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Mackay DJG, Gazdagh G, Monk D, Brioude F, Giabicani E, Krzyzewska IM, Kalish JM, Maas SM, Kagami M, Beygo J, Kahre T, Tenorio-Castano J, Ambrozaitytė L, Burnytė B, Cerrato F, Davies JH, Ferrero GB, Fjodorova O, Manero-Azua A, Pereda A, Russo S, Tannorella P, Temple KI, Õunap K, Riccio A, de Nanclares GP, Maher ER, Lapunzina P, Netchine I, Eggermann T, Bliek J, Tümer Z. Multi-locus imprinting disturbance (MLID): interim joint statement for clinical and molecular diagnosis. Clin Epigenetics 2024; 16:99. [PMID: 39090763 PMCID: PMC11295890 DOI: 10.1186/s13148-024-01713-y] [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: 04/25/2024] [Accepted: 07/24/2024] [Indexed: 08/04/2024] Open
Abstract
BACKGROUND Imprinting disorders are rare diseases resulting from altered expression of imprinted genes, which exhibit parent-of-origin-specific expression patterns regulated through differential DNA methylation. A subgroup of patients with imprinting disorders have DNA methylation changes at multiple imprinted loci, a condition referred to as multi-locus imprinting disturbance (MLID). MLID is recognised in most but not all imprinting disorders and is also found in individuals with atypical clinical features; the presence of MLID often alters the management or prognosis of the affected person. Some cases of MLID are caused by trans-acting genetic variants, frequently not in the patients but their mothers, which have counselling implications. There is currently no consensus on the definition of MLID, clinical indications prompting testing, molecular procedures and methods for epigenetic and genetic diagnosis, recommendations for laboratory reporting, considerations for counselling, and implications for prognosis and management. The purpose of this study is thus to cover this unmet need. METHODS A comprehensive literature search was conducted resulting in identification of more than 100 articles which formed the basis of discussions by two working groups focusing on clinical diagnosis (n = 12 members) and molecular testing (n = 19 members). Following eight months of preparations and regular online discussions, the experts from 11 countries compiled the preliminary documentation and determined the questions to be addressed during a face-to-face meeting which was held with the attendance of the experts together with four representatives of patient advocacy organisations. RESULTS In light of available evidence and expert consensus, we formulated 16 propositions and 8 recommendations as interim guidance for the clinical and molecular diagnosis of MLID. CONCLUSIONS MLID is a molecular designation, and for patients with MLID and atypical phenotypes, we propose the alternative term multi-locus imprinting syndrome. Due to the intrinsic variability of MLID, the guidelines underscore the importance of involving experts from various fields to ensure a confident approach to diagnosis, counselling, and care. The authors advocate for global, collaborative efforts in both basic and translational research to tackle numerous crucial questions that currently lack answers, and suggest reconvening within the next 3-5 years to evaluate the research advancements and update this guidance as needed.
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Affiliation(s)
| | - Gabriella Gazdagh
- Faculty of Medicine, University of Southampton, Southampton, UK
- Wessex Clinical Genetics Service, Princess Anne Hospital, University Hospital Southampton NHS Trust, Southampton, UK
| | - David Monk
- Biomedical Research Centre, School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich, UK
| | - Frederic Brioude
- Centre de Recherche Saint Antoine, Endocrinologie Moléculaire et Pathologies d'empreinte, INSERMSorbonne Université, Hôpital Armand TrousseauAPHP, 75012, Paris, France
| | - Eloise Giabicani
- Centre de Recherche Saint Antoine, Endocrinologie Moléculaire et Pathologies d'empreinte, INSERMSorbonne Université, Hôpital Armand TrousseauAPHP, 75012, Paris, France
| | - Izabela M Krzyzewska
- Department of Human Genetics, Amsterdam Reproduction and Development Research Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Jennifer M Kalish
- Division of Human Genetics and Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, PA, 19104, USA
- Departments of Pediatrics and Genetics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Saskia M Maas
- Department of Human Genetics, Amsterdam Reproduction and Development Research Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Masayo Kagami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Jasmin Beygo
- Institut Für Humangenetik, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Germany
| | - Tiina Kahre
- Department of Laboratory Genetics, Genetics and Personalized Medicine Clinic, Tartu University Hospital, Tartu, Estonia
- Department of Clinical Genetics, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
| | - Jair Tenorio-Castano
- CIBERER, Centro de Investigación Biomédica en Red de Enfermedades Raras, Madrid, Spain
- Institute of Medical and Molecular Genetics, INGEMM-Idipaz, Madrid, Spain
| | - Laima Ambrozaitytė
- Department of Human and Medical Genetics, Institute of Biomedical Sciences, Faculty of Medicine, Vilnius University, Vilnius, Lithuania
| | - Birutė Burnytė
- Department of Human and Medical Genetics, Institute of Biomedical Sciences, Faculty of Medicine, Vilnius University, Vilnius, Lithuania
| | - Flavia Cerrato
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), Università Degli Studi Della Campania "Luigi Vanvitelli", Caserta, Italy
| | - Justin H Davies
- Faculty of Medicine, University of Southampton, Southampton, UK
- Regional Centre for Paediatric Endocrinology, Faculty of Medicine, Southampton Children's Hospital, University of Southampton, Southampton, UK
| | - Giovanni Battista Ferrero
- Department of Clinical and Biological Science, School of Medicine, Centre for Hemoglobinopathies, AOU San Luigi Gonzaga, University of Turin, Turin, Italy
| | - Olga Fjodorova
- Department of Laboratory Genetics, Genetics and Personalized Medicine Clinic, Tartu University Hospital, Tartu, Estonia
| | - Africa Manero-Azua
- Rare Diseases Research Group, Molecular (Epi)Genetics Laboratory, Bioaraba Health Research Institute, Araba University Hospital-Txagorritxu, Vitoria-Gasteiz, Araba, Spain
| | - Arrate Pereda
- Rare Diseases Research Group, Molecular (Epi)Genetics Laboratory, Bioaraba Health Research Institute, Araba University Hospital-Txagorritxu, Vitoria-Gasteiz, Araba, Spain
| | - Silvia Russo
- IRCCS Research Laboratory of Medical Cytogenetics and Molecular Genetics, Istituto Auxologico Italiano, Milan, Italy
| | - Pierpaola Tannorella
- IRCCS Research Laboratory of Medical Cytogenetics and Molecular Genetics, Istituto Auxologico Italiano, Milan, Italy
| | - Karen I Temple
- Faculty of Medicine, University of Southampton, Southampton, UK
- Wessex Clinical Genetics Service, Princess Anne Hospital, University Hospital Southampton NHS Trust, Southampton, UK
| | - Katrin Õunap
- Department of Clinical Genetics, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
- Department of Clinical Genetics, Genetics and Personalized Medicine Clinic, Tartu University Hospital, Tartu, Estonia
| | - Andrea Riccio
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), Università Degli Studi Della Campania "Luigi Vanvitelli", Caserta, Italy
- Institute of Genetics and Biophysics (IGB),"Adriano Buzzati-Traverso", Consiglio Nazionale Delle Ricerche (CNR), Naples, Italy
| | - Guiomar Perez de Nanclares
- Rare Diseases Research Group, Molecular (Epi)Genetics Laboratory, Bioaraba Health Research Institute, Araba University Hospital-Txagorritxu, Vitoria-Gasteiz, Araba, Spain
| | - Eamonn R Maher
- Aston Medical School, Aston University, Birmingham, UK
- Department of Medical Genetics, University of Cambridge, Cambridge, UK
| | - Pablo Lapunzina
- CIBERER, Centro de Investigación Biomédica en Red de Enfermedades Raras, Madrid, Spain
- Institute of Medical and Molecular Genetics, INGEMM-Idipaz, Madrid, Spain
| | - Irène Netchine
- Centre de Recherche Saint Antoine, Endocrinologie Moléculaire et Pathologies d'empreinte, INSERMSorbonne Université, Hôpital Armand TrousseauAPHP, 75012, Paris, France
| | - Thomas Eggermann
- Institute for Human Genetics and Genome Medicine. Faculty of Medicine, RWTH University Aachen, Aachen, Germany
| | - Jet Bliek
- Department of Human Genetics, Amsterdam Reproduction and Development Research Institute, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Zeynep Tümer
- Department of Clinical Genetics, Kennedy Center, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Luo QY, Zhang SW, Wu HY, Mo JY, Yu JE, He RK, Jiang ZY, Zhu KJ, Liu XY, Lin ZL, Sheng JZ, Zhang Y, Wu YT, Huang HF. Safety of embryo cryopreservation: insights from mid-term placental transcriptional changes. Reprod Biol Endocrinol 2024; 22:80. [PMID: 38997724 PMCID: PMC11241961 DOI: 10.1186/s12958-024-01241-7] [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: 04/03/2024] [Accepted: 06/04/2024] [Indexed: 07/14/2024] Open
Abstract
BACKGROUND In recent years, with benefits from the continuous improvement of clinical technology and the advantage of fertility preservation, the application of embryo cryopreservation has been growing rapidly worldwide. However, amidst this growth, concerns about its safety persist. Numerous studies have highlighted the elevated risk of perinatal complications linked to frozen embryo transfer (FET), such as large for gestational age (LGA) and hypertensive disorders during pregnancy. Thus, it is imperative to explore the potential risk of embryo cryopreservation and its related mechanisms. METHODS Given the strict ethical constraints on clinical samples, we employed mouse models in this study. Three experimental groups were established: the naturally conceived (NC) group, the fresh embryo transfer (Fresh-ET) group, and the FET group. Blastocyst formation rates and implantation rates were calculated post-embryo cryopreservation. The impact of FET on fetal growth was evaluated upon fetal and placental weight. Placental RNA-seq was conducted, encompassing comprehensive analyses of various comparisons (Fresh-ET vs. NC, FET vs. NC, and FET vs. Fresh-ET). RESULTS Reduced rates of blastocyst formation and implantation were observed post-embryo cryopreservation. Fresh-ET resulted in a significant decrease in fetal weight compared to NC group, whereas FET reversed this decline. RNA-seq analysis indicated that the majority of the expression changes in FET were inherited from Fresh-ET, and alterations solely attributed to embryo cryopreservation were moderate. Unexpectedly, certain genes that showed alterations in Fresh-ET tended to be restored in FET. Further analysis suggested that this regression may underlie the improvement of fetal growth restriction in FET. The expression of imprinted genes was disrupted in both FET and Fresh-ET groups. CONCLUSION Based on our experimental data on mouse models, the impact of embryo cryopreservation is less pronounced than other in vitro manipulations in Fresh-ET. However, the impairment of the embryonic developmental potential and the gene alterations in placenta still suggested it to be a risky operation.
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Affiliation(s)
- Qin-Yu Luo
- Key Laboratory of Reproductive Genetics (Ministry of Education), Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Si-Wei Zhang
- Obstetrics and Gynecology Hospital, Institute of Reproduction and Development, Fudan University, Shanghai, China
| | - Hai-Yan Wu
- Key Laboratory of Reproductive Genetics (Ministry of Education), Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jia-Ying Mo
- International Institutes of Medicine, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, China
| | - Jia-En Yu
- Key Laboratory of Reproductive Genetics (Ministry of Education), Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Ren-Ke He
- International Institutes of Medicine, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, China
| | - Zhao-Ying Jiang
- International Institutes of Medicine, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, China
| | - Ke-Jing Zhu
- International Institutes of Medicine, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, China
| | - Xue-Ying Liu
- International Institutes of Medicine, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, China
| | - Zhong-Liang Lin
- International Institutes of Medicine, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, China
| | - Jian-Zhong Sheng
- Key Laboratory of Reproductive Genetics (Ministry of Education), Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yu Zhang
- Obstetrics and Gynecology Hospital, Institute of Reproduction and Development, Fudan University, Shanghai, China.
- Research Units of Embryo Original Diseases, Chinese Academy of Medical Sciences, Shanghai, (No.2019RU056), China.
- Shanghai Key Laboratory of Reproduction and Development, Shanghai, China.
| | - Yan-Ting Wu
- Obstetrics and Gynecology Hospital, Institute of Reproduction and Development, Fudan University, Shanghai, China.
- Research Units of Embryo Original Diseases, Chinese Academy of Medical Sciences, Shanghai, (No.2019RU056), China.
- Shanghai Key Laboratory of Reproduction and Development, Shanghai, China.
| | - He-Feng Huang
- Key Laboratory of Reproductive Genetics (Ministry of Education), Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, China.
- Obstetrics and Gynecology Hospital, Institute of Reproduction and Development, Fudan University, Shanghai, China.
- International Institutes of Medicine, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, China.
- Research Units of Embryo Original Diseases, Chinese Academy of Medical Sciences, Shanghai, (No.2019RU056), China.
- Shanghai Key Laboratory of Reproduction and Development, Shanghai, China.
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Schaub AM, Gonzalez TL, Dorfman AE, Novoa AG, Hussaini RA, Harakuni PM, Khan MH, Shabani BJ, Swarna A, Wang ET, Chan JL, Williams J, Pisarska MD. A systematic review of genome-wide analyses of methylation changes associated with assisted reproductive technologies in various tissues. Fertil Steril 2024; 121:80-94. [PMID: 37827482 PMCID: PMC11262788 DOI: 10.1016/j.fertnstert.2023.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 09/29/2023] [Accepted: 10/01/2023] [Indexed: 10/14/2023]
Abstract
IMPORTANCE Because analytic technologies improve, increasing amounts of data on methylation differences between assisted reproductive technology (ART) and unassisted conceptions are available. However, various studies use different tissue types and different populations in their analyses, making data comparison and integration difficult. OBJECTIVE To compare and integrate data on genome-wide analyses of methylation differences due to ART, allowing exposure of overarching themes. EVIDENCE REVIEW All studies undertaking genome-wide analysis of human methylation differences due to ART or infertility in any tissue type across the lifespan were assessed for inclusion. FINDINGS Seventeen studies were identified that met the inclusion criteria. One study assessed trophectoderm biopsies, 2 first-trimester placenta, 1 first-trimester fetal tissue, 2 term placenta, 7 cord blood, 3 newborn dried blood spots, 1 childhood buccal smears, 1 childhood peripheral blood, and 2 adult peripheral blood. Eleven studies compared tissues from in vitro fertilization (IVF) conceptions with those of unassisted conceptions, 4 compared intracytoplasmic sperm injection with unassisted conceptions, 4 compared non-IVF fertility treatment (NIFT) with unassisted conceptions, 4 compared NIFT with IVF, and 5 compared an infertile population (conceiving via various methods) with an unassisted presumably fertile population. In studies assessing placental tissue, 1 gene with potential methylation changes due to IVF when compared with unassisted conceptions was identified by 2 studies. In blood, 11 potential genes with methylation changes due to IVF compared with unassisted conceptions were identified by 2 studies, 1 of which was identified by 3 studies. Three potentially affected genes were identified by 2 studies involving blood between intracytoplasmic sperm injection and unassisted populations. There were no overlapping genes identified in any tissue type between NIFT and unassisted populations, between NIFT and IVF, or the infertility combined population when compared with the unassisted fertile population. CONCLUSIONS Comparing studies is challenging due to differing variables between analyses. However, even in similar tissue types and populations, overlapping methylation changes are limited, suggesting that differences due to ART are minimal. RELEVANCE Information from this systematic review is significant for providers and patients who provide and use ART to understand methylation risks that may be associated with the technology.
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Affiliation(s)
- Amelia M Schaub
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Tania L Gonzalez
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Anna E Dorfman
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Allynson G Novoa
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Rimsha A Hussaini
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Paige M Harakuni
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Mayaal H Khan
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Brandon J Shabani
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Akhila Swarna
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Erica T Wang
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Jessica L Chan
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - John Williams
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California; David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Margareta D Pisarska
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California; David Geffen School of Medicine at UCLA, Los Angeles, California.
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Belda-Perez R, Heras S, Cimini C, Romero-Aguirregomezcorta J, Valbonetti L, Colosimo A, Colosimo BM, Santoni S, Barboni B, Bernabò N, Coy P. Advancing bovine in vitro fertilization through 3D printing: the effect of the 3D printed materials. Front Bioeng Biotechnol 2023; 11:1260886. [PMID: 37929185 PMCID: PMC10621798 DOI: 10.3389/fbioe.2023.1260886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 09/15/2023] [Indexed: 11/07/2023] Open
Abstract
Nowadays there is an increasing demand for assisted reproductive technologies due to the growth of infertility problems. Naturally, fertilization occurs in the oviduct, where the oviductal epithelial cells (OECs) secrete many molecules that affect the embryo's metabolism and protect it from oxidative stress. When the OECs are grown in 3D culture systems, they maintain a great part of their functional characteristics, making them an excellent model for in vitro fertilization (IVF) studies. In this work, we aimed to evaluate the suitability of different 3D-printing processes in conjunction with the corresponding set of commercially available biomaterials: extrusion-based processing using polylactic acid (PLA) and polycaprolactone (PCL) and stereolithography or digital-light processing using polyethylene-glycol-diacrylate (PEGDA) with different stiffness (PEGDA500, PEGDA200, PEGDA PhotoInk). All the 3D-printed scaffolds were used to support IVF process in a bovine embryo assay. Following fertilization, embryo development and quality were assessed in terms of cleavage, blastocyst rate at days 7 and 8, total cell number (TCN), inner cell mass/trophectoderm ratio (ICN/TE), and apoptotic cell ratio (ACR). We found a detrimental effect on cleavage and blastocyst rates when the IVF was performed on any medium conditioned by most of the materials available for digital-light processing (PEGDA200, PEGDA500). The observed negative effect could be possibly due to some leaked compound used to print and stabilize the scaffolds, which was not so evident however with PEGDA PhotoInk. On the other hand, all the extrusion-based processable materials did not cause any detrimental effect on cleavage or blastocyst rates. The principal component analysis reveals that embryos produced in presence of 3D-printed scaffolds produced via extrusion exhibit the highest similarity with the control embryos considering cleavage, blastocyst rates, TCN, ICN/TE and ACR per embryo. Conversely, all the photo-cross linkable materials or medium conditioned by PLA, lead to the highest dissimilarities. Since the use of PCL scaffolds, as well as its conditioned medium, bring to embryos that are more similar to the control group. Our results suggest that extrusion-based 3D printing of PCL could be the best option to be used for new IVF devices, possibly including the support of OECs, to enhance bovine embryo development.
