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Xu L, Sun X, Wang Y, Zhou T, Jia J, Zhang M, Zhou P, Wang Y, Wang Y, Shou Y, Huo X, Ji X, Chen J, Yu D. Functional polymorphisms in Benzo(a)Pyrene-induced toxicity pathways associated with the risk on laryngeal squamous cell carcinoma. Food Chem Toxicol 2023; 182:114199. [PMID: 38000460 DOI: 10.1016/j.fct.2023.114199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 10/30/2023] [Accepted: 11/17/2023] [Indexed: 11/26/2023]
Abstract
Benzo(a)Pyrene (BaP) is a well-known environmental carcinogen that poses a significant risk to human health. The pivotal genes and toxicity pathways have been identified as key events to construct the mode of action (MOA) of BaP. In this study, we focused on evaluating the association between genetic variants in BaP-disturbed toxicity pathways and the susceptibility of laryngeal squamous cell carcinoma (LSCC), based on the data of our previous genome-wide association analysis (GWAS). In addition, we investigated the biological roles of these significant polymorphisms by integrating bioinformatic annotation and experimental validation. Our findings revealed that 15 functional polymorphisms in AHR signaling, p53 signaling, NRF2 signaling, TGF-β signaling, STAT3 signaling, and IL-8 signaling pathways were significantly associated with susceptibility to LSCC. Our study provides a novel approach for identifying novel risk genetic loci utilizing GWAS data, and suggests potential targets for early detection of LSCC in the future.
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Affiliation(s)
- Lin Xu
- School of Public Health, Qingdao University, Qingdao, China
| | - Xueying Sun
- School of Public Health, Qingdao University, Qingdao, China; Weifang Municipal Center for Disease Control and Prevention, Weifang, Shandong, China
| | - Yiyi Wang
- School of Public Health, Qingdao University, Qingdao, China
| | - Tao Zhou
- School of Public Health, Qingdao University, Qingdao, China
| | - Jingjing Jia
- School of Public Health, Qingdao University, Qingdao, China
| | - Mai Zhang
- School of Public Health, Qingdao University, Qingdao, China
| | - Pengyuan Zhou
- School of Public Health, Qingdao University, Qingdao, China
| | - Yixiao Wang
- School of Public Health, Qingdao University, Qingdao, China
| | - Youshuo Wang
- School of Public Health, Qingdao University, Qingdao, China
| | - Yingqing Shou
- School of Public Health, Qingdao University, Qingdao, China
| | - Xiaoyu Huo
- School of Public Health, Qingdao University, Qingdao, China
| | - Xiaoying Ji
- School of Public Health, Qingdao University, Qingdao, China
| | - Jing Chen
- School of Public Health, Qingdao University, Qingdao, China.
| | - Dianke Yu
- School of Public Health, Qingdao University, Qingdao, China
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2
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Wu X, Liu X, Liao W, Dong X, Li R, Hou J, Mao Z, Huo W, Guo Y, Li S, Chen G, Wang C. Healthier Lifestyles Attenuated Association of Single or Mixture Exposure to Air Pollutants with Cardiometabolic Risk in Rural Chinese Adults. TOXICS 2022; 10:541. [PMID: 36136506 PMCID: PMC9503940 DOI: 10.3390/toxics10090541] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 09/12/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
There is little research on how long-term exposure to independent and multiple air pollutants changes cardiometabolic risk in adults. In addition, previous studies focused on only the effect of one or two lifestyles on cardiometabolic risk. The evidence on the interactive effects of the lifestyle score and exposure to independent and mixtures of air pollutants on cardiometabolic risk is lacking. A total of 33,638 rural residents were included in the cross-sectional study. The three-year average concentrations of air pollutants for participants were predicted by using a satellite-based prediction. The air pollution score was created to assess the combined exposure of four air pollutants (PM1, PM2.5, PM10, and NO2). A gender−age-specific cardiometabolic risk score was calculated. Multivariable-adjusted linear regression and quantile g-computation were used to investigate the associations between air pollutants and cardiometabolic risk. Interaction plots were applied to describe the interactive effects of air pollution and the healthy lifestyle score on cardiometabolic risk. Per interquartile range (IQR) unit increases in PM1, PM2.5, PM10, or NO2 were associated with 0.162 (95% CI: 0.091, 0.233), 0.473 (95% CI: 0.388, 0.559), 0.718 (95% CI: 0.627, 0.810), and 0.795 (95% CI: 0.691, 0.898) unit increases in cardiometabolic risk score (all p < 0.05), respectively. A 0.854 (95% CI: 0.768, 0.940) unit increase in cardiometabolic risk was associated with each IQR increase in air pollution score. Furthermore, the strengths of associations of PM1, PM2.5, PM10, NO2, and the air pollution score on cardiometabolic risk score were attenuated with the healthy lifestyle score increase. In addition, there was no statistical significance after the lifestyle score equal to four scores for the effect of PM1 on the cardiometabolic risk score. In conclusions, individual or joint air pollutants were associated with an increased cardiometabolic risk. Improving the healthy lifestyle may be an effective method to improve cardiometabolic health in highly polluted rural regions.
