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Onuzulu CD, Lee S, Basu S, Comte J, Hai Y, Hizon N, Chadha S, Fauni MS, Halayko AJ, Pascoe CD, Jones MJ. Novel DNA methylation changes in mouse lungs associated with chronic smoking. Epigenetics 2024; 19:2322386. [PMID: 38436597 PMCID: PMC10913724 DOI: 10.1080/15592294.2024.2322386] [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: 11/14/2023] [Accepted: 02/19/2024] [Indexed: 03/05/2024] Open
Abstract
Smoking is a potent cause of asthma exacerbations, chronic obstructive pulmonary disease (COPD) and many other health defects, and changes in DNA methylation (DNAm) have been identified as a potential link between smoking and these health outcomes. However, most studies of smoking and DNAm have been done using blood and other easily accessible tissues in humans, while evidence from more directly affected tissues such as the lungs is lacking. Here, we identified DNAm patterns in the lungs that are altered by smoking. We used an established mouse model to measure the effects of chronic smoke exposure first on lung phenotype immediately after smoking and then after a period of smoking cessation. Next, we determined whether our mouse model recapitulates previous DNAm patterns observed in smoking humans, specifically measuring DNAm at a candidate gene responsive to cigarette smoke, Cyp1a1. Finally, we carried out epigenome-wide DNAm analyses using the newly released Illumina mouse methylation microarrays. Our results recapitulate some of the phenotypes and DNAm patterns observed in human studies but reveal 32 differentially methylated genes specific to the lungs which have not been previously associated with smoking. The affected genes are associated with nicotine dependency, tumorigenesis and metastasis, immune cell dysfunction, lung function decline, and COPD. This research emphasizes the need to study CS-mediated DNAm signatures in directly affected tissues like the lungs, to fully understand mechanisms underlying CS-mediated health outcomes.
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Affiliation(s)
- Chinonye Doris Onuzulu
- Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Samantha Lee
- Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Sujata Basu
- Biology of Breathing Theme, Children’s Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
- Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Jeannette Comte
- Biology of Breathing Theme, Children’s Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
| | - Yan Hai
- Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Nikho Hizon
- Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Shivam Chadha
- Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Maria Shenna Fauni
- Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Andrew J. Halayko
- Biology of Breathing Theme, Children’s Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
- Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Christopher D. Pascoe
- Biology of Breathing Theme, Children’s Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
- Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Meaghan J. Jones
- Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, Manitoba, Canada
- Biology of Breathing Theme, Children’s Hospital Research Institute of Manitoba, Winnipeg, Manitoba, Canada
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Dhege CT, Kumar P, Choonara YE. Pulmonary drug delivery devices and nanosystems as potential treatment strategies for acute respiratory distress syndrome (ARDS). Int J Pharm 2024; 657:124182. [PMID: 38697584 DOI: 10.1016/j.ijpharm.2024.124182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 04/10/2024] [Accepted: 04/28/2024] [Indexed: 05/05/2024]
Abstract
Despite advances in drug delivery technologies, treating acute respiratory distress syndrome (ARDS) is challenging due to pathophysiological barriers such as lung injury, oedema fluid build-up, and lung inflammation. Active pharmaceutical ingredients (API) can be delivered directly to the lung site of action with the use of aerosol-based drug delivery devices, and this circumvents the hepatic first-pass effect and improves the bioavailability of drugs. This review discusses the various challenges and barriers for pulmonary drug delivery, current interventions for delivery, considerations for effective drug delivery, and the use of nanoparticle drug delivery carriers as potential strategies for delivering therapeutics in ARDS. Nanosystems have the added benefit of entrapping drugs, increase pulmonary drug bioavailability, and using biocompatible and biodegradable excipients that can facilitate targeted and/or controlled delivery. These systems provide an alternative to existing conventional systems. An effective way to deliver drugs for the treatment of ARDS can be by using colloidal systems that are aerosolized or inhaled. Drug distribution to the deeper pulmonary tissues is necessary due to the significant endothelial cell destruction that is prevalent in ARDS. The particle size of nanoparticles (<0.5 μm) makes them ideal candidates for treating ARDS as they can reach the alveoli. A look into the various potential benefits and limitations of nanosystems used for other lung disorders is also considered to indicate how they may be useful for the potential treatment of ARDS.
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Affiliation(s)
- Clarence T Dhege
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2193, South Africa
| | - Pradeep Kumar
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2193, South Africa
| | - Yahya E Choonara
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, 7 York Road, Parktown 2193, South Africa.
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Ando Y, Munetsuna E, Yamada H, Ikeya M, Teshigawara A, Kageyama I, Nouchi Y, Wakasugi T, Yamazaki M, Mizuno G, Tsuboi Y, Ishikawa H, Ohgami N, Suzuki K, Ohashi K. Impact of maternal fructose intake on liver stem/progenitor cells in offspring: Insights into developmental origins of health and disease. Life Sci 2024; 336:122315. [PMID: 38035994 DOI: 10.1016/j.lfs.2023.122315] [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: 09/06/2023] [Revised: 10/27/2023] [Accepted: 11/27/2023] [Indexed: 12/02/2023]
Abstract
AIMS The developmental origin of health and disease (DOHaD) theory postulates that poor nutrition during fetal life increases the risk of disease later in life. Excessive fructose intake has been associated with obesity, diabetes, and nonalcoholic fatty liver disease, and maternal fructose intake during pregnancy has been shown to affect offspring health. In this study, we investigated the effects of high maternal fructose intake on the liver stem/progenitor cells of offspring. MAIN METHOD A fructose-based DOHaD model was established using Sprague-Dawley rats. Small hepatocytes (SHs), which play an important role in liver development and regeneration, were isolated from the offspring of dams that were fed a high-fructose corn syrup (HFCS) diet. The gene expression and DNA methylation patterns were analyzed on postnatal day (PD) 21 and 60. KEY FINDINGS Maternal HFCS intake did not affect body weight or caloric intake, but differences in gene expression and DNA methylation patterns were observed in the SHs of offspring. Functional analysis revealed an association between metabolic processes and ion transport. SIGNIFICANCE These results suggest that maternal fructose intake affects DNA methylation and gene expression in the liver stem/progenitor cells of offspring. Furthermore, the prolonged retention of these changes in gene expression and DNA methylation in adulthood (PD 60) suggests that maternal fructose intake may exert lifelong effects. These findings provide insights into the DOHaD for liver-related disorders and highlight the importance of maternal nutrition for the health of the next generation.
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Affiliation(s)
- Yoshitaka Ando
- Department of Informative Clinical Medicine, Fujita Health University School of Medical Sciences, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
| | - Eiji Munetsuna
- Department of Animal Science and Biotechnology, School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara-shi, Kanagawa 252-5201, Japan
| | - Hiroya Yamada
- Department of Hygiene, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan.
| | - Miyuki Ikeya
- Department of Informative Clinical Medicine, Fujita Health University School of Medical Sciences, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
| | - Atsushi Teshigawara
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
| | - Itsuki Kageyama
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
| | - Yuki Nouchi
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
| | - Takuya Wakasugi
- Department of Hygiene, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
| | - Mirai Yamazaki
- Department of Medical Technology, Kagawa Prefectural University of Health Sciences, 281-1 Hara, Mure-cho Takamatsu, Kagawa 761-0123, Japan
| | - Genki Mizuno
- Department of Medical Technology, Tokyo University of Technology School of Health Sciences, 5-23-22 Nishi-Kamata, Ota, Tokyo 144-8535, Japan
| | - Yoshiki Tsuboi
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
| | - Hiroaki Ishikawa
- Department of Informative Clinical Medicine, Fujita Health University School of Medical Sciences, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
| | - Nobutaka Ohgami
- Department of Hygiene, Fujita Health University School of Medicine, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
| | - Koji Suzuki
- Department of Preventive Medical Sciences, Fujita Health University School of Medical Sciences, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
| | - Koji Ohashi
- Department of Informative Clinical Medicine, Fujita Health University School of Medical Sciences, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi 470-1192, Japan
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Domingo-Relloso A, Joehanes R, Rodriguez-Hernandez Z, Lahousse L, Haack K, Fallin MD, Herreros-Martinez M, Umans JG, Best LG, Huan T, Liu C, Ma J, Yao C, Jerolon A, Bermudez JD, Cole SA, Rhoades DA, Levy D, Navas-Acien A, Tellez-Plaza M. Smoking, blood DNA methylation sites and lung cancer risk. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 334:122153. [PMID: 37442331 PMCID: PMC10528956 DOI: 10.1016/j.envpol.2023.122153] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 06/07/2023] [Accepted: 07/04/2023] [Indexed: 07/15/2023]
Abstract
Altered DNA methylation (DNAm) might be a biological intermediary in the pathway from smoking to lung cancer. In this study, we investigated the contribution of differential blood DNAm to explain the association between smoking and lung cancer incidence. Blood DNAm was measured in 2321 Strong Heart Study (SHS) participants. Incident lung cancer was assessed as time to event diagnoses. We conducted mediation analysis, including validation with DNAm and paired gene expression data from the Framingham Heart Study (FHS). In the SHS, current versus never smoking and pack-years single-mediator models showed, respectively, 29 and 21 differentially methylated positions (DMPs) for lung cancer with statistically significant mediated effects (14 of 20 available, and five of 14 available, positions, replicated, respectively, in FHS). In FHS, replicated DMPs showed gene expression downregulation largely in trans, and were related to biological pathways in cancer. The multimediator model identified that DMPs annotated to the genes AHRR and IER3 jointly explained a substantial proportion of lung cancer. Thus, the association of smoking with lung cancer was partly explained by differences in baseline blood DNAm at few relevant sites. Experimental studies are needed to confirm the biological role of identified eQTMs and to evaluate potential implications for early detection and control of lung cancer.
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Affiliation(s)
- Arce Domingo-Relloso
- Integrative Epidemiology Group, Department of Chronic Diseases Epidemiology, National Center for Epidemiology, Carlos III Health Institute, Madrid, Spain; Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, NY, USA; Department of Statistics and Operations Research, University of Valencia, Spain.
| | - Roby Joehanes
- Population Sciences Branch, National Heart, Lung, And Blood Institute, National Institutes of Health, Bethesda, MD, USA; Framingham Heart Study, Framingham, MA, USA
| | - Zulema Rodriguez-Hernandez
- Integrative Epidemiology Group, Department of Chronic Diseases Epidemiology, National Center for Epidemiology, Carlos III Health Institute, Madrid, Spain
| | - Lies Lahousse
- Department of Epidemiology, Erasmus MC University Medical Center, Rotterdam, the Netherlands; Department of Bioanalysis, Faculty of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - Karin Haack
- Population Health Program, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - M Daniele Fallin
- Department of Mental Health, Johns Hopkins University, Baltimore, USA; Department of Epidemiology, Johns Hopkins University, Baltimore, USA
| | | | - Jason G Umans
- MedStar Health Research Institute, Washington DC, USA; Georgetown-Howard Universities Center for Clinical and Translational Science, Washington DC, USA
| | - Lyle G Best
- Missouri Breaks Industries and Research Inc., Eagle Butte, SD, USA
| | - Tianxiao Huan
- Framingham Heart Study, Framingham, MA, USA; University of Massachusetts Medical School, Worcester, MA, USA
| | - Chunyu Liu
- Framingham Heart Study, Framingham, MA, USA; Boston University School of Public Health, Boston, MA, USA
| | - Jiantao Ma
- Framingham Heart Study, Framingham, MA, USA; Tufts University Friedman School of Nutrition Science and Policy, Boston, MA, USA
| | - Chen Yao
- Framingham Heart Study, Framingham, MA, USA; Bristol Myers Squibb, Cambridge, MA, USA
| | - Allan Jerolon
- Université Paris Cité, CNRS, MAP5, F-75006, Paris, France
| | - Jose D Bermudez
- Department of Statistics and Operations Research, University of Valencia, Spain
| | - Shelley A Cole
- Population Health Program, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Dorothy A Rhoades
- Stephenson Cancer Center, University of Oklahoma Health Sciences Department of Medicine, Oklahoma City, OK, USA
| | - Daniel Levy
- Population Sciences Branch, National Heart, Lung, And Blood Institute, National Institutes of Health, Bethesda, MD, USA; Framingham Heart Study, Framingham, MA, USA
| | - Ana Navas-Acien
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, NY, USA
| | - Maria Tellez-Plaza
- Integrative Epidemiology Group, Department of Chronic Diseases Epidemiology, National Center for Epidemiology, Carlos III Health Institute, Madrid, Spain
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Opitz CA, Holfelder P, Prentzell MT, Trump S. The complex biology of aryl hydrocarbon receptor activation in cancer and beyond. Biochem Pharmacol 2023; 216:115798. [PMID: 37696456 PMCID: PMC10570930 DOI: 10.1016/j.bcp.2023.115798] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/08/2023] [Accepted: 09/08/2023] [Indexed: 09/13/2023]
Abstract
The aryl hydrocarbon receptor (AHR) signaling pathway is a complex regulatory network that plays a critical role in various biological processes, including cellular metabolism, development, and immune responses. The complexity of AHR signaling arises from multiple factors, including the diverse ligands that activate the receptor, the expression level of AHR itself, and its interaction with the AHR nuclear translocator (ARNT). Additionally, the AHR crosstalks with the AHR repressor (AHRR) or other transcription factors and signaling pathways and it can also mediate non-genomic effects. Finally, posttranslational modifications of the AHR and its interaction partners, epigenetic regulation of AHR and its target genes, as well as AHR-mediated induction of enzymes that degrade AHR-activating ligands may contribute to the context-specificity of AHR activation. Understanding the complexity of AHR signaling is crucial for deciphering its physiological and pathological roles and developing therapeutic strategies targeting this pathway. Ongoing research continues to unravel the intricacies of AHR signaling, shedding light on the regulatory mechanisms controlling its diverse functions.
