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Rufo J, Qiu C, Han D, Baxter N, Daley G, Wilson MZ. An explainable map of human gastruloid morphospace reveals gastrulation failure modes and predicts teratogens. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.09.20.614192. [PMID: 39386623 PMCID: PMC11463602 DOI: 10.1101/2024.09.20.614192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 10/12/2024]
Abstract
Human gastrulation is a critical stage of development where many pregnancies fail due to poorly understood mechanisms. Using the 2D gastruloid, a stem cell model of human gastrulation, we combined high-throughput drug perturbations and mathematical modelling to create an explainable map of gastruloid morphospace. This map outlines patterning outcomes in response to diverse perturbations and identifies variations in canonical patterning and failure modes. We modeled morphogen dynamics to embed simulated gastruloids into experimentally-determined morphospace to explain how developmental parameters drive patterning. Our model predicted and validated the two greatest sources of patterning variance: cell density-based modulations in Wnt signaling and SOX2 stability. Assigning these parameters as axes of morphospace imparted interpretability. To demonstrate its utility, we predicted novel teratogens that we validated in zebrafish. Overall, we show how stem cell models of development can be used to build a comprehensive and interpretable understanding of the set of developmental outcomes.
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Atique Tacla M, de Mello Copelli M, Pairet E, Monlleó IL, Ribeiro EM, Lustosa Mendes E, Helaers R, Vieira TP, Vikkula M, Gil-da-Silva-Lopes VL. Molecular investigation in individuals with orofacial clefts and microphthalmia-anophthalmia-coloboma spectrum. Eur J Hum Genet 2023:10.1038/s41431-023-01488-5. [PMID: 37932364 DOI: 10.1038/s41431-023-01488-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 09/29/2023] [Accepted: 10/18/2023] [Indexed: 11/08/2023] Open
Abstract
This study describes genomic findings among individuals with both orofacial clefts (OC) and microphthalmia/anophthalmia/coloboma (MAC) recorded in the Brazilian Database on Craniofacial Anomalies (BDCA). Chromosomal microarray analysis (CMA) and Whole Exome Sequencing (WES) were performed in 17 individuals with OC-MAC. Clinical interpretation of molecular findings was based on data available at the BDCA and on re-examination. No copy number variants (CNVs) classified as likely pathogenic or pathogenic were detected by CMA. WES allowed a conclusive diagnosis in six individuals (35.29%), two of them with variants in the CHD7 gene, and the others with variants in the TFAP2A, POMT1, PTPN11, and TP63 genes with the following syndromes: CHARGE, CHD7-spectrum, Branchiooculofacial, POMT1-spectrum, LEOPARD, and ADULT. Variants of uncertain significance (VUS) possibly associated to the phenotypes were found in six other individuals. Among the individuals with VUSes, three individuals presented variants in genes associated to defects of cilia structure and/or function, including DYNC2H1, KIAA0586, WDR34, INTU, RPGRIP1L, KIF7, and LMNA. These results show that WES was the most effective molecular approach for OC-MAC in this cohort. This study also reinforces the genetic heterogeneity of OC-MAC, and the importance of genes related to ciliopathies in this phenotype.
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Affiliation(s)
- Milena Atique Tacla
- Department of Translational Medicine, Area of Medical Genetics and Genomic Medicine, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Matheus de Mello Copelli
- Department of Translational Medicine, Area of Medical Genetics and Genomic Medicine, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Eleonore Pairet
- Human Molecular Genetics, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Isabella Lopes Monlleó
- Clinical Genetics Service, University Hospital, Medical Genetics Sector, Faculty of Medicine, Federal University of Alagoas - UFAL, Maceió, AL, Brazil
| | | | | | - Raphaël Helaers
- Human Molecular Genetics, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Tarsis Paiva Vieira
- Department of Translational Medicine, Area of Medical Genetics and Genomic Medicine, University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Miikka Vikkula
- Human Molecular Genetics, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Vera Lúcia Gil-da-Silva-Lopes
- Department of Translational Medicine, Area of Medical Genetics and Genomic Medicine, University of Campinas (UNICAMP), Campinas, SP, Brazil.
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Pidvalna U, Mirchuk M, Beshley D, Mateshuk-Vatseba L. Morphometric characteristics of the aorta and heart in situs inversus totalis. Anat Cell Biol 2022; 55:259-263. [PMID: 35773223 PMCID: PMC9256485 DOI: 10.5115/acb.21.252] [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: 12/24/2021] [Revised: 02/10/2022] [Accepted: 02/17/2022] [Indexed: 11/27/2022] Open
Abstract
Situs inversus totalis is a rare condition of visceral transposition in thoracic and abdominal cavities. Computed tomography (CT)-based morphometric analysis of the cardiovascular system prior to the surgery helps to describe vessel topography and size, choose the right surgical insertion site, avoid vessel trauma, and prevent hemorrhage during surgical intervention. We present a case report of situs inversus totalis detected incidentally in a 74-year-old male with the acute abdominal syndrome. Appropriate detailed aorta measurements are used to choose an adequate size of the aortic prosthesis during open surgical repair or endovascular aneurysm repair. An accurate assessment of the vessels on CT scans assists in consideration of the catheter diameter and the most reliable cannulation site. Vessel size correlates with morphological conditions (kinking, stenosis, occlusion), which may be considered a risk of organ malperfusion. The anatomical analysis prior to surgery in different anatomical variations may ensure patient safety and predict complications.
