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Fazzari V, Moo-Choy A, Panoyan MA, Abbatangelo CL, Polimanti R, Novroski NM, Wendt FR. Multi-ancestry tandem repeat association study of hair colour using exome-wide sequencing. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.24.581865. [PMID: 38464141 PMCID: PMC10925195 DOI: 10.1101/2024.02.24.581865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Hair colour variation is influenced by hundreds of positions across the human genome but this genetic contribution has only been narrowly explored. Genome-wide association studies identified single nucleotide polymorphisms (SNPs) influencing hair colour but the biology underlying these associations is challenging to interpret. We report 16 tandem repeats (TRs) with effects on different models of hair colour plus two TRs associated with hair colour in diverse ancestry groups. Several of these TRs expand or contract amino acid coding regions of their localized protein such that structure, and by extension function, may be altered. We also demonstrate that independent of SNP variation, these TRs can be used to great an additive polygenic score that predicts darker hair colour. This work adds to the growing body of evidence regarding TR influence on human traits with relatively large and independent effects relative to surrounding SNP variation.
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Pires C, Saramago A, Moura MM, Li J, Donato S, Marques IJ, Belo H, Machado AC, Cabrera R, Grünewald TGP, Leite V, Cavaco BM. Identification of Germline FOXE1 and Somatic MAPK Pathway Gene Alterations in Patients with Malignant Struma Ovarii, Cleft Palate and Thyroid Cancer. Int J Mol Sci 2024; 25:1966. [PMID: 38396644 PMCID: PMC10888156 DOI: 10.3390/ijms25041966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/25/2024] [Accepted: 02/01/2024] [Indexed: 02/25/2024] Open
Abstract
Germline variants in the FOXE1 transcription factor have been associated with thyroid ectopy, cleft palate (CP) and thyroid cancer (TC). Here, we aimed to clarify the role of FOXE1 in Portuguese families (F1 and F2) with members diagnosed with malignant struma ovarii (MSO), an ovarian teratoma with ectopic malignant thyroid tissue, papillary TC (PTC) and CP. Two rare germline heterozygous variants in the FOXE1 promoter were identified: F1) c.-522G>C, in the proband (MSO) and her mother (asymptomatic); F2) c.9C>T, in the proband (PTC), her sister and her mother (CP). Functional studies using rat normal thyroid (PCCL3) and human PTC (TPC-1) cells revealed that c.9C>T decreased FOXE1 promoter transcriptional activity in both cell models, while c.-522G>C led to opposing activities in the two models, when compared to the wild type. Immunohistochemistry and RT-qPCR analyses of patients' thyroid tumours revealed lower FOXE1 expression compared to adjacent normal and hyperplastic thyroid tissues. The patient with MSO also harboured a novel germline AXIN1 variant, presenting a loss of heterozygosity in its benign and malignant teratoma tissues and observable β-catenin cytoplasmic accumulation. The sequencing of the F1 (MSO) and F2 (PTC) probands' tumours unveiled somatic BRAF and HRAS variants, respectively. Germline FOXE1 and AXIN1 variants might have a role in thyroid ectopy and cleft palate, which, together with MAPK pathway activation, may contribute to tumours' malignant transformation.
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Affiliation(s)
- Carolina Pires
- Unidade de Investigação em Patobiologia Molecular (UIPM), Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), 1099-023 Lisboa, Portugal; (C.P.); (A.S.); (M.M.M.); (I.J.M.); (H.B.); (V.L.)
- NOVA Medical School (NMS)-Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal
| | - Ana Saramago
- Unidade de Investigação em Patobiologia Molecular (UIPM), Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), 1099-023 Lisboa, Portugal; (C.P.); (A.S.); (M.M.M.); (I.J.M.); (H.B.); (V.L.)
| | - Margarida M. Moura
- Unidade de Investigação em Patobiologia Molecular (UIPM), Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), 1099-023 Lisboa, Portugal; (C.P.); (A.S.); (M.M.M.); (I.J.M.); (H.B.); (V.L.)
| | - Jing Li
- Hopp Children’s Cancer Center (KiTZ), 69120 Heidelberg, Germany; (J.L.); (T.G.P.G.)
- Division of Translational Pediatric Sarcoma Research, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), 69120 Heidelberg, Germany
- National Center for Tumor Diseases (NCT), NCT Heidelberg, a Partnership between DKFZ and Heidelberg University Hospital, 69120 Heidelberg, Germany
| | - Sara Donato
- Serviço de Endocrinologia, Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), 1099-023 Lisboa, Portugal;
| | - Inês J. Marques
- Unidade de Investigação em Patobiologia Molecular (UIPM), Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), 1099-023 Lisboa, Portugal; (C.P.); (A.S.); (M.M.M.); (I.J.M.); (H.B.); (V.L.)
- NOVA Medical School (NMS)-Faculdade de Ciências Médicas, Universidade Nova de Lisboa, 1169-056 Lisboa, Portugal
| | - Hélio Belo
- Unidade de Investigação em Patobiologia Molecular (UIPM), Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), 1099-023 Lisboa, Portugal; (C.P.); (A.S.); (M.M.M.); (I.J.M.); (H.B.); (V.L.)
| | - Ana C. Machado
- Serviço de Anatomia Patológica, Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), 1099-023 Lisboa, Portugal; (A.C.M.); (R.C.)
| | - Rafael Cabrera
- Serviço de Anatomia Patológica, Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), 1099-023 Lisboa, Portugal; (A.C.M.); (R.C.)
| | - Thomas G. P. Grünewald
- Hopp Children’s Cancer Center (KiTZ), 69120 Heidelberg, Germany; (J.L.); (T.G.P.G.)
- Division of Translational Pediatric Sarcoma Research, German Cancer Research Center (DKFZ), German Cancer Consortium (DKTK), 69120 Heidelberg, Germany
- National Center for Tumor Diseases (NCT), NCT Heidelberg, a Partnership between DKFZ and Heidelberg University Hospital, 69120 Heidelberg, Germany
- Institute of Pathology, Heidelberg University Hospital, 69120 Heidelberg, Germany
| | - Valeriano Leite
- Unidade de Investigação em Patobiologia Molecular (UIPM), Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), 1099-023 Lisboa, Portugal; (C.P.); (A.S.); (M.M.M.); (I.J.M.); (H.B.); (V.L.)
- Serviço de Endocrinologia, Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), 1099-023 Lisboa, Portugal;
| | - Branca M. Cavaco
- Unidade de Investigação em Patobiologia Molecular (UIPM), Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), 1099-023 Lisboa, Portugal; (C.P.); (A.S.); (M.M.M.); (I.J.M.); (H.B.); (V.L.)
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Raterman ST, Von Den Hoff JW, Dijkstra S, De Vriend C, Te Morsche T, Broekman S, Zethof J, De Vrieze E, Wagener FADTG, Metz JR. Disruption of the foxe1 gene in zebrafish reveals conserved functions in development of the craniofacial skeleton and the thyroid. Front Cell Dev Biol 2023; 11:1143844. [PMID: 36994096 PMCID: PMC10040582 DOI: 10.3389/fcell.2023.1143844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 02/28/2023] [Indexed: 03/14/2023] Open
Abstract
Introduction: Mutations in the FOXE1 gene are implicated in cleft palate and thyroid dysgenesis in humans.Methods: To investigate whether zebrafish could provide meaningful insights into the etiology of developmental defects in humans related to FOXE1, we generated a zebrafish mutant that has a disruption in the nuclear localization signal in the foxe1 gene, thereby restraining nuclear access of the transcription factor. We characterized skeletal development and thyroidogenesis in these mutants, focusing on embryonic and larval stages.Results: Mutant larvae showed aberrant skeletal phenotypes in the ceratohyal cartilage and had reduced whole body levels of Ca, Mg and P, indicating a critical role for foxe1 in early skeletal development. Markers of bone and cartilage (precursor) cells were differentially expressed in mutants in post-migratory cranial neural crest cells in the pharyngeal arch at 1 dpf, at induction of chondrogenesis at 3 dpf and at the start of endochondral bone formation at 6 dpf. Foxe1 protein was detected in differentiated thyroid follicles, suggesting a role for the transcription factor in thyroidogenesis, but thyroid follicle morphology or differentiation were unaffected in mutants.Discussion: Taken together, our findings highlight the conserved role of Foxe1 in skeletal development and thyroidogenesis, and show differential signaling of osteogenic and chondrogenic genes related to foxe1 mutation.
