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Bernasocchi T, Mostoslavsky R. Subcellular one carbon metabolism in cancer, aging and epigenetics. FRONTIERS IN EPIGENETICS AND EPIGENOMICS 2024; 2:1451971. [PMID: 39239102 PMCID: PMC11375787 DOI: 10.3389/freae.2024.1451971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 09/07/2024]
Abstract
The crosstalk between metabolism and epigenetics is an emerging field that is gaining importance in different areas such as cancer and aging, where changes in metabolism significantly impacts the cellular epigenome, in turn dictating changes in chromatin as an adaptive mechanism to bring back metabolic homeostasis. A key metabolic pathway influencing an organism's epigenetic state is one-carbon metabolism (OCM), which includes the folate and methionine cycles. Together, these cycles generate S-adenosylmethionine (SAM), the universal methyl donor essential for DNA and histone methylation. SAM serves as the sole methyl group donor for DNA and histone methyltransferases, making it a crucial metabolite for chromatin modifications. In this review, we will discuss how SAM and its byproduct, S-adenosylhomocysteine (SAH), along with the enzymes and cofactors involved in OCM, may function in the different cellular compartments, particularly in the nucleus, to directly regulate the epigenome in aging and cancer.
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Affiliation(s)
- Tiziano Bernasocchi
- The Krantz Family Center for Cancer Research, The Massachusetts General Hospital Cancer Center and Harvard Medical School, Boston, MA, United States
- The Broad Institute of Harvard and MIT, Cambridge, MA, United States
| | - Raul Mostoslavsky
- The Krantz Family Center for Cancer Research, The Massachusetts General Hospital Cancer Center and Harvard Medical School, Boston, MA, United States
- The Broad Institute of Harvard and MIT, Cambridge, MA, United States
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2
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Gálvez-Navas JM, Molina-Montes E, Rodríguez-Barranco M, Ramírez-Tortosa MC, Gil Á, Sánchez MJ. Molecular Mechanisms Linking Genes and Vitamins of the Complex B Related to One-Carbon Metabolism in Breast Cancer: An In Silico Functional Database Study. Int J Mol Sci 2024; 25:8175. [PMID: 39125744 PMCID: PMC11311893 DOI: 10.3390/ijms25158175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Revised: 07/15/2024] [Accepted: 07/23/2024] [Indexed: 08/12/2024] Open
Abstract
Carcinogenesis is closely related to the expression, maintenance, and stability of DNA. These processes are regulated by one-carbon metabolism (1CM), which involves several vitamins of the complex B (folate, B2, B6, and B12), whereas alcohol disrupts the cycle due to the inhibition of folate activity. The relationship between nutrients related to 1CM (all aforementioned vitamins and alcohol) in breast cancer has been reviewed. The interplay of genes related to 1CM was also analyzed. Single nucleotide polymorphisms located in those genes were selected by considering the minor allele frequency in the Caucasian population and the linkage disequilibrium. These genes were used to perform several in silico functional analyses (considering corrected p-values < 0.05 as statistically significant) using various tools (FUMA, ShinyGO, and REVIGO) and databases such as the Kyoto Encyclopedia of Genes and Genomes (KEGG) and GeneOntology (GO). The results of this study showed that intake of 1CM-related B-complex vitamins is key to preventing breast cancer development and survival. Also, the genes involved in 1CM are overexpressed in mammary breast tissue and participate in a wide variety of biological phenomena related to cancer. Moreover, these genes are involved in alterations that give rise to several types of neoplasms, including breast cancer. Thus, this study supports the role of one-carbon metabolism B-complex vitamins and genes in breast cancer; the interaction between both should be addressed in future studies.
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Affiliation(s)
- José María Gálvez-Navas
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), 28029 Madrid, Spain; (J.M.G.-N.); (M.-J.S.)
- Cancer Registry of Granada, Andalusian School of Public Health, Campus Universitario de Cartuja, Cuesta del Observatorio 4, 18011 Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Av. de Madrid, 18012 Granada, Spain;
- Ph.D. Program in Nutrition and Food Sciences, International Postgraduate School, University of Granada, Av. de Madrid 13, 18012 Granada, Spain
| | - Esther Molina-Montes
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), 28029 Madrid, Spain; (J.M.G.-N.); (M.-J.S.)
- Instituto de Investigación Biosanitaria ibs. GRANADA, Av. de Madrid, 18012 Granada, Spain;
- Department of Nutrition and Food Sciences, Faculty of Pharmacy, University of Granada, Campus Universitario de Cartuja, 18011 Granada, Spain
| | - Miguel Rodríguez-Barranco
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), 28029 Madrid, Spain; (J.M.G.-N.); (M.-J.S.)
- Cancer Registry of Granada, Andalusian School of Public Health, Campus Universitario de Cartuja, Cuesta del Observatorio 4, 18011 Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Av. de Madrid, 18012 Granada, Spain;
| | - MCarmen Ramírez-Tortosa
- Department of Biochemistry and Molecular Biology II, Faculty of Pharmacy, University of Granada, Campus Universitario de Cartuja, 18011 Granada, Spain;
| | - Ángel Gil
- Instituto de Investigación Biosanitaria ibs. GRANADA, Av. de Madrid, 18012 Granada, Spain;
- Department of Biochemistry and Molecular Biology II, Faculty of Pharmacy, University of Granada, Campus Universitario de Cartuja, 18011 Granada, Spain;
- Centro de Investigación Biomédica en Red de la Fisiopatología de la Obesidad y Nutrición (CIBEROBN), 28029 Madrid, Spain
| | - María-José Sánchez
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), 28029 Madrid, Spain; (J.M.G.-N.); (M.-J.S.)
- Cancer Registry of Granada, Andalusian School of Public Health, Campus Universitario de Cartuja, Cuesta del Observatorio 4, 18011 Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Av. de Madrid, 18012 Granada, Spain;
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Schmidt RJ, Goodrich AJ, Delwiche L, Hansen RL, Simpson CL, Tancredi D, Volk HE. Newborn Dried Blood Spot Folate in Relation to Maternal Self-reported Folic Acid Intake, Autism Spectrum Disorder, and Developmental Delay. Epidemiology 2024; 35:527-541. [PMID: 38912713 DOI: 10.1097/ede.0000000000001750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/25/2024]
Abstract
BACKGROUND Maternal folic acid intake has been associated with decreased risk for neurodevelopmental disorders including autism spectrum disorder (ASD). Genetic differences in folate metabolism could explain some inconsistencies. To our knowledge, newborn folate concentrations remain unexamined. METHODS We measured folate in archived newborn dried blood spots of children from the CHARGE (Childhood Autism Risks from Genetics and the Environment) case-control study who were clinically confirmed at 24-60 months to have ASD (n = 380), developmental delay (n = 128), or typical development (n = 247). We quantified monthly folic acid intake from maternally-reported supplements and cereals consumed during pregnancy and 3 months prior. We assessed associations of newborn folate with maternal folic acid intake and with ASD or developmental delay using regression. We stratified estimates across maternal and child MTHFR genotypes. RESULTS Among typically developing children, maternal folic acid intake in prepregnancy and each pregnancy month and prepregnancy prenatal vitamin intake were positively associated with newborn folate. Among children with ASD, prenatal vitamin intake in pregnancy months 2-9 was positively associated with newborn folate. Among children with developmental delay, maternal folic acid and prenatal vitamins during the first pregnancy month were positively associated with neonatal folate. Associations differed by MTHFR genotype. Overall, neonatal folate was not associated with ASD or developmental delay, though we observed associations with ASD in children with the MTHFR 677 TT genotype (odds ratio: 1.76, 95% CI = 1.19, 2.62; P for interaction = 0.08). CONCLUSION Maternal prenatal folic acid intake was associated with neonatal folate at different times across neurodevelopmental groups. Neonatal folate was not associated with reduced ASD risk. MTHFR genotypes modulated these relationships.
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Affiliation(s)
- Rebecca J Schmidt
- From the Department of Public Health Sciences, School of Medicine, University of California Davis, Sacramento, CA
- Medical Investigation of Neurodevelopmental Disorders (MIND) Institute, University of California Davis, Sacramento, CA
| | - Amanda J Goodrich
- From the Department of Public Health Sciences, School of Medicine, University of California Davis, Sacramento, CA
| | - Lora Delwiche
- From the Department of Public Health Sciences, School of Medicine, University of California Davis, Sacramento, CA
| | - Robin L Hansen
- Medical Investigation of Neurodevelopmental Disorders (MIND) Institute, University of California Davis, Sacramento, CA
- Department of Pediatrics, School of Medicine, University of California Davis, Sacramento, CA
| | - Claire L Simpson
- Department of Genetics, Genomics and Informatics, University of Tennessee Health Science Center, Memphis, TN
| | - Daniel Tancredi
- Department of Pediatrics, School of Medicine, University of California Davis, Sacramento, CA
| | - Heather E Volk
- Departments of Mental Health and Environmental Health and Engineering, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD
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Diakite B, Kassogue Y, Maiga M, Dolo G, Kassogue O, Holl JL, Joyce B, Wang J, Cisse K, Diarra F, Keita ML, Traore CB, Kamate B, Sissoko SB, Coulibaly B, Sissoko AS, Traore D, Sidibe FM, Bah S, Teguete I, Ly M, Nadifi S, Dehbi H, Kim K, Murphy R, Hou L. Lack of Association of C677T Methylenetetrahydrofolate Reductase Polymorphism with Breast Cancer Risk in Mali. Genet Res (Camb) 2023; 2023:4683831. [PMID: 36721432 PMCID: PMC9873441 DOI: 10.1155/2023/4683831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 12/22/2022] [Accepted: 01/06/2023] [Indexed: 01/19/2023] Open
Abstract
Methylenetetrahydrofolate reductase (MTHFR) plays a major role in the metabolism of folates and homocysteine, which in turn can affect gene expression and ultimately promote the development of breast cancer. Thus, mutations in the MTHFR gene could influence homocysteine, methionine, and S-adenosylmethionine levels and, indirectly, nucleotide levels. Imbalance in methionine and S-adenosylmethionine synthesis affects protein synthesis and methylation. These changes, which affect gene expression, may ultimately promote the development of breast cancer. We therefore hypothesized that such mutations could also play an important role in the occurrence and pathogenesis of breast cancer in a Malian population. In this study, we used the PCR-RFLP technique to identify the different genotypic profiles of the C677T MTHFR polymorphism in 127 breast cancer women and 160 healthy controls. The genotypic distribution of the C677T polymorphism in breast cancer cases was 88.2% for CC, 11.0% for CT, and 0.8% for TT. Healthy controls showed a similar distribution with 90.6% for CC, 8.8% for CT, and 0.6% for TT. We found no statistical association between the C677T polymorphism and breast cancer risk for the codominant models CT and TT (p > 0.05). The same trend was observed when the analysis was extended to other genetic models, including dominant (p = 0.50), recessive (p = 0.87), and additive (p = 0.50) models. The C677T polymorphism of MTHFR gene did not influence the risk of breast cancer in the Malian samples.
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Affiliation(s)
- Brehima Diakite
- Faculty of Medicine and Odontostomatology, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Yaya Kassogue
- Faculty of Medicine and Odontostomatology, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Mamoudou Maiga
- Faculty of Medicine and Odontostomatology, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
- Institute for Global Health, Northwestern University, Chicago, IL 60611, USA
- Preventive Medicine Department, Northwestern University, Chicago, IL 60611, USA
| | - Guimogo Dolo
- Faculty of Medicine and Odontostomatology, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Oumar Kassogue
- Faculty of Medicine and Odontostomatology, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Jane L Holl
- Department of Neurology, University of Chicago, Chicago, IL 60637, USA
| | - Brian Joyce
- Institute for Global Health, Northwestern University, Chicago, IL 60611, USA
- Preventive Medicine Department, Northwestern University, Chicago, IL 60611, USA
| | - Jun Wang
- Preventive Medicine Department, Northwestern University, Chicago, IL 60611, USA
- Department of Neurology, University of Chicago, Chicago, IL 60637, USA
| | - Kadidiatou Cisse
- Faculty of Medicine and Odontostomatology, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Fousseyni Diarra
- Faculty of Medicine and Odontostomatology, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Mamadou L Keita
- Faculty of Medicine and Odontostomatology, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Cheick B Traore
- Faculty of Medicine and Odontostomatology, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Bakarou Kamate
- Faculty of Medicine and Odontostomatology, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Sidi B Sissoko
- Faculty of Medicine and Odontostomatology, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Bourama Coulibaly
- Faculty of Medicine and Odontostomatology, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Adama S Sissoko
- Faculty of Medicine and Odontostomatology, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Drissa Traore
- Faculty of Medicine and Odontostomatology, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Fatoumata M Sidibe
- Faculty of Medicine and Odontostomatology, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Sekou Bah
- Faculty of Pharmacy, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Ibrahim Teguete
- Faculty of Medicine and Odontostomatology, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | - Madani Ly
- Faculty of Medicine and Odontostomatology, University of Sciences, Techniques and Technologies of Bamako (USTTB), Bamako, Mali
| | | | - Hind Dehbi
- Hassan II University Aïn Chock, Casablanca, Morocco
| | - Kyeezu Kim
- Institute for Global Health, Northwestern University, Chicago, IL 60611, USA
- Preventive Medicine Department, Northwestern University, Chicago, IL 60611, USA
| | - Robert Murphy
- Institute for Global Health, Northwestern University, Chicago, IL 60611, USA
| | - Lifang Hou
- Institute for Global Health, Northwestern University, Chicago, IL 60611, USA
- Preventive Medicine Department, Northwestern University, Chicago, IL 60611, USA
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Coleman MF, O’Flanagan CH, Pfeil AJ, Chen X, Pearce JB, Sumner S, Krupenko SA, Hursting SD. Metabolic Response of Triple-Negative Breast Cancer to Folate Restriction. Nutrients 2021; 13:nu13051637. [PMID: 34068120 PMCID: PMC8152779 DOI: 10.3390/nu13051637] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/06/2021] [Accepted: 05/10/2021] [Indexed: 12/14/2022] Open
Abstract
Background: Triple-negative breast cancers (TNBCs), accounting for approximately 15% of breast cancers, lack targeted therapy. A hallmark of cancer is metabolic reprogramming, with one-carbon metabolism essential to many processes altered in tumor cells, including nucleotide biosynthesis and antioxidant defenses. We reported that folate deficiency via folic acid (FA) withdrawal in several TNBC cell lines results in heterogenous effects on cell growth, metabolic reprogramming, and mitochondrial impairment. To elucidate underlying drivers of TNBC sensitivity to folate stress, we characterized in vivo and in vitro responses to FA restriction in two TNBC models differing in metastatic potential and innate mitochondrial dysfunction. Methods: Metastatic MDA-MB-231 cells (high mitochondrial dysfunction) and nonmetastatic M-Wnt cells (low mitochondrial dysfunction) were orthotopically injected into mice fed diets with either 2 ppm FA (control), 0 ppm FA, or 12 ppm FA (supplementation; in MDA-MB-231 only). Tumor growth, metabolomics, and metabolic gene expression were assessed. MDA-MB-231 and M-Wnt cells were also grown in media with 0 or 2.2 µM FA; metabolic alterations were assessed by extracellular flux analysis, flow cytometry, and qPCR. Results: Relative to control, dietary FA restriction decreased MDA-MB-231 tumor weight and volume, while FA supplementation minimally increased MDA-MB-231 tumor weight. Metabolic studies in vivo and in vitro using MDA-MB-231 cells showed FA restriction remodeled one-carbon metabolism, nucleotide biosynthesis, and glucose metabolism. In contrast to findings in the MDA-MB-231 model, FA restriction in the M-Wnt model, relative to control, led to accelerated tumor growth, minimal metabolic changes, and modest mitochondrial dysfunction. Increased mitochondrial dysfunction in M-Wnt cells, induced via chloramphenicol, significantly enhanced responsiveness to the cytotoxic effects of FA restriction. Conclusions: Given the lack of targeted treatment options for TNBC, uncovering metabolic vulnerabilities that can be exploited as therapeutic targets is an important goal. Our findings suggest that a major driver of TNBC sensitivity to folate restriction is a high innate level of mitochondrial dysfunction, which can increase dependence on one-carbon metabolism. Thus, folate deprivation or antifolate therapy for TNBCs with metabolic inflexibility due to their elevated levels of mitochondrial dysfunction may represent a novel precision-medicine strategy.