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Affiliation(s)
- Xueyan Wu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Xiaotian Liu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Wei Liao
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Xiaokang Dong
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Ruiying Li
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Jian Hou
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Zhenxing Mao
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Wenqian Huo
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Yuming Guo
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC 3010, Australia
| | - Shanshan Li
- Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC 3010, Australia
| | - Gongbo Chen
- Guangdong Provincial Engineering Technology Research Center of Environmental and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Chongjian Wang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
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Yin J, Hou W, Vogel U, Li X, Ma Y, Wang C, Wang H, Sun Z. TP53 common variants and interaction with PPP1R13L and CD3EAP SNPs and lung cancer risk and smoking behavior in a Chinese population. Biomed J 2022; 45:169-178. [PMID: 35351459 PMCID: PMC9133261 DOI: 10.1016/j.bj.2021.01.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 12/01/2020] [Accepted: 01/21/2021] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND TP53 encodes a tumor suppressor protein containing cell cycle arrest, apoptosis, senescence, DNA repair, or changes in metabolism. The effect of TP53 inactivation is well-known, and genetically determined smaller variations in TP53 activity are related to cancer. Lung cancer causes the highest rates of morbidity and mortality in the world. Epidemiology studies have assessed the association of TP53 single nucleotide polymorphisms with lung cancer. METHODS We systematically examined the association of five htSNPs (haplotype-tagging single nucleotide polymorphism) (rs12951053, rs1042522, rs8079544, rs12602273 and rs8064946) across the entire TP53 locus and interaction between genes TP53 and PPP1R13L and CD3EAP and smoking-duration related to lung cancer risk in this Chinese study including 544 cases and 550 controls. RESULTS No significant associations were observed in analysis of alleles and genotypes with co-dominant, dominant, recessive, and log-additive models after adjustment for smoking status. Haplotype analysis showed that haplotype9 (rs12951053A-rs1042522C-rs8079544C-rs12602273G-rs8064946C) [OR (95% CI) = 0.13 (0.03-0.59), p = 0.0079] was associated with decreased risk of lung cancer after adjusted for smoking-duration. The analysis of smoking-duration within TP53 haplotypes showed that there were more carriers of haplotype1 (AGCCG), 2 (CCCGC) and 4 (CCCCG) in smoking-subgroup of >20 (years) (all p < 0.05). MDR testing analysis identified two significant models (both p < 0.0010) of gene-gene-environment interaction in relation to lung cancer risk in whole study group. CONCLUSION The present results provide novel evidence that the haplotype of TP53 htSNPs and interaction between genetic variation in TP53 and CD3EAP and smoking-duration may associate with lung cancer risk, and provide additional evidence of association between TP53 htSNP haplotypes and long-term smoking-related behavior.
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Affiliation(s)
- Jiaoyang Yin
- Key Laboratory of Environment and Population Health of Liaoning Education Ministry (Shenyang Medical College), Shenyang, Liaoning Province, People's Republic of China.
| | - Wei Hou
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Pathology, Peking University Cancer Hospital & Institute, Beijing, People's Republic of China
| | - Ulla Vogel
- National Research Centre for the Working Environment, DK-2100 Copenhagen, Denmark
| | - Xinxin Li
- Key Laboratory of Environment and Population Health of Liaoning Education Ministry (Shenyang Medical College), Shenyang, Liaoning Province, People's Republic of China
| | - Yegang Ma
- Department of Thoracic Surgery, Liaoning Cancer Hospital, Shenyang, Liaoning Province, People's Republic of China
| | - Chunhong Wang
- Key Laboratory of Environment and Population Health of Liaoning Education Ministry (Shenyang Medical College), Shenyang, Liaoning Province, People's Republic of China
| | - Huiwen Wang
- Key Laboratory of Environment and Population Health of Liaoning Education Ministry (Shenyang Medical College), Shenyang, Liaoning Province, People's Republic of China
| | - Zhenxiang Sun
- Key Laboratory of Environment and Population Health of Liaoning Education Ministry (Shenyang Medical College), Shenyang, Liaoning Province, People's Republic of China
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The tumor suppressor role of salvador family WW domain-containing protein 1 (SAV1): one of the key pieces of the tumor puzzle. J Cancer Res Clin Oncol 2021; 147:1287-1297. [PMID: 33580421 DOI: 10.1007/s00432-021-03552-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 02/04/2021] [Indexed: 10/22/2022]
Abstract
PURPOSE In the complex tumor scenario, understanding the function of proteins with protumor or antitumor roles is essential to support advances in the cancer clinical area. Among them, the salvador family WW domain-containing protein 1 (SAV1) is highlighted. This protein plays a fundamental role in the tumor suppressor face of the Hippo pathway, which are responsible for controlling cell proliferation, organ size, development and tissue homeostasis. However, the functional dysregulation of this pathway may contribute to tumorigenesis and tumor progression. As SAV1 is a tumor suppressor scaffold protein, we explored the functions performed by SAV1 with its partners, the regulation of its expression, and its antitumor role in various types of cancer. METHODS We selected and analyzed 80 original articles and reviews from Pubmed that focuses on the study of SAV1 in cancer. RESULTS SAV1 interacts with several proteins, has different functions and acts as tumor suppressor by other mechanisms besides Hippo pathway. SAV1 expression regulation seems to occur by microRNAs and rarely by mutation or promoter methylation. It is downregulated in different types of cancer, which leads to cancer promotion and progression and is associated with poor prognosis. In vivo models have shown that the loss of SAV1 contributes to tumorigenesis. CONCLUSION SAV1 plays a relevant role as tumor suppressor in several types of cancer, highlighting SAV1 and the Hippo pathway's importance to cancer. Thus, encouraging further studies to include the SAV1 as a molecular key piece in cancer biology and in clinical approaches to cancer.
