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Saucedo R, Ferreira-Hermosillo A, Robledo-Clemente M, Díaz-Velázquez MF, Valencia-Ortega J. Association of DNA Methylation with Infant Birth Weight in Women with Gestational Diabetes. Metabolites 2024; 14:361. [PMID: 39057684 PMCID: PMC11278577 DOI: 10.3390/metabo14070361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Revised: 06/21/2024] [Accepted: 06/24/2024] [Indexed: 07/28/2024] Open
Abstract
Offspring exposed to gestational diabetes mellitus (GDM) exhibit greater adiposity at birth. This early-life phenotype may increase offspring risk of developing obesity, metabolic syndrome, type 2 diabetes, and cardiovascular disease later in life. Infants born to women with GDM have a dysregulation of several hormones, cytokines, and growth factors related to fetal fat mass growth. One of the molecular mechanisms of GDM influencing these factors is epigenetic alterations, such as DNA methylation (DNAm). This review will examine the role of DNAm as a potential biomarker for monitoring fetal growth during pregnancy in women with GDM. This information is relevant since it may provide useful new biomarkers for the diagnosis, prognosis, and treatment of fetal growth and its later-life health consequences.
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Affiliation(s)
- Renata Saucedo
- Unidad de Investigación Médica en Enfermedades Endocrinas, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico; (R.S.); (A.F.-H.)
| | - Aldo Ferreira-Hermosillo
- Unidad de Investigación Médica en Enfermedades Endocrinas, Hospital de Especialidades, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Mexico City 06720, Mexico; (R.S.); (A.F.-H.)
| | - Magalhi Robledo-Clemente
- Hospital de Gineco Obstetricia 3, Centro Médico Nacional La Raza, Instituto Mexicano del Seguro Social, Mexico City 02990, Mexico; (M.R.-C.); (M.F.D.-V.)
| | - Mary Flor Díaz-Velázquez
- Hospital de Gineco Obstetricia 3, Centro Médico Nacional La Raza, Instituto Mexicano del Seguro Social, Mexico City 02990, Mexico; (M.R.-C.); (M.F.D.-V.)
| | - Jorge Valencia-Ortega
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología-Facultad de Química, Universidad Nacional Autónoma de México, Mexico City 11000, Mexico
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Giannubilo SR, Marzioni D, Tossetta G, Montironi R, Meccariello ML, Ciavattini A. The "Bad Father": Paternal Role in Biology of Pregnancy and in Birth Outcome. BIOLOGY 2024; 13:165. [PMID: 38534435 DOI: 10.3390/biology13030165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 02/21/2024] [Accepted: 02/29/2024] [Indexed: 03/28/2024]
Abstract
Pregnancy is generally studied as a biological interaction between a mother and a fetus; however, the father, with his characteristics, lifestyle, genetics, and living environment, is by no means unrelated to the outcome of pregnancy. The half of the fetal genetic heritage of paternal derivation can be decisive in cases of inherited chromosomal disorders, and can be the result of de novo genetic alterations. In addition to the strictly pathological aspects, paternal genetics may transmit thrombophilic traits that affect the implantation and vascular construction of the feto-placental unit, lead to placenta-mediated diseases such as pre-eclampsia and fetal growth retardation, and contribute to the multifactorial genesis of preterm delivery. Biological aspects of immunological tolerance to paternal antigens also appear to be crucial for these pathologies. Finally, this review describes the biological findings by which the environment, exposure to pathogens, lifestyle, and nutritional style of the father affect fetal pathophysiological and epigenetic definition.
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Affiliation(s)
- Stefano Raffaele Giannubilo
- Clinic of Obstetrics and Gynaecology, Department of Clinical Sciences, Università Politecnica Delle Marche, 60123 Ancona, Italy
| | - Daniela Marzioni
- Department of Experimental and Clinical Medicine, Università Politecnica Delle Marche, 60126 Ancona, Italy
| | - Giovanni Tossetta
- Department of Experimental and Clinical Medicine, Università Politecnica Delle Marche, 60126 Ancona, Italy
| | - Ramona Montironi
- Clinic of Obstetrics and Gynaecology, Department of Clinical Sciences, Università Politecnica Delle Marche, 60123 Ancona, Italy
| | - Maria Liberata Meccariello
- Clinic of Obstetrics and Gynaecology, Department of Clinical Sciences, Università Politecnica Delle Marche, 60123 Ancona, Italy
| | - Andrea Ciavattini
- Clinic of Obstetrics and Gynaecology, Department of Clinical Sciences, Università Politecnica Delle Marche, 60123 Ancona, Italy
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Moagi I, Mabasa L, Maputle SM, Ndwandwe D, Raliphaswa NS, Netshikweta LM, Malwela T, Samie A. The impact of DNA methylation as a factor of Adverse Pregnancy and Birth Outcomes (APBOs): a systematic review protocol. Syst Rev 2024; 13:4. [PMID: 38167510 PMCID: PMC10759365 DOI: 10.1186/s13643-023-02416-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 12/05/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND Deoxyribonucleic acid (DNA) methylation is one of the epigenetic modifications that has gained a lot of interest as a factor influencing fetal programming and as a biomarker for adverse pregnancy and birth outcomes (APBOs). Epidemiological studies have demonstrated that DNA methylation can result in adverse pregnancy and birth outcomes (APBOs) including miscarriage, intrauterine growth restriction (IUGR), low birth weight (LBW), sepsis, and preterm birth (PTB), which may later result in diseases in adulthood. However, the mechanism by which DNA methylation influences these APBOs remains unclear. The systematic review will assess the association between global and gene-specific DNA methylation with adverse pregnancy outcomes. METHOD The Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) 2020 checklist will be followed when conducting this systematic review. To develop the search strategy the PI(E)COS (population, intervention/exposure, comparator/control, outcome, and study designs) framework will be followed. Thus far, the research team has retrieved 4721 from Cochrane Library, PubMed, Web of Sciences, and MEDLINE. Out of these, 584 studies have been screened for eligibility, and approximately 124 studies meet the inclusion criteria. Pending the search results identified from the grey literature. For identification of unpublished studies in journals indexed in electronic databases, Google Scholar will be used. I.M and A.S will separately extract data from the articles and screen them, if there are any disagreements between I.M and A.S, then the L.M will resolve them. The methodological quality and bias risk of the included studies will be evaluated using the Critical Appraisal Skill Programme CASP) checklist. [Formula: see text] and [Formula: see text] alpha = 0.10 statistic will be used for assessing statistical heterogeneity between studies. The Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) approach will be used to assess and grade the overall quality of extracted data. ETHICS AND DISSEMINATION Ethical approval is not required. The systematic review will assess available literature on possible associations between DNA methylation with adverse pregnancy and birth outcomes (APBOs) including LBW, IUGR, miscarriage, sepsis, and PTB. The findings could help guide future research assessing DNA methylation and other APBOs. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRCRD42022370647.
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Affiliation(s)
- Innocent Moagi
- Faculty of Sciences, Engineering and Agriculture, Department of Biochemistry and Microbiology, University of Venda, Private Bag X5050, Thohoyandou, 0950, South Africa.
| | - Lawrence Mabasa
- Biomedical Research and Innovation Platform (BRIP), South Africa Medical Research Council, Tygerberg, P.O Box 19070, Cape Town, 7505, South Africa
| | - Sonto Maria Maputle
- Faculty of Health Sciences, Department of Advanced Nursing Sciences, University of Venda, Private Bag X5050, Thohoyandou, 0950, South Africa
| | - Duduzile Ndwandwe
- Cochrane South Africa, South Africa Medical Research Council, Parow Valley, Cape Town, 7501, South Africa
| | - Ndidzulafhi Selina Raliphaswa
- Faculty of Health Sciences, Department of Advanced Nursing Sciences, University of Venda, Private Bag X5050, Thohoyandou, 0950, South Africa
| | - Lizzy Mutshinyalo Netshikweta
- Faculty of Health Sciences, Department of Advanced Nursing Sciences, University of Venda, Private Bag X5050, Thohoyandou, 0950, South Africa
| | - Thivhulawi Malwela
- Faculty of Health Sciences, Department of Advanced Nursing Sciences, University of Venda, Private Bag X5050, Thohoyandou, 0950, South Africa
| | - Amidou Samie
- Faculty of Sciences, Engineering and Agriculture, Department of Biochemistry and Microbiology, University of Venda, Private Bag X5050, Thohoyandou, 0950, South Africa.
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Michaeloudes C, Christodoulides S, Christodoulou P, Kyriakou TC, Patrikios I, Stephanou A. Variability in the Clinical Effects of the Omega-3 Polyunsaturated Fatty Acids DHA and EPA in Cardiovascular Disease-Possible Causes and Future Considerations. Nutrients 2023; 15:4830. [PMID: 38004225 PMCID: PMC10675410 DOI: 10.3390/nu15224830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 11/08/2023] [Accepted: 11/16/2023] [Indexed: 11/26/2023] Open
Abstract
Cardiovascular disease (CVD) that includes myocardial infarction and stroke, is the leading cause of mortality worldwide. Atherosclerosis, the primary underlying cause of CVD, can be controlled by pharmacological and dietary interventions, including n-3 polyunsaturated fatty acid (PUFA) supplementation. n-3 PUFA supplementation, primarily consisting of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), has shown promise in reducing atherosclerosis by modulating risk factors, including triglyceride levels and vascular inflammation. n-3 PUFAs act by replacing pro-inflammatory fatty acid types in cell membranes and plasma lipids, by regulating transcription factor activity, and by inducing epigenetic changes. EPA and DHA regulate cellular function through shared and differential molecular mechanisms. Large clinical studies on n-3 PUFAs have reported conflicting findings, causing confusion among the public and health professionals. In this review, we discuss important factors leading to these inconsistencies, in the context of atherosclerosis, including clinical study design and the differential effects of EPA and DHA on cell function. We propose steps to improve clinical and basic experimental study design in order to improve supplement composition optimization. Finally, we propose that understanding the factors underlying the poor response to n-3 PUFAs, and the development of molecular biomarkers for predicting response may help towards a more personalized treatment.
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Affiliation(s)
- Charalambos Michaeloudes
- School of Medicine, European University Cyprus, Nicosia 2404, Cyprus; (S.C.); (P.C.); (T.-C.K.); (I.P.); (A.S.)
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Aurich S, Müller L, Kovacs P, Keller M. Implication of DNA methylation during lifestyle mediated weight loss. Front Endocrinol (Lausanne) 2023; 14:1181002. [PMID: 37614712 PMCID: PMC10442821 DOI: 10.3389/fendo.2023.1181002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 07/18/2023] [Indexed: 08/25/2023] Open
Abstract
Over the past 50 years, the number of overweight/obese people increased significantly, making obesity a global public health challenge. Apart from rare monogenic forms, obesity is a multifactorial disease, most likely resulting from a concerted interaction of genetic, epigenetic and environmental factors. Although recent studies opened new avenues in elucidating the complex genetics behind obesity, the biological mechanisms contributing to individual's risk to become obese are not yet fully understood. Non-genetic factors such as eating behaviour or physical activity are strong contributing factors for the onset of obesity. These factors may interact with genetic predispositions most likely via epigenetic mechanisms. Epigenome-wide association studies or methylome-wide association studies are measuring DNA methylation at single CpGs across thousands of genes and capture associations to obesity phenotypes such as BMI. However, they only represent a snapshot in the complex biological network and cannot distinguish between causes and consequences. Intervention studies are therefore a suitable method to control for confounding factors and to avoid possible sources of bias. In particular, intervention studies documenting changes in obesity-associated epigenetic markers during lifestyle driven weight loss, make an important contribution to a better understanding of epigenetic reprogramming in obesity. To investigate the impact of lifestyle in obesity state specific DNA methylation, especially concerning the development of new strategies for prevention and individual therapy, we reviewed 19 most recent human intervention studies. In summary, this review highlights the huge potential of targeted interventions to alter disease-associated epigenetic patterns. However, there is an urgent need for further robust and larger studies to identify the specific DNA methylation biomarkers which influence obesity.
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Affiliation(s)
- Samantha Aurich
- Medical Department III - Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, Leipzig, Germany
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Center Munich at the University of Leipzig and University Hospital Leipzig, Leipzig, Germany
| | - Luise Müller
- Medical Department III - Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, Leipzig, Germany
| | - Peter Kovacs
- Medical Department III - Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, Leipzig, Germany
- Deutsches Zentrum für Diabetesforschung e.V., Neuherberg, Germany
| | - Maria Keller
- Medical Department III - Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, Leipzig, Germany
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Center Munich at the University of Leipzig and University Hospital Leipzig, Leipzig, Germany
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6
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Louise J, Deussen AR, Koletzko B, Owens J, Saffery R, Dodd JM. Effect of an antenatal diet and lifestyle intervention and maternal BMI on cord blood DNA methylation in infants of overweight and obese women: The LIMIT Randomised Controlled Trial. PLoS One 2022; 17:e0269723. [PMID: 35749371 PMCID: PMC9231808 DOI: 10.1371/journal.pone.0269723] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 05/23/2022] [Indexed: 11/18/2022] Open
Abstract
Background
To investigate the effect of an antenatal diet and lifestyle intervention, and maternal pre-pregnancy overweight or obesity, on infant cord blood DNA methylation.
Methods
We measured DNA methylation in 645 cord blood samples from participants in the LIMIT study (an antenatal diet and lifestyle intervention for women with early pregnancy BMI ≥25.0 kg/m2) using the Illumina 450K BeadChip array, and tested for any differential methylation related to the intervention, and to maternal early pregnancy BMI. We also analysed differential methylation in relation to selected candidate genes.
Results
No CpG sites were significantly differentially methylated in relation to either the diet and lifestyle intervention, or with maternal early pregnancy BMI. There was no significant differential methylation in any of the selected genes related to the intervention, or to maternal BMI.
Conclusion
We found no evidence of an effect of either antenatal diet and lifestyle, or of maternal early pregnancy BMI, on cord blood DNA methylation.
Clinical trials registration
ACTRN12607000161426
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Affiliation(s)
- Jennie Louise
- Discipline of Obstetrics & Gynaecology and The Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
- * E-mail:
| | - Andrea R. Deussen
- Discipline of Obstetrics & Gynaecology and The Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
| | - Berthold Koletzko
- Division of Metabolic and Nutritional Medicine, Dept. Paediatrics, Dr. von Hauner Children’s Hospital, LMU—Ludwig-Maximilian-Universität, Munich, Germany
| | - Julie Owens
- Deputy Vice-Chancellor’s Research Office, Deakin University, Geelong, Australia
| | - Richard Saffery
- Epigenetics Group, Murdoch Children’s Research Institute, Royal Children’s Hospital, Parkville, Victoria, Australia
- Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia
| | - Jodie M. Dodd
- Discipline of Obstetrics & Gynaecology and The Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
- Department of Perinatal Medicine, Women’s and Babies Division, The Women’s and Children’s Hospital, Adelaide, South Australia, Australia
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Cleal JK, Poore KR, Lewis RM. The placental exposome, placental epigenetic adaptations and lifelong cardio-metabolic health. Mol Aspects Med 2022; 87:101095. [DOI: 10.1016/j.mam.2022.101095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 03/04/2022] [Accepted: 03/12/2022] [Indexed: 12/15/2022]
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8
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Joyce BT, Liu H, Wang L, Wang J, Zheng Y, Nannini D, Drong A, Shiau S, Li W, Leng J, Shen Y, Gao R, Baccarelli A, Hu G, Hou L. Novel epigenetic link between gestational diabetes mellitus and macrosomia. Epigenomics 2021; 13:1221-1230. [PMID: 34337972 DOI: 10.2217/epi-2021-0096] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Background & objectives: Examine maternal gestational diabetes mellitus (GDM), macrosomia and DNA methylation in candidate genes IGF1, IGF2, H19, ARHGRF11, MEST, NR3C1, ADIPOQ and RETN. Materials & methods: A total of 1145 children (572 GDM cases and 573 controls) from the Tianjin GDM study, including 177 with macrosomia, had blood DNA collection at median age 5.9 (range: 3.1-10.0). We used logistic regression to screen for associations with GDM and model macrosomia on 37 CpGs, and performed mediation analysis. Results: One CpG was associated with macrosomia at false discovery rate (FDR) <0.05 (cg14428359 in MEST); two (cg19466922 in MEST and cg26263166 in IGF2) were associated at p < 0.05 but mediated 26 and 13%, respectively. Conclusion: MEST and IGF2 were previously identified for potential involvement in fetal growth and development (Trial Registration number: NCT01554358 [ClinicalTrials.gov]).
