1
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Genetic Variants in One-Carbon Metabolism and Their Effects on DHA Biomarkers in Pregnant Women: A Post-Hoc Analysis. Nutrients 2022; 14:nu14183801. [PMID: 36145177 PMCID: PMC9506554 DOI: 10.3390/nu14183801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/05/2022] [Accepted: 09/06/2022] [Indexed: 11/17/2022] Open
Abstract
The delivery of docosahexanoic acid (DHA) to the fetus is dependent on maternal one-carbon metabolism, as the latter supports the hepatic synthesis and export of a DHA-enriched phosphatidylcholine molecule via the phosphatidylethanolamine N-methyltransferase (PEMT) pathway. The following is a post-hoc analysis of a choline intervention study that sought to investigate whether common variants in one-carbon metabolizing genes associate with maternal and/or fetal blood biomarkers of DHA status. Pregnant women entering their second trimester were randomized to consume, until delivery, either 25 (n = 15) or 550 (n = 15) mg choline/d, and the effects of genetic variants in the PEMT, BHMT, MTHFD1, and MTHFR genes on DHA status were examined. Variant (vs. non-variant) maternal PEMT rs4646343 genotypes tended to have lower maternal RBC DHA (% total fatty acids) throughout gestation (6.9% vs. 7.4%; main effect, p = 0.08) and lower cord RBC DHA at delivery (7.6% vs. 8.4%; main effect, p = 0.09). Conversely, variant (vs. non-variant) maternal MTHFD1 rs2235226 genotypes exhibited higher cord RBC DHA (8.3% vs. 7.3%; main effect, p = 0.0003) and higher cord plasma DHA (55 vs. 41 μg/mL; main effect, p = 0.05). Genotype tended to interact with maternal choline intake (p < 0.1) to influence newborn DHA status for PEMT rs4646343 and PEMT rs7946. These data support the need to consider variants in one-carbon metabolic genes in studies assessing DHA status and requirements during pregnancy.
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2
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Do methylenetetrahydrofolate dehydrogenase, cyclohydrolase, and formyltetrahydrofolate synthetase 1 polymorphisms modify changes in intelligence of school-age children in areas of endemic fluorosis? Chin Med J (Engl) 2022; 135:1846-1854. [PMID: 35838408 PMCID: PMC9521762 DOI: 10.1097/cm9.0000000000002062] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Excessive exposure to fluoride can reduce intelligence. Methylenetetrahydrofolate dehydrogenase, cyclohydrolase, and formyltetrahydrofolate synthetase 1 ( MTHFD1 ) polymorphisms have important roles in neurodevelopment. However, the association of MTHFD1 polymorphisms with children's intelligence changes in endemic fluorosis areas has been rarely explored. METHODS A cross-sectional study was conducted in four randomly selected primary schools in Tongxu County, Henan Province, from April to May in 2017. A total of 694 children aged 8 to 12 years were included in the study with the recruitment by the cluster sampling method. Urinary fluoride (UF) and urinary creatinine were separately determined using the fluoride ion-selective electrode and creatinine assay kit. Children were classified as the high fluoride group and control group according to the median of urinary creatinine-adjusted urinary fluoride (UF Cr ) level. Four loci of MTHFD1 were genotyped, and the Combined Raven's Test was used to evaluate children's intelligence quotient (IQ). Generalized linear model and multinomial logistic regression model were performed to analyze the associations between children's UF Cr level, MTHFD1 polymorphisms, and intelligence. The general linear model was used to explore the effects of gene-environment and gene-gene interaction on intelligence. RESULTS In the high fluoride group, children's IQ scores decreased by 2.502 when the UF Cr level increased by 1.0 mg/L (β = -2.502, 95% confidence interval [CI]:-4.411, -0.593), and the possibility for having "excellent" intelligence decreased by 46.3% (odds ratio = 0.537, 95% CI: 0.290, 0.994). Children with the GG genotype showed increased IQ scores than those with the AA genotype of rs11627387 locus in the high fluoride group ( P < 0.05). Interactions between fluoride exposure and MTHFD1 polymorphisms on intelligence were observed (Pinteraction < 0.05). CONCLUSION Our findings suggest that excessive fluoride exposure may have adverse effects on children's intelligence, and changes in children's intelligence may be associated with the interaction between fluoride and MTHFD1 polymorphisms.
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3
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Jones P, Lucock M, Martin C, Thota R, Garg M, Yates Z, Scarlett CJ, Veysey M, Beckett E. Independent and Interactive Influences of Environmental UVR, Vitamin D Levels, and Folate Variant MTHFD1-rs2236225 on Homocysteine Levels. Nutrients 2020; 12:E1455. [PMID: 32443475 PMCID: PMC7284830 DOI: 10.3390/nu12051455] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/11/2020] [Accepted: 05/14/2020] [Indexed: 02/07/2023] Open
Abstract
Elevated homocysteine (Hcy) levels are a risk factor for vascular diseases. Recently, increases in ultraviolet radiation (UVR) have been linked to decreased Hcy levels. This relationship may be mediated by the status of UVR-responsive vitamins, vitamin D and folate, and/or genetic variants influencing their levels; however, this has yet to be examined. Therefore, the independent and interactive influences of environmental UVR, vitamin D and folate levels and related genetic variants on Hcy levels were examined in an elderly Australian cohort (n = 619). Red blood cell folate, 25-hydroxyvitamin D (25(OH)D), and plasma Hcy levels were determined, and genotyping for 21 folate and vitamin D-related variants was performed. Erythemal dose rate accumulated over six-weeks (6W-EDR) and four-months (4M-EDR) prior to clinics were calculated as a measure of environmental UVR. Multivariate analyses found interactions between 6W-EDR and 25(OH)D levels (pinteraction = 0.002), and 4M-EDR and MTHFD1-rs2236225 (pinteraction = 0.006) in predicting Hcy levels. The association between 6W-EDR and Hcy levels was found only in subjects within lower 25(OH)D quartiles (<33.26 ng/mL), with the association between 4M-EDR and Hcy occurring only in subjects carrying the MTHFD1-rs2236225 variant. 4M-EDR, 6W-EDR, and MTHFD1-rs2236225 were also independent predictors of Hcy. Findings highlight nutrient-environment and gene-environment interactions that could influence the risk of Hcy-related outcomes.
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Affiliation(s)
- Patrice Jones
- School of Environmental & Life Sciences, University of Newcastle, Ourimbah, NSW 2258, Australia; (M.L.); (C.M.); (C.J.S.); (E.B.)
- Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia
| | - Mark Lucock
- School of Environmental & Life Sciences, University of Newcastle, Ourimbah, NSW 2258, Australia; (M.L.); (C.M.); (C.J.S.); (E.B.)
| | - Charlotte Martin
- School of Environmental & Life Sciences, University of Newcastle, Ourimbah, NSW 2258, Australia; (M.L.); (C.M.); (C.J.S.); (E.B.)
| | - Rohith Thota
- Nutraceuticals Research Group, University of Newcastle, Callaghan, NSW 2308, Australia; (R.T.); (M.G.)