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5
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Association between tobacco substance usage and a missense mutation in the tumor suppressor gene P53 in the Saudi Arabian population. PLoS One 2021; 16:e0245133. [PMID: 33481818 PMCID: PMC7822264 DOI: 10.1371/journal.pone.0245133] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 12/23/2020] [Indexed: 02/06/2023] Open
Abstract
The tumor suppressor gene TP53 and its downstream genes P21 and MDM2 play crucial roles in combating DNA damage at the G1/S cell cycle checkpoint. Polymorphisms in these genes can lead to the development of various diseases. This study was conducted to examine a potential association between tobacco substance usage (TSU) and single-nucleotide polymorphism (SNP) at the exon regions of the P53, P21, and MDM2 genes by comparing populations of smokers and non-smokers from Saudi Arabia. P53 rs1042522 (C/G), P21 rs1801270 (A/C), and MDM2 rs769412 (A/G) were investigated by genotyping 568 blood specimens: 283 from male/female smokers and 285 from male/female non-smokers. The results obtained from the smokers and their control non-smokers were compared according to age, sex, duration of smoking, and type of TSU. Heterozygous CG, homozygous GG, and CG+GG genotypes, as well as the G allele of rs1042522 were significantly associated with TSU in Saudi smokers compared with non-smokers. The C allele frequency of rs1801270 was also associated with TSU in smokers (OR = 1.33, p = 0.049) in comparison with non-smokers, in younger smokers (≤29 years) (OR = 1.556, p = 0.03280) in comparison with non-smokers of the same age, in smokers who had smoked cigarettes for seven years or less (OR = 1.596, p = 0.00882), and in smokers who had consumed shisha (OR = 1.608, p = 0.04104) in comparison with the controls. However, the genotypic and allelic frequencies for rs769412 did not show significant associations with TSU in Saudis. The selected SNP of P53 was strongly associated with TSU and may be linked to TSU-induced diseases in the Saudi Arabian population.
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6
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Bulgakova O, Kussainova A, Bersimbaev R. The cell cycle regulatory gene polymorphisms TP53 (rs1042522) and MDM2 (rs2279744) in lung cancer: a meta-analysis. Vavilovskii Zhurnal Genet Selektsii 2020; 24:777-784. [PMID: 33959694 PMCID: PMC8093851 DOI: 10.18699/vj20.673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Lung cancer is one of the most common types of cancer in the world. Although the mechanism of lung
cancer is still unknown, a large number of studies have found a link between gene polymorphisms and the risk of lung
cancer. The tumor suppressor p53 plays a crucial role in maintaining genomic stability and tumor prevention. MDM2
is a critical regulator of the p53 protein. Despite the importance of p53 pathway in cancer, data on the contribution
of SNPs of TP53 (rs1042522) and MDM2 (rs2279744) to the development of lung cancer are very contradictory. A metaanalysis
that collects quantitative data from individual studies and combines their results has the advantage of improving
accuracy, providing reliable estimates, and resolving those issues in which studies on individual associations
are not effective enough. The aim of this study was to determine whether the TP53 (rs1042522) and MDM2 (rs2279744)
polymorphisms confer susceptibility to lung cancer. A meta-analysis was conducted on the associations between the
TP53 (rs1042522) and MDM2 (rs2279744) polymorphisms and lung cancer. A total of 51 comparison studies including
25,366 patients and 25,239 controls were considered in this meta-analysis. The meta-analysis showed no association
between lung cancer and MDM2 (rs2279744) under any model. A noteworthy association of TP53 (rs1042522) with
susceptibility to lung cancer in overall pooled subjects was observed under three different models (allele contrast,
homozygote contrast (additive) and dominant). Stratification by ethnicity indicated an association between the TP53
(rs1042522) and lung cancer in Asians and Caucasians. This meta-analysis demonstrates that the TP53 (rs1042522), but
not MDM2 (rs2279744) polymorphism may confer susceptibility to lung cancer.
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Affiliation(s)
- O Bulgakova
- L.N. Gumilyov Eurasian National University, Institute of Cell Biology and Biotechnology, Nur-Sultan, Kazakhstan
| | - A Kussainova
- L.N. Gumilyov Eurasian National University, Institute of Cell Biology and Biotechnology, Nur-Sultan, Kazakhstan
| | - R Bersimbaev
- L.N. Gumilyov Eurasian National University, Institute of Cell Biology and Biotechnology, Nur-Sultan, Kazakhstan
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7
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Eaves LA, Nguyen HT, Rager JE, Sexton KG, Howard T, Smeester L, Freedman AN, Aagaard KM, Shope C, Lefer B, Flynn JH, Erickson MH, Fry RC, Vizuete W. Identifying the Transcriptional Response of Cancer and Inflammation-Related Genes in Lung Cells in Relation to Ambient Air Chemical Mixtures in Houston, Texas. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:13807-13816. [PMID: 33064461 PMCID: PMC7757424 DOI: 10.1021/acs.est.0c02250] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Atmospheric pollution represents a complex mixture of air chemicals that continually interact and transform, making it difficult to accurately evaluate associated toxicity responses representative of real-world exposure. This study leveraged data from a previously published article and reevaluated lung cell transcriptional response induced by outdoor atmospheric pollution mixtures using field-based exposure conditions in the industrialized Houston Ship Channel. The tested hypothesis was that individual and co-occurring chemicals in the atmosphere relate to altered expression of critical genes involved in inflammation and cancer-related processes in lung cells. Human lung cells were exposed at an air-liquid interface to ambient air mixtures for 4 h, with experiments replicated across 5 days. Real-time monitoring of primary and secondary gas-phase pollutants, as well as other atmospheric conditions, was simultaneously conducted. Transcriptional analysis of exposed cells identified critical genes showing differential expression associated with both individual and chemical mixtures. The individual pollutant identified with the largest amount of associated transcriptional response was benzene. Tumor necrosis factor (TNF) and interferon regulatory factor 1 (IRFN1) were identified as key upstream transcription factor regulators of the cellular response to benzene. This study is among the first to measure lung cell transcriptional responses in relation to real-world, gas-phase air mixtures.
