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Karas Kuželički N, Doljak B. Congenital Heart Disease and Genetic Changes in Folate/Methionine Cycles. Genes (Basel) 2024; 15:872. [PMID: 39062651 PMCID: PMC11276067 DOI: 10.3390/genes15070872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 06/29/2024] [Accepted: 06/30/2024] [Indexed: 07/28/2024] Open
Abstract
Congenital heart disease is one of the most common congenital malformations and thus represents a considerable public health burden. Hence, the identification of individuals and families with an increased genetic predisposition to congenital heart disease (CHD) and its possible prevention is important. Even though CHD is associated with the lack of folate during early pregnancy, the genetic background of folate and methionine metabolism perturbations and their influence on CHD risk is not clear. While some genes, such as those coding for cytosolic enzymes of folate/methionine cycles, have been extensively studied, genetic studies of folate transporters (de)glutamation enzymes and mitochondrial enzymes of the folate cycle are lacking. Among genes coding for cytoplasmic enzymes of the folate cycle, MTHFR, MTHFD1, MTR, and MTRR have the strongest association with CHD, while among genes for enzymes of the methionine cycle BHMT and BHMT2 are the most prominent. Among mitochondrial folate cycle enzymes, MTHFD2 plays the most important role in CHD formation, while FPGS was identified as important in the group of (de)glutamation enzymes. Among transporters, the strongest association with CHD was demonstrated for SLC19A1.
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Affiliation(s)
- Nataša Karas Kuželički
- Department of Clinical Biochemistry, Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, Slovenia
| | - Bojan Doljak
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Ljubljana, Aškerčeva 7, 1000 Ljubljana, Slovenia;
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2
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Keuls RA, Finnell RH, Parchem RJ. Maternal metabolism influences neural tube closure. Trends Endocrinol Metab 2023; 34:539-553. [PMID: 37468429 PMCID: PMC10529122 DOI: 10.1016/j.tem.2023.06.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 06/14/2023] [Accepted: 06/19/2023] [Indexed: 07/21/2023]
Abstract
Changes in maternal nutrient availability due to diet or disease significantly increase the risk of neural tube defects (NTDs). Because the incidence of metabolic disease continues to rise, it is urgent that we better understand how altered maternal nutrient levels can influence embryonic neural tube development. Furthermore, primary neurulation occurs before placental function during a period of histiotrophic nutrient exchange. In this review we detail how maternal metabolites are transported by the yolk sac to the developing embryo. We discuss recent advances in understanding how altered maternal levels of essential nutrients disrupt development of the neuroepithelium, and identify points of intersection between metabolic pathways that are crucial for NTD prevention.
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Affiliation(s)
- Rachel A Keuls
- Development, Disease Models, and Therapeutics Graduate Program, Baylor College of Medicine. Houston, TX 77030, USA; Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA; Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, TX 77030, USA; Stem Cells and Regenerative Medicine Center, Baylor College of Medicine, Houston, TX 77030, USA; Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030, USA
| | - Richard H Finnell
- Departments of Molecular and Human Genetics and Medicine, Baylor College of Medicine, Houston, TX 77030, USA; Center for Precision Environmental Health, Department of Molecular and Cellular Biology and Medicine, Baylor College of Medicine, Houston, TX 77030, USA
| | - Ronald J Parchem
- Development, Disease Models, and Therapeutics Graduate Program, Baylor College of Medicine. Houston, TX 77030, USA; Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA; Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, TX 77030, USA; Stem Cells and Regenerative Medicine Center, Baylor College of Medicine, Houston, TX 77030, USA; Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030, USA.
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3
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Kozyraki R, Verroust P, Cases O. Cubilin, the intrinsic factor-vitamin B12 receptor. VITAMINS AND HORMONES 2022; 119:65-119. [PMID: 35337634 DOI: 10.1016/bs.vh.2022.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Cubilin (CUBN), the intrinsic factor-vitamin B12 receptor is a large endocytic protein involved in various physiological functions: vitamin B12 uptake in the gut; reabsorption of albumin and maturation of vitamin D in the kidney; nutrient delivery during embryonic development. Cubilin is an atypical receptor, peripherally associated to the plasma membrane. The transmembrane proteins amnionless (AMN) and Lrp2/Megalin are the currently known molecular partners contributing to plasma membrane transport and internalization of Cubilin. The role of Cubilin/Amn complex in the handling of vitamin B12 in health and disease has extensively been studied and so is the role of the Cubilin-Lrp2 tandem in renal pathophysiology. Accumulating evidence strongly supports a role of Cubilin in some developmental defects including impaired closure of the neural tube. Are these defects primarily caused by the dysfunction of a specific Cubilin ligand or are they secondary to impaired vitamin B12 or protein uptake? We will present the established Cubilin functions, discuss the developmental data and provide an overview of the emerging implications of Cubilin in the field of cardiovascular disease and cancer pathogenesis.