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Affiliation(s)
- Michael F. Coleman
- Department of Nutrition, University of North Carolina, Chapel Hill, NC 27599, USA; (M.F.C.); (C.H.O.); (A.J.P.); (X.C.); (J.B.P.); (S.S.); (S.A.K.)
| | - Ciara H. O’Flanagan
- Department of Nutrition, University of North Carolina, Chapel Hill, NC 27599, USA; (M.F.C.); (C.H.O.); (A.J.P.); (X.C.); (J.B.P.); (S.S.); (S.A.K.)
| | - Alexander J. Pfeil
- Department of Nutrition, University of North Carolina, Chapel Hill, NC 27599, USA; (M.F.C.); (C.H.O.); (A.J.P.); (X.C.); (J.B.P.); (S.S.); (S.A.K.)
| | - Xuewen Chen
- Department of Nutrition, University of North Carolina, Chapel Hill, NC 27599, USA; (M.F.C.); (C.H.O.); (A.J.P.); (X.C.); (J.B.P.); (S.S.); (S.A.K.)
| | - Jane B. Pearce
- Department of Nutrition, University of North Carolina, Chapel Hill, NC 27599, USA; (M.F.C.); (C.H.O.); (A.J.P.); (X.C.); (J.B.P.); (S.S.); (S.A.K.)
| | - Susan Sumner
- Department of Nutrition, University of North Carolina, Chapel Hill, NC 27599, USA; (M.F.C.); (C.H.O.); (A.J.P.); (X.C.); (J.B.P.); (S.S.); (S.A.K.)
- Nutrition Research Institute, University of North Carolina, Kannapolis, NC 28081, USA
| | - Sergey A. Krupenko
- Department of Nutrition, University of North Carolina, Chapel Hill, NC 27599, USA; (M.F.C.); (C.H.O.); (A.J.P.); (X.C.); (J.B.P.); (S.S.); (S.A.K.)
- Nutrition Research Institute, University of North Carolina, Kannapolis, NC 28081, USA
| | - Stephen D. Hursting
- Department of Nutrition, University of North Carolina, Chapel Hill, NC 27599, USA; (M.F.C.); (C.H.O.); (A.J.P.); (X.C.); (J.B.P.); (S.S.); (S.A.K.)
- Nutrition Research Institute, University of North Carolina, Kannapolis, NC 28081, USA
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA
- Correspondence:
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Goh WJ, Tan SX, Pastorin G, Ho PCL, Hu J, Lim SH. 3D printing of four-in-one oral polypill with multiple release profiles for personalized delivery of caffeine and vitamin B analogues. Int J Pharm 2021; 598:120360. [PMID: 33548364 DOI: 10.1016/j.ijpharm.2021.120360] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 01/22/2021] [Accepted: 02/01/2021] [Indexed: 02/06/2023]
Abstract
Personalized supplementation has found recent momentum with an estimated global market size of USD 1.6 billion in 2019 and an expected CAGR of 8.5% between 2020 and 2028. Alongside this rising trend, a simple, accurate, inexpensive and flexible method to produce personalized dosage forms of a wide variety of supplements would be beneficial to both the industry players and individual consumers. Here, we present a 3D printing method to fabricate a four-in-one oral polypill with multiple release profiles for personalized delivery of caffeine and vitamin B analogues. The 3D printable formulations were fabricated and optimized from existing FDA GRAS excipients based on their viscosity, shear thinning properties, recovery of paste and mechanical strength. In the polypill, vitamin B analogues and caffeine were used as the model dietary ingredients. We performed a standard 2 stage USP in vitro dissolution test of the polypill, and demonstrated that vitamin B1, B3 and B6 could be immediately released within 30 min, while caffeine could be slowly released over a period of 4 h. This demonstrated the ability dietary supplement containing different ingredients with varying release profiles, all within a single polypill. Throughout the formulation and 3D printing process, there were no detectable changes to the dietary ingredients nor any interactions with the excipients. This method serves as an intriguing complement to traditional manufacturing of oral tablets, especially when flexibility in design, dose, volume and release profiles of each dietary ingredient is required, as exemplified in personalized supplementation.
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Affiliation(s)
- Wei Jiang Goh
- NUS Graduate School for Integrative Sciences and Engineering, University Hall, Tan Chin Tuan Wing Level 04, #04-02, 21 Lower Kent Ridge Road, Singapore 119077, Singapore; Craft Health Pte Ltd., 21 Bukit Batok Crescent, #10-75, WCEGA Tower, Singapore 658065, Singapore; Department of Pharmacy, Faculty of Science, National University of Singapore, Block S4A, Level 3, 18 Science Drive 4, Singapore 117543, Singapore
| | - Si Xuan Tan
- Craft Health Pte Ltd., 21 Bukit Batok Crescent, #10-75, WCEGA Tower, Singapore 658065, Singapore
| | - Giorgia Pastorin
- Department of Pharmacy, Faculty of Science, National University of Singapore, Block S4A, Level 3, 18 Science Drive 4, Singapore 117543, Singapore
| | - Paul Chi Lui Ho
- Department of Pharmacy, Faculty of Science, National University of Singapore, Block S4A, Level 3, 18 Science Drive 4, Singapore 117543, Singapore
| | - Jun Hu
- Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research, 1 Pesek Road, Jurong Island, Singapore 627833, Singapore
| | - Seng Han Lim
- Craft Health Pte Ltd., 21 Bukit Batok Crescent, #10-75, WCEGA Tower, Singapore 658065, Singapore; Department of Pharmacy, Faculty of Science, National University of Singapore, Block S4A, Level 3, 18 Science Drive 4, Singapore 117543, Singapore.
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Associations of one-carbon metabolism-related gene polymorphisms with breast cancer risk are modulated by diet, being higher when adherence to the Mediterranean dietary pattern is low. Breast Cancer Res Treat 2021; 187:793-804. [PMID: 33599865 DOI: 10.1007/s10549-021-06108-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 01/19/2021] [Indexed: 12/15/2022]
Abstract
PURPOSE Breast cancer is more likely attributed to a combination of genetic variations and lifestyle factors. Both one-carbon metabolism and diet-related factors could interfere with the carcinogenesis of breast cancer (BC), but whether diet consumed underlie a specific metabolism pathway could influence the impact of genetic variants on breast cancer risk remains equivocal. METHODS A case-control study of the Chinese female population (818 cases, 935 controls). 13 SNPs in eight one-carbon metabolism-related genes (MTHFD1, TYMS, MTRR, MAT2B, CDO1, FOLR1, UNG2, ADA) were performed. Diet was assessed by a validated food-frequency questionnaire. We examined the associations of the adherence to the Mediterranean dietary pattern (MDP) and single-nucleotide polymorphisms (SNPs) of one-carbon metabolism with breast cancer risk. We constructed an aggregate polygenic risk score (PRS) to test the additive effects of genetic variants and analyzed the gene-diet interactions. RESULTS High adherence (highest quartile) to the MDP decreased the risk of breast cancer among post- but not premenopausal women, respectively (OR = 0.54, 95% CI = 0.38 to 0.78 and 0.90, 0.53 to 1.53). Neither of the polymorphisms or haplotypes was associated with breast cancer risk, irrespective of menopause. However, a high PRS (highest quartile) was associated with more than a doubling risk in both post- and premenopausal women, respectively (OR = 1.95, 95% CI = 1.32 to 2.87 and 2.09, 1.54 to 2.85). We found a gene-diet interaction with adherence to the MDP for aggregate PRS (P-interaction = 0.000) among postmenopausal women. When adherence to the MDP was low (< median), carries with high PRS (highest quartile) had higher BC risk (OR = 2.80, 95% CI = 1.55 to 5.07) than low PRS (lowest quartile), while adherence to the MDP was high (≥ median), the association disappeared (OR = 1.57, 95% CI = 0.92 to 2.66). CONCLUSION High adherence to the MDP may counteract the genetic predisposition associated with one-carbon metabolism on breast cancer risk in postmenopausal women.
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8
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Jung SY, Papp JC, Sobel EM, Pellegrini M, Yu H, Zhang ZF. Pro-inflammatory cytokine polymorphisms and interactions with dietary alcohol and estrogen, risk factors for invasive breast cancer using a post genome-wide analysis for gene-gene and gene-lifestyle interaction. Sci Rep 2021; 11:1058. [PMID: 33441805 PMCID: PMC7807068 DOI: 10.1038/s41598-020-80197-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 12/17/2020] [Indexed: 11/13/2022] Open
Abstract
Molecular and genetic immune-related pathways connected to breast cancer and lifestyles in postmenopausal women are not fully characterized. In this study, we explored the role of pro-inflammatory cytokines such as C-reactive protein (CRP) and interleukin-6 (IL-6) in those pathways at the genome-wide level. With single-nucleotide polymorphisms (SNPs) in the biomarkers and lifestyles together, we further constructed risk profiles to improve predictability for breast cancer. Our earlier genome-wide association gene-environment interaction study used large cohort data from the Women's Health Initiative Database for Genotypes and Phenotypes Study and identified 88 SNPs associated with CRP and IL-6. For this study, we added an additional 68 SNPs from previous GWA studies, and together with 48 selected lifestyles, evaluated for the association with breast cancer risk via a 2-stage multimodal random survival forest and generalized multifactor dimensionality reduction methods. Overall and in obesity strata (by body mass index, waist, waist-to-hip ratio, exercise, and dietary fat intake), we identified the most predictive genetic and lifestyle variables. Two SNPs (SALL1 rs10521222 and HLA-DQA1 rs9271608) and lifestyles, including alcohol intake, lifetime cumulative exposure to estrogen, and overall and visceral obesity, are the most common and strongest predictive markers for breast cancer across the analyses. The risk profile that combined those variables presented their synergistic effect on the increased breast cancer risk in a gene-lifestyle dose-dependent manner. Our study may contribute to improved predictability for breast cancer and suggest potential interventions for the women with the risk genotypes and lifestyles to reduce their breast cancer risk.
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Affiliation(s)
- Su Yon Jung
- Translational Sciences Section, Jonsson Comprehensive Cancer Center, School of Nursing, University of California, Los Angeles, 700 Tiverton Ave, 3-264 Factor Building, Los Angeles, CA, 90095, USA.
| | - Jeanette C Papp
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Eric M Sobel
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Department of Computational Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Matteo Pellegrini
- Department of Molecular, Cell and Developmental Biology, Life Sciences Division, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Herbert Yu
- Cancer Epidemiology Program, University of Hawaii Cancer Center, Honolulu, HI, 96813, USA
| | - Zuo-Feng Zhang
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Center for Human Nutrition, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, 90095, USA
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9
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Antioxidant vitamins and genetic polymorphisms in breast cancer. Cancer 2021. [DOI: 10.1016/b978-0-12-819547-5.00047-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Sambyal V, Lal H, Sharma B, Guleria K, Singh N, Uppal M, Manjari M, Sudan M. Association of MTHFR 677C>T polymorphism with breast cancer risk: A case–control study and meta-analysis. J Cancer Res Ther 2021; 18:1451-1460. [DOI: 10.4103/jcrt.jcrt_1063_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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11
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Sellami M, Bragazzi NL. Nutrigenomics and Breast Cancer: State-of-Art, Future Perspectives and Insights for Prevention. Nutrients 2020; 12:nu12020512. [PMID: 32085420 PMCID: PMC7071273 DOI: 10.3390/nu12020512] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 02/13/2020] [Accepted: 02/14/2020] [Indexed: 02/06/2023] Open
Abstract
Proper nutrition plays a major role in preventing diseases and, therefore, nutritional interventions constitute crucial strategies in the field of Public Health. Nutrigenomics and nutriproteomics are arising from the integration of nutritional, genomics and proteomics specialties in the era of postgenomics medicine. In particular, nutrigenomics and nutriproteomics focus on the interaction between nutrients and the human genome and proteome, respectively, providing insights into the role of diet in carcinogenesis. Further omics disciplines, like metabonomics, interactomics and microbiomics, are expected to provide a better understanding of nutrition and its underlying factors. These fields represent an unprecedented opportunity for the development of personalized diets in women at risk of developing breast cancer.