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Affiliation(s)
- Lauren A Eaves
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Hang T Nguyen
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Julia E Rager
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
- Curriculum in Toxicology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
- The Institute for Environmental Health Solutions, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Kenneth G Sexton
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Thomas Howard
- The Institute for Environmental Health Solutions, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Lisa Smeester
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
- The Institute for Environmental Health Solutions, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Anastasia N Freedman
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Kjersti M Aagaard
- Department of Obstetrics & Gynecology, Division of Maternal Fetal Medicine, Baylor College of Medicine, Houston, Texas 77030, United States
| | - Cynthia Shope
- Department of Obstetrics & Gynecology, Division of Maternal Fetal Medicine, Baylor College of Medicine, Houston, Texas 77030, United States
| | - Barry Lefer
- Department of Earth and Atmospheric Sciences, University of Houston, Houston, Texas 77004, United States
- Tropospheric Composition Program, Earth Science Division, NASA, Washington, District of Columbia 20546, United States
| | - James H Flynn
- Department of Earth and Atmospheric Sciences, University of Houston, Houston, Texas 77004, United States
| | - Mathew H Erickson
- Department of Earth and Atmospheric Sciences, University of Houston, Houston, Texas 77004, United States
| | - Rebecca C Fry
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
- Curriculum in Toxicology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
- The Institute for Environmental Health Solutions, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - William Vizuete
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
- Curriculum in Toxicology, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
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Luo Y, McShan D, Ray D, Matuszak M, Jolly S, Lawrence T, Ming Kong F, Ten Haken R, El Naqa I. Development of a Fully Cross-Validated Bayesian Network Approach for Local Control Prediction in Lung Cancer. IEEE TRANSACTIONS ON RADIATION AND PLASMA MEDICAL SCIENCES 2018; 3:232-241. [PMID: 30854500 DOI: 10.1109/trpms.2018.2832609] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The purpose of this study is to demonstrate that a Bayesian network (BN) approach can explore hierarchical biophysical relationships that influence tumor response and predict tumor local control (LC) in non-small-cell lung cancer (NSCLC) patients before and during radiotherapy from a large-scale dataset. Our BN building approach has two steps. First, relevant biophysical predictors influencing LC before and during the treatment are selected through an extended Markov blanket (eMB) method. From this eMB process, the most robust BN structure for LC prediction was found via a wrapper-based approach. Sixty-eight patients with complete feature information were used to identify a full BN model for LC prediction before and during the treatment. Fifty more recent patients with some missing information were reserved for independent testing of the developed pre- and during-therapy BNs. A nested cross-validation (N-CV) was developed to evaluate the performance of the two-step BN approach. An ensemble BN model is generated from the N-CV sampling process to assess its similarity with the corresponding full BN model, and thus evaluate the sensitivity of our BN approach. Our results show that the proposed BN development approach is a stable and robust approach to identify hierarchical relationships among biophysical features for LC prediction. Furthermore, BN predictions can be improved by incorporating during treatment information.
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Affiliation(s)
- Yi Luo
- Department of Radiation Oncology, University of Michigan, Ann Arbor, USA,
| | - Daniel McShan
- Department of Radiation Oncology, University of Michigan, Ann Arbor, USA
| | - Dipankar Ray
- Department of Radiation Oncology, University of Michigan, Ann Arbor, USA
| | - Martha Matuszak
- Department of Radiation Oncology, University of Michigan, Ann Arbor, USA
| | - Shruti Jolly
- Department of Radiation Oncology, University of Michigan, Ann Arbor, USA
| | - Theodore Lawrence
- Department of Radiation Oncology, University of Michigan, Ann Arbor, USA
| | - Feng Ming Kong
- Department of Radiation Oncology, Indiana University, Indianapolis, USA
| | - Randall Ten Haken
- Department of Radiation Oncology, University of Michigan, Ann Arbor, USA
| | - Issam El Naqa
- Department of Radiation Oncology, University of Michigan, Ann Arbor, USA
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9
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Al-Obaide MAI, Ibrahim BA, Al-Humaish S, Abdel-Salam ASG. Genomic and Bioinformatics Approaches for Analysis of Genes Associated With Cancer Risks Following Exposure to Tobacco Smoking. Front Public Health 2018; 6:84. [PMID: 29616208 PMCID: PMC5869936 DOI: 10.3389/fpubh.2018.00084] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2017] [Accepted: 03/05/2018] [Indexed: 01/03/2023] Open
Abstract
Cancer is a significant health problem in the Middle East and global population. It is well established that there is a direct link between tobacco smoking and cancer, which will continue to pose a significant threat to human health. The impact of long-term exposure to tobacco smoke on the risk of cancer encouraged the study of biomarkers for vulnerable individuals to tobacco smoking, especially children, who are more susceptible than adults to the action of environmental carcinogens. The carcinogens in tobacco smoke condensate induce DNA damage and play a significant role in determining the health and well-being of smokers, non-smoker, and primarily children. Cancer is a result of genomic and epigenomic malfunctions that lead to an initial premalignant condition. Although premalignancy genetic cascade is a much-delayed process, it will end with adverse health consequences. In addition to the DNA damage and mutations, tobacco smoke can cause changes in the DNA methylation and gene expression associated with cancer. The genetic events hint on the possible use of genomic–epigenomic changes in genes related to cancer, in predicting cancer risks associated with exposure to tobacco smoking. Bioinformatics provides indispensable tools to identify the cascade of expressed genes in active smokers and non-smokers and could assist the development of a framework to manage this cascade of events linked with the evolvement of disease including cancer. The aim of this mini review is to cognize the essential genomic processes and health risks associated with tobacco smoking and the implications of bioinformatics in cancer prediction, prevention, and intervention.
