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Wang X, Du Y, Cheng Y, Li J, Lu X. Dietary Factors and Incidence of Hydatidiform Mole: An Ecological Study. Nutr Cancer 2022; 74:3556-3563. [PMID: 35622384 DOI: 10.1080/01635581.2022.2079688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The current ecological study aims to explore the association between dietary factors and hydatidiform mole (HM) incidence in Japan and China. HM incidence in Japan gradually declined from 1970s to 1990s, while the dietary structure also changed during the same period, mainly characterized by a decrease in the consumption of cereals and an increase in the consumption of meat, eggs, and dairy products. In China, HM incidence varied by regions, and it positively correlated with the per capita intake of rice, fish and shrimp, and animal fat, as well as the proportion of GDP of primary industry; and negatively correlated with the per capita intake of wheat flour, starch and sugar, protein, and iron, and the proportion of protein in the caloric nutrients and the proportion of nonagricultural population. In partial analysis, the correlations of HM incidence with rice, fish and shrimp, iron, and the proportion of protein in caloric nutrients remained significant. Meanwhile, alcoholic beverage consumption and the proportion of empty calories in caloric food were also found to be positively correlated with HM incidence, while phosphorus consumption was negatively correlated. Our results suggested that HM incidence could be influenced by dietary factors.
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Affiliation(s)
- Xingran Wang
- Department of Gynecology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| | - Yan Du
- Clinical Research Unit, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| | - Yu Cheng
- Department of Gynecology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| | - Jun Li
- Clinical Research Unit, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
| | - Xin Lu
- Department of Gynecology, Obstetrics and Gynecology Hospital, Fudan University, Shanghai, China
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2
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Benítez L, Pauta M, Badenas C, Madrigal I, Nadal A, Marimon E, Borrell A. The Contribution of QF-PCR and Pathology Studies in the Diagnosis of Diandric Triploidy/Partial Mole. Diagnostics (Basel) 2021; 11:diagnostics11101811. [PMID: 34679509 PMCID: PMC8534756 DOI: 10.3390/diagnostics11101811] [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: 07/15/2021] [Revised: 09/13/2021] [Accepted: 09/22/2021] [Indexed: 11/25/2022] Open
Abstract
Objective: the aim of our study was to assess the contribution of quantitative fluorescent polymerase chain reaction (QF-PCR) and pathology studies in the diagnosis of diandric triploidies/partial hydatidiform moles. Methods: this study included all fet al triploidies diagnosed by QF-PCR in chorionic villi or amniotic fluid in the 2 centers of BCNatal in which a maternal saliva sample was used to establish its parental origin. Pathology studies were performed in products of conception and concordance between a partial hydatidiform mole diagnosis and the finding of a diandric triploidy was assessed. Results: among 46 fetal triploidies, found in 13 ongoing pregnancies and in 33 miscarriages, there were 26 (56%) diandric triploidies. Concordant molecular (diandric triploidy) and pathology results (partial mole) were achieved in 14 cases (54%), while in 6 cases (23%) pathology studies were normal, and in the remaining 6 cases (23%) pathology studies could not be performed because miscarriage was managed medically. Conclusions: diandric triploidy is associated with partial hydatidiform mole and its diagnosis is crucial to prevent the development of persistent trophoblastic disease. QF-PCR analysis in chorionic villi or amniotic fluid provides a more accurate diagnosis of the parental origin of triploidy than the classical pathology studies.
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Affiliation(s)
- Leticia Benítez
- BCNatal, Department of Maternal-Fetal Medicine, Institute Gynecology, Obstetrics and Neonatology, Hospital Clínic de Barcelona and Hospital Sant Joan de Déu, 08028 Barcelona, Spain; (L.B.); (E.M.)
| | - Montse Pauta
- BCNatal, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain;
| | - Cèlia Badenas
- Biochemistry and Molecular Genetics Department, Hospital Clínic de Barcelona, 08036 Barcelona, Spain; (C.B.); (I.M.)
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Centre for Biomedical Research on Rare Diseases (CIBERER), ISCIII, 28029 Madrid, Spain
| | - Irene Madrigal
- Biochemistry and Molecular Genetics Department, Hospital Clínic de Barcelona, 08036 Barcelona, Spain; (C.B.); (I.M.)
- Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
- Centre for Biomedical Research on Rare Diseases (CIBERER), ISCIII, 28029 Madrid, Spain
| | - Alfons Nadal
- Department of Pathology, Hospital Clínic de Barcelona, 08036 Barcelona, Spain;
- Department of Basic Clinical Practice, Universitat de Barcelona, 08036 Barcelona, Spain
- Molecular Pathology of Inflammatory Conditions and Solid Tumors, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain
| | - Edda Marimon
- BCNatal, Department of Maternal-Fetal Medicine, Institute Gynecology, Obstetrics and Neonatology, Hospital Clínic de Barcelona and Hospital Sant Joan de Déu, 08028 Barcelona, Spain; (L.B.); (E.M.)
| | - Antoni Borrell
- BCNatal, Department of Maternal-Fetal Medicine, Institute Gynecology, Obstetrics and Neonatology, Hospital Clínic de Barcelona and Hospital Sant Joan de Déu, 08028 Barcelona, Spain; (L.B.); (E.M.)
- BCNatal, Institut d’Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), 08036 Barcelona, Spain;
- Correspondence:
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3
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Zheng XZ, Qin XY, Chen SW, Wang P, Zhan Y, Zhong PP, Buza N, Jin YL, Wu BQ, Hui P. Heterozygous/dispermic complete mole confers a significantly higher risk for post-molar gestational trophoblastic disease. Mod Pathol 2020; 33:1979-1988. [PMID: 32404958 DOI: 10.1038/s41379-020-0566-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 04/25/2020] [Indexed: 01/29/2023]
Abstract
Hydatidiform moles are classified at the genetic level as androgenetic complete mole and diandric-monogynic partial mole. Conflicting data exist whether heterozygous complete moles are more aggressive clinically than homozygous complete moles. We investigated clinical outcome in a large cohort of hydatidiform moles in Chinese patients with an emphasis on genotypical correlation with post-molar gestational trophoblastic disease. Consecutive products of conceptions undergoing DNA genotyping and p57 immunohistochemistry to rule out molar gestations were included from a 5-year period at Beijing Obstetrics and Gynecology Hospital. Patient demographics and clinical follow-up information were obtained. Post-molar gestational trophoblastic disease or gestational trophoblastic neoplasia was determined by the 2002 WHO/FIGO criteria. A total of 1245 products of conceptions were classified based on genotyping results into 219 complete moles, 250 partial moles, and 776 non-molar gestations. Among 219 complete moles, 186 were homozygous/monospermic and 33 were heterozygous/dispermic. Among 250 partial moles, 246 were triploid dispermic, 2 were triploid monospermic, and 2 were tetraploid heterozygous partial moles. Among 776 non-molar gestations, 644 were diploid without chromosomal aneuploidies detectable by STR genotyping and 132 had various genetic abnormalities including 122 cases of various trisomies, 2 triploid digynic-monoandric non-molar gestations, 7 cases of possible chromosomal monosomy or uniparental disomy. Successful follow-up was achieved in 165 complete moles: post-molar gestational trophoblastic disease developed in 11.6% (16/138 cases) of homozygous complete moles and 37.0% (10/27 cases) of heterozygous complete moles. The difference between the two groups was highly significant (p = 0.0009, chi-square). None of the 218 partial moles and 367 non-molar gestations developed post-molar gestational trophoblastic disease. In conclusion, heterozygous/dispermic complete moles are clinically more aggressive with a significantly higher risk for development of post-molar gestational trophoblastic disease compared with homozygous/monospermic complete moles. Therefore, precise genotyping classification of complete moles is important for clinical prognosis and patient management.
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Affiliation(s)
- Xing-Zheng Zheng
- Department of Pathology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Xu-Ying Qin
- Department of Molecular Pathology, Beijing Taipu-Shunkang Institute for Laboratory Medicine, Beijing, China
| | - Su-Wen Chen
- Department of Birth Control, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Peng Wang
- Department of Molecular Pathology, Beijing Taipu-Shunkang Institute for Laboratory Medicine, Beijing, China
| | - Yang Zhan
- Department of Pathology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Ping-Ping Zhong
- Department of Pathology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Natalia Buza
- Department of Pathology, Yale University School of Medicine, New Haven, CT, USA
| | - Yu-Lan Jin
- Department of Pathology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
| | - Bing-Quan Wu
- Department of Pathology, Peking University Health Sciences Center, Beijing, China
| | - Pei Hui
- Department of Pathology, Yale University School of Medicine, New Haven, CT, USA.
