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Chen H, Chen H, Hua L, Gao Y, Yao Y, Xu Y, Yang J, Xie L, Luo Y, Huang T, Chen H, Lin X, Dong W. Effects of combined stressors to TCDD and high temperature on HSP/CYPs signaling in the zebrafish embryos/larvae. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2025; 372:126039. [PMID: 40073960 DOI: 10.1016/j.envpol.2025.126039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2024] [Revised: 03/04/2025] [Accepted: 03/09/2025] [Indexed: 03/14/2025]
Abstract
Global warming causes the release of dioxin-like deposits and increases geographical migration, increasing the risk of exposure for humans and animals. In this experiment, we used CYP1A transgenic zebrafish Tg (cyp1a: mCherry) and liver fluorescent transgenic zebrafish Tg (fabp10: Ps Red) as an animal model and exposed to 2,3,7,8-Tetrachlorodibenzo-p-Dioxin (TCDD) at 26 °C and 30 °C, respectively. Morphological changes, histological changes, transcriptome and related genes expression were detected. The results showed that exposure to TCDD at 30 °C increased the mortality rate, pericardial cavity area, and reduced the number of liver cells in zebrafish larvae compared to 26 °C. Transcriptome analysis showed that, TCDD significantly altered Peroxisome Proliferators-Activated Receptors (PPARs) metabolic pathway, adipocytokine, fatty acid degradation and cell death. qRT-PCR also detected a further significant increase in the expression of ahr2, cyp-related genes (cyp1.1, cyp1b1, cyp1c1 and cyp3a65), and PPARs (pparα, pparβ and pparγ) in zebrafish larvae induced by TCDD exposure under 30 °C compared to 26 °C water temperature incubation. Our results showed that the increase of ambient temperature (from 26 °C to 30 °C) causes TCDD induced hepatotoxicity to be more intense. The observed toxic changes were likely related to lipid peroxidation.
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Affiliation(s)
- Hongsong Chen
- College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao, Inner Mongolia, 028000, China; Inner Mongolia Key Laboratory of Toxicant Monitoring and Toxicology, China
| | - Hao Chen
- College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao, Inner Mongolia, 028000, China; Center for Energy Metabolism and Reproduction, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Lian Hua
- College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao, Inner Mongolia, 028000, China; Inner Mongolia Key Laboratory of Toxicant Monitoring and Toxicology, China
| | - Yunqi Gao
- College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao, Inner Mongolia, 028000, China; Inner Mongolia Key Laboratory of Toxicant Monitoring and Toxicology, China
| | - Yuehua Yao
- College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao, Inner Mongolia, 028000, China; Inner Mongolia Key Laboratory of Toxicant Monitoring and Toxicology, China
| | - Yangfan Xu
- College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao, Inner Mongolia, 028000, China; Inner Mongolia Key Laboratory of Toxicant Monitoring and Toxicology, China
| | - Jingfeng Yang
- College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao, Inner Mongolia, 028000, China; Inner Mongolia Key Laboratory of Toxicant Monitoring and Toxicology, China
| | - Lingtian Xie
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
| | - Yongju Luo
- Guangxi Key Laboratory of Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Academy of Fishery Science, Nanning, 530021, China
| | - Ting Huang
- Guangxi Key Laboratory of Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Academy of Fishery Science, Nanning, 530021, China
| | - Hongxing Chen
- SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, South China Normal University, Guangzhou, 510006, China
| | - Xuguang Lin
- College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao, Inner Mongolia, 028000, China; Inner Mongolia Key Laboratory of Toxicant Monitoring and Toxicology, China.
| | - Wu Dong
- College of Animal Science and Technology, Inner Mongolia Minzu University, Tongliao, Inner Mongolia, 028000, China; Inner Mongolia Key Laboratory of Toxicant Monitoring and Toxicology, China.
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Narendra G, Choudhary S, Raju B, Verma H, Silakari O. Role of Genetic Polymorphisms in Drug-Metabolizing Enzyme-Mediated Toxicity and Pharmacokinetic Resistance to Anti-Cancer Agents: A Review on the Pharmacogenomics Aspect. Clin Pharmacokinet 2022; 61:1495-1517. [PMID: 36180817 DOI: 10.1007/s40262-022-01174-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/17/2022] [Indexed: 01/31/2023]
Abstract
The inter-individual differences in cancer susceptibility are somehow correlated with the genetic differences that are caused by the polymorphisms. These genetic variations in drug-metabolizing enzymes/drug-inactivating enzymes may negatively or positively affect the pharmacokinetic profile of chemotherapeutic agents that eventually lead to pharmacokinetic resistance and toxicity against anti-cancer drugs. For instance, the CYP1B1*3 allele is associated with CYP1B1 overexpression and consequent resistance to a variety of taxanes and platins, while 496T>G is associated with lower levels of dihydropyrimidine dehydrogenase, which results in severe toxicities related to 5-fluorouracil. In this context, a pharmacogenomics approach can be applied to ascertain the role of the genetic make-up in a person's response to any drug. This approach collectively utilizes pharmacology and genomics to develop effective and safe medications that are devoid of resistance problems. In addition, recently reported genomics studies revealed the impact of many single nucleotide polymorphisms in tumors. These studies emphasized the importance of single nucleotide polymorphisms in drug-metabolizing enzymes on the effect of anti-tumor drugs. In this review, we discuss the pharmacogenomics aspect of polymorphisms in detail to provide an insight into the genetic manipulations in drug-metabolizing enzymes that are responsible for pharmacokinetic resistance or toxicity against well-known anti-cancer drugs. Special emphasis is placed on different deleterious single nucleotide polymorphisms and their effect on pharmacokinetic resistance. The information provided in this report may be beneficial to researchers, especially those who are working in the field of biotechnology and human genetics, in rationally manipulating the genetic information of patients with cancer who are undergoing chemotherapy to avoid the problem of pharmacokinetic resistance/toxicity associated with drug-metabolizing enzymes.
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Affiliation(s)
- Gera Narendra
- Molecular Modeling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, 147002, Patiala, Punjab, India
| | - Shalki Choudhary
- Molecular Modeling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, 147002, Patiala, Punjab, India
| | - Baddipadige Raju
- Molecular Modeling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, 147002, Patiala, Punjab, India
| | - Himanshu Verma
- Molecular Modeling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, 147002, Patiala, Punjab, India
| | - Om Silakari
- Molecular Modeling Lab (MML), Department of Pharmaceutical Sciences and Drug Research, Punjabi University, 147002, Patiala, Punjab, India.
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Abdul Aziz AA, Md Salleh MS, Yahya MM, Zakaria AD, Ankathil R. Genetic Association of CYP1B1 4326 C>G Polymorphism with Disease-Free Survival in TNBC Patients Undergoing TAC Chemotherapy Regimen. Asian Pac J Cancer Prev 2021; 22:1319-1324. [PMID: 33906328 PMCID: PMC8325143 DOI: 10.31557/apjcp.2021.22.4.1319] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 04/08/2021] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Triple negative breast cancer (TNBC) which is treated with taxane, adriamycin and cyclophosphamide (TAC) chemotherapy regimen show variation in treatment response. CYP1B1 4326 C>G polymorphism has been implicated in contributing to the differences in treatment response in various types of cancers. AIM The objective of the present study was to investigate whether this polymorphism modulate the risk of disease recurrence in TNBC patients undergoing TAC chemotherapy regimen. METHODS Blood samples of 76 immunohistochemistry confirmed TNBC patients were recruited. The genotyping of CYP1B1 4326 C>G polymorphism was carried out using PCR-RFLP technique. The genotype patterns were categorized into homozygous wildtype, heterozygous and homozygous variant. Kaplan-Meier analysis followed by Cox proportional hazard regression model were performed to evaluate the TNBC patients' recurrence risk. RESULTS Out of 76 TNBC patients, 25 (33.0%) showed disease recurrence after one-year evaluation. Kaplan Meier analysis showed that TNBC patients who are carriers of CYP1B1 4326 GG variant genotypes (37.0%) had a significantly lower probability of disease-free rates as compared to TNBC patients who are carriers of CYP1B1 4326 CC/CG genotypes (71.0%). Univariate and multivariate Cox analysis demonstrated that TNBC patients who carried CYP1B1 4326 GG variant genotype had a significantly higher risk of recurrence with HR: 2.50 and HR: 4.18 respectively, even after adjustment as compared to TNBC patients who were carriers of CYP1B1 4326 CC and CG genotypes. CONCLUSION Our results demonstrate the potential use of CYP1B1 4325 GG variant genotype as a candidate biomarker in predicting risk of recurrence in TNBC patients undergoing TAC chemotherapy regimen.
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Affiliation(s)
- Ahmad Aizat Abdul Aziz
- Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia.
| | - Md Salzihan Md Salleh
- Department of Pathology School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia.
| | - Maya Mazuwin Yahya
- Department of Surgery, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia.
| | - Andee Dzulkarnaen Zakaria
- Department of Surgery, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia.
| | - Ravindran Ankathil
- Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, Kelantan, Malaysia.
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Meta-Analysis of Transcriptome Data Detected New Potential Players in Response to Dioxin Exposure in Humans. Int J Mol Sci 2020; 21:ijms21217858. [PMID: 33113971 PMCID: PMC7672605 DOI: 10.3390/ijms21217858] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 10/18/2020] [Accepted: 10/21/2020] [Indexed: 12/26/2022] Open
Abstract
Dioxins are one of the most potent anthropogenic poisons, causing systemic disorders in embryonic development and pathologies in adults. The mechanism of dioxin action requires an aryl hydrocarbon receptor (AhR), but the downstream mechanisms are not yet precisely clear. Here, we performed a meta-analysis of all available transcriptome datasets taken from human cell cultures exposed to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). Differentially expressed genes from different experiments overlapped partially, but there were a number of those genes that were systematically affected by TCDD. Some of them have been linked to toxic dioxin effects, but we also identified other attractive targets. Among the genes that were affected by TCDD, there are functionally related gene groups that suggest an interplay between retinoic acid, AhR, and Wnt signaling pathways. Next, we analyzed the upstream regions of differentially expressed genes and identified potential transcription factor (TF) binding sites overrepresented in the genes responding to TCDD. Intriguingly, the dioxin-responsive element (DRE), the binding site of AhR, was not overrepresented as much as other cis-elements were. Bioinformatics analysis of the AhR binding profile unveils potential cooperation of AhR with E2F2, CTCFL, and ZBT14 TFs in the dioxin response. We discuss the potential implication of these predictions for further dioxin studies.
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5
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Bovard D, Giralt A, Trivedi K, Neau L, Kanellos P, Iskandar A, Kondylis A, Luettich K, Frentzel S, Hoeng J, Peitsch MC. Comparison of the basic morphology and function of 3D lung epithelial cultures derived from several donors. Curr Res Toxicol 2020; 1:56-69. [PMID: 34345837 PMCID: PMC8320645 DOI: 10.1016/j.crtox.2020.08.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 08/25/2020] [Accepted: 08/27/2020] [Indexed: 12/17/2022] Open
Abstract
In vitro models of the human lung play an essential role in evaluating the toxicity of inhaled compounds and understanding the development of respiratory diseases. Three-dimensional (3D) organotypic models derived from lung basal epithelial cells and grown at the air–liquid interface resemble human airway epithelium in multiple aspects, including morphology, cell composition, transcriptional profile, and xenobiotic metabolism. Whether the different characteristics of basal cell donors have an impact on model characteristics and responses remains unknown. In addition, studies are often conducted with 3D cultures from one donor, assuming a representative response on the population level. Whether this assumption is correct requires further investigation. In this study, we compared the morphology and functionality of 3D organotypic bronchial and small airway cultures from different donors at different weeks after air-lift to assess the interdonor variability in these parameters. The thickness, cell type composition, and transepithelial electrical resistance varied among the donors and over time after air-lift. Cilia beating frequency increased in response to isoproterenol treatment in both culture types, independent of the donor. The cultures presented low basal cytochrome P450 (CYP) 1A1/1B1 activity, but 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) treatment induced CYP1A1/1B1 activity regardless of the donor. In conclusion, lung epithelial cultures prepared from different donors present diverse morphology but similar functionality and metabolic activity, with certain variability in their response to stimulation. 3D lung cultures derived from various donors differed mostly at the morphological level. Epithelial thickness, presence of cysts, ciliation, and goblet cell number are donor dependent. Cilia beating frequency varied across donors but the response to isoproterenol was similar. CYP450 activity in response to xenobiotics was preserved across donors.
