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Mitsui Y, Chang I, Kato T, Hashimoto Y, Yamamura S, Fukuhara S, Wong DK, Shiina M, Imai-Sumida M, Majid S, Saini S, Shiina H, Nakajima K, Deng G, Dahiya R, Tanaka Y. Functional role and tobacco smoking effects on methylation of CYP1A1 gene in prostate cancer. Oncotarget 2018; 7:49107-49121. [PMID: 27203547 PMCID: PMC5226494 DOI: 10.18632/oncotarget.9470] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 05/04/2016] [Indexed: 01/03/2023] Open
Abstract
Cytochrome P450 (CYP) 1A1 is a phase I enzyme that can activate various compounds into reactive forms and thus, may contribute to carcinogenesis. In this study, we investigated the expression, methylation status, and functional role of CYP1A1 on prostate cancer cells. Increased expression of CYP1A1 was observed in all cancer lines (PC-3, LNCaP, and DU145) compared to BPH-1 (P < 0.05); and was enhanced further by 5-aza-2′-deoxycytidine treatment (P < 0.01). Methylation-specific PCR (MSP) and sequencing of bisulfite-modified DNA of the xenobiotic response element (XRE) enhancer site XRE-1383 indicated promoter methylation as a regulator of CYP1A1 expression. In tissue, microarrays showed higher immunostaining of CYP1A1 in prostate cancer than normal and benign prostatic hyperplasia (BPH; P < 0.001), and methylation analyses in clinical specimens revealed significantly lower methylation levels in cancer compared to BPH at all enhancer sites analyzed (XRE-1383, XRE-983, XRE-895; P < 0.01). Interestingly, smoking affected the XRE-1383 site where the methylation level was much lower in cancer tissues from smokers than non-smokers (P < 0.05). CYP1A1 levels are thus increased in prostate cancer and to determine the functional effect of CYP1A1 on cells, we depleted the gene in LNCaP and DU145 by siRNA. We observe that CYP1A1 knockdown decreased cell proliferation (P < 0.05) and increased apoptosis (P < 0.01) in both cell lines. We analyzed genes affected by CYP1A1 silencing and found that apoptosis-related BCL2 was significantly down-regulated. This study supports an oncogenic role for CYP1A1 in prostate cancer via promoter hypomethylation that is influenced by tobacco smoking, indicating CYP1A1 to be a promising target for prostate cancer treatment.
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Affiliation(s)
- Yozo Mitsui
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA.,Department of Urology, Shimane University Faculty of Medicine, Izumo, 693-8501, Japan
| | - Inik Chang
- Department of Oral Biology, Yonsei University College of Density, Seoul, 120-752, South Korea
| | - Taku Kato
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA
| | - Yutaka Hashimoto
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA
| | - Soichiro Yamamura
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA
| | - Shinichiro Fukuhara
- Department of Urology, Osaka University Graduate School of Medicine, Suita, 565-0871, Japan
| | - Darryn K Wong
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA
| | - Marisa Shiina
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA
| | - Mitsuho Imai-Sumida
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA
| | - Shahana Majid
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA
| | - Sharanjot Saini
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA
| | - Hiroaki Shiina
- Department of Urology, Shimane University Faculty of Medicine, Izumo, 693-8501, Japan
| | - Koichi Nakajima
- Department of Urology, Toho University Faculty of Medicine, Tokyo, 143-8540, Japan
| | - Guoren Deng
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA
| | - Rajvir Dahiya
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA
| | - Yuichiro Tanaka
- Department of Surgery/Urology, Veterans Affairs Health Care System, San Francisco, California 94121, USA.,Department of Urology, University of California, San Francisco, California 94121, USA
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Koda M, Iwasaki M, Yamano Y, Lu X, Katoh T. Association between NAT2, CYP1A1, and CYP1A2 genotypes, heterocyclic aromatic amines, and prostate cancer risk: a case control study in Japan. Environ Health Prev Med 2017; 22:72. [PMID: 29165164 PMCID: PMC5664586 DOI: 10.1186/s12199-017-0681-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 10/17/2017] [Indexed: 02/06/2023] Open
Abstract
Background Heterocyclic aromatic amines (HAAs) may confer prostate cancer risk; however, the evidence is inconclusive and the activity of HAA-metabolizing enzymes is modulated by gene variants. The purpose of our study was to determine whether there was evidence of an association between HAA intake, polymorphisms in NAT2, CYP1A1, and CYP1A2 and prostate cancer risk in Japanese men. Methods Secondary data analysis of an observational case control study was performed. Among 750 patients with prostate cancer and 870 healthy controls, 351 cases and 351 age-matched controls were enrolled for analysis. HAA intake was estimated using a food frequency questionnaire and genotypes were scored by TaqMan real-time PCR assay. Logistic regression analysis was conducted according to affected/control status. Results We found that high HAA intake was significantly associated with an increased risk of prostate cancer (odds ratio (OR), 1.90; 95% confidence interval (95% CI), 1.40–2.59). The increased risk of prostate cancer was observed among individuals with the NAT2 slow acetylator phenotype (OR, 1.65; 95% CI, 1.04–2.61), CYP1A1 GA + GG genotype (OR, 1.27; 95% CI, 1.02–1.59), and CYP1A2 CA + AA genotype (OR, 1.43; 95% CI, 1.03–2.00). In addition, CYP1A1 GA + GG genotypes were associated with increased cancer risk in low (OR, 2.05; 95% CI, 1.19–3.63), moderate (OR, 1.72; 95% CI, 1.07–2.76), and high (OR, 2.86; 95% CI, 1.83–4.47) HAA intake groups. Conclusions Our results suggest that high HAA intake is a risk factor of prostate cancer, and genotypes related to HAA metabolic enzymes can modulate the degree of the risk.