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Affiliation(s)
- Renata Kozyraki
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université de Paris, Paris, France.
| | - Pierre Verroust
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université de Paris, Paris, France
| | - Olivier Cases
- Centre de Recherche des Cordeliers, Sorbonne Université, INSERM, Université de Paris, Paris, France
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Seelan RS, Mukhopadhyay P, Philipose J, Greene RM, Pisano MM. Gestational folate deficiency alters embryonic gene expression and cell function. Differentiation 2020; 117:1-15. [PMID: 33302058 DOI: 10.1016/j.diff.2020.11.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 11/04/2020] [Accepted: 11/23/2020] [Indexed: 12/25/2022]
Abstract
Folic acid is a nutrient essential for embryonic development. Folate deficiency can cause embryonic lethality or neural tube defects and orofacial anomalies. Folate receptor 1 (Folr1) is a folate binding protein that facilitates the cellular uptake of dietary folate. To better understand the biological processes affected by folate deficiency, gene expression profiles of gestational day 9.5 (gd9.5) Folr1-/- embryos were compared to those of gd9.5 Folr1+/+ embryos. The expression of 837 genes/ESTs was found to be differentially altered in Folr1-/- embryos, relative to those observed in wild-type embryos. The 837 differentially expressed genes were subjected to Ingenuity Pathway Analysis. Among the major biological functions affected in Folr1-/- mice were those related to 'digestive system development/function', 'cardiovascular system development/function', 'tissue development', 'cellular development', and 'cell growth and differentiation', while the major canonical pathways affected were those associated with blood coagulation, embryonic stem cell transcription and cardiomyocyte differentiation (via BMP receptors). Cellular proliferation, apoptosis and migration were all significantly affected in the Folr1-/- embryos. Cranial neural crest cells (NCCs) and neural tube explants, grown under folate-deficient conditions, exhibited marked reduction in directed migration that can be attributed, in part, to an altered cytoskeleton caused by perturbations in F-actin formation and/or assembly. The present study revealed that several developmentally relevant biological processes were compromised in Folr1-/- embryos.
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Affiliation(s)
- R S Seelan
- Department of Oral Immunology and Infectious Diseases, Division of Craniofacial Development & Anomalies, University of Louisville Dental School, 501 S. Preston St., Louisville, KY, 40292, USA
| | - P Mukhopadhyay
- Department of Oral Immunology and Infectious Diseases, Division of Craniofacial Development & Anomalies, University of Louisville Dental School, 501 S. Preston St., Louisville, KY, 40292, USA
| | - J Philipose
- Department of Oral Immunology and Infectious Diseases, Division of Craniofacial Development & Anomalies, University of Louisville Dental School, 501 S. Preston St., Louisville, KY, 40292, USA
| | - R M Greene
- Department of Oral Immunology and Infectious Diseases, Division of Craniofacial Development & Anomalies, University of Louisville Dental School, 501 S. Preston St., Louisville, KY, 40292, USA.
| | - M M Pisano
- Department of Oral Immunology and Infectious Diseases, Division of Craniofacial Development & Anomalies, University of Louisville Dental School, 501 S. Preston St., Louisville, KY, 40292, USA
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D'Souza SW, Copp AJ, Greene NDE, Glazier JD. Maternal Inositol Status and Neural Tube Defects: A Role for the Human Yolk Sac in Embryonic Inositol Delivery? Adv Nutr 2020; 12:212-222. [PMID: 32892218 PMCID: PMC7849949 DOI: 10.1093/advances/nmaa100] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 06/10/2020] [Accepted: 07/28/2020] [Indexed: 12/12/2022] Open
Abstract
Supplementation with myo-inositol during the periconceptional period of pregnancy may ameliorate the recurrence risk of having a fetus affected by a neural tube defect (NTD; e.g., spina bifida). This could be of particular importance in providing a means for preventing NTDs that are unresponsive to folic acid. This review highlights the characteristics of inositol and describes the role of myo-inositol in the prevention of NTDs in rodent studies and the evidence for its efficacy in reducing NTD risk in human pregnancy. The possible reduction in NTD risk by maternal myo-inositol implies functional and developmentally important maternal-embryonic inositol interrelationships and also suggests that embryonic uptake of myo-inositol is crucial for embryonic development. The establishment of active myo-inositol cellular uptake mechanisms in the embryonic stages of human pregnancy, when the neural tube is closing, is likely to be an important determinant of normal development. We draw attention to the generation of materno-fetal inositol concentration gradients and relationships, and outline a transport pathway by which myo-inositol may be delivered to the early developing human embryo. These considerations provide novel insights into the mechanisms that may underpin inositol's ability to confer embryonic developmental benefit.