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Affiliation(s)
- Maha Sellami
- Sport Science Program (SSP), College of Arts and Sciences (CAS), Qatar University, Doha 2713, Qatar
- Correspondence: (M.S.); (N.L.B.)
| | - Nicola Luigi Bragazzi
- Postgraduate School of Public Health, Department of Health Sciences (DISSAL), University if Genoa, 16132 Genoa, Italy
- Laboratory for Industrial and Applied Mathematics (LIAM), Department of Mathematics and Statistics, York University, Toronto, ON M3J 1P3, Canada
- Correspondence: (M.S.); (N.L.B.)
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12
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Abstract
Epigenetic modifications play an important role in disease pathogenesis and therefore are a focus of intense investigation. Epigenetic changes include DNA, RNA, and histone modifications along with expression of non-coding RNAs. Various factors such as environment, diet, and lifestyle can influence the epigenome. Dietary nutrients like vitamins can regulate both physiological and pathological processes through their direct impact on epigenome. Vitamin A acts as a major regulator of above-mentioned epigenetic mechanisms. B group vitamins including biotin, niacin, and pantothenic acid also participate in modulation of various epigenome. Further, vitamin C has shown to modulate both DNA methylation and histone modifications while few reports have also supported its role in miRNA-mediated pathways. Similarly, vitamin D also influences various epigenetic modifications of both DNA and histone by controlling the regulatory mechanisms. Despite the information that vitamins can modulate the epigenome, the detailed mechanisms of vitamin-mediated epigenetic regulations have not been explored fully and hence further detailed studies are required to decipher their role at epigenome level in both normal and disease pathogenesis. The current review summarizes the available literature on the role of vitamins as epigenetic modifier and highlights the key evidences for developing vitamins as potential epidrugs.
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Affiliation(s)
- Suza Mohammad Nur
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Suvasmita Rath
- Department of Dermatology, School of Medicine and Public Health, University of Wisconsin, Madison, Madison, WI, USA
| | - Varish Ahmad
- Health Information Technology Department, Faculty of Applied Studies, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Abrar Ahmad
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Bushra Ateeq
- Molecular Oncology Lab, Department of Biological Sciences and Bioengineering, Indian Institute of Technology-Kanpur (IIT K), Kanpur, India
| | - Mohammad Imran Khan
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia.,Cancer Metabolism and Epigenetic Unit, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
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13
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Meneses-Sanchez P, Garcia-Hernandez SC, Porchia LM, Pérez-Fuentes R, Torres-Rasgado E, Del Angel Soto A, Gonzalez-Mejia ME. C677T and A1298C methylenetetrahydrofolate reductase polymorphisms and breast cancer susceptibility among Latinos: a meta-analysis. Breast Cancer 2019; 26:602-611. [PMID: 30877449 DOI: 10.1007/s12282-019-00961-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 03/11/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Previous meta-analyses have shown an ethnic dependency of the C677T and the A1298C methylenetetrahydrofolate reductase (MTHFR) polymorphisms, with no focus on the Latino population. For Latinos, many studies have examined these polymorphisms and breast cancer susceptibility, yielding no concise result. Therefore, we undertook this meta-analysis to determine the effect these polymorphisms have on breast cancer risk for Latinos. METHODS PubMed, EBSCO, LILACS, Scopus, and Latin American-specific databases were searched for studies exploring the association between the MTHFR polymorphisms and breast cancer susceptibility in Latinos until January 2019. Genotype distributions were extracted and, depending on the level heterogeneity determined by the ψ2-based Q test and the I2 test, fixed-effects or random-effects models were used to calculate pooled odds ratios (ORs) with 95% confidence intervals (95% CIs) for the heterozygous, homozygous, dominant, recessive, and allelic genetic models. No publication bias was detected by the Begg-Mazumdar's test and Egger's test. RESULTS Of the 280 retrieved publications, 9 studies were included: 9 for the C677T polymorphism and 5 for the A1298C polymorphism. For the C677T polymorphism, there was an elevated risk for the homozygous (OR 1.42, 95% CI 1.05-1.92), the dominant (OR 1.16, 95% CI 1.02-1.31), the recessive (OR 1.33, 95% CI 1.01-1.75), and the allelic model (OR 1.17, 95% CI 1.03-1.33, p < 0.01). No association between the A1298C polymorphism and the risk to develop breast cancer was determined. CONCLUSION The results indicated that, for Latinos, the C677T polymorphism is associated with a significant risk for developing breast cancer, whereas the A1289C polymorphism does not.
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Affiliation(s)
- Perla Meneses-Sanchez
- Departamento de Genética, Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, 13 Sur 2901 Col. Volcanes, C.P. 72420, Puebla, Pue, Mexico
| | - Samantha C Garcia-Hernandez
- Departamento de Genética, Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, 13 Sur 2901 Col. Volcanes, C.P. 72420, Puebla, Pue, Mexico
| | - Leonardo M Porchia
- Laboratorio de Investigación en Fisiopatología de Enfermedades Crónicas, Centro de Investigación Biomédica de Oriente, IMSS, Km 4.5 Carretera Federal Atlixco-Metepec, C.P. 42730, Atlixco, Puebla, Mexico
| | - Ricardo Pérez-Fuentes
- Laboratorio de Investigación en Fisiopatología de Enfermedades Crónicas, Centro de Investigación Biomédica de Oriente, IMSS, Km 4.5 Carretera Federal Atlixco-Metepec, C.P. 42730, Atlixco, Puebla, Mexico.,Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, 13 Sur 2901 Col. Volcanes, C.P. 72420, Puebla, Pue, Mexico
| | - Enrique Torres-Rasgado
- Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, 13 Sur 2901 Col. Volcanes, C.P. 72420, Puebla, Pue, Mexico
| | - Alejandra Del Angel Soto
- Departamento de Genética, Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, 13 Sur 2901 Col. Volcanes, C.P. 72420, Puebla, Pue, Mexico
| | - M Elba Gonzalez-Mejia
- Departamento de Genética, Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, 13 Sur 2901 Col. Volcanes, C.P. 72420, Puebla, Pue, Mexico.
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14
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Blumberg JB, Bailey RL, Sesso HD, Ulrich CM. The Evolving Role of Multivitamin/Multimineral Supplement Use among Adults in the Age of Personalized Nutrition. Nutrients 2018; 10:nu10020248. [PMID: 29470410 PMCID: PMC5852824 DOI: 10.3390/nu10020248] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 02/08/2018] [Accepted: 02/19/2018] [Indexed: 12/31/2022] Open
Abstract
Micronutrient deficiencies occur in segments of the adult population in the United States. Multivitamin/multimineral supplements (MVMS) are widely used by this population, which reduces inadequacies in micronutrient intake, but the potential for exceeding tolerable upper intake levels in others should be considered. There are concerns associated with the excessive intake of certain nutrients, particularly folic acid, and potential untoward consequences. The advent of nutrigenomics and the enhanced ability to directly study the interactions between nutrition and genetic variants and expression will allow for the conduct of more targeted studies with specific endpoints and may ultimately lead to progress in the field of personalized nutrition. The role of MVMS in health maintenance and chronic disease prevention remains controversial. Conducting studies in this area has been hampered by, among other factors, inconsistent definitions of MVMS, ranging from as few as three vitamins to broad-spectrum products containing more than two dozen vitamins and minerals. Results from some observational studies and large-scale, randomized, controlled trials suggest that MVMS may reduce the risk of some forms of cancer and, potentially, cardiovascular disease. The ongoing COcoa Supplement and Multivitamin Outcomes Study (COSMOS) is expected to build on this research and provide additional insights into these areas.
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Affiliation(s)
- Jeffrey B Blumberg
- Friedman School of Nutrition Science and Policy, Tufts University, 711 Washington Street, Boston, MA 02111, USA.
| | - Regan L Bailey
- Department of Nutrition Science, Purdue University, 700 West State Street, West Lafayette, IN 47907, USA.
| | - Howard D Sesso
- Brigham and Women's Hospital and Harvard Medical School, 900 Commonwealth Avenue East, 3rd Floor, Boston, MA 02215, USA.
| | - Cornelia M Ulrich
- Huntsman Cancer Institute and Department of Population Health Sciences, University of Utah, 2000 Circle of Hope, Salt Lake City, UT 84112, USA.
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15
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Correlation between global methylation level of peripheral blood leukocytes and serum C reactive protein level modified by MTHFR polymorphism: a cross-sectional study. BMC Cancer 2018; 18:184. [PMID: 29439678 PMCID: PMC5812223 DOI: 10.1186/s12885-018-4089-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 02/05/2018] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Chronic inflammatory conditions are associated with higher tumor incidence through epigenetic and genetic alterations. Here, we focused on an association between an inflammation marker, C-reactive-protein (CRP), and global DNA methylation levels of peripheral blood leukocytes. METHODS The subjects were 384 healthy Japanese women enrolled as the control group of a case-control study for breast cancer conducted from 2001 to 2005. Global DNA methylation was quantified by Luminometric Methylation Assay (LUMA). RESULTS With adjustment for lifestyle-related factors, including folate intake, the global DNA methylation level of peripheral blood leukocytes was significantly but weakly increased by 0.43% per quartile category for CRP (P for trend = 0.010). Estimated methylation levels stratified by CRP quartile were 70.0%, 70.8%, 71.4%, and 71.3%, respectively. In addition, interaction between polymorphism of MTHFR (rs1801133, known as C677T) and CRP was significant (P for interaction = 0.046); the global methylation level was significantly increased by 0.61% per quartile category for CRP in the CT/TT group (those with the minor allele T, P for trend = 0.001), whereas no association was observed in the CC group (wild type). CONCLUSIONS Our study suggests that CRP concentration is weakly associated with global DNA methylation level. However, this association was observed more clearly in individuals with the minor allele of the MTHFR missense SNP rs1801133. By elucidating the complex mechanism of the regulation of DNA methylation by both acquired and genetic factors, our results may be important for cancer prevention.
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16
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Rezaei H, Rassi H, Mansur FN. Investigation of Methylenetetrahydrofolate Reductase C677T Polymorphism and Human Papilloma Virus Genotypes in Iranian Breast Cancer. Monoclon Antib Immunodiagn Immunother 2017; 36:124-128. [PMID: 28537481 DOI: 10.1089/mab.2017.0011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Breast cancer (BC) is the leading cause of death among Iranian women. Development of BC is a multistep process, arising from genetic changes such as methylenetetrahydrofolate reductase (MTHFR) polymorphism and infection with human papillomavirus (HPV). In this study, we investigated HPV genotypes associated with BCs and its relation with MTHFR C677T polymorphism for early detection of familial BCs. A total of 84 archival BC samples from Iran were collected. Verification of each cancer reported in a relative was sought through the pathology reports of the hospital records. Then, DNA was extracted from all samples by standard methods and HPV genotypes and MTHFR C677T polymorphism genotypes were analyzed using multiplex polymerase chain reaction (PCR) and amplification-refractory mutation system (ARMS)-PCR. Finally, data analysis was performed using version 7 of the Epi Info™ 2012 software and test chi-square (x2) for trend. The frequencies of the CC, TC, and TT genotypes of MTHFR (C677T) were 0.53, 0.38, and 0.09 in familial BC patients, and 0.46, 0.51, and 0.03, respectively, in nonfamilial BC patients. Furthermore, HPV DNA typing identified 29 infections and C677T TT genotype was significantly associated with an increased risk of familial BC in the study population. Our results demonstrate that infection with HPV was prevalent among Iranian women with familial BC. Finally, the testing of C677T GG genotype in combination with HPV genotyping as molecular markers can be helpful in the early diagnosis of Iranian familial BCs by PCR.
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Affiliation(s)
- Hanieh Rezaei
- 1 Department of Microbiology, Faculty of Advanced Science and Technology, Pharmaceutical Science Branch, Islamic Azad University , Tehran, Iran
| | - Hossein Rassi
- 2 Department of Biology, Collage of Basic Science, Karaj Branch, Islamic Azad University , Alborz, Iran
| | - Fahimeh Nemati Mansur
- 3 Department of Biotechnology, Faculty of Advanced Science and Technology, Pharmaceutical Science Branch, Islamic Azad University , Tehran, Iran
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17
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Matejcic M, de Batlle J, Ricci C, Biessy C, Perrier F, Huybrechts I, Weiderpass E, Boutron-Ruault MC, Cadeau C, His M, Cox DG, Boeing H, Fortner RT, Kaaks R, Lagiou P, Trichopoulou A, Benetou V, Tumino R, Panico S, Sieri S, Palli D, Ricceri F, Bueno-de-Mesquita HBA, Skeie G, Amiano P, Sánchez MJ, Chirlaque MD, Barricarte A, Quirós JR, Buckland G, van Gils CH, Peeters PH, Key TJ, Riboli E, Gylling B, Zeleniuch-Jacquotte A, Gunter MJ, Romieu I, Chajès V. Biomarkers of folate and vitamin B12 and breast cancer risk: report from the EPIC cohort. Int J Cancer 2017; 140:1246-1259. [PMID: 27905104 DOI: 10.1002/ijc.30536] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 10/18/2016] [Indexed: 01/13/2023]
Abstract
Epidemiological studies have reported inconsistent findings for the association between B vitamins and breast cancer (BC) risk. We investigated the relationship between biomarkers of folate and vitamin B12 and the risk of BC in the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort. Plasma concentrations of folate and vitamin B12 were determined in 2,491 BC cases individually matched to 2,521 controls among women who provided baseline blood samples. Multivariable logistic regression models were used to estimate odds ratios by quartiles of either plasma B vitamin. Subgroup analyses by menopausal status, hormone receptor status of breast tumors (estrogen receptor [ER], progesterone receptor [PR] and human epidermal growth factor receptor 2 [HER2]), alcohol intake and MTHFR polymorphisms (677C > T and 1298A > C) were also performed. Plasma levels of folate and vitamin B12 were not significantly associated with the overall risk of BC or by hormone receptor status. A marginally positive association was found between vitamin B12 status and BC risk in women consuming above the median level of alcohol (ORQ4-Q1 = 1.26; 95% CI 1.00-1.58; Ptrend = 0.05). Vitamin B12 status was also positively associated with BC risk in women with plasma folate levels below the median value (ORQ4-Q1 = 1.29; 95% CI 1.02-1.62; Ptrend = 0.03). Overall, folate and vitamin B12 status was not clearly associated with BC risk in this prospective cohort study. However, potential interactions between vitamin B12 and alcohol or folate on the risk of BC deserve further investigation.