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Affiliation(s)
- Ramses Belda-Perez
- Department of Biosciences and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
- Physiology of Reproduction Group, Department of Physiology, Faculty of Veterinary Medicine, International Excellence Campus for Higher Education and Research (Campus Mare Nostrum), University of Murcia, Murcia, Spain
| | - Sonia Heras
- Physiology of Reproduction Group, Department of Physiology, Faculty of Veterinary Medicine, International Excellence Campus for Higher Education and Research (Campus Mare Nostrum), University of Murcia, Murcia, Spain
| | - Costanza Cimini
- Department of Biosciences and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Jon Romero-Aguirregomezcorta
- Physiology of Reproduction Group, Department of Physiology, Faculty of Veterinary Medicine, International Excellence Campus for Higher Education and Research (Campus Mare Nostrum), University of Murcia, Murcia, Spain
| | - Luca Valbonetti
- Department of Biosciences and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
- Institute of Biochemistry and Cell Biology (CNRIBBC/EMMA/Infrafrontier/IMPC), National Research Council, Rome, Italy
| | - Alessia Colosimo
- Department of Biosciences and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | | | - Silvia Santoni
- Department of Mechanical Engineering, Politecnico di Milano, Milano, Italy
| | - Barbara Barboni
- Department of Biosciences and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
| | - Nicola Bernabò
- Department of Biosciences and Technology for Food, Agriculture and Environment, University of Teramo, Teramo, Italy
- Institute of Biochemistry and Cell Biology (CNRIBBC/EMMA/Infrafrontier/IMPC), National Research Council, Rome, Italy
| | - Pilar Coy
- Physiology of Reproduction Group, Department of Physiology, Faculty of Veterinary Medicine, International Excellence Campus for Higher Education and Research (Campus Mare Nostrum), University of Murcia, Murcia, Spain
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5
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Eggermann T, Monk D, de Nanclares GP, Kagami M, Giabicani E, Riccio A, Tümer Z, Kalish JM, Tauber M, Duis J, Weksberg R, Maher ER, Begemann M, Elbracht M. Imprinting disorders. Nat Rev Dis Primers 2023; 9:33. [PMID: 37386011 DOI: 10.1038/s41572-023-00443-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/19/2023] [Indexed: 07/01/2023]
Abstract
Imprinting disorders (ImpDis) are congenital conditions that are characterized by disturbances of genomic imprinting. The most common individual ImpDis are Prader-Willi syndrome, Angelman syndrome and Beckwith-Wiedemann syndrome. Individual ImpDis have similar clinical features, such as growth disturbances and developmental delay, but the disorders are heterogeneous and the key clinical manifestations are often non-specific, rendering diagnosis difficult. Four types of genomic and imprinting defect (ImpDef) affecting differentially methylated regions (DMRs) can cause ImpDis. These defects affect the monoallelic and parent-of-origin-specific expression of imprinted genes. The regulation within DMRs as well as their functional consequences are mainly unknown, but functional cross-talk between imprinted genes and functional pathways has been identified, giving insight into the pathophysiology of ImpDefs. Treatment of ImpDis is symptomatic. Targeted therapies are lacking owing to the rarity of these disorders; however, personalized treatments are in development. Understanding the underlying mechanisms of ImpDis, and improving diagnosis and treatment of these disorders, requires a multidisciplinary approach with input from patient representatives.
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Affiliation(s)
- Thomas Eggermann
- Institute for Human Genetics and Genomic Medicine, Medical Faculty, RWTH Aachen University, Aachen, Germany.
| | - David Monk
- School of Biological Sciences, University of East Anglia, Norwich, UK
| | - Guiomar Perez de Nanclares
- Rare Diseases Research Group, Molecular (Epi)Genetics Laboratory, Bioaraba Research Health Institute, Araba University Hospital-Txagorritxu, Vitoria-Gasteiz, Spain
| | - Masayo Kagami
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Eloïse Giabicani
- Sorbonne Université, INSERM, Centre de Recherche Saint-Antoine, APHP, Hôpital Armand Trousseau, Endocrinologie Moléculaire et Pathologies d'Empreinte, Paris, France
| | - Andrea Riccio
- Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, Università della Campania Luigi Vanvitelli, Caserta, Italy
- Institute of Genetics and Biophysics A. Buzzati-Traverso, CNR, Naples, Italy
| | - Zeynep Tümer
- Kennedy Center, Department of Clinical Genetics, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jennifer M Kalish
- Division of Human Genetics and Center for Childhood Cancer Research, Children's Hospital of Philadelphia and the Departments of Pediatrics and Genetics at the Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Maithé Tauber
- Centre de Référence Maladies Rares PRADORT (syndrome de PRADer-Willi et autres Obésités Rares avec Troubles du comportement alimentaire), Hôpital des Enfants, CHU Toulouse, Toulouse, France
- Institut Toulousain des Maladies Infectieuses et Inflammatoires (Infinity) INSERM UMR1291 - CNRS UMR5051 - Université Toulouse III, Toulouse, France
| | - Jessica Duis
- Department of Pediatrics, Children's Hospital Colorado, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Rosanna Weksberg
- Division of Clinical and Metabolic Genetics, Department of Paediatrics and Genetics and Genome Biology Program, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada
- Institute of Medical Sciences and Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Eamonn R Maher
- Department of Medical Genetics, University of Cambridge, Cambridge, UK
| | - Matthias Begemann
- Institute for Human Genetics and Genomic Medicine, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Miriam Elbracht
- Institute for Human Genetics and Genomic Medicine, Medical Faculty, RWTH Aachen University, Aachen, Germany
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6
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Bilo L, Ochoa E, Lee S, Dey D, Kurth I, Kraft F, Rodger F, Docquier F, Toribio A, Bottolo L, Binder G, Fekete G, Elbracht M, Maher ER, Begemann M, Eggermann T. Molecular characterisation of 36 multilocus imprinting disturbance (MLID) patients: a comprehensive approach. Clin Epigenetics 2023; 15:35. [PMID: 36859312 PMCID: PMC9979536 DOI: 10.1186/s13148-023-01453-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 02/20/2023] [Indexed: 03/03/2023] Open
Abstract
BACKGROUND Imprinting disorders (ImpDis) comprise diseases which are caused by aberrant regulation of monoallelically and parent-of-origin-dependent expressed genes. A characteristic molecular change in ImpDis patients is aberrant methylation signatures at disease-specific loci, without an obvious DNA change at the specific differentially methylated region (DMR). However, there is a growing number of reports on multilocus imprinting disturbances (MLIDs), i.e. aberrant methylation at different DMRs in the same patient. These MLIDs account for a significant number of patients with specific ImpDis, and several reports indicate a central role of pathogenic maternal effect variants in their aetiology by affecting the maturation of the oocyte and the early embryo. Though several studies on the prevalence and the molecular causes of MLID have been conducted, homogeneous datasets comprising both genomic and methylation data are still lacking. RESULTS Based on a cohort of 36 MLID patients, we here present both methylation data obtained from next-generation sequencing (NGS, ImprintSeq) approaches and whole-exome sequencing (WES). The compilation of methylation data did not reveal a disease-specific MLID episignature, and a predisposition for the phenotypic modification was not obvious as well. In fact, this lack of epigenotype-phenotype correlation might be related to the mosaic distribution of imprinting defects and their functional relevance in specific tissues. CONCLUSIONS Due to the higher sensitivity of NGS-based approaches, we suggest that ImprintSeq might be offered at reference centres in case of ImpDis patients with unusual phenotypes but MLID negative by conventional tests. By WES, additional MLID causes than the already known maternal effect variants could not be identified, neither in the patients nor in the maternal exomes. In cases with negative WES results, it is currently unclear to what extent either environmental factors or undetected genetic variants contribute to MLID.
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Affiliation(s)
- Larissa Bilo
- Medical Faculty, Institute for Human Genetics and Genome Medicine, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Eguzkine Ochoa
- Department of Medical Genetics, University of Cambridge, Cambridge, CB2 0QQ, UK
| | - Sunwoo Lee
- Department of Medical Genetics, University of Cambridge, Cambridge, CB2 0QQ, UK
| | - Daniela Dey
- Medical Faculty, Institute for Human Genetics and Genome Medicine, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Ingo Kurth
- Medical Faculty, Institute for Human Genetics and Genome Medicine, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Florian Kraft
- Medical Faculty, Institute for Human Genetics and Genome Medicine, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Fay Rodger
- Department of Medical Genetics, University of Cambridge, Cambridge, CB2 0QQ, UK
- Stratified Medicine Core Laboratory NGS Hub, Department of Medical Genetics, University of Cambridge, Cambridge, UK
| | - France Docquier
- Department of Medical Genetics, University of Cambridge, Cambridge, CB2 0QQ, UK
- Stratified Medicine Core Laboratory NGS Hub, Department of Medical Genetics, University of Cambridge, Cambridge, UK
| | - Ana Toribio
- Department of Medical Genetics, University of Cambridge, Cambridge, CB2 0QQ, UK
- Stratified Medicine Core Laboratory NGS Hub, Department of Medical Genetics, University of Cambridge, Cambridge, UK
| | - Leonardo Bottolo
- Department of Medical Genetics, University of Cambridge, Cambridge, CB2 0QQ, UK
- MRC Biostatistics Unit, School of Clinical Medicine, University of Cambridge, Cambridge, UK
- The Alan Turing Institute, London, UK
| | - Gerhard Binder
- Pediatric Endocrinology, University Children's Hospital, Universiy of Tuebingen, Tuebingen, Germany
| | - György Fekete
- Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Miriam Elbracht
- Medical Faculty, Institute for Human Genetics and Genome Medicine, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Eamonn R Maher
- Department of Medical Genetics, University of Cambridge, Cambridge, CB2 0QQ, UK
| | - Matthias Begemann
- Medical Faculty, Institute for Human Genetics and Genome Medicine, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany
| | - Thomas Eggermann
- Medical Faculty, Institute for Human Genetics and Genome Medicine, RWTH Aachen University, Pauwelsstr. 30, 52074, Aachen, Germany.
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7
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Gonzalez TL, Schaub AM, Lee B, Cui J, Taylor KD, Dorfman AE, Goodarzi MO, Wang ET, Chen YDI, Rotter JI, Hussaini R, Harakuni PM, Khan MH, Rich SS, Farber CR, Williams J, Pisarska MD. Infertility and treatments used have minimal effects on first-trimester placental DNA methylation and gene expression. Fertil Steril 2023; 119:301-312. [PMID: 36379261 DOI: 10.1016/j.fertnstert.2022.11.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 11/09/2022] [Accepted: 11/10/2022] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To determine whether deoxyribonucleic acid (DNA) methylation alterations exist in the first-trimester human placenta between conceptions using fertility treatments and those that do not and, if so, whether they are the result of underlying infertility or fertility treatments. We also assessed whether significant alterations led to changes in gene expression. DESIGN We compared DNA methylation of the first-trimester placenta from singleton pregnancies that resulted in live births from unassisted, in vitro fertilization (IVF), and non-IVF fertility treatment (NIFT) conceptions using the Infinium MethylationEPIC BeadChip array. Significant CpG sites were compared with corresponding ribonucleic acid sequencing analysis in similar cohorts to determine whether methylation alterations lead to differences in gene expression. SETTING Academic medical center. PATIENT(S) A total of 138 singleton pregnancies undergoing chorionic villus sampling resulting in a live birth were recruited for methylation analysis (56 unassisted, 38 NIFT, and 44 IVF conceptions). Ribonucleic acid-sequencing data consisted of 141 subjects (74 unassisted, 33 NIFT, and 34 IVF conceptions) of which 116 overlapped with the methylation cohort. INTERVENTION(S) In vitro fertilization-conceived pregnancy or pregnancy conceived via NIFT, such as ovulation induction and intrauterine insemination. MAIN OUTCOME MEASURE(S) Significant methylation changes at CpG sites after adjustment for multiple comparisons. The secondary outcome was gene expression changes of significant CpG sites. RESULT(S) Of the 741,145 probes analyzed in the placenta, few were significant at Bonferroni <0.05: 185 CpG sites (0.025%) significant in pregnancies conceived with the fertility treatments (NIFT + IVF) vs. unassisted conceptions; 28 in NIFT vs. unassisted; 195 in IVF vs. unassisted; and only 13 (0.0018%) in IVF vs. NIFT conceptions. Of all significant CpG sites combined, 10% (35) were located in genes with suggestive gene expression changes, but none were significant after adjustment for multiple comparisons (ribonucleic acid sequencing false discovery rate <0.05). None of the 13 differentially methylated probes in the IVF vs. NIFT placenta were located in genes with suggestive IVF vs. NIFT gene expression differences. CONCLUSION(S) Underlying infertility is the most significant contributor to the minimal differences in first-trimester placental methylation, and not the specific fertility treatment used, such as IVF.
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Affiliation(s)
- Tania L Gonzalez
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Amelia M Schaub
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Bora Lee
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Jinrui Cui
- Division of Endocrinology, Diabetes, and Metabolism, Department of Internal Medicine, Cedars Sinai Medical Center, Los Angeles, California
| | - Kent D Taylor
- The Institute for Translational Genomics and Population Sciences, Department of Pediatrics, The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, California
| | - Anna E Dorfman
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Mark O Goodarzi
- Division of Endocrinology, Diabetes, and Metabolism, Department of Internal Medicine, Cedars Sinai Medical Center, Los Angeles, California
| | - Erica T Wang
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California; David Geffen School of Medicine, University of California, Los Angeles, California
| | - Yii-Der Ida Chen
- The Institute for Translational Genomics and Population Sciences, Department of Pediatrics, The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, California
| | - Jerome I Rotter
- The Institute for Translational Genomics and Population Sciences, Department of Pediatrics, The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, California
| | - Rimsha Hussaini
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Paige M Harakuni
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Mayaal H Khan
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Stephen S Rich
- Center for Public Health Genomics, University of Virginia, Charlottesville, Virginia
| | - Charles R Farber
- Center for Public Health Genomics, University of Virginia, Charlottesville, Virginia
| | - John Williams
- David Geffen School of Medicine, University of California, Los Angeles, California; Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California
| | - Margareta D Pisarska
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Cedars Sinai Medical Center, Los Angeles, California; David Geffen School of Medicine, University of California, Los Angeles, California; Department of Biomedical Sciences, Cedars Sinai Medical Center, Los Angeles, California.
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8
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Zhu Y, Zhou Y, Liu S, Guo F, Wu B, Xu X, Luo C, Li H, Hua R. Blastocyst culture of non-top-quality cleavage embryos may increase the risk of anembryonic pregnancy following in vitro fertilization: a retrospective cohort study. ANNALS OF TRANSLATIONAL MEDICINE 2022; 10:1364. [PMID: 36660687 PMCID: PMC9843398 DOI: 10.21037/atm-22-5809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 12/19/2022] [Indexed: 12/29/2022]
Abstract
Background Anembryonic pregnancy (AP) is the most severe dysmorphogenesis of human embryo development and a frequent presentation of early pregnancy loss (EPL). Studies have analyzed the association between assisted reproductive technologies (ART) and EPL. However, the specific relationship between ART and AP has not been fully elucidated. Several studies suggested that non-genomic anomalies might be related to AP and ART might increase the risk of epigenetic changes, thus possibly detecting some associations between ART and AP. Our study aims to find out any possible risk factors of AP in ART treatments, and translate the results into clinical practice. Methods A retrospective cohort study was conducted in Nanfang Hospital. Data from 1,765 singleton pregnancies following fresh or frozen-thawed embryo transfer from January 2014 to December 2017 were collated with the inclusion of EPLs and normal live births (NLB). Participants were divided into three groups: NLB (full-term birth with normal body weight infants), EPL (spontaneous pregnancy loss prior to 13 weeks gestation) with embryos (EE), and APs (embryonic pole was invisible in two consecutive ultrasound examinations). The basic characteristics of the patients and the association between ART-related variables and AP were analyzed using one-way analysis of variance (ANOVA) and multivariable logistic regression model, respectively. Products of conception (POC) from AP and EE patients received karyotype analysis using multiplex ligation-dependent probe amplification (MLPA). Results Blastocyst culture of non-top-quality cleavage stage embryos almost doubled the percentage of AP in EPL (45.9% vs. 24.4%, P=0.037), and the normal euploid rate was significantly higher in the AP group (50.5% vs. 32.3%, P=0.003). Using multivariable logistic regression model, we found that blastocyst transfer and advanced maternal age might be risk factors for AP (OR >1, P<0.05). Deceased β-HCG level might indicate its occurrence (OR <1, P<0.001) while CoQ10 supplementation might be a protective factor (OR <1, P<0.001). Conclusions The occurrence of AP may be due to epigenetic abnormalities associated with advanced maternal age and extended in vitro embryo culture, while CoQ10 supplementation may be a potential method in preventing AP. Future multi-center prospective cohort studies should be conducted to verify these results.
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Affiliation(s)
- Yongtong Zhu
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yao Zhou
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Siping Liu
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Feiyan Guo
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Biao Wu
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiya Xu
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Chen Luo
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hong Li
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Rui Hua
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical University, Guangzhou, China
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9
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Leroy JLMR, Meulders B, Moorkens K, Xhonneux I, Slootmans J, De Keersmaeker L, Smits A, Bogado Pascottini O, Marei WFA. Maternal metabolic health and fertility: we should not only care about but also for the oocyte! Reprod Fertil Dev 2022; 35:1-18. [PMID: 36592978 DOI: 10.1071/rd22204] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Metabolic disorders due to obesity and unhealthy lifestyle directly alter the oocyte's microenvironment and impact oocyte quality. Oxidative stress and mitochondrial dysfunction play key roles in the pathogenesis. Acute effects on the fully grown oocytes are evident, but early follicular stages are also sensitive to metabolic stress leading to a long-term impact on follicular cells and oocytes. Improving the preconception health is therefore of capital importance but research in animal models has demonstrated that oocyte quality is not fully recovered. In the in vitro fertilisation clinic, maternal metabolic disorders are linked with disappointing assisted reproductive technology results. Embryos derived from metabolically compromised oocytes exhibit persistently high intracellular stress levels due to weak cellular homeostatic mechanisms. The assisted reproductive technology procedures themselves form an extra burden for these defective embryos. Minimising cellular stress during culture using mitochondrial-targeted therapy could rescue compromised embryos in a bovine model. However, translating such applications to human in vitro fertilisation clinics is not simple. It is crucial to consider the sensitive epigenetic programming during early development. Research in humans and relevant animal models should result in preconception care interventions and in vitro strategies not only aiming at improving fertility but also safeguarding offspring health.