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Affiliation(s)
- Christiane A Opitz
- German Cancer Research Center (DKFZ), Heidelberg, Division of Metabolic Crosstalk in Cancer and the German Cancer Consortium (DKTK), DKFZ Core Center Heidelberg, 69120 Heidelberg, Germany; Neurology Clinic and National Center for Tumor Diseases, 69120 Heidelberg, Germany.
| | - Pauline Holfelder
- German Cancer Research Center (DKFZ), Heidelberg, Division of Metabolic Crosstalk in Cancer and the German Cancer Consortium (DKTK), DKFZ Core Center Heidelberg, 69120 Heidelberg, Germany; Faculty of Bioscience, Heidelberg University, 69120 Heidelberg, Germany
| | - Mirja Tamara Prentzell
- German Cancer Research Center (DKFZ), Heidelberg, Division of Metabolic Crosstalk in Cancer and the German Cancer Consortium (DKTK), DKFZ Core Center Heidelberg, 69120 Heidelberg, Germany; Faculty of Bioscience, Heidelberg University, 69120 Heidelberg, Germany
| | - Saskia Trump
- Molecular Epidemiology Unit, Berlin Institute of Health at Charité and the German Cancer Consortium (DKTK), Partner Site Berlin, a partnership between DKFZ and Charité -Universitätsmedizin Berlin, 10117 Berlin, Germany
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Liu A, Li X, Zhou L, Yan X, Xia N, Song Z, Cao J, Hao Z, Zhang Z, Liang R, Zhang H. BPDE-DNA adduct formation and alterations of mRNA, protein, and DNA methylation of CYP1A1, GSTP1, and GSTM1 induced by benzo[a]pyrene and the intervention of aspirin in mice. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:106549-106561. [PMID: 37730975 DOI: 10.1007/s11356-023-29878-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Accepted: 09/10/2023] [Indexed: 09/22/2023]
Abstract
Benzo[a]pyrene (B[a]P), one typical environmental pollutant, the toxicity mechanisms, and potential prevention remain perplexing. Available evidence suggests cytochrome P450 1A1 (CYP1A1) and glutathione S-transferases (GSTs) metabolize B[a]P, resulting in metabolic activation and detoxification of B[a]P. This study aimed to reveal the impact of B[a]P exposure on trans-7,8-diol-anti-9,10-epoxide DNA (BPDE-DNA) adduct formation, level of CYP1A1, glutathione S-transferase pi (GSTP1) and glutathione S-transferase mu1 (GSTM1) mRNA, protein and DNA methylation in mice, and the potential prevention of aspirin (ASP). This study firstly determined the BPDE-DNA adduct formation in an acute toxicity test of a large dose in mice induced by B[a]P, which subsequently detected CYP1A1, GSTP1, and GSTM1 at levels of mRNA, protein, and DNA methylation in the organs of mice in a subacute toxicity test at appropriate doses and the potential prevention of ASP, using the methods of real-time quantitative PCR (QPCR), western blotting, and real-time methylation-specific PCR (MSP), respectively. The results verified that B[a]P induced the formation of BPDE-DNA adduct in all the organs of mice in an acute toxicity test, and the order of concentration of which was lung > kidney > liver > brain. In a subacute toxicity test, following B[a]P treatment, mice showed a dose-dependent slowdown in body weight gain and abnormalities in behavioral and cognitive function and which were alleviated by ASP co-treatment. Compared to the controls, following B[a]P treatment, CYP1A1 was significantly induced in all organs in mice at mRNA level (P < 0.05), was suppressed in the lung and cerebrum of mice at protein level, and inhibited at DNA methylation level in the liver, lung, and cerebrum, whereas GSTP1 and GSTM1 at mRNA, protein, and DNA methylation levels showed organ-specific changes in mice following B[a]P treatment, which was generally alleviated by ASP intervention. In conclusion, B[a]P induced BPDE-DNA adduct formation in all organs in mice and altered the mRNA, protein, and DNA methylation levels in CYP1A1, GSTP1, and GSTM1 in an organ-dependent pattern, which could be related to the organ toxicity and mechanism of B[a]P. ASP intervention may be an effective measure to prevent B[a]P toxicity. The findings provide scientific evidence for further study on the organ toxicity and mechanisms of B[a]P.
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Affiliation(s)
- Aixiang Liu
- Department of Environmental Health, School of Public Health, Shanxi Medical University, 56 Xinjian South Road, Taiyuan, 030001, Shanxi, China
- Department of Health Information Management, Shanxi Medical University Fenyang College, Fenyang, 032200, Shanxi, China
| | - Xin Li
- Center of Disease Control and Prevention, Taiyuan Iron and Steel Co Ltd, Taiyuan, 030003, Shanxi, China
| | - Lisha Zhou
- Department of Environmental Health, School of Public Health, Shanxi Medical University, 56 Xinjian South Road, Taiyuan, 030001, Shanxi, China
| | - Xiaoqing Yan
- Department of Environmental Health, School of Public Health, Shanxi Medical University, 56 Xinjian South Road, Taiyuan, 030001, Shanxi, China
| | - Na Xia
- Department of Environmental Health, School of Public Health, Shanxi Medical University, 56 Xinjian South Road, Taiyuan, 030001, Shanxi, China
- Key Laboratory of Coal Environmental Pathogenicity and Prevention, Ministry of Education, Taiyuan, 030001, Shanxi, China
| | - Zhanfei Song
- Department of Environmental Health, School of Public Health, Shanxi Medical University, 56 Xinjian South Road, Taiyuan, 030001, Shanxi, China
| | - Jingjing Cao
- Department of Environmental Health, School of Public Health, Shanxi Medical University, 56 Xinjian South Road, Taiyuan, 030001, Shanxi, China
| | - Zhongsuo Hao
- Department of Environmental Health, School of Public Health, Shanxi Medical University, 56 Xinjian South Road, Taiyuan, 030001, Shanxi, China
| | - Zhihong Zhang
- Department of Environmental Health, School of Public Health, Shanxi Medical University, 56 Xinjian South Road, Taiyuan, 030001, Shanxi, China
| | - Ruifeng Liang
- Department of Environmental Health, School of Public Health, Shanxi Medical University, 56 Xinjian South Road, Taiyuan, 030001, Shanxi, China
| | - Hongmei Zhang
- Department of Environmental Health, School of Public Health, Shanxi Medical University, 56 Xinjian South Road, Taiyuan, 030001, Shanxi, China.
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7
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Krum-Hansen S, Standahl Olsen K, Anderssen E, Frantzen JO, Lund E, Paulssen RH. Associations of breast cancer related exposures and gene expression profiles in normal breast tissue-The Norwegian Women and Cancer normal breast tissue study. Cancer Rep (Hoboken) 2023; 6:e1777. [PMID: 36617746 PMCID: PMC10075301 DOI: 10.1002/cnr2.1777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 11/11/2022] [Accepted: 12/12/2022] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Normal breast tissue is utilized in tissue-based studies of breast carcinogenesis. While gene expression in breast tumor tissue is well explored, our knowledge of transcriptomic signatures in normal breast tissue is still incomplete. The aim of this study was to investigate variability of gene expression in a large sample of normal breast tissue biopsies, according to breast cancer related exposures (obesity, smoking, alcohol, hormone therapy, and parity). METHODS We analyzed gene expression profiles from 311 normal breast tissue biopsies from cancer-free, post-menopausal women, using Illumina bead chip arrays. Principal component analysis and K-means clustering was used for initial analysis of the dataset. The association of exposures and covariates with gene expression was determined using linear models for microarrays. RESULTS Heterogeneity of the breast tissue and cell composition had the strongest influence on gene expression profiles. After adjusting for cell composition, obesity, smoking, and alcohol showed the highest numbers of associated genes and pathways, whereas hormone therapy and parity were associated with negligible gene expression differences. CONCLUSION Our results provide insight into associations between major exposures and gene expression profiles and provide an informative baseline for improved understanding of exposure-related molecular events in normal breast tissue of cancer-free, post-menopausal women.
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Affiliation(s)
- Sanda Krum-Hansen
- Department of Community Medicine, UiT The Arctic University of Norway, Tromsø, Norway.,Department of Hematology and Oncology, Stavanger University Hospital, Stavanger, Norway
| | - Karina Standahl Olsen
- Department of Community Medicine, UiT The Arctic University of Norway, Tromsø, Norway
| | - Endre Anderssen
- Genomics Support Center Tromsø (GSCT), UiT The Arctic University of Norway, Tromsø, Norway
| | - Jan Ole Frantzen
- Narvik Hospital, University Hospital of North Norway, Narvik, Norway
| | - Eiliv Lund
- Department of Community Medicine, UiT The Arctic University of Norway, Tromsø, Norway
| | - Ruth H Paulssen
- Genomics Support Center Tromsø (GSCT), UiT The Arctic University of Norway, Tromsø, Norway.,Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
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8
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Wu M, Jiang M, Ding H, Tang S, Li D, Pi J, Zhang R, Chen W, Chen R, Zheng Y, Piao J. Nrf2 -/- regulated lung DNA demethylation and CYP2E1 DNA methylation under PM 2.5 exposure. Front Genet 2023; 14:1144903. [PMID: 37113990 PMCID: PMC10128193 DOI: 10.3389/fgene.2023.1144903] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 03/08/2023] [Indexed: 04/29/2023] Open
Abstract
Cytochrome P450 (CYP450) can mediate fine particulate matter (PM2.5) exposure leading to lung injury. Nuclear factor E2-related factor 2 (Nrf2) can regulate CYP450 expression; however, the mechanism by which Nrf2-/- (KO) regulates CYP450 expression via methylation of its promoter after PM2.5 exposure remains unclear. Here, Nrf2-/- (KO) mice and wild-type (WT) were placed in a PM2.5 exposure chamber (PM) or a filtered air chamber (FA) for 12 weeks using the real-ambient exposure system. The CYP2E1 expression trends were opposite between the WT and KO mice following PM2.5 exposure. After exposure to PM2.5, CYP2E1 mRNA and protein levels were increased in WT mice but decreased in KO mice, and CYP1A1 expression was increased after exposure to PM2.5 in both WT and KO mice. CYP2S1 expression decreased after exposure to PM2.5 in both the WT and KO groups. We studied the effect of PM2.5 exposure on CYP450 promoter methylation and global methylation levels in WT and KO mice. In WT and KO mice in the PM2.5 exposure chamber, among the methylation sites examined in the CYP2E1 promoter, the CpG2 methylation level showed an opposite trend with CYP2E1 mRNA expression. The same relationship was evident between CpG3 unit methylation in the CYP1A1 promoter and CYP1A1 mRNA expression, and between CpG1 unit methylation in the CYP2S1 promoter and CYP2S1 mRNA expression. This data suggests that methylation of these CpG units regulates the expression of the corresponding gene. After exposure to PM2.5, the expression of the DNA methylation markers ten-eleven translocation 3 (TET3) and 5-hydroxymethylcytosine (5hmC) was decreased in the WT group but significantly increased in the KO group. In summary, the changes in CYP2E1, CYP1A1, and CYP2S1 expression in the PM2.5 exposure chamber of WT and Nrf2-/- mice might be related to the specific methylation patterns in their promoter CpG units. After exposure to PM2.5, Nrf2 might regulate CYP2E1 expression by affecting CpG2 unit methylation and induce DNA demethylation via TET3 expression. Our study revealed the underlying mechanism for Nrf2 to regulate epigenetics after lung exposure to PM2.5.
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Affiliation(s)
- Mengjie Wu
- School of Public Health, Qingdao University, Qingdao, China
| | - Menghui Jiang
- School of Public Health, Qingdao University, Qingdao, China
| | - Hao Ding
- The Municipal Government Hospital of Zibo, Zibo, Shandong, China
| | - Siying Tang
- Qingdao Chengyang District Center for Disease Control and Prevention, Qingdao, China
| | - Daochuan Li
- Department of Toxicology, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Jingbo Pi
- School of Public Health, China Medical University, Shenyang, China
| | - Rong Zhang
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Wen Chen
- Department of Toxicology, School of Public Health, Sun Yat-Sen University, Guangzhou, China
| | - Rui Chen
- School of Public Health, Capital Medical University, Beijing, China
| | - Yuxin Zheng
- School of Public Health, Qingdao University, Qingdao, China
| | - Jinmei Piao
- School of Public Health, Qingdao University, Qingdao, China
- *Correspondence: Jinmei Piao,
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9
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Dehdari H, Moradian F, Barzegar A, Ebrahimzadeh MA. CYP1A1 contiguous hypermethylation within a putative CpG block is associated with breast cancer progression: Feasibility to define boundary motives. Exp Cell Res 2022; 413:113062. [PMID: 35167827 DOI: 10.1016/j.yexcr.2022.113062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 02/03/2022] [Accepted: 02/11/2022] [Indexed: 11/04/2022]
Abstract
Having broad specificity for xenobiotics metabolism throughout the body, cytochrome P450 (CYP) isoform 1A1 is of key relevance for carcinogenesis. However, the oncogenic potential of its altered transcription and the underlying mechanism has not been well-established in breast cancer. Direct bisulfite sequencing PCR (BSP) of the CYP1A1 promoter, enriched by 113 CpGs within and flanking the xenobiotic response elements (XREs) 2 to 10, in paired cancerous and normal tissues from 40 breast cancer patients revealed three distinctly methylated patterns; unmethylated (XREs 2 to 6) and completely methylated (XREs 7 and 8) CpGs, in common for the normal and cancerous tissues, and a putative 171bp CpG block (XREs 9 and 10) contiguously hypermethylated in the tumor tissues. Increased transcription of CYP1A1, observed for the cancerous tissues, was correlated with the hypermethylation of given CpG block, besides simultaneously being associated with upregulation of the anti-apoptotic BCL-2. Clinical value of the methylation changes, investigated based on the comparisons between the tissue cohorts of different clinicopathological features, exhibited gradual hypermethylation of the corresponding CpG block following disease progression as well as lymphatic involvement. Hypermethylation of given CpG block may has potential to be used as a biomarker for diagnosis and progression of breast cancer.
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Affiliation(s)
- Hossein Dehdari
- Department of Basic Sciences, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
| | - Fatemeh Moradian
- Department of Basic Sciences, Sari Agricultural Sciences and Natural Resources University, Sari, Iran
| | - Ali Barzegar
- Department of Basic Sciences, Sari Agricultural Sciences and Natural Resources University, Sari, Iran.
| | - Mohammad Ali Ebrahimzadeh
- Department of Medicinal Chemistry, School of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
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10
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Habano W, Miura T, Terashima J, Ozawa S. Aryl hydrocarbon receptor as a DNA methylation reader in the stress response pathway. Toxicology 2022; 470:153154. [PMID: 35301058 DOI: 10.1016/j.tox.2022.153154] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 01/31/2022] [Accepted: 03/10/2022] [Indexed: 10/18/2022]
Abstract
The aryl hydrocarbon receptor (AhR) mediates various cellular responses upon exposure to exogenous and endogenous stress factors. In these responses, AhR plays a dual role as a stress sensor for detecting various AhR ligands and as a transcription factor that upregulates the expression of downstream effector genes, such as those encoding drug-metabolizing enzymes. As a transcription factor, it selectively binds to the unmethylated form of a specific sequence called the xenobiotic responsive element (XRE). We suggest that AhR is a novel DNA methylation reader, unlike classical methylation readers, such as methyl-CpG-binding protein 2, which binds to methylated sequences. Under physiological conditions of continuous exposure to endogenous AhR ligands, such as kynurenine, methylation states of the individual target XREs must be strictly regulated to select and coordinate the expression of downstream genes responsible for maintaining homeostasis in the body. In contrast, long-term exposure to AhR ligands frequently leads to changes in the methylation patterns around the XRE sequence. These data indicate that AhR may contribute to the adaptive cellular response to various stresses by modulating DNA methylation. Thus, the DNA methylation profile of AhR target genes should be dynamically controlled through a balance between robustness and flexibility under both physiological and stress conditions. AhR is a pivotal player in the regulation of stress response as it shows versatility by functioning as a stress sensor, methylation reader, and putative methylation modulator.
