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Rattanapornsompong K, Chetruengchai W, Srichomthong C, Theerapanon T, Porntaveetus T, Shotelersuk V. Unraveling the molecular diagnosis of metaphyseal enchondromatosis with D-2-hydroxyglutaric aciduria: A 22-year quest. Am J Med Genet A 2024; 194:e63557. [PMID: 38305044 DOI: 10.1002/ajmg.a.63557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 01/16/2024] [Accepted: 01/20/2024] [Indexed: 02/03/2024]
Affiliation(s)
- Khanti Rattanapornsompong
- Center of Excellence in Genomics and Precision Dentistry, Geriatric Dentistry and Special Patients Care Program, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Wanna Chetruengchai
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Chalurmpon Srichomthong
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - Thanakorn Theerapanon
- Center of Excellence in Genomics and Precision Dentistry, Geriatric Dentistry and Special Patients Care Program, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Geriatric Dentistry and Special Patients Care Program, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
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Sriwattanapong K, Theerapanon T, Khamwachirapitak C, Sae-Ear P, Sa-Ard-Iam N, Shotelersuk V, Porntaveetus T. In-depth investigation of FAM20A insufficiency effects on deciduous dental pulp cells: Altered behaviours, osteogenic differentiation, and inflammatory gene expression. Int Endod J 2024; 57:745-758. [PMID: 38477421 DOI: 10.1111/iej.14056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 02/17/2024] [Accepted: 02/19/2024] [Indexed: 03/14/2024]
Abstract
AIM Loss-of-function mutations in FAM20A result in amelogenesis imperfecta IG (AI1G) or enamel-renal syndrome, characterized by hypoplastic enamel, ectopic calcification, and gingival hyperplasia, with some cases reporting spontaneous tooth infection. Despite previous reports on the consequence of FAM20A reduction in gingival fibroblasts and transcriptome analyses of AI1G pulp tissues, suggesting its involvement in mineralization and infection, its role in deciduous dental pulp cells (DDP) remains unreported. The aim of this study was to evaluate the properties of DDP obtained from an AI1G patient, providing additional insights into the effects of FAM20A on the mineralization of DDP. METHODOLOGY DDP were obtained from a FAM20A-AI1G patient (mutant cells) and three healthy individuals. Cellular behaviours were examined using flow cytometry, MTT, attachment and spreading, colony formation, and wound healing assays. Osteogenic induction was applied to DDP, followed by alizarin red S staining to assess their osteogenic differentiation. The expression of FAM20A-related genes, osteogenic genes, and inflammatory genes was analysed using real-time PCR, Western blot, and/or immunolocalization. Additionally, STRING analysis was performed to predict potential protein-protein interaction networks. RESULTS The mutant cells exhibited a significant reduction in FAM20A mRNA and protein levels, as well as proliferation, migration, attachment, and colony formation. However, normal FAM20A subcellular localization was maintained. Additionally, osteogenic/odontogenic genes, OSX, OPN, RUNX2, BSP, and DSPP, were downregulated, along with upregulated ALP. STRING analysis suggested a potential correlation between FAM20A and these osteogenic genes. After osteogenic induction, the mutant cells demonstrated reduced mineral deposition and dysregulated expression of osteogenic genes. Remarkably, FAM20A, FAM20C, RUNX2, OPN, and OSX were significantly upregulated in the mutant cells, whilst ALP, and OCN was downregulated. Furthermore, the mutant cells exhibited a significant increase in inflammatory gene expression, that is, IL-1β and TGF-β1, whereas IL-6 and NFκB1 expression was significantly reduced. CONCLUSION The reduction of FAM20A in mutant DDP is associated with various cellular deficiencies, including delayed proliferation, attachment, spreading, and migration as well as altered osteogenic and inflammatory responses. These findings provide novel insights into the biology of FAM20A in dental pulp cells and shed light on the molecular mechanisms underlying AI1G pathology.
