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Giovannetti A, Guarnieri R, Petrizzelli F, Lazzari S, Padalino G, Traversa A, Napoli A, Di Giorgio R, Pizzuti A, Parisi C, Mazza T, Barbato E, Caputo V. Small RNAs and tooth development: The role of microRNAs in tooth agenesis and impaction. J Dent Sci 2024; 19:2150-2156. [PMID: 39347023 PMCID: PMC11437305 DOI: 10.1016/j.jds.2024.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 03/11/2024] [Indexed: 10/01/2024] Open
Abstract
Background/purpose Tooth development, or odontogenesis, is a complex process in which several molecular pathways play a key role. Recently, microRNAs, a class of approximately 20-nucleotide small RNA molecules that regulate gene expression, have been implicated in the odontogenesis process. This study aimed to assess the role of miRNAs in odontogenesis anomalies, specifically agenesis and impaction. Materials and methods We analyzed a manually curated list of 82 miRNAs associated with human odontogenesis, sourced from literature data. Employing two different approaches to validate findings, we conducted functional enrichment analysis to evaluate the cell pathways, diseases, and phenotypes enriched for those miRNAs. Results Our findings indicate that the analyzed miRNAs regulate pathways linked to tooth anomalies, including the TGFꞵ and Wnt signaling pathways, and those governing the pluripotency of stem cells, known to mediate various cellular processes, and interconnected with odontogenesis-related pathways. Furthermore, the analysis disclosed several pathways associated with tumors, including small cell lung and gastric cancer. These results were confirmed also by diseases and phenotypes enrichment evaluation. Moreover, cell network analysis disclosed that miRNAs are embedded and interconnected in networks associated with dental diseases and cancer development, thus confirming the functional enrichment analyses. Conclusion In summary, our results offer a quantitative measure of the potential involvement of miRNAs in regulating pathways crucial for developmental processes, notably odontogenesis, and provide results suggesting potential association with oncogenesis processes as well.
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Affiliation(s)
- Agnese Giovannetti
- Clinical Genomics Laboratory, Fondazione IRCCS Casa Sollievo della Sofferenza, S. Giovanni Rotondo (FG), Italy
| | - Rosanna Guarnieri
- Department of Oral and Maxillofacial Sciences, School of Dentistry, Sapienza University of Rome, Rome, Italy
| | - Francesco Petrizzelli
- Bioinformatics Laboratory, Fondazione IRCCS Casa Sollievo della Sofferenza, S. Giovanni Rotondo (FG), Italy
| | - Sara Lazzari
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Gabriella Padalino
- Department of Oral and Maxillofacial Sciences, School of Dentistry, Sapienza University of Rome, Rome, Italy
| | - Alice Traversa
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
- Dipartimento di Scienze della Vita, della Salute e delle Professioni Sanitarie, Università degli Studi "Link Campus University", Roma, Italy
| | - Alessandro Napoli
- Bioinformatics Laboratory, Fondazione IRCCS Casa Sollievo della Sofferenza, S. Giovanni Rotondo (FG), Italy
| | | | - Antonio Pizzuti
- Clinical Genomics Laboratory, Fondazione IRCCS Casa Sollievo della Sofferenza, S. Giovanni Rotondo (FG), Italy
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Chiara Parisi
- Institute of Biochemistry and Cell Biology, CNR-National Research Council, Monterotondo Scalo, Rome, Italy
| | - Tommaso Mazza
- Bioinformatics Laboratory, Fondazione IRCCS Casa Sollievo della Sofferenza, S. Giovanni Rotondo (FG), Italy
| | - Ersilia Barbato
- Department of Oral and Maxillofacial Sciences, School of Dentistry, Sapienza University of Rome, Rome, Italy
| | - Viviana Caputo
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
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2
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Boonsawat P, Asadollahi R, Niedrist D, Steindl K, Begemann A, Joset P, Bhoj EJ, Li D, Zackai E, Vetro A, Barba C, Guerrini R, Whalen S, Keren B, Khan A, Jing D, Palomares Bralo M, Rikeros Orozco E, Hao Q, Schlott Kristiansen B, Zheng B, Donnelly D, Clowes V, Zweier M, Papik M, Siegel G, Sabatino V, Mocera M, Horn AHC, Sticht H, Rauch A. Deleterious ZNRF3 germline variants cause neurodevelopmental disorders with mirror brain phenotypes via domain-specific effects on Wnt/β-catenin signaling. Am J Hum Genet 2024; 111:1994-2011. [PMID: 39168120 PMCID: PMC11393693 DOI: 10.1016/j.ajhg.2024.07.016] [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: 04/29/2024] [Revised: 07/24/2024] [Accepted: 07/24/2024] [Indexed: 08/23/2024] Open
Abstract
Zinc and RING finger 3 (ZNRF3) is a negative-feedback regulator of Wnt/β-catenin signaling, which plays an important role in human brain development. Although somatically frequently mutated in cancer, germline variants in ZNRF3 have not been established as causative for neurodevelopmental disorders (NDDs). We identified 12 individuals with ZNRF3 variants and various phenotypes via GeneMatcher/Decipher and evaluated genotype-phenotype correlation. We performed structural modeling and representative deleterious and control variants were assessed using in vitro transcriptional reporter assays with and without Wnt-ligand Wnt3a and/or Wnt-potentiator R-spondin (RSPO). Eight individuals harbored de novo missense variants and presented with NDD. We found missense variants associated with macrocephalic NDD to cluster in the RING ligase domain. Structural modeling predicted disruption of the ubiquitin ligase function likely compromising Wnt receptor turnover. Accordingly, the functional assays showed enhanced Wnt/β-catenin signaling for these variants in a dominant negative manner. Contrarily, an individual with microcephalic NDD harbored a missense variant in the RSPO-binding domain predicted to disrupt binding affinity to RSPO and showed attenuated Wnt/β-catenin signaling in the same assays. Additionally, four individuals harbored de novo truncating or de novo or inherited large in-frame deletion variants with non-NDD phenotypes, including heart, adrenal, or nephrotic problems. In contrast to NDD-associated missense variants, the effects on Wnt/β-catenin signaling were comparable between the truncating variant and the empty vector and between benign variants and the wild type. In summary, we provide evidence for mirror brain size phenotypes caused by distinct pathomechanisms in Wnt/β-catenin signaling through protein domain-specific deleterious ZNRF3 germline missense variants.
