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The potential role of MGMT rs12917 polymorphism in cancer risk: an updated pooling analysis with 21010 cases and 34018 controls. Biosci Rep 2018; 38:BSR20180942. [PMID: 30232235 PMCID: PMC6435461 DOI: 10.1042/bsr20180942] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 09/12/2018] [Accepted: 09/14/2018] [Indexed: 02/06/2023] Open
Abstract
In the present study, we aimed at determining the potential role of rs12917 polymorphism of the O-6-methylguanine-DNA methyltransferase (MGMT) gene in the occurrence of cancer. Based on the available data from the online database, we performed an updated meta-analysis. We retrieved 537 articles from our database research and finally selected a total of 54 case–control studies (21010 cases and 34018 controls) for a series of pooling analyses. We observed an enhanced risk in cancer cases compared with controls, using the genetic models T/T compared with C/C (P-value of association test <0.001; odds ratio (OR) = 1.29) and T/T compared with C/C+C/T (P<0.001; OR = 1.32). We detected similar positive results in the subgroups ‘Caucasian’, and ‘glioma’ (all P<0.05; OR > 1). However, we detected negative results in our analyses of most of the other subgroups (P>0.05). Begg’s and Egger’s tests indicated that the results were free of potential publication bias, and sensitivity analysis suggested the stability of the pooling results. In summary, the T/T genotype of MGMT rs12917 is likely to be linked to an enhanced susceptibility to cancer overall, especially glioma, in the Caucasian population.
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Wu H, Huang XP, Xiang R, Wu MY, Guo X, Li Q, Luo XL. CHEK2 SNPs predict better prognosis in HBV-related hepatocellular carcinoma patients. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2018; 11:3165-3175. [PMID: 31938446 PMCID: PMC6958064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 07/25/2017] [Indexed: 06/10/2023]
Abstract
OBJECTIVE Checkpoint kinase 2 gene (CHEK2) is an important mediator of the DNA damage response pathway. Single nucleotide polymorphisms (SNPs) have been shown to influence the developing risk and clinical characteristics in various types of human malignancies. The values of CHEK2 SNPs in HBV-related hepatocellular carcinoma patients (HCC) were unknown and discussed here. METHODS The expression and prognostic prediction role of CHEK2 were searched and analyzed in HBV-related HCC patients by GEO database. SNPs in CHEK2 were genotyped by SNP selection tools, and further assessed their associations with clinical outcomes of 339 HBV-related HCC patients. RESULTS Patients with a higher CHEK2 gene expression predicted a worse relapse free survival (RFS). Moreover, those with a variant alleles CC/TT of SNPs rs1547014 and rs738722 had a significantly better prognosis when compared to the patients with CT genotype (P<0.015 for rs1547014, P=0.001 for rs738722), and CC/TT genotype combined with AFP≤400 ng/ml also predicted the best prognosis in HBV-related HCC patients. In stratified analysis, the protective effect of rs1547014 and rs738722 CC/TT genotype was more evident in patients with adverse strata, comparing the patients with favorable strata. CONCLUSION CHEK2 SNPs rs1547014 and rs738722 probably be potential prognostic bio-markers in HBV-related HCC patients.