- Riddet Institute, Massey University, Palmerston North 4442, New Zealand
| | - Manohar Garg
- Nutraceuticals Research Group, University of Newcastle, Callaghan, NSW 2308, Australia; (R.T.); (M.G.)
| | - Zoe Yates
- Biomedical Sciences & Pharmacy, University of Newcastle, Callaghan, NSW 2308, Australia;
| | - Christopher J. Scarlett
- School of Environmental & Life Sciences, University of Newcastle, Ourimbah, NSW 2258, Australia; (M.L.); (C.M.); (C.J.S.); (E.B.)
| | - Martin Veysey
- Hull-York Medical School, University of Hull, Hull YO10 5DD, UK;
| | - Emma Beckett
- School of Environmental & Life Sciences, University of Newcastle, Ourimbah, NSW 2258, Australia; (M.L.); (C.M.); (C.J.S.); (E.B.)
- Hunter Medical Research Institute, New Lambton Heights, NSW 2305, Australia
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4
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Dysregulation of multiple metabolic networks related to brain transmethylation and polyamine pathways in Alzheimer disease: A targeted metabolomic and transcriptomic study. PLoS Med 2020; 17:e1003012. [PMID: 31978055 PMCID: PMC6980402 DOI: 10.1371/journal.pmed.1003012] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 12/20/2019] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND There is growing evidence that Alzheimer disease (AD) is a pervasive metabolic disorder with dysregulation in multiple biochemical pathways underlying its pathogenesis. Understanding how perturbations in metabolism are related to AD is critical to identifying novel targets for disease-modifying therapies. In this study, we test whether AD pathogenesis is associated with dysregulation in brain transmethylation and polyamine pathways. METHODS AND FINDINGS We first performed targeted and quantitative metabolomics assays using capillary electrophoresis-mass spectrometry (CE-MS) on brain samples from three groups in the Baltimore Longitudinal Study of Aging (BLSA) (AD: n = 17; Asymptomatic AD [ASY]: n = 13; Control [CN]: n = 13) (overall 37.2% female; mean age at death 86.118 ± 9.842 years) in regions both vulnerable and resistant to AD pathology. Using linear mixed-effects models within two primary brain regions (inferior temporal gyrus [ITG] and middle frontal gyrus [MFG]), we tested associations between brain tissue concentrations of 26 metabolites and the following primary outcomes: group differences, Consortium to Establish a Registry for Alzheimer's Disease (CERAD) (neuritic plaque burden), and Braak (neurofibrillary pathology) scores. We found significant alterations in concentrations of metabolites in AD relative to CN samples, as well as associations with severity of both CERAD and Braak, mainly in the ITG. These metabolites represented biochemical reactions in the (1) methionine cycle (choline: lower in AD, p = 0.003; S-adenosyl methionine: higher in AD, p = 0.005); (2) transsulfuration and glutathione synthesis (cysteine: higher in AD, p < 0.001; reduced glutathione [GSH]: higher in AD, p < 0.001); (3) polyamine synthesis/catabolism (spermidine: higher in AD, p = 0.004); (4) urea cycle (N-acetyl glutamate: lower in AD, p < 0.001); (5) glutamate-aspartate metabolism (N-acetyl aspartate: lower in AD, p = 0.002); and (6) neurotransmitter metabolism (gamma-amino-butyric acid: lower in AD, p < 0.001). Utilizing three Gene Expression Omnibus (GEO) datasets, we then examined mRNA expression levels of 71 genes encoding enzymes regulating key reactions within these pathways in the entorhinal cortex (ERC; AD: n = 25; CN: n = 52) and hippocampus (AD: n = 29; CN: n = 56). Complementing our metabolomics results, our transcriptomics analyses also revealed significant alterations in gene expression levels of key enzymatic regulators of biochemical reactions linked to transmethylation and polyamine metabolism. Our study has limitations: our metabolomics assays measured only a small proportion of all metabolites participating in the pathways we examined. Our study is also cross-sectional, limiting our ability to directly test how AD progression may impact changes in metabolite concentrations or differential-gene expression. Additionally, the relatively small number of brain tissue samples may have limited our power to detect alterations in all pathway-specific metabolites and their genetic regulators. CONCLUSIONS In this study, we observed broad dysregulation of transmethylation and polyamine synthesis/catabolism, including abnormalities in neurotransmitter signaling, urea cycle, aspartate-glutamate metabolism, and glutathione synthesis. Our results implicate alterations in cellular methylation potential and increased flux in the transmethylation pathways, increased demand on antioxidant defense mechanisms, perturbations in intermediate metabolism in the urea cycle and aspartate-glutamate pathways disrupting mitochondrial bioenergetics, increased polyamine biosynthesis and breakdown, as well as abnormalities in neurotransmitter metabolism that are related to AD.
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5
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Lin Y, Yu J, Wu J, Wang S, Zhang T. Abnormal level of CUL4B-mediated histone H2A ubiquitination causes disruptive HOX gene expression. Epigenetics Chromatin 2019; 12:22. [PMID: 30992047 PMCID: PMC6466687 DOI: 10.1186/s13072-019-0268-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 04/04/2019] [Indexed: 12/17/2022] Open
Abstract
Background Neural tube defects (NTDs) are common birth defects involving the central nervous system. Recent studies on the etiology of human NTDs have raised the possibility that epigenetic regulation could be involved in determining susceptibility to them. Results Here, we show that the H2AK119ub1 E3 ligase CUL4B is required for the activation of retinoic acid (RA)-inducible developmentally critical homeobox (HOX) genes in NT2/D1 embryonal carcinoma cells. RA treatment led to attenuation of H2AK119ub1 due to decrease in CUL4B, further affecting HOX gene regulation. Furthermore, we found that CUL4B interacted directly with RORγ and negatively regulated its transcriptional activity. Interestingly, knockdown of RORγ decreased the expression of HOX genes along with increased H2AK119ub1 occupancy levels, at HOX gene sites in N2/D1 cells. In addition, upregulation of HOX genes was observed along with lower levels of CUL4B-mediated H2AK119ub1 in both mouse and human anencephaly NTD cases. Notably, the expression of HOXA10 genes was negatively correlated with CUL4B levels in human anencephaly NTD cases. Conclusions Our results indicate that abnormal HOX gene expression induced by aberrant CUL4B-mediated H2AK119ub1 levels may be a risk factor for NTDs, and highlight the need for further analysis of genome-wide epigenetic modifications in NTDs. Electronic supplementary material The online version of this article (10.1186/s13072-019-0268-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ye Lin
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, 100020, China.,Graduate Schools of Peking Union Medical College, Beijing, 100730, China
| | - Juan Yu
- Department of Biochemistry and Molecular Biology, Shanxi Medical University, Taiyuan, 030001, Shanxi, China
| | - Jianxin Wu
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, 100020, China.,Graduate Schools of Peking Union Medical College, Beijing, 100730, China
| | - Shan Wang
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, 100020, China. .,Institute of Basic Medical Sciences, Chinese Academy of Medical Science, Beijing, 100730, China.
| | - Ting Zhang
- Beijing Municipal Key Laboratory of Child Development and Nutriomics, Capital Institute of Pediatrics, Beijing, 100020, China. .,Graduate Schools of Peking Union Medical College, Beijing, 100730, China.