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Affiliation(s)
- J L M R Leroy
- Gamete Research Centre, Department of Veterinary Sciences, University of Antwerp, Wilrijk, Belgium
| | - B Meulders
- Gamete Research Centre, Department of Veterinary Sciences, University of Antwerp, Wilrijk, Belgium
| | - K Moorkens
- Gamete Research Centre, Department of Veterinary Sciences, University of Antwerp, Wilrijk, Belgium
| | - I Xhonneux
- Gamete Research Centre, Department of Veterinary Sciences, University of Antwerp, Wilrijk, Belgium
| | - J Slootmans
- Gamete Research Centre, Department of Veterinary Sciences, University of Antwerp, Wilrijk, Belgium
| | - L De Keersmaeker
- Gamete Research Centre, Department of Veterinary Sciences, University of Antwerp, Wilrijk, Belgium
| | - A Smits
- Gamete Research Centre, Department of Veterinary Sciences, University of Antwerp, Wilrijk, Belgium
| | - O Bogado Pascottini
- Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - W F A Marei
- Gamete Research Centre, Department of Veterinary Sciences, University of Antwerp, Wilrijk, Belgium
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10
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Carli D, Operti M, Russo S, Cocchi G, Milani D, Leoni C, Prada E, Melis D, Falco M, Spina J, Uliana V, Sara O, Sirchia F, Tarani L, Macchiaiolo M, Cerrato F, Sparago A, Pignata L, Tannorella P, Cardaropoli S, Bartuli A, Riccio A, Ferrero GB, Mussa A. Clinical and molecular characterization of patients affected by Beckwith-Wiedemann spectrum conceived through assisted reproduction techniques. Clin Genet 2022; 102:314-323. [PMID: 35842840 PMCID: PMC9545072 DOI: 10.1111/cge.14193] [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: 06/21/2022] [Revised: 07/13/2022] [Accepted: 07/14/2022] [Indexed: 12/02/2022]
Abstract
The prevalence of Beckwith–Wiedemann spectrum (BWSp) is tenfold increased in children conceived through assisted reproductive techniques (ART). More than 90% of ART‐BWSp patients reported so far display imprinting center 2 loss‐of‐methylations (IC2‐LoM), versus 50% of naturally conceived BWSp patients. We describe a cohort of 74 ART‐BWSp patients comparing their features with a cohort of naturally conceived BWSp patients, with the ART‐BWSp patients previously described in literature, and with the general population of children born from ART. We found that the distribution of UPD(11)pat was not significantly different in ART and naturally conceived patients. We observed 68.9% of IC2‐LoM and 16.2% of mosaic UPD(11)pat in our ART cohort, that strongly differ from the figure reported in other cohorts so far. Since UPD(11)pat likely results from post‐fertilization recombination events, our findings allows to hypothesize that more complex molecular mechanisms, besides methylation disturbances, may underlie BWSp increased risk in ART pregnancies. Moreover, comparing the clinical features of ART and non‐ART BWSp patients, we found that ART‐BWSp patients might have a milder phenotype. Finally, our data show a progressive increase in the prevalence of BWSp over time, paralleling that of ART usage in the last decades.
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Affiliation(s)
- Diana Carli
- Department of Public Health and Pediatric Sciences, University of Torino, Torino, Italy
| | - Matteo Operti
- Department of Public Health and Pediatric Sciences, University of Torino, Torino, Italy
| | - Silvia Russo
- Research Laboratory of Medical Cytogenetics and Molecular Genetics, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Guido Cocchi
- Neonatology Unit, St. Orsola-Malpighi Polyclinic, Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Via Massarenti 9, Bologna, BO, Italy
| | - Donatella Milani
- Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - Chiara Leoni
- Center for Rare Diseases and Birth Defects, Department of Woman and Child Health and Public Health, Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy
| | - Elisabetta Prada
- Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - Daniela Melis
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Fisciano, Italy
| | - Mariateresa Falco
- Pediatric Unit, San Giovanni di Dio e Ruggi D'Aragona University Hospital, Salerno, Italy
| | - Jennifer Spina
- Department of Public Health and Pediatric Sciences, University of Torino, Torino, Italy
| | - Vera Uliana
- Medical Genetics Unit, University Hospital of Parma, Parma, Italy
| | - Osimani Sara
- Department of Pediatrics, Scientific Institute San Raffaele, Milano, Italy
| | - Fabio Sirchia
- Unit of Medical Genetics, Department of Diagnostic Medicine, Fondazione IRCCS Policlinico San Matteo, Italy.,Department of Molecular Medicine, University of Pavia, Pavia, Italy
| | - Luigi Tarani
- Department of Pediatrics, Medical Faculty, "Sapienza" University of Rome, Italy
| | - Marina Macchiaiolo
- Rare Diseases and Medical Genetics, Department of Pediatric Medicine, Bambino Gesù Children's Hospital, IRCCS
| | - Flavia Cerrato
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), Università degli Studi della Campania "Luigi Vanvitelli", Caserta, Italy
| | - Angela Sparago
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), Università degli Studi della Campania "Luigi Vanvitelli", Caserta, Italy
| | - Laura Pignata
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), Università degli Studi della Campania "Luigi Vanvitelli", Caserta, Italy
| | - Pierpaola Tannorella
- Research Laboratory of Medical Cytogenetics and Molecular Genetics, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Simona Cardaropoli
- Department of Public Health and Pediatric Sciences, University of Torino, Torino, Italy
| | - Andrea Bartuli
- Rare Diseases and Medical Genetics, Department of Pediatric Medicine, Bambino Gesù Children's Hospital, IRCCS
| | - Andrea Riccio
- Department of Environmental Biological and Pharmaceutical Sciences and Technologies (DiSTABiF), Università degli Studi della Campania "Luigi Vanvitelli", Caserta, Italy.,Institute of Genetics and Biophysics A. Buzzati-Traverso, Consiglio Nazionale delle Ricerche, Napoli, Italy
| | | | - Alessandro Mussa
- Department of Public Health and Pediatric Sciences, University of Torino, Torino, Italy.,Pediatric Clinical Genetics Unit, Regina Margherita Childrens Hospital, Città della Salute e della Scienza di Torino, Torino, Italy
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11
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Ma GC, Chen TH, Wu WJ, Lee DJ, Lin WH, Chen M. Proposal for Practical Approach in Prenatal Diagnosis of Beckwith–Wiedemann Syndrome and Review of the Literature. Diagnostics (Basel) 2022; 12:diagnostics12071709. [PMID: 35885613 PMCID: PMC9315620 DOI: 10.3390/diagnostics12071709] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 07/07/2022] [Accepted: 07/12/2022] [Indexed: 01/08/2023] Open
Abstract
Background: Beckwith–Wiedemann syndrome (BWS) is a phenotypically and genetically heterogeneous disorder associated with epigenetic/genetic aberrations on chromosome 11p15.4p15.5. There is no consensus criterion for prenatal diagnosis of BWS. Methods: Three BWS patients with their clinical histories, prenatal ultrasonographic features, and results of molecular diagnosis were presented. Likewise, by incorporating the findings of our cases and literature review, the phenotypic spectrum and genotype–phenotype correlations of fetal BWS were summarized, and a practical approach in prenatal diagnosis of BWS was proposed. Results: A total of 166 BWS cases with prenatal features were included for analysis. Common fetal features include abdominal wall defects (42.8%), polyhydramnios (33.1%), and macrosomia (32.5%). Molecular pathologies include methylation changes in imprinting control region 1 and 2 (ICR1 and ICR2), paternal uniparental disomy of chromosome 11p15.5, copy number change involving 11p15, etc. Some genotype–phenotype correlations were observed. However, the broad phenotypic spectrum but limited features manifested by affected fetuses rendering ultrasonographic diagnosis not easy. Conclusions: Molecular tests are used for prenatal diagnosis of BWS suspected by ultrasonography. Methylation-specific multiplex ligation-dependent probe amplification (MS-MLPA) is recommended as the first-line molecular tool because it simultaneously detects ICR1/ICR2 methylation statuses and copy numbers that solve the majority of clinical cases in the prenatal scenario.
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Affiliation(s)
- Gwo-Chin Ma
- Department of Genomic Medicine and Center for Medical Genetics, Changhua Christian Hospital, Changhua 50046, Taiwan; (G.-C.M.); (W.-J.W.)
- Research Department, Changhua Christian Hospital, Changhua 50006, Taiwan;
- Department of Medical Laboratory Science and Biotechnology, Central Taiwan University of Science and Technology, Taichung 40601, Taiwan
| | - Tze-Ho Chen
- Department of Obstetrics and Gynecology, Changhua Christian Hospital, Changhua 50006, Taiwan;
| | - Wan-Ju Wu
- Department of Genomic Medicine and Center for Medical Genetics, Changhua Christian Hospital, Changhua 50046, Taiwan; (G.-C.M.); (W.-J.W.)
- Department of Obstetrics and Gynecology, Changhua Christian Hospital, Changhua 50006, Taiwan;
| | - Dong-Jay Lee
- Research Department, Changhua Christian Hospital, Changhua 50006, Taiwan;
| | - Wen-Hsiang Lin
- Welgene Biotechnology Company, Nangang Business Park, Taipei 11560, Taiwan;
| | - Ming Chen
- Department of Genomic Medicine and Center for Medical Genetics, Changhua Christian Hospital, Changhua 50046, Taiwan; (G.-C.M.); (W.-J.W.)
- Research Department, Changhua Christian Hospital, Changhua 50006, Taiwan;
- Department of Obstetrics and Gynecology, Changhua Christian Hospital, Changhua 50006, Taiwan;
- Department of Medical Genetics, National Taiwan University Hospital, Taipei 10041, Taiwan
- Department of Obstetrics and Gynecology, College of Medicine, National Taiwan University, Taipei 10041, Taiwan
- Department of Medical Science, National Tsing Hua University, Hsinchu 30013, Taiwan
- Department of Biomedical Science, Da-Yeh University, Changhua 51591, Taiwan
- Department of Post-Baccalaureate Medicine, College of Medicine, National Chung Hsing University, Taichung 40227, Taiwan
- Correspondence: or ; Tel.: +886-4722-5121 (ext. 2323)
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12
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Prenatal and Neonatal Characteristics of Children with Prader-Willi Syndrome. J Clin Med 2022; 11:jcm11030679. [PMID: 35160130 PMCID: PMC8837147 DOI: 10.3390/jcm11030679] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 01/25/2022] [Accepted: 01/26/2022] [Indexed: 12/10/2022] Open
Abstract
Objective: Prader-Willi syndrome (PWS) is a rare genetic syndrome with a wide spectrum of clinical features in early life. Late diagnoses are still present. We characterized the perinatal and neonatal features of PWS, compared them with those of healthy newborns and assessed the prenatal and neonatal differences between the genetic subtypes. Design: A cohort study in children with PWS. The prevalence of variables was compared with healthy infants (PLUTO cohort) and to population statistics from literature. Patients: 244 infants with PWS and 365 healthy infants. Measurements: Data on prenatal and neonatal variables in both cohorts. Population statistics were collected through an extensive literature search. Results: A higher prevalence of maternal age >35 years was found in PWS compared to healthy infants and population statistics, and the highest maternal age was found in the mUPD group. Higher prevalence of polyhydramnios, caesarean section, labour induction and breech presentation, and lower birth weight SDS was found in PWS compared to healthy infants. High prevalences of decreased fetal movements (78.5%), hypotonia (100%), cryptorchism (95.9%) and poor sucking/tube feeding (93.9%) were found in PWS. Conclusions: This study presents an overview of prenatal and neonatal variables in infants with PWS compared to healthy infants. Our findings may increase clinical awareness of the early perinatal signs of PWS by obstetricians, neonatologists and all those involved in infant care, enabling early diagnosis and start of multidisciplinary treatment.
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13
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Barberet J, Binquet C, Guilleman M, Romain G, Bruno C, Martinaud A, Ginod P, Cavalieri M, Amblot C, Choux C, Fauque P. Does underlying infertility in natural conception modify the epigenetic control of imprinted genes and transposable elements in newborns? Reprod Biomed Online 2022; 44:706-715. [DOI: 10.1016/j.rbmo.2022.01.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 11/30/2021] [Accepted: 01/10/2022] [Indexed: 10/19/2022]
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Quantitative DNA Methylation Analysis and Epigenotype-Phenotype Correlations in Taiwanese Patients with Beckwith-Wiedemann Syndrome. J Pers Med 2021; 11:jpm11111066. [PMID: 34834418 PMCID: PMC8622080 DOI: 10.3390/jpm11111066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/17/2021] [Accepted: 10/21/2021] [Indexed: 11/17/2022] Open
Abstract
Background: Beckwith-Wiedemann syndrome (BWS; OMIM 130650) is a rare overgrowth syndrome with tumor predisposition resulting from the abnormal expression or function of imprinted genes of the chromosome 11p15.5 imprinting gene cluster. The aim of this study was to identify the epigenotype-phenotype correlations of these patients using quantitative DNA methylation analysis. Methods: One hundred and four subjects with clinically suspected BWS were enrolled in this study. All of the subjects had been referred for diagnostic testing which was conducted using methylation profiling of H19-associated imprinting center (IC) 1 and KCNQ1OT1-associated IC2 in high-resolution melting analysis and methylation quantification with the MassARRAY assay. Correlations between the quantitative DNA methylation status and clinical manifestations of the enrolled subjects were analyzed. Results: Among the 104 subjects, 19 had IC2 hypomethylation, 2 had IC1 hypermethylation, and 10 had paternal uniparental disomy (pUPD). The subjects with IC2 hypomethylation were characterized by significantly more macroglossia but less hemihypertrophy compared to the subjects with pUPD (p < 0.05). For 19 subjects with IC2 hypomethylation, the IC2 methylation level was significantly different (p < 0.05) between the subjects with and without features including macroglossia (IC2 methylation level: 11.1% vs. 30.0%) and prenatal or postnatal overgrowth (8.5% vs. 16.9%). The IC2 methylation level was negatively correlated with birth weight z score (p < 0.01, n = 19) and birth height z score (p < 0.05, n = 13). For 36 subjects with clinically diagnosed BWS, the IC2 methylation level was negatively correlated with the BWS score (r = −0.592, p < 0.01). The IC1 methylation level showed the tendency of positive correlation with the BWS score without statistical significance (r = 0.137, p > 0.05). Conclusions: Lower IC2 methylation and higher IC1 methylation levels were associated with greater disease severity in the subjects with clinically diagnosed BWS. Quantitative DNA methylation analysis using the MassARRAY assay could improve the detection of epigenotype-phenotype correlations, which could further promote better genetic counseling and medical care for these patients.
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15
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Park KS, Rahat B, Lee HC, Yu ZX, Noeker J, Mitra A, Kean CM, Knutsen RH, Springer D, Gebert CM, Kozel BA, Pfeifer K. Cardiac pathologies in mouse loss of imprinting models are due to misexpression of H19 long noncoding RNA. eLife 2021; 10:e67250. [PMID: 34402430 PMCID: PMC8425947 DOI: 10.7554/elife.67250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 08/04/2021] [Indexed: 12/24/2022] Open
Abstract
Maternal loss of imprinting (LOI) at the H19/IGF2 locus results in biallelic IGF2 and reduced H19 expression and is associated with Beckwith--Wiedemann syndrome (BWS). We use mouse models for LOI to understand the relative importance of Igf2 and H19 mis-expression in BWS phenotypes. Here we focus on cardiovascular phenotypes and show that neonatal cardiomegaly is exclusively dependent on increased Igf2. Circulating IGF2 binds cardiomyocyte receptors to hyperactivate mTOR signaling, resulting in cellular hyperplasia and hypertrophy. These Igf2-dependent phenotypes are transient: cardiac size returns to normal once Igf2 expression is suppressed postnatally. However, reduced H19 expression is sufficient to cause progressive heart pathologies including fibrosis and reduced ventricular function. In the heart, H19 expression is primarily in endothelial cells (ECs) and regulates EC differentiation both in vivo and in vitro. Finally, we establish novel mouse models to show that cardiac phenotypes depend on H19 lncRNA interactions with Mirlet7 microRNAs.
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Affiliation(s)
- Ki-Sun Park
- Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of HealthBethesdaUnited States
| | - Beenish Rahat
- Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of HealthBethesdaUnited States
| | - Hyung Chul Lee
- Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of HealthBethesdaUnited States
| | - Zu-Xi Yu
- Pathology Core, National Heart Lung and Blood Institute, National Institutes of HealthBethesdaUnited States
| | - Jacob Noeker
- Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of HealthBethesdaUnited States
| | - Apratim Mitra
- Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of HealthBethesdaUnited States
| | - Connor M Kean
- Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of HealthBethesdaUnited States
| | - Russell H Knutsen
- Laboratory of Vascular and Matrix Genetics, National Heart Lung and Blood Institute, National Institutes of HealthBethesdaUnited States
| | - Danielle Springer
- Murine Phenotyping Core, National Heart Lung and Blood Institute, National Institutes of HealthBethesdaUnited States
| | - Claudia M Gebert
- Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of HealthBethesdaUnited States
| | - Beth A Kozel
- Laboratory of Vascular and Matrix Genetics, National Heart Lung and Blood Institute, National Institutes of HealthBethesdaUnited States
| | - Karl Pfeifer
- Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of HealthBethesdaUnited States
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16
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Hong TK, Song JH, Lee SB, Do JT. Germ Cell Derivation from Pluripotent Stem Cells for Understanding In Vitro Gametogenesis. Cells 2021; 10:cells10081889. [PMID: 34440657 PMCID: PMC8394365 DOI: 10.3390/cells10081889] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/20/2021] [Accepted: 07/22/2021] [Indexed: 02/07/2023] Open
Abstract
Assisted reproductive technologies (ARTs) have developed considerably in recent years; however, they cannot rectify germ cell aplasia, such as non-obstructive azoospermia (NOA) and oocyte maturation failure syndrome. In vitro gametogenesis is a promising technology to overcome infertility, particularly germ cell aplasia. Early germ cells, such as primordial germ cells, can be relatively easily derived from pluripotent stem cells (PSCs); however, further progression to post-meiotic germ cells usually requires a gonadal niche and signals from gonadal somatic cells. Here, we review the recent advances in in vitro male and female germ cell derivation from PSCs and discuss how this technique is used to understand the biological mechanism of gamete development and gain insight into its application in infertility.
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17
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Ochoa E. Alteration of Genomic Imprinting after Assisted Reproductive Technologies and Long-Term Health. Life (Basel) 2021; 11:728. [PMID: 34440472 PMCID: PMC8398258 DOI: 10.3390/life11080728] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 06/24/2021] [Accepted: 07/15/2021] [Indexed: 01/16/2023] Open
Abstract
Assisted reproductive technologies (ART) are the treatment of choice for some infertile couples and even though these procedures are generally considered safe, children conceived by ART have shown higher reported risks of some perinatal and postnatal complications such as low birth weight, preterm birth, and childhood cancer. In addition, the frequency of some congenital imprinting disorders, like Beckwith-Wiedemann Syndrome and Silver-Russell Syndrome, is higher than expected in the general population after ART. Experimental evidence from animal studies suggests that ART can induce stress in the embryo and influence gene expression and DNA methylation. Human epigenome studies have generally revealed an enrichment of alterations in imprinted regions in children conceived by ART, but no global methylation alterations. ART procedures occur simultaneously with the establishment and maintenance of imprinting during embryonic development, so this may underlie the apparent sensitivity of imprinted regions to ART. The impact in adulthood of imprinting alterations that occurred during early embryonic development is still unclear, but some experimental evidence in mice showed higher risk to obesity and cardiovascular disease after the restriction of some imprinted genes in early embryonic development. This supports the hypothesis that imprinting alterations in early development might induce epigenetic programming of metabolism and affect long-term health. Given the growing use of ART, it is important to determine the impact of ART in genomic imprinting and long-term health.