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Affiliation(s)
- Brian T Joyce
- Center for Global Oncology, Institute for Global Health, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Huikun Liu
- Tianjin Women's & Children's Health Center, Tianjin, China
| | - Leishen Wang
- Tianjin Women's & Children's Health Center, Tianjin, China
| | - Jun Wang
- Center for Global Oncology, Institute for Global Health, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Yinan Zheng
- Center for Global Oncology, Institute for Global Health, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Drew Nannini
- Center for Global Oncology, Institute for Global Health, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Alex Drong
- Big Data Institute, University of Oxford, Oxford, UK.,Department of Environmental Health Science, Mailman School of Public Health, Columbia University, NY, 10032, USA
| | - Stephanie Shiau
- Department of Biostatistics & Epidemiology, Rutgers School of Public Health, Piscataway, NJ, 08854, USA
| | - Weiqin Li
- Tianjin Women's & Children's Health Center, Tianjin, China
| | - Junhong Leng
- Tianjin Women's & Children's Health Center, Tianjin, China
| | - Yun Shen
- Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA.,Department of Endocrinology & Metabolism, Shanghai Jiao Tong University Affiliated Six People's Hospital, Shanghai, China
| | - Ru Gao
- Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA
| | - Andrea Baccarelli
- Department of Environmental Health Science, Mailman School of Public Health, Columbia University, NY, 10032, USA
| | - Gang Hu
- Pennington Biomedical Research Center, Baton Rouge, LA, 70808, USA
| | - Lifang Hou
- Center for Global Oncology, Institute for Global Health, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
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Sibin M, Hothi O, Misra P, Manoj P, Chakravarty R, Shaw SC, Kanitkar M. DNA methylation status of P2 promoter of IGF2 gene in growth restricted neonates. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2021.101153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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10
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Wegermann K, Suzuki A, Mavis AM, Abdelmalek MF, Diehl AM, Moylan CA. Tackling Nonalcoholic Fatty Liver Disease: Three Targeted Populations. Hepatology 2021; 73:1199-1206. [PMID: 32865242 DOI: 10.1002/hep.31533] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/31/2020] [Accepted: 08/13/2020] [Indexed: 12/11/2022]
Affiliation(s)
- Kara Wegermann
- Division of GastroenterologyDepartment of MedicineDuke University Health SystemDurhamNC
| | - Ayako Suzuki
- Division of GastroenterologyDepartment of MedicineDuke University Health SystemDurhamNC.,Department of MedicineDurham Veterans Affairs Medical CenterDurhamNC
| | - Alisha M Mavis
- Division of Gastroenterology, Hepatology, and NutritionDepartment of PediatricsDuke University Health SystemDurhamNC
| | - Manal F Abdelmalek
- Division of GastroenterologyDepartment of MedicineDuke University Health SystemDurhamNC
| | - Anna Mae Diehl
- Division of GastroenterologyDepartment of MedicineDuke University Health SystemDurhamNC
| | - Cynthia A Moylan
- Division of GastroenterologyDepartment of MedicineDuke University Health SystemDurhamNC.,Department of MedicineDurham Veterans Affairs Medical CenterDurhamNC
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Olaya-C M, Ayala-Ramirez P, Sanchez-Barbero AI, Guzmán-P SL, Gil F, Silva JL, Bernal JE. Protein and genetic expression of CDKN1C and IGF2 and clinical features related to human umbilical cord length. J Perinat Med 2021; 49:229-236. [PMID: 32364515 DOI: 10.1515/jpm-2019-0442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 03/23/2020] [Indexed: 11/15/2022]
Abstract
BACKGROUND Umbilical cord (UC) abnormalities are related to neurological outcome and death; specific molecular factors that might be involved are, as yet, unknown; however, protein-coding genes insulin-like growth factor 2 (IGF2) and cyclin-dependent kinase inhibitor 1C (CDKN1C) have been identified as potential candidates. METHODS An analytical observational study was carried out. Newborn UCs were collected, along with their clinical and morphological features. Immunohistochemical analysis was made on paraffin-embedded sections and quantitative reverse transcription polymerase chain reaction (qRT-PCR) was performed in fresh UC tissue for the assessment of gene expression. RESULTS A total of 100 newborns were included. A significant association was found between long UC and prematurity [odds ratio (OR) 9] and long UC and respiratory distress (OR 4.04). Gestational diabetes (OR 8.55) and hypertensive disorders of pregnancy (HDP) (OR 4.71) were found to be related to short UCs. The frequency for abnormal UC length was higher than expected. UC length was positively correlated with maternal, newborn and placental weight. No statistical association was found between IGF2 and CDKN1C (p57) expression and UC length; however, there was a tendency for higher CDKN1C expression in short UCs, while, on the contrary, higher IGF2 expression for long UCs. CONCLUSION UC length was observed to be associated with maternal and newborn complications. Protein expression, messenger RNA (mRNA) activity and the activity of said genes seem to be related to UC length.
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Affiliation(s)
- Mercedes Olaya-C
- Associate Professor, Department of Pathology, The Medical School, Pontificia Universidad Javeriana - Hospital Universitario San Ignacio, Kra 7 40-62, Bogota, Colombia
| | - Paola Ayala-Ramirez
- Institute of Human Genetics, The Medical School, Pontificia Universidad Javeriana, Bogota, Colombia
| | - Ana I Sanchez-Barbero
- Pontificia Universidad Javeriana - Department of Resident of Human Genetics, Hospital Universitario San Ignacio, Bogota, Colombia
| | - Sandra L Guzmán-P
- Pontificia Universidad Javeriana - Department of Pathology Resident, Hospital Universitario San Ignacio, Bogota, Colombia
| | - Fabian Gil
- Universidad Javeriana, Department of Clinical Epidemiology and Biostatistics, Bogota, Colombia
| | - Jaime L Silva
- Pontificia Universidad Javeriana - San Ignacio University Hospital, Bogota, Colombia
| | | | - Jaime E Bernal
- Facultad de Salud, Universidad del Sinu, Cartagena, Colombia
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12
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Wang C, Plusquin M, Ghantous A, Herceg Z, Alfano R, Cox B, Nawrot TS. DNA methylation of insulin-like growth factor 2 and H19 cluster in cord blood and prenatal air pollution exposure to fine particulate matter. Environ Health 2020; 19:129. [PMID: 33287817 PMCID: PMC7720562 DOI: 10.1186/s12940-020-00677-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 11/13/2020] [Indexed: 05/06/2023]
Abstract
BACKGROUND The IGF2 (insulin-like growth factor 2) and H19 gene cluster plays an important role during pregnancy as it promotes both foetal and placental growth. We investigated the association between cord blood DNA methylation status of the IGF2/H19 gene cluster and maternal fine particulate matter exposure during fetal life. To the best of our knowledge, this is the first study investigating the association between prenatal PM2.5 exposure and newborn DNA methylation of the IGF2/H19. METHODS Cord blood DNA methylation status of IGF2/H19 cluster was measured in 189 mother-newborn pairs from the ENVIRONAGE birth cohort (Flanders, Belgium). We assessed the sex-specific association between residential PM2.5 exposure during pregnancy and the methylation level of CpG loci mapping to the IGF2/H19 cluster, and identified prenatal vulnerability by investigating susceptible time windows of exposure. We also addressed the biological functionality of DNA methylation level in the gene cluster. RESULTS Prenatal PM2.5 exposure was found to have genetic region-specific significant association with IGF2 and H19 during specific gestational weeks. The association was found to be sex-specific in both gene regions. Functionality of the DNA methylation was annotated by the association to fetal growth and cellular pathways. CONCLUSIONS The results of our study provided evidence that prenatal PM2.5 exposure is associated with DNA methylation in newborns' IGF2/H19. The consequences within the context of fetal development of future phenotyping should be addressed.
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Affiliation(s)
- Congrong Wang
- Centre for Environmental Sciences, Hasselt University, Agoralaan gebouw D, 3590 Diepenbeek, Hasselt, Belgium
| | - Michelle Plusquin
- Centre for Environmental Sciences, Hasselt University, Agoralaan gebouw D, 3590 Diepenbeek, Hasselt, Belgium
| | - Akram Ghantous
- Epigenetics Group, International Agency for Research on Cancer (IARC), Lyon, France
| | - Zdenko Herceg
- Epigenetics Group, International Agency for Research on Cancer (IARC), Lyon, France
| | - Rossella Alfano
- Centre for Environmental Sciences, Hasselt University, Agoralaan gebouw D, 3590 Diepenbeek, Hasselt, Belgium
| | - Bianca Cox
- Centre for Environmental Sciences, Hasselt University, Agoralaan gebouw D, 3590 Diepenbeek, Hasselt, Belgium
| | - Tim S. Nawrot
- Centre for Environmental Sciences, Hasselt University, Agoralaan gebouw D, 3590 Diepenbeek, Hasselt, Belgium
- Department of Public Health and Primary Care, Leuven University, Leuven, Belgium
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13
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Epigenetic signatures associated with maternal body mass index or gestational weight gain: a systematic review. J Dev Orig Health Dis 2020; 12:373-383. [PMID: 32873364 DOI: 10.1017/s2040174420000811] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Maternal body mass index (BMI) and gestational weight gain (GWG) impacts both the mother's and the child's health, and epigenetic modifications have been suggested to mediate some of these effects in offspring. This systematic review aimed to summarize the current literature on associations between maternal BMI and GWG and epigenetic marks. We performed systematic searches in PubMed and EMBASE and manual searches of reference lists. We included 49 studies exploring the association between maternal BMI and/or GWG and DNA methylation or miRNA; 7 performed in maternal tissues, 13 in placental tissue and 38 in different offspring tissues. The most consistent findings were reported for the relationship between maternal BMI, in particular pre-pregnant BMI, and expression of miRNA Let-7d in both maternal blood and placental tissue, methylation of the gene HIF3A in umbilical cord blood and umbilical tissue, and with expression in the miR-210 target gene, BDNF in placental tissue and cord blood. Correspondingly, methylation of BDNF was also found in placental tissue and cord blood. The current evidence suggests that maternal BMI is associated with some epigenetic signatures in the mother, the placenta and her offspring, which could indicate that some of the effects proposed by the Developmental Origins of Health and Disease-hypothesis may be mediated by epigenetic marks. In conclusion, there is a need for large, well-designed studies and meta-analyses that can clarify the relationship between BMI, GWG and epigenetic changes.
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Argyraki M, Damdimopoulou P, Chatzimeletiou K, Grimbizis GF, Tarlatzis BC, Syrrou M, Lambropoulos A. In-utero stress and mode of conception: impact on regulation of imprinted genes, fetal development and future health. Hum Reprod Update 2020; 25:777-801. [PMID: 31633761 DOI: 10.1093/humupd/dmz025] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 07/04/2019] [Accepted: 07/12/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Genomic imprinting is an epigenetic gene regulatory mechanism; disruption of this process during early embryonic development can have major consequences on both fetal and placental development. The periconceptional period and intrauterine life are crucial for determining long-term susceptibility to diseases. Treatments and procedures in assisted reproductive technologies (ART) and adverse in-utero environments may modify the methylation levels of genomic imprinting regions, including insulin-like growth factor 2 (IGF2)/H19, mesoderm-specific transcript (MEST), and paternally expressed gene 10 (PEG10), affecting the development of the fetus. ART, maternal psychological stress, and gestational exposures to chemicals are common stressors suspected to alter global epigenetic patterns including imprinted genes. OBJECTIVE AND RATIONALE Our objective is to highlight the effect of conception mode and maternal psychological stress on fetal development. Specifically, we monitor fetal programming, regulation of imprinted genes, fetal growth, and long-term disease risk, using the imprinted genes IGF2/H19, MEST, and PEG10 as examples. The possible role of environmental chemicals in genomic imprinting is also discussed. SEARCH METHODS A PubMed search of articles published mostly from 2005 to 2019 was conducted using search terms IGF2/H19, MEST, PEG10, imprinted genes, DNA methylation, gene expression, and imprinting disorders (IDs). Studies focusing on maternal prenatal stress, psychological well-being, environmental chemicals, ART, and placental/fetal development were evaluated and included in this review. OUTCOMES IGF2/H19, MEST, and PEG10 imprinted genes have a broad developmental effect on fetal growth and birth weight variation. Their disruption is linked to pregnancy complications, metabolic disorders, cognitive impairment, and cancer. Adverse early environment has a major impact on the developing fetus, affecting mostly growth, the structure, and subsequent function of the hypothalamic-pituitary-adrenal axis and neurodevelopment. Extensive evidence suggests that the gestational environment has an impact on epigenetic patterns including imprinting, which can lead to adverse long-term outcomes in the offspring. Environmental stressors such as maternal prenatal psychological stress have been found to associate with altered DNA methylation patterns in placenta and to affect fetal development. Studies conducted during the past decades have suggested that ART pregnancies are at a higher risk for a number of complications such as birth defects and IDs. ART procedures involve multiple steps that are conducted during critical windows for imprinting establishment and maintenance, necessitating long-term evaluation of children conceived through ART. Exposure to environmental chemicals can affect placental imprinting and fetal growth both in humans and in experimental animals. Therefore, their role in imprinting should be better elucidated, considering the ubiquitous exposure to these chemicals. WIDER IMPLICATIONS Dysregulation of imprinted genes is a plausible mechanism linking stressors such as maternal psychological stress, conception using ART, and chemical exposures with fetal growth. It is expected that a greater understanding of the role of imprinted genes and their regulation in fetal development will provide insights for clinical prevention and management of growth and IDs. In a broader context, evidence connecting impaired imprinted gene function to common diseases such as cancer is increasing. This implies early regulation of imprinting may enable control of long-term human health, reducing the burden of disease in the population in years to come.
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Affiliation(s)
- Maria Argyraki
- First Department of Obstetrics and Gynecology, Laboratory of Genetics, School of Medicine, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Ring Road, Nea Efkarpia, 56403 Thessaloniki, Greece
| | - Pauliina Damdimopoulou
- Karolinska Institutet, Department of Clinical Sciences, Intervention and Technology, Unit of Obstetrics and Gynecology, K57 Karolinska University Hospital Huddinge, SE-14186 Stockholm, Sweden
| | - Katerina Chatzimeletiou
- First Department of Obstetrics and Gynecology, Unit for Human Reproduction, School of Medicine, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Ring Road, Nea Efkarpia, 56403 Thessaloniki, Greece
| | - Grigoris F Grimbizis
- First Department of Obstetrics and Gynecology, Unit for Human Reproduction, School of Medicine, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Ring Road, Nea Efkarpia, 56403 Thessaloniki, Greece
| | - Basil C Tarlatzis
- First Department of Obstetrics and Gynecology, Unit for Human Reproduction, School of Medicine, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Ring Road, Nea Efkarpia, 56403 Thessaloniki, Greece
| | - Maria Syrrou
- Department of Biology, Laboratory of Biology, School of Health Sciences, University of Ioannina, Dourouti University Campus, 45110, Ioannina, Greece
| | - Alexandros Lambropoulos
- First Department of Obstetrics and Gynecology, Laboratory of Genetics, School of Medicine, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Ring Road, Nea Efkarpia, 56403 Thessaloniki, Greece
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15
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Holly JMP, Biernacka K, Perks CM. The Neglected Insulin: IGF-II, a Metabolic Regulator with Implications for Diabetes, Obesity, and Cancer. Cells 2019; 8:cells8101207. [PMID: 31590432 PMCID: PMC6829378 DOI: 10.3390/cells8101207] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 09/30/2019] [Accepted: 10/01/2019] [Indexed: 02/07/2023] Open
Abstract
When originally discovered, one of the initial observations was that, when all of the insulin peptide was depleted from serum, the vast majority of the insulin activity remained and this was due to a single additional peptide, IGF-II. The IGF-II gene is adjacent to the insulin gene, which is a result of gene duplication, but has evolved to be considerably more complicated. It was one of the first genes recognised to be imprinted and expressed in a parent-of-origin specific manner. The gene codes for IGF-II mRNA, but, in addition, also codes for antisense RNA, long non-coding RNA, and several micro RNA. Recent evidence suggests that each of these have important independent roles in metabolic regulation. It has also become clear that an alternatively spliced form of the insulin receptor may be the principle IGF-II receptor. These recent discoveries have important implications for metabolic disorders and also for cancer, for which there is renewed acknowledgement of the importance of metabolic reprogramming.