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Affiliation(s)
- Mohammed A I Al-Obaide
- Department of Biomedical Science, School of Pharmacy, Texas Tech University Health Science Center, Amarillo, TX, United States
| | | | | | - Abdel-Salam G Abdel-Salam
- Department of Mathematics, Statistics and Physics, College of Arts and Sciences, Qatar University, Doha, Qatar
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10
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Feng Y, Wang Y, Liu H, Liu Z, Mills C, Owzar K, Xie J, Han Y, Qian DC, Hung Rj RJ, Brhane Y, McLaughlin J, Brennan P, Bickeböller H, Rosenberger A, Houlston RS, Caporaso N, Landi MT, Brüske I, Risch A, Ye Y, Wu X, Christiani DC, Amos CI, Wei Q. Novel genetic variants in the P38MAPK pathway gene ZAK and susceptibility to lung cancer. Mol Carcinog 2018; 57:216-224. [PMID: 29071797 PMCID: PMC6128286 DOI: 10.1002/mc.22748] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 07/21/2017] [Accepted: 09/29/2017] [Indexed: 01/18/2023]
Abstract
The P38MAPK pathway participates in regulating cell cycle, inflammation, development, cell death, cell differentiation, and tumorigenesis. Genetic variants of some genes in the P38MAPK pathway are reportedly associated with lung cancer risk. To substantiate this finding, we used six genome-wide association studies (GWASs) to comprehensively investigate the associations of 14 904 single nucleotide polymorphisms (SNPs) in 108 genes of this pathway with lung cancer risk. We identified six significant lung cancer risk-associated SNPs in two genes (CSNK2B and ZAK) after correction for multiple comparisons by a false discovery rate (FDR) <0.20. After removal of three CSNK2B SNPs that are located in the same locus previously reported by GWAS, we performed the LD analysis and found that rs3769201 and rs7604288 were in high LD. We then chose two independent representative SNPs of rs3769201 and rs722864 in ZAK for further analysis. We also expanded the analysis by including these two SNPs from additional GWAS datasets of Harvard University (984 cases and 970 controls) and deCODE (1319 cases and 26 380 controls). The overall effects of these two SNPs were assessed using all eight GWAS datasets (OR = 0.92, 95%CI = 0.89-0.95, and P = 1.03 × 10-5 for rs3769201; OR = 0.91, 95%CI = 0.88-0.95, and P = 2.03 × 10-6 for rs722864). Finally, we performed an expression quantitative trait loci (eQTL) analysis and found that these two SNPs were significantly associated with ZAK mRNA expression levels in lymphoblastoid cell lines. In conclusion, the ZAK rs3769201 and rs722864 may be functional susceptibility loci for lung cancer risk.
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Affiliation(s)
- Yun Feng
- Department of Respiration, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina
- Department of Medicine, Duke University School of Medicine, Durham, North Carolina
| | - Yanru Wang
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina
- Department of Medicine, Duke University School of Medicine, Durham, North Carolina
| | - Hongliang Liu
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina
- Department of Medicine, Duke University School of Medicine, Durham, North Carolina
| | - Zhensheng Liu
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina
- Department of Medicine, Duke University School of Medicine, Durham, North Carolina
| | - Coleman Mills
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina
- Department of Medicine, Duke University School of Medicine, Durham, North Carolina
| | - Kouros Owzar
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina
- Duke Cancer Institute and Department of Biostatistics and Bioinformatics, Duke University Medical Center, Durham, North Carolina
| | - Jichun Xie
- Duke Cancer Institute and Department of Biostatistics and Bioinformatics, Duke University Medical Center, Durham, North Carolina
| | - Younghun Han
- Community and Family Medicine, Geisel School of Medicine, Dartmouth College, Hanover, New Hampshire
| | - David C Qian
- Community and Family Medicine, Geisel School of Medicine, Dartmouth College, Hanover, New Hampshire
| | - Rayjean J Hung Rj
- Lunenfeld-Tanenbaum Research Institute of Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Yonathan Brhane
- Lunenfeld-Tanenbaum Research Institute of Mount Sinai Hospital, Toronto, Ontario, Canada
| | | | - Paul Brennan
- Genetic Epidemiology Group, International Agency for Research on Cancer (IARC), Lyon, France
| | - Heike Bickeböller
- Department of Genetic Epidemiology, University Medical Center, Georg-August-University Göttingen, Göttingen, Germany
| | - Albert Rosenberger
- Department of Genetic Epidemiology, University Medical Center, Georg-August-University Göttingen, Göttingen, Germany
| | - Richard S Houlston
- Division of Genetics and Epidemiology, The Institute of Cancer Research, London, UK
| | - Neil Caporaso
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Maria Teresa Landi
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland
| | - Irene Brüske
- Helmholtz Centre Munich, German Research Centre for Environmental Health, Institute of Epidemiology I, Neuherberg, Germany
| | - Angela Risch
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Yuanqing Ye
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Xifeng Wu
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - David C Christiani
- Massachusetts General Hospital, Boston, Massachusetts
- Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts
| | - Christopher I Amos
- Community and Family Medicine, Geisel School of Medicine, Dartmouth College, Hanover, New Hampshire
| | - Qingyi Wei
- Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina
- Department of Medicine, Duke University School of Medicine, Durham, North Carolina
- Department of Population Health Sciences, Duke University School of Medicine, Durham, North Carolina