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Affiliation(s)
- Hong Wu
- Department of Experimental Research, The Affiliated Tumor Hospital of Guangxi Medical UniversityNanning, Guangxi, China
- Department of Chest Surgery, Sichuan Cancer HospitalChengdu, Sichuan, China
| | - Xin-Ping Huang
- Department of Experimental Research, The Affiliated Tumor Hospital of Guangxi Medical UniversityNanning, Guangxi, China
- Shenzhen Hornetcorn Biotechnology Company, Ltd.Shenzhen, Guangdong, China
| | - Run Xiang
- Department of Experimental Research, The Affiliated Tumor Hospital of Guangxi Medical UniversityNanning, Guangxi, China
- Department of Chest Surgery, Sichuan Cancer HospitalChengdu, Sichuan, China
| | - Man-Ya Wu
- Department of Experimental Research, The Affiliated Tumor Hospital of Guangxi Medical UniversityNanning, Guangxi, China
| | - Xing Guo
- Department of Experimental Research, The Affiliated Tumor Hospital of Guangxi Medical UniversityNanning, Guangxi, China
| | - Qiang Li
- Department of Experimental Research, The Affiliated Tumor Hospital of Guangxi Medical UniversityNanning, Guangxi, China
- Department of Chest Surgery, Sichuan Cancer HospitalChengdu, Sichuan, China
| | - Xiao-Ling Luo
- Department of Experimental Research, The Affiliated Tumor Hospital of Guangxi Medical UniversityNanning, Guangxi, China
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Li S, Xie L, Du M, Xu K, Zhu L, Chu H, Chen J, Wang M, Zhang Z, Gu D. Association study of genetic variants in estrogen metabolic pathway genes and colorectal cancer risk and survival. Arch Toxicol 2018; 92:1991-1999. [PMID: 29766219 DOI: 10.1007/s00204-018-2195-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 03/21/2018] [Indexed: 12/22/2022]
Abstract
Although studies have investigated the association of genetic variants and the abnormal expression of estrogen-related genes with colorectal cancer risk, the evidence remains inconsistent. We clarified the relationship of genetic variants in estrogen metabolic pathway genes with colorectal cancer risk and survival. A case-control study was performed to assess the association of single-nucleotide polymorphisms (SNPs) in ten candidate genes with colorectal cancer risk in a Chinese population. A logistic regression model and Cox regression model were used to calculate SNP effects on colorectal cancer susceptibility and survival, respectively. Expression quantitative trait loci (eQTL) analysis was conducted using the Genotype-Tissue Expression (GTEx) project dataset. The sequence kernel association test (SKAT) was used to perform gene-set analysis. Colorectal cancer risk and rs3760806 in SULT2B1 were significantly associated in both genders [male: OR = 1.38 (1.15-1.66); female: OR = 1.38 (1.13-1.68)]. Two SNPs in SULT1E1 were related to progression-free survival (PFS) [rs1238574: HR = 1.24 (1.02-1.50), P = 2.79 × 10-2; rs3822172: HR = 1.30 (1.07-1.57), P = 8.44 × 10-3] and overall survival (OS) [rs1238574: HR = 1.51 (1.16-1.97), P = 2.30 × 10-3; rs3822172: HR = 1.53 (1.67-2.00), P = 2.03 × 10-3]. Moreover, rs3760806 was an eQTL for SULT2B1 in colon samples (transverse: P = 3.6 × 10-3; sigmoid: P = 1.0 × 10-3). SULT2B1 expression was significantly higher in colorectal tumor tissues than in normal tissues in the Cancer Genome Atlas (TCGA) database (P < 1.0 × 10-4). Our results indicated that SNPs in estrogen metabolic pathway genes confer colorectal cancer susceptibility and survival.
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Affiliation(s)
- Shuwei Li
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, 101 Longmian Avenue, Nanjing, 211166, Jiangsu, People's Republic of China
| | - Lisheng Xie
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, 101 Longmian Avenue, Nanjing, 211166, Jiangsu, People's Republic of China
| | - Mulong Du
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Biostatistics, Nanjing Medical University, Nanjing, People's Republic of China
| | - Kaili Xu
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, 101 Longmian Avenue, Nanjing, 211166, Jiangsu, People's Republic of China
| | - Lingjun Zhu
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Haiyan Chu
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, People's Republic of China.,Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, 101 Longmian Avenue, Nanjing, 211166, Jiangsu, People's Republic of China
| | - Jinfei Chen
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, Jiangsu, People's Republic of China
| | - Meilin Wang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, People's Republic of China. .,Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, People's Republic of China. .,Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, 101 Longmian Avenue, Nanjing, 211166, Jiangsu, People's Republic of China.
| | - Zhengdong Zhang
- Department of Environmental Genomics, Jiangsu Key Laboratory of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, People's Republic of China. .,Department of Genetic Toxicology, The Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, 101 Longmian Avenue, Nanjing, 211166, Jiangsu, People's Republic of China.
| | - Dongying Gu
- Department of Oncology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, Jiangsu, People's Republic of China.