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Affiliation(s)
- Jeff M P Holly
- Department of Translational Health Science, Bristol Medical School, Faculty of Health Sciences, University of Bristol, Learning & Research Building, Southmead Hospital, Bristol, BS10 5NB, UK.
| | - Kalina Biernacka
- Department of Translational Health Science, Bristol Medical School, Faculty of Health Sciences, University of Bristol, Learning & Research Building, Southmead Hospital, Bristol, BS10 5NB, UK
| | - Claire M Perks
- Department of Translational Health Science, Bristol Medical School, Faculty of Health Sciences, University of Bristol, Learning & Research Building, Southmead Hospital, Bristol, BS10 5NB, UK
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16
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Yang M, Tao J, Wu H, Guan S, Liu L, Zhang L, Deng S, He C, Ji P, Liu J, Liu G. Aanat Knockdown and Melatonin Supplementation in Embryo Development: Involvement of Mitochondrial Function and DNA Methylation. Antioxid Redox Signal 2019; 30:2050-2065. [PMID: 30343588 DOI: 10.1089/ars.2018.7555] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Aims: In addition to pineal gland, many cells, tissues, and organs also synthesize melatonin (N-acetyl-5-methoxytryptamine). Embryos are a group of special cells and whether they can synthesize melatonin is still an open question. However, melatonin application promoted embryo development in many species in in vitro condition. The purpose of this study was to investigate whether embryos can synthesize melatonin; if it is so, what are the impacts of the endogenously produced melatonin on embryo development and the associated molecular mechanisms. These have never been reported previously. Results: Melatonin synthesis was observed at different stages of embryonic development. Aanat (aralkylamine N-acetyltransferase), a rate-limiting enzyme for melatonin production, was found to mostly localize in the mitochondria. Aanat knockdown significantly impeded embryonic development, and melatonin supplementation rescued it. The potential mechanisms might be that melatonin preserved mitochondrial intact and its function, thus providing sufficient adenosine 5'-triphosphate for the embryo development. In addition, melatonin scavenged intracellular reactive oxygen species (ROS) and reduced the DNA mutation induced by oxidative stress. In the molecular level, Aanat knockdown reduced tet methylcytosine dioxygenase 2 (Tet2) expression and DNA demethylation in blastocyst and melatonin supplementation rescued these processes. Innovation: This is the first report to show that embryos synthesize melatonin, and its synthetic enzyme Aanat was located in the mitochondria of embryos. An effect of melatonin is to maintain Tet2 expression and normal methylation status, and thereby promote embryonic development. Conclusion: Embryos can produce melatonin that reduces ROS production, preserves mitochondrial function, and maintains Tet2 expression and the normal DNA methylation.
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Affiliation(s)
- Minghui Yang
- 1 National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Jingli Tao
- 1 National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Hao Wu
- 1 National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shengyu Guan
- 1 National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Lixi Liu
- 1 National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Lu Zhang
- 1 National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Shoulong Deng
- 2 State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Changjiu He
- 1 National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, China.,3 College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Pengyun Ji
- 1 National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Jinghao Liu
- 4 Laboratory Animal Centre, Peking University, Beijing, China
| | - Guoshi Liu
- 1 National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, China
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17
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Kochmanski J, Goodrich JM, Peterson KE, Lumeng JC, Dolinoy DC. Neonatal bloodspot DNA methylation patterns are associated with childhood weight status in the Healthy Families Project. Pediatr Res 2019; 85:848-855. [PMID: 30425339 PMCID: PMC6494701 DOI: 10.1038/s41390-018-0227-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 09/19/2018] [Accepted: 10/14/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND This study measured longitudinal DNA methylation dynamics at growth-related genes during childhood, and then tested whether DNA methylation at various stages of childhood was associated with obesity status. METHODS Using neonatal bloodspot (n = 132) and matched childhood blood samples (n = 65), DNA methylation was quantified at a repetitive element (long interspersed nuclear element-1 (LINE-1)), two imprinted genes (IGF2, H19), and four non-imprinted genes (LEP, PPARA, ESR1, SREBF1) related to growth and adiposity. Logistic regression was used to test whether neonatal bloodspot DNA methylation at target genes was associated with log odds of obesity (Y/N) in children recruited from three age groups-12-24 months old (n = 40), 3-5 years of age (n = 40), and 10-12 years of age (n = 52). RESULTS In 3-5 year olds, neonatal bloodspot LINE-1 methylation was negatively associated with obesity (log odds = -0.40, p = 0.04). Across childhood age group in matched blood samples, DNA methylation levels in blood decreased (p < 0.05) at LINE-1, PPARA, ESR1, SREBF1, IGF2, and H19, and increased (p < 0.05) at LEP. CONCLUSIONS Our results suggest that age-related epigenetic changes occur at growth-related genes in the first decade of life, and that gene-specific neonatal bloodspot DNA methylation may be a useful biomarker of obesity likelihood during childhood.
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Affiliation(s)
- Joseph Kochmanski
- Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Jaclyn M Goodrich
- Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Karen E Peterson
- Nutritional Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Julie C Lumeng
- Department of Pediatrics, University of Michigan, Ann Arbor, MI, USA
| | - Dana C Dolinoy
- Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA.
- Nutritional Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA.
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18
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Yan J, Su R, Zhang W, Wei Y, Wang C, Lin L, Feng H, Yang H. Epigenetic alteration of Rho guanine nucleotide exchange Factor 11 (ARHGEF11) in cord blood samples in macrosomia exposed to intrauterine hyperglycemia. J Matern Fetal Neonatal Med 2019; 34:422-431. [PMID: 30999786 DOI: 10.1080/14767058.2019.1609929] [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] [Indexed: 12/28/2022]
Abstract
Background: Macrosomia at birth is associated with maternal hyperglycemia and leads to subsequent susceptibility to obesity, abnormal glucose metabolism, hypertension, and dyslipidemia in offspring. Epigenetic reprogramming has been reported to be involved in the development of human diseases caused by suboptimal environmental or nutritional factors. The study was aiming to explore epigenetic mechanism influences on macrosomic infants exposed to intrauterine hyperglycemia. We performed a genome-wide analysis of DNA methylation in cord blood from macrosomic infants born to women with gestational diabetes in order to identify genes related to fetal growth or early adipose tissue development.Methods: To analyze the epigenetic patterns in umbilical cord blood in gestational diabetes mellitus (GDM), we collected umbilical cord blood from women with GDM (mean pregestational BMI of 24.4 kg/m2 and mean neonatal birth weight of 4366 g) and normal glucose-tolerant women (mean pregestational BMI of 19.8 kg/m2 and mean neonatal birth weight of 3166 g). Differentially methylated genes in the GDM group were identified using the Infinium HumanMethylation450 BeadChip array.Results: A total of 1251 genes were differentially methylated compared to the controls (p < .01). The methylation microarray data showed that two specific CpG sites (cg12604331 and cg08480098) in the gene body of ARHGEF11 were significantly hypomethylated in the cord blood in macrosomic infants. Altered DNA methylation levels of ARHGEF11 were negatively correlated with glucose levels and neonatal birth weight.Conclusions: Exposure to adverse intrauterine environments can alter fetal development, such as by affecting the nutritional status of the fetus. Such exposure can also result in significant epigenetic modifications, including DNA methylation, which could serve as a potential marker for nutrition and metabolic conditions at the neonatal stage or even in the adult.
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Affiliation(s)
- Jie Yan
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China.,Beijing Key Laboratory of Maternal Fetal Medicine of Gestational Diabetes Mellitus, Beijing, China
| | - Rina Su
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China.,Beijing Key Laboratory of Maternal Fetal Medicine of Gestational Diabetes Mellitus, Beijing, China
| | - Wanyi Zhang
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China.,Beijing Key Laboratory of Maternal Fetal Medicine of Gestational Diabetes Mellitus, Beijing, China
| | - Yumei Wei
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China.,Beijing Key Laboratory of Maternal Fetal Medicine of Gestational Diabetes Mellitus, Beijing, China
| | - Chen Wang
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China.,Beijing Key Laboratory of Maternal Fetal Medicine of Gestational Diabetes Mellitus, Beijing, China
| | - Li Lin
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China.,Beijing Key Laboratory of Maternal Fetal Medicine of Gestational Diabetes Mellitus, Beijing, China
| | - Hui Feng
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China.,Beijing Key Laboratory of Maternal Fetal Medicine of Gestational Diabetes Mellitus, Beijing, China
| | - Huixia Yang
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China.,Beijing Key Laboratory of Maternal Fetal Medicine of Gestational Diabetes Mellitus, Beijing, China
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Monteagudo-Sánchez A, Sánchez-Delgado M, Mora JRH, Santamaría NT, Gratacós E, Esteller M, de Heredia ML, Nunes V, Choux C, Fauque P, de Nanclares GP, Anton L, Elovitz MA, Iglesias-Platas I, Monk D. Differences in expression rather than methylation at placenta-specific imprinted loci is associated with intrauterine growth restriction. Clin Epigenetics 2019; 11:35. [PMID: 30808399 PMCID: PMC6390544 DOI: 10.1186/s13148-019-0630-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 02/08/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Genome-wide studies have begun to link subtle variations in both allelic DNA methylation and parent-of-origin genetic effects with early development. Numerous reports have highlighted that the placenta plays a critical role in coordinating fetal growth, with many key functions regulated by genomic imprinting. With the recent description of wide-spread polymorphic placenta-specific imprinting, the molecular mechanisms leading to this curious polymorphic epigenetic phenomenon is unknown, as is their involvement in pregnancies complications. RESULTS Profiling of 35 ubiquitous and 112 placenta-specific imprinted differentially methylated regions (DMRs) using high-density methylation arrays and pyrosequencing revealed isolated aberrant methylation at ubiquitous DMRs as well as abundant hypomethylation at placenta-specific DMRs. Analysis of the underlying chromatin state revealed that the polymorphic nature is not only evident at the level of allelic methylation, but DMRs can also adopt an unusual epigenetic signature where the underlying histones are biallelically enrichment of H3K4 methylation, a modification normally mutually exclusive with DNA methylation. Quantitative expression analysis in placenta identified two genes, GPR1-AS1 and ZDBF2, that were differentially expressed between IUGRs and control samples after adjusting for clinical factors, revealing coordinated deregulation at the chromosome 2q33 imprinted locus. CONCLUSIONS DNA methylation is less stable at placenta-specific imprinted DMRs compared to ubiquitous DMRs and contributes to privileged state of the placenta epigenome. IUGR-associated expression differences were identified for several imprinted transcripts independent of allelic methylation. Further work is required to determine if these differences are the cause IUGR or reflect unique adaption by the placenta to developmental stresses.
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Affiliation(s)
- Ana Monteagudo-Sánchez
- Imprinting and Cancer Group, Cancer Epigenetics and Biology Program, Bellvitge Biomedical Research Institute - IDIBELL, Av. Gran Via de L'Hospotalet 199-203, 08907 L'Hospitalet de Llobregat, Barcelona, Spain
| | - Marta Sánchez-Delgado
- Imprinting and Cancer Group, Cancer Epigenetics and Biology Program, Bellvitge Biomedical Research Institute - IDIBELL, Av. Gran Via de L'Hospotalet 199-203, 08907 L'Hospitalet de Llobregat, Barcelona, Spain
| | - Jose Ramon Hernandez Mora
- Imprinting and Cancer Group, Cancer Epigenetics and Biology Program, Bellvitge Biomedical Research Institute - IDIBELL, Av. Gran Via de L'Hospotalet 199-203, 08907 L'Hospitalet de Llobregat, Barcelona, Spain
| | - Nuria Tubío Santamaría
- Imprinting and Cancer Group, Cancer Epigenetics and Biology Program, Bellvitge Biomedical Research Institute - IDIBELL, Av. Gran Via de L'Hospotalet 199-203, 08907 L'Hospitalet de Llobregat, Barcelona, Spain.,Leibniz Institute on Aging, Jena, Germany
| | - Eduard Gratacós
- Fetal I+D Fetal Medicine Research Center, BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine, Hospital Clínic and Hospital Sant Joan de Déu, Barcelona, Spain
| | - Manel Esteller
- Cancer Epigenetics group, Cancer Epigenetics and Biology Program, Bellvitge Biomedical Research Institute - IDIBELL, Gran via, L'Hospitalet de Llobregat, Barcelona, Spain.,Department of Physiological Sciences II, School of Medicine, University of Barcelona, Barcelona, Catalonia, Spain.,Institucio Catalana de Recerca i Estudis Avançats, Barcelona, Catalonia, Spain
| | - Miguel López de Heredia
- Human Molecular Genetics group, Genes, disease and Therapy Program, Bellvitge Biomedical Research Institute - IDIBELL, Av. Gran Via de L'Hospitalet 199-203, 08907, L'Hospitalet de Llobregat, Barcelona, Spain
| | - Virgina Nunes
- Department of Physiological Sciences II, School of Medicine, University of Barcelona, Barcelona, Catalonia, Spain.,Human Molecular Genetics group, Genes, disease and Therapy Program, Bellvitge Biomedical Research Institute - IDIBELL, Av. Gran Via de L'Hospitalet 199-203, 08907, L'Hospitalet de Llobregat, Barcelona, Spain.,Centro de Investigaciòn Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
| | - Cecile Choux
- Université Bourgogne Franche-Comté - INSERM UMR1231, F-21000, Dijon, France
| | - Patricia Fauque
- Université Bourgogne Franche-Comté - INSERM UMR1231, F-21000, Dijon, France
| | - Guiomar Perez de Nanclares
- (Epi) Genetics Laboratory, BioAraba National Health Institute, Hospital Universitario Araba-Txagorritxu, Vitoria-Gasteiz, Alava, Spain
| | - Lauren Anton
- Maternal and Child Health Research Program, Department of Obstetrics and Gynecology, Center for Research on Reproduction and Women's Health, University of Pennsylvania, Philadelphia, USA
| | - Michal A Elovitz
- Maternal and Child Health Research Program, Department of Obstetrics and Gynecology, Center for Research on Reproduction and Women's Health, University of Pennsylvania, Philadelphia, USA
| | - Isabel Iglesias-Platas
- GReN (Grup de Reçerca en Neonatologia), BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine, Institut de Reçerca Sant Joan de Déu, Barcelona, Spain
| | - David Monk
- Imprinting and Cancer Group, Cancer Epigenetics and Biology Program, Bellvitge Biomedical Research Institute - IDIBELL, Av. Gran Via de L'Hospotalet 199-203, 08907 L'Hospitalet de Llobregat, Barcelona, Spain.