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Affiliation(s)
- Kanokwan Sriwattanapong
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thanakorn Theerapanon
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Chompak Khamwachirapitak
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Pannagorn Sae-Ear
- Oral Biology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Noppadol Sa-Ard-Iam
- Center of Excellence in Periodontal Disease and Dental Implant, Immunology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- International Graduate Program in Geriatric Dentistry and Special Patients Care, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
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Arunjaroensuk S, Nampuksa K, Monmaturapoj N, Thunyakitpisal P, Porntaveetus T, Mattheos N, Pimkhaokham A. Gene expression, micro-CT and histomorphometrical analysis of sinus floor augmentation with biphasic calcium phosphate and deproteinized bovine bone mineral: A randomized controlled clinical trial. Clin Implant Dent Relat Res 2024; 26:402-414. [PMID: 38317374 DOI: 10.1111/cid.13303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 11/08/2023] [Accepted: 01/04/2024] [Indexed: 02/07/2024]
Abstract
AIMS The aim of this randomized controlled clinical trial was to compare the gene expression, micro-CT, histomorphometrical analysis between biphasic calcium phosphate (BCP) of 70/30 ratio and deproteinized bovine bone mineral (DBBM) in sinus augmentation. MATERIALS AND METHODS Twenty-four patients in need for sinus floor augmentation through lateral approach were randomized into BCP 70/30 ratio or DBBM. After at least 6 months of healing, a total of 24 bone specimens were collected from the entire height of the augmented bone at the area of implant placement and underwent micro-CT, histomorphometric and gene expression analysis. The 12 bone specimens of BCP 70/30 ratio were equally allocated to micro-CT and histologic analysis (test group, n = 6) and gene expression analysis (test group, n = 6). Similarly, the 12 bone specimens of DBBM were also allocated to micro-CT and histologic analysis (control group, n = 6) and gene expression analysis (control group, n = 6). The newly formed bone, remaining graft materials and relative change in gene expression of four target genes were assessed. RESULTS The micro-CT results showed no statistically significant difference in the ratio of bone volume to total volume (BV/TV ratio) for the two groups (BCP 41.51% vs. DBBM 40.97%) and the same was true for residual graft material to total volume (GV/TV ratio, BCP 9.97% vs. DBBM 14.41%). Similarly, no significant difference was shown in the histological analysis in terms of bone formation, (BCP 31.43% vs. DBBM was 30.09%) and residual graft area (DBBM 40.76% vs. BCP 45.06%). With regards to gene expression, the level of ALP was lower in both groups of bone grafted specimens compared with the native bone. On the contrary, the level of OSX, IL-1B and TRAP was higher in augmented bone of both groups compared with the native bone. However, the relative difference in all gene expressions between BCP and DBBM group was not significant. CONCLUSIONS The BCP, HA/β-TCP ratio of 70/30 presented similar histological and micro-CT outcomes in terms of new bone formation and residual graft particles with DBBM. The gene expression analysis revealed different gene expression patterns between augmented and native bone, but showed no significant difference between the two biomaterials.
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Affiliation(s)
- Sirida Arunjaroensuk
- Dental Biomaterials Science Program, Graduate School, Chulalongkorn University, Bangkok, Thailand
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Oral and Maxillofacial Surgery and Digital Implant Surgery Research Unit, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Katanchalee Nampuksa
- Assistive Technology and Medical Devices Research Center (A-MED), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | - Naruporn Monmaturapoj
- Assistive Technology and Medical Devices Research Center (A-MED), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand
| | | | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Nikos Mattheos
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Oral and Maxillofacial Surgery and Digital Implant Surgery Research Unit, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Department of Dental Medicine, Karolinska Institute, Stockholm, Sweden
| | - Atiphan Pimkhaokham
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Oral and Maxillofacial Surgery and Digital Implant Surgery Research Unit, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
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Intarak N, Manaspon C, Theerapanon T, Prommanee S, Samaranayake L, Shotelersuk V, Porntaveetus T. Tooth agenesis related to a novel KDF1 variant: A case report and literature review. Oral Dis 2024. [PMID: 38501196 DOI: 10.1111/odi.14930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 02/19/2024] [Accepted: 03/05/2024] [Indexed: 03/20/2024]
Abstract
OBJECTIVES To investigate the role of Keratinocyte Differentiation Factor 1 (KDF1) in ectodermal dysplasia (ED) and nonsyndromic tooth agenesis (NSTA) and perform a literature review. METHODS Genome sequencing was used to identify genetic variants in a Thai, NSTA proband and validated through Sanger sequencing. Pathogenicity was assessed using ACMG guidelines, MetaRNN and AlphaMissense. A comprehensive review of KDF1/NSTA cases informed genotype-phenotype analysis of the proband. RESULTS The proband revealed multiple missing teeth, caries and extensive periodontal disease. Deep phenotyping showed no signs of ED beyond tooth agenesis. The identified novel KDF1 variant, p.Ile243Leu, was classified as 'likely pathogenic' by ACMG and predicted as 'detrimental' by MetaRNN and AlphaMissense analyses. A total of 14 reviewed KDF1 cases revealed ED-associated variants (3 variants in 8 patients) clustering in the region of amino acids 251-275, within the DUF4656 domain, while NSTA-causing variants (4 variants in 6 patients) were typically found in amino- or carboxy-termini to this region. KDF1/NSTA cases exhibited an average of 15 missing teeth, with a higher prevalence in the mandible. CONCLUSION This study identifies a novel KDF1 variant-related NSTA in Thai people. The genotype-phenotype correlates suggest a distinctive pattern and tooth agenesis of KDF1-related NSTA.
