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Lai TY, Ko YC, Chen YL, Lin SF. The Way to Malignant Transformation: Can Epigenetic Alterations Be Used to Diagnose Early-Stage Head and Neck Cancer? Biomedicines 2023; 11:1717. [PMID: 37371812 PMCID: PMC10296077 DOI: 10.3390/biomedicines11061717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 06/05/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
Identifying and treating tumors early is the key to secondary prevention in cancer control. At present, prevention of oral cancer is still challenging because the molecular drivers responsible for malignant transformation of the 11 clinically defined oral potentially malignant disorders are still unknown. In this review, we focused on studies that elucidate the epigenetic alterations demarcating malignant and nonmalignant epigenomes and prioritized findings from clinical samples. Head and neck included, the genomes of many cancer types are largely hypomethylated and accompanied by focal hypermethylation on certain specific regions. We revisited prior studies that demonstrated that sufficient uptake of folate, the primary dietary methyl donor, is associated with oral cancer reduction. As epigenetically driven phenotypic plasticity, a newly recognized hallmark of cancer, has been linked to tumor initiation, cell fate determination, and drug resistance, we discussed prior findings that might be associated with this hallmark, including gene clusters (11q13.3, 19q13.43, 20q11.2, 22q11-13) with great potential for oral cancer biomarkers, and successful examples in screening early-stage nasopharyngeal carcinoma. Although one-size-fits-all approaches have been shown to be ineffective in most cancer therapies, the rapid development of epigenome sequencing methods raises the possibility that this nonmutagenic approach may be an exception. Only time will tell.
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Affiliation(s)
- Ting-Yu Lai
- Institute of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu 30013, Taiwan;
- National Institute of Cancer Research, National Health Research Institutes, Miaoli 35053, Taiwan; (Y.-C.K.); (Y.-L.C.)
| | - Ying-Chieh Ko
- National Institute of Cancer Research, National Health Research Institutes, Miaoli 35053, Taiwan; (Y.-C.K.); (Y.-L.C.)
| | - Yu-Lian Chen
- National Institute of Cancer Research, National Health Research Institutes, Miaoli 35053, Taiwan; (Y.-C.K.); (Y.-L.C.)
| | - Su-Fang Lin
- National Institute of Cancer Research, National Health Research Institutes, Miaoli 35053, Taiwan; (Y.-C.K.); (Y.-L.C.)
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Tiucă RA, Tiucă OM, Pașcanu IM. The Role of Genetic Polymorphisms in Differentiated Thyroid Cancer: A 2023 Update. Biomedicines 2023; 11:biomedicines11041075. [PMID: 37189693 DOI: 10.3390/biomedicines11041075] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/24/2023] [Accepted: 03/30/2023] [Indexed: 04/05/2023] Open
Abstract
Thyroid cancer is the most common endocrine malignancy, with an increasing trend in the past decades. It has a variety of different histological subtypes, the most frequent one being differentiated thyroid cancer, which refers to papillary carcinoma, the most common histological type, followed by follicular carcinoma. Associations between genetic polymorphisms and thyroid cancer have been investigated over the years and are an intriguing topic for the scientific world. To date, the results of associations of single nucleotide polymorphisms, the most common genetic variations in the genome, with thyroid cancer have been inconsistent, but many promising results could potentially influence future research toward developing new targeted therapies and new prognostic biomarkers, thus consolidating a more personalized management for these patients. This review focuses on emphasizing the existing literature data regarding genetic polymorphisms investigated for their potential association with differentiated thyroid cancer and highlights the opportunity of using genetic variations as biomarkers of diagnosis and prognosis for thyroid cancer patients.
