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Mertens J, Belva F, van Montfoort APA, Regin M, Zambelli F, Seneca S, Couvreu de Deckersberg E, Bonduelle M, Tournaye H, Stouffs K, Barbé K, Smeets HJM, Van de Velde H, Sermon K, Blockeel C, Spits C. Children born after assisted reproduction more commonly carry a mitochondrial genotype associating with low birthweight. Nat Commun 2024; 15:1232. [PMID: 38336715 PMCID: PMC10858059 DOI: 10.1038/s41467-024-45446-1] [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: 12/10/2022] [Accepted: 01/23/2024] [Indexed: 02/12/2024] Open
Abstract
Children conceived through assisted reproductive technologies (ART) have an elevated risk of lower birthweight, yet the underlying cause remains unclear. Our study explores mitochondrial DNA (mtDNA) variants as contributors to birthweight differences by impacting mitochondrial function during prenatal development. We deep-sequenced the mtDNA of 451 ART and spontaneously conceived (SC) individuals, 157 mother-child pairs and 113 individual oocytes from either natural menstrual cycles or after ovarian stimulation (OS) and find that ART individuals carried a different mtDNA genotype than SC individuals, with more de novo non-synonymous variants. These variants, along with rRNA variants, correlate with lower birthweight percentiles, independent of conception mode. Their higher occurrence in ART individuals stems from de novo mutagenesis associated with maternal aging and OS-induced oocyte cohort size. Future research will establish the long-term health consequences of these changes and how these findings will impact the clinical practice and patient counselling in the future.
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Affiliation(s)
- Joke Mertens
- Research Group Reproduction and Genetics, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium
| | - Florence Belva
- Center for Medical Genetics, UZ Brussel, Brussels, Belgium
| | - Aafke P A van Montfoort
- Department of Obstetrics & Gynaecology, GROW School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Marius Regin
- Research Group Reproduction and Genetics, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium
| | | | - Sara Seneca
- Research Group Reproduction and Genetics, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium
- Center for Medical Genetics, UZ Brussel, Brussels, Belgium
| | - Edouard Couvreu de Deckersberg
- Research Group Reproduction and Genetics, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium
| | | | - Herman Tournaye
- Brussels IVF, Center for Reproductive Medicine, UZ Brussel, Brussels, Belgium
- Research Group Biology of the Testis, Faculty of Medicine, Vrije Universiteit Brussel, Brussels, Belgium
| | - Katrien Stouffs
- Research Group Reproduction and Genetics, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium
- Center for Medical Genetics, UZ Brussel, Brussels, Belgium
| | - Kurt Barbé
- Interfaculty Center Data Processing & Statistics, Vrije Universiteit Brussel, Brussels, Belgium
| | - Hubert J M Smeets
- Department of Toxicogenomics, Maastricht University, Maastricht, The Netherlands
- MHeNs School Institute for Mental Health and Neuroscience, GROW Institute for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
| | - Hilde Van de Velde
- Brussels IVF, Center for Reproductive Medicine, UZ Brussel, Brussels, Belgium
- Research Group Reproduction and Immunology, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium
| | - Karen Sermon
- Research Group Reproduction and Genetics, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium
| | - Christophe Blockeel
- Brussels IVF, Center for Reproductive Medicine, UZ Brussel, Brussels, Belgium
- Department of Obstetrics and Gynaecology, School of Medicine, University of Zagreb, Šalata 3, Zagreb, 10000, Croatia
| | - Claudia Spits
- Research Group Reproduction and Genetics, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium.
