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Youssef L, Testa L, Crovetto F, Crispi F. 10. Role of high dimensional technology in preeclampsia (omics in preeclampsia). Best Pract Res Clin Obstet Gynaecol 2024; 92:102427. [PMID: 37995432 DOI: 10.1016/j.bpobgyn.2023.102427] [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: 06/01/2023] [Revised: 07/05/2023] [Accepted: 08/06/2023] [Indexed: 11/25/2023]
Abstract
Preeclampsia is a pregnancy-specific disease that has no known precise cause. Integrative biology approach based on multi-omics has been applied to identify upstream pathways and better understand the pathophysiology of preeclampsia. At DNA level, genomics and epigenomics studies have revealed numerous genetic variants associated with preeclampsia, including those involved in regulating blood pressure and immune response. Transcriptomics analyses have revealed altered expression of genes in preeclampsia, particularly those related to inflammation and angiogenesis. At protein level, proteomics studies have identified potential biomarkers for preeclampsia diagnosis and prediction in addition to revealing the main pathophysiological pathways involved in this disease. At metabolite level, metabolomics has highlighted altered lipid and amino acid metabolisms in preeclampsia. Finally, microbiomics studies have identified dysbiosis in the gut and vaginal microbiota in pregnant women with preeclampsia. Overall, omics technologies have improved our understanding of the complex molecular mechanisms underlying preeclampsia. However, further research is warranted to fully integrate and translate these omics findings into clinical practice.
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Affiliation(s)
- Lina Youssef
- BCNatal | Barcelona Center for Maternal Fetal and Neonatal Medicine, Hospital Clínic and Hospital Sant Joan de Déu, IDIBAPS, University of Barcelona, Barcelona, Spain; Institut de Recerca August Pi Sunyer (IDIBAPS), Barcelona, Spain; Josep Carreras Leukaemia Research Institute, Hospital Clinic/University of Barcelona Campus, Barcelona, Spain.
| | - Lea Testa
- BCNatal | Barcelona Center for Maternal Fetal and Neonatal Medicine, Hospital Clínic and Hospital Sant Joan de Déu, IDIBAPS, University of Barcelona, Barcelona, Spain
| | - Francesca Crovetto
- BCNatal | Barcelona Center for Maternal Fetal and Neonatal Medicine, Hospital Clínic and Hospital Sant Joan de Déu, IDIBAPS, University of Barcelona, Barcelona, Spain; Institut de Recerca Sant Joan de Deu (IRSJD), Barcelona, Spain
| | - Fatima Crispi
- BCNatal | Barcelona Center for Maternal Fetal and Neonatal Medicine, Hospital Clínic and Hospital Sant Joan de Déu, IDIBAPS, University of Barcelona, Barcelona, Spain; Institut de Recerca August Pi Sunyer (IDIBAPS), Barcelona, Spain; Centre for Biomedical Research on Rare Diseases (CIBER-ER), Madrid, Spain
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Zheng X, Lian Y, Zhou J, Zhou Q, Zhu Y, Tang C, Zhang P, Zhao X. Placental ischemia disrupts DNA methylation patterns in distal regulatory regions in rats. Life Sci 2023; 321:121623. [PMID: 37001402 DOI: 10.1016/j.lfs.2023.121623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 03/13/2023] [Accepted: 03/21/2023] [Indexed: 03/31/2023]
Abstract
Preeclampsia (PE) is a leading cause of maternal and fetal morbidity and mortality worldwide. However, the impact of PE on the organization of the functional architecture of the placental methylome remains largely unknown. We performed whole-genome bisulfite sequencing of placental DNA and applied a Hidden Markov Model to investigate epigenome-wide alterations in functional structures, including partially methylated domains (PMDs), low-methylated regions (LMRs), and unmethylated regions (UMRs), in a reduced uterine perfusion pressure (RUPP) rat model of PE. The remarkable similarity we observed between the rat and human placental DNA methylomes suggests that the RUPP rat model is appropriate to elucidate the epigenetic mechanisms underlying human PE. The notable changes in PMDs indicate RUPP-induced perturbation of the stressed placental methylome. This was probably regulated via modulation of the epigenetic modifier expression, including significant downregulation of Dnmt1 and Dnmt3a and upregulation of Tet2. More importantly, changes in RUPP-induced DNA methylation occurred predominately in LMRs (80 %), which represent active enhancers, rather than in canonical UMRs (3 %), which represent promoters, suggesting that placental ischemia disrupts enhancer DNA methylation. Our findings emphasize the role of enhancer methylation in response to PE, corroborating discoveries in human PE studies. We suggest paying more attention to enhancer regions in future studies on PE.
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Affiliation(s)
- Xiaoguo Zheng
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Shanghai Key Laboratory of Embryo Original Disease, Shanghai, China.
| | - Yahan Lian
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Shanghai Key Laboratory of Embryo Original Disease, Shanghai, China.
| | - Jing Zhou
- Department of Laboratory Animal Science, School of Medicine, Shanghai Jiao Tong University, Shanghai 200025, China.
| | - Qian Zhou
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Shanghai Key Laboratory of Embryo Original Disease, Shanghai, China
| | - Yu Zhu
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Shanghai Key Laboratory of Embryo Original Disease, Shanghai, China.
| | - Chunhua Tang
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Shanghai Key Laboratory of Embryo Original Disease, Shanghai, China.
| | - Ping Zhang
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Shanghai Key Laboratory of Embryo Original Disease, Shanghai, China.
| | - Xinzhi Zhao
- International Peace Maternity & Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China; Shanghai Key Laboratory of Embryo Original Disease, Shanghai, China.
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Norton C, Clarke D, Holmstrom J, Stirland I, Reynolds PR, Jenkins TG, Arroyo JA. Altered Epigenetic Profiles in the Placenta of Preeclamptic and Intrauterine Growth Restriction Patients. Cells 2023; 12:1130. [PMID: 37190039 PMCID: PMC10136447 DOI: 10.3390/cells12081130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 03/30/2023] [Accepted: 04/08/2023] [Indexed: 05/17/2023] Open
Abstract
Intrauterine growth restriction (IUGR) and preeclampsia (PE) are placental pathologies known to complicate pregnancy and cause neonatal disorders. To date, there is a limited number of studies on the genetic similarity of these conditions. DNA methylation is a heritable epigenetic process that can regulate placental development. Our objective was to identify methylation patterns in placental DNA from normal, PE and IUGR-affected pregnancies. DNA was extracted, and bisulfite was converted, prior to being hybridized for the methylation array. Methylation data were SWAN normalized and differently methylated regions were identified using applications within the USEQ program. UCSC's Genome browser and Stanford's GREAT analysis were used to identify gene promoters. The commonality among affected genes was confirmed by Western blot. We observed nine significantly hypomethylated regions, two being significantly hypomethylated for both PE and IGUR. Western blot confirmed differential protein expression of commonly regulated genes. We conclude that despite the uniqueness of methylation profiles for PE and IUGR, the similarity of some methylation alterations in pathologies could explain the clinical similarities observed with these obstetric complications. These results also provide insight into the genetic similarity between PE and IUGR and suggest possible gene candidates plausibly involved in the onset of both conditions.
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Affiliation(s)
| | | | | | | | | | | | - Juan A. Arroyo
- Department of Cell Biology and Physiology, Brigham Young University, Provo, UT 84602, USA
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Mukherjee I, Singh S, Karmakar A, Kashyap N, Mridha AR, Sharma JB, Luthra K, Sharma RS, Biswas S, Dhar R, Karmakar S. New immune horizons in therapeutics and diagnostic approaches to Preeclampsia. Am J Reprod Immunol 2023; 89:e13670. [PMID: 36565013 DOI: 10.1111/aji.13670] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 11/02/2022] [Accepted: 12/10/2022] [Indexed: 12/25/2022] Open
Abstract
Hypertensive disorders of pregnancy (HDP) are one of the commonest maladies, affecting 5%-10% of pregnancies worldwide. The American College of Obstetricians and Gynecologists (ACOG) identifies four categories of HDP, namely gestational hypertension (GH), Preeclampsia (PE), chronic hypertension (CH), and CH with superimposed PE. PE is a multisystem, heterogeneous disorder that encompasses 2%-8% of all pregnancy-related complications, contributing to about 9% to 26% of maternal deaths in low-income countries and 16% in high-income countries. These translate to 50 000 maternal deaths and over 500 000 fetal deaths worldwide, therefore demanding high priority in understanding clinical presentation, screening, diagnostic criteria, and effective management. PE is accompanied by uteroplacental insufficiency leading to vascular and metabolic changes, vasoconstriction, and end-organ ischemia. PE is diagnosed after 20 weeks of pregnancy in women who were previously normotensive or hypertensive. Besides shallow trophoblast invasion and inadequate remodeling of uterine arteries, dysregulation of the nonimmune system has been the focal point in PE. This results from aberrant immune system activation and imbalanced differentiation of T cells. Further, a failure of tolerance toward the semi-allogenic fetus results due to altered distribution of Tregs such as CD4+FoxP3+ or CD4+CD25+CD127(low) FoxP3+ cells, thereby creating a cytotoxic environment by suboptimal production of immunosuppressive cytokines like IL-10, IL-4, and IL-13. Also, intracellular production of complement protein C5a may result in decreased FoxP3+ regulatory T cells. With immune system dysfunction as a major driver in PE pathogenesis, it is logical that therapeutic targeting of components of the immune system with pharmacologic agents like anti-inflammatory and immune-modulating molecules are either being used or under clinical trial. Cholesterol synthesis inhibitors like Pravastatin may improve placental perfusion in PE, while Eculizumab (monoclonal antibody inhibiting C5) and small molecular inhibitor of C5a, Zilucoplan are under investigation. Monoclonal antibody against IL-17(Secukinumab) has been proposed to alter the Th imbalance in PE. Autologous Treg therapy and immune checkpoint inhibitors like anti-CTLA-4 are emerging as new candidates in immune horizons for PE management in the future.
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Affiliation(s)
- Indrani Mukherjee
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India.,Amity Institute of Biotechnology (AIB), Amity University, Noida, India
| | - Sunil Singh
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Abhibrato Karmakar
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Neha Kashyap
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Asit Ranjan Mridha
- Department of Obstetrics & Gynaecology, All India Institute of Medical Sciences, New Delhi, India
| | - Jai Bhagwan Sharma
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Kalpana Luthra
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Radhey Shyam Sharma
- Ex-Head and Scientist G, Indian Council of Medical Research, New Delhi, India
| | - Subhrajit Biswas
- Amity Institute of Molecular Medicine & Stem Cell Research (AIMMSCR), Amity University, Noida, India
| | - Ruby Dhar
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Subhradip Karmakar
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
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Liu S, Fu H, Ray M, Heinsberg LW, Conley YP, Anderson CM, Hubel CA, Roberts JM, Jeyabalan A, Weeks DE, Schmella MJ. A longitudinal epigenome-wide association study of preeclamptic and normotensive pregnancy. EPIGENETICS COMMUNICATIONS 2023; 3:1. [PMID: 37063698 PMCID: PMC10101051 DOI: 10.1186/s43682-022-00014-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 10/31/2022] [Indexed: 01/28/2023]
Abstract
Background While preeclampsia (PE) is a leading cause of pregnancy-related morbidity/mortality, its underlying mechanisms are not fully understood. DNA methylation (DNAm) is a dynamic regulator of gene expression that may offer insight into PE pathophysiology and/or serve as a biomarker (e.g., risk, subtype, a therapeutic response). This study's purpose was to evaluate for differences in blood-based DNAm across all trimesters between individuals eventually diagnosed with PE (cases) and individuals who remained normotensive throughout pregnancy, did not develop proteinuria, and birthed a normally grown infant (controls). Results In the discovery phase, longitudinal, genome-wide DNAm data were generated across three trimesters of pregnancy in 56 participants (n=28 cases, n=28 controls) individually matched on self-identified race, pre-pregnancy body mass index, smoking, and gestational age at sample collection. An epigenome-wide association study (EWAS) was conducted, using surrogate variable analysis to account for unwanted sources of variation. No CpGs met the genome-wide significance p value threshold of 9×10-8, but 16 CpGs (trimester 1: 5; trimester 2: 1; trimester 3: 10) met the suggestive significance threshold of 1×10-5. DNAm data were also evaluated for differentially methylated regions (DMRs) by PE status. Three DMRs in each trimester were significant after Bonferonni-adjustment. Since only third-trimester samples were available from an independent replication sample (n=64 cases, n=50 controls), the top suggestive hits from trimester 3 (cg16155413 and cg21882990 associated with TRAF3IP2-AS1/TRAF3IP2 genes, which also made up the top DMR) were carried forward for replication. During replication, DNAm data were also generated for validation purposes from discovery phase third trimester samples. While significant associations between DNAm and PE status were observed at both sites in the validation sample, no associations between DNAm and PE status were observed in the independent replication sample. Conclusions The discovery phase findings for cg16155413/cg21882990 (TRAF3IP2-AS1/TRAF3IP2) were validated with a new platform but were not replicated in an independent sample. Given the differences in participant characteristics between the discovery and replication samples, we cannot rule out important signals for these CpGs. Additional research is warranted for cg16155413/cg21882990, as well as top hits in trimesters 1-2 and significant DMRs that were not examined in the replication phase.