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6
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Pjetri E, Zeisel SH. Deletion of one allele of Mthfd1 ( methylenetetrahydrofolate dehydrogenase 1 ) impairs learning in mice. Behav Brain Res 2017; 332:71-74. [DOI: 10.1016/j.bbr.2017.05.051] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 05/16/2017] [Accepted: 05/22/2017] [Indexed: 11/28/2022]
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7
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Kamynina E, Lachenauer ER, DiRisio AC, Liebenthal RP, Field MS, Stover PJ. Arsenic trioxide targets MTHFD1 and SUMO-dependent nuclear de novo thymidylate biosynthesis. Proc Natl Acad Sci U S A 2017; 114:E2319-E2326. [PMID: 28265077 PMCID: PMC5373342 DOI: 10.1073/pnas.1619745114] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Arsenic exposure increases risk for cancers and is teratogenic in animal models. Here we demonstrate that small ubiquitin-like modifier (SUMO)- and folate-dependent nuclear de novo thymidylate (dTMP) biosynthesis is a sensitive target of arsenic trioxide (As2O3), leading to uracil misincorporation into DNA and genome instability. Methylenetetrahydrofolate dehydrogenase 1 (MTHFD1) and serine hydroxymethyltransferase (SHMT) generate 5,10-methylenetetrahydrofolate for de novo dTMP biosynthesis and translocate to the nucleus during S-phase, where they form a multienzyme complex with thymidylate synthase (TYMS) and dihydrofolate reductase (DHFR), as well as the components of the DNA replication machinery. As2O3 exposure increased MTHFD1 SUMOylation in cultured cells and in in vitro SUMOylation reactions, and increased MTHFD1 ubiquitination and MTHFD1 and SHMT1 degradation. As2O3 inhibited de novo dTMP biosynthesis in a dose-dependent manner, increased uracil levels in nuclear DNA, and increased genome instability. These results demonstrate that MTHFD1 and SHMT1, which are key enzymes providing one-carbon units for dTMP biosynthesis in the form of 5,10-methylenetetrahydrofolate, are direct targets of As2O3-induced proteolytic degradation, providing a mechanism for arsenic in the etiology of cancer and developmental anomalies.
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Affiliation(s)
- Elena Kamynina
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853
| | - Erica R Lachenauer
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853
- Graduate Field of Biology and Biomedical Sciences, Cornell University, Ithaca, NY 14853
| | - Aislyn C DiRisio
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853
| | | | - Martha S Field
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853
| | - Patrick J Stover
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853;
- Graduate Field of Biology and Biomedical Sciences, Cornell University, Ithaca, NY 14853
- Graduate Field of Biochemistry, Molecular and Cell Biology, Cornell University, Ithaca, NY 14853
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8
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High-throughput method for the quantitation of metabolites and co-factors from homocysteine-methionine cycle for nutritional status assessment. Bioanalysis 2017; 8:1937-49. [PMID: 27558871 DOI: 10.4155/bio-2016-0112] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
AIM There is increasing interest in the profiling and quantitation of methionine pathway metabolites for health management research. Currently, several analytical approaches are required to cover metabolites and co-factors. RESULTS We report the development and the validation of a method for the simultaneous detection and quantitation of 13 metabolites in red blood cells. The method, validated in a cohort of healthy human volunteers, shows a high level of accuracy and reproducibility. CONCLUSION This high-throughput protocol provides a robust coverage of central metabolites and co-factors in one single analysis and in a high-throughput fashion. In large-scale clinical settings, the use of such an approach will significantly advance the field of nutritional research in health and disease.
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9
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Ding Y, Pedersen ER, Svingen GF, Helgeland Ø, Gregory JF, Løland KH, Meyer K, Tell GS, Ueland PM, Nygård OK. Methylenetetrahydrofolate Dehydrogenase 1 Polymorphisms Modify the Associations of Plasma Glycine and Serine With Risk of Acute Myocardial Infarction in Patients With Stable Angina Pectoris in WENBIT (Western Norway B Vitamin Intervention Trial). ACTA ACUST UNITED AC 2016; 9:541-547. [DOI: 10.1161/circgenetics.116.001483] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Accepted: 10/21/2016] [Indexed: 02/07/2023]
Abstract
Background—
Serine and glycine interconversion and methylenetetrahydrofolate dehydrogenase 1 (MTHFD1)–mediated 1-carbon transfer are the major sources of methyl groups for 1-carbon metabolism. Recently, plasma glycine and a common polymorphism in MTHFD1 have been associated with risk of acute myocardial infarction (AMI). It is, therefore, of interest to explore if these 2 pathways interact in relation to AMI.
Methods and Results—
A total of 2571 participants in the WENBIT (Western Norway B Vitamin Intervention Trial) undergoing coronary angiography for stable angina pectoris were studied. Associations of plasma serine and glycine concentrations with risk of AMI across 2 common and functional MTHFD1 polymorphisms (
rs2236225
and
rs1076991
) were explored in Cox regression models. During a median follow-up of 4.7 years, 212 patients (8.2%) experienced an AMI. In age- and sex-adjusted analyses, plasma glycine (
P
<0.01), but not serine (
P
=0.52), showed an overall association with AMI. However, interactions of MTHFD1
rs2236225
polymorphism with both plasma serine and glycine were observed (
P
interaction
=0.03 for both). Low plasma serine and glycine were associated with an increased risk of AMI among patients carrying the
rs2236225
minor A allele. Similarly, low plasma glycine showed stronger risk relationship with AMI in the
rs1076991
CC genotype carriers but weaker associations in patients carrying the minor T allele (
P
interaction
=0.02).
Conclusions—
Our results showed that 2 common and functional polymorphisms in the
MTHFD1
gene modulate the risk associations of plasma serine and glycine with AMI. These findings emphasize the possible role of the MTHFD1 in regulating serine and glycine metabolism in relation to atherosclerotic complications.
Clinical Trial Registration—
URL:
http://www.clinicaltrials.gov
. Unique Identifier: NCT00354081.
