1
|
Yang Y, Hui Y, Guo Z, Song X, Zhu H, Pan C, Lan X. Investigation of the association between goat DNMT3B gene polymorphism and growth traits. Anim Biotechnol 2023; 34:2492-2498. [PMID: 35895437 DOI: 10.1080/10495398.2022.2101115] [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] [Indexed: 11/01/2022]
Abstract
The DNA methyltransferase 3 beta (DNMT3B) gene is key for DNA methylation and has been well recognized in regulating growth and development. A previous observation indicated that an 11-bp indel of DNMT3B affected the reproductive traits in goats, yet the effect of this polymorphism on body measurement traits in goats has not been reported. This study aims to investigate the associations between DNMT3B gene polymorphism and goat growth traits. We investigated this 11-bp indel in 2184 goats and three genotypes have been found in Shaanbei white cashmere goat (SBWC): insertion/insertion (II), deletion/deletion (DD) and insertion/deletion (ID). Only ID and DD genotypes were detected in Nubian goats and Guizhou heima goat (GZHM). The allele frequencies analyzed revealed that the 'D' allele frequencies were higher in all three goat breeds. Further association analysis demonstrated that this indel is markedly associated with the cannon circumference (CC) and cannon circumference index (CCI) of SBWC and cannon circumference (CC) of Nubian goats (p < .05). The CC and CCI are essential indicators to measure the growth status of goats. In summary, our study sheds some light on the potential impact of the 11-bp indel polymorphism of the DNMT3B gene on improving the growth traits in goats.
Collapse
Affiliation(s)
- Yuta Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Yiqing Hui
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Zhengang Guo
- Bijie Animal Husbandry and Veterinary Science Research Institute, Bijie, Guizhou, China
| | - Xiaoyue Song
- College of Life Sciences, Yulin University, Yulin, China
| | - Haijing Zhu
- College of Life Sciences, Yulin University, Yulin, China
| | - Chuanying Pan
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Xianyong Lan
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| |
Collapse
|
2
|
Bayramov B, Bayramov N, Aslanov H, Abbasov M, Mammadova S, Eynullazada K, Gahramanova F, Yagublu V. Investigation of the DNMT3B -579 G>T Promoter Polymorphism in Patients with Colorectal Cancer in an Azerbaijani Population. Asian Pac J Cancer Prev 2022; 23:1879-1884. [PMID: 35763627 PMCID: PMC9587849 DOI: 10.31557/apjcp.2022.23.6.1879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 06/13/2022] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVE The main aim of the present study was to determine the clinical significance of the DNA methyltransferase 3B (DNMT3B) gene -579 G>T polymorphism in colorectal cancer (CRC) patients. METHODS A total of 140 patients with CRC and 164 healthy individuals were included in the study. According to the manufacturer's instructions, DNA was isolated from blood, and genotypes were determined on agarose gel by the PCR-RFLP method. Genotype confirmation was performed using Sanger sequencing in randomly selected samples. RESULTS When comparing the case and control groups, heterozygous GT (OR=0.53; 95% CI=0.32-0.88), under the dominant model (OR=0.53; 95% CI=0.33-0.87), and the mutant T allele (OR=0.71; 95% CI=0.51-0.98) were statistically associated with a reduced risk of CRC. However, when the age, pathological tumor grade and stage, smoking habit, and alcohol consumption were compared, no significant relationship was determined (P>0.05). Furthermore, among males, heterozygous GT was associated with a reduced risk of CRC (OR=0.40; 95% CI=0.19-0.84). CONCLUSION Our study highlighted that the -579 G>T polymorphism of the DNMT3B gene plays a protective role against CRC development.