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Affiliation(s)
- Eguzkine Ochoa
- Department of Medical Genetics, University of Cambridge and NIHR Cambridge Biomedical Research Centre, Cambridge CB2 0QQ, UK
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18
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Naillat F, Saadeh H, Nowacka-Woszuk J, Gahurova L, Santos F, Tomizawa SI, Kelsey G. Oxygen concentration affects de novo DNA methylation and transcription in in vitro cultured oocytes. Clin Epigenetics 2021; 13:132. [PMID: 34183052 PMCID: PMC8240245 DOI: 10.1186/s13148-021-01116-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 06/15/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Reproductive biology methods rely on in vitro follicle cultures from mature follicles obtained by hormonal stimulation for generating metaphase II oocytes to be fertilised and developed into a healthy embryo. Such techniques are used routinely in both rodent and human species. DNA methylation is a dynamic process that plays a role in epigenetic regulation of gametogenesis and development. In mammalian oocytes, DNA methylation establishment regulates gene expression in the embryos. This regulation is particularly important for a class of genes, imprinted genes, whose expression patterns are crucial for the next generation. The aim of this work was to establish an in vitro culture system for immature mouse oocytes that will allow manipulation of specific factors for a deeper analysis of regulatory mechanisms for establishing transcription regulation-associated methylation patterns. RESULTS An in vitro culture system was developed from immature mouse oocytes that were grown to germinal vesicles (GV) under two different conditions: normoxia (20% oxygen, 20% O2) and hypoxia (5% oxygen, 5% O2). The cultured oocytes were sorted based on their sizes. Reduced representative bisulphite sequencing (RRBS) and RNA-seq libraries were generated from cultured and compared to in vivo-grown oocytes. In the in vitro cultured oocytes, global and CpG-island (CGI) methylation increased gradually along with oocyte growth, and methylation of the imprinted genes was similar to in vivo-grown oocytes. Transcriptomes of the oocytes grown in normoxia revealed chromatin reorganisation and enriched expression of female reproductive genes, whereas in the 5% O2 condition, transcripts were biased towards cellular stress responses. To further confirm the results, we developed a functional assay based on our model for characterising oocyte methylation using drugs that reduce methylation and transcription. When histone methylation and transcription processes were reduced, DNA methylation at CGIs from gene bodies of grown oocytes presented a lower methylation profile. CONCLUSIONS Our observations reveal changes in DNA methylation and transcripts between oocytes cultured in vitro with different oxygen concentrations and in vivo-grown murine oocytes. Oocytes grown under 20% O2 had a higher correlation with in vivo oocytes for DNA methylation and transcription demonstrating that higher oxygen concentration is beneficial for the oocyte maturation in ex vivo culture condition. Our results shed light on epigenetic mechanisms for the development of oocytes from an immature to GV oocyte in an in vitro culture model.
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Affiliation(s)
- Florence Naillat
- Epigenetics Program, Babraham Institute, Cambridge, CB22 3AT, UK. .,Diseases Network Research Unit, Faculty of Biochemistry and Molecular Medicine, Oulu University, Oulu, Finland.
| | - Heba Saadeh
- Epigenetics Program, Babraham Institute, Cambridge, CB22 3AT, UK.,Department of Computer Science, King Abdullah II School of Information Technology, The University of Jordan, Amman, Jordan
| | - Joanna Nowacka-Woszuk
- Epigenetics Program, Babraham Institute, Cambridge, CB22 3AT, UK.,Department of Genetics and Animal Breeding, Poznan University of Life Sciences, Poznan, Poland
| | - Lenka Gahurova
- Epigenetics Program, Babraham Institute, Cambridge, CB22 3AT, UK.,Laboratory of Early Mammalian Development, Department of Molecular Biology and Genetics, University of South Bohemia, 37005, České Budějovice, Czech Republic
| | - Fatima Santos
- Epigenetics Program, Babraham Institute, Cambridge, CB22 3AT, UK
| | - Shin-Ichi Tomizawa
- Epigenetics Program, Babraham Institute, Cambridge, CB22 3AT, UK.,School of Medicine, Yokohama City University, Yokohama, Japan
| | - Gavin Kelsey
- Epigenetics Program, Babraham Institute, Cambridge, CB22 3AT, UK. .,Centre for Trophoblast Research, University of Cambridge, Cambridge, CB2 3EG, UK.
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19
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Cai S, Quan S, Yang G, Chen M, Ye Q, Wang G, Yu H, Wang Y, Qiao S, Zeng X. Nutritional Status Impacts Epigenetic Regulation in Early Embryo Development: A Scoping Review. Adv Nutr 2021; 12:1877-1892. [PMID: 33873200 PMCID: PMC8483970 DOI: 10.1093/advances/nmab038] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 02/03/2021] [Accepted: 03/11/2021] [Indexed: 12/12/2022] Open
Abstract
With the increasing maternal age and the use of assisted reproductive technology in various countries worldwide, the influence of epigenetic modification on embryonic development is increasingly notable and prominent. Epigenetic modification disorders caused by various nutritional imbalance would cause embryonic development abnormalities and even have an indelible impact on health in adulthood. In this scoping review, we summarize the main epigenetic modifications in mammals and the synergies among different epigenetic modifications, especially DNA methylation, histone acetylation, and histone methylation. We performed an in-depth analysis of the regulation of various epigenetic modifications on mammals from zygote formation to cleavage stage and blastocyst stage, and reviewed the modifications of key sites and their potential molecular mechanisms. In addition, we discuss the effects of nutrition (protein, lipids, and one-carbon metabolism) on epigenetic modification in embryos and emphasize the importance of various nutrients in embryonic development and epigenetics during pregnancy. Failures in epigenetic regulation have been implicated in mammalian and human early embryo loss and disease. With the use of reproductive technologies, it is becoming even more important to establish developmentally competent embryos. Therefore, it is essential to evaluate the extent to which embryos are sensitive to these epigenetic modifications and nutrition status. Understanding the epigenetic regulation of early embryo development will help us make better use of reproductive technologies and nutrition regulation to improve reproductive health in mammals.
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Affiliation(s)
- Shuang Cai
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
| | - Shuang Quan
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
| | - Guangxin Yang
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
| | - Meixia Chen
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
| | - Qianhong Ye
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
| | - Gang Wang
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
| | - Haitao Yu
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
| | - Yuming Wang
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
| | - Shiyan Qiao
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
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20
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Abbasi N, Moore A, Chiu P, Ryan G, Weksberg R, Shuman C, Steele L, Chitayat D. Prenatally diagnosed omphaloceles: Report of 92 cases and association with Beckwith-Wiedemann syndrome. Prenat Diagn 2021; 41:798-816. [PMID: 33687072 DOI: 10.1002/pd.5930] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 03/01/2021] [Accepted: 03/02/2021] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Describe the prevalence, perinatal and long-term outcomes of Beckwith-Wiedemann syndrome (BWS) among prenatally detected omphaloceles. METHODS All prenatally diagnosed omphaloceles from 2010 to 2015 within a single tertiary care centre were identified. An echocardiogram and detailed fetal ultrasound were performed, and amniocentesis was offered with karyotype/microarray analysis and BWS molecular testing. Perinatal, neonatal, and long-term outcomes were retrieved for BWS cases. RESULTS Among 92 omphaloceles, 62 had additional anomalies. Abnormal karyotypes were identified in 23/62 (37%) non-isolated and 2/30 (7%) isolated cases. One BWS case (5%) was identified among non-isolated omphaloceles and six BWS cases (37.5%) were identified among isolated omphaloceles after exclusion of aneuploidy. Among 19 BWS cases, 21% were conceived by ART. All omphaloceles underwent primary closure. Prenatally, macrosomia and polyhydramnios were seen in 42%. Macroglossia and nephromegaly were more commonly detected postnatally. Preterm birth occurred in 10/19 (53%) cases and cesarean deliveries were performed in 7/19 (40%) cases. Overall mortality was 20% (4/19). Embryonal tumors were diagnosed in 2/16 (12.5%) children, and neurodevelopmental outcomes were normal in 9/12 (75%) survivors. CONCLUSIONS After excluding aneuploidy, BWS was identified in 37.5% and 5% of isolated and non-isolated omphaloceles, respectively. Omphaloceles were small-moderate size with good long-term surgical and neurodevelopmental outcomes when isolated.
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Affiliation(s)
- Nimrah Abbasi
- Department of Obstetrics and Gynecology, The Ontario Fetal Center, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Aideen Moore
- Department of Pediatrics, Division of Neonatology, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Priscilla Chiu
- Division of General and Thoracic Surgery, Department of Surgery, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Greg Ryan
- Department of Obstetrics and Gynecology, The Ontario Fetal Center, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Rosanna Weksberg
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Cheryl Shuman
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada.,Department of Genetic Counselling, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Leslie Steele
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada.,Genome Diagnostics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - David Chitayat
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada.,Prenatal Diagnosis and Medical Genetics, Department of Obstetrics and Gynecology, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
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21
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Mazaheri Moghaddam M, Mazaheri Moghaddam M, Hamzeiy H, Baghbanzadeh A, Pashazadeh F, Sakhinia E. Genetic basis of acephalic spermatozoa syndrome, and intracytoplasmic sperm injection outcomes in infertile men: a systematic scoping review. J Assist Reprod Genet 2021; 38:573-586. [PMID: 33452591 DOI: 10.1007/s10815-020-02008-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 11/08/2020] [Indexed: 12/23/2022] Open
Abstract
PURPOSE Acephalic spermatozoa syndrome (ASS) is known as a severe type of teratozoospermia, defined as semen composed of mostly headless spermatozoa that affect male fertility. In this regard, this systematic review aimed to discuss gene variants associated with acephalic spermatozoa phenotype as well as the clinical outcomes of intracytoplasmic sperm injection (ICSI) treatment for the acephalic spermatozoa-associated male infertility. METHODS A systematic search was performed on PubMed, Embase, Scopus, and Ovid databases until May 17, 2020. This systematic scoping review was reported in terms of the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) statement. RESULTS Twenty articles were included in this systematic review. Whole-exome and Sanger sequencing have helped in the identification of variants in SUN5, PMFBP1, BRDT, TSGA10, DNAH6, HOOK1, and CEP112 genes as possible causes of this phenotype in humans. The results of the ICSI are conflicting due to both positive and negative reports of ICSI outcomes. CONCLUSION ASS has a genetic origin, and several genetic alterations related to the pathogenesis of this anomaly have been recently identified. Notably, only SUN5 and PMFBP1 mutations are well-known to be implicated in ASS. Accordingly, more functional studies are needed to confirm the pathogenicity of other variants. ICSI could provide a promising treatment for acephalic spermatozoa-associated male infertility. Besides the importance of sperm head-tail junction integrity, some other factors, whether within the sperm cell or female factors, may be involved in the ICSI outcome.
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Affiliation(s)
- Marziyeh Mazaheri Moghaddam
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Madiheh Mazaheri Moghaddam
- Department of Genetics and Molecular Medicine, School of Medicine, Zanjan University of Medical Sciences (ZUMS), Zanjan, Iran
| | - Hamid Hamzeiy
- Tabriz Genetic Analysis Centre (TGAC), Tabriz University of Medical Sciences, Tabriz, Iran.,Genomize Inc., Istanbul, Turkey
| | - Amir Baghbanzadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fariba Pashazadeh
- Research Center for Evidence-Based Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ebrahim Sakhinia
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran. .,Tabriz Genetic Analysis Centre (TGAC), Tabriz University of Medical Sciences, Tabriz, Iran.
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22
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Fauque P, De Mouzon J, Devaux A, Epelboin S, Gervoise-Boyer MJ, Levy R, Valentin M, Viot G, Bergère A, De Vienne C, Jonveaux P, Pessione F. Reproductive technologies, female infertility, and the risk of imprinting-related disorders. Clin Epigenetics 2020; 12:191. [PMID: 33308308 PMCID: PMC7731556 DOI: 10.1186/s13148-020-00986-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 11/23/2020] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Epidemiological studies suggest that singletons born from assisted reproductive technologies (ART) have a high risk of adverse perinatal outcomes, specifically for imprinting disorders. Because ART processes take place at times when epigenetic reprogramming/imprinting are occurring, there is concern that ART can affect genomic imprints. However, little is currently known about the risk of imprinting defects according to the type of ART or the type of underlying female infertility. From the French national health database, a cohort of 3,501,495 singletons born over a 5-year period (2013-2017) following fresh embryo or frozen embryo transfers (fresh-ET or FET from in vitro fertilization), intrauterine insemination, or natural conception was followed up to early childhood. Based on clinical features, several syndromes/diseases involving imprinted genes were monitored. The effects of ART conception and the underlying cause of female infertility were assessed. RESULTS Compared with infants conceived naturally, children born after fresh-ET had a higher prevalence of imprinting-related diseases, with an aOR of 1.43 [95% CI 1.13-1.81, p = 0.003]. Namely, we observed an increased risk of neonatal diabetes mellitus (1.96 aOR [95% CI 1.43-2.70], p < 0.001). There was an overall independent increase in risk of imprinting diseases for children with mothers diagnosed with endometriosis (1.38 aOR [95% CI 1.06-1.80], p = 0.02). Young and advanced maternal age, primiparity, obesity, smoking, and history of high blood pressure or diabetes were also associated with high global risk. CONCLUSIONS This prospective epidemiological study showed that the risk of clinically diagnosed imprinting-related diseases is increased in children conceived after fresh embryo transfers or from mothers with endometriosis. The increased perturbations in genomic imprinting could be caused by controlled ovarian hyperstimulation and potentially endometriosis through the impairment of endometrial receptivity and placentation, leading to epigenetic feto-placental changes. Further studies are now needed to improve understanding of the underlying molecular mechanisms (i.e. genetic or epigenetic causes).
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Affiliation(s)
- Patricia Fauque
- CHU Dijon Bourgogne, Laboratoire de Biologie de la Reproduction - CECOS - Université Bourgogne Franche-Comté - INSERM UMR1231, Dijon, France.
| | | | - Aviva Devaux
- Centre d'assistance medicale à la procreation, biologie de la reproduction, CHU Amiens, Amiens, France
| | - Sylvie Epelboin
- Centre d'assistance medicale à la procreation, gynécologie obstétrique, médecine de la reproduction, Université Paris 7 Diderot, groupe hospitalier Bichat Claude-Bernard, AP-HP, Paris, France
| | | | - Rachel Levy
- Sorbonne Université, Saint Antoine Research Center, INSERM équipe Lipodystrophies genetiques et acquises, Service de biologie de la reproduction-CECOS, Hôpital Tenon, AP-HP, 75012, Paris, France
| | - Morgane Valentin
- Diagnostic antenatal, gynécologie obstétrique, Université Paris 7 Diderot, groupe hospitalier Bichat Claude-Bernard, AP-HP, Paris, France
| | - Géraldine Viot
- Unité de Génétique Clinique de La Muette, 50 rue Nicolo, 75116, Paris, France
| | - Arianne Bergère
- Agence de la Biomédecine, 1 avenue du stade de France, 93212, La Plaine Saint Denis, France
| | - Claire De Vienne
- Agence de la Biomédecine, 1 avenue du stade de France, 93212, La Plaine Saint Denis, France
| | - Philippe Jonveaux
- Agence de la Biomédecine, 1 avenue du stade de France, 93212, La Plaine Saint Denis, France
| | - Fabienne Pessione
- Agence de la Biomédecine, 1 avenue du stade de France, 93212, La Plaine Saint Denis, France
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23
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Yoon JC, Casella JL, Litvin M, Dobs AS. Male reproductive health in cystic fibrosis. J Cyst Fibros 2020; 18 Suppl 2:S105-S110. [PMID: 31679721 DOI: 10.1016/j.jcf.2019.08.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/11/2019] [Accepted: 08/11/2019] [Indexed: 10/25/2022]
Abstract
The impact of cystic fibrosis (CF) on male reproductive health is profound. The vast majority of men with CF are infertile due to obstructive azoospermia. Multiple factors associated with CF contribute to an increased prevalence of testosterone deficiency, which adversely affects muscle mass, bone density, and quality of life. This article reviews the pathophysiology, diagnosis, and management of infertility and testosterone deficiency that occur in men with CF. With improving survival of CF patients, these topics are becoming more significant in their clinical care.
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Affiliation(s)
- John C Yoon
- Division of Endocrinology, Diabetes, and Metabolism, Department of Internal Medicine, University of California Davis School of Medicine, Sacramento, CA, USA.
| | - Julio Leey Casella
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, University of Florida School of Medicine, Gainesville, FL, USA
| | - Marina Litvin
- Division of Endocrinology, Metabolism, and Lipid Research, Department of Internal Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - Adrian S Dobs
- Division of Endocrinology and Metabolism, The Johns Hopkins School of Medicine, Baltimore, MD, USA
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24
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Zhu W, Zheng J, Wen Y, Li Y, Zhou C, Wang Z. Effect of embryo vitrification on the expression of brain tissue proteins in mouse offspring. Gynecol Endocrinol 2020; 36:973-977. [PMID: 32129689 DOI: 10.1080/09513590.2020.1734785] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Vitrification is widely used in assisted reproductive technologies. However, the nervous system of vitrification offspring is of concern, and research on this is lacking. Vitrification-born mice (vitrification group), conventional in vitro fertilization-embryo transfer pregnancy-born mice (IVF group), and natural pregnancy-born mice (control group) were used to study the effects of vitrification of mouse embryos on protein levels in the brain of offspring. Proteins differentially expressed among the three groups were analyzed using proteomic methods, including two-dimensional electrophoresis, mass spectrometry, and bioinformatics analysis. Immunohistochemistry was used to verify the expression of differentially expressed proteins, such as Actb and Actg1, in each group. Twenty differentially expressed proteins in the brain tissue were identified using two-dimensional protein electrophoresis and mass spectrometry. Bioinformatics analysis revealed that these proteins were related to the development of anatomical structure, signal transduction, transport, cell differentiation, and stress response (biological processes) and the binding of molecules in vivo (molecular functions). The Kyoto Encyclopedia of Genes and Genomes pathway analysis showed that the differentially expressed proteins were involved in 54 pathways, including phagosome, metabolic pathway, apoptosis, and cysteine and methionine metabolism. Thus, embryo vitrification may cause some changes in the mouse brain at the protein level, necessitating further safety assessment.
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Affiliation(s)
- Wenjing Zhu
- Reproductive Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- The Key Laboratory for Reproductive Medicine of Guangdong Province, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Jingxuan Zheng
- Department of Neurology, People's Hospital of Yangjiang, Yangjiang, China
| | - Yangxing Wen
- Reproductive Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- The Key Laboratory for Reproductive Medicine of Guangdong Province, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Yubin Li
- Reproductive Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- The Key Laboratory for Reproductive Medicine of Guangdong Province, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Canquan Zhou
- Reproductive Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- The Key Laboratory for Reproductive Medicine of Guangdong Province, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Zengyan Wang
- Reproductive Medicine Center, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- The Key Laboratory for Reproductive Medicine of Guangdong Province, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
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25
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Katja K, Inga V, Ramona L, Almuth C, Maria MN. Mucopolysaccharidosis type I due to maternal uniparental disomy of chromosome 4 with partial isodisomy of 4p16.3p15.2. Mol Genet Metab Rep 2020; 25:100660. [PMID: 33117653 PMCID: PMC7582098 DOI: 10.1016/j.ymgmr.2020.100660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 10/06/2020] [Accepted: 10/06/2020] [Indexed: 12/27/2022] Open
Abstract
Mucopolysaccharidosis type I (MPS I) is a rare lysosomal storage disease caused by biallelic mutations in IDUA, the gene coding for the lysosomal enzyme alpha L-iduronidase. Clinically MPS I is a chronic progressive multisystem disease typically presenting with coarse facial features, skeletal deformities, joint contractures, and multi-organ involvement. Hurler syndrome (MPS IH) represents the severe end of the spectrum of mucopolysaccharidosis type I and is characterized by central nervous system involvement leading to childhood dementia. Here we report on a severe affected MPS IH patient who is homozygous for a splice site mutation (c.158 + 1G > A) in the IDUA gene. Further analyses revealed maternal uniparental disomy of chromosome 4 with partial isodisomy of the telomeric end of chromosome 4 (4.p16.3p15.2), representing an extraordinary mode of inheritance with a much lower re-occurrence risk for MPS I in the family.
