at Tufts University, Boston, MA, USA ; 4 Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA 02111, USA
| | - Xiang-Dong Wang
- 1 Nutrition and Cancer Biology Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging (HNRCA) at Tufts University, Boston, MA, USA ; 2 Department of Internal Medicine, Botucatu School of Medicine, São Paulo State University (UNESP), Botucatu, São Paulo, Brazil ; 3 Obesity and Metabolism Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging (HNRCA) at Tufts University, Boston, MA, USA ; 4 Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA 02111, USA
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13
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Stice CP, Liu C, Aizawa K, Greenberg AS, Ausman LM, Wang XD. Dietary tomato powder inhibits alcohol-induced hepatic injury by suppressing cytochrome p450 2E1 induction in rodent models. Arch Biochem Biophys 2015; 572:81-88. [PMID: 25592162 DOI: 10.1016/j.abb.2015.01.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Revised: 12/21/2014] [Accepted: 01/05/2015] [Indexed: 02/06/2023]
Abstract
Chronic and excessive alcohol consumption leads to the development of alcoholic liver disease (ALD) and greatly increases the risk of liver cancer. Induction of the cytochrome p450 2E1 (CYP2E1) enzyme by chronic and excessive alcohol intake is known to play a role in the pathogenesis of ALD. High intake of tomatoes, rich in the carotenoid lycopene, is associated with a decreased risk of chronic disease. We investigated the effects of whole tomato (tomato powder, TP), partial tomato (tomato extract, TE), and purified lycopene (LYC) against ALD development in rats. Of the three supplements, only TP reduced the severity of alcohol-induced steatosis, hepatic inflammatory foci, and CYP2E1 protein levels. TE had no effect on these outcomes and LYC greatly increased inflammatory foci in alcohol-fed rats. To further support the protective effect of TP against ALD, TP was supplemented in a carcinogen (diethylnitrosamine, DEN)-initiated alcohol-promoted mouse model. In addition to reduced steatosis and inflammatory foci, TP abolished the presence of preneoplastic foci of altered hepatocytes in DEN-injected mice fed alcohol. These reductions were associated with decreased hepatic CYP2E1 protein levels, restored levels of peroxisome proliferator-activated receptor-α and downstream gene expression, decreased inflammatory gene expression, and reduced endoplasmic reticulum stress markers. These data provide strong evidence for TP as an effective whole food prevention strategy against ALD.
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Affiliation(s)
- Camilla P Stice
- Nutrition and Cancer Biology Laboratory, Jean-Mayer United States Department of Agriculture Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA; Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, USA
| | - Chun Liu
- Nutrition and Cancer Biology Laboratory, Jean-Mayer United States Department of Agriculture Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
| | - Koichi Aizawa
- Nutrition and Cancer Biology Laboratory, Jean-Mayer United States Department of Agriculture Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
| | - Andrew S Greenberg
- Obesity and Metabolism Laboratory, Jean-Mayer United States Department of Agriculture Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA; Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, USA
| | - Lynne M Ausman
- Nutrition and Cancer Biology Laboratory, Jean-Mayer United States Department of Agriculture Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA; Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, USA
| | - Xiang-Dong Wang
- Nutrition and Cancer Biology Laboratory, Jean-Mayer United States Department of Agriculture Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA; Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, USA.
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Linhart K, Bartsch H, Seitz HK. The role of reactive oxygen species (ROS) and cytochrome P-450 2E1 in the generation of carcinogenic etheno-DNA adducts. Redox Biol 2014; 3:56-62. [PMID: 25462066 PMCID: PMC4297928 DOI: 10.1016/j.redox.2014.08.009] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Revised: 08/19/2014] [Accepted: 08/25/2014] [Indexed: 12/30/2022] Open
Abstract
Exocyclic etheno-DNA adducts are mutagenic and carcinogenic and are formed by the reaction of lipidperoxidation (LPO) products such as 4-hydoxynonenal or malondialdehyde with DNA bases. LPO products are generated either via inflammation driven oxidative stress or via the induction of cytochrome P-450 2E1 (CYP2E1). In the liver CYP2E1 is induced by various compounds including free fatty acids, acetone and ethanol. Increased levels of CYP2E1 and thus, oxidative stress are observed in the liver of patients with non-alcoholic steatohepatitis (NASH) as well as in the chronic alcoholic. In addition, chronic ethanol ingestion also increases CYP2E1 in the mucosa of the oesophagus and colon. In all these tissues CYP2E1 correlates significantly with the levels of carcinogenic etheno-DNA adducts. In contrast, in patients with non-alcoholic steatohepatitis (NASH) hepatic etheno-DNA adducts do not correlate with CYP2E1 indicating that in NASH etheno-DNA adducts formation is predominately driven by inflammation rather than by CYP2E1 induction. Since etheno-DNA adducts are strong mutagens producing various types of base pair substitution mutations as well as other types of genetic damage, it is strongly believed that they are involved in ethanol mediated carcinogenesis primarily driven by the induction of CYP2E1. Cytochrome P-450 2E1 is induced following chronic ethanol ingestion. CYP2E1 correlates with carcinogenic etheno-DNA formation. CYP2E1 and oxidative stress are important mechanisms in alcohol mediated carcinogenesis in the liver, undefined and colon. In NASH hepatic etheno-DNA adducts occur but possible due to inflammation.