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Affiliation(s)
- M Matejcic
- International Agency for Research on Cancer, Lyon, France
| | - J de Batlle
- International Agency for Research on Cancer, Lyon, France
| | - C Ricci
- International Agency for Research on Cancer, Lyon, France
| | - C Biessy
- International Agency for Research on Cancer, Lyon, France
| | - F Perrier
- International Agency for Research on Cancer, Lyon, France
| | - I Huybrechts
- International Agency for Research on Cancer, Lyon, France
| | - E Weiderpass
- Genetic Epidemiology Group, Folkhälsan Research Center, Helsinki, Finland
- Department of Community Medicine, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
- Department of Research, Cancer Registry of Norway, Institute of Population-Based Cancer Research, Oslo, Norway
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - M C Boutron-Ruault
- Institut Gustave Roussy, Villejuif, France
- Université Paris-Saclay, Université Paris-Sud, UVSQ, CESP, INSERM, Villejuif, France
| | - C Cadeau
- Institut Gustave Roussy, Villejuif, France
- Université Paris-Saclay, Université Paris-Sud, UVSQ, CESP, INSERM, Villejuif, France
| | - M His
- Institut Gustave Roussy, Villejuif, France
- Université Paris-Saclay, Université Paris-Sud, UVSQ, CESP, INSERM, Villejuif, France
| | - D G Cox
- Centre Léon Bérard, INSERM U1052, Cancer Research Center of Lyon, Lyon, France
| | - H Boeing
- Epidemiology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), Nuthetal, Germany
| | - R T Fortner
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - R Kaaks
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - P Lagiou
- Hellenic Health Foundation, Athens, Greece
- WHO Collaborating Center for Nutrition and Health, Unit of Nutritional Epidemiology and Nutrition in Public Health, Department of Hygiene, Epidemiology and Medical Statistics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA
| | - A Trichopoulou
- Hellenic Health Foundation, Athens, Greece
- WHO Collaborating Center for Nutrition and Health, Unit of Nutritional Epidemiology and Nutrition in Public Health, Department of Hygiene, Epidemiology and Medical Statistics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - V Benetou
- WHO Collaborating Center for Nutrition and Health, Unit of Nutritional Epidemiology and Nutrition in Public Health, Department of Hygiene, Epidemiology and Medical Statistics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - R Tumino
- Cancer Registry and Histopathology Unit, Civic - M.P. Arezzo Hospital, ASP Ragusa, Ragusa, Italy
| | - S Panico
- Dipartimento di Medicina Clinica e Chirurgia, Università degli Studi di Napoli Federico II, Naples, Italy
| | - S Sieri
- Epidemiology and Prevention Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy
| | - D Palli
- Molecular and Nutritional Epidemiology Unit, Cancer Research and Prevention Institute - ISPO, Florence, Italy
| | - F Ricceri
- Unit of Cancer Epidemiology, Department of Medical Sciences, University of Turin, Turin, Italy
- Unit of Epidemiology, Regional Health Service ASL TO3, Grugliasco, Italy
| | - H B As Bueno-de-Mesquita
- Department of Social & Preventive Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
- Department for Determinants of Chronic Diseases (DCD), National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
- Department of Epidemiology and Biostatistics, The School of Public Health, Imperial College London, London, United Kingdom
| | - G Skeie
- Department of Community Medicine, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
| | - P Amiano
- CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
- Public Health Division of Gipuzkoa, BioDonostia Research Institute, San Sebastian, Spain
| | - M J Sánchez
- CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
- Escuela Andaluza de Salud Pública, Instituto de Investigación Biosanitaria ibs, GRANADA, Hospitales Universitarios de Granada/Universidad de Granada, Granada, Spain
| | - M D Chirlaque
- CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
- Department of Epidemiology, Regional Health Council, IMIB-Arrixaca, Murcia, Spain
- Department of Health and Social Sciences, Universidad de Murcia, Murcia, Spain
| | - A Barricarte
- CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid, Spain
- Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
- Navarra Public Health Institute, Pamplona, Spain
| | - J R Quirós
- Public Health Directorate, Asturias, Spain
| | - G Buckland
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Programme, Catalan Institute of Oncology (ICO-IDIBELL), Barcelona, Spain
| | - C H van Gils
- Department of Epidemiology, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands
| | - P H Peeters
- Department of Epidemiology, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College, London, United Kingdom
| | - T J Key
- Cancer Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
| | - E Riboli
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College, London, United Kingdom
| | - B Gylling
- Department of Medical Biosciences, Pathology, Umeå University, Umeå, Sweden
| | | | - M J Gunter
- International Agency for Research on Cancer, Lyon, France
| | - I Romieu
- International Agency for Research on Cancer, Lyon, France
| | - V Chajès
- International Agency for Research on Cancer, Lyon, France
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18
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He L, Shen Y. MTHFR C677T polymorphism and breast, ovarian cancer risk: a meta-analysis of 19,260 patients and 26,364 controls. Onco Targets Ther 2017; 10:227-238. [PMID: 28123304 PMCID: PMC5229257 DOI: 10.2147/ott.s121472] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Objective Previous studies have found that many gene variations can be detected in both breast cancer and ovarian cancer, which is beneficial for the elaboration of the molecular origin of breast and ovarian cancer. Furthermore, many studies have explored the association of methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism with the risk of breast cancer and/or ovarian cancer; however, the results remained inconclusive. Therefore, this study conducted a systematic review and meta-analysis to evaluate the association between MTHFR C677T polymorphism and the risk of breast and ovarian cancer. Materials and methods A total of 50 studies with 19,260 cases and 26,364 controls including 39 studies for breast cancer and 8 studies for ovarian cancer were identified on searching through PubMed, Embase, Web of Science, China National Knowledge Infrastructure, WanFang, and Database of Chinese Scientific and Technical Periodicals (VIP). Allele model, dominant model, recessive model, homozygous model, and co-dominant model were applied to evaluate the association of MTHFR C677T polymorphism with breast cancer and/or ovarian cancer risk. Moreover, the odds ratios (ORs) with 95% confidence intervals (CIs) were calculated to assess the strength of the association between MTHFR C677T polymorphism and breast and ovarian cancer risk. Results A significantly increased breast cancer risk was observed in the overall analysis (for C vs T, OR =1.19, CI: 1.12–1.28, P<0.05; for CC vs TT, OR =1.20, CI: 1.10–1.23, P<0.05; for (CT+CC) vs TT, OR =1.19, CI: 1.11–1.27, P<0.05; for CC vs (CT+TT), OR =1.19, CI: 1.79–1.95, P<0.05), while no significantly increased ovarian cancer risk was detected. In the subgroup analysis based on ethnicity, a significant association of breast cancer and/or ovarian cancer risk with MTHFR C677T polymorphism was observed in Asians. Interestingly, there was no significant association between MTHFR C677T polymorphism and ovarian cancer risk in Caucasians, whereas a significantly increased risk of breast cancer was found in Caucasians. Conclusion This meta-analysis demonstrates that MTHFR C677T polymorphism may be a risk factor for breast and ovarian cancer, especially in Asians.
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Affiliation(s)
- Lilin He
- Department of Oncology, The First People's Hospital of Tianmen City, Tianmen, Hubei Province, People's Republic of China
| | - Yongxiang Shen
- Department of Oncology, The First People's Hospital of Tianmen City, Tianmen, Hubei Province, People's Republic of China
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19
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Dietary vitamin B2 intake and breast cancer risk: a systematic review and meta-analysis. Arch Gynecol Obstet 2016; 295:721-729. [DOI: 10.1007/s00404-016-4278-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 12/19/2016] [Indexed: 10/20/2022]
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20
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Waseem M, Hussain SR, Kumar S, Serajuddin M, Mahdi F, Sonkar SK, Bansal C, Ahmad MK. Association of MTHFR (C677T) Gene Polymorphism With Breast Cancer in North India. BIOMARKERS IN CANCER 2016; 8:111-117. [PMID: 27721657 PMCID: PMC5040218 DOI: 10.4137/bic.s40446] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 09/04/2016] [Accepted: 09/06/2016] [Indexed: 02/05/2023]
Abstract
BACKGROUND Breast cancer is one of the most common malignancies in women and is associated with a variety of risk factors. The functional single-nucleotide polymorphism (SNP) C677T in the gene encoding 5,10-methylenetetrahydrofolate reductase (MTHFR) may lead to decreased enzyme activity and affect the chemosensitivity of tumor cells. This study was designed to investigate the association of MTHFR gene polymorphism (SNP) in the pathogenesis of breast cancer among the North Indian women population. MATERIALS AND METHODS Genotyping was performed by polymerase chain reaction (PCR) using genomic DNA, extracted from the peripheral blood of subjects with (275 cases) or without (275 controls) breast cancer. Restriction fragment length polymorphism was used to study C677T polymorphism in the study groups. RESULTS The distribution of MTHFR (C677T) genotype frequencies, ie, CC, TT, and CT, among the patients was 64.7%, 2.18%, and 33.09%, respectively. In the healthy control group, the CC, TT, and CT frequencies were 78.91%, 1.09%, and 20.1%, respectively. The frequencies of C and T alleles were 81.2% and 18.7%, respectively, in the patient subjects, while they were 88.9% and 11.09%, respectively, among the healthy control group. Frequencies of the CT genotype and the T allele were significantly different (P = 0.007 and P = 0.005, respectively) between the control and the case subjects. CONCLUSION This study shows an association of the CT genotype and the T allele of the MTHFR (C667T) gene with increased genetic risk for breast cancer among Indian women.
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Affiliation(s)
- Mohammad Waseem
- Molecular Cell Biology Laboratory, Department of Biochemistry, King George's Medical University, Lucknow, Uttar Pradesh, India.; Department of Zoology, Lucknow University, Lucknow, India
| | - Syed Rizwan Hussain
- Molecular Cell Biology Laboratory, Department of Biochemistry, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Shashank Kumar
- Center for Biochemistry and Microbial Sciences, Central University of Punjab, Bathinda, Punjab, India
| | | | - Farzana Mahdi
- Department of Biochemistry, Era's Lucknow Medical College and Hospital, Lucknow, Uttar Pradesh, India
| | - Satyendra Kumar Sonkar
- Molecular Cell Biology Laboratory, Department of Biochemistry, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Cherry Bansal
- Department of Pathology, Era's Lucknow Medical College and Hospital, Lucknow, Uttar Pradesh, India. Work place: Molecular Cell Biology Laboratory, Department of Biochemistry, King George's Medical University, Lucknow, Uttar Pradesh, India
| | - Mohammad Kaleem Ahmad
- Molecular Cell Biology Laboratory, Department of Biochemistry, King George's Medical University, Lucknow, Uttar Pradesh, India
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Population-level diversity in the association of genetic polymorphisms of one-carbon metabolism with breast cancer risk. J Community Genet 2016; 7:279-290. [PMID: 27541683 DOI: 10.1007/s12687-016-0277-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Accepted: 08/08/2016] [Indexed: 01/01/2023] Open
Abstract
Aberrations in one-carbon metabolism were reported to increase breast cancer risk by influencing the DNA synthesis and methylation of DNA and catecholamines. However, the results of these association studies remain inconclusive. We have explored the contribution of eight genetic polymorphisms in modulating the susceptibility to breast cancer by performing a meta-analysis of worldwide studies. In total, 62 case-control studies representing 17 different populations involving 18,117 breast cancer cases and 23,573 healthy controls were included in this meta-analysis. Out of the eight polymorphisms analyzed, methylenetetrahydrofolate reductase (MTHFR) C677T exhibited positive association with the breast cancer risk in both fixed effects (OR 1.14, 95 % CI 1.10-1.17) and random effects (OR 1.10, 95 % CI 1.02-1.18) models. Solute carrier family 19 (folate transporter), member 1 (SLC19A1) G80A exhibited positive association (OR 1.16, 95 % CI 1.03-1.31) while MTR A2756G exhibited an inverse association (OR 0.78, 95 % CI 0.75-0.82) with the breast in fixed effect model alone. Significant heterogeneity was observed in the association of MTHFR C677T with breast cancer even between studies from the same geographical area, specifically among Chinese, Indians, and Turks. Subgroup analysis revealed MTHFR C677T-mediated breast cancer risk in post-menopausal women and women with low dietary intake of folate. Geographical area wise segregation of data revealed MTHFR-mediated increased breast cancer risk in populations who consume methionine-rich diet. Altitude-level variations were observed in the association of SHMT1 C1420T with breast cancer. India and Brazil of same altitude showed an inverse association with this polymorphism, while USA and China that share similar altitude showed a null association. MTHFR C677T and SLC19A1 G80A are the two polymorphisms of one-carbon metabolic pathway that increase breast cancer in the worldwide population. Dietary patterns and altitudinal variations are the likely risk modulators that are contributing toward ethnic- and population-level variations in genetic associations.