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Affiliation(s)
- Robert Aurelian Tiucă
- Doctoral School of Medicine and Pharmacy, George Emil Palade University of Medicine, Pharmacy, Sciences and Technology of Targu Mures, 540142 Targu Mures, Romania
- Department of Endocrinology, George Emil Palade University of Medicine, Pharmacy, Sciences and Technology of Targu Mures, 540142 Targu Mures, Romania
- Compartment of Endocrinology, Mures County Clinical Hospital, 540139 Targu Mures, Romania
| | - Oana Mirela Tiucă
- Doctoral School of Medicine and Pharmacy, George Emil Palade University of Medicine, Pharmacy, Sciences and Technology of Targu Mures, 540142 Targu Mures, Romania
- Department of Dermatology, George Emil Palade University of Medicine, Pharmacy, Sciences and Technology of Targu Mures, 540142 Targu Mures, Romania
- Dermatology Clinic, Mures County Clinical Hospital, 540015 Targu Mures, Romania
| | - Ionela Maria Pașcanu
- Department of Endocrinology, George Emil Palade University of Medicine, Pharmacy, Sciences and Technology of Targu Mures, 540142 Targu Mures, Romania
- Compartment of Endocrinology, Mures County Clinical Hospital, 540139 Targu Mures, Romania
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Liang J, Zeng J, Huang X, Zhu T, Gong Y, Dong C, Wang X, Zhao L, Xie L, Liang K, Tan Q, Cui Y, Kong B, Hui W. Super-assembly of integrated gold magnetic assay with loop-mediated isothermal amplification for point-of-care testing. NANO RESEARCH 2022; 16:1242-1251. [PMID: 35966151 PMCID: PMC9362447 DOI: 10.1007/s12274-022-4692-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/21/2022] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
UNLABELLED With the increasing global threat of various diseases and infections, it is essential to develop a fast, low-cost, and easy-to-use point-of-care testing (POCT) system for inspections at all levels of medical institutions and self-examination at home. In this work, gold magnetic nanoparticles (GMNPs) are used as the key material, and a rapid visual detection method is designed through integrating loop-mediated isothermal amplification (LAMP) and lateral flow assay (LFA) biosensor for detecting a variety of analytes which includes whole blood, buccal swabs, and DNA. It is worth to note that the proposed method does not need DNA extraction. Furthermore, uracil DNA glycosylase (UDG) is employed to eliminate carrier contamination for preventing false positive results. The whole detection process can be finished within 25 min. The accuracy of detection is measured by assessing the polymorphisms of the methylenetetrahydrofolate reductase (MTHFR) C677T. The detection limit of the newly developed extraction-free detection system for MTHFR C677T is 0.16 ng/μL. A preliminary clinical study of the proposed method is carried out by analyzing 600 clinical samples (including 200 whole blood samples, 100 buccal swabs, and 300 genomic DNA samples). The results indicate that the proposed method is 100% consistent with the sequencing results which provides a new choice for POCT and shows a broad application prospect in all levels of medical clinics and at home. ELECTRONIC SUPPLEMENTARY MATERIAL Supplementary material (details for MTHFR C677T primer sequences, the cell count results of samples at different dilution ratios, genotyping results and frequency samples, a Hardy-Weinberg equilibrium test, the sensitivity of the system, detection results of multiple samples, and optimization of the system) is available in the online version of this article at 10.1007/s12274-022-4692-9.
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Affiliation(s)
- Jianping Liang
- The College of life science, Northwest University, Xi’an, 710069 China
| | - Jie Zeng
- Department of Chemistry, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200438 China
| | - Xiaojuan Huang
- The College of life science, Northwest University, Xi’an, 710069 China
| | - Tengteng Zhu
- The College of life science, Northwest University, Xi’an, 710069 China
| | - Yonglong Gong
- The College of life science, Northwest University, Xi’an, 710069 China
| | - Chen Dong
- The College of life science, Northwest University, Xi’an, 710069 China
| | - Xiangrong Wang
- The College of life science, Northwest University, Xi’an, 710069 China
- Provincial Key Laboratory of Biotechnology of Shaanxi Province, Northwest University, Xi’an, 710069 China
| | - Lingzhi Zhao
- The College of life science, Northwest University, Xi’an, 710069 China
| | - Lei Xie
- Department of Chemistry, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200438 China
| | - Kang Liang
- School of Chemical Engineering, Graduate School of Biomedical Engineering, and Australian Centre for NanoMedicine, University of New South Wales, Sydney, NSW 2052 Australia
| | - Qiongxiang Tan
- The College of life science, Northwest University, Xi’an, 710069 China
| | - Yali Cui
- The College of life science, Northwest University, Xi’an, 710069 China