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Affiliation(s)
- Wataru Habano
- Division of Pharmacodynamics and Molecular Genetics, Department of Clinical Pharmaceutical Sciences, School of Pharmacy, Iwate Medical University, Shiwa 028-3694, Iwate, Japan.
| | - Toshitaka Miura
- Division of Pharmacodynamics and Molecular Genetics, Department of Clinical Pharmaceutical Sciences, School of Pharmacy, Iwate Medical University, Shiwa 028-3694, Iwate, Japan
| | - Jun Terashima
- Division of Pharmacodynamics and Molecular Genetics, Department of Clinical Pharmaceutical Sciences, School of Pharmacy, Iwate Medical University, Shiwa 028-3694, Iwate, Japan
| | - Shogo Ozawa
- Division of Pharmacodynamics and Molecular Genetics, Department of Clinical Pharmaceutical Sciences, School of Pharmacy, Iwate Medical University, Shiwa 028-3694, Iwate, Japan
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11
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Liu A, Li X, Hao Z, Cao J, Li H, Sun M, Zhang Z, Liang R, Zhang H. Alterations of DNA methylation and mRNA levels of CYP1A1, GSTP1, and GSTM1 in human bronchial epithelial cells induced by benzo[a]pyrene. Toxicol Ind Health 2022; 38:127-138. [PMID: 35193440 DOI: 10.1177/07482337211069233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Benzo[a]pyrene (B[a]P) is a known human carcinogen and plays a major function in the initiation of lung cancer at its first proximity. However, the underlying molecular mechanisms are less well understood. In this study, we investigated the impact of B[a]P treatment on the DNA methylation and mRNA levels of CYP1A1, GSTP1, and GSTM1 in human bronchial epithelial cells (16HBEs), and provide scientific evidence for the mechanism study on the carcinogenesis of B[a]P. We treated 16HBEs with DMSO or concentrations of B[a]P at 1, 2, and 5 mmol/L for 24 h, observed the morphological changes, determined the cell viability, DNA methylation, and mRNA levels of CYP1A1, GSTP1, and GSTM1. Compared to the DMSO controls, B[a]P treatment had significantly increased the neoplastic cell number and cell viability in 16HBEs at all three doses (1, 2, and 5 mmol/L), and had significantly reduced the CYP1A1 and GSTP1 DNA promoter methylation levels. Following B[a]P treatment, the GSTM1 promoter methylation level in 16HBEs was profoundly reduced at low dose group compared to the DMSO controls, yet it was significantly increased at both middle and high dose groups. The mRNA levels of CYP1A1, GSTP1, and GSTM1 were significantly decreased in 16HBEs following B[a]P treatment at all three doses. The findings demonstrate that B[a]P promoted cell proliferation in 16HBEs, which was possibly related to the altered DNA methylations and the inhibited mRNA levels in CYP1A1, GSTP1, and GSTM1.
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Affiliation(s)
- Aixiang Liu
- Department of Environmental Health, School of Public Health, 74648Shanxi Medical University, Taiyuan, Shanxi, China.,Department of Health Information Management, 74648Shanxi Medical University Fenyang College, Fenyang, Shanxi, China
| | - Xin Li
- Center of Disease Control and Prevention, 442190Taiyuan Iron and Steel Co Ltd, Taiyuan, Shanxi, China
| | - Zhongsuo Hao
- Department of Environmental Health, School of Public Health, 74648Shanxi Medical University, Taiyuan, Shanxi, China
| | - Jingjing Cao
- Department of Environmental Health, School of Public Health, 74648Shanxi Medical University, Taiyuan, Shanxi, China
| | - Huan Li
- Department of Environmental Health, School of Public Health, 74648Shanxi Medical University, Taiyuan, Shanxi, China
| | - Min Sun
- Department of Environmental Health, School of Public Health, 74648Shanxi Medical University, Taiyuan, Shanxi, China
| | - Zhihong Zhang
- Department of Environmental Health, School of Public Health, 74648Shanxi Medical University, Taiyuan, Shanxi, China
| | - Ruifeng Liang
- Department of Environmental Health, School of Public Health, 74648Shanxi Medical University, Taiyuan, Shanxi, China
| | - Hongmei Zhang
- Department of Environmental Health, School of Public Health, 74648Shanxi Medical University, Taiyuan, Shanxi, China
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12
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Ung TT, Nguyen TT, Li S, Han JY, Jung YD. Nicotine stimulates CYP1A1 expression in human hepatocellular carcinoma cells via AP-1, NF-κB, and AhR. Toxicol Lett 2021; 349:155-164. [PMID: 34171359 DOI: 10.1016/j.toxlet.2021.06.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 06/15/2021] [Accepted: 06/16/2021] [Indexed: 12/28/2022]
Abstract
Cytochrome P450 1A1 (CYP1A1) is a member of a subfamily of enzymes involved in the metabolism of both endogenous and exogenous substrates and the chemical activation of xenobiotics to carcinogenic derivatives. Here, the effects of nicotine, a major psychoactive compound present in cigarette smoke, on CYP1A1 expression and human hepatocellular carcinoma (HepG2) cell proliferation were investigated. Nicotine stimulated CYP1A1 expression via the transcription factors, activator protein 1, nuclear factor-kappa B, and the aryl hydrocarbon receptor (AhR) signaling pathway. Pharmacological inhibition and mutagenesis studies indicated that p38 mitogen-activated protein kinase, as well as RelA (or p65), mediated the upregulation of CYP1A1 of nicotine in HepG2 cells. The antioxidant compound, N-acetyl-cysteine, abrogated nicotine-activated production of reactive oxygen species and inhibited CYP1A1 expression by nicotine. Furthermore, nicotinamide adenine dinucleotide phosphate (NADPH) oxidase activity was inhibited by diphenyleneiodonium (an NADPH oxidase inhibitor). Thus, these results demonstrated that AhR played an important role in nicotine-induced CYP1A1 expression. Additionally, liver hepatocellular carcinoma HepG2 cells treated with nicotine exhibited markedly enhanced proliferation via CYP1A1 expression and Akt activation.
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Affiliation(s)
- Trong Thuan Ung
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 61469, Republic of Korea; Nanogen Biopharmaceutical Company, Lot I - 5C Saigon Hitech Park, Tang Nhon Phu A Ward, District 9, Ho Chi Minh City, Viet Nam
| | - Thi Thinh Nguyen
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 61469, Republic of Korea; Nanogen Biopharmaceutical Company, Lot I - 5C Saigon Hitech Park, Tang Nhon Phu A Ward, District 9, Ho Chi Minh City, Viet Nam
| | - Shinan Li
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 61469, Republic of Korea
| | - Jae-Young Han
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 61469, Republic of Korea; Department of Physical and Rehabilitation Medicine, Chonnam National University Medical School and Hospital, Gwangju, 61469, Republic of Korea
| | - Young Do Jung
- Research Institute of Medical Sciences, Chonnam National University Medical School, Gwangju 61469, Republic of Korea.
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13
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Reddy KD, Lan A, Boudewijn IM, Rathnayake SNH, Koppelman GH, Oliver BG, van den Berge M, Faiz A. Current-Smoking alters Gene Expression and DNA Methylation in the Nasal Epithelium of Asthmatics. Am J Respir Cell Mol Biol 2021; 65:366-377. [PMID: 33989148 DOI: 10.1165/rcmb.2020-0553oc] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Current-smoking contributes to worsened asthma prognosis, more severe symptoms and limits the beneficial effects of corticosteroids. As the nasal epithelium can reflect smoking-induced changes in the lower airways, it is a relevant source to investigate changes in gene expression and DNA methylation. This study explores gene expression and DNA methylation changes in current and ex-smokers with asthma. Matched gene expression and epigenome-wide DNA methylation samples collected from nasal brushings of 55 patients enrolled in a clinical trial investigation of current and ex-smoker asthma patients were analysed. Differential gene expression and DNA methylation analyses were conducted comparing current- vs ex-smokers. Expression quantitative trait methylation (eQTM) analysis was completed to explore smoking relevant genes by CpG sites that differ between current and ex-smokers. To investigate the relevance of the smoking-associated DNA methylation changes for the lower airways, significant CpG sites were explored in bronchial biopsies from patients who had stopped smoking. 809 genes and 18,814 CpG sites were differentially associated with current-smoking in the nose. The cis-eQTM analysis uncovered 171 CpG sites whose methylation status associated with smoking-related gene expression, including AHRR, ALDH3A1, CYP1A1 and CYP1B1. Methylation status of CpG sites altered by current-smoking reversed with one-year smoking cessation. We confirm current-smoking alters epigenetic patterns and affects gene expression in the nasal epithelium of asthma patients, which is partially reversible in bronhcial biopsies after smoking cessation. We demonstrate the ability to discern molecular changes in the nasal epithelium, presenting this as a tool in future investigations into disease-relevant effects of tobacco smoke.
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Affiliation(s)
- Karosham D Reddy
- Woolcock Institute of Medical Research, 104349, Cell Biology, Glebe, New South Wales, Australia.,University of Technology Sydney, 1994, School of Life Sciences, Ultimo, New South Wales, Australia;
| | - Andy Lan
- University of Groningen, 3647, Department of Pulmonary Diseases, Groningen, Netherlands.,University of Groningen, 3647, GRIAC Research Institute, Groningen, Netherlands
| | - Ilse M Boudewijn
- University of Groningen, 3647, Department of Pulmonary Diseases, Groningen, Netherlands.,University of Groningen, 3647, GRIAC Research Insitute, Groningen, Netherlands
| | - Senani N H Rathnayake
- University of Technology Sydney, 1994, Respiratory Bioinformatics and Molecular Biology (RBMB) group,, Sydney, New South Wales, Australia
| | - Gerard H Koppelman
- University of Groningen, 3647, University Medical Center Groningen, Department of Pulmonology and Pediatric Allergy, Beatrix Children's Hospital, Groningen, Netherlands.,University of Groningen, 3647, University Medical Center Groningen, GRIAC research institute, Groningen, Netherlands
| | - Brian G Oliver
- Woolcock Institute of Medical Research, 104349, Glebe, New South Wales, Australia.,University of Technology Sydney, 1994, School of Medical and Molecular Biosciences, Sydney, New South Wales, Australia
| | - Maarten van den Berge
- University of Groningen, 3647, University Medical Center, Department of Pulmonary Diseases, Groningen, Netherlands.,University Medical Center Göttingen, 84922, Groningen Research Institute for Asthma and COPD (GRIAC), Gottingen, Germany
| | - Alen Faiz
- University of Technology Sydney, 1994, Respiratory Bioinformatics and Molecular Biology (RBMB), School of Life Sciences, Sydney, New South Wales, Australia
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14
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Enlo-Scott Z, Bäckström E, Mudway I, Forbes B. Drug metabolism in the lungs: opportunities for optimising inhaled medicines. Expert Opin Drug Metab Toxicol 2021; 17:611-625. [DOI: 10.1080/17425255.2021.1908262] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Zachary Enlo-Scott
- Institute of Pharmaceutical Science, Faculty of Life Sciences and Medicine, King’s College London, London, UK
| | - Erica Bäckström
- Drug Metabolism and Pharmacokinetics, Research and Early Development, Respiratory and Immunology (R&I), BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Ian Mudway
- MRC Centre for Environment and Health, School of Population Health & Environmental Sciences, Imperial College London, London, United Kingdom; National Institute for Health Research, Health Protection Research Units in Chemical and Radiation Threats and Hazards and Environmental Exposures and Health, Imperial College London, London, UK
| | - Ben Forbes
- Institute of Pharmaceutical Science, Faculty of Life Sciences and Medicine, King’s College London, London, UK
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15
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Hypomethylation of the XRE -1383 site is associated with the upregulation of CYP1A1 in gastric adenocarcinoma. Gene 2020; 769:145216. [PMID: 33069801 DOI: 10.1016/j.gene.2020.145216] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 09/12/2020] [Accepted: 10/02/2020] [Indexed: 01/08/2023]
Abstract
Owing to its broad substrate specificity of mainly xenobiotics and its preferential extrahepatic expression, cytochrome P450 1A1 (CYP1A1) is a principle member of the CYP detoxifying enzyme superfamily involving in carcinogenesis. Methylation status of 93 CpG sites, densely scattered within approximately 1.5 kb 5' regulatory region of CYP1A1, and its association with gene transcription was analyzed in tissue cohorts dissected from 40 patients with gastric cancer. Bisulfite sequencing and the resulting methylation percentages revealed dynamically methylated CpG sites located within or around xenobiotic response elements (XRE) 4-10, and a region of consistent hypermethylation located near proximal promoter, encompassing XRE2-3. Statistical analysis revealed significant differences of the methylation percentages at the CpG sites -1415 (0.032) and -1524 (P = 0.041) (located at the close upstream region of XRE10) between cancerous and normal gastric tissues as well as between those with and without lymphatic involvement. Quantitative real time PCR analysis showed that the CYP1A1 gene expression significantly increases in cancerous tissues compared to their normal tissue cohort, and is significantly associated with hypomethylation at the CpG site -1383 (P = 0.018) within the XRE10 motif. These data suggest that the variably methylated CpG site from the 5' regulatory region of CYP1A1, corresponding with the XRE10 regulatory region, is associated with its gene upregulation thus, is likely involved in gastric cancer incidence and metastasis. Methylation analysis of the CpG sites located within or around the XRE10 motif of the CYP1A1 promoter can be used as a potential marker to evaluate individual susceptibility to gastric cancer.
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16
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Akhtar S, Hourani S, Therachiyil L, Al-Dhfyan A, Agouni A, Zeidan A, Uddin S, Korashy HM. Epigenetic Regulation of Cancer Stem Cells by the Aryl Hydrocarbon Receptor Pathway. Semin Cancer Biol 2020; 83:177-196. [PMID: 32877761 DOI: 10.1016/j.semcancer.2020.08.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/20/2020] [Accepted: 08/23/2020] [Indexed: 12/14/2022]
Abstract
Compelling evidence has demonstrated that tumor bulk comprises distinctive subset of cells generally referred as cancer stem cells (CSCs) that have been proposed as a strong sustainer and promoter of tumorigenesis and therapeutic resistance. These distinguished properties of CSCs have raised interest in understanding the molecular mechanisms that govern the maintenance of these cells. Numerous experimental and epidemiological studies have demonstrated that exposure to environmental toxins such as the polycyclic aromatic hydrocarbons (PAHs) is strongly involved in cancer initiation and progression. The PAH-induced carcinogenesis is shown to be mediated through the activation of a cytosolic receptor, aryl hydrocarbon receptor (AhR)/Cytochrome P4501A pathway, suggesting a possible direct link between AhR and CSCs. Several recent studies have investigated the role of AhR in CSCs self-renewal and maintenance, however the molecular mechanisms and particularly the epigenetic regulations of CSCs by the AhR/CYP1A pathway have not been reviewed before. In this review, we first summarize the crosstalk between AhR and cancer genetics, with a particular emphasis on the mechanisms relevant to CSCs such as Wnt/β-catenin, Notch, NF-κB, and PTEN-PI3K/Akt signaling pathways. The second part of this review discusses the recent advances and studies highlighting the epigenetic mechanisms mediated by the AhR/CYP1A pathway that control CSC gene expression, self-renewal, and chemoresistance in various human cancers. Furthermore, the review also sheds light on the importance of targeting the epigenetic pathways as a novel therapeutic approach against CSCs.