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Affiliation(s)
| | - Reza Asadollahi
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland; Faculty of Engineering and Science, University of Greenwich London, Medway Campus, Chatham Maritime ME4 4TB, UK
| | - Dunja Niedrist
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Katharina Steindl
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Anaïs Begemann
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Pascal Joset
- Medical Genetics, University Hospital Basel, Basel, Switzerland
| | - Elizabeth J Bhoj
- Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Dong Li
- Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Elaine Zackai
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Annalisa Vetro
- Neuroscience Department, Meyer Children's Hospital IRCCS, Florence, Italy
| | - Carmen Barba
- Neuroscience Department, Meyer Children's Hospital IRCCS, Florence, Italy; University of Florence, Florence, Italy
| | - Renzo Guerrini
- Neuroscience Department, Meyer Children's Hospital IRCCS, Florence, Italy
| | - Sandra Whalen
- Unité Fonctionnelle de Génétique Odellin, Hôpital Armand Trousseau, Paris, France
| | - Boris Keren
- Département de Génétique, Hôpital de la Pitié-Salpêtrière, Paris, France
| | - Amjad Khan
- Faculty of Science, Department of Biological Science (Zoology), University of Lakki Marwat, Khyber Pakhtunkhwa 28420, Pakistan
| | - Duan Jing
- Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - María Palomares Bralo
- Instituto de Genética Médica y Molecular (INGEMM), Unidad de Trastornos Del Neurodesarrollo, Hospital Universitario La Paz, Madrid, Spain
| | - Emi Rikeros Orozco
- Instituto de Genética Médica y Molecular (INGEMM), Unidad de Trastornos Del Neurodesarrollo, Hospital Universitario La Paz, Madrid, Spain
| | - Qin Hao
- Department of Clinical Genetics, Odense University Hospital, Odense, Denmark
| | | | - Bixia Zheng
- Nanjing Key Laboratory of Pediatrics Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Deirdre Donnelly
- Northern Ireland Regional Genetics Centre, Belfast Health & Social Care Trust, Belfast, Northern Ireland
| | - Virginia Clowes
- Thames Regional Genetics Service, North West University Healthcare NHS Trust, London, UK
| | - Markus Zweier
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Michael Papik
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Gabriele Siegel
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Valeria Sabatino
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Martina Mocera
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland
| | - Anselm H C Horn
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland; Institute of Biochemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Heinrich Sticht
- Institute of Biochemistry, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Anita Rauch
- Institute of Medical Genetics, University of Zurich, Zurich, Switzerland; Pediatric University Hospital Zurich, Zurich, Switzerland.
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3
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Aschenbrenner D, Nassiri I, Venkateswaran S, Pandey S, Page M, Drowley L, Armstrong M, Kugathasan S, Fairfax B, Uhlig HH. An isoform quantitative trait locus in SBNO2 links genetic susceptibility to Crohn's disease with defective antimicrobial activity. Nat Commun 2024; 15:4529. [PMID: 38806456 PMCID: PMC11133462 DOI: 10.1038/s41467-024-47218-3] [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: 05/05/2023] [Accepted: 03/25/2024] [Indexed: 05/30/2024] Open
Abstract
Despite major advances in linking single genetic variants to single causal genes, the significance of genetic variation on transcript-level regulation of expression, transcript-specific functions, and relevance to human disease has been poorly investigated. Strawberry notch homolog 2 (SBNO2) is a candidate gene in a susceptibility locus with different variants associated with Crohn's disease and bone mineral density. The SBNO2 locus is also differentially methylated in Crohn's disease but the functional mechanisms are unknown. Here we show that the isoforms of SBNO2 are differentially regulated by lipopolysaccharide and IL-10. We identify Crohn's disease associated isoform quantitative trait loci that negatively regulate the expression of the noncanonical isoform 2 corresponding with the methylation signals at the isoform 2 promoter in IBD and CD. The two isoforms of SBNO2 drive differential gene networks with isoform 2 dominantly impacting antimicrobial activity in macrophages. Our data highlight the role of isoform quantitative trait loci to understand disease susceptibility and resolve underlying mechanisms of disease.
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Affiliation(s)
- Dominik Aschenbrenner
- Translational Gastroenterology Unit, University of Oxford, Oxford, UK.
- Immunology Disease Area, Novartis Biomedical Research, Basel, CH, Switzerland.
| | - Isar Nassiri
- Oxford-GSK Institute of Molecular and Computational Medicine (IMCM), Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford, UK
- Department of Psychiatry, University of Oxford, Oxford, UK
| | | | - Sumeet Pandey
- Translational Gastroenterology Unit, University of Oxford, Oxford, UK
- GSK Immunology Network, GSK Medicines Research Center, Stevenage, UK
| | - Matthew Page
- Translational Bioinformatics, UCB Pharma, Slough, UK
| | | | | | | | - Benjamin Fairfax
- MRC-Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
- Department of Oncology, University of Oxford & Oxford Cancer Centre, Churchill Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
- NIHR Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Holm H Uhlig
- Translational Gastroenterology Unit, University of Oxford, Oxford, UK.
- NIHR Oxford Biomedical Research Centre, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.
- Department of Paediatrics, University of Oxford, Oxford, UK.
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4
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Yang X, Song Y, Zhang R, Yu M, Guo X, Guo H, Du X, Sun S, Li C, Mao X, Fan G, Liu X. Unravelling the genomic features, phylogeny and genetic basis of tooth ontogenesis in Characiformes through analysis of four genomes. DNA Res 2023; 30:dsad022. [PMID: 37788574 PMCID: PMC10590162 DOI: 10.1093/dnares/dsad022] [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: 03/25/2023] [Revised: 09/27/2023] [Accepted: 10/02/2023] [Indexed: 10/05/2023] Open
Abstract
Characiformes is a diverse and evolutionarily significant order of freshwater fish encompassing over 2,300 species. Despite its diversity, our understanding of Characiformes' evolutionary relationships and adaptive mechanisms is limited due to insufficient genome sequences. In this study, we sequenced and assembled the genomes of four Characiformes species, three of which were chromosome-level assemblies. Our analyses revealed dynamic changes in gene family evolution, repeat sequences and variations in chromosomal collinearity within these genomes. With the assembled genomes, we were not only able to elucidate the evolutionary relationship of the four main orders in Otophysi but also indicated Characiformes as the paraphyletic group. Comparative genomic analysis with other available fish genomes shed light on the evolution of genes related to tooth development in Characiformes. Notably, variations in the copy number of secretory calcium-binding phosphoproteins (SCPP) genes were observed among different orders of Otophysi, indicating their potential contribution to the diversity of tooth types. Our study offers invaluable genome sequences and novel insights into Characiformes' evolution, paving the way for further genomic and evolutionary research in fish.