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Affiliation(s)
- Stephen W D'Souza
- Maternal and Fetal Health Research Centre, St. Mary's Hospital, School of Medical Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom
| | - Andrew J Copp
- Newlife Birth Defects Research Centre, Developmental Biology and Cancer Department, UCL Great Ormond Street Institute of Child Health, London, United Kingdom
| | - Nicholas D E Greene
- Newlife Birth Defects Research Centre, Developmental Biology and Cancer Department, UCL Great Ormond Street Institute of Child Health, London, United Kingdom
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Kozyraki R, Cases O. Cubilin, the Intrinsic Factor-Vitamin B12 Receptor in Development and Disease. Curr Med Chem 2018; 27:3123-3150. [PMID: 30295181 DOI: 10.2174/0929867325666181008143945] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Revised: 08/11/2018] [Accepted: 08/21/2018] [Indexed: 12/29/2022]
Abstract
Gp280/Intrinsic factor-vitamin B12 receptor/Cubilin (CUBN) is a large endocytic receptor serving multiple functions in vitamin B12 homeostasis, renal reabsorption of protein or toxic substances including albumin, vitamin D-binding protein or cadmium. Cubilin is a peripheral membrane protein consisting of 8 Epidermal Growth Factor (EGF)-like repeats and 27 CUB (defined as Complement C1r/C1s, Uegf, BMP1) domains. This structurally unique protein interacts with at least two molecular partners, Amnionless (AMN) and Lrp2/Megalin. AMN is involved in appropriate plasma membrane transport of Cubilin whereas Lrp2 is essential for efficient internalization of Cubilin and its ligands. Observations gleaned from animal models with Cubn deficiency or human diseases demonstrate the importance of this protein. In this review addressed to basic research and medical scientists, we summarize currently available data on Cubilin and its implication in renal and intestinal biology. We also discuss the role of Cubilin as a modulator of Fgf8 signaling during embryonic development and propose that the Cubilin-Fgf8 interaction may be relevant in human pathology, including in cancer progression, heart or neural tube defects. We finally provide experimental elements suggesting that some aspects of Cubilin physiology might be relevant in drug design.
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Affiliation(s)
- Renata Kozyraki
- INSERM UMRS 1138, Centre de Recherche des Cordeliers, Paris-Diderot University, Paris, France
| | - Olivier Cases
- INSERM UMRS 1138, Centre de Recherche des Cordeliers, Paris-Diderot University, Paris, France
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Santander N, Lizama C, Murgas L, Contreras S, Martin AJM, Molina P, Quiroz A, Rivera K, Salas-Pérez F, Godoy A, Rigotti A, Busso D. Transcriptional profiling of embryos lacking the lipoprotein receptor SR-B1 reveals a regulatory circuit governing a neurodevelopmental or metabolic decision during neural tube closure. BMC Genomics 2018; 19:731. [PMID: 30290792 PMCID: PMC6173885 DOI: 10.1186/s12864-018-5110-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 09/24/2018] [Indexed: 12/20/2022] Open
Abstract
Background The high-density lipoprotein receptor SR-B1 mediates cellular uptake of several lipid species, including cholesterol and vitamin E. During early mouse development, SR-B1 is located in the maternal-fetal interface, where it facilitates vitamin E transport towards the embryo. Consequently, mouse embryos lacking SR-B1 are vitamin E-deficient, and around half of them fail to close the neural tube and show cephalic neural tube defects (NTD). Here, we used transcriptomic profiling to identify the molecular determinants of this phenotypic difference between SR-B1 deficient embryos with normal morphology or with NTD. Results We used RNA-Seq to compare the transcriptomic profile of three groups of embryos retrieved from SR-B1 heterozygous intercrosses: wild-type E9.5 embryos (WT), embryos lacking SR-B1 that are morphologically normal, without NTD (KO-N) and SR-B1 deficient embryos with this defect (KO-NTD). We identified over 1000 differentially expressed genes: down-regulated genes in KO-NTD embryos were enriched for functions associated to neural development, while up-regulated genes in KO-NTD embryos were enriched for functions related to lipid metabolism. Feeding pregnant dams a vitamin E-enriched diet, which prevents NTD in SR-B1 KO embryos, resulted in mRNA levels for those differentially expressed genes that were more similar to KO-N than to KO-NTD embryos. We used gene regulatory network analysis to identify putative transcriptional regulators driving the different embryonic expression profiles, and identified a regulatory circuit controlled by the androgen receptor that may contribute to this dichotomous expression profile in SR-B1 embryos. Supporting this possibility, the expression level of the androgen receptor correlated strongly with the expression of several genes involved in neural development and lipid metabolism. Conclusions Our analysis shows that normal and defective embryos lacking SR-B1 have divergent expression profiles, explained by a defined set of transcription factors that may explain their divergent phenotype. We propose that distinct expression profiles may be relevant during early development to support embryonic nutrition and neural tube closure. Electronic supplementary material The online version of this article (10.1186/s12864-018-5110-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nicolás Santander
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 367, 83300024, Santiago, CP, Chile
| | - Carlos Lizama
- Cardiovascular Research Institute, University of California, San Francisco, CA, USA
| | - Leandro Murgas
- Network Biology Laboratory, Center for Genomics and Bioinformatics, Faculty of Sciences, Universidad Mayor, Santiago, Chile
| | - Sebastián Contreras
- Network Biology Laboratory, Center for Genomics and Bioinformatics, Faculty of Sciences, Universidad Mayor, Santiago, Chile
| | - Alberto J M Martin
- Network Biology Laboratory, Center for Genomics and Bioinformatics, Faculty of Sciences, Universidad Mayor, Santiago, Chile
| | - Paz Molina
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 367, 83300024, Santiago, CP, Chile
| | - Alonso Quiroz
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 367, 83300024, Santiago, CP, Chile
| | - Katherine Rivera
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 367, 83300024, Santiago, CP, Chile
| | - Francisca Salas-Pérez
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 367, 83300024, Santiago, CP, Chile
| | - Alejandro Godoy
- Faculty of Biological Sciences, Pontificia Universidad Católica de Chile, Santiago, Chile.,Department of Urology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Attilio Rigotti
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 367, 83300024, Santiago, CP, Chile.,Center of Molecular Nutrition and Chronic Diseases, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Dolores Busso
- Department of Nutrition, Diabetes, and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 367, 83300024, Santiago, CP, Chile.