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4
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Masset H, Zamani Esteki M, Dimitriadou E, Dreesen J, Debrock S, Derhaag J, Derks K, Destouni A, Drüsedau M, Meekels J, Melotte C, Peeraer K, Tšuiko O, van Uum C, Allemeersch J, Devogelaere B, François KO, Happe S, Lorson D, Richards RL, Theuns J, Brunner H, de Die-Smulders C, Voet T, Paulussen A, Coonen E, Vermeesch JR. Multi-centre evaluation of a comprehensive preimplantation genetic test through haplotyping-by-sequencing. Hum Reprod 2020; 34:1608-1619. [PMID: 31348829 DOI: 10.1093/humrep/dez106] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 05/16/2019] [Indexed: 12/14/2022] Open
Abstract
STUDY QUESTION Can reduced representation genome sequencing offer an alternative to single nucleotide polymorphism (SNP) arrays as a generic and genome-wide approach for comprehensive preimplantation genetic testing for monogenic disorders (PGT-M), aneuploidy (PGT-A) and structural rearrangements (PGT-SR) in human embryo biopsy samples? SUMMARY ANSWER Reduced representation genome sequencing, with OnePGT, offers a generic, next-generation sequencing-based approach for automated haplotyping and copy-number assessment, both combined or independently, in human single blastomere and trophectoderm samples. WHAT IS KNOWN ALREADY Genome-wide haplotyping strategies, such as karyomapping and haplarithmisis, have paved the way for comprehensive PGT, i.e. leveraging PGT-M, PGT-A and PGT-SR in a single workflow. These methods are based upon SNP array technology. STUDY DESIGN, SIZE, DURATION This multi-centre verification study evaluated the concordance of PGT results for a total of 225 embryos, including 189 originally tested for a monogenic disorder and 36 tested for a translocation. Concordance for whole chromosome aneuploidies was also evaluated where whole genome copy-number reference data were available. Data analysts were kept blind to the results from the reference PGT method. PARTICIPANTS/MATERIALS, SETTING, METHODS Leftover blastomere/trophectoderm whole genome amplified (WGA) material was used, or secondary trophectoderm biopsies were WGA. A reduced representation library from WGA DNA together with bulk DNA from phasing references was processed across two study sites with the Agilent OnePGT solution. Libraries were sequenced on an Illumina NextSeq500 system, and data were analysed with Agilent Alissa OnePGT software. The embedded PGT-M pipeline utilises the principles of haplarithmisis to deduce haplotype inheritance whereas both the PGT-A and PGT-SR pipelines are based upon read-count analysis in order to evaluate embryonic ploidy. Concordance analysis was performed for both analysis strategies against the reference PGT method. MAIN RESULTS AND THE ROLE OF CHANCE PGT-M analysis was performed on 189 samples. For nine samples, the data quality was too poor to analyse further, and for 20 samples, no result could be obtained mainly due to biological limitations of the haplotyping approach, such as co-localisation of meiotic crossover events and nullisomy for the chromosome of interest. For the remaining 160 samples, 100% concordance was obtained between OnePGT and the reference PGT-M method. Equally for PGT-SR, 100% concordance for all 36 embryos tested was demonstrated. Moreover, with embryos originally analysed for PGT-M or PGT-SR for which genome-wide copy-number reference data were available, 100% concordance was shown for whole chromosome copy-number calls (PGT-A). LIMITATIONS, REASONS FOR CAUTION Inherent to haplotyping methodologies, processing of additional family members is still required. Biological limitations caused inconclusive results in 10% of cases. WIDER IMPLICATIONS OF THE FINDINGS Employment of OnePGT for PGT-M, PGT-SR, PGT-A or combined as comprehensive PGT offers a scalable platform, which is inherently generic and thereby, eliminates the need for family-specific design and optimisation. It can be considered as both an improvement and complement to the current methodologies for PGT. STUDY FUNDING/COMPETING INTEREST(S) Agilent Technologies, the KU Leuven (C1/018 to J.R.V. and T.V.) and the Horizon 2020 WIDENLIFE (692065 to J.R.V. and T.V). H.M. is supported by the Research Foundation Flanders (FWO, 11A7119N). M.Z.E, J.R.V. and T.V. are co-inventors on patent applications: ZL910050-PCT/EP2011/060211- WO/2011/157846 'Methods for haplotyping single cells' and ZL913096-PCT/EP2014/068315 'Haplotyping and copy-number typing using polymorphic variant allelic frequencies'. T.V. and J.R.V. are co-inventors on patent application: ZL912076-PCT/EP2013/070858 'High-throughput genotyping by sequencing'. Haplarithmisis ('Haplotyping and copy-number typing using polymorphic variant allelic frequencies') has been licensed to Agilent Technologies. The following patents are pending for OnePGT: US2016275239, AU2014345516, CA2928013, CN105874081, EP3066213 and WO2015067796. OnePGT is a registered trademark. D.L., J.T. and R.L.R. report personal fees during the conduct of the study and outside the submitted work from Agilent Technologies. S.H. and K.O.F. report personal fees and other during the conduct of the study and outside the submitted work from Agilent Technologies. J.A. reports personal fees and other during the conduct of the study from Agilent Technologies and personal fees from Agilent Technologies and UZ Leuven outside the submitted work. B.D. reports grants from IWT/VLAIO, personal fees during the conduct of the study from Agilent Technologies and personal fees and other outside the submitted work from Agilent Technologies. In addition, B.D. has a patent 20160275239 - Genetic Analysis Method pending. The remaining authors have no conflicts of interest.
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Affiliation(s)
- Heleen Masset
- Laboratory for Cytogenetics and Genome Research, Department of Human Genetics, KU Leuven, Leuven, Belgium
| | - Masoud Zamani Esteki
- Laboratory for Cytogenetics and Genome Research, Department of Human Genetics, KU Leuven, Leuven, Belgium.,Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, The Netherlands.,Research Institute GROW, Maastricht University Medical Centre, Maastricht, The Netherlands
| | | | - Jos Dreesen
- Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, The Netherlands.,Research Institute GROW, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Sophie Debrock
- Leuven University Fertility Center, University Hospitals Leuven, Leuven, Belgium
| | - Josien Derhaag
- Research Institute GROW, Maastricht University Medical Centre, Maastricht, The Netherlands.,Department of Obstetrics and Gynaecology, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Kasper Derks
- Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Aspasia Destouni
- Laboratory for Cytogenetics and Genome Research, Department of Human Genetics, KU Leuven, Leuven, Belgium.,Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, USA.,Department of Comparative Biomedical Sciences, Louisiana State University School of Veterinary Medicine, Baton Rouge, LA, USA
| | - Marion Drüsedau
- Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Jeroen Meekels
- Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Cindy Melotte
- Center for Human Genetics, University Hospitals of Leuven, Leuven, Belgium
| | - Karen Peeraer
- Leuven University Fertility Center, University Hospitals Leuven, Leuven, Belgium
| | - Olga Tšuiko
- Laboratory for Cytogenetics and Genome Research, Department of Human Genetics, KU Leuven, Leuven, Belgium
| | - Chris van Uum
- Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Joke Allemeersch
- Diagnostics and Genomics Group, Agilent Technologies, Heverlee, Belgium
| | | | | | - Scott Happe
- Diagnostics and Genomics Group, Agilent Technologies, Cedar Creek, TX, USA
| | - Dennis Lorson
- Diagnostics and Genomics Group, Agilent Technologies, Heverlee, Belgium
| | - Rebecca Louise Richards
- Diagnostics and Genomics Group, Agilent Technologies, Heverlee, Belgium.,Diagnostics and Genomics Group, Agilent Technologies, Niel, Belgium
| | - Jessie Theuns
- Diagnostics and Genomics Group, Agilent Technologies, Niel, Belgium
| | - Han Brunner
- Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, The Netherlands.,Research Institute GROW, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Christine de Die-Smulders
- Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, The Netherlands.,Research Institute GROW, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Thierry Voet
- Laboratory of Reproductive Genomics, Department of Human Genetics, KU Leuven, Leuven, Belgium
| | - Aimée Paulussen
- Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, The Netherlands.,Research Institute GROW, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Edith Coonen
- Department of Clinical Genetics, Maastricht University Medical Center, Maastricht, The Netherlands.,Research Institute GROW, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Joris Robert Vermeesch
- Laboratory for Cytogenetics and Genome Research, Department of Human Genetics, KU Leuven, Leuven, Belgium.,Center for Human Genetics, University Hospitals of Leuven, Leuven, Belgium
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5
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Germline NLRP7 mutations: genomic imprinting and hydatidiform mole. Virchows Arch 2020; 477:175-176. [PMID: 32577811 DOI: 10.1007/s00428-020-02802-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 03/05/2020] [Accepted: 03/18/2020] [Indexed: 10/24/2022]
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6
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Robinson B, Brock J, Midgen C, Coolen J. Molar and nonmolar triploidy: Recurrence or bad luck. Clin Case Rep 2020; 8:785-789. [PMID: 32477517 PMCID: PMC7250987 DOI: 10.1002/ccr3.2703] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 12/15/2019] [Accepted: 01/12/2020] [Indexed: 11/10/2022] Open
Abstract
In triploid pregnancies, the parental origin of the extra genome determines the phenotype and placental and fetal outcomes. Molecular genetics and placental pathology enable differentiation of molar vs nonmolar pregnancy to guide future planning.