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Corbin JM, Ruiz-Echevarría MJ. One-Carbon Metabolism in Prostate Cancer: The Role of Androgen Signaling. Int J Mol Sci 2016; 17:E1208. [PMID: 27472325 PMCID: PMC5000606 DOI: 10.3390/ijms17081208] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 07/16/2016] [Accepted: 07/18/2016] [Indexed: 01/06/2023] Open
Abstract
Cancer cell metabolism differs significantly from the metabolism of non-transformed cells. This altered metabolic reprogramming mediates changes in the uptake and use of nutrients that permit high rates of proliferation, growth, and survival. The androgen receptor (AR) plays an essential role in the establishment and progression of prostate cancer (PCa), and in the metabolic adaptation that takes place during this progression. In its role as a transcription factor, the AR directly affects the expression of several effectors and regulators of essential catabolic and biosynthetic pathways. Indirectly, as a modulator of the one-carbon metabolism, the AR can affect epigenetic processes, DNA metabolism, and redox balance, all of which are important factors in tumorigenesis. In this review, we focus on the role of AR-signaling on one-carbon metabolism in tumorigenesis. Clinical implications of one-carbon metabolism and AR-targeted therapies for PCa are discussed in this context.
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Affiliation(s)
- Joshua M Corbin
- Department of Pathology, Oklahoma University Health Sciences Center, Oklahoma City, OK 73104, USA.
| | - Maria J Ruiz-Echevarría
- Department of Pathology, Oklahoma University Health Sciences Center and Stephenson Cancer Center, Oklahoma City, OK 73104, USA.
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Joint effects of folate intake and one-carbon-metabolizing genetic polymorphisms on breast cancer risk: a case-control study in China. Sci Rep 2016; 6:29555. [PMID: 27404801 PMCID: PMC4941723 DOI: 10.1038/srep29555] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 06/20/2016] [Indexed: 12/16/2022] Open
Abstract
This study aimed to examine the joint effects of folate intake, polymorphisms of 5,10- methylenetetrahydrofolate reductase (MTHFR), methionine synthesis reductase (MTRR) and methionine synthase (MTR) genes and breast cancer risk. A case-control study of 570 consecutively recruited breast cancer cases and 576 controls was conducted in Guangzhou, China. Multifactor dimensionality reduction and logistic regression approach were used to evaluate gene-gene interaction. The covariates were chosen based on comparison of baseline characteristics of cases and controls. Folate intake was found to be inversely associated with breast cancer risk. The MTRRrs162036 GG genotype was associated with a decreased risk of breast cancer [adjusted odds ratio (OR) 0.41, 95% confidence interval (CI) 0.20–0.85]. Compared with the wild-type group (MTRRrs162036 AA with MTRrs1805087 AA) MTRRrs162036 AA with MTRrs1805087 GA + GG was associated with a decreased risk (OR 0.70, 95% CI 0.48–1.03). With the combined MTHFRrs1801131 TT and MTHFRrs1801133 GG genotypes as a reference, MTHFRrs1801131 TT with MTHFRrs1801133 GA + AA was associated with a decreased risk (OR 0.78, 95% CI 0.57 – 1.08) and MTHFRrs1801131 GT + GG with MTHFRrs1801133 GA + AA was associated with an increased risk (OR 1.35, 95% CI 0.88–2.05). The joint impact of MTRRrs162036 and MTRrs1805087, MTHFRrs1801131 and MTHFRrs1801133, folate and MTHFRrs1801133 may contribute to breast cancer risk.
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Mohammadzadeh G, Karimi M, Bazyar M, Hosseini SM. Lack of association between MTHFR C677T polymorphism and breast cancer risk in Ahvaz, west south-Iran. Adv Biomed Res 2016; 5:26. [PMID: 27014653 PMCID: PMC4785787 DOI: 10.4103/2277-9175.176352] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 03/15/2015] [Indexed: 12/11/2022] Open
Abstract
Background: Association between C677T polymorphism of the methylenetetrahydrofolate reductase (MTHFR), a key enzyme involved in folate metabolism and DNA methylation, and breast cancer risk are inconsistent. We investigated in a case-control study, possible effect of the common MTHFR C677T polymorphism on breast cancer risk in a sample of Iranian patients. Materials and Methods: The study subjects comprised of 123 breast cancer cases and 110 cancer-free control, who were matched for age and body mass index (BMI). C677T genotypes were determined by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay. Lipid profile was measured in all subjects by standard method. Results: The genotypes distributions (CC, CT, and TT) were 55.3, 39, and 5.7% in breast cancer cases and 51.8, 44.5, and 3.6% in controls. Chi square analysis revealed that there was no significant association between breast cancer risk and MTHFR genotypes and alleles. Additionally, no significant association was observed between C677T genotypes and biochemistry parameters. A multinomial logistic regression model with MTHFR genotypes, lipid profiles, BMI and age as covariates revealed that there is no significant association between MTHFR genotypes and risk of breast cancer, but higher values of LDL and HDL significantly increase risk of breast cancer. Conclusions: Our findings do not support the hypothesis that genetic variation in the MTHFR C677T polymorphism is implicated in the breast cancer risk in a sample of Iranian patients.
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Affiliation(s)
- Ghorban Mohammadzadeh
- Department of Biochemistry, Faculty of Medicine, Hyperlipidemia Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Maryam Karimi
- Department of Biochemistry, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammad Bazyar
- Department of Biochemistry, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Seyed-Mohammad Hosseini
- Department of Radiation and Clinical Oncology, Faculty of Medicine, Ahvaz Golestan Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Kumar P, Yadav U, Rai V. Methylenetetrahydrofolate reductase gene C677T polymorphism and breast cancer risk: Evidence for genetic susceptibility. Meta Gene 2015; 6:72-84. [PMID: 26629412 PMCID: PMC4634353 DOI: 10.1016/j.mgene.2015.08.008] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Revised: 08/21/2015] [Accepted: 08/31/2015] [Indexed: 12/11/2022] Open
Abstract
There are several evidences supporting the role of 5–10 methylenetetrahydrofolate reductase (MTHFR) gene polymorphisms in breast cancer (BC). Case control association studies on breast cancer have been repeatedly performed over the last two decades, but results are inconsistent. We performed a meta-analysis to confirm the association between MTHFR C677T polymorphism and BC risk. The articles were retrieved by searching the PubMed, Google Scholar, and Springer Link databases. Crude odds ratios (OR) with 95% confidence intervals (CIs) was used to assess the strength of association between C677T polymorphism and BC. Publication bias was assessed by Egger's and Begg-Mazumdar tests. Meta-analysis was performed with Open Meta Analyst. Total 75 studies with 31,315 cases and 35, 608 controls were found suitable for the inclusion in the present meta-analysis. The results of meta-analysis suggested that there were moderate significant association between C677T polymorphism and BC risk using overall comparisons in five genetic models (T vs. C: OR = 1.08, 95% CI = 1.03–1.13, p = < 0.001; TT + CT vs. CC: OR = 1.06, 95% CI = 1.02–1.09, p = < 0.001; TT vs. CC: OR = 1.17, 95% CI = 1.06–1.28, p = 0.001; CT vs. CC OR = 1.05, 95% CI = 1.01–1.08, p = 0.005; TT vs. CT + CC: OR = 1.12, 95% CI = 1.03–1.22, p = 0.005). In conclusion, results of present meta-analysis showed modest association between MTHFR C677T polymorphism with breast cancer in total studies. However, sub-group analysis results based on ethnicity showed strong significant association between TT genotype and breast cancer (TT vs. CC; OR°=°1.26; 95% CI: 1.06–1.51; p = 0.009) in Asian population but in Caucasian population such association was not observed (TT vs. CC; OR°=°1.08; 95% CI: 0.99–1.14; p = 0.05).
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Affiliation(s)
| | | | - Vandana Rai
- Corresponding author at: Human Molecular Genetics Laboratory, Department of Biotechnology, VBS Purvanchal University, Jaunpur 222 003, India.Human Molecular Genetics LaboratoryDepartment of BiotechnologyVBS Purvanchal UniversityJaunpur222 003India
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Gong Z, Yao S, Zirpoli G, Cheng TYD, Roberts M, Khoury T, Ciupak G, Davis W, Pawlish K, Jandorf L, Bovbjerg DH, Bandera EV, Ambrosone CB. Genetic variants in one-carbon metabolism genes and breast cancer risk in European American and African American women. Int J Cancer 2015; 137:666-77. [PMID: 25598430 PMCID: PMC4437886 DOI: 10.1002/ijc.29434] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 12/22/2014] [Indexed: 02/03/2023]
Abstract
Folate-mediated one-carbon metabolism plays critical roles in DNA synthesis, repair and DNA methylation. The impact of single nucleotide polymorphisms (SNPs) in folate-metabolizing enzymes has been investigated in risk of breast cancer among European or Asian populations, but not among women of African ancestry. We conducted a comprehensive analysis of SNPs in eleven genes involved in one-carbon metabolism and risk of breast cancer in 1,275 European-American (EA) and 1,299 African-American (AA) women who participated in the Women's Circle of Health Study. Allele frequencies varied significantly between EA and AA populations. A number of these SNPs, specifically in genes including MTR, MTRR, SHMT1, TYMS and SLC19A1, were associated with overall breast cancer risk, as well as risk by estrogen receptor (ER) status, in either EA or AA women. Associations appeared to be modified by dietary folate intake. Although single-SNP associations were not statistically significant after correcting for multiple comparisons, polygenetic score analyses revealed significant associations with breast cancer risk. Per unit increase of the risk score was associated with a modest 19 to 50% increase in risk of breast cancer overall, ER positive or ER negative cancer (all p < 0.0005) in EAs or AAs. In summary, our data suggest that one-carbon metabolizing gene polymorphisms could play a role in breast cancer and that may differ between EA and AA women.
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Affiliation(s)
- Zhihong Gong
- Department of Cancer Prevention & Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Song Yao
- Department of Cancer Prevention & Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Gary Zirpoli
- Department of Cancer Prevention & Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Ting-Yuan David Cheng
- Department of Cancer Prevention & Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Michelle Roberts
- Department of Cancer Prevention & Control, Roswell Park Cancer Institute, Buffalo, NY, USA
- Department of Epidemiology and Environmental Health, University at Buffalo, Buffalo, NY, USA
| | - Thaer Khoury
- Department of Pathology, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Gregory Ciupak
- Department of Cancer Prevention & Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Warren Davis
- Department of Cancer Prevention & Control, Roswell Park Cancer Institute, Buffalo, NY, USA
| | - Karen Pawlish
- New Jersey State Cancer Registry, New Jersey Department of Health, Trenton, NJ, USA
| | - Lina Jandorf
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Elisa V. Bandera
- Rutgers Cancer Institute of New Jersey, New Brunswick, NJ, USA
- Rutgers School of Public Health, Piscataway, NJ, USA
| | - Christine B. Ambrosone
- Department of Cancer Prevention & Control, Roswell Park Cancer Institute, Buffalo, NY, USA
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Pooja S, Carlus J, Sekhar D, Francis A, Gupta N, Konwar R, Kumar S, Kumar S, Thangaraj K, Rajender S. MTHFR 677C>T polymorphism and the risk of breast cancer: evidence from an original study and pooled data for 28031 cases and 31880 controls. PLoS One 2015; 10:e0120654. [PMID: 25803740 PMCID: PMC4372432 DOI: 10.1371/journal.pone.0120654] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Accepted: 02/05/2015] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Methylenetetrahydrofolate reductase (MTHFR) acts at an important metabolic point in the regulation of cellular methylation reaction. It assists in the conversion of 5, 10-methylenetetrahydrofolate to 5-methyltetrahydrofolate. The latter aids in remethylation of homocysteine to de novo methionine that is required for DNA synthesis. The objective of this study was to examine the effect of MTHFR 677 C>T polymorphism on the risk of breast cancer in the Indian sub-continent. METHODS AND RESULTS We genotyped 677 C>T locus in 1096 individuals that were classified into cases (N=588) and controls (N=508). Genotype data were analyzed using chi-square test. No significant difference was observed in the distribution of genotypes between cases and controls in north Indian (P = 0.932), south Indian (P = 0.865), and pooled data (P = 0.680). To develop a consensus regarding the impact of 677C>T polymorphism on breast cancer risk, we also conducted a meta-analysis on 28031 cases and 31880 controls that were pooled from sixty one studies. The overall summary estimate upon meta-analysis suggested no significant correlation between the 677C>T substitution and breast cancer in the dominant model (Fixed effect model: OR = 0.97, P=0.072, Random effects model: OR = 0.96, P = 0.084) or the recessive model (Fixed effect model: OR = 1.05, P = 0.089; Random effects model: OR= 1.08, P= 0.067). CONCLUSION 677 C>T substitution does not affect breast cancer risk in the Indo-European and Dravidian populations of India. Analysis on pooled data further ruled out association between the 677 C>T polymorphism and breast cancer. Therefore, 677 C>T substitution does not appear to influence the risk of breast cancer.