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Affiliation(s)
- Sabah Akhtar
- Department of Pharmaceutical Sciences, College of Pharmacy, QU Health, Qatar University, Doha, Qatar
| | - Shireen Hourani
- Department of Pharmaceutical Sciences, College of Pharmacy, QU Health, Qatar University, Doha, Qatar
| | - Lubna Therachiyil
- Department of Pharmaceutical Sciences, College of Pharmacy, QU Health, Qatar University, Doha, Qatar; Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Abdullah Al-Dhfyan
- Stem Cell & Tissue Re-Engineering, King Faisal Specialist Hospital and Research Centre, Riyadh, 11211, Saudi Arabia
| | - Abdelali Agouni
- Department of Pharmaceutical Sciences, College of Pharmacy, QU Health, Qatar University, Doha, Qatar
| | - Asad Zeidan
- Department of Biomedical Sciences, College of Medicine, QU Health, Qatar University, Doha, Qatar
| | - Shahab Uddin
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Hesham M Korashy
- Department of Pharmaceutical Sciences, College of Pharmacy, QU Health, Qatar University, Doha, Qatar.
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17
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Reuben A, Sugden K, Arseneault L, Corcoran DL, Danese A, Fisher HL, Moffitt TE, Newbury JB, Odgers C, Prinz J, Rasmussen LJH, Williams B, Mill J, Caspi A. Association of Neighborhood Disadvantage in Childhood With DNA Methylation in Young Adulthood. JAMA Netw Open 2020; 3:e206095. [PMID: 32478847 PMCID: PMC7265095 DOI: 10.1001/jamanetworkopen.2020.6095] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
IMPORTANCE DNA methylation has been proposed as an epigenetic mechanism by which the childhood neighborhood environment may have implications for the genome that compromise adult health. OBJECTIVE To ascertain whether childhood neighborhood socioeconomic disadvantage is associated with differences in DNA methylation by age 18 years. DESIGN, SETTING, AND PARTICIPANTS This longitudinal cohort study analyzed data from the Environmental Risk (E-Risk) Longitudinal Twin Study, a nationally representative birth cohort of children born between 1994 and 1995 in England and Wales and followed up from age 5 to 18 years. Data analysis was performed from March 15, 2019, to June 30, 2019. EXPOSURES High-resolution neighborhood data (indexing deprivation, dilapidation, disconnection, and dangerousness) collected across childhood. MAIN OUTCOMES AND MEASURES DNA methylation in whole blood was drawn at age 18 years. Associations between neighborhood socioeconomic disadvantage and methylation were tested using 3 prespecified approaches: (1) testing probes annotated to candidate genes involved in biological responses to growing up in socioeconomically disadvantaged neighborhoods and investigated in previous epigenetic research (stress reactivity-related and inflammation-related genes), (2) polyepigenetic scores indexing differential methylation in phenotypes associated with growing up in disadvantaged neighborhoods (obesity, inflammation, and smoking), and (3) a theory-free epigenome-wide association study. RESULTS A total of 1619 participants (806 female individuals [50%]) had complete neighborhood and DNA methylation data. Children raised in socioeconomically disadvantaged neighborhoods exhibited differential DNA methylation in genes involved in inflammation (β = 0.12; 95% CI, 0.06-0.19; P < .001) and smoking (β = 0.18; 95% CI, 0.11-0.25; P < .001) but not obesity (β = 0.05; 95% CI, -0.01 to 0.11; P = .12). An epigenome-wide association study identified multiple CpG sites at an arraywide significance level of P < 1.16 × 10-7 in genes involved in the metabolism of hydrocarbons. Associations between neighborhood disadvantage and methylation were small but robust to family-level socioeconomic factors and to individual-level tobacco smoking. CONCLUSIONS AND RELEVANCE Children raised in more socioeconomically disadvantaged neighborhoods appeared to enter young adulthood epigenetically distinct from their less disadvantaged peers. This finding suggests that epigenetic regulation may be a mechanism by which the childhood neighborhood environment alters adult health.
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Affiliation(s)
- Aaron Reuben
- Department of Psychology and Neuroscience, Duke University, Durham, North Carolina
| | - Karen Sugden
- Department of Psychology and Neuroscience, Duke University, Durham, North Carolina
| | - Louise Arseneault
- Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, United Kingdom
| | - David L. Corcoran
- Center for Genomic and Computational Biology, Duke University, Durham, North Carolina
| | - Andrea Danese
- Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, United Kingdom
- Institute of Psychiatry, Psychology & Neuroscience, Department of Child & Adolescent Psychiatry, King’s College London, London, United Kingdom
- National and Specialist Child and Adolescent Mental Health Service Clinic for Trauma, Anxiety, and Depression, South London and Maudsley National Health Service Foundation Trust, London, United Kingdom
| | - Helen L. Fisher
- Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, United Kingdom
| | - Terrie E. Moffitt
- Department of Psychology and Neuroscience, Duke University, Durham, North Carolina
- Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, United Kingdom
- Center for Genomic and Computational Biology, Duke University, Durham, North Carolina
- Department of Psychiatry and Behavioral Sciences, Duke University, Durham, North Carolina
| | - Joanne B. Newbury
- Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, United Kingdom
| | - Candice Odgers
- Sanford School of Public Policy, Duke University, Durham, North Carolina
- Department of Psychological Science, University of California, Irvine, Irvine
| | - Joey Prinz
- Center for Genomic and Computational Biology, Duke University, Durham, North Carolina
| | - Line J. H. Rasmussen
- Department of Psychology and Neuroscience, Duke University, Durham, North Carolina
- Clinical Research Centre, Copenhagen University Hospital Amager and Hvidovre, Hvidovre, Denmark
| | - Ben Williams
- Department of Psychology and Neuroscience, Duke University, Durham, North Carolina
| | - Jonathan Mill
- University of Exeter Medical School, University of Exeter, Exeter, United Kingdom
| | - Avshalom Caspi
- Department of Psychology and Neuroscience, Duke University, Durham, North Carolina
- Social, Genetic, and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, United Kingdom
- Center for Genomic and Computational Biology, Duke University, Durham, North Carolina
- Department of Psychiatry and Behavioral Sciences, Duke University, Durham, North Carolina
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18
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Wu HC, Cohn BA, Cirillo PM, Santella RM, Terry MB. DDT exposure during pregnancy and DNA methylation alterations in female offspring in the Child Health and Development Study. Reprod Toxicol 2020; 92:138-147. [PMID: 30822522 PMCID: PMC6710160 DOI: 10.1016/j.reprotox.2019.02.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 02/07/2019] [Accepted: 02/25/2019] [Indexed: 12/14/2022]
Abstract
Studies measuring dichlorodiphenyltrichloroethane (DDT) exposure during key windows of susceptibility including the intrauterine period suggest that DDT exposure is associated with breast cancer risk. We hypothesized that prenatal DDT exposure is associated with DNA methylation. Using prospective data from 316 daughters in the Child Health and Development Study, we examined the association between prenatal exposure to DDTs and DNA methylation in blood collected in midlife (mean age: 49 years). To identify differentially methylated regions (DMRs) associated with markers of DDTs (p,p'-DDT and the primary metabolite of p,p'-DDT, p,p'-DDE, and o,p'-DDT, the primary constituents of technical DDT), we measured methylation in 30 genes important to breast cancer. We observed DDT DMRs in three genes, CCDC85A, CYP1A1 and ZFPM2, each of which has been previously implicated in pubertal development and breast cancer susceptibility. These findings suggest prenatal DDT exposure may have life-long consequence through alteration in genes relevant to breast cancer.
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Affiliation(s)
- Hui-Chen Wu
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY
- Department of Environmental Health Sciences, Mailman School of Public Health of Columbia University, New York, NY
| | - Barbara A. Cohn
- Child Health and Development Studies, Public Health Institute, Berkeley, California
| | - Piera M. Cirillo
- Child Health and Development Studies, Public Health Institute, Berkeley, California
| | - Regina M. Santella
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY
- Department of Environmental Health Sciences, Mailman School of Public Health of Columbia University, New York, NY
| | - Mary Beth Terry
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY
- Department of Environmental Health Sciences, Mailman School of Public Health of Columbia University, New York, NY
- Imprints Center, Columbia University Medical Center, New York, NY
- Department of Epidemiology, Mailman School of Public Health of Columbia University, New York, NY
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19
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Ye W, Chen R, Chen X, Huang B, Lin R, Xie X, Chen J, Jiang J, Deng Y, Wen J. AhR regulates the expression of human cytochrome P450 1A1 (CYP1A1) by recruiting Sp1. FEBS J 2019; 286:4215-4231. [PMID: 31199573 DOI: 10.1111/febs.14956] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 04/09/2019] [Accepted: 06/11/2019] [Indexed: 12/28/2022]
Abstract
Cytochrome P450 1A1 (CYP1A1) is abundant in the kidney, liver, and intestine and is involved in the phase I metabolism of numerous endogenous and exogenous compounds. Therefore, exploring the regulatory mechanism of its basal expression in humans is particularly important to understand the bioactivation of several procarcinogens to their carcinogenic derivatives. Site-specific mutagenesis and deletion of the transcription factor binding site determined the core cis-acting elements in the human CYP1A1 proximal and distal promoter regions. The proximal promoter region [overlapping xenobiotic-responsive element (XRE) and GC box sequences] determined the basal expression of CYP1A1. In human hepatocellular carcinoma cells (HepG2) with aryl hydrocarbon receptor (AhR) or specificity protein 1 (Sp1) knockdown, we confirmed that AhR and Sp1 are involved in basal CYP1A1 expression. In HepG2 cells overexpressing either AhR or Sp1, AhR determined the proximal transactivation of basal CYP1A1 expression. Via DNA affinity precipitation assays and ChIP, we found that AhR bound to the promoter and recruited Sp1 to transactivate CYP1A1 expression. The coordinated interaction between Sp1 and AhR was identified to be DNA mediated. Our work revealed a basal regulatory mechanism of an interesting human gene by which AhR interacts with Sp1 through DNA and recruits Sp1 to regulate basal CYP1A1 expression.
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Affiliation(s)
- Wenchu Ye
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University Guangzhou, Guangzhou, Guangdong, 510642, China
- Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Ruohong Chen
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University Guangzhou, Guangzhou, Guangdong, 510642, China
- Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Xiaoxuan Chen
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University Guangzhou, Guangzhou, Guangdong, 510642, China
- Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Boyan Huang
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University Guangzhou, Guangzhou, Guangdong, 510642, China
- Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Ruqin Lin
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University Guangzhou, Guangzhou, Guangdong, 510642, China
- Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Xuan Xie
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University Guangzhou, Guangzhou, Guangdong, 510642, China
- Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Jiongjie Chen
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University Guangzhou, Guangzhou, Guangdong, 510642, China
- Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Jun Jiang
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University Guangzhou, Guangzhou, Guangdong, 510642, China
- Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Yiqun Deng
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University Guangzhou, Guangzhou, Guangdong, 510642, China
- Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Jikai Wen
- Guangdong Provincial Key Laboratory of Protein Function and Regulation in Agricultural Organisms, College of Life Sciences, South China Agricultural University Guangzhou, Guangzhou, Guangdong, 510642, China
- Key Laboratory of Zoonosis of Ministry of Agriculture and Rural Affairs, South China Agricultural University, Guangzhou, Guangdong, 510642, China
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20
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Liu Y, Li X, Zhang B, Fu Y, Yang A, Zhang H, Zhang H, Niu Y, Nie J, Yang J. CYP1A1 methylation mediates the effect of smoking and occupational polycyclic aromatic hydrocarbons co-exposure on oxidative DNA damage among Chinese coke-oven workers. Environ Health 2019; 18:69. [PMID: 31358014 PMCID: PMC6664755 DOI: 10.1186/s12940-019-0508-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Multiple factors, including co-exposure between lifestyle and environmental risks, are important in susceptibility to oxidative DNA damage. However, the underlying mechanism is not fully understood. This study was undertaken to evaluate whether Cytochrome P4501A1 (CYP1A1) methylation can mediate the co-exposure effect between smoking and occupational polycyclic aromatic hydrocarbons (PAH) in development of oxidative DNA damage. METHODS We explored the associations between smoking and occupational PAH co-exposure effect, CYP1A1 methylation and oxidative DNA damage among 500 workers from a coke-oven plant in China. Urine biomarkers of PAH exposure (1-hydroxypyrene, 1-OHP; 2-hydroxynaphthalene, 2-NAP; 2-hydroxyfluorene, 2-FLU; and 9-hydroxyphenanthren, 9-PHE) and a marker of oxidative DNA damage (8-hydroxy- 2'- deoxyguanosine, 8-OHdG) were measured by high performance liquid chromatography. CYP1A1 methylation was measured by pyrosequencing. Finally, mediation analysis was performed to investigate whether CYP1A1 methylation mediated smoking and occupational PAH co-exposure effect on oxidative DNA damage. RESULTS We observed significant associations of smoking and 1-OHP co-exposure with CYP1A1 hypomethylation (OR: 1.87, 95% CI: 1.01-3.47) and high 8-OHdG (OR: 2.13, 95% CI: 1.14-3.97). There was a significant relationship between CYP1A1 hypomethylation and high 8-OHdG (1st vs. 3rd tertile = 1.58, 95% CI: 1.01-2.47, P for trend = 0.046). In addition, mediation analysis suggested CYP1A1 hypomethylation could explain 13.6% of effect of high 8-OHdG related to smoking and 1-OHP co-exposure. CONCLUSIONS Our findings suggested that the co-exposure effect of smoking and occupational PAH could increase the risk of oxidative DNA damage by a mechanism partly involving CYP1A1 hypomethylation.
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Affiliation(s)
- Yanli Liu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Xinjiannan Road 56, Taiyuan, 030001, Shanxi, China
- Department of Preventive Medicine, School of Public Health and Management, Hubei University of Medicine, Shiyan, Hubei, China
| | - Xuejing Li
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Xinjiannan Road 56, Taiyuan, 030001, Shanxi, China
| | - Bin Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Xinjiannan Road 56, Taiyuan, 030001, Shanxi, China
| | - Ye Fu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Xinjiannan Road 56, Taiyuan, 030001, Shanxi, China
| | - Aimin Yang
- Hong Kong Institute of Diabetes and Obesity, the Chinese University of Hong Kong, Hong Kong SAR, People's Republic of China
| | - Hongjie Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Xinjiannan Road 56, Taiyuan, 030001, Shanxi, China
| | - Huitao Zhang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Xinjiannan Road 56, Taiyuan, 030001, Shanxi, China
| | - Yingying Niu
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Xinjiannan Road 56, Taiyuan, 030001, Shanxi, China
| | - Jisheng Nie
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Xinjiannan Road 56, Taiyuan, 030001, Shanxi, China
| | - Jin Yang
- Department of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan, Xinjiannan Road 56, Taiyuan, 030001, Shanxi, China.