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Affiliation(s)
- Shuwei Liu
- Department of Human Genetics, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Haoyi Fu
- Department of Biostatistics, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Mitali Ray
- Department of Health Promotion and Development, School of Nursing, University of Pittsburgh, 440 Victoria Building, 3500 Victoria Street, Pittsburgh, PA 15261, USA
| | - Lacey W. Heinsberg
- Department of Human Genetics, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Yvette P. Conley
- Department of Human Genetics, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Health Promotion and Development, School of Nursing, University of Pittsburgh, 440 Victoria Building, 3500 Victoria Street, Pittsburgh, PA 15261, USA
| | - Cindy M. Anderson
- Martha S. Pitzer Center for Women, Children and Youth, College of Nursing, The Ohio State University, Columbus, OH, USA
| | - Carl A. Hubel
- Magee-Womens Research Institute and Foundation, Pittsburgh, PA, USA
- Department of Obstetrics, Gynecology and Reproductive Sciences, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - James M. Roberts
- Magee-Womens Research Institute and Foundation, Pittsburgh, PA, USA
- Department of Obstetrics, Gynecology and Reproductive Sciences, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Epidemiology, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
- Clinical and Translational Science Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Arun Jeyabalan
- Magee-Womens Research Institute and Foundation, Pittsburgh, PA, USA
- Department of Obstetrics, Gynecology and Reproductive Sciences, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
- Clinical and Translational Science Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Daniel E. Weeks
- Department of Human Genetics, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
- Department of Biostatistics, School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Mandy J. Schmella
- Department of Health Promotion and Development, School of Nursing, University of Pittsburgh, 440 Victoria Building, 3500 Victoria Street, Pittsburgh, PA 15261, USA
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Andrawus M, Sharvit L, Atzmon G. Epigenetics and Pregnancy: Conditional Snapshot or Rolling Event. Int J Mol Sci 2022; 23:ijms232012698. [PMID: 36293556 PMCID: PMC9603966 DOI: 10.3390/ijms232012698] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/12/2022] [Accepted: 10/19/2022] [Indexed: 11/17/2022] Open
Abstract
Epigenetics modification such as DNA methylation can affect maternal health during the gestation period. Furthermore, pregnancy can drive a range of physiological and molecular changes that have the potential to contribute to pathological conditions. Pregnancy-related risk factors include multiple environmental, behavioral, and hereditary factors that can impact maternal DNA methylation with long-lasting consequences. Identification of the epigenetic patterns linked to poor pregnancy outcomes is crucial since changes in DNA methylation patterns can have long-term effects. In this review, we provide an overview of the epigenetic changes that influence pregnancy-related molecular programming such as gestational diabetes, immune response, and pre-eclampsia, in an effort to close the gap in current understanding regarding interactions between the environment, the genetics of the fetus, and the pregnant woman.
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Ferreira BD, Barros T, Moleiro ML, Guedes-Martins L. Preeclampsia and Fetal Congenital Heart Defects. Curr Cardiol Rev 2022; 18:80-91. [PMID: 35430980 PMCID: PMC9896419 DOI: 10.2174/1573403x18666220415150943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 12/01/2021] [Accepted: 01/16/2022] [Indexed: 11/22/2022] Open
Abstract
Endothelial dysfunction, impaired implantation and placental insufficiency have been identified as mechanisms behind the development of pre-eclampsia, resulting in angiogenic factors' alteration. Angiogenic imbalance is also associated with congenital heart defects, and this common physiologic pathway may explain the association between them and pre-eclampsia. This review aims to understand the physiology shared by these two entities and whether women with pre-eclampsia have an increased risk of fetal congenital heart defects (or the opposite). The present research has highlighted multiple vasculogenic pathways associated with heart defects and preeclampsia, but also epigenetic and environmental factors, contributing both. It is also known that fetuses with a prenatal diagnosis of congenital heart disease have an increased risk of several comorbidities, including intrauterine growth restriction. Moreover, the impact of pre-eclampsia goes beyond pregnancy as it increases the risk for following pregnancies and for diseases later in life in both offspring and mothers. Given the morbidity and mortality associated with these conditions, it is of foremost importance to understand how they are related and its causative mechanisms. This knowledge may allow earlier diagnosis, an adequate surveillance or even the implementation of preventive strategies.
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Affiliation(s)
| | - Tânia Barros
- Address correspondence to this author at the Instituto de Ciências Biomédicas Abel Salazar, University of Porto, P.O. Box: 4050-313, Porto, Portugal; Tel/Fax: +351917518938; E-mail:
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Almomani SN, Alsaleh AA, Weeks RJ, Chatterjee A, Day RC, Honda I, Homma H, Fukuzawa R, Slatter TL, Hung NA, Devenish C, Morison IM, Macaulay EC. Identification and validation of DNA methylation changes in pre-eclampsia. Placenta 2021; 110:16-23. [PMID: 34098319 DOI: 10.1016/j.placenta.2021.05.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 04/25/2021] [Accepted: 05/17/2021] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Pre-eclampsia (PE) is a dangerous placental condition that can lead to premature labour, seizures and death of mother and infant. Several studies have identified altered placental DNA methylation in PE; however, there is widespread inconsistency between studies and most findings have not been replicated. This study aimed to identify and validate consistent differences in methylation across multiple PE cohorts. METHODS Seven publicly available 450K methylation array datasets were analysed to identify consistent differentially methylated positions (DMPs) in PE. DMPs were identified based on methylation difference (≥10%) and significance (p-value ≤ 1 × 10-7). Targeted deep bisulfite sequencing was then performed to validate a subset of DMPs in an additional independent PE cohort. RESULTS Stringent analysis of the seven 450K datasets identified 25 DMPs (associated with 11 genes) in only one dataset. Using more relaxed criteria confirmed 19 of the stringent 25 DMPs in at least four of the remaining six datasets. Targeted deep bisulfite sequencing of eight DMPs (associated with three genes; CMIP, ST3GAL1 and DAPK3) in an independent PE cohort validated two DMPs in the CMIP gene. Seven additional CpG sites in CMIP were found to be significantly differentially methylated in PE. DISCUSSION The identification and validation of significant differential methylation in CMIP suggests that the altered DNA methylation of this gene may be associated with the pathogenesis of PE, and may have the potential to serve as diagnostic biomarkers for this dangerous condition of pregnancy.
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Affiliation(s)
- Suzan N Almomani
- Department of Pathology, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand; Maurice Wilkins Centre for Molecular Biodiscovery, Level 2, 3A Symonds Street, Auckland, New Zealand
| | - Abdulmonem A Alsaleh
- Department of Pathology, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand; Department of Clinical Laboratory Sciences, Mohammed Al-Mana College for Medical Sciences, Dammam, Saudi Arabia
| | - Robert J Weeks
- Department of Pathology, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand
| | - Aniruddha Chatterjee
- Department of Pathology, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand; Maurice Wilkins Centre for Molecular Biodiscovery, Level 2, 3A Symonds Street, Auckland, New Zealand
| | - Robert C Day
- Department of Biochemistry, University of Otago, Dunedin, New Zealand
| | - Izumi Honda
- Department of Gynecology and Obstetrics, Tokyo Metropolitan Tama Medical Center, 2-8-29 Musashidai, Fuchu, Tokyo, 183-8524, Japan
| | - Hidekazu Homma
- Department of Neonatology, Tokyo Metropolitan Children's Medical Center, 2-8-29 Musashidai, Fuchu, Tokyo, 183-8561, Japan
| | - Ryuji Fukuzawa
- Department of Pathology, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand; Department of Pathology, International University of Health and Welfare, School of Medicine, Narita, Japan
| | - Tania L Slatter
- Department of Pathology, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand
| | - Noelyn A Hung
- Department of Pathology, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand
| | - Celia Devenish
- Women's and Children's Health, Otago Medical School Dunedin Campus, University of Otago, Dunedin, New Zealand
| | - Ian M Morison
- Department of Pathology, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand
| | - Erin C Macaulay
- Department of Pathology, Dunedin School of Medicine, University of Otago, Dunedin, New Zealand.
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Wang J, Song H, Zhang Y. Comprehensive analysis of gene expression and DNA methylation for preeclampsia progression. J Chin Med Assoc 2021; 84:410-417. [PMID: 33595987 DOI: 10.1097/jcma.0000000000000499] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND The purpose of our study is to identify novel preeclampsia (PE)-related methylation genes and uncover the molecular mechanism of PE. METHODS All the datasets of gene expression and DNA methylation datasets for PE and normal samples were obtained from the Gene Expression Omnibus database. We first identified the differentially expressed genes (DEGs) and differential methylation genes (DMGs) between PE and normal samples followed by the functional enrichment analysis. Comprehensive analysis of DEGs and DMGs was also conducted for the identification of valuable PE-related biomarkers. The methylation validation was also performed with MassARRAY. RESULTS Three DNA methylation and three gene expression datasets were incorporated. We obtained 1754 DEGs and 99 DMGs in PE samples with the thresholds of p value <0.05, |Δbeta| > 0.1, and p value <0.05, respectively. Functional analysis of DEGs obtained cell adhesion molecules and leukocyte transendothelial migration. Besides, several valuable biomarkers of PE, including OCA2, CDK2AP1, and ADAM12, were identified through the integrated analysis of gene expression and DNA methylation datasets. Four methylation sites (cg03449867, cg09084244, cg09247979, and cg24194674) were validated, among which cg03449867 and cg09084244 were found to be hypermethylated and the related genes of OCA2 and CDK2AP1 were downregulated in PE compared with normal samples simultaneously. cg24194674 was hypomethylated and its correlated gene ADAM12 was upregulated in PE compared with normal samples simultaneously. CONCLUSION Our study should be helpful for the development of potential biomarkers and therapeutic targets for PE.
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Affiliation(s)
- Jianrong Wang
- Department of Obstetrics, Dongying People's Hospital, Dongying, Shandong, China
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Maternal DNA Methylation During Pregnancy: a Review. Reprod Sci 2021; 28:2758-2769. [PMID: 33469876 DOI: 10.1007/s43032-020-00456-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 12/29/2020] [Indexed: 12/19/2022]
Abstract
Multiple environmental, behavioral, and hereditary factors affect pregnancy. Recent studies suggest that epigenetic modifications, such as DNA methylation (DNAm), affect both maternal and fetal health during the period of gestation. Some of the pregnancy-related risk factors can influence maternal DNAm, thus predisposing both the mother and the neonate to clinical adversities with long-lasting consequences. DNAm alterations in the promoter and enhancer regions modulate gene expression changes which play vital physiological role. In this review, we have discussed the recent advances in our understanding of maternal DNA methylation changes during pregnancy and its associated complications such as gestational diabetes and anemia, adverse pregnancy outcomes like preterm birth, and preeclampsia. We have also highlighted some major gaps and limitations in the area which if addressed might improve our understanding of pregnancy and its associated adverse clinical conditions, ultimately leading to healthy pregnancies and reduction of public health burden.
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A Primer on DNA Methylation and Its Potential to Impact Maternal Depression Risk and Assessment During Pregnancy and the Postpartum. J Perinat Neonatal Nurs 2021; 35:4-7. [PMID: 33528179 DOI: 10.1097/jpn.0000000000000528] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Depression onset during and after pregnancy is prevalent and associated with significant implications for maternal, child, and family health. Although environmental risk factors important to the expression of pregnancy-related depression are well known, knowledge of the genetic underpinning is limited. Given the joint contribution of environmental and genetic factors to depression risk liability, DNA methylation presents itself as an ideal biomarker to investigate basic mechanisms and opportunities for translational research to care for pregnancy-related depression health outcomes. This article is an introduction to DNA methylation and its potential to serve as a marker of depression risk during pregnancy and the postpartum. This commentary discusses current clinical uses of DNA methylation-based testing and how it may be applied to perinatal depression clinical care and management.
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Rietze AH, Conley YP, Ren D, Anderson CM, Roberts JM, Jeyabalan A, Hubel CA, Schmella MJ. DNA Methylation of Endoglin Pathway Genes in Pregnant Women With and Without Preeclampsia. Epigenet Insights 2020; 13:2516865720959682. [PMID: 33103056 PMCID: PMC7550939 DOI: 10.1177/2516865720959682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 08/25/2020] [Indexed: 11/15/2022] Open
Abstract
Objective We compared blood-based DNA methylation levels of endoglin (ENG) and transforming growth factor beta receptor 2 (TGFβR2) gene promoter regions between women with clinically-overt preeclampsia and women with uncomplicated, normotensive pregnancies. Methods We used EpiTect Methyl II PCR Assays to evaluate DNA methylation of CpG islands located in promoter regions of ENG (CpG Island 114642) and TGFβR2 (CpG Island 110111). Preeclampsia was diagnosed based on blood pressure, protein, and uric acid criteria. N = 21 nulliparous preeclampsia case participants were 1:1 frequency matched to N = 21 nulliparous normotensive control participants on gestational age at sample collection (±2 weeks), smoking status, and labor status at sample collection. Methylation values were compared between case and control participant groups [(ENG subset: n = 20 (9 cases, 11 controls); TGFβR2 subset: n = 28 (15 cases, 13 controls)]. Results The majority of the preeclampsia cases delivered at ⩾34 weeks' gestation (83%). Average methylation levels for ENG ([M ± (SD)]; Case Participant Group = 6.54% ± 4.57 versus Control Participant group = 4.81% ± 5.08; P = .102) and TGFβR2 (Case Participant Group = 1.50% ± 1.37 vs Control Participant Group = 1.70% ± 1.40; P = .695) promoter CpG islands did not differ significantly between the participant groups. Removal of 2 extreme outliers in the ENG analytic subset revealed a trend between levels of ENG methylation and pregnancy outcome (Case Participant Group = 5.17% ± 2.16 vs Control Participant Group = 3.36% ± 1.73; P = .062). Conclusion Additional epigenetic studies that include larger sample sizes, investigate preeclampsia subtypes, and capture methylation status of CpG island shores and shelves are needed to further inform us of the potential role that ENG and TGFβR2 DNA methylation plays in preeclampsia pathophysiology.
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Affiliation(s)
- Allison H Rietze
- Department of Health Promotion and Development (School of Nursing), University of Pittsburgh, Pittsburgh, PA, USA
| | - Yvette P Conley
- Department of Health Promotion and Development (School of Nursing), University of Pittsburgh, Pittsburgh, PA, USA.,Department of Human Genetics (Graduate School of Public Health), University of Pittsburgh, Pittsburgh, PA, USA
| | - Dianxu Ren
- Department of Health and Community Systems (School of Nursing), University of Pittsburgh, Pittsburgh, PA, USA
| | - Cindy M Anderson
- Martha S Pitzer Center for Women, Children, and Youth (College of Nursing), The Ohio State University, Columbus, OH, USA
| | - James M Roberts
- Department of Obstetrics, Gynecology, & Reproductive Sciences (School of Medicine), University of Pittsburgh, PA, USA.,Magee-Womens Research Institute, Pittsburgh, PA, USA.,Department of Epidemiology (Graduate School of Public Health), University of Pittsburgh, Pittsburgh, PA, USA.,Clinical and Translational Science Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Arun Jeyabalan
- Department of Obstetrics, Gynecology, & Reproductive Sciences (School of Medicine), University of Pittsburgh, PA, USA.,Magee-Womens Research Institute, Pittsburgh, PA, USA.,Clinical and Translational Science Institute, University of Pittsburgh, Pittsburgh, PA, USA
| | - Carl A Hubel
- Department of Obstetrics, Gynecology, & Reproductive Sciences (School of Medicine), University of Pittsburgh, PA, USA.,Magee-Womens Research Institute, Pittsburgh, PA, USA
| | - Mandy J Schmella
- Department of Health Promotion and Development (School of Nursing), University of Pittsburgh, Pittsburgh, PA, USA
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13
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Leseva MN, Binder AM, Ponsonby AL, Vuillermin P, Saffery R, Michels KB. Differential gene expression and limited epigenetic dysregulation at the materno-fetal interface in preeclampsia. Hum Mol Genet 2020; 29:335-350. [PMID: 31868881 DOI: 10.1093/hmg/ddz287] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 11/26/2019] [Indexed: 12/31/2022] Open
Abstract
Despite the many advances made in the diagnosis and management of preeclampsia, this syndrome remains a leading cause of maternal mortality and life-long morbidity, as well as adverse fetal outcomes. Successful prediction and therapeutic intervention require an improved understanding of the molecular mechanisms, which underlie preeclampsia pathophysiology. We have used an integrated approach to discover placental genetic and epigenetic markers of preeclampsia and validated our findings in an independent cohort of women. We observed the microRNA, MIR138, to be upregulated in singleton preeclamptic placentas; however, this appears to be a female infant sex-specific effect. We did not identify any significant differentially methylated positions (DMPs) in singleton pregnancies, indicating that DNA methylation changes in mild forms of the disease are likely limited. However, we identified infant sex-specific preeclampsia-associated differentially methylated regions among singletons. Disease-associated DMPs were more obvious in a limited sampling of twin pregnancies. Interestingly, 2 out of the 10 most significant changes in methylation over larger regions overlap between singletons and twins and correspond to NAPRT1 and ZNF417.