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Leung AWY, Backstrom I, Bally MB. Sulfonation, an underexploited area: from skeletal development to infectious diseases and cancer. Oncotarget 2018; 7:55811-55827. [PMID: 27322429 PMCID: PMC5342455 DOI: 10.18632/oncotarget.10046] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 06/06/2016] [Indexed: 12/12/2022] Open
Abstract
Sulfonation is one of the most abundant cellular reactions modifying a wide range of xenobiotics as well as endogenous molecules which regulate important biological processes including blood clotting, formation of connective tissues, and functionality of secreted proteins, hormones, and signaling molecules. Sulfonation is ubiquitous in all tissues and widespread in nature (plants, animals, and microorganisms). Although sulfoconjugates were discovered over a century ago when, in 1875, Baumann isolated phenyl sulfate in the urine of a patient given phenol as an antiseptic, the significance of sulfonation and its roles in human diseases have been underappreciated until recent years. Here, we provide a current overview of the significance of sulfonation reactions in a variety of biological functions and medical conditions (with emphasis on cancer). We also discuss research areas that warrant further attention if we are to fully understand how deficiencies in sulfonation could impact human health which, in turn, could help define treatments to effect improvements in health.
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Affiliation(s)
- Ada W. Y. Leung
- Experimental Therapeutics, BC Cancer Research Centre, Vancouver, BC, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Ian Backstrom
- Experimental Therapeutics, BC Cancer Research Centre, Vancouver, BC, Canada
| | - Marcel B Bally
- Experimental Therapeutics, BC Cancer Research Centre, Vancouver, BC, Canada.,Department of Pathology and Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada.,Faculty of Pharmaceutical Sciences, University of British Columbia, Vancouver, BC, Canada.,Centre for Drug Research and Development, Vancouver, BC, Canada
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Kim JH, Hwang DK, Moon JY, Lee Y, Yoo JS, Shin DH, Lee HS. Multiple UDP-Glucuronosyltransferase and Sulfotransferase Enzymes are Responsible for the Metabolism of Verproside in Human Liver Preparations. Molecules 2017; 22:molecules22040670. [PMID: 28441724 PMCID: PMC6154560 DOI: 10.3390/molecules22040670] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 04/17/2017] [Accepted: 04/19/2017] [Indexed: 02/05/2023] Open
Abstract
Verproside, an active iridoid glycoside component of Veronica species, such as Pseudolysimachion rotundum var. subintegrum and Veronica anagallis-aquatica, possesses anti-asthma, anti-inflammatory, anti-nociceptive, antioxidant, and cytostatic activities. Verproside is metabolized into nine metabolites in human hepatocytes: verproside glucuronides (M1, M2) via glucuronidation, verproside sulfate (M3) via sulfation, picroside II (M4) and isovanilloylcatalpol (M5) via O-methylation, M4 glucuronide (M6) and M4 sulfate (M8) via further glucuronidation and sulfation of M4, and M5 glucuronide (M7) and M5 sulfate (M9) via further glucuronidation and sulfation of M5. Drug-metabolizing enzymes responsible for verproside metabolism, including sulfotransferase (SULT) and UDP-glucuronosyltransferase (UGT), were characterized. The formation of verproside glucuronides (M1, M2), isovanilloylcatalpol glucuronide (M7), and picroside II glucuronide (M6) was catalyzed by commonly expressed UGT1A1 and UGT1A9 and gastrointestinal-specific UGT1A7, UGT1A8, and UGT1A10, consistent with the higher intrinsic clearance values for the formation of M1, M2, M6, and M7 in human intestinal microsomes compared with those in liver microsomes. The formation of verproside sulfate (M3) and M5 sulfate (M9) from verproside and isovanilloylcatalpol (M5), respectively, was catalyzed by SULT1A1. Metabolism of picroside II (M4) into M4 sulfate (M8) was catalyzed by SULT1A1, SULT1E1, SULT1A2, SULT1A3, and SULT1C4. Based on these results, the pharmacokinetics of verproside may be affected by the co-administration of relevant UGT and SULT inhibitors or inducers.
