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Kourie HR, Zouein J, Succar B, Mardirossian A, Ahmadieh N, Chouery E, Mehawej C, Jalkh N, kattan J, Nemr E. Genetic Polymorphisms Involved in Bladder Cancer: A Global Review. Oncol Rev 2023; 17:10603. [PMID: 38025894 PMCID: PMC10657888 DOI: 10.3389/or.2023.10603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 10/06/2023] [Indexed: 12/01/2023] Open
Abstract
Bladder cancer (BC) has been associated with genetic susceptibility. Single peptide polymorphisms (SNPs) can modulate BC susceptibility. A literature search was performed covering the period between January 2000 and October 2020. Overall, 334 articles were selected, reporting 455 SNPs located in 244 genes. The selected 455 SNPs were further investigated. All SNPs that were associated with smoking and environmental exposure were excluded from this study. A total of 197 genes and 343 SNPs were found to be associated with BC, among which 177 genes and 291 SNPs had congruent results across all available studies. These genes and SNPs were classified into eight different categories according to their function.
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Affiliation(s)
- Hampig Raphael Kourie
- Hematology-Oncology Department, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
| | - Joseph Zouein
- Hematology-Oncology Department, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
| | - Bahaa Succar
- Hematology-Oncology Department, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
| | - Avedis Mardirossian
- Hematology-Oncology Department, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
| | - Nizar Ahmadieh
- Hematology-Oncology Department, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
| | - Eliane Chouery
- Department of Human Genetics, Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Beirut, Lebanon
| | - Cybel Mehawej
- Department of Human Genetics, Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Beirut, Lebanon
| | - Nadine Jalkh
- Medical Genetics Unit, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
| | - Joseph kattan
- Hematology-Oncology Department, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
| | - Elie Nemr
- Urology Department, Faculty of Medicine, Saint Joseph University, Beirut, Lebanon
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Murakami A, Takeda D, Hirota J, Saito I, Amano-Iga R, Yatagai N, Arimoto S, Kakei Y, Akashi M, Hasegawa T. Relationship of Mitochondrial-Related Protein Expression with the Differentiation, Metastasis, and Poor Prognosis of Oral Squamous Cell Carcinoma. Cancers (Basel) 2023; 15:4071. [PMID: 37627097 PMCID: PMC10452162 DOI: 10.3390/cancers15164071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/09/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
Mitochondrial dysfunction and respiratory function changes have been consistently associated with the initiation and progression of cancer. The purpose of this study was to retrospectively investigate the expression of mitochondrial tumor-suppressor and DNA-repair proteins in patients with oral squamous cell carcinoma (OSCC) and to evaluate the relationship between their expression and prognosis. We enrolled 197 patients with OSCC who underwent surgical resection between August 2013 and October 2018. Clinical, pathological, and epidemiological data were retrospectively collected from hospital records. The expression of peroxisome proliferator-activated receptor gamma coactivator-1α (PGC-1α), mitochondrial transcription factor A, mitochondrial tumor suppressor gene 1, silent information regulator 3, and 8-hydroxyguanine DNA glycosylase was investigated using immunochemistry. The 3-year disease-specific survival (DSS) rates of patients showing positive expression of all selected proteins were significantly higher than those of patients showing a lack of expression. Multivariate analysis revealed that the expression of PGC-1α (hazard ratio, 4.684) and vascular invasion (hazard ratio, 5.690) can predict the DSS rate (p < 0.001). Low PGC-1α expression and vascular invasion are potential clinically effective predictors of the prognosis of OSCC.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan; (A.M.); (D.T.); (S.A.); (Y.K.); (M.A.)
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3
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Shelke S, Das B. Radio-adaptive response and correlation of non-homologous end joining repair gene polymorphisms [XRRC5 (3R/2R/1R/0R), XRCC6(C/G) and XRCC7 (G/T)] in human peripheral blood mononuclear cells exposed to gamma radiation. Genes Environ 2021; 43:9. [PMID: 33685509 PMCID: PMC7938547 DOI: 10.1186/s41021-021-00176-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Accepted: 02/05/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Radio-adaptive response (RAR) is transient phenomena, where cells conditioned with a small dose (priming) of ionizing radiation shows significantly reduced DNA damage with a subsequent high challenging dose. The role of DNA double strand break repair gene polymorphism in RAR is not known. In the present study attempt was made to find out the influence of NHEJ repair gene polymorphisms [a VNTR; XRCC5 (3R/2R/1R/0R); two single nucleotide polymorphisms (SNPs); XRCC6 (C/G) and XRCC7 (G/T)] with DNA damage, repair and mRNA expression in human PBMCs in dose and adaptive response studies. Genomic DNA extracted from venous blood samples of 20 random healthy donors (16 adaptive and 4 non-adaptive) and genotyping of NHEJ repair genes was carried out using PCR amplified length polymorphism. RESULTS The dose response study revealed significant positive correlation of genotypes at XRRC5 (3R/2R/1R/0R), XRCC6(C/G) and XRCC7 (G/T) with DNA damage. Donors having genotypes with 2R allele at XRCC5 showed significant positive correlation with mRNA expression level (0R/2R: r = 0.846, P = 0.034; 1R/2R: r = 0.698, P = 0.0001 and 2R/2R: r = 0.831, P = 0.0001) for dose response. Genotypes C/C and C/G of XRCC6 showed a significant positive correlation (P = 0.0001), whereas, genotype T/T of XRCC7 showed significant negative correlation (r = - 0.376, P = 0.041) with mRNA expression. CONCLUSION Interestingly, adaptive donors having C/G genotype of XRCC6 showed significantly higher (P < 0.05) mRNA expression level in primed cells suggesting their role in RAR. In addition, NHEJ repair gene polymorphisms play crucial role with radio-sensitivity and RAR in human PBMCs.
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Affiliation(s)
- Shridevi Shelke
- Low Level Radiation Research Section, Radiation Biology & Health Sciences Division, Bio-Sciences Group, Bhabha Atomic Research Centre, Trombay, Mumbai, 400 085, India
| | - Birajalaxmi Das
- Low Level Radiation Research Section, Radiation Biology & Health Sciences Division, Bio-Sciences Group, Bhabha Atomic Research Centre, Trombay, Mumbai, 400 085, India.
- Homi Bhabha National Institute (HBNI), Anushaktinagar, Mumbai, 400094, India.
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Aboul Enein AA, Khaled IAA, Khorshied MM, Abdel-Aziz AO, Zahran N, El Saeed AM, Shousha HI, Abdel Rahman HA. Genetic variations in DNA-repair genes (XRCC1, 3, and 7) and the susceptibility to hepatocellular carcinoma in a cohort of Egyptians. J Med Virol 2020; 92:3609-3616. [PMID: 32281666 DOI: 10.1002/jmv.25873] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/26/2020] [Accepted: 03/27/2020] [Indexed: 01/01/2023]
Abstract
Chronic hepatitis C (CHC) is a worldwide etiology of chronic hepatic insult particularly in Egypt. DNA-repair systems are responsible for maintaining genomic integrity by countering threats posed by DNA lesions. Deficiency in the repair capacity due to genetic alterations in DNA-repair genes can lead to genomic instability and increased risk of cancer development. The present work aimed at studying the possible association between XRCC1-G28152A (rs25487), XRCC3-C18067T (rs861539), and XRCC7-G6721T (rs7003908) single nucleotide polymorphisms (SNPs) and the susceptibility to hepatocellular carcinoma (HCC) in Egyptian population. The study was conducted on 100 newly diagnosed HCC patients and 100 age- and sex-matched healthy controls. Laboratory workup revealed that all HCC patients have chronic hepatitis C viral infection. Genotyping of the studied SNPs was performed by real-time PCR. The heteromutant genotype of XRCC1 (GA) conferred an almost two-fold increased risk of HCC (OR , 2.35; 95% CI, 1.33-4.04). Regarding XRCC7, the heteromutant (TG) genotype conferred a two-fold increased risk of HCC (OR , 2.17; 95% CI, 1.23-3.82). Coinheritance of the polymorphic genotypes of XRCC1 and 7 was significantly higher in HCC cases than controls and was associated with an 11-fold increased risk of HCC (OR , 11.66; 95% CI, 2.77-49.13). The frequency of XRCC3 polymorphic genotypes in HCC patients was close to that of the controls.
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Affiliation(s)
- Azza Ahmed Aboul Enein
- Department of Clinical and Chemical Pathology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Iman Abdel Aziz Khaled
- Department of Clinical and Chemical Pathology, Theoder Bilharz Research Institute, Cairo, Egypt
| | - Mervat Mamdooh Khorshied
- Department of Clinical and Chemical Pathology, Faculty of Medicine, Cairo University, Cairo, Egypt
| | | | - Nariman Zahran
- Department of Clinical and Chemical Pathology, Theoder Bilharz Research Institute, Cairo, Egypt
| | - Asmaa Mohamed El Saeed
- Department of Clinical and Chemical Pathology, Theoder Bilharz Research Institute, Cairo, Egypt
| | - Hend Ibrahim Shousha
- Department of Tropical Medicine, Faculty of Medicine, Cairo University, Cairo, Egypt
| | - Hala Aly Abdel Rahman
- Department of Clinical and Chemical Pathology, Faculty of Medicine, Cairo University, Cairo, Egypt
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Lipunova N, Wesselius A, Cheng KK, van Schooten FJ, Cazier JB, Bryan RT, Zeegers MP. Systematic Review: Genetic Associations for Prognostic Factors of Urinary Bladder Cancer. BIOMARKERS IN CANCER 2019; 11:1179299X19897255. [PMID: 31908559 PMCID: PMC6937527 DOI: 10.1177/1179299x19897255] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Accepted: 12/03/2019] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Many germline associations have been reported for urinary bladder cancer (UBC) outcomes and prognostic characteristics. It is unclear whether there are overlapping genetic patterns for various prognostic endpoints. We aimed to review contemporary literature on genetic associations with UBC prognostic outcomes and to identify potential overlap in reported genes. METHODS EMBASE, MEDLINE, and PubMed databases were queried for relevant articles in English language without date restrictions. The initial search identified 1346 articles. After exclusions, 112 studies have been summarized. Cumulatively, 316 single-nucleotide polymorphisms (SNPs) were reported across prognostic outcomes (recurrence, progression, death) and characteristics (tumor stage, grade, size, age, risk group). There were considerable differences between studied outcomes in the context of genetic associations. The most commonly reported SNPs were located in OGG1, TP53, and MDM2. For outcomes with the highest number of reported associations (ie, recurrence and death), functional enrichment annotation yields different terms, potentially indicating separate biological mechanisms. CONCLUSIONS Our study suggests that all UBC prognostic outcomes may have different biological origins with limited overlap. Further validation of these observations is essential to target a phenotype that could best predict patient outcome and advance current management practices.