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8
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Sabatino JA, Stokes BA, Zohn IE. Prevention of neural tube defects in Lrp2 mutant mouse embryos by folic acid supplementation. Birth Defects Res 2018; 109:16-26. [PMID: 27883261 DOI: 10.1002/bdra.23589] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 09/18/2016] [Indexed: 01/03/2023]
Abstract
BACKGROUND Neural tube defects (NTDs) are among the most common structural birth defects in humans and are caused by the complex interaction of genetic and environmental factors. Periconceptional supplementation with folic acid can prevent NTDs in both mouse models and human populations. A better understanding of how genes and environmental factors interact is critical toward development of rational strategies to prevent NTDs. Low density lipoprotein-related protein 2 (Lrp2) is involved in endocytosis of the folic acid receptor among numerous other nutrients and ligands. METHODS We determined the effect of iron and/or folic acid supplementation on the penetrance of NTDs in the Lrp2null mouse model. The effects of supplementation on folate and iron status were measured in embryos and dams. RESULTS Periconceptional dietary supplementation with folic acid did not prevent NTDs in Lrp2 mutant embryos, whereas high levels of folic acid supplementation by intraperitoneal injection reduced incidence of NTDs. Importantly, Lrp2null/+ dams had reduced blood folate levels that improved with daily intraperitoneal injections of folate but not dietary supplementation. On the contrary, iron supplementation had no effect on the penetrance of NTDs in Lrp2 mutant embryos and negated the preventative effect of folic acid supplementation in Lrp2null/null mutants. CONCLUSION Lrp2 is required for folate homeostasis in heterozygous dams and high levels of supplementation prevents NTDs. Furthermore, high levels of dietary iron supplementation interfered with folic acid supplementation negating the positive effects of supplementation in this model. Birth Defects Research 109:16-26, 2017. © 2016 The Authors Birth Defects Published by Wiley Periodicals, Inc.
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Affiliation(s)
- Julia A Sabatino
- Center for Neuroscience Research, Children's Research Institute, Children's National Medical Center, Washington, DC
| | - Bethany A Stokes
- Center for Neuroscience Research, Children's Research Institute, Children's National Medical Center, Washington, DC.,Department of Biology, The George Washington University, Washington, DC
| | - Irene E Zohn
- Center for Neuroscience Research, Children's Research Institute, Children's National Medical Center, Washington, DC
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Nasrallah R, Fast EM, Solaimani P, Knezevic K, Eliades A, Patel R, Thambyrajah R, Unnikrishnan A, Thoms J, Beck D, Vink CS, Smith A, Wong J, Shepherd M, Kent D, Roychoudhuri R, Paul F, Klippert J, Hammes A, Willnow T, Göttgens B, Dzierzak E, Zon LI, Lacaud G, Kouskoff V, Pimanda JE. Identification of novel regulators of developmental hematopoiesis using Endoglin regulatory elements as molecular probes. Blood 2016; 128:1928-1939. [PMID: 27554085 PMCID: PMC5064716 DOI: 10.1182/blood-2016-02-697870] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 08/15/2016] [Indexed: 12/13/2022] Open
Abstract
Enhancers are the primary determinants of cell identity, and specific promoter/enhancer combinations of Endoglin (ENG) have been shown to target blood and endothelium in the embryo. Here, we generated a series of embryonic stem cell lines, each targeted with reporter constructs driven by specific promoter/enhancer combinations of ENG, to evaluate their discriminative potential and value as molecular probes of the corresponding transcriptome. The Eng promoter (P) in combination with the -8/+7/+9-kb enhancers, targeted cells in FLK1 mesoderm that were enriched for blast colony forming potential, whereas the P/-8-kb enhancer targeted TIE2+/c-KIT+/CD41- endothelial cells that were enriched for hematopoietic potential. These fractions were isolated using reporter expression and their transcriptomes profiled by RNA-seq. There was high concordance between our signatures and those from embryos with defects at corresponding stages of hematopoiesis. Of the 6 genes that were upregulated in both hemogenic mesoderm and hemogenic endothelial fractions targeted by the reporters, LRP2, a multiligand receptor, was the only gene that had not previously been associated with hematopoiesis. We show that LRP2 is indeed involved in definitive hematopoiesis and by doing so validate the use of reporter gene-coupled enhancers as probes to gain insights into transcriptional changes that facilitate cell fate transitions.
