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Lawson JM, Salem SE, Miller D, Kahler A, van den Boer WJ, Shilton CA, Sever T, Mouncey RR, Ward J, Hampshire DJ, Foote AK, Bryan JS, Juras R, Pynn OD, Davis BW, Bellone RR, Raudsepp T, de Mestre AM. Naturally occurring horse model of miscarriage reveals temporal relationship between chromosomal aberration type and point of lethality. Proc Natl Acad Sci U S A 2024; 121:e2405636121. [PMID: 39102548 DOI: 10.1073/pnas.2405636121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Accepted: 06/04/2024] [Indexed: 08/07/2024] Open
Abstract
Chromosomal abnormalities are a common cause of human miscarriage but rarely reported in any other species. As a result, there are currently inadequate animal models available to study this condition. Horses present one potential model since mares receive intense gynecological care. This allowed us to investigate the prevalence of chromosomal copy number aberrations in 256 products of conception (POC) in a naturally occurring model of pregnancy loss (PL). Triploidy (three haploid sets of chromosomes) was the most common aberration, found in 42% of POCs following PL over the embryonic period. Over the same period, trisomies and monosomies were identified in 11.6% of POCs and subchromosomal aberrations in 4.2%. Whole and subchromosomal aberrations involved 17 autosomes, with chromosomes 3, 4, and 20 having the highest number of aberrations. Triploid fetuses had clear gross developmental anomalies of the brain. Collectively, data demonstrate that alterations in chromosome number contribute to PL similarly in women and mares, with triploidy the dominant ploidy type over the key period of organogenesis. These findings, along with highly conserved synteny between human and horse chromosomes, similar gestation lengths, and the shared single greatest risk for PL being advancing maternal age, provide strong evidence for the first animal model to truly recapitulate many key features of human miscarriage arising due to chromosomal aberrations, with shared benefits for humans and equids.
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Affiliation(s)
- Jessica M Lawson
- Department of Pathobiology and Population Sciences, Royal Veterinary College, London AL9 7TA, UK
| | - Shebl E Salem
- Department of Biomedical Sciences, Baker Institute for Animal Health, Cornell University, Ithaca, NY 14853
| | - Donald Miller
- Department of Biomedical Sciences, Baker Institute for Animal Health, Cornell University, Ithaca, NY 14853
| | - Anne Kahler
- Department of Pathobiology and Population Sciences, Royal Veterinary College, London AL9 7TA, UK
| | - Wilhelmina J van den Boer
- Department of Biomedical Sciences, Baker Institute for Animal Health, Cornell University, Ithaca, NY 14853
| | - Charlotte A Shilton
- Department of Pathobiology and Population Sciences, Royal Veterinary College, London AL9 7TA, UK
| | - Tia Sever
- Department of Biomedical Sciences, Baker Institute for Animal Health, Cornell University, Ithaca, NY 14853
| | - Rebecca R Mouncey
- Department of Pathobiology and Population Sciences, Royal Veterinary College, London AL9 7TA, UK
| | - Jenna Ward
- Department of Biomedical Sciences, Baker Institute for Animal Health, Cornell University, Ithaca, NY 14853
| | - Daniel J Hampshire
- Department of Pathobiology and Population Sciences, Royal Veterinary College, London AL9 7TA, UK
| | - Alastair K Foote
- Rossdales Laboratories, Rossdales Ltd, Beaufort Cottages Stables, Newmarket CB8 8JS, UK
| | - Jill S Bryan
- Rossdales Laboratories, Rossdales Ltd, Beaufort Cottages Stables, Newmarket CB8 8JS, UK
| | - Rytis Juras
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843
| | - Oliver D Pynn
- Rossdales Veterinary Surgeons, Rossdales Ltd, Beaufort Cottages Stables, Newmarket CB8 8JS, UK
| | - Brian W Davis
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843
| | - Rebecca R Bellone
- Department of Population Health and Reproduction, Veterinary Genetics Laboratory, School of Veterinary Medicine, University of California, Davis, CA 95617
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, CA 95617
| | - Terje Raudsepp
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843
| | - Amanda M de Mestre
- Department of Biomedical Sciences, Baker Institute for Animal Health, Cornell University, Ithaca, NY 14853
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Eggenhuizen GM, van Veen S, van Koetsveld N, Go ATJI, Diderich KEM, Joosten M, van den Born M, Srebniak MI, Van Opstal D. Confined placental mosaicism: Distribution of chromosomally abnormal cells over the term placenta. Placenta 2024; 154:60-65. [PMID: 38901306 DOI: 10.1016/j.placenta.2024.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 06/12/2024] [Accepted: 06/15/2024] [Indexed: 06/22/2024]
Abstract
OBJECTIVE Non-invasive prenatal testing (NIPT) investigates placental DNA and may detect confined placental mosaicism (CPM). The aim of this study was to confirm CPM in the term placenta in cases with abnormal NIPT but normal follow-up cytogenetic studies of fetus and mother. Additionally we examined the distribution of abnormal cells over the placenta. METHODS Four chorionic villus (CV) biopsies from four placental quadrants were requested in cases where CPM was assumed. Both cell lineages of the CV, cytotrophoblast (CTB) and mesenchymal core (MC), were analyzed separately with SNP array. RESULTS The chromosome aberration was confirmed in 67 % of the placentas. Three quarters of the CTB and MC biopsies from these mosaic placentas were uniformly normal (57 %) or abnormal (20 %), and a minority showed mosaicism. Among 16 cases of CPM where first trimester CV were examined as well, 11 had chromosomally normal results during pregnancy. DISCUSSION Cytogenetic investigations of term placental biopsies suspected to be affected with CPM did not reveal the chromosome aberration in one third of the placentas. This is caused by the patchy pattern in which chromosomally abnormal cells are distributed over the placenta with the majority of the biopsies being uniformly normal. Further CPM research, including its clinical impact, requires the analysis of more than four biopsies to get insight into the extent of the affected part. Moreover, a subset of CPM type 1 and 3 seems to be only detectable with NIPT and not with first trimester CVS.