- Shaanxi Provincial Engineering Research Center for Nano-Biomedical Detection, Xi’an, 710077 China
| | - Biao Kong
- Department of Chemistry, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200438 China
| | - Wenli Hui
- The College of life science, Northwest University, Xi’an, 710069 China
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, Northwest University, Xi’an, 710069 China
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Hardie TL, Polek C, Garcia V, Leader A, Gonzalez L. Patterns of Alcohol Abstinence in Mexican Women Residing in the United States: Effects of Nativity and Duration in the United States. HISPANIC HEALTH CARE INTERNATIONAL 2019; 17:156-161. [PMID: 31195832 DOI: 10.1177/1540415319854053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Explore changes in abstinence rates in Mexican women (MW) residing in the United States based on nativity and time in the United States as an indicator risks for future alcohol-related disorders. DESIGN A secondary analysis of data from the National Health Interview Survey evaluated rates of abstinence between 2000 and 2017. A logistic regression was completed to address the impact of age, years in the United States, sample years. SAMPLE A total of 29,860 MW surveyed over an 18-year period that included those born in and outside the United States. PRIMARY RESEARCH VARIABLES Dependent variable was abstinence status; independent variables included nativity, year of survey, age, years in the United States (if immigrant). RESULTS Immigrant MW showed higher rates of alcohol abstinence than U.S.-born MW across all years, but regardless of place of birth, fewer MW are abstaining over time. Among immigrant MW, those only in the United States greater than 15 years had a greater risk of becoming a drinker than those in the United States less than 5 years. CONCLUSION There are declining rates of alcohol abstinence among MW regardless of immigration status. The lower rate of abstinent MW increases their risk for alcohol-related disorders. Assessing MW's use of alcohol and providing targeted education is essential.
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Affiliation(s)
| | | | - Victor Garcia
- Mid-Atlantic Research and Training Institute for Community and Behavioral Health, Indiana, PA, USA
| | - Amy Leader
- Thomas Jefferson University, Philadelphia, PA, USA
| | - Laura Gonzalez
- Mid-Atlantic Research and Training Institute for Community and Behavioral Health, Indiana, PA, USA
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Zara-Lopes T, Galbiatti-Dias ALS, Castanhole-Nunes MMU, Padovani-Júnior JA, Maniglia JV, Pavarino EC, Goloni-Bertollo EM. Polymorphisms in MTHFR, MTR, RFC1 and CßS genes involved in folate metabolism and thyroid cancer: a case-control study. Arch Med Sci 2019; 15:522-530. [PMID: 30899306 PMCID: PMC6425207 DOI: 10.5114/aoms.2018.73091] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 04/15/2017] [Indexed: 02/07/2023] Open
Abstract
INTRODUCTION Polymorphisms in genes coding enzymes involved in folate metabolism may cause alterations in this metabolic pathway and contribute to carcinogenesis, because folate is essential for DNA synthesis, methylation and repair. The objective of this study was to investigate the association of MTHFR 677C>T (rs1801133), MTR 2756A>G (rs1805087), RFC1 80A>G (rs1051266) and CßS 844ins(68) (no rs#) polymorphisms and thyroid cancer development. The association of these polymorphisms with demographic risk factors and clinical histopathological parameters was also evaluated. MATERIAL AND METHODS The study is a case-control analysis with a total of 462 individuals (151 patients and 311 controls). Polymerase chain reaction-restriction fragment length polymorphism technique was used for genotyping. The χ2 and multiple logistic regression were utilized for statistical analysis. RESULTS The polymorphisms analysis revealed an association between the MTHFR 677C>T polymorphism (OR = 2.87, 95% CI: 1.50-5.48, p < 0.01, codominant model), (OR = 1.76, 95% CI: 1.18-2.64, p < 0.01, dominant model), (OR = 2.37, 95% CI: 1.28-4.39, p < 0.01, recessive model) and thyroid cancer. RFC1 80A>G polymorphism also was associated with thyroid cancer under recessive mode of inheritance (OR = 1.55; 95% CI: 1.02-2.38; p = 0.04); however, this polymorphism showed Hardy-Weinberg disequilibrium in the control group (χ2 = 24.71, p < 0.001). Furthermore, alcohol (OR = 1.56, 95% CI: 1.36-1.89, p < 0.01) and tobacco consumption (OR = 1.97, 95% CI: 1.28-3.04, p < 0.01) were associated with increased risk for thyroid cancer. The MTR 2756A>G polymorphism showed an association with tumor extent (OR = 2.69, 95% CI: 1.27-5.71, p < 0.01) and aggressiveness (OR = 4.51, 95% CI: 1.67-12.1, p < 0.01). CONCLUSIONS MTHFR 677C>T is significantly associated with increased risk for thyroid cancer and MTR 2756A>G is associated with tumor extent and aggressiveness. In addition, alcohol and tobacco consumption were associated with increased risk of thyroid cancer. These results may contribute to a better prognosis for thyroid cancer.