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Affiliation(s)
- Nadezda Lipunova
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK
- Department of Complex Genetics, Maastricht University, Maastricht, The Netherlands
- Centre for Computational Biology, University of Birmingham, Birmingham, UK
| | - Anke Wesselius
- Department of Complex Genetics, Maastricht University, Maastricht, The Netherlands
| | - Kar K Cheng
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | | | - Jean-Baptiste Cazier
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK
- Centre for Computational Biology, University of Birmingham, Birmingham, UK
| | - Richard T Bryan
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK
| | - Maurice P Zeegers
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK
- Department of Complex Genetics, Maastricht University, Maastricht, The Netherlands
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Influence of Caspase-9 polymorphisms on the development of Chronic Myeloid Leukemia- A case-control study. Gene 2019; 721S:100002. [PMID: 34530993 PMCID: PMC7286081 DOI: 10.1016/j.gene.2018.100002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 11/30/2018] [Indexed: 11/22/2022]
Abstract
Introduction Chronic Myeloid Leukemia (CML) is a myeloproliferative disorder, characterized by the overproduction of myeloid cells in all stages of maturation. It is usually defined by three sequential stages (Chronic, Accelerated and Blast-crisis) where the transition from chronic to accelerated to blast phases is presumed to occur due to secondary genetic changes, viz. accumulation of mutations, activation of downstream pathways and failure of apoptosis. Caspase 9 is the initiator caspase involved in mitochondrial-mediated apoptotic pathway. Polymorphisms in the promoter (−1263 A>G, -712C>T, -293 del) and coding (Ex5 +32G>A) regions of CASP9 gene are found to influence the expression levels by either impairing the activation or loss of expression of CASP9 or insufficient formation of apoptosome. Methods The present case-control study was carried out on 999 individuals, comprised of 485CML cases reported at Nizams Institute of Medical Sciences (NIMS), Hyderabad and 514 age and gender-matched healthy individuals from local population. DNA was isolated by non-enzymatic/salting-out method and was genotyped using RFLP technique. Results It was observed that the presence of G allele of CASP9 -1263A>G polymorphism enhanced the risk for CML while CASP9 -712C>T and CASP9 -293del SNPs conferred protection against development of CML. Haplotype analysis of promoter and exonic polymorphisms had revealed increased risk associated with two haplotypes G_C_del (+)_G (OR-1.61, 95% CI-0.97-2.65, p-0.06#) and G_C_del (–)_G (OR-2.09, 95% CI-0.94-4.66, p-0.07#) suggesting the role of G allele of CASP9 -1263A>G in conferring risk independent of other SNPs. Pairwise LD analysis performed for all the four SNPs revealed the presence of LD among the SNPs. Conclusion The results of the present study therefore concludes the role of CASP9 -1263A>G polymorphism in increasing the risk for the development and progression while CASP9 -712C>T and CASP9 -293del SNPs conferred protection and CASP9 Ex5 +32G>A was involved in conferring resistance which could be in combination with other SNPs or factors affecting them.
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7
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Kang SW, Kim SK, Park HJ, Chung JH, Ban JY. Human 8-oxoguanine DNA glycosylase gene polymorphism (Ser326Cys) and cancer risk: updated meta-analysis. Oncotarget 2018; 8:44761-44775. [PMID: 28415770 PMCID: PMC5546516 DOI: 10.18632/oncotarget.16226] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 03/03/2017] [Indexed: 01/30/2023] Open
Abstract
Genetic polymorphism of human 8-oxoguanine glycosylase 1 (hOGG1) has been reported to have a relationship with the risk of the development of various cancers. Many studies have described the influence of Ser326Cys polymorphism of the hOGG1 gene on cancer susceptibility. However, the results have remained inconclusive and controversial. Therefore, we performed a meta-analysis to more precisely determine the relationship between the hOGG1 polymorphism and the development of cancer.Electronic databases including PubMed, Embase, Google Scholar, and the Korean Studies Information Service System (KISS) were searched. The odds ratio (OR), 95% confidence interval (CI), and p value were calculated to assess the strength of the association with the risk of cancer using Comprehensive Meta-analysis software (Corporation, NJ, USA). The 127 studies including 38,757 cancer patients and 50,177 control subjects were analyzed for the meta-analysis.Our meta-analysis revealed that G allele of Ser326Cys polymorphism of the hOGG1 gene statistically increased the susceptibility of cancer (all population, OR = 1.092, 95% CI = 1.051-1.134, p < 0.001; in Asian, OR = 1.095, 95% CI = 1.048-1.145, p < 0.001; in Caucasian, OR = 1.097, 95% CI = 1.033-1.179, p = 0.002). Also, other genotype models showed significant association with cancer (p < 0.05, respectively).The present meta-analysis concluded that the G allele was associated with an increased risk of cancer. It suggested that the hOGG1 polymorphism may be a candidate marker of cancer.
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Affiliation(s)
- Sang Wook Kang
- Department of Dental Pharmacology, School of Dentistry, Dankook University, Cheonan, Republic of Korea
| | - Su Kang Kim
- Kohwang Medical Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Hae Jeong Park
- Kohwang Medical Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Joo-Ho Chung
- Kohwang Medical Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Ju Yeon Ban
- Department of Dental Pharmacology, School of Dentistry, Dankook University, Cheonan, Republic of Korea
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Hu M, Du J, Cui L, Huang T, Guo X, Zhao Y, Ma X, Jin T, Li G, Song J. IL-10 and PRKDC polymorphisms are associated with glioma patient survival. Oncotarget 2018; 7:80680-80687. [PMID: 27811370 PMCID: PMC5348348 DOI: 10.18632/oncotarget.13028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 10/24/2016] [Indexed: 12/14/2022] Open
Abstract
Interleukin-10 (IL-10) and DNA repair gene PRKDC mutations are implicated in the development of multiple human cancers, including glioma. We investigated associations between IL-10 and PRKDC gene polymorphisms and prognosis in low- and high-grade glioma patients. We analyzed the associations of one IL-10 and one PRKDC single nucleotide polymorphism with patient clinical factors in 481 glioma patients using Cox proportional hazard models and Kaplan-Meier curves. We also assessed associations between patient clinical characteristics and prognosis. Our data showed that the extent of tumor resection (gross-total resection) and application of chemotherapy were associated with improved patient outcomes in all glioma cases. Additionally, univariate (Log-rank p = 0.019) and multivariate Cox regression analyses (p = 0.022) showed that the IL-10 rs1800871 C/T genotype correlates with improved overall survival in cases of low-grade glioma, whereas the PRKDC rs7003908 C/C genotype correlated with reduced overall and progression-free survival in high-grade glioma patients in univariate (Log-rank p = 0.000 and p = 0.000, respectively) and multivariate Cox regression analyses (p = 0.001; p = 0.002, respectively). These results suggest that IL-10 rs1800871 and PRKDC rs7003908 may be useful biomarkers for predicting glioma patient outcome. Further functional studies are needed to evaluate the mechanisms by which these polymorphisms affect glioma progression.
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Affiliation(s)
- Mingjun Hu
- Department of Neurosurgery, First Affiliated Hospital of Medical College, Xi'an Jiaotong University, Xi'an 710061, China.,Department of Neurosurgery, Xi'an First Hospital, Xi'an 710002, China
| | - Jieli Du
- Inner Mongolia Medical University, Hohhot, Inner Mongolia, 010050, China.,Department of Orthopedics and Traumatology, The 2nd Affiliated Hospital of Inner Mongolia University, Hohhot, Inner Mongolia, 010030, China
| | - Lihong Cui
- Department of Neurology, Shangluo Central Hospital, Shangluo 726000, China
| | - Tingqin Huang
- Department of Neurosurgery, First Affiliated Hospital of Medical College, Xi'an Jiaotong University, Xi'an 710061, China
| | - Xiaoye Guo
- Department of Neurosurgery, First Affiliated Hospital of Medical College, Xi'an Jiaotong University, Xi'an 710061, China
| | - Yonglin Zhao
- Department of Neurosurgery, First Affiliated Hospital of Medical College, Xi'an Jiaotong University, Xi'an 710061, China
| | - Xudong Ma
- Department of Neurosurgery, First Affiliated Hospital of Medical College, Xi'an Jiaotong University, Xi'an 710061, China
| | - Tianbo Jin
- Key Laboratory of Resource Biology and Biotechnology in Western China, Northwest University, Ministry of Education, School of Life Sciences, Northwest University, Xi'an 710069, China
| | - Gang Li
- Department of Neurosurgery, Tangdu Hospital, The Fourth Military Medical University, Xi'an 710038, China
| | - Jinning Song
- Department of Neurosurgery, First Affiliated Hospital of Medical College, Xi'an Jiaotong University, Xi'an 710061, China
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Ahmed T, Nawaz S, Noreen R, Bangash KS, Rauf A, Younis M, Anwar K, Khawaja MA, Azam M, Qureshi AA, Akhter S, Kiemeney LA, Qamar R, Ali SHB. A 3' untranslated region polymorphism rs2304277 in the DNA repair pathway gene OGG1 is a novel risk modulator for urothelial bladder carcinoma. Ann Hum Genet 2017; 82:74-87. [PMID: 29139108 DOI: 10.1111/ahg.12225] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 08/30/2017] [Accepted: 09/16/2017] [Indexed: 12/14/2022]
Abstract
Altered DNA repair capacity may affect an individual's susceptibility to cancers due to compromised genomic integrity. This study was designed to elucidate the association of selected polymorphisms in DNA repair genes with urothelial bladder carcinoma (UBC). OGG1 rs1052133 and rs2304277, XRCC1 rs1799782 and rs25487, XRCC3 rs861539, XPC rs2228001, and XPD rs13181 were genotyped using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) in 200 UBC cases and 200 controls. We found association of OGG1 rs2304277 [odds ratio (OR)GG = 3.55, 95% confidence interval (CI) = 1.79-7.06] and XPC rs2228001 (ORAC = 2.38, 95% CI = 1.43-3.94) with UBC. In stratified analysis with respect to smoking status, OGG1 rs2304277 and XPC rs2228001 exhibited increased risk in smokers [(rs2304277 ORGG = 4.96, 95% CI = 1.51-16.30) (rs2228001 ORAC = 2.19, 95% CI = 1.02-4.72)] as well as nonsmokers [(rs2304277 ORGG = 2.95, 95% CI = 1.26-6.90) (rs2228001 ORAC = 2.57, 95% CI = 1.31-5.04)]. These polymorphisms were also associated with both low-grade [(rs2304277 ORGG = 3.73, 95% CI = 1.72-8.09) (rs2228001 ORAC = 2.18, 95% CI = 1.21-3.92)] and high-grade tumors [(rs2304277 ORGG = 3.45, 95% CI = 1.52-7.80) (rs2228001 ORAC = 2.81, 95% CI = 1.48-5.33)] as well as with non-muscle-invasive bladder cancer [(rs2304277 ORGG = 4.03, 95% CI = 1.87-8.67) (rs2228001 ORAC = 2.14, 95% CI = 1.20-3.81)] and muscle-invasive bladder cancer [(rs2304277 ORGG = 3.06, 95%CI = 1.31-7.13) (rs2228001 ORAC = 2.95, 95%CI = 1.51-5.75)]. This is the first study on DNA repair gene polymorphisms and UBC in the Pakistani population. It identifies OGG1 rs2304277 and replicates XPC rs2228001 as significant modulators of UBC susceptibility.
