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Fortes C, Mastroeni S, Levati L, Alotto M, Ricci F, D'Atri S. The potential impact of dietary choices on melanoma risk: an anti-inflammatory diet. GENES & NUTRITION 2024; 19:9. [PMID: 38783228 PMCID: PMC11119307 DOI: 10.1186/s12263-024-00745-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Accepted: 05/13/2024] [Indexed: 05/25/2024]
Abstract
The role of inflammation in the aetiology of cancer is recognized. However, no study yet examined the association between an anti-inflammatory diet and cutaneous melanoma and explored whether it could be modified by genetic variations in cyclooxygenase-2 (COX-2), a key enzyme in inflammation. A case-control study was conducted in the IDI-IRCCS hospital in Rome, Italy with 273 cases of primary cutaneous melanoma and 269 controls frequency matched to cases. Information on socio-demographic and pigmentary characteristics, medical history, sun exposure and dietary habits were collected for all subjects. The - 765G > C polymorphism was identified in DNA extracted from blood samples. An anti-inflammatory diet score was created. Logistic regression models were fitted to obtain odds ratios (ORs) and 95% confidence intervals (CIs). A high anti-inflammatory diet score (≥ 8 anti-inflammatory dietary items) was associated with a decreased risk of cutaneous melanoma (OR: 0.29; 95%CI: 0.17-0.49, Ptrend < 0.0001) after adjusting for sex, age, education, number of common nevi, skin photo-type, solar lentigines and sunburns in childhood. COX-2 -765 G > C polymorphism was not an independent risk factor for cutaneous melanoma. Although interaction between - 765G > C genotypes and anti-inflammatory diet score was not statistically significant (p = 0.25), when stratified by -765 G > C genotypes the effect of the anti-inflammatory diet was slightly more pronounced for participants carrying - 765GG (OR: 0.17; 95%CI: 0.06-0.47, Ptrend < 0.001). Our study findings suggest that adherence to an anti-inflammatory diet is associated with a decreased risk of developing cutaneous melanoma. These results suggest the potential impact of dietary choices on melanoma risk.
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Affiliation(s)
- Cristina Fortes
- Epidemiology Unit, Istituto Dermopatico dell'Immacolata, IDI, Via dei Monti di Creta, 104, Roma, 00167, Italy.
| | - Simona Mastroeni
- National Centre for Disease Prevention and Health Promotion, Italian National Institute of Health (ISS), Rome, Italy
| | | | - Massimo Alotto
- Epidemiology Unit, Istituto Dermopatico dell'Immacolata, IDI, Via dei Monti di Creta, 104, Roma, 00167, Italy
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2
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Jin M, Li G, Liu W, Wu X, Zhu J, Zhao D, Zeng Z, Xiong M, Song Y, He X, Zhang Q, Hu K. Cigarette smoking induces aberrant N 6-methyladenosine of DAPK2 to promote non-small cell lung cancer progression by activating NF-κB pathway. Cancer Lett 2021; 518:214-229. [PMID: 34298122 DOI: 10.1016/j.canlet.2021.07.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Revised: 06/29/2021] [Accepted: 07/17/2021] [Indexed: 12/15/2022]
Abstract
N6-methyladenosine (m6A) has recently emerged as an important regulatory mechanism for gene expression and aberrant m6A modification plays an important role in tumor progression. Emerging evidence has shown that aberrant m6A modification induced by cigarette smoking is involved in carcinogenesis, but whether cigarette smoking affects m6A modification and thus deteriorates to non-small cell lung cancer (NSCLC) is still unclear. Here, we identified a tumor suppressor gene-DAPK2 which was significantly associated with poor prognosis of NSCLC patients, especially in patients with a smoking history. Low levels of DAPK2 were detected in smokers and in NSCLC tissues. Cigarette smoking induced aberrant N6-methyladenosine modification of DAPK2, which resulted in decreased DAPK2 mRNA stability and expression of its mRNA and protein. This modification was mediated by the m6A "writer" METTL3 and the m6A "reader" YTHDF2. Mechanistically, we further demonstrated that DAPK2 functions as a tumor suppressor and downregulation of DAPK2 substantially enhances the proliferation and migration abilities in vitro and in vivo by activating NF-κB signaling pathway. Notably, the BAY 11-7085, a NF-κB signaling selective inhibitor, was shown to efficiently suppressed downregulation of DAPK2-induced oncogenic phenotypes of NSCLC cells. Our study reveals that cigarette smoking induces aberrant N6-methyladenosine of DAPK2 to promote NSCLC progression, which provides new insight into the mechanisms of NSCLC progression and a specific therapeutic target for NSCLC patients with a smoking history.
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Affiliation(s)
- Meng Jin
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China
| | - Guangcai Li
- Department of Respiratory and Critical Care Medicine, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi, 445000, China
| | - Wei Liu
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China
| | - Xiaofeng Wu
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China
| | - Jing Zhu
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China
| | - Dong Zhao
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China
| | - Zhaofu Zeng
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China
| | - Mengqing Xiong
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China
| | - Yan Song
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China
| | - Xin He
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China
| | - Qingfeng Zhang
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China
| | - Ke Hu
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Zhangzhidong Road No. 99, Wuhan, 430060, China.
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Ye ZM, Li LJ, Luo MB, Qing HY, Zheng JH, Zhang C, Lu YX, Tang YM. A systematic review and network meta-analysis of single nucleotide polymorphisms associated with pancreatic cancer risk. Aging (Albany NY) 2020; 12:25256-25274. [PMID: 33226370 PMCID: PMC7803556 DOI: 10.18632/aging.104128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 09/19/2020] [Indexed: 12/12/2022]
Abstract
In this meta-analysis, we systematically investigated the correlation between single nucleotide polymorphisms (SNPs) and pancreatic cancer (PC) risk. We searched PubMed, Network Science, EMBASE, Cochrane Library, China National Knowledge Infrastructure (CNKI), China Science and Technology Periodical Database (VIP), and Wanfang databases up to January 2020 for studies on PC risk-associated SNPs. We identified 45 case-control studies (36,360 PC patients and 54,752 non-cancer individuals) relating to investigations of 27 genes and 54 SNPs for this meta-analysis. Direct meta-analysis followed by network meta-analysis and Thakkinstian algorithm analysis showed that homozygous genetic models for CTLA-4 rs231775 (OR =0.326; 95% CI: 0.218-0.488) and VDR rs2228570 (OR = 1.976; 95% CI: 1.496-2.611) and additive gene model for TP53 rs9895829 (OR = 1.231; 95% CI: 1.143-1.326) were significantly associated with PC risk. TP53 rs9895829 was the most optimal SNP for diagnosing PC susceptibility with a false positive report probability < 0.2 at a stringent prior probability value of 0.00001. This systematic review and meta-analysis suggest that TP53 rs9895829, VDR rs2228570, and CTLA-4 rs231775 are significantly associated with PC risk. We also demonstrate that TP53 rs9895829 is a potential diagnostic biomarker for estimating PC risk.
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Affiliation(s)
- Zhuo-Miao Ye
- Department of Oncology, Xiangya Hospital, Central South University, Changsha 410008, China; Ruikang School of Clinical Medicine, Guangxi University of Chinese Medicine, Nanning 530001, China.,Ruikang School of Clinical Medicine, Guangxi University of Chinese Medicine, Nanning 530001, China
| | - Li-Juan Li
- The First Clinical Faculty of Guangxi University of Chinese Medicine, Guangxi University of Chinese Medicine, Nanning 530222, China
| | - Ming-Bo Luo
- Ruikang School of Clinical Medicine, Guangxi University of Chinese Medicine, Nanning 530001, China
| | - Hong-Yuan Qing
- Ruikang School of Clinical Medicine, Guangxi University of Chinese Medicine, Nanning 530001, China
| | - Jing-Hui Zheng
- Department of Cardiology, Ruikang Hospital Affiliated to Guangxi University of Chinese Medicine, Nanning 530011, China
| | - Chi Zhang
- Graduate School, Guangxi University of Chinese Medicine, Nanning 530001, Guangxi, China
| | - Yun-Xin Lu
- Department of Oncology, Ruikang Hospital Affiliated to Guangxi University of Chinese Medicine, Nanning 530011, China
| | - You-Ming Tang
- Department of Gastroenterology, Ruikang Hospital Affiliated to Guangxi University of Chinese Medicine, Nanning, China
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4
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Peng HH, Ko HH, Chi NC, Wang YP, Lee HC, Pan PY, Kuo MYP, Cheng SJ. Upregulated NPM1 is an independent biomarker to predict progression and prognosis of oral squamous cell carcinomas in Taiwan. Head Neck 2019; 42:5-13. [PMID: 31571325 DOI: 10.1002/hed.25971] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 08/08/2019] [Accepted: 09/06/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Nucleophosmin/nucleoplasmin family 1 (NPM1) has broad physiological functions, such as DNA replication, transcription, ribosome biogenesis, and centrosome replication. This study explored the clinicopathological importance of NPM1 as a prognostic marker for oral squamous cell carcinoma (OSCC). METHODS We collected specimens from 96 OSCC, 45 oral epithelial dysplasia (OED), and 29 normal oral mucosa (NOM). NPM1 expression was analyzed via immunohistochemistry. Correlations between NPM1and clinical parameters were analyzed using Student t test, chi-squared test, and Kaplan-Meier product-limit method. RESULTS The NPM1 labeling indices (LIs) were significantly higher in OSCCs than in NOM and oral OED. Higher NPM1 expression was significantly correlated with larger tumor size, nodal metastasis, and advanced clinical stage. Multivariate analysis revealed that higher NPM1 LIs were an unfavorable independent factor for survival. CONCLUSIONS Upregulated NPM1 is an independent biomarker of poor prognosis and NPM1 inhibitors may be promising in molecular targeted therapy against OSCC.
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Affiliation(s)
- Hsin-Hui Peng
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan.,Department of Dentistry, National Taiwan University Hospital, College of Medicine, Taipei, Taiwan.,Department of Dentistry, National Taiwan University Hospital Hsin-Chu Branch, College of Medicine, Hsin-Chu, Taiwan
| | - Hui-Hsin Ko
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan.,Department of Dentistry, National Taiwan University Hospital, College of Medicine, Taipei, Taiwan.,Department of Dentistry, National Taiwan University Hospital Hsin-Chu Branch, College of Medicine, Hsin-Chu, Taiwan
| | - Nai-Chi Chi
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan.,Department of Dentistry, National Taiwan University Hospital, College of Medicine, Taipei, Taiwan
| | - Yi-Ping Wang
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan.,Department of Dentistry, National Taiwan University Hospital, College of Medicine, Taipei, Taiwan.,School of Dentistry, National Taiwan University, Taipei, Taiwan
| | - Hsiang-Chieh Lee
- Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei, Taiwan
| | - Pei-Yao Pan
- Department of Dentistry, National Taiwan University Hospital, College of Medicine, Taipei, Taiwan
| | - Mark Yen-Ping Kuo
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan.,Department of Dentistry, National Taiwan University Hospital, College of Medicine, Taipei, Taiwan.,School of Dentistry, National Taiwan University, Taipei, Taiwan
| | - Shih-Jung Cheng
- Graduate Institute of Clinical Dentistry, School of Dentistry, National Taiwan University, Taipei, Taiwan.,Department of Dentistry, National Taiwan University Hospital, College of Medicine, Taipei, Taiwan.,School of Dentistry, National Taiwan University, Taipei, Taiwan
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5
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Kim IJ, Kim SH, Cha DH, Lim SW, Moon JY, Kim JO, Ryu CS, Park HS, Sung JH, Kim NK. Association of COX2 -765G>C promoter polymorphism and coronary artery disease in Korean population. Genes Genomics 2019; 41:1055-1062. [PMID: 31165994 DOI: 10.1007/s13258-019-00835-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 05/22/2019] [Indexed: 12/18/2022]
Abstract
BACKGROUND Cyclooxygenase-2 (COX2) plays a role in the formation of prostaglandins, which contribute to the inflammation involved in atherosclerosis. However, the role of the COX2 -765G>C polymorphism in susceptibility to coronary artery disease (CAD) is controversial. OBJECTIVE To identify the association between COX2 -765G>C polymorphism with CAD risk in Korean patients. We recruited 622 patients who were diagnosed to have coronary artery disease and 202 controls who did not have history and vascular disease risk factors. METHODS Using polymerase chain reaction-restriction fragment length polymorphism, the COX2 -765G>C polymorphism was analyzed in 622 Korean patients who received percutaneous coronary intervention and in 202 healthy control subjects. RESULTS The GC+CC genotype frequencies of the -765G>C polymorphism were significantly different between the CAD and control groups. The COX2 -765G>C polymorphism showed peculiar associations with CAD according to the presence of hyperlipidemia and plasma folate levels. However, there were no associations between the -765G>C polymorphism and the rates of hypertension, diabetes mellitus, or homocysteine levels. CONCLUSION This study suggests that the COX2 -765G>C polymorphism is a possible genetic determinant for the risk of CAD, and an individual risk factor in Koreans. Thus, further association studies between the COX2 polymorphism and atherosclerotic-related diseases such as cerebrovascular or cardiovascular diseases in other races or ethnicities will be needed.