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Affiliation(s)
| | - Jo‐Ann Brock
- Departments of Anatomic Pathology and Obstetrics and GynaecologyDalhousie UniversityHalifaxNSCanada
| | - Craig Midgen
- Department of Anatomic PathologyDalhousie UniversityHalifaxNSCanada
| | - Jillian Coolen
- Department of Obstetrics and GynaecologyDalhousie UniversityHalifaxNSCanada
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7
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Usui H, Nakabayashi K, Maehara K, Hata K, Shozu M. Genome-wide single nucleotide polymorphism array analysis unveils the origin of heterozygous androgenetic complete moles. Sci Rep 2019; 9:12542. [PMID: 31467376 PMCID: PMC6715694 DOI: 10.1038/s41598-019-49047-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 08/19/2019] [Indexed: 11/17/2022] Open
Abstract
Hydatidiform moles are abnormal pregnancies, which show trophoblastic hyperplasia. Most often, the nuclear genome in complete hydatidiform moles (CHMs) is composed of only paternal chromosomes. Diploid androgenetic conceptuses can be divided into homozygous and heterozygous CHMs. Heterozygous CHMs originate from two sperms or a diploid sperm, the distinction of which has not been established. Here, we assessed the origin of heterozygous CHMs using single nucleotide polymorphism (SNP) array. Thirteen heterozygous CHMs were analysed using B allele frequency (BAF) plotting to determine the centromeric zygosity status of all chromosomes. One case was from the duplication of a single sperm with an XY chromosome. In the other twelve cases, centromeric zygosity was random, i.e. mixed status. Thus, the twelve heterozygous CHMs were considered to be of dispermic origin but not diploid sperm origin. BAF plotting of SNP array can be a powerful tool to estimate the type of hydatidiform moles.
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Affiliation(s)
- Hirokazu Usui
- Department of Reproductive Medicine, Graduate School of Medicine, Chiba University, Chiba, Chiba, 260-8670, Japan.
| | - Kazuhiko Nakabayashi
- Department of Maternal-Fetal Biology, National Research Institute for Child Health and Development, Setagaya, Tokyo, 157-8535, Japan
| | - Kayoko Maehara
- Department of Maternal-Fetal Biology, National Research Institute for Child Health and Development, Setagaya, Tokyo, 157-8535, Japan.,Department of Nutrition, Graduate School of Health Sciences, Kio University, Kitakatsuragi, Nara, 635-0832, Japan
| | - Kenichiro Hata
- Department of Maternal-Fetal Biology, National Research Institute for Child Health and Development, Setagaya, Tokyo, 157-8535, Japan
| | - Makio Shozu
- Department of Reproductive Medicine, Graduate School of Medicine, Chiba University, Chiba, Chiba, 260-8670, Japan
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8
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Buza N, McGregor SM, Barroilhet L, Zheng X, Hui P. Paternal uniparental isodisomy of tyrosine hydroxylase locus at chromosome 11p15.4: spectrum of phenotypical presentations simulating hydatidiform moles. Mod Pathol 2019; 32:1180-1188. [PMID: 30952972 DOI: 10.1038/s41379-019-0266-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 02/10/2019] [Accepted: 02/27/2019] [Indexed: 01/27/2023]
Abstract
Uniparental disomy is an abnormal genetic condition in which both homologous chromosomes or part of the chromosome are inherited from one parent and the other parent's homologous chromosome is lost. We report three cases of gestations with paternal uniparental isodisomy at tyrosine hydroxylase or TH01 locus on chromosome 11p15.4 identified by DNA genotyping. The patients' age ranged from 32 to 35 years and all patients presented with missed abortion during the first trimester. Abnormal chorionic villi were seen in all cases with histomorphological and/or p57 immunohistochemical features simulating either partial or complete mole. While two patients had an uneventful clinical course, one patient presented with clinical complications simulating persistent gestational trophoblastic disease/neoplasia that required multiagent chemotherapy with etoposide, methotrexate, actinomycin D, vincristine, and cyclophosphamide (EMA-CO). In summary, paternal uniparental isodisomy of tyrosine hydroxylase locus at chromosome 11p15.4 may result in an abnormal gestation that simulates a hydatidiform mole both clinically and histologically. The presence of abnormal trophoblastic proliferation combined with loss of p57 expression in villous cytotrophoblast and stromal cells may be associated with an aggressive clinical behavior.
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Affiliation(s)
- Natalia Buza
- Department of Pathology, Yale University School of Medicine, New Haven, CT, USA
| | | | - Lisa Barroilhet
- Department of Gynecology, University of Wisconsin, Madison, WI, USA
| | - Xingzheng Zheng
- Department of Pathology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, P. R. China
| | - Pei Hui
- Department of Pathology, Yale University School of Medicine, New Haven, CT, USA.
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9
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Lee CT, Tung YC, Hwu WL, Shih JC, Lin WH, Wu MZ, Kuo KT, Yang YL, Chen HL, Chen M, Su YN, Jong YJ, Liu SY, Tsai WY, Lee NC. Mosaic paternal haploidy in a patient with pancreatoblastoma and Beckwith-Wiedemann spectrum. Am J Med Genet A 2019; 179:1878-1883. [PMID: 31231953 DOI: 10.1002/ajmg.a.61276] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 06/01/2019] [Accepted: 06/11/2019] [Indexed: 02/05/2023]
Abstract
Pancreatoblastoma is a rare type of pancreatic cancer in children. Here, we describe a case in which Beckwith-Wiedemann syndrome (BWS) was first suspected because of placental mesenchymal dysplasia. Although the baby did not show the stigmata characteristic of BWS or abnormal peripheral blood methylation, she developed a massive pancreatoblastoma 2 months later. She survived after partial excision of the tumor and chemotherapy. The methylation pattern of the pancreatoblastoma tissue was typical of BWS. Single nucleotide polymorphism (SNP) array analyzes revealed that the pancreatoblastoma tissue had genome-wide loss of maternal alleles. Peripheral blood and nontumor pancreatic tissue showed normal biparental genomic contribution. Interphase fluorescence in situ hybridization analysis with centromeric probes for chromosomes 2 and 11 revealed haploid pancreatoblastoma cells, whereas the placental mesenchymal dysplasia tissue and nontumor pancreas tissue showed diploidy. SNP genotype analysis suggested the presence of mosaicism with the pancreatoblastoma tissue having a different paternal haplotype than that of the peripheral blood and nontumor pancreatic tissue. We report for the first time mosaic paternal haploidy associated with pancreatoblastoma. Babies with placental mesenchymal dysplasia, even those without a definitive diagnosis of BWS, need to be closely followed for the occurrence of embryonic tumors.