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Affiliation(s)
- Yunpeng Ding
- From the Department of Clinical Science (Y.D., E.R.P., P.M.U., O.K.N.), KG Jebsen Center for Diabetes Research, Department of Clinical Science (Ø.H., O.K.N.), and Department of Global Public Health and Primary Care (G.S.T.), University of Bergen, Norway; Department of Heart Disease (G.F.T.S., K.H.L., O.K.N.) and Department of Pediatrics (Ø.H.), Haukeland University Hospital, Bergen, Norway; Laboratory of Clinical Biochemistry, Bergen, Norway (P.M.U.); Food Science and Human Nutrition Department,
| | - Eva R. Pedersen
- From the Department of Clinical Science (Y.D., E.R.P., P.M.U., O.K.N.), KG Jebsen Center for Diabetes Research, Department of Clinical Science (Ø.H., O.K.N.), and Department of Global Public Health and Primary Care (G.S.T.), University of Bergen, Norway; Department of Heart Disease (G.F.T.S., K.H.L., O.K.N.) and Department of Pediatrics (Ø.H.), Haukeland University Hospital, Bergen, Norway; Laboratory of Clinical Biochemistry, Bergen, Norway (P.M.U.); Food Science and Human Nutrition Department,
| | - Gard F.T. Svingen
- From the Department of Clinical Science (Y.D., E.R.P., P.M.U., O.K.N.), KG Jebsen Center for Diabetes Research, Department of Clinical Science (Ø.H., O.K.N.), and Department of Global Public Health and Primary Care (G.S.T.), University of Bergen, Norway; Department of Heart Disease (G.F.T.S., K.H.L., O.K.N.) and Department of Pediatrics (Ø.H.), Haukeland University Hospital, Bergen, Norway; Laboratory of Clinical Biochemistry, Bergen, Norway (P.M.U.); Food Science and Human Nutrition Department,
| | - Øyvind Helgeland
- From the Department of Clinical Science (Y.D., E.R.P., P.M.U., O.K.N.), KG Jebsen Center for Diabetes Research, Department of Clinical Science (Ø.H., O.K.N.), and Department of Global Public Health and Primary Care (G.S.T.), University of Bergen, Norway; Department of Heart Disease (G.F.T.S., K.H.L., O.K.N.) and Department of Pediatrics (Ø.H.), Haukeland University Hospital, Bergen, Norway; Laboratory of Clinical Biochemistry, Bergen, Norway (P.M.U.); Food Science and Human Nutrition Department,
| | - Jesse F. Gregory
- From the Department of Clinical Science (Y.D., E.R.P., P.M.U., O.K.N.), KG Jebsen Center for Diabetes Research, Department of Clinical Science (Ø.H., O.K.N.), and Department of Global Public Health and Primary Care (G.S.T.), University of Bergen, Norway; Department of Heart Disease (G.F.T.S., K.H.L., O.K.N.) and Department of Pediatrics (Ø.H.), Haukeland University Hospital, Bergen, Norway; Laboratory of Clinical Biochemistry, Bergen, Norway (P.M.U.); Food Science and Human Nutrition Department,
| | - Kjetil H. Løland
- From the Department of Clinical Science (Y.D., E.R.P., P.M.U., O.K.N.), KG Jebsen Center for Diabetes Research, Department of Clinical Science (Ø.H., O.K.N.), and Department of Global Public Health and Primary Care (G.S.T.), University of Bergen, Norway; Department of Heart Disease (G.F.T.S., K.H.L., O.K.N.) and Department of Pediatrics (Ø.H.), Haukeland University Hospital, Bergen, Norway; Laboratory of Clinical Biochemistry, Bergen, Norway (P.M.U.); Food Science and Human Nutrition Department,
| | - Klaus Meyer
- From the Department of Clinical Science (Y.D., E.R.P., P.M.U., O.K.N.), KG Jebsen Center for Diabetes Research, Department of Clinical Science (Ø.H., O.K.N.), and Department of Global Public Health and Primary Care (G.S.T.), University of Bergen, Norway; Department of Heart Disease (G.F.T.S., K.H.L., O.K.N.) and Department of Pediatrics (Ø.H.), Haukeland University Hospital, Bergen, Norway; Laboratory of Clinical Biochemistry, Bergen, Norway (P.M.U.); Food Science and Human Nutrition Department,
| | - Grethe S. Tell
- From the Department of Clinical Science (Y.D., E.R.P., P.M.U., O.K.N.), KG Jebsen Center for Diabetes Research, Department of Clinical Science (Ø.H., O.K.N.), and Department of Global Public Health and Primary Care (G.S.T.), University of Bergen, Norway; Department of Heart Disease (G.F.T.S., K.H.L., O.K.N.) and Department of Pediatrics (Ø.H.), Haukeland University Hospital, Bergen, Norway; Laboratory of Clinical Biochemistry, Bergen, Norway (P.M.U.); Food Science and Human Nutrition Department,
| | - Per M. Ueland
- From the Department of Clinical Science (Y.D., E.R.P., P.M.U., O.K.N.), KG Jebsen Center for Diabetes Research, Department of Clinical Science (Ø.H., O.K.N.), and Department of Global Public Health and Primary Care (G.S.T.), University of Bergen, Norway; Department of Heart Disease (G.F.T.S., K.H.L., O.K.N.) and Department of Pediatrics (Ø.H.), Haukeland University Hospital, Bergen, Norway; Laboratory of Clinical Biochemistry, Bergen, Norway (P.M.U.); Food Science and Human Nutrition Department,
| | - Ottar K. Nygård
- From the Department of Clinical Science (Y.D., E.R.P., P.M.U., O.K.N.), KG Jebsen Center for Diabetes Research, Department of Clinical Science (Ø.H., O.K.N.), and Department of Global Public Health and Primary Care (G.S.T.), University of Bergen, Norway; Department of Heart Disease (G.F.T.S., K.H.L., O.K.N.) and Department of Pediatrics (Ø.H.), Haukeland University Hospital, Bergen, Norway; Laboratory of Clinical Biochemistry, Bergen, Norway (P.M.U.); Food Science and Human Nutrition Department,
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10
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Guiraud SP, Montoliu I, Da Silva L, Dayon L, Galindo AN, Corthésy J, Kussmann M, Martin FP. High-throughput and simultaneous quantitative analysis of homocysteine-methionine cycle metabolites and co-factors in blood plasma and cerebrospinal fluid by isotope dilution LC-MS/MS. Anal Bioanal Chem 2016; 409:295-305. [PMID: 27757515 PMCID: PMC5203846 DOI: 10.1007/s00216-016-0003-1] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 08/30/2016] [Accepted: 10/04/2016] [Indexed: 01/04/2023]
Abstract
The methionine cycle is a key pathway contributing to the regulation of human health, with well-established involvement in cardiovascular diseases and cognitive function. Changes in one-carbon cycle metabolites have also been associated with mild cognitive decline, vascular dementia, and Alzheimer's disease. Today, there is no single analytical method to monitor both metabolites and co-factors of the methionine cycle. To address this limitation, we here report for the first time a new method for the simultaneous quantitation of 17 metabolites in the methionine cycle, which are homocysteic acid, taurine, serine, cysteine, glycine, homocysteine, riboflavin, methionine, pyridoxine, cystathionine, pyridoxamine, S-adenosylhomocysteine, S-adenosylmethionine, betaine, choline, dimethylglycine, and 5-methyltetrahydrofolic acid. This multianalyte method, developed using ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS), provides a highly accurate and precise quantitation of these 17 metabolites for both plasma and cerebrospinal fluid metabolite monitoring. The method requires a simple sample preparation, which, combined with a short chromatographic run time, ensures a high sample throughput. This analytical strategy will thus provide a novel metabolomics approach to be employed in large-scale observational and intervention studies. We expect such a robust method to be particularly relevant for broad and deep molecular phenotyping of individuals in relation to their nutritional requirements, health monitoring, and disease risk management.