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Affiliation(s)
- Tairine Zara-Lopes
- Genetics and Molecular Biology Research Unit – UPGEM, Molecular Biology Department, São José do Rio Preto Medical School – FAMERP, São Paulo, Brazil
| | - Ana Lívia Silva Galbiatti-Dias
- Genetics and Molecular Biology Research Unit – UPGEM, Molecular Biology Department, São José do Rio Preto Medical School – FAMERP, São Paulo, Brazil
| | - Márcia M. Urbanin Castanhole-Nunes
- Genetics and Molecular Biology Research Unit – UPGEM, Molecular Biology Department, São José do Rio Preto Medical School – FAMERP, São Paulo, Brazil
| | - João Armando Padovani-Júnior
- Otorhinolaryngology and Head and Neck Surgery Department, São José do Rio Preto Medical School – FAMERP, São Paulo, Brazil
| | - José Victor Maniglia
- Otorhinolaryngology and Head and Neck Surgery Department, São José do Rio Preto Medical School – FAMERP, São Paulo, Brazil
| | - Erika Cristina Pavarino
- Genetics and Molecular Biology Research Unit – UPGEM, Molecular Biology Department, São José do Rio Preto Medical School – FAMERP, São Paulo, Brazil
| | - Eny Maria Goloni-Bertollo
- Genetics and Molecular Biology Research Unit – UPGEM, Molecular Biology Department, São José do Rio Preto Medical School – FAMERP, São Paulo, Brazil
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Yang S, Lee J, Park Y, Lee EK, Hwangbo Y, Ryu J, Sung J, Kim J. Interaction between alcohol consumption and methylenetetrahydrofolate reductase polymorphisms in thyroid cancer risk: National Cancer Center cohort in Korea. Sci Rep 2018; 8:4077. [PMID: 29511243 PMCID: PMC5840348 DOI: 10.1038/s41598-018-22189-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 02/19/2018] [Indexed: 12/15/2022] Open
Abstract
The effect of alcohol intake on thyroid cancer is unestablished, and its interaction effects with genetic susceptibility are unclear. In this case-control study, the relationship among alcohol intake, the methylenetetrahydrofolate reductase (MTHFR) gene, and thyroid cancer risk has been evaluated. In total, 642 cases and 642 controls of Korean origin were included, and the genetic variants C677T and A1298C of the MTHFR gene were analysed. The interactions between alcohol-consumption behaviour and genetic variants were analysed with a likelihood ratio test, wherein a multiplicative interaction term was added to a logistic regression model. There was an independent association between the C677T polymorphism and thyroid cancer risk but not for drinking history. For C677T C/C homozygotes, individuals with a history of alcohol consumption showed a protective OR (95% CI) of 0.42 (0.15–1.13) when never drinkers were used as the reference. However, this protective association was not observed among individuals with a T+ allele with an OR (95% CI) of 1.27 (0.89–1.82), showing different directions for the association between genotypes with a significant interaction (Pinteraction = 0.009). Based on the genetic characteristics of individuals included, an interaction between alcohol intake and MTHFR C677T may modify the risk of thyroid cancer.
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Affiliation(s)
- Sarah Yang
- Molecular Epidemiology Branch, Division of Cancer Epidemiology and Prevention, Research Institute, National Cancer Center, Seoul, South Korea.,Complex Disease & Genomic Epidemiology Branch, Department of Public Health, School of Public Health, Seoul National University, Seoul, South Korea
| | - Jeonghee Lee
- Molecular Epidemiology Branch, Division of Cancer Epidemiology and Prevention, Research Institute, National Cancer Center, Seoul, South Korea
| | - Yoon Park
- Molecular Epidemiology Branch, Division of Cancer Epidemiology and Prevention, Research Institute, National Cancer Center, Seoul, South Korea
| | - Eun Kyung Lee
- Center for Thyroid Cancer, National Cancer Center Hospital, National Cancer Center, Seoul, South Korea
| | - Yul Hwangbo
- Center for Thyroid Cancer, National Cancer Center Hospital, National Cancer Center, Seoul, South Korea
| | - Junsun Ryu
- Center for Thyroid Cancer, National Cancer Center Hospital, National Cancer Center, Seoul, South Korea
| | - Joohon Sung
- Complex Disease & Genomic Epidemiology Branch, Department of Public Health, School of Public Health, Seoul National University, Seoul, South Korea
| | - Jeongseon Kim
- Molecular Epidemiology Branch, Division of Cancer Epidemiology and Prevention, Research Institute, National Cancer Center, Seoul, South Korea.