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Affiliation(s)
- Rabab Nasrallah
- Lowy Cancer Research Centre and the Prince of Wales Clinical School, University of New South Wales Australia, Sydney, Australia
| | - Eva M Fast
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA; Howard Hughes Medical Institute, Stem Cell Program and Division of Pediatric Hematology/Oncology, Boston Children's Hospital, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Parham Solaimani
- Erasmus Medical Center Stem Cell Institute, Department of Cell Biology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Kathy Knezevic
- Lowy Cancer Research Centre and the Prince of Wales Clinical School, University of New South Wales Australia, Sydney, Australia
| | - Alexia Eliades
- Cancer Research United Kingdom Manchester Institute, The University of Manchester, Manchester, United Kingdom
| | - Rahima Patel
- Cancer Research United Kingdom Manchester Institute, The University of Manchester, Manchester, United Kingdom
| | - Roshana Thambyrajah
- Cancer Research United Kingdom Manchester Institute, The University of Manchester, Manchester, United Kingdom
| | - Ashwin Unnikrishnan
- Lowy Cancer Research Centre and the Prince of Wales Clinical School, University of New South Wales Australia, Sydney, Australia
| | - Julie Thoms
- Lowy Cancer Research Centre and the Prince of Wales Clinical School, University of New South Wales Australia, Sydney, Australia
| | - Dominik Beck
- Lowy Cancer Research Centre and the Prince of Wales Clinical School, University of New South Wales Australia, Sydney, Australia
| | - Chris S Vink
- Erasmus Medical Center Stem Cell Institute, Department of Cell Biology, Erasmus University Medical Center, Rotterdam, The Netherlands; Medical Research Council Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Aileen Smith
- Department of Haematology, Wellcome Trust and Medical Research Council Cambridge Stem Cell Institute and Cambridge Institute for Medical Research, Cambridge University, Cambridge, United Kingdom
| | - Jason Wong
- Lowy Cancer Research Centre and the Prince of Wales Clinical School, University of New South Wales Australia, Sydney, Australia
| | - Mairi Shepherd
- Department of Haematology, Wellcome Trust and Medical Research Council Cambridge Stem Cell Institute and Cambridge Institute for Medical Research, Cambridge University, Cambridge, United Kingdom
| | - David Kent
- Department of Haematology, Wellcome Trust and Medical Research Council Cambridge Stem Cell Institute and Cambridge Institute for Medical Research, Cambridge University, Cambridge, United Kingdom
| | - Rahul Roychoudhuri
- The Babraham Institute, Babraham Research Campus, Cambridge, United Kingdom
| | - Fabian Paul
- Max Delbrueck Center for Molecular Medicine, Berlin, Germany; and
| | - Julia Klippert
- Max Delbrueck Center for Molecular Medicine, Berlin, Germany; and
| | - Annette Hammes
- Max Delbrueck Center for Molecular Medicine, Berlin, Germany; and
| | - Thomas Willnow
- Max Delbrueck Center for Molecular Medicine, Berlin, Germany; and
| | - Bertie Göttgens
- Department of Haematology, Wellcome Trust and Medical Research Council Cambridge Stem Cell Institute and Cambridge Institute for Medical Research, Cambridge University, Cambridge, United Kingdom
| | - Elaine Dzierzak
- Erasmus Medical Center Stem Cell Institute, Department of Cell Biology, Erasmus University Medical Center, Rotterdam, The Netherlands; Medical Research Council Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Leonard I Zon
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA; Howard Hughes Medical Institute, Stem Cell Program and Division of Pediatric Hematology/Oncology, Boston Children's Hospital, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - George Lacaud
- Cancer Research United Kingdom Manchester Institute, The University of Manchester, Manchester, United Kingdom
| | - Valerie Kouskoff
- Cancer Research United Kingdom Manchester Institute, The University of Manchester, Manchester, United Kingdom
| | - John E Pimanda
- Lowy Cancer Research Centre and the Prince of Wales Clinical School, University of New South Wales Australia, Sydney, Australia; Department of Haematology, The Prince of Wales Hospital, Sydney, Australia
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10
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Peng L, Dreumont N, Coelho D, Guéant JL, Arnold C. Genetic animal models to decipher the pathogenic effects of vitamin B12 and folate deficiency. Biochimie 2016; 126:43-51. [DOI: 10.1016/j.biochi.2016.05.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Accepted: 05/06/2016] [Indexed: 01/20/2023]
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11
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Sant KE, Dolinoy DC, Jilek JL, Shay BJ, Harris C. Mono-2-ethylhexyl phthalate (MEHP) alters histiotrophic nutrition pathways and epigenetic processes in the developing conceptus. J Nutr Biochem 2016; 27:211-8. [PMID: 26507544 PMCID: PMC4750404 DOI: 10.1016/j.jnutbio.2015.09.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 09/03/2015] [Accepted: 09/04/2015] [Indexed: 12/24/2022]
Abstract
Histiotrophic nutrition pathways (HNPs) are processes by which the organogenesis-stage conceptus obtains nutrients, amino acids, vitamins and cofactors required for protein biosynthesis and metabolic activities. Nutrients are captured from the maternal milieu as whole proteins and cargoes via receptor-mediated endocytosis in the visceral yolk sac (VYS), degraded by lysosomal proteolysis and delivered to the developing embryo (EMB). Several nutrients obtained by HNPs are required substrates for one-carbon (C1) metabolism and supply methyl groups required for epigenetic processes, including DNA and histone methylation. Increased availability of methyl donors has been associated with reduced risk for neural tube defects (NTDs). Here, we show that mono-2-ethylhexyl phthalate (MEHP) treatment (100 or 250μM) alters HNPs, C1 metabolism and epigenetic programming in the organogenesis-stage conceptus. Specifically, 3-h MEHP treatment of mouse EMBs in whole culture resulted in dose-dependent reduction of HNP activity in the conceptus. To observe nutrient consequences of decreased HNP function, C1 components and substrates and epigenetic outcomes were quantified at 24h. Treatment with 100-μM MEHP resulted in decreased dietary methyl donor concentrations, while treatment with 100- or 250-μM MEHP resulted in dose-dependent elevated C1 products and substrates. In MEHP-treated EMBs with NTDs, H3K4 methylation was significantly increased, while no effects were seen in treated VYS. DNA methylation was reduced in MEHP-treated EMB with and without NTDs. This research suggests that environmental toxicants such as MEHP decrease embryonic nutrition in a time-dependent manner and that epigenetic consequences of HNP disruption may be exacerbated in EMB with NTDs.