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Affiliation(s)
- Tayyaba Ahmed
- Department of Biosciences, COMSATS Institute of Information Technology, Islamabad, Pakistan
| | - Saira Nawaz
- Bahauddin Zakariya University, Multan, Pakistan
| | | | | | - Abdur Rauf
- Nishtar Medical College & Hospital, Multan, Pakistan
| | | | - Khursheed Anwar
- Pakistan Atomic Energy Commission General Hospital, Islamabad, Pakistan
| | | | - Maleeha Azam
- Department of Biosciences, COMSATS Institute of Information Technology, Islamabad, Pakistan
| | - Abid Ali Qureshi
- Department of Radiology, The Children's Hospital & The Institute of Child Health, Lahore, Pakistan
| | - Saeed Akhter
- Department of Urology, Shifa International Hospital, Islamabad, Pakistan
| | - Lambertus A Kiemeney
- Radboud university medical center, Radboud Institute for Health Sciences, Nijmegen, Rhe Netherlands
| | - Raheel Qamar
- Department of Biosciences, COMSATS Institute of Information Technology, Islamabad, Pakistan.,Pakistan Academy of Sciences, Islamabad, Pakistan
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Zhang M, Li W, Hao Z, Zhou J, Zhang L, Liang C. Association Between Twelve Polymorphisms in Five X-ray Repair Cross-complementing Genes and the Risk of Urological Neoplasms: A Systematic Review and Meta-Analysis. EBioMedicine 2017; 18:94-108. [PMID: 28330811 PMCID: PMC5405151 DOI: 10.1016/j.ebiom.2017.03.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 03/07/2017] [Accepted: 03/07/2017] [Indexed: 01/03/2023] Open
Abstract
Polymorphisms in X-ray repair cross-complementing (XRCC) genes have been implicated in altering the risk of various urological cancers. However, the results of reported studies are controversial. To ascertain whether polymorphisms in XRCC genes are associated with the risk of urological neoplasms, we conducted present updated meta-analysis and systematic review. Summary odds ratios (ORs) and corresponding 95% confidence intervals (CIs) were used to estimate the association. Finally, 54 publications comprising 129 case-control studies for twelve polymorphisms in five XRCC genes were enrolled. We identified that XRCC1-rs25489 polymorphism was associated with an increased risk of urological neoplasms in heterozygote and dominant models. Moreover, in the subgroup analysis by cancer type, we found that XRCC1-rs25489 polymorphism was associated with an increased risk of bladder cancer (BC) in heterozygote model. Although overall analyses suggested a null result for XRCC1-rs25487 polymorphism, in the stratified analysis by ethnicity, an increased risk of urological neoplasms for Asians in allelic and homozygote models was identified. While for other polymorphisms in XRCC genes, no significant association was uncovered. To sum up, our results indicated that XRCC1-rs25489 polymorphism is a risk factor for urological neoplasms, particularly for BC. Further studies with large sample size are needed to validate these findings.
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Affiliation(s)
- Meng Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China; Institute of Urology, Anhui Medical University, Hefei, China; Graduate School of Anhui Medical University, Hefei, China
| | - Wanzhen Li
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China; Institute of Urology, Anhui Medical University, Hefei, China; Graduate School of Anhui Medical University, Hefei, China
| | - Zongyao Hao
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China; Institute of Urology, Anhui Medical University, Hefei, China; Graduate School of Anhui Medical University, Hefei, China
| | - Jun Zhou
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China; Institute of Urology, Anhui Medical University, Hefei, China; Graduate School of Anhui Medical University, Hefei, China
| | - Li Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China; Institute of Urology, Anhui Medical University, Hefei, China; Graduate School of Anhui Medical University, Hefei, China.
| | - Chaozhao Liang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China; Institute of Urology, Anhui Medical University, Hefei, China; Graduate School of Anhui Medical University, Hefei, China.
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11
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DNA repair gene XRCC7 G6721T variant and susceptibility to colorectal cancer. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2016. [DOI: 10.1016/j.ejmhg.2016.02.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Romanowicz H, Pyziak Ł, Jabłoński F, Bryś M, Forma E, Smolarz B. Analysis of DNA Repair Genes Polymorphisms in Breast Cancer. Pathol Oncol Res 2016; 23:117-123. [PMID: 27571987 DOI: 10.1007/s12253-016-0110-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Accepted: 08/24/2016] [Indexed: 10/21/2022]
Abstract
Genetic polymorphisms in the DNA repair genes may be associated with increased cancer risk. The purpose of this study was to evaluate the association of the DNA repair genes polymorphisms with the risk of breast cancer development. The study included 200 breast cancer patients and 200 healthy controls. The following polymorphisms were studied: C/G (Ser326Cys, rs1052133) of the hOGG1, A/C (IVS5 + 33, rs3212961) of the ERCC1, A/C (Lys939Gln, rs2228001) of the XPC, C/T (Thr241Met, rs861539) of the XRCC3, G/T (Leu787Leu, rs1800392) of the WRN and G/T (Ser307Ser, rs1056503) of the XRCC4 gene. Presented study showed statistically significant increase in the breast cancer development risk of the G/G hOGG1 genotype (OR 8.13; 95 % CI, 4.37-15.14; p < 0.001) and for the G hOGG1 allele (OR 5.11; 95 % CI, 3.69-7.06; p < 0.001), as well as for the C/C ERCC1 genotype (OR 10.61; 95 % CI, 5.72-19.69; p < 0.001) and the C ERCC1 allele (OR 4.66; 95 % CI, 3.43-6.34; p < 0.001) in patients with breast cancer in comparison with healthy control group. We also observed positive association of the C/C XPC genotype (OR 3.80; 95 % CI, 2.27-6.38; p < 0.001) as well as the C XPC allele occurrence with an increased breast cancer development risk (OR 2.65; 95 % CI, 1.98-3.55; p < 0.001). Furthermore, we found an association of the G/T WRN gene polymorphism with increased risk of carcinoma. The hOGG1, ERCC1, XPC and WRN genes polymorphisms may be related to development of breast cancer.
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Affiliation(s)
- Hanna Romanowicz
- Laboratory of Cancer Genetics, Department of Pathology, Institute of Polish Mother's Memorial Hospital, Rzgowska 281/289, 93-338, Lodz, Poland.
| | - Łukasz Pyziak
- Laboratory of Cancer Genetics, Department of Pathology, Institute of Polish Mother's Memorial Hospital, Rzgowska 281/289, 93-338, Lodz, Poland
| | - Filip Jabłoński
- Laboratory of Cancer Genetics, Department of Pathology, Institute of Polish Mother's Memorial Hospital, Rzgowska 281/289, 93-338, Lodz, Poland
| | - Magdalena Bryś
- Department of Cytobiochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-237, Lodz, Poland
| | - Ewa Forma
- Department of Cytobiochemistry, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-237, Lodz, Poland
| | - Beata Smolarz
- Laboratory of Cancer Genetics, Department of Pathology, Institute of Polish Mother's Memorial Hospital, Rzgowska 281/289, 93-338, Lodz, Poland
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Zou H, Li Q, Xia W, Liu Y, Wei X, Wang D. Association between the OGG1 Ser326Cys Polymorphism and Cancer Risk: Evidence from 152 Case-Control Studies. J Cancer 2016; 7:1273-80. [PMID: 27390603 PMCID: PMC4934036 DOI: 10.7150/jca.15035] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 04/26/2016] [Indexed: 01/14/2023] Open
Abstract
Although it has been suggested that the 8-oxoguanine DNA glycosylase (OGG1) gene Ser326Cys polymorphism may be a risk factor for cancer, the conclusions from previous studies are inconsistent. Thus, we conducted an updated meta-analysis to estimate the effect of OGG1 variant genotypes on cancer susceptibility. We searched the PubMed for all eligible studies published in English for the period ending September 2014. We found the association between OGG1 Ser326Cys polymorphism and cancer susceptibility based on 152 case-control studies in different genetic model comparisons (dominant model: OR = 1.053, P = 0.018; recessive model: OR = 1.108, P < 0.001; homozygote: OR = 1.135, P < 0.001; additive model: OR = 1.059, P < 0.001). However, the results from the subgroup analyses based on types of cancer, health population as controls or studies with relatively large sample size did not support the conclusion. Although the overall results of this meta-analysis showed a positive association between OGG1 variant genotypes and cancer susceptibility, the subgroup analyses by cancer type, sample size, and source of controls presented inconsistent results. Therefore, the current evidence from the meta-analysis did not support the hypothesis of OGG1 Ser326Cys polymorphism as a risk factor of cancer.
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Affiliation(s)
- Hua Zou
- 1. Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
| | - Qing Li
- 1. Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
| | - Wei Xia
- 1. Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
| | - Yong Liu
- 3. Intensive care unit, Suining Central Hospital, Deshengxi Road 127, Chuanshan District, Suining, Sichuan 629000, China
| | - Xi Wei
- 2. Department of Diagnostic and Therapeutic Ultrasonography, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center of Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Dong Wang
- 1. Cancer Center, Daping Hospital and Research Institute of Surgery, Third Military Medical University, Chongqing 400042, China
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Huang CY, Pu YS, Shiue HS, Chen WJ, Lin YC, Hsueh YM. Polymorphisms of human 8-oxoguanine DNA glycosylase 1 and 8-hydroxydeoxyguanosine increase susceptibility to arsenic methylation capacity-related urothelial carcinoma. Arch Toxicol 2015; 90:1917-27. [PMID: 26359225 DOI: 10.1007/s00204-015-1590-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 08/31/2015] [Indexed: 01/15/2023]
Abstract
Arsenic causes oxidative stress in cultured animal and human cells, and it is a well-documented human carcinogen. We conducted a hospital-based case-control study including 167 cases of urothelial carcinoma (UC) and 334 age- and gender-matched healthy controls to evaluate the relationships between urinary arsenic profiles, urinary 8-hydroxydeoxyguanosine (8-OHdG) levels, and human 8-oxoguanine DNA glycosylase (hOGG1) genotypes and UC. The urinary arsenic species were analyzed by high-performance liquid chromatography and hydride generator-atomic absorption spectrometry. Genotyping for hOGG1 (Ser326Cys) and hOGG1 (-15C>G) was performed using the Sequenom MassARRAY platform with iPLEX Gold chemistry. Urinary 8-OHdG was measured with high-sensitivity enzyme-linked immunosorbent assay kits. The results indicated that the hOGG1 326 Cys/Cys genotype and the hOGG1 -15C>G G/G genotype were associated with an increased risk of UC (OR [95 % CI] 1.57 [1.04-2.35] and 1.57 [1.04-2.35], respectively). Participants with high urinary total arsenic, regardless of the haplotype of hOGG1 Ser326Cys and the -15C>G polymorphism, had significantly higher urinary 8-OHdG compared to participants with low urinary total arsenic. This is the first study to investigate the joint effects of high urinary total arsenic or inefficient arsenic methylation capacity indices, and the high-risk G-G haplotype of hOGG1 on the risk of UC. The findings are especially meaningful for participants with risk factors such as high urinary total arsenic, inefficient arsenic methylation indices, high urinary 8-OHdG, and the high-risk G-G haplotype of hOGG1 which are all associated with an increased UC risk.
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Affiliation(s)
- Chao-Yuan Huang
- Department of Urology, National Taiwan University Hospital, College of Medicine National Taiwan University, Taipei, Taiwan
| | - Yeong-Shiau Pu
- Department of Urology, National Taiwan University Hospital, College of Medicine National Taiwan University, Taipei, Taiwan
| | - Horng-Sheng Shiue
- Department of Chinese Medicine, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Wei-Jen Chen
- School of Public Health, College of Public Health and Nutrition, Taipei Medical University, Taipei, Taiwan
| | - Ying-Chin Lin
- Department of Family Medicine, Shung Ho Hospital, Taipei Medical University, Taipei, Taiwan.,Department of Health Examination, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.,Division of Family Medicine, School of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yu-Mei Hsueh
- School of Public Health, College of Public Health and Nutrition, Taipei Medical University, Taipei, Taiwan. .,Department of Public Health, School of Medicine, College of Medicine, Taipei Medical University, No. 250 Wu-Hsing Street, Taipei 110, Taiwan.
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Edwards SK, Ono T, Wang S, Jiang W, Franzini RM, Jung JW, Chan KM, Kool ET. In Vitro Fluorogenic Real-Time Assay of the Repair of Oxidative DNA Damage. Chembiochem 2015; 16:1637-46. [PMID: 26073452 PMCID: PMC4586133 DOI: 10.1002/cbic.201500184] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Indexed: 01/09/2023]
Abstract
The repair of oxidative damage to DNA is essential to avoid mutations that lead to cancer. Oxidized DNA bases, such as 8-oxoguanine, are a main source of these mutations, and the enzyme 8-oxoguanine glycosylase 1 (OGG1) is the chief human enzyme that excises 8-oxoguanine from DNA. The activity of OGG1 has been linked to human inflammation responses and to cancer, and researchers are beginning to search for inhibitors of the enzyme. However, measuring the activity of the enzyme typically requires laborious gel-based measurements of radiolabeled DNAs. Here we report the design and properties of fluorogenic probes that directly report on the activity of OGG1 (and its bacterial homologue Fpg) in real time as the oxidized base is excised. The probes are short, modified DNA oligomers containing fluorescent DNA bases and are designed to utilize 8-oxoguanine itself as a fluorescence quencher. Screening of combinations of fluorophores and 8-oxoguanine revealed two fluorophores, pyrene and tCo, that are strongly quenched by the damaged base. We tested 42 potential probes containing these fluorophores: the optimum probe, OGR1, yields a 60-fold light-up signal in vitro with OGG1 and Fpg. It can report on oxidative repair activity in mammalian cell lysate and with bacterial cells overexpressing a repair enzyme. Such probes might prove useful in quantifying enzyme activity and performing competitive inhibition assays.