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Affiliation(s)
- In Jai Kim
- Department of Cardiology, CHA Bundang Medical Center, School of Medicine, CHA University, 351 Yatap-dong, Bundang-gu, Seongnam, 13497, South Korea.,Department of Biomedical Science, College of Life Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam, 13488, South Korea
| | - Sang Hoon Kim
- Department of Cardiology, CHA Bundang Medical Center, School of Medicine, CHA University, 351 Yatap-dong, Bundang-gu, Seongnam, 13497, South Korea
| | - Dong Hoon Cha
- Department of Cardiology, CHA Bundang Medical Center, School of Medicine, CHA University, 351 Yatap-dong, Bundang-gu, Seongnam, 13497, South Korea
| | - Sang Wook Lim
- Department of Cardiology, CHA Bundang Medical Center, School of Medicine, CHA University, 351 Yatap-dong, Bundang-gu, Seongnam, 13497, South Korea
| | - Jae Youn Moon
- Department of Cardiology, CHA Bundang Medical Center, School of Medicine, CHA University, 351 Yatap-dong, Bundang-gu, Seongnam, 13497, South Korea
| | - Jung Oh Kim
- Department of Biomedical Science, College of Life Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam, 13488, South Korea
| | - Chang Soo Ryu
- Department of Biomedical Science, College of Life Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam, 13488, South Korea
| | - Han Sung Park
- Department of Biomedical Science, College of Life Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam, 13488, South Korea
| | - Jung Hoon Sung
- Department of Cardiology, CHA Bundang Medical Center, School of Medicine, CHA University, 351 Yatap-dong, Bundang-gu, Seongnam, 13497, South Korea.
| | - Nam Keun Kim
- Department of Biomedical Science, College of Life Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam, 13488, South Korea.
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6
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Zhang J, Bai R, Li M, Ye H, Wu C, Wang C, Li S, Tan L, Mai D, Li G, Pan L, Zheng Y, Su J, Ye Y, Fu Z, Zheng S, Zuo Z, Liu Z, Zhao Q, Che X, Xie D, Jia W, Zeng MS, Tan W, Chen R, Xu RH, Zheng J, Lin D. Excessive miR-25-3p maturation via N 6-methyladenosine stimulated by cigarette smoke promotes pancreatic cancer progression. Nat Commun 2019; 10:1858. [PMID: 31015415 PMCID: PMC6478927 DOI: 10.1038/s41467-019-09712-x] [Citation(s) in RCA: 251] [Impact Index Per Article: 50.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 03/26/2019] [Indexed: 12/15/2022] Open
Abstract
N6-methyladenosine (m6A) modification is an important mechanism in miRNA processing and maturation, but the role of its aberrant regulation in human diseases remained unclear. Here, we demonstrate that oncogenic primary microRNA-25 (miR-25) in pancreatic duct epithelial cells can be excessively maturated by cigarette smoke condensate (CSC) via enhanced m6A modification that is mediated by NF-κB associated protein (NKAP). This modification is catalyzed by overexpressed methyltransferase-like 3 (METTL3) due to hypomethylation of the METTL3 promoter also caused by CSC. Mature miR-25, miR-25-3p, suppresses PH domain leucine-rich repeat protein phosphatase 2 (PHLPP2), resulting in the activation of oncogenic AKT-p70S6K signaling, which provokes malignant phenotypes of pancreatic cancer cells. High levels of miR-25-3p are detected in smokers and in pancreatic cancers tissues that are correlated with poor prognosis of pancreatic cancer patients. These results collectively indicate that cigarette smoke-induced miR-25-3p excessive maturation via m6A modification promotes the development and progression of pancreatic cancer.
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MESH Headings
- Adenosine/analogs & derivatives
- Adenosine/metabolism
- Adult
- Aged
- Aged, 80 and over
- Carcinoma, Pancreatic Ductal/blood
- Carcinoma, Pancreatic Ductal/etiology
- Carcinoma, Pancreatic Ductal/mortality
- Carcinoma, Pancreatic Ductal/pathology
- Cell Line, Tumor
- Cell Transformation, Neoplastic/genetics
- Co-Repressor Proteins/metabolism
- DNA Methylation
- Disease Progression
- Epithelial Cells/pathology
- Female
- Follow-Up Studies
- Gene Expression Regulation, Neoplastic
- HEK293 Cells
- Humans
- Male
- Methyltransferases/genetics
- Methyltransferases/metabolism
- MicroRNAs/blood
- MicroRNAs/metabolism
- Middle Aged
- Nuclear Proteins/metabolism
- Pancreatic Ducts/cytology
- Pancreatic Ducts/pathology
- Pancreatic Neoplasms/blood
- Pancreatic Neoplasms/etiology
- Pancreatic Neoplasms/mortality
- Pancreatic Neoplasms/pathology
- Phosphoprotein Phosphatases/genetics
- Phosphoprotein Phosphatases/metabolism
- Prognosis
- Promoter Regions, Genetic/genetics
- Proto-Oncogene Proteins c-akt/metabolism
- RNA-Binding Proteins/metabolism
- Repressor Proteins
- Ribosomal Protein S6 Kinases, 70-kDa/metabolism
- Smoke/adverse effects
- Smoking/adverse effects
- Smoking/blood
- Nicotiana/toxicity
- Up-Regulation
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Affiliation(s)
- Jialiang Zhang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Ruihong Bai
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Mei Li
- Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Huilin Ye
- Department of Pancreaticobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Chen Wu
- Department of Etiology and Carcinogenesis, National Cancer Center/National Clinical Research Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- CAMS Key Laboratory of Genetics and Genomic Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Chengfeng Wang
- Department of Abdominal Surgery, National Cancer Center/National Clinical Research Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shengping Li
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Liping Tan
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Dongmei Mai
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Guolin Li
- Department of Pancreaticobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Ling Pan
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Yanfen Zheng
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Jiachun Su
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Ying Ye
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Zhiqiang Fu
- Department of Pancreaticobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Shangyou Zheng
- Department of Pancreaticobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhixiang Zuo
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Zexian Liu
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Qi Zhao
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Xu Che
- Department of Abdominal Surgery, National Cancer Center/National Clinical Research Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Dan Xie
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Weihua Jia
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Mu-Sheng Zeng
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Wen Tan
- Department of Etiology and Carcinogenesis, National Cancer Center/National Clinical Research Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- CAMS Key Laboratory of Genetics and Genomic Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Rufu Chen
- Department of Pancreaticobiliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.
| | - Rui-Hua Xu
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.
| | - Jian Zheng
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.
| | - Dongxin Lin
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.
- Department of Etiology and Carcinogenesis, National Cancer Center/National Clinical Research Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
- CAMS Key Laboratory of Genetics and Genomic Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Ozbayer C, Kebapci MN, Degirmenci I, Yagci E, Gunes HV, Kurt H. Genetic variant in the 3'-untranslated region of the COX2 gene is associated with type 2 diabetes: A hospital-based case-control study. Prostaglandins Leukot Essent Fatty Acids 2018; 137:39-42. [PMID: 30293595 DOI: 10.1016/j.plefa.2018.07.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 05/23/2018] [Accepted: 07/17/2018] [Indexed: 12/30/2022]
Abstract
Type 2 diabetes (T2DM) is caused by the decreased β-cell mass and insulin deficiency, and disease is characterized by hypoglycemia. The insulin resistance also plays an important role in T2DM pathogenesis. Insulin resistance is the reduced biological response to insulin at the normal concentration in the circulation and develops with the influence of environmental factors with genetic abnormalities. In recent years, it has been reported that inflammatory pathway causes activation of the insulin resistance. Chronic inflammation inhibits the insulin sensitivity through activation of signaling pathways which are directly associated with the key components of insulin signaling pathway. Cyclooxygenase (COX) enzymes are key enzymes that catalysis prostaglandin synthesis from arachidonic acid. COX2 is an inducible COX isoform and that plays an important role in inflammatory process by leading the synthesis of pro- and anti- inflammatory prostaglandins. In our study, we aimed to investigate the relationship between variants of COX-2 gene which is one of the key components of the inflammatory pathway, and T2DM risks. In this study, we evaluated rs5275 and rs689466 variants located on the COX-2 gene by PCR-RFLP in 100 T2DM patients and 100 control subjects. The interaction among COX2 variants and T2DM was analyzed using appropriate methods. The both variants were in Hardy-Weinberg equilibrium in patients and controls (p > 0.05). A significant association was observed for genotype distribution of COX2 rs5275 site between control and T2DM cases (p = 0.042). In a dominant model, the cases who had at least one copy of allele C, were at increased risk of T2DM (p = 0.016). We found no significant association for the COX2 rs689466 domain by evaluating homozygous, heterozygous, dominant, and recessive models (p > 0.05). According to our data, the rs5275 variant of the COX2 in the 3'-UTR may contribute to the etiology or modulate the risk of T2DM, whereas the rs689466 variant of the COX2 gene is not associated with T2DM risk.
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Affiliation(s)
- Cansu Ozbayer
- Faculty of Health Sciences, Health Sciences University, Kutahya, Turkey
| | - Medine Nur Kebapci
- Department of Endocrinologyrec, Medical Faculty, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Irfan Degirmenci
- Faculty of Health Sciences, Health Sciences University, Kutahya, Turkey; Department of Endocrinologyrec, Medical Faculty, Eskisehir Osmangazi University, Eskisehir, Turkey; Department of Medical Biology, Medical Faculty, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Emine Yagci
- Department of Medical Biology, Medical Faculty, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Hasan Veysi Gunes
- Department of Medical Biology, Medical Faculty, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Hulyam Kurt
- Department of Medical Biology, Medical Faculty, Eskisehir Osmangazi University, Eskisehir, Turkey.