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Affiliation(s)
- Singh Pooja
- Division of Endocrinology, Central Drug Research Institute, Lucknow, India
- Department of Pathology, King George’s Medical University, Lucknow, India
| | - Justin Carlus
- Centre for Genetics and Inherited Diseases (CGID), Taibah University, Al- Madinah, Kingdom of Saudi Arabia
- Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad, India
| | - Deepa Sekhar
- Division of Endocrinology, Central Drug Research Institute, Lucknow, India
| | | | - Nishi Gupta
- Division of Endocrinology, Central Drug Research Institute, Lucknow, India
| | - Rituraj Konwar
- Division of Endocrinology, Central Drug Research Institute, Lucknow, India
| | - Sandeep Kumar
- All India Institute of Medical Sciences, Bhopal, India
| | - Surender Kumar
- Department of Surgery, King George’s Medical University, Lucknow, India
| | | | - Singh Rajender
- Division of Endocrinology, Central Drug Research Institute, Lucknow, India
- * E-mail:
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Single-nucleotide polymorphisms in one-carbon metabolism genes, Mediterranean diet and breast cancer risk: a case-control study in the Greek-Cypriot female population. GENES AND NUTRITION 2015; 10:453. [PMID: 25604861 DOI: 10.1007/s12263-015-0453-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Accepted: 01/05/2015] [Indexed: 01/24/2023]
Abstract
Single-nucleotide polymorphisms (SNPs) within genes of the one-carbon metabolism pathway have been shown to interact with dietary folate intake to modify breast cancer (BC) risk. Our group has previously demonstrated that the Mediterranean dietary pattern, rich in beneficial one-carbon metabolism micronutrients, protects against BC in Greek-Cypriot women. We aimed to investigate whether SNPs in the MTHFR (rs1801133 and rs1801131) and MTR (rs1805087) genes modify the effect of the Mediterranean dietary pattern on BC risk. Dietary intake data were obtained using a 32-item food-frequency questionnaire. A dietary pattern specific to the Greek-Cypriot population, which closely resembles the Mediterranean diet, was derived using principal component analysis (PCA) and used as our dietary variable. Genotyping was performed on subjects from the MASTOS study, a case-control study of BC in Cyprus, using TaqMan assays. Adjusted odds ratios (ORs) were estimated using logistic regression analyses. High adherence to the PCA-derived Mediterranean dietary pattern further reduced BC risk with increasing number of variant MTHFR 677T alleles (ORQ4vs.Q1 for 677TT = 0.37, 95 % CI 0.20-0.69, for 677 CT = 0.60, 95 % CI 0.42-0.86). Additionally, high adherence to the Mediterranean dietary pattern decreased BC risk in subjects with at least one MTR 2756A allele (ORQ4vs.Q1 for 2756AA = 0.59, 95 % CI 0.43-0.81, for 2756AG = 0.59, 95 % CI 0.39-0.91) and in subjects with the MTHFR 1298CC genotype (ORQ4vs.Q1 0.44, 95 % CI 0.30-0.65). Overall P-interaction values, however, were not statistically significant. Our study suggests that these MTHFR and MTR SNPs may act as effect modifiers, highlighting their biological significance in the association between Mediterranean diet, the one-carbon metabolism pathway and BC.
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Liu Y, Zhou LS, Xu XM, Deng LQ, Xiao QK. Association of dietary intake of folate, vitamin B6 and B12 and MTHFR genotype with breast cancer risk. Asian Pac J Cancer Prev 2014; 14:5189-92. [PMID: 24175799 DOI: 10.7314/apjcp.2013.14.9.5189] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
AIM We aimed to investigate the associations of dietary intake of folate, vitamin B6 and B12 and MTHFR genotype with breast cancer in a Chinese population. METHODS A matched case-control study was conducted, and 435 patients with newly diagnosed and histologically confirmed breast cancer and 435 controls were collected. The folate intake, vitamin B6 and vitamin B12 were calculated, and MTHFR C665T, C677T and A1298C were analyzed by PCR-RFLP. RESULTS We found vitamin B12 was likely to reduce the risk of breast cancer, and MTHFR 665TT was associated with increased risk of breast cancer. Folate intake, vitamin B12 intake and variants of MTHFR C677T and MTHFR A1298C demonstrated no association with risk of breast cancer. However, we found patients with low intake of vitamin B6 and MTHFR 665TT genotype had a higher risk of breast cancer (OR=1.87, 95% CI=1.29-2.77), the association being less pronounced among subjects with a moderate intake of vitamin B6 and MTHFR 665TT genotype (OR=1.58, 95% CI=1.03-2.49, P=0.03). CONCLUSION Our study indicated that the MTHFR C665T polymorphism and vitamin B6 are associated with risk of breast cancer, which indicated roles for nutrients in developing breast cancer.
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Affiliation(s)
- Ying Liu
- The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China E-mail :
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30
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Bănescu C, Iancu M, Trifa AP, Macarie I, Dima D, Dobreanu M. The methylenetetrahydrofolate reductase (MTHFR) 677 C>T polymorphism increases the risk of developing chronic myeloid leukemia-a case-control study. Tumour Biol 2014; 36:3101-7. [PMID: 25510667 DOI: 10.1007/s13277-014-2946-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Accepted: 12/04/2014] [Indexed: 01/10/2023] Open
Abstract
The methylenetetrahydrofolate reductase (MTHFR) 677 C>T and 1298 A>C polymorphisms are associated with variations in folate levels, a phenomenon linked to the development of various malignancies. The aim of this study was to investigate the influence of the 677 C>T and 1298 A>C polymorphisms in the MTHFR gene on the risk of developing chronic myeloid leukemia (CML). Our study included 151 patients with CML and 305 controls. The MTHFR 677 C>T and 1298 A>C polymorphisms were investigated by polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) and allele-specific PCR techniques. The CT and TT genotypes of the MTHFR 677 C>T polymorphism were associated with an increased risk of developing CML (odds ratio (OR) = 1.556, 95% confidence interval (CI) = 1.017-2.381, p value = 0.041, and OR = 1.897, 95% CI = 1.046-3.44, p value = 0.035, respectively). No association was observed between the prognostic factors (blasts, basophils, additional chromosomal abnormalities, EUTOS score, Sokal and Hasford risk groups) and the MTHFR 677 C>T and 1298 A>C variant genotypes in CML patients. Our study shows that the MTHFR 677 C>T polymorphism is significantly associated with the risk of CML in Romanian patients.
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Affiliation(s)
- Claudia Bănescu
- Department of Medical Genetics, University of Medicine and Pharmacy, Tirgu Mures, Romania
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Slaoui M, Razine R, Ibrahimi A, Attaleb M, Mzibri ME, Amrani M. Breast cancer in Morocco: a literature review. Asian Pac J Cancer Prev 2014; 15:1067-74. [PMID: 24606420 DOI: 10.7314/apjcp.2014.15.3.1067] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
In Morocco, breast cancer is the most prevalent cancer in women and a major public health problem. Several Moroccan studies have focused on studying this disease, but more are needed, especially at the genetic and molecular levels. It is therefore interesting to establish the genetic and molecular profile of Moroccan patients with breast cancer. In this paper, we will highlight some pertinent hypotheses that may enhance breast cancer care in Moroccan patients. This review will give a precise description of breast cancer in Morocco and propose some new markers for detection and prediction of breast cancer prognosis.
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Affiliation(s)
- Meriem Slaoui
- Equipe de Recherche ONCOGYMA, Universite Mohamed V-Souissi Faculty of Medicine and Pharmacy of Rabat, Rabat, Morocco E-mail : ,
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Methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism: epidemiology, metabolism and the associated diseases. Eur J Med Genet 2014; 58:1-10. [PMID: 25449138 DOI: 10.1016/j.ejmg.2014.10.004] [Citation(s) in RCA: 246] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 10/26/2014] [Indexed: 02/06/2023]
Abstract
The Methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism is associated with various diseases (vascular, cancers, neurology, diabetes, psoriasis, etc) with the epidemiology of the polymorphism of the C677T that varies dependent on the geography and ethnicity. The 5,10-Methylenetetrahydrofolate reductase (MTHFR) locus is mapped on chromosome 1 at the end of the short arm (1p36.6). This enzyme is important for the folate metabolism which is an integral process for cell metabolism in the DNA, RNA and protein methylation. The mutation of the MTHFR gene which causes the C677T polymorphism is located at exon 4 which results in the conversion of valine to alanine at codon 222, a common polymorphism that reduces the activity of this enzyme. The homozygous mutated subjects have higher homocysteine levels while the heterozygous mutated subjects have mildly raised homocysteine levels compared with the normal, non-mutated controls. Hyperhomocysteinemia is an emerging risk factor for various cardiovascular diseases and with the increasing significance of this polymorphism in view of the morbidity and mortality impact on the patients, further prevention strategies and nutritional recommendations with the supplementation of vitamin B12 and folic acid which reduces plasma homocysteine level would be necessary as part of future health education. This literature review therefore focuses on the recent evidence-based reports on the associations of the MTHFR C677T polymorphism and the various diseases globally.
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Bravatà V. Controversial roles of methylenetetrahydrofolate reductase polymorphisms and folate in breast cancer disease. Int J Food Sci Nutr 2014; 66:43-9. [PMID: 25318348 DOI: 10.3109/09637486.2014.959896] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Breast cancer (BC) represents a highly heterogeneous tumour at both the clinical and molecular levels. Single-nucleotide polymorphisms (SNPs) of the folate-metabolising enzyme methylenetetrahydrofolate-reductase (MTHFR) may modify the association between folate intake and BC and influence plasma folate concentration. The role of folate in BC is equivocal, association studies between the common MTHFR SNPs C677T and A1298C and BC risk are controversial. In this study, I have reviewed observed associations between folate intake, as well as its blood levels, and BC. The purpose of this review is to analyse the role of folate and the two SNPs associated with reduced enzyme activity in BC. I explored the most relevant and updated work that emphasises positive and negative associations among these variables. My findings indicate that no definitive conclusions can be drawn from the studies on this topic. However, this manuscript highlights variables that could be useful to explore in further association analyses.
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Affiliation(s)
- Valentina Bravatà
- IBFM CNR -- LATO, Contrada Pietrapollastra Pisciotto , 90015 Cefalù (PA) , Italy
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Zhong S, Chen Z, Yu X, Li W, Tang J, Zhao J. A meta-analysis of genotypes and haplotypes of methylenetetrahydrofolate reductase gene polymorphisms in breast cancer. Mol Biol Rep 2014; 41:5775-85. [PMID: 24973876 DOI: 10.1007/s11033-014-3450-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 06/11/2014] [Indexed: 12/28/2022]
Abstract
The association between methylenetetrahydrofolate reductase (MTHFR) gene polymorphisms and breast cancer risk has been extensively explored, but their results are conflicting rather than conclusive. To derive a more precise estimation, we carried out not only an updated meta-analysis but also a combined analysis based on all the available studies estimating the association between MTHFR C677T and/or A1298C and breast cancer risk. With respect to C677T polymorphism, the results suggested that 677T allele was associated with significantly elevated breast cancer risk in overall analysis (T vs. C: OR 1.073, 95 % CI 1.028-1.120; TT vs. CC: OR 1.177, 95 % CI 1.072-1.293; TT vs. CC + CT: OR 1.175, 95 % CI 1.073-1.288); Stratifying by ethnicity, significantly increased risk was only found in East Asians (T vs. C: OR 1.150, 95 % CI 1.039-1.273; TT vs. CC: OR 1.441, 95 % CI 1.145-1.814; TT vs. CC + CT: OR 1.413, 95 % CI 1.148-1.739); When stratified by menopausal status, statistically significant association was found for postmenopausal women (CT + TT vs. CC: OR 1.092, 95 % CI 1.011-1.179). In regard to A1298C polymorphism, no significant associations were found between the polymorphism and breast cancer risk. With respect to MTHFR haplotypes, significantly elevated breast cancer risk was associated with 677T-1298C for overall result (OR 1.498, 95 % CI 1.143-1.962) and for Caucasians (OR 2.088, 95 % CI 1.277-3.416) when compared with 677C-1298A; Haplotype 677C-1298C might provide higher protection than 677C-1298A in East Asians (OR 0.840, 95 % CI 0.742-0.949). The combined genotypes for C677T and A1298C produced a significant OR for the 677TT/1298AC relative to 677CC/1298AA in overall population (OR 2.047, 95 % CI 1.275-3.288); When stratified by ethnicity, significant ORs were only found for East Asians (677CC/1298CC vs. 677CC/1298AA: OR 0.686, 95 % CI 0.478-0.985; 677TT/1298AC vs. 677CC/1298AA: OR 2.181, 95 % CI 1.179-4.035). The findings suggest that the MTHFR C677T polymorphism but not A1298C, and some variants on their combined genotypes or haplotypes may be involved with the development of breast cancer.
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Affiliation(s)
- Shanliang Zhong
- Center of Clinical Laboratory Science, Jiangsu Cancer Hospital Affiliated to Nanjing Medical University, Baiziting 42, Nanjing, 210009, China
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Li K, Li W, Dong X. Association of 677 C>T (rs1801133) and 1298 A>C (rs1801131) polymorphisms in the MTHFR gene and breast cancer susceptibility: a meta-analysis based on 57 individual studies. PLoS One 2014; 9:e71290. [PMID: 24945727 PMCID: PMC4063741 DOI: 10.1371/journal.pone.0071290] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2012] [Accepted: 07/02/2013] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVE The 677 C>T and 1298 A>C polymorphisms of methylenetetrahydrofolate reductase (MTHFR) gene have been widely reported and considered to have a significant effect on breast cancer risk, but the results are inconsistent. A meta-analysis based on 57 eligible studies was carried out to clarify the role of MTHFR gene polymorphisms in breast cancer. METHODS AND RESULTS Eligible articles were identified by searching databases including PubMed, Web of Science, EMBASE, CNKI and CBM for the period up to August 2012. Finally, a total of 57 studies were included in this meta-analysis. Crude ORs with 95% CIs were used to assess the association between the MTHFR polymorphisms and breast cancer risk. The pooled ORs were performed with additive model, dominant model and recessive model, respectively. Subgroup analysis was also performed by ethnicity. The statistical heterogeneity across studies was examined with χ2-based Q-test. A meta-analysis was performed using the Stata 12.0 software. Overall, the 677 C allele was significantly associated with breast cancer risk (OR = 0.942, 95%CI = 0.898 to 0.988) when compared with the 677 T allele in the additive model, and the same results were also revealed under other genetic models. Simultaneously, the 1298 A allele was not associated with the breast cancer susceptibility when compared with the 1298 C allele (OR = 0.993, 95%CI = 0.978 to 1.009). Furthermore, analyses under the dominant, recessive and the allele contrast model yielded similar results. CONCLUSIONS The results of this meta-analysis suggest that 677 C>T polymorphism in the MTHFR gene may contribute to breast cancer development. However, the 1298 A>C polymorphism is not significantly associated with increased risks of breast cancer.