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Affiliation(s)
- Masahide Koda
- Department of Public Health, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjou, Chuo-ku, Kumamoto, 860-8556, Japan.
| | - Motoki Iwasaki
- Division of Epidemiology, Center for Public Health Sciences, National Cancer Center, Tokyo, Japan
| | - Yuko Yamano
- Department of Hygiene and Preventive Medicine, Showa University School of Medicine, Tokyo, Japan
| | - Xi Lu
- Department of Public Health, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjou, Chuo-ku, Kumamoto, 860-8556, Japan
| | - Takahiko Katoh
- Department of Public Health, Faculty of Life Sciences, Kumamoto University, 1-1-1 Honjou, Chuo-ku, Kumamoto, 860-8556, Japan
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Jain V, Ratre YK, Amle D, Mishra PK, Patra PK. Polymorphism of CYP1A1 gene variants rs4646903 and rs1048943 relation to the incidence of cervical cancer in Chhattisgarh. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2017; 52:188-192. [PMID: 28433806 DOI: 10.1016/j.etap.2017.04.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 04/05/2017] [Accepted: 04/11/2017] [Indexed: 06/07/2023]
Abstract
Cytochrome P450 CYP1A1 is a phase 1 xenobiotic metabolizing enzyme involved in the metabolism of toxins, endogenous hormones and pharmaceutical drugs. It is therefore possible that polymorphism of CYP1A1 gene producing functional changes in the enzyme may be susceptible factors in cervical carcinogenesis. This study was aimed to look association of CYP1A1m1 (T>C) and m2 (A>G) gene polymorphisms in Chhattisgarh population. In this case-control study, we analyzed leukocyte DNA from a total of 200 subjects form Chhattisgarh (100 cases and 100 controls). All subjects were genotyped for CYP1A1m1 (T>C) and m2 (A>G) using PCR-RFLP with statistical analysis by using SPSS version 16.0 and VassarStats (online). Among the two gene variants rs4646903 (T>C) and rs1048943 (A>G), individuals with AG and GG genotypes of CYP1A1m2 polymorphism have significantly higher and increased risk of cervical cancer (OR=2.0, 95%CI=1.04-3.84, p=0.035; OR=62.9, 95%CI=3.72-1063.83, p=0.004 respectively) and the association of CYP1A1m1 polymorphism did not show any significant relationship with cervical cancer patients (p=0.23). The 'G' allele showed strong association with the disease (p<0.0001). Thus, CYP1A1m2 polymorphism showed an increased risk in the population leading to cervical cancer. Our study suggested that the presence of 'C' allele of rs4646903 (T>C) showed no risk and 'G' allele of rs1048943 (A>G) might be a leading allele to cause increased cervical cancer susceptibility due to significant association of CYP1A1m2 gene polymorphism.