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Koeck RM, Busato F, Tost J, Zandstra H, Remy S, Langie S, Gielen M, van Golde R, Dumoulin JCM, Brunner H, Zamani Esteki M, van Montfoort APA. At age 9, the methylome of assisted reproductive technology children that underwent embryo culture in different media is not significantly different on a genome-wide scale. Hum Reprod 2022; 37:2709-2721. [PMID: 36206092 DOI: 10.1093/humrep/deac213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Revised: 09/05/2022] [Indexed: 11/12/2022] Open
Abstract
STUDY QUESTION Can we detect DNA methylation differences between ART children that underwent embryo culture in different media? SUMMARY ANSWER We identified no significant differences in site-specific or regional DNA methylation between the different culture medium groups. WHAT IS KNOWN ALREADY Embryo culture in G3 or K-SICM medium leads to differences in embryonic, neonatal and childhood outcomes, including growth and weight. The methylome may mediate this association as the period of in vitro culture of ART treatments coincides with epigenetic reprogramming. STUDY DESIGN, SIZE, DURATION This study was conducted as a follow-up to a previous culture medium comparison study in which couples were pseudo-randomized to embryo culture in G3 or K-SICM medium. Of the resultant singletons, 120 (n = 65 G3, n = 55 K-SICM), were recruited at age 9. PARTICIPANTS/MATERIALS, SETTING, METHODS The ART children provided a saliva sample from which the methylome was analysed using the Infinium MethylationEPIC array. After quality and context filtering, 106 (n = 57 G3, n = 49 K-SICM) samples and 659 708 sites were retained for the analyses. Differential methylation analyses were conducted using mixed effects linear models corrected for age, sex, sample plate and cell composition. These were applied to all cytosine-guanine dinucleotide (CpG) sites, various genomic regions (genes, promoters, CpG Islands (CGIs)) and as a targeted analysis of imprinted genes and birth weight-associated CpG sites. Differential variance was assessed using the improved epigenetic variable outliers for risk prediction analysis (iEVORA) algorithm and methylation outliers were identified using a previously defined threshold (upper or lower quartile plus or minus three times the interquartile range, respectively). MAIN RESULTS AND THE ROLE OF CHANCE After correcting for multiple testing, we did not identify any significantly differentially methylated CpG sites, genes, promoters or CGIs between G3 and K-SICM children despite a lenient corrected P-value threshold of 0.1. Targeted analyses of (sites within) imprinted genes and birth weight-associated sites also did not identify any significant differences. The number of DNA methylation outliers per sample was comparable between the culture medium groups. iEVORA identified 101 differentially variable CpG sites of which 94 were more variable in the G3 group. LARGE SCALE DATA Gene Expression Omnibus (GEO) GSE196432. LIMITATIONS, REASONS FOR CAUTION To detect significant methylation differences with a magnitude of <10% between the groups many more participants would be necessary; however, the clinical relevance of such small differences is unclear. WIDER IMPLICATIONS OF THE FINDINGS The results of this study are reassuring, suggesting that if there is an effect of the culture medium on DNA methylation (and methylation-mediated diseases risk), it does not differ between the two media investigated here. The findings concur with other methylome studies of ART neonates and children that underwent embryo culture in different media, which also found no significant methylome differences. STUDY FUNDING/COMPETING INTEREST(S) Study funded by March of Dimes (6-FY13-153), EVA (Erfelijkheid Voortplanting & Aanleg) specialty programme (grant no. KP111513) of Maastricht University Medical Centre (MUMC+) and the Horizon 2020 innovation (ERIN) (grant no. EU952516) of the European Commission. The authors do not report any conflicts of interest relevant to this study. TRIAL REGISTRATION NUMBER Dutch Trial register-NL4083.