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Affiliation(s)
- Ju-Hyun Kim
- Drug Metabolism & Bioanalysis Laboratory, College of Pharmacy, The Catholic University of Korea, Bucheon 14462, Korea.
| | - Deok-Kyu Hwang
- Drug Metabolism & Bioanalysis Laboratory, College of Pharmacy, The Catholic University of Korea, Bucheon 14462, Korea.
| | - Ju-Yeon Moon
- Drug Metabolism & Bioanalysis Laboratory, College of Pharmacy, The Catholic University of Korea, Bucheon 14462, Korea.
| | - Yongnam Lee
- Central R&D Institute, YUNGJIN PHARM. CO., LTD., Suwon 16229, Korea.
| | - Ji Seok Yoo
- Central R&D Institute, YUNGJIN PHARM. CO., LTD., Suwon 16229, Korea.
| | - Dae Hee Shin
- Central R&D Institute, YUNGJIN PHARM. CO., LTD., Suwon 16229, Korea.
| | - Hye Suk Lee
- Drug Metabolism & Bioanalysis Laboratory, College of Pharmacy, The Catholic University of Korea, Bucheon 14462, Korea.
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Xu W, Liu D, Yang Y, Ding X, Sun Y, Zhang B, Xu J, Su B. Association of CHEK2 polymorphisms with the efficacy of platinum-based chemotherapy for advanced non-small-cell lung cancer in Chinese never-smoking women. J Thorac Dis 2016; 8:2519-2529. [PMID: 27747004 DOI: 10.21037/jtd.2016.08.70] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Cell cycle checkpoint kinase 2 (CHEK2) plays an essential role in the repair of DNA damage. Single nucleotide polymorphisms (SNPs) in DNA repair genes are thought to influence treatment effects and survival of cancer patients. This study aimed to investigate the relationship between polymorphisms in the CHEK2 gene and efficacy of platinum-based doublet chemotherapy in never-smoking Chinese female patients with advanced non-small-cell lung cancer (NSCLC). METHODS Using DNA from blood samples of 272 Chinese advanced NSCLC non-smoking female patients treated with first-line platinum-based chemotherapy, we have analyzed the relationships between four SNPs in the CHEK2 gene and clinical outcomes. RESULTS We found that overall survival (OS) was significantly associated with CHEK2 rs4035540 (Log-Rank P=0.020), as well as the CHEK2 rs4035540 dominant model (Log-Rank P=0.026), especially in the lung adenocarcinoma group. After multivariate analysis, patients with rs4035540 A/G genotype had a significantly better OS than those with the G/G genotype (HR =0.67, 95% CI, 0.48-0.93; P=0.016). In the toxicity analysis, it was observed that patients with the CHEK2 rs4035540 A/A genotype had a higher risk of gastrointestinal toxicity than the G/G genotype group (P=0.009). However, there are no significant associations between chemotherapy treatments and genetic variations. CONCLUSIONS Our findings indicate that SNPs in CHEK2 are related to Chinese advanced NSCLC never-smoking female patients receiving platinum-based doublet chemotherapy in China. Patients with rs4035540 A/G genotype have a better OS. And patients with rs4035540 A/A genotype have a higher risk of gastrointestinal toxicity. These results point to a direction for predicting the prognosis for Chinese never-smoking NSCLC female patients. However, there are no significant associations between chemotherapy treatments and SNPs in CHEK2, which need more samples to the further study.