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Affiliation(s)
- Kai Li
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, P. R. China
- * E-mail:
| | - Wusheng Li
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, P. R. China
| | - Xi Dong
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, P. R. China
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Chen P, Li C, Li X, Li J, Chu R, Wang H. Higher dietary folate intake reduces the breast cancer risk: a systematic review and meta-analysis. Br J Cancer 2014; 110:2327-38. [PMID: 24667649 PMCID: PMC4007237 DOI: 10.1038/bjc.2014.155] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 02/27/2014] [Accepted: 02/28/2014] [Indexed: 01/20/2023] Open
Abstract
Background: Many epidemiological studies have investigated the association between folate intake, circulating folate level and risk of breast cancer; however, the findings were inconsistent between the studies. Methods: We searched the PubMed and MEDLINE databases updated to January, 2014 and performed the systematic review and meta-analysis of the published epidemiological studies to assess the associations between folate intake level, circulating folate level and the overall risk of breast cancer. Results: In all, 16 eligible prospective studies with a total of 744 068 participants and 26 205 breast cancer patients and 26 case–control studies with a total of 16 826 cases and 21 820 controls that have evaluated the association between folate intake and breast cancer risk were identified. Pooled analysis of the prospective studies and case–control studies suggested a potential nonlinearity relationship for dietary folate intake and breast cancer risk. Prospective studies indicated a U-shaped relationship for the dietary folate intake and breast cancer risk. Women with daily dietary folate intake between 153 and 400 μg showed a significant reduced breast cancer risk compared with those <153 μg, but not for those >400 μg. The case–control studies also suggested a significantly negative correlation between the dietary folate intake level and the breast cancer risk. Increased dietary folate intake reduced breast cancer risk for women with higher alcohol intake level, but not for those with lower alcohol intake. No significant association between circulating folate level and breast cancer risk was found when the results of 8 identified studies with 5924 participants were pooled. Conclusions: Our studies suggested that folate may have preventive effects against breast cancer risk, especially for those with higher alcohol consumption level; however, the dose and timing are critical and more studies are warranted to further elucidate the questions.
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Affiliation(s)
- P Chen
- Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Shanghai 200031, People's Republic of China
| | - C Li
- Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Shanghai 200031, People's Republic of China
| | - X Li
- Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Shanghai 200031, People's Republic of China
| | - J Li
- Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Shanghai 200031, People's Republic of China
| | - R Chu
- Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Shanghai 200031, People's Republic of China
| | - H Wang
- 1] Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of the Chinese Academy of Sciences, Shanghai 200031, People's Republic of China [2] Key Laboratory of Food Safety Risk Assessment, Ministry of Health, Beijing 100021, People's Republic of China [3] School of Life Science and Technology, ShanghaiTech University, Shanghai 200031, People's Republic of China
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Kang D, Lee SA. Antioxidant Vitamins and Genetic Polymorphisms in Breast Cancer. Cancer 2014. [DOI: 10.1016/b978-0-12-405205-5.00016-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Gong Z, Ambrosone CB, McCann SE, Zirpoli G, Chandran U, Hong CC, Bovbjerg DH, Jandorf L, Ciupak G, Pawlish K, Lu Q, Hwang H, Khoury T, Wiam B, Bandera EV. Associations of dietary folate, Vitamins B6 and B12 and methionine intake with risk of breast cancer among African American and European American women. Int J Cancer 2013; 134:1422-35. [PMID: 23996837 DOI: 10.1002/ijc.28466] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Accepted: 08/22/2013] [Indexed: 01/06/2023]
Abstract
African American (AA) women are more likely than European American (EA) women to be diagnosed with breast cancer at younger ages and to develop poor prognosis tumors. However, these racial differences are largely unexplained. Folate and other methyl-group nutrients may be related to breast carcinogenesis, but few studies have examined these associations in AA populations. We examined the associations of dietary intake of these nutrients with breast cancer risk overall, by menopausal and estrogen receptor (ER) status among 1,582 AA (749 cases) and 1,434 EA (744 cases) women using data from a case-control study, the Women's Circle of Health Study. Unconditional multivariable logistic regression models were used to compute odds ratios (ORs) and 95% confidence intervals (CIs) for the association of each nutrient and breast cancer risk. In AA women, inverse associations were observed for natural food folate intake among premenopausal women (fourth vs. first quartile: OR = 0.57, 95% CI, 0.33-1.00; p for trend = 0.06) and for ER-positive tumors (fourth vs. first quartile: OR = 0.58, 95% CI, 0.36-0.93; p for trend = 0.03), whereas in EA women, a positive association was observed for intake of synthetic folate (fourth vs. first quartile: OR = 1.53, 95% CI, 1.06-2.21; p for trend = 0.03). Our findings suggest that natural food folate intake is inversely associated with breast cancer risk and that this association may vary by race, menopausal status or ER status. The finding of an increased risk observed among EA women with the highest intake of synthetic folate from fortified foods warrants further investigation.
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Affiliation(s)
- Zhihong Gong
- Department of Cancer Prevention & Control, Roswell Park Cancer Institute, Buffalo, NY
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Association of vitamin B6, vitamin B12 and methionine with risk of breast cancer: a dose-response meta-analysis. Br J Cancer 2013; 109:1926-44. [PMID: 23907430 PMCID: PMC3790153 DOI: 10.1038/bjc.2013.438] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 07/02/2013] [Accepted: 07/09/2013] [Indexed: 12/31/2022] Open
Abstract
Background: Epidemiological studies evaluating the association of vitamin B6, vitamin B12 and methionine with breast cancer risk have produced inconsistent results. Methods: Pertinent studies were identified by a search in PubMed and Web of Knowledge. Random-effect model was used. Dose–response relationship was assessed by restricted cubic spline. Results: The combined relative risk (95% confidence interval) of breast cancer for the highest vs lowest category of serum pyridoxal 5′-phosphate (PLP, active form of vitamin B6) levels and dietary methionine intake was 0.80 (0.66–0.98, P=0.03) and 0.94 (0.89–0.99, P=0.03), respectively, and the associations of breast cancer with higher serum PLP levels and dietary methionine intake were significant among post-menopausal women, but not among pre-menopausal women. The inverse association between breast cancer risk and dietary vitamin B6 intake, serum vitamin B12 levels and dietary vitamin B12 intake was not significant overall. Linear dose–response relationship was found, and the risk of breast cancer decreased by 23% (P<0.00) for every 100 pmol ml−1 increment in PLP levels and 4% (P=0.05) for every 1 g per day increment in dietary methionine intake, respectively. Conclusion: Serum PLP levels and methionine intake might be inversely associated with breast cancer risk, especially among postmenopausal women, which need to be confirmed.
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Dietary intake of B vitamins and methionine and breast cancer risk. Cancer Causes Control 2013; 24:1555-63. [PMID: 23686442 DOI: 10.1007/s10552-013-0232-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 05/09/2013] [Indexed: 01/10/2023]
Abstract
PURPOSE We investigated prospectively the relationship between dietary intakes of methionine and B vitamins associated with one-carbon metabolism and breast cancer risk, including modification by age, hormone receptor status and alcohol consumption. Interactions between different B vitamins and methionine were also examined. METHODS During follow-up of 20,756 women from the Melbourne Collaborative Cohort Study for an average of 16 years, we ascertained 936 incident breast cancers. Dietary intakes were estimated using a 121-item food frequency questionnaire. Hazard ratios (HR) and 95 % confidence intervals were estimated using Cox regression. RESULTS We found weak evidence for an inverse association between breast cancer risk and riboflavin intake (fourth versus first quartile, HR Q4 vs. Q1 = 0.84 (0.69, 1.01); p linear trend = 0.05) and a positive association for vitamin B12 (HR Q4 vs. Q1 = 1.21 (1.00, 1.46); p linear trend = 0.06). We did not find any significant interactions between alcohol consumption and any of the B vitamins or methionine intake (all p interaction > 0.17) or between methionine or folate intake and any other B vitamins (all p interaction > 0.07). No association varied by tumor hormone receptor status (all p homogeneity > 0.14). CONCLUSIONS We found weak evidence of an inverse association between breast cancer risk and riboflavin intake and a positive association with vitamin B12.
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Yu L, Chen J. Association of MTHFR Ala222Val (rs1801133) polymorphism and breast cancer susceptibility: An update meta-analysis based on 51 research studies. Diagn Pathol 2012; 7:171. [PMID: 23217001 PMCID: PMC3536596 DOI: 10.1186/1746-1596-7-171] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 11/30/2012] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The association between MTHFR Ala222Val polymorphism and breast cancer (BC) risk are inconclusive. To derive a more precise estimation of the relationship, a systematic review and meta-analysis was performed. METHODS A comprehensive search was conducted through researching MEDLINE, EMBASE, PubMed, Web of Science, Chinese Biomedical Literature database (CBM) and China National Knowledge Infrastructure (CNKI) databases before August 2012. Crude odds ratios (ORs) with 95% confidence intervals (CIs) were calculated to estimate the strength of the association. RESULTS A total of 51 studies including 20,907 cases and 23,905 controls were involved in this meta-analysis. Overall, significant associations were found between MTHFR Ala222Val polymorphism and BC risk when all studies pooled into the meta-analysis (Ala/Ala vs Val/Val: OR=0.870, 95%CI=0.789-0.958,P=0.005; Ala/Val vs Val/Val: OR=0.895, 95%CI=0.821-0.976, P=0.012; dominant model: OR=0.882, 95%CI=0.808-0.963, P=0.005; and recessive model: OR = 0.944, 95%CI=0.898-0.993, P=0.026; Ala allele vs Val allele: OR = 0.935, 95%CI=0.887-0.986, P=0.013). In the subgroup analysis by ethnicity, the same results were found in Asian populations, while no significant associations were found for all comparison models in other Ethnicity populations. CONCLUSION In conclusion, our meta-analysis provides the evidence that MTHFR Ala222Val gene polymorphisms contributed to the breast cancer development. VIRTUAL SLIDES The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/1966146911851976.
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Affiliation(s)
- Liwa Yu
- Department of General Surgery, the Secondary Hospital of Tianjin Medical University, Tianjin 300211, China
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Association of methylenetetrahydrofolate reductase (MTHFR 677C>T) and thymidylate synthase (TSER and TS 1494del6) polymorphisms with premature ovarian failure in Korean women. Menopause 2012; 19:1260-6. [DOI: 10.1097/gme.0b013e3182556b08] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Izmirli M. A literature review of MTHFR (C677T and A1298C polymorphisms) and cancer risk. Mol Biol Rep 2012; 40:625-37. [PMID: 23076526 DOI: 10.1007/s11033-012-2101-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Accepted: 10/03/2012] [Indexed: 12/18/2022]
Abstract
5,10-Methlenetetrahydrofolate reductase (MTHFR) is one of the most important enzymes for folate metabolism. This enzyme is mapped on chromosome 1, which is located at the end of the short arm (1p36.3). The C677T and A1298C are MTHFR polymorphisms that decrease in vitro MTHFR enzyme activity. Folate metabolism plays a key role in cell metabolism. These reactions are associated with purine-pyrimidine synthesis: DNA, RNA, and protein methylation. Polymorphism is also a factor in biodiversity, and be affected by ethnic heritage and geographic locale. In the case of unknown outcomes, not only should all geographical regions be investigated to ascertain biodiversity, but all populations as well to fully understand the variations in the effect. PUBMED was searched from January 2006 to December 2011 to develop an investigatory pursuit strategy. MTHFR, cancer, C677T, A1298C, and polymorphisms were key words used to focus the search. The literature review included all published relevant cancer types and MTHFR polymorphisms for that 5 years period. All selected polymorphisms data for cancer types was listed in tables for easy access and retrieval.
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Affiliation(s)
- Muzeyyen Izmirli
- Department of Medical Biology, Faculty of Medicine, Bezmialem Vakif University, 34093 Istanbul, Turkey.
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Diakite B, Tazzite A, Hamzi K, Jouhadi H, Nadifi S. Methylenetetrahydrofolate reductase C677T polymorphism and breast cancer risk in Moroccan women. Afr Health Sci 2012; 12:204-9. [PMID: 23056029 DOI: 10.4314/ahs.v12i2.20] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Methylenetetrahydrofolate (MTHFR) enzyme plays an important role in folate metabolism which is involved in DNA methylation, repair, and synthesis. OBJECTIVE We investigated if the MTHFR C677T polymorphism modulates the risk of developing breast cancer in Moroccan women. METHODS Genotyping was performed by PCR-RFLP method on a sample of 96 patients with breast cancer and 117 controls. RESULTS A positive correlation was found between the MTHFR C677T polymorphism and progesterone receptors expression (p= 0.04). According to menopausal status, the heterozygous CT (OR = 2.29 and P = 0.03) was statistically significant in pre-menopausal women. There was a significant association between C677T polymorphism and breast cancer risk in both additive (OR = 2.2, 95% CI = 1.24-3.86, p = 0.007) and dominant (OR = 2.10, CI 95% = 1.21-3.64, p = 0.008) models. In addition, the T allele were associated with a high breast cancer risk (OR = 1.59, 95% CI = 1.04-2.44, p = 0.03). CONCLUSION In the light of our preliminary study, 677T allele and 677CT MTHFR genotype may represent a genetic determinant increasing breast cancer risk in Moroccan women. A larger study including a larger sample size and more information is needed to confirm our conclusions.