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Affiliation(s)
- Sophie T. Raterman
- Department of Dentistry—Orthodontics and Craniofacial Biology, Radboud Institute of Molecular Life Sciences (RIMLS), Radboud University Medical Center, Nijmegen, Netherlands
- Department of Animal Ecology and Physiology, Radboud Institute for Biological and Environmental Sciences (RIBES), Radboud University, Nijmegen, Netherlands
- *Correspondence: Sophie T. Raterman,
| | - Johannes W. Von Den Hoff
- Department of Dentistry—Orthodontics and Craniofacial Biology, Radboud Institute of Molecular Life Sciences (RIMLS), Radboud University Medical Center, Nijmegen, Netherlands
| | - Sietske Dijkstra
- Department of Animal Ecology and Physiology, Radboud Institute for Biological and Environmental Sciences (RIBES), Radboud University, Nijmegen, Netherlands
| | - Cheyenne De Vriend
- Department of Animal Ecology and Physiology, Radboud Institute for Biological and Environmental Sciences (RIBES), Radboud University, Nijmegen, Netherlands
| | - Tim Te Morsche
- Department of Animal Ecology and Physiology, Radboud Institute for Biological and Environmental Sciences (RIBES), Radboud University, Nijmegen, Netherlands
| | - Sanne Broekman
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, Netherlands
| | - Jan Zethof
- Department of Animal Ecology and Physiology, Radboud Institute for Biological and Environmental Sciences (RIBES), Radboud University, Nijmegen, Netherlands
| | - Erik De Vrieze
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, Netherlands
| | - Frank A. D. T. G. Wagener
- Department of Dentistry—Orthodontics and Craniofacial Biology, Radboud Institute of Molecular Life Sciences (RIMLS), Radboud University Medical Center, Nijmegen, Netherlands
| | - Juriaan R. Metz
- Department of Animal Ecology and Physiology, Radboud Institute for Biological and Environmental Sciences (RIBES), Radboud University, Nijmegen, Netherlands
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Grassi ES, Rurale G, de Filippis T, Gentilini D, Carbone E, Coscia F, Uraghi S, Bullock M, Clifton-Bligh RJ, Gupta AK, Persani L. The length of FOXE1 polyalanine tract in congenital hypothyroidism: Evidence for a pathogenic role from familial, molecular and cohort studies. Front Endocrinol (Lausanne) 2023; 14:1127312. [PMID: 37008944 PMCID: PMC10060985 DOI: 10.3389/fendo.2023.1127312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 02/28/2023] [Indexed: 03/18/2023] Open
Abstract
INTRODUCTION FOXE1 is required for thyroid function and its homozygous mutations cause a rare syndromic form of congenital hypothyroidism (CH). FOXE1 has a polymorphic polyalanine tract whose involvement in thyroid pathology is controversial. Starting from genetic studies in a CH family, we explored the functional role and involvement of FOXE1 variations in a large CH population. METHODS We applied NGS screening to a large CH family and a cohort of 1752 individuals and validated these results by in silico modeling and in vitro experiments. RESULTS A new heterozygous FOXE1 variant segregated with 14-Alanine tract homozygosity in 5 CH siblings with athyreosis. The p.L107V variant demonstrated to significantly reduce the FOXE1 transcriptional activity. The 14-Alanine-FOXE1 displayed altered subcellular localization and significantly impaired synergy with other transcription factors, when compared with the more common 16-Alanine-FOXE1. The CH group with thyroid dysgenesis was largely and significantly enriched with the 14-Alanine-FOXE1 homozygosity. DISCUSSION We provide new evidence that disentangle the pathophysiological role of FOXE1 polyalanine tract, thereby significantly broadening the perspective on the role of FOXE1 in the complex pathogenesis of CH. FOXE1 should be therefore added to the group of polyalanine disease-associated transcription factors.
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Affiliation(s)
- Elisa Stellaria Grassi
- Department of Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Giuditta Rurale
- Laboratory of Endocrine and Metabolic Research, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Auxologico Italiano, Milan, Italy
| | - Tiziana de Filippis
- Laboratory of Endocrine and Metabolic Research, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Auxologico Italiano, Milan, Italy
| | - Davide Gentilini
- Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy
- Istituto Auxologico Italiano, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), Bioinformatics and Statistical Genomics Unit, Milano, Italy
| | - Erika Carbone
- Laboratory of Endocrine and Metabolic Research, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Auxologico Italiano, Milan, Italy
| | | | - Sarah Uraghi
- Department of Health Science, University of Milan, Milan, Italy
| | - Martyn Bullock
- Cancer Genetics Laboratory, Kolling Institute, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
| | - Roderick J. Clifton-Bligh
- Cancer Genetics Laboratory, Kolling Institute, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, Australia
- Department of Endocrinology, Royal North Shore Hospital, St Leonards, NSW, Australia
| | - Abhinav K. Gupta
- Department of Diabetes and Endocrine Sciences, CK Birla Hospitals, Jaipur, Rajasthan, India
| | - Luca Persani
- Department of Biotechnology and Translational Medicine, University of Milan, Milan, Italy
- Laboratory of Endocrine and Metabolic Research, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Auxologico Italiano, Milan, Italy
- *Correspondence: Luca Persani,
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Moran C, Schoenmakers N, Visser WE, Schoenmakers E, Agostini M, Chatterjee K. Genetic disorders of thyroid development, hormone biosynthesis and signalling. Clin Endocrinol (Oxf) 2022; 97:502-514. [PMID: 35999191 PMCID: PMC9544560 DOI: 10.1111/cen.14817] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 05/24/2022] [Accepted: 07/04/2022] [Indexed: 11/28/2022]
Abstract
Development and differentiation of the thyroid gland is directed by expression of specific transcription factors in the thyroid follicular cell which mediates hormone biosynthesis. Membrane transporters are rate-limiting for cellular entry of thyroid hormones (TH) (T4 and T3) into some tissues, with selenocysteine-containing, deiodinase enzymes (DIO1 and DIO2) converting T4 to the biologically active hormone T3. TH regulate expression of target genes via hormone-inducible nuclear receptors (TRα and TRβ) to exert their physiological effects. Primary congenital hypothyroidism (CH) due to thyroid dysgenesis may be mediated by defects in thyroid transcription factors or impaired thyroid stimulating hormone receptor function. Dyshormonogenic CH is usually due to mutations in genes mediating thyroidal iodide transport, organification or iodotyrosine synthesis and recycling. Disorders of TH signalling encompass conditions due to defects in membrane TH transporters, impaired hormone metabolism due to deficiency of deiodinases and syndromes of Resistance to thyroid hormone due to pathogenic variants in either TRα or TRβ. Here, we review the genetic basis, pathogenesis and clinical features of congenital, dysgenetic or dyshormonogenic hypothyroidism and disorders of TH transport, metabolism and action.
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Affiliation(s)
- Carla Moran
- Wellcome Trust‐MRC Institute of Metabolic ScienceUniversity of CambridgeCambridgeUK
- Present address:
Beacon Hospital and School of MedicineUniversity CollegeDublinIreland
| | - Nadia Schoenmakers
- Wellcome Trust‐MRC Institute of Metabolic ScienceUniversity of CambridgeCambridgeUK
| | - W. Edward Visser
- Department of Internal MedicineErasmus Medical Center, Academic Center for Thyroid DiseasesRotterdamThe Netherlands
| | - Erik Schoenmakers
- Wellcome Trust‐MRC Institute of Metabolic ScienceUniversity of CambridgeCambridgeUK
| | - Maura Agostini
- Wellcome Trust‐MRC Institute of Metabolic ScienceUniversity of CambridgeCambridgeUK
| | - Krishna Chatterjee
- Wellcome Trust‐MRC Institute of Metabolic ScienceUniversity of CambridgeCambridgeUK
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A new FOXE1 homozygous frameshift variant expands the genotypic and phenotypic spectrum of Bamforth-Lazarus syndrome. Eur J Med Genet 2022; 65:104591. [PMID: 35963604 DOI: 10.1016/j.ejmg.2022.104591] [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: 02/22/2022] [Revised: 06/21/2022] [Accepted: 08/07/2022] [Indexed: 11/22/2022]
Abstract
Bamforth-Lazarus syndrome is a rare autosomal recessive disease caused by biallelic loss-of-function variants in the FOXE1 gene. The condition is characterized by congenital hypothyroidism due to thyroid agenesis or thyroid hypoplasia, cleft palate, spiky hair, with or without choanal atresia, and bifid epiglottis. To date, seven pathogenic variants have been reported in the FOXE1 gene causing Bamforth-Lazarus syndrome. Here we report a novel homozygous loss-of-function variant in the FOXE1 gene NM_004473.4:c.141dupC:p.(Leu49Profs*75) leading to congenital hypothyroidism due to thyroid agenesis, scalp hair abnormalities, cleft palate, small areola, cafe-au-lait spots, mild bilateral hearing loss, skin abnormalities, and facial dysmorphism. We describe the evolving phenotype in the patient with age and review previous variants reported in FOXE1. This report further expands the clinical and molecular spectrum of Bamforth-Lazarus syndrome.