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11
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Myneni AA, Chang SC, Niu R, Liu L, Zhao B, Shi J, Han X, Li J, Su J, Yu S, Zhang ZF, Mu L. Ataxia Telangiectasia-Mutated ( ATM)Polymorphisms and Risk of Lung Cancer in a Chinese Population. Front Public Health 2017; 5:102. [PMID: 28642860 PMCID: PMC5462911 DOI: 10.3389/fpubh.2017.00102] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Accepted: 04/18/2017] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND The ataxia telangiectasia-mutated (ATM) gene has a key role in DNA repair including activation and stabilization of p53, which implicates the importance of ATM polymorphisms in the development of cancer. This study aims to investigate the association of two ATM single-nucleotide polymorphisms (SNPs) with lung cancer, as well as their potential interaction with p53 gene and other known risk factors of lung cancer. METHODS A population-based case-control study was conducted in Taiyuan city, China with 399 cases and 466 controls matched on the distribution of age and sex of cases. The two ATM gene SNPs, ATMrs227060 and ATMrs228589 as well as p53 gene SNP, p53rs1042522 were genotyped using Sequenom platform. Unconditional logistic regression models were used to estimate crude and adjusted odds ratios (aOR) and 95% confidence intervals (CIs). Adjusted models controlled for age, sex, and smoking status. RESULTS The study showed that TT genotype of ATMrs227060 (aOR = 1.58, 95% CI: 1.06-2.35) and AA genotype of ATMrs228589 were significantly associated with lung cancer (aOR = 1.50, 95% CI: 1.08-2.08) in a recessive model. Additionally, carrying variant genotypes of ATMrs227060 (TT), ATMrs228589 (AA), and p53rs1042522 (CC) concomitantly was associated with much higher risk (aOR = 3.68, 95% CI: 1.43-9.45) of lung cancer than carrying variant genotypes of any one of the above three SNPs. We also found multiplicative and additive interaction between tea drinking and ATMrs227060 in association with lung cancer. CONCLUSION This study indicates that ATM gene variants might be associated with development of lung cancer in Chinese population. These results need to be validated in larger and different population samples.
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Affiliation(s)
- Ajay A. Myneni
- Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, State University of New York (SUNY) at Buffalo, Buffalo, NY, United States
| | - Shen-Chih Chang
- Department of Epidemiology, Fielding School of Public Health, University of California at Los Angeles (UCLA), Los Angeles, CA, United States
| | - Rungui Niu
- Shanxi Tumor Hospital, Taiyuan, Shanxi, China
| | - Li Liu
- Taiyuan City Center for Disease Control and Prevention (CDC), Taiyuan, Shanxi, China
| | - Baoxing Zhao
- Taiyuan City Center for Disease Control and Prevention (CDC), Taiyuan, Shanxi, China
| | - Jianping Shi
- Taiyuan City Center for Disease Control and Prevention (CDC), Taiyuan, Shanxi, China
| | - Xiaoyou Han
- Shanxi Tumor Hospital, Taiyuan, Shanxi, China
| | - Jiawei Li
- School of Public Health, Fudan University, Shanghai, China
| | - Jia Su
- School of Public Health, Fudan University, Shanghai, China
| | - Shunzhang Yu
- School of Public Health, Fudan University, Shanghai, China
| | - Zuo-Feng Zhang
- Department of Epidemiology, Fielding School of Public Health, University of California at Los Angeles (UCLA), Los Angeles, CA, United States
| | - Lina Mu
- Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, State University of New York (SUNY) at Buffalo, Buffalo, NY, United States
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12
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Kamiza AB, Hsieh LL, Tang R, Chien HT, Lai CH, Chiu LL, Lo TP, Hung KY, You JF, Wang WC, Hsiung CA, Yeh CC. TP53 Polymorphisms and Colorectal Cancer Risk in Patients with Lynch Syndrome in Taiwan: A Retrospective Cohort Study. PLoS One 2016; 11:e0167354. [PMID: 27907203 PMCID: PMC5131981 DOI: 10.1371/journal.pone.0167354] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 11/11/2016] [Indexed: 01/29/2023] Open
Abstract
Background and Aim TP53 encodes p53, which has a crucial role in modulating genes that regulate defense against cancer development. This study investigated whether TP53 polymorphisms are associated with colorectal cancer (CRC) in patients with Lynch syndrome and whether TP53 interacts with lifestyle factors to modify CRC risk. Methods We identified 260 MLH1 and MSH2 germline mutation carriers from the Taiwan Hereditary Nonpolyposis Colorectal Cancer Consortium. A weighted Cox proportional hazard model was used to calculate hazard ratios (HRs) and 95% confidence intervals (CIs) to determine the association of TP53 polymorphisms with CRC development. Results The carriers of the variant C allele of rs1042522 were associated with a decreased CRC risk (GC genotype: HR = 0.35, 95% CI = 0.14–0.86; CC genotype: HR = 0.28, 95% CI = 0.13–0.57). In addition, the dominant model of rs1042522 was associated with a decreased CRC risk (HR = 0.32, 95% CI = 0.15–0.67). The CRC risk was decreased in carriers with the CT and TT genotypes of rs12947788 (HR = 0.20, 95% CI = 0.08–0.46 and HR = 0.25, 95% CI = 0.09–0.65, respectively). Moreover, the dominant model of rs12947788 was significantly associated with a decreased CRC risk (HR = 0.21, 95% CI = 0.09–0.46). A haplotype analysis indicated that compared with the most common GC haplotype, the CT haplotype was associated with a decreased CRC risk (HR = 0.26, 95% CI = 0.11–0.59). However, no significant interaction was observed between TP53 polymorphisms and lifestyle factors. Conclusion The study results revealed that the rs1042522 genotype with the C allele and the rs12947788 genotype with the T allele in TP53 were associated with a decreased CRC risk in patients with Lynch syndrome in Taiwan.