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Affiliation(s)
- Seu Ping Guiraud
- Nestlé Institute of Health Sciences SA, Campus EPFL, Innovation Park, CH-1015, Lausanne, Switzerland.
| | - Ivan Montoliu
- Nestlé Institute of Health Sciences SA, Campus EPFL, Innovation Park, CH-1015, Lausanne, Switzerland
| | - Laeticia Da Silva
- Nestlé Institute of Health Sciences SA, Campus EPFL, Innovation Park, CH-1015, Lausanne, Switzerland
| | - Loïc Dayon
- Nestlé Institute of Health Sciences SA, Campus EPFL, Innovation Park, CH-1015, Lausanne, Switzerland
| | - Antonio Núñez Galindo
- Nestlé Institute of Health Sciences SA, Campus EPFL, Innovation Park, CH-1015, Lausanne, Switzerland
| | - John Corthésy
- Nestlé Institute of Health Sciences SA, Campus EPFL, Innovation Park, CH-1015, Lausanne, Switzerland
| | - Martin Kussmann
- Nestlé Institute of Health Sciences SA, Campus EPFL, Innovation Park, CH-1015, Lausanne, Switzerland
| | - Francois-Pierre Martin
- Nestlé Institute of Health Sciences SA, Campus EPFL, Innovation Park, CH-1015, Lausanne, Switzerland
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11
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Prasoona KR, Sunitha T, Srinadh B, Deepika MLN, Kumari TM, Jyothy A. Paternal transmission of MTHFD1 G1958A variant predisposes to neural tube defects in the offspring. Dev Med Child Neurol 2016; 58:625-31. [PMID: 26394717 DOI: 10.1111/dmcn.12929] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/16/2015] [Indexed: 01/15/2023]
Abstract
AIM This study aimed to evaluate the role of methylenetetrahydrofolate dehydrogenase (MTHFD1) G1958A variant (rs2236225) as a 'maternal, paternal, or embryonic' genetic risk factor for neural tube defect (NTD) susceptibility. It also estimated differential associations based on type of NTD, offspring sex, maternal-paternal-offspring genotype incompatibility, and parent-of-origin effects (POE) using both case-control and family-based approach. In addition, genotype impact on serum folate levels was also assessed. METHOD The study population (n=900) consisted of 120 NTD case-parent triads (n=120×3=360) and 180 healthy control-parent triads (n=180×3=540) from South India. Umbilical cord tissues were collected from those with NTD and control newborn infants, and blood samples from case and control parents. Genotyping was performed by polymerase chain reaction-restriction fragment length polymorphism. Statistical analysis used were SPSS, transmission disequilibrium test and POE. Serum folate levels were estimated using enzyme-linked immunosorbent assay. RESULTS In the case-control study, those with the MTHFD1 G1958A variant were associated with around twofold risk of anencephaly (p=0.01) and spina bifida (p<0.01). Among parents, fathers were associated with around twofold risk of having an offspring with anencephaly (p<0.01). Considering offspring sex, the A allele in single or double dose conferred around two- to fourfold risk of anencephaly (p=0.01), spina bifida (p<0.01), and encephalocele (p<0.05) in females only. Maternal AA genotype was not associated independently but conferred threefold risk when combined with paternal GA genotype (p=0.01). Transmission disequilibrium and POE were not observed in controls (p>0.05) but revealed excess total (odds ratio [OR]=2.21; p<0.01) and paternal transmission (OR=7.00; p<0.01) of the G1958A allele to those with spina bifida, which remained the same for female cases (total transmission OR=3.00, p=0.01; paternal transmission OR=12.00, p<0.01). Increased serum folate levels were observed in case fathers with GA and AA genotypes than control fathers (p<0.01). INTERPRETATION Our research provides the first evidence supporting a paternal, rather than a maternal, transmission bias of MTHFD1 G1958A variant for NTD susceptibility in the offspring.
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Affiliation(s)
- Kattekola R Prasoona
- Institute of Genetics and Hospital for Genetic Diseases, Osmania University, Hyderabad, Telangana, India
| | - Tella Sunitha
- Institute of Genetics and Hospital for Genetic Diseases, Osmania University, Hyderabad, Telangana, India
| | - Buragadda Srinadh
- Institute of Genetics and Hospital for Genetic Diseases, Osmania University, Hyderabad, Telangana, India
| | - Madireddy L N Deepika
- Institute of Genetics and Hospital for Genetic Diseases, Osmania University, Hyderabad, Telangana, India
| | | | - Akka Jyothy
- Institute of Genetics and Hospital for Genetic Diseases, Osmania University, Hyderabad, Telangana, India
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12
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Ding YP, Pedersen EKR, Johansson S, Gregory JF, Ueland PM, Svingen GFT, Helgeland Ø, Meyer K, Fredriksen Å, Nygård OK. B vitamin treatments modify the risk of myocardial infarction associated with a MTHFD1 polymorphism in patients with stable angina pectoris. Nutr Metab Cardiovasc Dis 2016; 26:495-501. [PMID: 26803590 DOI: 10.1016/j.numecd.2015.12.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 11/24/2015] [Accepted: 12/15/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND Methylenetetrahydrofolate dehydrogenase (MTHFD1) catalyzes three sequential reactions that metabolize derivatives of tetrahydrofolate (THF) in folate-dependent one-carbon metabolism. Impaired MTHFD1 flux has been linked to disturbed lipid metabolism and oxidative stress. However, limited information is available on its relation to the development of atherothrombotic cardiovascular disease. METHODS AND RESULTS We explored the association between a MTHFD1 polymorphism (rs1076991 C > T) and acute myocardial infarction (AMI), and potential effect modifications by folic acid/B12 and/or vitamin B6 treatment in suspected stable angina pectoris patients (n = 2381) participating in the randomized Western Norway B Vitamin Intervention Trial (WENBIT). During the median follow-up of 4.9 years 204 participants (8.6%) suffered an AMI. After adjusting for established CVD risk factors, the MTHFD1 polymorphism was significantly associated with AMI (HR: 1.49; 95% CI, 1.23-1.81). A similar association was observed among patients allocated to treatment with vitamin B6 alone (HR: 1.53; 95% CI, 1.01-2.31), and an even stronger relationship was seen in patients treated with both vitamin B6 and folic acid/B12 (HR: 2.35; 95% CI, 1.55-3.57). However, no risk association between the MTHFD1 polymorphism and AMI was seen in patients treated with placebo (HR: 1.29; 95% CI, 0.86-1.93) or folic acid/B12 (1.17; 95% CI, 0.83-1.65). CONCLUSION A common and functional MTHFD1 polymorphism is associated with increased risk of AMI, although the risk seems to be dependent on specific B vitamin treatment. Further studies are warranted to elucidate the possible mechanisms, also in order to explore potential effect modifications by nutritional factors.