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Acar S, Gürsoy S, Arslan G, Nalbantoğlu Ö, Hazan F, Köprülü Ö, Özkaya B, Özkan B. Screening of 23 candidate genes by next-generation sequencing of patients with permanent congenital hypothyroidism: novel variants in TG, TSHR, DUOX2, FOXE1, and SLC26A7. J Endocrinol Invest 2022; 45:773-786. [PMID: 34780050 DOI: 10.1007/s40618-021-01706-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 11/07/2021] [Indexed: 12/11/2022]
Abstract
PURPOSE To date, many genes have been associated with congenital hypothyroidism (CH). Our aim was to identify the mutational spectrum of 23 causative genes in Turkish patients with permanent CH, including thyroid dysgenesis (TD) and dyshormonogenesis (TDH) cases. METHODS A total of 134 patients with permanent CH (130 primary, 4 central) were included. To identify the genetic etiology, we screened 23 candidate genes associated with CH by next-generation sequencing. For confirmation and to detect the status of the specific familial variant in relatives, Sanger sequencing was also performed. RESULTS Possible pathogenic variants were found in 5.2% of patients with TD and in 64.0% of the patients with normal-sized thyroid or goiter. In all patients, variants were most frequently found in TSHR, followed by TPO and TG. The same homozygous TSHB variant (c.162 + 5G > A) was identified in four patients with central CH. In addition, we detected novel variants in the TSHR, TG, SLC26A7, FOXE1, and DUOX2. CONCLUSION Genetic causes were determined in the majority of CH patients with TDH, however, despite advances in genetics, we were unable to identify the genetic etiology of most CH patients with TD, suggesting the effect of unknown genes or environmental factors. The previous studies and our findings suggest that TSHR and TPO mutations is the main genetic defect of CH in the Turkish population.
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Affiliation(s)
- S Acar
- Division of Pediatric Endocrinology, Dr. Behçet Uz Children's Education and Research Hospital, İsmet Kaptan Mh, Sezer Doğan Sokağı No:11, 35210, Konak/Izmir, Turkey.
| | - S Gürsoy
- Division of Pediatric Genetics, Dr. Behçet Uz Children's Education and Research Hospital, Izmir, Turkey
| | - G Arslan
- Division of Pediatric Endocrinology, Dr. Behçet Uz Children's Education and Research Hospital, İsmet Kaptan Mh, Sezer Doğan Sokağı No:11, 35210, Konak/Izmir, Turkey
| | - Ö Nalbantoğlu
- Division of Pediatric Endocrinology, Dr. Behçet Uz Children's Education and Research Hospital, İsmet Kaptan Mh, Sezer Doğan Sokağı No:11, 35210, Konak/Izmir, Turkey
| | - F Hazan
- Department of Medical Genetics, Dr. Behçet Uz Children's Education and Research Hospital, Izmir, Turkey
| | - Ö Köprülü
- Division of Pediatric Endocrinology, Dr. Behçet Uz Children's Education and Research Hospital, İsmet Kaptan Mh, Sezer Doğan Sokağı No:11, 35210, Konak/Izmir, Turkey
| | - B Özkaya
- Division of Pediatric Endocrinology, Dr. Behçet Uz Children's Education and Research Hospital, İsmet Kaptan Mh, Sezer Doğan Sokağı No:11, 35210, Konak/Izmir, Turkey
| | - B Özkan
- Division of Pediatric Endocrinology, Dr. Behçet Uz Children's Education and Research Hospital, İsmet Kaptan Mh, Sezer Doğan Sokağı No:11, 35210, Konak/Izmir, Turkey
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Cerrizuela S, Vega-Lopez GA, Méndez-Maldonado K, Velasco I, Aybar MJ. The crucial role of model systems in understanding the complexity of cell signaling in human neurocristopathies. WIREs Mech Dis 2022; 14:e1537. [PMID: 35023327 DOI: 10.1002/wsbm.1537] [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: 03/30/2021] [Revised: 08/26/2021] [Accepted: 08/30/2021] [Indexed: 11/07/2022]
Abstract
Animal models are useful to study the molecular, cellular, and morphogenetic mechanisms underlying normal and pathological development. Cell-based study models have emerged as an alternative approach to study many aspects of human embryonic development and disease. The neural crest (NC) is a transient, multipotent, and migratory embryonic cell population that generates a diverse group of cell types that arises during vertebrate development. The abnormal formation or development of the NC results in neurocristopathies (NCPs), which are characterized by a broad spectrum of functional and morphological alterations. The impaired molecular mechanisms that give rise to these multiphenotypic diseases are not entirely clear yet. This fact, added to the high incidence of these disorders in the newborn population, has led to the development of systematic approaches for their understanding. In this article, we have systematically reviewed the ways in which experimentation with different animal and cell model systems has improved our knowledge of NCPs, and how these advances might contribute to the development of better diagnostic and therapeutic tools for the treatment of these pathologies. This article is categorized under: Congenital Diseases > Genetics/Genomics/Epigenetics Congenital Diseases > Stem Cells and Development Congenital Diseases > Molecular and Cellular Physiology Neurological Diseases > Genetics/Genomics/Epigenetics.
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Affiliation(s)
- Santiago Cerrizuela
- Division of Molecular Neurobiology, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT), Tucumán, Argentina
| | - Guillermo A Vega-Lopez
- Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT), Tucumán, Argentina.,Instituto de Biología "Dr. Francisco D. Barbieri", Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Tucumán, Argentina
| | - Karla Méndez-Maldonado
- Instituto de Fisiología Celular - Neurociencias, Universidad Nacional Autónoma de México, Ciudad de México, Mexico.,Departamento de Fisiología y Farmacología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - Iván Velasco
- Instituto de Fisiología Celular - Neurociencias, Universidad Nacional Autónoma de México, Ciudad de México, Mexico.,Laboratorio de Reprogramación Celular del Instituto de Fisiología Celular, UNAM en el Instituto Nacional de Neurología y Neurocirugía "Manuel Velasco Suárez", Ciudad de México, Mexico
| | - Manuel J Aybar
- Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT), Tucumán, Argentina.,Instituto de Biología "Dr. Francisco D. Barbieri", Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Tucumán, Argentina
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Li S, Zhang Z, Peng H, Xiao X. YY1-induced up-regulation of FOXE1 is negatively regulated by miR-129-5p and contributes to the progression of papillary thyroid microcarcinoma. Pathol Res Pract 2021; 221:153337. [PMID: 33798911 DOI: 10.1016/j.prp.2020.153337] [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: 09/23/2020] [Revised: 12/25/2020] [Accepted: 12/30/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND Papillary thyroid microcarcinoma (PTM) belongs to papillary carcinomas whose length is about 1.0 cm. According to previous studies, FOXE1 is a transcription factor involved in the progression of papillary thyroid carcinoma (PTC). However, its detailed upstream mechanism remains unknown in PTM. OBJECTIVE Our study aimed at detecting and verifying the up-regulation of FOXE1 in PTM cell lines. METHODS FXOE1 expression was detected in PTM and normal cells through RT-qPCR. Loss-of-function experiments were conducted to identify the effect of silenced FOXE1 on cell proliferation, apoptosis, migration and invasion. Mechanism experiments were carried out to explore the upstream molecular mechanism of FOXE1. RESULTS Knockdown of FOXE1 could lead to the inhibition on cell proliferation, migration and invasion while positively regulating cell apoptosis. Importantly, Yin-Yang-1 (YY1) could boost the transcription of FOXE1, thereby upregulating FOXE1. Also, the binding potential of miR-129-5p to FOXE1 was identified in PTM cells and MiR-129-5p could target FOXE1. In addition, the cellular processes in PTM were hindered with the increase of miR-129-5p expression level. CONCLUSION Our research suggested that the up-regulation of FOXE1 is regulated by YY1 and miR-129-5p, which may contribute to PTM progression.