Collapse
Affiliation(s)
- Bayram Bayramov
- Department of Molecular Genetics and Genomics, Genetic Resources Institute of Azerbaijan National Science Academy, Baku, Azerbaijan.
| | - Nuru Bayramov
- First Surgical Disease Department, Azerbaijan Medical University, Baku, Azerbaijan.
| | - Hazi Aslanov
- Department of Surgery, Scientific Center of Surgery, Baku, Azerbaijan.
| | - Mehraj Abbasov
- Department of Molecular Genetics and Genomics, Genetic Resources Institute of Azerbaijan National Science Academy, Baku, Azerbaijan.
| | - Shabnam Mammadova
- First Surgical Disease Department, Azerbaijan Medical University, Baku, Azerbaijan.
| | | | - Farah Gahramanova
- First Surgical Disease Department, Azerbaijan Medical University, Baku, Azerbaijan.
| | - Vugar Yagublu
- Department of Surgery, Scientific Center of Surgery, Baku, Azerbaijan.
| |
Collapse
|
3
|
Mensah IK, Norvil AB, AlAbdi L, McGovern S, Petell CJ, He M, Gowher H. Misregulation of the expression and activity of DNA methyltransferases in cancer. NAR Cancer 2021; 3:zcab045. [PMID: 34870206 PMCID: PMC8634572 DOI: 10.1093/narcan/zcab045] [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: 09/20/2021] [Revised: 10/29/2021] [Accepted: 11/10/2021] [Indexed: 12/15/2022] Open
Abstract
In mammals, DNA methyltransferases DNMT1 and DNMT3's (A, B and L) deposit and maintain DNA methylation in dividing and nondividing cells. Although these enzymes have an unremarkable DNA sequence specificity (CpG), their regional specificity is regulated by interactions with various protein factors, chromatin modifiers, and post-translational modifications of histones. Changes in the DNMT expression or interacting partners affect DNA methylation patterns. Consequently, the acquired gene expression may increase the proliferative potential of cells, often concomitant with loss of cell identity as found in cancer. Aberrant DNA methylation, including hypermethylation and hypomethylation at various genomic regions, therefore, is a hallmark of most cancers. Additionally, somatic mutations in DNMTs that affect catalytic activity were mapped in Acute Myeloid Leukemia cancer cells. Despite being very effective in some cancers, the clinically approved DNMT inhibitors lack specificity, which could result in a wide range of deleterious effects. Elucidating distinct molecular mechanisms of DNMTs will facilitate the discovery of alternative cancer therapeutic targets. This review is focused on: (i) the structure and characteristics of DNMTs, (ii) the prevalence of mutations and abnormal expression of DNMTs in cancer, (iii) factors that mediate their abnormal expression and (iv) the effect of anomalous DNMT-complexes in cancer.
Collapse
Affiliation(s)
- Isaiah K Mensah
- Department of Biochemistry, Purdue University, West Lafayette, IN 47907, USA
| | | | - Lama AlAbdi
- Department of Zoology, Collage of Science, King Saud University, Riyadh, Saudi Arabia
| | - Sarah McGovern
- Department of Biochemistry, Purdue University, West Lafayette, IN 47907, USA
| | | | - Ming He
- Department of Biochemistry, Purdue University, West Lafayette, IN 47907, USA
| | - Humaira Gowher
- Department of Biochemistry, Purdue University, West Lafayette, IN 47907, USA
| |
Collapse
|
4
|
Yazdanpanahi N, Etemadifar M, Shams E. DNMT3B-579G>T (rs1569686G>T) polymorphism and the risk of multiple sclerosis in a subset of Iranian population. IRANIAN JOURNAL OF NEUROLOGY 2019; 18:70-75. [PMID: 31565203 PMCID: PMC6755508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Background: Deoxyribonucleic acid (DNA) methyltransferase 3 beta (DNMT3B) gene encodes an MT enzyme involving in de novo methylation of DNA. The present investigation aimed to explore the association of DNMT3B-579G>T (rs1569686) polymorphism with multiple sclerosis (MS). Methods: 130 Iranian patients with MS and 130 controls were genotyped for the DNMT3B-579G>T using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. Results: There was no statistically significant association between DNMT3B-579G>T and susceptibility to MS. The alleles and genotypes of DNMT3B-579G>T did not have different risks of MS development under various models [T vs. G (P = 0.86); GTvs. GG (P = 0.48); TT vs. GG (P > 0.99); GT+TT vs. GG (P = 0.60), and TT vs. GG+GT (P = 0.87)]. Also, there was no statistically significant association between genotypes and clinical and demographic characteristics of patients (P > 0.05). Conclusion: The current findings suggest that DNMT3B-579G>T is probably not a crucial potential risk marker in molecular diagnostics of MS among Iranian. However, to the best of our knowledge, this is the first genetic association study about the DNMT3B polymorphisms and MS. Therefore, further surveys should be included to estimate the exact relevance of DNMT3B gene to the development of autoimmune disorders like MS.