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Affiliation(s)
- Sarah K Edwards
- Department of Chemistry, Stanford University, Stanford, CA 94305 (USA)
| | - Toshikazu Ono
- Department of Chemistry, Stanford University, Stanford, CA 94305 (USA)
- Present Address: Department of Chemistry and Biochemistry, Graduate School of Engineering, Center for Molecular Systems (CMS), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395 (Japan)
| | - Shenliang Wang
- Department of Chemistry, Stanford University, Stanford, CA 94305 (USA)
| | - Wei Jiang
- Department of Chemistry, Stanford University, Stanford, CA 94305 (USA)
| | | | - Jong Wha Jung
- Department of Chemistry, Stanford University, Stanford, CA 94305 (USA)
- Present Address: College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, Daegu, 702-701 (Republic of Korea)
| | - Ke Min Chan
- Department of Chemistry, Stanford University, Stanford, CA 94305 (USA)
| | - Eric T Kool
- Department of Chemistry, Stanford University, Stanford, CA 94305 (USA).
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Ali K, Mahjabeen I, Sabir M, Mehmood H, Kayani MA. OGG1 Mutations and Risk of Female Breast Cancer: Meta-Analysis and Experimental Data. DISEASE MARKERS 2015; 2015:690878. [PMID: 26089588 PMCID: PMC4452349 DOI: 10.1155/2015/690878] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 04/09/2015] [Indexed: 01/10/2023]
Abstract
In first part of this study association between OGG1 polymorphisms and breast cancer susceptibility was explored by meta-analysis. Second part of the study involved 925 subjects, used for mutational analysis of OGG1 gene using PCR-SSCP and sequencing. Fifteen mutations were observed, which included five intronic mutations, four splice site mutations, two 3'UTR mutations, three missense mutations, and a nonsense mutation. Significantly (p < 0.001) increased (~29 fold) breast cancer risk was associated with a splice site variant g.9800972T>G and 3'UTR variant g.9798848G>A. Among intronic mutations, highest (~15 fold) increase in breast cancer risk was associated with g.9793680G>A (p < 0.009). Similarly ~14-fold increased risk was associated with Val159Gly (p < 0.01), ~17-fold with Gly221Arg (p < 0.005), and ~18-fold with Ser326Cys (p < 0.004) in breast cancer patients compared with controls, whereas analysis of nonsense mutation showed that ~13-fold (p < 0.01) increased breast cancer risk was associated with Trp375STOP in patients compared to controls. In conclusion, a significant association was observed between OGG1 germ line mutations and breast cancer risk. These findings provide evidence that OGG1 may prove to be a good candidate of better diagnosis, treatment, and prevention of breast cancer.
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Affiliation(s)
- Kashif Ali
- Cancer Genetics Laboratory, Department of Biosciences, COMSATS Institute of Information Technology, Park Road, Chak Shahzad, Islamabad 44000, Pakistan
| | - Ishrat Mahjabeen
- Cancer Genetics Laboratory, Department of Biosciences, COMSATS Institute of Information Technology, Park Road, Chak Shahzad, Islamabad 44000, Pakistan
| | - Maimoona Sabir
- Cancer Genetics Laboratory, Department of Biosciences, COMSATS Institute of Information Technology, Park Road, Chak Shahzad, Islamabad 44000, Pakistan
| | - Humera Mehmood
- Nuclear Medicine Oncology & Radiotherapy Institute (NORI), Islamabad 44000, Pakistan
| | - Mahmood Akhtar Kayani
- Cancer Genetics Laboratory, Department of Biosciences, COMSATS Institute of Information Technology, Park Road, Chak Shahzad, Islamabad 44000, Pakistan
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Hsieh YH, Chang WS, Tsai CW, Tsai JP, Hsu CM, Jeng LB, Bau DT. DNA double-strand break repair gene XRCC7 genotypes were associated with hepatocellular carcinoma risk in Taiwanese males and alcohol drinkers. Tumour Biol 2015; 36:4101-6. [PMID: 25944161 DOI: 10.1007/s13277-014-2934-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Accepted: 12/03/2014] [Indexed: 12/23/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the fifth most common cancer worldwide, the prevalence and mortality rates of which are very high in Taiwan. The study aimed at evaluating the contribution of XRCC7 G6721T, together with cigarette smoking and alcohol drinking lifestyles, to the risk of HCC. In this hospital-based case-control study, the association of XRCC7 single nucleotide polymorphism G6721T with HCC risk was examined by polymerase chain reaction (PCR)-restriction fragment length polymorphism (RFLP) among 298 HCC patients and 889 age- and gender-matched healthy controls. The results showed that the percentages of TT, GT, and GG XRCC7 G6721T were 53.0, 41.3, and 5.7 % in the HCC patient group and 48.9, 43.1, and 8.0 % in the non-cancer control group, respectively. We have further stratified the populations by genders, cigarette smoking, and alcohol drinking status to investigate their combinative contributions with XRCC7 G6721T genotype to HCC risk. The results showed that the GG genotype of XRCC7 G6721T conducted a protective effect on HCC susceptibility which was obvious among males and drinkers, but not females, smokers, non-smokers, or non-drinkers (p = 0.0058, 0.0069, 0.1564, 0.2469, 0.9354, and 0.3416, respectively). Our results suggested that the GG and GT genotypes of X-ray repair cross-complementing group 7 (XRCC7) G6721T had no effect on HCC risk to the whole population, but had a protective effect on HCC risk among males and alcohol drinkers.
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Affiliation(s)
- Yi-Hsien Hsieh
- Department of Biochemistry, School of Medicine, Chung Shan Medical University, Taichung, Taiwan, Republic of China
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A systematic review and meta-analysis of the association between OGG1 Ser326Cys polymorphism and cancers. Med Oncol 2015; 32:472. [DOI: 10.1007/s12032-014-0472-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 12/18/2014] [Indexed: 12/26/2022]
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Ke Y, Lv Z, Yang X, Zhang J, Huang J, Wu S, Li YR. Compensatory effects of hOGG1 for hMTH1 in oxidative DNA damage caused by hydrogen peroxide. Toxicol Lett 2014; 230:62-8. [PMID: 25127756 DOI: 10.1016/j.toxlet.2014.08.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 08/01/2014] [Accepted: 08/10/2014] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To investigate the potential compensatory effects of hOGG1 and hMTH1 in the repair of oxidative DNA damage. METHODS The hOGG1 and hMTH1 gene knockdown human embryonic pulmonary fibroblast cell lines were established by lentivirus-mediated RNA interference. The messenger RNA (mRNA) levels of hOGG1 and hM1TH1 were analyzed by the real-time polymerase chain reaction, and 8-hydroxy-2'-deoxyguanosine (8-oxo-dG) formation was analyzed in a high-performance liquid chromatography-electrochemical detection system. RESULTS The hOGG1 and hMTH1 knockdown cells were obtained through blasticidin selection. After transfection of hOGG1 and hMTH1 small interfering RNA, the expression levels of the mRNA of hOGG1 and hMTH1 genes were decreased by 97.2% and 96.2%, respectively. The cells then were exposed to 100 μmol/L of hydrogen peroxide (H2O2) for 12 h to induce oxidative DNA damage. After H2O2 exposure, hMTH1 mRNA levels were increased by 25% in hOGG1 gene knockdown cells, whereas hOGG1 mRNA levels were increased by 52% in hMTH1 gene knockdown cells. Following the treatment with H2O2, the 8-oxo-dG levels in the DNA of hOGG1 gene knockdown cells were 3.1-fold higher than those in untreated HFL cells, and 1.67-fold higher than those in H2O2-treated wild-type cells. The 8-oxo-dG levels in hMTH1 gene knockdown cells were 2.3-fold higher than those in untreated human embryonic pulmonary fibroblast cells, but did not differ significantly from those in H2O2-treated wild-type cells. CONCLUSION Our data suggested that hOGG1 could compensate for hMTH1 during oxidative DNA damage caused by H2O2, whereas hMTH1 could not compensate sufficiently for hOGG1 during the process.
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Affiliation(s)
- Yuebin Ke
- Key Laboratory of Genetics & Molecular Medicine of Shenzhen, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China.
| | - Ziquan Lv
- Key Laboratory of Genetics & Molecular Medicine of Shenzhen, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Xifei Yang
- Key Laboratory of Genetics & Molecular Medicine of Shenzhen, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Jianqing Zhang
- Key Laboratory of Genetics & Molecular Medicine of Shenzhen, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Juan Huang
- Key Laboratory of Genetics & Molecular Medicine of Shenzhen, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Shuang Wu
- Key Laboratory of Genetics & Molecular Medicine of Shenzhen, Shenzhen Center for Disease Control and Prevention, Shenzhen 518055, China
| | - Y Robert Li
- Department of Pharmacology, Campbell University School of Medicine, Buies Creek, NC 27546, USA; Department of Biomedical Sciences and Pathobiology, Virginia Polytechnic Institute and State University, and Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Blacksburg, VA 24061, USA
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The rs7003908 (T>G) polymorphism in the XRCC7 gene and the risk of cancers. Mol Biol Rep 2014; 41:3577-82. [PMID: 24535266 DOI: 10.1007/s11033-014-3220-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Accepted: 01/28/2014] [Indexed: 02/05/2023]
Abstract
The association between the rs7003908 (T>G) polymorphism in the XRCC7 gene and the risk of cancers had been widely studied; however, the results were inconsistent. The objective of the current study was to investigate the association between the rs7003908 polymorphism in the XRCC7 gene and the risk of cancers by meta-analysis. We searched PubMed, EMbase, CNKI and Wanfang databases; the last search was performed on January 10th, 2014. Statistical analysis was performed using the Revman4.2 and STATA10.0 softwares. A total of 3,684 cancer cases and 5,232 controls from 11 case-control studies were included for data analysis. In the dominant model analysis, the results suggested a lack of association between the polymorphism and the risk of cancers: OR 1.01, 95% CI 0.83-1.16, P = 0.70. In the subgroup analysis by ethnicity, no significant association was found either for Asians or Caucasians. In the subgroup analysis by cancer types, significant association was found for prostate cancer, but not for bladder cancer, breast cancer and glioma. In summary, the current meta-analysis confirmed that the rs7003908 polymorphism in the XRCC7 gene might be a risk factor for prostate cancer. In the future, more studies are needed to validate these results.