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Jiao X, Luo Y, Yang B, Jing L, Li Y, Liu C, Jing X, Wang F, Wang Y, Du Z, Gao Y. The MTHFR C677T mutation is not a risk factor recognized for HBV-related HCC in a population with a high prevalence of this genetic marker. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2017; 49:66-72. [PMID: 28082187 DOI: 10.1016/j.meegid.2017.01.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 01/03/2017] [Accepted: 01/05/2017] [Indexed: 02/06/2023]
Abstract
BACKGROUND Polymorphism of the methylenetetrahydrofolate reductase (MTHFR) gene can affect disease progression in HBV infection. However, the results from different reports are inconsistent. The aim of this study was to investigate the association between the MTHFR C677T polymorphism and the outcome of HBV infection in a Tianjin Han population. METHODS TaqMan SNP genotyping was employed to determine the alleles and genotypes of MTHFR C677T in 2511 subjects from various stages of HBV infection and 549 healthy controls. RESULTS Of the 3060 subjects, the genotypic frequencies were CT 48.9%, TT 29.3% and CC 21.8%; the allelic frequencies were T 53.8% and C 46.2%. There was no significant difference in genotypic or allelic distribution among the different disease groups. When either healthy subjects or self-limited subjects were used as controls, the TT genotype and the T allele conferred protective effects against hepatocellular carcinoma (HCC) (HCC vs healthy subjects: OR=0.588, 95% CI=0.413-0.836, P=0.003; OR=0.768, 95% CI=0.645-0.915, P=0.003, respectively. HCC vs self-limited subjects: OR=0.598, 95% CI=0.404-0.886, P=0.010; OR=0.772, 95% CI=0.635-0.940, P=0.010, respectively). After sub-stratification by gender, the prevalence of the TT genotype or T allele was the lowest in the male HCC group (TT 23.5%, T 49.8%). The protective effects of the TT genotype and the T allele were observed in male HCC and cirrhotic subjects (HCC vs self-limited subjects: OR=0.470, 95% CI=0.288-0.766, P=0.002; OR=0.681, 95% CI=0.535-0.866, P=0.002, respectively. Liver cirrhosis vs self-limited subjects: OR=0.624, 95% CI=0.392-0.992, P=0.046; OR=0.791, 95% CI=0.627-0.998, P=0.048, respectively), but not in female. When the subjects were stratified according to the clinical features, no statistically significant difference in the genotypic distribution was observed (P>0.05). CONCLUSIONS The TT genotype and T allele of MTHFR C677T may confer a protective effect on disease progression to HCC in HBV-infected individuals, especially among male patients, in a population with a high prevalence of this genetic marker.
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Affiliation(s)
- Xiaolei Jiao
- Tianjin Key Laboratory of Artificial Cells, Institute for Hepatobiliary Disease, Tianjin Third Central Hospital, Tianjin 300170, China
| | - Ying Luo
- Tianjin Key Laboratory of Artificial Cells, Institute for Hepatobiliary Disease, Tianjin Third Central Hospital, Tianjin 300170, China
| | - Bin Yang
- Tianjin Key Laboratory of Artificial Cells, Institute for Hepatobiliary Disease, Tianjin Third Central Hospital, Tianjin 300170, China
| | - Li Jing
- Tianjin Key Laboratory of Artificial Cells, Institute for Hepatobiliary Disease, Tianjin Third Central Hospital, Tianjin 300170, China
| | - Yayue Li
- Tianjin Key Laboratory of Artificial Cells, Institute for Hepatobiliary Disease, Tianjin Third Central Hospital, Tianjin 300170, China
| | - Changzheng Liu
- Tianjin Key Laboratory of Artificial Cells, Institute for Hepatobiliary Disease, Tianjin Third Central Hospital, Tianjin 300170, China
| | - Xiang Jing
- Department of Ultrasound, Tianjin Third Central Hospital, Tianjin 300170, China
| | - Fengmei Wang
- Department of Hepatology, Tianjin Third Central Hospital, Tianjin 300170, China
| | - Yijun Wang
- Department of Hepatobiliary Surgery, Tianjin Third Central Hospital, Tianjin 300170, China
| | - Zhi Du
- Tianjin Key Laboratory of Artificial Cells, Institute for Hepatobiliary Disease, Tianjin Third Central Hospital, Tianjin 300170, China; Department of Hepatobiliary Surgery, Tianjin Third Central Hospital, Tianjin 300170, China
| | - Yingtang Gao
- Tianjin Key Laboratory of Artificial Cells, Institute for Hepatobiliary Disease, Tianjin Third Central Hospital, Tianjin 300170, China.