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Li B, Wang L, Lei L, Zhang M, Niu F, Chen P, Jin T. Genetic polymorphisms of pharmacogenomic VIP variants in the Lisu population of southwestern China: A cohort study. Medicine (Baltimore) 2018; 97:e12231. [PMID: 30235667 PMCID: PMC6160020 DOI: 10.1097/md.0000000000012231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 08/14/2018] [Indexed: 11/26/2022] Open
Abstract
Pharmacogenomic studies of different ethnic or racial groups have been used to develop personalized therapies specific to subjects. This study aimed to identify the distribution differences of very important pharmacogenetic (VIP) variants between the Lisu population from southwestern China and other ethnic groups.Eighty VIP variants in 37 genes were selected from the pharmacogenomic knowledge base (PharmGKB), and compared with genotype data of the Lisu population then compared with other 11 populations from the HapMap dataset and previously published data including Miao, Li, Deng, Sherpa, Lhoba, Tibetan, Kirghiz, Tajik, Mongol, Shaanxi Han ethnic, and Uygur populations.VDR rs1540339, MTHFR rs1801131, P2RY1 rs701265, and PTGS2 rs689466 were significantly different between Lisu and 11 HapMap populations. ANKK1 rs1800497 was the least statistical significant locus among selected single nucleotide polymorphisms. In addition, genetic background of Lisu was strongly closest to Shaanxi Han ethnic cohort, and followed by Chinese in metropolitan Denver population based on population structure and F-statistics analyses.Our results showed significant interethnic differences between Lisu and other populations, which will give useful information for prospective studies and better individualized treatments.
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Affiliation(s)
- Bin Li
- Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education
| | - Li Wang
- Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education
| | - Lingyu Lei
- Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education
| | - Mingxiang Zhang
- Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education
| | - Fanglin Niu
- Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education
| | - Peng Chen
- Institution of Basic Medical Science, Xi’an Medical University, Xi’an
| | - Tianbo Jin
- Key Laboratory of Resource Biology and Biotechnology in Western China (Northwest University), Ministry of Education
- Key Laboratory of Molecular Mechanism and Intervention Research for Plateau Diseases of Tibet Autonomous Region
- Key Laboratory of High Altitude Environment and Genes Related to Diseases of Tibet Autonomous Region
- Key Laboratory for Basic Life Science Research of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, Shaanxi, China
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Li J, Lu X, Zou X, Jiang Y, Yao J, Liu H, Ni B, Ma H. COX-2 rs5275 and rs689466 polymorphism and risk of lung cancer: A PRISMA-compliant meta-analysis. Medicine (Baltimore) 2018; 97:e11859. [PMID: 30170377 PMCID: PMC6393127 DOI: 10.1097/md.0000000000011859] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Cyclooxygenase-2 (COX-2) is an inducible enzyme that mediates the synthesis of prostaglandin, which plays an important role in the inflammation response. The overexpression of COX-2 in lung cancer has been found in several studies, suggesting that COX-2 contributes to carcinogenesis. There are many previous case-control studies focused on the association between COX-2 polymorphism and lung cancer risk, however, the conclusion remained controversial. OBJECTIVES We performed this meta-analysis to evaluate the association between COX-2 rs5275 and rs689466 polymorphism and susceptibility to lung cancer. METHODS A systematic literature research was conducted on PubMed, Embase, Cochrane Library, OVID, Web of Science, and Google Scholar up to November 30, 2017. The quality of studies was assessed by Newcastle-Ottawa scale. We combined odds ratios (ORs) and 95% confidence intervals (CIs) in 5 different genetic models for evaluation under a fixed-effect model or random-effect model. Subgroup analysis was performed according to source of control, ethnicity, pathological types, and smoking status. Sensitivity analysis and publication bias were also conducted. RESULTS Eventually, 14 eligible studies were included in our meta-analysis. We found rs5275 gene polymorphism decreased the risk of lung cancer under heterozygote model (OR: 0.91, 95% CI: 0.84-0.98, P = .02). COX-2 rs689466 gene polymorphism was also related to a significantly reduced risk under allele (OR: 0.88, 95% CI: 0.82-0.95, P = .001), homozygote (OR: 0.81, 95% CI: 0.68-0.95, P = .01), heterozygote (OR: 0.81, 95% CI: 0.72-0.91, P < .001), and dominant model (OR: 0.81, 95% CI: 0.72-0.91, P < .001), except for recessive model. Subgroup analysis suggested a similar association in Asians, but not in Caucasians. Polymorphism of rs5275 was strongly associated with a reduced risk of lung adenocarcinoma according to stratified analysis by pathological types. Egger test identified no significant publication bias. CONCLUSIONS Our meta-analysis demonstrated that COX-2 rs5275 and rs689466 polymorphism significantly decrease the risk of lung cancer in Asians but not in Caucasians, indicating COX-2 could serve as a potential diagnostic marker for lung cancer.
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Affiliation(s)
| | | | | | - Yufeng Jiang
- Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou City, Jiangsu, P. R. China
| | - Jie Yao
- Department of Thoracic Surgery
| | | | - Bin Ni
- Department of Thoracic Surgery
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Li J, Guo C, Yan M, Niu F, Chen P, Li B, Jin T. Genetic polymorphisms in very important pharmacogenomic variants in the Zhuang ethnic group of Southwestern China: A cohort study in the Zhuang population. Medicine (Baltimore) 2018; 97:e0559. [PMID: 29703042 PMCID: PMC5944516 DOI: 10.1097/md.0000000000010559] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Pharmacogenomics, the study of the role of genetics in drug response, has recently become a focal point of research. Previous studies showed that genes associated with drug detoxification vary among different populations. However, pharmacogenomic information of the Zhuang ethnic group is scarce. The aim of the present study was to screen members of the Zhuang ethnicity in southwestern China for genotype frequencies of very important pharmacogenomic (VIP) variants and to determine the differences between the Zhuang ethnicity and other human populations.We genotyped 80 variants of VIP genes in 100 unrelated healthy Zhuang adults from the Yunnan province of China. Next, we analyzed the genotyping data with Structure and F-statistics (Fst).We compared our data with those of other populations using the HapMap data set, and observed that the frequency distribution of Zhuang population in Yunnan closely resembles that of JPT. Furthermore, population structure and Fst analysis showed that the Zhuang population is closely related to the Shaanxi Han population with respect to genetic background.Our study supplements existing information on Zhuang population pharmacogenomics and provides an extensive overview for developing personalized medicine.
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Affiliation(s)
- Jing Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Northwest University, Ministry of Education
| | - Chenghao Guo
- Xi’an 21st Century Precision Medicine Research Institute Co. Ltd
| | - Mengdan Yan
- Key Laboratory of Resource Biology and Biotechnology in Western China, Northwest University, Ministry of Education
| | - Fanglin Niu
- Key Laboratory of Resource Biology and Biotechnology in Western China, Northwest University, Ministry of Education
| | - Peng Chen
- Key Laboratory of Resource Biology and Biotechnology in Western China, Northwest University, Ministry of Education
| | - Bin Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Northwest University, Ministry of Education
| | - Tianbo Jin
- Key Laboratory of Resource Biology and Biotechnology in Western China, Northwest University, Ministry of Education
- Key Laboratory of Molecular Mechanism and Intervention Research for Plateau Diseases of Tibet Autonomous Region, School of Medicine, Xizang Minzu University
- Key Laboratory of High Altitude Environment and Genes Related to Diseases of Tibet Autonomous Region, School of Medicine
- Key Laboratory for Basic Life Science Research of Tibet Autonomous Region, School of Medicine, Xizang Minzu University, Xianyang, Shaanxi, China
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Wang Y, Yi XD, Lu HL. Influence of CYP2C9 and COX-2 Genetic Polymorphisms on Clinical Efficacy of Non-Steroidal Anti-Inflammatory Drugs in Treatment of Ankylosing Spondylitis. Med Sci Monit 2017; 23:1775-1782. [PMID: 28403136 PMCID: PMC5398431 DOI: 10.12659/msm.900271] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Background The aim of this study was to evaluate the relationships of CYP2C9 and COX-2 genetic polymorphisms with therapeutic efficacy of non-steroidal anti-inflammatory drugs (NSAIDs) in treatment of ankylosing spondylitis (AS). Material/Methods We enrolled 130 AS inpatients and outpatients in the Arthritis and Rheumatism Department of Peking University First Hospital and 106 healthy people getting routine check-ups between September 2013 and July 2014. CYP2C9 and COX-2 genetic polymorphisms were detected by PCR-RFLP. All AS patients underwent medical treatment and 12-week follow-up treatment. Score differences of BASDAI, ASAS20, ASAS50, and ASAS70 for AS patients with different genotypes before and after treatment were compared. Results In terms of COX-2-1290A/G and -1195G/A gene polymorphism genotype and allele frequency, the case group and control group were obviously different (all P<0.05), but CYP2C9*3 polymorphism genotype and allele frequency were not statistically different between the 2 groups (P>0.05). AS patients had improved BASDAI, ASAS20, ASAS50, and ASAS70 scores after they received NSAID treatment (all P<0.05). Furthermore, the efficacy of NSAID in treatment of AS and COX-2 gene −1290A/G and −1195G/A polymorphism were associated (all P<0.05), but it is not associated with CYP2C9 *3 polymorphism (all P>0.05). Conclusions COX-2-1290A/G and -1195G/A polymorphism may increase AS risk and they both can be considered as biological indicators for prediction of efficacy of NSAIDs in treatment of AS.
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Affiliation(s)
- Yu Wang
- Department of Orthopaedics, Peking University First Hospital, Beijing, China (mainland)
| | - Xiao-Dong Yi
- Department of Orthopaedics, Peking University First Hospital, Beijing, China (mainland)
| | - Hai-Lin Lu
- Department of Orthopaedics, Peking University First Hospital, Beijing, China (mainland)
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Zhao F, Cao Y, Zhu H, Huang M, Yi C, Huang Y. The -765G>C polymorphism in the cyclooxygenase-2 gene and digestive system cancer: a meta-analysis. Asian Pac J Cancer Prev 2015; 15:8301-10. [PMID: 25339021 DOI: 10.7314/apjcp.2014.15.19.8301] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Published data regarding associations between the -765G>C polymorphism in cyclooxygenase-2 (COX-2) gene and digestive system cancer risk have been inconclusive. The aim of this study was to comprehensively evaluate the genetic risk of the -765G>C polymorphism in the COX-2 gene for digestive system cancer. MATERIALS AND METHODS A search was performed in Pubmed, Medline (Ovid), Embase, CNKI, Weipu, Wanfang and CBM databases, covering all studies until Feb 10, 2014. Statistical analysis was performed using Revman5.2. RESULTS A total of 10,814 cases and 16,174 controls in 38 case-control studies were included in this meta-analysis. The results indicated that C allele carriers (GC+CC) had a 20% increased risk of digestive system cancer when compared with the homozygote GG (odds ratio (OR)=1.20, 95% confidence interval (CI), 1.00-1.44 for GC+CC vs GG). In the subgroup analysis by ethnicity, significant elevated risks were associated with C allele carriers (GC+CC) in Asians (OR = 1.46, 95% CI=1.07-2.01, and p=0.02) and Africans (OR=2.12, 95% CI=1.57-2.87, and p< 0.00001), but not among Caucasians, Americans and mixed groups. For subgroup analysis by cancer type (GC+CC vs GG), significant associations were found between the -765G>C polymorphism and higher risk for gastric cancer (OR=1.64, 95% CI=1.03-2.61, and p=0.04), but not for colorectal cancer, oral cancer, esophageal cancer, and others. Regarding study design (GC+CC vs GG), no significant associations were found in then population-based case-control (PCC), hospital-based case-control (HCC) and family-based case-control (FCC) studies. CONCLUSIONS This meta-analysis suggested that the -765G>C polymorphism of the COX-2 gene is a potential risk factor for digestive system cancer in Asians and Africans and gastric cancer overall.