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Key Words
- ALI, air–liquid interface
- BTUB4, β-tubulin 4
- Bronchial culture
- CBF, cilia beating frequency
- CYP, cytochrome P450
- Donor variability
- Lung toxicology
- MUC5AC, mucin 5AC
- Organotypic
- PBS, phosphate buffered saline
- Small airway culture
- TCDD, 2,3,7,8-tetrachlorodibenzo-p-dioxin
- TEER, transepithelial electrical resistance
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Affiliation(s)
- David Bovard
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | - Albert Giralt
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | - Keyur Trivedi
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | - Laurent Neau
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | - Petros Kanellos
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | - Anita Iskandar
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | - Athanasios Kondylis
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | - Karsta Luettich
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | - Stefan Frentzel
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | - Julia Hoeng
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | - Manuel C Peitsch
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
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6
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Rizzolo P, Silvestri V, Valentini V, Zelli V, Bucalo A, Zanna I, Bianchi S, Tibiletti MG, Russo A, Varesco L, Tedaldi G, Bonanni B, Azzollini J, Manoukian S, Coppa A, Giannini G, Cortesi L, Viel A, Montagna M, Peterlongo P, Radice P, Palli D, Ottini L. Evaluation of CYP17A1 and CYP1B1 polymorphisms in male breast cancer risk. Endocr Connect 2019; 8:1224-1229. [PMID: 31336362 PMCID: PMC6733362 DOI: 10.1530/ec-19-0225] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 07/23/2019] [Indexed: 12/21/2022]
Abstract
Breast cancer in men is a rare and still poorly characterized disease. Inherited mutations in BRCA1, BRCA2 and PALB2 genes, as well as common polymorphisms, play a role in male breast cancer genetic predisposition. Male breast cancer is considered a hormone-dependent tumor specifically related to hyperestrogenism. Polymorphisms in genes involved in estrogen biosynthesis and metabolism pathways, such as CYP17A1 and CYP1B1, have been associated with breast cancer risk. Here, we aimed to investigate the role of CYP17A1 and CYP1B1 polymorphisms in male breast cancer risk. A series of 597 male breast cancer cases and 1022 male controls, recruited within the Italian Multicenter Study on male breast cancer, was genotyped for CYP17A1 rs743572, CYP1B1 rs1056836 and rs1800440 polymorphisms by allelic discrimination real-time PCR with TaqMan probes. Associations with male breast cancer risk were estimated using logistic regression. No statistically significant associations between male breast cancer risk and the three analyzed polymorphisms emerged. Similar results were obtained also when BRCA1/2 mutational status was considered. No significant differences in the distribution of the genotypes according to estrogen receptor status emerged. In conclusion, our study, based on a large series of male breast cancer cases, is likely to exclude a relevant role of CYP17A1 and CYP1B1 polymorphisms in male breast cancer predisposition. Overall, these results add new data to the increasing evidence that polymorphisms in these genes may not be associated with breast cancer risk.
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Affiliation(s)
- Piera Rizzolo
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | | | - Virginia Valentini
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Veronica Zelli
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Agostino Bucalo
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Ines Zanna
- Cancer Risk Factors and Lifestyle Epidemiology Unit, Institute for Cancer Research, Prevention and Clinical Network (ISPRO), Florence, Italy
| | - Simonetta Bianchi
- Division of Pathological Anatomy, Department of Sciences of Health, University of Florence, Florence, Italy
| | - Maria Grazia Tibiletti
- Department of Pathology, ASST Settelaghi and Centro di Ricerca per lo Studio dei Tumori Eredo-Familiari, Università dell’Insubria, Varese, Italy
| | - Antonio Russo
- Section of Medical Oncology, Department of Surgical and Oncological and Oral Sciences, University of Palermo, Palermo, Italy
| | | | - Gianluca Tedaldi
- Biosciences Laboratory, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy
| | - Bernardo Bonanni
- Division of Cancer Prevention and Genetics IEO, European Institute of Oncology IRCCS, Milan, Italy
| | - Jacopo Azzollini
- Unit of Medical Genetics, Department of Medical Oncology and Hematology, Fondazione IRCCS Istituto Nazionale dei Tumori (INT), Milan, Italy
| | - Siranoush Manoukian
- Unit of Medical Genetics, Department of Medical Oncology and Hematology, Fondazione IRCCS Istituto Nazionale dei Tumori (INT), Milan, Italy
| | - Anna Coppa
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Giuseppe Giannini
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Laura Cortesi
- Department of Oncology and Haematology, University of Modena and Reggio Emilia, Modena, Italy
| | - Alessandra Viel
- Unit of Functional Onco-Genomics and Genetics, Centro di Riferimento Oncologico di Aviano (CRO), IRCCS, Aviano, Italy
| | - Marco Montagna
- Immunology and Molecular Oncology Unit, Veneto Institute of Oncology IOV – IRCCS, Padua, Italy
| | - Paolo Peterlongo
- Genome Diagnostics Program, IFOM – The FIRC Institute of Molecular Oncology, Milan, Italy
| | - Paolo Radice
- Unit of Molecular Bases of Genetic Risk and Genetic Testing, Department of Research, Fondazione IRCCS Istituto Nazionale Tumori (INT), Milan, Italy
| | - Domenico Palli
- Cancer Risk Factors and Lifestyle Epidemiology Unit, Institute for Cancer Research, Prevention and Clinical Network (ISPRO), Florence, Italy
| | - Laura Ottini
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
- Correspondence should be addressed to L Ottini:
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7
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Abdul Aziz AA, Md Salleh MS, Mohamad I, Krishna Bhavaraju VM, Mazuwin Yahya M, Zakaria AD, Hua Gan S, Ankathil R. Single-nucleotide polymorphisms and mRNA expression of CYP1B1 influence treatment response in triple negative breast cancer patients undergoing chemotherapy. J Genet 2018; 97:1185-1194. [PMID: 30555068 DOI: 10.1007/s12041-018-1013-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 04/22/2018] [Accepted: 04/25/2018] [Indexed: 10/27/2022]
Abstract
Triple negative breast cancer (TNBC) is typically associated with poor and interindividual variability in treatment response. Cytochrome P450 family 1 subfamily B1 (CYP1B1) is a metabolizing enzyme, involved in the biotransformation of xenobiotics and anticancer drugs. We hypothesized that, single-nucleotide polymorphisms (SNPs), CYP1B1 142 C>G, 4326 C>G and 4360 A>G, and CYP1B1 mRNA expression might be potential biomarkers for prediction of treatment response in TNBC patients. CYP1B1 SNPs genotyping (76 TNBC patients) was performed using allele-specific polymerase chain reaction (PCR) and PCR-restriction fragment length polymorphism methods and mRNA expression of CYP1B1 (41 formalin-fixed paraffin embeddedblocks) was quantified using quantitative reverse transcription PCR. Homozygous variant genotype (GG) and variant allele (G) of CYP1B1 4326C>G polymorphism showed significantly higher risk for development of resistance to chemotherapy with adjusted odds ratio (OR): 6.802 and 3.010, respectively. Whereas, CYP1B1 142 CG heterozygous genotype showed significant association with goodtreatment response with adjusted OR: 0.199. CYP1B1 142C-4326G haplotype was associated with higher risk for chemoresistance with OR: 2.579. Expression analysis revealed that the relative expression of CYP1B1 was downregulated (0.592) in cancerous tissue compared with normal adjacent tissues. When analysed for association with chemotherapy response, CYP1B1 expression was found to be significantly upregulated (3.256) in cancerous tissues of patients who did not respond as opposed to those of patients who showed response to chemotherapy. Our findings suggest that SNPs together with mRNA expression of CYP1B1 may be useful biomarkers to predict chemotherapy response in TNBC patients.
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Affiliation(s)
- Ahmad Aizat Abdul Aziz
- Human Genome Centre, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, 16150 Kubang Kerian, Kelantan, Malaysia.
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8
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Eskenazi B, Warner M, Brambilla P, Signorini S, Ames J, Mocarelli P. The Seveso accident: A look at 40 years of health research and beyond. ENVIRONMENT INTERNATIONAL 2018; 121:71-84. [PMID: 30179766 PMCID: PMC6221983 DOI: 10.1016/j.envint.2018.08.051] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 08/21/2018] [Accepted: 08/23/2018] [Indexed: 05/02/2023]
Abstract
A 1976 chemical factory explosion near Seveso, Italy exposed residents to high levels of 2,3,7,8-tetracholorodibenzo-p-dioxin (TCDD or dioxin). Dioxin is a known human carcinogen and potent endocrine disruptor. It is highly lipophilic and has a long half-life in humans. Much of what we know and can learn about the risks of dioxin exposure on human health arose from the tragic circumstances of Seveso. This review aims to describe the Seveso accident, summarize the results of 40 years of research on the health of the Seveso population since the accident, and discuss next-stage research on the health of Seveso residents, their children, and grandchildren.
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Affiliation(s)
- Brenda Eskenazi
- Center for Environmental Research and Children's Health (CERCH), School of Public Health, University of California at Berkeley, Berkeley, CA, USA.
| | - Marcella Warner
- Center for Environmental Research and Children's Health (CERCH), School of Public Health, University of California at Berkeley, Berkeley, CA, USA
| | - Paolo Brambilla
- Department of Laboratory Medicine, University of Milano-Bicocca, School of Medicine, Hospital of Desio, Desio-Milano, Italy
| | - Stefano Signorini
- Department of Laboratory Medicine, University of Milano-Bicocca, School of Medicine, Hospital of Desio, Desio-Milano, Italy
| | - Jennifer Ames
- Center for Environmental Research and Children's Health (CERCH), School of Public Health, University of California at Berkeley, Berkeley, CA, USA
| | - Paolo Mocarelli
- Department of Laboratory Medicine, University of Milano-Bicocca, School of Medicine, Hospital of Desio, Desio-Milano, Italy
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9
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Gu CY, Qin XJ, Qu YY, Zhu Y, Wan FN, Zhang GM, Sun LJ, Zhu Y, Ye DW. Genetic variants of the CYP1B1 gene as predictors of biochemical recurrence after radical prostatectomy in localized prostate cancer patients. Medicine (Baltimore) 2016; 95:e4066. [PMID: 27399092 PMCID: PMC5058821 DOI: 10.1097/md.0000000000004066] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Clinically localized prostate cancer is curative. Nevertheless many patients suffered from biochemical recurrence (BCR) after radical prostatectomy (RP). Mounting evidence suggest that estrogen and xenobiotic carcinogens play an essential role in progression of prostate cancervia oxidative estrogen metabolism. CYP1B1 is an enzyme involved in the hydroxylation of estrogens, a reaction of key relevance in estrogen metabolism. Given the role of CYP1B1 in the oxidative metabolism of endogenous/exogenous estrogen and compounds, CYP1B1 polymorphisms have the potential to modify its expression and subsequently lead to progression. We hypothesize that genetic variants of the CYP1B1 gene may influence clinical outcome in clinically localized prostate cancer patients. In this cohort study, we genotyped 9 tagging single nucleotide polymorphisms (SNPs) from the CYP1B1 gene in 312 patients treated with RP. For replication, these SNPs were genotyped in an independent cohort of 426 patients. The expression level of CYP1B1 in the adjacent normal prostate tissues was quantified by reverse transcription and real-time polymerase chain reaction. Kaplan-Meier analysis and Cox proportional hazard models were utilized to identify SNPs that correlated with BCR. CYP1B1 rs1056836 was significantly associated with BCR (hazard ratio [HR]: 0.69; 95% confidence interval [CI]: 0.40-0.89, P = 0.002) and relative CYP1B1 mRNA expression. Our findings suggest inherited genetic variation in the CYP1B1 gene may contribute to variable clinical outcomes for patients with clinically localized prostate cancer.