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20
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James P, Sajjadi S, Tomar AS, Saffari A, Fall CHD, Prentice AM, Shrestha S, Issarapu P, Yadav DK, Kaur L, Lillycrop K, Silver M, Chandak GR. Candidate genes linking maternal nutrient exposure to offspring health via DNA methylation: a review of existing evidence in humans with specific focus on one-carbon metabolism. Int J Epidemiol 2018; 47:1910-1937. [PMID: 30137462 PMCID: PMC6280938 DOI: 10.1093/ije/dyy153] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/04/2018] [Indexed: 12/13/2022] Open
Abstract
Background Mounting evidence suggests that nutritional exposures during pregnancy influence the fetal epigenome, and that these epigenetic changes can persist postnatally, with implications for disease risk across the life course. Methods We review human intergenerational studies using a three-part search strategy. Search 1 investigates associations between preconceptional or pregnancy nutritional exposures, focusing on one-carbon metabolism, and offspring DNA methylation. Search 2 considers associations between offspring DNA methylation at genes found in the first search and growth-related, cardiometabolic and cognitive outcomes. Search 3 isolates those studies explicitly linking maternal nutritional exposure to offspring phenotype via DNA methylation. Finally, we compile all candidate genes and regions of interest identified in the searches and describe their genomic locations, annotations and coverage on the Illumina Infinium Methylation beadchip arrays. Results We summarize findings from the 34 studies found in the first search, the 31 studies found in the second search and the eight studies found in the third search. We provide details of all regions of interest within 45 genes captured by this review. Conclusions Many studies have investigated imprinted genes as priority loci, but with the adoption of microarray-based platforms other candidate genes and gene classes are now emerging. Despite a wealth of information, the current literature is characterized by heterogeneous exposures and outcomes, and mostly comprise observational associations that are frequently underpowered. The synthesis of current knowledge provided by this review identifies research needs on the pathway to developing possible early life interventions to optimize lifelong health.
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Affiliation(s)
- Philip James
- MRC Unit The Gambia at the London School of Hygiene and Tropical Medicine, London, UK
| | - Sara Sajjadi
- Genomic Research on Complex Diseases (GRC Group), CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India
| | - Ashutosh Singh Tomar
- Genomic Research on Complex Diseases (GRC Group), CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India
| | - Ayden Saffari
- MRC Unit The Gambia at the London School of Hygiene and Tropical Medicine, London, UK
| | - Caroline H D Fall
- MRC Life course Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, UK
| | - Andrew M Prentice
- MRC Unit The Gambia at the London School of Hygiene and Tropical Medicine, London, UK
| | - Smeeta Shrestha
- Genomic Research on Complex Diseases (GRC Group), CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India
- School of Basic and Applied Sciences, Dayananda Sagar University, Bangalore, India
| | - Prachand Issarapu
- Genomic Research on Complex Diseases (GRC Group), CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India
| | - Dilip Kumar Yadav
- Genomic Research on Complex Diseases (GRC Group), CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India
| | - Lovejeet Kaur
- Genomic Research on Complex Diseases (GRC Group), CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India
| | - Karen Lillycrop
- Research Centre for Biological Sciences, Institute of Developmental Sciences, University of Southampton, Southampton, UK
| | - Matt Silver
- MRC Unit The Gambia at the London School of Hygiene and Tropical Medicine, London, UK
| | - Giriraj R Chandak
- Genomic Research on Complex Diseases (GRC Group), CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India
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21
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Tzika E, Dreker T, Imhof A. Epigenetics and Metabolism in Health and Disease. Front Genet 2018; 9:361. [PMID: 30279699 PMCID: PMC6153363 DOI: 10.3389/fgene.2018.00361] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 08/21/2018] [Indexed: 01/09/2023] Open
Abstract
In the next 10 years, one billion people are estimated to suffer from disabling consequences of metabolic disorders, making them the number one noncommunicable disease on a global scale by 2030. Lots of risk factors such as dietary intake, lack of exercise and other life style behaviors are considered to play a role in the development of metabolic disorders. Despite the efforts that have been undertaken to unravel their potential causes, the underlying molecular mechanisms remain elusive. Evidence suggests that the pathogenesis involves changes on chromatin and chromatin-modifying enzymes, which can contribute to a persistent dysregulated metabolic phenotype. Indeed, a rising number of studies links epigenetic alterations with the diagnosis and prognosis of metabolic disorders. A prerequisite for exploiting these findings for pharmacological intervention is a detailed understanding of how differential epigenetic modifications control cell metabolism. In this mini review, we summarize the recent advances in uncovering the interplay between epigenetics and metabolic pathways on a cellular level and highlight potential new avenues for alternative treatment strategies.
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Affiliation(s)
- Evangelia Tzika
- 4SC AG, Translational Pharmacology, Munich, Germany.,Faculty of Medicine, Ludwig Maximilians University of Munich, Munich, Germany
| | | | - Axel Imhof
- Faculty of Medicine, Ludwig Maximilians University of Munich, Munich, Germany.,Protein Analysis Unit (ZfP), Biomedical Center, Ludwig Maximilians University of Munich, Munich, Germany
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22
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Shi Y, Liu M, Long X, Chen D, Zheng H, Chen S. Effect of abnormal GpG methylation in the second trimester of pregnancy on adverse health risk of offspring. Exp Ther Med 2018; 16:2875-2880. [PMID: 30214509 PMCID: PMC6125837 DOI: 10.3892/etm.2018.6560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 07/04/2018] [Indexed: 01/18/2023] Open
Abstract
Effect of abnormal GpG methylation in amniotic fluid cells during the second trimester of pregnancy on adverse health risk of offspring was investigated. In total, 237 sets of amniotic fluid cells were collected from patients who received prenatal diagnosis in the Third Affiliated Hospital of Guangzhou Medical University (Guangzhou, China) from April 2010 to October 2011. Among them, 156 sets were from singleton and 81 sets were from twins. H19 gene was amplified by PCR, and the product was purified and pyrosequencing was used to detect the DNA methylation level of GapG. Follow-up records of the birth outcomes of pregnant women's offspring were collected. Positive rate of DNA amplification in 200 cases of amniotic fluid cells was 84.4% (200/237). Average age of singleton pregnancies was higher than that of twins (P<0.05), and no significant differences were found in gestational age and PCR amplification rate (P>0.05). There was no difference in the methylation level of GapG between singleton and twins (P>0.05), but the abnormal methylation rate of GapG1 in twin fetuses was significantly higher than that of singleton (20.3 vs. 3.6%, χ2=8.364, P=0.004). Offspring sex, singleton or twins, mode of delivery, time of pregnancy, and low birth weight showed no significant effect on GapG methylation level of H19 in the second trimester of pregnancy. No offspring deformities were found regardless of the increased or decreased degree of methylation (P>0.05). The number of fetuses born may cause abnormal GapG1 methylation, but no effect of GapG methylation on the adverse health risk of offspring was found.
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Affiliation(s)
- Yu Shi
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China.,Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory for Reproduction and Genetics of Guangdong Higher-Education Institutes, Guangzhou Institute of Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, P.R. China
| | - Mingxing Liu
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory for Reproduction and Genetics of Guangdong Higher-Education Institutes, Guangzhou Institute of Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, P.R. China
| | - Xiaolin Long
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory for Reproduction and Genetics of Guangdong Higher-Education Institutes, Guangzhou Institute of Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, P.R. China
| | - Dunjin Chen
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory for Reproduction and Genetics of Guangdong Higher-Education Institutes, Guangzhou Institute of Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, P.R. China
| | - Haiyan Zheng
- Key Laboratory for Major Obstetric Diseases of Guangdong Province, Key Laboratory for Reproduction and Genetics of Guangdong Higher-Education Institutes, Guangzhou Institute of Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510150, P.R. China
| | - Shiling Chen
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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23
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House JS, Mendez M, Maguire RL, Gonzalez-Nahm S, Huang Z, Daniels J, Murphy SK, Fuemmeler BF, Wright FA, Hoyo C. Periconceptional Maternal Mediterranean Diet Is Associated With Favorable Offspring Behaviors and Altered CpG Methylation of Imprinted Genes. Front Cell Dev Biol 2018; 6:107. [PMID: 30246009 PMCID: PMC6137242 DOI: 10.3389/fcell.2018.00107] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 08/20/2018] [Indexed: 12/28/2022] Open
Abstract
Background: Maternal diet during pregnancy has been shown to influence the child neuro-developmental outcomes. Studies examining effects of dietary patterns on offspring behavior are sparse. Objective: Determine if maternal adherence to a Mediterranean diet is associated with child behavioral outcomes assessed early in life, and to evaluate the role of differentially methylated regions (DMRs) regulating genomically imprinted genes in these associations. Methods: Among 325 mother/infant pairs, we used regression models to evaluate the association between tertiles of maternal periconceptional Mediterranean diet adherence (MDA) scores derived from a Food Frequency Questionnaire, and social and emotional scores derived from the Infant Toddler Social and Emotional Assessment (ITSEA) questionnaire in the second year of life. Methylation of nine genomically imprinted genes was measured to determine if MDA was associated with CpG methylation. Results: Child depression was inversely associated with maternal MDA (Bonferroni-corrected p = 0.041). While controlling for false-discovery, compared to offspring of women with the lowest MDA tertile, those with MDA scores in middle and high MDA tertiles had decreased odds for atypical behaviors [OR (95% CI) = 0.40 (0.20, 0.78) for middle and 0.40 (0.17, 0.92) for highest tertile], for maladaptive behaviors [0.37 (0.18, 0.72) for middle tertile and 0.42 (0.18, 0.95) for highest tertile] and for an index of autism spectrum disorder behaviors [0.46 (0.23, 0.90) for middle and 0.35 (0.15, 0.80) for highest tertile]. Offspring of women with the highest MDA tertile were less likely to exhibit depressive [OR = 0.28 (0.12, 0.64)] and anxiety [0.42 (0.18, 0.97)] behaviors and increased odds of social relatedness [2.31 (1.04, 5.19)] behaviors when compared to low MDA mothers. Some associations varied by sex. Perinatal MDA score was associated with methylation differences for imprinted control regions of PEG10/SGCE [females: Beta (95% CI) = 1.66 (0.52, 2.80) - Bonferroni-corrected p = 0.048; males: -0.56 (-1.13, -0.00)], as well as both MEG3 and IGF2 in males [0.97 (0.00, 1.94)] and -0.92 (-1.65, -0.19) respectively. Conclusion: In this ethnically diverse cohort, maternal adherence to a Mediterranean diet in early pregnancy was associated with favorable neurobehavioral outcomes in early childhood and with sex-dependent methylation differences of MEG3, IGF2, and SGCE/PEG10 DMRs.
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Affiliation(s)
- John S House
- Bioinformatics Research Center, North Carolina State University, Raleigh, NC, United States.,Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, United States
| | - Michelle Mendez
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA, United States
| | - Rachel L Maguire
- Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, United States.,Department of Biological Sciences, North Carolina State University, Raleigh, NC, United States
| | - Sarah Gonzalez-Nahm
- Department of Health, Behavior and Society, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
| | - Zhiqing Huang
- Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, NC, United States
| | - Julie Daniels
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Susan K Murphy
- Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, NC, United States
| | - Bernard F Fuemmeler
- Department of Health Behavior and Policy, Virginia Commonwealth University, Richmond, VA, United States
| | - Fred A Wright
- Bioinformatics Research Center, North Carolina State University, Raleigh, NC, United States.,Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, United States.,Department of Biological Sciences, North Carolina State University, Raleigh, NC, United States.,Department of Statistics, North Carolina State University, Raleigh, NC, United States
| | - Cathrine Hoyo
- Center for Human Health and the Environment, North Carolina State University, Raleigh, NC, United States.,Department of Biological Sciences, North Carolina State University, Raleigh, NC, United States
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24
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Maddock J, Wulaningsih W, Fernandez JC, Ploubidis GB, Goodman A, Bell J, Kuh D, Hardy R. Associations between body size, nutrition and socioeconomic position in early life and the epigenome: A systematic review. PLoS One 2018; 13:e0201672. [PMID: 30096154 PMCID: PMC6086410 DOI: 10.1371/journal.pone.0201672] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 07/18/2018] [Indexed: 12/19/2022] Open
Abstract
Background Body size, nutrition and socioeconomic position (SEP) in early life have been associated with a wide range of long-term health effects. Epigenetics is one possible mechanism through which these early life exposures can impact later life health. We conducted a systematic review examining the observational evidence for the impact of body size, nutrition and SEP in early life on the epigenome in humans. Methods This systematic review is registered with the PROSPERO database (registration number: CRD42016050193). Three datasets were simultaneously searched using Ovid and the resulting studies were evaluated by at least two independent reviewers. Studies measuring epigenetic markers either at the same time as, or after, the early life exposure and have a measure of body size, nutrition or SEP in early life (up to 12 years), written in English and from a community-dwelling participants were included. Results We identified 90 eligible studies. Seventeen of these papers examined more than one early life exposure of interest. Fifty six papers examined body size, 37 nutrition and 17 SEP. All of the included papers examined DNA methylation (DNAm) as the epigenetic marker. Overall there was no strong evidence for a consistent association between these early life variables in DNAm which may be due to the heterogeneous study designs, data collection methods and statistical analyses. Conclusions Despite these inconclusive results, the hypothesis that the early life environment can impact DNAm, potentially persisting into adult life, was supported by some studies and warrants further investigation. We provide recommendations for future studies.
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Affiliation(s)
- Jane Maddock
- MRC Unit for Lifelong Health and Ageing, Institute of Cardiovascular Science, University College London, London, United Kingdom
- * E-mail:
| | - Wahyu Wulaningsih
- MRC Unit for Lifelong Health and Ageing, Institute of Cardiovascular Science, University College London, London, United Kingdom
| | - Juan Castillo Fernandez
- Department of Twin Research and Genetic Epidemiology, King's College London, London, United Kingdom
| | - George B. Ploubidis
- Centre for Longitudinal Studies, UCL Institute of Education, University College London, London, United Kingdom
| | - Alissa Goodman
- Centre for Longitudinal Studies, UCL Institute of Education, University College London, London, United Kingdom
| | - Jordana Bell
- Department of Twin Research and Genetic Epidemiology, King's College London, London, United Kingdom
| | - Diana Kuh
- MRC Unit for Lifelong Health and Ageing, Institute of Cardiovascular Science, University College London, London, United Kingdom
| | - Rebecca Hardy
- MRC Unit for Lifelong Health and Ageing, Institute of Cardiovascular Science, University College London, London, United Kingdom
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25
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Provenzi L, Carli PD, Fumagalli M, Giorda R, Casavant S, Beri S, Citterio A, D'Agata A, Morandi F, Mosca F, Borgatti R, Montirosso R. Very preterm birth is associated with PLAGL1 gene hypomethylation at birth and discharge. Epigenomics 2018; 10:1121-1130. [PMID: 30070601 DOI: 10.2217/epi-2017-0123] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
AIM Recent findings show that DNA methylation is susceptible to very preterm (VPT) birth and to the experience of the early stay in the neonatal intensive care unit. The aim of the study was to compare PLAGL1 methylation between VPT and full-term (FT) infants at birth as well as between VPT infants at discharge and FT infants at birth. METHODS DNA was collected from cord blood of 56 VPT and 27 FT infants at birth and from peripheral blood in VPT infants at neonatal intensive care unit discharge. Sociodemographic and neonatal variables were considered. RESULTS PLAGL1 methylation at birth and at discharge were highly correlated in VPT infants. Lower methylation emerged in VPT infants at birth and discharge compared to FT counterparts. CONCLUSION PLAGL1 hypomethylation emerged as a potential epigenetic mark of VPT birth. Future research is warranted to assess the functional consequences of PLAGL1 diminished methylation in VPT infants' development.