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Affiliation(s)
- Fen Zhao
- Department of Pathophysiology, West China School of Preclinical and Forensic Medicine, Sichuan University, Sichuan Province, China E-mail :
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Xu YS, Zhao B, Long CY, Li H, Lu X, Liu G, Tang XZ, Tang WZ. Cyclooxygenase-2 promoter 765C increase of digestive tract cancer risk in the Chinese population: a meta-analysis. Asian Pac J Cancer Prev 2015; 15:4563-6. [PMID: 24969885 DOI: 10.7314/apjcp.2014.15.11.4563] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND To evaluate relationship between the cyclooxygenase-2 promoter 765G/C polymorphism and digestive cancer risk in China. MATERIALS AND METHODS A literature search through February 2014 was performed using PubMed, Chinese Biomedical Literature Database (CBM) and China National Knowledge Infrastructure (CNKI) databases, and a meta-analysis was performed with RevMan 5.2 software for odds ratios and 95%CIs. RESULTS In total, 9 articles with 3,263 cases and 4,858 controls were included in this meta-analysis.The pooled OR (95%CIs) in the co-dominant model (GC vs GG) was 1.56 [1.19, 2.06], and in the dominant model ((CC+GC) vs GG), the pooled OR was 1.59 [1.21, 2.09] in overall cancers. In the subgroup analysis, stratified by cancer type, significant associations were found that the-765C allele had increased pancreatic cancer and gastric risk. No significant liver cancer and colorectal cancer risk of COX-2 -765G/C polymorphism was found. CONCLUSIONS These findings suggest that COX-2-765*C is related to cancer susceptibility and may increase gastric and pancreatic cancer risk.
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Affiliation(s)
- Yan-Song Xu
- Department of Emergency, First Affiliated Hospital, Guangxi Medical University, Nanning, China E-mail :
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Yukawa T, Shimizu K, Maeda A, Yasuda K, Saisho S, Okita R, Nakata M. Cyclooxygenase-2 genetic variants influence intratumoral infiltration of Foxp3-positive regulatory T cells in non-small cell lung cancer. Oncol Rep 2014; 33:74-80. [PMID: 25338928 DOI: 10.3892/or.2014.3561] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 07/28/2014] [Indexed: 11/05/2022] Open
Abstract
The immune microenvironment of primary tumors has been reported to be a prognostic factor. We previously reported that the tumor-infiltrating regulatory T cell (Treg) count was positively correlated with the intratumoral cyclooxygenase-2 (COX-2) expression level and was associated with a poor survival among patients with non-small cell lung cancer (NSCLC). Recently, numerous single nucleotide polymorphisms (SNPs) in the COX-2 gene have been identified, and these SNPs may contribute to differential gene expression and enzyme activity levels. However, whether COX-2 genetic variants influence the functions of COX-2 in NSCLC remains unclear. Eighty NSCLC patients who underwent a complete resection at our institute were enrolled. We extracted DNA from the peripheral blood and identified five different COX-2 SNPs. The correlations between the COX-2 SNPs and the expression levels of COX-2, Tregs and Ki-67 were studied. The prognostic significance of the COX-2 SNPs was also evaluated. COX-2 SNPs were not correlated with the expression of COX-2. However, for the COX-2 -1195G/A polymorphism, the AA genotype group had a significantly higher Treg score. Furthermore, the AA group had a significantly higher Treg score regardless of the COX-2 expression level. The COX-2 -1195AA genotype group tended to have a shorter disease-free survival period than the GA/GG group. In conclusion, the COX-2 -1195G/A polymorphism influences the infiltration of Tregs into NSCLC, and the COX-2 SNP factor may be a prognostic factor reflecting Treg infiltration in NSCLC.
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Affiliation(s)
- Takuro Yukawa
- Department of General Thoracic Surgery, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Katsuhiko Shimizu
- Department of General Thoracic Surgery, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Ai Maeda
- Department of General Thoracic Surgery, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Koichiro Yasuda
- Department of General Thoracic Surgery, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Shinsuke Saisho
- Department of General Thoracic Surgery, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Riki Okita
- Department of General Thoracic Surgery, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
| | - Masao Nakata
- Department of General Thoracic Surgery, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan
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Liu L, Zhou F, Ren S, Chen X, Li X, Li W, Zhou C. Prognostic value of cyclooxygenase-2 gene polymorphisms in advanced non-small cell lung cancer patients treated with first-line platinum-based chemotherapy. Asia Pac J Clin Oncol 2014; 12:e339-46. [PMID: 25131817 DOI: 10.1111/ajco.12258] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/15/2014] [Indexed: 01/08/2023]
Abstract
AIM Cyclooxygenase-2 (COX-2) plays an important role in cell apoptosis, angiogenesis and tumor invasion, and over-expression of COX-2 is associated with tumor development and occurrence. The aim of this study is to investigate the association between COX-2 polymorphisms and clinical outcomes in advanced non-small cell lung cancer (NSCLC) patients treated with first-line platinum-based chemotherapy. METHODS A total of 190 patients with IIIB or IV NSCLC who received platinum-based chemotherapy were recruited in this study. Four functional COX-2 polymorphisms, including rs689465, rs689466, rs3218625 and rs20417, were genotyped by PCR-based restriction fragment length polymorphism methods. Kaplan-Meier methods were used to compare survival by different genotypes. Cox proportional hazard models were used to identify independently significant variables. RESULTS The rs689465 AA genotype was significantly associated with longer overall survival (OS) (13.0 months vs 8.8 months, P = 0.019 for log-rank test; hazard ratio [HR] 0.624; 95% confidence internal [CI] 0.418-0.931) and progression-free survival (5.3 months vs 4.0 months, P = 0.018 for log-rank test; HR 0.627; 95% CI 0.421-0.934) compared with AG or GG genotype, especially in patients with adenocarcinoma (P = 0.002), performance status of 1 (P = 0.009) and stage IV disease (P = 0.012), and treated with gemcitabine-based chemotherapy (P = 0.012). Multivariate regression analysis showed that COX-2 rs689465 polymorphism had a significantly independent prognostic value for OS (P = 0.017, HR = 1.637, 95% CI = 1.093-2.453). CONCLUSION Our study suggested that rs689465 polymorphism could be a prognostic biomarker for advanced NSCLC patients treated with first-line platinum-based chemotherapy.
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Affiliation(s)
- Lu Liu
- Department of Medical Oncology, Shanghai Pulmonary Hospital, Tongji University Medical School Cancer Institute, Tongji University School of Medicine, Shanghai, China
| | - Fei Zhou
- Department of Medical Oncology, Shanghai Pulmonary Hospital, Tongji University Medical School Cancer Institute, Tongji University School of Medicine, Shanghai, China
| | - Shengxiang Ren
- Department of Medical Oncology, Shanghai Pulmonary Hospital, Tongji University Medical School Cancer Institute, Tongji University School of Medicine, Shanghai, China
| | - Xiaoxia Chen
- Department of Medical Oncology, Shanghai Pulmonary Hospital, Tongji University Medical School Cancer Institute, Tongji University School of Medicine, Shanghai, China
| | - Xuefei Li
- Department of Lung Cancer and Immunology, Shanghai Pulmonary Hospital, Tongji University Medical School Cancer Institute, Tongji University School of Medicine, Shanghai, China
| | - Wei Li
- Department of Medical Oncology, Shanghai Pulmonary Hospital, Tongji University Medical School Cancer Institute, Tongji University School of Medicine, Shanghai, China
| | - Caicun Zhou
- Department of Medical Oncology, Shanghai Pulmonary Hospital, Tongji University Medical School Cancer Institute, Tongji University School of Medicine, Shanghai, China
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Bian LQ, Mao L, Shi J, Bi Y. Polymorphisms in cyclooxygenase-2 gene and risk of developing coal workers' pneumoconiosis: a case-control study. Am J Ind Med 2014; 57:866-71. [PMID: 24899082 DOI: 10.1002/ajim.22335] [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] [Accepted: 03/30/2014] [Indexed: 11/11/2022]
Abstract
BACKGROUND Coal workers' pneumoconiosis (CWP) is characterized by progressive pulmonary fibrosis. Inflammation is crucial in the host response to silica and it contributes to pulmonary fibrosis. Cyclooxygenase-2 is involved in this process. The association between single-nucleotide polymorphisms in cyclooxygenase-2 gene with pneumoconiosis risk was investigated. METHODS An association study was conducted by analyzing two single-nucleotide polymorphisms of cyclooxygenase-2 (rs689466 and rs20417) in a case-control study involving 90 patients and 90 healthy individuals (controls). Genotyping was performed by the TaqMan method. RESULTS The rs689466 AG and GG and rs689466 GC polymorphisms were significantly less frequent in patients than in controls. Cyclooxygenase-2 rs689466 and rs20417 variant genotypes exhibited 21% and 12% decreased CWP risk, respectively. CONCLUSION Cyclooxygenase-2 rs689466 and rs20417 polymorphisms were associated with CWP risk.
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Affiliation(s)
- Lu-Qin Bian
- Department of Pneumoconiosis, Shanghai Pulmonary Hospital, School of Medicine; Tongji University; Shanghai China
| | - Ling Mao
- Department of Pneumoconiosis, Shanghai Pulmonary Hospital, School of Medicine; Tongji University; Shanghai China
| | - Jin Shi
- Department of Pneumoconiosis, Shanghai Pulmonary Hospital, School of Medicine; Tongji University; Shanghai China
| | - Ying Bi
- Department of Pneumoconiosis, Shanghai Pulmonary Hospital, School of Medicine; Tongji University; Shanghai China
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Prognostic significance of cyclooxygenase-2 protein in pancreatic cancer: a meta-analysis. Tumour Biol 2014; 35:10301-7. [DOI: 10.1007/s13277-014-2260-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 06/18/2014] [Indexed: 02/06/2023] Open
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Wang XF, Huang MZ, Zhang XW, Hua RX, Guo WJ. COX-2-765G>C polymorphism increases the risk of cancer: a meta-analysis. PLoS One 2013; 8:e73213. [PMID: 24023834 PMCID: PMC3762903 DOI: 10.1371/journal.pone.0073213] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Accepted: 07/18/2013] [Indexed: 02/07/2023] Open
Abstract
Background Chronic inflammation has been regarded as an important mechanism in carcinogenesis. Inflammation-associated genetic variants have been highly associated with cancer risk. Polymorphisms in the gene cyclooxygenase-2 (COX-2), a pro-inflammation factor, have been suggested to alter the risk of multiple tumors, but the findings of various studies are not consistent. Methods A literature search through February 2013 was performed using PubMed, EMBASE, and CNKI databases. We used odds ratios (ORs) with confidence intervals (CIs) of 95% to assess the strength of the association between the COX-2-765G>C polymorphism and cancer risk in a random-effect model. We also assessed heterogeneity and publication bias. Results In total, 65 articles with 29,487 cancer cases and 39,212 non-cancer controls were included in this meta-analysis. The pooled OR (95% CIs) in the co-dominant model (GC vs. GG) was 1.11 (1.02–1.22), and in the dominant model ((CC+GC) vs. GG), the pooled OR was 1.12 (1.02–1.23). In the subgroup analysis, stratified by cancer type and race, significant associations were found between the-765 C allele and higher risk for gastric cancer, leukemia, pancreatic cancer, and cancer in the Asian population. Conclusion In summary, the COX-2-765 C allele was related to increased cancer susceptibility, especially gastric cancer and cancer in the Asian population.