Collapse
Affiliation(s)
- Nasrin Yazdanpanahi
- Department of Biology and Genetics, Falavarjan Branch, Islamic Azad University, Isfahan, Iran
| | - Masoud Etemadifar
- Department of Neurology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran,Isfahan Multiple Sclerosis Research Center, Isfahan, Iran
| | - Elaheh Shams
- Young Researchers and Elite Club, Falavarjan Branch, Islamic Azad University, Isfahan, Iran
| |
Collapse
|
5
|
Chen B, Wang J, Gu X, Zhang J, Zhang J, Feng X. The DNMT3B -579G>T Polymorphism Is Significantly Associated With the Risk of Gastric Cancer but not Lung Cancer in Chinese Population. Technol Cancer Res Treat 2017; 16:1259-1265. [PMID: 29332452 PMCID: PMC5762089 DOI: 10.1177/1533034617740475] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 09/12/2017] [Accepted: 10/09/2017] [Indexed: 01/09/2023] Open
Abstract
The -149C>T and -579G>T, 2 single nucleotide polymorphisms in de novo methyltransferase 3B gene promoter, have been previously reported to potentially alter the promoter activity and to influence cancer risk. However, the results from previous studies remain conflicting rather than conclusive. In view of this, we conducted a case-control study and then a meta-analysis to examine the association between these 2 single-nucleotide polymorphisms with risk of lung and gastric cancer in Chinese population. The genotyping was performed by polymerase chain reaction-restriction fragment length polymorphism and confirmed by sequencing. In this case-control study, no significant association with lung or gastric cancer risk was observed for -149C>T, while -579G>T was significantly correlated with the risk of gastric cancer but not lung cancer. Moreover, haplotype analysis showed that haplotype -149T/-579 T, which carried the risk -579 T allele, significantly increased the susceptibility to gastric cancer. However, none of the haplotypes was associated with the risk of lung cancer. The following meta-analysis involved only Chinese population and further confirmed the significant association of -579G>T with gastric cancer but not lung cancer and suggested no significant association between -149C>T and risk of lung or gastric cancer. Collectively, DNMT3B -579G>T polymorphism is associated with gastric cancer risk in Chinese population, and the -579G>T may be used as a genetic biomarker to predict the risk of gastric cancer in Chinese population.