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Affiliation(s)
- Narin Intarak
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Chawan Manaspon
- Biomedical Engineering Institute, Chiang Mai University, Chiang Mai, Thailand
- Biomedical Engineering and Innovation Research Center, Chiang Mai, Thailand
| | - Thanakorn Theerapanon
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Sasiprapa Prommanee
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Lakshman Samaranayake
- Faculty of Dentistry, University of Hong Kong, Hong Kong and Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
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Sriwattanapong K, Theerapanon T, Khamwachirapitak C, Sae-Ear P, Srijunbarl A, Porntaveetus T, Shotelersuk V. Deep dental phenotyping and a novel FAM20A variant in patients with amelogenesis imperfecta type IG. Oral Dis 2024; 30:537-550. [PMID: 36650945 DOI: 10.1111/odi.14510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 12/18/2022] [Accepted: 01/09/2023] [Indexed: 01/19/2023]
Abstract
OBJECTIVES To identify etiologic variants and perform deep dental phenotyping in patients with amelogenesis imperfecta (AI). METHODS Three patients of two unrelated families were evaluated. Genetic variants were investigated by exome and Sanger sequencing. An unerupted permanent third molar (AI1) from Patient1 and a deciduous first molar (AI2) from Patient2, along with three tooth-type matched controls for each were characterized. RESULTS All three patients harbored biallelic pathogenic variants in FAM20A, indicating AI1G. Of the four identified variants, one, c.1231C > T p.(Arg411Trp), was novel. Patient1 possessed the largest deletion, 7531 bp, ever identified in FAM20A. In addition to hypoplastic enamel, multiple impacted teeth, intrapulpal calcification, pericoronal radiolucencies, malocclusion, and periodontal infections were found in all three patients, gingival hyperplasia in Patient1 and Patient2, and alveolar bone exostosis in Patient3. Surface roughness was increased in AI1 but decreased in AI2. Decreased enamel mineral density, hardness, and elastic modulus were observed in AI1 enamel and dentin and AI2 dentin, along with decreased phosphorus, increased carbon, and increased calcium/phosphorus and carbon/oxygen ratios. Severely collapsed enamel rods and disorganized dentin-enamel junction were observed. CONCLUSIONS We report a novel FAM20A variant and, for the first time, the defective mineral composition and physical/mechanical properties of AI1G teeth.
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Affiliation(s)
- Kanokwan Sriwattanapong
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thanakorn Theerapanon
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Chompak Khamwachirapitak
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Pannagorn Sae-Ear
- Oral Biology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Anucharte Srijunbarl
- Dental Materials R&D Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
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Kim C, Pongpanich M, Porntaveetus T. Unraveling metagenomics through long-read sequencing: a comprehensive review. J Transl Med 2024; 22:111. [PMID: 38282030 PMCID: PMC10823668 DOI: 10.1186/s12967-024-04917-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Accepted: 01/21/2024] [Indexed: 01/30/2024] Open
Abstract
The study of microbial communities has undergone significant advancements, starting from the initial use of 16S rRNA sequencing to the adoption of shotgun metagenomics. However, a new era has emerged with the advent of long-read sequencing (LRS), which offers substantial improvements over its predecessor, short-read sequencing (SRS). LRS produces reads that are several kilobases long, enabling researchers to obtain more complete and contiguous genomic information, characterize structural variations, and study epigenetic modifications. The current leaders in LRS technologies are Pacific Biotechnologies (PacBio) and Oxford Nanopore Technologies (ONT), each offering a distinct set of advantages. This review covers the workflow of long-read metagenomics sequencing, including sample preparation (sample collection, sample extraction, and library preparation), sequencing, processing (quality control, assembly, and binning), and analysis (taxonomic annotation and functional annotation). Each section provides a concise outline of the key concept of the methodology, presenting the original concept as well as how it is challenged or modified in the context of LRS. Additionally, the section introduces a range of tools that are compatible with LRS and can be utilized to execute the LRS process. This review aims to present the workflow of metagenomics, highlight the transformative impact of LRS, and provide researchers with a selection of tools suitable for this task.