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Jaiswal PK, Singh V, Mittal RD. Cytotoxic T lymphocyte antigen 4 (CTLA4) gene polymorphism with bladder cancer risk in North Indian population. Mol Biol Rep 2014; 41:799-807. [DOI: 10.1007/s11033-013-2919-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Accepted: 12/18/2013] [Indexed: 12/27/2022]
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Peng Q, Mo C, Tang W, Chen Z, Li R, Zhai L, Yang S, Wu J, Sui J, Li S, Qin X. DNA repair gene XRCC3 polymorphisms and bladder cancer risk: a meta-analysis. Tumour Biol 2013; 35:1933-44. [DOI: 10.1007/s13277-013-1259-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Accepted: 09/25/2013] [Indexed: 12/11/2022] Open
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Genetic polymorphisms of XRCC3 Thr241Met (C18067T, rs861539) and bladder cancer risk: a meta-analysis of 18 research studies. Tumour Biol 2013; 35:1473-80. [PMID: 24085356 DOI: 10.1007/s13277-013-1203-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Accepted: 09/11/2013] [Indexed: 01/19/2023] Open
Abstract
The relationship of bladder cancer with the presence of X-ray cross-complementing group 3(XRCC3) genetic polymorphism Thr241Met has been reported with inconsistent results. The objective of this study was to quantitatively evaluate the association between this polymorphism and bladder cancer susceptibility. A comprehensive research was conducted through PubMed, Medline, Embase, and Web of Science databases up to Aug. 20, 2013. Pooled odds ratio and 95 % confidence interval were calculated using a fixed or random effects model. Statistical analysis was performed with Stata 12.0 software. Of the 18 case-control studies selected for this meta-analysis, a total of 5,667 bladder cancer cases and 7,609 controls were included. The combined results based on all studies suggested that XRCC3 Thr241Met was associated with bladder cancer risk under homozygote and recessive models. When stratifying for ethnicity, significant association was found in Caucasians under homozygote and recessive models. This meta-analysis suggests that XRCC3 Thr241Met polymorphism is a risk factor for bladder cancer risk. However, further well-designed studies are required to confirm our findings.
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Rahimi M, Fayaz S, Fard-Esfahani A, Modarressi MH, Akrami SM, Fard-Esfahani P. The role of Ile3434Thr XRCC7 gene polymorphism in differentiated thyroid cancer risk in an Iranian population. IRANIAN BIOMEDICAL JOURNAL 2013. [PMID: 23183621 DOI: 10.6091/ibj.1078.2012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND The aim of this study was to understand any association between differentiated thyroid carcinoma (DTC) and Ile3434Thr XRCC7 gene polymorphism (GenBank accession number: rs7830743). DTC is the most prevalent thyroid neoplasm, which includes papillary and follicular cell carcinoma. XRCC7 gene encodes a protein that functions in non-homologous end joining DNA repair pathway. Non-synonymous polymorphisms in this gene may alter DNA repair capacity of the cell and change the risk of developing cancers. METHODS DTC patients (n = 173) and cancer free individuals (n = 204) were enrolled in a case-control study. The Ile3434Thr polymorphic alleles were discriminated by using amplification refractory mutation system-PCR method. The frequencies of this single nucleotide polymorphism in case and control groups were compared. Also, risk ratio for developing DTC in dichotomized genotypes was estimated by multivariate logistic regression analysis. RESULTS Dichotomized genotypes into those with and without the 3434Thr allele showed that this allele was associated with DTC (OR [odd ratio]: 1.89, 95% confidence interval (CI) = 1.29-2.79, P<0.001). Also, TC genotype was significantly associated with increased risk of DTC (OR: 2.42, 95% CI = 1.55-3.81, P = 0.0001) in individuals carrying this genotype. CONCLUSION Allele 3434Thr in XRCC7 gene might be associated with differentiated thyroid cancer risk. Further studies with larger samples are needed to verify these initial findings.
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Affiliation(s)
- Maryam Rahimi
- Science and Research Branch of Islamic Azad University, Tehran, Iran
| | - Shima Fayaz
- Dept. of Biochemistry, Pasteur Institute of Iran, Tehran, Iran
| | - Armaghan Fard-Esfahani
- Research Institute for Nuclear Medicine, Tehran University of Medical Sciences, Tehran, Iran
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He XF, Wei W, Li JL, Shen XL, Ding DP, Wang SL, Liu ZZ, Qin JB, Wu LX, Xie DL. Association between the XRCC3 T241M polymorphism and risk of cancer: evidence from 157 case-control studies. Gene 2013; 523:10-9. [PMID: 23562721 DOI: 10.1016/j.gene.2013.03.071] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 02/21/2013] [Accepted: 03/16/2013] [Indexed: 12/16/2022]
Abstract
The T241M polymorphism in the X-ray cross-complementing group 3 (XRCC3) had been implicated in cancer susceptibility. The previous published data on the association between XRCC3 T241M polymorphism and cancer risk remained controversial. Hence, we performed a meta-analysis to investigate the association between cancer susceptibility and XRCC3 T241M (61,861 cases and 84,584 controls from 157 studies) polymorphism in different inheritance models. We used odds ratios with 95% confidence intervals to assess the strength of the association. Overall, significantly increased cancer risk was observed in any genetic model (dominant model: odds ration [OR]=1.07, 95% confidence interval [CI]=1.00-1.13; recessive model: OR=1.15, 95% CI=1.08-1.23; additive model: OR=1.17, 95% CI=1.08-1.28) when all eligible studies were pooled into the meta-analysis. In further stratified and sensitivity analyses, the elevated risk remained for subgroups of bladder cancer and breast cancer, especially in Caucasians. In addition, significantly decreased lung cancer risk was also observed. In summary, this meta-analysis suggests the participation of XRCC3 T241M in the susceptibility for bladder cancer and breast cancer, especially in Caucasians, and XRCC3 T241M polymorphism is associated with decreased lung cancer risk. Moreover, our work also points out the importance of new studies for T241M association in some cancer types, such as gastric cancer, colorectal cancer, and melanoma skin cancer, where at least some of the covariates responsible for heterogeneity could be controlled, to obtain a more conclusive understanding about the function of the XRCC3 polymorphism in cancer development.
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Affiliation(s)
- Xiao-Feng He
- Department of Research, Peace Hospital of Changzhi Medical College, Changzhi, 046000, PR China.
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Mondal P, Datta S, Maiti GP, Baral A, Jha GN, Panda CK, Chowdhury S, Ghosh S, Roy B, Roychoudhury S. Comprehensive SNP scan of DNA repair and DNA damage response genes reveal multiple susceptibility loci conferring risk to tobacco associated leukoplakia and oral cancer. PLoS One 2013; 8:e56952. [PMID: 23437280 PMCID: PMC3577702 DOI: 10.1371/journal.pone.0056952] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2012] [Accepted: 01/16/2013] [Indexed: 12/26/2022] Open
Abstract
Polymorphic variants of DNA repair and damage response genes play major role in carcinogenesis. These variants are suspected as predisposition factors to Oral Squamous Cell Carcinoma (OSCC). For identification of susceptible variants affecting OSCC development in Indian population, the "maximally informative" method of SNP selection from HapMap data to non-HapMap populations was applied. Three hundred twenty-five SNPs from 11 key genes involved in double strand break repair, mismatch repair and DNA damage response pathways were genotyped on a total of 373 OSCC, 253 leukoplakia and 535 unrelated control individuals. The significantly associated SNPs were validated in an additional cohort of 144 OSCC patients and 160 controls. The rs12515548 of MSH3 showed significant association with OSCC both in the discovery and validation phases (discovery P-value: 1.43E-05, replication P-value: 4.84E-03). Two SNPs (rs12360870 of MRE11A, P-value: 2.37E-07 and rs7003908 of PRKDC, P-value: 7.99E-05) were found to be significantly associated only with leukoplakia. Stratification of subjects based on amount of tobacco consumption identified SNPs that were associated with either high or low tobacco exposed group. The study reveals a synergism between associated SNPs and lifestyle factors in predisposition to OSCC and leukoplakia.
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Affiliation(s)
- Pinaki Mondal
- Cancer Biology and Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, Kolkata, West Bengal, India
| | - Sayantan Datta
- Human Genetics Unit, Indian Statistical Institute, Kolkata, West Bengal, India
| | - Guru Prasad Maiti
- Oncogene Regulation and Viral associated Human cancer, Chittaranjan National Cancer Institute, Kolkata, West Bengal, India
| | - Aradhita Baral
- Proteomics and Structural Biology Unit, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Ganga Nath Jha
- Department of Anthropology, Vinoba Bhave University, Hazaribag, Bihar, India
| | - Chinmay Kumar Panda
- Oncogene Regulation and Viral associated Human cancer, Chittaranjan National Cancer Institute, Kolkata, West Bengal, India
| | - Shantanu Chowdhury
- Proteomics and Structural Biology Unit, CSIR-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Saurabh Ghosh
- Human Genetics Unit, Indian Statistical Institute, Kolkata, West Bengal, India
| | - Bidyut Roy
- Human Genetics Unit, Indian Statistical Institute, Kolkata, West Bengal, India
| | - Susanta Roychoudhury
- Cancer Biology and Inflammatory Disorder Division, CSIR-Indian Institute of Chemical Biology, Kolkata, West Bengal, India
- * E-mail:
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Saadat I, Vakili-Ghartavol R, Farvardin-Jahromi M, Saadat M. Association between exudative age-related macular degeneration and the G6721T polymorphism of XRCC7 in outdoor subjects. KOREAN JOURNAL OF OPHTHALMOLOGY 2012. [PMID: 23204796 PMCID: PMC3506815 DOI: 10.3341/kjo.2012.26.6.423] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
PURPOSE To investigate whether the G6721T polymorphism (rs.7003908) of the non-homologous end-joining DNA repair XRCC7 gene contributes to the development of exudative age-related macular degeneration (ARMD). METHODS The present case-control study consisted of 111 patients with exudative ARMD and 112 sex frequency-matched healthy controls that were randomly selected from unrelated volunteers in the same clinic. Genotypes were determined by the Restriction Fragment Length Polymorphism (PCR-RFLP) based method. Logistic regression was used to calculate odds ratios (ORs) and 95% confidence intervals (CIs) for ARMD risk associated with polymorphism of XRCC7. In all analysis the GG genotype was considered to be the reference genotype. RESULTS There was no significant association between genotypes of XRCC7 and susceptibility to ARMD. Considering the significant difference in age distribution between cases and controls, age was used as a covariate in further analysis. After ORs were adjusted for age, the same result was observed. In the next step we stratified our subjects into outdoor and indoor groups according to their job titles. The outdoor and indoor patients were occupationally exposed to sunlight and not exposed to sunlight, respectively. Our present study showed that among indoor subjects there was no association between XRCC7 polymorphism and susceptibility to ARMD. However, among outdoor subjects, the GT + TT genotypes compared to the GG genotype increased the risk of ARMD (OR, 3.13; 95% CI, 1.04-9.39; p = 0.042). CONCLUSIONS Our study revealed that the T allele of the G6721T polymorphism of XRCC7 increased the risk of ARMD among outdoor subjects.
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Affiliation(s)
- Iraj Saadat
- Department of Biology, Shiraz University College of Sciences, Shiraz, Iran
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Current evidence on the relationship between three polymorphisms in the XRCC7 gene and cancer risk. Mol Biol Rep 2012; 40:81-6. [PMID: 23108991 DOI: 10.1007/s11033-012-2018-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2012] [Accepted: 10/01/2012] [Indexed: 01/20/2023]
Abstract
Inconsistency of the association of polymorphisms of XRCC7 with cancer is noted. Three commonly studied XRCC7 polymorphisms including rs7003908 (T>G), rs7830743 (A>G), and rs10109984 (T>C) were selected to explore their association with risk of development of cancer by meta-analysis of published case-control studies. The results showed that no significant associations with cancer risk were found in any model in terms of rs7003908, rs7830743 and rs10109984 when all studies were pooled into the meta-analysis. But when stratified by cancer type, statistically significantly elevated cancer risk was only found in prostate cancer for rs7003908 (GG vs. TT: OR = 1.845, 95 % CI = 1.178-2.888; dominant model: OR = 1.423, 95 % CI = 1.050-1.929; recessive model: OR = 1.677, 95 % CI = 1.133-2.482). In the subgroup analysis by ethnicity or study design, no significantly increased risks were found for all three polymorphisms. This meta-analysis suggests that XRCC7 rs7003908 polymorphism may contribute to cancer susceptibility for prostate cancer, which is recommended to be included in future large-sample studies and functional assays.