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Affiliation(s)
- G M Eggenhuizen
- Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center, 3015 CN, Rotterdam, the Netherlands.
| | - S van Veen
- Department of Clinical Genetics, Erasmus MC, University Medical Center, 3015 CN, Rotterdam, the Netherlands
| | - N van Koetsveld
- Department of Clinical Genetics, Erasmus MC, University Medical Center, 3015 CN, Rotterdam, the Netherlands
| | - A T J I Go
- Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center, 3015 CN, Rotterdam, the Netherlands
| | - K E M Diderich
- Department of Clinical Genetics, Erasmus MC, University Medical Center, 3015 CN, Rotterdam, the Netherlands
| | - M Joosten
- Department of Clinical Genetics, Erasmus MC, University Medical Center, 3015 CN, Rotterdam, the Netherlands
| | - M van den Born
- Department of Clinical Genetics, Erasmus MC, University Medical Center, 3015 CN, Rotterdam, the Netherlands
| | - M I Srebniak
- Department of Clinical Genetics, Erasmus MC, University Medical Center, 3015 CN, Rotterdam, the Netherlands
| | - D Van Opstal
- Department of Clinical Genetics, Erasmus MC, University Medical Center, 3015 CN, Rotterdam, the Netherlands
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Waldvogel SM, Posey JE, Goodell MA. Human embryonic genetic mosaicism and its effects on development and disease. Nat Rev Genet 2024:10.1038/s41576-024-00715-z. [PMID: 38605218 DOI: 10.1038/s41576-024-00715-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/22/2024] [Indexed: 04/13/2024]
Abstract
Nearly every mammalian cell division is accompanied by a mutational event that becomes fixed in a daughter cell. When carried forward to additional cell progeny, a clone of variant cells can emerge. As a result, mammals are complex mosaics of clones that are genetically distinct from one another. Recent high-throughput sequencing studies have revealed that mosaicism is common, clone sizes often increase with age and specific variants can affect tissue function and disease development. Variants that are acquired during early embryogenesis are shared by multiple cell types and can affect numerous tissues. Within tissues, variant clones compete, which can result in their expansion or elimination. Embryonic mosaicism has clinical implications for genetic disease severity and transmission but is likely an under-recognized phenomenon. To better understand its implications for mosaic individuals, it is essential to leverage research tools that can elucidate the mechanisms by which expanded embryonic variants influence development and disease.
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Affiliation(s)
- Sarah M Waldvogel
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
- Medical Scientist Training Program, Baylor College of Medicine, Houston, TX, USA
- Graduate Program in Cancer and Cell Biology, Baylor College of Medicine, Houston, TX, USA
| | - Jennifer E Posey
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Margaret A Goodell
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA.
- Graduate Program in Cancer and Cell Biology, Baylor College of Medicine, Houston, TX, USA.