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Affiliation(s)
- Livio Provenzi
- 0-3 Center for the at-Risk Infant, Scientific Institute, IRCCS Eugenio Medea, 238422, Bosisio Parini, Italy
| | - Pietro De Carli
- 0-3 Center for the at-Risk Infant, Scientific Institute, IRCCS Eugenio Medea, 238422, Bosisio Parini, Italy
| | - Monica Fumagalli
- NICU, Department of Clinical Sciences & Community Health, Università degli Studi di Milano, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 201223, Milan, Italy
| | - Roberto Giorda
- Molecular Biology Laboratory, Scientific Institute, IRCCS Eugenio Medea, 238424, Bosisio Parini, Italy
| | - Sharon Casavant
- School of Nursing, University of Connecticut, Storrs, CT, 060325, USA
| | - Silvana Beri
- Molecular Biology Laboratory, Scientific Institute, IRCCS Eugenio Medea, 238424, Bosisio Parini, Italy
| | - Andrea Citterio
- Molecular Biology Laboratory, Scientific Institute, IRCCS Eugenio Medea, 238424, Bosisio Parini, Italy
| | - Amy D'Agata
- College of Nursing, University of Rhode Island, Kingston, RI, 028816, USA
| | | | - Fabio Mosca
- NICU, Department of Clinical Sciences & Community Health, Università degli Studi di Milano, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 201223, Milan, Italy
| | - Renato Borgatti
- Neuropsychiatry & Neurorehabilitation Unit, Scientific Institute, IRCCS Eugenio Medea, 238422, Bosisio Parini, Italy
| | - Rosario Montirosso
- 0-3 Center for the at-Risk Infant, Scientific Institute, IRCCS Eugenio Medea, 238422, Bosisio Parini, Italy
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26
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Mangwiro YTM, Cuffe JSM, Briffa JF, Mahizir D, Anevska K, Jefferies AJ, Hosseini S, Romano T, Moritz KM, Wlodek ME. Maternal exercise in rats upregulates the placental insulin-like growth factor system with diet- and sex-specific responses: minimal effects in mothers born growth restricted. J Physiol 2018; 596:5947-5964. [PMID: 29953638 DOI: 10.1113/jp275758] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 06/07/2018] [Indexed: 12/18/2022] Open
Abstract
KEY POINTS The placental insulin-like growth factor (IGF) system is critical for normal fetoplacental growth, which is dysregulated following several pregnancy perturbations including uteroplacental insufficiency and maternal obesity. We report that the IGF system was altered in placentae of mothers born growth restricted compared to normal birth weight mothers, with maternal diet- and fetal sex-specific responses. Additionally, we report increased body weight and plasma IGF1 concentrations in fetuses from chow-fed normal birth weight mothers that exercised prior to and continued during pregnancy compared to sedentary mothers. Exercise initiated during pregnancy, on the other hand, resulted in placental morphological alterations and increased IGF1 and IGF1R protein expression, which may in part be modulated by reduced Let 7f-1 miRNA abundance. Growth restriction of mothers before birth and exercise differentially regulate the placental IGF system with diet- and sex-specific responses, probably as a means to improve fetoplacental growth and development, and hence neonatal survival. This increased neonatal survival may prevent adult disease onset. ABSTRACT The insulin-like growth factor (IGF) system regulates fetoplacental growth and plays a role in disease programming. Dysregulation of the IGF system is implicated in several pregnancy perturbations associated with altered fetal growth, including intrauterine growth restriction and maternal obesity. Limited human studies have demonstrated that maternal exercise enhances fetoplacental growth and decreases cord IGF ligands, which may restore the placental IGF system in complicated pregnancies. This study investigated the impact maternal exercise has on the placental IGF system in placentae from mothers born growth restricted and if these outcomes are dependent on maternal diet or fetal sex. Uteroplacental insufficiency (Restricted) or sham (Control) surgery was induced on embryonic day (E) 18 in Wistar-Kyoto rats. F1 offspring were fed a chow or high-fat diet from weaning, and at 16 weeks were randomly allocated an exercise protocol: Sedentary, Exercised prior to and during pregnancy (Exercise), or Exercised during pregnancy only (PregEx). Females were mated (20 weeks) with placentae associated with F2 fetuses collected at E20. The placental IGF system mRNA abundance and placental morphology was altered in mothers born growth restricted. Exercise increased fetal weight and Control plasma IGF1 concentrations, and decreased female placental weight. PregEx did not influence fetoplacental growth but increased placental IGF1 and IGF1R (potentially modulated by reduced Let 7f-1 miRNA) and decreased placental IGF2 protein. Importantly, these placental IGF system changes occurred with sex-specific responses. These data highlight that exercise differently influences fetoplacental growth and the placental IGF system depending on maternal exercise initiation, which may prevent the transgenerational transmission of deficits and dysfunction.
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Affiliation(s)
- Yeukai T M Mangwiro
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, VIC, 3083, Australia.,Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - James S M Cuffe
- School of Biomedical Sciences, The University of Queensland, St. Lucia, QLD, 4072, Australia.,School of Medical Science and Menzies Health Institute Queensland, Griffith University, Southport, QLD, 4215, Australia
| | - Jessica F Briffa
- Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Dayana Mahizir
- Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Kristina Anevska
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, VIC, 3083, Australia
| | - Andrew J Jefferies
- Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Sogand Hosseini
- Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Tania Romano
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, VIC, 3083, Australia
| | - Karen M Moritz
- School of Biomedical Sciences, The University of Queensland, St. Lucia, QLD, 4072, Australia.,Child Health Research Centre, The University of Queensland, South Brisbane, QLD, 4101, Australia
| | - Mary E Wlodek
- Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
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27
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Zanetti D, Tikkanen E, Gustafsson S, Priest JR, Burgess S, Ingelsson E. Birthweight, Type 2 Diabetes Mellitus, and Cardiovascular Disease: Addressing the Barker Hypothesis With Mendelian Randomization. CIRCULATION. GENOMIC AND PRECISION MEDICINE 2018; 11:e002054. [PMID: 29875125 PMCID: PMC6447084 DOI: 10.1161/circgen.117.002054] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 03/01/2018] [Indexed: 01/17/2023]
Abstract
BACKGROUND Low birthweight has been associated with a higher risk of hypertension, type 2 diabetes mellitus (T2D), and cardiovascular disease. The Barker hypothesis posits that intrauterine growth restriction resulting in lower birthweight is causal for these diseases, but causality is difficult to infer from observational studies. METHODS We performed regression analyses to assess associations of birthweight with cardiovascular disease and T2D in 237 631 individuals from the UK Biobank. Further, we assessed the causal relationship of such associations using Mendelian randomization. RESULTS In the observational analyses, birthweight showed inverse associations with systolic and diastolic blood pressure (β, -0.83 and -0.26; per raw unit in outcomes and SD change in birthweight; 95% confidence interval [CI], -0.90 to -0.75 and -0.31 to -0.22, respectively), T2D (odds ratio, 0.83; 95% CI, 0.79-0.87), lipid-lowering treatment (odds ratio, 0.84; 95% CI, 0.81-0.86), and coronary artery disease (hazard ratio, 0.85; 95% CI, 0.78-0.94), whereas the associations with adult body mass index and body fat (β, 0.04 and 0.02; per SD change in outcomes and birthweight; 95% CI, 0.03-0.04 and 0.01-0.02, respectively) were positive. The Mendelian randomization analyses indicated inverse causal associations of birthweight with low-density lipoprotein cholesterol, 2-hour glucose, coronary artery disease, and T2D and positive causal association with body mass index but no associations with blood pressure. CONCLUSIONS Our study indicates that lower birthweight, used as a proxy for intrauterine growth retardation, is causally related with increased susceptibility to coronary artery disease and T2D. This causal relationship is not mediated by adult obesity or hypertension.
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Affiliation(s)
- Daniela Zanetti
- Division of Cardiovascular Medicine, Department of Medicine (D.Z., E.T., E.I.)
- Division of Cardiology, Department of Pediatrics (J.R.P.)
| | - Emmi Tikkanen
- Division of Cardiovascular Medicine, Department of Medicine (D.Z., E.T., E.I.)
| | - Stefan Gustafsson
- Stanford University School of Medicine, CA. Department of Medical Sciences, Molecular Epidemiology and Science for Life Laboratory, Uppsala University, Sweden (S.G., E.I.)
| | - James R Priest
- Division of Cardiology, Department of Pediatrics (J.R.P.)
| | - Stephen Burgess
- MRC Biostatistics Unit and Department of Public Health and Primary Care, University of Cambridge, United Kingdom (S.B.)
| | - Erik Ingelsson
- Division of Cardiovascular Medicine, Department of Medicine (D.Z., E.T., E.I.),
- and Stanford Cardiovascular Institute (D.Z., E.I.)
- Stanford University School of Medicine, CA. Department of Medical Sciences, Molecular Epidemiology and Science for Life Laboratory, Uppsala University, Sweden (S.G., E.I.)
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28
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Knopik VS, Marceau K, Bidwell LC, Rolan E. Prenatal substance exposure and offspring development: Does DNA methylation play a role? Neurotoxicol Teratol 2018; 71:50-63. [PMID: 29408446 DOI: 10.1016/j.ntt.2018.01.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 01/12/2018] [Accepted: 01/24/2018] [Indexed: 12/17/2022]
Abstract
The period of in utero development is one of the most critical windows during which adverse conditions and exposures may influence the growth and development of the fetus as well as its future postnatal health and behavior. Maternal substance use during pregnancy remains a relatively common but nonetheless hazardous in utero exposure. For example, previous epidemiological studies have associated prenatal substance exposure with reduced birth weight, poor developmental and psychological outcomes, and increased risk for diseases and behavioral disorders (e.g., externalizing behaviors like ADHD, conduct disorder, and substance use) later in life. Researchers are now learning that many of the mechanisms whereby adverse in utero exposures may affect key pathways crucial for proper fetal growth and development are epigenetic in nature, with the majority of work in humans considering DNA methylation specifically. This review will explore the research to date on epigenetic alterations tied to maternal substance use during pregnancy and will also discuss the possible role of DNA methylation in the robust relationship between maternal substance use and later behavioral and developmental sequelae in offspring.
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Affiliation(s)
- Valerie S Knopik
- Department of Human Development and Family Studies, Purdue University, West Lafayette, IN, USA.
| | - Kristine Marceau
- Department of Human Development and Family Studies, Purdue University, West Lafayette, IN, USA
| | - L Cinnamon Bidwell
- Institute of Cognitive Science, University of Colorado, Boulder, CO, USA
| | - Emily Rolan
- Department of Human Development and Family Studies, Purdue University, West Lafayette, IN, USA
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29
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Illum LRH, Bak ST, Lund S, Nielsen AL. DNA methylation in epigenetic inheritance of metabolic diseases through the male germ line. J Mol Endocrinol 2018; 60:R39-R56. [PMID: 29203518 DOI: 10.1530/jme-17-0189] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 12/04/2017] [Indexed: 12/26/2022]
Abstract
The global rise in metabolic diseases can be attributed to a complex interplay between biology, behavior and environmental factors. This article reviews the current literature concerning DNA methylation-based epigenetic inheritance (intergenerational and transgenerational) of metabolic diseases through the male germ line. Included are a presentation of the basic principles for DNA methylation in developmental programming, and a description of windows of susceptibility for the inheritance of environmentally induced aberrations in DNA methylation and their associated metabolic disease phenotypes. To this end, escapees, genomic regions with the intrinsic potential to transmit acquired paternal epigenetic information across generations by escaping the extensive programmed DNA demethylation that occurs during gametogenesis and in the zygote, are described. The ongoing descriptive and functional examinations of DNA methylation in the relevant biological samples, in conjugation with analyses of non-coding RNA and histone modifications, hold promise for improved delineation of the effect size and mechanistic background for epigenetic inheritance of metabolic diseases.
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Affiliation(s)
| | - Stine Thorhauge Bak
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- Department of Clinical Medicine, Endocrinology and Diabetes, Aarhus University Hospital, Aarhus, Denmark
| | - Sten Lund
- Department of Clinical Medicine, Endocrinology and Diabetes, Aarhus University Hospital, Aarhus, Denmark
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30
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Dunford AR, Sangster JM. Maternal and paternal periconceptional nutrition as an indicator of offspring metabolic syndrome risk in later life through epigenetic imprinting: A systematic review. Diabetes Metab Syndr 2017; 11 Suppl 2:S655-S662. [PMID: 28533070 DOI: 10.1016/j.dsx.2017.04.021] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Accepted: 04/27/2017] [Indexed: 12/11/2022]
Abstract
AIMS This review examined whether maternal and paternal periconceptional nutrition effects an offspring's likelihood of developing chronic metabolic related conditions due to epigenetic imprinting. METHODS A literature search was conducted in multiple science databases and limited to studies published after 2012, in English language and peer reviewed. The data from selected articles were extracted and a qualitative approach was employed due to heterogeneity of results. RESULTS Newborns from obese fathers showed altered methylation overall and significant hypomethylation at the Insulin-like Growth Factor 2 (IGF2) gene. High maternal pre-pregnancy body mass index (BMI) was associated with altered offspring DNA methylation levels and gestational diabetes mellitus induced significantly increased methylation levels in offspring. Gestational weight gain was not associated with differentially methylated cord blood. Birth weight was higher in offspring exposed to famine in early gestation. Offspring born post maternal bariatric surgery showed a lower percentage of body fat and improved fasting insulin levels compared to siblings born pre-maternal bariatric surgery. CONCLUSIONS The available evidence suggests that poor maternal and paternal periconceptional nutrition can increase the risk of metabolic syndrome in offspring, through epigenetic imprinting. Potential parents should be advised that maintaining a healthy diet and BMI is likely to reduce the risk of metabolic syndrome in offspring.
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Affiliation(s)
- Ashley R Dunford
- Nutrition Program, School of Dentistry and Health Sciences, Charles Sturt University, Wagga Wagga, Australia
| | - Janice M Sangster
- Nutrition Program, School of Dentistry and Health Sciences, Charles Sturt University, Wagga Wagga, Australia.
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Simner C, Novakovic B, Lillycrop KA, Bell CG, Harvey NC, Cooper C, Saffery R, Lewis RM, Cleal JK. DNA methylation of amino acid transporter genes in the human placenta. Placenta 2017; 60:64-73. [PMID: 29208242 DOI: 10.1016/j.placenta.2017.10.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 10/27/2017] [Accepted: 10/30/2017] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Placental transfer of amino acids via amino acid transporters is essential for fetal growth. Little is known about the epigenetic regulation of amino acid transporters in placenta. This study investigates the DNA methylation status of amino acid transporters and their expression across gestation in human placenta. METHODS BeWo cells were treated with 5-aza-2'-deoxycytidine to inhibit methylation and assess the effects on amino acid transporter gene expression. The DNA methylation levels of amino acid transporter genes in human placenta were determined across gestation using DNA methylation array data. Placental amino acid transporter gene expression across gestation was also analysed using data from publically available Gene Expression Omnibus data sets. The expression levels of these transporters at term were established using RNA sequencing data. RESULTS Inhibition of DNA methylation in BeWo cells demonstrated that expression of specific amino acid transporters can be inversely associated with DNA methylation. Amino acid transporters expressed in term placenta generally showed low levels of promoter DNA methylation. Transporters with little or no expression in term placenta tended to be more highly methylated at gene promoter regions. The transporter genes SLC1A2, SLC1A3, SLC1A4, SLC7A5, SLC7A11 and SLC7A10 had significant changes in enhancer DNA methylation across gestation, as well as gene expression changes across gestation. CONCLUSION This study implicates DNA methylation in the regulation of amino acid transporter gene expression. However, in human placenta, DNA methylation of these genes remains low across gestation and does not always play an obvious role in regulating gene expression, despite clear evidence for differential expression as gestation proceeds.