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Affiliation(s)
- Rebekka M Koeck
- Department of Clinical Genetics, Maastricht University Medical Centre+, Maastricht, The Netherlands.,Department of Genetics and Cell Biology, GROW School for Oncology and Reproduction, Maastricht University, Maastricht, The Netherlands
| | - Florence Busato
- Laboratory for Epigenetics & Environment, CEA-Centre National de Recherche en Genomique Humaine, Evry, France
| | - Jorg Tost
- Laboratory for Epigenetics & Environment, CEA-Centre National de Recherche en Genomique Humaine, Evry, France
| | - Heleen Zandstra
- Department of Obstetrics and Gynaecology, GROW School for Oncology and Reproduction, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Sylvie Remy
- Health Unit, Flemish Institute for Technological Research (VITO), Mol, Belgium
| | - Sabine Langie
- Health Unit, Flemish Institute for Technological Research (VITO), Mol, Belgium.,Department of Pharmacology & Toxicology, School for Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, The Netherlands
| | - Marij Gielen
- Department of Epidemiology and Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University Medical Centre, Maastricht, the Netherlands
| | - Ron van Golde
- Department of Obstetrics and Gynaecology, GROW School for Oncology and Reproduction, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - John C M Dumoulin
- Department of Obstetrics and Gynaecology, GROW School for Oncology and Reproduction, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Han Brunner
- Department of Clinical Genetics, Maastricht University Medical Centre+, Maastricht, The Netherlands.,Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Masoud Zamani Esteki
- Department of Clinical Genetics, Maastricht University Medical Centre+, Maastricht, The Netherlands.,Department of Genetics and Cell Biology, GROW School for Oncology and Reproduction, Maastricht University, Maastricht, The Netherlands
| | - Aafke P A van Montfoort
- Department of Obstetrics and Gynaecology, GROW School for Oncology and Reproduction, Maastricht University Medical Centre+, Maastricht, The Netherlands
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Koeck RM, Busato F, Tost J, Consten D, van Echten-Arends J, Mastenbroek S, Wurth Y, Remy S, Langie S, Nawrot TS, Plusquin M, Alfano R, Bijnens EM, Gielen M, van Golde R, Dumoulin JCM, Brunner H, van Montfoort APA, Zamani Esteki M. Methylome-wide analysis of IVF neonates that underwent embryo culture in different media revealed no significant differences. NPJ Genom Med 2022; 7:39. [PMID: 35768464 PMCID: PMC9243125 DOI: 10.1038/s41525-022-00310-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 06/13/2022] [Indexed: 02/06/2023] Open
Abstract
A growing number of children born are conceived through in vitro fertilisation (IVF), which has been linked to an increased risk of adverse perinatal outcomes, as well as altered growth profiles and cardiometabolic differences in the resultant individuals. Some of these outcomes have also been shown to be influenced by the use of different IVF culture media and this effect is hypothesised to be mediated epigenetically, e.g. through the methylome. As such, we profiled the umbilical cord blood methylome of IVF neonates that underwent preimplantation embryo development in two different IVF culture media (G5 or HTF), using the Infinium Human Methylation EPIC BeadChip. We found no significant methylation differences between the two groups in terms of: (i) systematic differences at CpG sites or regions, (ii) imprinted sites/genes or birth weight-associated sites, (iii) stochastic differences presenting as DNA methylation outliers or differentially variable sites, and (iv) epigenetic gestational age acceleration.