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Affiliation(s)
- Cheng-Yuan Gu
- Department of Urology, Fudan University Shanghai Cancer Center
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai
| | - Xiao-Jian Qin
- Department of Urology, Fudan University Shanghai Cancer Center
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai
| | - Yuan-Yuan Qu
- Department of Urology, Fudan University Shanghai Cancer Center
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai
| | - Yu Zhu
- Department of Urology, Fudan University Shanghai Cancer Center
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai
| | - Fang-Ning Wan
- Department of Urology, Fudan University Shanghai Cancer Center
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai
| | - Gui-Ming Zhang
- Department of Urology, the Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China
| | - Li-Jiang Sun
- Department of Urology, the Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China
| | - Yao Zhu
- Department of Urology, Fudan University Shanghai Cancer Center
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai
- Correspondence: Yao Zhu and Ding-Wei Ye, Department of Urology, Fudan University Shanghai Cancer Center, No. 270 Dong’an Road, Shanghai 200032, People's Republic of China (e-mail: and )
| | - Ding-Wei Ye
- Department of Urology, Fudan University Shanghai Cancer Center
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai
- Correspondence: Yao Zhu and Ding-Wei Ye, Department of Urology, Fudan University Shanghai Cancer Center, No. 270 Dong’an Road, Shanghai 200032, People's Republic of China (e-mail: and )
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Kalaiselvan I, Senthamarai M, Kasi PD. 2,3,7,8-TCDD-mediated toxicity in peripheral blood mononuclear cells is alleviated by the antioxidants present in Gelidiella acerosa: an in vitro study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:5111-5121. [PMID: 25388558 DOI: 10.1007/s11356-014-3799-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 10/29/2014] [Indexed: 06/04/2023]
Abstract
Seaweeds have been used as a source of traditional medicine worldwide for the treatment of various ailments, mainly due to their ability to quench the free radicals. The present study aims at evaluating the protective effect of methanolic extract of Gelidiella acerosa, an edible red seaweed against 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD)-induced toxicity in peripheral blood mononuclear cells (PBMC). For evaluating the protective effect of G. acerosa, PBMC were divided into four groups: vehicle control, TCDD (10 nM), TCDD + G. acerosa (300 μg/ml), and G. acerosa alone treated. Scavenging of intracellular reactive oxygen species (ROS) induced by TCDD was assessed by the dichloro-dihydro-fluorescein diacetate (DCFH-DA) method. Alterations at macromolecular level were quantified through lipid peroxidation (LPO) level, protein carbonyl content (PCC) level, and comet assay. The cellular morphology upon TCDD toxicity and G. acerosa treatment was obtained by light microscopy and histopathological studies. The chemical composition present in the methanolic extract of G. acerosa was determined by gas chromatography-mass spectrometry (GC-MS) analysis. The results reveal that 10 nM TCDD caused significant (P < 0.05) reduction in cell viability (94.10 ± 0.99), and treatment with 300 μg/ml extract increased the cell viability (99.24 ± 0.69). TCDD treatment resulted in a significant increase in the production of ROS, LPO (114 ± 0.09), and PCC (15.13 ± 1.53) compared to the control, whereas co-treatment with G. acerosa significantly (P < 0.05) mitigated the effects. Further, G. acerosa significantly (P < 0.05) prevented TCDD-induced genotoxicity and cell damage. GC-MS analysis showed the presence of n-hexadecanoic acid (retention time (RT) 13.15), cholesterol (RT 28.80), α-D-glucopyranose, 4-O-α-D-galactopyranosyl (RT 20.01), and azulene (RT 4.20). The findings suggest that G. acerosa has a strong protective ability against TCDD-induced cytotoxicity, oxidative stress, and DNA damage.
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Affiliation(s)
- Ilavarasi Kalaiselvan
- Department of Biotechnology, Alagappa University, Karaikudi, Tamil Nadu, 630 003, India
| | | | - Pandima Devi Kasi
- Department of Biotechnology, Alagappa University, Karaikudi, Tamil Nadu, 630 003, India.
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Dumont A, Pannier D, Ducoulombier A, Tresch E, Chen J, Kramar A, Révillion F, Peyrat JP, Bonneterre J. ERCC1 and CYP1B1 polymorphisms as predictors of response to neoadjuvant chemotherapy in estrogen positive breast tumors. SPRINGERPLUS 2015; 4:327. [PMID: 26180747 PMCID: PMC4493257 DOI: 10.1186/s40064-015-1053-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 05/21/2015] [Indexed: 11/16/2022]
Abstract
Purpose Neoadjuvant chemotherapy (NCT) using anthracyclines and taxanes is a standard treatment for locally advanced breast cancer. Efficacy of NCT is however variable among patients and predictive markers are expected to guide the selection of patients who will benefit from NCT. A promising approach stand with polymorphisms located in genes encoding drug transporters, drug metabolizing enzymes and target genes which can affect drug efficacy. Our study investigated the potential of 37 polymorphisms to predict response to NCT in breast cancer. Methods 118 women with breast adenocarcinoma were treated with FEC100 and taxotere. Genotyping was performed on germline DNA using the BioMark platform (Fluidigm). Pathological complete response (pCR) according to Sataloff criteria was correlated to clinical characteristics and genotypes using univariate and multivariate analyses. Results 25 patients (21.2%) reached complete pathologic response. pCR rate is increased in SBRIII (p = 0.009), ER negative (p = 0.005) and triple negative (p = 0.006) tumors. pCR rate is significantly increased for patients carrying at least one variant allele for BRCA1, ERCC1 or SLCO1B3, and for patients homozygous for CYP1B1. The combination of ERCC1 and CYP1B1 polymorphisms is a potential predictor of NCT response in breast cancer (pCR rate reached 50 vs 21.2% for unselected patients), and particularly in ER + breast cancer subtype where pCR rate reached 41.2 vs 13.5% for unselected patients. Conclusions This study is the first to report ERCC1, BRCA1 and SLCO1B3 as markers of response to NCT in breast cancer. ERCC1/CYP1B1 combination might be of particular interest to predict response to NCT in breast cancer and particularly to help NCT indication for ER+ breast tumors. Electronic supplementary material The online version of this article (doi:10.1186/s40064-015-1053-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Aurélie Dumont
- Laboratoire d'Oncologie Moléculaire Humaine, Centre Oscar Lambret, 3 rue Frédéric Combemale, BP 307, 59020 Lille Cedex, France
| | - Diane Pannier
- Département de Sénologie, Centre Oscar Lambret, 3 rue Frédéric Combemale, BP 307, 59020 Lille Cedex, France
| | - Agnès Ducoulombier
- Département de Sénologie, Centre Oscar Lambret, 3 rue Frédéric Combemale, BP 307, 59020 Lille Cedex, France
| | - Emmanuelle Tresch
- Unité de Méthodologie et Biostatistique, Centre Oscar Lambret, 3 rue Frédéric Combemale, BP 307, 59020 Lille Cedex, France
| | - Jinying Chen
- Laboratoire d'Oncologie Moléculaire Humaine, Centre Oscar Lambret, 3 rue Frédéric Combemale, BP 307, 59020 Lille Cedex, France
| | - Andrew Kramar
- Unité de Méthodologie et Biostatistique, Centre Oscar Lambret, 3 rue Frédéric Combemale, BP 307, 59020 Lille Cedex, France
| | - Françoise Révillion
- Laboratoire d'Oncologie Moléculaire Humaine, Centre Oscar Lambret, 3 rue Frédéric Combemale, BP 307, 59020 Lille Cedex, France
| | - Jean-Philippe Peyrat
- Laboratoire d'Oncologie Moléculaire Humaine, Centre Oscar Lambret, 3 rue Frédéric Combemale, BP 307, 59020 Lille Cedex, France
| | - Jacques Bonneterre
- Département de Sénologie, Centre Oscar Lambret, 3 rue Frédéric Combemale, BP 307, 59020 Lille Cedex, France
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Vasile E, Tibaldi C, Leon GL, D'Incecco A, Giovannetti E. Cytochrome P450 1B1 (CYP1B1) polymorphisms are associated with clinical outcome of docetaxel in non-small cell lung cancer (NSCLC) patients. J Cancer Res Clin Oncol 2015; 141:1189-1194. [PMID: 25504507 DOI: 10.1007/s00432-014-1880-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Accepted: 11/18/2014] [Indexed: 11/28/2022]
Abstract
PURPOSE Cytochrome P450 1B1 (CYP1B1) is involved in the metabolism of anticancer agents; its overexpression was associated with resistance to docetaxel, a commonly used drug for second-line treatment of NSCLC. Several functional single nucleotide polymorphisms (SNPs) have been associated with CYP1B1 expression and activity. The objective of this study was to retrospectively evaluate the correlation of CYP1B1 SNPs with the outcome of NSCLC patients treated with docetaxel in second or third line. METHODS Associations between CYP1B1 4326C>G and 4390A>G polymorphisms with response, progression-free survival (PFS) and overall survival (OS) were estimated using Pearson χ(2) test, Kaplan-Meier curves and log-rank test; a multivariate analysis was performed using Cox proportional hazards modeling. RESULTS A total of 65 advanced NSCLC patients were enrolled into the analysis. Median age was 66 years (range 46-81). Forty-nine patients were male; only five were never smokers. Performance status (PS) was 0 in 25 patients, 1 in 28 and 2 in 12. Histology was adenocarcinoma in 28 patients, squamous carcinoma in 22, other NSCLC in the remaining 15. At univariate analysis, stage and CYP1B1 4326C>G SNPs are associated with PFS, while PS and CYP1B1 4326C>G SNPs correlated with OS. In particular, patients with CYP1B1 4326-GG genotype had shorter PFS and OS than patients with other genotypes (PFS 1.80 vs. 2.70 months, p = 0.12; OS 3.63 vs. 9.83 months, p = 0.039). CYP1B1 4326C>G SNPs were also associated with response rate. Multivariate analysis confirmed the independent prognostic/predictive role of CYP1B1 4326C>G SNPs on OS (p = 0.042) with only a trend for PFS (p = 0.083). CONCLUSIONS CYP1B1 4326C>G polymorphism emerged as possible prognostic/predictive marker of activity and efficacy of docetaxel in NSCLC patients.
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Affiliation(s)
- Enrico Vasile
- Division of Medical Oncology 2, Department of Oncology, Azienda Ospedaliero-Universitaria Pisana, Via Roma 67, 56126, Pisa, Italy,
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Lopes BA, Emerenciano M, Gonçalves BAA, Vieira TM, Rossini A, Pombo-de-Oliveira MS. Polymorphisms in CYP1B1, CYP3A5, GSTT1, and SULT1A1 Are Associated with Early Age Acute Leukemia. PLoS One 2015; 10:e0127308. [PMID: 25992585 PMCID: PMC4436276 DOI: 10.1371/journal.pone.0127308] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 04/14/2015] [Indexed: 01/01/2023] Open
Abstract
Based on observational studies, early age leukemia (EAL) was associated with maternal hormone exposure during pregnancy. We studied the association between genetic polymorphisms of estrogen metabolism and EAL. Using data from the Brazilian Collaborative Study Group of Infant Acute Leukemia (2000–2012), 350 cases and 404 age-matched controls and 134 mothers of cases and controls were genotyped to explore polymorphisms in genes of the estrogen metabolism pathway: CYP1B1 (c.1294C>G, rs1056836), CYP3A4 (c.-392A>G, rs2740574), CYP3A5 (c.219-237G>A, rs776746), GSTM1/GSTT1 deletions, and SULT1A1 (c.638G>A, rs9282861; and c.667A>G, rs1801030). Logistic regression was used to calculate the odds ratios (OR) with 95% confidence intervals (CIs), and unconditional logistic regression was used to estimate adjusted odds ratios (aORs) by ethnicity. Because of multiple testing, p values < 0.01 were significant after Bonferroni correction. SULT1A1 (c.638G>A) was associated to infant acute lymphoblastic leukemia and acute myeloid leukemia (AML) risk in males (additive model: aOR = 0.52; 95% CI: 0.29–0.95, p = 0.03; dominant model: aOR = 2.18; 95% CI: 1.17–4.05, p = 0.01, respectively). CYP1B1 polymorphism was associated with a decreased risk of AML either for non-white or female children (additive model: OR = 0.24; 95% CI: 0.08–0.76, p < 0.01; additive model: aOR = 0.27; 95% CI: 0.08–0.89, p = 0.03, respectively). Since polymorphisms of Cytochrome P450 genes presented gender-specific risk associations, we also investigated their expression. CYP1B1 was not expressed in 57.1% of EAL cases, and its expression varied by genotype, gender, and leukemia subtype. Maternal-fetal GSTT1 null genotype was associated with risk of EAL. This study shows that polymorphisms in genes of estrogen metabolism confer genetic susceptibility to EAL, mainly in males, and maternal susceptibility genes modify the risk for developing EAL in newborns.