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Affiliation(s)
- Uliana Pidvalna
- Department of Normal Anatomy, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
| | - Marianna Mirchuk
- Department of Normal Anatomy, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine.,Ukrainian-Polish Heart Center "Lviv", Lviv, Ukraine
| | - Dmytro Beshley
- Department of Normal Anatomy, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine.,Ukrainian-Polish Heart Center "Lviv", Lviv, Ukraine.,Lviv Regional Clinical Hospital, Lviv, Ukraine
| | - Lesya Mateshuk-Vatseba
- Department of Normal Anatomy, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
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Linglart L, Bonnet D. Epigenetics and Congenital Heart Diseases. J Cardiovasc Dev Dis 2022; 9:185. [PMID: 35735814 PMCID: PMC9225036 DOI: 10.3390/jcdd9060185] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 06/01/2022] [Accepted: 06/07/2022] [Indexed: 12/22/2022] Open
Abstract
Congenital heart disease (CHD) is a frequent occurrence, with a prevalence rate of almost 1% in the general population. However, the pathophysiology of the anomalous heart development is still unclear in most patients screened. A definitive genetic origin, be it single-point mutation or larger chromosomal disruptions, only explains about 35% of identified cases. The precisely choreographed embryology of the heart relies on timed activation of developmental molecular cascades, spatially and temporally regulated through epigenetic regulation: chromatin conformation, DNA priming through methylation patterns, and spatial accessibility to transcription factors. This multi-level regulatory network is eminently susceptible to outside disruption, resulting in faulty cardiac development. Similarly, the heart is unique in its dynamic development: growth is intrinsically related to mechanical stimulation, and disruption of the intrauterine environment will have a direct impact on fetal embryology. These two converging axes offer new areas of research to characterize the cardiac epigenetic regulation and identify points of fragility in order to counteract its teratogenic consequences.
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Affiliation(s)
- Léa Linglart
- M3C-Necker, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), 75015 Paris, France;
| | - Damien Bonnet
- M3C-Necker, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), 75015 Paris, France;
- School of Medicine, Université de Paris Cité, 75006 Paris, France
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María Teresa S, Romina G, Lucila Marilén C, Fernanda A, Rafael Carlos L, Paola Mariela P. Anuran heart development and critical developmental periods: a comparative analysis of three Neotropical anuran species. Anat Rec (Hoboken) 2022; 305:3441-3455. [PMID: 35412699 DOI: 10.1002/ar.24933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 03/31/2022] [Accepted: 04/01/2022] [Indexed: 11/11/2022]
Abstract
The heart begins to form early during vertebrate development and is the first functional organ of the embryo. This study aimed to describe and compare the heart development in three Neotropical anuran species, Physalaemus albonotatus, Elachistocleis bicolor, and Scinax nasicus. Different Gosner Stages (GS) of embryos (GS 18-20) and premetamorphic (GS 21-25), prometamorphic (GS 26-41) and metamorphic (GS 42-46) tadpoles were analyzed using stereoscopic microscopy and Scanning Electronic Microscopy. Heart development was similar in the three analyzed species; however, some heterochronic events were identified between P. albonotatus and S. nasicus compared to E. bicolor. In addition, different patterns of melanophores arrangement were observed. During the embryonic and metamorphic periods, the main morphogenetic events occur: formation of the heart tube, regionalization of the heart compartments, development of spiral valve, onset of heartbeat, looping, and final displacement of the atrium and its complete septation. Both periods are critical for the normal morphogenesis and the correct functioning of the anuran heart. These results are useful to characterize the normal anuran heart morphology and to identify possible abnormalities caused by exposure to environmental contaminants.