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Affiliation(s)
- Siyi Li
- Department of Vascular Thyroid and Breast Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, 524001, China
| | - Zhi Zhang
- Department of Vascular Thyroid and Breast Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, 524001, China
| | - Hongjuan Peng
- Department of Ophthalmology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, 524001, China
| | - Xiongsheng Xiao
- Department of Vascular Thyroid and Breast Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, 524001, China.
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10
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Reynolds K, Zhang S, Sun B, Garland MA, Ji Y, Zhou CJ. Genetics and signaling mechanisms of orofacial clefts. Birth Defects Res 2020; 112:1588-1634. [PMID: 32666711 DOI: 10.1002/bdr2.1754] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 06/11/2020] [Accepted: 06/15/2020] [Indexed: 12/31/2022]
Abstract
Craniofacial development involves several complex tissue movements including several fusion processes to form the frontonasal and maxillary structures, including the upper lip and palate. Each of these movements are controlled by many different factors that are tightly regulated by several integral morphogenetic signaling pathways. Subject to both genetic and environmental influences, interruption at nearly any stage can disrupt lip, nasal, or palate fusion and result in a cleft. Here, we discuss many of the genetic risk factors that may contribute to the presentation of orofacial clefts in patients, and several of the key signaling pathways and underlying cellular mechanisms that control lip and palate formation, as identified primarily through investigating equivalent processes in animal models, are examined.
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Affiliation(s)
- Kurt Reynolds
- Department of Biochemistry and Molecular Medicine, University of California Davis, School of Medicine, Sacramento, California, USA.,Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children-Northern California; University of California Davis, School of Medicine, Sacramento, California, USA.,Biochemistry, Molecular, Cellular, and Developmental Biology (BMCDB) Graduate Group, University of California, Davis, California, USA
| | - Shuwen Zhang
- Department of Biochemistry and Molecular Medicine, University of California Davis, School of Medicine, Sacramento, California, USA.,Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children-Northern California; University of California Davis, School of Medicine, Sacramento, California, USA
| | - Bo Sun
- Department of Biochemistry and Molecular Medicine, University of California Davis, School of Medicine, Sacramento, California, USA.,Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children-Northern California; University of California Davis, School of Medicine, Sacramento, California, USA
| | - Michael A Garland
- Department of Biochemistry and Molecular Medicine, University of California Davis, School of Medicine, Sacramento, California, USA.,Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children-Northern California; University of California Davis, School of Medicine, Sacramento, California, USA
| | - Yu Ji
- Department of Biochemistry and Molecular Medicine, University of California Davis, School of Medicine, Sacramento, California, USA.,Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children-Northern California; University of California Davis, School of Medicine, Sacramento, California, USA.,Biochemistry, Molecular, Cellular, and Developmental Biology (BMCDB) Graduate Group, University of California, Davis, California, USA
| | - Chengji J Zhou
- Department of Biochemistry and Molecular Medicine, University of California Davis, School of Medicine, Sacramento, California, USA.,Institute for Pediatric Regenerative Medicine, Shriners Hospitals for Children-Northern California; University of California Davis, School of Medicine, Sacramento, California, USA.,Biochemistry, Molecular, Cellular, and Developmental Biology (BMCDB) Graduate Group, University of California, Davis, California, USA
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11
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Stoupa A, Adam F, Kariyawasam D, Strassel C, Gawade S, Szinnai G, Kauskot A, Lasne D, Janke C, Natarajan K, Schmitt A, Bole-Feysot C, Nitschke P, Léger J, Jabot-Hanin F, Tores F, Michel A, Munnich A, Besmond C, Scharfmann R, Lanza F, Borgel D, Polak M, Carré A. TUBB1 mutations cause thyroid dysgenesis associated with abnormal platelet physiology. EMBO Mol Med 2019; 10:emmm.201809569. [PMID: 30446499 PMCID: PMC6284387 DOI: 10.15252/emmm.201809569] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The genetic causes of congenital hypothyroidism due to thyroid dysgenesis (TD) remain largely unknown. We identified three novel TUBB1 gene mutations that co‐segregated with TD in three distinct families leading to 1.1% of TUBB1 mutations in TD study cohort. TUBB1 (Tubulin, Beta 1 Class VI) encodes for a member of the β‐tubulin protein family. TUBB1 gene is expressed in the developing and adult thyroid in humans and mice. All three TUBB1 mutations lead to non‐functional α/β‐tubulin dimers that cannot be incorporated into microtubules. In mice, Tubb1 knock‐out disrupted microtubule integrity by preventing β1‐tubulin incorporation and impaired thyroid migration and thyroid hormone secretion. In addition, TUBB1 mutations caused the formation of macroplatelets and hyperaggregation of human platelets after stimulation by low doses of agonists. Our data highlight unexpected roles for β1‐tubulin in thyroid development and in platelet physiology. Finally, these findings expand the spectrum of the rare paediatric diseases related to mutations in tubulin‐coding genes and provide new insights into the genetic background and mechanisms involved in congenital hypothyroidism and thyroid dysgenesis.
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Affiliation(s)
- Athanasia Stoupa
- INSERM U1016, Faculté de Médecine, Cochin Institute, Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,IMAGINE Institute Affiliate, Paris, France.,RARE Disorder Center: Centre des Maladies Endocriniennes Rares de la Croissance et du Développement, Paris, France.,Pediatric Endocrinology, Gynecology and Diabetology Unit, Hôpital Universitaire Necker-Enfants Malades, AP-HP, Paris, France
| | - Frédéric Adam
- INSERM UMR_S1176, Paris-Sud University, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Dulanjalee Kariyawasam
- RARE Disorder Center: Centre des Maladies Endocriniennes Rares de la Croissance et du Développement, Paris, France.,Pediatric Endocrinology, Gynecology and Diabetology Unit, Hôpital Universitaire Necker-Enfants Malades, AP-HP, Paris, France
| | - Catherine Strassel
- INSERM, EFS Grand Est, BPPS UMR-S 1255, FMTS, Université de Strasbourg, Strasbourg, France
| | - Sanjay Gawade
- Department of Biomedicine, Pediatric Immunology, University of Basel, Basel, Switzerland
| | - Gabor Szinnai
- Department of Biomedicine, Pediatric Immunology, University of Basel, Basel, Switzerland.,Pediatric Endocrinology, University Children's Hospital Basel, University of Basel, Basel, Switzerland
| | - Alexandre Kauskot
- INSERM UMR_S1176, Paris-Sud University, Université Paris-Saclay, Le Kremlin-Bicêtre, France
| | - Dominique Lasne
- INSERM UMR_S1176, Paris-Sud University, Université Paris-Saclay, Le Kremlin-Bicêtre, France.,Necker Children's Hospital, Biological Hematology Service, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Carsten Janke
- Institut Curie, CNRS UMR3348, PSL Research University, Orsay, France.,Institut Curie, CNRS UMR3348, Université Paris Sud, Université Paris-Saclay, Orsay, France
| | - Kathiresan Natarajan
- Institut Curie, CNRS UMR3348, PSL Research University, Orsay, France.,Institut Curie, CNRS UMR3348, Université Paris Sud, Université Paris-Saclay, Orsay, France
| | - Alain Schmitt
- INSERM U1016, Faculté de Médecine, Cochin Institute, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Christine Bole-Feysot
- Genomic Platform, INSERM UMR 1163, IMAGINE Institute, Paris Descartes University, Sorbonne Paris Cité, Paris, France
| | - Patrick Nitschke
- Bioinformatics Platform, IMAGINE Institute, Paris Descartes University, Paris, France
| | - Juliane Léger
- RARE Disorder Center: Centre des Maladies Endocriniennes Rares de la Croissance et du Développement, Paris, France.,Pediatric Endocrinology Unit, Hôpital Universitaire Robert Debré, AP-HP, Paris, France.,Paris Diderot University, Sorbonne Paris Cité, Paris, France.,INSERM UMR 1141, DHU Protect, Paris, France