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Affiliation(s)
- Abram Bunya Kamiza
- School of Public Health, College of Public Health and Nutrition, Taipei Medical University, Taipei, Taiwan
| | - Ling-Ling Hsieh
- Department of Public Health, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Reiping Tang
- Colorectal Section, Department of Surgery, Chang Gung Memorial Hospital, Tao-Yuan, Taiwan
- School of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Huei-Tzu Chien
- Department of Public Health, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Chih-Hsiung Lai
- Department of Public Health, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Li-Ling Chiu
- Department of Public Health, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
- Department of Nutrition and Health Sciences, Chang Gung University of Science and Technology, Tao-Yuan, Taiwan
| | - Tsai-Ping Lo
- Institute of Population Health Sciences, National Health Research Institutes, Miaoli, Taiwan
| | - Kuan-Yi Hung
- Institute of Population Health Sciences, National Health Research Institutes, Miaoli, Taiwan
| | - Jeng-Fu You
- Colorectal Section, Department of Surgery, Chang Gung Memorial Hospital, Tao-Yuan, Taiwan
- School of Medicine, Chang Gung University, Tao-Yuan, Taiwan
| | - Wen-Chang Wang
- Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Chao A. Hsiung
- Institute of Population Health Sciences, National Health Research Institutes, Miaoli, Taiwan
- * E-mail: (CCY); (CAH)
| | - Chih-Ching Yeh
- School of Public Health, College of Public Health and Nutrition, Taipei Medical University, Taipei, Taiwan
- Department of Public Health, China Medical University, Taichung, Taiwan
- * E-mail: (CCY); (CAH)
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13
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Saikia BJ, Das M, Sharma SK, Sekhon GS, Zomawia E, Singh YM, Mahanta J, Phukan RK. Association of a p53 codon 72 gene polymorphism with environmental factors and risk of lung cancer: a case control study in Mizoram and Manipur, a high incidence region in North East India. Asian Pac J Cancer Prev 2015; 15:10653-8. [PMID: 25605155 DOI: 10.7314/apjcp.2014.15.24.10653] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND A very high incidence of lung cancer is observed in Mizoram and Manipur, North East India. We conducted a population based case control study to establish associations of p53 codon 72 polymorphisms and interactions with environmental factors for this high incidence. MATERIAL AND METHODS A total of 272 lung cancer cases and 544 controls matched for age (±5 years), sex and ethnicity were collected and p53 codon 72 polymorphism genotypes were analyzed using a polymerase chain based restriction fragment length polymorphism assay. We used conditional multiple logistic regression analysis to calculate adjusted odds ratios and 95% confidence intervals after adjusting for confounding factors. RESULTS p53 Pro/Pro genotype was significantly associated with increased risk of lung cancer in the study population (adjusted OR=2.14, CI=1.35-3.38, p=0.001). Interactions of the p53 Pro/Pro genotype with exposure to wood smoke (adjusted OR=3.60, CI=1.85-6.98, p<0.001) and cooking oil fumes (adjusted OR=3.27, CI=1.55-6.87, p=0.002), betel quid chewing (adjusted OR=3.85, CI=1.96- 7.55, p<0.001), tobacco smoking (adjusted OR=4.42, CI=2.27-8.63, p<0.001) and alcohol consumption (adjusted OR=3.31, CI=1.10-10.03, p=0.034) were significant regarding the increased risk of lung cancer in the study population. CONCLUSIONS The present study provided preliminary evidence that a p53 codon 72 polymorphism may effect lung cancer risk in the study population, interacting synergistically with environmental factors.