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Affiliation(s)
- Xianwei Yang
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yue Song
- BGI Research, Qingdao 266555, China
| | | | | | | | | | - Xiao Du
- BGI Research, Qingdao 266555, China
- BGI Research, Shenzhen 518083, China
| | - Shuai Sun
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- BGI Research, Qingdao 266555, China
| | | | | | - Guangyi Fan
- BGI Research, Qingdao 266555, China
- BGI Research, Shenzhen 518083, China
| | - Xin Liu
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- BGI Research, Shenzhen 518083, China
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5
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Genetic/Protein Association of Atopic Dermatitis and Tooth Agenesis. Int J Mol Sci 2023; 24:ijms24065754. [PMID: 36982827 PMCID: PMC10055628 DOI: 10.3390/ijms24065754] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 03/07/2023] [Accepted: 03/15/2023] [Indexed: 03/19/2023] Open
Abstract
Atopic dermatitis and abnormalities in tooth development (including hypomineralization, hypodontia and microdontia) have been observed to co-occur in some patients. A common pathogenesis pathway that involves genes and protein interactions has been hypothesized. This review aims to first provide a description of the key gene mutations and signaling pathways associated with atopic dermatitis and tooth agenesis (i.e., the absence of teeth due to developmental failure) and identify the possible association between the two diseases. Second, utilizing a list of genes most commonly associated with the two diseases, we conducted a protein–protein network interaction analysis using the STRING database and identified a novel association between the Wnt/β-catenin signaling pathway (major pathway responsible for TA) and desmosomal proteins (component of skin barrier that affect the pathogenesis of AD). Further investigation into the mechanisms that may drive their co-occurrence and underlie the development of the two diseases is warranted.
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6
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Lee Y, Chae W, Kim YJ, Kim JW. Novel LRP6 Mutations Causing Non-Syndromic Oligodontia. J Pers Med 2022; 12:jpm12091401. [PMID: 36143186 PMCID: PMC9504909 DOI: 10.3390/jpm12091401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 08/26/2022] [Accepted: 08/26/2022] [Indexed: 11/26/2022] Open
Abstract
The process of tooth formation is a series of reciprocal interactions between the ectoderm and mesoderm, and it is believed that many genetic factors are involved in this complex process. More than a dozen genes have been identified in non-syndromic tooth agenesis; however, the genetic etiology underlying tooth agenesis is not fully understood yet. In this study, we identified two novel LRP6 mutations in two non-syndromic oligodontia families. Both probands had 16 and 17 missing teeth in their permanent dentition. Mutational analysis identified a de novo frameshift mutation by a 1-bp insertion in exon 9 (NM_002336.2: c.1870dupA, p.(Met624Asnfs*29)) and a splicing donor site mutation in intron 8 (c.1762+2T>C). An in vitro splicing assay confirmed the deletion of exon 8, and the deletion would result in a frameshift. Due to the premature termination codons introduced by the frameshift, both mutant transcripts would be degraded by nonsense-mediated mRNA decay, resulting in haploinsufficiency.
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Affiliation(s)
- Yejin Lee
- Department of Pediatric Dentistry & DRI, School of Dentistry, Seoul National University, Seoul 03080, Korea
| | - Wonseon Chae
- Department of Pediatric Dentistry & DRI, School of Dentistry, Seoul National University, Seoul 03080, Korea
| | - Youn Jung Kim
- Department of Pediatric Dentistry & DRI, School of Dentistry, Seoul National University, Seoul 03080, Korea
| | - Jung-Wook Kim
- Department of Pediatric Dentistry & DRI, School of Dentistry, Seoul National University, Seoul 03080, Korea
- Department of Molecular Genetics & DRI, School of Dentistry, Seoul National University, Seoul 03080, Korea
- Correspondence:
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7
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Abstract
The development and repair of dentin are strictly regulated by hundreds of genes. Abnormal dentin development is directly caused by gene mutations and dysregulation. Understanding and mastering this signal network is of great significance to the study of tooth development, tissue regeneration, aging, and repair and the treatment of dental diseases. It is necessary to understand the formation and repair mechanism of dentin in order to better treat the dentin lesions caused by various abnormal properties, whether it is to explore the reasons for the formation of dentin defects or to develop clinical drugs to strengthen the method of repairing dentin. Molecular biology of genes related to dentin development and repair are the most important basis for future research.
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Affiliation(s)
- Shuang Chen
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Shanghai Stomatological Hospital, Fudan University, Shanghai, P. R. China.,Department of Prosthodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, P. R. China
| | - Han Xie
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - Shouliang Zhao
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - Shuai Wang
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Shanghai Stomatological Hospital, Fudan University, Shanghai, P. R. China
| | - Xiaoling Wei
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Shanghai Stomatological Hospital, Fudan University, Shanghai, P. R. China.,Department of Endodontics, Shanghai Stomatological Hospital, Fudan University, Shanghai, P. R. China
| | - Shangfeng Liu
- Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases, Shanghai Stomatological Hospital, Fudan University, Shanghai, P. R. China
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8
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Martínez-Gil N, Ugartondo N, Grinberg D, Balcells S. Wnt Pathway Extracellular Components and Their Essential Roles in Bone Homeostasis. Genes (Basel) 2022; 13:genes13010138. [PMID: 35052478 PMCID: PMC8775112 DOI: 10.3390/genes13010138] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/10/2022] [Accepted: 01/11/2022] [Indexed: 12/11/2022] Open
Abstract
The Wnt pathway is involved in several processes essential for bone development and homeostasis. For proper functioning, the Wnt pathway is tightly regulated by numerous extracellular elements that act by both activating and inhibiting the pathway at different moments. This review aims to describe, summarize and update the findings regarding the extracellular modulators of the Wnt pathway, including co-receptors, ligands and inhibitors, in relation to bone homeostasis, with an emphasis on the animal models generated, the diseases associated with each gene and the bone processes in which each member is involved. The precise knowledge of all these elements will help us to identify possible targets that can be used as a therapeutic target for the treatment of bone diseases such as osteoporosis.
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9
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Chu KY, Wang YL, Chou YR, Chen JT, Wang YP, Simmer JP, Hu JCC, Wang SK. Synergistic Mutations of LRP6 and WNT10A in Familial Tooth Agenesis. J Pers Med 2021; 11:jpm11111217. [PMID: 34834569 PMCID: PMC8621929 DOI: 10.3390/jpm11111217] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 11/13/2021] [Accepted: 11/13/2021] [Indexed: 02/07/2023] Open
Abstract
Familial tooth agenesis (FTA), distinguished by developmental failure of selected teeth, is one of the most prevalent craniofacial anomalies in humans. Mutations in genes involved in WNT/β-catenin signaling, including AXIN2 WNT10A, WNT10B, LRP6, and KREMEN1, are known to cause FTA. However, mutational interactions among these genes have not been fully explored. In this study, we characterized four FTA kindreds with LRP6 pathogenic mutations: p.(Gln1252*), p.(Met168Arg), p.(Ala754Pro), and p.(Asn1075Ser). The three missense mutations were predicted to cause structural destabilization of the LRP6 protein. Two probands carrying both an LRP6 mutant allele and a WNT10A variant exhibited more severe phenotypes, suggesting mutational synergism or digenic inheritance. Biallelic LRP6 mutations in a patient with many missing teeth further supported the dose-dependence of LRP6-associated FTA. Analysis of 21 FTA cases with 15 different LRP6 loss-of-function mutations revealed high heterogeneity of disease severity and a distinctive pattern of missing teeth, with maxillary canines being frequently affected. We hypothesized that various combinations of sequence variants in WNT-related genes can modulate WNT signaling activities during tooth development and cause a wide spectrum of tooth agenesis severity, which highlights the importance of exome/genome analysis for the genetic diagnosis of FTA in this era of precision medicine.