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Affiliation(s)
- Vijaylakshmi Jain
- Medical Biotechnology, Department of Biochemistry, Pt. Jawahar Lal Nehru Memorial Medical College, Raipur, 492001, India
| | - Yashwant K Ratre
- Medical Biotechnology, Department of Biochemistry, Pt. Jawahar Lal Nehru Memorial Medical College, Raipur, 492001, India
| | - Dnyanesh Amle
- Medical Biotechnology, Department of Biochemistry, Pt. Jawahar Lal Nehru Memorial Medical College, Raipur, 492001, India
| | - Pankaj K Mishra
- Medical Biotechnology, Department of Biochemistry, Pt. Jawahar Lal Nehru Memorial Medical College, Raipur, 492001, India.
| | - Pradeep K Patra
- Medical Biotechnology, Department of Biochemistry, Pt. Jawahar Lal Nehru Memorial Medical College, Raipur, 492001, India
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Wang Y, Yang H, Duan G, Wang H. The association of the CYP1A1 Ile462Val polymorphism with head and neck cancer risk: evidence based on a cumulative meta-analysis. Onco Targets Ther 2016; 9:2927-34. [PMID: 27274286 PMCID: PMC4876098 DOI: 10.2147/ott.s106264] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Objective The aim of this study was to address the association between the Ile462Val polymorphism in the gene encoding cytochrome P450 1A1 (CYP1A1) and the risk of head and neck cancer (HNC). Materials and methods The Medline/PubMed, EMBASE, and Web of Science databases were searched. The strength of the association was evaluated by calculating the odds ratio (OR) with a 95% confidence interval (CI). Results Overall, we observed an increased risk of HNC in patients with the Ile/Val+Val/Val genotype compared to those with the Ile/Ile genotype among the 6,367 cases and 6,395 controls evaluated in the 34 eligible studies, with a pooled OR of 1.284 (95% CI: 1.119–1.473). In addition, we observed an increased risk of HNC in patients with the Ile/Val+Val/Val genotype compared to those with the Ile/Ile genotype in the subgroup analyses (OR =1.362, 95% CI: 1.102–1.685 for laryngeal cancer; OR =1.519, 95% CI: 1.253–1.843 for pharyngeal cancer; OR =1.371, 95% CI: 1.111–1.693 for Asians; and OR =1.329, 95% CI: 1.138–1.551 for patients in studies using hospital-based controls). Conclusion This cumulative meta-analysis suggests that the CYP1A1 Ile462Val polymorphism might contribute to the risk of HNC, particularly for pharyngeal cancer and laryngeal cancer.
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Affiliation(s)
- Yadong Wang
- Department of Toxicology, Henan Center for Disease Control and Prevention, Zhengzhou, People's Republic of China; Henan Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang, People's Republic of China
| | - Haiyan Yang
- Department of Epidemiology, School of Public Health, Zhengzhou University, Zhengzhou, People's Republic of China
| | - Guangcai Duan
- Henan Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang, People's Republic of China
| | - Haiyu Wang
- Department of Toxicology, Henan Center for Disease Control and Prevention, Zhengzhou, People's Republic of China
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CYP1A1 Ile462Val polymorphism as a risk factor in cervical cancer development in the Polish population. Mol Diagn Ther 2015; 18:445-50. [PMID: 24626963 PMCID: PMC4105588 DOI: 10.1007/s40291-014-0095-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Background and objective There are inconsistent data of the cytochrome P450 1A1 (CYP1A1) Ile462Val (rs1048943) single nuclear polymorphism (SNP) as a genetic susceptibility factor for cervical cancer in various populations. Moreover, little is known about the interaction of this SNP with other risk factors, including contraceptive use, postmenopausal status, parity, and tobacco smoking. Methods Polymerase chain reaction-restriction fragment length polymorphism was used to study the prevalence of the CYP1A1 Ile462Val SNP in women with cervical cancer (n = 456) and controls (n = 495). Results Logistic regression analysis adjusting for age, parity, oral contraceptive use, tobacco smoking, and menopausal status demonstrated that that the CYP1A1 Ile/Val polymorphism was not associated with an increased risk of cervical cancer in all patients. The adjusted odds ratio (OR) for patients with the Ile/Val genotype vs. Ile/Ile genotype was 1.539 (95 % confidence interval [CI] 0.932–2.541, p = 0.091). However, an increase in cervical cancer risk was seen among patients with a positive history of tobacco smoking and parity. The adjusted OR for positive history of tobacco smoking with the Ile/Val vs. Ile/Ile genotypes was 2.978 (95 % CI 1.382–6.418, p = 0.0052). The adjusted OR for parity with the Ile/Val vs. Ile/Ile genotype was 1.739 (95 % CI 1.006–3.009, p = 0.0472). Conclusion Our genetic study suggests that the CYP1A1 Ile462Val SNP may be a risk factor for cervical cancer among patients with a positive history of tobacco smoking and parity.
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