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Affiliation(s)
- Sandoval María Teresa
- Universidad Nacional del Nordeste, Facultad de Ciencias Exactas y Naturales y Agrimensura. Embriología Animal, Av. Libertad 5470 (3400)., Corrientes, Argentina
| | - Gaona Romina
- Universidad Nacional del Nordeste, Facultad de Ciencias Exactas y Naturales y Agrimensura. Embriología Animal, Av. Libertad 5470 (3400)., Corrientes, Argentina
| | - Curi Lucila Marilén
- Consejo Nacional de Investigaciones Científicas Técnicas (CONICET), Buenos Aires, Argentina.,Instituto de Ictiología del Nordeste (INICNE), Facultad de Ciencias Veterinarias. Universidad Nacional del Nordeste (FCV, UNNE), Sargento Cabral 2139, (3400) Corrientes, Argentina
| | - Abreliano Fernanda
- Universidad Nacional del Nordeste, Facultad de Ciencias Exactas y Naturales y Agrimensura. Embriología Animal, Av. Libertad 5470 (3400)., Corrientes, Argentina
| | - Lajmanovich Rafael Carlos
- Consejo Nacional de Investigaciones Científicas Técnicas (CONICET), Buenos Aires, Argentina.,Laboratorio de Ecotoxicología, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (FBCB-UNL), Santa Fe, Argentina
| | - Peltzer Paola Mariela
- Consejo Nacional de Investigaciones Científicas Técnicas (CONICET), Buenos Aires, Argentina.,Laboratorio de Ecotoxicología, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (FBCB-UNL), Santa Fe, Argentina
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da Costa MCV, Kmecick M, Freitas PFD, Ortolani-Machado CF. Lead exposure affects cephalic morphogenesis and neural crest cells in Gallus gallus embryo. Neurotoxicol Teratol 2021; 84:106948. [PMID: 33418068 DOI: 10.1016/j.ntt.2021.106948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 12/09/2020] [Accepted: 01/02/2021] [Indexed: 01/02/2023]
Abstract
The morphogenesis of the head of vertebrates is a process that involves rapid growth and dynamic movements of various cell populations, including the neural crest cells (NCC). These pluripotent cells generated during neurulation have high proliferative and migratory capacity but xenobiotic agents can affect these migratory periods and cause congenital malformations. Lead (Pb) is the most common toxic metal in the environment and a potent teratogen that can affect growth and induce malformations. Despite the known toxic effects of Pb, there is a gap in knowledge about the impact of realistic concentrations of Pb at critical periods of early development. Here, we evaluated mortality, embryonic morphology, NCC migration, and the amount of Pb deposition in chicken embryos after 3 to 4 days of exposure. One of the most interesting observations in this study is that only about 34% of the injected Pb was present in the embryos after 4 days. We observed that exposure to Pb, even under low concentrations, increased mortality and the occurrence of malformations during embryonic development, especially in the cephalic region (CR). Although Pb was found widely distributed in the CR, no relation between its presence and the migration routes of cephalic NCC was observed. But the number of NCC and their migratory distance were reduced. These changes are consistent and explain the morphological anomalies described in this study, which also correlates with the morphofunctional abnormalities reported in the literature. Therefore, this study highlights the concern of exposure to low concentrations of this metal.
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Affiliation(s)
| | - Melyssa Kmecick
- Laboratory of Embryotoxicology, Department of Cell Biology, Federal University of Paraná, Curitiba, PR, Brazil
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Lunagómez LS, Santiago-Roque I, Gheno-Heredia YA, Corona-Morales AA, Bolado-García VE. Teratogenic effects of Bocconia frutescens L. J Dev Orig Health Dis 2020; 11:1-4. [PMID: 31907091 DOI: 10.1017/s2040174419000461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
It is estimated that 80% of the world population trusts traditional medicine. A large number of Americans use infusions of Bocconia frutescens L. leaves to treat cough and gastrointestinal disorders. However, phytochemical studies reveal that this plant contains alkaloids and other potentially harmful substances. This study aimed to evaluate the teratogenic effects of B. frutescens L. in an experimental model. Pregnant Wistar rats were administered lyophilized B. frutescens L. extract at 300 mg/kg/day or vehicle by orogastric route during the organogenesis period (gestation days 7-13), and external and internal congenital malformations were analyzed on the progeny on gestational day 20. Bocconia frutescens L. produced a significant increase in the number of different malformations, relative to the control group. We conclude that the consumption of B. frutescens L. during pregnancy at a dose equivalent to that consumed by humans increases the risk of teratogenic effects.
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Affiliation(s)
- L S Lunagómez
- Maestría en Seguridad Alimentaria y Nutricional, Facultad de Nutrición, Universidad Veracruzana, Xalapa, México
| | - I Santiago-Roque
- Laboratorio de Neurotoxicología, Facultad de Bioanálisis, Universidad Veracruzana, Xalapa, México
| | - Y A Gheno-Heredia
- Facultad de Ciencias Biológicas y Agropecuarias, Universidad Veracruzana, Córdoba Veracruz, México
| | - A A Corona-Morales
- Laboratorio de Investigación Genómica y Fisiológica, Facultad de Nutrición, Universidad Veracruzana, Xalapa, México
| | - V E Bolado-García
- Laboratorio de Investigación Genómica y Fisiológica, Facultad de Nutrición, Universidad Veracruzana, Xalapa, México
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Morphological evidence of neurotoxic effects in chicken embryos after exposure to perfluorooctanoic acid (PFOA) and inorganic cadmium. Toxicology 2019; 427:152286. [DOI: 10.1016/j.tox.2019.152286] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 08/01/2019] [Accepted: 09/02/2019] [Indexed: 01/09/2023]
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Special Issue: Left-Right Asymmetry and Cardiac Morphogenesis. J Cardiovasc Dev Dis 2018; 5:jcdd5030040. [PMID: 30049992 PMCID: PMC6162801 DOI: 10.3390/jcdd5030040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 07/25/2018] [Indexed: 11/17/2022] Open
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