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Affiliation(s)
- Wen Xu
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Di Liu
- Department of Oncology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Yang Yang
- Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 200030, China
| | - Xi Ding
- Central Laboratory, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Yifeng Sun
- Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiaotong University, Shanghai 200030, China
| | - Baohong Zhang
- School of Pharmacy, Shanghai Jiaotong University, Shanghai 200240, China
| | - Jinfu Xu
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Bo Su
- Central Laboratory, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
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Liu J, Zhang R, Chen F, Yu C, Sun Y, Jia C, Zhang L, Salahuddin T, Li X, Lang J, Song X. MGMT Leu84Phe polymorphism contributes to cancer susceptibility: evidence from 44 case-control studies. PLoS One 2013; 8:e75367. [PMID: 24086516 PMCID: PMC3784571 DOI: 10.1371/journal.pone.0075367] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Accepted: 08/13/2013] [Indexed: 02/05/2023] Open
Abstract
Background O6-methylguanine-DNA methyltransferase is one of the few proteins to directly remove alkylating agents in the human DNA direct reversal repair pathway. A large number of case-control studies have been conducted to explore the association between MGMT Leu84Phe polymorphism and cancer risk. However, the results were not consistent. Methods We carried out a meta-analysis of 44 case-control studies to clarify the association between the Leu84Phe polymorphism and cancer risk. Results Overall, significant association of the T allele with cancer susceptibility was verified with meta-analysis under a recessive genetic model (P<0.001, OR=1.30, 95%CI 1.24-1.50) and TT versus CC comparison (P=0.001, OR=1.29, 95% CI 1.12-1.50). In subgroup analysis, a significant increased risk was found for lung cancer (TT versus CC, P=0.027, OR=1.67, 95% CI 1.06-2.63; recessive genetic model, P=0.32, OR=1.64, 95% CI 1.04-2.58), whereas risk of colorectal cancer was significantly low under a dominant genetic model (P=0.019, OR=0.84, 95% CI 0.72-0.97). Additionally, a significant association between TT genetic model and total cancer risk was found in the Caucasian population (TT versus CC, P=0.014, OR=1.29, 95% CI 1.05-1.59; recessive genetic model, P=0.009, OR=1.31, 95% CI 1.07-1.61), but not in the Asian population. An increased risk for lung cancer was also verified in the Caucasian population (TT versus CC, P=0.035, OR=1.62, 95% CI 1.04-2.53; recessive genetic model, P=0.048, OR=1.57, 95% CI 1.01-2.45). Conclusions These results suggest that MGMT Leu84Phe polymorphism might contribute to the susceptibility of certain cancers.
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Affiliation(s)
- Jun Liu
- Department of Otolaryngology Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Renxia Zhang
- Department of Anesthesia, Yuhuangding Hospital, Medical School of Qingdao University, Yantai, Shandong, China
| | - Fei Chen
- Department of Otolaryngology Head and Neck Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Cuicui Yu
- Department of Anesthesia, Yuhuangding Hospital, Medical School of Qingdao University, Yantai, Shandong, China
| | - Yan Sun
- Department of Otolaryngology Head and Neck Surgery, Yuhuangding Hospital, Medical School of Qingdao University, Yantai, Shandong, China
| | - Chuanliang Jia
- Department of Otolaryngology Head and Neck Surgery, Yuhuangding Hospital, Medical School of Qingdao University, Yantai, Shandong, China
- Binzhou Medical School, Yantai, Shandong, China
| | - Lijing Zhang
- Department of Otolaryngology Head and Neck Surgery, Yuhuangding Hospital, Medical School of Qingdao University, Yantai, Shandong, China
- Qingdao Medical School, Qingdao, Shandong, China
| | - Taufiq Salahuddin
- Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Xiaodong Li
- The 3People’s Hospital of Jinan, Jinan, Shandong, China
| | - Juntian Lang
- Department of Otolaryngology Head and Neck Surgery, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
- * E-mail: (XS); (J. Lang)
| | - Xicheng Song
- Department of Otolaryngology Head and Neck Surgery, Yuhuangding Hospital, Medical School of Qingdao University, Yantai, Shandong, China
- * E-mail: (XS); (J. Lang)
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Daniels J, Kadlubar S. Sulfotransferase genetic variation: from cancer risk to treatment response. Drug Metab Rev 2013; 45:415-22. [PMID: 24010997 DOI: 10.3109/03602532.2013.835621] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Cytosolic sulfotransferases (SULTs) are phase II detoxification enzymes that are involved in the biotransformation of a wide variety of structurally diverse endo- and xenobiotics. Single-nucleotide polymorphisms (SNPs) in SULTs can alter the phenotype of the translated proteins. SNPs in some SULTs are fairly uncommon in the population, but some, most notably for SULT isoform 1A1, are commonly found and have been associated with cancer risk for a variety of tumor sites and also with response to therapeutic agents. SNPs in many SULTs vary by ethnicity, another factor that could influence SULT-associated disease risk and pharmacogenetics. This review surveys the current knowledge of SULT genetic variability in relation to cancer risk and response to therapy, focusing primarily on SULT1A1.