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Affiliation(s)
- Karilyn E Sant
- Department of Environmental Health Sciences, University of Michigan, Ann Arbor, Michigan, 48109-2029
| | - Dana C Dolinoy
- Department of Environmental Health Sciences, University of Michigan, Ann Arbor, Michigan, 48109-2029
| | - Joseph L Jilek
- Department of Environmental Health Sciences, University of Michigan, Ann Arbor, Michigan, 48109-2029
| | - Brian J Shay
- Department of Pharmacology, Biomedical Mass Spectrometry Facility, University of Michigan, Ann Arbor, Michigan, 48109-5632
| | - Craig Harris
- Department of Environmental Health Sciences, University of Michigan, Ann Arbor, Michigan, 48109-2029.
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12
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Rosenquist TH. Folate, Homocysteine and the Cardiac Neural Crest. Dev Dyn 2013; 242:201-18. [DOI: 10.1002/dvdy.23922] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Revised: 12/21/2012] [Accepted: 12/21/2012] [Indexed: 12/21/2022] Open
Affiliation(s)
- Thomas H. Rosenquist
- Department of Genetics; Cell Biology and Anatomy; University of Nebraska Medical Center; Omaha; Nebraska
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13
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Salbaum JM, Kappen C. Genetic and epigenomic footprints of folate. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2012; 108:129-58. [PMID: 22656376 DOI: 10.1016/b978-0-12-398397-8.00006-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Dietary micronutrient composition has long been recognized as a determining factor for human health. Historically, biochemical research has successfully unraveled how vitamins serve as essential cofactors for enzymatic reactions in the biochemical machinery of the cell. Folate, also known as vitamin B9, follows this paradigm as well. Folate deficiency is linked to adverse health conditions, and dietary supplementation with folate has proven highly beneficial in the prevention of neural tube defects. With its function in single-carbon metabolism, folate levels affect nucleotide synthesis, with implications for cell proliferation, DNA repair, and genomic stability. Furthermore, by providing the single-carbon moiety in the synthesis pathway for S-adenosylmethionine, the main methyl donor in the cell, folate also impacts methylation reactions. It is this capacity that extends the reach of folate functions into the realm of epigenetics and gene regulation. Methylation reactions play a major role for several modalities of the epigenome. The specific methylation status of histones, noncoding RNAs, transcription factors, or DNA represents a significant determinant for the transcriptional output of a cell. Proper folate status is therefore necessary for a broad range of biological functions that go beyond the biochemistry of folate. In this review, we examine evolutionary, genetic, and epigenomic footprints of folate and the implications for human health.
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Affiliation(s)
- J Michael Salbaum
- Regulation of Gene Expression Laboratory, Pennington Biomedical Research Center, Baton Rouge, Louisiana, USA
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Li J, Shi Y, Sun J, Zhang Y, Mao B. Xenopus reduced folate carrier regulates neural crest development epigenetically. PLoS One 2011; 6:e27198. [PMID: 22096536 PMCID: PMC3212533 DOI: 10.1371/journal.pone.0027198] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2011] [Accepted: 10/12/2011] [Indexed: 11/18/2022] Open
Abstract
Folic acid deficiency during pregnancy causes birth neurocristopathic malformations resulting from aberrant development of neural crest cells. The Reduced folate carrier (RFC) is a membrane-bound receptor for facilitating transfer of reduced folate into the cells. RFC knockout mice are embryonic lethal and develop multiple malformations, including neurocristopathies. Here we show that XRFC is specifically expressed in neural crest tissues in Xenopus embryos and knockdown of XRFC by specific morpholino results in severe neurocristopathies. Inhibition of RFC blocked the expression of a series of neural crest marker genes while overexpression of RFC or injection of 5-methyltetrahydrofolate expanded the neural crest territories. In animal cap assays, knockdown of RFC dramatically reduced the mono- and trimethyl-Histone3-K4 levels and co-injection of the lysine methyltransferase hMLL1 largely rescued the XRFC morpholino phenotype. Our data revealed that the RFC mediated folate metabolic pathway likely potentiates neural crest gene expression through epigenetic modifications.