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
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van der Made CI, Kersten S, Chorin O, Engelhardt KR, Ramakrishnan G, Griffin H, Schim van der Loeff I, Venselaar H, Rothschild AR, Segev M, Schuurs-Hoeijmakers JHM, Mantere T, Essers R, Esteki MZ, Avital AL, Loo PS, Simons A, Pfundt R, Warris A, Seyger MM, van de Veerdonk FL, Netea MG, Slatter MA, Flood T, Gennery AR, Simon AJ, Lev A, Frizinsky S, Barel O, van der Burg M, Somech R, Hambleton S, Henriet SSV, Hoischen A. Expanding the PRAAS spectrum: De novo mutations of immunoproteasome subunit β-type 10 in six infants with SCID-Omenn syndrome. Am J Hum Genet 2024; 111:791-804. [PMID: 38503300 PMCID: PMC11023912 DOI: 10.1016/j.ajhg.2024.02.013] [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: 10/05/2023] [Revised: 02/22/2024] [Accepted: 02/22/2024] [Indexed: 03/21/2024] Open
Abstract
Mutations in proteasome β-subunits or their chaperone and regulatory proteins are associated with proteasome-associated autoinflammatory disorders (PRAAS). We studied six unrelated infants with three de novo heterozygous missense variants in PSMB10, encoding the proteasome β2i-subunit. Individuals presented with T-B-NK± severe combined immunodeficiency (SCID) and clinical features suggestive of Omenn syndrome, including diarrhea, alopecia, and desquamating erythematous rash. Remaining T cells had limited T cell receptor repertoires, a skewed memory phenotype, and an elevated CD4/CD8 ratio. Bone marrow examination indicated severely impaired B cell maturation with limited V(D)J recombination. All infants received an allogeneic stem cell transplant and exhibited a variety of severe inflammatory complications thereafter, with 2 peri-transplant and 2 delayed deaths. The single long-term transplant survivor showed evidence for genetic rescue through revertant mosaicism overlapping the affected PSMB10 locus. The identified variants (c.166G>C [p.Asp56His] and c.601G>A/c.601G>C [p.Gly201Arg]) were predicted in silico to profoundly disrupt 20S immunoproteasome structure through impaired β-ring/β-ring interaction. Our identification of PSMB10 mutations as a cause of SCID-Omenn syndrome reinforces the connection between PRAAS-related diseases and SCID.
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Affiliation(s)
- Caspar I van der Made
- Department of Human Genetics, Radboud University Medical Center and Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands; Department of Internal Medicine and Radboud Center for Infectious Diseases (RCI), Radboud University Medical Centre and Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands
| | - Simone Kersten
- Department of Human Genetics, Radboud University Medical Center and Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands; Department of Internal Medicine and Radboud Center for Infectious Diseases (RCI), Radboud University Medical Centre and Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands
| | - Odelia Chorin
- Institute of Rare Diseases, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel; Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Karin R Engelhardt
- Newcastle University Translational and Clinical Research Institute, Newcastle upon Tyne, UK
| | - Gayatri Ramakrishnan
- Department of Medical BioSciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Helen Griffin
- Newcastle University Translational and Clinical Research Institute, Newcastle upon Tyne, UK
| | - Ina Schim van der Loeff
- Newcastle University Translational and Clinical Research Institute, Newcastle upon Tyne, UK; Paediatric Immunology and Infectious Diseases, Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Hanka Venselaar
- Department of Medical BioSciences, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Annick Raas Rothschild
- Institute of Rare Diseases, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel; Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Meirav Segev
- Institute of Rare Diseases, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel Hashomer, Israel
| | - Janneke H M Schuurs-Hoeijmakers
- Department of Human Genetics, Radboud University Medical Center and Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands
| | - Tuomo Mantere
- Laboratory of Cancer Genetics and Tumor Biology, Research Unit of Translational Medicine and Biocenter Oulu, University of Oulu, Oulu, Finland
| | - Rick Essers
- Maastricht University Medical Centre MUMC+, Department of Clinical Genetics, Maastricht, the Netherlands; GROW School for Oncology and Developmental Biology, Department of Genetics and Cell Biology, Maastricht, the Netherlands
| | - Masoud Zamani Esteki
- Maastricht University Medical Centre MUMC+, Department of Clinical Genetics, Maastricht, the Netherlands; GROW School for Oncology and Developmental Biology, Department of Genetics and Cell Biology, Maastricht, the Netherlands
| | - Amir L Avital
- Department of Pathology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Peh Sun Loo
- Department of Cellular Pathology, Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Annet Simons
- Department of Human Genetics, Radboud University Medical Center and Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands
| | - Rolph Pfundt
- Department of Human Genetics, Radboud University Medical Center and Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands
| | - Adilia Warris
- MRC Centre for Medical Mycology, University of Exeter, Exeter, UK; Department of Paediatric Infectious Diseases, Great Ormond Street Hospital, London, UK
| | - Marieke M Seyger
- Department of Dermatology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Frank L van de Veerdonk