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Affiliation(s)
- C Simner
- The Institute of Developmental Sciences, University of Southampton, UK
| | - B Novakovic
- Cancer and Disease Epigenetics, Murdoch Children's Research Institute, Royal Children's Hospital and Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia
| | - K A Lillycrop
- The Institute of Developmental Sciences, University of Southampton, UK; Centre for Biological Sciences, Faculty of Natural and Environmental Sciences, University of Southampton, Southampton SO17 1BJ, UK
| | - C G Bell
- The Institute of Developmental Sciences, University of Southampton, UK; MRC Lifecourse Epidemiology Unit, University of Southampton, UK
| | - N C Harvey
- MRC Lifecourse Epidemiology Unit, University of Southampton, UK; NIHR Southampton Biomedical Research Centre, University of Southampton, University Hospital Southampton, NHS Foundation Trust, UK
| | - C Cooper
- MRC Lifecourse Epidemiology Unit, University of Southampton, UK; NIHR Southampton Biomedical Research Centre, University of Southampton, University Hospital Southampton, NHS Foundation Trust, UK; NIHR Oxford Musculoskeletal Biomedical Research Unit, University of Oxford, UK
| | - R Saffery
- Cancer and Disease Epigenetics, Murdoch Children's Research Institute, Royal Children's Hospital and Department of Paediatrics, University of Melbourne, Parkville, VIC 3052, Australia
| | - R M Lewis
- The Institute of Developmental Sciences, University of Southampton, UK
| | - J K Cleal
- The Institute of Developmental Sciences, University of Southampton, UK.
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Associations between maternal prenatal stress, methylation changes in IGF1 and IGF2, and birth weight. J Dev Orig Health Dis 2017; 9:215-222. [PMID: 29017633 DOI: 10.1017/s2040174417000800] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Maternal stress has been linked to low birth weight in newborns. One potential pathway involves epigenetic changes at candidate genes that may mediate the effects of prenatal maternal stress on birth weight. This relationship has been documented in stress-related genes, such as NR3C1. There is less literature exploring the effect of stress on growth-related genes. IGF1 and IGF2 have been implicated in fetal growth and development, though via different mechanisms as IGF2 is under imprinting control. In this study, we tested for associations between prenatal stress, methylation of IGF1 and IGF2, and birth weight. A total of 24 mother-newborn dyads in the Democratic Republic of Congo were enrolled. Ethnographic interviews were conducted with mothers at delivery to gather culturally relevant war-related and chronic stressors. DNA methylation data were generated from maternal venous, cord blood and placental tissue samples. Multivariate regressions were used to test for associations between stress measures, DNA methylation and birth weight in each of the three tissue types. We found an association between IGF2 methylation in maternal blood and birth weight. Previous literature on the relationship between IGF2 methylation and birth weight has focused on methylation at known differentially methylated regions in cord blood or placental samples. Our findings indicate there may be links between the maternal epigenome and low birth weight that rely on mechanisms outside known imprinting pathways. It thus may be important to consider the effect of maternal exposures and epigenetic profiles on birth weight even in the setting of maternally imprinted genes such as IGF2.
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Miyaso H, Sakurai K, Takase S, Eguchi A, Watanabe M, Fukuoka H, Mori C. The methylation levels of the H19 differentially methylated region in human umbilical cords reflect newborn parameters and changes by maternal environmental factors during early pregnancy. ENVIRONMENTAL RESEARCH 2017; 157:1-8. [PMID: 28500962 DOI: 10.1016/j.envres.2017.05.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 03/28/2017] [Accepted: 05/05/2017] [Indexed: 06/07/2023]
Abstract
H19 is a tumor-suppressor gene, and changes in the methylation of the H19-differential methylation region (H19-DMR) are related to human health. However, little is known about the factors that regulate the methylation levels of H19-DMR. Several recent studies have shown that maternal environmental factors during pregnancy, such as smoking, drinking, chemical exposure, and nutrient intake, can alter the methylation levels of several genes in fetal tissues. In this study, we examined the effects of maternal factors on changes in the methylation levels of H19-DMR in the human umbilical cord (UC), an extra-embryonic tissue. Participants from the Chiba study of Mother and Children's Health (C-MACH) were enrolled in this study. Genomic DNA was extracted from UC samples, and the methylation level of H19-DMR was evaluated by methylation-sensitive high resolution melting analysis. Individual maternal and paternal factors and clinical information for newborns at birth were examined using questionnaires prepared in the C-MACH study, a brief-type self-administered diet history questionnaire (BDHQ) during early pregnancy (gestational age of 12 weeks), and medical records. Univariate and multivariate logistic regression analyses indicated that reduced H19-DMR methylation (<50% methylation) in UC tissues was positively related to decreased head circumference in newborns [odds ratio (OR) =2.82; 95% confidence intervals (CI): 1.21-6.87; p=0.0183 and OR =2.51; 95% CI: 1.02-6.46; p=0.0499, respectively]. Moreover, multiple comparison test showed that H19-DMR methylation in UC tissues was significantly reduced in the low calorie group (intake of less than 1,000kcal/day; methylation level: 40.98%; 95% CI: 33.86-48.11) compared with that in the middle (1,000-1,999kcal/day; methylation level: 51.28%; 95% CI: 48.28-54.27) and high (≥2,000kcal/day; methylation level: 52.16%; 95% CI: 44.81-59.51) calorie groups (p=0.0054 and 0.047, respectively). In the subpopulations with low to moderate calorie intake (<2,000kcal/day), reduced H19-DMR methylation in UC tissues was significantly related to serum homocysteine concentration (OR =0.520; 95% CI: 0.285-0.875; p=0.019), maternal age (OR =1.22; 95% CI: 1.01-1.52; p=0.049), and serum folate levels (OR =0.917; 95% CI: 0.838-0.990; p=0.040). These data indicated that H19-DMR methylation levels in human UC tissues could be modulated by maternal factors during early pregnancy and may affect fetal and newborn growth.
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Affiliation(s)
- Hidenobu Miyaso
- Center for Preventive Medical Sciences, Chiba University, Chiba, Japan; Department of Bioenvironmental Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan; Department of Anatomy, Tokyo Medical University, Tokyo, Japan
| | - Kenichi Sakurai
- Center for Preventive Medical Sciences, Chiba University, Chiba, Japan
| | - Shunya Takase
- Department of Bioenvironmental Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Akifumi Eguchi
- Center for Preventive Medical Sciences, Chiba University, Chiba, Japan
| | - Masahiro Watanabe
- Center for Preventive Medical Sciences, Chiba University, Chiba, Japan
| | - Hideoki Fukuoka
- Comprehensive Research Organization, Waseda University, Tokyo, Japan
| | - Chisato Mori
- Center for Preventive Medical Sciences, Chiba University, Chiba, Japan; Department of Bioenvironmental Medicine, Graduate School of Medicine, Chiba University, Chiba, Japan; Department of Anatomy, Tokyo Medical University, Tokyo, Japan.
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Pauwels S, Truijen I, Ghosh M, Duca RC, Langie SAS, Bekaert B, Freson K, Huybrechts I, Koppen G, Devlieger R, Godderis L. The effect of paternal methyl-group donor intake on offspring DNA methylation and birth weight. J Dev Orig Health Dis 2017; 8:311-321. [PMID: 28260562 DOI: 10.1017/s2040174417000046] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Most nutritional studies on the development of children focus on mother-infant interactions. Maternal nutrition is critically involved in the growth and development of the fetus, but what about the father? The aim is to investigate the effects of paternal methyl-group donor intake (methionine, folate, betaine, choline) on paternal and offspring global DNA (hydroxy)methylation, offspring IGF2 DMR DNA methylation, and birth weight. Questionnaires, 7-day estimated dietary records, whole blood samples, and anthropometric measurements from 74 fathers were obtained. A total of 51 cord blood samples were collected and birth weight was obtained. DNA methylation status was measured using liquid chromatography-tandem mass spectrometry (global DNA (hydroxy)methylation) and pyrosequencing (IGF2 DMR methylation). Paternal betaine intake was positively associated with paternal global DNA hydroxymethylation (0.028% per 100 mg betaine increase, 95% CI: 0.003, 0.053, P=0.03) and cord blood global DNA methylation (0.679% per 100 mg betaine increase, 95% CI: 0.057, 1.302, P=0.03). Paternal methionine intake was positively associated with CpG1 (0.336% per 100 mg methionine increase, 95% CI: 0.103, 0.569, P=0.006), and mean CpG (0.201% per 100 mg methionine increase, 95% CI: 0.001, 0.402, P=0.049) methylation of the IGF2 DMR in cord blood. Further, a negative association between birth weight/birth weight-for-gestational age z-score and paternal betaine/methionine intake was found. In addition, a positive association between choline and birth weight/birth weight-for-gestational age z-score was also observed. Our data indicate a potential impact of paternal methyl-group donor intake on paternal global DNA hydroxymethylation, offspring global and IGF2 DMR DNA methylation, and prenatal growth.
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Affiliation(s)
- S Pauwels
- 1Department of Public Health and Primary Care, Environment and Health,KU Leuven- University of Leuven,Leuven,Belgium
| | - I Truijen
- 1Department of Public Health and Primary Care, Environment and Health,KU Leuven- University of Leuven,Leuven,Belgium
| | - M Ghosh
- 1Department of Public Health and Primary Care, Environment and Health,KU Leuven- University of Leuven,Leuven,Belgium
| | - R C Duca
- 1Department of Public Health and Primary Care, Environment and Health,KU Leuven- University of Leuven,Leuven,Belgium
| | - S A S Langie
- 2Unit Environmental Risk and Health,Flemish Institute of Technological Research (VITO),Mol,Belgium
| | - B Bekaert
- 4Department of Imaging & Pathology,KU Leuven - University of Leuven,Leuven,Belgium
| | - K Freson
- 6Center for Molecular and Vascular Biology,KU Leuven - University of Leuven,Leuven,Belgium
| | - I Huybrechts
- 7Dietary Exposure Assessment Group,International Agency for Research on Cancer,Lyon,France
| | - G Koppen
- 2Unit Environmental Risk and Health,Flemish Institute of Technological Research (VITO),Mol,Belgium
| | - R Devlieger
- 8Department of Development and Regeneration,KU Leuven-University of Leuven,Leuven,Belgium
| | - L Godderis
- 1Department of Public Health and Primary Care, Environment and Health,KU Leuven- University of Leuven,Leuven,Belgium
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Yamasato K, Tsai PJS, Davis J, Yamamoto SY, Bryant-Greenwood GD. Human relaxins (RLNH1, RLNH2), their receptor (RXFP1) and fetoplacental growth. Reproduction 2017; 154:67-77. [PMID: 28468839 DOI: 10.1530/rep-17-0039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 04/04/2017] [Accepted: 05/02/2017] [Indexed: 12/19/2022]
Abstract
Relaxin, a systemic and placental hormone, has potential roles in fetoplacental growth. Human placenta expresses two RLN genes, RLNH1 and RLNH2 Maternal obesity is common and is associated with abnormal fetal growth. Our aims were to relate systemic and cord blood RLNH2, placental RLNs and their receptor (RXFP1) with fetoplacental growth in context of maternal body mass index, and associations with insulin-like growth factor 2 (IGF2) and vascular endothelial growth factor A (VEGFA) in the same placentas. Systemic, cord blood and placental samples were collected prior to term labor, divided by prepregnancy body mass index: underweight/normal (N = 25) and overweight/obese (N = 44). Blood RLNH2 was measured by ELISA; placental RLNH2, RLNH1, RXFP1, IGF2 and VEGFA were measured by quantitative immunohistochemistry and mRNAs were measured by quantitative reverse transcription PCR. Birthweight increased with systemic RLNH2 only in underweight/normal women (P = 0.036). Syncytiotrophoblast RLNH2 was increased in overweight/obese patients (P = 0.017) and was associated with placental weight in all subjects (P = 0.038). RLNH1 had no associations with birthweight or placental weight, but was associated with increased trophoblast and endothelial IGF2 and VEGFA, due to female fetal sex. Thus, while systemic RLNH2 may be involved in birthweight regulation in underweight/normal women, placental RLNH2 in all subjects may be involved in placental weight. A strong association of trophoblast IGF2 with birthweight and placental weight in overweight/obese women suggests its importance. However, an association of only RLNH1 with placental IGF2 and VEGFA was dependent upon female fetal sex. These results suggest that both systemic and placental RLNs may be associated with fetoplacental growth.
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Affiliation(s)
- Kelly Yamasato
- Department of ObstetricsGynecology and Women's Health, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii, USA
| | - Pai-Jong Stacy Tsai
- Department of Obstetrics and GynecologyJacobs School of Medicine and Biomedical Sciences, University of Buffalo, Buffalo, New York, USA
| | - James Davis
- Office of BiostatisticsJohn A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii, USA
| | - Sandra Y Yamamoto
- Department of ObstetricsGynecology and Women's Health, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii, USA
| | - Gillian D Bryant-Greenwood
- Department of ObstetricsGynecology and Women's Health, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii, USA
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Lin YJ, Tsai CC, Huang LT, Sheen JM, Tiao MM, Yu HR, Chen CC, Tain YL. Detrimental effect of maternal and post-weaning high-fat diet on the reproductive function in the adult female offspring rat: roles of insulin-like growth factor 2 and the ovarian circadian clock. J Assist Reprod Genet 2017; 34:817-826. [PMID: 28417351 PMCID: PMC5445052 DOI: 10.1007/s10815-017-0915-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 03/29/2017] [Indexed: 11/24/2022] Open
Abstract
PURPOSE We evaluate the impact of maternal and post-weaning high-fat (HF) diet on ovarian follicular population, steroidogenesis, and gene expression with a focus on the circadian clock system and insulin-like growth factor 2 (Igf2) in adult offspring ovaries, and to elucidate whether a maternal and post-weaning diet confers similar risks. METHODS Virgin Sprague-Dawley rats were fed with normal chow (C) diet or HF diet for 5 weeks before mating, during gestation, and lactation. Female offspring were fed with the C or HF diet from weaning to 6 months of age, resulting in four study groups (n = 6 per group): C/C, C/HF, HF/C, and HF/HF. RESULTS Ovaries from offspring exposed to post-weaning HF diet (i.e., the C/HF and HF/HF groups) had a decrease in small follicle numbers, but with similar numbers of antral follicles and corpora lutea. Offspring from HF-fed dams (i.e., the HF/C and HF/HF groups) had increased plasma estradiol concentrations and decreased luteinizing hormone levels at 6 months of age. In addition, Igf2 and each of the circadian rhythm core genes Clock, Per1, Per2, and Per3 were increased in the ovaries of offspring exposed to maternal HF diet (both HF/C and HF/HF groups). CONCLUSIONS Maternal and post-weaning HF diet programs the reproductive profile of the female offspring in adult life through different manners. Post-weaning HF intake resulted in the reduction of small follicles in adulthood, whereas maternal HF diet had long-term deleterious consequences on female offspring steroidogenesis and coincided with alteration of the upregulation of the imprinted gene Igf2 and changes in ovarian circadian rhythms.
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Affiliation(s)
- Yu-Ju Lin
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University, College of Medicine, Kaohsiung, Taiwan
| | - Ching-Chou Tsai
- Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University, College of Medicine, Kaohsiung, Taiwan
| | - Li-Tung Huang
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University, College of Medicine, 123 Dabi Road, Niausung, Kaohsiung, 833, Taiwan
| | - Jiunn-Ming Sheen
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University, College of Medicine, 123 Dabi Road, Niausung, Kaohsiung, 833, Taiwan
| | - Mao-Meng Tiao
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University, College of Medicine, 123 Dabi Road, Niausung, Kaohsiung, 833, Taiwan
| | - Hong-Ren Yu
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University, College of Medicine, 123 Dabi Road, Niausung, Kaohsiung, 833, Taiwan
| | - Chih-Cheng Chen
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University, College of Medicine, 123 Dabi Road, Niausung, Kaohsiung, 833, Taiwan
| | - You-Lin Tain
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University, College of Medicine, 123 Dabi Road, Niausung, Kaohsiung, 833, Taiwan. .,Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University, College of Medicine, Kaohsiung, Taiwan.