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Affiliation(s)
- Kloth Katja
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Department of Pediatric Hematology and Oncology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Vater Inga
- Institute of Human Genetics, University Medical Center Schleswig-Holstein, Kiel, Germany
| | - Lindschau Ramona
- International Center for Lysosomal Disorders (ICLD), Department of Pediatrics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Caliebe Almuth
- Institute of Human Genetics, University Medical Center Schleswig-Holstein, Kiel, Germany
| | - Muschol Nicole Maria
- International Center for Lysosomal Disorders (ICLD), Department of Pediatrics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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26
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Fu W, Yue Y, Miao K, Xi G, Zhang C, Wang W, An L, Tian J. Repression of FGF signaling is responsible for Dnmt3b inhibition and impaired de novo DNA methylation during early development of in vitro fertilized embryos. Int J Biol Sci 2020; 16:3085-3099. [PMID: 33061820 PMCID: PMC7545699 DOI: 10.7150/ijbs.51607] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 09/12/2020] [Indexed: 12/30/2022] Open
Abstract
Well-orchestrated epigenetic modifications during early development are essential for embryonic survival and postnatal growth. Erroneous epigenetic modifications due to environmental perturbations such as manipulation and culture of embryos during in vitro fertilization (IVF) are linked to various short- or long-term consequences. Among these, DNA methylation defects are of great concern. Despite the critical role of DNA methylation in determining embryonic development potential, the mechanisms underlying IVF-associated DNA methylation defects, however, remains largely elusive. We reported herein that repression of fibroblast growth factor (FGF) signaling as the main reason for IVF-associated DNA methylation defects. Comparative methylome analysis by postimplantation stage suggested that IVF mouse embryos undergo impaired de novo DNA methylation during implantation stage. Further analyses indicated that Dnmt3b, the main de novo DNA methyltransferase, was consistently inhibited during the transition from the blastocyst to postimplantation stage (Embryonic day 7.5, E7.5). Using blastocysts and embryonic stem cells (ESCs) as the model, we showed repression of FGF signaling is responsible for Dnmt3b inhibition and global hypomethylation during early development, and MEK/ERK-SP1 pathway plays an essential mediating role in FGF signaling-induced transcriptional activation of Dnmt3b. Supplementation of FGF2, which was exclusively produced in the maternal oviduct, into embryo culture medium significantly rescued Dnmt3b inhibition. Our study, using mouse embryos as the model, not only identifies FGF signaling as the main target for correcting IVF-associated epigenetic errors, but also highlights the importance of oviductal paracrine factors in supporting early embryonic development and improving in vitro culture system.
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Affiliation(s)
- Wei Fu
- National Engineering Laboratory for Animal Breeding; Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture; College of Animal Science and Technology, China Agricultural University, No.2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Yuan Yue
- National Engineering Laboratory for Animal Breeding; Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture; College of Animal Science and Technology, China Agricultural University, No.2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Kai Miao
- National Engineering Laboratory for Animal Breeding; Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture; College of Animal Science and Technology, China Agricultural University, No.2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Guangyin Xi
- National Engineering Laboratory for Animal Breeding; Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture; College of Animal Science and Technology, China Agricultural University, No.2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Chao Zhang
- National Engineering Laboratory for Animal Breeding; Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture; College of Animal Science and Technology, China Agricultural University, No.2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Wenjuan Wang
- National Engineering Laboratory for Animal Breeding; Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture; College of Animal Science and Technology, China Agricultural University, No.2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Lei An
- National Engineering Laboratory for Animal Breeding; Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture; College of Animal Science and Technology, China Agricultural University, No.2 Yuanmingyuan West Road, Beijing 100193, P. R. China
| | - Jianhui Tian
- National Engineering Laboratory for Animal Breeding; Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture; College of Animal Science and Technology, China Agricultural University, No.2 Yuanmingyuan West Road, Beijing 100193, P. R. China
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27
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Abstract
The preauricular sinus (PAuS) is a congenital foramen, opening or invagination, usually located on the crus of the auricular helix and is considered a congenital malformation and component of multiple syndromes. The structure can be present unilaterally or bilaterally, with the possibility of more than one fistula present on one ear, predominantly on the auricular tags. As a well-defined and established clinical entry, PAuS has a very strictly laid-out history. However, different works of art give us a glimpse into the structure before its first true clinical description, showing that the PAuS was known to man long before it was first clinically described, such as those of Hieronymous Bosch, with the first medical descriptions being attributed to Heusinger and Virchow. In modern times, the condition is considered both an individual malformation and a component of several genetic syndromes.
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Affiliation(s)
- Boyko Matev
- Medicine, Medical University of Varna, Varna, BGR
| | - Emran Lyutfi
- Medicine, Medical University of Varna, Varna, BGR
| | - George S Stoyanov
- General and Clinical Pathology/Forensic Medicine and Deontology, Medical University of Varna, Varna, BGR
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28
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Argyraki M, Damdimopoulou P, Chatzimeletiou K, Grimbizis GF, Tarlatzis BC, Syrrou M, Lambropoulos A. In-utero stress and mode of conception: impact on regulation of imprinted genes, fetal development and future health. Hum Reprod Update 2020; 25:777-801. [PMID: 31633761 DOI: 10.1093/humupd/dmz025] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 07/04/2019] [Accepted: 07/12/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Genomic imprinting is an epigenetic gene regulatory mechanism; disruption of this process during early embryonic development can have major consequences on both fetal and placental development. The periconceptional period and intrauterine life are crucial for determining long-term susceptibility to diseases. Treatments and procedures in assisted reproductive technologies (ART) and adverse in-utero environments may modify the methylation levels of genomic imprinting regions, including insulin-like growth factor 2 (IGF2)/H19, mesoderm-specific transcript (MEST), and paternally expressed gene 10 (PEG10), affecting the development of the fetus. ART, maternal psychological stress, and gestational exposures to chemicals are common stressors suspected to alter global epigenetic patterns including imprinted genes. OBJECTIVE AND RATIONALE Our objective is to highlight the effect of conception mode and maternal psychological stress on fetal development. Specifically, we monitor fetal programming, regulation of imprinted genes, fetal growth, and long-term disease risk, using the imprinted genes IGF2/H19, MEST, and PEG10 as examples. The possible role of environmental chemicals in genomic imprinting is also discussed. SEARCH METHODS A PubMed search of articles published mostly from 2005 to 2019 was conducted using search terms IGF2/H19, MEST, PEG10, imprinted genes, DNA methylation, gene expression, and imprinting disorders (IDs). Studies focusing on maternal prenatal stress, psychological well-being, environmental chemicals, ART, and placental/fetal development were evaluated and included in this review. OUTCOMES IGF2/H19, MEST, and PEG10 imprinted genes have a broad developmental effect on fetal growth and birth weight variation. Their disruption is linked to pregnancy complications, metabolic disorders, cognitive impairment, and cancer. Adverse early environment has a major impact on the developing fetus, affecting mostly growth, the structure, and subsequent function of the hypothalamic-pituitary-adrenal axis and neurodevelopment. Extensive evidence suggests that the gestational environment has an impact on epigenetic patterns including imprinting, which can lead to adverse long-term outcomes in the offspring. Environmental stressors such as maternal prenatal psychological stress have been found to associate with altered DNA methylation patterns in placenta and to affect fetal development. Studies conducted during the past decades have suggested that ART pregnancies are at a higher risk for a number of complications such as birth defects and IDs. ART procedures involve multiple steps that are conducted during critical windows for imprinting establishment and maintenance, necessitating long-term evaluation of children conceived through ART. Exposure to environmental chemicals can affect placental imprinting and fetal growth both in humans and in experimental animals. Therefore, their role in imprinting should be better elucidated, considering the ubiquitous exposure to these chemicals. WIDER IMPLICATIONS Dysregulation of imprinted genes is a plausible mechanism linking stressors such as maternal psychological stress, conception using ART, and chemical exposures with fetal growth. It is expected that a greater understanding of the role of imprinted genes and their regulation in fetal development will provide insights for clinical prevention and management of growth and IDs. In a broader context, evidence connecting impaired imprinted gene function to common diseases such as cancer is increasing. This implies early regulation of imprinting may enable control of long-term human health, reducing the burden of disease in the population in years to come.
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Affiliation(s)
- Maria Argyraki
- First Department of Obstetrics and Gynecology, Laboratory of Genetics, School of Medicine, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Ring Road, Nea Efkarpia, 56403 Thessaloniki, Greece
| | - Pauliina Damdimopoulou
- Karolinska Institutet, Department of Clinical Sciences, Intervention and Technology, Unit of Obstetrics and Gynecology, K57 Karolinska University Hospital Huddinge, SE-14186 Stockholm, Sweden
| | - Katerina Chatzimeletiou
- First Department of Obstetrics and Gynecology, Unit for Human Reproduction, School of Medicine, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Ring Road, Nea Efkarpia, 56403 Thessaloniki, Greece
| | - Grigoris F Grimbizis
- First Department of Obstetrics and Gynecology, Unit for Human Reproduction, School of Medicine, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Ring Road, Nea Efkarpia, 56403 Thessaloniki, Greece
| | - Basil C Tarlatzis
- First Department of Obstetrics and Gynecology, Unit for Human Reproduction, School of Medicine, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Ring Road, Nea Efkarpia, 56403 Thessaloniki, Greece
| | - Maria Syrrou
- Department of Biology, Laboratory of Biology, School of Health Sciences, University of Ioannina, Dourouti University Campus, 45110, Ioannina, Greece
| | - Alexandros Lambropoulos
- First Department of Obstetrics and Gynecology, Laboratory of Genetics, School of Medicine, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Ring Road, Nea Efkarpia, 56403 Thessaloniki, Greece
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29
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Henningsen AA, Gissler M, Rasmussen S, Opdahl S, Wennerholm UB, Spangmose AL, Tiitinen A, Bergh C, Romundstad LB, Laivuori H, Forman JL, Pinborg A, Lidegaard Ø. Imprinting disorders in children born after ART: a Nordic study from the CoNARTaS group. Hum Reprod 2020; 35:1178-1184. [DOI: 10.1093/humrep/deaa039] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 01/31/2020] [Indexed: 12/18/2022] Open
Abstract
Abstract
STUDY QUESTION:
Is the risk of imprinting disorders increased in children conceived after
SUMMARY ANSWER:
We found an adjusted odds ratio (AOR) of 2.84 [95% CI: 1.34–6.01] for Beckwith–Wiedemann syndrome in ART children, while the risk of Prader–Willi syndrome, Silver–Russell syndrome or Angelman syndrome was not increased in children conceived after ART.
WHAT IS KNOWN ALREADY:
Earlier studies, most of them small, have suggested an association between ART and imprinting disorders.
STUDY DESIGN, SIZE, DURATION:
This was a binational register-based cohort study. All children conceived by ART in Denmark (n = 45 393, born between 1994 and 2014) and in Finland (n = 29 244, born between 1990 and 2014) were identified. The full background populations born during the same time periods in the two countries were included as controls. Odds ratios of imprinting disorders in ART children compared with naturally conceived (NC) children were calculated. The median follow-up time was 8 years and 9 months for ART children and 11 years and 9 months for NC children.
PARTICIPANTS/MATERIALS, SETTING, METHODS:
From the national health registries in Denmark and Finland, we identified all children diagnosed with Prader–Willi syndrome (n = 143), Silver–Russell syndrome (n = 69), Beckwith–Wiedemann syndrome (n = 105) and Angelman syndrome (n = 72) born between 1994/1990 and 2014, respectively.
MAIN RESULTS AND THE ROLE OF CHANCE:
We identified a total of 388 children diagnosed with imprinting disorders; 16 of these were conceived after ART. The overall AOR for the four imprinting disorders in ART children compared with NC children was 1.35 [95% CI: 0.80–2.29], but since eight ART children were diagnosed with Beckwith–Wiedemann syndrome, the AOR for this specific imprinting disorder was 2.84 [95% CI: 1.34–6.01]. The absolute risk of Beckwith–Wiedemann syndrome in children conceived after ART was still low: 10.7 out of 100 000 newborns. The risks of Prader–Willi syndrome, Silver–Russell syndrome and Angelman syndrome were not increased in children conceived after ART.
LIMITATIONS, REASONS FOR CAUTION:
Imprinting disorders are rare events and our results are based on few ART children with imprinting disorders. The aetiology is complex and only partly clarified, and the clinical diagnoses are challenged by a broad phenotypic spectrum.
WIDER IMPLICATIONS OF THE FINDINGS:
In the existing studies, results on the risk of imprinting disorders in children conceived after ART are ambiguous. This study adds that the risk of imprinting disorders in ART children is very small and perhaps restricted to Beckwith–Wiedemann syndrome.
STUDY FUNDING/COMPETING INTEREST(S):
This work was supported by the Nordic Trial Alliance: a pilot project jointly funded by the Nordic Council of Ministers and NordForsk (grant number: 71450), the Nordic Federation of Obstetrics and Gynecology (grant numbers: NF13041, NF15058, NF16026 and NF17043) and the Interreg Öresund-Kattegat-Skagerak European Regional Development Fund (ReproUnion project). The authors have no conflicts of interest related to this work.
TRIAL REGISTRATION NUMBER:
N/A
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Affiliation(s)
- A A Henningsen
- Fertility Clinic, Rigshospitalet, Copenhagen University Hospital, 2100 Copenhagen, Denmark
| | - M Gissler
- Information Services Department, THL Finnish Institute for Health and Welfare, 00270 Helsinki, Finland
- Department of Neurobiology, Care Sciences and Society, Division of Family Medicine, Karolinska Institute, 17177 Stockholm, Sweden
| | - S Rasmussen
- Fertility Clinic, Rigshospitalet, Copenhagen University Hospital, 2100 Copenhagen, Denmark
| | - S Opdahl
- Department of Public Health and Nursing, Norwegian University of Science and Technology, 7491 Trondheim, Norway
| | - U B Wennerholm
- Department of Obstetrics and Gynecology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Sahlgrenska University Hospital, 413 45 Gothenburg, Sweden
| | - A L Spangmose
- Fertility Clinic, Rigshospitalet, Copenhagen University Hospital, 2100 Copenhagen, Denmark
| | - A Tiitinen
- Department of Obstetrics and Gynecology, University of Helsinki, Helsinki University Hospital, 00290 Helsinki, Finland
| | - C Bergh
- Department of Obstetrics and Gynecology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Sahlgrenska University Hospital, 413 45 Gothenburg, Sweden
| | - L B Romundstad
- Department of Public Health and Nursing, Norwegian University of Science and Technology, 7491 Trondheim, Norway
- Spiren Fertility Clinic, 7491 Trondheim, Norway
| | - H Laivuori
- Institute for Molecular Medicine Finland, Helsinki Institute of Life Science, University of Helsinki, 00290 Helsinki, Finland
- Department of Medical and Clinical Genetics, University of Helsinki, Helsinki University Hospital, 00290 Helsinki, Finland
- Department of Obstetrics and Gynecology, Tampere University Hospital and University of Tampere, Faculty of Medicine and Health Technology, 33520 Tampere, Finland
| | - J L Forman
- Department of Biostatistics, University of Copenhagen, 1014 Copenhagen, Denmark
| | - A Pinborg
- Fertility Clinic, Rigshospitalet, Copenhagen University Hospital, 2100 Copenhagen, Denmark
| | - Ø Lidegaard
- Gynecological Clinic, Rigshospitalet, University of Copenhagen, 2100 Copenhagen, Denmark
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30
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Wang R, Xiao Y, Li D, Hu H, Li X, Ge T, Yu R, Wang Y, Zhang T. Clinical and molecular features of children with Beckwith-Wiedemann syndrome in China: a single-center retrospective cohort study. Ital J Pediatr 2020; 46:55. [PMID: 32349794 PMCID: PMC7191772 DOI: 10.1186/s13052-020-0819-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 04/16/2020] [Indexed: 01/20/2023] Open
Abstract
Background Beckwith-Wiedemann syndrome (BWS) is a genetic overgrowth disorder with variable clinical features and cancer predisposition. In this study, we aim to characterize the clinical features and molecular defects of BWS patients in China. Methods Thirty-one patients with clinical suspicion of BWS were retrospectively recruited to the study from Shanghai Children’s Hospital between January 2014 and December 2017. Clinical data, including demographics, clinical features, and molecular testing results were extracted and systematically analyzed. Results Twenty-one patients with a BWS score ≥ 4 (6, IQR 4, 7) were clinically diagnosed with BWS, and 10 children with a BWS score ≥ 2 and < 4 (2, IQR 2, 3) were clinically suspected BWS patients. The most common cardinal feature of clinically diagnosed patients was macroglossia (71.4%) followed by lateralized overgrowth (33.3%) and exomphalos (14.3%), and the major suggestive features were umbilical hernia and/or diastasis recti (65.0%) and ear creases or pits (61.9%). Among 10 clinically suspected BWS patients, macroglossia and lateralized overgrowth were observed in 3 (30%) and 2 (20%) patients, and umbilical hernia and/or diastasis recti occurred in 7 (70.0%) patients. Seven (33.3%) clinically diagnosed patients and 3 (30%) suspected patients were identified with loss of methylation at KCNQ1OT1:TSS differentially methylated region (DMR; IC2 LOM), 5 (23.8%) clinically diagnosed BWS patients were identified with gain of methylation at H19/IGF2:IG-DMR (IC1 GOM), and 1 (4.8%) clinically diagnosed BWS patients was identified with paternal uniparental isodisomy 11 (pUPD11). The phenotype-genotype correlation analysis showed no significant difference among patients with IC2 LOM, IC1 GOM, and pUPD11. Conclusions The current study presents the first cohort study of BWS patients in mainland China. The clinical and molecular features of the patients are similar to those of other reported BWS patients in the Chinese population.
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Affiliation(s)
- Ruixue Wang
- Department of Gastroenterology, Hepatology and Nutrition, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, 200062, China
| | - Yongmei Xiao
- Department of Gastroenterology, Hepatology and Nutrition, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, 200062, China
| | - Dan Li
- Department of Gastroenterology, Hepatology and Nutrition, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, 200062, China
| | - Hui Hu
- Department of Gastroenterology, Hepatology and Nutrition, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, 200062, China
| | - Xiaolu Li
- Department of Gastroenterology, Hepatology and Nutrition, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, 200062, China
| | - Ting Ge
- Department of Gastroenterology, Hepatology and Nutrition, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, 200062, China
| | - Ronghua Yu
- Department of Gastroenterology, Hepatology and Nutrition, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, 200062, China
| | - Yizhong Wang
- Department of Gastroenterology, Hepatology and Nutrition, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, 200062, China.
| | - Ting Zhang
- Department of Gastroenterology, Hepatology and Nutrition, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, 200062, China.