- Department of Internal Medicine and Radboud Center for Infectious Diseases (RCI), Radboud University Medical Centre and Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands
| | - Mihai G Netea
- Department of Internal Medicine and Radboud Center for Infectious Diseases (RCI), Radboud University Medical Centre and Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands
| | - Mary A Slatter
- Newcastle University Translational and Clinical Research Institute, Newcastle upon Tyne, UK; Paediatric Immunology and Infectious Diseases, Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Terry Flood
- Paediatric Immunology and Infectious Diseases, Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Andrew R Gennery
- Newcastle University Translational and Clinical Research Institute, Newcastle upon Tyne, UK; Paediatric Immunology and Infectious Diseases, Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Amos J Simon
- Pediatric Department A and the Immunology Service, Jeffrey Modell Foundation Center, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Faculty of Medicine, Tel Aviv University, Tel-Aviv, Israel
| | - Atar Lev
- Pediatric Department A and the Immunology Service, Jeffrey Modell Foundation Center, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Faculty of Medicine, Tel Aviv University, Tel-Aviv, Israel
| | - Shirley Frizinsky
- Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel; Pediatric Department A and the Immunology Service, Jeffrey Modell Foundation Center, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Faculty of Medicine, Tel Aviv University, Tel-Aviv, Israel
| | - Ortal Barel
- The Wohl Institute for Translational Medicine and Cancer Research Center, Sheba Medical Center, Ramat Gan, Israel
| | - Mirjam van der Burg
- Department of Pediatrics, Laboratory for Pediatric Immunology, Willem-Alexander Children's Hospital, Leiden University Medical Center, Leiden, the Netherlands
| | - Raz Somech
- Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel; Pediatric Department A and the Immunology Service, Jeffrey Modell Foundation Center, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Faculty of Medicine, Tel Aviv University, Tel-Aviv, Israel
| | - Sophie Hambleton
- Newcastle University Translational and Clinical Research Institute, Newcastle upon Tyne, UK; Paediatric Immunology and Infectious Diseases, Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Stefanie S V Henriet
- Department of Pediatric Infectious Diseases and Immunology, Amalia Children's Hospital, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Alexander Hoischen
- Department of Human Genetics, Radboud University Medical Center and Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands; Department of Internal Medicine and Radboud Center for Infectious Diseases (RCI), Radboud University Medical Centre and Radboud Institute for Molecular Life Sciences, Nijmegen, the Netherlands.
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Al-Ouqaili MT, Murshid RM, Abd Al-Kariem BY, Kanaan BA, Al-Neda AT. Molecular cytogenetic analysis of multi-miscarriage products of conception in clinical cases from Al-Anbar Governorate, west of Iraq. Saudi J Biol Sci 2024; 31:103932. [PMID: 38314310 PMCID: PMC10835300 DOI: 10.1016/j.sjbs.2024.103932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 01/01/2024] [Accepted: 01/11/2024] [Indexed: 02/06/2024] Open
Abstract
Most clinical miscarriages often occur throughout the first trimester of pregnancy, with fetal chromosomal abnormalities being identified as the primary reason for such occurrences. The objective is to analyze the fetal chromosomal aberrations in the product of conception among Iraqi patients suffering from recurrent miscarriages. The cross-sectional study was performed on 60 cases of products of conception in women suffering from multiple miscarriages, obtained from Department of Obstetrics and Gynecology is located in Ramadi Teaching Hospital for Child and Maternity, as well as other Private Clinics in the Ramadi City. Long-term culture of conventional cytogenetic analysis using the G-banding technique was employed to determine the chromosomal disorder of fetal tissue part or villus samples. Fetal chromosomal abnormalities were detected in 86.7 %. Numerical chromosomal abnormalities were revealed in 98.1 %, while structural abnormalities were detected in 1.9 %. Additionally, the commonest gestation loss occurs in parents under 35 years in the first trimester (92.3 %). Trisomy 21 was the most frequent (46.2 %) in gestational loss. Fetal chromosomal abnormalities have been linked with gestational loss in Iraqi couples. Therefore, it is recommended that cytogenetic analysis should be performed to identify the genetic cause of recurrent miscarriage. This is important for providing appropriate genetic counseling and educating couples about the risk of future pregnancies.
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Affiliation(s)
- Mushtak T.S. Al-Ouqaili
- Department of Microbiology, College of Medicine, University of Anbar, Al-Anbar Governorate, Ramadi City, Iraq
| | - Rafal M. Murshid
- Department of Gynecology and Obstetrics, College of Medicine, University of Anbar, Al-Anbar Governorate, Ramadi City, Iraq
| | - Basma Y. Abd Al-Kariem
- Department of Obstetrics and Gynecology, Al-Ramadi Teaching Hospital for Child and Maternity, Al-Anbar Health Office, Al-Anbar Governorate, Ramadi City, Iraq
| | - Bushra A. Kanaan
- Department of Medical Microbiology, College of Medicine, University of Anbar, Al-Anbar Governorate, Ramadi City, Iraq
| | - Ahmed T.S. Al-Neda
- Department of Field Crops, College of Agriculture, University of Anbar, Ramadi City, Iraq
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