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Affiliation(s)
- Rebekka M Koeck
- Department of Clinical Genetics, Maastricht University Medical Centre+, Maastricht, The Netherlands.,Department of Genetics and Cell Biology, GROW School for Oncology and Reproduction, Maastricht University, Maastricht, The Netherlands
| | - Florence Busato
- Laboratory for Epigenetics & Environment, Centre National de Recherche en Genomique Humaine, CEA - institut de Biologie François Jacob, Université Paris Saclay, 91000, Evry, France
| | - Jorg Tost
- Laboratory for Epigenetics & Environment, Centre National de Recherche en Genomique Humaine, CEA - institut de Biologie François Jacob, Université Paris Saclay, 91000, Evry, France
| | - Dimitri Consten
- Center for Reproductive Medicine, St. Elisabeth-TweeSteden Hospital, Hilvarenbeekseweg 60, 5022, GC, Tilburg, the Netherlands
| | - Jannie van Echten-Arends
- Section of Reproductive Medicine, Department of Obstetrics and Gynecology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713, GZ, Groningen, the Netherlands
| | - Sebastiaan Mastenbroek
- Center for Reproductive Medicine, Amsterdam Reproduction & Development Research Institute, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105, AZ, Amsterdam, the Netherlands
| | - Yvonne Wurth
- Center for Reproductive Medicine, St. Elisabeth-TweeSteden Hospital, Hilvarenbeekseweg 60, 5022, GC, Tilburg, the Netherlands
| | - Sylvie Remy
- Health Unit, Flemish Institute for Technological Research (VITO), Boeretang 200, 2400, Mol, Belgium
| | - Sabine Langie
- Health Unit, Flemish Institute for Technological Research (VITO), Boeretang 200, 2400, Mol, Belgium.,Department of Pharmacology & Toxicology, School for Nutrition and Translational Research in Metabolism (NUTRIM), Maastricht University, Maastricht, The Netherlands
| | - Tim S Nawrot
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium.,Department of Public Health and Primary Care, Leuven University (KU Leuven), Leuven, Belgium
| | - Michelle Plusquin
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Rossella Alfano
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Esmée M Bijnens
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium.,Department of Human Structure and Repair, Ghent University Hospital, Ghent, Belgium
| | - Marij Gielen
- Department of Epidemiology and Nutrition and Toxicology Research Institute Maastricht (NUTRIM), Maastricht University Medical Centre, Maastricht, the Netherlands
| | - Ron van Golde
- Department of Obstetrics and Gynaecology, GROW School for Oncology and Reproduction, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - John C M Dumoulin
- Department of Obstetrics and Gynaecology, GROW School for Oncology and Reproduction, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - Han Brunner
- Department of Clinical Genetics, Maastricht University Medical Centre+, Maastricht, The Netherlands.,Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Aafke P A van Montfoort
- Department of Obstetrics and Gynaecology, GROW School for Oncology and Reproduction, Maastricht University Medical Center+, Maastricht, The Netherlands.
| | - Masoud Zamani Esteki
- Department of Clinical Genetics, Maastricht University Medical Centre+, Maastricht, The Netherlands. .,Department of Genetics and Cell Biology, GROW School for Oncology and Reproduction, Maastricht University, Maastricht, The Netherlands.
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Sciorio R, El Hajj N. Epigenetic Risks of Medically Assisted Reproduction. J Clin Med 2022; 11:jcm11082151. [PMID: 35456243 PMCID: PMC9027760 DOI: 10.3390/jcm11082151] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 04/05/2022] [Accepted: 04/11/2022] [Indexed: 12/14/2022] Open
Abstract
Since the birth of Louise Joy Brown, the first baby conceived via in vitro fertilization, more than 9 million children have been born worldwide using assisted reproductive technologies (ART). In vivo fertilization takes place in the maternal oviduct, where the unique physiological conditions guarantee the healthy development of the embryo. During early embryogenesis, a major wave of epigenetic reprogramming takes place that is crucial for the correct development of the embryo. Epigenetic reprogramming is susceptible to environmental changes and non-physiological conditions such as those applied during in vitro culture, including shift in pH and temperature, oxygen tension, controlled ovarian stimulation, intracytoplasmic sperm injection, as well as preimplantation embryo manipulations for genetic testing. In the last decade, concerns were raised of a possible link between ART and increased incidence of imprinting disorders, as well as epigenetic alterations in the germ cells of infertile parents that are transmitted to the offspring following ART. The aim of this review was to present evidence from the literature regarding epigenetic errors linked to assisted reproduction treatments and their consequences on the conceived children. Furthermore, we provide an overview of disease risk associated with epigenetic or imprinting alterations in children born via ART.