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Affiliation(s)
- Xiao-feng Wang
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Ming-zhu Huang
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xiao-wei Zhang
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Rui-xi Hua
- Department of Medical Oncology, the First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Wei-jian Guo
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- * E-mail:
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Pereira C, Sousa H, Silva J, Brandão C, Elgueta-Karstegl C, Farrell PJ, Medeiros R, Dinis-Ribeiro M. The -1195G allele increases the transcriptional activity of cyclooxygenase-2 gene (COX-2) in colon cancer cell lines. Mol Carcinog 2013; 53 Suppl 1:E92-5. [PMID: 23776069 DOI: 10.1002/mc.22049] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Revised: 04/22/2013] [Accepted: 05/03/2013] [Indexed: 11/11/2022]
Abstract
Up-regulation of cyclooxygenase-2 (COX-2) is an early and key event in human colorectal carcinogenesis (CRC). Nevertheless, the molecular mechanisms leading to this over-expression are largely unknown. We previously reported an association between the -1195G allele and higher predisposition for CRC in a Caucasian population. The biological explanation for the involvement of this polymorphism in CRC remains elusive. We aimed to functionally characterize the influence of the -1195A>G promoter region polymorphism on COX-2 transcription activity in colon cancer cell lines. Luciferase reporter assays were performed to assess whether the -1195A/G alleles influenced COX-2 transcription. The COX-2 promoter's region containing either the -1195A or -1195G alleles was cloned into pGL3-basic reporter vector. The reporter vectors were transiently co-transfected with the pGL4.73 control plasmid to HCT-116 and HCA-7 colon cancer cell lines. The levels of reporter gene expression driven by the -1195G allele-containing COX-2 promoter were significantly higher in both colon cancer cell lines. A 2.2-fold increase in promoter activity was observed in the HCT-116 cell line (P < 0.001), and this over-expression was even more noticeable in the HCA-7 COX-2 expressing cell line with a threefold higher transcriptional activity (P = 0.001). The -1195G allele appeared to enhance COX-2 transcription, providing a molecular basis underlying the increased susceptibility for CRC and potentially a new mechanism for COX-2 overexpression.
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Affiliation(s)
- Carina Pereira
- Molecular Oncology Group, Investigation Centre, Portuguese Institute of Oncology, Porto, Portugal; Abel Salazar Institute of Biomedical Sciences, University of Porto, Porto, Portugal
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Zhou F, Gao G, Ren S, Li X, He Y, Zhou C. The association between COX-2 polymorphisms and hematologic toxicity in patients with advanced non-small-cell lung cancer treated with platinum-based chemotherapy. PLoS One 2013; 8:e61585. [PMID: 23620771 PMCID: PMC3631232 DOI: 10.1371/journal.pone.0061585] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Accepted: 03/11/2013] [Indexed: 12/24/2022] Open
Abstract
Background and Objective Overexpression of COX-2 is proved to contribute to tumor promotion and carcinogenesis through stimulating cell proliferation, inhibiting apoptosis and enhancing the invasiveness of cancer cells. Apoptosis-related molecules are potential predictive markers for survival and toxicity in platinum treatment. This study aimed at investigating the association between COX-2 polymorphisms and the occurrence of grade 3 or 4 toxicity in advanced non–small cell lung cancer patients treated with platinum-based chemotherapy. Materials and Methods Two hundred and twelve patients with inoperable stage IIIB-IV NSCLC received first-line chemotherapy between 2007 and 2009 were recruited in this study. Four functional COX-2 polymorphisms were genotyped by PCR-based restriction fragment length polymorphism (RFLP) methods. Results The incidence of grade 3 or 4 hematologic toxicity was significantly higher in G allele carriers of the COX-2 rs689466 (−1195G/A) polymorphism compared with wild-type homozygotes AA (P value = 0.008; odds ratio, 2.47; 95% confidence internal, 1.26–4.84) and the significance still existed after the Bonferroni correction. Statistically significant difference was also found in grade 3 or 4 leukopenia (P value = 0.010; OR = 2.82; 95%CI = 1.28–6.20). No other significant association was observed between genotype and toxicity in the study. The haplotype analysis showed that the haplotype AGG was associated with a reduced risk of grade 3 or 4 hematologic and leukopenia toxicity (P value = 0.009; OR = 0.59; 95%CI = 0.39–0.88 and P value = 0.025; OR = 0.61; 95%CI = 0.39–0.94, respectively) while the haplotype GGG was associated with an increased risk of grade 3 or 4 hematologic and leukopenia toxicity (P value = 0.009; OR = 1.71; 95%CI = 1.14–2.56 and P value = 0.025; OR = 1.65; 95%CI = 1.06–2.57, respectively). Conclusion This investigation for the first time suggested that polymorphism in COX-2 rs689466 may be a potent bio-marker in predicting severe hematologic toxicity in NSCLC patients after platinum-based chemotherapy.
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Affiliation(s)
- Fei Zhou
- Department of Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Tongji University Cancer Institute, Shanghai, China
| | - Guanghui Gao
- Department of Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Tongji University Cancer Institute, Shanghai, China
| | - Shengxiang Ren
- Department of Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Tongji University Cancer Institute, Shanghai, China
| | - Xuefei Li
- Department of Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Tongji University Cancer Institute, Shanghai, China
| | - Yayi He
- Department of Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Tongji University Cancer Institute, Shanghai, China
| | - Caicun Zhou
- Department of Oncology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Tongji University Cancer Institute, Shanghai, China
- * E-mail:
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quốc Lu’o’ng KV, Nguyễn LTH. The roles of beta-adrenergic receptors in tumorigenesis and the possible use of beta-adrenergic blockers for cancer treatment: possible genetic and cell-signaling mechanisms. Cancer Manag Res 2012; 4:431-45. [PMID: 23293538 PMCID: PMC3534394 DOI: 10.2147/cmar.s39153] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Cancer is the leading cause of death in the USA, and the incidence of cancer increases dramatically with age. Beta-adrenergic blockers appear to have a beneficial clinical effect in cancer patients. In this paper, we review the evidence of an association between β-adrenergic blockade and cancer. Genetic studies have provided the opportunity to determine which proteins link β-adrenergic blockade to cancer pathology. In particular, this link involves the major histocompatibility complex class II molecules, the renin-angiotensin system, transcription factor nuclear factor-kappa-light-chain-enhancer of activated B cells, poly(ADP-ribose) polymerase-1, vascular endothelial growth factor, and the reduced form of nicotinamide adenine dinucleotide phosphate oxidase. Beta-adrenergic blockers also exert anticancer effects through non-genomic factors, including matrix metalloproteinase, mitogen-activated protein kinase pathways, prostaglandins, cyclooxygenase-2, oxidative stress, and nitric oxide synthase. In conclusion, β-adrenergic blockade may play a beneficial role in cancer treatment. Additional investigations that examine β-adrenergic blockers as cancer therapeutics are required to further elucidate this role.
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Zhang Y, Liu CM, Peng HP, Zhang JZ, Cai XQ, Feng QL. Relationship between polymorphisms in the promoter region of the COX-2 gene and susceptibility to colorectal cancer. Shijie Huaren Xiaohua Zazhi 2012; 20:1579-1584. [DOI: 10.11569/wcjd.v20.i17.1579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the correlation between polymorphisms in the promoter region (-1195G/A, rs689466) and 3'-untranslated region (8473T/C, rs5275) of the cyclooxygenase-2 (COX-2) gene and risk of colorectal cancer (CRC).
METHODS: A case-control study was performed in 343 patients with CRC and 340 healthy individuals. The polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) method was used to genotype the COX-2-1195G/A and COX-2-8473T/C polymorphisms. The SPSS 10.0 software was used to analyze genotypic and allelic frequencies.
RESULTS: We found no differences in allele or genotype distributions of COX-2-8473T/C between cases and controls (all P > 0.05). However, there was an obvious difference in the polymorphism distribution of COX-2-1195G/A between the CRC group and control group (P < 0.001). Stratification analysis revealed a significantly increased risk in CRC patients carrying the AG genotype (adjusted OR = 2.23; 95% CI 1.50-3.32), AA genotype (adjusted OR = 2.46; 95% CI 1.51-4.02) or (AG/AA) genotype (adjusted OR = 2.27; 95% CI 1.55-3.34) compared to the control group. There was no difference in the distribution of each COX-2 genotype between colon and rectal cancer. Patients carrying the COX-2-1195A allele had a higher risk of lymph node metastasis and CRC progression.
CONCLUSION: COX-2-1195AG/AA genotype is associated with a higher risk of CRC, lymph node metastasis and CRC progression.
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Momi N, Kaur S, Ponnusamy MP, Kumar S, Wittel UA, Batra SK. Interplay between smoking-induced genotoxicity and altered signaling in pancreatic carcinogenesis. Carcinogenesis 2012; 33:1617-28. [PMID: 22623649 DOI: 10.1093/carcin/bgs186] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Despite continuous research efforts directed at early diagnosis and treatment of pancreatic cancer (PC), the status of patients affected by this deadly malignancy remains dismal. Its notoriety with regard to lack of early diagnosis and resistance to the current chemotherapeutics is due to accumulating signaling abnormalities. Hoarding experimental and epidemiological evidences have established a direct correlation between cigarette smoking and PC risk. The cancer initiating/promoting nature of cigarette smoke can be attributed to its various constituents including nicotine, which is the major psychoactive component, and several other toxic constituents, such as nitrosamines, 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone, and polycyclic aromatic hydrocarbons. These predominant smoke-constituents initiate a series of oncogenic events facilitating epigenetic alterations, self-sufficiency in growth signals, evasion of apoptosis, sustained angiogenesis, and metastasis. A better understanding of the molecular mechanisms underpinning these events is crucial for the prevention and therapeutic intervention against PC. This review presents various interconnected signal transduction cascades, the smoking-mediated genotoxicity, and genetic polymorphisms influencing the susceptibility for smoking-mediated PC development by modulating pivotal biological aspects such as cell defense/tumor suppression, inflammation, DNA repair, as well as tobacco-carcinogen metabolization. Additionally, it provides a large perspective toward tumor biology and the therapeutic approaches against PC by targeting one or several steps of smoking-mediated signaling cascades.
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Affiliation(s)
- Navneet Momi
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198-5870, USA
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Kim HY, Cho S, Choi YS, Yang HI, Lee KE, Seo SK, Lee BS. Cyclooxygenase-2 ( COX -2) gene-765G/C polymorphism and advanced-stage endometriosis in Korean women. Am J Reprod Immunol 2012; 68:238-43. [PMID: 22587873 DOI: 10.1111/j.1600-0897.2012.01151.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Accepted: 04/04/2012] [Indexed: 10/28/2022] Open
Abstract
PROBLEM We investigated the association of COX -2 gene-765G/C polymorphism and risk of advanced-stage endometriosis in Korean women. METHOD OF STUDY This study consisted of 268 women with advanced-stage endometriosis and 242 control women without endometriosis in Korea. Subjects were genotyped for the -765G/C polymorphism of the COX -2 gene by RFLP-PCR analysis. RESULTS There were significant differences in the genotype distributions of the -765G/C polymorphism between patients with advanced-stage endometriosis and control subjects. The C allele for -765G/C was associated with significantly lower risk of advanced-stage endometriosis (OR, 0.14; 95% CI, 0.06-0.30). CONCLUSIONS We have demonstrated a significant genetic association between the -765G/C polymorphism and advanced-stage endometriosis in Korean women. The -765C allele may be protective against the development of the disease in Korean women.