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Kindsfather AJ, Czekalski MA, Pressimone CA, Erisman MP, Mann MRW. Perturbations in imprinted methylation from assisted reproductive technologies but not advanced maternal age in mouse preimplantation embryos. Clin Epigenetics 2019; 11:162. [PMID: 31767035 PMCID: PMC6878706 DOI: 10.1186/s13148-019-0751-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 09/23/2019] [Indexed: 12/19/2022] Open
Abstract
Background Over the last several decades, the average age of first-time mothers has risen steadily. With increasing maternal age comes a decrease in fertility, which in turn has led to an increase in the use of assisted reproductive technologies by these women. Assisted reproductive technologies (ARTs), including superovulation and embryo culture, have been shown separately to alter imprinted DNA methylation maintenance in blastocysts. However, there has been little investigation on the effects of advanced maternal age, with or without ARTs, on genomic imprinting. We hypothesized that ARTs and advanced maternal age, separately and together, alter imprinted methylation in mouse preimplantation embryos. For this study, we examined imprinted methylation at three genes, Snrpn, Kcnq1ot1, and H19, which in humans are linked to ART-associated methylation errors that lead to imprinting disorders. Results Our data showed that imprinted methylation acquisition in oocytes was unaffected by increasing maternal age. Furthermore, imprinted methylation was normally acquired when advanced maternal age was combined with superovulation. Analysis of blastocyst-stage embryos revealed that imprinted methylation maintenance was also not affected by increasing maternal age. In a comparison of ARTs, we observed that the frequency of blastocysts with imprinted methylation loss was similar between the superovulation only and the embryo culture only groups, while the combination of superovulation and embryo culture resulted in a higher frequency of mouse blastocysts with maternal imprinted methylation perturbations than superovulation alone. Finally, the combination of increasing maternal age with ARTs had no additional effect on the frequency of imprinted methylation errors. Conclusion Collectively, increasing maternal age with or without superovulation had no effect of imprinted methylation acquisition at Snrpn, Kcnq1ot1, and H19 in oocytes. Furthermore, during preimplantation development, while ARTs generated perturbations in imprinted methylation maintenance in blastocysts, advanced maternal age did not increase the burden of imprinted methylation errors at Snrpn, Kcnq1ot1, and H19 when combined with ARTs. These results provide cautious optimism that advanced maternal age is not a contributing factor to imprinted methylation errors in embryos produced in the clinic. Furthermore, our data on the effects of ARTs strengthen the need to advance clinical methods to reduce imprinted methylation errors in in vitro-produced embryos.
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Affiliation(s)
- Audrey J Kindsfather
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, 204 Craft Ave, Pittsburgh, PA, 15213, USA.,Magee-Womens Research Institute, 204 Craft Ave, Pittsburgh, PA, 15213, USA
| | - Megan A Czekalski
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, 204 Craft Ave, Pittsburgh, PA, 15213, USA.,Magee-Womens Research Institute, 204 Craft Ave, Pittsburgh, PA, 15213, USA
| | - Catherine A Pressimone
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, 204 Craft Ave, Pittsburgh, PA, 15213, USA.,Magee-Womens Research Institute, 204 Craft Ave, Pittsburgh, PA, 15213, USA
| | - Margaret P Erisman
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, 204 Craft Ave, Pittsburgh, PA, 15213, USA.,Magee-Womens Research Institute, 204 Craft Ave, Pittsburgh, PA, 15213, USA
| | - Mellissa R W Mann
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine, 204 Craft Ave, Pittsburgh, PA, 15213, USA. .,Magee-Womens Research Institute, 204 Craft Ave, Pittsburgh, PA, 15213, USA.
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Duffy KA, Cielo CM, Cohen JL, Gonzalez-Gandolfi CX, Griff JR, Hathaway ER, Kupa J, Taylor JA, Wang KH, Ganguly A, Deardorff MA, Kalish JM. Characterization of the Beckwith-Wiedemann spectrum: Diagnosis and management. AMERICAN JOURNAL OF MEDICAL GENETICS PART C-SEMINARS IN MEDICAL GENETICS 2019; 181:693-708. [PMID: 31469230 DOI: 10.1002/ajmg.c.31740] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 08/09/2019] [Accepted: 08/12/2019] [Indexed: 01/20/2023]
Abstract
Beckwith-Wiedemann syndrome (BWS) is the most common epigenetic overgrowth and cancer predisposition disorder. Due to both varying molecular defects involving chromosome 11p15 and tissue mosaicism, patients can present with a variety of clinical features, leading to the newly defined Beckwith-Wiedemann spectrum (BWSp). The BWSp can be further divided into three subsets of patients: those presenting with classic features, those presenting with isolated lateralized overgrowth (ILO) and those not fitting into the previous two categories, termed atypical BWSp. Previous reports of patients with BWS have focused on those with the more recognizable, classic features, and limited information is available on those who fit into the atypical and ILO categories. Here, we present the first cohort of patients recruited across the entire BWSp, describe clinical features and molecular diagnostic characteristics, and provide insight into practical diagnosis and management recommendations that we have gained from this cohort.
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Affiliation(s)
- Kelly A Duffy
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Christopher M Cielo
- Division of Pulmonary Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jennifer L Cohen
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | | | - Jessica R Griff
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Evan R Hathaway
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Jonida Kupa
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Jesse A Taylor
- Division of Plastic and Reconstructive Surgery, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,Department of Surgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Kathleen H Wang
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Arupa Ganguly
- Department of Genetics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Matthew A Deardorff
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jennifer M Kalish
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania.,Department of Genetics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania.,Center for Childhood Cancer Research, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
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Genomic imprinting disorders: lessons on how genome, epigenome and environment interact. Nat Rev Genet 2019; 20:235-248. [PMID: 30647469 DOI: 10.1038/s41576-018-0092-0] [Citation(s) in RCA: 219] [Impact Index Per Article: 43.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Genomic imprinting, the monoallelic and parent-of-origin-dependent expression of a subset of genes, is required for normal development, and its disruption leads to human disease. Imprinting defects can involve isolated or multilocus epigenetic changes that may have no evident genetic cause, or imprinting disruption can be traced back to alterations of cis-acting elements or trans-acting factors that control the establishment, maintenance and erasure of germline epigenetic imprints. Recent insights into the dynamics of the epigenome, including the effect of environmental factors, suggest that the developmental outcomes and heritability of imprinting disorders are influenced by interactions between the genome, the epigenome and the environment in germ cells and early embryos.
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Choufani S, Turinsky AL, Melamed N, Greenblatt E, Brudno M, Bérard A, Fraser WD, Weksberg R, Trasler J, Monnier P. Impact of assisted reproduction, infertility, sex and paternal factors on the placental DNA methylome. Hum Mol Genet 2019; 28:372-385. [PMID: 30239726 DOI: 10.1093/hmg/ddy321] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 08/29/2018] [Indexed: 12/28/2022] Open
Abstract
Children conceived using Assisted Reproductive Technologies (ART) have a higher incidence of growth and birth defects, attributable in part to epigenetic perturbations. Both ART and germline defects associated with parental infertility could interfere with epigenetic reprogramming events in germ cells or early embryos. Mouse models indicate that the placenta is more susceptible to the induction of epigenetic abnormalities than the embryo, and thus the placental methylome may provide a sensitive indicator of 'at risk' conceptuses. Our goal was to use genome-wide profiling to examine the extent of epigenetic abnormalities in matched placentas from an ART/infertility group and control singleton pregnancies (n = 44/group) from a human prospective longitudinal birth cohort, the Design, Develop, Discover (3D) Study. Principal component analysis revealed a group of ART outliers. The ART outlier group was enriched for females and a subset of placentas showing loss of methylation of several imprinted genes including GNAS, SGCE, KCNQT1OT1 and BLCAP/NNAT. Within the ART group, placentas from pregnancies conceived with in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI) showed distinct epigenetic profiles as compared to those conceived with less invasive procedures (ovulation induction, intrauterine insemination). Male factor infertility and paternal age further differentiated the IVF/ICSI group, suggesting an interaction of infertility and techniques in perturbing the placental epigenome. Together, the results suggest that the human placenta is sensitive to the induction of epigenetic defects by ART and/or infertility, and we stress the importance of considering both sex and paternal factors and that some but not all ART conceptuses will be susceptible.
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Affiliation(s)
- Sanaa Choufani
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Andrei L Turinsky
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada.,Centre for Computational Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Nir Melamed
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynaecology Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Ellen Greenblatt
- Mount Sinai Centre for Fertility and Reproductive Health, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Michael Brudno
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada.,Centre for Computational Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Computer Science, University of Toronto, Toronto, Ontario, Canada
| | - Anick Bérard
- Research Unit on Medications and Pregnancy, Research Centre, CHU Sainte-Justine, and Faculty of Pharmacy, University of Montreal, Montreal, Quebec, Canada
| | - William D Fraser
- Department of Obstetrics and Gynecology, Université de Sherbrooke and Centre de Recherche du CHUS, Sherbrooke, Quebec, Canada
| | - Rosanna Weksberg
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada.,Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, Ontario, Canada.,Department of Pediatrics and Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
| | - Jacquetta Trasler
- Departments of Pediatrics, Human Genetics and Pharmacology & Therapeutics, and The Montreal Children's Hospital and Research Institute of the McGill University Health Centre
| | - Patricia Monnier
- MUHC Reproductive Centre, Department of Obstetrics and Gynecology, Royal Victoria Hospital and Research Institute of McGill University Health Centre, Quebec, Canada
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Brioude F, Toutain A, Giabicani E, Cottereau E, Cormier-Daire V, Netchine I. Overgrowth syndromes - clinical and molecular aspects and tumour risk. Nat Rev Endocrinol 2019; 15:299-311. [PMID: 30842651 DOI: 10.1038/s41574-019-0180-z] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Overgrowth syndromes are a heterogeneous group of rare disorders characterized by generalized or segmental excessive growth commonly associated with additional features, such as visceromegaly, macrocephaly and a large range of various symptoms. These syndromes are caused by either genetic or epigenetic anomalies affecting factors involved in cell proliferation and/or the regulation of epigenetic markers. Some of these conditions are associated with neurological anomalies, such as cognitive impairment or autism. Overgrowth syndromes are frequently associated with an increased risk of cancer (embryonic tumours during infancy or carcinomas during adulthood), but with a highly variable prevalence. Given this risk, syndrome-specific tumour screening protocols have recently been established for some of these conditions. Certain specific clinical traits make it possible to discriminate between different syndromes and orient molecular explorations to determine which molecular tests to conduct, despite the syndromes having overlapping clinical features. Recent advances in molecular techniques using next-generation sequencing approaches have increased the number of patients with an identified molecular defect (especially patients with segmental overgrowth). This Review discusses the clinical and molecular diagnosis, tumour risk and recommendations for tumour screening for the most prevalent generalized and segmental overgrowth syndromes.
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Affiliation(s)
- Frédéric Brioude
- Sorbonne Université, INSERM UMR_S938, Centre de Recherche Saint Antoine, AP-HP Hôpital Trousseau, Paris, France.
| | - Annick Toutain
- CHU de Tours, Hôpital Bretonneau, Service de Génétique, INSERM UMR1253, iBrain, Université de Tours, Faculté de Médecine, Tours, France
| | - Eloise Giabicani
- Sorbonne Université, INSERM UMR_S938, Centre de Recherche Saint Antoine, AP-HP Hôpital Trousseau, Paris, France
| | - Edouard Cottereau
- CHU de Tours, Hôpital Bretonneau, Service de Génétique, Tours, France
| | - Valérie Cormier-Daire
- Service de génétique clinique, Université Paris Descartes-Sorbonne Paris Cité, INSERM UMR1163, Institut Imagine, Hôpital Necker-Enfants Malades, Paris, France
| | - Irene Netchine
- Sorbonne Université, INSERM UMR_S938, Centre de Recherche Saint Antoine, AP-HP Hôpital Trousseau, Paris, France
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Blastocyst culture and transfer in clinically assisted reproduction: a committee opinion. Fertil Steril 2019; 110:1246-1252. [PMID: 30503113 DOI: 10.1016/j.fertnstert.2018.09.011] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 09/13/2018] [Indexed: 11/28/2022]
Abstract
The purposes of this Practice Committee Opinion, which replaces the 2013 ASRM Practice Committee Opinion of the same name (Fertil Steril 2013; 99:667-72), are to review the literature regarding the clinical application of blastocyst transfer and identify the potential risks and laboratory issues related to the use of this technology. This document does not apply to patients undergoing blastocyst culture and transfer for preimplantation genetic testing.
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Affiliation(s)
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- American Society for Reproductive Medicine, Birmingham, Alabama
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- American Society for Reproductive Medicine, Birmingham, Alabama
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Spaan M, van den Belt-Dusebout AW, van den Heuvel-Eibrink MM, Hauptmann M, Lambalk CB, Burger CW, van Leeuwen FE. Risk of cancer in children and young adults conceived by assisted reproductive technology. Hum Reprod 2019; 34:740-750. [PMID: 30715305 PMCID: PMC6443110 DOI: 10.1093/humrep/dey394] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 12/06/2018] [Accepted: 12/22/2018] [Indexed: 11/13/2022] Open
Abstract
STUDY QUESTION Do children conceived by ART have an increased risk of cancer? SUMMARY ANSWER Overall, ART-conceived children do not appear to have an increased risk of cancer. WHAT IS KNOWN ALREADY Despite the increasing use of ART, i.e. IVF or ICSI worldwide, information about possible long-term health risks for children conceived by these techniques is scarce. STUDY DESIGN, SIZE, DURATION A nationwide historical cohort study with prospective follow-up (median 21 years), including all live-born offspring from women treated with subfertility treatments between 1980 and 2001. PARTICIPANTS/MATERIALS, SETTING, METHODS All offspring of a nationwide cohort of subfertile women (OMEGA study) treated in one of the 12 Dutch IVF clinics or two fertility clinics. Of 47 690 live-born children, 24 269 were ART-conceived, 13 761 naturally conceived and 9660 were conceived naturally or through fertility drugs, but not by ART. Information on the conception method of each child and potential confounders were collected through the mothers' questionnaires and medical records. Cancer incidence was ascertained through linkage with The Netherlands Cancer Registry from 1 January 1989 until 1 November 2016. Cancer risk in ART-conceived children was compared with risks in naturally conceived children from subfertile women (hazard ratios [HRs]) and with the general population (standardized incidence ratios [SIRs]). MAIN RESULTS AND THE ROLE OF CHANCE The median follow-up was 21 years (interquartile range (IQR): 17-25) and was shorter in ART-conceived children (20 years, IQR: 17-23) compared with naturally conceived children (24 years, IQR: 20-30). In total, 231 cancers were observed. Overall cancer risk was not increased in ART-conceived children, neither compared with naturally conceived children from subfertile women (HR: 1.00, 95% CI 0.72-1.38) nor compared with the general population (SIR = 1.11, 95% CI: 0.90-1.36). From 18 years of age onwards, the HR of cancer in ART-conceived versus naturally conceived individuals was 1.25 (95% CI: 0.73-2.13). Slightly but non-significantly increased risks were observed in children conceived by ICSI or cryopreservation (HR = 1.52, 95% CI: 0.81-2.85; 1.80, 95% CI: 0.65-4.95, respectively). Risks of lymphoblastic leukemia (HR = 2.44, 95% CI: 0.81-7.37) and melanoma (HR = 1.86, 95% CI: 0.66-5.27) were non-significantly increased for ART-conceived compared with naturally conceived children. LIMITATIONS, REASONS FOR CAUTION Despite the large size and long follow-up of the cohort, the number of cancers was rather small for subgroup analyses as cancer in children and young adults is rare. WIDER IMPLICATIONS OF THE FINDINGS Overall, ART-conceived children do not appear to have an increased cancer risk after a median follow-up of 21 years. This large study provides important results, enabling physicians to better inform couples considering ART about the long-term safety of ART for their children. However, larger studies with prolonged follow-up are needed to investigate cancer risk in adults and in children conceived by ICSI and/or from cryopreserved embryos. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by The Dutch Cancer Society (NKI 2006-3631) which funded the OMEGA-women's cohort and Children Cancer Free (KIKA;147) which funded the OMEGA-offspring cohort. We declare no competing interests.
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Affiliation(s)
- Mandy Spaan
- Department of Epidemiology and Biostatistics, The Netherlands Cancer Institute, Plesmanlaan, Amsterdam, The Netherlands
| | | | | | - Michael Hauptmann
- Department of Epidemiology and Biostatistics, The Netherlands Cancer Institute, Plesmanlaan, Amsterdam, The Netherlands
| | - Cornelis B Lambalk
- Department of Obstetrics & Gynecology, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan, Amsterdam, The Netherlands
| | - Curt W Burger
- Department of Gynecologic Oncology, Erasmus University Medical Center. Wytemaweg, Rotterdam, The Netherlands
| | - Flora E van Leeuwen
- Department of Epidemiology and Biostatistics, The Netherlands Cancer Institute, Plesmanlaan, Amsterdam, The Netherlands
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38
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The effect of light exposure on the cleavage rate and implantation capacity of preimplantation murine embryos. J Reprod Immunol 2019; 132:21-28. [PMID: 30852462 DOI: 10.1016/j.jri.2019.02.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 02/18/2019] [Accepted: 02/22/2019] [Indexed: 11/20/2022]
Abstract
During assisted reproduction the embryos are subjected to light. We investigated the relationship between light exposure and the developmental- and implantation capacity of mouse embryos. In vitro cultured embryos were exposed to white or red filtered light, then transferred to the uteri of pseudo-pregnant females. The mice were sacrificed on day 8.5 and implantation sites were counted. The number of nucleic acid containing (PI+) extracellular vesicles (EVs) in culture media of light-exposed and control embryos, as well as, the effect of the EVs on IL-10 production of CD8+ spleen cells was determined by flow cytometry. DNA fragmentation in control and light exposed embryos was detected in a TUNEL assay. The effect of light on the expression of apoptosis-related molecules was assessed in an apoptosis array. Light exposure significantly reduced the implantation capacity of the embryos. The harmful effect was related to the wavelength, rather than to the brightness of the light. Culture media of light exposed groups contained significantly higher number of PI + EVs than those of the control embryos, and failed to induce IL-10 production of spleen cells. The number of nuclei with fragmented DNA, was significantly higher in embryos treated with white light, than in the other two groups. In conclusion exposure to white light impairs the implantation potential of in vitro cultured mouse embryos. These effects are partly corrected by using a red filter. Since there is no information on the light sensitivity of human embryos, embryo manipulation during IVF and ICSI should be performed with caution.