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Affiliation(s)
- Kirsten Linhart
- Centre of Alcohol Research, University of Heidelberg, Heidelberg, Germany
| | - Helmut Bartsch
- Department of Medicine (Gastroenterology & Hepatology), Salem Medical Centre, Heidelberg, Germany
| | - Helmut K Seitz
- Division of Toxicology and Cancer Risk Factors, German Cancer Research Centre (DKFZ), Heidelberg, Germany.
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15
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Linhart K, Bartsch H, Seitz HK. The role of reactive oxygen species (ROS) and cytochrome P-450 2E1 in the generation of carcinogenic etheno-DNA adducts. Redox Biol 2014. [PMID: 25462066 DOI: 10.1016/j.redo-x.2014.08.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
Abstract
Exocyclic etheno-DNA adducts are mutagenic and carcinogenic and are formed by the reaction of lipidperoxidation (LPO) products such as 4-hydoxynonenal or malondialdehyde with DNA bases. LPO products are generated either via inflammation driven oxidative stress or via the induction of cytochrome P-450 2E1 (CYP2E1). In the liver CYP2E1 is induced by various compounds including free fatty acids, acetone and ethanol. Increased levels of CYP2E1 and thus, oxidative stress are observed in the liver of patients with non-alcoholic steatohepatitis (NASH) as well as in the chronic alcoholic. In addition, chronic ethanol ingestion also increases CYP2E1 in the mucosa of the oesophagus and colon. In all these tissues CYP2E1 correlates significantly with the levels of carcinogenic etheno-DNA adducts. In contrast, in patients with non-alcoholic steatohepatitis (NASH) hepatic etheno-DNA adducts do not correlate with CYP2E1 indicating that in NASH etheno-DNA adducts formation is predominately driven by inflammation rather than by CYP2E1 induction. Since etheno-DNA adducts are strong mutagens producing various types of base pair substitution mutations as well as other types of genetic damage, it is strongly believed that they are involved in ethanol mediated carcinogenesis primarily driven by the induction of CYP2E1.
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Affiliation(s)
- Kirsten Linhart
- Centre of Alcohol Research, University of Heidelberg, Heidelberg, Germany
| | - Helmut Bartsch
- Department of Medicine (Gastroenterology & Hepatology), Salem Medical Centre, Heidelberg, Germany
| | - Helmut K Seitz
- Division of Toxicology and Cancer Risk Factors, German Cancer Research Centre (DKFZ), Heidelberg, Germany.
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Wang H, Zheng S, Tu Y, Zhang Y. [Screening and identification of novel drug-resistant genes in CD133+ and CD133- lung adenosarcoma cells using cDNA microarray]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2014; 17:437-43. [PMID: 24949682 PMCID: PMC6000102 DOI: 10.3779/j.issn.1009-3419.2014.06.01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
背景与目的 肿瘤干细胞可能是肿瘤多药耐药的主要原因,CD133是目前较为公认的肿瘤干细胞标记物。本研究旨在应用功能分类基因芯片筛选CD133+和CD133-肺腺癌细胞中差异表达的肿瘤耐药基因,寻求新的肺癌耐药相关基因。 方法 免疫磁珠分选法分选A549细胞,采用功能分类基因芯片筛选CD133+和CD133-肺腺癌细胞中差异表达的肿瘤耐药基因,并使用RT-qPCR验证。顺铂半数有效抑制浓度(half inhibiting concentration, IC50)、阿霉素IC50作用A549细胞48 h后,RT-qPCR检测肿瘤耐药基因CYP2C19、CYP2D6、CYP2E1、GSK3α、PPARα和PPARβ/δ的表达变化。 结果 共筛查出31个差异表达的肿瘤耐药基因,与CD133-细胞相比,CD133+细胞有30个基因表达上调,1个基因表达下调。RT-qPCR结果与芯片一致。A549细胞经1.97 μg/mL顺铂或0.61 μg/mL阿霉素作用48 h后,CYP2C19、CYP2D6、CYP2E1、GSK3α、PPARα和PPARβ/δ等肿瘤耐药基因表达上调。 结论 利用功能分类基因芯片筛选出31个可能与CD133+肺腺癌细胞耐药相关的基因,其中CYP2C19、CYP2D6、CYP2E1、GSK3α、PPARα和PPARβ/δ为新发现的肺癌耐药相关基因。
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Affiliation(s)
- Hongyan Wang
- Department of Pathology, Guangzhou Medical University, Guangzhou 510182, China
| | - Shaoqiu Zheng
- Department of Pathology, Guangzhou Medical University, Guangzhou 510182, China
| | - Yongsheng Tu
- Department of Physiology, Guangzhou Medical University, Guangzhou 510182, China
| | - Yajie Zhang
- Department of Pathology, Guangzhou Medical University, Guangzhou 510182, China
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Shearn CT, Backos DS, Orlicky DJ, Smathers-McCullough RL, Petersen DR. Identification of 5' AMP-activated kinase as a target of reactive aldehydes during chronic ingestion of high concentrations of ethanol. J Biol Chem 2014; 289:15449-62. [PMID: 24722988 DOI: 10.1074/jbc.m113.543942] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The production of reactive aldehydes including 4-hydroxy-2-nonenal (4-HNE) is a key component of the pathogenesis in a spectrum of chronic inflammatory hepatic diseases including alcoholic liver disease (ALD). One consequence of ALD is increased oxidative stress and altered β-oxidation in hepatocytes. A major regulator of β-oxidation is 5' AMP protein kinase (AMPK). In an in vitro cellular model, we identified AMPK as a direct target of 4-HNE adduction resulting in inhibition of both H2O2 and 5-aminoimidazole-4-carboxyamide ribonucleoside (AICAR)-induced downstream signaling. By employing biotin hydrazide capture, it was confirmed that 4-HNE treatment of cells resulted in carbonylation of AMPKα/β, which was not observed in untreated cells. Using a murine model of alcoholic liver disease, treatment with high concentrations of ethanol resulted in an increase in phosphorylated as well as carbonylated AMPKα. Despite increased AMPK phosphorylation, there was no significant change in phosphorylation of acetyl CoA carboxylase. Mass spectrometry identified Michael addition adducts of 4-HNE on Cys(130), Cys(174), Cys(227), and Cys(304) on recombinant AMPKα and Cys(225) on recombinant AMPKβ. Molecular modeling analysis of identified 4-HNE adducts on AMPKα suggest that inhibition of AMPK occurs by steric hindrance of the active site pocket and by inhibition of hydrogen peroxide induced oxidation. The observed inhibition of AMPK by 4-HNE provides a novel mechanism for altered β-oxidation in ALD, and these data demonstrate for the first time that AMPK is subject to regulation by reactive aldehydes in vivo.
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Affiliation(s)
| | | | - David J Orlicky
- Department of Pathology, University of Colorado Denver-Anschutz Medical Campus, Aurora, Colorado 80045 and
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Wu X, Li C, Xing G, Qi X, Ren J. Resveratrol Downregulates Cyp2e1 and Attenuates Chemically Induced Hepatocarcinogenesis in SD Rats. J Toxicol Pathol 2013; 26:385-92. [PMID: 24526811 PMCID: PMC3921921 DOI: 10.1293/tox.2013-0020] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Accepted: 08/13/2013] [Indexed: 01/02/2023] Open
Abstract
Cyp2e1 plays an important role in chemically induced hepatocarcinogenesis. Resveratrol (REV) is known to prevent diethylnitrosamine (DEN)-induced hepatocarcinogenesis, but its effects on this process induced by DEN and 2-acetylaminofluorene (2-AAF) and the role of Cyp2e1 remain unclear. In this study, glutathione S-transferase placental form (GST-P)-positive foci were used as a marker of hepatocarcinogenesis. REV or diallyl disulfide (DADS, an inhibitor of Cyp2e1) significantly reduced both the area and number of GST-P-positive foci induced by DEN and 2-AAF. Treatment with REV or DADS also markedly decreased the expression of Cyp2e1 in the rat liver. By immunohistochemical staining of serial liver sections, we found that the expression of Cyp2e1 in GST-P-positive foci showed three distinct patterns: decreased in GST-P foci, increased in GST-P foci when compared with surrounding liver tissue and mixed type. The number of GST-P foci with increased Cyp2e1 expression was greater than the number of GST-P foci with decreased Cyp2e1. Protein levels of GST-P and Cyp2e1 were also higher in foci compared with surrounding liver tissue. REV or DADS significantly reduced the expression of GST-P and Cyp2e1 in both foci and surrounding liver tissue. Taken together, these results suggested that REV has a significant inhibitory effect on chemically induced hepatocarcinogenesis, which may be attributed to downregulation of Cyp2e1.
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Affiliation(s)
- Xiongfei Wu
- Center for Drug Safety Evaluation and Research, State Key Laboratory of New Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai, 201203, China
| | - Chenggang Li
- Center for Drug Safety Evaluation and Research, State Key Laboratory of New Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai, 201203, China
| | - Guozhen Xing
- Center for Drug Safety Evaluation and Research, State Key Laboratory of New Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai, 201203, China
| | - Xinming Qi
- Center for Drug Safety Evaluation and Research, State Key Laboratory of New Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai, 201203, China
| | - Jin Ren
- Center for Drug Safety Evaluation and Research, State Key Laboratory of New Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Shanghai, 201203, China
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Mueller S. Pharmacological blockage of CYP2E1 and alcohol-mediated liver cancer: is the time ready? Chin J Cancer Res 2013; 25:269-71. [PMID: 23825901 DOI: 10.3978/j.issn.1000-9604.2013.05.01] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Accepted: 05/01/2013] [Indexed: 12/20/2022] Open
Affiliation(s)
- Sebastian Mueller
- Department of Medicine and Alcohol Research Center, Salem Medical Center, University of Heidelberg, Heidelberg 69121, Germany
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