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Affiliation(s)
- Cheng-Ting Lee
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.,Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yi-Ching Tung
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Wuh-Liang Hwu
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.,Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan
| | - Jin-Chung Shih
- Department of Obstetrics and Gynecology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Wen-Hsi Lin
- Department of Surgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Mu-Zon Wu
- Department of Pathology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Kuan-Ting Kuo
- Department of Pathology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yung-Li Yang
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.,Department of Laboratory Medicine, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Huey-Ling Chen
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ming Chen
- Department of Medical Research, Center for Medical Genetics, Changhua Christian Hospital, Changhua, Taiwan.,Department of Genomic Medicine, Center for Medical Genetics, Changhua Christian Hospital, Changhua, Taiwan.,Department of Obstetrics and Gynecology, Changhua Christian Hospital, Changhua, Taiwan
| | - Yi-Ning Su
- Department of Research and Development, Sofiva Genomics Co., Ltd., Taipei, Taiwan.,Department of Gynecology and Maternity, Dianthus Maternal Fetal Medicine Clinic, Taipei, Taiwan.,Department of Obstetrics and Gynecology, School of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yiin-Jeng Jong
- Genetics Generation Advancement Corp. (GGA Corp.), Taipei, Taiwan
| | - Shih-Yao Liu
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Wen-Yu Tsai
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ni-Chung Lee
- Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan.,Department of Medical Genetics, National Taiwan University Hospital, Taipei, Taiwan
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10
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Destouni A, Dimitriadou E, Masset H, Debrock S, Melotte C, Van Den Bogaert K, Zamani Esteki M, Ding J, Voet T, Denayer E, de Ravel T, Legius E, Meuleman C, Peeraer K, Vermeesch JR. Genome-wide haplotyping embryos developing from 0PN and 1PN zygotes increases transferrable embryos in PGT-M. Hum Reprod 2019; 33:2302-2311. [PMID: 30383227 PMCID: PMC6238370 DOI: 10.1093/humrep/dey325] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Accepted: 10/14/2018] [Indexed: 02/06/2023] Open
Abstract
STUDY QUESTION Can genome-wide haplotyping increase success following preimplantation genetic testing for a monogenic disorder (PGT-M) by including zygotes with absence of pronuclei (0PN) or the presence of only one pronucleus (1PN)? SUMMARY ANSWER Genome-wide haplotyping 0PNs and 1PNs increases the number of PGT-M cycles reaching embryo transfer (ET) by 81% and the live-birth rate by 75%. WHAT IS KNOWN ALREADY Although a significant subset of 0PN and 1PN zygotes can develop into balanced, diploid and developmentally competent embryos, they are usually discarded because parental diploidy detection is not part of the routine work-up of PGT-M. STUDY DESIGN, SIZE, DURATION This prospective cohort study evaluated the pronuclear number in 2229 zygotes from 2337 injected metaphase II (MII) oocytes in 268 cycles. PGT-M for 0PN and 1PN embryos developing into Day 5/6 blastocysts with adequate quality for vitrification was performed in 42 of the 268 cycles (15.7%). In these 42 cycles, we genome-wide haplotyped 216 good quality embryos corresponding to 49 0PNs, 15 1PNs and 152 2PNs. The reported outcomes include parental contribution to embryonic ploidy, embryonic aneuploidy, genetic diagnosis for the monogenic disorder, cycles reaching ETs, pregnancy and live birth rates (LBR) for unaffected offspring. PARTICIPANTS/MATERIALS, SETTING, METHODS Blastomere DNA was whole-genome amplified and hybridized on the Illumina Human CytoSNP12V2.1.1 BeadChip arrays. Subsequently, genome-wide haplotyping and copy-number profiling was applied to investigate the embryonic genome architecture. Bi-parental, unaffected embryos were transferred regardless of their initial zygotic PN score. MAIN RESULTS AND THE ROLE OF CHANCE A staggering 75.51% of 0PN and 42.86% of 1PN blastocysts are diploid bi-parental allowing accurate genetic diagnosis for the monogenic disorder. In total, 31% (13/42) of the PGT-M cycles reached ET or could repeat ET with an unaffected 0PN or 1PN embryo. The LBR per initiated cycle increased from 9.52 to 16.67%. LIMITATIONS, REASONS FOR CAUTION The clinical efficacy of the routine inclusion of 0PN and 1PN zygotes in PGT-M cycles should be confirmed in larger cohorts from multicenter studies. WIDER IMPLICATIONS OF THE FINDINGS Genome-wide haplotyping allows the inclusion of 0PN and 1PN embryos and subsequently increases the cycles reaching ET following PGT-M and potentially PGT for aneuploidy (PGT-A) and chromosomal structural rearrangements (PGT-SR). Establishing measures of clinical efficacy could lead to an update of the ESHRE guidelines which advise against the use of these zygotes. STUDY FUNDING/COMPETING INTEREST(S) SymBioSys (PFV/10/016 and C1/018 to J.R.V. and T.V.), the Horizon 2020 WIDENLIFE: 692065 to J.R.V., T.V., E.D., A.D. and M.Z.E. M.Z.E., T.V. and J.R.V. co-invented haplarithmisis (‘Haplotyping and copy-number typing using polymorphic variant allelic frequencies’), which has been licensed to Agilent Technologies. H.M. is fully supported by the (FWO) (ZKD1543-ASP/16). The authors have no competing interests to declare.
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Affiliation(s)
- Aspasia Destouni
- Laboratory for Cytogenetics and Genome Research, Center for Human Genetics, University of Leuven, O&N I Herestraat 49, KU Leuven, Leuven, Belgium
| | - Eftychia Dimitriadou
- Department of Human Genetics, Center for Human Genetics, University Hospitals Leuven, O&N I Herestraat 49, KU Leuven, Leuven, Belgium
| | - Heleen Masset
- Laboratory for Cytogenetics and Genome Research, Center for Human Genetics, University of Leuven, O&N I Herestraat 49, KU Leuven, Leuven, Belgium
| | - Sophie Debrock
- University Hospitals Leuven, Leuven University Fertility Center, Herestraat 49, Leuven, Belgium
| | - Cindy Melotte
- Department of Human Genetics, Center for Human Genetics, University Hospitals Leuven, O&N I Herestraat 49, KU Leuven, Leuven, Belgium
| | - Kris Van Den Bogaert
- Department of Human Genetics, Center for Human Genetics, University Hospitals Leuven, O&N I Herestraat 49, KU Leuven, Leuven, Belgium
| | - Masoud Zamani Esteki
- Department of Human Genetics, Center for Human Genetics, University Hospitals Leuven, O&N I Herestraat 49, KU Leuven, Leuven, Belgium.,Maastricht University Medical Center, Department of Clinical Genetics, GROW School for Oncology and Developmental Biology, Maastricht, The Netherlands
| | - Jia Ding
- Laboratory for Cytogenetics and Genome Research, Center for Human Genetics, University of Leuven, O&N I Herestraat 49, KU Leuven, Leuven, Belgium
| | - Thiery Voet
- Laboratory of Reproductive Genomics, Center for Human Genetics, University of Leuven, O&N I Herestraat 49, KU Leuven, Leuven, Belgium.,Wellcome Sanger Institute, Wellcome Genome Campus Hinxton, Cambridgeshire, UK
| | - Ellen Denayer
- Department of Human Genetics, Center for Human Genetics, University Hospitals Leuven, O&N I Herestraat 49, KU Leuven, Leuven, Belgium
| | - Thomy de Ravel
- Department of Human Genetics, Center for Human Genetics, University Hospitals Leuven, O&N I Herestraat 49, KU Leuven, Leuven, Belgium
| | - Eric Legius
- Department of Human Genetics, Center for Human Genetics, University Hospitals Leuven, O&N I Herestraat 49, KU Leuven, Leuven, Belgium
| | - Christel Meuleman
- University Hospitals Leuven, Leuven University Fertility Center, Herestraat 49, Leuven, Belgium
| | - Karen Peeraer
- University Hospitals Leuven, Leuven University Fertility Center, Herestraat 49, Leuven, Belgium
| | - Joris R Vermeesch
- Laboratory for Cytogenetics and Genome Research, Center for Human Genetics, University of Leuven, O&N I Herestraat 49, KU Leuven, Leuven, Belgium.,Department of Human Genetics, Center for Human Genetics, University Hospitals Leuven, O&N I Herestraat 49, KU Leuven, Leuven, Belgium
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11
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Carson JC, Hoffner L, Conlin L, Parks WT, Fisher RA, Spinner N, Yatsenko SA, Bonadio J, Surti U. Diploid/triploid mixoploidy: A consequence of asymmetric zygotic segregation of parental genomes. Am J Med Genet A 2018; 176:2720-2732. [PMID: 30302900 DOI: 10.1002/ajmg.a.40646] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 08/14/2018] [Accepted: 09/04/2018] [Indexed: 01/16/2023]
Abstract
Triploidy is the presence of an extra haploid set of chromosomes and can exist in complete or mosaic form. The extra haploid set of chromosomes in triploid cells can be of maternal or paternal origin. Diploid/triploid mixoploidy is a unique form of triploid mosaicism that requires the aberrant segregation of entire parental genomes into distinct blastomere lineages (heterogoneic cell division) at the earliest zygotic divisions. Here we report on eight cases of diploid/triploid mixoploidy from our institution and conduct a comprehensive review of the literature. The parental origin of the extra set of chromosomes was determined in two cases; and, based on phenotypic evidence we propose the parental origin in the other cases. One case with complex mixoploidy appears to have a digynic origin in addition to the involvement of two different sperm. Of our eight cases, only one resulted in the birth of a live healthy child. The other pregnancies ended in miscarriage, elective termination of pregnancy, intrauterine fetal demise or neonatal death. A review of the literature and the results of our cases show that a preponderance of recognized cases of diploid/triploid mixoploidy has a digynic origin.