| | - Fabienne Jabot-Hanin
- Bioinformatics Platform, IMAGINE Institute, Paris Descartes University, Paris, France
| | - Frédéric Tores
- Bioinformatics Platform, IMAGINE Institute, Paris Descartes University, Paris, France
| | - Anita Michel
- INSERM, EFS Grand Est, BPPS UMR-S 1255, FMTS, Université de Strasbourg, Strasbourg, France
| | - Arnold Munnich
- INSERM U1163, IMAGINE Institute, Translational Genetics, Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,Department of Genetics, Hôpital Universitaire Necker-Enfants Malades, AP-HP, Paris, France
| | - Claude Besmond
- INSERM U1163, IMAGINE Institute, Translational Genetics, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Raphaël Scharfmann
- INSERM U1016, Faculté de Médecine, Cochin Institute, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - François Lanza
- INSERM, EFS Grand Est, BPPS UMR-S 1255, FMTS, Université de Strasbourg, Strasbourg, France
| | - Delphine Borgel
- INSERM UMR_S1176, Paris-Sud University, Université Paris-Saclay, Le Kremlin-Bicêtre, France.,Necker Children's Hospital, Biological Hematology Service, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Michel Polak
- INSERM U1016, Faculté de Médecine, Cochin Institute, Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,IMAGINE Institute Affiliate, Paris, France.,RARE Disorder Center: Centre des Maladies Endocriniennes Rares de la Croissance et du Développement, Paris, France.,Pediatric Endocrinology, Gynecology and Diabetology Unit, Hôpital Universitaire Necker-Enfants Malades, AP-HP, Paris, France.,Fédération Parisienne pour le Dépistage et la Prévention des Handicaps de l'Enfant (FPDPHE), Paris, France
| | - Aurore Carré
- INSERM U1016, Faculté de Médecine, Cochin Institute, Université Paris Descartes, Sorbonne Paris Cité, Paris, France .,IMAGINE Institute Affiliate, Paris, France.,RARE Disorder Center: Centre des Maladies Endocriniennes Rares de la Croissance et du Développement, Paris, France
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12
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López-Márquez A, Fernández-Méndez C, Recacha P, Santisteban P. Regulation of Foxe1 by Thyrotropin and Transforming Growth Factor Beta Depends on the Interplay Between Thyroid-Specific, CREB and SMAD Transcription Factors. Thyroid 2019; 29:714-725. [PMID: 30652527 DOI: 10.1089/thy.2018.0136] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Background: Thyroid follicular cells are characterized by the expression of a specific set of genes necessary for the synthesis and secretion of thyroid hormones, which are in turn regulated by the transcription factors Nkx2-1, Pax8, and Foxe1. Thyroid differentiation is finely tuned by the balance between positive regulatory signals, including thyrotropin (TSH), and by negative regulatory signals, such as transforming growth factor beta (TGF-β), which counteracts the action of TSH. A role for Foxe1 as a mediator of hormonal and growth-factor control of thyroid differentiation has been previously suggested. Therefore, the aim of this work was to study the mechanisms governing Foxe1 expression to define the ligands and signals that regulate one of the important factors in thyroid differentiation. Methods: Expression of Foxe1 was evaluated in rat PCCl3 thyroid follicular cells under different treatments. The mouse Foxe1 promoter was cloned, and site-directed mutagenesis was undertaken to study its transcriptional regulation and to identify response elements. Protein/DNA binding assays were performed to evaluate the binding of different transcription factors, and gene-silencing approaches were used to elucidate their functional roles. Results:In silico analysis of the Foxe1 promoter identified binding sites for Nkx2-1, Pax8, Foxe1, and Smad proteins, as well as cAMP-response element (CRE) sites. It was found that both CRE-binding protein and CRE modulator were necessary for the TSH-mediated induction of Foxe1 expression via the cAMP/PKA signaling pathway. Moreover, transcription of Foxe1 was regulated by Nkx2-1 and Pax8 and by itself, suggesting an autoregulatory mechanism of activation and an important role for thyroid transcription factors. Finally, TGF-β, through Smad proteins, inhibited the TSH-induced Foxe1 expression. Conclusions: This study shows that Foxe1 is the final target of TSH/cAMP and TGF-β regulation that mediates expression of thyroid differentiation genes, and provides evidence of an interplay between CRE-binding proteins, thyroid transcription factors, and Smad proteins in its regulation. Thus, Foxe1 plays an important role in the complex transcriptional network that regulates thyroid follicular cell differentiation.
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Affiliation(s)
- Arístides López-Márquez
- 1 Instituto de Investigaciones Biomédicas "Alberto Sols," Consejo Superior de Investigaciones Científicas (CSIC) y Universidad Autónoma de Madrid (UAM), Madrid, Spain
| | - Celia Fernández-Méndez
- 1 Instituto de Investigaciones Biomédicas "Alberto Sols," Consejo Superior de Investigaciones Científicas (CSIC) y Universidad Autónoma de Madrid (UAM), Madrid, Spain
| | - Pablo Recacha
- 1 Instituto de Investigaciones Biomédicas "Alberto Sols," Consejo Superior de Investigaciones Científicas (CSIC) y Universidad Autónoma de Madrid (UAM), Madrid, Spain
| | - Pilar Santisteban
- 1 Instituto de Investigaciones Biomédicas "Alberto Sols," Consejo Superior de Investigaciones Científicas (CSIC) y Universidad Autónoma de Madrid (UAM), Madrid, Spain
- 2 CIBERONC, Instituto de Salud Carlos III, Madrid, Spain
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13
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Munoz JL. Fetal thyroid disorders: Pathophysiology, diagnosis and therapeutic approaches. J Gynecol Obstet Hum Reprod 2019; 48:231-233. [PMID: 30634005 DOI: 10.1016/j.jogoh.2019.01.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 12/17/2018] [Accepted: 01/08/2019] [Indexed: 11/28/2022]
Abstract
Fetal thyroid disorders while uncommon in general, have significant morbidity and profound effects in the neonate. Pregnancy provides the opportunity not only for the diagnosis of these conditions but also for therapeutic interventions. In careful balance, these disorders range from hypothyroidism to hyperthyroidism, both may manifest with fetal thyroid goiters as well. The intrauterine therapeutic approach of these must also weight the balance in this range as well as the maternal well being which may also express thyroid dysfunction. In this review we explore the different fetal manifestations of thyroid disease, describe the pathophysiology and therapeutic approaches both in practice and in development.
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Affiliation(s)
- Jessian L Munoz
- OB/GYN and Women's Health Institute A81, Cleveland Clinic, Cleveland, OH, 44105, USA.
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14
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Peters C, van Trotsenburg ASP, Schoenmakers N. DIAGNOSIS OF ENDOCRINE DISEASE: Congenital hypothyroidism: update and perspectives. Eur J Endocrinol 2018; 179:R297-R317. [PMID: 30324792 DOI: 10.1530/eje-18-0383] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Congenital hypothyroidism (CH) may be primary, due to a defect affecting the thyroid gland itself, or central, due to impaired thyroid-stimulating hormone (TSH)-mediated stimulation of the thyroid gland as a result of hypothalamic or pituitary pathology. Primary CH is the most common neonatal endocrine disorder, traditionally subdivided into thyroid dysgenesis (TD), referring to a spectrum of thyroid developmental abnormalities, and dyshormonogenesis, where a defective molecular pathway for thyroid hormonogenesis results in failure of hormone production by a structurally intact gland. Delayed treatment of neonatal hypothyroidism may result in profound neurodevelopmental delay; therefore, CH is screened for in developed countries to facilitate prompt diagnosis. Central congenital hypothyroidism (CCH) is a rarer entity which may occur in isolation, or (more frequently) in association with additional pituitary hormone deficits. CCH is most commonly defined biochemically by failure of appropriate TSH elevation despite subnormal thyroid hormone levels and will therefore evade diagnosis in primary, TSH-based CH-screening programmes. This review will discuss recent genetic aetiological advances in CH and summarize epidemiological data and clinical diagnostic challenges, focussing on primary CH and isolated CCH.