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Affiliation(s)
- Romualdo Sciorio
- Edinburgh Assisted Conception Programme, Royal Infirmary of Edinburgh, Edinburgh EH16 4SA, UK
- Correspondence:
| | - Nady El Hajj
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha P.O. Box 34110, Qatar;
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5
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OUP accepted manuscript. Hum Reprod Update 2022; 28:629-655. [DOI: 10.1093/humupd/dmac010] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 02/04/2022] [Indexed: 11/13/2022] Open
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OUP accepted manuscript. Hum Reprod Update 2022; 28:457-479. [DOI: 10.1093/humupd/dmac014] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 02/17/2022] [Indexed: 11/12/2022] Open
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Ducreux B, Frappier J, Bruno C, Doukani A, Guilleman M, Simon E, Martinaud A, Bourc’his D, Barberet J, Fauque P. Genome-Wide Analysis of DNA Methylation in Buccal Cells of Children Conceived through IVF and ICSI. Genes (Basel) 2021; 12:1912. [PMID: 34946866 PMCID: PMC8701402 DOI: 10.3390/genes12121912] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/19/2021] [Accepted: 11/26/2021] [Indexed: 11/25/2022] Open
Abstract
Early life periconceptional exposures during assisted reproductive technology (ART) procedures could alter the DNA methylation profiles of ART children, notably in imprinted genes and repetitive elements. At the genome scale, DNA methylation differences have been reported in ART conceptions at birth, but it is still unclear if those differences remain at childhood. Here, we performed an epigenome-wide DNA methylation association study using Illumina InfiniumEPIC BeadChip to assess the effects of the mode of conception on the methylome of buccal cells from 7- to 8-year-old children (48 children conceived after ART or naturally (control, CTL)) and according to the embryo culture medium in which they were conceived. We identified 127 differentially methylated positions (DMPs) and 16 differentially methylated regions (DMRs) (FDR < 0.05) with low delta beta differences between the two groups (ART vs. CTL). DMPs were preferentially located inside promoter proximal regions and CpG islands and were mostly hypermethylated with ART. We highlighted that the use of distinct embryo culture medium was not associated with DNA methylation differences in childhood. Overall, we bring additional evidence that children conceived via ART display limited genome-wide DNA methylation variation compared with those conceived naturally.
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Affiliation(s)
- Bastien Ducreux
- Equipe Génétique des Anomalies du Développement (GAD), Université Bourgogne Franche-Comté, INSERM UMR1231, 2 Rue Angélique Ducoudray, F-21000 Dijon, France; (B.D.); (J.F.); (C.B.); (M.G.); (E.S.); (A.M.); (J.B.)
| | - Jean Frappier
- Equipe Génétique des Anomalies du Développement (GAD), Université Bourgogne Franche-Comté, INSERM UMR1231, 2 Rue Angélique Ducoudray, F-21000 Dijon, France; (B.D.); (J.F.); (C.B.); (M.G.); (E.S.); (A.M.); (J.B.)
- Laboratoire de Biologie de la Reproduction—CECOS, CHU Dijon Bourgogne, 14 Rue Gaffarel, F-21000 Dijon, France
| | - Céline Bruno
- Equipe Génétique des Anomalies du Développement (GAD), Université Bourgogne Franche-Comté, INSERM UMR1231, 2 Rue Angélique Ducoudray, F-21000 Dijon, France; (B.D.); (J.F.); (C.B.); (M.G.); (E.S.); (A.M.); (J.B.)
- Laboratoire de Biologie de la Reproduction—CECOS, CHU Dijon Bourgogne, 14 Rue Gaffarel, F-21000 Dijon, France
| | - Abiba Doukani
- Faculté de Médecine, Sorbonne Université, UMS 37 PASS Plateforme P3S, 91, Bd de l’hôpital, F-75634 Paris, France;
| | - Magali Guilleman
- Equipe Génétique des Anomalies du Développement (GAD), Université Bourgogne Franche-Comté, INSERM UMR1231, 2 Rue Angélique Ducoudray, F-21000 Dijon, France; (B.D.); (J.F.); (C.B.); (M.G.); (E.S.); (A.M.); (J.B.)