Collapse
Affiliation(s)
- Bifeng Chen
- Department of Biological Science and Technology, School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, Hubei, China
| | - Jingdong Wang
- Department of Biological Science and Technology, School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, Hubei, China
| | - Xiuli Gu
- Center of Reproductive Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Wuhan Tongji Reproductive Medicine Hospital, Wuhan, Hubei, China
| | - Jingli Zhang
- Department of Biological Science and Technology, School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, Hubei, China
| | - Jiankun Zhang
- Department of Biological Science and Technology, School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, Hubei, China
| | - Xianhong Feng
- Clinical Laboratory, Wuhan Xinzhou District People’s Hospital, Wuhan, China
| |
Collapse
|
6
|
Gao M, He D, Meng F, Li J, Shen Y. Associations of DNMT3B -149C>T and -2437T>A polymorphisms and lung cancer risk in Chinese population. World J Surg Oncol 2016; 14:293. [PMID: 27876061 PMCID: PMC5118893 DOI: 10.1186/s12957-016-1052-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 11/07/2016] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND DNMT3B polymorphisms are associated with the susceptibility of lung cancer. DNMT3B -2437T>A is a novel polymorphism, and its influence on the risk of lung cancer in Chinese was investigated in this study. In addition, effect of DNMT3B -149C>T polymorphism on lung cancer was also explored. METHODS Genotyping in subjects were performed by PCR-RFLP. Haplotype frequencies were estimated by estimating haplotype software. Adjusted odds ratios (ORs) with 95% confidence intervals (CIs) were calculated by unconditional logistic regression analysis. RESULTS Neither of the two polymorphisms was correlated with lung cancer (-149C>T: CT+TT vs CC: OR = 0.78, 95%CI, 0.57 to 1.05, P = 0.361; -2437T>A: AT+AA vs TT: OR = 0.99, 95%CI, 0.74 to 1.33, P = 0.168). In stratification analysis, T-allele carrier genotype of -149C>T polymorphism resulted in a reduced lung cancer risk at stage II, compared with CC (OR = 0.46, 95%CI, 0.28 to 0.77, P = 0.023). In haplotype analysis, when -149C/-2437T was used as reference, the other combined genotypes of the two polymorphisms had no significant effect on lung cancer risk (P > 0.05). CONCLUSIONS The two DNMT3B polymorphisms are not correlated with lung cancer risk among Chinese population nor the haplotype of them.
Collapse
Affiliation(s)
- Min Gao
- Department of Neurology, the Fourth Hospital of Harbin Medical University, 37 Yiyuan Street, Harbin, Heilongjiang 150001 China
| | - Daqiang He
- Department of Radiology, the Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang China
| | - Fanji Meng
- Department of Cardiology, the Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang China
| | - Jianing Li
- Department of Geriatrics, the Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang China
| | - Yan Shen
- Department of Geriatrics, the Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang China
| |
Collapse
|
7
|
Zhang Y, Xu H, Shen Y, Gong Z, Xiao T. Association of DNMT3B -283 T > C and -579 G > T polymorphisms with decreased cancer risk: evidence from a meta-analysis. Int J Clin Exp Med 2015; 8:13028-13038. [PMID: 26550225 PMCID: PMC4612910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Accepted: 08/12/2015] [Indexed: 06/05/2023]
Abstract
Numerous studies have explored the association of polymorphisms in the DNA methyltransferase 3b (DNMT3B) gene with the risk of different types of cancer, but yielded controversial results. Therefore, we performed a meta-analysis to derive a more precise estimation of the association between three widely-studied DNMT3B polymorphisms and overall cancer susceptibility. Totally, 4 studies with 1234 cases and 1337 controls were eligible for DNMT3B -283 T > C (rs6087990), 19 studies with 5332 cases and 7407 controls for DNMT3B -149 C > T (rs2424913), and 14 studies with 3933 cases and 4436 controls for DNMT3B -579 G > T (rs1569686). Overall, DNMT3B -283 T > C was associated with a significantly reduced risk of overall cancer (T vs. C: OR = 0.84, 95% CI = 0.71-0.99, P = 0.039). Likewise, the association of DNMT3B -579 G > T with a decreased overall cancer risk was also observed (heterozygous: OR = 0.77, 95% CI = 0.65-0.91, P = 0.003 and dominant: OR = 0.80, 95% CI = 0.66-0.98, P = 0.029); in the subgroup analysis, the protective association was found for lung and colorectal cancer, but not for head and neck cancer. Finally, the pooled analysis showed no significant association between DNMT3B -149 C > T and overall cancer susceptibility, but stratification analysis indicated that this polymorphism decreased the risk of developing head and neck cancer (heterozygous: OR = 0.73, 95% CI = 0.59-0.90, P = 0.003 and dominant: OR = 0.76, 95% CI = 0.61-0.93, P = 0.009). In conclusion, our results suggested that DNMT3B -283 T > C and DNMT3B -579 G > T but DNMT3B -149 C > T might confer protection against overall cancer risk. In the future, large and well-designed case-control studies are needed to validate our findings.