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Zhong DY, Chu HY, Wang ML, Ma L, Shi DN, Zhang ZD. Meta-analysis demonstrates lack of association of the hOGG1 Ser326Cys polymorphism with bladder cancer risk. GENETICS AND MOLECULAR RESEARCH 2012; 11:3490-6. [PMID: 23079842 DOI: 10.4238/2012.september.26.4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The functional polymorphism Ser326Cys (rs1052133) in the human 8-oxoguanine DNA glycosylase (hOGG1) gene has been implicated in bladder cancer risk. However, reports of this association between the Ser326Cys polymorphism and bladder cancer risk are conflicting. In order to help clarify this relationship, we made a meta-analysis of seven case-control studies, summing 2521 cases and 2408 controls. We used odds ratios (ORs) with 95% confidence intervals (95%CIs) to assess the strength of the association. Overall, no significant association between the hOGG1 Ser326Cys polymorphism and bladder cancer risk was found for Cys/Cys vs Ser/Ser (OR = 1.10, 95%CI = 0.74-1.65), Ser/Cys vs Ser/Ser (OR = 1.07, 95%CI = 0.81-1.42), Cys/Cys + Ser/Cys vs Ser/Ser (OR = 1.08, 95%CI = 0.87-1.33), and Cys/Cys vs Ser/Cys + Ser/Ser (OR = 1.04, 95%CI = 0.65-1.69). Even when stratified by ethnicity, no significant association was observed. We concluded that the hOGG1 Ser326Cys polymorphism does not contribute to susceptibility to bladder cancer.
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Affiliation(s)
- D Y Zhong
- Department of Molecular and Genetic Toxicology, Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing, China
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Ji C, Liu Z, Chen H, Guo H, Liu C. An association between hOGG1 Ser326Cys polymorphism and the risk of bladder cancer in non-smokers: a meta-analysis. BMC Cancer 2012; 12:335. [PMID: 22857644 PMCID: PMC3487852 DOI: 10.1186/1471-2407-12-335] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2012] [Accepted: 07/16/2012] [Indexed: 11/15/2022] Open
Abstract
Background Bladder cancer results from complex interactions between many genetic and environment factors. The polymorphism Ser326Cys in hOGG1 gene has been reported to be associated with bladder cancer in some studies, though the results remain inconclusive. To explore this relationship of hOGG1 polymorphism and the susceptibility for bladder cancer and the impact of smoking exposures, a cumulative meta-analysis was performed in this study. Methods We extracted the data from the Pubmed database up to January 9, 2012 using the search phrases “hOGG1, Ser326Cys polymorphism and bladder cancer”. Seven case–control studies were identified, including 2474 patients and 2408 controls. Four of them provided the analysis of smoking effects, with 1372 smokers and 947 non-smokers. The odds ratios (ORs) and associated 95 % confidence intervals (CIs) were calculated using fixed- or random- effects models. Results Regarding the overall association between the hOGG1 326Cys allele and bladder cancer risk, the meta-analysis did not reveal a significant effect in the additive model (OR: 1.06, 95 % CI: 0.96-1.26; p = 0.49), the recessive genetic model (OR: 1.05, 95 % CI: 0.65-1.70; p = 0.85) or the dominant genetic model (OR: 1.07, 95 % CI: 0.87-1.32; p = 0.53). Similarly, no significant relationship was observed in the stratified analysis by ethnicity, study design and Hardy-Weinberg equilibrium (all p > 0.05). In the non-smokers, however, hOGG1 326Cys allele significantly increased the risk for bladder cancer and the ORs in the additive model, homozygote contrast and recessive genetic model were 1.59 (p = 0.02), 2.53(p = 0.003) and 2.41(p = 0.0005), respectively. Nevertheless, in the smoker subgroup, similar findings could not be found in all genetic models (all p > 0.05). Conclusions The association between the hOGG1 326Cys allele and bladder cancer was significant in non-smoker population, while was non-detectable in common or smoker populations. This meta-analysis suggests that the hOGG1 Ser326Cys polymorphism may be a risk factor for bladder cancer without exposure to smoking. Further functional studies are needed to elucidate the gene polymorphism-bladder cancer relationship and gene-environment interactions.
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Affiliation(s)
- Changwei Ji
- Department of Urology, the Affiliated Drum Tower Hospital of Nanjingm, University Medical School, Nanjing 210008, China
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Simonelli V, Mazzei F, D'Errico M, Dogliotti E. Reprint of: gene susceptibility to oxidative damage: from single nucleotide polymorphisms to function. Mutat Res 2012; 736:104-16. [PMID: 22732424 DOI: 10.1016/j.mrfmmm.2012.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Revised: 09/27/2011] [Accepted: 10/27/2011] [Indexed: 11/18/2022]
Abstract
Oxidative damage to DNA can cause mutations, and mutations can lead to cancer. DNA repair of oxidative damage should therefore play a pivotal role in defending humans against cancer. This is exemplified by the increased risk of colorectal cancer of patients with germ-line mutations of the oxidative damage DNA glycosylase MUTYH. In contrast to germ-line mutations in DNA repair genes, which cause a strong deficiency in DNA repair activity in all cell types, the role of single nucleotide polymorphisms (SNPs) in sporadic cancer is unclear also because deficiencies in DNA repair, if any, are expected to be much milder. Further slowing down progress are the paucity of accurate and reproducible functional assays and poor epidemiological design of many studies. This review will focus on the most common and widely studied SNPs of oxidative DNA damage repair proteins trying to bridge the information available on biochemical and structural features of the repair proteins with the functional effects of these variants and their potential impact on the pathogenesis of disease.
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Affiliation(s)
- Valeria Simonelli
- Department of Environment and Primary Prevention, Istituto Superiore di Sanità, Rome, Italy.
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32
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Saadat I, Beyzaei Z, Aghaei F, Kamrani S, Saadat M. Association between polymorphisms in DNA repair genes (XRCC1 and XRCC7) and risk of preeclampsia. Arch Gynecol Obstet 2012; 286:1459-62. [PMID: 22825692 DOI: 10.1007/s00404-012-2471-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Accepted: 07/11/2012] [Indexed: 12/11/2022]
Abstract
PURPOSE Although the exact genes involved in preeclampsia (PE) are still not fully discovered, an important role for oxidative stress in its pathogenesis is accepted. XRCC1 (MIM: 194360) and XRCC7 (MIM: 600899) play a crucial role in the DNA repair pathways. Functional polymorphisms in XRCC1 (Arg194Trp and Arg399Gln) and XRCC7 (G6721T) may be risk factors for PE. In the present study, the association between the genetic polymorphisms of XRCC1 and XRCC7 and risk of PE is investigated. METHODS The present case-control study was performed on 151 preeclapmtic patients, and a total of 344 normal pregnant women, as a control group. Control women had no history of pregnancies with PE. RESULTS Neither polymorphism of Arg194Trp XRCC1 nor polymorphism of G6721T XRCC7 associated with the risk of PE. The Gln/Gln genotype of Arg399Gln XRCC1 polymorphism increased the risk of PE (OR=2.39, 95 % CI: 1.38-4.14, P=0.002). Statistical analysis revealed that the haplotype "194Arg-399Gln" showed higher frequency among PE patients compared to the controls (OR=1.65, 95% CI: 1.23-2.19, P=0.001). CONCLUSIONS The present results suggest that the 399Gln allele of the XRCC1 is significant risk factor for PE development.
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Affiliation(s)
- Iraj Saadat
- Department of Biology, College of Sciences, Shiraz University, Shiraz, 71454, Iran
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Nasiri M, Saadat I, Omidvari S, Saadat M. Genetic variation in DNA repair gene XRCC7 (G6721T) and susceptibility to breast cancer. Gene 2012; 505:195-7. [PMID: 22634101 DOI: 10.1016/j.gene.2012.04.065] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2011] [Revised: 02/28/2012] [Accepted: 04/22/2012] [Indexed: 11/17/2022]
Abstract
The human XRCC7 is a DNA double-strand break (DSBs) repair gene, involved in non-homologous end joining (NHEJ). It is speculated that DNA DSBs repair have an important role during development of breast cancer. The human XRCC7 is a NHEJ DSBs repair gene. Genetic variation G6721T of XRCC7 (rs7003908) is located in the intron 8 of the gene. This polymorphism may regulate splicing and cause mRNA instability. In the present study, we specifically investigated whether common G6721T genetic variant of XRCC7 was associated with an altered risk of breast cancer. The present study included 362 females with breast cancer. Age frequency-matched controls (362 persons) were randomly selected from the healthy female blood donors, according to the age distribution of the cases. Using RFLP-PCR based method, the polymorphism of XRCC7 was determined. The TG (OR=1.20, 95% CI: 0.83-1.74, P=0.320) and TT (OR=1.01, 95% CI: 0.67-1.53, P=0.933) genotypes had no significant effect on risk of breast cancer, in comparison with the GG genotype. Our present findings indicate that the TT and TG genotypes were not associated with an altered breast cancer risk.
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Affiliation(s)
- Meysam Nasiri
- Department of Biology, College of Sciences, Shiraz University, Shiraz 71454, Iran
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Ma L, Chu H, Wang M, Shi D, Zhong D, Li P, Tong N, Yin C, Zhang Z. hOGG1 Ser326Cys polymorphism is associated with risk of bladder cancer in a Chinese population: a case-control study. Cancer Sci 2012; 103:1215-20. [PMID: 22463382 DOI: 10.1111/j.1349-7006.2012.02290.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 03/18/2012] [Accepted: 03/24/2012] [Indexed: 01/01/2023] Open
Abstract
Human oxoguanine glycosylase 1 (hOGG1) is a DNA repair enzyme, which plays important roles in the base excision repair (BER) pathway. Several studies reported a common polymorphism Ser326Cys (rs1052133) in hOGG1, which conferred the susceptibility of bladder cancer. We hypothesized that the polymorphism is associated with risk of bladder cancer in a Chinese population. In a case-control study of 1050 histologically confirmed bladder cancer patients and 1404 age and sex matched healthy controls, we genotyped the hOGG1 Ser326Cys polymorphism using TaqMan technology and assessed its association with bladder cancer risk. We found that the hOGG1 Ser/Cys + Ser/Ser genotypes were associated with a significantly increased risk of bladder cancer (adjusted odds ratio [OR] = 1.19, 95% confidence interval [CI] = 1.01-1.41), compared with the Cys/Cys genotype. Furthermore, the increased risk was more pronounced among subjects over age 65 years (OR = 1.31, 95% CI = 1.04-1.66), male subjects (OR = 1.21, 95% CI = 1.00-1.47), ever smokers (OR = 1.29, 95% CI = 1.00-1.68) and heavy smokers (>20 pack-years) (OR = 1.45, 95% CI = 1.03-2.04). No significant association was observed in the stratification of tumor grade and tumor stage for bladder cancer. In conclusion, our results suggest that hOGG1 Ser326Cys polymorphism may contribute to the susceptibility to bladder cancer in a Chinese population.