- Laboratoire de Biologie de la Reproduction—CECOS, CHU Dijon Bourgogne, 14 Rue Gaffarel, F-21000 Dijon, France
| | - Emmanuel Simon
- Equipe Génétique des Anomalies du Développement (GAD), Université Bourgogne Franche-Comté, INSERM UMR1231, 2 Rue Angélique Ducoudray, F-21000 Dijon, France; (B.D.); (J.F.); (C.B.); (M.G.); (E.S.); (A.M.); (J.B.)
- Service de Gynécologie-Obstétrique, CHU Dijon Bourgogne, 14 Rue Gaffarel, F-21000 Dijon, France
| | - Aurélie Martinaud
- Equipe Génétique des Anomalies du Développement (GAD), Université Bourgogne Franche-Comté, INSERM UMR1231, 2 Rue Angélique Ducoudray, F-21000 Dijon, France; (B.D.); (J.F.); (C.B.); (M.G.); (E.S.); (A.M.); (J.B.)
- Laboratoire de Biologie de la Reproduction—CECOS, CHU Dijon Bourgogne, 14 Rue Gaffarel, F-21000 Dijon, France
| | - Déborah Bourc’his
- Institut Curie, PSL University, CNRS, INSERM, 26 Rue d’Ulm, F-75248 Paris, France;
| | - Julie Barberet
- Equipe Génétique des Anomalies du Développement (GAD), Université Bourgogne Franche-Comté, INSERM UMR1231, 2 Rue Angélique Ducoudray, F-21000 Dijon, France; (B.D.); (J.F.); (C.B.); (M.G.); (E.S.); (A.M.); (J.B.)
- Laboratoire de Biologie de la Reproduction—CECOS, CHU Dijon Bourgogne, 14 Rue Gaffarel, F-21000 Dijon, France
| | - Patricia Fauque
- Equipe Génétique des Anomalies du Développement (GAD), Université Bourgogne Franche-Comté, INSERM UMR1231, 2 Rue Angélique Ducoudray, F-21000 Dijon, France; (B.D.); (J.F.); (C.B.); (M.G.); (E.S.); (A.M.); (J.B.)
- Laboratoire de Biologie de la Reproduction—CECOS, CHU Dijon Bourgogne, 14 Rue Gaffarel, F-21000 Dijon, France
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Quinn MM, Marsh P, Ribeiro S, Simbulan RK, Hickman C, Berntsen J, Rosen MP. Aneuploidy rates and morphokinetic parameters of embryos cultured in distinct culture media: a sibling oocyte study. Hum Reprod 2021; 37:226-234. [PMID: 34791277 DOI: 10.1093/humrep/deab253] [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: 07/02/2021] [Revised: 09/01/2021] [Indexed: 11/13/2022] Open
Abstract
STUDY QUESTION Do embryos from sibling oocytes assigned to distinct single-step media culture systems demonstrate differences in early embryo development, morphokinectics or aneuploidy rates? SUMMARY ANSWER Embryo quality, morphokinetic parameters and aneuploidy rates from trophectoderm biopsy were similar between sibling embryos cultured in distinct media systems from the time of gamete isolation. WHAT IS KNOWN ALREADY Studies on the effect of commercially available embryo culture media systems have demonstrated inconsistent impact on human embryonic development, morphokinetics, aneuploidy rates and clinical outcomes. In addition, these studies have been primarily randomized at the level of the embryo or the patient to culture media. STUDY DESIGN, SIZE, DURATION Prospective sibling oocyte cohort derived from 200 subjects undergoing IVF at a tertiary academic medical center between February 2018 and November 2019. PARTICIPANTS/MATERIALS, SETTING, METHODS Sibling oocytes were allocated to Global® or SAGE® media system based upon laterality of ovary from which they were retrieved. All embryos were cultured in a time-lapse incubator. Blastocysts underwent trophectoderm biopsy for preimplantation genetic testing for aneuploidy using next-generation sequencing. MAIN RESULTS AND THE ROLE OF CHANCE One hundred twenty-seven subjects (n = 127) had paired blastocysts for biopsy in each culture media system. There was no difference in top quality blastocyst formation (47.1 ± 31.0 vs 48.1 ± 27.2%; P = 0.87) nor aneuploidy rate (62.3 ± 34.0 vs 56.1 ± 34.4%; P = 0.07) for sibling embryos cultured in Global versus SAGE media system. Embryo morphokinetic parameters including time to each cell division from two cells (t2) to eight cells (t8), time to morula stage (tM), time to blastocele formation (tSB), time to fully formed blastocyst (tB) and time to expansion of the blastocyst (tEB) were similar between paired blastocysts from each culture media system. LIMITATIONS, REASONS FOR CAUTION Pregnancy outcomes and offspring health data were not available for analysis. WIDER IMPLICATIONS OF THE FINDINGS Commercially available culture media may not have a differential impact on embryo development and blastocyst aneuploidy rate when patient and stimulation-related factors are held constant. STUDY FUNDING/COMPETING INTEREST(S) There was no external funding for this study. C.H. is owner of a consultancy company, IVF Professionals, Chief Scientific Officer at Apricity, Executive Director at TMRW and co-owner and shareholder of Aria Fertility. She has received speaker fees, consulting fees and travel support from Cooper Surgical and Vitrolife. J.B. is an employee and shareholder of vitrolife. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- Molly M Quinn
- Department of Obstetrics and Gynecology, University of California Los Angeles, Los Angeles, CA, USA
| | - Philip Marsh
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California San Francisco, San Francisco, CA, USA
| | - Salustiano Ribeiro
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California San Francisco, San Francisco, CA, USA
| | - Rhodel K Simbulan
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California San Francisco, San Francisco, CA, USA
| | | | | | - Mitchell P Rosen
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California San Francisco, San Francisco, CA, USA
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Barberet J, Binquet C, Guilleman M, Doukani A, Choux C, Bruno C, Bourredjem A, Chapusot C, Bourc'his D, Duffourd Y, Fauque P. Do assisted reproductive technologies and in vitro embryo culture influence the epigenetic control of imprinted genes and transposable elements in children? Hum Reprod 2021; 36:479-492. [PMID: 33319250 DOI: 10.1093/humrep/deaa310] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 09/10/2020] [Indexed: 11/15/2022] Open
Abstract
STUDY QUESTION Do assisted reproductive technologies (ART) and in vitro embryo culture influence the epigenetic control of imprinted genes (IGs) and transposable elements (TEs) in children? SUMMARY ANSWER Significant differences in the DNA methylation of IGs or transposon families were reported between ART and naturally conceived children, but there was no difference between culture media. WHAT IS KNOWN ALREADY There is concern that ART may play a role in increasing the incidence of adverse health outcomes in children, probably through epigenetic mechanisms. It is crucial to assess epigenetic control, especially following non-optimal in vitro culture conditions and to compare epigenetic analyses from ART-conceived and naturally conceived children. STUDY DESIGN, SIZE, DURATION This follow-up study was based on an earlier randomized study comparing in vitro fertilization outcomes following the use of two distinct culture media. We compared the epigenetic profiles of children from the initial randomized study according to the mode of conception [i.e. ART singletons compared with those of a cohort of naturally conceived singleton children (CTL)], the type of embryo culture medium used [global medium (LifeGlobal) and single step medium (Irvine Scientific)] and the mode of in vitro fertilization (i.e. IVF versus ICSI). PARTICIPANTS/MATERIALS, SETTING, METHODS A total of 57 buccal smears were collected from 7- to 8-year-old children. The DNA methylation profiles of four differentially methylated regions (DMRs) of IGs (H19/IGF2: IG-DMR, KCNQ1OT1: TSS-DMR, SNURF: TSS-DMR, and PEG3: TSS-DMR) and two TEs (AluYa5 and LINE-1) were first assessed by pyrosequencing. We further explored IGs and TEs' methylation changes through methylation array (Human