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21
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Tsai PC, Glastonbury CA, Eliot MN, Bollepalli S, Yet I, Castillo-Fernandez JE, Carnero-Montoro E, Hardiman T, Martin TC, Vickers A, Mangino M, Ward K, Pietiläinen KH, Deloukas P, Spector TD, Viñuela A, Loucks EB, Ollikainen M, Kelsey KT, Small KS, Bell JT. Smoking induces coordinated DNA methylation and gene expression changes in adipose tissue with consequences for metabolic health. Clin Epigenetics 2018; 10:126. [PMID: 30342560 PMCID: PMC6196025 DOI: 10.1186/s13148-018-0558-0] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Accepted: 10/03/2018] [Indexed: 12/14/2022] Open
Abstract
Background Tobacco smoking is a risk factor for multiple diseases, including cardiovascular disease and diabetes. Many smoking-associated signals have been detected in the blood methylome, but the extent to which these changes are widespread to metabolically relevant tissues, and impact gene expression or metabolic health, remains unclear. Methods We investigated smoking-associated DNA methylation and gene expression variation in adipose tissue biopsies from 542 healthy female twins. Replication, tissue specificity, and longitudinal stability of the smoking-associated effects were explored in additional adipose, blood, skin, and lung samples. We characterized the impact of adipose tissue smoking methylation and expression signals on metabolic disease risk phenotypes, including visceral fat. Results We identified 42 smoking-methylation and 42 smoking-expression signals, where five genes (AHRR, CYP1A1, CYP1B1, CYTL1, F2RL3) were both hypo-methylated and upregulated in current smokers. CYP1A1 gene expression achieved 95% prediction performance of current smoking status. We validated and replicated a proportion of the signals in additional primary tissue samples, identifying tissue-shared effects. Smoking leaves systemic imprints on DNA methylation after smoking cessation, with stronger but shorter-lived effects on gene expression. Metabolic disease risk traits such as visceral fat and android-to-gynoid ratio showed association with methylation at smoking markers with functional impacts on expression, such as CYP1A1, and at tissue-shared smoking signals, such as NOTCH1. At smoking-signals, BHLHE40 and AHRR DNA methylation and gene expression levels in current smokers were predictive of future gain in visceral fat upon smoking cessation. Conclusions Our results provide the first comprehensive characterization of coordinated DNA methylation and gene expression markers of smoking in adipose tissue. The findings relate to human metabolic health and give insights into understanding the widespread health consequence of smoking outside of the lung. Electronic supplementary material The online version of this article (10.1186/s13148-018-0558-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Pei-Chien Tsai
- Department of Twin Research and Genetic Epidemiology, King's College London, London, SE1 7EH, UK. .,Department of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan. .,Division of Allergy, Asthma, and Rheumatology, Department of Pediatrics, Chang Gung Memorial Hospital, Linkou, Taiwan.
| | - Craig A Glastonbury
- Department of Twin Research and Genetic Epidemiology, King's College London, London, SE1 7EH, UK.,Big Data Institute at the Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, OX3 7LF, UK
| | - Melissa N Eliot
- Department of Epidemiology, Brown University School of Public Health, Providence, RI, 02912, USA
| | - Sailalitha Bollepalli
- Institute for Molecular Medicine Finland (FIMM) and Department of Public Health, University of Helsinki, Helsinki, Finland
| | - Idil Yet
- Department of Twin Research and Genetic Epidemiology, King's College London, London, SE1 7EH, UK.,Department of Bioinformatics, Institute of Health Sciences, Hacettepe University, 06100, Ankara, Turkey
| | | | - Elena Carnero-Montoro
- Department of Twin Research and Genetic Epidemiology, King's College London, London, SE1 7EH, UK.,Pfizer - University of Granada - Andalusian Government Center for Genomics and Oncological Research (GENYO), Granada, Spain
| | - Thomas Hardiman
- Department of Twin Research and Genetic Epidemiology, King's College London, London, SE1 7EH, UK.,Division of Cancer Studies, King's College London, London, SE1 9RT, UK
| | - Tiphaine C Martin
- Department of Twin Research and Genetic Epidemiology, King's College London, London, SE1 7EH, UK.,Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York City, NY, 10029, USA.,The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York City, NY, 10029, USA
| | - Alice Vickers
- Department of Twin Research and Genetic Epidemiology, King's College London, London, SE1 7EH, UK.,Centre for Stem Cells and Regenerative Medicine, King's College London, Floor 28, Tower Wing, Guy's Hospital, Great Maze Pond, London, SE1 9RT, UK
| | - Massimo Mangino
- Department of Twin Research and Genetic Epidemiology, King's College London, London, SE1 7EH, UK.,NIHR Biomedical Research Centre at Guy's and St Thomas' Foundation Trust, London, SE1 9RT, UK
| | - Kirsten Ward
- Department of Twin Research and Genetic Epidemiology, King's College London, London, SE1 7EH, UK
| | - Kirsi H Pietiläinen
- Research Programs Unit, Diabetes and Obesity, Obesity Research Unit, University of Helsinki, Helsinki, Finland.,Endocrinology, Abdominal Center, Helsinki University Hospital, Helsinki, Finland
| | - Panos Deloukas
- William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, EC1M 6BQ, UK.,Princess Al-Jawhara Al-Brahim Centre of Excellence in Research of Hereditary Disorders (PACER-HD), King Abdulaziz University, Jeddah, Saudi Arabia
| | - Tim D Spector
- Department of Twin Research and Genetic Epidemiology, King's College London, London, SE1 7EH, UK
| | - Ana Viñuela
- Department of Twin Research and Genetic Epidemiology, King's College London, London, SE1 7EH, UK.,Department of Genetic Medicine and Development, University of Geneva Medical School, 1211, Geneva, Switzerland.,Institute for Genetics and Genomics in Geneva (iGE3), University of Geneva, 1211, Geneva, Switzerland.,Swiss Institute of Bioinformatics, 1211, Geneva, Switzerland
| | - Eric B Loucks
- Department of Epidemiology, Brown University School of Public Health, Providence, RI, 02912, USA
| | - Miina Ollikainen
- Institute for Molecular Medicine Finland (FIMM) and Department of Public Health, University of Helsinki, Helsinki, Finland
| | - Karl T Kelsey
- Department of Epidemiology, Brown University School of Public Health, Providence, RI, 02912, USA.,Department of Laboratory Medicine & Pathology, Brown University, Providence, RI, 02912, USA
| | - Kerrin S Small
- Department of Twin Research and Genetic Epidemiology, King's College London, London, SE1 7EH, UK
| | - Jordana T Bell
- Department of Twin Research and Genetic Epidemiology, King's College London, London, SE1 7EH, UK.
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22
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Mitsui Y, Chang I, Kato T, Hashimoto Y, Yamamura S, Fukuhara S, Wong DK, Shiina M, Imai-Sumida M, Majid S, Saini S, Shiina H, Nakajima K, Deng G, Dahiya R, Tanaka Y. Functional role and tobacco smoking effects on methylation of CYP1A1 gene in prostate cancer. Oncotarget 2018; 7:49107-49121. [PMID: 27203547 PMCID: PMC5226494 DOI: 10.18632/oncotarget.9470] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 05/04/2016] [Indexed: 01/03/2023] Open
Abstract
Cytochrome P450 (CYP) 1A1 is a phase I enzyme that can activate various compounds into reactive forms and thus, may contribute to carcinogenesis. In this study, we investigated the expression, methylation status, and functional role of CYP1A1 on prostate cancer cells. Increased expression of CYP1A1 was observed in all cancer lines (PC-3, LNCaP, and DU145) compared to BPH-1 (P < 0.05); and was enhanced further by 5-aza-2′-deoxycytidine treatment (P < 0.01). Methylation-specific PCR (MSP) and sequencing of bisulfite-modified DNA of the xenobiotic response element (XRE) enhancer site XRE-1383 indicated promoter methylation as a regulator of CYP1A1 expression. In tissue, microarrays showed higher immunostaining of CYP1A1 in prostate cancer than normal and benign prostatic hyperplasia (BPH; P < 0.001), and methylation analyses in clinical specimens revealed significantly lower methylation levels in cancer compared to BPH at all enhancer sites analyzed (XRE-1383, XRE-983, XRE-895; P < 0.01). Interestingly, smoking affected the XRE-1383 site where the methylation level was much lower in cancer tissues from smokers than non-smokers (P < 0.05). CYP1A1 levels are thus increased in prostate cancer and to determine the functional effect of CYP1A1 on cells, we depleted the gene in LNCaP and DU145 by siRNA. We observe that CYP1A1 knockdown decreased cell proliferation (P < 0.05) and increased apoptosis (P < 0.01) in both cell lines. We analyzed genes affected by CYP1A1 silencing and found that apoptosis-related BCL2 was significantly down-regulated. This study supports an oncogenic role for CYP1A1 in prostate cancer via promoter hypomethylation that is influenced by tobacco smoking, indicating CYP1A1 to be a promising target for prostate cancer treatment.
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Affiliation(s)
- Yozo Mitsui
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA.,Department of Urology, Shimane University Faculty of Medicine, Izumo, 693-8501, Japan
| | - Inik Chang
- Department of Oral Biology, Yonsei University College of Density, Seoul, 120-752, South Korea
| | - Taku Kato
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA
| | - Yutaka Hashimoto
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA
| | - Soichiro Yamamura
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA
| | - Shinichiro Fukuhara
- Department of Urology, Osaka University Graduate School of Medicine, Suita, 565-0871, Japan
| | - Darryn K Wong
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA
| | - Marisa Shiina
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA
| | - Mitsuho Imai-Sumida
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA
| | - Shahana Majid
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA
| | - Sharanjot Saini
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA
| | - Hiroaki Shiina
- Department of Urology, Shimane University Faculty of Medicine, Izumo, 693-8501, Japan
| | - Koichi Nakajima
- Department of Urology, Toho University Faculty of Medicine, Tokyo, 143-8540, Japan
| | - Guoren Deng
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA
| | - Rajvir Dahiya
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA
| | - Yuichiro Tanaka
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA
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23
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Jeon JP, Koh IU, Choi NH, Kim BJ, Han BG, Lee S. Differential DNA methylation of MSI2 and its correlation with diabetic traits. PLoS One 2017; 12:e0177406. [PMID: 28542303 PMCID: PMC5443489 DOI: 10.1371/journal.pone.0177406] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 04/26/2017] [Indexed: 01/03/2023] Open
Abstract
Differential DNA methylation with hyperglycemia is significantly associated with Type 2 Diabetes (T2D). Longtime extended exposure to high blood glucose levels can affect the epigenetic signatures in all organs. However, the relevance of the differential DNA methylation changes with hyperglycemia in blood with pancreatic islets remains unclear. We investigated differential DNA methylation in relation to glucose homeostasis based on the Oral Glucose Tolerance Test (OGTT) in a population-based cohort. We found a total of 382 differential methylation sites from blood DNA in hyperglycemia and type 2 diabetes subgroups using a longitudinal and cross-sectional approach. Among them, three CpG sites were overlapped; they were mapped to the MSI2 and CXXC4 genes. In a DNA methylation replication study done by pyrosequencing (n = 440), the CpG site of MSI2 were shown to have strong associations with the T2D group (p value = 2.20E-16). The differential methylation of MSI2 at chr17:55484635 was associated with diabetes-related traits, in particular with insulin sensitivity (QUICKI, p value = 2.20E-16) and resistance (HOMA-IR, p value = 1.177E-07). In human pancreatic islets, at the single-base resolution (using whole-genome bisulfite sequencing), the 292 CpG sites in the ±5kb at chr17:55484635 were found to be significantly hypo-methylated in donors with T2D (average decrease = 13.91%, 95% confidence interval (CI) = 4.18~ 17.06) as compared to controls, and methylation patterns differed by sex (-9.57%, CI = -16.76~ -6.89) and age (0.12%, CI = -11.17~ 3.77). Differential methylation of the MSI2 gene (chr17:55484635) in blood and islet cells is strongly related to hyperglycemia. Our findings suggest that epigenetic perturbation on the target site of MSI2 gene in circulating blood and pancreatic islets should represent or affect hyperglycemia.
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Affiliation(s)
- Jae-Pil Jeon
- Center for Biomedical Science, National Research Institute of Health, Cheongju-si, Republic of Korea
| | - In-Uk Koh
- Center for Genome Science, National Research Institute of Health, Cheongju-si, Republic of Korea
| | - Nak-Hyun Choi
- Center for Genome Science, National Research Institute of Health, Cheongju-si, Republic of Korea
| | - Bong-Jo Kim
- Center for Genome Science, National Research Institute of Health, Cheongju-si, Republic of Korea
| | - Bok-Ghee Han
- Center for Genome Science, National Research Institute of Health, Cheongju-si, Republic of Korea
- * E-mail: (SL); (BGH)
| | - Suman Lee
- Center for Genome Science, National Research Institute of Health, Cheongju-si, Republic of Korea
- * E-mail: (SL); (BGH)
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24
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Xie C, Pogribna M, Word B, Lyn‐Cook L, Lyn‐Cook BD, Hammons GJ. In vitro analysis of factors influencing CYP1A2 expression as potential determinants of interindividual variation. Pharmacol Res Perspect 2017; 5:e00299. [PMID: 28357125 PMCID: PMC5368963 DOI: 10.1002/prp2.299] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 12/14/2016] [Accepted: 01/10/2017] [Indexed: 12/17/2022] Open
Abstract
Individual differences in drug metabolism contribute to interindividual variation that characterizes responses to drugs and risk in exposure to foreign chemicals. Large individual differences are found in expression levels of CYP1A2, a major drug-metabolizing enzyme. Underlying causes for this variation are not well understood. Several factors, including tobacco smoking, consumption of cruciferous vegetables, and sex, have been associated with modulating CYP1A2 expression. To understand factors regulating expression of CYP1A2 in establishing a causal relationship, this study examined effects of cigarette smoke condensate (CSC), indole-3-carbinol (I3C), and 17β-estradiol (estradiol) on CYP1A2 expression in in vitro systems using human liver and lung cells. Treatment with CSC (2-25 μg/mL) significantly increased levels of CYP1A2 in six cell lines examined, in a concentration- and time-dependent manner. Fold changes in expression levels relative to controls varied among cell lines. CYP1A2 enzymatic activity also increased with CSC exposure. Treatment of H1299 and HepB3 cells with dietary agent I3C (50 and 100 μmol/L) increased CYP1A2 expression. In human cell lines H1299 and H1395, treatment with estradiol (10 and 100 nmol/L) significantly reduced expression of CYP1A2. Using ChIP assays, effects of CSC on histone modifications were analyzed. Increases in H3K4me3 and H4K16ac were observed at several segments in the CYP1A2 gene, whereas H3K27me3 decreased, following CSC treatment. These results suggest that CYP1A2 expression is affected epigenetically by CSC. Additional studies will be needed to further establish regulatory mechanisms underlying effects of various environmental, dietary, and endogenous factors on CYP1A2 expression in better predicting individual variation.