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Affiliation(s)
- Bruno Almeida Lopes
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, RJ, Brazil
| | - Mariana Emerenciano
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, RJ, Brazil
| | - Bruno Alves Aguiar Gonçalves
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, RJ, Brazil
| | - Tállita Meciany Vieira
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, RJ, Brazil
| | - Ana Rossini
- Department of Biochemistry, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Maria S. Pombo-de-Oliveira
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, RJ, Brazil
- * E-mail:
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Blackburn HL, Ellsworth DL, Shriver CD, Ellsworth RE. Role of cytochrome P450 genes in breast cancer etiology and treatment: effects on estrogen biosynthesis, metabolism, and response to endocrine therapy. Cancer Causes Control 2015; 26:319-32. [PMID: 25554091 DOI: 10.1007/s10552-014-0519-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 12/19/2014] [Indexed: 10/24/2022]
Abstract
PURPOSE The cytochrome P450 (CYP) genes are oxygenases involved in estrogen biosynthesis and metabolism, generation of DNA damaging procarcinogens, and response to anti-estrogen therapies. Since lifetime estrogen exposure is an established risk factor for breast cancer, determining the role of CYP genes in breast cancer etiology may provide critical information for understanding tumorigenesis and response to treatment. METHODS This review summarizes literature available in PubMed published between 1993 and 2013 that focuses on studies evaluating the effects of DNA variants in CYP genes on estrogen synthesis, metabolism, and generation of procarcinogens in addition to response to anti-estrogen therapies. RESULTS Evaluation of DNA variants in estrogen metabolism genes was largely inconclusive. Meta-analyses of data from CYP19A1 support an association between the number of (TTTA) n repeats in intron 4 and breast cancer risk, but the biological mechanism for this relationship is unknown. Associations between single nucleotide polymorphism in CYP1B1 and DNA damage caused by procarcinogenic estrogen metabolites were ambiguous. Variants in CYP2D6 are associated with altered metabolism tamoxifen; however, current data do not support widespread clinical testing. The effect of variants in CYP19A1 in response to aromatase inhibitors is also questionable. CONCLUSION Evaluation of DNA variants in CYP genes involved with estrogen metabolism or treatment response has been inconclusive, reflecting small samples sizes, tumor heterogeneity, and differences between populations. Better-powered studies that account for genetic backgrounds and tumor phenotypes are thus necessary.
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Helmig S, Wenzel S, Maxeiner H, Schneider J. CYP1B1 mRNA inducibility due to benzo(a)pyrene is modified by the CYP1B1 L432V gene polymorphism. Mutagenesis 2014; 29:237-40. [PMID: 24695682 DOI: 10.1093/mutage/geu010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Benzo(a)pyrene (BaP), a primary component of tobacco smoke, is activated by cytochrome P450 1B1 (CYP1B1). Smokers homozygous for the C-allele (*1/*1) at the CYP1B1 Leu432Val polymorphism have shown increased CYP1B1 expression, compared to smokers homozygous for the G-allele *3/*3. Since no difference has been shown in CYP1B1 expression between both genotypes in non-smokers, we assumed that the genetic impact is produced in combination with an exogenous induction (e.g. BaP). To confirm this theory and to quantify the effect, we induced human leucocytes with increasing BaP concentrations and determined CYP1B1 mRNA expression with real-time polymerase chain reaction (PCR). We incubated human leucocytes from 27 healthy donors with BaP concentrations ranging from 2.5 to 250 µM. We identified the CYP1B1 genotypes by melting curve analysis and assessed relative CYP1B1 mRNA expression using real-time PCR. Expression was related to β-2-microglobulin with the 2(-ΔΔCT) method. Inducibility of CYP1B1 mRNA by BaP was higher in leucocytes carrying the CYP1B1*1/*1 genotype than in leucocytes carrying the CYP1B1*3/*3 genotype (P = 0.012). We revealed significant differences, with BaP concentrations of 2.5 µM (P = 0.0094), 5 µM (P = 0.027), 10 µM (P = 0.0006), 25 µM (P = 0.0007) and 50 µM (P = 0.017). Homozygous carriers of the C-allele (*1/*1) at the CYP1B1 Leu432Val polymorphism show a higher response to environmental factors, such as carcinogenic BaP, than homozygous carriers of the G-allele *3/*3.
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Affiliation(s)
- Simone Helmig
- Institute and Outpatient Clinic for Occupational and Social Medicine and Department of Anesthesiology, Intensive Care and Pain Medicine, Justus-Liebig University, Gießen, D-35392 Giessen, Germany
| | - Sibylle Wenzel
- Institute and Outpatient Clinic for Occupational and Social Medicine and Department of Anesthesiology, Intensive Care and Pain Medicine, Justus-Liebig University, Gießen, D-35392 Giessen, Germany
| | - Hagen Maxeiner
- Department of Anesthesiology, Intensive Care and Pain Medicine, Justus-Liebig University, Gießen, D-35392 Giessen, Germany
| | - Joachim Schneider
- Institute and Outpatient Clinic for Occupational and Social Medicine and Department of Anesthesiology, Intensive Care and Pain Medicine, Justus-Liebig University, Gießen, D-35392 Giessen, Germany
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Chahin A, Peiffer J, Olry JC, Crepeaux G, Schroeder H, Rychen G, Guiavarc’h Y. EROD activity induction in peripheral blood lymphocytes, liver and brain tissues of rats orally exposed to polycyclic aromatic hydrocarbons. Food Chem Toxicol 2013; 56:371-80. [DOI: 10.1016/j.fct.2013.02.043] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 02/17/2013] [Accepted: 02/18/2013] [Indexed: 11/17/2022]
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Girolami F, Spalenza V, Carletti M, Sacchi P, Rasero R, Nebbia C. Modulation of aryl hydrocarbon receptor target genes in circulating lymphocytes from dairy cows bred in a dioxin-like PCB contaminated area. THE SCIENCE OF THE TOTAL ENVIRONMENT 2013; 450-451:7-12. [PMID: 23454571 DOI: 10.1016/j.scitotenv.2013.01.095] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Revised: 01/28/2013] [Accepted: 01/28/2013] [Indexed: 06/01/2023]
Abstract
Animal productions (i.e. fish, eggs, milk and dairy products) represent the major source of exposure to dioxins, furans, and dioxin-like (DL) polychlorobiphenyls for humans. The negative effects of these highly toxic and persistent pollutants are mediated by the activation of the aryl hydrocarbon receptor (AHR) that elicits the transcriptional induction of several genes, including those involved in xenobiotic metabolism. Previously we demonstrated the presence and functioning of the AHR signaling pathway in primary cultures of bovine blood lymphocytes. The aim of the present study was to investigate by real time PCR the expression and the inducibility of selected target genes (i.e. AHR, AHR nuclear translocator (ARNT), AHR repressor, CYP1A1 and CYP1B1) in uncultured cells from dairy cows naturally exposed to DL-compounds. The study was carried out on two groups of animals bred in a highly polluted area and characterized by a different degree of contamination, as assessed by bulk milk TEQ values, and a control group reared in an industry free area. Bovine lymphocytes expressed only AHR, ARNT and CYP1B1 genes to a detectable level; moreover, only CYP1B1 expression appeared to be correlated to TEQ values, being higher in the most contaminated group, and decreasing along with animal decontamination. Finally, lymphocytes from exposed cows displayed a lower inducibility of both CYP1A1 and CYP1B1 after the in vitro treatment with a specific AHR ligand. In conclusion, our results indicate that DL-compound contaminated cows may display significant changes in AHR-target gene expression of circulating lymphocytes.
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Affiliation(s)
- Flavia Girolami
- Department of Animal Pathology, University of Turin, Via Leonardo da Vinci 44, 10095 Grugliasco, Italy.
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Fu Z, Shrubsole MJ, Li G, Smalley WE, Hein DW, Cai Q, Ness RM, Zheng W. Interaction of cigarette smoking and carcinogen-metabolizing polymorphisms in the risk of colorectal polyps. Carcinogenesis 2013; 34:779-86. [PMID: 23299405 PMCID: PMC3616674 DOI: 10.1093/carcin/bgs410] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Revised: 11/28/2012] [Accepted: 12/18/2012] [Indexed: 12/20/2022] Open
Abstract
The causal role of cigarette smoking in the risk of colorectal neoplasm has been suggested but not established. In a case-control study including 2060 colorectal polyp patients and 3336 polyp-free controls, we evaluated 21 functional genetic variants to construct a tobacco-carcinogen-metabolizing genetic risk score. Data regarding cigarette smoking were obtained through telephone interviews. Cigarette smoking was associated with an elevated risk of both adenomas and hyperplastic polyps. The association with smoking was stronger in participants with a high carcinogen-metabolizing risk score than those with a low risk score. Smoking 30 or more cigarettes per day was associated with a 1.7-fold elevated risk of any polyps (95% confidence interval = 1.3-2.2) among those with a low genetic risk score and 2.9-fold elevated risk (95% confidence interval = 1.8-4.8) among those with a high genetic risk score (P interaction = 0.025). A similar pattern of interaction was observed in analyses conducted separately for those with adenomas only (P interaction = 0.039) and hyperplastic polyps only (P interaction = 0.024). Interaction between carcinogen-metabolizing genetic risk and cigarette smoking was found in relation to high-risk adenomas (P interaction = 0.010) but not low-risk adenomas (P interaction = 0.791). No apparent interaction was found for duration of smoking. This study shows that the association between cigarette smoking and colorectal polyp risk is modified by tobacco-carcinogen-metabolizing polymorphisms, providing support for a causal role of cigarette smoking in the etiology of colorectal tumors.
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Affiliation(s)
- Zhenming Fu
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Martha J. Shrubsole
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt University School of Medicine, Nashville, TN, USA
- Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Guoliang Li
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Walter E. Smalley
- VA Tennessee Valley Geriatric Research, Education and Clinical Center, Nashville, TN, USA
- Division of Gastroenterology, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, USA and
| | - David W. Hein
- Department of Pharmacology & Toxicology, James Graham Brown Cancer Center, University of Louisville School of Medicine, Louisville, KY, USA
| | - Qiuyin Cai
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Reid M. Ness
- VA Tennessee Valley Geriatric Research, Education and Clinical Center, Nashville, TN, USA
- Division of Gastroenterology, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, USA and
| | - Wei Zheng
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt University School of Medicine, Nashville, TN, USA
- Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
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Fu Z, Shrubsole MJ, Li G, Smalley WE, Hein DW, Chen Z, Shyr Y, Cai Q, Ness RM, Zheng W. Using gene-environment interaction analyses to clarify the role of well-done meat and heterocyclic amine exposure in the etiology of colorectal polyps. Am J Clin Nutr 2012; 96:1119-28. [PMID: 23015320 PMCID: PMC3471199 DOI: 10.3945/ajcn.112.040345] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND The role of well-done meat intake and meat-derived mutagen heterocyclic amine (HCA) exposure in the risk of colorectal neoplasm has been suggested but not yet established. OBJECTIVE With the use of gene-environment interaction analyses, we sought to clarify the association of HCA exposure with colorectal polyp risk. DESIGN In a case-control study including 2057 colorectal polyp patients and 3329 controls, we evaluated 16 functional genetic variants to construct an HCA-metabolizing score. To derive dietary HCA-exposure amount, data were collected regarding dietary intake of meat by cooking method and degree of doneness. RESULTS A 2-fold elevated risk associated with high red meat intake was found for colorectal polyps or adenomas in subjects with a high HCA-metabolizing risk score, whereas the risk was 1.3- to 1.4-fold among those with a low risk score (P-interaction ≤ 0.05). The interaction was stronger for the risk of advanced or multiple adenomas, in which an OR of 2.8 (95% CI: 1.8, 4.6) was observed for those with both a high HCA-risk score and high red meat intake (P-interaction = 0.01). No statistically significant interaction was found in analyses that used specific HCA exposure derived from dietary data. CONCLUSION High red meat intake is associated with an elevated risk of colorectal polyps, and this association may be synergistically modified by genetic factors involved in HCA metabolism.
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Affiliation(s)
- Zhenming Fu
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt University School of Medicine, Nashville, TN 37203, USA
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CYP1B1 and hormone-induced cancer. Cancer Lett 2012; 324:13-30. [DOI: 10.1016/j.canlet.2012.04.021] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2012] [Revised: 04/21/2012] [Accepted: 04/24/2012] [Indexed: 12/11/2022]
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González-Neira A. Pharmacogenetics of chemotherapy efficacy in breast cancer. Pharmacogenomics 2012; 13:677-90. [PMID: 22515610 DOI: 10.2217/pgs.12.44] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Large differences are observed in chemotherapy response between breast cancer patients, with a substantial part of this variability being explained by genetic factors. Polymorphisms in genes encoding drug-metabolizing enzymes, drug transporters and drug targets influence the pharmacokinetics and pharmacodynamics of these anticancer drugs, leading to differences in therapeutic efficacy. Pharmacogenetic investigations of breast cancer therapeutics focused on these candidate loci have been performed. This article summarizes the status of research to identify polymorphisms in genes that influence response to the chemotherapeutic agents used in breast cancer treatment and suggests future directions for this line of research. Understanding the genetic factors that predispose patients to poor treatment outcomes will help guide individualized therapeutic strategies to obtain maximal benefit.