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Affiliation(s)
- Milena N Leseva
- Institute for Prevention and Cancer Epidemiology, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg 79110, Germany
| | - Alexandra M Binder
- Department of Epidemiology, Fielding School of Public Health, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Anne-Louise Ponsonby
- Discovery Theme, Florey Institute of Neuroscience and Mental Health, Parkville, Victoria 3052, Australia.,Cell Biology Theme, The Murdoch Children's Research Institute, Royal Children's Hospital, University of Melbourne, Parkville, Victoria 3052, Australia
| | - Peter Vuillermin
- Cell Biology Theme, The Murdoch Children's Research Institute, Royal Children's Hospital, University of Melbourne, Parkville, Victoria 3052, Australia.,School of Medicine, Deakin University, Geelong, Victoria 3220, Australia.,Child Health Research Unit, Barwon Health, Geelong, Victoria 3220, Australia
| | - Richard Saffery
- Cell Biology Theme, The Murdoch Children's Research Institute, Royal Children's Hospital, University of Melbourne, Parkville, Victoria 3052, Australia
| | - Karin B Michels
- Institute for Prevention and Cancer Epidemiology, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg 79110, Germany.,Department of Epidemiology, Fielding School of Public Health, University of California Los Angeles, Los Angeles, CA 90095, USA
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14
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Dewell S, Benzies K, Ginn C. Precision Health and Nursing: Seeing the Familiar in the Foreign. Can J Nurs Res 2020; 52:199-208. [DOI: 10.1177/0844562120945159] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Precision health is the integration of personal genomic data with biological, environmental, behavioral, and other information relevant to the care of a patient. Genetics and genomics are essential components of precision health. Genetics is the study of the effects of individual genes, and genomics is the study of all the components of the genome and interactions between genes, environmental factors, and other psychosocial and cultural factors. Knowledge about the role of genetics and genomics on health outcomes has increased substantially since the completion of the human genome project in 2003. Insights about genetics and genomics obtained from bench science are now having positive clinical implications on patient health outcomes. Nurses have the potential to make distinct contributions to precision health due to their unique role in the health care system. In this article, we discuss gaps in the development of precision health in nursing and how nursing can expand the definition of precision health to actualize its potential. Precision health plays a role in nursing practice. Understanding this connection positions nurses to incorporate genetic and genomic knowledge into their nursing practice.
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Affiliation(s)
- Sarah Dewell
- Faculty of Nursing, University of Calgary, Canada
| | | | - Carla Ginn
- Faculty of Nursing, University of Calgary, Canada
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15
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Cruz JDO, Conceição IMCA, Tosatti JAG, Gomes KB, Luizon MR. Global DNA methylation in placental tissues from pregnant with preeclampsia: A systematic review and pathway analysis. Placenta 2020; 101:97-107. [PMID: 32942147 DOI: 10.1016/j.placenta.2020.09.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 08/24/2020] [Accepted: 09/01/2020] [Indexed: 12/28/2022]
Abstract
Pre-eclampsia (PE) is the major cause of fetal and maternal mortality and can be classified according to gestational age of onset into early-onset (EOPE, <34 weeks of gestation) and late- (LOPE, ≥34 weeks of gestation). DNA methylation (DNAm) may help to understand the abnormal placentation in PE. Therefore, we performed a systematic review to assess the role of global DNAm on pathophysiology of PE, focused on fetal and maternal tissues of placenta from pregnant with PE, including EOPE and LOPE. We searched the databases EMBASE, Medline/PubMed, Cochrane Central Register of Controlled Trials, Scopus, Lilacs, Scielo and Google Scholar, and followed the MOOSE guidelines. Moreover, we performed pathway analysis with the overlapping genes from the included studies. Twelve out of 24 included studies in the qualitative analysis considered the classification into EOPE and LOPE. We did not found heterogeneity in the criteria used for diagnosis of PE, and a few studies evaluated whether confounding factors would influence placental DNAm. Fourteen out of 24 included studies showed hypomethylation in placental tissue from pregnant with PE compared to controls. The differences in DNAm are specific to genes or differentially methylated regions, and more evident in EOPE and preterm PE compared to controls, rather than LOPE and term PE. The overlapping genes from included studies revealed pathways relevant to pathophysiology of PE. Our findings highlighted the heterogeneous results of the included studies, mainly focused on North America and China. Replication studies in different populations should use the same placental tissues, techniques to assess DNAm and pipelines for bioinformatic analysis.
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Affiliation(s)
- Juliana de O Cruz
- Graduate Program in Genetics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Izabela M C A Conceição
- Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Jéssica A G Tosatti
- Department of Clinical and Toxicological Analyzes, Faculty of Pharmacy, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Karina B Gomes
- Department of Clinical and Toxicological Analyzes, Faculty of Pharmacy, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Marcelo R Luizon
- Graduate Program in Genetics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil; Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil.
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16
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Barcelona V, Wang Z, Crusto C, Hui Q, Sun YV, Taylor JY. High blood pressure in pregnancy, DNA methylation, and later blood pressure in African American women enrolled in the InterGEN Study. Birth 2020; 47:290-298. [PMID: 33448462 PMCID: PMC7876779 DOI: 10.1111/birt.12501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND Few studies have examined the effects of high blood pressure (BP) in pregnancy, preeclampsia, or eclampsia on later BP, and the epigenetics of this phenomenon is similarly poorly understood, especially among African Americans. The purpose of this study was to examine the association between high BP in pregnancy, epigenomics, and later BP in African American women in the InterGEN Study (n = 250). METHODS In cross-sectional analyses, regression and linear mixed-effects models were employed to examine the effects of high BP in pregnancy on: (a) epigenetic associations (DNA methylation) and (b) BP 3-5 years after birth. The 850K Illumina EPIC BeadChip was used for evaluating epigenome-wide DNA methylation. High BP in pregnancy, preeclampsia, or eclampsia was self-reported by women, and BP was measured 3-5 years after birth, per JNC-7 guidelines. DNA methylation and clinical BP were the main outcomes. RESULTS Mean age of enrolled women was 31.2 years, 21.8% were smokers, 58% had some college or higher education, 46.6% reported an annual income <$15 000, and 13.6% reported high BP in pregnancy. After adjustment for obesity, smoking, and age, women with a history of high BP in pregnancy had significantly higher BP than those who did not report this complication (5.39 ± 2.4 mm Hg, P = .030). Epigenome-wide analysis revealed no significant sites after multiple testing correction. CONCLUSIONS We observed a small, but clinically significant, increase in BP in women who reported high BP in pregnancy 3-5 years after that pregnancy. Future studies with larger sample sizes should examine epigenetic contributions to this finding.
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Affiliation(s)
| | - Zeyuan Wang
- Emory University Rollins School of Public Health, 201 Dowman Drive, Atlanta, Georgia 30322
| | - Cindy Crusto
- Yale University School of Medicine, 300 George St, New Haven, CT, 06511, University of Pretoria, South Africa
| | - Qin Hui
- Emory University Rollins School of Public Health, 201 Dowman Drive, Atlanta, Georgia 30322
| | - Yan V. Sun
- Emory University Rollins School of Public Health, 201 Dowman Drive, Atlanta, Georgia 30322
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17
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From animal models to patients: the role of placental microRNAs, miR-210, miR-126, and miR-148a/152 in preeclampsia. Clin Sci (Lond) 2020; 134:1001-1025. [PMID: 32337535 PMCID: PMC7239341 DOI: 10.1042/cs20200023] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 03/23/2020] [Accepted: 04/14/2020] [Indexed: 12/12/2022]
Abstract
Placental microRNAs (miRNAs) regulate the placental transcriptome and play a pathological role in preeclampsia (PE), a hypertensive disorder of pregnancy. Three PE rodent model studies explored the role of placental miRNAs, miR-210, miR-126, and miR-148/152 respectively, by examining expression of the miRNAs, their inducers, and potential gene targets. This review evaluates the role of miR-210, miR-126, and miR-148/152 in PE by comparing findings from the three rodent model studies with in vitro studies, other animal models, and preeclamptic patients to provide comprehensive insight into genetic components and pathological processes in the placenta contributing to PE. The majority of studies demonstrate miR-210 is upregulated in PE in part driven by HIF-1α and NF-κBp50, stimulated by hypoxia and/or immune-mediated processes. Elevated miR-210 may contribute to PE via inhibiting anti-inflammatory Th2-cytokines. Studies report an up- and downregulation of miR-126, arguably reflecting differences in expression between cell types and its multifunctional capacity. MiR-126 may play a pro-angiogenic role by mediating the PI3K-Akt pathway. Most studies report miR-148/152 family members are upregulated in PE. Evidence suggests they may inhibit DNA methylation of genes involved in metabolic and inflammatory pathways. Given the genetic heterogeneity of PE, it is unlikely that a single placental miRNA is a suitable therapeutic target for all patients. Investigating miRNAs in PE subtypes in patients and animal models may represent a more appropriate approach going forward. Developing methods for targeting placental miRNAs and specific placental cell types remains crucial for research seeking to target placental miRNAs as a novel treatment for PE.
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18
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Cirkovic A, Garovic V, Milin Lazovic J, Milicevic O, Savic M, Rajovic N, Aleksic N, Weissgerber T, Stefanovic A, Stanisavljevic D, Milic N. Systematic review supports the role of DNA methylation in the pathophysiology of preeclampsia: a call for analytical and methodological standardization. Biol Sex Differ 2020; 11:36. [PMID: 32631423 PMCID: PMC7336649 DOI: 10.1186/s13293-020-00313-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 06/18/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Studies have recently examined the role of epigenetic mechanisms in preeclampsia pathophysiology. One commonly examined epigenetic process is DNA methylation. This heritable epigenetic marker is involved in many important cellular functions. The aim of this study was to establish the association between DNA methylation and preeclampsia and to critically appraise the roles of major study characteristics that can significantly impact the association between DNA methylation and preeclampsia. MAIN BODY A systematic review was performed by searching PubMed, Web of Science, and EMBASE for original research articles published over time, until May 31, 2019 in English. Eligible studies compared DNA methylation levels in pregnant women with vs. without preeclampsia. Ninety articles were included. Epigenome-wide studies identified hundreds of differentially methylated places/regions in preeclamptic patients. Hypomethylation was the predominant finding in studies analyzing placental tissue (14/19), while hypermethylation was detected in three studies that analyzed maternal white blood cells (3/3). In candidate gene studies, methylation alterations for a number of genes were found to be associated with preeclampsia. A greater number of differentially methylated genes was found when analyzing more severe preeclampsia (70/82), compared to studies analyzing less severe preeclampsia vs. controls (13/27). A high degree of heterogeneity existed among the studies in terms of methodological study characteristics including design (study design, definition of preeclampsia, control group, sample size, confounders), implementation (biological sample, DNA methylation method, purification of DNA extraction, and validation of methylation), analysis (analytical method, batch effect, genotyping, and gene expression), and data presentation (methylation quantification measure, measure of variability, reporting). Based on the results of this review, we provide recommendations for study design and analytical approach for further studies. CONCLUSIONS The findings from this review support the role of DNA methylation in the pathophysiology of preeclampsia. Establishing field-wide methodological and analytical standards may increase value and reduce waste, allowing researchers to gain additional insights into the role of DNA methylation in the pathophysiology of preeclampsia.
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Affiliation(s)
- A Cirkovic
- Institute for Medical Statistics and Informatics, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - V Garovic
- Department of Internal Medicine, Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
| | - J Milin Lazovic
- Institute for Medical Statistics and Informatics, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - O Milicevic
- Institute for Medical Statistics and Informatics, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - M Savic
- Institute for Medical Statistics and Informatics, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - N Rajovic
- Institute for Medical Statistics and Informatics, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - N Aleksic
- Center for Molecular Biology, University of Vienna, Vienna, Austria
| | - T Weissgerber
- Department of Internal Medicine, Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA.,Charité - Universitätsmedizin Berlin, Berlin Institute of Health, QUEST Center, Berlin, Germany
| | - A Stefanovic
- Clinic for Gynecology and Obstetrics, Clinical Centre of Serbia, Belgrade, Serbia
| | - D Stanisavljevic
- Institute for Medical Statistics and Informatics, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - N Milic
- Institute for Medical Statistics and Informatics, Faculty of Medicine, University of Belgrade, Belgrade, Serbia. .,Department of Internal Medicine, Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA.
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19
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Abstract
Nurse scientists are generating, acquiring, distributing, processing, storing, and analyzing greater volumes of complex omics data than ever before. To take full advantage of big omics data, to address core biological questions, and to enhance patient care, however, genomic nurse scientists must embrace data science. Intended for readership with limited but expanding data science knowledge and skills, this article aims to provide a brief overview of the state of data science in genomic nursing. Our goal is to introduce key data science concepts to genomic nurses who participate at any stage of the data science lifecycle, from research patient recruitment to data wrangling, preprocessing, and analysis to implementation in clinical practice to policy creation. We address three major components in this review: (1) fundamental terminology for the field of genomic nursing data science, (2) current genomic nursing data science research exemplars, and (3) the spectrum of genomic nursing data science roles as well as education pathways and training opportunities. Links to helpful resources are included throughout the article.