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Affiliation(s)
- Jason C Carson
- Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Lori Hoffner
- Magee-Womens Research Institute and Foundation, Pittsburgh, Pennsylvania
| | - Laura Conlin
- Department of Pathology, Children's Hospital of Philadelphia, The University of Pennsylvania, Philadelphia, Pennsylvania.,The Perelman School of Medicine, The University of Pennsylvania, Philadelphia, Pennsylvania
| | - W Tony Parks
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Rosemary A Fisher
- Trophoblastic Tumour Screening and Treatment Centre, Imperial College London, Charing Cross Hospital, London, United Kingdom
| | - Nancy Spinner
- Department of Pathology, Children's Hospital of Philadelphia, The University of Pennsylvania, Philadelphia, Pennsylvania.,The Perelman School of Medicine, The University of Pennsylvania, Philadelphia, Pennsylvania
| | - Svetlana A Yatsenko
- Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania.,Magee-Womens Research Institute and Foundation, Pittsburgh, Pennsylvania.,Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Jeffrey Bonadio
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Urvashi Surti
- Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania.,Magee-Womens Research Institute and Foundation, Pittsburgh, Pennsylvania.,Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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12
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Xie PY, Tang Y, Hu L, Ouyang Q, Gu YF, Gong F, Leng LZ, Zhang SP, Xiong B, Lu GX, Lin G. Identification of biparental and diploid blastocysts from monopronuclear zygotes with the use of a single-nucleotide polymorphism array. Fertil Steril 2018; 110:545-554.e5. [DOI: 10.1016/j.fertnstert.2018.04.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 04/06/2018] [Accepted: 04/24/2018] [Indexed: 01/09/2023]
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13
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Kalogiannidis I, Kalinderi K, Kalinderis M, Miliaras D, Tarlatzis B, Athanasiadis A. Recurrent complete hydatidiform mole: where we are, is there a safe gestational horizon? Opinion and mini-review. J Assist Reprod Genet 2018; 35:967-973. [PMID: 29737470 DOI: 10.1007/s10815-018-1202-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 04/25/2018] [Indexed: 02/07/2023] Open
Abstract
Benign hydatidiform mole, complete or partial, is the most common type of gestational trophoblastic disease (GTD) characterised by excessive trophoblastic proliferation and abnormal embryonic development. Although most complete hydatidiform moles (CHMs) are diploid androgenetic, a few cases of CHMs are biparental, characterised by recurrence and familial clustering. In these rare cases, mutations in NLRP7 or KHDC3L genes, associated with maternal imprinting defects, have been implicated. Current data regarding future pregnancy options in hydatidiform moles are discussed and our opinion is presented based on an incidence that took place in our hospital with a woman with consecutive molar pregnancies. In recurrent hydatidiform moles, DNA testing should be performed and when NLRP7 or KHDC3L mutation are detected, oocyte donation should be proposed as an option to maximise woman's chances of having a normal pregnancy.
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Affiliation(s)
- Ioannis Kalogiannidis
- 3rd Department of Obstetrics and Gynaecology, Hippokration General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Kallirhoe Kalinderi
- 3rd Department of Obstetrics and Gynaecology, Hippokration General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece. .,Department of General Biology, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece.
| | - Michail Kalinderis
- Department of Obstetrics and Gynaecology, King's College Hospital NHS Foundation Trust, Princess Royal University Hospital, Farnborough Common, BR6 8ND, Orpington, UK
| | - Dimosthenis Miliaras
- Laboratory of Histology & Embryology, Faculty of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Basil Tarlatzis
- 1st Department of Obstetrics & Gynaecology, Papageorgiou General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Apostolos Athanasiadis
- 3rd Department of Obstetrics and Gynaecology, Hippokration General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
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14
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Patiño-Parrado I, Gómez-Jiménez Á, López-Sánchez N, Frade JM. Strand-specific CpG hemimethylation, a novel epigenetic modification functional for genomic imprinting. Nucleic Acids Res 2017; 45:8822-8834. [PMID: 28605464 PMCID: PMC5587773 DOI: 10.1093/nar/gkx518] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 06/01/2017] [Indexed: 12/13/2022] Open
Abstract
Imprinted genes are regulated by allele-specific differentially DNA-methylated regions (DMRs). Epigenetic methylation of the CpGs constituting these DMRs is established in the germline, resulting in a 5-methylcytosine-specific pattern that is tightly maintained in somatic tissues. Here, we show a novel epigenetic mark, characterized by strand-specific hemimethylation of contiguous CpG sites affecting the germline DMR of the murine Peg3, but not Snrpn, imprinted domain. This modification is enriched in tetraploid cortical neurons, a cell type where evidence for a small proportion of formylmethylated CpG sites within the Peg3-controlling DMR is also provided. Single nucleotide polymorphism (SNP)-based transcriptional analysis indicated that these epigenetic modifications participate in the maintainance of the monoallelic expression pattern of the Peg3 imprinted gene. Our results unexpectedly demonstrate that the methylation pattern observed in DMRs controlling defined imprinting regions can be modified in somatic cells, resulting in a novel epigenetic modification that gives rise to strand-specific hemimethylated domains functional for genomic imprinting. We anticipate the existence of a novel molecular mechanism regulating the transition from fully methylated CpGs to strand-specific hemimethylated CpGs.
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Affiliation(s)
- Iris Patiño-Parrado
- Department of Molecular, Cellular, and Developmental Neurobiology, Cajal Institute, Consejo Superior de Investigaciones Científicas (IC-CSIC), Madrid E-28002, Spain
| | - Álvaro Gómez-Jiménez
- Department of Molecular, Cellular, and Developmental Neurobiology, Cajal Institute, Consejo Superior de Investigaciones Científicas (IC-CSIC), Madrid E-28002, Spain
| | - Noelia López-Sánchez
- Department of Molecular, Cellular, and Developmental Neurobiology, Cajal Institute, Consejo Superior de Investigaciones Científicas (IC-CSIC), Madrid E-28002, Spain
| | - José M Frade
- Department of Molecular, Cellular, and Developmental Neurobiology, Cajal Institute, Consejo Superior de Investigaciones Científicas (IC-CSIC), Madrid E-28002, Spain
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15
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Hui P, Buza N, Murphy KM, Ronnett BM. Hydatidiform Moles: Genetic Basis and Precision Diagnosis. ANNUAL REVIEW OF PATHOLOGY-MECHANISMS OF DISEASE 2017; 12:449-485. [DOI: 10.1146/annurev-pathol-052016-100237] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Pei Hui
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut 06510;
| | - Natalia Buza
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut 06510;
| | | | - Brigitte M. Ronnett
- Department of Pathology, The Johns Hopkins Medical Institutions, Baltimore, Maryland 21231
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16
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Epigenetic modifications at DMRs of placental genes are subjected to variations in normal gestation, pathological conditions and folate supplementation. Sci Rep 2017; 7:40774. [PMID: 28098215 PMCID: PMC5241688 DOI: 10.1038/srep40774] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Accepted: 12/01/2016] [Indexed: 01/13/2023] Open
Abstract
Invasive placentation and cancer development shares many similar molecular and epigenetic pathways. Paternally expressed, growth promoting genes (SNRPN, PEG10 and MEST) which are known to play crucial role in tumorogenesis, are not well studied during placentation. This study reports for the first time of the impact of gestational-age, pathological conditions and folic acid supplementation on dynamic nature of DNA and histone methylation present at their differentially methylated regions (DMRs). Here, we reported the association between low DNA methylation/H3K27me3 and higher expression of SNRPN, PEG10 and MEST in highly proliferating normal early gestational placenta. Molar and preeclamptic placental villi, exhibited aberrant changes in methylation levels at DMRs of these genes, leading to higher and lower expression of these genes, respectively, in reference to their respective control groups. Moreover, folate supplementation could induce gene specific changes in mRNA expression in placental cell lines. Further, MEST and SNRPN DMRs were observed to show the potential to act as novel fetal DNA markers in maternal plasma. Thus, variation in methylation levels at these DMRs regulate normal placentation and placental disorders. Additionally, the methylation at these DMRs might also be susceptible to folic acid supplementation and has the potential to be utilized in clinical diagnosis.