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Affiliation(s)
- Anna González-Neira
- Human Genotyping Unit, Human Cancer Genetics Programme, Spanish National Cancer Research Centre, Madrid, Spain.
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Rysavy NM, Maaetoft-Udsen K, Turner H. Dioxins: diagnostic and prognostic challenges arising from complex mechanisms. J Appl Toxicol 2012; 33:1-8. [PMID: 22610997 DOI: 10.1002/jat.2759] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Revised: 02/27/2012] [Accepted: 02/28/2012] [Indexed: 12/23/2022]
Abstract
Dioxins are ubiquitous environmental challenges to humans, with a pervasiveness that arises from 200 years of rapid industrialization and mechanization of Western societies and which is now extending into the developing world. In spite of their penetrance of the human biota, these compounds are poorly understood in terms of their true physiological potential for harm, and the mechanisms by which they impact cellular and organ level function are only recently becoming clear. Emerging awareness that chronic exposures to toxins may have generational and subtle effects on the outcomes of diseases such as cancer and diabetes, which are already multifactorial and highly complex, creates the context for the current review paper. Here, we summarize dioxin exposure paradigms and the resulting physiological effects that have been documented in animals and humans. Novel insights into potential endogenous end exogenous ligands, as well as the mechanisms by which these ligands impact acute and chronic cellular processes, are discussed. We develop the idea that the diagnosis of dioxin exposure, the subtleties of the cellular effects of the compounds and prognosis of the long-term effects of exposure are problems requiring that researchers leverage the power of genomics and epigenetics. However, the continuation of longitudinal epidemiological studies and the development of a firmer basis from which to extrapolate animal studies will be critical in ensuring optimal insight from these resource-intensive techniques.
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Affiliation(s)
- Noel M Rysavy
- Laboratory of Immunology and Signal Transduction, Chaminade University, Honolulu, HI 96822, USA
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Chen X, Ma SW, Ma XM, Xu YJ, Tang NJ. Changes in fibrinopeptide A peptides in the sera of rats chronically exposed to low doses of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2012; 33:191-196. [PMID: 22227163 DOI: 10.1016/j.etap.2011.12.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2011] [Revised: 12/12/2011] [Accepted: 12/13/2011] [Indexed: 05/31/2023]
Abstract
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) is a ubiquitously distributed endocrine disruptors. To investigate peptide changes in the sera of rats chronically exposed to TCDD and to explore the association of these changes with liver morphology, TCDD was administrated to male rats at doses of 140, 350, and 875 ng/kg/week for 29 weeks. Serum was collected and proteomic analysis was performed using automated Bruker Daltonics ClinProt with matrix-assisted laser desorption/ionization time-of-flight mass spectrometer. One peptide at 1740.89 was found to be significantly decreased and further identified with nano LC-MS/MS system. The MS BLAST homology search engine reported the peptide to be a partial sequence of fibrinopeptide A. Liver fatty degeneration and necrosis were assessed by hematoxylin and eosin staining. Liver fatty degeneration and necrosis were both found to be significantly increased after TCDD exposure. Levels of fibrinopeptide A were significantly correlated with liver fatty degeneration and necrosis.
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Affiliation(s)
- Xi Chen
- Department of Occupational Health, School of Public Health, Tianjin Medical University, Qixiangtai Road No. 22, Heping District, Tianjin 300070, China
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Association of the CYP1B1 Leu432Val polymorphism with the risk of prostate cancer: a meta-analysis. Mol Biol Rep 2012; 39:7465-71. [DOI: 10.1007/s11033-012-1579-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2011] [Accepted: 01/30/2012] [Indexed: 11/27/2022]
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CYP1B1 Leu432Val polymorphism and colorectal cancer risk among Caucasians: a meta-analysis. Tumour Biol 2011; 33:809-16. [PMID: 22190224 DOI: 10.1007/s13277-011-0298-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2011] [Accepted: 12/08/2011] [Indexed: 10/14/2022] Open
Abstract
Studies investigating the association between cytochrome P450 1B1 (CYP1B1) Leu432Val (432 C/G, rs1056836) polymorphism and colorectal cancer (CRC) risk report conflicting results. The aim of this study was to quantitatively summarize the evidence for such a relationship. Two investigators independently searched the Medline, Embase, China National Knowledge Infrastructure, and Chinese Biomedicine Databases. Summary odds ratios (ORs) and 95% confidence intervals (95% CIs) for CYP1B1 polymorphism and CRC were calculated in a fixed-effects model and a random-effects model when appropriate. The pooled ORs were performed for co-dominant model (GG vs. CC, GC vs. CC), dominant model (GG + GC vs. CC), and recessive model (GG vs. GC + CC). This meta-analysis included ten case-control studies, which included 8,466 CRC cases and 9,301 controls. Overall, the variant genotypes (GG and GC) of the 432 C/G were not associated with CRC risk when compared with the wild-type CC homozygote (GG vs. CC, OR = 1.01, 95% CI = 0.93-1.10; GC vs. CC, OR = 0.97, 95% CI = 0.90-1.04), without any between-study heterogeneity. Similarly, no associations were found in the dominant and recessive models (dominant model, OR = 0.98, 95% CI = 0.92-1.05; recessive model, OR = 1.03, 95% CI = 0.96-1.11). Limiting the analysis to the studies within Hardy-Weinberg equilibrium, the results were persistent and robust. When stratifying for country, matched control and source of controls, no evidence of significant association was observed in any subgroup. No publication bias was found in the present study. No association is found between the CYP1B1 Leu432Val polymorphism and risk of CRC among Caucasians.
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Gene expression and inducibility of the aryl hydrocarbon receptor-dependent pathway in cultured bovine blood lymphocytes. Toxicol Lett 2011; 206:204-9. [PMID: 21803134 DOI: 10.1016/j.toxlet.2011.07.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2011] [Revised: 07/12/2011] [Accepted: 07/14/2011] [Indexed: 11/22/2022]
Abstract
The exposure to dioxin-like (DL) compounds, an important class of persistent environmental pollutants, results in the altered expression of target genes. This occurs through the binding to the aryl hydrocarbon receptor (AhR), the subsequent dimerization with the AhR nuclear translocator (ARNT), and the binding of the complex to DNA responsive elements. A number of genes are up-regulated, including, among others, the AhR repressor (AHRR) and several biotransformation enzymes, such as the members of CYP1 family and NAD(P)H-quinone oxidoreductase (NOQ1). The expression and the inducibility of the above genes were investigated in mitogen-stimulated cultured blood lymphocytes from cattle, which represent a notable source of DL-compound human exposure through dairy products and meat. As assessed by real-time PCR, all the examined genes except CYP1A2 and NQO1 were detected under basal conditions. Cell exposure to the DL-compounds PCB126 or PCB77 in the 10(-6)-10(-9)M concentration range resulted in a 2-4-fold induction of CYPIA1 and CYP1B1, which was antagonized by α-naphthoflavone or PCB153. This study demonstrates for the first time the presence and inducibility of the AhR pathway in easily accessible cells like bovine peripheral lymphocytes and prompts further investigations to verify whether similar changes could occur under in vivo conditions.
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UNO Y, MATSUSHITA A, YAMAZAKI H. CYP1B1 is Polymorphic in Cynomolgus and Rhesus Macaques. J Vet Med Sci 2011; 73:1229-31. [DOI: 10.1292/jvms.11-0137] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Yasuhiro UNO
- Pharmacokinetics and Bioanalysis Center, Shin Nippon Biomedical Laboratories
| | - Akinori MATSUSHITA
- Pharmacokinetics and Bioanalysis Center, Shin Nippon Biomedical Laboratories
| | - Hiroshi YAMAZAKI
- Laboratory of Drug Metabolism and Pharmacokinetics, Showa Pharmaceutical University
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Pastina I, Giovannetti E, Chioni A, Sissung TM, Crea F, Orlandini C, Price DK, Cianci C, Figg WD, Ricci S, Danesi R. Cytochrome 450 1B1 (CYP1B1) polymorphisms associated with response to docetaxel in Castration-Resistant Prostate Cancer (CRPC) patients. BMC Cancer 2010; 10:511. [PMID: 20875115 PMCID: PMC2955042 DOI: 10.1186/1471-2407-10-511] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2010] [Accepted: 09/27/2010] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The selection of patients according to key genetic characteristics may help to tailor chemotherapy and optimize the treatment in Castration-Resistant Prostate Cancer (CRPC) patients. Functional polymorphisms within the cytochrome P450 1B1 (CYP1B1) gene have been associated with alterations in enzymatic expression and activity and may change sensitivity to the widely used docetaxel regimen. METHODS CYP1B1 genotyping was performed on blood samples of 60 CRPC patients treated with docetaxel, using TaqMan probes-based assays. Association between CYP1B1-142C>G (leading to the 48ArgGly transition), 4326C>G (432LeuVal), and 4390A>G (453AsnSer) polymorphisms and treatment response, progression-free-survival (PFS) and overall-survival (OS) was estimated using Pearson χ2 test, Kaplan-Meier curves and Log-rank test. RESULTS Patients carrying the CYP1B1-432ValVal genotype experienced a significantly lower response-rate (P = 0.014), shorter progression-free-survival (P = 0.032) and overall-survival (P < 0.001). Multivariate analyses and correction for multiple comparisons confirmed its prognostic significance for OS. No significant associations were found among other polymorphisms and both response and clinical outcome. CONCLUSIONS CYP1B1-4326C>G (432LeuVal) polymorphism emerged as possible predictive marker of response and clinical outcome to docetaxel in CRPC patients and may represent a potential new tool for treatment optimization. Larger prospective trials are warranted to validate these findings, which might be applied to the future practice of CRPC treatment.
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Affiliation(s)
- Ilaria Pastina
- Department of Medical Oncology, Pisa University Hospital, Pisa, Italy
- Grosseto Civic Hospital, Grosseto, Italy
| | - Elisa Giovannetti
- Division of Pharmacology and Chemotherapy, Department of Internal Medicine, University of Pisa; Via Roma 55, 56100 Pisa, Italy
- Department of Medical Oncology, VU University Medical Center, De Boelelaan 1117, 1081HV, Amsterdam, The Netherlands
| | - Aldo Chioni
- Department of Medical Oncology, Pisa University Hospital, Pisa, Italy
- Grosseto Civic Hospital, Grosseto, Italy
| | - Tristan M Sissung
- Medical Oncology Branch, National Cancer Institute, 9000 Rockville Pike Building 10, Room 5A01, Bethesda, MD 20892, US
| | - Francesco Crea
- Division of Pharmacology and Chemotherapy, Department of Internal Medicine, University of Pisa; Via Roma 55, 56100 Pisa, Italy
| | - Cinzia Orlandini
- Department of Medical Oncology, Pisa University Hospital, Pisa, Italy
| | - Douglas K Price
- Medical Oncology Branch, National Cancer Institute, 9000 Rockville Pike Building 10, Room 5A01, Bethesda, MD 20892, US
| | - Claudia Cianci
- Department of Medical Oncology, Pisa University Hospital, Pisa, Italy
| | - William D Figg
- Medical Oncology Branch, National Cancer Institute, 9000 Rockville Pike Building 10, Room 5A01, Bethesda, MD 20892, US
| | - Sergio Ricci
- Department of Medical Oncology, Pisa University Hospital, Pisa, Italy
| | - Romano Danesi
- Division of Pharmacology and Chemotherapy, Department of Internal Medicine, University of Pisa; Via Roma 55, 56100 Pisa, Italy
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Trubicka J, Grabowska-Kłujszo E, Suchy J, Masojć B, Serrano-Fernandez P, Kurzawski G, Cybulski C, Górski B, Huzarski T, Byrski T, Gronwald J, Złowocka E, Kładny J, Banaszkiewicz Z, Wiśniowski R, Kowalska E, Lubinski J, Scott RJ. Variant alleles of the CYP1B1 gene are associated with colorectal cancer susceptibility. BMC Cancer 2010; 10:420. [PMID: 20701755 PMCID: PMC2929240 DOI: 10.1186/1471-2407-10-420] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2009] [Accepted: 08/11/2010] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND CYP1B1 is a P450 enzyme which is involved in the activation of pro-carcinogens to carcinogens as well as sex hormone metabolism. Because differences in the activity of the enzyme have been correlated with variant alleles of single nucleotide polymorphisms (SNPs), it represents an attractive candidate gene for studies into colorectal cancer susceptibility. METHODS We genotyped 597 cancer patients and 597controls for three CYP1B1 SNPs, which have previously been shown to be associated with altered enzymatic activity. Using the three SNPs, eight different haplotypes were constructed. The haplotype frequencies were estimated in cases and controls and then compared. The odds ratio for each tumour type, associated with each haplotype was estimated, with reference to the most common haplotype observed in the controls. RESULTS The three SNPs rs10012, rs1056827 and rs1056836 alone did not provide any significant evidence of association with colorectal cancer risk. Haplotypes of rs1056827 and rs10012 or rs1056827 and rs1056836 revealed an association with colorectal cancer which was significantly stronger in the homozygous carriers. One haplotype was under represented in the colorectal cancer patient group compared to the control population suggesting a protective effect. CONCLUSION Genetic variants within the CYP1B1 that are associated with altered function appear to influence susceptibility to a colorectal cancer in Poland. Three haplotypes were associated with altered cancer risk; one conferred protection and two were associated with an increased risk of disease. These observations should be confirmed in other populations.