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Affiliation(s)
- Kuan-Yu Chu
- Department of Dentistry, School of Dentistry, National Taiwan University, Taipei City 100, Taiwan; (K.-Y.C.); (Y.-L.W.); (J.-T.C.); (Y.-P.W.)
- Department of Pediatric Dentistry, National Taiwan University Children’s Hospital, Taipei City 100, Taiwan
| | - Yin-Lin Wang
- Department of Dentistry, School of Dentistry, National Taiwan University, Taipei City 100, Taiwan; (K.-Y.C.); (Y.-L.W.); (J.-T.C.); (Y.-P.W.)
- Department of Pediatric Dentistry, National Taiwan University Children’s Hospital, Taipei City 100, Taiwan
| | - Yu-Ren Chou
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei City 106, Taiwan;
| | - Jung-Tsu Chen
- Department of Dentistry, School of Dentistry, National Taiwan University, Taipei City 100, Taiwan; (K.-Y.C.); (Y.-L.W.); (J.-T.C.); (Y.-P.W.)
| | - Yi-Ping Wang
- Department of Dentistry, School of Dentistry, National Taiwan University, Taipei City 100, Taiwan; (K.-Y.C.); (Y.-L.W.); (J.-T.C.); (Y.-P.W.)
| | - James P. Simmer
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, Ann Arbor, MI 48108, USA; (J.P.S.); (J.C.-C.H.)
| | - Jan C.-C. Hu
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, Ann Arbor, MI 48108, USA; (J.P.S.); (J.C.-C.H.)
| | - Shih-Kai Wang
- Department of Dentistry, School of Dentistry, National Taiwan University, Taipei City 100, Taiwan; (K.-Y.C.); (Y.-L.W.); (J.-T.C.); (Y.-P.W.)
- Department of Pediatric Dentistry, National Taiwan University Children’s Hospital, Taipei City 100, Taiwan
- Correspondence: ; Tel.: +886-2-23123456 (ext. 70251)
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10
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Hermans F, Hemeryck L, Lambrichts I, Bronckaers A, Vankelecom H. Intertwined Signaling Pathways Governing Tooth Development: A Give-and-Take Between Canonical Wnt and Shh. Front Cell Dev Biol 2021; 9:758203. [PMID: 34778267 PMCID: PMC8586510 DOI: 10.3389/fcell.2021.758203] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 10/11/2021] [Indexed: 11/13/2022] Open
Abstract
Teeth play essential roles in life. Their development relies on reciprocal interactions between the ectoderm-derived dental epithelium and the underlying neural crest-originated mesenchyme. This odontogenic process serves as a prototype model for the development of ectodermal appendages. In the mouse, developing teeth go through distinct morphological phases that are tightly controlled by epithelial signaling centers. Crucial molecular regulators of odontogenesis include the evolutionarily conserved Wnt, BMP, FGF and sonic hedgehog (Shh) pathways. These signaling modules do not act on their own, but are closely intertwined during tooth development, thereby outlining the path to be taken by specific cell populations including the resident dental stem cells. Recently, pivotal Wnt-Shh interaction and feedback loops have been uncovered during odontogenesis, showing conservation in other developing ectodermal appendages. This review provides an integrated overview of the interplay between canonical Wnt and Shh throughout mouse tooth formation stages, extending from the initiation of dental placode to the fully formed adult tooth.
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Affiliation(s)
- Florian Hermans
- Laboratory of Tissue Plasticity in Health and Disease, Cluster of Stem Cell and Developmental Biology, Department of Development and Regeneration, Leuven Stem Cell Institute, KU Leuven (University of Leuven), Leuven, Belgium.,Biomedical Research Institute (BIOMED), Department of Cardio and Organ Systems, UHasselt-Hasselt University, Diepenbeek, Belgium
| | - Lara Hemeryck
- Laboratory of Tissue Plasticity in Health and Disease, Cluster of Stem Cell and Developmental Biology, Department of Development and Regeneration, Leuven Stem Cell Institute, KU Leuven (University of Leuven), Leuven, Belgium
| | - Ivo Lambrichts
- Biomedical Research Institute (BIOMED), Department of Cardio and Organ Systems, UHasselt-Hasselt University, Diepenbeek, Belgium
| | - Annelies Bronckaers
- Biomedical Research Institute (BIOMED), Department of Cardio and Organ Systems, UHasselt-Hasselt University, Diepenbeek, Belgium
| | - Hugo Vankelecom
- Laboratory of Tissue Plasticity in Health and Disease, Cluster of Stem Cell and Developmental Biology, Department of Development and Regeneration, Leuven Stem Cell Institute, KU Leuven (University of Leuven), Leuven, Belgium
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11
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Lee Y, Zhang H, Seymen F, Koruyucu M, Kasimoglu Y, Lee ZH, Hu JCC, Simmer JP, Kim JW. Novel homozygous KREMEN1 mutation causes ectodermal dysplasia. Oral Dis 2021; 28:843-845. [PMID: 34028942 DOI: 10.1111/odi.13921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 05/03/2021] [Accepted: 05/09/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Yejin Lee
- Department of Pediatric Dentistry, School of Dentistry & DRI, Seoul National University, Seoul, Korea
| | - Hong Zhang
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - Figen Seymen
- Department of Pedodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | - Mine Koruyucu
- Department of Pedodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | - Yelda Kasimoglu
- Department of Pedodontics, Faculty of Dentistry, Istanbul University, Istanbul, Turkey
| | - Zang Hee Lee
- Department of Cell and Developmental Biology, School of Dentistry & DRI, Seoul National University, Seoul, Korea
| | - Jan C-C Hu
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - James P Simmer
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - Jung-Wook Kim
- Department of Pediatric Dentistry, School of Dentistry & DRI, Seoul National University, Seoul, Korea.,Department of Molecular Genetics, School of Dentistry & DRI, Seoul National University, Seoul, Korea
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12
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Eichler EE. 2020 William Allan Award introduction: Mary-Claire King. Am J Hum Genet 2021; 108:383-385. [PMID: 33667390 DOI: 10.1016/j.ajhg.2020.12.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
This article is based on the address given by the author at the 2020 virtual meeting of the American Society of Human Genetics (ASHG) on October 26, 2020. The video of the original address can be found at the ASHG website. Photo credit: Clare McLean.