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Affiliation(s)
- Hye Yeon Kim
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Li P, Liu JW, Xu YH, Zhu SP, Guo F, Dong X. Parecoxib inhibits cell proliferation and induces apoptosis in human pancreatic cancer cell lines BxPC-3 and AsPC-1. Shijie Huaren Xiaohua Zazhi 2012; 20:675-679. [DOI: 10.11569/wcjd.v20.i8.675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effect of parecoxib on cell proliferation and apoptosis in human pancreatic cancer cell lines BxPC-3 and AsPC-1 and to explore possible mechanisms involved.
METHODS: After BxPC-3 and AsPC-1 cells were incubated with different concentrations of parecoxib, cell viability was measured by MTT assay to calculate the half maximal inhibitory concentration (IC50); cell apoptosis was evaluated by TUNEL assay; and the expression of COX-2 was detected RT-PCR.
RESULTS: Cell viability was apparently inhibited by parecoxib in both cell types, and the inhibitory effect was time- and dose-dependent. The IC50 values in the two cell lines were 400.98 μmol/L ± 10.78 μmol/L and 256.3 μmol/L ± 2.98 μmol/L, respectively. Treatment with parecoxib increased apoptosis rate and down-regulated COX-2 expression in both cell lines.
CONCLUSION: Parecoxib potently inhibits cell proliferation and induces apoptosis in human pancreatic cancer cell lines BxPC-3 and AsPC-1 possibly by suppressing the expression of COX-2.
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Duell EJ. Epidemiology and potential mechanisms of tobacco smoking and heavy alcohol consumption in pancreatic cancer. Mol Carcinog 2012; 51:40-52. [PMID: 22162230 DOI: 10.1002/mc.20786] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Tobacco smoking represents an important known cause of ductal pancreatic adenocarcinoma. Recent data from pooled analyses in consortia involving multiple case-control and cohort studies suggest that heavy (but not moderate or light) alcohol consumption also may increase pancreatic cancer risk. Animal and human evidence indicate that tobacco carcinogens and metabolites may act in concert and have both genetic and epigenetic effects at early and later stages in pancreatic tumorigenesis. One of the more important tobacco-related carcinogens, NNK, probably acts via multiple pathways. Heavy alcohol consumption may increase pancreatic cancer risk by potentiating the effects of other risk factors such as tobacco smoking, poor nutrition, and inflammatory pathways related to chronic pancreatitis, but also may have independent genetic and epigenetic effects. Animal and human studies of tobacco- and alcohol-related pancreatic carcinogenesis suggest multi-modal, overlapping mechanistic pathways. Tobacco smoking and heavy alcohol consumption are preventable exposures, and their avoidance would substantially decrease the burden of pancreatic cancer worldwide.
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Affiliation(s)
- Eric J Duell
- Unit of Nutrition, Environment and Cancer, Epidemiology Research Program, Catalan Institute of Oncology, Bellvitge Biomedical Research Institute, L'Hospitalet de Llobregat, Barcelona, Spain
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Genome-wide association study identifies five loci associated with susceptibility to pancreatic cancer in Chinese populations. Nat Genet 2011; 44:62-6. [PMID: 22158540 DOI: 10.1038/ng.1020] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Accepted: 11/03/2011] [Indexed: 12/14/2022]
Abstract
Pancreatic cancer has the lowest survival rate among human cancers, and there are no effective markers for its screening and early diagnosis. To identify genetic susceptibility markers for this cancer, we carried out a genome-wide association study on 981 individuals with pancreatic cancer (cases) and 1,991 cancer-free controls of Chinese descent using 666,141 autosomal SNPs. Promising associations were replicated in an additional 2,603 pancreatic cancer cases and 2,877 controls recruited from 25 hospitals in 16 provinces or cities in China. We identified five new susceptibility loci at chromosomes 21q21.3, 5p13.1, 21q22.3, 22q13.32 and 10q26.11 (P = 2.24 × 10(-13) to P = 4.18 × 10(-10)) in addition to 13q22.1 previously reported in populations of European ancestry. These results advance our understanding of the development of pancreatic cancer and highlight potential targets for the prevention or treatment of this cancer.
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Zheng J, Chen S, Jiang L, You Y, Wu D, Zhou Y. Functional genetic variations of cyclooxygenase-2 and susceptibility to acute myeloid leukemia in a Chinese population. Eur J Haematol 2011; 87:486-93. [DOI: 10.1111/j.1600-0609.2011.01691.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
OBJECTIVES DNA sequence variants in the cyclooxygenase-2 (COX-2) gene may lead to altered COX-2 production and/or activity, resulting in interindividual differences in susceptibility to pancreatic cancer. To test this hypothesis, we investigated the relationship between polymorphisms in the COX-2 gene and the risk of pancreatic cancer in a European population. METHODS The COX-2 genotypes for 7 single-nucleotide polymorphisms (rs2745557, rs5277, rs2066826, rs4648261, rs4648262, rs2206593, and rs5275) were determined in 162 pancreatic cancer patients and 170 control subjects without cancer who were matched for age and sex. Data analysis was by conditional logistic regression analysis, adjusting for age, sex, and smoking. RESULTS Two haplotypes (GGAGGGT and GCGGGGT for rs2745557, rs5277, rs2066826, rs4648261, rs4648262, rs2206593, rs5275, respectively) were more frequent among the patients compared with control subjects (P < 0.024), although no individually statistically significant associations for the 7 single-nucleotide polymorphisms studied were detected. CONCLUSIONS Our findings suggest the individual polymorphisms we studied in the COX-2 gene are not associated with risk of pancreatic cancer. However, the finding of a modest association with 2 haplotypes might be consistent with a small effect, which could be also seen at the genotype level had more samples been available.
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Huang L, Yu D, Wu C, Zhai K, Jiang G, Cao G, Wang C, Liu Y, Sun M, Li Z, Tan W, Lin D. Copy number variation at 6q13 functions as a long-range regulator and is associated with pancreatic cancer risk. Carcinogenesis 2011; 33:94-100. [PMID: 22016467 DOI: 10.1093/carcin/bgr228] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Copy number variations (CNVs) have been recognized to contribute to phenotypic variations and to be associated with susceptibility to certain complex diseases. This study examined the functional significance of CNVR2966.1 at 6q13 and its association with pancreatic cancer susceptibility. The CNVR2966.1 was found to be a 10,379 bp nucleotides deletion/insertion within the uniform boundaries chromosome 6: 74 648 791-74 659 169. Luciferase reporter gene assays revealed an active regulator in CNVR2966.1, which was demonstrated by circular chromosome conformation capture assays to physically interact with the upstream functional sequence of CDKN2B. CDKN2B transcription levels in pancreatic tissues were therefore significantly higher in individuals with two copies of CNVR2966.1 than in those with low copy number of CNVR2966.1. The risk of pancreatic cancer observed in 1027 cases and 1031 controls was significantly associated with copy number of CNVR2966.1, with the odds ratio being 1.31 (95% confidence interval = 1.08-1.60; P = 0.007) for one copy genotype compared with two copies genotype. These results suggest that CNVR2966.1 is associated with pancreatic cancer risk probably owing to its effect on long-range regulation of CDKN2B.
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Affiliation(s)
- Liming Huang
- State Key Laboratory of Molecular Oncology and Department of Etiology and Carcinogenesis, Cancer Institute and Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Talar-Wojnarowska R, Gasiorowska A, Olakowski M, Lampe P, Smolarz B, Romanowicz-Makowska H, Malecka-Panas E. Role of cyclooxygenase-2 gene polymorphisms in pancreatic carcinogenesis. World J Gastroenterol 2011; 17:4113-7. [PMID: 22039326 PMCID: PMC3203363 DOI: 10.3748/wjg.v17.i36.4113] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Revised: 03/26/2011] [Accepted: 04/02/2011] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate the clinical significance of -765G/C and -1195G/A cyclooxygenase-2 (COX-2) gene polymorphisms in patients with pancreatic cancer (PC).
METHODS: The study included 201 patients: 85 with PC and 116 healthy controls. -765G/C and -1195G/A COX-2 gene polymorphisms were studied in DNA isolated from blood samples. The associations of the analyzed genotypes and clinical data at diagnosis were evaluated.
RESULTS: We found an increased frequency of the homozygous -1195AA COX-2 genotype in patients with PC (53.7%) compared with the control group (21%) (P < 0.01). In contrast, the distribution of genotype and allele frequencies of the -765G/C COX-2 polymorphism in the PC patients were not different from those in control groups. A correlation between presence of homozygous -1195AA COX-2 genotype and tumor size > 3 cm was observed (P < 0.05). Analyzed polymorphisms were unrelated to the patients’ sex and age, nor to the presence of regional or distant metastases.
CONCLUSION: These preliminary results indicate that the -1195G/A COX-2 polymorphism may play an important role in PC prognosis and carcinogenesis.
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Lochan R, Reeves HL, Daly AK, Charnley RM. The role of tobacco-derived carcinogens in pancreas cancer. ISRN ONCOLOGY 2011; 2011:249235. [PMID: 22084727 PMCID: PMC3196993 DOI: 10.5402/2011/249235] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Accepted: 05/14/2011] [Indexed: 01/17/2023]
Abstract
The extremely poor outcome from pancreas cancer is well known. However, its aetiology less well appreciated, and the molecular mechanisms underlying this are poorly understood. Tobacco usage is one of the strongest risk factors for this disease, and this is a completely avoidable hazard. In addition, there are well described hereditary diseases which predispose, and familial pancreas cancer. We have sought here to summarise the role of tobacco-derived carcinogens and the mode of their tumorigenic action on the pancreas. There is compelling evidence from animal and human studies (laboratory including cell line studies and epidemiologic) that tobacco derived carcinogens cause pancreas cancer. However, the manner in which they do so is not entirely apparent. There is also compelling evidence that synergism with genetic and other life-style factors-like diet obesity-results in a multifactorial causation of the disease. Ascertaining the role of tobacco carcinogens in the development of this cancer and their interaction with other risk factors will enable novel therapeutic and preventative strategies to improve outcome from this appalling malignancy.
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Affiliation(s)
- Rajiv Lochan
- Hepato-Pancreato-Biliary Unit, Department of Surgery, Freeman Hospital, Newcastle upon Tyne NE7 7DN, UK
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Zhang XM, Zhong R, Liu L, Wang Y, Yuan JX, Wang P, Sun C, Zhang Z, Song WG, Miao XP. Smoking and COX-2 functional polymorphisms interact to increase the risk of gastric cardia adenocarcinoma in Chinese population. PLoS One 2011; 6:e21894. [PMID: 21779349 PMCID: PMC3136492 DOI: 10.1371/journal.pone.0021894] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2011] [Accepted: 06/08/2011] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Over-expression and increased activity of cyclooxygenase (COX)-2 induced by smoking has been implicated in the development of cancer. This study aimed to explore the interaction between smoking and functional polymorphisms of COX-2 in modulation of gastric cardia adenocarcinoma (GCA) risk. METHODS AND FINDINGS Three COX-2 polymorphisms, including -1195G>A (rs689466), -765G>C (rs20417), and 587Gly>Arg (rs3218625), were genotyped in 357 GCA patients and 985 controls. In the multivariate logistic regression analysis, we found that the -1195AA, -765GC, and 587Arg/Arg genotypes were associated with increased risk of GCA (OR = 1.50, 95% CI = 1.05-2.13; OR = 2.06, 95% CI = 1.29-3.29 and OR = 1.67, 95% CI = 1.04-2.66, respectively). Haplotype association analysis showed that compared with G(-1195)-G(-765)- G(Gly587Arg), the A(-1195)-C(-765)-A(Gly587Arg) conferred an increased risk of GCA (OR = 2.49, 95% CI = 1.54-4.01). Moreover, significant multiplicative interactions were observed between smoking and these three polymorphisms of -1195G>A, -765G>C, and 587Gly>Arg, even after correction by false discovery rate (FDR) method for multiple comparisons (FDR-P(interaction) = 0.006, 5.239×10(-4) and 0.017, respectively). Similarly, haplotypes incorporating these three polymorphisms also showed significant interaction with smoking in the development of GCA (P for multiplicative interaction = 2.65×10(-6)). CONCLUSION These findings indicated that the functional polymorphisms of COX-2, in interaction with smoking, may play a substantial role in the development of GCA.