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Affiliation(s)
- Caitlin Dreisbach
- School of Nursing, University of Virginia, Charlottesville, VA, USA.,Data Science Institute, University of Virginia, Charlottesville, VA, USA
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20
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Wei LL, Pan YS, Tang Q, Yang ZJ, Song WQ, Gao YF, Li J, Zhang L, Liu SG. Decreased ALCAM expression and promoter hypermethylation is associated with preeclampsia. Hypertens Res 2019; 43:13-22. [PMID: 31601971 DOI: 10.1038/s41440-019-0337-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 07/15/2019] [Accepted: 08/19/2019] [Indexed: 01/27/2023]
Abstract
Preeclampsia (PE) is a major obstetrical complication that results in maternal and fetal morbidity and mortality. Aberrant epigenetic modifications are widely involved in the pathogenesis of PE. Previously, the activated leukocyte cell adhesion molecule (ALCAM) was reported to be required for blastocyst implantation but has not been described in the context of pathological pregnancy. This study explored the expression of ALCAM and its methylation levels in the placentas and peripheral venous blood of patients with PE from a Chinese Han population. The mRNA and protein expression levels of ALCAM were downregulated in the PE placentas compared with the control placentas (P < 0.05). The methylation rate of the ALCAM gene promoter was considerably elevated in the placentas (P = 0.003, odds ratio (OR) = 0.264, 95% confidence interval (95% CI) [0.108-0.647], cases n = 47, controls n = 53) and peripheral blood (P = 0.007, OR = 0.455, 95% CI [0.256-0.806], cases n = 100, controls n = 100) of the PE patients compared with those of the normotensive women, suggesting a negative relationship between ALCAM methylation and gene transcription. Moreover, the transcriptional expression of ALCAM was dramatically increased by demethylating treatment in trophoblastic cells. ALCAM is expected to be involved in the pathogenesis of PE through methylation regulation.
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Affiliation(s)
- Li-Li Wei
- Department of Nursing, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yue-Shuai Pan
- Department of Nursing, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Qian Tang
- Prenatal Diagnosis Center, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Zong-Jun Yang
- Department of Clinical Laboratory, Qingdao Women and Children's Hospital, Qingdao, China
| | - Wei-Qing Song
- Department of Clinical Laboratory, Qingdao Municipal Hospital, Qingdao, China
| | - Yu-Fang Gao
- Department of Nursing, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jing Li
- Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Lu Zhang
- Prenatal Diagnosis Center, The Affiliated Hospital of Qingdao University, Qingdao, China.
| | - Shi-Guo Liu
- Prenatal Diagnosis Center, The Affiliated Hospital of Qingdao University, Qingdao, China.
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21
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Kamrani A, Alipourfard I, Ahmadi-Khiavi H, Yousefi M, Rostamzadeh D, Izadi M, Ahmadi M. The role of epigenetic changes in preeclampsia. Biofactors 2019; 45:712-724. [PMID: 31343798 DOI: 10.1002/biof.1542] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 06/13/2019] [Indexed: 12/11/2022]
Abstract
Preeclampsia (PE) is a disorder affecting 2-10% of pregnancies and has a major role for perinatal and maternal mortality and morbidity. PE can be occurred by initiation of new hypertension combined with proteinuria after 20 weeks gestation, as well as various reasons such as inflammatory cytokines, poor trophoblast invasion can be related with PE disease. Environmental factors can cause epigenetic changes including DNA methylation, microRNAs (miRNAs), and histone modification that may be related to different diseases such as PE. Abnormal DNA methylation during placentation is the most important epigenetic factor correlated with PE. Moreover, changes in histone modification like acetylation and also the effect of overregulation or low regulation of miRNAs or long noncoding RNAs on variety signaling pathways can be resulted in PE. The aim of this review is to describe of studies about epigenetic changes in PE and its therapeutic strategies.
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Affiliation(s)
- Amin Kamrani
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
- Student's Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Iraj Alipourfard
- Center of Pharmaceutical Sciences, Faculty of Life Sciences, University of Vienna, Vienna, Austria
| | | | - Mehdi Yousefi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Davood Rostamzadeh
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Morteza Izadi
- Health Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Majid Ahmadi
- Reproductive Biology Department, Tabriz University of Medical Sciences, Tabriz, Iran
- Women's Reproductive Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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22
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Kazmi N, Sharp GC, Reese SE, Vehmeijer FO, Lahti J, Page CM, Zhang W, Rifas-Shiman SL, Rezwan FI, Simpkin AJ, Burrows K, Richardson TG, Santos Ferreira DL, Fraser A, Harmon QE, Zhao S, Jaddoe VW, Czamara D, Binder EB, Magnus MC, Håberg SE, Nystad W, Nohr EA, Starling AP, Kechris KJ, Yang IV, DeMeo DL, Litonjua AA, Baccarelli A, Oken E, Holloway JW, Karmaus W, Arshad SH, Dabelea D, Sørensen TI, Laivuori H, Raikkonen K, Felix JF, London SJ, Hivert MF, Gaunt TR, Lawlor DA, Relton CL. Hypertensive Disorders of Pregnancy and DNA Methylation in Newborns. Hypertension 2019; 74:375-383. [PMID: 31230546 PMCID: PMC6635125 DOI: 10.1161/hypertensionaha.119.12634] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 02/23/2019] [Accepted: 05/13/2019] [Indexed: 12/15/2022]
Abstract
Hypertensive disorders of pregnancy (HDP) are associated with low birth weight, shorter gestational age, and increased risk of maternal and offspring cardiovascular diseases later in life. The mechanisms involved are poorly understood, but epigenetic regulation of gene expression may play a part. We performed meta-analyses in the Pregnancy and Childhood Epigenetics Consortium to test the association between either maternal HDP (10 cohorts; n=5242 [cases=476]) or preeclampsia (3 cohorts; n=2219 [cases=135]) and epigenome-wide DNA methylation in cord blood using the Illumina HumanMethylation450 BeadChip. In models adjusted for confounders, and with Bonferroni correction, HDP and preeclampsia were associated with DNA methylation at 43 and 26 CpG sites, respectively. HDP was associated with higher methylation at 27 (63%) of the 43 sites, and across all 43 sites, the mean absolute difference in methylation was between 0.6% and 2.6%. Epigenome-wide associations of HDP with offspring DNA methylation were modestly consistent with the equivalent epigenome-wide associations of preeclampsia with offspring DNA methylation (R2=0.26). In longitudinal analyses conducted in 1 study (n=108 HDP cases; 550 controls), there were similar changes in DNA methylation in offspring of those with and without HDP up to adolescence. Pathway analysis suggested that genes located at/near HDP-associated sites may be involved in developmental, embryogenesis, or neurological pathways. HDP is associated with offspring DNA methylation with potential relevance to development.
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Affiliation(s)
- Nabila Kazmi
- From the MRC Integrative Epidemiology Unit (N.K., G.C.S., A.J.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.I.A.S., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School (N.K., G.C.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
| | - Gemma C. Sharp
- From the MRC Integrative Epidemiology Unit (N.K., G.C.S., A.J.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.I.A.S., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School (N.K., G.C.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
- School of Oral and Dental Sciences (G.C.S.), University of Bristol, United Kingdom
| | - Sarah E. Reese
- Division of Intramural Research, Department of Health and Human Services, National Institute of Environmental Health Sciences, National Institutes of Health, Durham, NC (S.E.R., Q.E.H., S.Z., S.J.L.)
| | - Florianne O. Vehmeijer
- The Generation R Study Group (F.O.V., V.W.V.J., J.F.F.), Erasmus MC, University Medical Center Rotterdam, the Netherlands
- Department of Epidemiology (F.O.V., V.W.V.J., J.F.F.), Erasmus MC, University Medical Center Rotterdam, the Netherlands
- Department of Pediatrics (F.O.V., V.W.V.J., J.F.F.), Erasmus MC, University Medical Center Rotterdam, the Netherlands
| | - Jari Lahti
- Department of Psychology and Logopedics, Faculty of Medicine (J.L., K.R.), University of Helsinki, Finland
- Helsinki Collegium of Advanced Studies (J.L.), University of Helsinki, Finland
| | - Christian M. Page
- Division of Mental and Physical Health (C.M.P., W.N.), Norwegian Institute of Public Health, Oslo
- Oslo Centre for Biostatistics and Epidemiology, Oslo University Hospital, Norway (C.M.P.)
| | - Weiming Zhang
- Department of Biostatistics and Informatics (W.Z., K.J.K.), University of Colorado Anschutz Medical Campus, Aurora
| | - Sheryl L. Rifas-Shiman
- Department of Population Medicine, Harvard Medical School, Harvard Pilgrim Health Care Institute, Boston, MA (S.L.R.-S., E.O., M.-F.H.)
| | - Faisal I. Rezwan
- Human Development and Health (F.I.R., J.W.H.), Faculty of Medicine University of Southampton, United Kingdom
| | - Andrew J. Simpkin
- From the MRC Integrative Epidemiology Unit (N.K., G.C.S., A.J.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.I.A.S., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
- Insight Centre for Data Analytics, National University of Ireland, Galway (A.J.S.)
| | - Kimberley Burrows
- From the MRC Integrative Epidemiology Unit (N.K., G.C.S., A.J.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.I.A.S., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School (N.K., G.C.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
| | - Tom G. Richardson
- From the MRC Integrative Epidemiology Unit (N.K., G.C.S., A.J.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.I.A.S., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School (N.K., G.C.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
| | - Diana L. Santos Ferreira
- From the MRC Integrative Epidemiology Unit (N.K., G.C.S., A.J.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.I.A.S., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School (N.K., G.C.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
| | - Abigail Fraser
- From the MRC Integrative Epidemiology Unit (N.K., G.C.S., A.J.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.I.A.S., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School (N.K., G.C.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
| | - Quaker E. Harmon
- Division of Intramural Research, Department of Health and Human Services, National Institute of Environmental Health Sciences, National Institutes of Health, Durham, NC (S.E.R., Q.E.H., S.Z., S.J.L.)
| | - Shanshan Zhao
- Division of Intramural Research, Department of Health and Human Services, National Institute of Environmental Health Sciences, National Institutes of Health, Durham, NC (S.E.R., Q.E.H., S.Z., S.J.L.)
| | - Vincent W.V. Jaddoe
- The Generation R Study Group (F.O.V., V.W.V.J., J.F.F.), Erasmus MC, University Medical Center Rotterdam, the Netherlands
- Department of Epidemiology (F.O.V., V.W.V.J., J.F.F.), Erasmus MC, University Medical Center Rotterdam, the Netherlands
- Department of Pediatrics (F.O.V., V.W.V.J., J.F.F.), Erasmus MC, University Medical Center Rotterdam, the Netherlands
| | - Darina Czamara
- Department of Translational Research in Psychiatry, Max-Planck Institute of Psychiatry, Munich, Germany (D.C., E.B.B.)
| | - Elisabeth B. Binder
- Department of Translational Research in Psychiatry, Max-Planck Institute of Psychiatry, Munich, Germany (D.C., E.B.B.)
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA (E.B.B.)
| | - Maria C. Magnus
- From the MRC Integrative Epidemiology Unit (N.K., G.C.S., A.J.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.I.A.S., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School (N.K., G.C.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
- Centre for Fertility and Health (M.C.M., S.E.H.), Norwegian Institute of Public Health, Oslo
| | - Siri E. Håberg
- Centre for Fertility and Health (M.C.M., S.E.H.), Norwegian Institute of Public Health, Oslo
| | - Wenche Nystad
- Division of Mental and Physical Health (C.M.P., W.N.), Norwegian Institute of Public Health, Oslo
| | - Ellen A. Nohr
- Research Unit of Gynaecology and Obstetrics, Department of Clinical Research, University of Southern Denmark, Odense (E.A.N.)
| | - Anne P. Starling
- Department of Epidemiology (A.P.S., I.V.Y., D.D.), University of Colorado Anschutz Medical Campus, Aurora
| | - Katerina J. Kechris
- Department of Biostatistics and Informatics (W.Z., K.J.K.), University of Colorado Anschutz Medical Campus, Aurora
| | - Ivana V. Yang
- Department of Epidemiology (A.P.S., I.V.Y., D.D.), University of Colorado Anschutz Medical Campus, Aurora
- Department of Medicine (I.V.Y.), University of Colorado Anschutz Medical Campus, Aurora
- Center for Genes, Environment and Health, National Jewish Health, Denver, CO (I.V.Y.)
| | - Dawn L. DeMeo
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA (D.L.D.)
| | - Augusto A. Litonjua
- Division of Pediatric Pulmonary Medicine, University of Rochester Medical Center, NY (A.A.L.)
| | - Andrea Baccarelli
- Laboratory of Precision Environmental Biosciences, Columbia University Mailman School of Public Health, New York, NY (A.B.)
| | - Emily Oken
- Department of Population Medicine, Harvard Medical School, Harvard Pilgrim Health Care Institute, Boston, MA (S.L.R.-S., E.O., M.-F.H.)
| | - John W. Holloway
- Human Development and Health (F.I.R., J.W.H.), Faculty of Medicine University of Southampton, United Kingdom
- Clinical and Experimental Sciences (J.W.H., S.H.A.), Faculty of Medicine University of Southampton, United Kingdom
| | - Wilfried Karmaus
- Division of Epidemiology, Biostatistics, and Environmental Health, School of Public Health, University of Memphis, TN (W.K.)
| | - Syed H. Arshad
- Clinical and Experimental Sciences (J.W.H., S.H.A.), Faculty of Medicine University of Southampton, United Kingdom
| | - Dana Dabelea
- Department of Epidemiology (A.P.S., I.V.Y., D.D.), University of Colorado Anschutz Medical Campus, Aurora
- Department of Pediatrics (D.D.), University of Colorado Anschutz Medical Campus, Aurora
| | - Thorkild I.A. Sørensen
- From the MRC Integrative Epidemiology Unit (N.K., G.C.S., A.J.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.I.A.S., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
- Novo Nordisk Foundation Center for Basic Metabolic Research, Section on Metabolic Genetics (T.I.A.S.), Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
- Department of Public Health, Section on Epidemiology (T.I.A.S.), Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
| | - Hannele Laivuori
- Institute for Molecular Medicine Finland, Helsinki Institute of Life Science (H.L.), University of Helsinki, Finland
- Medical and Clinical Genetics, University of Helsinki and Helsinki University Hospital, Finland (H.L.)
- Faculty of Medicine and Life Sciences, University of Tampere, Finland (H.L.)