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Diken E, Linke M, Baumgart J, Eshkind L, Strand D, Strand S, Zechner U. Superovulation Influences Methylation Reprogramming and Delays Onset of DNA Replication in Both Pronuclei of Mouse Zygotes. Cytogenet Genome Res 2018; 156:95-105. [DOI: 10.1159/000493779] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/23/2018] [Indexed: 01/13/2023] Open
Abstract
Although an essential component of assisted reproductive technologies, ovarian stimulation, or superovulation, may interfere with the epigenetic reprogramming machinery during early embryogenesis and gametogenesis. To investigate the possible impact of superovulation particularly on the methylation reprogramming process directly after fertilization, we performed immunofluorescence staining of pronuclear (PN) stage embryos with antibodies against 5mC and 5hmC. PN stage embryos obtained by superovulation displayed an increased incidence of abnormal methylation and hydroxymethylation patterns in both maternal and paternal pronuclear DNA. Subsequent single-cell RT-qPCR analyses of the Tet1, Tet2, and Tet3 genes revealed no significant expression differences between PN stage embryos from spontaneously and superovulated matings that could be causative for the abnormal methylation and hydroxymethylation patterns. To analyze the possible contribution of TET-independent replication-associated demethylation mechanisms, we then determined the 5mC and 5hmC levels of PN stage mouse embryos using immunofluorescence analyses after inhibition of DNA replication with aphidicolin. Inhibition of DNA replication had no effect on abnormal methylation and hydroxymethylation patterns that still persisted in the superovulated group. Interestingly, the onset of DNA replication, which was also analyzed in these experiments, was remarkably delayed in the superovulated group. Our findings imply an impact of superovulation on both replication-dependent and -independent or yet unknown demethylation mechanisms in PN stage mouse embryos. In addition, they reveal for the first time a negative effect of superovulation on the initiation of DNA replication in PN stage mouse embryos.
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Hamad MF, Dayyih WAA, Laqqan M, AlKhaled Y, Montenarh M, Hammadeh ME. The status of global DNA methylation in the spermatozoa of smokers and non-smokers. Reprod Biomed Online 2018; 37:581-589. [PMID: 30366840 DOI: 10.1016/j.rbmo.2018.08.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 08/28/2018] [Accepted: 08/29/2018] [Indexed: 01/06/2023]
Abstract
RESEARCH QUESTION Does regular smoking affect semen quality and the levels of DNA methylation in mature human spermatozoa? DESIGN Spermatozoa from 109 men were evaluated (55 smokers and 54 non-smokers). DNA was extracted from purified spermatozoa, and DNA methylation was quantified by enzyme-linked immunosorbent assay (ELISA). RESULTS Global DNA methylation of non-smokers is significantly lower (P < 0.001) than that of smokers (4.85 ± 2.72 and 7.08 ± 1.77 ng/μl, respectively). Moreover, the mean global DNA methylation levels were significantly correlated (r = 0.22;P = 0.02) with non-condensed chromatin in the spermatozoa. Levels of non-condensed chromatin were significantly higher (P < 0.001) in smokers (29.75 ± 9.38%) compared with non-smokers (20.96 ± 11.31%). Furthermore, global sperm DNA methylation was negatively correlated with high significance (P < 0.010) with sperm: count (r = -0.27), motility (r = -0.30) and vitality (r = -0.26). CONCLUSION Smoking interferes with DNA methylation. Also, DNA methylation is significantly correlated with sperm parameters and sperm non-condensed chromatin. These data emphasize another detrimental effect of smoking on male fertility. DNA methylation may, therefore, be considered as a fertility marker in men.
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Affiliation(s)
- Mohammed F Hamad
- Department of Basic Sciences, College of Science and Health Professions, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia; IVF and Andrology Laboratory, Department of Obstetrics and Gynaecology, Saarland University Hospital, Building 9, Homburg/Saar 66424, Germany; Department of Medical Biochemistry and Molecular Biology, Saarland University, Building 44, 66424, Homburg/Saar, Germany.
| | - Wael A Abu Dayyih
- Department of Pharmaceutical Medicinal Chemistry and Pharmacognosy, Faculty of Pharmacy and Medical Sciences, University of Petra, Amman, Jordan
| | - Mohammad Laqqan
- IVF and Andrology Laboratory, Department of Obstetrics and Gynaecology, Saarland University Hospital, Building 9, Homburg/Saar 66424, Germany
| | - Yasir AlKhaled
- IVF and Andrology Laboratory, Department of Obstetrics and Gynaecology, Saarland University Hospital, Building 9, Homburg/Saar 66424, Germany
| | - Mathias Montenarh
- Department of Medical Biochemistry and Molecular Biology, Saarland University, Building 44, 66424, Homburg/Saar, Germany
| | - Mohammed E Hammadeh
- IVF and Andrology Laboratory, Department of Obstetrics and Gynaecology, Saarland University Hospital, Building 9, Homburg/Saar 66424, Germany
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Zhao J, Yan Y, Huang X, Li Y. Do the children born after assisted reproductive technology have an increased risk of birth defects? A systematic review and meta-analysis. J Matern Fetal Neonatal Med 2018; 33:322-333. [PMID: 30189770 DOI: 10.1080/14767058.2018.1488168] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Background: Assisted reproductive technologies (ARTs) have made great progress. However, whether tube baby born after ART were at an increased risk of birth defects is not clear.Objective: To assess whether the ART increases the risk of birth defects in children born after ART.Search strategy: Medline, Google Scholar, and the Cochrane Library were searched.Selection criteria: Clinical trials that evaluate the risk of birth defect in children born after in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI) and natural conceptions (NC) were included. The primary outcome was the prevalence of birth defects.Data collection and analysis: The relative risk was used as the summary measure with random effects model. We assessed heterogeneity between studies using the I2 index.Main results: Totally 46 studies were included. The pooled relative risk (RR) estimated suggested there was an increased risk of birth defects in ART compared with the NC group (RR: 1.40; 95% CI 1.31-1.49). Twenty and fifteen studies were included to compare the risk of birth defects between NC and IVF/ICSI, respectively. The results indicated that both IVF and ICSI increase the risk of birth defects (IVF: RR 1.25; 95% CI 1.12-1.40; ICSI: RR 1.29; 95% CI 1.14-1.45). When subgroup according to plurality, 22 studies assessed the risk of birth defects after ART or NC in singletons and 15 studies evaluated the risk of birth defects in twins. The pooled RRs were 1.41 (95% CI 1.30-1.52) and 1.18 (95% CI 0.98-1.42), respectively.Conclusions: Children born after ART were at an increased risk of birth defects compared with NC. There was no difference in birth defects risk between ART twins and NC twins.
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Affiliation(s)
- Jing Zhao
- Reproductive Medicine Center, Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China
| | - Yi Yan
- Reproductive Medicine Center, Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China
| | - Xi Huang
- Reproductive Medicine Center, Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China
| | - Yanping Li
- Reproductive Medicine Center, Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China
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Dagar V, Hutchison W, Muscat A, Krishnan A, Hoke D, Buckle A, Siswara P, Amor DJ, Mann J, Pinner J, Colley A, Wilson M, Sachdev R, McGillivray G, Edwards M, Kirk E, Collins F, Jones K, Taylor J, Hayes I, Thompson E, Barnett C, Haan E, Freckmann ML, Turner A, White S, Kamien B, Ma A, Mackenzie F, Baynam G, Kiraly-Borri C, Field M, Dudding-Byth T, Algar EM. Genetic variation affecting DNA methylation and the human imprinting disorder, Beckwith-Wiedemann syndrome. Clin Epigenetics 2018; 10:114. [PMID: 30165906 PMCID: PMC6117921 DOI: 10.1186/s13148-018-0546-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 08/17/2018] [Indexed: 11/24/2022] Open
Abstract
Background Beckwith-Wiedemann syndrome (BWS) is an imprinting disorder with a population frequency of approximately 1 in 10,000. The most common epigenetic defect in BWS is a loss of methylation (LOM) at the 11p15.5 imprinting centre, KCNQ1OT1 TSS-DMR, and affects 50% of cases. We hypothesised that genetic factors linked to folate metabolism may play a role in BWS predisposition via effects on methylation maintenance at KCNQ1OT1 TSS-DMR. Results Single nucleotide variants (SNVs) in the folate pathway affecting methylenetetrahydrofolate reductase (MTHFR), methionine synthase reductase (MTRR), 5-methyltetrahydrofolate-homocysteine S-methyltransferase (MTR), cystathionine beta-synthase (CBS) and methionine adenosyltransferase (MAT1A) were examined in 55 BWS patients with KCNQ1OT1 TSS-DMR LOM and in 100 unaffected cases. MTHFR rs1801133: C>T was more prevalent in BWS with KCNQ1OT1 TSS-DMR LOM (p < 0.017); however, the relationship was not significant when the Bonferroni correction for multiple testing was applied (significance, p = 0.0036). None of the remaining 13 SNVs were significantly different in the two populations tested. The DNMT1 locus was screened in 53 BWS cases, and three rare missense variants were identified in each of three patients: rs138841970: C>T, rs150331990: A>G and rs757460628: G>A encoding NP_001124295 p.Arg136Cys, p.His1118Arg and p.Arg1223His, respectively. These variants have population frequencies of less than 1 in 1000 and were absent from 100 control cases. Functional characterization using a hemimethylated DNA trapping assay revealed a reduced methyltransferase activity relative to wild-type DNMT1 for each variant ranging from 40 to 70% reduction in activity. Conclusions This study is the first to examine folate pathway genetics in BWS and to identify rare DNMT1 missense variants in affected individuals. Our data suggests that reduced DNMT1 activity could affect maintenance of methylation at KCNQ1OT1 TSS-DMR in some cases of BWS, possibly via a maternal effect in the early embryo. Larger cohort studies are warranted to further interrogate the relationship between impaired MTHFR enzymatic activity attributable to MTHFR rs1801133: C>T, dietary folate intake and BWS. Electronic supplementary material The online version of this article (10.1186/s13148-018-0546-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Vinod Dagar
- Department of Paediatrics, University of Melbourne, Parkville, 3052, Australia
| | | | - Andrea Muscat
- School of Medicine, Deakin University, Geelong, 3216, Australia
| | - Anita Krishnan
- Victorian Comprehensive Cancer Centre, Parkville, 3052, Australia
| | - David Hoke
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, 3800, Australia
| | - Ashley Buckle
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, 3800, Australia
| | | | - David J Amor
- Department of Paediatrics, University of Melbourne, Parkville, 3052, Australia.,Murdoch Children's Research Institute, Parkville, 3052, Australia
| | - Jeffrey Mann
- Department of Anatomy and Developmental Biology, Monash University, Clayton, 3800, Australia
| | - Jason Pinner
- Department of Medical Genomics, Royal Prince Alfred Hospital, Camperdown, 2050, Australia
| | - Alison Colley
- Clinical Genetics, Liverpool Hospital, Liverpool, 2170, Australia
| | - Meredith Wilson
- Clinical Genetics, Children's Hospital at Westmead, Westmead, 2145, Australia
| | - Rani Sachdev
- Centre for Clinical Genetics, Sydney Children's Hospital, Randwick, 2031, Australia
| | | | - Matthew Edwards
- School of Medicine, University of Western Sydney, Penrith, 2751, Australia
| | - Edwin Kirk
- Centre for Clinical Genetics, Sydney Children's Hospital, Randwick, 2031, Australia
| | - Felicity Collins
- Clinical Genetics, Children's Hospital at Westmead, Westmead, 2145, Australia
| | - Kristi Jones
- Clinical Genetics, Children's Hospital at Westmead, Westmead, 2145, Australia.,School of Medicine, University of Sydney, Camperdown, 2006, Australia
| | - Juliet Taylor
- Auckland District Health Board, Auckland, 1023, New Zealand
| | - Ian Hayes
- Auckland District Health Board, Auckland, 1023, New Zealand
| | - Elizabeth Thompson
- South Australian (SA) Clinical Genetics Service, SA Pathology, Women's and Children's Hospital, Adelaide, 5000, Australia.,School of Medicine, University of Adelaide, Adelaide, 5000, Australia
| | - Christopher Barnett
- South Australian (SA) Clinical Genetics Service, SA Pathology, Women's and Children's Hospital, Adelaide, 5000, Australia
| | - Eric Haan
- South Australian (SA) Clinical Genetics Service, SA Pathology, Women's and Children's Hospital, Adelaide, 5000, Australia
| | - Mary-Louise Freckmann
- Department of Clinical Genetics, Royal North Shore Hospital, St Leonards, 2065, Australia
| | - Anne Turner
- Centre for Clinical Genetics, Sydney Children's Hospital, Randwick, 2031, Australia.,School of Women's and Children's Health, University of NSW, Kensington, 2052, Australia
| | - Susan White
- Murdoch Children's Research Institute, Parkville, 3052, Australia
| | - Ben Kamien
- Hunter Genetics, Hunter New England Local Health District, New Lambton, 2305, Australia
| | - Alan Ma
- Clinical Genetics, Children's Hospital at Westmead, Westmead, 2145, Australia
| | - Fiona Mackenzie
- Genetics Services of Western Australia, Crawley, 6009, Australia
| | - Gareth Baynam
- Genetics Services of Western Australia, Crawley, 6009, Australia
| | | | - Michael Field
- Hunter Genetics, Hunter New England Local Health District, New Lambton, 2305, Australia
| | - Tracey Dudding-Byth
- Hunter Genetics, Hunter New England Local Health District, New Lambton, 2305, Australia.,University of Newcastle GrowUpWell Priority Research Centre, Callaghan, 2308, Australia
| | - Elizabeth M Algar
- Department of Paediatrics, University of Melbourne, Parkville, 3052, Australia. .,Pathology, Monash Health, Clayton, 3168, Australia. .,Hudson Institute of Medical Research, Clayton, 3168, Australia. .,Department of Translational Medicine, Monash University, Clayton, 3168, Australia.
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Johnson JP, Beischel L, Schwanke C, Styren K, Crunk A, Schoof J, Elias AF. Overrepresentation of pregnancies conceived by artificial reproductive technology in prenatally identified fetuses with Beckwith-Wiedemann syndrome. J Assist Reprod Genet 2018; 35:985-992. [PMID: 29936652 DOI: 10.1007/s10815-018-1228-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 05/28/2018] [Indexed: 01/09/2023] Open
Abstract
OBJECTIVES In vitro fertilization (IVF) has been linked to an increased risk for imprinting disorders in offspring. The data so far have predominantly been retrospective, comparing the rate of IVF conceptions in affected patients with controls. We describe a series of fetuses with omphalocele that were tested for Beckwith-Wiedemann syndrome (BWS) and subsequently ascertained as to whether pregnancies were conceived by assisted reproductive technologies (ART). METHODS Fetuses were tested for BWS by Southern blot, PCR based methods, and methylation analysis to identify the imprinting status at primarily the IC2 locus, KCNQ1OT1, as well as IC1, H19/IGF-2. Some fetuses were also tested for uniparental disomy of chromosome 11p. RESULTS We tested 301 fetuses with omphalocele for BWS. Forty samples were positive. Sixteen were from IVF pregnancies, for an overall rate of 40%. Such as high proportion of IVF pregnancies in a series of BWS-positive fetuses has not been described previously. Possible factors such as twinning and ascertainment bias are discussed. CONCLUSION We found about a 20-fold overrepresentation of IVF cases in fetuses with BWS/omphalocele when compared with the rate of ART pregnancies in the USA (p < .0001). Our series provides support for an association of IVF and BWS. Patients should be counseled about these risks and made aware of the availability of prenatal diagnosis for detection.
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Affiliation(s)
- John P Johnson
- Department of Medical Genetics, Shodair Children's Hospital, PO Box 5539, Helena, MT, 59604-5539, USA
| | - Linda Beischel
- Montana Department of Public Health and Human Services, Helena, MT, USA
| | - Corbin Schwanke
- Department of Medical Genetics, Shodair Children's Hospital, PO Box 5539, Helena, MT, 59604-5539, USA
| | - Katie Styren
- Department of Medical Genetics, Shodair Children's Hospital, PO Box 5539, Helena, MT, 59604-5539, USA
| | | | - Jonathan Schoof
- Department of Medical Genetics, Shodair Children's Hospital, PO Box 5539, Helena, MT, 59604-5539, USA
| | - Abdallah F Elias
- Department of Medical Genetics, Shodair Children's Hospital, PO Box 5539, Helena, MT, 59604-5539, USA.
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44
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Marjonen H, Auvinen P, Kahila H, Tšuiko O, Kõks S, Tiirats A, Viltrop T, Tuuri T, Söderström-Anttila V, Suikkari AM, Salumets A, Tiitinen A, Kaminen-Ahola N. rs10732516 polymorphism at the IGF2/H19 locus associates with genotype-specific effects on placental DNA methylation and birth weight of newborns conceived by assisted reproductive technology. Clin Epigenetics 2018; 10:80. [PMID: 29946374 PMCID: PMC6006593 DOI: 10.1186/s13148-018-0511-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 06/01/2018] [Indexed: 11/10/2022] Open
Abstract
Background Assisted reproductive technology (ART) has been associated with low birth weight of fresh embryo transfer (FRESH) derived and increased birth weight of frozen embryo transfer (FET)-derived newborns. Owing to that, we focused on imprinted insulin-like growth factor 2 (IGF2)/H19 locus known to be important for normal growth. This locus is regulated by H19 imprinting control region (ICR) with seven binding sites for the methylation-sensitive zinc finger regulatory protein (CTCF). A polymorphism rs10732516 G/A in the sixth binding site for CTCF, associates with a genotype-specific trend to the DNA methylation. Due to this association, 62 couples with singleton pregnancies derived from FRESH (44 IVF/18 ICSI), 24 couples from FET (15 IVF/9 ICSI), and 157 couples with spontaneously conceived pregnancies as controls were recruited in Finland and Estonia for genotype-specific examination. DNA methylation levels at the H19 ICR, H19 DMR, and long interspersed nuclear elements in placental tissue were explored by MassARRAY EpiTYPER (n = 122). Allele-specific changes in the methylation level of H19 ICR in placental tissue (n = 26) and white blood cells (WBC, n = 8) were examined by bisulfite sequencing. Newborns' (n = 243) anthropometrics was analyzed by using international growth standards. Results A consistent trend of genotype-specific decreased methylation level was observed in paternal allele of rs10732516 paternal A/maternal G genotype, but not in paternal G/maternal A genotype, at H19 ICR in ART placentas. This hypomethylation was not detected in WBCs. Also genotype-specific differences in FRESH-derived newborns' birth weight and head circumference were observed (P = 0.04, P = 0.004, respectively): FRESH-derived newborns with G/G genotype were heavier (P = 0.04) and had larger head circumference (P = 0.002) compared to newborns with A/A genotype. Also, the placental weight and birth weight of controls, FRESH- and FET-derived newborns differed significantly in rs10732516 A/A genotype (P = 0.024, P = 0.006, respectively): the placentas and newborns of FET-derived pregnancies were heavier compared to FRESH-derived pregnancies (P = 0.02, P = 0.004, respectively). Conclusions The observed DNA methylation changes together with the phenotypic findings suggest that rs10732516 polymorphism associates with the effects of ART in a parent-of-origin manner. Therefore, this polymorphism should be considered when the effects of environmental factors on embryonic development are studied.