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Affiliation(s)
- Xue-Mei Zhang
- Department of Molecular Biology, College of Life Sciences, Hebei United University, Tangshan, China
- * E-mail: (XM); (XZ)
| | - Rong Zhong
- Ministry of Education Key Lab of Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Li Liu
- Ministry of Education Key Lab of Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ying Wang
- Ministry of Education Key Lab of Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ju-Xiang Yuan
- Department of Epidemiology, College of Public Health, Hebei United University, Tangshan, China
| | - Peng Wang
- Ministry of Education Key Lab of Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chuang Sun
- Ministry of Education Key Lab of Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhi Zhang
- Department of Oncology, Tangshan Gongren Hospital, Tangshan, China
| | - Wen-Guang Song
- Department of Oncology, Tangshan Gongren Hospital, Tangshan, China
| | - Xiao-Ping Miao
- Ministry of Education Key Lab of Environment and Health, Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- * E-mail: (XM); (XZ)
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Courivaud C, Bamoulid J, Ferrand C, Tiberghien P, Chalopin JM, Saas P, Ducloux D. The COX-2 gene promoter polymorphism -765 delays CD4 T-cell reconstitution after lymphocyte depletion with antithymocyte globulins. Hum Immunol 2011; 72:1060-3. [PMID: 21782872 DOI: 10.1016/j.humimm.2011.05.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2011] [Revised: 05/10/2011] [Accepted: 05/20/2011] [Indexed: 11/19/2022]
Abstract
Polyclonal antithymocyte globulins (ATG) induce persistent changes in T-lymphocyte subsets characterized by low CD4 T. The mechanisms remain partly unknown. Prostaglandin E(2) (PGE(2)) is involved in lymphocyte homeostasis. Whether PGE(2) may be involved in persistent CD4 T-cell lymphopenia after ATG is unknown. We examined the association between this polymorphism and CD4 T-cell count in 159 renal transplant recipients (RTR) who received ATG. Analysis of these patients identified 6 CC (3.8%), 32 GC (22.6%), and 117 GG (73.6%) genotypes. Patients with the GG genotype had significantly higher serum PGE(2) concentrations, leading us to compare C carriers with GG patients. Carriers of the C allele had lower CD4 T cell count 1 year (235 ± 96 vs 323 ± 227/mm(3); p = 0.022) and 2 years posttransplant (325 ± 79 vs 422 ± 231/mm(3); p = 0.024). In multivariate analysis, the C allele (p = 0.029) conferred an increased risk of posttransplant CD4 T-cell lymphocytopenia. Pretransplant T-cell receptor excision circle levels were lower in C carriers. COX-2 gene promoter polymorphism at position -765 (G → C) is associated with persistent CD4 T-cell lymphopenia after ATG in RTR. This effect is likely to be mediated by the actions of PGE(2) on thymus function and viability.
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Tang Z, Nie ZL, Pan Y, Zhang L, Gao L, Zhang Q, Qu L, He B, Song G, Zhang Y, Shukui Wang. The Cox-2 -1195 G > A polymorphism and cancer risk: a meta-analysis of 25 case-control studies. Mutagenesis 2011; 26:729-34. [PMID: 21734230 DOI: 10.1093/mutage/ger040] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Cyclooxygenase 2 (Cox-2, a rate-limiting enzyme in the conversion of arachidonic acid to prostanoids) has been implicated in several physiological and pathological processes, and it has been reported that polymorphisms in the regulatory region of Cox-2 might influence its expression, contributing to the interindividual susceptibility to cancer. However, results from published studies on the association between the Cox-2 -1195G > A polymorphism and the risk of cancer are conflicting. We performed a meta-analysis based on 25 case-control studies, including a total of 9482 cancer cases and 12 206 controls to derive a more precise estimation of the association and its possible influence on cancer risk. We used odds ratios (ORs) with 95% confidence intervals (CIs) to assess the strength of the association. The overall results indicated that the variant genotypes moderately increased risk of cancer (AA/AG versus GG, OR = 1.15, 95% CI: 1.02-1.31). In the stratified analysis for the -1195G > A polymorphism, a proximate association was observed in Asian populations (AA/AG versus GG, OR = 1.28, 95% CI: 1.12-1.46), but no significant association except for oesophageal cancer and 'others' was found when stratified by cancer type. In conclusion, our meta-analysis indicates that -1195G > A of Cox-2 is a low penetration risk factor for cancer.
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Affiliation(s)
- Zhipeng Tang
- Central Laboratory of Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing 210006, China
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Functional polymorphism of cyclooxygenase-2 gene (G-765C) in chronic obstructive pulmonary disease patients. Mol Biol Rep 2011; 39:2163-7. [PMID: 21655952 DOI: 10.1007/s11033-011-0964-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Accepted: 05/26/2011] [Indexed: 12/16/2022]
Abstract
Cyclooxygenase two (COX-2) is an important enzyme metabolizing arachidonic acid. In contrast to constitutive cyclooxygenase one (COX-1), COX-2 is induced by proinflammatory factors. Polymorphism -765 G/C in COX-2-encoding gene promoter is associated with development of Alzheimer's disease, depression, carcinoma of the pancreas in smokers, breast cancer and rheumatoid arthritis. It is interesting whether the -765 G/C polymorphism in COX-2-encoding gene promoter can be associated with COPD, a disease which is inflammatory in character. It is highly probable as the breast and pancreas cancers, whose associations with the analyzed polymorphism have been studied, are smoking-dependent tumors. Additionally, tobacco smoke has been demonstrated to induce COX-2 in the lungs. The study group consisted of 122 COPD patients (48 females, 74 males). The control group consisted of 149 healthy nonsmoking subjects (83 females, 66 males). Polymerase chain reaction/restriction fragment length polymorphism was used for genotyping. A statistically significant difference in genotype distribution was observed as a result of the comparison between healthy subjects and patients with COPD. The distribution of alleles in both groups conformed with Hardy-Weinberg equilibrium. In the group of COPD patients, GG allele was found in 79 subjects, GC in 36, and CC in 7 subjects (F = 0.094, P = 0.296927); in the control group, 73 subjects had GG allele, 68--GC and 8--CC (F = 0.12728, P = 0.120265). The allele frequency revealed differences between those groups, attaining the level of statistical significance (χ(2) = 29.043, df = 2, P = 0.0000. The carriers of -765 G allele are at 1.53-fold higher risk of developing COPD. The presence of GG genotype does not increase significantly the risk of the disease. It is also noteworthy that the carriers of CC or GC genotypes are at significantly lower risk of developing COPD than the group of subjects with GG genotype.
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Zhang X, Zhong R, Zhang Z, Yuan J, Liu L, Wang Y, Kadlubar S, Feng F, Miao X. Interaction of cyclooxygenase-2 promoter polymorphisms with Helicobacter pylori infection and risk of gastric cancer. Mol Carcinog 2011; 50:876-83. [PMID: 21538574 DOI: 10.1002/mc.20784] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Revised: 03/24/2011] [Accepted: 03/27/2011] [Indexed: 12/23/2022]
Abstract
Overexpression of cyclooxygenase (COX)-2 has been implicated in the development of cancer. This study aimed to evaluate the relationship between genetic variants in COX-2 promoter interacting with Helicobacter pylori and the susceptibility to gastric cancer (GC). Three COX-2 polymorphisms -1290A>G (rs689465), -1195G>A (rs689466), and -765G>C (rs20417) were genotyped in 323 GC patients and 944 controls. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated by logistic regression model. In GC patients, the ORs were 2.33 (95% CI = 1.50-3.63) and 2.70 (95% CI = 1.68-4.33) for -1195AA and -765CG genotype carriers, respectively. Haplotype analysis showed all -1195A allele-containing haplotypes, except G(-1290)-A(-1195)-G(-765), were associated with increased risk for GC, compared with the A(-1290)-G(-1195)-G(-765) haplotype. Moreover, significant multiplicative and additive interactions were observed between H. pylori infection and all these three polymorphisms, and H. pylori-infected subjects carrying the variant allele of -1290A>G, -1195G>A, or -765G>C had increased risk of GC compared with non-H. pylori-infected subjects with wild-type allele (OR = 4.10, 95% CI = 1.90-8.83; OR = 3.46, 95% CI = 1.31-9.11; and OR = 3.32, 95% = 1.27-8.73, respectively). Our results suggested that the COX-2 promoter polymorphisms were associated with increased risk of GC, especially interacting with H. pylori infection.
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Affiliation(s)
- Xuemei Zhang
- Department of Molecular biology, College of Life Sciences, Hebei United University, Tangshan, China
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de Vries HS, te Morsche RHM, van Oijen MGH, Nagtegaal ID, Peters WHM, de Jong DJ. The functional -765G→C polymorphism of the COX-2 gene may reduce the risk of developing crohn's disease. PLoS One 2010; 5:e15011. [PMID: 21124790 PMCID: PMC2991351 DOI: 10.1371/journal.pone.0015011] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2010] [Accepted: 10/07/2010] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Cyclooxygenase-2 (COX-2) is a key enzyme involved in the conversion of arachidonic acid into prostaglandins. COX-2 is mainly induced at sites of inflammation in response to proinflammatory cytokines such as interleukin-1α/β, interferon-γ and tumor necrosis factor-α produced by inflammatory cells. AIM The aim of this study was to investigate the possible modulating effect of the functional COX-2 polymorphisms -1195 A→G and -765G→C on the risk for development of inflammatory bowel disease (IBD) in a Dutch population. METHODS Genomic DNA of 525 patients with Crohn's disease (CD), 211 patients with ulcerative colitis (UC) and 973 healthy controls was genotyped for the -1195 A→G (rs689466) and -765G→C (rs20417) polymorphisms. Distribution of genotypes in patients and controls were compared and genotype-phenotype interactions were investigated. RESULTS The genotype distribution of the -1195A→G polymorphism was not different between the patients with CD or UC and the control group. The -765GG genotype was more prevalent in CD patients compared to controls with an OR of 1.33 (95%CI 1.04-1.69, p<0.05). The -765GC and -765CC genotype carriers showed a tendency to be less frequent in patients with CD compared to controls, with ORs of 0.78 (95%CI: 0.61-1.00) and 0.49 (95%CI 0.22-1.08), respectively. Combining homozygous and heterozygous patients with the -765C allele showed a reduced risk for developing CD, with an OR of 0.75 (95%CI: 0.59-0.96). In the context of this, the G(-1195)G(-765)/A(-1195)C(-765) diplotype was significantly less common in patients with CD compared to controls, with an OR of 0.62 (95%CI: 0.39-0.98). For UC however, such an effect was not observed. No correlation was found between COX-2 diplotypes and clinical characteristics of IBD. CONCLUSIONS The -765G→C polymorphism was associated with a reduced risk for developing Crohn's disease in a Dutch population.