- Department of Obstetrics and Gynecology, Tampere University Hospital, Tampere, Finland (H.L.)
- Institute for Molecular Medicine Finland, Helsinki Institute of Life Science, University of Helsinki, Helsinki. Finland (H.L.)
| | - Katri Raikkonen
- Department of Psychology and Logopedics, Faculty of Medicine (J.L., K.R.), University of Helsinki, Finland
| | - Janine F. Felix
- The Generation R Study Group (F.O.V., V.W.V.J., J.F.F.), Erasmus MC, University Medical Center Rotterdam, the Netherlands
- Department of Epidemiology (F.O.V., V.W.V.J., J.F.F.), Erasmus MC, University Medical Center Rotterdam, the Netherlands
- Department of Pediatrics (F.O.V., V.W.V.J., J.F.F.), Erasmus MC, University Medical Center Rotterdam, the Netherlands
| | - Stephanie J. London
- Division of Intramural Research, Department of Health and Human Services, National Institute of Environmental Health Sciences, National Institutes of Health, Durham, NC (S.E.R., Q.E.H., S.Z., S.J.L.)
| | - Marie-France Hivert
- Department of Population Medicine, Harvard Medical School, Harvard Pilgrim Health Care Institute, Boston, MA (S.L.R.-S., E.O., M.-F.H.)
- Diabetes Unit, Massachusetts General Hospital, Boston, MA (M.-F.H.)
| | - Tom R. Gaunt
- From the MRC Integrative Epidemiology Unit (N.K., G.C.S., A.J.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.I.A.S., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School (N.K., G.C.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
- NIHR Bristol Biomedical Research Centre, Bristol, United Kingdom (T.R.G., D.A.L., C.L.R.)
| | - Debbie A. Lawlor
- From the MRC Integrative Epidemiology Unit (N.K., G.C.S., A.J.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.I.A.S., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School (N.K., G.C.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
- NIHR Bristol Biomedical Research Centre, Bristol, United Kingdom (T.R.G., D.A.L., C.L.R.)
| | - Caroline L. Relton
- From the MRC Integrative Epidemiology Unit (N.K., G.C.S., A.J.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.I.A.S., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
- Population Health Sciences, Bristol Medical School (N.K., G.C.S., K.B., T.G.R., D.L.S.F., A.F., M.C.M., T.R.G., D.A.L., C.L.R.), University of Bristol, United Kingdom
- NIHR Bristol Biomedical Research Centre, Bristol, United Kingdom (T.R.G., D.A.L., C.L.R.)
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Apicella C, Ruano CSM, Méhats C, Miralles F, Vaiman D. The Role of Epigenetics in Placental Development and the Etiology of Preeclampsia. Int J Mol Sci 2019; 20:ijms20112837. [PMID: 31212604 PMCID: PMC6600551 DOI: 10.3390/ijms20112837] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 06/03/2019] [Accepted: 06/03/2019] [Indexed: 12/12/2022] Open
Abstract
In this review, we comprehensively present the function of epigenetic regulations in normal placental development as well as in a prominent disease of placental origin, preeclampsia (PE). We describe current progress concerning the impact of DNA methylation, non-coding RNA (with a special emphasis on long non-coding RNA (lncRNA) and microRNA (miRNA)) and more marginally histone post-translational modifications, in the processes leading to normal and abnormal placental function. We also explore the potential use of epigenetic marks circulating in the maternal blood flow as putative biomarkers able to prognosticate the onset of PE, as well as classifying it according to its severity. The correlation between epigenetic marks and impacts on gene expression is systematically evaluated for the different epigenetic marks analyzed.
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Affiliation(s)
- Clara Apicella
- Institut Cochin, U1016 INSERM, UMR8104 CNRS, Université Paris Descartes, 24 rue du faubourg St Jacques, 75014 Paris, France.
| | - Camino S M Ruano
- Institut Cochin, U1016 INSERM, UMR8104 CNRS, Université Paris Descartes, 24 rue du faubourg St Jacques, 75014 Paris, France.
| | - Céline Méhats
- Institut Cochin, U1016 INSERM, UMR8104 CNRS, Université Paris Descartes, 24 rue du faubourg St Jacques, 75014 Paris, France.
| | - Francisco Miralles
- Institut Cochin, U1016 INSERM, UMR8104 CNRS, Université Paris Descartes, 24 rue du faubourg St Jacques, 75014 Paris, France.
| | - Daniel Vaiman
- Institut Cochin, U1016 INSERM, UMR8104 CNRS, Université Paris Descartes, 24 rue du faubourg St Jacques, 75014 Paris, France.
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24
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Anderson CM, Gillespie SL, Thiele DK, Ralph JL, Ohm JE. Effects of Maternal Vitamin D Supplementation on the Maternal and Infant Epigenome. Breastfeed Med 2018; 13:371-380. [PMID: 29782187 PMCID: PMC6004083 DOI: 10.1089/bfm.2017.0231] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Mothers and infants are at high risk for inadequate vitamin D status. Mechanisms by which vitamin D may affect maternal and infant DNA methylation are poorly understood. OBJECTIVE This study quantified the effects of vitamin D3 supplementation on DNA methylation in pregnant and lactating women and their breastfed infants. MATERIALS AND METHODS In this randomized controlled pilot study, pregnant women received vitamin D3 400 international units (IU) (n = 6; control) or 3,800 IU (n = 7; intervention) daily from late second trimester through 4-6 weeks postpartum. Epigenome-wide DNA methylation was quantified in leukocytes collected from mothers at birth and mother-infant dyads at 4-6 weeks postpartum. RESULTS At birth, intervention group mothers showed DNA methylation gain and loss at 76 and 89 cytosine-guanine (CpG) dinucleotides, respectively, compared to controls. Postpartum, methylation gain was noted at 200 and loss at 102 CpGs. Associated gene clusters showed strongest biologic relevance for cell migration/motility and cellular membrane function at birth and cadherin signaling and immune function at postpartum. Breastfed 4-6-week-old infants of intervention mothers showed DNA methylation gain and loss in 217 and 213 CpGs, respectively, compared to controls. Genes showing differential methylation mapped most strongly to collagen metabolic processes and regulation of apoptosis. CONCLUSIONS Maternal vitamin D supplementation during pregnancy and lactation alters DNA methylation in mothers and breastfed infants. Additional work is needed to fully elucidate the short- and long-term biologic effects of vitamin D supplementation at varying doses, which could hold important implications for establishing clinical recommendations for prenatal and offspring health promotion.
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Affiliation(s)
- Cindy M Anderson
- 1 Center for Women, Children and Youth, The Ohio State University College of Nursing , Columbus, Ohio
| | - Shannon L Gillespie
- 1 Center for Women, Children and Youth, The Ohio State University College of Nursing , Columbus, Ohio
| | - Doria K Thiele
- 2 Department of Nursing, University of North Dakota College of Nursing and Professional Disciplines , Grand Forks, North Dakota
| | - Jody L Ralph
- 2 Department of Nursing, University of North Dakota College of Nursing and Professional Disciplines , Grand Forks, North Dakota.,3 University of Windsor , Faculty of Nursing, Windsor, Ontario, Canada
| | - Joyce E Ohm
- 4 Department of Cancer Genetics and Genomics, Roswell Park Cancer Institute , Buffalo, New York
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25
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Li X, Wu C, Shen Y, Wang K, Tang L, Zhou M, Yang M, Pan T, Liu X, Xu W. Ten-eleven translocation 2 demethylates the MMP9 promoter, and its down-regulation in preeclampsia impairs trophoblast migration and invasion. J Biol Chem 2018; 293:10059-10070. [PMID: 29773648 DOI: 10.1074/jbc.ra117.001265] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 04/22/2018] [Indexed: 12/24/2022] Open
Abstract
Preeclampsia is the most common clinical disorder in pregnancy and might result from disordered uterine environments caused by epigenetic modifications, including deregulation of DNA methylation/demethylation. Recent research has indicated that 5-hydroxymethylcytosine (5hmC), a DNA base derived from 5-methylcytosine (5mC) via oxidation by ten-eleven translocation (TET) enzymes, is involved in DNA methylation-related plasticity. Here, we report that TET2 expression and 5hmC abundance are significantly altered in the placentas from preeclampsia patients. shRNA-mediated TET2 knockdown (shTET2) reduced trophoblast migration and invasion when cultured in Matrigel. Both real-time PCR of matrix metalloproteinase (MMP)-related transcripts and a human angiogenesis antibody array indicated that TET2 knockdown in trophoblasts inhibits the expression of MMP transcript, of which MMP9 represented one of the most significant TET2 downstream targets. Using an established shTET2 HTR-8/SVneo cell model, we further confirmed alterations of 5hmC levels and MMP9 expression at both mRNA and protein levels. In particular, we found that TET2 bound to and removed 5mC modifications at the MMP9 promoter region. Interestingly, in TET2 knockdown cells, both MMP9 expression and the compromised trophoblast phenotype could be rescued by vitamin C, an activator of TET enzyme activity. Finally, TET2 expression correlated with MMP9 levels in placenta samples from the preeclampsia patients, indicating that TET2 deregulation is critically involved in the pathogenesis of preeclampsia through down-regulation of MMP9 expression. Our findings highlight a critical role of TET2 in regulating trophoblast cell migration through demethylation at the MMP9 promoter, and suggest that down-regulation of the TET2-MMP9-mediated pathway contributes to preeclampsia pathogenesis.
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Affiliation(s)
- Xiaoliang Li
- From the Joint Laboratory of Reproductive Medicine, SCU-CUHK, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu 610041, China.,Department of Obstetric and Gynecologic Diseases, West China Second University Hospital, Sichuan University, Chengdu 610041, China, and.,Key Laboratory of Southwest China Wildlife Resource Conservation (China West Normal University), Ministry of Education, Nanchong 637009 China
| | - Chunlian Wu
- Key Laboratory of Southwest China Wildlife Resource Conservation (China West Normal University), Ministry of Education, Nanchong 637009 China
| | - Ying Shen
- From the Joint Laboratory of Reproductive Medicine, SCU-CUHK, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu 610041, China.,Department of Obstetric and Gynecologic Diseases, West China Second University Hospital, Sichuan University, Chengdu 610041, China, and
| | - Ke Wang
- From the Joint Laboratory of Reproductive Medicine, SCU-CUHK, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu 610041, China.,Department of Obstetric and Gynecologic Diseases, West China Second University Hospital, Sichuan University, Chengdu 610041, China, and
| | - Li Tang
- From the Joint Laboratory of Reproductive Medicine, SCU-CUHK, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu 610041, China.,Department of Obstetric and Gynecologic Diseases, West China Second University Hospital, Sichuan University, Chengdu 610041, China, and
| | - Mi Zhou
- From the Joint Laboratory of Reproductive Medicine, SCU-CUHK, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu 610041, China.,Department of Obstetric and Gynecologic Diseases, West China Second University Hospital, Sichuan University, Chengdu 610041, China, and
| | - Ming Yang
- From the Joint Laboratory of Reproductive Medicine, SCU-CUHK, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu 610041, China.,Department of Obstetric and Gynecologic Diseases, West China Second University Hospital, Sichuan University, Chengdu 610041, China, and
| | - Tianying Pan
- From the Joint Laboratory of Reproductive Medicine, SCU-CUHK, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu 610041, China.,Department of Obstetric and Gynecologic Diseases, West China Second University Hospital, Sichuan University, Chengdu 610041, China, and
| | - Xinghui Liu
- Department of Obstetric and Gynecologic Diseases, West China Second University Hospital, Sichuan University, Chengdu 610041, China, and
| | - Wenming Xu
- From the Joint Laboratory of Reproductive Medicine, SCU-CUHK, Key Laboratory of Obstetric, Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu 610041, China, .,Department of Obstetric and Gynecologic Diseases, West China Second University Hospital, Sichuan University, Chengdu 610041, China, and
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Affiliation(s)
- Sharvari S. Deshpande
- Department of Neuroendocrinology, National Institute for Research in Reproductive Health (ICMR), Parel, Mumbai, India
| | - Nafisa H. Balasinor
- Department of Neuroendocrinology, National Institute for Research in Reproductive Health (ICMR), Parel, Mumbai, India
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Gunnarsdottir J, Cnattingius S, Lundgren M, Selling K, Högberg U, Wikström AK. Prenatal exposure to preeclampsia is associated with accelerated height gain in early childhood. PLoS One 2018; 13:e0192514. [PMID: 29438394 PMCID: PMC5811001 DOI: 10.1371/journal.pone.0192514] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 01/24/2018] [Indexed: 11/18/2022] Open
Abstract
Background Preeclampsia is associated with low birth weight, both because of increased risks of preterm and of small-for-gestational-age (SGA) births. Low birth weight is associated with accelerated childhood height gain and cardiovascular diseases later in life. The aim was to investigate if prenatal exposure to preeclampsia is associated with accelerated childhood height gain, also after adjustments for SGA-status and gestational age at birth. Methods In a cohort of children prenatally exposed to preeclampsia (n = 865) or unexposed (n = 22,898) we estimated height gain between birth and five years of age. The mean difference in height gain between exposed and unexposed children was calculated and adjustments were done with linear regression models. Results Children exposed to preeclampsia were on average born shorter than unexposed. Exposed children grew on average two cm more than unexposed from birth to five years of age. After adjustments for maternal characteristics including socioeconomic factors, height, body mass index (BMI) and diabetes, as well as for parents smoking habits, infant’s breastfeeding and childhood obesity, the difference was 1.6 cm (95% CI 1.3–1.9 cm). Further adjustment for SGA birth only slightly attenuated this estimate, but adjustment for gestational age at birth decreased the estimate to 0.5 cm (95% CI 0.1–0.7 cm). Conclusion Prenatal exposure to preeclampsia is associated with accelerated height gain in early childhood. The association seemed independent on SGA-status, but partly related to shorter gestational age at birth.