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Affiliation(s)
- Heidi Marjonen
- Department of Medical and Clinical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Pauliina Auvinen
- Department of Medical and Clinical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Hanna Kahila
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Olga Tšuiko
- Department of Biomedicine, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
- Competence Centre on Health Technologies, Tartu, Estonia
| | - Sulev Kõks
- Department of Pathophysiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
- Department of Reproductive Biology, Estonian University of Life Sciences, Tartu, Estonia
| | - Airi Tiirats
- Department of Obstetrics and Gynaecology, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
- Department of Paediatric ICU, Tartu University Hospital, Tartu, Estonia
| | - Triin Viltrop
- Department of Biomedicine, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Timo Tuuri
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Viveca Söderström-Anttila
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- The Family Federation of Finland, Fertility Clinic, Helsinki, Finland
| | | | - Andres Salumets
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Department of Biomedicine, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
- Competence Centre on Health Technologies, Tartu, Estonia
- Department of Obstetrics and Gynaecology, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
| | - Aila Tiitinen
- Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Nina Kaminen-Ahola
- Department of Medical and Clinical Genetics, Medicum, University of Helsinki, Helsinki, Finland
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45
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Barisic I, Boban L, Akhmedzhanova D, Bergman JEH, Cavero-Carbonell C, Grinfelde I, Materna-Kiryluk A, Latos-Bieleńska A, Randrianaivo H, Zymak-Zakutnya N, Sansovic I, Lanzoni M, Morris JK. Beckwith Wiedemann syndrome: A population-based study on prevalence, prenatal diagnosis, associated anomalies and survival in Europe. Eur J Med Genet 2018; 61:499-507. [PMID: 29753922 DOI: 10.1016/j.ejmg.2018.05.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 05/08/2018] [Indexed: 12/13/2022]
Abstract
Beckwith Wiedemann syndrome is a complex developmental disorder characterized by somatic overgrowth, macroglossia, abdominal wall defects, neonatal hypoglycemia, and predisposition to embryonal tumors. We present epidemiological and clinical aspects of patients with Beckwith Wiedemann syndrome diagnosed prenatally or in the early years of life, using data from EUROCAT (European Surveillance of Congenital Anomalies) registries. The study population consisted of 371 cases identified between January 1990 and December 2015 in 34 registries from 16 European countries. There were 15 (4.0%) terminations of pregnancy after prenatal detection of severe anomaly/anomalies, 10 fetal deaths (2.7%), and 346 (93.3%) live-births. Twelve (3.6%) of the 330 live-births with available information on survival died in the first week of life, of those eleven (91.6%) were preterm. First-year survival rate was 90.9%. Prematurity was present in 40.6% of males and 33.9% of females. Macrosomia was found in 49.2% and 43.3% of preterm males and females, respectively. Of term newborns, 41.1% of males and 24% of females were macrosomic. Out of 353 cases with known time of diagnosis, 39.9% were suspected prenatally, 36.3% at birth, 7.6% were diagnosed in the first week of life, and 16.2% in the first year of life. The mean gestational age at prenatal diagnosis by obstetric ultrasound was 19.8 ± 6.2 (11-39) gestational weeks. The mean prenatal diagnosis of cases where parents opted for termination of pregnancy was 15.3 ± 2.4 (11-22) gestational weeks, and the mean gestational age at termination was 19.3 ± 4.1 (13-26) gestational weeks. The prenatal detection rate was 64.1% (141/220) with no significant change over time. There were 12.7% of familial cases. The study confirmed the association of assisted reproductive technologies with Beckwith Wiedemann syndrome, as 7.2% (13/181) of patients were conceived by one of the methods of assisted reproductive technologies, which was three times higher compared to the general population of the countries included in the study. Twin pregnancies of undetermined zygosity were recorded in 5.7% (21/365) cases, and were on average three to four times more common than in European countries that participated in the study. The estimated mean prevalence of classical Beckwith Wiedemann syndrome in Europe was 3.8 per 100,000 births or 1:26,000 births.
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Affiliation(s)
- Ingeborg Barisic
- Department of Medical Genetics and Reproductive Health, Children's Hospital Zagreb, School of Medicine, University of Zagreb, Zagreb, Croatia.
| | - Ljubica Boban
- Department of Medical Genetics and Reproductive Health, Children's Hospital Zagreb, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Diana Akhmedzhanova
- OMNI-Net Ukraine and Khmelnytsky City Perinatal Center, Khmelnytsky, Ukraine
| | - Jorieke E H Bergman
- Department of Genetics, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Clara Cavero-Carbonell
- Rare Diseases Research Unit, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, Valencia, Spain
| | - Ieva Grinfelde
- Medical Genetics and Prenatal Diagnosis Clinic, Children's University Hospital, Riga, Latvia
| | - Anna Materna-Kiryluk
- Department of Medical Genetics, Poznan University of Medical Sciences and Center for Medical Genetics GENESIS, Poznan, Poland
| | - Anna Latos-Bieleńska
- Department of Medical Genetics, Poznan University of Medical Sciences and Center for Medical Genetics GENESIS, Poznan, Poland
| | - Hanitra Randrianaivo
- Registre des Malformations Congenitales de la Reunion, St Pierre, Ile de la Reunion, France
| | | | - Ivona Sansovic
- Department of Medical Genetics and Reproductive Health, Children's Hospital Zagreb, School of Medicine, University of Zagreb, Zagreb, Croatia
| | - Monica Lanzoni
- European Commission, DG Joint Research Centre, Ispra, Italy
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46
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El Hajj N, Haertle L, Dittrich M, Denk S, Lehnen H, Hahn T, Schorsch M, Haaf T. DNA methylation signatures in cord blood of ICSI children. Hum Reprod 2018; 32:1761-1769. [PMID: 28575352 PMCID: PMC5850272 DOI: 10.1093/humrep/dex209] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 05/15/2017] [Indexed: 12/12/2022] Open
Abstract
STUDY QUESTION Does ICSI induce specific DNA methylation changes in the resulting offspring? SUMMARY ANSWER Although several thousand analyzed CpG sites (throughout the genome) displayed significant between-group methylation differences, both ICSI and spontaneously conceived children varied within the normal range of methylation variation. WHAT IS KNOWN ALREADY Children conceived by ART have increased risks for medical problems at birth and to the extent of present knowledge also in later life (i.e. impaired metabolic and cardiovascular functions). One plausible mechanism mediating these ART effects are epigenetic changes originating in the germ cells and/or early embryos and persisting during further development. STUDY DESIGN, SIZE, DURATION We compared the cord blood methylomes and candidate gene methylation patterns of newborns conceived through ICSI or spontaneously. PARTICIPANTS/MATERIALS, SETTING, METHODS Umbilical cord bloods were obtained from healthy newborn singletons conceived spontaneously (53 samples), through ICSI (89) or IVF (34). Bisulfite-converted DNA samples of 48 ICSI and 46 control pregnancies were used for genome-wide analyses with Illumina's 450K methylation arrays. Candidate genes from the methylation screen were analyzed in all three groups by bisulfite pyrosequencing. MAIN RESULTS AND THE ROLE OF CHANCE Altogether, 4730 (0.11%) of 428 227 analyzed CpG sites exhibited significant between-group methylation differences, but all with small (β < 10%) or very small (β < 1%) effect size. ICSI children showed a significantly decreased DNA methylation age at birth, lagging approximately half a week behind the controls. ART-susceptible CpGs were enriched in CpG islands with low methylation values (0-20%) and in imprinting control regions (ICRs). Eighteen promoter regions (six in microRNA and SNORD RNA genes), four CpG islands (three in genes including one long non-coding RNA), and two ICRs contained multiple significant sites. Three differentially methylated regions were studied in more detail by bisulfite pyrosequencing. ATG4C and SNORD114-9 could be validated in an independent ICSI group, following adjustment for maternal age and other confounding factors. ATG4C was also significant in the IVF group. LARGE SCALE DATA N/A. LIMITATIONS, REASONS FOR CAUTION The observed epigenetic effects are small and there are numerous potential confounding factors such as parental age and infertility. Although our study meets current standards for epigenetic screens, sample size is still two orders of magnitude below that of genome-wide association studies. WIDER IMPLICATIONS OF THE FINDINGS Our study suggests an impact of ICSI on the offspring's epigenome(s), which may contribute to phenotypic variation and disease susceptibility in ART children. Epigenetic regulation of gene expression by different classes of non-coding RNAs may be a key mechanism for developmental programming through ART. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by a research grant (no. 692185) from the European Union (ERA of ART). There are no competing interests.
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Affiliation(s)
- Nady El Hajj
- Institute of Human Genetics, Julius Maximilians University, 97074 Würzburg, Germany
| | - Larissa Haertle
- Institute of Human Genetics, Julius Maximilians University, 97074 Würzburg, Germany
| | - Marcus Dittrich
- Institute of Human Genetics, Julius Maximilians University, 97074 Würzburg, Germany.,Department of Bioinformatics, Julius Maximilians University, 97074 Würzburg, Germany
| | - Sarah Denk
- Institute of Human Genetics, Julius Maximilians University, 97074 Würzburg, Germany
| | - Harald Lehnen
- Department of Gynecology and Obstetrics, Municipal Clinics, Hubertusstrasse 100, 41239 Mönchengladbach, Germany
| | - Thomas Hahn
- Fertility Center, Mainzer Strasse 98-102, 65189 Wiesbaden, Germany
| | - Martin Schorsch
- Fertility Center, Mainzer Strasse 98-102, 65189 Wiesbaden, Germany
| | - Thomas Haaf
- Institute of Human Genetics, Julius Maximilians University, 97074 Würzburg, Germany
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47
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Peng H, Zhao P, Liu J, Zhang J, Zhang J, Wang Y, Wu L, Song M, Wang W. Novel Epigenomic Biomarkers of Male Infertility Identified by Methylation Patterns of CpG Sites Within Imprinting Control Regions of H19 and SNRPN Genes. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2018; 22:354-364. [PMID: 29708855 DOI: 10.1089/omi.2018.0019] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Male infertility is an important global health burden that can benefit from novel biomarkers and diagnostics innovation. Aberrant methylation of the imprinted genes H19 and SNRPN (small nuclear ribonucleoprotein polypeptide N) in sperm DNA has been implicated in abnormal sperm parameters and male infertility. However, whether certain methylation patterns of one or multiple CpG sites within an imprinted gene are pathological for multiple sperm defects remains poorly understood. To examine the diagnostic potential of certain methylation patterns of CpG sites for multiphenotype defects in human sperm, the sperm DNA methylation patterns of individual CpG sites within imprinting control regions (ICRs) of imprinted genes H19 and SNRPN were measured by bisulfite pyrosequencing in a Han Chinese population sample: 39 oligoasthenozoospermia (OA) patients, 36 asthenoteratozoospermia (AT) patients, and 50 normozoospermia (N) controls. A partial least squares discriminant analysis model was built with the CpG sites as independent variables. Among the 16 CpG sites screened, the methylation patterns of eight CpG sites within H19-ICR (CpG sites 1, 6-9, 12 and 15-16), and eight CpG sites within SNRPN-ICR (CpG sites 2, 5-6, 8-10, 13, and 16) correctly classified 74.4% and 72.0% of the samples in terms of male fertile status, respectively. Furthermore, by combination of these 16 selected CpG sites within ICRs of H19 and SNRPN, 88.0% of the samples could be successfully classified. Our study demonstrates that methylation profiles of CpG sites within ICRs of imprinted genes H19 and SNRPN may potentially serve as epigenomic biomarkers for assessment of infertility in men with multiple sperm defects. Further studies in independent population samples are called for diagnostic significance of methylation patterns of CpG sites within imprinted genes.
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Affiliation(s)
- Hongli Peng
- 1 School of Public Health, Capital Medical University , Beijing, China .,2 Municipal Key Laboratory of Clinical Epidemiology , Beijing, China
| | - Panlin Zhao
- 3 Air Force General Hospital , PLA, Beijing, China
| | - Jiaonan Liu
- 1 School of Public Health, Capital Medical University , Beijing, China .,2 Municipal Key Laboratory of Clinical Epidemiology , Beijing, China
| | - Jinxia Zhang
- 1 School of Public Health, Capital Medical University , Beijing, China .,2 Municipal Key Laboratory of Clinical Epidemiology , Beijing, China
| | - Jie Zhang
- 1 School of Public Health, Capital Medical University , Beijing, China .,2 Municipal Key Laboratory of Clinical Epidemiology , Beijing, China
| | - Youxin Wang
- 1 School of Public Health, Capital Medical University , Beijing, China .,2 Municipal Key Laboratory of Clinical Epidemiology , Beijing, China
| | - Lijuan Wu
- 1 School of Public Health, Capital Medical University , Beijing, China .,2 Municipal Key Laboratory of Clinical Epidemiology , Beijing, China
| | - Manshu Song
- 1 School of Public Health, Capital Medical University , Beijing, China .,2 Municipal Key Laboratory of Clinical Epidemiology , Beijing, China .,4 School of Medical and Health Sciences, Edith Cowan University , Perth, Australia
| | - Wei Wang
- 1 School of Public Health, Capital Medical University , Beijing, China .,2 Municipal Key Laboratory of Clinical Epidemiology , Beijing, China .,4 School of Medical and Health Sciences, Edith Cowan University , Perth, Australia .,5 School of Public Health, Taishan Medical University , Taian, China
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48
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Koscinski I, Merten M, Kazdar N, Guéant JL. [Culture conditions for gametes and embryos: Which culture medium? Which impact on newborn?]. ACTA ACUST UNITED AC 2018; 46:474-480. [PMID: 29709567 DOI: 10.1016/j.gofs.2018.03.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Indexed: 10/17/2022]
Abstract
Many studies have examined the impact of cell/embryo culture media on the development of human embryo during IVF process, but few studies have followed up and compared the effects of these culture media on the developmental outcome of children conceived by IVF. As recurrent experimental evidence from animal studies suggests potential long-term effects of embryo culture media on the health outcome of IVF-conceived children, more studies are needed to clarify the role of the culture media and mechanisms underlying such effects. In human, however, the effects of culture media are difficult to pinpoint due to complications stem from both the influence of maternal nutrition during the gestational period and the parental genetic. Based on a simple review of the literature integrating animal experimentations and human clinic studies, we suggest that the composition of culture medium should be considered beyond the character of unique or sequential medium, corresponding to "let embryo choose" or "back to nature" respectively. Instead, we suggest that the main components of embryo culture media should be considered from the point of view of metabolic consequences and potential epigenetic effects. Given that energetic metabolites can regulate epigenetic machinery, we hypothesize that metabolic abnormalities linked to morphological abnormalities could reveal epigenetic defects in embryos.
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Affiliation(s)
- I Koscinski
- Laboratoire de biologie de la reproduction, CHRU de Nancy, 10, rue du Dr-Heydenreich, 54000 Nancy, France; Unité Inserm 954 N-GERE, 9, avenue de la Forêt-de-Hayes, CS 5018, 54505 Vandœuvre-lès-Nancy, France.
| | - M Merten
- Unité Inserm 954 N-GERE, 9, avenue de la Forêt-de-Hayes, CS 5018, 54505 Vandœuvre-lès-Nancy, France; Laboratoire de biochimie, CHRU de Nancy, rue du Morvan, 54511 Vandœuvre-lès-Nancy, France
| | - N Kazdar
- Laboratoire Eylau-Unilabs, clinique Pierre-Cherest, 5, rue Pierre-Cherest, 92200 Neuilly-sur-Seine, France
| | - J-L Guéant
- Unité Inserm 954 N-GERE, 9, avenue de la Forêt-de-Hayes, CS 5018, 54505 Vandœuvre-lès-Nancy, France; Laboratoire de biochimie, CHRU de Nancy, rue du Morvan, 54511 Vandœuvre-lès-Nancy, France
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49
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Comprehensive meta-analysis reveals association between multiple imprinting disorders and conception by assisted reproductive technology. J Assist Reprod Genet 2018; 35:943-952. [PMID: 29696471 DOI: 10.1007/s10815-018-1173-x] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 03/23/2018] [Indexed: 10/17/2022] Open
Abstract
PURPOSE To determine whether a history of conception by assisted reproductive technology (ART) is associated with occurrence of one or more imprinting disorders of either maternal or paternal origin. METHODS We implemented a systematic review of scholarly literature followed by comprehensive meta-analysis to quantitatively synthesize data from reports relating to use of ART to occurrence of any imprinting disorder of humans, including Beckwith-Wiedemann (BWS), Angelman (AS), Prader-Willi (PWS), and Silver-Russell (SRS) syndromes, as well as transient neonatal diabetes mellitus (TNDB) and sporadic retinoblasoma (RB). RESULTS The systematic review identified 13 reports presenting unique data from 23 studies that related conception following ART to occurrence of imprinting disorders. Multiple studies of four disorder were identified, for which meta-analysis yielded the following summary estimates of associations with a history of ART: AS, summary odds ratio (sOR) = 4.7 (95% confidence interval (CI) 2.6-8.5, 4 studies); BWS, sOR = 5.8 (95% CI 3.1-11.1, 8 studies); PWS, sOR = 2.2 (95% CI 1.6-3.0, 6 studies); SRS, sOR = 11.3 (95% CI 4.5-28.5, 3 studies). Only one study reported on each of TNDB and RB. CONCLUSION Published data reveal positive associations between history of ART conception and each of four imprinting disorders. Reasons for these associations warrant further investigation.
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50
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Anav M, Ferrières-Hoa A, Gala A, Fournier A, Zaragoza S, Vintejoux E, Vincens C, Hamamah S. [Birth weight and frozen embryo transfer: State of the art]. ACTA ACUST UNITED AC 2018; 46:489-496. [PMID: 29680508 DOI: 10.1016/j.gofs.2018.03.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Indexed: 11/26/2022]
Abstract
The aim of this study was to update our acknowledgment if there is a link between assisted embryo cryopreservation and epigenetics in human? Animal studies have demonstrated epigenetics consequence and especially imprinting disorders due to in vitro culture. In human, it is important to note that after frozen embryo transfer birth weight is significantly increased by 81 to 250g. But these studies cannot identify the reasons of such difference. This review strongly suggests that embryo cryopreservation is responsible for birth weight variations but mechanisms not yet elucidated. Epigenetics is probably one of these but to date, none study is able to prove it. We have to be attentive on a possible link between assisted reproductive technology (ART) and epigenetics reprogrammation.
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Affiliation(s)
- M Anav
- Département biologie de la reproduction/DPI, hôpital Arnaud-de-Villeneuve, 371, avenue du Doyen-Gaston-Giraud, 34295, Montpellier, France
| | - A Ferrières-Hoa
- Département biologie de la reproduction/DPI, hôpital Arnaud-de-Villeneuve, 371, avenue du Doyen-Gaston-Giraud, 34295, Montpellier, France
| | - A Gala
- Département biologie de la reproduction/DPI, hôpital Arnaud-de-Villeneuve, 371, avenue du Doyen-Gaston-Giraud, 34295, Montpellier, France
| | - A Fournier
- Département biologie de la reproduction/DPI, hôpital Arnaud-de-Villeneuve, 371, avenue du Doyen-Gaston-Giraud, 34295, Montpellier, France
| | - S Zaragoza
- Département biologie de la reproduction/DPI, hôpital Arnaud-de-Villeneuve, 371, avenue du Doyen-Gaston-Giraud, 34295, Montpellier, France
| | - E Vintejoux
- Service de gynécologie obstétrique, CHU Arnaud-de-Villeneuve, 371, avenue du Doyen-Gaston-Giraud, 34295, Montpellier, France
| | - C Vincens
- Service de gynécologie obstétrique, CHU Arnaud-de-Villeneuve, 371, avenue du Doyen-Gaston-Giraud, 34295, Montpellier, France
| | - S Hamamah
- Département biologie de la reproduction/DPI, hôpital Arnaud-de-Villeneuve, 371, avenue du Doyen-Gaston-Giraud, 34295, Montpellier, France.
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