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Affiliation(s)
- Joanna Trubicka
- Department of Genetics and Pathology, International Hereditary Cancer Center, Pomeranian Medical University, Szczecin, Poland
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Rizzo R, Spaggiari F, Indelli M, Lelli G, Baricordi OR, Rimessi P, Ferlini A. Association of CYP1B1 with hypersensitivity induced by taxane therapy in breast cancer patients. Breast Cancer Res Treat 2010; 124:593-8. [PMID: 20632082 DOI: 10.1007/s10549-010-1034-5] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2010] [Accepted: 06/30/2010] [Indexed: 01/11/2023]
Abstract
Taxanes represent a group of anticancer drugs with a wide range of activity against breast cancer. Therapy side effects include haematologic toxicity (neutropenia, leucopenia), peripheral neuropathy and hypersensitivity, and demonstrate inter-individual variations. Since it is known that three genes are implicated in taxane turnover, namely ABCB1 in the transport, CYP2C8 in the metabolism and CYP1B1 in the activity, we explored the association among polymorphisms (single nucleotide polymorphisms, SNPs) in these three genes and the occurrence of taxane-induced toxicity. We studied 95 patients affected by breast cancer and under treatment with taxanes as adjuvant, metastatic or neo-adjuvant therapy. We genotyped them for SNPs in the CYP2C8 (alleles *1, *2, *3 and *4), CYP1B1 (alleles *1 and *3) and ABCB1 (1236 C>T; 2677 G>T/A; 3435 C>T) genes by real-time PCR assay. We observed a significant association between the CYP1B1*3 allele and a lower occurrence of hypersensitivity reactions to taxane treatment. We speculate that the highest production of 4-hydroxyestradiol (4-OHE2) metabolite by CYP1B1*3 allele could increase the formation of the 4-OHE2-taxane adduct and possibly inhibit taxane toxicity. We suggest that CYP1B1 might affect taxane hypersensitivity therefore representing, if confirmed in a large cohort of patients, an exploratory hypersensitivity predictive biomarker.
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Affiliation(s)
- Roberta Rizzo
- Department of Experimental and Diagnostic Medicine, Section of Medical Genetics, University of Ferrara, Via Fossato di Mortara, 74, 44121, Ferrara, Italy
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Helmig S, Hadzaad B, Döhrel J, Schneider J. Influence of the Cyp1B1 L432V gene polymorphism and exposure to tobacco smoke on Cyp1B1 mRNA expression in human leukocytes. Drug Metab Dispos 2009; 37:1490-5. [PMID: 19349377 DOI: 10.1124/dmd.109.027060] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Cytochrome P450 1B1 (CYP1B1), a phase I enzyme, is involved in the activation of a broad spectrum of procarcinogens. An association of the Cyp1B1 L432V polymorphism with diverse types of cancer, as well as an impact on the catalytic activity of the enzyme, has been described. To show the functional impact of the allelic variant Cyp1B1*3, we investigated the quantitative Cyp1B1 mRNA expression in a population of smokers, nonsmokers, and ex-smokers and determined their genotypes. Detection of the L432V polymorphism in exon 3 of the Cyp1B1 gene was performed by rapid capillary polymerase chain reaction (PCR) with melting curve analysis. For quantitative comparison of Cyp1B1 mRNA levels, real-time PCR was performed using SYBR Green fluorescence in a LightCycler system. Calculations of expression were made with the 2(-DeltaDeltaCT) method. In comparing relative Cyp1B1 mRNA expression, highly significant differences between the two homozygote genotypes *1/*1 and *3/*3 (0.185 +/- 0.027, n = 118 versus 0.071 +/- 0.013, n = 56; p = 0.000), as well as between the heterozygote genotype *1/*3 and the homozygote genotype *3/*3 (0.178 +/- 0.025, n = 171 versus 0.071 +/- 0.013, n = 56; p = 0.000), were revealed. Significant differences between the genotypes were also detected within the subgroups of smokers, nonsmokers, and ex-smokers. No significant differences were determined in comparing the relative Cyp1B1 mRNA expression with regard to tobacco smoke exposure. Our results suggest that genotypes carrying the C allele (*1/*1 and *1/*3) at Cyp1B1 L432V polymorphism have a significantly higher Cyp1B1 mRNA expression compared with the genotype without the C allele (*3/*3). Gene expression of Cyp1B1 mRNA cannot be used as a biomarker for exposure of tobacco smoke.
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Affiliation(s)
- Simone Helmig
- Institut und Poliklinik für Arbeitsund Sozialmedizin, Justus-Liebig Universität, Aulweg 129, D-35392 Giessen, Germany.
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Golden R, Kimbrough R. Weight of Evidence Evaluation of Potential Human Cancer Risks from Exposure to Polychlorinated Biphenyls: An Update Based on Studies Published Since 2003. Crit Rev Toxicol 2009; 39:299-331. [DOI: 10.1080/10408440802291521] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Hu SW, Lin P, Chen CC. Association of cytochrome P450 1B1 gene expression in peripheral leukocytes with blood lipid levels in waste incinerator workers. Ann Epidemiol 2008; 18:784-91. [PMID: 18922394 DOI: 10.1016/j.annepidem.2008.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2007] [Revised: 05/06/2008] [Accepted: 05/07/2008] [Indexed: 10/21/2022]
Abstract
PURPOSE This study investigated whether CYP1B1 gene expression was associated with blood lipids levels. METHODS Workers from a municipal waste incineration plant in Taiwan participated in a questionnaire survey and physical examination and provided fasting blood samples for blood lipid analysis. CYP1B1 gene expression in workers' leukocytes was determined with the real-time reverse transcriptase polymerase chain reaction method, and 112 workers were categorized into three groups (low-, medium-, and high-expression) by their relative CYP1B1 gene expression levels. Multiple regression analyses were used to assess the association between blood lipid parameter and CYP1B1 expression. RESULTS High-density lipoprotein (HDL) cholesterol was significantly lower in the high CYP1B1 expression group than in the low- and medium-expression groups (parameter estimate [standard error]=-7.16 [2.42] and -7.02 [2.46] mg/dL, respectively), after controlling for age, sex, CYP1B1 genotype, duration of employment, current number of cigarettes smoked per day, current alcohol drinking status, and body mass index. Triglycerides, low-density lipoprotein (LDL), and total cholesterol were not significantly different among the CYP1B1 expression groups. Furthermore, workers carrying the CYP1B1 *3 allele had significantly higher mean HDL, LDL, and total cholesterol, respectively, than those with CYP1B1 *1/ *1. CONCLUSIONS CYP1B1 expression was associated with decreased HDL cholesterol levels in incinerator workers.
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Affiliation(s)
- Suh-Woan Hu
- Institute of Stomatology and Department of Public Health, Chung Shan Medical University, Taichung, Taiwan.
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A human intervention study with foods containing natural Ah-receptor agonists does not significantly show AhR-mediated effects as measured in blood cells and urine. Chem Biol Interact 2008; 176:19-29. [PMID: 18762178 DOI: 10.1016/j.cbi.2008.07.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2008] [Revised: 07/22/2008] [Accepted: 07/28/2008] [Indexed: 11/22/2022]
Abstract
Binding and activation of the aryl hydrocarbon receptor (AhR) is thought to be an essential step in the toxicity of the environmental pollutants dioxins and dioxin-like PCBs. However, also a number of natural compounds, referred to as NAhRAs (natural Ah-receptor agonists), which are present in, for example, fruits and vegetables, can bind and activate this receptor. To study their potential effects in humans, we first investigated the effect of the prototypical AhR agonist 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) on gene expression in ex vivo exposed freshly isolated human lymphocytes, and compared the resulting gene expression profile with those caused by the well-known NAhRA indolo[3,2-b]carbazole (ICZ), originating from cruciferous vegetables, and by a hexane extract of NAhRA-containing grapefruit juice (GJE). Only ICZ induced a gene expression profile similar to TCDD in the lymphocytes, and both significantly up-regulated CYP1B1 and TIPARP (TCDD-inducible poly (ADP-ribose) polymerase) mRNA. Next, we performed a human intervention study with NAhRA-containing cruciferous vegetables and grapefruit juice. The expression of the prototypical AhR-responsive genes CYP1A1, CYP1B1 and NQO1 in whole blood cells and in freshly isolated lymphocytes was not significantly affected. Also enzyme activities of CYP1A2, CYP2A6, N-acetyltransferase 2 (NAT2) and xanthine oxidase (XO), as judged by caffeine metabolites in urine, were unaffected, except for a small down-regulation of NAT2 activity by grapefruit juice. Examination of blood plasma with DR CALUX showed a 12% increased AhR agonist activity 3 and 24 h after consumption of cruciferous vegetables, but did not show a significant effect of grapefruit juice consumption. We conclude that intake of NAhRAs from food may result in minor AhR-related effects measurable in human blood and urine.
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Distinct subtypes of urinary bladder epithelial cells with inducible and non-inducible cytochrome P450 1A1. Arch Toxicol 2008; 83:131-8. [DOI: 10.1007/s00204-008-0329-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2008] [Accepted: 06/10/2008] [Indexed: 10/21/2022]
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Shah PP, Singh AP, Singh M, Mathur N, Mishra BN, Pant MC, Parmar D. Association of functionally important polymorphisms in cytochrome P4501B1 with lung cancer. Mutat Res 2008; 643:4-10. [PMID: 18573508 DOI: 10.1016/j.mrfmmm.2008.05.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2007] [Revised: 04/30/2008] [Accepted: 05/08/2008] [Indexed: 11/17/2022]
Abstract
In the present study, genotype and haplotype frequencies of four polymorphisms of cytochrome P450 1B1 (CYP1B1) that cause amino acid changes (Arg-Gly at codon 48, Ala-Ser at codon 119, Leu-Val at 432 and Asn-Ser at codon 453) were studied in 200 patients suffering from lung cancer and equal number of controls. A significant difference was observed for the distribution of variant genotypes of CYP1B1Arg48Gly and Ala119Ser polymorphisms (CYP1B1*2) in cases when compared to the controls. No significant difference was observed for the distribution of variant genotypes of CYP1B1Leu432Val (CYP1B1*3) and CYP1B1Asn453Ser (CYP1B1*4) polymorphism. When the four SNPs were analyzed using a haplotype approach, SNPs at codon 48 (Arg48Gly) and codon 119 (Ala119Ser) exhibited complete linkage disequilibrium (LD) in all the cases and controls. Significant differences in the distribution of the three haplotypes (G-T-C-A, G-T-G-A and G-T-C-G) were observed in the cases when compared to controls. Tobacco use in the form of smoking as well as chewing was found to significantly increase the risk of lung cancer in patients by interacting with CYP1B1Ala119Ser genotypes demonstrating the role of gene-environment interaction in lung cancer. Further, the risk of lung cancer increased several fold in the patients carrying the genotype combinations of CYP1B1Ala119Ser and CYP1B1Leu432Val with GSTM1, a phase II enzyme suggesting the importance of gene-gene interactions in enhancing the susceptibility to lung cancer.