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Affiliation(s)
- Y P Ding
- Department of Clinical Science, University of Bergen, Bergen 5021, Norway.
| | - E K R Pedersen
- Department of Clinical Science, University of Bergen, Bergen 5021, Norway
| | - S Johansson
- Department of Clinical Science, University of Bergen, Bergen 5021, Norway; Center for Medical Genetics and Molecular Medicine, Haukeland University Hospital, Bergen 5021, Norway
| | - J F Gregory
- Food Science and Human Nutrition Department, University of Florida, Gainesville, FL 32611, USA
| | - P M Ueland
- Department of Clinical Science, University of Bergen, Bergen 5021, Norway; Laboratory of Clinical Biochemistry, Haukeland University Hospital, Bergen 5021, Norway
| | - G F T Svingen
- Department of Clinical Science, University of Bergen, Bergen 5021, Norway
| | - Ø Helgeland
- Department of Clinical Science, University of Bergen, Bergen 5021, Norway
| | - K Meyer
- Bevital AS, Bergen 5020, Norway
| | - Å Fredriksen
- Department of Clinical Science, University of Bergen, Bergen 5021, Norway
| | - O K Nygård
- Department of Clinical Science, University of Bergen, Bergen 5021, Norway; Department of Heart Disease, Haukeland University Hospital, Bergen 5021, Norway; KG Jebsen Center for Diabetes Research, Haukeland University Hospital, Bergen 5021, Norway
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13
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Field MS, Kamynina E, Stover PJ. MTHFD1 regulates nuclear de novo thymidylate biosynthesis and genome stability. Biochimie 2016; 126:27-30. [PMID: 26853819 DOI: 10.1016/j.biochi.2016.02.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2016] [Accepted: 02/02/2016] [Indexed: 11/16/2022]
Abstract
Disruptions in folate-mediated one-carbon metabolism (FOCM) are associated with risk for several pathologies including developmental anomalies such as neural tube defects and congenital heart defects, diseases of aging including cognitive decline, neurodegeneration and epithelial cancers, and hematopoietic disorders including megaloblastic anemia. However, the causal pathways and mechanisms that underlie these pathologies remain unresolved. Because folate-dependent anabolic pathways are tightly interconnected and best described as a metabolic network, the identification of causal pathways and associated mechanisms of pathophysiology remains a major challenge in identifying the contribution of individual pathways to disease phenotypes. Investigations of genetic mouse models and human inborn errors of metabolism enable a more precise dissection of the pathways that constitute the FOCM network and enable elucidation of causal pathways associated with NTDs. In this overview, we summarize recent evidence that the enzyme MTHFD1 plays an essential role in FOCM in humans and in mice, and that it determines the partitioning of folate-activated one carbon units between the folate-dependent de novo thymidylate and homocysteine remethylation pathways through its regulated nuclear localization. We demonstrate that impairments in MTHFD1 activity compromise both homocysteine remethylation and de novo thymidylate biosynthesis, and provide evidence that MTHFD1-associated disruptions in de novo thymidylate biosynthesis lead to genome instability that may underlie folate-associated immunodeficiency and birth defects.
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Affiliation(s)
- Martha S Field
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Elena Kamynina
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Patrick J Stover
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA; Graduate Field of Biochemistry, Molecular and Cell Biology, Cornell University, Ithaca, NY 14853, USA.
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14
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Silver MJ, Corbin KD, Hellenthal G, da Costa KA, Dominguez-Salas P, Moore SE, Owen J, Prentice AM, Hennig BJ, Zeisel SH. Evidence for negative selection of gene variants that increase dependence on dietary choline in a Gambian cohort. FASEB J 2015; 29:3426-35. [PMID: 25921832 PMCID: PMC4511208 DOI: 10.1096/fj.15-271056] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 04/16/2015] [Indexed: 01/26/2023]
Abstract
Choline is an essential nutrient, and the amount needed in the diet is modulated by
several factors. Given geographical differences in dietary choline intake and
disparate frequencies of single-nucleotide polymorphisms (SNPs) in choline metabolism
genes between ethnic groups, we tested the hypothesis that 3 SNPs that increase
dependence on dietary choline would be under negative selection pressure in settings
where choline intake is low: choline dehydrogenase (CHDH) rs12676,
methylenetetrahydrofolate reductase 1 (MTHFD1) rs2236225, and
phosphatidylethanolamine-N-methyltransferase
(PEMT) rs12325817. Evidence of negative selection was assessed in
2 populations: one in The Gambia, West Africa, where there is historic evidence of a
choline-poor diet, and the other in the United States, with a comparatively
choline-rich diet. We used 2 independent methods, and confirmation of our hypothesis
was sought via a comparison with SNP data from the Maasai, an East
African population with a genetic background similar to that of Gambians but with a
traditional diet that is higher in choline. Our results show that frequencies of SNPs
known to increase dependence on dietary choline are significantly reduced in the
low-choline setting of The Gambia. Our findings suggest that adequate intake levels
of choline may have to be reevaluated in different ethnic groups and highlight a
possible approach for identifying novel functional SNPs under the influence of
dietary selective pressure.—Silver, M. J., Corbin, K. D., Hellenthal, G., da
Costa, K.-A., Dominguez-Salas, P., Moore, S. E., Owen, J., Prentice, A. M., Hennig,
B. J., Zeisel, S. H. Evidence for negative selection of gene variants that increase
dependence on dietary choline in a Gambian cohort.