MethylationEPIC BeadChip referred as EPIC array, Illumina). MAIN RESULTS AND THE ROLE OF CHANCE Changes in the IGs' DNA methylation levels were found in ART children compared to controls. DNA methylation levels of H19/IGF2 DMR were significantly lower in ART children than in CTL children [52% versus 58%, P = 0.003, false discovery rate (FDR) P = 0.018] while a significantly higher methylation rate was observed for the PEG3 DMR (51% versus 48%, P = 0.007, FDR P = 0.021). However, no differences were found between the culture media. After observing these targeted modifications, analyses were performed at wider scale. Again, no differences were detected according to the culture media, but imprinted-related DMRs overlapping promoter region near the genes major for the development (MEG3, BLCAP, and DLX5) were detected between the ART and CTL children. LIMITATIONS, REASONS FOR CAUTION The sample size could seem relatively small, but the high consistency of our results was ensured by the homogeneity of the cohort from the initial randomized study, the standardized laboratory techniques and the robust statistical analyses accounting for multiple testing. WIDER IMPLICATIONS OF THE FINDINGS Although this study did not report DNA methylation differences depending on the culture medium, it sheds light on epigenetic changes that could be observed in some children conceived by ART as compared to CTL children. The clinical relevance of such differences remains largely unknown, and it is still unclear whether such changes are due to some specific ART procedures and/or to parental infertility. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by funding from the Agence Nationale pour la Recherche ('CARE'-ANR JCJC 2017). The authors have no conflicts of interest. TRIAL REGISTRATION NUMBER Not concerned.
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Affiliation(s)
- J Barberet
- Université Bourgogne Franche-Comté-Equipe Génétique des Anomalies du Développement (GAD) INSERM UMR1231, Dijon, France.,CHU Dijon Bourgogne, Laboratoire de Biologie de la Reproduction-CECOS, Dijon, France
| | - C Binquet
- CHU Dijon Bourgogne, Centre d'Investigation Clinique, module Epidémiologie Clinique/essais cliniques (CIC-EC), Dijon, France.,INSERM, CIC1432, module épidémiologie clinique, Dijon, France
| | - M Guilleman
- Université Bourgogne Franche-Comté-Equipe Génétique des Anomalies du Développement (GAD) INSERM UMR1231, Dijon, France.,CHU Dijon Bourgogne, Laboratoire de Biologie de la Reproduction-CECOS, Dijon, France
| | - A Doukani
- Faculté de Médecine Sorbonne Université, Site Pitié-Salpêtrière, Paris, France
| | - C Choux
- Université Bourgogne Franche-Comté-Equipe Génétique des Anomalies du Développement (GAD) INSERM UMR1231, Dijon, France.,CHU Dijon Bourgogne, Service de Gynécologie-Obstétrique, Dijon, France
| | - C Bruno
- Université Bourgogne Franche-Comté-Equipe Génétique des Anomalies du Développement (GAD) INSERM UMR1231, Dijon, France.,CHU Dijon Bourgogne, Laboratoire de Biologie de la Reproduction-CECOS, Dijon, France
| | - A Bourredjem
- CHU Dijon Bourgogne, Centre d'Investigation Clinique, module Epidémiologie Clinique/essais cliniques (CIC-EC), Dijon, France.,INSERM, CIC1432, module épidémiologie clinique, Dijon, France
| | - C Chapusot
- CHU Dijon Bourgogne, Plateforme de génétique des Cancers de bourgogne, Dijon, France
| | - D Bourc'his
- Institut Curie, PSL University, CNRS, INSERM, Paris, France
| | - Y Duffourd
- Université Bourgogne Franche-Comté-Equipe Génétique des Anomalies du Développement (GAD) INSERM UMR1231, Dijon, France
| | - P Fauque
- Université Bourgogne Franche-Comté-Equipe Génétique des Anomalies du Développement (GAD) INSERM UMR1231, Dijon, France.,CHU Dijon Bourgogne, Laboratoire de Biologie de la Reproduction-CECOS, Dijon, France
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