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Affiliation(s)
- Evan E Eichler
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA; Howard Hughes Medical Institute, University of Washington, Seattle, WA 98195, USA.
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13
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Li D, Tian Y, Yin C, Huai Y, Zhao Y, Su P, Wang X, Pei J, Zhang K, Yang C, Dang K, Jiang S, Miao Z, Li M, Hao Q, Zhang G, Qian A. Silencing of lncRNA AK045490 Promotes Osteoblast Differentiation and Bone Formation via β-Catenin/TCF1/Runx2 Signaling Axis. Int J Mol Sci 2019; 20:ijms20246229. [PMID: 31835596 PMCID: PMC6941011 DOI: 10.3390/ijms20246229] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 12/04/2019] [Accepted: 12/06/2019] [Indexed: 12/13/2022] Open
Abstract
Osteoporosis, a disease characterized by both loss of bone mass and structural deterioration of bone, is the most common reason for a broken bone among the elderly. It is known that the attenuated differentiation ability of osteogenic cells has been regarded as one of the greatest contributors to age-related bone formation reduction. However, the effects of current therapies are still unsatisfactory. In this study we identify a novel long noncoding RNA AK045490 which is correlated with osteogenic differentiation and enriched in skeletal tissues of mice. In vitro analysis of bone-derived mesenchymal stem cells (BMSCs) showed that AK045490 inhibited osteoblast differentiation. In vivo inhibition of AK045490 by its small interfering RNA rescued bone formation in ovariectomized osteoporosis mice model. Mechanistically, AK045490 inhibited the nuclear translocation of β-catenin and downregulated the expression of TCF1, LEF1, and Runx2. The results suggest that Lnc-AK045490 suppresses β-catenin/TCF1/Runx2 signaling and inhibits osteoblast differentiation and bone formation, providing a novel mechanism of osteogenic differentiation and a potential drug target for osteoporosis.
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Affiliation(s)
- Dijie Li
- Lab for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China; (D.L.); (Y.T.); (C.Y.); (Y.H.); (Y.Z.); (P.S.); (X.W.); (J.P.); (K.Z.); (C.Y.); (K.D.); (Z.M.)
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- Law Sau Fai Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong 999077, SAR, China
| | - Ye Tian
- Lab for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China; (D.L.); (Y.T.); (C.Y.); (Y.H.); (Y.Z.); (P.S.); (X.W.); (J.P.); (K.Z.); (C.Y.); (K.D.); (Z.M.)
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
| | - Chong Yin
- Lab for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China; (D.L.); (Y.T.); (C.Y.); (Y.H.); (Y.Z.); (P.S.); (X.W.); (J.P.); (K.Z.); (C.Y.); (K.D.); (Z.M.)
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
| | - Ying Huai
- Lab for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China; (D.L.); (Y.T.); (C.Y.); (Y.H.); (Y.Z.); (P.S.); (X.W.); (J.P.); (K.Z.); (C.Y.); (K.D.); (Z.M.)
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
| | - Yipu Zhao
- Lab for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China; (D.L.); (Y.T.); (C.Y.); (Y.H.); (Y.Z.); (P.S.); (X.W.); (J.P.); (K.Z.); (C.Y.); (K.D.); (Z.M.)
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
| | - Peihong Su
- Lab for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China; (D.L.); (Y.T.); (C.Y.); (Y.H.); (Y.Z.); (P.S.); (X.W.); (J.P.); (K.Z.); (C.Y.); (K.D.); (Z.M.)
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
| | - Xue Wang
- Lab for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China; (D.L.); (Y.T.); (C.Y.); (Y.H.); (Y.Z.); (P.S.); (X.W.); (J.P.); (K.Z.); (C.Y.); (K.D.); (Z.M.)
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
| | - Jiawei Pei
- Lab for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China; (D.L.); (Y.T.); (C.Y.); (Y.H.); (Y.Z.); (P.S.); (X.W.); (J.P.); (K.Z.); (C.Y.); (K.D.); (Z.M.)
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
| | - Kewen Zhang
- Lab for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China; (D.L.); (Y.T.); (C.Y.); (Y.H.); (Y.Z.); (P.S.); (X.W.); (J.P.); (K.Z.); (C.Y.); (K.D.); (Z.M.)
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
| | - Chaofei Yang
- Lab for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China; (D.L.); (Y.T.); (C.Y.); (Y.H.); (Y.Z.); (P.S.); (X.W.); (J.P.); (K.Z.); (C.Y.); (K.D.); (Z.M.)
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
| | - Kai Dang
- Lab for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China; (D.L.); (Y.T.); (C.Y.); (Y.H.); (Y.Z.); (P.S.); (X.W.); (J.P.); (K.Z.); (C.Y.); (K.D.); (Z.M.)
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
| | - Shanfeng Jiang
- Lab for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China; (D.L.); (Y.T.); (C.Y.); (Y.H.); (Y.Z.); (P.S.); (X.W.); (J.P.); (K.Z.); (C.Y.); (K.D.); (Z.M.)
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
| | - Zhiping Miao
- Lab for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China; (D.L.); (Y.T.); (C.Y.); (Y.H.); (Y.Z.); (P.S.); (X.W.); (J.P.); (K.Z.); (C.Y.); (K.D.); (Z.M.)
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
| | - Meng Li
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi’an 710032, China; (M.L.); (Q.H.)
| | - Qiang Hao
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi’an 710032, China; (M.L.); (Q.H.)
| | - Ge Zhang
- Law Sau Fai Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong 999077, SAR, China
- Institute of Integrated Bioinfomedicine and Translational Science, School of Chinese Medicine, Hong Kong Baptist University, Hong Kong 999077, SAR, China
- Correspondence: (G.Z.); (A.Q.); Tel.: +86-29-88491840 (G.Z. & A.Q.)
| | - Airong Qian
- Lab for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China; (D.L.); (Y.T.); (C.Y.); (Y.H.); (Y.Z.); (P.S.); (X.W.); (J.P.); (K.Z.); (C.Y.); (K.D.); (Z.M.)
- Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China
- Correspondence: (G.Z.); (A.Q.); Tel.: +86-29-88491840 (G.Z. & A.Q.)