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Affiliation(s)
- Parag P Shah
- Developmental Toxicology Division, Indian Institute of Toxicology Research (Formerly Industrial Toxicology Research Centre), P.O. Box 80, M.G. Marg, Lucknow 226001, India
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Sissung TM, Danesi R, Price DK, Steinberg SM, de Wit R, Zahid M, Gaikwad N, Cavalieri E, Dahut WL, Sackett DL, Figg WD, Sparreboom A. Association of the CYP1B1*3 allele with survival in patients with prostate cancer receiving docetaxel. Mol Cancer Ther 2008; 7:19-26. [PMID: 18187806 DOI: 10.1158/1535-7163.mct-07-0557] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Using a single nucleotide polymorphism association study in 52 men with prostate cancer receiving docetaxel, we found that individuals carrying two copies of the CYP1B1*3 polymorphic variant had a poor prognosis after docetaxel-based therapies compared with individuals carrying at least one copy of the CYP1B1*1 allele (30.6 versus 12.8 months; P=0.0004). The association between CYP1B1*3 and response to therapy was not observed in similar subjects receiving non-taxane-based therapy (P=0.18). The systemic clearance of docetaxel was also unrelated to CYP1B1 genotype status (P=0.39), indicating that the association of CYP1B1*3 with clinical response is not due to docetaxel metabolism. To explain these results, we hypothesized that an indirect gene-drug interaction was interfering with the primary mechanism of action of docetaxel, tubulin polymerization. We therefore conducted tubulin polymerization experiments with taxanes in the presence or absence of certain CYP1B1 estrogen metabolites, which are known to bind to nucleophilic sites in proteins and DNA, that revealed the primary estrogen metabolite of CYP1B1, 4-hydroxyestradiol (4-OHE2), when oxidized to estradiol-3,4-quinone strongly inhibits tubulin polymerization. The 4-OHE2 is also formed more readily by the protein encoded by the CYP1B1*3 allele, validating further our data in patients. Furthermore, estradiol-3,4-quinone reacted in vitro with docetaxel to form the 4-OHE2-docetaxel adduct. This pilot study provides evidence that CYP1B1*3 may be an important marker for estimating docetaxel efficacy in patients with prostate cancer. This link is likely associated with CYP1B1*3 genotype-dependent estrogen metabolism.
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Affiliation(s)
- Tristan M Sissung
- Clinical Pharmacology Research Program, Medical Oncology Branch, Biostatistics and Data Management Section, Center for Cancer Research, National Cancer Institute, 9000 Rockville Pike, Building 10, Room 5A01, Bethesda, MD 20892, USA
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Siest G, Jeannesson E, Marteau JB, Samara A, Marie B, Pfister M, Visvikis-Siest S. Transcription factor and drug-metabolizing enzyme gene expression in lymphocytes from healthy human subjects. Drug Metab Dispos 2008; 36:182-9. [PMID: 17940135 DOI: 10.1124/dmd.107.017228] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2025] Open
Abstract
We aimed to measure simultaneously the expression of drug-metabolizing enzymes (DME) and transcription factors (TF) with high importance in cardiovascular physiopathology in lymphocytes from healthy subjects. RNA was isolated from peripheral blood mononuclear cells (PBMC) of 20 subjects from the Stanislas Cohort. We used a microarray approach to measure 16 DME and 13 TF. Cytochromes P450 (P450s), including CYP2C19, CYP2C9, CYP2J2, CYP2D6, CYP1A1, CYP4F2, CYP4A11, CYP2E1, CYP11B2, CYP2C18, and CYP2A6, were expressed in all the subjects. CYP3A4 and CYP3A5 were not expressed. Glutathione S-transferases (GST) were expressed, but GSTM1 was seen only in some subjects. Pregnane X receptor (PXR), myocyte enhancer factor 2, vitamin D receptor, liver X receptor (LXR)-alpha, aryl hydrocarbon receptor (AHR), T-cell factor 7, constitutive androstane receptor, and aryl hydrocarbon receptor nuclear translocator (ARNT) were expressed in the majority of the subjects. Glucocorticoid receptor, peroxisome proliferator-activated receptor (PPAR)-gamma, and LXRbeta were expressed only in some individuals. PPARalpha mRNA was found in one subject only, and farnesoid X-activated receptor was not expressed. In addition, we found significant correlations between the expression of AHR, ARNT, and CYP1A1 and between PXR and P450 involved in leukotriene metabolism (CYP2C, CYP4F2, CYP4A11, CYP2J2, and CYP11B2). We describe here for the first time the presence of the majority of TF and DME in PBMC of healthy subjects without previous induction. The expression of these genes in lymphocytes could be a useful tool for further studying the physiological and pathological variations of DME and TF related to environment, to drug intake, and to cardiovascular metabolic cycles.
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Affiliation(s)
- Gérard Siest
- Equipe Institut National de la Santé et de la Recherche Médicale Génétique Cardiovasculaire CIC 9501, Faculté de Pharmacie, Université Henri Poincaré-Nancy I, Nancy, France.
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Singh AP, Shah PP, Mathur N, Buters JTM, Pant MC, Parmar D. Genetic polymorphisms in cytochrome P4501B1 and susceptibility to head and neck cancer. Mutat Res 2007; 639:11-9. [PMID: 18067928 DOI: 10.1016/j.mrfmmm.2007.10.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2007] [Revised: 10/24/2007] [Accepted: 10/26/2007] [Indexed: 01/21/2023]
Abstract
Cytochrome P4501B1 (CYP1B1), a polycyclic aromatic hydrocarbon (PAH) metabolizing CYP, is genetically polymorphic in humans and may be involved in the individual susceptibility to chemical-induced cancer. In the present study, genotype and haplotype frequencies of four single nucleotide polymorphisms (SNPs) in CYP1B1 that cause amino acid changes (Arg-Gly at codon 48, Ala-Ser at codon 119, Leu-Val at codon 432 and Asn-Ser at codon 453) were studied in 150 cases suffering from head and neck squamous cell carcinoma (HNSCC) and in an equal number of controls. A significant difference was observed for the distribution of variant genotypes of Arg48Gly (CYP1B1*2) and Ala119Ser (CYP1B1*2) polymorphisms of CYP1B1 in cases versus controls. No significant differences were observed for the distribution of variant genotypes-Leu432Val (CYP1B1*3) and Asn453Ser (CYP1B1*4), respectively. When the four SNPs were analyzed using a haplotype approach, SNPs at codon 48 (Arg48Gly) and codon 119 (Ala119Ser) exhibited complete linkage disequilibrium (LD) in all the cases and controls. Significant differences in the distribution of the two haplotypes (G-T-C-A and G-T-G-A) were observed both in the cases and in controls. Furthermore, our data indicates a several fold increase in risk in the cases who use tobacco (cigarette smoking or tobacco chewing) or alcohol with the variant genotypes of CYP1B1 (CYP1B1*2 and CYP1B1*3) suggesting the role of gene-environment interaction in the susceptibility to HNSCC.
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Affiliation(s)
- Arvind P Singh
- Developmental Toxicology Division, Industrial Toxicology Research Centre, Lucknow 226001, India
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Yi B, Yang JY, Yang M. Past and future applications of CYP450-genetic polymorphisms for biomonitoring of environmental toxicants. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART C, ENVIRONMENTAL CARCINOGENESIS & ECOTOXICOLOGY REVIEWS 2007; 25:353-377. [PMID: 18000786 DOI: 10.1080/10590500701704037] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Cytochrome P450s (CYPs) are a huge gene superfamily of heme enzymes involved in xenobioitc as well as endobiotic metabolism. They play a critical role in adaptation to environmental changes for survival of living organisms. In addition, the huge environmental loads of human-made chemicals are biotransformed into bioactive or detoxified forms by CYPs. Thus, CYPs have been used for biomonitoring of environmental pollutants, screening of their metabolisms and exploring remedy. In particular, the induction or inhibition of CYPs has been applied to exposure monitoring of environmental toxicants, which are biotransformed by CYPs. This review considers past and future applications of CYP-genetic polymorphisms as susceptibility biomarkers for biomonitoring. Furthermore, we suggest the needs for further understanding of the characteristics of each CYP isozyme, consideration of real-life exposures such as mixed contamination with various chemicals, and incorporation of the presence of other phase I and phase II enzymes, for proper applications of CYP polymorphisms on biomonitoring.
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Affiliation(s)
- Bitna Yi
- Sookmyung Women's University, College of Pharmacy, Seoul, Korea
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41
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Pérez-Cadahía B, Valdiglesias V, Pásaro E, Méndez J, Laffon B. Genetic Polymorphism in Cytochrome P450 1B1 in a Spanish Population. Basic Clin Pharmacol Toxicol 2007; 101:70-2. [PMID: 17577319 DOI: 10.1111/j.1742-7843.2007.00086.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tsuchiya M, Tsukino H, Iwasaki M, Sasaki H, Tanaka T, Katoh T, Patterson DG, Turner W, Needham L, Tsugane S. Interaction between cytochrome P450 gene polymorphisms and serum organochlorine TEQ levels in the risk of endometriosis. ACTA ACUST UNITED AC 2007; 13:399-404. [PMID: 17449539 DOI: 10.1093/molehr/gam018] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Exposure to dioxins and polychlorinated biphenyls (PCBs) has been suggested as a possible etiologic factor for endometriosis, but the association remains highly controversial. To assess whether cytochrome P450 (CYP) gene polymorphisms modulate the effect of dioxins and/or PCBs in endometriosis risk, we conducted a case-control study among infertile Japanese women. A total of 138 eligible women aged 20-45 were diagnosed laparoscopically and classified into three subgroups: control (no endometriosis), early endometriosis (stages I-II) and advanced endometriosis (stages III-IV). Neither CYP1A1 Ile462Val and CYP1B1 Leu432Val polymorphisms (genotypes with versus genotypes without the minor allele) nor serum dioxin and PCB toxic equivalency (TEQ) levels (low versus high) were independently associated with either early or advanced endometriosis risk. However, genotypes with the CYP1A1 462Val allele showed a statistically significant reduced risk of advanced endometriosis in combination with high serum dioxin TEQ levels (adjusted odds ratio = 0.13, 95% confidence interval: 0.02-0.76) (P for interaction = 0.08). Although no association was found between serum PCB TEQ level and advanced endometriosis in any stratum of CYP1B1 Leu432Val polymorphism, a statistically significant interaction was found (P for interaction = 0.05). CYP1A1 and CYP1B1 polymorphisms may modify the relation between environmental exposure to organochlorine and advanced endometriosis risk.
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Affiliation(s)
- Masaki Tsuchiya
- Epidemiology and Prevention Division, Research Center for Cancer prevention and Screening, National Cancer Center, 5-1-1 Tsukiji, Tokyo, 104-0045, Japan
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Marsh S, Somlo G, Li X, Frankel P, King CR, Shannon WD, McLeod HL, Synold TW. Pharmacogenetic analysis of paclitaxel transport and metabolism genes in breast cancer. THE PHARMACOGENOMICS JOURNAL 2007; 7:362-5. [PMID: 17224914 DOI: 10.1038/sj.tpj.6500434] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Paclitaxel is commonly used in the treatment of breast cancer. Variability in paclitaxel clearance may contribute to the unpredictability of clinical outcomes. We assessed genomic DNA from the plasma of 93 patients with high-risk primary or stage IV breast cancer, who received dose-intense paclitaxel, doxorubicin and cyclophosphamide. Eight polymorphisms in six genes associated with metabolism and transport of paclitaxel were analyzed using Pyrosequencing. We found no association between ABCB1, ABCG2, CYP1B1, CYP3A4, CYP3A5 and CYP2C8 genotypes and paclitaxel clearance. However, patients homozygous for the CYP1B1*3 allele had a significantly longer progression-free survival than patients with at least one Valine allele (P=0.037). This finding could reflect altered paclitaxel metabolism, however, the finding was independent of paclitaxel clearance. Alternatively, the role of CYP1B1 in estrogen metabolism may influence the risk of invasive or paclitaxel resistant breast cancer in patients carrying the CYP1B1*3 allele.
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Affiliation(s)
- S Marsh
- Department of Medicine, Washington University School of Medicine, St Louis, MO 63110, USA.