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Affiliation(s)
- Lan Ma
- Departments of Molecular & Genetic Toxicology, the Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing, China
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Simonelli V, Mazzei F, D'Errico M, Dogliotti E. Gene susceptibility to oxidative damage: from single nucleotide polymorphisms to function. Mutat Res 2012; 731:1-13. [PMID: 22155132 DOI: 10.1016/j.mrfmmm.2011.10.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Revised: 09/27/2011] [Accepted: 10/27/2011] [Indexed: 05/31/2023]
Abstract
Oxidative damage to DNA can cause mutations, and mutations can lead to cancer. DNA repair of oxidative damage should therefore play a pivotal role in defending humans against cancer. This is exemplified by the increased risk of colorectal cancer of patients with germ-line mutations of the oxidative damage DNA glycosylase MUTYH. In contrast to germ-line mutations in DNA repair genes, which cause a strong deficiency in DNA repair activity in all cell types, the role of single nucleotide polymorphisms (SNPs) in sporadic cancer is unclear also because deficiencies in DNA repair, if any, are expected to be much milder. Further slowing down progress are the paucity of accurate and reproducible functional assays and poor epidemiological design of many studies. This review will focus on the most common and widely studied SNPs of oxidative DNA damage repair proteins trying to bridge the information available on biochemical and structural features of the repair proteins with the functional effects of these variants and their potential impact on the pathogenesis of disease.
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Affiliation(s)
- Valeria Simonelli
- Department of Environment and Primary Prevention, Istituto Superiore di Sanità, Rome, Italy.
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36
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Zhu X, Zhong Z, Zhang X, Zhao X, Xu R, Ren W, Li S. DNA repair gene XRCC3 T241M polymorphism and bladder cancer risk in a Chinese population. Genet Test Mol Biomarkers 2012; 16:640-3. [PMID: 22299591 DOI: 10.1089/gtmb.2011.0334] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The X-ray repair cross-complementing group 3 (XRCC3), one of the DNA repair genes, was suggested to play an imperative role in the development of carcinogenesis. The objective of this study was to evaluate the role of the XRCC3 T241M polymorphism in bladder cancer susceptibility in a Chinese population. We genotyped 150 bladder cancer cases and 150 healthy controls who had been frequency matched to cases by age and sex. Genotypes were determined by polymerase chain reaction-restriction fragment length polymorphism analysis. A significant association was found between smoker and bladder cancer [odds ratio (OR)=1.97, 95% confidence interval (CI)=1.24-3.13, p=0.004]. The XRCC3 241MM genotype was more frequent in the bladder cancer group than in the healthy controls group (OR=3.22, 95% CI=1.14-9.11, p=0.03). There were no significant associations between any genotypes and the stage, grade, and histological type of bladder cancer. Our study suggested an increased risk role of XRCC3 241MM genotype in bladder cancer susceptibility in a Chinese population.
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Affiliation(s)
- Xuan Zhu
- Department of Urology, The Second Xiangya Hospital of Central South University, Changsha, China
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Li D, Liu H, Yan L, Tang Y, Ren J, Xu Z. Lack of association between hOGG1 Ser326Cys polymorphism and the risk of bladder cancer: a meta-analysis. Urol Int 2011; 88:88-94. [PMID: 22156293 DOI: 10.1159/000331931] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Accepted: 08/13/2011] [Indexed: 12/23/2022]
Abstract
OBJECTIVE In some but not all studies, hOGG1 Ser326Cys polymorphism has been reported to contribute to the risk of bladder cancer. To determine whether there is a significant association of hOGG1 Ser326Cys polymorphism with the susceptibility for bladder cancer, we performed a comprehensive meta-analysis. METHODS The electronic PubMed, Medline and Springer databases were searched for publications on the association between hOGG1 Ser326Cys polymorphism and bladder cancer through to May 20, 2011. Seven case-control studies were identified, including 2,474 cases and 2,408 controls. From these identified publications, crude odds ratios (ORs) and 95% confidence intervals (CIs) were calculated to estimate the strength of association using fixed- or random-effects models. Two investigators each extracted data and conducted the analysis independently. RESULTS Overall, no significant associations were found between hOGG1 Ser326Cys polymorphism and bladder cancer in codominant models (GG vs. CC: OR 1.11, 95% CI 0.74-1.66, p = 0.63; GC vs. CC: OR 1.07, 95% CI 0.80-1.41, p = 0.65). Similarly, no significant associations with bladder cancer were observed in the recessive model (GG vs. GC+CC: OR 1.05, 95% CI 0.65-1.70, p = 0.85), dominant model (GG+GC vs. CC: OR 1.07, 95% CI 0.87-1.32, p = 0.53) and allele model (G vs. C: OR 1.06, 95% CI 0.90-1.26, p = 0.49). In the stratified analyses by ethnicity, control sources, pathology, Hardy-Weinberg equilibrium, significant associations were still not observed. CONCLUSIONS The overall current literature on hOGG1 Ser326Cys polymorphism and the risk of bladder cancer suggests no statistically significant association between the two. Additional primary studies may be necessary to provide evidence of any significant association between this specific polymorphism and bladder cancer.
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Affiliation(s)
- Dawei Li
- Department of Urology, Qilu Hospital, Shandong University, Jinan City, PR China
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Wei B, Zhou Y, Xu Z, Xi B, Cheng H, Ruan J, Zhu M, Hu Q, Wang Q, Wang Z, Yan Z, Jin K, Zhou D, Xuan F, Huang X, Shao J, Lu P. The effect of hOGG1 Ser326Cys polymorphism on cancer risk: evidence from a meta-analysis. PLoS One 2011; 6:e27545. [PMID: 22114677 PMCID: PMC3219678 DOI: 10.1371/journal.pone.0027545] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Accepted: 10/18/2011] [Indexed: 01/15/2023] Open
Abstract
Background Human oxoguanine glycosylase 1 (hOGG1) in base excision repair (BER) pathway plays a vital role in DNA repair. Numerous epidemiological studies have evaluated the association between hOGG1 Ser326Cys polymorphism and the risk of cancer. However, the results of these studies on the association remain conflicting. To derive a more precise estimation of the association, we conducted a meta-analysis. Methodology/Principal Findings A comprehensive search was conducted to identify the eligible studies of hOGG1 Ser326Cys polymorphism and cancer risk. We used odds ratios (ORs) with 95% confidence intervals (CIs) to assess the strength of the association. We found that the hOGG1 Ser326Cys polymorphism was significantly associated with overall cancer risk (Cys/Cys vs. Ser/Ser: OR = 1.19, 95%CI = 1.09–1.30, P<0.001; Cys/Cys vs. Cys/Ser+Ser/Ser: OR = 1.16, 95%CI = 1.08–1.26, P<0.001). Moreover, in subgroup analyses by cancer types, the stronger significant association between hOGG1 Ser326Cys polymorphism and lung cancer risk was found (Cys/Cys vs. Ser/Ser: OR = 1.29, 95%CI = 1.16–1.44, P<0.001; Cys/Cys vs. Cys/Ser+Ser/Ser: OR = 1.22, 95%CI = 1.12–1.33, P<0.001). The significant effects of hOGG1 Ser326Cys polymorphism on colorectal, breast, bladder, prostate, esophageal, and gastric cancer were not detected. In addition, in subgroup analyses by ethnicities, we found that the hOGG1 Ser326Cys polymorphism was associated with overall cancer risk in Asians (Cys/Cys vs. Ser/Ser: OR = 1.21, 95%CI = 1.10–1.33, P<0.001). Conclusions This meta-analysis showed that hOGG1 326Cys allele might be a low-penetrant risk factor for lung cancer.
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Affiliation(s)
- Bingbing Wei
- Department of Urology, Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi, China
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Long XD, Yao JG, Huang YZ, Huang XY, Ban FZ, Yao LM, Fan LD. DNA repair gene XRCC7 polymorphisms (rs#7003908 and rs#10109984) and hepatocellular carcinoma related to AFB1 exposure among Guangxi population, China. Hepatol Res 2011; 41:1085-93. [PMID: 21883743 DOI: 10.1111/j.1872-034x.2011.00866.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
AIM The X-ray repair cross-complementing group 7 (XRCC7) plays an important role in the repair of DNA double-strand breaks by nonhomologous end-joining repair (NEJR) pathway. However, the role of XRCC7 polymorphisms (rs#7003908 and rs#10109984) possibly influencing NEJR capacity in hepatocellular carcinoma (HCC) induced by aflatoxin B1 (AFB1) has not been well elaborated. METHODS This hospital-based case-control study, including 348 patients with newly diagnosed HCC and 597 controls without any evidence of liver diseases, was conducted to elucidate the association between these two polymorphisms and the risk of HCC related to AFB1 exposure among a Guangxi population from a high AFB1-exposure area by means of TaqMAN-polymerase chain reaction technique. RESULTS We observed that HCC patients featured higher AFB1 exposure than control group (odds ratios [OR] = 6.49 and 6.75 for exposure years and exposure levels, respectively). Furthermore, these individuals with the genotypes of XRCC7 rs#7003908 G alleles (namely XRCC7-TG or -GG), compared the homozygote of XRCC7 rs#7003908 T alleles (XRCC7-TT), faced increasing risk of HCC (OR, 3.45 and 5.04; 95% confidence intervals [CIs], 2.40-4.94 and 3.28-7.76, respectively). We also found some evidence that this polymorphism interacted with AFB1-expousure years or levels in the process of HCC carcinogenesis. Additionally, XRCC7 rs#7003908 polymorphism was correlated with the levels of AFB1-DNA adducts (r = 0.142, P < 0.001). XRCC7 rs#10109984 polymorphism, however, did not modify the risk of HCC related to AFB1 exposure (P > 0.05). CONCLUSION These data suggest that XRCC7 rs#7003908 polymorphism may be one of the genetic modifiers for AFB1-related HCC among Guangxi population.
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Affiliation(s)
- Xi-Dai Long
- Department of Pathology Department of Medicine, Youjiang Medical College for Nationalities, Baise, Guangxi Zhuang Autonomous Region, China Department of Test Medicine, Southwest Hospital of Youjiang Medical College for Nationalities, Baise, Guangxi Zhuang Autonomous Region Department of Imaging Medicine (G2008) Department of Clinic Medicine (G2009), Youjiang Medical College for Nationalities, Baise, Guangxi Zhuang Autonomous Region, China
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Kumar A, Pant MC, Singh HS, Khandelwal S. Associated risk of XRCC1 and XPD cross talk and life style factors in progression of head and neck cancer in north Indian population. Mutat Res 2011; 729:24-34. [PMID: 21945240 DOI: 10.1016/j.mrfmmm.2011.09.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Revised: 09/04/2011] [Accepted: 09/08/2011] [Indexed: 10/17/2022]
Abstract
Effective DNA repair machinery ensures maintenance of genomic integrity. Environmental insults, ageing and replication errors necessitate the need for proper DNA repair systems. Any alteration in DNA repair efficacy would play a dominant role in progression of squamous cell carcinoma of head and neck (SCCHN). Genotypes of XRCC1 gene-Arg194Trp, Arg280His, Arg399Gln and XPD Lys751Gln, by PCR-RFLP were studied in 278 SCCHN patients and an equal number of matched healthy controls residing in north India. In XRCC1 polymorphisms, Arg194Trp and Arg399Gln variants showed a reduced risk, whereas, XPD Lys751Gln variants exhibited ∼2-fold increase in SCCHN risk. With XRCC1-Arg280His variants, there was no association with SCCHN risk. Arg399Gln of XRCC1 appears to have a protective role in people those consume alcohol, while XPD Lys751Gln variants indicated ∼2-fold increased risk of SCCHN in all the co-variate groups. Comparison of gene-gene interaction among XRCC1 Arg280His and XPD Lys751Gln suggested enhanced risk of SCCHN by ∼2.3-fold in group one and ∼6.1-fold in group two. In dichotomized groups of this combination, the risk was ∼2.4 times. Haplotype analysis revealed the frequency of C-G-G-G and C-A-G-G to be significantly associated with an increased risk of SCCHN. On the contrary, T-G-A-A significantly diminished the risk. CART analysis results showed that the terminal node that contains homozygous mutants of XPD Lys751Gln and XRCC1 Arg194Trp, wild type of XRCC1 Arg399Gln and homozygous mutant of XRCC1 Arg280His, represent the highest risk group. Our results demonstrate high degree of gene-gene interaction involving DNA repair genes of NER and BER pathways, namely XRCC1 and XPD. This study amply demonstrates positive association of XPD Arg751Gln polymorphism with an increased risk of SCCHN. Further, XRCC1 Arg280His variant though dormant individually, may also contribute to the development of cancer in combination with XPD Arg751Gln.