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Affiliation(s)
- Chankyung Kim
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Graduate Program in Bioinformatics and Computational Biology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Monnat Pongpanich
- Department of Mathematics and Computer Science, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence for Cancer and Inflammation, Chulalongkorn University, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.
- Graduate Program in Geriatric and Special Patients Care, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.
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Hennocq Q, Willems M, Amiel J, Arpin S, Attie-Bitach T, Bongibault T, Bouygues T, Cormier-Daire V, Corre P, Dieterich K, Douillet M, Feydy J, Galliani E, Giuliano F, Lyonnet S, Picard A, Porntaveetus T, Rio M, Rouxel F, Shotelersuk V, Toutain A, Yauy K, Geneviève D, Khonsari RH, Garcelon N. Next generation phenotyping for diagnosis and phenotype-genotype correlations in Kabuki syndrome. Sci Rep 2024; 14:2330. [PMID: 38282012 PMCID: PMC10822856 DOI: 10.1038/s41598-024-52691-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 01/22/2024] [Indexed: 01/30/2024] Open
Abstract
The field of dysmorphology has been changed by the use Artificial Intelligence (AI) and the development of Next Generation Phenotyping (NGP). The aim of this study was to propose a new NGP model for predicting KS (Kabuki Syndrome) on 2D facial photographs and distinguish KS1 (KS type 1, KMT2D-related) from KS2 (KS type 2, KDM6A-related). We included retrospectively and prospectively, from 1998 to 2023, all frontal and lateral pictures of patients with a molecular confirmation of KS. After automatic preprocessing, we extracted geometric and textural features. After incorporation of age, gender, and ethnicity, we used XGboost (eXtreme Gradient Boosting), a supervised machine learning classifier. The model was tested on an independent validation set. Finally, we compared the performances of our model with DeepGestalt (Face2Gene). The study included 1448 frontal and lateral facial photographs from 6 centers, corresponding to 634 patients (527 controls, 107 KS); 82 (78%) of KS patients had a variation in the KMT2D gene (KS1) and 23 (22%) in the KDM6A gene (KS2). We were able to distinguish KS from controls in the independent validation group with an accuracy of 95.8% (78.9-99.9%, p < 0.001) and distinguish KS1 from KS2 with an empirical Area Under the Curve (AUC) of 0.805 (0.729-0.880, p < 0.001). We report an automatic detection model for KS with high performances (AUC 0.993 and accuracy 95.8%). We were able to distinguish patients with KS1 from KS2, with an AUC of 0.805. These results outperform the current commercial AI-based solutions and expert clinicians.
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Affiliation(s)
- Quentin Hennocq
- Imagine Institute, INSERM UMR1163, 75015, Paris, France.
- Service de chirurgie maxillo-faciale et chirurgie plastique, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Paris, France.
- Centre de Référence des Malformations Rares de la Face et de la Cavité Buccale MAFACE, Filière Maladies Rares TeteCou, Paris, France.
- Faculté de Médecine, Université de Paris Cité, 75015, Paris, France.
- Laboratoire 'Forme et Croissance du Crâne', Faculté de Médecine, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Université Paris Cité, Paris, France.