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Affiliation(s)
- Jiejing Li
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
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15
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Mayanil CS, Ichi S, Farnell BM, Boshnjaku V, Tomita T, McLone DG. Maternal intake of folic acid and neural crest stem cells. VITAMINS AND HORMONES 2011; 87:143-73. [PMID: 22127242 DOI: 10.1016/b978-0-12-386015-6.00028-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Maternal folic acid (FA) intake has beneficial effects in preventing neural tube defects and may also play a role in the prevention of adult onset diseases such as Alzheimer's disease, dementia, neuropsychiatric disorders, cardiovascular diseases, and cerebral ischemia. This review will focus on the effects of maternal FA intake on neural crest stem cell proliferation and differentiation. Although FA is generally considered beneficial, it has the potential of promoting cell proliferation at the expense of differentiation. In some situations, this may lead to miscarriage or postnatal developmental abnormalities. Therefore, a blind approach such as "FA for everyone" is not necessarily the best course of action. Ultimately, the best approach for FA supplementation, and potentially other nutritional supplements, will include customized patient genomic profiles for determining dose and duration.
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Affiliation(s)
- Chandra S Mayanil
- Developmental Biology Program, Children's Memorial Research Center, Department of Pediatric Neurosurgery, Children's Memorial Medical Center and Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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16
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Adly MA. Analysis of the expression pattern of the carrier protein transthyretin and its receptor megalin in the human scalp skin and hair follicles: hair cycle-associated changes. Histochem Cell Biol 2010; 134:591-602. [PMID: 21104416 DOI: 10.1007/s00418-010-0763-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/27/2010] [Indexed: 11/28/2022]
Abstract
Transthyretin is a serum and cerebrospinal fluid protein synthesized early in development by the liver, choroid plexus and several other tissues. It is a carrier protein for the antioxidant vitamins, retinol, and thyroid hormones. Transthyretin helps internalize thyroxine and retinol-binding protein into cells by binding to megalin, which is a multi-ligand receptor expressed on the luminal surface of various epithelia. We investigated the expression of transthyretin and its receptor megalin in the human skin; however, their expression pattern in the hair follicle is still to be elucidated. This study addresses this issue and tests the hypothesis that "the expression of transthyretin and megalin undergoes hair follicle cycle-dependent changes." A total of 50 normal human scalp skin biopsies were examined (healthy females, 53-62 years) using immunofluorescence staining methods and real-time PCR. In each case, 50 hair follicles were analyzed (35, 10, and 5 follicles in anagen, catagen, and telogen, respectively). Transthyretin and megalin were prominently expressed in the human scalp skin and hair follicles, on both gene and protein levels. The concentrations of transthyretin and megalin were 0.12 and 0.03 Ul/ml, respectively, as indicated by PCR. The expression showed hair follicle cycle-associated changes i.e., strong expression during early and mature anagen, very weak expression during catagen and moderate expression during telogen. The expression values of these proteins in the anagen were statistically significantly higher than those of either catagen or telogen hair follicles (P ≤ 0.001). This study provides the first morphologic indication that transthyretin and megalin are variably expressed in the human scalp skin and hair follicles. It also reports variations in the expression of these proteins during hair follicle cycling. The clinical ramifications of these findings are open for further investigations.
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Affiliation(s)
- Mohamed A Adly
- Department of Zoology, Faculty of Science, Sohag University, Sohag, Egypt.
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17
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Zohn IE, Sarkar AA. The visceral yolk sac endoderm provides for absorption of nutrients to the embryo during neurulation. ACTA ACUST UNITED AC 2010; 88:593-600. [DOI: 10.1002/bdra.20705] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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18
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Fukuda A, Cao F, Morita S, Yamada K, Jincho Y, Tane S, Sotomaru Y, Kono T. Identification of inappropriately reprogrammed genes by large-scale transcriptome analysis of individual cloned mouse blastocysts. PLoS One 2010; 5:e11274. [PMID: 20614022 PMCID: PMC2894852 DOI: 10.1371/journal.pone.0011274] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2010] [Accepted: 06/02/2010] [Indexed: 01/11/2023] Open
Abstract
Although cloned embryos generated by somatic/embryonic stem cell nuclear transfer (SECNT) certainly give rise to viable individuals, they can often undergo embryonic arrest at any stage of embryogenesis, leading to diverse morphological abnormalities. In an effort to gain further insights into reprogramming and the properties of SECNT embryos, we performed a large-scale gene expression profiling of 87 single blastocysts using GeneChip microarrays. Sertoli cells, cumulus cells, and embryonic stem cells were used as donor cells. The gene expression profiles of 87 blastocysts were subjected to microarray analysis. Using principal component analysis and hierarchical clustering, the gene expression profiles were clearly classified into 3 clusters corresponding to the type of donor cell. The results revealed that each type of SECNT embryo had a unique gene expression profile that was strictly dependent upon the type of donor cells, although there was considerable variation among the individual profiles within each group. This suggests that the reprogramming process is distinct for embryos cloned from different types of donor cells. Furthermore, on the basis of the results of comparison analysis, we identified 35 genes that were inappropriately reprogrammed in most of the SECNT embryos; our findings demonstrated that some of these genes, such as Asz1, Xlr3a and App, were appropriately reprogrammed only in the embryos with a transcriptional profile that was the closest to that of the controls. Our findings provide a framework to further understand the reprogramming in SECNT embryos.