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Godfrey KM, Reynolds RM, Prescott SL, Nyirenda M, Jaddoe VWV, Eriksson JG, Broekman BFP. Influence of maternal obesity on the long-term health of offspring. Lancet Diabetes Endocrinol 2017; 5:53-64. [PMID: 27743978 PMCID: PMC5245733 DOI: 10.1016/s2213-8587(16)30107-3] [Citation(s) in RCA: 594] [Impact Index Per Article: 84.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 05/07/2016] [Accepted: 05/25/2016] [Indexed: 01/01/2023]
Abstract
In addition to immediate implications for pregnancy complications, increasing evidence implicates maternal obesity as a major determinant of offspring health during childhood and later adult life. Observational studies provide evidence for effects of maternal obesity on her offspring's risks of obesity, coronary heart disease, stroke, type 2 diabetes, and asthma. Maternal obesity could also lead to poorer cognitive performance and increased risk of neurodevelopmental disorders, including cerebral palsy. Preliminary evidence suggests potential implications for immune and infectious-disease-related outcomes. Insights from experimental studies support causal effects of maternal obesity on offspring outcomes, which are mediated at least partly through changes in epigenetic processes, such as alterations in DNA methylation, and perhaps through alterations in the gut microbiome. Although the offspring of obese women who lose weight before pregnancy have a reduced risk of obesity, few controlled intervention studies have been done in which maternal obesity is reversed and the consequences for offspring have been examined. Because the long-term effects of maternal obesity could have profound public health implications, there is an urgent need for studies on causality, underlying mechanisms, and effective interventions to reverse the epidemic of obesity in women of childbearing age and to mitigate consequences for offspring.
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Affiliation(s)
- Keith M Godfrey
- MRC Lifecourse Epidemiology Unit and NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK.
| | - Rebecca M Reynolds
- Endocrinology Unit, University/BHF Centre for Cardiovascular Science, University of Edinburgh, Queen's Medical Research Institute, Edinburgh, Scotland, UK
| | - Susan L Prescott
- School of Paediatrics and Child Health, and Telethon Kids Institute, University of Western Australia, Perth, WA, Australia
| | - Moffat Nyirenda
- London School of Hygiene & Tropical Medicine, London, UK; College of Medicine, University of Malawi, Blantyre, Malawi
| | - Vincent W V Jaddoe
- Departments of Epidemiology and Pediatrics, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Johan G Eriksson
- Department of General Practice and Primary Health Care, University of Helsinki and Helsinki University Hospital, Helsinki, Finland; Folkhälsan Research Center, Helsinki, Finland
| | - Birit F P Broekman
- Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore; Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore; National University Health System, Singapore, Singaporre
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Agha G, Hajj H, Rifas-Shiman SL, Just AC, Hivert MF, Burris HH, Lin X, Litonjua AA, Oken E, DeMeo DL, Gillman MW, Baccarelli AA. Birth weight-for-gestational age is associated with DNA methylation at birth and in childhood. Clin Epigenetics 2016; 8:118. [PMID: 27891191 PMCID: PMC5112715 DOI: 10.1186/s13148-016-0285-3] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 11/02/2016] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Both higher and lower fetal growth are associated with cardio-metabolic health later in life, suggesting that prenatal developmental programming determines long-term cardiovascular disease risk. Epigenetic mechanisms, which orchestrate fetal growth and development, may offer insight on the early programming of health and disease. We investigated whether birth weight-for-gestational is associated with DNA methylation at birth and mid-childhood, measured via the Infinium 450K array. METHODS/RESULTS Participants were from Project Viva, a pre-birth cohort of pregnant women and their children in Eastern Massachusetts. After exclusion of participants with maternal type 1 or 2 diabetes and gestational age <34 weeks, we used DNA methylation assays from 476 venous umbilical cord blood samples and a subset of 235 who additionally had peripheral blood samples available in mid-childhood (age 7-10 years). Among 392,918 CpG sites analyzed, birth weight-for-gestational age z-score was associated with cord blood DNA methylation at 34 CpGs (false discovery rate P < 0.05), after adjusting for maternal age, race/ethnicity, education, smoking, parity, delivery mode, pre-pregnancy BMI, gestational diabetes status, child sex, and estimated cord blood cell proportions based on a cord blood reference panel. Two of these CpGs were previously reported in epigenome-wide analyses of birth weight, and several other CpGs map to genes relevant to fetal growth and development. Namely, higher birth weight-for-gestational age was associated with higher methylation at four CpGs at the PBX1 locus (e.g., β (95% CI) for lead signal at cg06750897 = 1.9 (1.2, 2.6)), which encodes a transcription factor that regulates embryonic development. Birth weight-for-gestational age was also associated with mid-childhood blood DNA methylation at four of the 34 CpGs identified in cord blood analyses, including sites at the PBX1 locus described. CONCLUSIONS We identified CpG sites where birth weight-for-gestational age was associated with DNA methylation at birth, and for a subset of these sites, birth weight-for-gestational age was also associated with DNA methylation at mid-childhood.
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Affiliation(s)
- Golareh Agha
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, 722 West 168th Street, New York, NY 10032 USA
| | - Hanine Hajj
- Division of Newborn Medicine, Boston Children’s Hospital, Boston, MA USA
| | - Sheryl L. Rifas-Shiman
- Obesity Prevention Program, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA USA
| | - Allan C. Just
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY USA
| | - Marie-France Hivert
- Obesity Prevention Program, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA USA
- Diabetes Unit, Massachusetts General Hospital, Boston, MA USA
| | - Heather H. Burris
- Department of Neonatology, Beth Israel Deaconess Medical Center, Department of Pediatrics, Harvard Medical School, Boston, MA USA
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA USA
| | - Xihong Lin
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA USA
| | | | - Emily Oken
- Obesity Prevention Program, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA USA
| | - Dawn L. DeMeo
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA USA
| | - Matthew W. Gillman
- Obesity Prevention Program, Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA USA
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA USA
| | - Andrea A. Baccarelli
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, 722 West 168th Street, New York, NY 10032 USA
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Rounge TB, Page CM, Lepistö M, Ellonen P, Andreassen BK, Weiderpass E. Genome-wide DNA methylation in saliva and body size of adolescent girls. Epigenomics 2016; 8:1495-1505. [DOI: 10.2217/epi-2016-0045] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Aim: We performed an epigenome-wide association study within the Finnish Health in Teens cohort to identify differential DNA methylation and its association with BMI in adolescents. Materials & methods: Differential DNA methylation analyses of 3.1 million CpG sites were performed in saliva samples from 50 lean and 50 heavy adolescent girls by genome-wide targeted bisulfite-sequencing. Results: We identified 100 CpG sites with p-values < 0.000524, seven regions by ‘bumphunting’ and five CpG islands that differed significantly between the two groups. The ten CpG sites and regions most strongly associated with BMI substantially overlapped with obesity- and insulin-related genes, including MC2R, IGFBPL1, IP6K1 and IGF2BP1. Conclusion: Our findings suggest an association between the saliva methylome and BMI in adolescence.
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Affiliation(s)
- Trine B Rounge
- Genetic Epidemiology Group, Folkhälsan Research Center, Helsinki, Finland
- Department of Research, Cancer Registry of Norway, Institute of Population-Based Cancer Research, Oslo, Norway
| | - Christian M Page
- Department of Neurology, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Noncommunicable Diseases, Norwegian Institute of Public Health, Oslo, Norway
| | - Maija Lepistö
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland
| | - Pekka Ellonen
- Institute for Molecular Medicine Finland (FIMM), University of Helsinki, Helsinki, Finland
| | - Bettina K Andreassen
- Department of Research, Cancer Registry of Norway, Institute of Population-Based Cancer Research, Oslo, Norway
| | - Elisabete Weiderpass
- Genetic Epidemiology Group, Folkhälsan Research Center, Helsinki, Finland
- Department of Research, Cancer Registry of Norway, Institute of Population-Based Cancer Research, Oslo, Norway
- Department of Medical Epidemiology & Biostatistics, Karolinska Institutet, Stockholm, Sweden
- Department of Community Medicine, Faculty of Health Sciences, University of Tromsø, The Arctic University of Norway, Tromsø, Norway
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Li Y, Xie C, Murphy SK, Skaar D, Nye M, Vidal AC, Cecil KM, Dietrich KN, Puga A, Jirtle RL, Hoyo C. Lead Exposure during Early Human Development and DNA Methylation of Imprinted Gene Regulatory Elements in Adulthood. ENVIRONMENTAL HEALTH PERSPECTIVES 2016; 124:666-73. [PMID: 26115033 PMCID: PMC4858407 DOI: 10.1289/ehp.1408577] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Accepted: 06/24/2015] [Indexed: 05/03/2023]
Abstract
BACKGROUND Lead exposure during early development causes neurodevelopmental disorders by unknown mechanisms. Epidemiologic studies have focused recently on determining associations between lead exposure and global DNA methylation; however, such approaches preclude the identification of loci that may alter human disease risk. OBJECTIVES The objective of this study was to determine whether maternal, postnatal, and early childhood lead exposure can alter the differentially methylated regions (DMRs) that control the monoallelic expression of imprinted genes involved in metabolism, growth, and development. METHODS Questionnaire data and serial blood lead levels were obtained from 105 participants (64 females, 41 males) of the Cincinnati Lead Study from birth to 78 months. When participants were adults, we used Sequenom EpiTYPER assays to test peripheral blood DNA to quantify CpG methylation in peripheral blood leukocytes at DMRs of 22 human imprinted genes. Statistical analyses were conducted using linear regression. RESULTS Mean blood lead concentration from birth to 78 months was associated with a significant decrease in PEG3 DMR methylation (β = -0.0014; 95% CI: -0.0023, -0.0005, p = 0.002), stronger in males (β = -0.0024; 95% CI: -0.0038, -0.0009, p = 0.003) than in females (β = -0.0009; 95% CI: -0.0020, 0.0003, p = 0.1). Elevated mean childhood blood lead concentration was also associated with a significant decrease in IGF2/H19 (β = -0.0013; 95% CI: -0.0023, -0.0003, p = 0.01) DMR methylation, but primarily in females, (β = -0.0017; 95% CI: -0.0029, -0.0006, p = 0.005) rather than in males, (β = -0.0004; 95% CI: -0.0023, 0.0015, p = 0.7). Elevated blood lead concentration during the neonatal period was associated with higher PLAGL1/HYMAI DMR methylation regardless of sex (β = 0.0075; 95% CI: 0.0018, 0.0132, p = 0.01). The magnitude of associations between cumulative lead exposure and CpG methylation remained unaltered from 30 to 78 months. CONCLUSIONS Our findings provide evidence that early childhood lead exposure results in sex-dependent and gene-specific DNA methylation differences in the DMRs of PEG3, IGF2/H19, and PLAGL1/HYMAI in adulthood. CITATION Li Y, Xie C, Murphy SK, Skaar D, Nye M, Vidal AC, Cecil KM, Dietrich KN, Puga A, Jirtle RL, Hoyo C. 2016. Lead exposure during early human development and DNA methylation of imprinted gene regulatory elements in adulthood. Environ Health Perspect 124:666-673; http://dx.doi.org/10.1289/ehp.1408577.
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Affiliation(s)
- Yue Li
- Department of Community and Family Medicine, and
- Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, North Carolina, USA
| | - Changchun Xie
- Division of Epidemiology and Biostatistics, Department of Environmental Health, Center for Clinical and Translational Science and Training, University of Cincinnati (UC), Cincinnati, Ohio, USA
| | - Susan K. Murphy
- Department of Community and Family Medicine, and
- Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, North Carolina, USA
| | - David Skaar
- Department of Biological Sciences, Center for Human Health and the Environment, North Carolina State University (NCSU), Raleigh, North Carolina, USA
| | - Monica Nye
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Adriana C. Vidal
- Department of Community and Family Medicine, and
- Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, North Carolina, USA
| | - Kim M. Cecil
- Cincinnati Children’s Environmental Health Center, Cincinnati Children’s Hospital Medical Center, UC College of Medicine, Cincinnati, Ohio, USA
- Department of Radiology,
- Department of Pediatrics,
- Department of Environmental Health,
- Center for Environmental Genetics, and
| | - Kim N. Dietrich
- Division of Epidemiology and Biostatistics, UC College of Medicine, Cincinnati, Ohio, USA
| | - Alvaro Puga
- Department of Environmental Health,
- Center for Environmental Genetics, and
| | - Randy L. Jirtle
- Department of Biological Sciences, Center for Human Health and the Environment, North Carolina State University (NCSU), Raleigh, North Carolina, USA
- Department of Oncology, McArdle Laboratory for Cancer Research, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Department of Sport and Exercise Sciences, Institute of Sport and Physical Activity Research, University of Bedfordshire, Bedford, Bedfordshire, United Kingdom
- Address correspondence to C. Hoyo, Department of Biological Sciences, Center for Human Health and the Environment (CHHE), Program of Epidemiology and Environmental Epigenomics, North Carolina State University (NCSU), Raleigh, NC 27695-7633 USA. Telephone: (919) 515-0540. E-mail: , or R.L. Jirtle, Department of Biological Sciences, CHHE, NCSU, Raleigh, NC 27695-7633 USA. Telephone: (919) 399-3342. E-mail:
| | - Cathrine Hoyo
- Department of Community and Family Medicine, and
- Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, North Carolina, USA
- Department of Biological Sciences, Center for Human Health and the Environment, North Carolina State University (NCSU), Raleigh, North Carolina, USA
- Address correspondence to C. Hoyo, Department of Biological Sciences, Center for Human Health and the Environment (CHHE), Program of Epidemiology and Environmental Epigenomics, North Carolina State University (NCSU), Raleigh, NC 27695-7633 USA. Telephone: (919) 515-0540. E-mail: , or R.L. Jirtle, Department of Biological Sciences, CHHE, NCSU, Raleigh, NC 27695-7633 USA. Telephone: (919) 399-3342. E-mail:
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Unternaehrer E, Bolten M, Nast I, Staehli S, Meyer AH, Dempster E, Hellhammer DH, Lieb R, Meinlschmidt G. Maternal adversities during pregnancy and cord blood oxytocin receptor (OXTR) DNA methylation. Soc Cogn Affect Neurosci 2016; 11:1460-70. [PMID: 27107296 DOI: 10.1093/scan/nsw051] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Accepted: 04/10/2016] [Indexed: 12/20/2022] Open
Abstract
The aim of this study was to investigate whether maternal adversities and cortisol levels during pregnancy predict cord blood DNA methylation of the oxytocin receptor (OXTR). We collected cord blood of 39 babies born to mothers participating in a cross-sectional study (N = 100) conducted in Basel, Switzerland (2007-10). Mothers completed the Inventory of Life Events (second trimester: T2), the Edinburgh Postnatal Depression Scale (EPDS, third trimester: T3), the Trier Inventory of Chronic Stress (TICS-K, 1-3 weeks postpartum) and provided saliva samples (T2, T3) for maternal cortisol profiles, as computed by the area under the curve with respect to ground (AUCg) or increase (AUCi) for the cortisol awakening response (CAR) and for diurnal cortisol profiles (DAY). OXTR DNA methylation was quantified using Sequenom EpiTYPER. The number of stressful life events (P = 0.032), EPDS score (P = 0.007) and cortisol AUCgs at T2 (CAR: P = 0.020; DAY: P = 0.024) were negatively associated with OXTR DNA methylation. Our findings suggest that distinct prenatal adversities predict decreased DNA methylation in a gene that is relevant for childbirth, maternal behavior and wellbeing of mother and offspring. If a reduced OXTR methylation increases OXTR expression, our findings could suggest an epigenetic adaptation to an adverse early environment.