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Affiliation(s)
- Anil Kumar
- CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Lucknow, India
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Golka K, Selinski S, Lehmann ML, Blaszkewicz M, Marchan R, Ickstadt K, Schwender H, Bolt HM, Hengstler JG. Genetic variants in urinary bladder cancer: collective power of the “wimp SNPs”. Arch Toxicol 2011; 85:539-54. [DOI: 10.1007/s00204-011-0676-3] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Accepted: 02/09/2011] [Indexed: 02/07/2023]
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Li F, Li C, Jiang Z, Ma N, Gao X. XRCC3 T241M Polymorphism and Bladder Cancer Risk: A Meta-analysis. Urology 2011; 77:511.e1-5. [DOI: 10.1016/j.urology.2010.07.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2010] [Revised: 07/02/2010] [Accepted: 07/02/2010] [Indexed: 10/19/2022]
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Grotenhuis AJ, Vermeulen SH, Kiemeney LA. Germline genetic markers for urinary bladder cancer risk, prognosis and treatment response. Future Oncol 2011; 6:1433-60. [PMID: 20919828 DOI: 10.2217/fon.10.109] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
After decades of research using a candidate gene approach, only NAT2 and GSTM1 have consistently been demonstrated to be germline genetic susceptibility markers for urinary bladder cancer (UBC). The recent shift to an agnostic genome-wide association approach led to the identification of several UBC susceptibility loci, and provided valuable leads for new mechanistic insights into UBC carcinogenesis. The markers do not have sufficient discriminatory ability yet to be applied for risk assessment in the population and the question is whether they ever will. Prognostic and predictive studies in UBC are still in their infancy compared with etiologic studies. In the future, focus on a genome-wide association approach possibly using whole-genome sequence data, consortia formation and meta-analyses, and blood and tumor tissue collection, preferably in the context of randomized controlled trials will stimulate well designed and sufficiently powered studies, and thereby enhance the elucidation of genetic prognostic and predictive markers.
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Affiliation(s)
- Anne J Grotenhuis
- Department of Epidemiology, Biostatistics & HTA, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
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Ha YS, Yan C, Kim IY, Yun SJ, Moon SK, Kim WJ. Tissue hOGG1 genotype predicts bladder cancer prognosis: a novel approach using a peptide nucleic acid clamping method. Ann Surg Oncol 2010; 18:1775-81. [PMID: 21184188 DOI: 10.1245/s10434-010-1500-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2010] [Indexed: 01/02/2023]
Abstract
BACKGROUND Tissue genotyping is a more useful approach than using blood genomic DNA, because the tumor tissues can reflect the effects of somatic mutations in cancer. We investigated the value of the human oxoguanine glycosylase (hOGG1) genotype determined in tumor tissues as a prognostic indicator for bladder cancer (BC) using a novel technological approach. METHODS A total of 335 DNA samples from patients with primary BC were analyzed by peptide nucleic acid (PNA)-mediated real-time polymerase chain reaction (PCR) clamping to characterize the association between genetic polymorphisms within hOGG1 codon 326 and the clinicopathological characteristics of primary BC patients. RESULTS Tumor stage and number were significantly associated with the hOGG1 codon 326 genotype in nonmuscle invasive bladder cancer (NMIBC) patients. Compared with Cys326Ser and Ser326Ser, the Cys326Cys genotype had a greater progression-free survival benefit in patients with muscle invasive bladder cancer (MIBC). Univariate and multivariate Cox regression analyses indicated that the hOGG1 Cys326Cys genotype has a protective effect against progression in MIBC (hazard ratio, 0.360 and 0.314, respectively). CONCLUSIONS The hOGG1 tissue genotype is associated with aggressive clinicopathological features in NMIBC and with progression in patients with MIBC. Results suggest that the hOGG1 tissue genotype represents a promising marker for assessing BC prognosis in the clinical setting.
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Affiliation(s)
- Yun-Sok Ha
- Department of Urology, College of Medicine, Chungbuk National University, Cheongju, Chungbuk, South Korea
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Kim EJ, Yan C, Ha YS, Jeong P, Yi Kim I, Moon SK, Choi YH, Kim WJ. Analysis of hOGG1 genotype as a prognostic marker for muscle invasive bladder cancer: a novel approach using peptide nucleic acid-mediated, real-time PCR clamping. Urol Oncol 2010; 30:673-9. [PMID: 20884250 DOI: 10.1016/j.urolonc.2010.07.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2010] [Revised: 07/14/2010] [Accepted: 07/14/2010] [Indexed: 01/01/2023]
Abstract
OBJECTIVE DNA damage repair mechanisms are a source of genetic mutation and are believed to play an important role in human cancer. Human 8-oxoguanine DNA glycosylase 1 (hOGG1) is involved in the recognition and repair of DNA damage. The value of the hOGG1 genotype as a prognostic indicator for bladder cancer (BC) was assessed using a novel technological approach. MATERIALS AND METHODS The association between genetic polymorphisms of hOGG1 codon 326 and clinicopathologic characteristics of 337 patients with BC was analyzed using peptide nucleic acid (PNA)-mediated real-time PCR clamping. RESULTS Tumor grade and size were significantly associated with the hOGG1 codon 326 genotype in non-muscle-invasive bladder cancer (NMIBC). The Cys326Cys polymorphism was significantly associated with progression and cancer specific survival in patients with muscle-invasive bladder cancer (MIBC). Multivariate Cox regression analysis indicated that the hOGG1 Cys326Cys polymorphism is associated with a protective effect on progression and a more dominant survival benefit than the Ser326Ser polymorphism in MIBC (hazard ratio 0.284 and 0.305, respectively). CONCLUSIONS Analysis of genotypes and clinical data for 337 BC patients indicates that the hOGG1 genotype may be a useful prognostic genetic marker for MIBC.
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Affiliation(s)
- Eun-Jung Kim
- Department of Urology, College of Medicine, Chungbuk National University, Cheongju, Chungbuk, South Korea
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Bartz RR, Suliman HB, Fu P, Welty-Wolf K, Carraway MS, MacGarvey NC, Withers CM, Sweeney TE, Piantadosi CA. Staphylococcus aureus sepsis and mitochondrial accrual of the 8-oxoguanine DNA glycosylase DNA repair enzyme in mice. Am J Respir Crit Care Med 2010; 183:226-33. [PMID: 20732986 DOI: 10.1164/rccm.200911-1709oc] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Damage to mitochondrial DNA (mtDNA) by the production of reactive oxygen species during inflammatory states, such as sepsis, is repaired by poorly understood mechanisms. OBJECTIVES To test the hypothesis that the DNA repair enzyme, 8-oxoguanine DNA glycosylase (OGG1), contributes to mtDNA repair in sepsis. METHODS Using a well-characterized mouse model of Staphylococcus aureus sepsis, we analyzed molecular markers for mitochondrial biogenesis and OGG1 translocation into liver mitochondria as well as OGG1 mRNA expression at 0, 24, 48, and 72 hours after infection. The effects of OGG1 RNA silencing on mtDNA content were determined in control, tumor necrosis factor-α, and peptidoglycan-exposed rat hepatoma cells. Based on in situ analysis of the OGG1 promoter region, chromatin immunoprecipitation assays were performed for nuclear respiratory factor (NRF)-1 and NRF-2α GA-binding protein (GABP) binding to the promoter of OGG1. MEASUREMENTS AND MAIN RESULTS Mice infected with 10(7) cfu S. aureus intraperitoneally demonstrated hepatic oxidative mtDNA damage and significantly lower hepatic mtDNA content as well as increased mitochondrial OGG1 protein and enzyme activity compared with control mice. The infection also caused increases in hepatic OGG1 transcript levels and NRF-1 and NRF-2α transcript and protein levels. A bioinformatics analysis of the Ogg1 gene locus identified several promoter sites containing NRF-1 and NRF-2α DNA binding motifs, and chromatin immunoprecipitation assays confirmed in situ binding of both transcription factors to the Ogg1 promoter within 24 hours of infection. CONCLUSIONS These studies identify OGG1 as an early mitochondrial response protein during sepsis under regulation by the NRF-1 and NRF-2α transcription factors that regulate mitochondrial biogenesis.
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Affiliation(s)
- Raquel R Bartz
- Department of Anesthesiology, DUMC Box 3094, Durham, NC 27710, USA.
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Sun H, Qiao Y, Zhang X, Xu L, Jia X, Sun D, Shen C, Liu A, Zhao Y, Jin Y, Yu Y, Bai J, Fu S. XRCC3 Thr241Met polymorphism with lung cancer and bladder cancer: a meta-analysis. Cancer Sci 2010; 101:1777-82. [PMID: 20500515 PMCID: PMC11158960 DOI: 10.1111/j.1349-7006.2010.01608.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Several studies have investigated the associations between X-ray repair cross-complementing group 3 (XRCC3) Thr241Met polymorphism and the susceptibility to lung cancer and bladder cancer, but results have been inconclusive. In order to derive a more precise estimation of the relationship, a meta-analysis was performed. A total of 22 case control studies, including 2976 cases and 4495 controls for lung cancer, and 3445 cases and 4599 controls for bladder cancer, met the inclusion criteria and were selected. Overall, there was no evidence showing a significant association between XRCC3 Thr241Met polymorphism and lung cancer risk. Furthermore, the results for bladder cancer showed that significant decreased risk was found for the additive model (odds ratio [OR] = 0.959, 95% confidence interval [CI], 0.924-0.996) and dominant model (OR = 0.982, 95% CI, 0.963-1.000) but not for the recessive model (OR = 0.958, 95% CI, 0.905-1.014). In summary, our meta-analysis indicates that XRCC3 Thr241Met polymorphism may be weakly associated with the risk of bladder cancer. (Cancer Sci 2010).
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Mandal RK, Kapoor R, Mittal RD. Polymorphic variants of DNA repair gene XRCC3 and XRCC7 and risk of prostate cancer: a study from North Indian population. DNA Cell Biol 2010; 29:669-74. [PMID: 20590474 DOI: 10.1089/dna.2010.1047] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
DNA repair gene alterations may cause a reduction in DNA repair capacity and influence an individual's susceptibility to carcinogenesis. We hypothesized that single nucleotide polymorphisms of DNA repair genes may be a risk factor for prostate cancer (PCa) susceptibility, influencing expression of homologous recombination (XRCC3) and nonhomologous end-joining (XRCC7) genes and conferring predisposition to PCa. In a case-control study, genotyping was done in 192 patients with PCa and 224 age matched unrelated healthy controls of similar ethnicity to determine variants in XRCC3 Exon 7 (C18067T, rs861539), IVS5-14 (A17893G, rs1799796), and XRCC7 Intron 8 (G6721T, rs7003908) by polymerase chain reaction-restriction fragment-length polymorphism methods. Variant genotype GG (odds ratio [OR], 2.23; p=0.003) and combined genotype TG+GG (OR, 1.541; p=0.049), G allele of XRCC7 Intron 8 (G>T), demonstrated significant risk for PCa (OR, 1.529; p=0.002). Stratification on bases of Gleason grade and bone metastasis, significant risk with high Gleason grade for CT genotype of XRCC3 Exon 7, and variant genotype GG of XRCC7 Intron 8 were observed. Our results strongly support that common sequence variants (GG) genotype of XRCC7 may increase risk of PCa. G allele being a risk allele in our study also suggests that this polymorphism be used as a marker for the PCa susceptibility.
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Affiliation(s)
- Raju K Mandal
- Department of Urology and Renal Transplantation, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India
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