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Affiliation(s)
- C Peters
- Department of Endocrinology, Great Ormond Street Hospital for Children, London, UK
| | - A S P van Trotsenburg
- Department of Paediatric Endocrinology, Emma Children’s Hospital Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
| | - N Schoenmakers
- University of Cambridge Metabolic Research Laboratories, Wellcome Trust-Medical Research
Council Institute of Metabolic Science, Addenbrooke’s Hospital, Cambridge, UK
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15
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Neurocristopathies: New insights 150 years after the neural crest discovery. Dev Biol 2018; 444 Suppl 1:S110-S143. [PMID: 29802835 DOI: 10.1016/j.ydbio.2018.05.013] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 05/16/2018] [Accepted: 05/17/2018] [Indexed: 12/12/2022]
Abstract
The neural crest (NC) is a transient, multipotent and migratory cell population that generates an astonishingly diverse array of cell types during vertebrate development. These cells, which originate from the ectoderm in a region lateral to the neural plate in the neural fold, give rise to neurons, glia, melanocytes, chondrocytes, smooth muscle cells, odontoblasts and neuroendocrine cells, among others. Neurocristopathies (NCP) are a class of pathologies occurring in vertebrates, especially in humans that result from the abnormal specification, migration, differentiation or death of neural crest cells during embryonic development. Various pigment, skin, thyroid and hearing disorders, craniofacial and heart abnormalities, malfunctions of the digestive tract and tumors can also be considered as neurocristopathies. In this review we revisit the current classification and propose a new way to classify NCP based on the embryonic origin of the affected tissues, on recent findings regarding the molecular mechanisms that drive NC formation, and on the increased complexity of current molecular embryology techniques.
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16
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Bullock M, Lim G, Li C, Choi IH, Kochhar S, Liddle C, Zhang L, Clifton-Bligh RJ. Thyroid transcription factor FOXE1 interacts with ETS factor ELK1 to co-regulate TERT. Oncotarget 2018; 7:85948-85962. [PMID: 27852061 PMCID: PMC5349888 DOI: 10.18632/oncotarget.13288] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 11/06/2016] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Although FOXE1 was initially recognized for its role in thyroid organogenesis, more recently a strong association has been identified between the FOXE1 locus and thyroid cancer. The role of FOXE1 in adult thyroid, and in particular regarding cancer risk, has not been well established. We hypothesised that discovering key FOXE1 transcriptional partners would in turn identify regulatory pathways relevant to its role in oncogenesis. RESULTS In a transcription factor-binding array, ELK1 was identified to bind FOXE1. We confirmed this physical association in heterologously transfected cells by IP and mammalian two-hybrid assays. In thyroid tissue, endogenous FOXE1 was shown to bind ELK1, and using ChIP assays these factors bound thyroid-relevant gene promoters TPO and TERT in close proximity to each other. Using a combination of electromobility shift assays, TERT promoter assays and siRNA-silencing, we found that FOXE1 positively regulated TERT expression in a manner dependent upon its association with ELK1. Treating heterologously transfected thyroid cells with MEK inhibitor U0126 inhibited FOXE1-ELK1 interaction, and reduced TERT and TPO promoter activity. METHODOLOGY We investigated FOXE1 interactions within in vitro thyroid cell models and human thyroid tissue using a combination of immunoprecipitation (IP), chromatin IP (ChIP) and gene reporter assays. CONCLUSIONS FOXE1 interacts with ELK1 on thyroid relevant gene promoters, establishing a new regulatory pathway for its role in adult thyroid function. Co-regulation of TERT suggests a mechanism by which allelic variants in/near FOXE1 are associated with thyroid cancer risk.
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Affiliation(s)
- Martyn Bullock
- Cancer Genetics Laboratory, Kolling Institute of Medical Research, Royal North Shore Hospital, Sydney, Australia
| | - Grace Lim
- Cancer Genetics Laboratory, Kolling Institute of Medical Research, Royal North Shore Hospital, Sydney, Australia
| | - Cheng Li
- Cancer Genetics Laboratory, Kolling Institute of Medical Research, Royal North Shore Hospital, Sydney, Australia.,University of Sydney, Sydney, Australia
| | - In Ho Choi
- Cancer Genetics Laboratory, Kolling Institute of Medical Research, Royal North Shore Hospital, Sydney, Australia.,University of Sydney, Sydney, Australia
| | - Shivansh Kochhar
- Cancer Genetics Laboratory, Kolling Institute of Medical Research, Royal North Shore Hospital, Sydney, Australia.,University of Sydney, Sydney, Australia
| | - Chris Liddle
- University of Sydney, Sydney, Australia.,Storr Liver Centre, Westmead Millennium Institute for Medical Research, Westmead Hospital, Sydney, Australia
| | - Lei Zhang
- Institute of Molecular and Experimental Medicine, School of Medicine, Cardiff University, Cardiff, UK
| | - Roderick J Clifton-Bligh
- Cancer Genetics Laboratory, Kolling Institute of Medical Research, Royal North Shore Hospital, Sydney, Australia.,University of Sydney, Sydney, Australia.,Department of Endocrinology, Royal North Shore Hospital, Sydney, Australia
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17
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Abstract
Thyroid hormones are crucial for organismal development and homeostasis. In humans, untreated congenital hypothyroidism due to thyroid agenesis inevitably leads to cretinism, which comprises irreversible brain dysfunction and dwarfism. Elucidating how the thyroid gland - the only source of thyroid hormones in the body - develops is thus key for understanding and treating thyroid dysgenesis, and for generating thyroid cells in vitro that might be used for cell-based therapies. Here, we review the principal mechanisms involved in thyroid organogenesis and functional differentiation, highlighting how the thyroid forerunner evolved from the endostyle in protochordates to the endocrine gland found in vertebrates. New findings on the specification and fate decisions of thyroid progenitors, and the morphogenesis of precursor cells into hormone-producing follicular units, are also discussed.
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Affiliation(s)
- Mikael Nilsson
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Göteborg SE-40530, Sweden
| | - Henrik Fagman
- Sahlgrenska Cancer Center, Institute of Biomedicine, University of Gothenburg, Göteborg SE-40530, Sweden.,Department of Clinical Pathology and Genetics, Sahlgrenska University Hospital, Göteborg SE-41345, Sweden
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18
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Carré A, Stoupa A, Kariyawasam D, Gueriouz M, Ramond C, Monus T, Léger J, Gaujoux S, Sebag F, Glaser N, Zenaty D, Nitschke P, Bole-Feysot C, Hubert L, Lyonnet S, Scharfmann R, Munnich A, Besmond C, Taylor W, Polak M. Mutations in BOREALIN cause thyroid dysgenesis. Hum Mol Genet 2017; 26:599-610. [PMID: 28025328 DOI: 10.1093/hmg/ddw419] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 12/02/2016] [Indexed: 12/31/2022] Open
Abstract
Congenital hypothyroidism is the most common neonatal endocrine disorder and is primarily caused by developmental abnormalities otherwise known as thyroid dysgenesis (TD). We performed whole exome sequencing (WES) in a consanguineous family with TD and subsequently sequenced a cohort of 134 probands with TD to identify genetic factors predisposing to the disease. We identified the novel missense mutations p.S148F, p.R114Q and p.L177W in the BOREALIN gene in TD-affected families. Borealin is a major component of the Chromosomal Passenger Complex (CPC) with well-known functions in mitosis. Further analysis of the missense mutations showed no apparent effects on mitosis. In contrast, expression of the mutants in human thyrocytes resulted in defects in adhesion and migration with corresponding changes in gene expression suggesting others functions for this mitotic protein. These results were well correlated with the same gene expression pattern analysed in the thyroid tissue of the patient with BOREALIN-p.R114W. These studies open new avenues in the genetics of TD in humans.