Collapse
Affiliation(s)
- Yang Zhang
- Department of Oncology, Xiangyang Central Hospital, Medical College, Hubei University of Arts and Science Xiangyang, Hubei 441000, P.R. China
| | - Haisheng Xu
- Department of Oncology, Xiangyang Central Hospital, Medical College, Hubei University of Arts and Science Xiangyang, Hubei 441000, P.R. China
| | - Yi Shen
- Department of Oncology, Xiangyang Central Hospital, Medical College, Hubei University of Arts and Science Xiangyang, Hubei 441000, P.R. China
| | - Zhimin Gong
- Department of Oncology, Xiangyang Central Hospital, Medical College, Hubei University of Arts and Science Xiangyang, Hubei 441000, P.R. China
| | - Tianlin Xiao
- Department of Oncology, Xiangyang Central Hospital, Medical College, Hubei University of Arts and Science Xiangyang, Hubei 441000, P.R. China
| |
Collapse
|
8
|
Duan F, Cui S, Song C, Dai L, Zhao X, Zhang X. Systematic evaluation of cancer risk associated with DNMT3B polymorphisms. J Cancer Res Clin Oncol 2015; 141:1205-20. [PMID: 25515408 DOI: 10.1007/s00432-014-1894-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 12/02/2014] [Indexed: 02/08/2023]
Abstract
PURPOSE The aim of our study is to provide a precise quantification for the association between DNA methyltransferase 3B (DNMT3B) variations (rs2424913 C/T, rs1569686 G/T, rs6087990 T/C and rs2424908 T/C) and the risk of cancer. METHODS We performed a systematic literature review and assessed the methodological quality of included case-control designed studies based on Newcastle-Ottawa Scale. Pooled odds ratios (ORs) and corresponding 95% confidence intervals (95% CIs) were calculated to assess the strengths of the associations. RESULTS We identified 34 studies for pooled analyses. Overall, the results demonstrated that rs2424913 polymorphism was significantly associated with negative cancer risk in the African population (CT vs TT: OR 0.10, 95% CI 0.02-0.63, P = 0.01; CT+CC vs TT: OR 0.14, 95% CI 0.03-0.76, P = 0.02), and the rs1569686 polymorphism was significantly associated with a subtly decreased cancer risk (GT vs TT: OR 0.80, 95% CI 0.72-0.90, P < 0.01; GT+GG vs TT: OR 0.84, 95% CI 0.76-0.94, P < 0.01), particularly in the Asian population (GT vs TT: OR 0.79, 95% CI 0.66-0.96, P < 0.01) and in colorectal cancer subgroup (G vs T: OR 0.69, 95% CI 0.54-0.88, P < 0.01). In addition, the rs6087990 polymorphism was associated with decreased risk in Asian population (T vs C: OR 0.77, 95% CI 0.62-0.96, P = 0.02). Similarly, the rs2424908 polymorphism was observed as a protective factor for cancer in the Asian population (CT+CC vs TT: OR 0.79, 95% CI 0.66-0.95, P = 0.01). CONCLUSIONS DNMT3B polymorphisms might be associated with decreased cancer risk especially in the Asian population and for colorectal cancer. Further multicentric studies are still needed to confirm the results.