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17
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Killian JK, Dorssers LCJ, Trabert B, Gillis AJM, Cook MB, Wang Y, Waterfall JJ, Stevenson H, Smith WI, Noyes N, Retnakumar P, Stoop JH, Oosterhuis JW, Meltzer PS, McGlynn KA, Looijenga LHJ. Imprints and DPPA3 are bypassed during pluripotency- and differentiation-coupled methylation reprogramming in testicular germ cell tumors. Genome Res 2016; 26:1490-1504. [PMID: 27803193 PMCID: PMC5088592 DOI: 10.1101/gr.201293.115] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 09/14/2016] [Indexed: 12/12/2022]
Abstract
Testicular germ cell tumors (TGCTs) share germline ancestry but diverge phenotypically and clinically as seminoma (SE) and nonseminoma (NSE), the latter including the pluripotent embryonal carcinoma (EC) and its differentiated derivatives, teratoma (TE), yolk sac tumor (YST), and choriocarcinoma. Epigenomes from TGCTs may illuminate reprogramming in both normal development and testicular tumorigenesis. Herein we investigate pure-histological forms of 130 TGCTs for conserved and subtype-specific DNA methylation, including analysis of relatedness to pluripotent stem cell (ESC, iPSC), primordial germ cell (PGC), and differentiated somatic references. Most generally, TGCTs conserve PGC-lineage erasure of maternal and paternal genomic imprints and DPPA3 (also known as STELLA); however, like ESCs, TGCTs show focal recurrent imprinted domain hypermethylation. In this setting of shared physiologic erasure, NSEs harbor a malignancy-associated hypermethylation core, akin to that of a diverse cancer compendium. Beyond these concordances, we found subtype epigenetic homology with pluripotent versus differentiated states. ECs demonstrate a striking convergence of both CpG and CpH (non-CpG) methylation with pluripotent states; the pluripotential methyl-CpH signature crosses species boundaries and is distinct from neuronal methyl-CpH. EC differentiation to TE and YST entails reprogramming toward the somatic state, with loss of methyl-CpH but de novo methylation of pluripotency loci such as NANOG. Extreme methyl-depletion among SE reflects the PGC methylation nadir. Adjacent to TGCTs, benign testis methylation profiles are determined by spermatogenetic proficiency measured by Johnsen score. In sum, TGCTs share collective entrapment in a PGC-like state of genomic-imprint and DPPA3 erasure, recurrent hypermethylation of cancer-associated targets, and subtype-dependent pluripotent, germline, or somatic methylation.
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Affiliation(s)
- J Keith Killian
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Lambert C J Dorssers
- Department of Pathology, Erasmus MC-University Medical Center, Rotterdam, 3015, The Netherlands
| | - Britton Trabert
- Hormonal and Reproductive Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Ad J M Gillis
- Department of Pathology, Erasmus MC-University Medical Center, Rotterdam, 3015, The Netherlands
| | - Michael B Cook
- Hormonal and Reproductive Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Yonghong Wang
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Joshua J Waterfall
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Holly Stevenson
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - William I Smith
- Suburban Hospital Department of Pathology, Bethesda, Maryland 20814, USA
| | - Natalia Noyes
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Parvathy Retnakumar
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - J Hans Stoop
- Department of Pathology, Erasmus MC-University Medical Center, Rotterdam, 3015, The Netherlands
| | - J Wolter Oosterhuis
- Department of Pathology, Erasmus MC-University Medical Center, Rotterdam, 3015, The Netherlands
| | - Paul S Meltzer
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Katherine A McGlynn
- Hormonal and Reproductive Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA
| | - Leendert H J Looijenga
- Department of Pathology, Erasmus MC-University Medical Center, Rotterdam, 3015, The Netherlands
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18
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Kawasaki K, Kondoh E, Minamiguchi S, Matsuda F, Higasa K, Fujita K, Mogami H, Chigusa Y, Konishi I. Live-born diploid fetus complicated with partial molar pregnancy presenting with pre-eclampsia, maternal anemia, and seemingly huge placenta: A rare case of confined placental mosaicism and literature review. J Obstet Gynaecol Res 2016; 42:911-7. [DOI: 10.1111/jog.13025] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Revised: 02/10/2016] [Accepted: 03/12/2016] [Indexed: 12/16/2022]
Affiliation(s)
- Kaoru Kawasaki
- Department of Gynecology and Obstetrics; Kyoto University; Kyoto Japan
| | - Eiji Kondoh
- Department of Gynecology and Obstetrics; Kyoto University; Kyoto Japan
| | | | | | | | - Kohei Fujita
- Department of Gynecology and Obstetrics; Kyoto University; Kyoto Japan
| | - Haruta Mogami
- Department of Gynecology and Obstetrics; Kyoto University; Kyoto Japan
| | | | - Ikuo Konishi
- Department of Gynecology and Obstetrics; Kyoto University; Kyoto Japan
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19
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Ogawa H, Takyu R, Morimoto H, Toei S, Sakon H, Goto S, Moriya S, Kono T. Cell proliferation potency is independent of FGF4 signaling in trophoblast stem cells derived from androgenetic embryos. J Reprod Dev 2015; 62:51-8. [PMID: 26498204 PMCID: PMC4768778 DOI: 10.1262/jrd.2015-097] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We previously established trophoblast stem cells from mouse androgenetic embryos (AGTS cells). In this study, to further characterize AGTS cells, we compared cell proliferation activity between trophoblast stem (TS) cells and AGTS cells under fibroblast growth factor 4 (FGF4) signaling. TS cells continued to proliferate and maintained mitotic cell division in the presence of FGF4. After FGF4 deprivation, the cell proliferation stopped, the rate of M-phase cells decreased, and trophoblast giant cells formed. In contrast, some of AGTS cells continued to proliferate, and the rate of M-phase cells did not decrease after FGF4 deprivation, although the other cells differentiated into giant cells. RO3306, an ATP competitor that selectively inhibits CDK1, inhibited the cell proliferation of both TS and AGTS cells. Under RO3306 treatment, cell death was induced in AGTS cells but not in TS cells. These results indicate that RO3306 caused TS cells to shift mitotic cell division to endoreduplication but that some of AGTS cells did not shift to endoreduplication and induced cell death. In conclusion, the paternal genome facilitated the proliferation of trophoblast cells without FGF4 signaling.
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Affiliation(s)
- Hidehiko Ogawa
- Department of Bioscience, Tokyo University of Agriculture, Tokyo 156-8502, Japan
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20
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Lepshin MV, Sazhenova EA, Lebedev IN. Multiple epimutations in imprinted genes in the human genome and congenital disorders. RUSS J GENET+ 2014. [DOI: 10.1134/s1022795414030053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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21
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Chen KH, Hsu SC, Chen HY, Ng KF, Chen TC. Utility of fluorescence in situ hybridization for ploidy and p57 immunostaining in discriminating hydatidiform moles. Biochem Biophys Res Commun 2014; 446:555-60. [DOI: 10.1016/j.bbrc.2014.03.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Accepted: 03/02/2014] [Indexed: 11/28/2022]
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22
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Girardot M, Feil R, Llères D. Epigenetic deregulation of genomic imprinting in humans: causal mechanisms and clinical implications. Epigenomics 2013; 5:715-28. [DOI: 10.2217/epi.13.66] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Mammalian genes controlled by genomic imprinting play important roles in development and diverse postnatal processes. A growing number of congenital disorders have been linked to genomic imprinting. Each of these is caused by perturbed gene expression at one principal imprinted domain. Some imprinting disorders, including the Prader–Willi and Angelman syndromes, are caused almost exclusively by genetic mutations. In several others, including the Beckwith–Wiedemann and Silver–Russell growth syndromes, and transient neonatal diabetes mellitus, imprinted expression is perturbed mostly by epigenetic alterations at ‘imprinting control regions’ and at other specific regulatory sequences. In a minority of these patients, DNA methylation is altered at multiple imprinted loci, suggesting that common trans-acting factors are affected. Here, we review the epimutations involved in congenital imprinting disorders and the associated clinical features. Trans-acting factors known to be causally involved are discussed and other trans-acting factors that are potentially implicated are also presented.