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Affiliation(s)
- Aurore Carré
- INSERM U1016, Cochin Institute, Faculté de Médecine, Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,IMAGINE Institute affiliate, Paris, France
| | - Athanasia Stoupa
- IMAGINE Institute affiliate, Paris, France.,Pediatric Endocrinology, Gynecology and Diabetology Unit, Hôpital Universitaire Necker-Enfants Malades, AP-HP, Paris, France
| | - Dulanjalee Kariyawasam
- INSERM U1016, Cochin Institute, Faculté de Médecine, Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,Pediatric Endocrinology, Gynecology and Diabetology Unit, Hôpital Universitaire Necker-Enfants Malades, AP-HP, Paris, France
| | | | - Cyrille Ramond
- INSERM U1016, Cochin Institute, Faculté de Médecine, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Taylor Monus
- Department of Biological Sciences, University of Toledo, Toledo, Ohio, USA
| | - Juliane Léger
- Pediatric Endocrinology Unit, Hôpital Universitaire Robert Debré, AP-HP, Paris, France.,RARE Disorder Center: Centre des Maladies Endocriniennes Rares de la Croissance
| | - Sébastien Gaujoux
- Department of Digestive and Endocrine Surgery, Cochin Hospital, AP-HP, Université Paris Descartes, Paris, France
| | - Frédéric Sebag
- Department of General, Endocrine and Metabolic Surgery, Hopital de la Conception, Marseille, France
| | - Nicolas Glaser
- INSERM U1016, Cochin Institute, Faculté de Médecine, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Delphine Zenaty
- Pediatric Endocrinology Unit, Hôpital Universitaire Robert Debré, AP-HP, Paris, France.,RARE Disorder Center: Centre des Maladies Endocriniennes Rares de la Croissance
| | - Patrick Nitschke
- Bioinformatics Platform, Paris Descartes University, IMAGINE Institute, Paris, France
| | - Christine Bole-Feysot
- Genomic Platform, INSERM UMR 1163, Paris Descartes Sorbonne Paris Cite University, Imagine Institute, Paris, France
| | - Laurence Hubert
- INSERM U1163, IMAGINE Institute, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Stanislas Lyonnet
- INSERM U1163, IMAGINE Institute, Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,Department of Genetics, Hôpital Universitaire Necker-Enfants Malades, AP-HP, Paris, France
| | - Raphaël Scharfmann
- INSERM U1016, Cochin Institute, Faculté de Médecine, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Arnold Munnich
- INSERM U1163, IMAGINE Institute, Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,Department of Genetics, Hôpital Universitaire Necker-Enfants Malades, AP-HP, Paris, France
| | - Claude Besmond
- INSERM U1163, IMAGINE Institute, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - William Taylor
- Department of Biological Sciences, University of Toledo, Toledo, Ohio, USA
| | - Michel Polak
- INSERM U1016, Cochin Institute, Faculté de Médecine, Université Paris Descartes, Sorbonne Paris Cité, Paris, France.,IMAGINE Institute affiliate, Paris, France.,Pediatric Endocrinology, Gynecology and Diabetology Unit, Hôpital Universitaire Necker-Enfants Malades, AP-HP, Paris, France.,RARE Disorder Center: Centre des Maladies Endocriniennes Rares de la Croissance
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19
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FOXE1 Mutation Screening in a Case with Cleft Lip, Hypothyroidism, and Thyroid Carcinoma: A New Syndrome? Case Rep Genet 2017; 2017:6390545. [PMID: 28928994 PMCID: PMC5591984 DOI: 10.1155/2017/6390545] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 07/19/2017] [Accepted: 07/30/2017] [Indexed: 01/30/2023] Open
Abstract
A 26-year-old woman is referred to the Internal Medicine consultation due to increases in laboratory studies associated with Papillary Thyroid Carcinoma (PTC) that was confirmed by histopathological studies. Her clinical history revealed that, at 3 months of age, she was successfully treated with surgery for cleft lip (CL) and at the age of 24 years was diagnosed with hypothyroidism. Single nucleotide polymorphisms (SNPs) in FOXE1 and its promoter regions have been associated with various etiologies related to the thyroid, including orofacial clefting, specially cleft palate (CP) and CL, hypothyroidism (HT), and thyroid cancer. The association of CL, HT, and PTC might be component of a new syndrome; however FOXE1 coding region, which has been involved with these entities, has not exhibited mutations or SNPs. Further study of other genes may help in better characterization of the possible syndrome.
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20
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Abstract
Developmental anomalies of the thyroid gland, defined as thyroid dysgenesis, underlie the majority of cases of congenital hypothyroidism. Thyroid dysgenesis is predominantly a sporadic disorder although a reported familial enrichment, variation of incidence by ethnicity and the monogenic defects associated mainly with athyreosis or orthotopic thyroid hypoplasia, suggest a genetic contribution. Of note, the most common developmental anomaly, thyroid ectopy, remains unexplained. Ectopy may result from multiple genetic or epigenetic variants in the germline and/or at the somatic level. This review provides a brief overview of the monogenic defects in candidate genes that have been identified so far and of the syndromes which are known to be associated with thyroid dysgenesis.
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Affiliation(s)
- Rasha Abu-Khudir
- Endocrinology Service and Research Center, Sainte-Justine Hospital and Department of Pediatrics, University of Montreal, Montreal, H3T 1C5, Quebec, Canada; Chemistry Department, Biochemistry Division, Faculty of Science, Tanta University, Tanta, 31527, Egypt.
| | - Stéphanie Larrivée-Vanier
- Endocrinology Service and Research Center, Sainte-Justine Hospital and Department of Pediatrics, University of Montreal, Montreal, H3T 1C5, Quebec, Canada.
| | - Jonathan D Wasserman
- Division of Endocrinology, The Hospital for Sick Children, Toronto, Ontario, M5G 1X8, Canada.
| | - Johnny Deladoëy
- Endocrinology Service and Research Center, Sainte-Justine Hospital and Department of Pediatrics, University of Montreal, Montreal, H3T 1C5, Quebec, Canada.
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21
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Abstract
Thyroid hormones (TH) are endocrine messengers essential for normal development and function of virtually every vertebrate. The hypothalamic-pituitary-thyroid axis is exquisitely modulated to maintain nearly constant TH (T4 and T3) levels in circulation. However peripheral tissues and the CNS control the intracellular availability of TH, suggesting that circulating concentrations of TH are not fully representative of what each cell type sees. Indeed, recent work in the field has identified that TH transporters, deiodinases and thyroid hormone receptor coregulators can strongly control tissue-specific sensitivity to a set amount of TH. Furthermore, the mechanism by which the thyroid hormone receptors regulate target gene expression can vary by gene, tissue and cellular context. This review will highlight novel insights into the machinery that controls the cellular response to TH, which include unique signaling cascades. These findings shed new light into the pathophysiology of human diseases caused by abnormal TH signaling.
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Affiliation(s)
- Arturo Mendoza
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - Anthony N Hollenberg
- Division of Endocrinology, Diabetes and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA.
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22
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Abstract
Thyroid dysgenesis (TD) is the most common cause of congenital hypothyroidism in iodine-sufficient regions and includes a spectrum of developmental anomalies. The genetic components of TD are complex. Although a sporadic disease, advances in developmental biology have revealed monogenetic forms of TD. Inheritance is not based on a simple Mendelian pattern and additional genetic elements might contribute to the phenotypic spectrum. This article summarizes the key steps of normal thyroid development and provides an update on responsible genes and underlying mechanisms of TD. Up-to-date technologies in genetics and biology will allow us to advance in our knowledge of TD.
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Affiliation(s)
- Athanasia Stoupa
- Pediatric Endocrinology, Diabetology and Gynecology Department, Necker Enfants-Malades University Hospital, Assistance Publique Hôpitaux de Paris, 149 rue de Sèvres, 75015, Paris, France; Imagine Institute, Inserm U1163, 24 boulevard du Montparnasse, 75015, Paris, France
| | - Dulanjalee Kariyawasam
- Pediatric Endocrinology, Diabetology and Gynecology Department, Necker Enfants-Malades University Hospital, Assistance Publique Hôpitaux de Paris, 149 rue de Sèvres, 75015, Paris, France; Imagine Institute, Inserm U1163, 24 boulevard du Montparnasse, 75015, Paris, France; Cochin Institute, Inserm U1016, 22 rue Mechain, 75014, Paris, France
| | - Aurore Carré
- Imagine Institute, Inserm U1163, 24 boulevard du Montparnasse, 75015, Paris, France; Cochin Institute, Inserm U1016, 22 rue Mechain, 75014, Paris, France
| | - Michel Polak
- Pediatric Endocrinology, Diabetology and Gynecology Department, Necker Enfants-Malades University Hospital, Assistance Publique Hôpitaux de Paris, 149 rue de Sèvres, 75015, Paris, France; Imagine Institute, Inserm U1163, 24 boulevard du Montparnasse, 75015, Paris, France; Cochin Institute, Inserm U1016, 22 rue Mechain, 75014, Paris, France; Paris Descartes University, Sorbonne Paris Cité, 12 rue de l'École de Médecine, 75006, Paris, France.