- Hôpital Necker-Enfants Malades, 149 rue de Sèvres, 75015, Paris, France.
| | - Marjolaine Willems
- Département de Génétique Médicale, Maladies Rares et Médecine Personnalisée, Génétique clinique, CHU Montpellier, Centre de référence anomalies du développement SOOR, INSERM U1183, Montpellier University, Montpellier, France
| | - Jeanne Amiel
- Imagine Institute, INSERM UMR1163, 75015, Paris, France
- Faculté de Médecine, Université de Paris Cité, 75015, Paris, France
- Service de médecine génomique des maladies rares, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Stéphanie Arpin
- Service de Génétique, CHU Tours, UMR 1253, iBrain, Université de Tours, Inserm, Tours, France
| | - Tania Attie-Bitach
- Imagine Institute, INSERM UMR1163, 75015, Paris, France
- Faculté de Médecine, Université de Paris Cité, 75015, Paris, France
- Service de médecine génomique des maladies rares, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Thomas Bongibault
- Imagine Institute, INSERM UMR1163, 75015, Paris, France
- Laboratoire 'Forme et Croissance du Crâne', Faculté de Médecine, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Université Paris Cité, Paris, France
| | - Thomas Bouygues
- Imagine Institute, INSERM UMR1163, 75015, Paris, France
- Laboratoire 'Forme et Croissance du Crâne', Faculté de Médecine, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Université Paris Cité, Paris, France
| | - Valérie Cormier-Daire
- Imagine Institute, INSERM UMR1163, 75015, Paris, France
- Faculté de Médecine, Université de Paris Cité, 75015, Paris, France
- Service de médecine génomique des maladies rares, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Pierre Corre
- Nantes Université, CHU Nantes, Service de chirurgie maxillo-faciale et stomatologie, 44000, Nantes, France
- Nantes Université, Oniris, UnivAngers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, 44000, Nantes, France
| | - Klaus Dieterich
- Univ. Grenoble Alpes, Inserm, U1209, IAB, CHU Grenoble Alpes, 38000, Grenoble, France
| | | | | | - Eva Galliani
- Service de chirurgie maxillo-faciale et chirurgie plastique, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Paris, France
- Centre de Référence des Malformations Rares de la Face et de la Cavité Buccale MAFACE, Filière Maladies Rares TeteCou, Paris, France
- Faculté de Médecine, Université de Paris Cité, 75015, Paris, France
| | | | - Stanislas Lyonnet
- Imagine Institute, INSERM UMR1163, 75015, Paris, France
- Faculté de Médecine, Université de Paris Cité, 75015, Paris, France
- Service de médecine génomique des maladies rares, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Arnaud Picard
- Service de chirurgie maxillo-faciale et chirurgie plastique, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Paris, France
- Centre de Référence des Malformations Rares de la Face et de la Cavité Buccale MAFACE, Filière Maladies Rares TeteCou, Paris, France
- Faculté de Médecine, Université de Paris Cité, 75015, Paris, France
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Marlène Rio
- Imagine Institute, INSERM UMR1163, 75015, Paris, France
- Faculté de Médecine, Université de Paris Cité, 75015, Paris, France
- Service de médecine génomique des maladies rares, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Flavien Rouxel
- Département de Génétique Médicale, Maladies Rares et Médecine Personnalisée, Génétique clinique, CHU Montpellier, Centre de référence anomalies du développement SOOR, INSERM U1183, Montpellier University, Montpellier, France
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Annick Toutain
- Service de Génétique, CHU Tours, UMR 1253, iBrain, Université de Tours, Inserm, Tours, France
| | - Kevin Yauy
- Département de Génétique Médicale, Maladies Rares et Médecine Personnalisée, Génétique clinique, CHU Montpellier, Centre de référence anomalies du développement SOOR, INSERM U1183, Montpellier University, Montpellier, France
| | - David Geneviève
- Département de Génétique Médicale, Maladies Rares et Médecine Personnalisée, Génétique clinique, CHU Montpellier, Centre de référence anomalies du développement SOOR, INSERM U1183, Montpellier University, Montpellier, France
| | - Roman H Khonsari
- Imagine Institute, INSERM UMR1163, 75015, Paris, France
- Service de chirurgie maxillo-faciale et chirurgie plastique, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Paris, France
- Centre de Référence des Malformations Rares de la Face et de la Cavité Buccale MAFACE, Filière Maladies Rares TeteCou, Paris, France
- Faculté de Médecine, Université de Paris Cité, 75015, Paris, France
- Laboratoire 'Forme et Croissance du Crâne', Faculté de Médecine, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Université Paris Cité, Paris, France
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Intarak N, Tongchairati K, Termteerapornpimol K, Chantarangsu S, Porntaveetus T. Tooth agenesis patterns and variants in PAX9: A systematic review. Jpn Dent Sci Rev 2023; 59:129-137. [PMID: 37159578 PMCID: PMC10163602 DOI: 10.1016/j.jdsr.2023.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 02/28/2023] [Accepted: 04/04/2023] [Indexed: 05/11/2023] Open