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Affiliation(s)
- B Diakite
- Genetics and Molecular Pathology Laboratory, Medical school of Casablanca, University Hassan II, Morocco
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Kelemen LE, Wang Q, Dinu I, Vierkant RA, Tsai YY, Cunningham JM, Phelan CM, Fridley BL, Amankwah EK, Iversen ES, Berchuck A, Schildkraut JM, Goode EL, Sellers TA. Regular Multivitamin Supplement Use, Single Nucleotide Polymorphisms in ATIC, SHMT2, and SLC46A1, and Risk of Ovarian Carcinoma. Front Genet 2012; 3:33. [PMID: 22461784 PMCID: PMC3306919 DOI: 10.3389/fgene.2012.00033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Accepted: 02/23/2012] [Indexed: 01/07/2023] Open
Abstract
ATIC, SHMT2, and SLC46A1 have essential roles in one-carbon (1-C) transfer. The authors examined whether associations between ovarian carcinoma and 15 variants in these genes are modified by regular multivitamin use, a source of 1-C donors, among Caucasian participants from two US case-control studies. Using a phased study design, variant-by-multivitamin interactions were tested, and associations between variants and ovarian carcinoma were reported stratified by multivitamin supplement use. Per-allele risk associations were modified by multivitamin use at six variants among 655 cases and 920 controls (Phase 1). In a larger sample of 968 cases and 1,265 controls (Phases 1 and 2), interactions were significant (P ≤ 0.03) for two variants, particularly among regular multivitamin users: ATIC rs7586969 [odds ratio (OR) = 0.7, 95% confidence interval (CI) = 0.6-0.9] and ATIC rs16853834 (OR = 1.5, 95% CI = 1.1-2.0). The two ATIC single nucleotide polymorphisms (SNPs) did not share the same haplotype; however, the haplotypes they comprised mirrored their SNP risk associations among regular multivitamin supplement users. A multi-variant analysis was also performed by comparing the observed likelihood ratio test statistic from adjusted models with and without the two ATIC variant-by-multivitamin interaction terms with a null distribution of test statistics generated by permuting case status 10,000 times. The corresponding observed P value of 0.001 was more extreme than the permutation-derived P value of 0.009, suggesting rejection of the null hypothesis of no association. In summary, there is little statistical evidence that the 15 variants are independently associated with risk of ovarian carcinoma. However, the statistical interaction of ATIC variants with regular multivitamin intake, when evaluated at both the SNP and gene level, may support these findings as relevant to ovarian health and disease processes.
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Affiliation(s)
- Linda E. Kelemen
- Department of Population Health Research, Alberta Health Services-Cancer CareCalgary, AB, Canada
- Department of Medical Genetics, University of CalgaryCalgary, AB, Canada
- Department of Oncology, University of CalgaryCalgary, AB, Canada
| | - Qinggang Wang
- Department of Population Health Research, Alberta Health Services-Cancer CareCalgary, AB, Canada
| | - Irina Dinu
- Department of Public Health Sciences, University of AlbertaEdmonton, AB, Canada
| | | | - Ya-Yu Tsai
- Division of Cancer Prevention and Control, H. Lee Moffitt Cancer Center and Research InstituteTampa, FL, USA
| | - Julie M. Cunningham
- Department of Laboratory Medicine and Pathology, Mayo ClinicRochester, MN, USA
| | - Catherine M. Phelan
- Division of Cancer Prevention and Control, H. Lee Moffitt Cancer Center and Research InstituteTampa, FL, USA
| | - Brooke L. Fridley
- Department of Health Sciences Research, Mayo ClinicRochester, MN, USA
| | - Ernest K. Amankwah
- Department of Population Health Research, Alberta Health Services-Cancer CareCalgary, AB, Canada
| | - Edwin S. Iversen
- Department of Community and Family Medicine, Duke University Medical CenterDurham, NC, USA
| | - Andrew Berchuck
- Department of Community and Family Medicine, Duke University Medical CenterDurham, NC, USA
| | - Joellen M. Schildkraut
- Department of Community and Family Medicine, Duke University Medical CenterDurham, NC, USA
| | - Ellen L. Goode
- Department of Health Sciences Research, Mayo ClinicRochester, MN, USA
| | - Thomas A. Sellers
- Division of Cancer Prevention and Control, H. Lee Moffitt Cancer Center and Research InstituteTampa, FL, USA
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Folate and choline metabolism gene variants in relation to ovarian cancer risk in the Polish population. Mol Biol Rep 2011; 39:5553-60. [PMID: 22183302 DOI: 10.1007/s11033-011-1359-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Accepted: 12/12/2011] [Indexed: 01/25/2023]
Abstract
Data indicates that genetic factors alone do not account for ovarian tumorigenesis, suggesting that epigenetic status additionally affects this process. Therefore, we assessed the possible contribution of polymorphic variants of genes that may affect DNA methylation to the risk of ovarian cancer incidence in the Polish population. Using PCR-RFLP and HRM analyses, we studied the distribution of BHMT (rs3733890), MTHFD1 (rs2236225), MTHFR (rs1801133), MTR (rs1805087), MTRR (rs1801394) and TCN2 (rs1801198) genotypes and alleles in patients with ovarian cancer (n = 136) and controls (n = 160). Moreover, using DNA and methylation-specific PCR (MSP) we also determined the methylation of the Cadherin 13 (CDH13) promoter in cancerous tissue from these patients. We did not observe a significant association between all studied gene variants and the incidence of ovarian cancer. The lowest P (trend) = 0.1226 was observed for the MTHFR Ala222Val polymorphism. Moreover, the lowest P = 0.0772 was found in the comparison of MTHFR Ala/Ala versus Val/Val and Val/Ala genotypes in patients and control groups. The multifactor dimensionality reduction analysis also did not indicate a significant interactive genetic effect on ovarian cancer incidence for all analyzed SNPs. However, we observed frequent methylation of the CDH13 promoter in approximately 21% (29/136) patients with ovarian carcinomas. Our results might suggest that the selected polymorphic gene variants may not contribute to ovarian cancer incidence.
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Associations of polymorphisms of folate cycle enzymes and risk of breast cancer in a Brazilian population are age dependent. Mol Biol Rep 2011; 39:4899-907. [PMID: 22134752 DOI: 10.1007/s11033-011-1285-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Accepted: 11/24/2011] [Indexed: 12/26/2022]
Abstract
Polymorphisms in genes involved in folate metabolism have been shown to be implicated in breast cancer risk but with contradictory results. In this case-control study, we investigated the association between MTHFR C677T and A1298C, TYMS 5'-UTR, MTR A2756G and cSHMT C1420T and also the folate carrier (RFC1 G80A) and breast cancer risk in a northeastern Brazilian population. The study included 183 women diagnosed with breast cancer and 183 controls volunteers without any history of cancer. Also a significant number of healthy individuals were included for allelic frequency in the population studied. Risk of breast cancer was estimated by conditional logistic regression. An association with risk was found for women carrying the MTR A2756G polymorphic allele (AG, P = 0.0036; AG/GG, P = 0.0040), and a protective effect in carriers of the RFC1 G80A polymorphic allele (GA, P = 0.0015; AA, P = 0.0042). Stratifying the data by age (cutoff point of 50 years old), different distributions were observed for breast cancer risk. For women ≤50 years, the risk observed in the presence of the polymorphic allele MTR 2756 (AG/GG) in the general analysis was, restricted to this age group (P = 0.0118). Conversely, for women over 50, the risk of breast cancer development was statistically associated with the MTHFR 677CT genotype, but especially significant was risk associated with the presence of the polymorphic allele of cSHMT C1420T (P = 0.0120) and the protective effect associated with the RFC1 G80A polymorphism allele (P = 0.0021), was restrict to this age group. These data indicate that the cutoff age used (50 years old) was appropriate, since it was able to discriminate risk in each age group in the population studied and also to point to the importance of age in the analyses of cancer-associated polymorphisms.
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Prasad VVTS, Wilkhoo H. Association of the functional polymorphism C677T in the methylenetetrahydrofolate reductase gene with colorectal, thyroid, breast, ovarian, and cervical cancers. ACTA ACUST UNITED AC 2011; 34:422-6. [PMID: 21934341 DOI: 10.1159/000331131] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND Polymorphisms of the gene encoding methylenetetrahydrofolate reductase (MTHFR) have been studied widely in various cancers, excluding thyroid cancer. However, reports on the association of various polymorphisms with certain cancers are contradictory. MATERIALS AND METHODS We have investigated whether the prevalence of the most common polymorphism (C677T) in the MTHFR gene has any link with various cancers, using genomic DNA and polymerase chain reaction restriction fragment length polymorphism (PCRRFLP) analysis. RESULTS The frequency of the heterozygous variant (677CT) but not that of 677TT was found to be significantly higher in colorectal cancer cases than in controls (p < 0.039; odds ratio 2.35 and 95% confidence interval 1.02-5.415). The frequencies for 677CT were 11.0 and 5.0% in colorectal cancer samples and controls, respectively. In ovarian cancer, the frequency of the 677TT variant was 6.0% which differed significantly (p < 0.026) from the control value of 1.0%. However, the frequencies of the variants in cervical, thyroid, and breast cancer cases did not differ from controls. CONCLUSIONS Our data taken together with other reports indicates that the polymorphism C677T of MTHFR is a risk factor for developing colorectal cancer but not cervical, thyroid, and breast cancers. The present study also reconfirms that frequencies of the variants are not gender-specific.
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Affiliation(s)
- Vidudala V T S Prasad
- Research and Development, Basavatarakam Indo-American Cancer Hospital and Research Institute, Hyderabad, India.
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Uchida Y, Sugiura S, Ando F, Nakashima T, Shimokata H. Hearing impairment risk and interaction of folate metabolism related gene polymorphisms in an aging study. BMC MEDICAL GENETICS 2011; 12:35. [PMID: 21385350 PMCID: PMC3063203 DOI: 10.1186/1471-2350-12-35] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/22/2010] [Accepted: 03/07/2011] [Indexed: 12/31/2022]
Abstract
Background Recent investigations demonstrated many genetic contributions to the development of human age-related hearing impairment (ARHI), however, reports of factors associated with a reduction in the ARHI risk are rare. Folate metabolism is essential for cellular functioning. Despite the extensive investigations regarding the roles of folate metabolism related gene polymorphisms in the pathophysiology of complex diseases, such as cancer, cardio-cerebrovascular disease, and atherosclerosis, little is known about the association with ARHI. The aim of this study is to investigate the effects of the methionine synthase (MTR) A2756G and methylenetetrahydrofolate reductase (MTHFR) C677T gene polymorphisms on the risk of hearing impairment in middle-aged and elderly Japanese. Methods Data were collected from community-dwelling Japanese adults aged 40-84 years who participated in the Longitudinal Study of Aging biennially between 1997 and 2008. We analyzed cumulative data (5,167 samples in accumulated total) using generalized estimating equations. Results The MTHFR 677T allele was significantly associated with a reduced risk of hearing impairment only when the subjects were wild-type homozygotes for MTR A2756G. The per-T allele odds ratio of MTHFR for the risk of developing hearing impairment was 0.7609 (95% CI: 0.6178-0.9372) in the MTR AA genotype. In addition, a subgroup analysis demonstrated that the favorable effect of the MTHFR 677T allele on the risk of developing hearing impairment was independent of folate and homocysteine level, whereas plasma total homocysteine level was independently associated with an increased risk of developing hearing impairment. The interactive effect of gene polymorphisms associated with folate metabolism may modify the risk of developing hearing impairment after middle age. These results contribute to the elucidation of the causes of ARHI. Conclusions The present study has found that the MTHFR 677T allele has a favorable effect on a risk of hearing impairment in the middle-aged and elderly population, only when the individuals were wild-type homozygotes for MTR A2756G.
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Affiliation(s)
- Yasue Uchida
- Department of Otorhinolaryngology, National Center for Geriatrics and Gerontology, 35 Gengo, Morioka, Obu City, Aichi Prefecture 474-8511, Japan.
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Wang J, Wang B, Bi J, Di J. The association between two polymorphisms in the TYMS gene and breast cancer risk: a meta-analysis. Breast Cancer Res Treat 2010; 128:203-9. [PMID: 21188629 DOI: 10.1007/s10549-010-1314-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2010] [Accepted: 12/16/2010] [Indexed: 12/26/2022]
Abstract
Thymidylate synthase (TYMS), which catalyzes the conversion of deoxyuridine monophosphate to deoxythymidine monophosphate, is a central enzyme in the folate metabolic pathway. Epidemiological studies have evaluated the association between TYMS gene polymorphisms and breast cancer susceptibility; however, the published data are still inconclusive. To derive a more precise assessment of this relationship, we performed a meta-analysis based on currently available data by searching PubMed, EMBASE databases, and the Cochrane Library. A total of 10 eligible studies were identified for the TYMS TSER polymorphism (six studies with 2,718 cases and 3,423 controls) and for the TYMS TS3'-UTR polymorphism (five studies with 1,969 cases and 2,290 controls). The overall odds ratio (OR) and the corresponding 95% confidence interval (CI) showed a statistical association between the TSER polymorphism and breast cancer risk under homozygote comparison (2R/2R vs. non-2R/non-2R; OR 1.25; 95% CI 1.04-1.50), allele contrast (2R vs. non-2R; OR 1.09; 95% CI 1.01-1.19) and the recessive model (OR 1.19; 95% CI 1.01-1.39). In the subgroup analysis by ethnicity, a statistically significant increase in cancer risk was found among Caucasians for homozygote comparison (OR 1.31; 95% CI 1.10-1.57), the allele contrast model (OR 1.12; 95% CI 1.02-1.23) and the dominant model (OR 1.40; 95% CI 1.00-1.95). For the TS3'-UTR polymorphism, significant effects were shown using the allele contrast model (OR 1.33; 95% CI 1.03-1.73). However, the TS3'-UTR polymorphism increased breast cancer risk among Asian women (del6 vs. ins6; OR 1.41; 95% CI 1.01-1.98) but not Caucasian women using the homozygote comparison. In conclusion, our meta-analysis suggests that the TSER polymorphism may increase susceptibility to breast cancer in the Caucasian population and the TS3'-UTR polymorphism may be a genetic determinant for developing breast cancer in the Asian population; therefore, ethnic background should be carefully considered in further studies.
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Affiliation(s)
- Jun Wang
- Department of Oncology, General Hospital, Jinan Command of the People's Liberation Army, Tianqiao District, Jinan, 250031, China.
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