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Affiliation(s)
- ChengHui Xie
- Division of Biochemical ToxicologyFDA/National Center for Toxicological ResearchJeffersonArkansas72079
| | - Marta Pogribna
- Division of Biochemical ToxicologyFDA/National Center for Toxicological ResearchJeffersonArkansas72079
| | - Beverly Word
- Division of Biochemical ToxicologyFDA/National Center for Toxicological ResearchJeffersonArkansas72079
| | - Lascelles Lyn‐Cook
- Division of Biochemical ToxicologyFDA/National Center for Toxicological ResearchJeffersonArkansas72079
| | - Beverly D. Lyn‐Cook
- Division of Biochemical ToxicologyFDA/National Center for Toxicological ResearchJeffersonArkansas72079
| | - George J. Hammons
- Division of Biochemical ToxicologyFDA/National Center for Toxicological ResearchJeffersonArkansas72079
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25
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Regulation of Human Cytochrome P4501A1 (hCYP1A1): A Plausible Target for Chemoprevention? BIOMED RESEARCH INTERNATIONAL 2016; 2016:5341081. [PMID: 28105425 PMCID: PMC5220472 DOI: 10.1155/2016/5341081] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 11/09/2016] [Accepted: 11/13/2016] [Indexed: 12/13/2022]
Abstract
Human cytochrome P450 1A1 (hCYP1A1) has been an object of study due to its role in precarcinogen metabolism; for this reason it is relevant to know more in depth the mechanisms that rule out its expression and activity, which make this enzyme a target for the development of novel chemiopreventive agents. The aim of this work is to review the origin, regulation, and structural and functional characteristics of CYP1A1 letting us understand its role in the bioactivation of precarcinogen and the consequences of its modulation in other physiological processes, as well as guide us in the study of this important protein.
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26
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Majchrzak-Celińska A, Baer-Dubowska W. Pharmacoepigenetics: an element of personalized therapy? Expert Opin Drug Metab Toxicol 2016; 13:387-398. [PMID: 27860490 DOI: 10.1080/17425255.2017.1260546] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Epigenetics is a rapidly growing field describing heritable alterations in gene expression that do not involve DNA sequence variations. Advances in epigenetics and epigenomics have influenced pharmacology, leading to the development of a new specialty, pharmacoepigenetics, the study of the epigenetic basis for the individual variation in drug response. Areas covered: We present an overview of the major epigenetic mechanisms and their effects on the expression of drug metabolizing enzymes and drug transporters, as well as the epigenetic status of drug protein targets affecting therapy response. Recent advances in the development of pharmacoepigenetic biomarkers and epidrugs are also discussed. Expert opinion: There is growing evidence that pharmacoepigenetics has the potential to become an important element of personalized medicine. Epigenetic modifications influence drug response, but they can also be modulated by drugs. Moreover, they can be monitored not only in the affected tissue, but also in body fluids. Nevertheless, there are very few examples of epigenetic biomarkers implemented in the clinical setting. Explanation of the interplay between genomic and epigenomic changes will contribute to the personalized medicine approach. Ultimately, both genetic biomarkers and epigenetic mechanisms should be taken into consideration in predicting drug response in the course of successful personalized therapy.
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Affiliation(s)
| | - Wanda Baer-Dubowska
- a Department of Pharmaceutical Biochemistry , Poznan University of Medical Sciences , Poznań , Poland
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Tekpli X, Skaug V, Bæra R, Phillips DH, Haugen A, Mollerup S. Estrogen receptor expression and gene promoter methylation in non-small cell lung cancer - a short report. Cell Oncol (Dordr) 2016; 39:583-589. [PMID: 27572263 DOI: 10.1007/s13402-016-0295-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/11/2016] [Indexed: 11/29/2022] Open
Abstract
PURPOSE In the past, anomalous estrogen receptor (ER) regulation has been associated with various lung pathologies, but so far its involvement in lung cancer initiation and/or progression has remained unclear. Here, we aimed at assessing in vivo and in vitro ER expression and its possible epigenetic regulation in non-small cell lung cancer (NSCLC) samples and their corresponding normal tissues and cells. METHODS ERα and ERβ gene expression levels were assessed using real time quantitative PCR (RT-qPCR), whereas ERα and ERβ gene promoter methylation levels were assessed using DNA bisulfite conversion followed by pyrosequencing. We included NSCLC (n = 87) and adjacent histologically normal lung tissue samples from lung cancer patients (n = 184), primary normal bronchial epithelial-derived cell cultures (n = 11), immortalized bronchial epithelial-derived cell lines (n = 3) and NSCLC derived cell lines (n = 9). RESULTS Using RT-qPCR we found significantly lower ERα and ERβ expression levels in the NSCLC tissue samples compared to their normal adjacent tissue samples. These lower ER expression levels were confirmed in vitro using primary normal bronchial epithelial-derived cell cultures, immortalized bronchial epithelial-derived cell lines and NSCLC-derived cell lines. By using this latter panel of cells, we found that ER gene promoter hypermethylation was associated with decreased ER expression. In addition we found that in tumor and normal lung tissues, smoking was associated with decreased ER expression and that normal lung tissues with a low ERβ expression level exhibited increased smoking-related DNA adducts. CONCLUSIONS Taken together, our results indicate that decreased ER expression mediated by DNA methylation may play a role in NSCLC development.
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Affiliation(s)
- Xavier Tekpli
- Section for Toxicology and Biological Working Environment, Department of Biological and Chemical Working Environment, National Institute of Occupational Health, PO box 8149, Dep., Gydas vei 8, N-0033, Oslo, Norway. .,Department of Genetics, Institute for Cancer Research, Oslo University Hospital - The Norwegian Radium Hospital, Oslo, Norway.
| | - Vidar Skaug
- Section for Toxicology and Biological Working Environment, Department of Biological and Chemical Working Environment, National Institute of Occupational Health, PO box 8149, Dep., Gydas vei 8, N-0033, Oslo, Norway
| | - Rita Bæra
- Section for Toxicology and Biological Working Environment, Department of Biological and Chemical Working Environment, National Institute of Occupational Health, PO box 8149, Dep., Gydas vei 8, N-0033, Oslo, Norway
| | - David H Phillips
- Analytical and Environmental Sciences, MRC-PHE Centre for Environment and Health, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London, SE1 9NH, UK
| | - Aage Haugen
- Section for Toxicology and Biological Working Environment, Department of Biological and Chemical Working Environment, National Institute of Occupational Health, PO box 8149, Dep., Gydas vei 8, N-0033, Oslo, Norway
| | - Steen Mollerup
- Section for Toxicology and Biological Working Environment, Department of Biological and Chemical Working Environment, National Institute of Occupational Health, PO box 8149, Dep., Gydas vei 8, N-0033, Oslo, Norway
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Tekpli X, Urbanucci A, Hashim A, Vågbø CB, Lyle R, Kringen MK, Staff AC, Dybedal I, Mills IG, Klungland A, Staerk J. Changes of 5-hydroxymethylcytosine distribution during myeloid and lymphoid differentiation of CD34+ cells. Epigenetics Chromatin 2016; 9:21. [PMID: 27252783 PMCID: PMC4888655 DOI: 10.1186/s13072-016-0070-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Accepted: 05/20/2016] [Indexed: 01/01/2023] Open
Abstract
Background Hematopoietic stem cell renewal and differentiation are regulated through epigenetic processes. The conversion of 5-methylcytosine into 5-hydroxymethylcytosine (5hmC) by ten-eleven-translocation enzymes provides new insights into the epigenetic regulation of gene expression during development. Here, we studied the potential gene regulatory role of 5hmC during human hematopoiesis. Results We used reduced representation of 5-hydroxymethylcytosine profiling (RRHP) to characterize 5hmC distribution in CD34+ cells, CD4+ T cells, CD19+ B cells, CD14+ monocytes and granulocytes. In all analyzed blood cell types, the presence of 5hmC at gene bodies correlates positively with gene expression, and highest 5hmC levels are found around transcription start sites of highly expressed genes. In CD34+ cells, 5hmC primes for the expression of genes regulating myeloid and lymphoid lineage commitment. Throughout blood cell differentiation, intragenic 5hmC is maintained at genes that are highly expressed and required for acquisition of the mature blood cell phenotype. Moreover, in CD34+ cells, the presence of 5hmC at enhancers associates with increased binding of RUNX1 and FLI1, transcription factors essential for hematopoiesis. Conclusions Our study provides a comprehensive genome-wide overview of 5hmC distribution in human hematopoietic cells and new insights into the epigenetic regulation of gene expression during human hematopoiesis. Electronic supplementary material The online version of this article (doi:10.1186/s13072-016-0070-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xavier Tekpli
- Nordic European Molecular Laboratory (EMBL) Partnership, Centre for Molecular Medicine Norway, University of Oslo, Blindern, P.O. Box 1137, 0318 Oslo, Norway ; Department of Genetics, Institute for Cancer Research, Oslo University Hospital - The Norwegian Radium Hospital, Oslo, Norway
| | - Alfonso Urbanucci
- Nordic European Molecular Laboratory (EMBL) Partnership, Centre for Molecular Medicine Norway, University of Oslo, Blindern, P.O. Box 1137, 0318 Oslo, Norway ; Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Adnan Hashim
- Nordic European Molecular Laboratory (EMBL) Partnership, Centre for Molecular Medicine Norway, University of Oslo, Blindern, P.O. Box 1137, 0318 Oslo, Norway
| | - Cathrine B Vågbø
- Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - Robert Lyle
- Department of Medical Genetics, University of Oslo, Oslo University Hospital, Oslo, Norway
| | - Marianne K Kringen
- Department of Pharmacology, Oslo University Hospital, Ullevål, Oslo, Norway
| | - Anne Cathrine Staff
- Department of Obstetrics and Gynecology, Oslo University Hospital, University of Oslo, Oslo, Norway
| | - Ingunn Dybedal
- Department of Haematology, Oslo University Hospital, Oslo, Norway
| | - Ian G Mills
- Nordic European Molecular Laboratory (EMBL) Partnership, Centre for Molecular Medicine Norway, University of Oslo, Blindern, P.O. Box 1137, 0318 Oslo, Norway ; Department of Molecular Oncology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway ; PCUK Movember Centre of Excellence, CCRCB, Queen's University, Belfast, UK
| | - Arne Klungland
- Clinic for Diagnostics and Intervention, Institute of Medical Microbiology, Oslo University Hospital, University of Oslo, Oslo, Norway ; Norwegian Center for Stem Cell Research, University of Oslo, Oslo, Norway
| | - Judith Staerk
- Nordic European Molecular Laboratory (EMBL) Partnership, Centre for Molecular Medicine Norway, University of Oslo, Blindern, P.O. Box 1137, 0318 Oslo, Norway ; Department of Haematology, Oslo University Hospital, Oslo, Norway ; Norwegian Center for Stem Cell Research, University of Oslo, Oslo, Norway
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Sirchia SM, Faversani A, Rovina D, Russo MV, Paganini L, Savi F, Augello C, Rosso L, Del Gobbo A, Tabano S, Bosari S, Miozzo M. Epigenetic effects of chromatin remodeling agents on organotypic cultures. Epigenomics 2016; 8:341-58. [PMID: 26949823 DOI: 10.2217/epi.15.111] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Tumor epigenetic defects are of increasing relevance to clinical practice, because they are 'druggable' targets for cancer therapy using chromatin-remodeling agents (CRAs). New evidences highlight the importance of the microenvironment on the epigenome regulation and the need to use culture models able to preserve tissue morphology, to better understand the action of CRAs. Methods & methods: We studied the epigenetic response induced by culturing and CRAs in a preclinical model, preserving ex vivo the original tissue microenvironment and morphology, assessing different epigenetic signatures. Our overall findings suggest that culturing and CRAs cause heterogeneous effects on the genes methylation; CRAs affect the global DNA methylation and can trigger an active DNA demethylation; the culture induces alterations in the histone deacetylase expression. CONCLUSION Despite the limited number of cases, these findings can be considered a proof of concept of the possibility to test CRAs epigenetic effects on ex vivo tissues maintained in their native tissue architecture.
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Affiliation(s)
- Silvia M Sirchia
- Medical Genetics, Department of Health Sciences, Università degli Studi di Milano, 20142 Milano, Italy
| | - Alice Faversani
- Division of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milano, Italy
| | - Davide Rovina
- Medical Genetics, Department of Health Sciences, Università degli Studi di Milano, 20142 Milano, Italy
| | - Maria V Russo
- Division of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milano, Italy
| | - Leda Paganini
- Division of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milano, Italy.,Department of Pathophysiology & Transplantation, Università degli Studi di Milano, 20122 Milano, Italy
| | - Federica Savi
- Division of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milano, Italy
| | - Claudia Augello
- Division of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milano, Italy.,Department of Pathophysiology & Transplantation, Università degli Studi di Milano, 20122 Milano, Italy
| | - Lorenzo Rosso
- Division of Thoracic Surgery & Lung Transplantation, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milano, Italy
| | - Alessandro Del Gobbo
- Division of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milano, Italy
| | - Silvia Tabano
- Division of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milano, Italy.,Department of Pathophysiology & Transplantation, Università degli Studi di Milano, 20122 Milano, Italy
| | - Silvano Bosari
- Division of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milano, Italy.,Department of Pathophysiology & Transplantation, Università degli Studi di Milano, 20122 Milano, Italy
| | - Monica Miozzo
- Division of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milano, Italy.,Department of Pathophysiology & Transplantation, Università degli Studi di Milano, 20122 Milano, Italy
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Fisel P, Schaeffeler E, Schwab M. DNA Methylation of ADME Genes. Clin Pharmacol Ther 2016; 99:512-27. [PMID: 27061006 DOI: 10.1002/cpt.343] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 01/18/2016] [Accepted: 01/20/2016] [Indexed: 12/13/2022]
Abstract
The epigenetic regulation of expression of genes involved in the absorption, distribution, metabolism, and excretion (ADME) of drugs contributes to interindividual variability in drug response. Epigenetic mechanisms include DNA methylation, histone modifications, and miRNAs. This review systematically outlines the influence of DNA methylation on ADME gene expression and highlights the consequences for interindividual variability in drug response or drug-induced toxicity and the implications for personalized medicine.
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Affiliation(s)
- P Fisel
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany.,University of Tübingen, Tübingen, Germany
| | - E Schaeffeler
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany.,University of Tübingen, Tübingen, Germany
| | - M Schwab
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany.,Department of Clinical Pharmacology, University Hospital Tübingen, Tübingen, Germany.,Department of Pharmacy and Biochemistry, University of Tübingen, Tübingen, Germany
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Park HJ, Choi YJ, Kim JW, Chun HS, Im I, Yoon S, Han YM, Song CW, Kim H. Differences in the Epigenetic Regulation of Cytochrome P450 Genes between Human Embryonic Stem Cell-Derived Hepatocytes and Primary Hepatocytes. PLoS One 2015; 10:e0132992. [PMID: 26177506 PMCID: PMC4503736 DOI: 10.1371/journal.pone.0132992] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 06/23/2015] [Indexed: 12/30/2022] Open
Abstract
Human pluripotent stem cell-derived hepatocytes have the potential to provide in vitro model systems for drug discovery and hepatotoxicity testing. However, these cells are currently unsuitable for drug toxicity and efficacy testing because of their limited expression of genes encoding drug-metabolizing enzymes, especially cytochrome P450 (CYP) enzymes. Transcript levels of major CYP genes were much lower in human embryonic stem cell-derived hepatocytes (hESC-Hep) than in human primary hepatocytes (hPH). To verify the mechanism underlying this reduced expression of CYP genes, including CYP1A1, CYP1A2, CYP1B1, CYP2D6, and CYP2E1, we investigated their epigenetic regulation in terms of DNA methylation and histone modifications in hESC-Hep and hPH. CpG islands of CYP genes were hypermethylated in hESC-Hep, whereas they had an open chromatin structure, as represented by hypomethylation of CpG sites and permissive histone modifications, in hPH. Inhibition of DNA methyltransferases (DNMTs) during hepatic maturation induced demethylation of the CpG sites of CYP1A1 and CYP1A2, leading to the up-regulation of their transcription. Combinatorial inhibition of DNMTs and histone deacetylases (HDACs) increased the transcript levels of CYP1A1, CYP1A2, CYP1B1, and CYP2D6. Our findings suggest that limited expression of CYP genes in hESC-Hep is modulated by epigenetic regulatory factors such as DNMTs and HDACs.