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Affiliation(s)
- Johanna Gunnarsdottir
- Department of Women’s and Children’s Health, Uppsala University, Uppsala, Sweden
- * E-mail:
| | - Sven Cnattingius
- Department of Medicine, Clinical Epidemiology Unit, Karolinska Institutet, Stockholm, Sweden
| | - Maria Lundgren
- Department of Women’s and Children’s Health, Uppsala University, Uppsala, Sweden
| | - Katarina Selling
- Department of Women’s and Children’s Health, Uppsala University, Uppsala, Sweden
| | - Ulf Högberg
- Department of Women’s and Children’s Health, Uppsala University, Uppsala, Sweden
| | - Anna-Karin Wikström
- Department of Women’s and Children’s Health, Uppsala University, Uppsala, Sweden
- Department of Medicine, Clinical Epidemiology Unit, Karolinska Institutet, Stockholm, Sweden
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Knight AK, Conneely KN, Kilaru V, Cobb D, Payne JL, Meilman S, Corwin EJ, Kaminsky ZA, Dunlop AL, Smith AK. SLC9B1 methylation predicts fetal intolerance of labor. Epigenetics 2018; 13:33-39. [PMID: 29235940 DOI: 10.1080/15592294.2017.1411444] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Fetal intolerance of labor is a common indication for delivery by Caesarean section. Diagnosis is based on the presence of category III fetal heart rate tracing, which is an abnormal heart tracing associated with increased likelihood of fetal hypoxia and metabolic acidemia. This study analyzed data from 177 unique women who, during their prenatal visits (7-15 weeks and/or 24-32 weeks) to Atlanta area prenatal care clinics, consented to provide blood samples for DNA methylation (HumanMethylation450 BeadChip) and gene expression (Human HT-12 v4 Expression BeadChip) analyses. We focused on 57 women aged 18-36 (mean 25.4), who had DNA methylation data available from their second prenatal visit. DNA methylation patterns at CpG sites across the genome were interrogated for associations with fetal intolerance of labor. Four CpG sites (P value <8.9 × 10-9, FDR <0.05) in gene SLC9B1, a Na+/H+ exchanger, were associated with fetal intolerance of labor. DNA methylation and gene expression were negatively associated when examined longitudinally during pregnancy using a linear mixed-effects model. Positive predictive values of methylation of these four sites ranged from 0.80 to 0.89, while negative predictive values ranged from 0.91 to 0.92. The four CpG sites were also associated with fetal intolerance of labor in an independent cohort (the Johns Hopkins Prospective PPD cohort). Therefore, fetal intolerance of labor could be accurately predicted from maternal blood samples obtained between 24-32 weeks gestation. Fetal intolerance of labor may be accurately predicted from maternal blood samples obtained between 24-32 weeks gestation by assessing DNA methylation patterns of SLC9B1. The identification of pregnant women at elevated risk for fetal intolerance of labor may allow for the development of targeted treatments or management plans.
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Affiliation(s)
- Anna K Knight
- a Genetics and Molecular Biology Program , Emory University , 1462 Clifton Road, Atlanta , GA , 30322
| | - Karen N Conneely
- a Genetics and Molecular Biology Program , Emory University , 1462 Clifton Road, Atlanta , GA , 30322.,b Department of Human Genetics , Emory University , 615 Michael St NE, Atlanta , GA , 30322
| | - Varun Kilaru
- c Department of Gynecology and Obstetrics , Emory University , 101 Woodruff Circle NE, Atlanta , GA
| | - Dawayland Cobb
- c Department of Gynecology and Obstetrics , Emory University , 101 Woodruff Circle NE, Atlanta , GA
| | - Jennifer L Payne
- d Women's Mood Disorders Center , Johns Hopkins School of Medicine , 550 N. Broadway, Suite 305, Baltimore , MD 21205
| | - Samantha Meilman
- d Women's Mood Disorders Center , Johns Hopkins School of Medicine , 550 N. Broadway, Suite 305, Baltimore , MD 21205
| | - Elizabeth J Corwin
- e Nell Hodgson Woodruff School of Nursing , Emory University , 1520 Clifton Road, Atlanta , GA , 30322
| | - Zachary A Kaminsky
- f Department of Psychiatry , Johns Hopkins School of Medicine , 720 Rutland Avenue, Baltimore , MD , 21205 ; Johns Hopkins Bloomberg School of Public Health , 615 N. Wolfe St, Baltimore , MD , 21205
| | - Anne L Dunlop
- e Nell Hodgson Woodruff School of Nursing , Emory University , 1520 Clifton Road, Atlanta , GA , 30322
| | - Alicia K Smith
- a Genetics and Molecular Biology Program , Emory University , 1462 Clifton Road, Atlanta , GA , 30322.,c Department of Gynecology and Obstetrics , Emory University , 101 Woodruff Circle NE, Atlanta , GA.,g Department of Psychiatry & Behavioral Sciences , Emory University , 101 Woodruff Circle NE, Atlanta , GA
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Wang X, Wan L, Weng X, Xie J, Zhang A, Liu Y, Dong M. Alteration in methylation level at differential methylated regions of MEST and DLK1 in fetus of preeclampsia. Hypertens Pregnancy 2017; 37:1-8. [PMID: 29157033 DOI: 10.1080/10641955.2017.1397689] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVES Offspring born to preeclamptic women are at high risk for metabolic diseases in later life, but the mechanisms are not known. The purposes of the current investigation were to clarify the changes in DNA methylation at MEST and DLK1 DMRs in fetus of preeclampsia and to explore the possible mechanisms behind the high risk of adult diseases in the offspring of preeclampsia. METHODS Fetal lymphocytes were isolated from umbilical cord blood of 78 women with preeclampsia and 95 women with normal pregnancy. Genomic DNA was extracted and then DNA methylation levels of MEST and DLK1 DMRs were determined by MassARRAY quantitative methylation analysis. RESULTS The methylation levels were detected in 20 CpG sites of MEST DMR and 16 sites of DLK1 DMR. Methylation changes were significantly different at CPG1, 3, 4, 7.8, 15, 18.19, and 20 of MEST between preeclampsia and normal pregnancy (P = 0.014, 0.001, <0.001, <0.001, = 0.001, = 0.005, and = 0.003, respectively). Significant differences were also observed at CPG 3 and 9 of DLK1 (P = 0.002 and 0.027, respectively). However, overall methylation at these DMRs were not affected. CONCLUSION We conclude methylation changes at some CpG sites of MEST and DLK DMRs in preeclamptic group. This may be among the mechanisms behind the high risk of adult diseases in the later life of offspring born to preeclamptic pregnancies. ABBREVIATIONS DMR: Differentially Methylated Region; MEST: Mesoderm Specific Transcript.
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Affiliation(s)
- Xiaoqing Wang
- a Women's Hospital, School of Medicine , Zhejiang University.,b Ningbo Women and Children's Hospital , Ningbo , China
| | - Liuxia Wan
- a Women's Hospital, School of Medicine , Zhejiang University
| | - Xiaoling Weng
- a Women's Hospital, School of Medicine , Zhejiang University
| | - Jiamin Xie
- a Women's Hospital, School of Medicine , Zhejiang University
| | - Aiping Zhang
- c Bio-X Institutes, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University , Shanghai , China
| | - Yun Liu
- d Department of Biochemistry and Molecular Biology , Fudan University Shanghai Medical College , Shanghai , China.,e Department of Biochemistry and Molecular Biology , Key Laboratory of Molecular Medicine, The Ministry of Education, Fudan University Shanghai Medical College
| | - Minyue Dong
- a Women's Hospital, School of Medicine , Zhejiang University
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Huang A, Wu H, Iriyama T, Zhang Y, Sun K, Song A, Liu H, Peng Z, Tang L, Lee M, Huang Y, Ni X, Kellems RE, Xia Y. Elevated Adenosine Induces Placental DNA Hypomethylation Independent of A2B Receptor Signaling in Preeclampsia. Hypertension 2017; 70:209-218. [PMID: 28507174 DOI: 10.1161/hypertensionaha.117.09536] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Revised: 04/18/2017] [Accepted: 04/22/2017] [Indexed: 12/20/2022]
Abstract
Preeclampsia is a prevalent pregnancy hypertensive disease with both maternal and fetal morbidity and mortality. Emerging evidence indicates that global placental DNA hypomethylation is observed in patients with preeclampsia and is linked to altered gene expression and disease development. However, the molecular basis underlying placental epigenetic changes in preeclampsia remains unclear. Using 2 independent experimental models of preeclampsia, adenosine deaminase-deficient mice and a pathogenic autoantibody-induced mouse model of preeclampsia, we demonstrate that elevated placental adenosine not only induces hallmark features of preeclampsia but also causes placental DNA hypomethylation. The use of genetic approaches to express an adenosine deaminase minigene specifically in placentas, or adenosine deaminase enzyme replacement therapy, restored placental adenosine to normal levels, attenuated preeclampsia features, and abolished placental DNA hypomethylation in adenosine deaminase-deficient mice. Genetic deletion of CD73 (an ectonucleotidase that converts AMP to adenosine) prevented the elevation of placental adenosine in the autoantibody-induced preeclampsia mouse model and ameliorated preeclampsia features and placental DNA hypomethylation. Immunohistochemical studies revealed that elevated placental adenosine-mediated DNA hypomethylation predominantly occurs in spongiotrophoblasts and labyrinthine trophoblasts and that this effect is independent of A2B adenosine receptor activation in both preeclampsia models. Extending our mouse findings to humans, we used cultured human trophoblasts to demonstrate that adenosine functions intracellularly and induces DNA hypomethylation without A2B adenosine receptor activation. Altogether, both mouse and human studies reveal novel mechanisms underlying placental DNA hypomethylation and potential therapeutic approaches for preeclampsia.
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Affiliation(s)
- Aji Huang
- From the Xiangya Hospital, Central South University, Changsha, China (A.H., Z.P., L.T., Y.X.); Department of Biochemistry and Molecular Biology, McGovern Medical School (A.H., H.W., T.I., Y.Z., K.S., A.S., H.L., Z.P., R.E.K., Y.X.) and Graduate School of Biomedical Sciences (K.S., H.L., R.E.K., Y.X.), University of Texas at Houston; Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Japan (T.I.); Institute of Biosciences and Technology, Texas A&M University, Houston (M.L., Y.H.); and Department of Physiology, The Second Military Medical School, Shanghai, China (X.N.)
| | - Hongyu Wu
- From the Xiangya Hospital, Central South University, Changsha, China (A.H., Z.P., L.T., Y.X.); Department of Biochemistry and Molecular Biology, McGovern Medical School (A.H., H.W., T.I., Y.Z., K.S., A.S., H.L., Z.P., R.E.K., Y.X.) and Graduate School of Biomedical Sciences (K.S., H.L., R.E.K., Y.X.), University of Texas at Houston; Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Japan (T.I.); Institute of Biosciences and Technology, Texas A&M University, Houston (M.L., Y.H.); and Department of Physiology, The Second Military Medical School, Shanghai, China (X.N.)
| | - Takayuki Iriyama
- From the Xiangya Hospital, Central South University, Changsha, China (A.H., Z.P., L.T., Y.X.); Department of Biochemistry and Molecular Biology, McGovern Medical School (A.H., H.W., T.I., Y.Z., K.S., A.S., H.L., Z.P., R.E.K., Y.X.) and Graduate School of Biomedical Sciences (K.S., H.L., R.E.K., Y.X.), University of Texas at Houston; Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Japan (T.I.); Institute of Biosciences and Technology, Texas A&M University, Houston (M.L., Y.H.); and Department of Physiology, The Second Military Medical School, Shanghai, China (X.N.)
| | - Yujin Zhang
- From the Xiangya Hospital, Central South University, Changsha, China (A.H., Z.P., L.T., Y.X.); Department of Biochemistry and Molecular Biology, McGovern Medical School (A.H., H.W., T.I., Y.Z., K.S., A.S., H.L., Z.P., R.E.K., Y.X.) and Graduate School of Biomedical Sciences (K.S., H.L., R.E.K., Y.X.), University of Texas at Houston; Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Japan (T.I.); Institute of Biosciences and Technology, Texas A&M University, Houston (M.L., Y.H.); and Department of Physiology, The Second Military Medical School, Shanghai, China (X.N.)
| | - Kaiqi Sun
- From the Xiangya Hospital, Central South University, Changsha, China (A.H., Z.P., L.T., Y.X.); Department of Biochemistry and Molecular Biology, McGovern Medical School (A.H., H.W., T.I., Y.Z., K.S., A.S., H.L., Z.P., R.E.K., Y.X.) and Graduate School of Biomedical Sciences (K.S., H.L., R.E.K., Y.X.), University of Texas at Houston; Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Japan (T.I.); Institute of Biosciences and Technology, Texas A&M University, Houston (M.L., Y.H.); and Department of Physiology, The Second Military Medical School, Shanghai, China (X.N.)
| | - Anren Song
- From the Xiangya Hospital, Central South University, Changsha, China (A.H., Z.P., L.T., Y.X.); Department of Biochemistry and Molecular Biology, McGovern Medical School (A.H., H.W., T.I., Y.Z., K.S., A.S., H.L., Z.P., R.E.K., Y.X.) and Graduate School of Biomedical Sciences (K.S., H.L., R.E.K., Y.X.), University of Texas at Houston; Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Japan (T.I.); Institute of Biosciences and Technology, Texas A&M University, Houston (M.L., Y.H.); and Department of Physiology, The Second Military Medical School, Shanghai, China (X.N.)
| | - Hong Liu
- From the Xiangya Hospital, Central South University, Changsha, China (A.H., Z.P., L.T., Y.X.); Department of Biochemistry and Molecular Biology, McGovern Medical School (A.H., H.W., T.I., Y.Z., K.S., A.S., H.L., Z.P., R.E.K., Y.X.) and Graduate School of Biomedical Sciences (K.S., H.L., R.E.K., Y.X.), University of Texas at Houston; Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Japan (T.I.); Institute of Biosciences and Technology, Texas A&M University, Houston (M.L., Y.H.); and Department of Physiology, The Second Military Medical School, Shanghai, China (X.N.)
| | - Zhangzhe Peng
- From the Xiangya Hospital, Central South University, Changsha, China (A.H., Z.P., L.T., Y.X.); Department of Biochemistry and Molecular Biology, McGovern Medical School (A.H., H.W., T.I., Y.Z., K.S., A.S., H.L., Z.P., R.E.K., Y.X.) and Graduate School of Biomedical Sciences (K.S., H.L., R.E.K., Y.X.), University of Texas at Houston; Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Japan (T.I.); Institute of Biosciences and Technology, Texas A&M University, Houston (M.L., Y.H.); and Department of Physiology, The Second Military Medical School, Shanghai, China (X.N.)
| | - Lili Tang
- From the Xiangya Hospital, Central South University, Changsha, China (A.H., Z.P., L.T., Y.X.); Department of Biochemistry and Molecular Biology, McGovern Medical School (A.H., H.W., T.I., Y.Z., K.S., A.S., H.L., Z.P., R.E.K., Y.X.) and Graduate School of Biomedical Sciences (K.S., H.L., R.E.K., Y.X.), University of Texas at Houston; Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Japan (T.I.); Institute of Biosciences and Technology, Texas A&M University, Houston (M.L., Y.H.); and Department of Physiology, The Second Military Medical School, Shanghai, China (X.N.)