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Affiliation(s)
- Hilbert S de Vries
- Department of Gastroenterology and Hepatology, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands.
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Piranda DN, Festa-Vasconcellos JS, Amaral LM, Bergmann A, Vianna-Jorge R. Polymorphisms in regulatory regions of cyclooxygenase-2 gene and breast cancer risk in Brazilians: a case-control study. BMC Cancer 2010; 10:613. [PMID: 21059239 PMCID: PMC2992523 DOI: 10.1186/1471-2407-10-613] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2010] [Accepted: 11/08/2010] [Indexed: 12/25/2022] Open
Abstract
Background Cyclooxygenase-2 (COX-2) is up-regulated in several types of cancer, and it is hypothesized that COX-2 expression may be genetically influenced. Here, we evaluate the association between single-nucleotide polymorphisms (SNPs) in the COX-2 gene (PTGS2) and the occurrence of breast cancer among Brazilian women. Methods The study was conducted prospectively in two steps: First, we screened the promoter region and three fragments of the 3'-untranslated region of PTGS2 from 67 healthy Brazilians to identify SNPs and to select those with a minor allele frequency (MAF) of at least 0.10. The MAF of these selected SNPs was further characterized in 402 healthy volunteers to evaluate potential differences related to heterogeneous racial admixture and to estimate the existence of linkage disequilibrium among the SNPs. The second step was a case-control study with 318 patients and 273 controls designed to evaluate PTGS2 genotype- or haplotype-associated risk of breast cancer. Results The screening analysis indicated nine SNPs with the following MAFs: rs689465 (0.22), rs689466 (0.15), rs20415 (0.007), rs20417 (0.32), rs20419 (0.015), rs5270 (0.02), rs20424 (0.007), rs5275 (0.22) and rs4648298 (0.01). The SNPs rs689465, rs689466, rs20417 and rs5275 were further studied: Their genotypic distributions followed Hardy-Weinberg equilibrium and the MAFs were not affected by gender or skin color. Strong linkage disequilibrium was detected for rs689465, rs20417 and rs5275 in the three possible pairwise combinations. In the case-control study, there was a significant increase of rs5275TC heterozygotes in cases compared to controls (OR = 1.44, 95% CI = 1.01-2.06; P = 0.043), and the haplotype formed by rs689465G, rs689466A, rs20417G and rs5275C was only detected in cases. The apparent association with breast cancer was not confirmed for rs5275CC homozygotes or for the most frequent rs5275C-containing haplotypes. Conclusions Our results indicate no strong association between the four most frequent PTGS2 SNPs and the risk of breast cancer.
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Affiliation(s)
- Diogo N Piranda
- Divisão de Farmacologia, Coordenação de Pesquisa Instituto Nacional do Câncer - INCA, RJ, Brazil
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Lin Y, Yagyu K, Egawa N, Ueno M, Mori M, Nakao H, Ishii H, Nakamura K, Wakai K, Hosono S, Tamakoshi A, Kikuchi S. An overview of genetic polymorphisms and pancreatic cancer risk in molecular epidemiologic studies. J Epidemiol 2010; 21:2-12. [PMID: 21071884 PMCID: PMC3899511 DOI: 10.2188/jea.je20100090] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Background Although pancreatic cancer has been extensively studied, few risk factors have been identified, and no validated biomarkers or screening tools exist for early detection in asymptomatic individuals. We present a broad overview of molecular epidemiologic studies that have addressed the relationship between pancreatic cancer risk and genetic polymorphisms in several candidate genes and suggest avenues for future research. Methods A comprehensive literature search was performed using the PubMed database. Results Overall, individual polymorphisms did not seem to confer great susceptibility to pancreatic cancer; however, interactions of polymorphisms in carcinogen-metabolizing genes, DNA repair genes, and folate-metabolizing genes with smoking, diet, and obesity were shown in some studies. The major problem with these studies is that, due to small sample sizes, they lack sufficient statistical power to explore gene–gene or gene–environment interactions. Another important challenge is that the measurement of environmental influence needs to be improved to better define gene–environment interaction. It is noteworthy that 2 recent genome-wide association studies of pancreatic cancer have reported that variants in ABO blood type and in 3 other chromosomal regions are associated with risk for this cancer, thus providing new insight into pancreatic cancer etiology. Conclusions As is the case in other complex diseases, common, low-risk variants in different genes may act collectively to confer susceptibility to pancreatic cancer in individuals with repeated environmental exposures, such as smoking and red meat intake. Clarification of gene–gene and gene–environmental interaction is therefore indispensable for future studies. To address these issues, a rigorously designed molecular epidemiologic study with a large sample is desirable.
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Affiliation(s)
- Yingsong Lin
- Department of Public Health, Aichi Medical University School of Medicine, Nagakute, Japan
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Biramijamal F, Basatvat S, Hossein-Nezhad A, Soltani MS, Akbari Noghabi K, Irvanloo G, Shamimi K. Association of COX-2 promoter polymorphism with gastrointestinal tract cancer in Iran. Biochem Genet 2010; 48:915-23. [PMID: 20809087 DOI: 10.1007/s10528-010-9372-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2009] [Accepted: 05/14/2010] [Indexed: 01/29/2023]
Affiliation(s)
- Firouzeh Biramijamal
- Medical Genetics Department, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran.
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Dong J, Dai J, Zhang M, Hu Z, Shen H. Potentially functional COX-2-1195G>A polymorphism increases the risk of digestive system cancers: a meta-analysis. J Gastroenterol Hepatol 2010; 25:1042-50. [PMID: 20594217 DOI: 10.1111/j.1440-1746.2010.06293.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIM Three potentially functional polymorphisms: -765G>C, -1195G>A, and 8473T>C in the cyclooxygenase-2 (COX-2) gene were identified and proposed to be associated with cancer susceptibility. The aim of this meta-analysis was to evaluate the association between these three polymorphisms and the risk of cancer in diverse populations. METHODS All case-control studies published up to November 2009 on the association between the three polymorphisms of COX-2 and cancer risk were identified by searching PubMed. The cancer risk associated with the three polymorphisms of the COX-2 gene was estimated for each study by OR together with its 95% confidence interval (CI), respectively. RESULTS A total of 47 case-control studies were included, and variant genotypes GA/AA of -1195G>A were associated with a significantly increased cancer risk (GA/AA vs GG: odds ratio [OR], 1.29; 95% CI, 1.18-1.41; P(heterogeneity) = 0.113), and this significant association was mainly observed within cancers of the digestive system (e.g. colorectal, gastric, esophageal, oral, biliary tract, gallbladder, and pancreatic) without between-study heterogeneity (GA/AA vs GG: OR, 1.36; 95% CI; 1.23-1.51; P(heterogeneity) = 0.149). Furthermore, a stratification analysis showed that the risk of COX-2-1195G>A associated with cancers in the digestive system was more evident among Asians than Caucasians. However, for COX-2-765G>C and 8473T>C, no convincing association between the two polymorphisms and risk of cancer or cancer type was observed. CONCLUSIONS The effect of three potentially functional polymorphisms (-765G>C, -1195G>A, and 8473T>C) in the COX-2 gene on cancer risk provided evidence that the COX-2-1195G>A polymorphism was significantly associated with increased risk of digestive system cancers, especially among Asian populations.
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Affiliation(s)
- Jing Dong
- Department of Epidemiology and Biostatistics, Cancer Center, Nanjing Medical University, Nanjing, China
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Bi N, Yang M, Zhang L, Chen X, Ji W, Ou G, Lin D, Wang L. Cyclooxygenase-2 genetic variants are associated with survival in unresectable locally advanced non-small cell lung cancer. Clin Cancer Res 2010; 16:2383-90. [PMID: 20332326 DOI: 10.1158/1078-0432.ccr-09-2793] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE Cyclooxygenase-2 (COX-2) plays important roles in the modulation of apoptosis, angiogenesis, immune response, and tumor invasion. Elevated COX-2 expression has been reported to be correlated with reduced survival after radiotherapy. This study examined whether genetic variations in the COX-2 gene are associated with different survival in inoperable locally advanced non-small cell lung cancer (NSCLC) treated with chemoradiotherapy or radiotherapy alone. EXPERIMENTAL DESIGN One hundred and thirty-six patients with inoperable stage IIIA-B NSCLC receiving thoracic irradiation between 2004 and 2007 were recruited in this study. Five functional COX-2 polymorphisms were genotyped using DNA from blood lymphocytes. Kaplan-Meier methods were used to compare survival by different genotypes. Cox proportional hazards models were used to identify independently significant variables. RESULTS During the median 22.4 months of follow-up, the favorable COX-2 -1195GA and GG genotypes were significantly correlated with better overall survival (20.2 months versus 15.7 months; P = 0.006; hazard ratio (HR), 0.58; 95% confidence interval (CI), 0.39-0.86) and with longer progress-free survival (11.9 months versus 9.5 months; P = 0.034) compared with the -1195AA genotype. No significant associations were found among other COX-2 polymorphisms and clinical outcomes. In the multivariate Cox proportional hazards model, COX-2 -1195G/A polymorphism was independently associated with overall survival after adjusting the clinicopathologic factors (P = 0.008; HR, 0.58; 95% CI, 0.39-0.87). CONCLUSION COX-2 -1195G/A polymorphism is a potential predictive marker of survival in locally advanced NSCLC patients treated with chemoradiotherapy or radiotherapy alone.
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Affiliation(s)
- Nan Bi
- Department of Radiation Oncology, Cancer Institute and Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Zhu W, Wei BB, Shan X, Liu P. -765G>C and 8473T>C polymorphisms of COX-2 and cancer risk: a meta-analysis based on 33 case-control studies. Mol Biol Rep 2009; 37:277-88. [PMID: 19669667 DOI: 10.1007/s11033-009-9685-1] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2009] [Accepted: 07/28/2009] [Indexed: 12/13/2022]
Abstract
Cyclooxygenase-2 (COX-2) is an inducible enzyme converting arachidonic acid to prostaglandins and playing important roles in cancer etiology. The -765G>C and 8473T>C polymorphisms have been implicated in cancer risk. However, the results on the association between the two COX-2 polymorphisms and cancer risk are conflicting. To derive a more precise estimation of the association between them, we performed a meta-analysis of 8,090 cancer cases and 11,010 controls concerning -765G>C polymorphism and 14,283 cancer cases and 15,489 controls concerning 8473T>C polymorphism from 33 case-control studies. We used odds ratios (ORs) with 95% confidence intervals (CIs) to assess the strength of the association. Overall, individuals with the -765GC or GC/CC genotypes were associated with higher cancer risk than those with the -765GG genotype and in the stratified analysis this effect maintained in colorectal carcinoma or esophageal cancer of Asian descents. Overall, no significant cancer risk of 8473T>C polymorphism was found. Stratified by cancer types, the variant 8473CC was associated with a decreased risk in breast cancer, compared with the TT or TC/TT genotypes and in lung cancer subgroup after sensitive analysis, there was a decreased risk in CC versus TT, TC versus TT and the dominant models. Moreover, a decreased risk of lung cancer was observed among smokers in the dominant model. In summary, this meta-analysis suggesting that -765G>C may cause an increased risk of colorectal carcinoma and esophageal cancer in Asian descents while 8473T>C polymorphism may cause a decreased risk of breast and lung cancer.
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Affiliation(s)
- Wei Zhu
- Department of Oncology, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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