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Affiliation(s)
- Atsushi Fukuda
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Feng Cao
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Shinnosuke Morita
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Kaori Yamada
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Yuko Jincho
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Shouji Tane
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
| | - Yusuke Sotomaru
- Natural Science Centre for Basic Research and Development, Hiroshima University, Hiroshima, Japan
| | - Tomohiro Kono
- Department of Bioscience, Tokyo University of Agriculture, Tokyo, Japan
- * E-mail:
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Abstract
Neural tube defects (NTDs) are common, severe congenital malformations whose causation involves multiple genes and environmental factors. Although more than 200 genes are known to cause NTDs in mice, there has been rather limited progress in delineating the molecular basis underlying most human NTDs. Numerous genetic studies have been carried out to investigate candidate genes in cohorts of patients, with particular reference to those that participate in folate one-carbon metabolism. Although the homocysteine remethylation gene MTHFR has emerged as a risk factor in some human populations, few other consistent findings have resulted from this approach. Similarly, attention focused on the human homologues of mouse NTD genes has contributed only limited positive findings to date, although an emerging association between genes of the non-canonical Wnt (planar cell polarity) pathway and NTDs provides candidates for future studies. Priorities for the next phase of this research include: (i) larger studies that are sufficiently powered to detect significant associations with relatively minor risk factors; (ii) analysis of multiple candidate genes in groups of well-genotyped individuals to detect possible gene-gene interactions; (iii) use of high throughput genomic technology to evaluate the role of copy number variants and to detect 'private' and regulatory mutations, neither of which have been studied to date; (iv) detailed analysis of patient samples stratified by phenotype to enable, for example, hypothesis-driven testing of candidates genes in groups of NTDs with specific defects of folate metabolism, or in groups of fetuses with well-defined phenotypes such as craniorachischisis.
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Joó JG. [Recent perspectives on the development of the central nervous system and the genetic background of neural tube defects]. Orv Hetil 2009; 150:873-82. [PMID: 19403431 DOI: 10.1556/oh.2009.28564] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Neural tube defects are rare and mostly lethal malformations. The pattern of inheritance of these malformations is multifactorial, rendering the identification of the underlying causes. Numerous studies have been conducted to elucidate the genetic basis of the development of the central nervous system. Essential signaling pathways of the development of the central nervous system include the planar cell polarity pathway, which is important for the initiation of neural tube closure as well as sonic hedgehog pathway, which regulates the neural plate bending. Genes and their mutations influencing the different stages of neurulation have been investigated for their eventual role in the development of these malformations. Among the environmental factors, folic acid seems to be the most important modifier of the risk of human neural tube defects. Genes of the folate metabolism pathways have also been investigated to identify mutations resulting in increased risk of NTDs. In this review the author has attempted to summarize the knowledge on neural tube defects, with special regard to genetic factors of the etiology.
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Affiliation(s)
- József Gábor Joó
- Semmelweis Egyetem, Altalános Orvostudományi Kar I. Szülészeti és Nogyógyászati Klinika Budapest Baross utca 27. 1088.
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21
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Joó JG. Recent perspectives on the genetic background of neural tube defects with special regard to iniencephaly. Expert Rev Mol Diagn 2009; 9:281-93. [PMID: 19379086 DOI: 10.1586/erm.09.4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Iniencephaly is a rare and mostly lethal type of neural tube defect. The pattern of inheritance of this group of malformations is multifactorial, rendering the identification of the underlying causes. Numerous studies have been conducted to elucidate the genetic basis of human neurulation. Essential signaling pathways of the development of the CNS include the planar cell polarity pathway, which is important for the initiation of neural tube closure, as well as the sonic hedgehog pathway, which regulates the neural plate bending. Genes influencing the different stages of neurulation have been investigated for their eventual role in the development of these malformations. Among the environmental factors, folic acid seems to be the most important modifier of the risk of human neural tube defects. Genes of the folate metabolism pathways have also been investigated to identify mutations resulting in increased risk of neural tube defects. In this review we have attempted to summarize the knowledge on iniencephaly and neural tube defects, with special regard to genetic factors of the etiology.
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Affiliation(s)
- József Gábor Joó
- 1st Department of Obstetrics and Gynecology, Faculty of General Medicine, Semmelweis University, 1088 Budapest, Baross utca 27, Hungary.
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