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14
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Deleterious Variants in WNT10A, EDAR, and EDA Causing Isolated and Syndromic Tooth Agenesis: A Structural Perspective from Molecular Dynamics Simulations. Int J Mol Sci 2019; 20:ijms20215282. [PMID: 31652981 PMCID: PMC6862269 DOI: 10.3390/ijms20215282] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 10/18/2019] [Accepted: 10/20/2019] [Indexed: 02/07/2023] Open
Abstract
The dental abnormalities are the typical features of many ectodermal dysplasias along with congenital malformations of nails, skin, hair, and sweat glands. However, several reports of non-syndromic/isolated tooth agenesis have also been found in the literature. The characteristic features of hypohidrotic ectodermal dysplasia (HED) comprise of hypodontia/oligodontia, along with hypohidrosis/anhidrosis, and hypotrichosis. Pathogenic variants in EDA, EDAR, EDARADD, and TRAF6, cause the phenotypic expression of HED. Genetic alterations in EDA and WNT10A cause particularly non-syndromic/isolated oligodontia. In the current project, we recruited 57 patients of 17 genetic pedigrees (A-Q) from different geographic regions of the world, including Pakistan, Egypt, Saudi Arabia, and Syria. The molecular investigation of different syndromic and non-syndromic dental conditions, including hypodontia, oligodontia, generalized odontodysplasia, and dental crowding was carried out by using exome and Sanger sequencing. We have identified a novel missense variant (c.311G>A; p.Arg104His) in WNT10A in three oligodontia patients of family A, two novel sequence variants (c.207delinsTT, p.Gly70Trpfs*25 and c.1300T>G; p.Try434Gly) in EDAR in three patients of family B and four patients of family C, respectively. To better understand the structural and functional consequences of missense variants in WNT10A and EDAR on the stability of the proteins, we have performed extensive molecular dynamic (MD) simulations. We have also identified three previously reported pathogenic variants (c.1076T>C; p.Met359Thr), (c.1133C>T; p.Thr378Met) and (c.594_595insC; Gly201Argfs*39) in EDA in family D (four patients), E (two patients) and F (one patient), correspondingly. Presently, our data explain the genetic cause of 18 syndromic and non-syndromic tooth agenesis patients in six autosomal recessive and X-linked pedigrees (A-F), which expand the mutational spectrum of these unique clinical manifestations.
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15
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de La Dure-Molla M, Fournier BP, Manzanares MC, Acevedo AC, Hennekam RC, Friedlander L, Boy-Lefèvre ML, Kerner S, Toupenay S, Garrec P, Vi-Fane B, Felizardo R, Berteretche MV, Jordan L, Ferré F, Clauss F, Jung S, de Chalendar M, Troester S, Kawczynski M, Chaloyard J, Manière MC, Berdal A, Bloch-Zupan A. Elements of morphology: Standard terminology for the teeth and classifying genetic dental disorders. Am J Med Genet A 2019; 179:1913-1981. [PMID: 31468724 DOI: 10.1002/ajmg.a.61316] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 05/24/2019] [Accepted: 07/17/2019] [Indexed: 12/14/2022]
Abstract
Dental anomalies occur frequently in a number of genetic disorders and act as major signs in diagnosing these disorders. We present definitions of the most common dental signs and propose a classification usable as a diagnostic tool by dentists, clinical geneticists, and other health care providers. The definitions are part of the series Elements of Morphology and have been established after careful discussions within an international group of experienced dentists and geneticists. The classification system was elaborated in the French collaborative network "TÊTECOU" and the affiliated O-Rares reference/competence centers. The classification includes isolated and syndromic disorders with oral and dental anomalies, to which causative genes and main extraoral signs and symptoms are added. A systematic literature analysis yielded 408 entities of which a causal gene has been identified in 79%. We classified dental disorders in eight groups: dental agenesis, supernumerary teeth, dental size and/or shape, enamel, dentin, dental eruption, periodontal and gingival, and tumor-like anomalies. We aim the classification to act as a shared reference for clinical and epidemiological studies. We welcome critical evaluations of the definitions and classification and will regularly update the classification for newly recognized conditions.
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Affiliation(s)
- Muriel de La Dure-Molla
- Centre de Référence des Maladies rares Orales et Dentaires, Hôpital Rothschild, AP-HP, Faculté Odontologie Garancière, Université de Paris, France.,INSERM UMR_S1163 Bases moléculaires et physiopathologiques des ostéochondrodysplasies, Institut Imagine, Necker, Paris, France.,Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France
| | - Benjamin Philippe Fournier
- Centre de Référence des Maladies rares Orales et Dentaires, Hôpital Rothschild, AP-HP, Faculté Odontologie Garancière, Université de Paris, France.,Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France.,Laboratoire de Physiopathologie Orale Moléculaire INSERM UMR S1138, Centre de Recherche des Cordeliers, Universités Paris-Diderot et Paris-Descartes, Paris, France
| | - Maria Cristina Manzanares
- Unitat d'Anatomia i Embriologia Humana, Departament de Patologia i Terapèutica Experimental, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, Barcelona, Spain
| | - Ana Carolina Acevedo
- ral Care Center for Inherited Diseases, University Hospital of Brasilia, University of Brasilia, Brasilia, Brazil.,Department of Dentistry, Health Sciences School, University of Brasilia, Brasilia, Brazil
| | - Raoul C Hennekam
- Department of Pediatrics, Amsterdam UMC location AMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Lisa Friedlander
- Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France.,INSERM UMR_S1123, ECEVE, Epidémiologie clinique, évaluation économique des populations vulnérables, Paris, France
| | - Marie-Laure Boy-Lefèvre
- Centre de Référence des Maladies rares Orales et Dentaires, Hôpital Rothschild, AP-HP, Faculté Odontologie Garancière, Université de Paris, France.,Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France
| | - Stephane Kerner
- Centre de Référence des Maladies rares Orales et Dentaires, Hôpital Rothschild, AP-HP, Faculté Odontologie Garancière, Université de Paris, France.,Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France
| | - Steve Toupenay
- Centre de Référence des Maladies rares Orales et Dentaires, Hôpital Rothschild, AP-HP, Faculté Odontologie Garancière, Université de Paris, France.,Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France
| | - Pascal Garrec
- Centre de Référence des Maladies rares Orales et Dentaires, Hôpital Rothschild, AP-HP, Faculté Odontologie Garancière, Université de Paris, France.,Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France
| | - Brigite Vi-Fane
- Centre de Référence des Maladies rares Orales et Dentaires, Hôpital Rothschild, AP-HP, Faculté Odontologie Garancière, Université de Paris, France.,Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France
| | - Rufino Felizardo
- Centre de Référence des Maladies rares Orales et Dentaires, Hôpital Rothschild, AP-HP, Faculté Odontologie Garancière, Université de Paris, France.,Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France
| | - Marie-Violaine Berteretche
- Centre de Référence des Maladies rares Orales et Dentaires, Hôpital Rothschild, AP-HP, Faculté Odontologie Garancière, Université de Paris, France.,Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France
| | - Laurence Jordan
- Centre de Référence des Maladies rares Orales et Dentaires, Hôpital Rothschild, AP-HP, Faculté Odontologie Garancière, Université de Paris, France.,Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France
| | - François Ferré