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Affiliation(s)
- Jaclyn Daniels
- Department of Medical Genetics, College of Medicine, University of Arkansas for Medical Sciences , Little Rock, AR , USA
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Du L, Wang H, Xiong T, Ma Y, Yang J, Huang J, Zeng D, Wang X, Huang H, Huang J. The polymorphisms in the MGMT gene and the risk of cancer: a meta-analysis. Tumour Biol 2013; 34:3227-37. [PMID: 23760981 DOI: 10.1007/s13277-013-0893-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2013] [Accepted: 05/27/2013] [Indexed: 02/05/2023] Open
Abstract
Polymorphisms in the MGMT gene have been implicated in susceptibility to cancer, but the published studies have reported inconclusive results. The objective of the current study was to investigate the genetic risk of polymorphisms in the MGMT gene for cancer. A meta-analysis was carried out to analyze the association between polymorphisms in the MGMT gene and cancer risk. Five polymorphisms (Leu84Phe, Leu53Leu, Ile143Val, Lys178Arg, and -485C/A) with 98 case-control studies from 49 articles were analyzed. The results indicated that individuals who carried the Phe/Phe homozygote genotype of Leu84Phe had a 31 % increased risk of cancer compared with the Leu allele (Leu + Leu/Phe) carriers (odds ratio [OR] = 1.32, 95 % confidence interval [CI] = 1.15-1.52, P < 0.0001 for Phe/Phe vs. Phe/Leu + Leu/Leu). However, there was no significant association between the risk of cancer and the other four polymorphisms (Leu53Leu, Ile143Val, Lys178Arg, and -485C/A). In further stratified analyses for the Leu84Phe and Ile143Val polymorphisms, the increased risk of cancer remained in subgroups of Caucasians, patients with esophageal cancer for the Leu84Phe polymorphism, and patients with lung cancer for the Ile143Val polymorphism. Results from the current meta-analysis suggested that Leu84Phe and Ile143Val in the MGMT gene are risk factors for cancer. In the future, more studies should be performed to validate our results.
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Affiliation(s)
- Liang Du
- West China Medical School/West China Hospital, Sichuan University, Guoxuexiang 37, Chengdu, Sichuan, 610041, China
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Kumar G, Breen EJ, Ranganathan S. Identification of ovarian cancer associated genes using an integrated approach in a Boolean framework. BMC SYSTEMS BIOLOGY 2013; 7:12. [PMID: 23383610 PMCID: PMC3605242 DOI: 10.1186/1752-0509-7-12] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Accepted: 01/23/2013] [Indexed: 12/31/2022]
Abstract
Background Cancer is a complex disease where molecular mechanism remains elusive. A systems approach is needed to integrate diverse biological information for the prognosis and therapy risk assessment using mechanistic approach to understand gene interactions in pathways and networks and functional attributes to unravel the biological behaviour of tumors. Results We weighted the functional attributes based on various functional properties observed between cancerous and non-cancerous genes reported from literature. This weighing schema was then encoded in a Boolean logic framework to rank differentially expressed genes. We have identified 17 genes to be differentially expressed from a total of 11,173 genes, where ten genes are reported to be down-regulated via epigenetic inactivation and seven genes are up-regulated. Here, we report that the overexpressed genes IRAK1, CHEK1 and BUB1 may play an important role in ovarian cancer. We also show that these 17 genes can be used to form an ovarian cancer signature, to distinguish normal from ovarian cancer subjects and that the set of three genes, CHEK1, AR, and LYN, can be used to classify good and poor prognostic tumors. Conclusion We provided a workflow using a Boolean logic schema for the identification of differentially expressed genes by integrating diverse biological information. This integrated approach resulted in the identification of genes as potential biomarkers in ovarian cancer.
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Affiliation(s)
- Gaurav Kumar
- ARC Centre of Excellence in Bioinformatics and Department of Chemistry and Biomolecular Sciences, Macquarie University, Sydney, NSW 2109, Australia
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