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Yokouchi Y, Muguruma M, Moto M, Takahashi M, Jin M, Kenmochi Y, Kohno T, Dewa Y, Mitsumori K. Molecular Analysis on the Possible Mechanism of .BETA.-Naphthoflavone-Induced Hepatocarcinogenesis in Rats. J Toxicol Pathol 2007. [DOI: 10.1293/tox.20.29] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Yusuke Yokouchi
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
| | - Masako Muguruma
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
| | - Mitsuyoshi Moto
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
| | - Miwa Takahashi
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
| | - Meilan Jin
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
| | - Yusuke Kenmochi
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
| | - Taichi Kohno
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
| | - Yasuaki Dewa
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
| | - Kunitoshi Mitsumori
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
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Maruyama W, Aoki Y. Estimated cancer risk of dioxins to humans using a bioassay and physiologically based pharmacokinetic model. Toxicol Appl Pharmacol 2006; 214:188-98. [PMID: 16443251 DOI: 10.1016/j.taap.2005.12.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2005] [Revised: 12/08/2005] [Accepted: 12/12/2005] [Indexed: 11/28/2022]
Abstract
The health risk of dioxins and dioxin-like compounds to humans was analyzed quantitatively using experimental data and mathematical models. To quantify the toxicity of a mixture of three dioxin congeners, we calculated the new relative potencies (REPs) for 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), 1,2,3,7,8-pentachlorodibenzo-p-dioxin (PeCDD), and 2,3,4,7,8- pentachlorodibenzofuran (PeCDF), focusing on their tumor promotion activity. We applied a liver foci formation assay to female SD rats after repeated oral administration of dioxins. The REP of dioxin for a rat was determined using dioxin concentration and the number of the foci in rat liver. A physiologically based pharmacokinetic model (PBPK model) was used for interspecies extrapolation targeting on dioxin concentration in liver. Toxic dose for human was determined by back-estimation with a human PBPK model, assuming that the same concentration in the target tissue may cause the same level of effect in rats and humans, and the REP for human was determined by the toxic dose obtained. The calculated REPs for TCDD, PeCDD, and PeCDF were 1.0, 0.34, and 0.05 for rats, respectively, and the REPs for humans were almost the same as those for rats. These values were different from the toxic equivalency factors (TEFs) presented previously (Van den Berg, M., Birnbaum, L., Bosveld, A.T.C., Brunstrom, B., Cook, P., Feeley, M., Giesy, J.P., Hanberg, A., Hasegawa, R., Kennedy, S.W., Kubiak, T., Larsen, J.C., Rolaf van Leeuwen, F.X., Liem, A.K.D., Nolt, C., Peterson, R.E., Poellinger. L., Safe, S., Schrenk, D., Tillitt, D, Tysklind, M., Younes, M., Waern, F., Zacharewski, T., 1998. Toxic equivalency factors (TEFs) for PCBs, PCDDs, PCDFs for humans and wildlife. Environ. Health Perspect. 106, 775-792). The relative risk of excess liver cancer for Japanese people in general was 1.7-6.5 x 10(-7) by TCDD only, and 2.9-11 x 10(-7) by the three dioxins at the present level of contamination.
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Affiliation(s)
- Wakae Maruyama
- Research Center for Environmental Risk, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba 305-8506, Japan.
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Sissung TM, Price DK, Sparreboom A, Figg WD. Pharmacogenetics and regulation of human cytochrome P450 1B1: implications in hormone-mediated tumor metabolism and a novel target for therapeutic intervention. Mol Cancer Res 2006; 4:135-50. [PMID: 16547151 DOI: 10.1158/1541-7786.mcr-05-0101] [Citation(s) in RCA: 116] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Several of the hormone-mediated cancers (breast, endometrial, ovarian, and prostate) represent major cancers in both incidence and mortality rates. The etiology of these cancers is in large part modulated by the hormones estrogen and testosterone. As advanced disease develops, the common treatment for these cancers is chemotherapy. Thus, genes that can alter tissue response to hormones and alter clinical response to chemotherapy are of major interest. The cytochrome P450 1B1 (CYP1B1) may be involved in disease progression and modulate the treatment in the above hormone-mediated cancers. This review will focus on the pharmacogenetics of CYP1B1 in relation to hormone-mediated cancers and provide an assessment of cancer risk based on CYP1B1 polymorphisms and expression. In addition, it will provide a summary of CYP1B1 gene regulation and expression in normal and neoplastic tissue.
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Affiliation(s)
- Tristan M Sissung
- Clinical Pharmacology Research Core, National Cancer Institute, 9000 Rockville Pike, Building 10, Room 5A01, Bethesda, MD 20892, USA
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47
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Hu SW, Chen CC, Kuo CY, Lin WH, Lin P. Increased cytochrome P4501B1 gene expression in peripheral leukocytes of municipal waste incinerator workers. Toxicol Lett 2006; 160:112-20. [PMID: 16098693 DOI: 10.1016/j.toxlet.2005.06.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2005] [Accepted: 06/19/2005] [Indexed: 11/16/2022]
Abstract
Incinerator workers are exposed to polycyclic aromatic hydrocarbons (PAHs) and dioxins in workplace. Previous studies indicated that aryl hydrocarbon receptor activation, following by increased cytochrome P4501A1 (CYP1A1) and 1B1 (CYP1B1) activity and expressions, was required for PAHs and dioxin induced toxicities. This study investigated whether municipal waste incinerator workers with frequent exposure to PAHs/dioxins in fly/bottom ash had increased CYP1A1 and CYP1B1 expressions in peripheral leukocytes and assessed whether CYP1B1*3 polymorphism modified the association between PAHs/dioxins exposure and CYP1B1 expressions. Based on job contents and time-activity profiles, 112 workers were classified into high exposure, medium exposure and control groups. CYP1A1 and CYP1B1 gene expressions in workers' leukocytes were determined with the real-time reverse transcriptase polymerase chain reaction method. After taking into account age, gender and smoking in the multiple regression analyses, CYP1B1, but not CYP1A1, levels were significantly higher in the high and medium exposure groups than in the control group, and there was a statistically significant interaction between exposure group and CYP1B1 genotype. These results suggested that CYP1B1 gene expression could be a potential biomarker of biologically effective dose for occupational exposure to PAHs/dioxins and CYP1B1*3 polymorphism modified effects of occupational exposures on CYP1B1 expression.
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Affiliation(s)
- Suh-Woan Hu
- Institute of Stomatology and Department of Public Health, Chung Shan Medical University, Taichung, Taiwan
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Rolle-Kampczyk UE, Rehwagen M, Franck U, Weiss H, Krumbiegel P, Herbarth O. Bio-effect monitoring using a [(15)N]methacetin test as diagnostic tool to monitor remediation effects in an industrially polluted region. Toxicol Lett 2005; 162:234-8. [PMID: 16242870 DOI: 10.1016/j.toxlet.2005.09.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The classical way to demonstrate the efficiency of remediation is measuring the reduction of toxic compounds in the environment. Nevertheless, more important is the risk reduction in human health. To determine changing health effects, exposure and bio-effects have to be monitored at time of and during remediation. Kindergarten children from a heavily polluted industrial (n=23) and a control area (n=12) were investigated. The region-specific outdoor and indoor exposure [27 volatile organic compounds (VOC), emphasis on tri- and tetrachloroethylene (TRI, TETRA)], the internal load [(trichloroacetic acid-TCA-as urine metabolites of TRI and TETRA and S-phenyl- and S-benzylmercapturic acid (SPMA and SBMA) as metabolites of benzene and toluene], and biological effect assessment ([(15)N]methacetin test-a non-invasive stable isotope test to determine the unspecific liver detoxification capacity of an individual) were measured twice a year during 2 years of remediation (1997/1998). It could be shown that in- and outdoor levels of TRI and TETRA decreased by 47% in the heavily polluted village, Greppin, while the levels remained much the same in the control village, Roitzsch. This trend was reflected in the decreasing elimination of TCA in the urine (41%) by the Greppin children, with no differences in the TCA elimination in Roitzsch probands. As the remediation efforts decreased the burden of exposure, the children's liver detoxification capacity improved as well. Combining different methods, such as exposure-effect (external and internal loads) and bio-effect monitoring, proved to be useful to assess remediation successes including the improvement in human health.
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Affiliation(s)
- Ulrike Elisabeth Rolle-Kampczyk
- The UFZ Leipzig-Halle, Department of Human Exposure Research and Epidemiology, Permoser Street 15, D-04318 Leipzig, Germany.
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Giacomini SM, Hou L, Bertazzi PA, Baccarelli A. Dioxin effects on neonatal and infant thyroid function: routes of perinatal exposure, mechanisms of action and evidence from epidemiology studies. Int Arch Occup Environ Health 2005; 79:396-404. [PMID: 16217675 DOI: 10.1007/s00420-005-0049-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2005] [Accepted: 09/20/2005] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Animal experiments suggest that thyroid function alterations in newborns and infants may represent one of the most sensitive markers of toxicity from 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). Dioxin can be transferred from the mother to the offspring either in utero or through lactation. It has been suggested that thyroid-hormone alterations produced by dioxin in utero or shortly after birth may underlie long-term effects, such as cognitive-ability and neurodevelopment impairment. In the present review article, we appraise available evidence on the effects of perinatal exposure to dioxin on fetal and infant thyroid function. METHODS We summarized the routes of perinatal dioxin exposure and research results on possible mechanisms of dioxin toxic effects on thyroid function. We performed a systematic review of epidemiology studies conducted on mother-child pairs exposed to background environmental levels to investigate dioxin effects on neonatal and infant thyroid function. RESULTS Toxicological and mechanistic data indicate that dioxin may impair thyroid function in exposed newborns and infants. Investigations on background-exposed children have not consistently demonstrated an association between perinatal TCDD exposure and thyroid function, although some of the studies suggest that sub-clinical hypothyroidism may be induced by perinatal dioxin exposure within 3 months from birth. Between studies inconsistencies may be related to lab method differences, mixed exposures, and small sample size of the populations evaluated. CONCLUSION Epidemiology studies have as yet failed to demonstrate an association between perinatal TCDD exposure and thyroid function alterations in human subjects, although suggestive evidence from animal and in-vitro experimental data is available.
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Affiliation(s)
- Sara Mariasole Giacomini
- EPOCA Epidemiology Research Center, Department of Environmental and Occupational Health Clinica del Lavoro L. Devoto, Maggiore Hospital Foundation IRCCS, University of Milan, via San Barnaba 8, 20122, Milan, Italy
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van Duursen MBM, Sanderson JT, van den Berg M. Cytochrome P450 1A1 and 1B1 in Human Blood Lymphocytes Are Not Suitable as Biomarkers of Exposure to Dioxin-like Compounds: Polymorphisms and Interindividual Variation in Expression and Inducibility. Toxicol Sci 2005; 85:703-12. [PMID: 15659568 DOI: 10.1093/toxsci/kfi089] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Cytochrome P450 1A1 (CYP1A1) and 1B1 (CYP1B1) are phase I enzymes, the expression of which can be affected by many environmental compounds, including dioxins and dioxin-like compounds. Because CYP1A1 and CYP1B1 expression can easily be determined in peripheral blood lymphocytes, it is often suggested as biomarker of exposure to these compounds. In this study we investigated the interindividual differences in constitutive and induced CYP1A1-catalyzed ethoxyresorufin-O-deethylase (EROD) activity and CYP1A1 and CYP1B1 gene expression in human blood lymphocytes in a group of ten non-smoking females. Freshly isolated lymphocytes were cultured in medium containing the mitogen PHA and were exposed to the most potent dioxin, 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) or the less potent dioxin-like polychlorinated biphenyl 126 (PCB126). In addition, we determined the occurrence of the CYP1A1 MspI and CYP1B1 Leu432Val polymorphisms. All individuals showed a concentration-dependent increase of EROD activity by TCDD, which was significantly correlated with an increase in CYP1A1, but not CYP1B1 expression. The maximum induced EROD activity by TCDD was very different among the individuals, but the EC50 values were about the same. PCB126 also caused a concentration-dependent increase of EROD activity, but was a factor 100-1000 less potent than TCDD among the individuals. The allele frequencies for CYP1A1 MspI and CYP1B1 Leu432Val reflected a normal Caucasian population and in this study the polymorphisms had no apparent effect on the expression and activity of these enzymes. Our study shows a large interindividual variability in constitutive and induced EROD activity, and CYP1A1 and CYP1B1 expression in human lymphocytes. In addition, dioxin concentrations at which effects were observed in our in vitro study are about 10-fold higher than the human blood levels found in vivo, indicating that EROD activity and CYP1A1 and CYP1B1 expression in human lymphocytes might not be applicable as biomarkers of exposure to dioxin and dioxin-like compounds.
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Affiliation(s)
- Majorie B M van Duursen
- Institute for Risk Assessment Sciences (IRAS), Utrecht University, Yalelaan 2, PO Box 80176, 3508 TD, Utrecht, The Netherlands.
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