| | - Minjung Lee
- From the Xiangya Hospital, Central South University, Changsha, China (A.H., Z.P., L.T., Y.X.); Department of Biochemistry and Molecular Biology, McGovern Medical School (A.H., H.W., T.I., Y.Z., K.S., A.S., H.L., Z.P., R.E.K., Y.X.) and Graduate School of Biomedical Sciences (K.S., H.L., R.E.K., Y.X.), University of Texas at Houston; Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Japan (T.I.); Institute of Biosciences and Technology, Texas A&M University, Houston (M.L., Y.H.); and Department of Physiology, The Second Military Medical School, Shanghai, China (X.N.)
| | - Yun Huang
- From the Xiangya Hospital, Central South University, Changsha, China (A.H., Z.P., L.T., Y.X.); Department of Biochemistry and Molecular Biology, McGovern Medical School (A.H., H.W., T.I., Y.Z., K.S., A.S., H.L., Z.P., R.E.K., Y.X.) and Graduate School of Biomedical Sciences (K.S., H.L., R.E.K., Y.X.), University of Texas at Houston; Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Japan (T.I.); Institute of Biosciences and Technology, Texas A&M University, Houston (M.L., Y.H.); and Department of Physiology, The Second Military Medical School, Shanghai, China (X.N.)
| | - Xin Ni
- From the Xiangya Hospital, Central South University, Changsha, China (A.H., Z.P., L.T., Y.X.); Department of Biochemistry and Molecular Biology, McGovern Medical School (A.H., H.W., T.I., Y.Z., K.S., A.S., H.L., Z.P., R.E.K., Y.X.) and Graduate School of Biomedical Sciences (K.S., H.L., R.E.K., Y.X.), University of Texas at Houston; Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Japan (T.I.); Institute of Biosciences and Technology, Texas A&M University, Houston (M.L., Y.H.); and Department of Physiology, The Second Military Medical School, Shanghai, China (X.N.)
| | - Rodney E Kellems
- From the Xiangya Hospital, Central South University, Changsha, China (A.H., Z.P., L.T., Y.X.); Department of Biochemistry and Molecular Biology, McGovern Medical School (A.H., H.W., T.I., Y.Z., K.S., A.S., H.L., Z.P., R.E.K., Y.X.) and Graduate School of Biomedical Sciences (K.S., H.L., R.E.K., Y.X.), University of Texas at Houston; Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Japan (T.I.); Institute of Biosciences and Technology, Texas A&M University, Houston (M.L., Y.H.); and Department of Physiology, The Second Military Medical School, Shanghai, China (X.N.)
| | - Yang Xia
- From the Xiangya Hospital, Central South University, Changsha, China (A.H., Z.P., L.T., Y.X.); Department of Biochemistry and Molecular Biology, McGovern Medical School (A.H., H.W., T.I., Y.Z., K.S., A.S., H.L., Z.P., R.E.K., Y.X.) and Graduate School of Biomedical Sciences (K.S., H.L., R.E.K., Y.X.), University of Texas at Houston; Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Japan (T.I.); Institute of Biosciences and Technology, Texas A&M University, Houston (M.L., Y.H.); and Department of Physiology, The Second Military Medical School, Shanghai, China (X.N.).
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Pauwels S, Duca RC, Devlieger R, Freson K, Straetmans D, Van Herck E, Huybrechts I, Koppen G, Godderis L. Maternal Methyl-Group Donor Intake and Global DNA (Hydroxy)Methylation before and during Pregnancy. Nutrients 2016; 8:E474. [PMID: 27509522 PMCID: PMC4997387 DOI: 10.3390/nu8080474] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 07/14/2016] [Accepted: 07/21/2016] [Indexed: 01/01/2023] Open
Abstract
It is still unclear to which extent methyl-group intake during pregnancy can affect maternal global DNA (hydroxyl)methylation. Pregnancy methylation profiling and its link with methyl-group intake in a healthy population could enhance our understanding of the development of pregnancy related disorders. One hundred forty-eight women were enrolled in the MANOE (MAternal Nutrition and Offspring's Epigenome) study. Thiry-four women were enrolled before pregnancy and 116 during the first trimester of pregnancy. Global DNA (hydroxy)methylation in blood using LC-MS/MS and dietary methyl-group intake (methionine, folate, betaine, and choline) using a food-frequency questionnaire were estimated pre-pregnancy, during each trimester, and at delivery. Global DNA (hydroxy)methylation levels were highest pre-pregnancy and at weeks 18-22 of pregnancy. We observed a positive relation between folic acid and global DNA methylation (p = 0.04) and hydroxymethylation (p = 0.04). A high intake of methionine pre-pregnancy and in the first trimester showed lower (hydroxy)methylation percentage in weeks 11-13 and weeks 18-22, respectively. Choline and betaine intake in the first weeks was negatively associated with hydroxymethylation. Women with a high intake of these three methyl groups in the second and third trimester showed higher hyrdoxymethylation/methylation levels in the third trimester. To conclude, a time trend in DNA (hydroxy)methylation was found and women with higher methyl-group intake showed higher methylation in the third trimester, and not in earlier phases of pregnancy.
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Affiliation(s)
- Sara Pauwels
- KU Leuven, Department of Public Health and Primary Care, Environment and Health, Kapucijnenvoer 35 blok D box 7001, 3000 Leuven, Belgium.
- Flemish Institute of Technological Research (VITO), Unit Environmental Risk and Health, Boeretang 200, 2400 Mol, Belgium.
| | - Radu Corneliu Duca
- KU Leuven, Department of Public Health and Primary Care, Environment and Health, Kapucijnenvoer 35 blok D box 7001, 3000 Leuven, Belgium.
| | - Roland Devlieger
- KU Leuven, Department of Development and Regeneration, 3000 Leuven, Belgium.
- Department of Obstetrics and Gynecology, University Hospitals of Leuven, 3000 Leuven, Belgium.
| | - Kathleen Freson
- KU Leuven, Center for Molecular and Vascular Biology, UZ Herestraat 49-box 911, 3000 Leuven, Belgium.
| | - Dany Straetmans
- AML Laboratory, Department of Endocrinology, 2000 Antwerp, Belgium.
| | - Erik Van Herck
- KU Leuven, Unit Clinical and Experimental Endocrinology, UZ Herestraat 49, 3000 Leuven, Belgium.
| | - Inge Huybrechts
- International Agency for Research on Cancer, Dietary Exposure Assessment Group, 150 Cours Albert Thomas, 69372 Lyon CEDEX 08, France.
| | - Gurdun Koppen
- Flemish Institute of Technological Research (VITO), Unit Environmental Risk and Health, Boeretang 200, 2400 Mol, Belgium.
| | - Lode Godderis
- KU Leuven, Department of Public Health and Primary Care, Environment and Health, Kapucijnenvoer 35 blok D box 7001, 3000 Leuven, Belgium.
- IDEWE, External Service for Prevention and Protection at Work, Interleuvenlaan 58, 3001 Heverlee, Belgium.
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Suzuki M, Maekawa R, Patterson NE, Reynolds DM, Calder BR, Reznik SE, Heo HJ, Einstein FH, Greally JM. Amnion as a surrogate tissue reporter of the effects of maternal preeclampsia on the fetus. Clin Epigenetics 2016; 8:67. [PMID: 27293492 PMCID: PMC4902972 DOI: 10.1186/s13148-016-0234-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 06/02/2016] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Preeclampsia, traditionally characterized by high blood pressure and proteinuria, is a common pregnancy complication, which affects 2-8 % of all pregnancies. Although children born to women with preeclampsia have a higher risk of hypertension in later life, the mechanism of this increased risk is unknown. DNA methylation is an epigenetic modification that has been studied as a mediator of cellular memory of adverse exposures in utero. Since each cell type in the body has a unique DNA profile, cell subtype composition is a major confounding factor in studies of tissues with heterogeneous cell types. The best way to avoid this confounding effect is by using purified cell types. However, using purified cell types in large cohort translational studies is difficult. The amnion, the inner layer of the fetal membranes of the placenta, is derived from the epiblast and consists of two cell types, which are easy to isolate from the delivered placenta. In this study, we demonstrate the value of using amnion samples for DNA methylation studies, revealing distinctive patterns between fetuses exposed to proteinuria or hypertension and fetuses from normal pregnancies. RESULTS We performed a genome-wide DNA methylation analysis, HpaII tiny fragment Enrichment by Ligation-mediated PCR (HELP)-tagging, on 62 amnion samples from the placentas of uncomplicated, normal pregnancies and from those with complications of preeclampsia or hypertension. Using a regression model approach, we found 123, 85, and 99 loci with high-confidence hypertension-associated, proteinuria-associated, and hypertension- and proteinuria-associated DNA methylation changes, respectively. A gene ontology analysis showed DNA methylation changes to be selecting genes with different biological processes in exposure status. We also found that these differentially methylated regions overlap loci previously reported as differentially methylated regions in preeclampsia. CONCLUSIONS Our findings support prior observations that preeclampsia is associated with changes of DNA methylation near genes that have previously been found to be dysregulated in preeclampsia. We propose that amniotic membranes represent a valuable surrogate fetal tissue on which to perform epigenome-wide association studies of adverse intrauterine conditions.
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Affiliation(s)
- Masako Suzuki
- />Center for Epigenomics, Department of Genetics, Albert Einstein College of Medicine, 1301 Morris Park Avenue, Bronx, NY 10461 USA
| | - Ryo Maekawa
- />Center for Epigenomics, Department of Genetics, Albert Einstein College of Medicine, 1301 Morris Park Avenue, Bronx, NY 10461 USA
- />Department of Obstetrics and Gynecology, Yamaguchi University Graduate School of Medicine, Minamikogushi 1-1-1, Ube, 755-8505 Japan
| | - Nicole E. Patterson
- />Center for Epigenomics, Department of Genetics, Albert Einstein College of Medicine, 1301 Morris Park Avenue, Bronx, NY 10461 USA
| | - David M. Reynolds
- />Center for Epigenomics, Department of Genetics, Albert Einstein College of Medicine, 1301 Morris Park Avenue, Bronx, NY 10461 USA
| | - Brent R. Calder
- />Center for Epigenomics, Department of Genetics, Albert Einstein College of Medicine, 1301 Morris Park Avenue, Bronx, NY 10461 USA
| | - Sandra E. Reznik
- />Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John’s University, Jamaica, NY 11439 USA
- />Department of Pathology, Albert Einstein College of Medicine, Bronx, NY 10461 USA
- />Department of Obstetrics and Gynecology and Women’s Health, Albert Einstein College of Medicine, 1301 Morris Park Avenue, Price 322, Bronx, NY 10461 USA
| | - Hye J. Heo
- />Department of Obstetrics and Gynecology and Women’s Health, Albert Einstein College of Medicine, 1301 Morris Park Avenue, Price 322, Bronx, NY 10461 USA
| | - Francine Hughes Einstein
- />Department of Obstetrics and Gynecology and Women’s Health, Albert Einstein College of Medicine, 1301 Morris Park Avenue, Price 322, Bronx, NY 10461 USA
| | - John M. Greally
- />Center for Epigenomics, Department of Genetics, Albert Einstein College of Medicine, 1301 Morris Park Avenue, Bronx, NY 10461 USA
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Knight AK, Smith AK. Epigenetic Biomarkers of Preterm Birth and Its Risk Factors. Genes (Basel) 2016; 7:E15. [PMID: 27089367 PMCID: PMC4846845 DOI: 10.3390/genes7040015] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Revised: 03/28/2016] [Accepted: 04/08/2016] [Indexed: 01/21/2023] Open
Abstract
A biomarker is a biological measure predictive of a normal or pathogenic process or response. Biomarkers are often useful for making clinical decisions and determining treatment course. One area where such biomarkers would be particularly useful is in identifying women at risk for preterm delivery and related pregnancy complications. Neonates born preterm have significant morbidity and mortality, both in the perinatal period and throughout the life course, and identifying women at risk of delivering preterm may allow for targeted interventions to prevent or delay preterm birth (PTB). In addition to identifying those at increased risk for preterm birth, biomarkers may be able to distinguish neonates at particular risk for future complications due to modifiable environmental factors, such as maternal smoking or alcohol use during pregnancy. Currently, there are no such biomarkers available, though candidate gene and epigenome-wide association studies have identified DNA methylation differences associated with PTB, its risk factors and its long-term outcomes. Further biomarker development is crucial to reducing the health burden associated with adverse intrauterine conditions and preterm birth, and the results of recent DNA methylation studies may advance that goal.
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Affiliation(s)
- Anna K Knight
- Genetics and Molecular Biology Program, Emory University, Atlanta, GA 30322, USA.
| | - Alicia K Smith
- Genetics and Molecular Biology Program, Emory University, Atlanta, GA 30322, USA.
- Department of Psychiatry & Behavioral Sciences, Emory University School of Medicine, Atlanta, GA 30322, USA.
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White WM, Sun Z, Borowski KS, Brost BC, Davies NP, Rose CH, Garovic VD. Preeclampsia/Eclampsia candidate genes show altered methylation in maternal leukocytes of preeclamptic women at the time of delivery. Hypertens Pregnancy 2016; 35:394-404. [PMID: 27064514 DOI: 10.3109/10641955.2016.1162315] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To analyze methylation profiles of known preeclampsia/eclampsia (PE) candidate genes in normal (NL) and preeclamptic (PE) women at delivery. METHODS A matched case-control study comparing methylation in 79 CpG sites/33 genes from an independent gene set in maternal leukocyte DNA in PE and NL (n = 14 each) on an Illumina BeadChip platform. Replication performed on second cohort (PE = 12; NL = 32). RESULTS PE demonstrates differential methylation in POMC, AGT, CALCA, and DDAH1 compared with NL. CONCLUSION Differential methylation in four genes associated with PE may represent a potential biomarker or an epigenetic pathophysiologic mechanism altering gene transcription.