- Laboratoire de Physiopathologie Orale Moléculaire INSERM UMR S1138, Centre de Recherche des Cordeliers, Universités Paris-Diderot et Paris-Descartes, Paris, France
| | - François Clauss
- Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France.,Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France.,Pôle de Médecine et Chirurgie Bucco-Dentaires, Centre de Référence des Maladies Rares Orales et Dentaires, CRMR O-Rares, ERN CRANIO, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Sophie Jung
- Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France.,Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France.,Pôle de Médecine et Chirurgie Bucco-Dentaires, Centre de Référence des Maladies Rares Orales et Dentaires, CRMR O-Rares, ERN CRANIO, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Myriam de Chalendar
- Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France
| | - Sebastien Troester
- Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France.,Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France.,Pôle de Médecine et Chirurgie Bucco-Dentaires, Centre de Référence des Maladies Rares Orales et Dentaires, CRMR O-Rares, ERN CRANIO, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Marzena Kawczynski
- Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France.,Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France.,Pôle de Médecine et Chirurgie Bucco-Dentaires, Centre de Référence des Maladies Rares Orales et Dentaires, CRMR O-Rares, ERN CRANIO, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Jessica Chaloyard
- Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France
| | | | - Marie Cécile Manière
- Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France.,Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France.,Pôle de Médecine et Chirurgie Bucco-Dentaires, Centre de Référence des Maladies Rares Orales et Dentaires, CRMR O-Rares, ERN CRANIO, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Ariane Berdal
- Centre de Référence des Maladies rares Orales et Dentaires, Hôpital Rothschild, AP-HP, Faculté Odontologie Garancière, Université de Paris, France.,Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France.,Laboratoire de Physiopathologie Orale Moléculaire INSERM UMR S1138, Centre de Recherche des Cordeliers, Universités Paris-Diderot et Paris-Descartes, Paris, France
| | - Agnès Bloch-Zupan
- Filière de santé Maladies Rares TETECOU: Malformations rares de la tête, du cou et des dents, Hôpital Necker-Enfants Malades, Paris, France.,Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France.,Pôle de Médecine et Chirurgie Bucco-Dentaires, Centre de Référence des Maladies Rares Orales et Dentaires, CRMR O-Rares, ERN CRANIO, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,Institut de Génétique et de Biologie Moléculaire and Cellulaire, Centre Européen de Recherche en Biologie et en Médecine, Université de Strasbourg, CNRS UMR7104, INSERM U1258, Illkirch, France.,Institut d'Etudes Avancées, Université de Strasbourg, USIAS, Strasbourg, France
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16
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Yu M, Wong SW, Han D, Cai T. Genetic analysis: Wnt and other pathways in nonsyndromic tooth agenesis. Oral Dis 2018; 25:646-651. [PMID: 29969831 DOI: 10.1111/odi.12931] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 06/26/2018] [Accepted: 06/27/2018] [Indexed: 12/29/2022]
Abstract
Tooth agenesis (TA) is one of the most common developmental anomalies that affects the number of teeth. An extensive analysis of publicly accessible databases revealed 15 causative genes responsible for nonsyndromic TA, along with their signaling pathways in Wnt/β-catenin, TGF-β/BMP, and Eda/Edar/NF-κB. However, genotype-phenotype correlation analysis showed that most of the causal genes are also responsible for syndromic TA or other conditions. In a total of 198 different mutations of the 15 genes responsible for nonsyndromic TA, 182 mutations (91.9%) are derived from seven genes (AXIN2, EDA, LRP6, MSX1, PAX9, WNT10A, and WNT10B) compared with the remaining 16 mutations (8.1%) identified in the remaining eight genes (BMP4, DKK1, EDAR, EDARADD, GREM2, KREMEN1, LTBP3, and SMOC2). Furthermore, specificity analysis in terms of the ratio of nonsyndromic TA mutations versus syndromic mutations in each of the aforementioned seven genes showed a 98.2% specificity rate in PAX9, 58.9% in WNT10A, 56.6% in MSX1, 41.2% in WNT10B, 31.4% in LRP6, 23.8% in AXIN2%, and 8.4% in EDA. These findings underscore an important role of the Wnt and Wnt-associated pathways in the genetic etiology of this heterozygous disease and shed new lights on the discovery of novel molecular mechanisms associated with tooth agenesis.
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Affiliation(s)
- Miao Yu
- Department of Prosthodontics, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Sing-Wai Wong
- Oral and Craniofacial Biomedicine Curriculum, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina.,Immunity, Inflammation, and Disease Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Dong Han
- Department of Prosthodontics, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Peking University School and Hospital of Stomatology, Beijing, China
| | - Tao Cai
- National Institute of Dental and Craniofacial Research, NIH, Bethesda, Maryland
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17
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Intarak N, Theerapanon T, Srijunbarl A, Suphapeetiporn K, Porntaveetus T, Shotelersuk V. Novel compound heterozygous mutations in KREMEN1
confirm it as a disease gene for ectodermal dysplasia. Br J Dermatol 2018. [DOI: 10.1111/bjd.16541] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- N. Intarak
- Craniofacial Genetics and Stem Cells Research Group; Department of Physiology; Chulalongkorn University; Bangkok 10330 Thailand
| | - T. Theerapanon
- Excellence Center in Regenerative Dentistry; Chulalongkorn University; Bangkok 10330 Thailand
| | - A. Srijunbarl
- Dental Material Science Research Center; Faculty of Dentistry; Chulalongkorn University; Bangkok 10330 Thailand
| | - K. Suphapeetiporn
- Center of Excellence for Medical Genetics; Department of Pediatrics; Faculty of Medicine; Chulalongkorn University; Bangkok 10330 Thailand
- Excellence Center for Medical Genetics; King Chulalongkorn Memorial Hospital; the Thai Red Cross Society; Bangkok 10330 Thailand
| | - T. Porntaveetus
- Craniofacial Genetics and Stem Cells Research Group; Department of Physiology; Chulalongkorn University; Bangkok 10330 Thailand
| | - V. Shotelersuk
- Center of Excellence for Medical Genetics; Department of Pediatrics; Faculty of Medicine; Chulalongkorn University; Bangkok 10330 Thailand
- Excellence Center for Medical Genetics; King Chulalongkorn Memorial Hospital; the Thai Red Cross Society; Bangkok 10330 Thailand
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18
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Williams MA, Letra A. The Changing Landscape in the Genetic Etiology of Human Tooth Agenesis. Genes (Basel) 2018; 9:genes9050255. [PMID: 29772684 PMCID: PMC5977195 DOI: 10.3390/genes9050255] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/01/2018] [Accepted: 05/09/2018] [Indexed: 02/08/2023] Open
Abstract
Despite much progress in understanding the genetics of syndromic tooth agenesis (TA), the causes of the most common, isolated TA remain elusive. Recent studies have identified novel genes and variants contributing to the etiology of TA, and revealed new pathways in which tooth development genes belong. Further, the use of new research approaches including next-generation sequencing has provided increased evidence supporting an oligogenic inheritance model for TA, and may explain the phenotypic variability of the condition. In this review, we present current knowledge about the genetic mechanisms underlying syndromic and isolated TA in humans, and highlight the value of incorporating next-generation sequencing approaches to identify causative and/or modifier genes that contribute to the etiology of TA.