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Affiliation(s)
- Bhaskar Jyoti Saikia
- Regional Medical Research Centre, N.E. Region (ICMR), Dibrugarh, Assam, India E-mail :
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14
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Wang X, Hao LR, Yue K. The TP53 codon 72 Pro/Pro genotype may be associated with an increased lung cancer risk in North China: an updated meta-analysis. Int J Clin Exp Med 2015; 8:3120-3126. [PMID: 26064201 PMCID: PMC4443035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 02/02/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND The polymorphism of TP53 codon 72, a transversion of G to C (Arg to Pro), has been demonstrated to be associated with the risk for lung cancer. However, individual studies conducted in Chinese have provided conflicting and inconclusive findings. Thus, we performed a meta-analysis by pooling all currently available case-control studies to estimate the effect of TP53 codon 72 Arg/Pro polymorphism on the development of lung cancer in the Chinese population. MATERIAL/METHODS Related studies were identified from PubMed, Springer Link, Ovid, Chinese Wanfang Data Knowledge Service Platform, Chinese National Knowledge Infrastructure (CNKI), and Chinese Biology Medicine (CBM) till 10 October 2014. Pooled ORs and 95% CIs were used to assess the strength of the associations. RESULTS A total of 12 case-control studies including 3681 lung cancer cases and 4358 controls were involved in this meta-analysis. Overall, no significant association was found between TP53 codon 72 variation and lung cancer risk when all studies in the Chinese population pooled into this meta-analysis. However, in the subgroup analysis by geographical locations, significantly increased risk was found in the population from North China under all genetic models (Allele model, OR=1.22, 95% CI: 1.04-1.43; Dominant model, OR=1.13, 95% CI: 1.01-1.25; Recessive model, OR=1.41, 95% CI: 1.07-1.87; Homozygous model, OR=1.47, 95% CI: 1.09-1.99; Heterozygous model, OR=1.40, 95% CI: 1.04-1.89). CONCLUSIONS This meta-analysis provides the evidence that TP53 codon 72 polymorphism may contribute to the lung cancer development in North China and studies with large sample size and gene-gene (gene-environment) interactions are warranted to verify this finding.
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Affiliation(s)
- Xin Wang
- Thoracic Surgery, Nanyang Central Hospital of Henan ProvinceNanyang City 473000, Henan Province, China
| | - Li-Ran Hao
- Anesthesiology, Nanyang City Orthopaedic Hospital of Henan ProvinceNanyang City 473002, Henan Province, China
| | - Kai Yue
- Tumor Three Wards, Nanyang Central Hospital of Henan ProvinceNanyang City 473000, Henan Province, China
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15
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Robles AI, Yang P, Jen J, McClary AC, Calhoun K, Bowman ED, Vähäkangas K, Greathouse KL, Wang Y, Olivo-Marston S, Wenzlaff AS, Deng B, Schwartz AG, Ryan BM. A DRD1 polymorphism predisposes to lung cancer among those exposed to secondhand smoke during childhood. Cancer Prev Res (Phila) 2014; 7:1210-8. [PMID: 25281486 DOI: 10.1158/1940-6207.capr-14-0158] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Lung cancer has a familial component which suggests a genetic contribution to its etiology. Given the strong evidence linking smoking with lung cancer, we studied miRNA-related loci in genes associated with smoking behavior. CHRNA, CHRNB gene families, CYP2A6, and DRD1 (dopamine receptor D1) were mined for SNPs that fell within the seed region of miRNA binding sites and then tested for associations with risk in a three-stage validation approach. A 3'UTR (untranslated region) SNP in DRD1 was associated with a lower risk of lung cancer among individuals exposed to secondhand smoke during childhood [OR, 0.69; 95% confidence interval (CI), 0.60-0.79; P < 0.0001]. This relationship was evident in both ever (OR, 0.74; 95% CI, 0.62-0.88; P = 0.001) and never smokers (OR, 0.61; 95% CI, 0.47-0.79; P < 0.0001), European American (OR, 0.65; 95% CI, 0.53-0.80; P < 0.0001), and African American (OR, 0.73; 95% CI, 0.62-0.88; P = 0.001) populations. Although much remains undefined about the long-term risks associated with exposure to secondhand smoke and heterogeneity between individuals in regard to their susceptibility to the effects of secondhand smoke, our data show an interaction between an SNP in the 3'UTR of DRD1 and exposure to secondhand smoke during childhood. Further work is needed to explore the mechanistic underpinnings of this SNP and the nature of the interaction between DRD1 and exposure to secondhand smoke during childhood.
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Affiliation(s)
- Ana I Robles
- Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland
| | - Ping Yang
- Mayo Clinic, Department of Health Sciences Research, Rochester, Minnesota
| | - Jin Jen
- Department of Laboratory Medicine and Pathology and Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, Minnesota
| | - Andrew C McClary
- Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland. Department of Pathology, Stanford University Hospital and Clinics, Stanford, California
| | - Kara Calhoun
- Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland
| | - Elise D Bowman
- Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland
| | - Kirsi Vähäkangas
- School of Pharmacy/Toxicology, Faculty of Health Sciences, University of Eastern Finland, Kuopio, Finland
| | - K Leigh Greathouse
- Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland
| | - Yi Wang
- Division of Preventive Medicine, School of Environmental Science and Public Health, Wenzhou Medical University, Wenzhou, Zhejiang, China. Division of Epidemiology, Health Sciences Research, Mayo Clinic, Rochester, Minnesota
| | - Susan Olivo-Marston
- Division of Epidemiology, College of Public Health, Ohio State University, Columbus, Ohio
| | - Angela S Wenzlaff
- Karmanos Cancer Institute, Department of Oncology, Wayne State University School of Medicine, Detroit, Michigan
| | - Bo Deng
- Division of Epidemiology, Health Sciences Research, Mayo Clinic, Rochester, Minnesota. Thoracic Surgery Department, Institute of Surgery Research, Daping Hospital, The Third Military Medical University, Chongqing, China
| | - Ann G Schwartz
- Karmanos Cancer Institute, Department of Oncology, Wayne State University School of Medicine, Detroit, Michigan
| | - Bríd M Ryan
- Laboratory of Human Carcinogenesis, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland.
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