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23
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Lidral AC, Liu H, Bullard SA, Bonde G, Machida J, Visel A, Uribe LMM, Li X, Amendt B, Cornell RA. A single nucleotide polymorphism associated with isolated cleft lip and palate, thyroid cancer and hypothyroidism alters the activity of an oral epithelium and thyroid enhancer near FOXE1. Hum Mol Genet 2015; 24:3895-907. [PMID: 25652407 PMCID: PMC4476440 DOI: 10.1093/hmg/ddv047] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Accepted: 02/02/2015] [Indexed: 12/11/2022] Open
Abstract
Three common diseases, isolated cleft lip and cleft palate (CLP), hypothyroidism and thyroid cancer all map to the FOXE1 locus, but causative variants have yet to be identified. In patients with CLP, the frequency of coding mutations in FOXE1 fails to account for the risk attributable to this locus, suggesting that the common risk alleles reside in nearby regulatory elements. Using a combination of zebrafish and mouse transgenesis, we screened 15 conserved non-coding sequences for enhancer activity, identifying three that regulate expression in a tissue specific pattern consistent with endogenous foxe1 expression. These three, located -82.4, -67.7 and +22.6 kb from the FOXE1 start codon, are all active in the oral epithelium or branchial arches. The -67.7 and +22.6 kb elements are also active in the developing heart, and the -67.7 kb element uniquely directs expression in the developing thyroid. Within the -67.7 kb element is the SNP rs7850258 that is associated with all three diseases. Quantitative reporter assays in oral epithelial and thyroid cell lines show that the rs7850258 allele (G) associated with CLP and hypothyroidism has significantly greater enhancer activity than the allele associated with thyroid cancer (A). Moreover, consistent with predicted transcription factor binding differences, the -67.7 kb element containing rs7850258 allele G is significantly more responsive to both MYC and ARNT than allele A. By demonstrating that this common non-coding variant alters FOXE1 expression, we have identified at least in part the functional basis for the genetic risk of these seemingly disparate disorders.
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Affiliation(s)
| | - Huan Liu
- Dows Research Institute, State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory for Oral Biomedicine of Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | | | - Greg Bonde
- Department of Anatomy, University of Iowa, Iowa City, IA, USA
| | - Junichiro Machida
- Department of Oral and Maxillofacial Surgery, Toyota Memorial Hospital, Toyota City, Aichi, Japan
| | - Axel Visel
- Genomics Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA and Department of Energy Joint Genome Institute, Walnut Creek, CA, USA
| | | | - Xiao Li
- Department of Anatomy, University of Iowa, Iowa City, IA, USA
| | - Brad Amendt
- Department of Anatomy, University of Iowa, Iowa City, IA, USA
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24
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Kariyawasam D, Rachdi L, Carré A, Martin M, Houlier M, Janel N, Delabar JM, Scharfmann R, Polak M. DYRK1A BAC transgenic mouse: a new model of thyroid dysgenesis in Down syndrome. Endocrinology 2015; 156:1171-80. [PMID: 25490145 DOI: 10.1210/en.2014-1329] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The most common thyroid abnormality among Down syndrome (DS) children corresponds to a mildly elevated TSH, with T4 decreased or in the normal range and thyroid hypoplasia, from the neonatal period onward, which aggravate their mental impairment. Transgenic Dyrk1A mice, obtained by bacterial artificial chromosome engineering (mBACTgDyrk1A), have 3 copies of the Dyrk1A gene. The objective is to determine whether this transgenic Dyrk1A (Dyrk1A(+/++)) mouse is an adequate murine model for the study of thyroid dysgenesis in DS. Embryonic thyroid development from embryonic day 13.5 (E13.5) to E17.5 was analyzed in wild-type (WT) and Dyrk1A(+/++) mice by immunofluorescence with anti-Nkx2-1, anti-thyroglobulin, and anti-T4 antibodies, markers of early thyroid development, hormonogenesis, and final differentiation, respectively. The expression of transcription factors Nkx2-1, Pax8, and Foxe1 involved in thyroidogenesis were studied by quantitative RT-PCR at the same embryonic stages. We then compared the adult phenotype at 8 to 12 weeks in Dyrk1A(+/++) and WT mice for T4 and TSH levels, thyroidal weight, and histological analysis. Regarding thyroidal development, at E15.5, Dyrk1A(+/++) thyroid lobes are double the size of WT thyroids (P = .01), but the thyroglobulin stained surface in Dyrk1A(+/++) thyroids is less than a third as large at E17.5 (P = .04) and their differentiated follicular surface half the size (P = .004). We also observed a significant increase in Nkx2-1, Foxe1, and Pax8 RNA levels in E13.5 and E17.5 Dyrk1A(+/++) embryonic thyroids. Dyrk1A(+/++) young adult mice have significantly lower plasma T4 (2.4 ng/mL versus WT, 3.7 ng/mL; P = 0.019) and nonsignificantly higher plasma TSH (114 mUI/L versus WT, 73mUI/L; P = .09). In addition, their thyroids are significantly heavier (P = .04) and exhibit large disorganized regions. Dyrk1A overexpression directly leads to thyroidal embryogenetic, functional and morphological impairment. The young adult thyroid phenotype is probably a result of embryogenetic impairment. The Dyrk1A(+/++) mouse can be considered a suitable study model for thyroid dysgenesis in DS.
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Affiliation(s)
- Dulanjalee Kariyawasam
- Inserm U1016 (D.K., L.R., A.C., M.H., R.S., M.P.), 75014 Paris France; Imagine Institute (D.K., A.C., M.P.), Paris, France; Pediatric Endocrinology, Gynaecology and Diabetology Unit (D.K., M.P.), Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, 75015 Paris, France; Diabetes and Obesity Research Laboratory (M.M.), Institut d'Investigacions Biomèdiques August Pi I Sunyer, 08036 Barcelona, Spain; Unité de Biologie Fonctionnelle et Adaptative (N.J., J.-M.D.), Centre National de Recherche Scientifique 4413, Université Paris Diderot, Sorbonne Paris Cité, 75013 Paris, France; and Université Paris Descartes-Sorbonne Paris Cité (M.P.), 75006 Paris, France
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25
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Fernández LP, López-Márquez A, Santisteban P. Thyroid transcription factors in development, differentiation and disease. Nat Rev Endocrinol 2015; 11:29-42. [PMID: 25350068 DOI: 10.1038/nrendo.2014.186] [Citation(s) in RCA: 165] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Identification of the thyroid transcription factors (TTFs), NKX2-1, FOXE1, PAX8 and HHEX, has considerably advanced our understanding of thyroid development, congenital thyroid disorders and thyroid cancer. The TTFs are fundamental to proper formation of the thyroid gland and for maintaining the functional differentiated state of the adult thyroid; however, they are not individually required for precursor cell commitment to a thyroid fate. Although knowledge of the mechanisms involved in thyroid development has increased, the full complement of genes involved in thyroid gland specification and the signals that trigger expression of the genes that encode the TTFs remain unknown. The mechanisms involved in thyroid organogenesis and differentiation have provided clues to identifying the genes that are involved in human congenital thyroid disorders and thyroid cancer. Mutations in the genes that encode the TTFs, as well as polymorphisms and epigenetic modifications, have been associated with thyroid pathologies. Here, we summarize the roles of the TTFs in thyroid development and the mechanisms by which they regulate expression of the genes involved in thyroid differentiation. We also address the implications of mutations in TTFs in thyroid diseases and in diseases not related to the thyroid gland.
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Affiliation(s)
- Lara P Fernández
- Instituto de Investigaciones Biomédicas "Alberto Sols", Consejo Superior de Investigaciones Científicas, and Universidad Autónoma de Madrid, Arturo Duperier 4, Madrid 28029, Spain
| | - Arístides López-Márquez
- Instituto de Investigaciones Biomédicas "Alberto Sols", Consejo Superior de Investigaciones Científicas, and Universidad Autónoma de Madrid, Arturo Duperier 4, Madrid 28029, Spain
| | - Pilar Santisteban
- Instituto de Investigaciones Biomédicas "Alberto Sols", Consejo Superior de Investigaciones Científicas, and Universidad Autónoma de Madrid, Arturo Duperier 4, Madrid 28029, Spain
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