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Affiliation(s)
- Han-Jin Park
- Department of Biological Sciences and Center for Stem Cell Differentiation, Korea Advanced Institute of Science and Technology, Daejeon, 305–701, Republic of Korea
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, 305–343, Republic of Korea
| | - Young-Jun Choi
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, 305–343, Republic of Korea
- Human and Environmental Toxicology, School of Engineering, University of Science and Technology, Daejeon, 303–333, Republic of Korea
| | - Ji Woo Kim
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, 305–343, Republic of Korea
| | - Hang-Suk Chun
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, 305–343, Republic of Korea
| | - Ilkyun Im
- Department of Biological Sciences and Center for Stem Cell Differentiation, Korea Advanced Institute of Science and Technology, Daejeon, 305–701, Republic of Korea
| | - Seokjoo Yoon
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, 305–343, Republic of Korea
- Human and Environmental Toxicology, School of Engineering, University of Science and Technology, Daejeon, 303–333, Republic of Korea
| | - Yong-Mahn Han
- Department of Biological Sciences and Center for Stem Cell Differentiation, Korea Advanced Institute of Science and Technology, Daejeon, 305–701, Republic of Korea
| | - Chang-Woo Song
- Department of Inhalation Research, Korea Institute of Toxicology, Jeollabuk-do, 580–185, Republic of Korea
- Human and Environmental Toxicology, School of Engineering, University of Science and Technology, Daejeon, 303–333, Republic of Korea
| | - Hyemin Kim
- Department of Predictive Toxicology, Korea Institute of Toxicology, Daejeon, 305–343, Republic of Korea
- * E-mail:
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Tang J, Xiong Y, Zhou HH, Chen XP. DNA methylation and personalized medicine. J Clin Pharm Ther 2014; 39:621-7. [PMID: 25230364 DOI: 10.1111/jcpt.12206] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2013] [Accepted: 08/17/2014] [Indexed: 12/12/2022]
Affiliation(s)
- J. Tang
- Department of Clinical Pharmacology; Xiangya Hospital; Central South University; Changsha China
- Pharmacogenetics Research Institute; Institute of Clinical Pharmacology; Hunan Key laboratory of Pharmacogenetics; Central South University; Changsha China
| | - Y. Xiong
- Department of Clinical Pharmacology; Xiangya Hospital; Central South University; Changsha China
- Pharmacogenetics Research Institute; Institute of Clinical Pharmacology; Hunan Key laboratory of Pharmacogenetics; Central South University; Changsha China
| | - H.-H. Zhou
- Department of Clinical Pharmacology; Xiangya Hospital; Central South University; Changsha China
- Pharmacogenetics Research Institute; Institute of Clinical Pharmacology; Hunan Key laboratory of Pharmacogenetics; Central South University; Changsha China
| | - X.-P. Chen
- Department of Clinical Pharmacology; Xiangya Hospital; Central South University; Changsha China
- Pharmacogenetics Research Institute; Institute of Clinical Pharmacology; Hunan Key laboratory of Pharmacogenetics; Central South University; Changsha China
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Vorrink SU, Hudachek DR, Domann FE. Epigenetic determinants of CYP1A1 induction by the aryl hydrocarbon receptor agonist 3,3',4,4',5-pentachlorobiphenyl (PCB 126). Int J Mol Sci 2014; 15:13916-31. [PMID: 25116688 PMCID: PMC4159831 DOI: 10.3390/ijms150813916] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 08/06/2014] [Accepted: 08/07/2014] [Indexed: 11/17/2022] Open
Abstract
Many enzymes involved in xenobiotic metabolism, including cytochrome P450 (CYP) 1A1, are regulated by the aryl hydrocarbon receptor (AhR). 3,3',4,4',5-Pentachlorobiphenyl (PCB 126) is a potent ligand for AhR and can thus induce the expression of CYP1A1. Interestingly, we observed that human carcinoma cell lines derived from different types of epithelial cells displayed divergent degrees of CYP1A1 induction after exposure to PCB 126. Since epigenetic mechanisms are known to be involved in cell type-specific gene expression, we sought to assess the epigenetic determinants of CYP1A1 induction in these carcinoma cell lines. In contrast to HepG2 hepatocarcinoma cells, HeLa cervical carcinoma cells showed significantly lower levels of CYP1A1 mRNA expression following PCB 126 exposure. Our results show that the two cell lines maintained differences in the chromatin architecture along the CYP1A1 promoter region. Furthermore, treatment with the epigenetic modifiers, trichostatin A (TSA) and 5-aza-2'-deoxycytidine (5-Aza-dC), significantly increased the expression of CYP1A1 after PCB 126 treatment in HeLa cells. However, we did not observe apparent differences in methylation levels or specific location of CpG DNA methylation between the two cell lines in the analyzed CYP1A1 promoter region. Taken together, our findings suggest that the differences in CYP1A1 expression between HepG2 and HeLa cells are due to differences in the chromatin architecture of the CYP1A1 promoter and thus establish a role of epigenetic regulation in cell-specific CYP1A1 expression.
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Affiliation(s)
- Sabine U Vorrink
- Interdisciplinary Graduate Program in Human Toxicology, the University of Iowa, Iowa City, IA 52242, USA.
| | - Danielle R Hudachek
- Department of Radiation Oncology, the University of Iowa, Iowa City, IA 52242, USA.
| | - Frederick E Domann
- Interdisciplinary Graduate Program in Human Toxicology, the University of Iowa, Iowa City, IA 52242, USA.
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Harlid S, Xu Z, Panduri V, Sandler DP, Taylor JA. CpG sites associated with cigarette smoking: analysis of epigenome-wide data from the Sister Study. ENVIRONMENTAL HEALTH PERSPECTIVES 2014; 122:673-8. [PMID: 24704585 PMCID: PMC4080519 DOI: 10.1289/ehp.1307480] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Accepted: 04/02/2014] [Indexed: 05/19/2023]
Abstract
BACKGROUND Smoking increases the risk of many diseases, and it is also linked to blood DNA methylation changes that may be important in disease etiology. OBJECTIVES We sought to identify novel CpG sites associated with cigarette smoking. METHODS We used two epigenome-wide data sets from the Sister Study to identify and confirm CpG sites associated with smoking. One included 908 women with methylation measurements at 27,578 CpG sites using the HumanMethylation27 BeadChip; the other included 200 women with methylation measurements for 473,844 CpG sites using the HumanMethylation450 BeadChip. Significant CpGs from the second data set that were not included in the 27K assay were validated by pyrosequencing in a subset of 476 samples from the first data set. RESULTS Our study successfully confirmed smoking associations for 9 previously established CpGs and identified 2 potentially novel CpGs: cg26764244 in GNG12 (p = 9.0 × 10-10) and cg22335340 in PTPN6 (p = 2.9 × 10-05). We also found strong evidence of an association between smoking status and cg02657160 in CPOX (p = 7.3 × 10-7), which has not been previously reported. All 12 CpGs were undermethylated in current smokers and showed an increasing percentage of methylation in former and never-smokers. CONCLUSIONS We identified 2 potentially novel smoking related CpG sites, and provided independent replication of 10 previously reported CpGs sites related to smoking, one of which is situated in the gene CPOX. The corresponding enzyme is involved in heme biosynthesis, and smoking is known to increase heme production. Our study extends the evidence base for smoking-related changes in DNA methylation.
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Dendelé B, Tekpli X, Hardonnière K, Holme JA, Debure L, Catheline D, Arlt VM, Nagy E, Phillips DH, Ovrebø S, Mollerup S, Poët M, Chevanne M, Rioux V, Dimanche-Boitrel MT, Sergent O, Lagadic-Gossmann D. Protective action of n-3 fatty acids on benzo[a]pyrene-induced apoptosis through the plasma membrane remodeling-dependent NHE1 pathway. Chem Biol Interact 2014; 207:41-51. [PMID: 24246761 DOI: 10.1016/j.cbi.2013.11.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 10/10/2013] [Accepted: 11/03/2013] [Indexed: 11/26/2022]
Abstract
Plasma membrane is an early target of polycyclic aromatic hydrocarbons (PAH). We previously showed that the PAH prototype, benzo[a]pyrene (B[a]P), triggers apoptosis via DNA damage-induced p53 activation (genotoxic pathway) and via remodeling of the membrane cholesterol-rich microdomains called lipid rafts, leading to changes in pH homeostasis (non-genotoxic pathway). As omega-3 (n-3) fatty acids can affect membrane composition and function or hamper in vivo PAH genotoxicity, we hypothesized that addition of physiologically relevant levels of polyunsaturated n-3 fatty acids (PUFAs) might interfere with B[a]P-induced toxicity. The effects of two major PUFAs, docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), were tested on B[a]P cytotoxicity in the liver epithelial cell line F258. Both PUFAs reduced B[a]P-induced apoptosis. Surprisingly, pre-treatment with DHA increased the formation of reactive B[a]P metabolites, resulting in higher levels of B[a]P-DNA adducts. EPA had no apparent effect on B[a]P metabolism or related DNA damage. EPA and DHA prevented B[a]P-induced apoptotic alkalinization by affecting Na(+)/H(+) exchanger 1 activity. Thus, the inhibitory effects of omega-3 fatty acids on B[a]P-induced apoptosis involve a non-genotoxic pathway associated with plasma membrane remodeling. Our results suggest that dietary omega-3 fatty acids may have marked effects on the biological consequences of PAH exposure.
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Affiliation(s)
- Béatrice Dendelé
- Inserm U1085, Institut de Recherche en Santé, Environnement, Travail, Rennes, France; Université de Rennes 1, SFR Biosit, Rennes, France
| | | | - Kévin Hardonnière
- Inserm U1085, Institut de Recherche en Santé, Environnement, Travail, Rennes, France; Université de Rennes 1, SFR Biosit, Rennes, France
| | - Jørn A Holme
- Division of Environmental Medicine, Norwegian Institute of Public Health, Oslo, Norway
| | - Laure Debure
- Inserm U1085, Institut de Recherche en Santé, Environnement, Travail, Rennes, France; Université de Rennes 1, SFR Biosit, Rennes, France
| | - Daniel Catheline
- Laboratoire de Biochimie, INRA, Agrocampus Rennes, Rennes, France
| | - Volker M Arlt
- Analytical and Environmental Sciences Division, MRC-HPA Centre for Environment & Health, King's College London, London, UK
| | - Eszter Nagy
- Analytical and Environmental Sciences Division, MRC-HPA Centre for Environment & Health, King's College London, London, UK
| | - David H Phillips
- Analytical and Environmental Sciences Division, MRC-HPA Centre for Environment & Health, King's College London, London, UK
| | - Steinar Ovrebø
- Section for Toxicology, Department of Biological and Chemical Working Environment, National Institute of Occupational Health, N-0033 Oslo, Norway
| | - Steen Mollerup
- Section for Toxicology, Department of Biological and Chemical Working Environment, National Institute of Occupational Health, N-0033 Oslo, Norway
| | - Mallory Poët
- Université de Nice Sophia Antipolis, CNRS UMR 6097, Faculté des Sciences, Nice, France
| | - Martine Chevanne
- Inserm U1085, Institut de Recherche en Santé, Environnement, Travail, Rennes, France; Université de Rennes 1, SFR Biosit, Rennes, France
| | - Vincent Rioux
- Laboratoire de Biochimie, INRA, Agrocampus Rennes, Rennes, France
| | - Marie-Thérèse Dimanche-Boitrel
- Inserm U1085, Institut de Recherche en Santé, Environnement, Travail, Rennes, France; Université de Rennes 1, SFR Biosit, Rennes, France
| | - Odile Sergent
- Inserm U1085, Institut de Recherche en Santé, Environnement, Travail, Rennes, France; Université de Rennes 1, SFR Biosit, Rennes, France
| | - Dominique Lagadic-Gossmann
- Inserm U1085, Institut de Recherche en Santé, Environnement, Travail, Rennes, France; Université de Rennes 1, SFR Biosit, Rennes, France.
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Sun YV, Smith AK, Conneely KN, Chang Q, Li W, Lazarus A, Smith JA, Almli LM, Binder EB, Klengel T, Cross D, Turner ST, Ressler KJ, Kardia SLR. Epigenomic association analysis identifies smoking-related DNA methylation sites in African Americans. Hum Genet 2013; 132:1027-37. [PMID: 23657504 PMCID: PMC3744600 DOI: 10.1007/s00439-013-1311-6] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2013] [Accepted: 05/01/2013] [Indexed: 12/31/2022]
Abstract
Cigarette smoking is an environmental risk factor for many chronic diseases, and disease risk can often be managed by smoking control. Smoking can induce cellular and molecular changes, including epigenetic modification, but the short- and long-term epigenetic modifications caused by cigarette smoking at the gene level have not been well understood. Recent studies have identified smoking-related DNA methylation (DNAm) sites in Caucasians. To determine whether the same DNAm sites associate with smoking in African Americans, and to identify novel smoking-related DNAm sites, we conducted a methylome-wide association study of cigarette smoking using a discovery sample of 972 African Americans, and a replication sample of 239 African Americans with two array-based methods. Among 15 DNAm sites significantly associated with smoking after correction for multiple testing in our discovery sample, 5 DNAm sites are replicated in an independent cohort, and 14 sites in the replication sample have effects in the same direction as in the discovery sample. The top two smoking-related DNAm sites in F2RL3 (factor II receptor-like 3) and GPR15 (G-protein-coupled receptor 15) observed in African Americans are consistent with previous findings in Caucasians. The associations between the replicated DNAm sites and smoking remain significant after adjusting for genetic background. Despite the distinct genetic background between African Americans and Caucasians, the DNAm from the two ethnic groups shares common associations with cigarette smoking, which suggests a common molecular mechanism of epigenetic modification influenced by environmental exposure.
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Affiliation(s)
- Yan V Sun
- Department of Epidemiology, Rollins School of Public Health, Emory University, 1518 Clifton Road NE #3049, Atlanta, GA, 30322, USA.