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Zhuo X, Ye H, Li Q, Xiang Z, Zhang X. Is MDM2 SNP309 Variation a Risk Factor for Head and Neck Carcinoma?: An Updated Meta-Analysis Based on 11,552 Individuals. Medicine (Baltimore) 2016; 95:e2948. [PMID: 26945408 PMCID: PMC4782892 DOI: 10.1097/md.0000000000002948] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Murine double minute-2 (MDM2) is a negative regulator of P53, and its T309G polymorphism has been suggested as a risk factor for a variety of cancers. Increasing evidence has shown the association of MDM2 T309G polymorphism with head and neck carcinoma (HNC) risk. However, the results are inconsistent. Thus, we performed a meta-analysis to elucidate the association. The meta-analysis retrieved studies published up to August 2015, and essential information was extracted for analysis. Separate analyses on ethnicity, source of controls, sample size, detection method, and cancer types were also conducted. Odds ratios (ORs) and their 95% confidence intervals (CIs) were used to estimate the association. Pooled data from 16 case-control studies including 4625 cases and 6927 controls failed to indicate a significant association. However, in the subgroup analysis of sample sizes, an increased risk was observed in the largest sample size group (>1000) under a recessive model (OR = 1.52; 95% CI = 1.08-2.13). Increased risks were also found in the nasopharyngeal cancer in the subgroup analysis of cancer types (GG vs TT: OR = 2.07; 95% CI = 1.38-3.12; dominant model: OR = 1.48; 95% CI = 1.13-1.93; recessive model: OR = 1.76; 95% CI = 1.17-2.65). The results suggest that homozygote GG alleles of MDM2 SNP309 may be a low-penetrant risk factor for HNC, and G allele may confer nasopharyngeal cancer susceptibility.
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Affiliation(s)
- Xianlu Zhuo
- From the Department of Otolaryngology, Southwest Hospital, Third Military Medical University, Chongqing (XZ, QL, ZX, XZ); and Affiliated Hospital of Guiyang Medical University, Guiyang, China (XZ, HY)
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Hui W, Zhang S, Zhang C, Wan Y, Zhu J, Zhao G, Wu S, Xi D, Zhang Q, Li N, Cui Y. A novel lateral flow assay based on GoldMag nanoparticles and its clinical applications for genotyping of MTHFR C677T polymorphisms. NANOSCALE 2016; 8:3579-3587. [PMID: 26804455 DOI: 10.1039/c5nr07547e] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Current techniques for single nucleotide polymorphism (SNP) detection require tedious experimental procedures and expensive and sophisticated instruments. In this study, a visual genotyping method has been successfully established via combining ARMS-PCR with gold magnetic nanoparticle (GoldMag)-based lateral flow assay (LFA) and applied to the genotyping of methylenetetrahydrofolate reductase (MTHFR) C677T. C677T substitution of the gene MTHFR leads to an increased risk of diseases. The genotyping result is easily achievable by visual observation within 5 minutes after loading of the PCR products onto the LFA device. The system is able to accurately assess a broad detection range of initial starting genomic DNA amounts from 5 ng to 1200 ng per test sample. The limit of detection reaches 5 ng. Furthermore, our PCR-LFA system was applied to clinical trials for screening 1721 individuals for the C677T genotypes. The concordance rate of the genotyping results detected by PCR-LFA was up to 99.6% when compared with the sequencing results. Collectively, our PCR-LFA has been proven to be rapid, accurate, sensitive, and inexpensive. This new method is highly applicable for C677T SNP screening in laboratories and clinical practices. More promisingly, it could also be extended to the detection of SNPs of other genes.
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Affiliation(s)
- Wenli Hui
- College of Life Sciences, Northwest University, Xi'an, 710069, China.
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