Collapse
Affiliation(s)
- Fujiao Duan
- Department of Hospital Infection Management, Affiliated Tumor Hospital of Zhengzhou University, Zhengzhou, Henan, China,
| | | | | | | | | | | |
Collapse
|
9
|
Jaiswal SK, Sukla KK, Kumari N, Lakhotia AR, Kumar A, Rai AK. Maternal risk for down syndrome and polymorphisms in the promoter region of the DNMT3B gene: a case-control study. BIRTH DEFECTS RESEARCH. PART A, CLINICAL AND MOLECULAR TERATOLOGY 2015; 103:299-305. [PMID: 25656965 DOI: 10.1002/bdra.23348] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 11/27/2014] [Accepted: 12/17/2014] [Indexed: 01/09/2023]
Abstract
BACKGROUND Epigenetic changes leading to improper methylation of the pericentromeric region of chromosome 21 may contribute to the nondisjunction of this chromosome. Polymorphisms in the DNA Methyltransferase 3B (DNMT3B) gene, one of the crucial gene of the folate metabolism, affects the activity of the enzyme and increases the susceptibility of nondisjunction in mothers of Down syndrome children (MDS). METHODS Considering this hypothesis we investigated the association of single nucleotide polymorphisms in the promoter region of the DNMT3B gene (rs1569686 -579G>T; rs2424913 -149C>T) with a predisposition of mothers to deliver a Down syndrome (DS) child. The study was performed on DNA samples from 150 MDS and 172 control mothers. Transmission disequilibrium tests were performed on 103 DS trio families. Genotyping was done using a polymerase chain reaction-restriction fragment length polymorphism method. RESULTS With respect to the single nucleotide polymorphisms studied, no significant difference was observed in the genotypes and alleles frequency distributions between MDS and control mothers. The frequency of the DNMT3B-579G allele was, respectively, 0.34 in MDS and 0.33 in control mothers whereas the frequency of the DNMT3B-149C allele was respectively 0.31 in MDS and 0.26 in control mothers. No significant deviation in genotypic combinations as well as in transmission disequilibrium tests analysis was observed. However, a strong linkage disequilibrium was observed with significant differences in the distribution of G-T and G-C haplotypes among case and control mothers. CONCLUSION Although the above studied polymorphisms of DNMT3B may not be an independent risk factor it might be possible that certain allelic combinations (G-T) are. This finding suggests that DNMT3B might be a maternal risk factor for DS in our Indian cohort. Replication studies are required to confirm these findings.
Collapse
Affiliation(s)
- Sushil Kumar Jaiswal
- Center for Genetic Disorders, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | | | | | | | | | | |
Collapse
|
10
|
Coppedè F, Ricciardi R, Denaro M, De Rosa A, Provenzano C, Bartoccioni E, Baggiani A, Lucchi M, Mussi A, Migliore L. Association of the DNMT3B -579G>T polymorphism with risk of thymomas in patients with myasthenia gravis. PLoS One 2013; 8:e80846. [PMID: 24260492 PMCID: PMC3834310 DOI: 10.1371/journal.pone.0080846] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Accepted: 10/12/2013] [Indexed: 01/26/2023] Open
Abstract
Increasing evidence suggests a contribution of epigenetic processes in promoting cancer and autoimmunity. Myasthenia gravis (MG) is an autoimmune disease mediated, in approximately 80% of the patients, by antibodies against the nicotinic acetylcholine receptor (AChR+). Moreover, epithelial tumours (thymomas) are present in about 10-20% of the patients, and there is indication that changes in DNA methylation might contribute to the risk and progression of thymomas. However, the role of epigenetics in MG is still not completely clarified. In the present study we investigated if a common polymorphism (-579G>T: rs1569686) in the promoter of the DNMT3B gene coding for the DNA methyltransferase 3B, an enzyme that mediates DNA methylation, increases the risk to develop MG or MG-associated thymomas. The study polymorphism was selected based on recent reports and a literature meta-analysis suggesting association with increased risk of various types of cancer. We screened 324 AChR+ MG patients (140 males and 184 females, mean age 56.0 ± 16.5 years) and 735 healthy matched controls (294 males and 441 females, mean age 57.3 ± 15.6 years). 94 of the total MG patients had a thymoma. While there was no association with the whole cohort of MG patients, we found a statistically significant association of the DNMT3B-579T allele (OR = 1.51; 95% CI=1.1-2.1, P = 0.01) and the TT homozygous genotype (OR = 2.59; 95% CI=1.4-4.9, P = 0.006) with the risk of thymoma. No association was observed in MG patients without thymoma, even after stratification into clinical subtypes. Present results suggest that the DNMT3B-579T allele might contribute to the risk of developing thymoma in MG patients, particularly in homozygous TT subjects.