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Affiliation(s)
- Wendy M White
- a Department of Obstetrics and Gynecology , Division of Maternal Fetal Medicine , Mayo Clinic, Rochester , MN , USA
| | - Zhifu Sun
- b Department of Health Sciences Research , Division of Biomedical Statistics and Informatics , Mayo Clinic, Rochester , MN , USA
| | - Kristi S Borowski
- a Department of Obstetrics and Gynecology , Division of Maternal Fetal Medicine , Mayo Clinic, Rochester , MN , USA
| | - Brian C Brost
- a Department of Obstetrics and Gynecology , Division of Maternal Fetal Medicine , Mayo Clinic, Rochester , MN , USA
| | - Norman P Davies
- a Department of Obstetrics and Gynecology , Division of Maternal Fetal Medicine , Mayo Clinic, Rochester , MN , USA
| | - Carl H Rose
- a Department of Obstetrics and Gynecology , Division of Maternal Fetal Medicine , Mayo Clinic, Rochester , MN , USA
| | - Vesna D Garovic
- c Department of Internal Medicine , Division of Nephrology and Hypertension , Mayo Clinic, Rochester , MN , USA
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Thiele DK, Anderson CM. Developmental Origins of Health and Disease: A Challenge for Nurses. J Pediatr Nurs 2016; 31:42-6. [PMID: 26651232 DOI: 10.1016/j.pedn.2015.10.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 10/29/2015] [Accepted: 10/29/2015] [Indexed: 02/06/2023]
Abstract
Prevention of disease is a cornerstone of nursing care. Through our endeavors in research, teaching, and clinical care, nurses consistently seek to change the trajectory of disease development. The theoretical framework known as the Developmental Origins of Health and Disease (DOHaD) offers a new lens that shifts the current disease prevention paradigm upstream, encouraging intensified care of pregnant girls/women, neonates, and infants. This new focus parallels other emerging ecobiodevelopmental, life-course theories, which identify the long-term impact of early environments and stressors on the later risk of chronic adult diseases. Nurses have the potential to influence the health of multiple generations by incorporating DOHaD perspectives and interventions into their research and patient care.
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Singh MD, Thomas P, Owens J, Hague W, Fenech M. Potential role of folate in pre-eclampsia. Nutr Rev 2015; 73:694-722. [PMID: 26359215 DOI: 10.1093/nutrit/nuv028] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Dietary deficiencies of folate and other B vitamin cofactors involved in one-carbon metabolism, together with genetic polymorphisms in key folate-methionine metabolic pathway enzymes, are associated with increases in circulating plasma homocysteine, reduction in DNA methylation patterns, and genome instability events. All of these biomarkers have also been associated with pre-eclampsia. The aim of this review was to explore the literature and identify potential knowledge gaps in relation to the role of folate at the genomic level in either the etiology or the prevention of pre-eclampsia. A systematic search strategy was designed to identify citations in electronic databases for the following terms: folic acid supplementation AND pre-eclampsia, folic acid supplementation AND genome stability, folate AND genome stability AND pre-eclampsia, folic acid supplementation AND DNA methylation, and folate AND DNA methylation AND pre-eclampsia. Forty-three articles were selected according to predefined selection criteria. The studies included in the present review were not homogeneous, which made pooled analysis of the data very difficult. The present review highlights associations between folate deficiency and certain biomarkers observed in various tissues of women at risk of pre-eclampsia. Further investigation is required to understand the role of folate in either the etiology or the prevention of pre-eclampsia.
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Affiliation(s)
- Mansi Dass Singh
- M.D. Singh, J. Owens, and W. Hague are with the School of Pediatrics and Reproductive Health, Discipline of Obstetrics and Gynecology, Faculty of Health Sciences, Robinson Institute, Australian Research Centre for Health of Women and Babies, The University of Adelaide, Adelaide, South Australia, Australia. M.D. Singh, P. Thomas and M. Fenech are with the Genome Health and Personalized Nutrition Laboratory Commonwealth Scientific and Industrial Research Organization (CSIRO), Food and Nutrition Flagship, Adelaide, South Australia, Australia
| | - Philip Thomas
- M.D. Singh, J. Owens, and W. Hague are with the School of Pediatrics and Reproductive Health, Discipline of Obstetrics and Gynecology, Faculty of Health Sciences, Robinson Institute, Australian Research Centre for Health of Women and Babies, The University of Adelaide, Adelaide, South Australia, Australia. M.D. Singh, P. Thomas and M. Fenech are with the Genome Health and Personalized Nutrition Laboratory Commonwealth Scientific and Industrial Research Organization (CSIRO), Food and Nutrition Flagship, Adelaide, South Australia, Australia
| | - Julie Owens
- M.D. Singh, J. Owens, and W. Hague are with the School of Pediatrics and Reproductive Health, Discipline of Obstetrics and Gynecology, Faculty of Health Sciences, Robinson Institute, Australian Research Centre for Health of Women and Babies, The University of Adelaide, Adelaide, South Australia, Australia. M.D. Singh, P. Thomas and M. Fenech are with the Genome Health and Personalized Nutrition Laboratory Commonwealth Scientific and Industrial Research Organization (CSIRO), Food and Nutrition Flagship, Adelaide, South Australia, Australia
| | - William Hague
- M.D. Singh, J. Owens, and W. Hague are with the School of Pediatrics and Reproductive Health, Discipline of Obstetrics and Gynecology, Faculty of Health Sciences, Robinson Institute, Australian Research Centre for Health of Women and Babies, The University of Adelaide, Adelaide, South Australia, Australia. M.D. Singh, P. Thomas and M. Fenech are with the Genome Health and Personalized Nutrition Laboratory Commonwealth Scientific and Industrial Research Organization (CSIRO), Food and Nutrition Flagship, Adelaide, South Australia, Australia
| | - Michael Fenech
- M.D. Singh, J. Owens, and W. Hague are with the School of Pediatrics and Reproductive Health, Discipline of Obstetrics and Gynecology, Faculty of Health Sciences, Robinson Institute, Australian Research Centre for Health of Women and Babies, The University of Adelaide, Adelaide, South Australia, Australia. M.D. Singh, P. Thomas and M. Fenech are with the Genome Health and Personalized Nutrition Laboratory Commonwealth Scientific and Industrial Research Organization (CSIRO), Food and Nutrition Flagship, Adelaide, South Australia, Australia.
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Devall M, Mill J, Lunnon K. The mitochondrial epigenome: a role in Alzheimer's disease? Epigenomics 2015; 6:665-75. [PMID: 25531259 DOI: 10.2217/epi.14.50] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Considerable evidence suggests that mitochondrial dysfunction occurs early in Alzheimer's disease, both in affected brain regions and in leukocytes, potentially precipitating neurodegeneration through increased oxidative stress. Epigenetic processes are emerging as a dynamic mechanism through which environmental signals may contribute to cellular changes, leading to neuropathology and disease. Until recently, little attention was given to the mitochondrial epigenome itself, as preliminary studies indicated an absence of DNA modifications. However, recent research has demonstrated that epigenetic changes to the mitochondrial genome do occur, potentially playing an important role in several disorders characterized by mitochondrial dysfunction. This review explores the potential role of mitochondrial epigenetic dysfunction in Alzheimer's disease etiology and discusses some technical issues pertinent to the study of these processes.
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Affiliation(s)
- Matthew Devall
- University of Exeter Medical School, RILD Level 4, Barrack Road, Exeter, Devon, UK
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38
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Wright ML, Ralph JL, Korniewicz DM. DNA Methylation Patterns in Peripheral Blood of Pregnant Women With Group B Streptococcus Colonization. Biol Res Nurs 2015; 17:438-43. [PMID: 25964656 DOI: 10.1177/1099800415584996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The primary risk factor for neonatal Group B streptococcus (GBS) infection, which is the leading cause of infectious neonatal morbidity and mortality, is maternal colonization. However, no definitive maternal risk factors for GBS colonization have been identified and no systematic efforts have been made to prevent maternal colonization. The purpose of this exploratory secondary analysis was to evaluate genome-wide DNA methylation patterns in maternal peripheral blood early in pregnancy for association with GBS colonization status in the third trimester. Genome-wide DNA methylation was analyzed from 18 nulliparous GBS-positive and -negative women (n = 9/group) recruited for a previous study. No statistically significant differences in baseline characteristics or DNA methylation in peripheral blood were identified between GBS-positive and -negative women in early pregnancy. The results suggest that DNA methylation patterns in peripheral blood are not associated with risk for GBS colonization.
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Affiliation(s)
- Michelle L Wright
- School of Nursing, Virginia Commonwealth University, Richmond, VA, USA
| | - Jody L Ralph
- University of North Dakota, Grand Forks, ND, USA
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Abstract
Hypertensive disease of pregnancy (HDP) has been associated with elevated lifetime cardiovascular risk, including stroke, myocardial disease, coronary artery disease, and peripheral arterial disease. These two entities share common risk factors such as obesity, insulin resistance, diabetes, and hypertension. This article will evaluate the current literature on the maternal and fetal cardiovascular risks posed by HDP. The landmark study by Barker et al. demonstrated increased cardiovascular risk in growth-restricted infants, which may also be associated with HDP. Research has demonstrated the effects that HDP may have on the vascular and nephron development in offspring, particularly with respect to endothelial and inflammatory markers. In order to control for confounding variables and better understand the relationship between HDP and lifetime cardiovascular risk, future research will require following blood pressure and metabolic profiles of the parturients and their offspring.
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40
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Ching T, Ha J, Song MA, Tiirikainen M, Molnar J, Berry MJ, Towner D, Garmire LX. Genome-scale hypomethylation in the cord blood DNAs associated with early onset preeclampsia. Clin Epigenetics 2015; 7:21. [PMID: 25806090 PMCID: PMC4371797 DOI: 10.1186/s13148-015-0052-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 02/05/2015] [Indexed: 12/23/2022] Open
Abstract
Background Preeclampsia is one of the leading causes of fetal and maternal morbidity and mortality worldwide. Preterm babies of mothers with early onset preeclampsia (EOPE) are at higher risks for various diseases later on in life, including cardiovascular diseases. We hypothesized that genome-wide epigenetic alterations occur in cord blood DNAs in association with EOPE and conducted a case control study to compare the genome-scale methylome differences in cord blood DNAs between 12 EOPE-associated and 8 normal births. Results Bioinformatics analysis of methylation data from the Infinium HumanMethylation450 BeadChip shows a genome-scale hypomethylation pattern in EOPE, with 51,486 hypomethylated CpG sites and 12,563 hypermethylated sites (adjusted P <0.05). A similar trend also exists in the proximal promoters (TSS200) associated with protein-coding genes. Using summary statistics on the CpG sites in TSS200 regions, promoters of 643 and 389 genes are hypomethylated and hypermethylated, respectively. Promoter-based differential methylation (DM) analysis reveals that genes in the farnesoid X receptor and liver X receptor (FXR/LXR) pathway are enriched, indicating dysfunction of lipid metabolism in cord blood cells. Additional biological functional alterations involve inflammation, cell growth, and hematological system development. A two-way ANOVA analysis among coupled cord blood and amniotic membrane samples shows that a group of genes involved in inflammation, lipid metabolism, and proliferation are persistently differentially methylated in both tissues, including IL12B, FAS, PIK31, and IGF1. Conclusions These findings provide, for the first time, evidence of prominent genome-scale DNA methylation modifications in cord blood DNAs associated with EOPE. They may suggest a connection between inflammation and lipid dysregulation in EOPE-associated newborns and a higher risk of cardiovascular diseases later in adulthood. Electronic supplementary material The online version of this article (doi:10.1186/s13148-015-0052-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Travers Ching
- Molecular Bioscience and Bioengineering Graduate Program, University of Hawaii at Manoa, Honolulu, HI 96822 USA.,Epidemiology Program, University of Hawaii Cancer Center, Honolulu, HI 96813 USA
| | - James Ha
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91126 USA
| | - Min-Ae Song
- Epidemiology Department, The Ohio State University, The College of Public Health, Columbus, OH 43210 USA.,University of Hawaii Cancer Center, The Ohio State University and James Cancer Hospital, Columbus, OH 43210 USA.,Genomics Shared Resources, University of Hawaii Cancer Center, Honolulu, HI 96813 USA
| | - Maarit Tiirikainen
- Molecular Bioscience and Bioengineering Graduate Program, University of Hawaii at Manoa, Honolulu, HI 96822 USA.,Genomics Shared Resources, University of Hawaii Cancer Center, Honolulu, HI 96813 USA
| | - Janos Molnar
- Genomics Shared Resources, University of Hawaii Cancer Center, Honolulu, HI 96813 USA
| | - Marla J Berry
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI 96813 USA
| | - Dena Towner
- Department of Obstetrics, Gynecology and Women's Health, John A. Burns School of Medicine, University of Hawaii, Honolulu, HI 96826 USA
| | - Lana X Garmire
- Molecular Bioscience and Bioengineering Graduate Program, University of Hawaii at Manoa, Honolulu, HI 96822 USA.,Epidemiology Program, University of Hawaii Cancer Center, Honolulu, HI 96813 USA
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Smolkova B, El Yamani N, Collins AR, Gutleb AC, Dusinska M. Nanoparticles in food. Epigenetic changes induced by nanomaterials and possible impact on health. Food Chem Toxicol 2014; 77:64-73. [PMID: 25554528 DOI: 10.1016/j.fct.2014.12.015] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2014] [Revised: 12/17/2014] [Accepted: 12/18/2014] [Indexed: 12/17/2022]
Abstract
Disturbed epigenetic mechanisms, which developmentally regulate gene expression via modifications to DNA, histone proteins, and chromatin, have been hypothesized to play a key role in many human diseases. Recently it was shown that engineered nanoparticles (NPs), that already have a wide range of applications in various fields including food production, could dramatically affect epigenetic processes, while their ability to induce diseases remains poorly understood. Besides the obvious benefits of the new technologies, it is critical to assess their health effects before proceeding with industrial production. In this article, after surveying the applications of NPs in food technology, we review recent advances in the understanding of epigenetic pathological effects of NPs, and discuss their possible health impact with the aim of avoiding potential health risks posed by the use of nanomaterials in foods and food-packaging.
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Affiliation(s)
- Bozena Smolkova
- Department of Genetics, Cancer Research Institute of Slovak Academy of Sciences, Bratislava, Slovakia
| | - Naouale El Yamani
- Health Effects Laboratory, Department of Environmental Chemistry (MILK), NILU- Norwegian Institute for Air Research, 2027 Kjeller, Norway; Department of Nutrition, University of Oslo, Oslo, Norway
| | | | - Arno C Gutleb
- Environmental Research and Innovation Department, Luxembourg Institute of Science and Technology (LIST), Luxembourg, Luxembourg
| | - Maria Dusinska
- Health Effects Laboratory, Department of Environmental Chemistry (MILK), NILU- Norwegian Institute for Air Research, 2027 Kjeller, Norway.
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