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Affiliation(s)
- Meredith A Williams
- University of Texas Health Science Center at Houston School of Dentistry, Houston, TX 77054, USA.
| | - Ariadne Letra
- Department of Diagnostic and Biomedical Sciences, University of Texas Health Science Center at Houston School of Dentistry, Houston, TX 77054, USA.
- Center for Craniofacial Research, University of Texas Health Science Center at Houston School of Dentistry, Houston, TX 77054, USA.
- Pediatric Research Center, University of Texas Health Science Center at Houston McGovern Medical School, Houston, TX 77030, USA.
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19
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Dinckan N, Du R, Petty LE, Coban-Akdemir Z, Jhangiani SN, Paine I, Baugh EH, Erdem AP, Kayserili H, Doddapaneni H, Hu J, Muzny DM, Boerwinkle E, Gibbs RA, Lupski JR, Uyguner ZO, Below JE, Letra A. Whole-Exome Sequencing Identifies Novel Variants for Tooth Agenesis. J Dent Res 2017; 97:49-59. [PMID: 28813618 DOI: 10.1177/0022034517724149] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Tooth agenesis is a common craniofacial abnormality in humans and represents failure to develop 1 or more permanent teeth. Tooth agenesis is complex, and variations in about a dozen genes have been reported as contributing to the etiology. Here, we combined whole-exome sequencing, array-based genotyping, and linkage analysis to identify putative pathogenic variants in candidate disease genes for tooth agenesis in 10 multiplex Turkish families. Novel homozygous and heterozygous variants in LRP6, DKK1, LAMA3, and COL17A1 genes, as well as known variants in WNT10A, were identified as likely pathogenic in isolated tooth agenesis. Novel variants in KREMEN1 were identified as likely pathogenic in 2 families with suspected syndromic tooth agenesis. Variants in more than 1 gene were identified segregating with tooth agenesis in 2 families, suggesting oligogenic inheritance. Structural modeling of missense variants suggests deleterious effects to the encoded proteins. Functional analysis of an indel variant (c.3607+3_6del) in LRP6 suggested that the predicted resulting mRNA is subject to nonsense-mediated decay. Our results support a major role for WNT pathways genes in the etiology of tooth agenesis while revealing new candidate genes. Moreover, oligogenic cosegregation was suggestive for complex inheritance and potentially complex gene product interactions during development, contributing to improved understanding of the genetic etiology of familial tooth agenesis.
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Affiliation(s)
- N Dinckan
- 1 Department of Medical Genetics, Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey.,2 Department of Diagnostic and Biomedical Sciences and Center for Craniofacial Research, University of Texas Health Science Center at Houston School of Dentistry, Houston, TX, USA
| | - R Du
- 3 Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - L E Petty
- 4 Human Genetics Center, University of Texas Health Science Center at Houston School of Public Health, Houston, TX, USA
| | - Z Coban-Akdemir
- 3 Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - S N Jhangiani
- 5 Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - I Paine
- 3 Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - E H Baugh
- 6 Department of Biology, New York University, New York, NY, USA
| | - A P Erdem
- 7 Department of Pedodontics, Faculty of Dentistry, Istanbul University, Capa, Istanbul, Turkey
| | - H Kayserili
- 8 Department of Medical Genetics, Koc University, School of Medicine (KUSOM), Istanbul, Turkey
| | - H Doddapaneni
- 5 Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - J Hu
- 5 Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - D M Muzny
- 5 Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - E Boerwinkle
- 4 Human Genetics Center, University of Texas Health Science Center at Houston School of Public Health, Houston, TX, USA.,5 Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - R A Gibbs
- 3 Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.,5 Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA
| | - J R Lupski
- 3 Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.,5 Human Genome Sequencing Center, Baylor College of Medicine, Houston, TX, USA.,9 Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA.,10 Texas Children's Hospital, Houston, TX, USA
| | - Z O Uyguner
- 1 Department of Medical Genetics, Istanbul Medical Faculty, Istanbul University, Istanbul, Turkey
| | - J E Below
- 4 Human Genetics Center, University of Texas Health Science Center at Houston School of Public Health, Houston, TX, USA
| | - A Letra
- 2 Department of Diagnostic and Biomedical Sciences and Center for Craniofacial Research, University of Texas Health Science Center at Houston School of Dentistry, Houston, TX, USA.,11 Pediatric Research Center, University of Texas Health Science Center at Houston McGovern Medical School, Houston, TX, USA
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20
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Zebisch M, Jackson VA, Zhao Y, Jones EY. Structure of the Dual-Mode Wnt Regulator Kremen1 and Insight into Ternary Complex Formation with LRP6 and Dickkopf. Structure 2016; 24:1599-605. [PMID: 27524201 PMCID: PMC5014086 DOI: 10.1016/j.str.2016.06.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 06/12/2016] [Accepted: 06/13/2016] [Indexed: 01/17/2023]
Abstract
Kremen 1 and 2 have been identified as co-receptors for Dickkopf (Dkk) proteins, hallmark secreted antagonists of canonical Wnt signaling. We present here three crystal structures of the ectodomain of human Kremen1 (KRM1ECD) at resolutions between 1.9 and 3.2 Å. KRM1ECD emerges as a rigid molecule with tight interactions stabilizing a triangular arrangement of its Kringle, WSC, and CUB structural domains. The structures reveal an unpredicted homology of the WSC domain to hepatocyte growth factor. We further report the general architecture of the ternary complex formed by the Wnt co-receptor Lrp5/6, Dkk, and Krm, determined from a low-resolution complex crystal structure between β-propeller/EGF repeats (PE) 3 and 4 of the Wnt co-receptor LRP6 (LRP6PE3PE4), the cysteine-rich domain 2 (CRD2) of DKK1, and KRM1ECD. DKK1CRD2 is sandwiched between LRP6PE3 and KRM1Kringle-WSC. Modeling studies supported by surface plasmon resonance suggest a direct interaction site between Krm1CUB and Lrp6PE2.
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Affiliation(s)
- Matthias Zebisch
- Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK.
| | - Verity A Jackson
- Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK
| | - Yuguang Zhao
- Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK
| | - E Yvonne Jones
- Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK.
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