Collapse
Affiliation(s)
- Fabio Coppedè
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Roberta Ricciardi
- Division of Neurology, Department of Neuroscience, University of Pisa, Pisa, Italy
- Division of Thoracic Surgery, Cardiac and Thoracic Department, University of Pisa, Pisa, Italy
| | - Maria Denaro
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Anna De Rosa
- Division of Neurology, Department of Neuroscience, University of Pisa, Pisa, Italy
| | - Carlo Provenzano
- Institute of General Pathology, Catholic University of Rome, Rome, Italy
| | | | - Angelo Baggiani
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Marco Lucchi
- Division of Thoracic Surgery, Cardiac and Thoracic Department, University of Pisa, Pisa, Italy
| | - Alfredo Mussi
- Division of Thoracic Surgery, Cardiac and Thoracic Department, University of Pisa, Pisa, Italy
| | - Lucia Migliore
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| |
Collapse
|
11
|
Zheng Q, Zeng TT, Chen J, Liu H, Zhang H, Su J. Association between DNA methyltransferases 3B gene polymorphisms and the susceptibility to acute myeloid leukemia in Chinese Han population. PLoS One 2013; 8:e74626. [PMID: 24069326 PMCID: PMC3775800 DOI: 10.1371/journal.pone.0074626] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Accepted: 08/06/2013] [Indexed: 02/05/2023] Open
Abstract
DNMT3B plays a crucial role in the generation of aberrant methylation during carcinogenesis. Polymorphisms in the DNMT3B gene may influence the DNA methylation enzymatic activity of DNMT3B, thereby modulating the susceptibility to AML. Thus, we investigated the association between SNPs in the DNMT3Bgene and their haplotypes with the risk of AML in the Chinese Han population. The DNMT3B genotype was determined by HRM in 317 de novo AML patients and 406 healthy control subjects matched for age and gender. Among the 5 SNPs investigated in this study, rs2424913 demonstrated no polymorphisms in the Chinese Han populations, rs1569686 and rs2424908 were significantly associated with AML risk. The GG genotype of rs1569686 was associated with increased AML risk (OR: 5.76; 95%CI: 2.60-12.73; P<0.01) compared with the TT genotype, and individuals with a G allele had a significantly increased risk (OR: 1.89; 95%CI: 1.41-2.52; P<0.01) for AML compared with those harboring a C allele, this polymorphism can predict the risk of AML in a minority of patients. While the CC genotype of rs2424908 appeared to reduce the AML risk (OR: 0.57; 95%CI: 0.36-0.91; P=0.01) compared with the TT genotype, individuals with a C allele were associated with a lower risk (OR: 0.79, 95%CI: 0.64-0.97, P=0.03) for developing AML compared with those harboring a T allele. The other 2 SNPs, rs6087990 and rs6119954, had no significant association with AML risk in the study population. The CGGT, CTAT, TGAT, and CGAT haplotypes of rs6087990, rs1569686, rs6119954, and rs2424908 appeared to significantly increase the AML risk, and the TTGC haplotype appeared to significantly reduce the risk. These results suggest that DNMT3B polymorphisms may contribute to the genetic susceptibility to AML; in particular, the G allele of rs1569686 serves as a risk factor for AML, whereas the C allele of rs2424908 represents a potential protective factor.
Collapse
Affiliation(s)
- Qin Zheng
- Department of Laboratory Medicine, West China Hospital of Sichuan University, Chengdu, China
| | - Ting-ting Zeng
- Department of Laboratory Medicine, West China Hospital of Sichuan University, Chengdu, China
| | - Jiao Chen
- Department of Laboratory Medicine, West China Hospital of Sichuan University, Chengdu, China
| | - Hua Liu
- Department of Laboratory Medicine, West China Hospital of Sichuan University, Chengdu, China
| | - He Zhang
- Department of Laboratory Medicine, West China Hospital of Sichuan University, Chengdu, China
| | - Jun Su
- Department of Laboratory Medicine, West China Hospital of Sichuan University, Chengdu, China
| |
Collapse
|