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Affiliation(s)
- Matt J Silver
- *Medical Research Council International Nutrition Group, London School of Hygiene and Tropical Medicine, London, United Kingdom; Medical Research Council Unit, Banjul, The Gambia; Nutrition Research Institute, North Carolina Research Campus, Kannapolis, North Carolina, USA; Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; University College London Genetics Institute, University College London, United Kingdom; Toxicology Services, Incorporated, Chapel Hill, North Carolina, USA; and Maternal and Child Nutrition Group, Medical Research Council Human Nutrition Research, Cambridge, United Kingdom
| | - Karen D Corbin
- *Medical Research Council International Nutrition Group, London School of Hygiene and Tropical Medicine, London, United Kingdom; Medical Research Council Unit, Banjul, The Gambia; Nutrition Research Institute, North Carolina Research Campus, Kannapolis, North Carolina, USA; Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; University College London Genetics Institute, University College London, United Kingdom; Toxicology Services, Incorporated, Chapel Hill, North Carolina, USA; and Maternal and Child Nutrition Group, Medical Research Council Human Nutrition Research, Cambridge, United Kingdom
| | - Garrett Hellenthal
- *Medical Research Council International Nutrition Group, London School of Hygiene and Tropical Medicine, London, United Kingdom; Medical Research Council Unit, Banjul, The Gambia; Nutrition Research Institute, North Carolina Research Campus, Kannapolis, North Carolina, USA; Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; University College London Genetics Institute, University College London, United Kingdom; Toxicology Services, Incorporated, Chapel Hill, North Carolina, USA; and Maternal and Child Nutrition Group, Medical Research Council Human Nutrition Research, Cambridge, United Kingdom
| | - Kerry-Ann da Costa
- *Medical Research Council International Nutrition Group, London School of Hygiene and Tropical Medicine, London, United Kingdom; Medical Research Council Unit, Banjul, The Gambia; Nutrition Research Institute, North Carolina Research Campus, Kannapolis, North Carolina, USA; Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; University College London Genetics Institute, University College London, United Kingdom; Toxicology Services, Incorporated, Chapel Hill, North Carolina, USA; and Maternal and Child Nutrition Group, Medical Research Council Human Nutrition Research, Cambridge, United Kingdom
| | - Paula Dominguez-Salas
- *Medical Research Council International Nutrition Group, London School of Hygiene and Tropical Medicine, London, United Kingdom; Medical Research Council Unit, Banjul, The Gambia; Nutrition Research Institute, North Carolina Research Campus, Kannapolis, North Carolina, USA; Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; University College London Genetics Institute, University College London, United Kingdom; Toxicology Services, Incorporated, Chapel Hill, North Carolina, USA; and Maternal and Child Nutrition Group, Medical Research Council Human Nutrition Research, Cambridge, United Kingdom
| | - Sophie E Moore
- *Medical Research Council International Nutrition Group, London School of Hygiene and Tropical Medicine, London, United Kingdom; Medical Research Council Unit, Banjul, The Gambia; Nutrition Research Institute, North Carolina Research Campus, Kannapolis, North Carolina, USA; Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; University College London Genetics Institute, University College London, United Kingdom; Toxicology Services, Incorporated, Chapel Hill, North Carolina, USA; and Maternal and Child Nutrition Group, Medical Research Council Human Nutrition Research, Cambridge, United Kingdom
| | - Jennifer Owen
- *Medical Research Council International Nutrition Group, London School of Hygiene and Tropical Medicine, London, United Kingdom; Medical Research Council Unit, Banjul, The Gambia; Nutrition Research Institute, North Carolina Research Campus, Kannapolis, North Carolina, USA; Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; University College London Genetics Institute, University College London, United Kingdom; Toxicology Services, Incorporated, Chapel Hill, North Carolina, USA; and Maternal and Child Nutrition Group, Medical Research Council Human Nutrition Research, Cambridge, United Kingdom
| | - Andrew M Prentice
- *Medical Research Council International Nutrition Group, London School of Hygiene and Tropical Medicine, London, United Kingdom; Medical Research Council Unit, Banjul, The Gambia; Nutrition Research Institute, North Carolina Research Campus, Kannapolis, North Carolina, USA; Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; University College London Genetics Institute, University College London, United Kingdom; Toxicology Services, Incorporated, Chapel Hill, North Carolina, USA; and Maternal and Child Nutrition Group, Medical Research Council Human Nutrition Research, Cambridge, United Kingdom
| | - Branwen J Hennig
- *Medical Research Council International Nutrition Group, London School of Hygiene and Tropical Medicine, London, United Kingdom; Medical Research Council Unit, Banjul, The Gambia; Nutrition Research Institute, North Carolina Research Campus, Kannapolis, North Carolina, USA; Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; University College London Genetics Institute, University College London, United Kingdom; Toxicology Services, Incorporated, Chapel Hill, North Carolina, USA; and Maternal and Child Nutrition Group, Medical Research Council Human Nutrition Research, Cambridge, United Kingdom
| | - Steven H Zeisel
- *Medical Research Council International Nutrition Group, London School of Hygiene and Tropical Medicine, London, United Kingdom; Medical Research Council Unit, Banjul, The Gambia; Nutrition Research Institute, North Carolina Research Campus, Kannapolis, North Carolina, USA; Department of Nutrition, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; University College London Genetics Institute, University College London, United Kingdom; Toxicology Services, Incorporated, Chapel Hill, North Carolina, USA; and Maternal and Child Nutrition Group, Medical Research Council Human Nutrition Research, Cambridge, United Kingdom
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15
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Human mutations in methylenetetrahydrofolate dehydrogenase 1 impair nuclear de novo thymidylate biosynthesis. Proc Natl Acad Sci U S A 2014; 112:400-5. [PMID: 25548164 DOI: 10.1073/pnas.1414555112] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
An inborn error of metabolism associated with mutations in the human methylenetetrahydrofolate dehydrogenase 1 (MTHFD1) gene has been identified. The proband presented with SCID, megaloblastic anemia, and neurologic abnormalities, but the causal metabolic impairment is unknown. SCID has been associated with impaired purine nucleotide metabolism, whereas megaloblastic anemia has been associated with impaired de novo thymidylate (dTMP) biosynthesis. MTHFD1 functions to condense formate with tetrahydrofolate and serves as the primary entry point of single carbons into folate-dependent one-carbon metabolism in the cytosol. In this study, we examined the impact of MTHFD1 loss of function on folate-dependent purine, dTMP, and methionine biosynthesis in fibroblasts from the proband with MTHFD1 deficiency. The flux of formate incorporation into methionine and dTMP was decreased by 90% and 50%, respectively, whereas formate flux through de novo purine biosynthesis was unaffected. Patient fibroblasts exhibited enriched MTHFD1 in the nucleus, elevated uracil in DNA, lower rates of de novo dTMP synthesis, and increased salvage pathway dTMP biosynthesis relative to control fibroblasts. These results provide evidence that impaired nuclear de novo dTMP biosynthesis can lead to both megaloblastic anemia and SCID in MTHFD1 deficiency.
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16
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Field MS, Kamynina E, Agunloye OC, Liebenthal RP, Lamarre SG, Brosnan ME, Brosnan JT, Stover PJ. Nuclear enrichment of folate cofactors and methylenetetrahydrofolate dehydrogenase 1 (MTHFD1) protect de novo thymidylate biosynthesis during folate deficiency. J Biol Chem 2014; 289:29642-50. [PMID: 25213861 DOI: 10.1074/jbc.m114.599589] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Folate-mediated one-carbon metabolism is a metabolic network of interconnected pathways that is required for the de novo synthesis of three of the four DNA bases and the remethylation of homocysteine to methionine. Previous studies have indicated that the thymidylate synthesis and homocysteine remethylation pathways compete for a limiting pool of methylenetetrahydrofolate cofactors and that thymidylate biosynthesis is preserved in folate deficiency at the expense of homocysteine remethylation, but the mechanisms are unknown. Recently, it was shown that thymidylate synthesis occurs in the nucleus, whereas homocysteine remethylation occurs in the cytosol. In this study we demonstrate that methylenetetrahydrofolate dehydrogenase 1 (MTHFD1), an enzyme that generates methylenetetrahydrofolate from formate, ATP, and NADPH, functions in the nucleus to support de novo thymidylate biosynthesis. MTHFD1 translocates to the nucleus in S-phase MCF-7 and HeLa cells. During folate deficiency mouse liver MTHFD1 levels are enriched in the nucleus >2-fold at the expense of levels in the cytosol. Furthermore, nuclear folate levels are resistant to folate depletion when total cellular folate levels are reduced by >50% in mouse liver. The enrichment of folate cofactors and MTHFD1 protein in the nucleus during folate deficiency in mouse liver and human cell lines accounts for previous metabolic studies that indicated 5,10-methylenetetrahydrofolate is preferentially directed toward de novo thymidylate biosynthesis at the expense of homocysteine remethylation during folate deficiency.