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Marques M, Laflamme L, Gaudreau L. Estrogen receptor α can selectively repress dioxin receptor-mediated gene expression by targeting DNA methylation. Nucleic Acids Res 2013; 41:8094-106. [PMID: 23828038 PMCID: PMC3783176 DOI: 10.1093/nar/gkt595] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Revised: 05/16/2013] [Accepted: 06/13/2013] [Indexed: 11/14/2022] Open
Abstract
Selective inhibitory crosstalk has been known to occur within the signaling pathways of the dioxin (AhR) and estrogen (ERα) receptors. More specifically, ERα represses a cytochrome P450-encoding gene (CYP1A1) that converts cellular estradiol into a metabolite that inhibits the cell cycle, while it has no effect on a P450-encoding gene (CYP1B1) that converts estrodiol into a genotoxic product. Here we show that ERα represses CYP1A1 by targeting the Dnmt3B DNA methyltransferase and concomitant DNA methylation of the promoter. We also find that histone H2A.Z can positively contribute to CYP1A1 gene expression, and its presence at that gene is inversely correlated with DNA methylation. Taken together, our results provide a framework for how ERα can repress transcription, and how that impinges on the production of an enzyme that generates genotoxic estradiol metabolites, and potential breast cancer progression. Finally, our results reveal a new mechanism for how H2A.Z can positively influence gene expression, which is by potentially competing with DNA methylation events in breast cancer cells.
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Affiliation(s)
| | | | - Luc Gaudreau
- Département de biologie, Faculté des sciences, Université de Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
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Buro-Auriemma LJ, Salit J, Hackett NR, Walters MS, Strulovici-Barel Y, Staudt MR, Fuller J, Mahmoud M, Stevenson CS, Hilton H, Ho MWY, Crystal RG. Cigarette smoking induces small airway epithelial epigenetic changes with corresponding modulation of gene expression. Hum Mol Genet 2013; 22:4726-38. [PMID: 23842454 DOI: 10.1093/hmg/ddt326] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The small airway epithelium (SAE), the first site of smoking-induced lung pathology, exhibits genome-wide changes in gene expression in response to cigarette smoking. Based on the increasing evidence that the epigenome can respond to external stimuli in a rapid manner, we assessed the SAE of smokers for genome-wide DNA methylation changes compared with nonsmokers, and whether changes in SAE DNA methylation were linked to the transcriptional output of these cells. Using genome-wide methylation analysis of SAE DNA of nonsmokers and smokers, the data identified 204 unique genes differentially methylated in SAE DNA of smokers compared with nonsmokers, with 67% of the regions with differential methylation occurring within 2 kb of the transcriptional start site. Among the genes with differential methylation were those related to metabolism, transcription, signal transduction and transport. For the differentially methylated genes, 35 exhibited a correlation with gene expression, 54% with an inverse correlation of DNA methylation with gene expression and 46% a direct correlation. These observations provide evidence that cigarette smoking alters the DNA methylation patterning of the SAE and that, for some genes, these changes are associated with the smoking-related changes in gene expression.
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Wang H, Mattes WB, Richter P, Mendrick DL. An omics strategy for discovering pulmonary biomarkers potentially relevant to the evaluation of tobacco products. Biomark Med 2013; 6:849-60. [PMID: 23227851 DOI: 10.2217/bmm.12.78] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Smoking is known to cause serious lung diseases including chronic bronchitis, chronic obstructive lung disease, obstruction of small airways, emphysema and cancer. Tobacco smoke is a complex chemical aerosol containing at least 8000 chemical constituents, either tobacco derived or added by tobacco product manufacturers. Identification of all of the toxic agents in tobacco smoke is challenging, and efforts to understand the mechanisms by which tobacco use causes disease will be informed by new biomarkers of exposure and harm. In 2009, President Obama signed into law the Family Smoking Prevention and Tobacco Control Act granting the US FDA the authority to regulate tobacco products to protect public health. This perspective article presents the background, rationale and strategy for using omics technologies to develop new biomarkers, which may be of interest to the FDA when implementing the Family Smoking Prevention and Tobacco Control Act.
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Affiliation(s)
- Honggang Wang
- Food & Drug Administration, National Center for Toxicological Research, 3900 NCTR Road, Jefferson, AR 72079, USA
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Aran D, Sabato S, Hellman A. DNA methylation of distal regulatory sites characterizes dysregulation of cancer genes. Genome Biol 2013; 14:R21. [PMID: 23497655 PMCID: PMC4053839 DOI: 10.1186/gb-2013-14-3-r21] [Citation(s) in RCA: 241] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Accepted: 03/12/2013] [Indexed: 11/24/2022] Open
Abstract
Background Abnormal epigenetic marking is well documented in gene promoters of cancer cells, but the study of distal regulatory siteshas lagged behind.We performed a systematic analysis of DNA methylation sites connected with gene expression profilesacross normal and cancerous human genomes. Results Utilizing methylation and expression data in 58 cell types, we developed a model for methylation-expression relationships in gene promoters and extrapolated it to the genome. We mapped numerous sites at which DNA methylation was associated with expression of distal genes. These sites bind transcription factors in a methylation-dependent manner, and carry the chromatin marks of a particular class of transcriptional enhancers. In contrast to the traditional model of one enhancer site per cell type, we found that single enhancer sites may define gradients of expression levels across many different cell types. Strikingly, the identified sites were drastically altered in cancers: hypomethylated enhancer sites associated with upregulation of cancer-related genes and hypermethylated sites with downregulation. Moreover, the association between enhancer methylation and gene deregulation in cancerwas significantly stronger than the association of promoter methylationwith gene deregulation. Conclusions Methylation of distal regulatory sites is closely related to gene expression levels across the genome. Single enhancers may modulate ranges of cell-specific transcription levels, from constantlyopen promoters. In contrast to the remote relationships between promoter methylation and gene dysregulation in cancer, altered methylation of enhancer sites is closely related to gene expression profiles of transformed cells.
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Tekpli X, Landvik NE, Anmarkud KH, Skaug V, Haugen A, Zienolddiny S. DNA methylation at promoter regions of interleukin 1B, interleukin 6, and interleukin 8 in non-small cell lung cancer. Cancer Immunol Immunother 2013; 62:337-45. [PMID: 22923190 PMCID: PMC11028434 DOI: 10.1007/s00262-012-1340-3] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Accepted: 08/09/2012] [Indexed: 12/30/2022]
Abstract
Epidemiologic and experimental evidences support the concept that inflammation promotes the development and progression of cancers. Interleukins (ILs) regulate the expression of several molecules and signaling pathways involved in inflammation. High expression of some ILs in the tumor microenvironment has been associated with a more virulent tumor phenotype. To examine the role of IL-1β, IL-6, and IL-8 in non-small cell lung cancer, we measured mRNA levels and promoter DNA methylation in a panel of cultured human lung cells (n = 23) and in matched pair lung tumor versus adjacent non-tumorous tissues (n = 24). We found that lung cancer cells or tissues had significantly different DNA methylation and mRNA levels than normal human bronchial epithelial cells or adjacent non-tumorous tissues, respectively. High DNA methylation of ILs promoters in lung cancer cells or tissues was associated with low mRNA levels. We found an inverse correlation between DNA methylation of IL1B, IL6, and IL8 gene promoters and their corresponding mRNA levels, such inverse correlation was more significant for IL1B (i.e., all cancer cell lines used in this study had a hypermethylated IL1B promoter which was associated with silencing of the gene). Our results underline for the first time the role of epigenetic modifications in the regulation of the expression of key cytokines involved in the inflammatory response during lung cancer development.
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Affiliation(s)
- Xavier Tekpli
- Section for Toxicology, Department of Biological and Chemical Working Environment, National Institute of Occupational Health, PO box 8149 Dep., 0033, Oslo, Norway.
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Sundaramoorthy R, Srinivasan V, Gujar J, Sen A, Sekar N, Abilash VG. Clinical, cytogenetic and CYP1A1 exon-1 gene mutation analysis of Beedi workers in Vellore region, Tamil Nadu. Asian Pac J Cancer Prev 2013; 14:7555-60. [PMID: 24460333 DOI: 10.7314/apjcp.2013.14.12.7555] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Beedi rollers are exposed to unburnt tobacco dust through cutaneous and pharyngeal route and it is extremely harmful to the body since it is carcinogenic in nature and can cause cancer during long exposure. This indicates that occupational exposure to tobacco imposes considerable genotoxicity among beedi workers. MATERIALS AND METHODS In the present study, 27 beedi workers and age and sex matched controls were enrolled for clinical, cytogenetics and molecular analysis. Clinical features were recorded. The workers were in the age group of 28-67 years and were workers exposure from 8-60 years. Blood samples were collected from workers and control subjects and lymphocyte cultures were carried out by using standard technique, slides were prepared and 50 metaphases were scored for each sample to find the chromosomal abnormalities. For molecular analysis the genomic DNA was extracted from peripheral blood, to screen the variations in gene, the exon 1 of CYP1A1 gene was amplified by polymerase chain reaction (PCR) and then screened with Single Strand Conformation Polymorphism (SSCP) analysis. RESULTS A statistically significant increase was observed in the frequencies of chromosomal aberrations in exposed groups when compared to the respective controls and variations observed in Exon 1 of CYP1A1(Cytochrome P450, family 1, subfamily A, polypeptide 1) gene. CONCLUSIONS This study shows that, the toxicants present in the beedi that enter into human body causes disturbance to normal state and behavior of the chromosomes which results in reshuffling of hereditary material causing chromosomal aberrations and genomic variations.
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Affiliation(s)
- Rajiv Sundaramoorthy
- Division of Biomolecules and Genetics, School of Biosciences and Technology, VIT University, Tamil Nadu, India E-mail :
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Ivanov M, Kacevska M, Ingelman-Sundberg M. Epigenomics and Interindividual Differences in Drug Response. Clin Pharmacol Ther 2012; 92:727-36. [DOI: 10.1038/clpt.2012.152] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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44
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Tekpli X, Landvik NE, Skaug V, Gulsvik A, Haugen A, Zienolddiny S. Functional effect of polymorphisms in 15q25 locus on CHRNA5 mRNA, bulky DNA adducts andTP53mutations. Int J Cancer 2012; 132:1811-20. [DOI: 10.1002/ijc.27870] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2012] [Accepted: 09/03/2012] [Indexed: 11/08/2022]
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Pogribny IP, Beland FA. DNA methylome alterations in chemical carcinogenesis. Cancer Lett 2012; 334:39-45. [PMID: 23010082 DOI: 10.1016/j.canlet.2012.09.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Revised: 08/28/2012] [Accepted: 09/14/2012] [Indexed: 01/30/2023]
Abstract
Carcinogenesis, a complex multifactorial process of the transformation of normal cells into malignant cells, is characterized by many biologically significant and interdependent alterations triggered by the mutational and/or non-mutational (i.e., epigenetic) events. One of these events, specific to all types of cancer, is alterations in DNA methylation. This review summarizes the current knowledge of the role of DNA methylation changes induced by various genotoxic chemicals (carcinogenic agents that interact with DNA) and non-genotoxic carcinogens (chemicals causing tumor by mechanisms other than directly damaging DNA) in the lung, colorectal, liver, and hematologic carcinogenesis. It also emphasizes the potential role for epigenetic changes to serve as markers for carcinogen exposure and carcinogen risk assessment.
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Affiliation(s)
- Igor P Pogribny
- Division of Biochemical Toxicology, National Center for Toxicological Research, Jefferson, AR 72079, USA.
| | - Frederick A Beland
- Division of Biochemical Toxicology, National Center for Toxicological Research, Jefferson, AR 72079, USA.
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Kacevska M, Ivanov M, Ingelman-Sundberg M. Epigenetic-dependent regulation of drug transport and metabolism: an update. Pharmacogenomics 2012; 13:1373-85. [DOI: 10.2217/pgs.12.119] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The pharmacokinetics of a drug are subject to large interindividual variability, which can result in lack of response or adverse drug reactions. In addition to genetic polymorphisms and drug interactions, key genes involved in the metabolism and transport of drugs are demonstrated to have epigenetic influences that can potentially affect interindividual variability in drug response. Emerging studies have focused on the importance of DNA methylation for ADME gene expression and for drug action and resistance, particularly in cancer. However, the epigenetic and ncRNA-dependent regulation of these genes, as well as the pharmacological consequences, is in need of greater attention. In the current review we provide an update of epigenetic and ncRNA-dependent regulation of ADME genes.
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Affiliation(s)
- Marina Kacevska
- Section of Pharmacogenetics, Department of Physiology & Pharmacology, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Maxim Ivanov
- Section of Pharmacogenetics, Department of Physiology & Pharmacology, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Magnus Ingelman-Sundberg
- Section of Pharmacogenetics, Department of Physiology & Pharmacology, Karolinska Institutet, SE-171 77 Stockholm, Sweden
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Lokk K, Vooder T, Kolde R, Välk K, Võsa U, Roosipuu R, Milani L, Fischer K, Koltsina M, Urgard E, Annilo T, Metspalu A, Tõnisson N. Methylation markers of early-stage non-small cell lung cancer. PLoS One 2012; 7:e39813. [PMID: 22768131 PMCID: PMC3387223 DOI: 10.1371/journal.pone.0039813] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2011] [Accepted: 05/28/2012] [Indexed: 01/01/2023] Open
Abstract
Background Despite of intense research in early cancer detection, there is a lack of biomarkers for the reliable detection of malignant tumors, including non-small cell lung cancer (NSCLC). DNA methylation changes are common and relatively stable in various types of cancers, and may be used as diagnostic or prognostic biomarkers. Methods We performed DNA methylation profiling of samples from 48 patients with stage I NSCLC and 18 matching cancer-free lung samples using microarrays that cover the promoter regions of more than 14,500 genes. We correlated DNA methylation changes with gene expression levels and performed survival analysis. Results We observed hypermethylation of 496 CpGs in 379 genes and hypomethylation of 373 CpGs in 335 genes in NSCLC. Compared to adenocarcinoma samples, squamous cell carcinoma samples had 263 CpGs in 223 hypermethylated genes and 513 CpGs in 436 hypomethylated genes. 378 of 869 (43.5%) CpG sites discriminating the NSCLC and control samples showed an inverse correlation between CpG site methylation and gene expression levels. As a result of a survival analysis, we found 10 CpGs in 10 genes, in which the methylation level differs in different survival groups. Conclusions We have identified a set of genes with altered methylation in NSCLC and found that a minority of them showed an inverse correlation with gene expression levels. We also found a set of genes that associated with the survival of the patients. These newly-identified marker candidates for the molecular screening of NSCLC will need further analysis in order to determine their clinical utility.
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Affiliation(s)
- Kaie Lokk
- Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia
- Department of Genetics, United Laboratories, Tartu University Hospital, Tartu, Estonia
| | - Tõnu Vooder
- Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia
- Lung Clinic, Tartu University Hospital, Tartu, Estonia
| | - Raivo Kolde
- Institute of Computer Science, University of Tartu, Tartu, Estonia
| | - Kristjan Välk
- Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia
| | - Urmo Võsa
- Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia
| | - Retlav Roosipuu
- Department of Pathology, Tartu University Hospital, Tartu, Estonia
| | - Lili Milani
- Estonian Genome Center, University of Tartu, Tartu, Estonia
| | - Krista Fischer
- Estonian Genome Center, University of Tartu, Tartu, Estonia
| | - Marina Koltsina
- Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia
| | - Egon Urgard
- Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia
| | - Tarmo Annilo
- Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia
| | - Andres Metspalu
- Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia
- Estonian Genome Center, University of Tartu, Tartu, Estonia
| | - Neeme Tõnisson
- Institute of Molecular and Cell Biology, University of Tartu, Tartu, Estonia
- Department of Genetics, United Laboratories, Tartu University Hospital, Tartu, Estonia
- * E-mail:
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