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Affiliation(s)
- Michael Girardot
- Institute of Molecular Genetics (IGMM), CNRS UMR-5535, 1919 Route de Mende, 34293 Montpellier, France
- Universities of Montpellier I & II, Montpellier, France
| | - Robert Feil
- Institute of Molecular Genetics (IGMM), CNRS UMR-5535, 1919 Route de Mende, 34293 Montpellier, France
| | - David Llères
- Institute of Molecular Genetics (IGMM), CNRS UMR-5535, 1919 Route de Mende, 34293 Montpellier, France
- Universities of Montpellier I & II, Montpellier, France
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The consequences of uniparental disomy and copy number neutral loss-of-heterozygosity during human development and cancer. Biol Cell 2011; 103:303-17. [PMID: 21651501 DOI: 10.1042/bc20110013] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
UPD (uniparental disomy) describes the inheritance of a pair of chromosomes from only one parent. Mechanisms that lead to UPD include trisomy rescue, gamete complementation, monosomy rescue and somatic recombination. Most of these mechanisms can involve aberrant chromosomes, particularly isochromosomes and Robertsonian translocations. In the last decade, the number of UPD cases reported in the literature has increased exponentially. This is partly due to the advances in genomic technologies that have allowed for high-resolution SNP (single nucleotide polymorphism) studies, which have complemented traditional methods relying on polymorphic microsatellite markers. In this review, we discuss aberrant cellular mechanisms leading to UPD and their impact on gene expression. Special emphasis is placed on the unmasking of mutant recessive alleles and the disruption of imprinted gene dosage, which give rise to specific and recurrent imprinting phenotypes. Finally, we discuss how copy number maps determined from SNP array datasets have helped identify not only deletions and duplications but also recurrent copy number neutral regions of loss-of-heterozygosity, which have been reported in many cancer types and that may constitute an important driving force in cancer. These tiny regions of UPD also alter imprinted gene dosage, which may have cumulative tumourgenic effects in addition to that of unmasking homozygous cancer-associated mutations.
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Nelissen ECM, van Montfoort APA, Dumoulin JCM, Evers JLH. Epigenetics and the placenta. Hum Reprod Update 2010; 17:397-417. [PMID: 20959349 DOI: 10.1093/humupd/dmq052] [Citation(s) in RCA: 254] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND The placenta is of utmost importance for intrauterine fetal development and growth. Deregulation of placentation can lead to adverse outcomes for both mother and fetus, e.g. gestational trophoblastic disease (GTD), pre-eclampsia and fetal growth retardation. A significant factor in placental development and function is epigenetic regulation. METHODS This review summarizes the current knowledge in the field of epigenetics in relation to placental development and function. Relevant studies were identified by searching PubMed, Medline and reference sections of all relevant studies and reviews. RESULTS Epigenetic regulation of the placenta evolves during preimplantation development and further gestation. Epigenetic marks, like DNA methylation, histone modifications and non-coding RNAs, affect gene expression patterns. These expression patterns, including the important parent-of-origin-dependent gene expression resulting from genomic imprinting, play a pivotal role in proper fetal and placental development. Disturbed placental epigenetics has been demonstrated in cases of intrauterine growth retardation and small for gestational age, and also appears to be involved in the pathogenesis of pre-eclampsia and GTD. Several environmental effects have been investigated so far, e.g. ethanol, oxygen tension as well as the effect of several aspects of assisted reproduction technologies on placental epigenetics. CONCLUSIONS Studies in both animals and humans have made it increasingly clear that proper epigenetic regulation of both imprinted and non-imprinted genes is important in placental development. Its disturbance, which can be caused by various environmental factors, can lead to abnormal placental development and function with possible consequences for maternal morbidity, fetal development and disease susceptibility in later life.
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Affiliation(s)
- Ewka C M Nelissen
- Department of Obstetrics and Gynaecology, Research Institute Growth & Development (GROW), Center for Reproductive Medicine, Maastricht University Medical Centre, MUMC+, PO Box 5800, 6202 AZ Maastricht, The Netherlands.
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Baasanjav B, Usui H, Kihara M, Kaku H, Nakada E, Tate S, Mitsuhashi A, Matsui H, Shozu M. The risk of post-molar gestational trophoblastic neoplasia is higher in heterozygous than in homozygous complete hydatidiform moles. Hum Reprod 2010; 25:1183-91. [PMID: 20208060 DOI: 10.1093/humrep/deq052] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Complete hydatidiform mole (CHM) is a high-risk pregnancy for gestational trophoblastic neoplasia (GTN). Patients with CHM have a 10-30% chance of trophoblastic sequelae. CHM includes androgenic homozygous (monospermic) and androgenic heterozygous (dispermic) moles. It is controversial whether the risk of GTN is higher with heterozygous than with homozygous CHM. A prospective cohort study was conducted to assess risk of GTN in homozygous and heterozygous CHM using short tandem repeat (STR) polymorphisms, and a meta-analysis of previous reports. METHODS Twenty-eight consecutive molar pregnancies were evacuated and followed by regular hCG measurements to detect GTN. Persistent GTN was diagnosed according to the International Federation of Gynecology and Obstetrics 2000 system. Cytogenesis of the mole was determined by STR polymorphisms of molar tissue and parental blood. A meta-analysis of the GTN rate from previous reports was conducted using Mantel-Haenszel methods. RESULTS Of 28 molar pregnancies, 24 were homozygous and three were heterozygous CHM. The remaining mole was diandric triploidy (a partial hydatidiform mole). Of the 24 homozygous CHMs, six (25%) cases developed GTN and received chemotherapy. Meanwhile, all three cases (100%) of heterozygous mole developed GTN and needed chemotherapy. The GTN risk was higher in heterozygous (P = 0.029, Fisher's exact test) than homozygous moles. A systematic review revealed only five previous reports (with more than 15 cytogenetically diagnosed cases), and the pooled relative risk of persistent GTN for heterozygous mole was not significant (odds ratio, 2.0; 95% confidence interval, 0.98-4.07). CONCLUSIONS Heterozygous CHM had a higher risk for GTN than homozygous CHM.
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Affiliation(s)
- B Baasanjav
- Department of Reproductive Medicine, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
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Kanter D, Lindheimer MD, Wang E, Borromeo RG, Bousfield E, Karumanchi SA, Stillman IE. Angiogenic dysfunction in molar pregnancy. Am J Obstet Gynecol 2010; 202:184.e1-5. [PMID: 19922899 PMCID: PMC2832058 DOI: 10.1016/j.ajog.2009.09.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2009] [Revised: 07/11/2009] [Accepted: 09/10/2009] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Molar pregnancy is associated with very early-onset preeclampsia. Since excessive circulating antiangiogenic factors may play a pathogenic role in preeclampsia, we hypothesized that molar placentas produce more antiangiogenic proteins than normal placentas. STUDY DESIGN This retrospective case-control study used a semiquantitative immunohistochemical technique to compare histologic sections of molar placentas to normal controls. Tissue slides were treated with 2 antisera: one recognized the antiangiogenic markers fms-like tyrosine kinase receptor 1 (Flt1) and its soluble form (sFlt1), while the other recognized vascular endothelial marker CD31. Stain intensity was graded from 1+ (strong focal staining) to 4+ (91-100% staining). RESULTS Molar placentas (n = 19) showed significantly more staining than controls (n = 16) for Flt/sFlt1 (P < .0001). CONCLUSION There was a significant difference in Flt1/sFlt1 immunostaining intensity when molar placentas were compared to controls. This supports a hypothesis that the phenotype of preeclampsia in molar pregnancy may result from trophoblasts overproducing at least 1 antiangiogenic protein.
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Affiliation(s)
- David Kanter
- Department of Obstetrics and Gynecology, The Pritzker School of Medicine, University of Chicago, Chicago, IL, USA
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van der Heijden GW, van den Berg IM, Baart EB, Derijck AAHA, Martini E, de Boer P. Parental origin of chromatin in human monopronuclear zygotes revealed by asymmetric histone methylation patterns, differs between IVF and ICSI. Mol Reprod Dev 2009; 76:101-8. [PMID: 18481364 DOI: 10.1002/mrd.20933] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In mouse zygotes, many post-translational histone modifications are asymmetrically present in male and female pronuclei. We investigated whether this principle could be used to determine the genetic composition of monopronuclear human zygotes in conventional IVF and ICSI. First we determined whether male female asymmetry is conserved from mouse to human by staining polypronuclear zygotes with antibodies against a subset of histone N-tail post-translational modifications. To analyze human monopronuclear zygotes, a modification, H3K9me3, was selected that is present in the maternal chromatin. After IVF a total of 45 monopronuclear zygotes were obtained. In 39 (87%) of zygotes a nonuniform staining pattern was observed, proof of a bi-parental origin and assumed to result into a diploid conception. Two zygotes showed no staining for the modification, indicating that the single pronucleus was of paternal origin. Four zygotes contained only maternally derived chromatin. ICSI-derived monopronuclear zygotes (n = 33) could also be divided into three groups based on the staining pattern of their chromatin: (1) of maternal origin (n = 15), (2) of paternal origin (n = 8) or (3) consisting of two chromatin domains as dominating in IVF (n = 10). Our data show that monopronuclear zygotes originating from IVF generally arise through fusion of parental chromatin after sperm penetration. Monopronuclear zygotes derived from ICSI in most cases contain uni-parental chromatin. The fact that chromatin was of paternal origin in 24% of ICSI and in 4% of the IVF zygotes confirms earlier results obtained by FISH on cleavage stages. Our findings are of clinical importance in IVF and ICSI practice.