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Affiliation(s)
- Martha S Field
- From the Division of Nutritional Sciences, Cornell University, Ithaca, New York 14853 and
| | - Elena Kamynina
- From the Division of Nutritional Sciences, Cornell University, Ithaca, New York 14853 and
| | | | - Rebecca P Liebenthal
- From the Division of Nutritional Sciences, Cornell University, Ithaca, New York 14853 and
| | - Simon G Lamarre
- Department of Biochemistry, Memorial University of Newfoundland, St. John's, Newfoundland A1B 3X9, Canada
| | - Margaret E Brosnan
- Department of Biochemistry, Memorial University of Newfoundland, St. John's, Newfoundland A1B 3X9, Canada
| | - John T Brosnan
- Department of Biochemistry, Memorial University of Newfoundland, St. John's, Newfoundland A1B 3X9, Canada
| | - Patrick J Stover
- From the Division of Nutritional Sciences, Cornell University, Ithaca, New York 14853 and
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17
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Gao XH, Zhang GY, Wang Y, Zhang HY. Correlations of MTHFR 677C>T polymorphism with cardiovascular disease in patients with end-stage renal disease: a meta-analysis. PLoS One 2014; 9:e102323. [PMID: 25050994 PMCID: PMC4106822 DOI: 10.1371/journal.pone.0102323] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 06/17/2014] [Indexed: 01/11/2023] Open
Abstract
OBJECTIVE This meta-analysis was conducted to evaluate the correlations of a common polymorphism (677C>T) in the methylenetetrahydrofolate reductase (MTHFR) gene with risk of cardiovascular disease (CVD) in patients with end-stage renal disease (ESRD). METHOD The following electronic databases were searched without language restrictions: Web of Science (1945∼2013), the Cochrane Library Database (Issue 12, 2013), MEDLINE (1966∼2013), EMBASE (1980∼2013), CINAHL (1982∼2013) and the Chinese Biomedical Database (CBM) (1982∼2013). Meta-analysis was performed using STATA statistical software. Odds ratios (ORs) with their 95% confidence intervals (95%CIs) were calculated. RESULTS Eight cohort studies met all inclusion criteria and were included in this meta-analysis. A total of 2,292 ESRD patients with CVD were involved in this meta-analysis. Our meta-analysis results revealed that the MTHFR 677C>T polymorphism might increase the risk of CVD in ESRD patients (TT vs. CC: OR = 2.75, 95%CI = 1.35∼5.59, P = 0.005; CT+TT vs. CC: OR = 1.39, 95%CI = 1.09∼1.78, P = 0.008; TT vs. CC+CT: OR = 2.52, 95%CI = 1.25∼5.09, P = 0.010; respectively). Further subgroup analysis by ethnicity suggested that the MTHFR 677C>T polymorphism was associated with an elevated risk for CVD in ESRD patients among Asians (TT vs. CC: OR = 3.38, 95%CI = 1.11∼10.28, P = 0.032; CT+TT vs. CC: OR = 1.44, 95%CI = 1.05∼1.97, P = 0.022; TT vs. CC+CT: OR = 3.15, 95%CI = 1.02∼9.72, P = 0.046; respectively), but not among Africans or Caucasians (all P>0.05). CONCLUSION Our findings indicate that the MTHFR 677C>T polymorphism may be associated with an elevated risk for CVD in ESRD patients, especially among Asians.
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Affiliation(s)
- Xian-Hui Gao
- Laboratory of Preventive Medicine, School of Public Health, Liaoning Medical University, Jinzhou, China
- * E-mail:
| | - Guo-Yi Zhang
- Laboratory of Preventive Medicine, School of Public Health, Liaoning Medical University, Jinzhou, China
| | - Ying Wang
- Department of Toxicology, School of Public Health, Liaoning Medical University, Jinzhou, China
| | - Hui-Ying Zhang
- Sleep Monitoring Center, First Affiliated Hospital of Liaoning Medical University, Jinzhou, China
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18
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Schaevitz L, Berger-Sweeney J, Ricceri L. One-carbon metabolism in neurodevelopmental disorders: using broad-based nutraceutics to treat cognitive deficits in complex spectrum disorders. Neurosci Biobehav Rev 2014; 46 Pt 2:270-84. [PMID: 24769289 DOI: 10.1016/j.neubiorev.2014.04.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 03/07/2014] [Accepted: 04/15/2014] [Indexed: 12/22/2022]
Abstract
Folate and choline, two nutrients involved in the one-carbon metabolic cycle, are intimately involved in regulating DNA integrity, synthesis, biogenic amine synthesis, and methylation. In this review, we discuss evidence that folate and choline play an important role in normal cognitive development, and that altered levels of these nutrients during periods of high neuronal proliferation and synaptogenesis can result in diminished cognitive function. We also discuss the use of these nutrients as therapeutic agents in a spectrum of developmental disorders in which intellectual disability is a prominent feature, such as in Fragile-X, Rett syndrome, Down syndrome, and Autism spectrum disorders. A survey of recent literature suggests that nutritional supplements have mild, but generally consistent, effects on improving cognition. Intervening with supplements earlier rather than later during development is more effective in improving cognitive outcomes. Given the mild improvements seen after treatments using nutrients alone, and the importance of the genetic profile of parents and offspring, we suggest that using nutraceutics early in development and in combination with other therapeutics are likely to have positive impacts on cognitive outcomes in a broad spectrum of complex neurodevelopmental disorders.
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Affiliation(s)
| | | | - Laura Ricceri
- Section of Neurotoxicology and Neuroendocrinology, Dept Cell Biology and Neuroscience, Istituto Superiore di Sanità, Rome, Italy.
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19
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Dietary and genetic manipulations of folate metabolism differentially affect neocortical functions in mice. Neurotoxicol Teratol 2013; 38:79-91. [PMID: 23684804 DOI: 10.1016/j.ntt.2013.05.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 05/02/2013] [Accepted: 05/03/2013] [Indexed: 01/09/2023]
Abstract
Converging evidence suggests that folate-mediated one-carbon metabolism may modulate cognitive functioning throughout the lifespan, but few studies have directly tested this hypothesis. This study examined the separate and combined effects of dietary and genetic manipulations of folate metabolism on neocortical functions in mice, modeling a common genetic variant in the MTHFD1 gene in humans. Mutant (Mthfd1(gt/+)) and wildtype (WT) male mice were assigned to a folate sufficient or deficient diet at weaning and continued on these diets throughout testing on a series of visual attention tasks adapted from the 5-choice serial reaction time task. WT mice on a deficient diet exhibited impulsive responding immediately following a change in task parameters that increased demands on attention and impulse control, and on trials following an error. This pattern of findings indicates a heightened affective response to stress and/or an inability to regulate negative emotions. In contrast, Mthfd1(gt/+) mice (regardless of diet) exhibited attentional dysfunction and a blunted affective response to committing an error. The Mthfd1(gt/+) mice also showed significantly decreased expression levels for genes encoding choline dehydrogenase and the alpha 7 nicotinic cholinergic receptor. The effects of the MTHFD1 mutation were less pronounced when combined with a deficient diet, suggesting a compensatory mechanism to the combined genetic and dietary perturbation of folate metabolism. These data demonstrate that common alterations in folate metabolism can produce functionally distinct cognitive and affective changes, and highlight the importance of considering genotype when making dietary folate recommendations.
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