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Affiliation(s)
- Eva Unternaehrer
- University of Basel, Department of Psychology, Division of Clinical Psychology and Epidemiology, 4055 Basel, Switzerland University of Basel, National Centre of Competence in Research (NCCR) Swiss Etiological Study of Adjustment and Mental Health (sesam), 4055 Basel, Switzerland Douglas Mental Health University Institute, McGill University, 6875 La Salle Boulevard, Montreal, QC H4H 1R3, Canada
| | - Margarete Bolten
- University of Basel, Child and Adolescent Psychiatric Hospital, 4058 Basel, Switzerland Ludwig-Maximilians-University Munich, Department of Psychology, 80802 Munich, Germany
| | - Irina Nast
- University of Basel, National Centre of Competence in Research (NCCR) Swiss Etiological Study of Adjustment and Mental Health (sesam), 4055 Basel, Switzerland Zurich University of Applied Sciences, School of Health Professions, 8401 Winterthur, Switzerland
| | - Simon Staehli
- University of Trier, Institute of Psychobiology, 54296 Trier, Germany
| | - Andrea H Meyer
- University of Basel, Department of Psychology, Division of Clinical Psychology and Epidemiology, 4055 Basel, Switzerland
| | - Emma Dempster
- University of Exeter Medical School, Exeter EX1 2LU, UK
| | | | - Roselind Lieb
- University of Basel, Department of Psychology, Division of Clinical Psychology and Epidemiology, 4055 Basel, Switzerland University of Basel, National Centre of Competence in Research (NCCR) Swiss Etiological Study of Adjustment and Mental Health (sesam), 4055 Basel, Switzerland
| | - Gunther Meinlschmidt
- University of Basel, Department of Psychology, Division of Clinical Psychology and Epidemiology, 4055 Basel, Switzerland University of Basel, National Centre of Competence in Research (NCCR) Swiss Etiological Study of Adjustment and Mental Health (sesam), 4055 Basel, Switzerland Ruhr-University Bochum, Faculty of Medicine, Universitaetsstrasse 150, 44801 Bochum, Germany
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Zhou G, Li Q, Huang L, Wu Y, Wu M, Wang WC. Quality Analysis of DNA from Cord Blood Buffy Coat: The Best Neonatal DNA Source for Epidemiological Studies? Biopreserv Biobank 2016; 14:165-71. [PMID: 26885947 DOI: 10.1089/bio.2015.0075] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- Guangdi Zhou
- MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qin Li
- Department of Obstetrics and Gynecology, Changhai Hospital Affiliated to the Second Military Medical University, Shanghai, China
| | - Lisu Huang
- Department of Pediatrics, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuhang Wu
- MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Meiqin Wu
- MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Weiye C. Wang
- MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Su R, Wang C, Feng H, Lin L, Liu X, Wei Y, Yang H. Alteration in Expression and Methylation of IGF2/H19 in Placenta and Umbilical Cord Blood Are Associated with Macrosomia Exposed to Intrauterine Hyperglycemia. PLoS One 2016; 11:e0148399. [PMID: 26840070 PMCID: PMC4739655 DOI: 10.1371/journal.pone.0148399] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Accepted: 01/18/2016] [Indexed: 12/16/2022] Open
Abstract
Objective Macrosomia is one of the most common complications in gestational diabetes mellitus. Insulin-like growth factor 2 and H19 are two of the imprinted candidate genes that are involved in fetal growth and development. Change in methylation at differentially methylated region of the insulin-like growth factor 2 and H19 has been proved to be an early event related to the programming of metabolic profile, including macrosomia and small for gestational age in offspring. Here we hypothesize that alteration in methylation at differentially methylated region of the insulin-like growth factor 2 and H19 is associated with macrosomia induced by intrauterine hyperglycemia. Results The expression of insulin-like growth factor 2 is significant higher in gestational diabetes mellitus group (GDM group) compared to normal glucose tolerance group (NGT group) both in umbilical cord blood and placenta, while the expression of H19 is significant lower in GDM group in umbilical cord blood. The expression of insulin-like growth factor 2 is significant higher in normal glucose tolerance with macrosomia group (NGT-M) compared to normal glucose tolerance with normal birthweight group (NGT-NBW group) both in placenta and umbilical cord blood. A model with interaction term of gene expression of IGF2 and H19 found that IGF2 and the joint action of IGF2 and H19 in placenta showed significantly relationship with GDM/NGT and GDM-NBW/NGT-NBW. A borderline significant association was seen among IGF2 and H19 in cord blood and GDM-M/NGT-M. The methylation level at different CpG sites of insulin-like growth factor 2 and H19 in umbilical cord blood was also significantly different among groups. Based on the multivariable linear regression analysis, the methylation of the insulin-like growth factor 2 / H19 is closely related to birth weight and intrauterine hyperglycemia. Conclusions We confirmed the existence of alteration in DNA methylation in umbilical cord blood exposed to intrauterine hyperglycemia and reported a functional role in regulating gene associated with insulin-like growth factor 2/H19. Both of these might be the underlying pathogenesis of macrosomia. We also provided the evidence of strong associations between methylation of insulin-like growth factor 2/H19 and macrosomia induced by intrauterine hyperglycemia.
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Affiliation(s)
- Rina Su
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China
| | - Chen Wang
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China
| | - Hui Feng
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China
| | - Li Lin
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China
| | - Xinyue Liu
- Pharmaceutical Outcomes and Policy, College of Pharmacy, University of Florida, Florida, United States of America
| | - Yumei Wei
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China
- * E-mail: (HXY); (YMW)
| | - Huixia Yang
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China
- * E-mail: (HXY); (YMW)
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DNA Methylation Changes in the IGF1R Gene in Birth Weight Discordant Adult Monozygotic Twins. Twin Res Hum Genet 2015; 18:635-46. [DOI: 10.1017/thg.2015.76] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Low birth weight (LBW) can have an impact on health outcomes in later life, especially in relation to pre-disposition to metabolic disease. Several studies suggest that LBW resulting from restricted intrauterine growth leaves a footprint on DNA methylation in utero, and this influence likely persists into adulthood. To investigate this further, we performed epigenome-wide association analyses of blood DNA methylation using Infinium HumanMethylation450 BeadChip profiles in 71 adult monozygotic (MZ) twin pairs who were extremely discordant for birth weight. A signal mapping to the IGF1R gene (cg12562232, p = 2.62 × 10−8), was significantly associated with birth weight discordance at a genome-wide false-discovery rate (FDR) of 0.05. We pursued replication in three additional independent datasets of birth weight discordant MZ pairs and observed the same direction of association, but the results were not significant. However, a meta-analysis across the four independent samples, in total 216 birth-weight discordant MZ twin pairs, showed a significant positive association between birth weight and DNA methylation differences at IGF1R (random-effects meta-analysis p = .04), and the effect was particularly pronounced in older twins (random-effects meta-analysis p = .008, 98 older birth-weight discordant MZ twin pairs). The results suggest that severe intra-uterine growth differences (birth weight discordance >20%) are associated with methylation changes in the IGF1R gene in adulthood, independent of genetic effects.
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Murphy SK, Erginer E, Huang Z, Visco Z, Hoyo C. Genotype-Epigenotype Interaction at the IGF2 DMR. Genes (Basel) 2015; 6:777-89. [PMID: 26343731 PMCID: PMC4584329 DOI: 10.3390/genes6030777] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 08/18/2015] [Accepted: 08/21/2015] [Indexed: 11/16/2022] Open
Abstract
Paternally expressed Insulin-like Growth Factor II (IGF2) encodes a gene whose protein product functions as a potent growth mitogen. Overexpression of IGF2 has been implicated in a wide number of disorders and diseases. IGF2 is regulated in part by differential methylation of the two parentally derived alleles. The differentially methylated region (DMR) located upstream of the imprinted promoters of IGF2 exhibits plasticity under environmental stress and is hypomethylated in several types of cancer. Through bisulfite pyrosequencing and confirmation by nucleotide sequencing, we discovered a CpG to CpC transversion that results in hypomethylation of one of the three CpGs comprising this DMR. The presence of the polymorphism introduces a genetic rather than an environmentally-driven epigenetic source of hypomethylation that is additive to non-genetic sources.
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Affiliation(s)
- Susan K Murphy
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Duke University Medical Center, Box 91012, B223 LSRC Building, Durham, NC 27708, USA.
| | - Erin Erginer
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Duke University Medical Center, Box 91012, B223 LSRC Building, Durham, NC 27708, USA.
| | - Zhiqing Huang
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Duke University Medical Center, Box 91012, B223 LSRC Building, Durham, NC 27708, USA.
| | - Zachary Visco
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Duke University Medical Center, Box 91012, B223 LSRC Building, Durham, NC 27708, USA.
| | - Cathrine Hoyo
- Department of Biological Sciences, North Carolina State University, Raleigh, NC 27695, USA.
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Kawashima A, Koide K, Hasegawa J, Arakaki T, Takenaka S, Maruyama D, Matsuoka R, Sekizawa A. Maternal Smoking History Enhances the Expression of Placental Growth Factor in Invasive Trophoblasts at Early Gestation Despite Cessation of Smoking. PLoS One 2015; 10:e0134181. [PMID: 26214510 PMCID: PMC4516258 DOI: 10.1371/journal.pone.0134181] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 07/06/2015] [Indexed: 01/12/2023] Open
Abstract
Maternal smoking during early pregnancy is associated with a reduced risk for preeclampsia even after smoking cessation during pregnancy. Although the pathophysiology of preeclampsia has not been established, placental growth factor (PlGF) is believed to be a key factor. The aim of this study was to assess the effect of maternal smoking on the PlGF expression in invasive trophoblasts at early gestation. We collected villous tissues from women requesting surgical termination due to non-medical reasons at 7-8 weeks of gestation. The maternal smoking status was evaluated by measuring the serum cotinine level and patients were divided into two groups: active smokers and non-smokers. After separating invasive trophoblasts from villous tissues cultured initially under 2% O2 for 24 hours, the separated invasive trophoblasts were cultured under 2% or 8% O2 for 48 hours. The expression levels of the PlGF gene in villous tissue specimens and in invasive trophoblasts cultured after the conditions were quantified using qRT-PCR. The levels of PlGF protein in the medium were quantified using an ELISA. The gene expression level of PlGF in the villi in the active-smokers was significantly higher than that of the non-smokers. In comparison of the invasive trophoblasts under normoxia and oxygenated conditions, the ratio of PlGF gene expression and protein expression under oxygenation (2% O2+8% O2 / 2% O2+2% O2) in the active-smokers were both significantly higher than in the non-smokers. Maternal smoking history appears to stimulate PlGF expression in invasive trophoblasts under oxygenated conditions. This may be one of several causes leading to the protective effect of maternal smoking on preeclampsia.
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Affiliation(s)
- Akihiro Kawashima
- Department of Obstetrics and Gynecology, Showa University School of Medicine, Shinagawa, Japan
- * E-mail:
| | - Keiko Koide
- Department of Obstetrics and Gynecology, Showa University School of Medicine, Shinagawa, Japan
| | - Junichi Hasegawa
- Department of Obstetrics and Gynecology, Showa University School of Medicine, Shinagawa, Japan
| | - Tatsuya Arakaki
- Department of Obstetrics and Gynecology, Showa University School of Medicine, Shinagawa, Japan
| | - Shin Takenaka
- Department of Obstetrics and Gynecology, Showa University School of Medicine, Shinagawa, Japan
| | - Daisuke Maruyama
- Department of Obstetrics and Gynecology, Showa University School of Medicine, Shinagawa, Japan
| | - Ryu Matsuoka
- Department of Obstetrics and Gynecology, Showa University School of Medicine, Shinagawa, Japan
| | - Akihiko Sekizawa
- Department of Obstetrics and Gynecology, Showa University School of Medicine, Shinagawa, Japan
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Kappil MA, Green BB, Armstrong DA, Sharp AJ, Lambertini L, Marsit CJ, Chen J. Placental expression profile of imprinted genes impacts birth weight. Epigenetics 2015; 10:842-9. [PMID: 26186239 DOI: 10.1080/15592294.2015.1073881] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
The importance of imprinted genes in regulating feto-placental development has been long established. However, a comprehensive assessment of the role of placental imprinted gene expression on fetal growth has yet to be conducted. In this study, we examined the association between the placental expression of 108 established and putative imprinted genes and birth weight in 677 term pregnancies, oversampled for small for gestational age (SGA) and large for gestational age (LGA) infants. Using adjusted multinomial regression analyses, a 2-fold increase in the expression of 9 imprinted genes was positively associated with LGA status: BLCAP [odds ratio (OR) = 3.78, 95% confidence interval (CI): 1.83, 7.82], DLK1 [OR = 1.63, 95% CI: 1.27, 2.09], H19 [OR = 2.79, 95% CI: 1.77, 4.42], IGF2 [OR = 1.43, 95% CI:1.31, 2.40], MEG3 [OR = 1.42, 95% CI: 1.19, 1.71], MEST [OR = 4.78, 95% CI: 2.64, 8.65], NNAT [OR = 1.40, 95% CI: 1.05, 1.86], NDN [OR = 2.52, 95% CI: 1.72, 3.68], and PLAGL1 [OR = 1.85, 95% CI: 1.40, 2.44]. For SGA status, a 2-fold increase in MEST expression was associated with decreased risk [OR = 0.31, 95% CI: 0.17, 0.58], while a 2-fold increase in NNAT expression was associated with increased risk [OR = 1.52, 95% CI: 1.1, 2.1]. Following a factor analysis, all genes significantly associated with SGA or LGA status loaded onto 2 of the 8 gene-sets underlying the variability in the dataset. Our comprehensive placental profiling of imprinted genes in a large birth cohort supports the importance of these genes for fetal growth. Given that abnormal birth weight is implicated in numerous diseases and developmental abnormalities, the expression pattern of placental imprinted genes has the potential to be developed as a novel biomarker for postnatal health outcomes.
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Affiliation(s)
- Maya A Kappil
- a Department of Preventive Medicine ; Icahn School of Medicine at Mount Sinai ; New York , NY USA
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Gurnot C, Martin-Subero I, Mah SM, Weikum W, Goodman SJ, Brain U, Werker JF, Kobor MS, Esteller M, Oberlander TF, Hensch TK. Prenatal antidepressant exposure associated with CYP2E1 DNA methylation change in neonates. Epigenetics 2015; 10:361-72. [PMID: 25891251 DOI: 10.1080/15592294.2015.1026031] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Some but not all neonates are affected by prenatal exposure to serotonin reuptake inhibitor antidepressants (SRI) and maternal mood disturbances. Distinguishing the impact of these 2 exposures is challenging and raises critical questions about whether pharmacological, genetic, or epigenetic factors can explain the spectrum of reported outcomes. Using unbiased DNA methylation array measurements followed by a detailed candidate gene approach, we examined whether prenatal SRI exposure was associated with neonatal DNA methylation changes and whether such changes were associated with differences in birth outcomes. Prenatal SRI exposure was first associated with increased DNA methylation status primarily at CYP2E1(β(Non-exposed) = 0.06, β(SRI-exposed) = 0.30, FDR = 0); however, this finding could not be distinguished from the potential impact of prenatal maternal depressed mood. Then, using pyrosequencing of CYP2E1 regulatory regions in an expanded cohort, higher DNA methylation status--both the mean across 16 CpG sites (P < 0.01) and at each specific CpG site (P < 0.05)--was associated with exposure to lower 3rd trimester maternal depressed mood symptoms only in the SRI-exposed neonates, indicating a maternal mood x SRI exposure interaction. In addition, higher DNA methylation levels at CpG2 (P = 0.04), CpG9 (P = 0.04) and CpG10 (P = 0.02), in the interrogated CYP2E1 region, were associated with increased birth weight independently of prenatal maternal mood, SRI drug exposure, or gestational age at birth. Prenatal SRI antidepressant exposure and maternal depressed mood were associated with altered neonatal CYP2E1 DNA methylation status, which, in turn, appeared to be associated with birth weight.
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Affiliation(s)
- Cécile Gurnot
- a Center for Brain Science; Department of Molecular Cellular Biology; Harvard University ; Cambridge , MA , USA
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Li H, Hui X, Li P, Xu A, Li S, Jin S, Wu D. Expression and efficient purification of tag-cleaved active recombinant human insulin-like growth factor-II from Escherichia coli. BIOTECHNOL BIOPROC E 2015. [DOI: 10.1007/s12257-014-0562-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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