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Affiliation(s)
- G W van der Heijden
- Department of Obstetrics and Gynaecology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
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Lebedev IN, Sazhenova EA. Epimutations of imprinted genes in the human genome: Classification, causes, association with hereditary pathology. RUSS J GENET+ 2008. [DOI: 10.1134/s1022795408100062] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Psychosis and autism as diametrical disorders of the social brain. Behav Brain Sci 2008; 31:241-61; discussion 261-320. [DOI: 10.1017/s0140525x08004214] [Citation(s) in RCA: 379] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
AbstractAutistic-spectrum conditions and psychotic-spectrum conditions (mainly schizophrenia, bipolar disorder, and major depression) represent two major suites of disorders of human cognition, affect, and behavior that involve altered development and function of the social brain. We describe evidence that a large set of phenotypic traits exhibit diametrically opposite phenotypes in autistic-spectrum versus psychotic-spectrum conditions, with a focus on schizophrenia. This suite of traits is inter-correlated, in that autism involves a general pattern of constrained overgrowth, whereas schizophrenia involves undergrowth. These disorders also exhibit diametric patterns for traits related to social brain development, including aspects of gaze, agency, social cognition, local versus global processing, language, and behavior. Social cognition is thus underdeveloped in autistic-spectrum conditions and hyper-developed on the psychotic spectrum.;>We propose and evaluate a novel hypothesis that may help to explain these diametric phenotypes: that the development of these two sets of conditions is mediated in part by alterations of genomic imprinting. Evidence regarding the genetic, physiological, neurological, and psychological underpinnings of psychotic-spectrum conditions supports the hypothesis that the etiologies of these conditions involve biases towards increased relative effects from imprinted genes with maternal expression, which engender a general pattern of undergrowth. By contrast, autistic-spectrum conditions appear to involve increased relative bias towards effects of paternally expressed genes, which mediate overgrowth. This hypothesis provides a simple yet comprehensive theory, grounded in evolutionary biology and genetics, for understanding the causes and phenotypes of autistic-spectrum and psychotic-spectrum conditions.
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30
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Lebedev IN, Puzyrev VP. Epigenetic perspectives of safety in assisted reproductive technologies. RUSS J GENET+ 2007. [DOI: 10.1134/s1022795407090013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Wagschal A, Feil R. Genomic imprinting in the placenta. Cytogenet Genome Res 2006; 113:90-8. [PMID: 16575167 DOI: 10.1159/000090819] [Citation(s) in RCA: 102] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2005] [Accepted: 07/21/2005] [Indexed: 12/22/2022] Open
Abstract
Genomic imprinting is an epigenetic mechanism that is important for the development and function of the extra-embryonic tissues in the mouse. Remarkably all the autosomal genes which were found to be imprinted in the trophoblast (placenta) only are active on the maternal and repressed on the paternal allele. It was shown for several of these genes that their paternal silencing is not dependent on DNA methylation, at least not in its somatic maintenance. Rather, recent studies in the mouse suggest that placenta-specific imprinting involves repressive histone modifications and non-coding RNAs. This mechanism of autosomal imprinting is similar to imprinted X chromosome inactivation in the placenta. Although the underlying reasons remain to be explored, this suggests that imprinting in the placenta and imprinted X inactivation are evolutionarily related.
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Affiliation(s)
- A Wagschal
- Institute of Molecular Genetics, CNRS and University of Montpellier II, Montpellier, France
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Rodenhiser D, Mann M. Epigenetics and human disease: translating basic biology into clinical applications. CMAJ 2006; 174:341-8. [PMID: 16446478 PMCID: PMC1373719 DOI: 10.1503/cmaj.050774] [Citation(s) in RCA: 270] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Epigenetics refers to the study of heritable changes in gene expression that occur without a change in DNA sequence. Research has shown that epigenetic mechanisms provide an "extra" layer of transcriptional control that regulates how genes are expressed. These mechanisms are critical components in the normal development and growth of cells. Epigenetic abnormalities have been found to be causative factors in cancer, genetic disorders and pediatric syndromes as well as contributing factors in autoimmune diseases and aging. In this review, we examine the basic principles of epigenetic mechanisms and their contribution to human health as well as the clinical consequences of epigenetic errors. In addition, we address the use of epigenetic pathways in new approaches to diagnosis and targeted treatments across the clinical spectrum.
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Affiliation(s)
- David Rodenhiser
- EpiGenWestern Research Group, Children's Health Research Institute, London, Ont.
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Arnaud P, Hata K, Kaneda M, Li E, Sasaki H, Feil R, Kelsey G. Stochastic imprinting in the progeny of Dnmt3L−/− females. Hum Mol Genet 2006; 15:589-98. [PMID: 16403808 DOI: 10.1093/hmg/ddi475] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The cis-acting regulatory sequences of imprinted genes are subject to germline-specific epigenetic modifications, the imprints, so that this class of genes is exclusively expressed from either the paternal or maternal allele in offspring. How genes are differentially marked in the germlines remains largely to be elucidated. Although the exact nature of the mark is not fully known, DNA methylation [at differentially methylated regions (DMRs)] appears to be a major, functional component. Recent data in mice indicate that Dnmt3a, an enzyme with de novo DNA methyltransferase activity, and the related protein Dnmt3L are required for methylation of imprinted loci in germ cells. Maternal methylation imprints, in particular, are strictly dependent on the presence of Dnmt3L. Here, we show that, unexpectedly, methylation imprints can be present in some progeny of Dnmt3L(-/-) females. This incomplete penetrance of the effect of Dnmt3L deficiency in oocytes is neither embryo nor locus specific, but stochastic. We establish that, when it occurs, methylation is present in both embryo and extra-embryonic tissues and results in a functional imprint. This suggests that this maternal methylation is inherited, directly or indirectly, from the gamete. Our results indicate that in the absence of Dnmt3L, factors such as Dnmt3a and possibly others can act alone to mark individual DMRs. However, establishment of appropriate maternal imprints at all loci does require a combination of all factors. This observation can provide a basis to understand mechanisms involved in some sporadic cases of imprinting-related diseases and polymorphic imprinting in human.
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Affiliation(s)
- Philippe Arnaud
- Institute of Molecular Genetics, CNRS UMR-5535 and University of Montpellier-II, 1919 Route de Mende, 34090 Montpellier, France.
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Arnaud P, Feil R. Epigenetic deregulation of genomic imprinting in human disorders and following assisted reproduction. ACTA ACUST UNITED AC 2005; 75:81-97. [PMID: 16035043 DOI: 10.1002/bdrc.20039] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Imprinted genes play important roles in the regulation of growth and development, and several have been shown to influence behavior. Their allele-specific expression depends on inheritance from either the mother or the father, and is regulated by "imprinting control regions" (ICRs). ICRs are controlled by DNA methylation, which is present on one of the two parental alleles only. These allelic methylation marks are established in either the female or the male germline, following the erasure of preexisting DNA methylation in the primordial germ cells. After fertilization, the allelic DNA methylation at ICRs is maintained in all somatic cells of the developing embryo. This epigenetic "life cycle" of imprinting (germline erasure, germline establishment, and somatic maintenance) can be disrupted in several human diseases, including Beckwith-Wiedemann syndrome (BWS), Prader-Willi syndrome (PWS), Angelman syndrome and Hydatidiform mole. In the neurodevelopmental Rett syndrome, the way the ICR mediates imprinted expression is perturbed. Recent studies indicate that assisted reproduction technologies (ART) can sometimes affect the epigenetic cycle of imprinting as well, and that this gives rise to imprinting disease syndromes. This finding warrants careful monitoring of the epigenetic effects, and absolute risks, of currently used and novel reproduction technologies.
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Affiliation(s)
- Philippe Arnaud
- Institute of Molecular Genetics, Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier II, 1919 Route de Mende, 34293 Montpellier Cedex 05, France.
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