Abstract
Mutations in PAX9 are the most common genetic cause of tooth agenesis (TA). The aim of this study was to systematically review the profiles of the TA and PAX9 variants and establish their genotype-phenotype correlation. Forty articles were eligible for 178 patients and 61 mutations (26 in frame and 32 null mutations). PAX9 mutations predominantly affected molars, mostly the second molar, and the mandibular first premolar was the least affected. More missing teeth were found in the maxilla than the mandible, and with null mutations than in-frame mutations. The number of missing teeth was correlated with the locations of the in-frame mutations with the C-terminus mutations demonstrating the fewest missing teeth. The null mutation location did not influence the number of missing teeth. Null mutations in all locations predominantly affected molars. For the in-frame mutations, a missing second molar was commonly associated with mutations in the highly conserved paired DNA-binding domain, particularly the linking peptide (100% prevalence). In contrast, C-terminus mutations were rarely associated with missing second molars and anterior teeth, but were commonly related to an absent second premolar. These finding indicate that the mutation type and position contribute to different degrees of loss of PAX9 function that further differentially influences the manifestations of TA. This study provides novel information on the correlation of the PAX9 genotype-phenotype, aiding in the genetic counseling for TA.
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Affiliation(s)
- Narin Intarak
- Center of Excellent in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | | | | | - Soranun Chantarangsu
- Department of Oral Pathology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Center of Excellent in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- International Graduate Program in Geriatric Dentistry and Special Patients Care, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
- Correspondence to: Center of Excellent in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand.
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9
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Caengprasath N, Nizon M, Panchaprateep R, Cogne B, Cuinat S, Auburt H, Jonca N, Porntaveetus T, Shotelersuk V. Two novel MBTPS2 missense mutations impairing S2P proteolytic activity lead to IFAP syndrome with new phenotypic anomalies. J Dermatol Sci 2023; 112:166-169. [PMID: 37923657 DOI: 10.1016/j.jdermsci.2023.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 10/06/2023] [Accepted: 10/18/2023] [Indexed: 11/07/2023]
Affiliation(s)
- Natarin Caengprasath
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, the Thai Red Cross Society, Bangkok, Thailand
| | - Mathilde Nizon
- CHU Nantes, Service de Génétique Médicale, Nantes Université, CNRS, INSERM, l'institut du thorax, Nantes, France
| | - Ratchathorn Panchaprateep
- Division of Dermatology, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Benjamin Cogne
- CHU Nantes, Service de Génétique Médicale, Nantes Université, CNRS, INSERM, l'institut du thorax, Nantes, France
| | - Silvestre Cuinat
- CHU Nantes, Service de Génétique Médicale, Nantes Université, CNRS, INSERM, l'institut du thorax, Nantes, France
| | | | - Nathalie Jonca
- CHU Toulouse, Hôpital Purpan, Laboratoire de Biologie Cellulaire et Cytologie, Institut Fédératif de Biologie, Toulouse, France; Infinity, University of Toulouse, CNRS, INSERM, Université Paul Sabatier, Toulouse, France
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, the Thai Red Cross Society, Bangkok, Thailand
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Sriwattanapong K, Theerapanon T, Khamwachirapitak C, Sae-Ear P, Srijunbarl A, Porntaveetus T, Shotelersuk V. Deep dental phenotyping and a novel FAM20A variant in patients with amelogenesis imperfecta type IG. Oral Dis 2023. [PMID: 37794759 DOI: 10.1111/odi.14765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 09/19/2023] [Accepted: 09/21/2023] [Indexed: 10/06/2023]
Affiliation(s)
- Kanokwan Sriwattanapong
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thanakorn Theerapanon
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Chompak Khamwachirapitak
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Pannagorn Sae-Ear
- Oral Biology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Anucharte Srijunbarl
- Dental Materials R&D Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
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11
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Tantibhaedhyangkul W, Tantrapornpong J, Yutchawit N, Theerapanon T, Intarak N, Thaweesapphithak S, Porntaveetus T, Shotelersuk V. Dental characteristics of patients with four different types of skeletal dysplasias. Clin Oral Investig 2023; 27:5827-5839. [PMID: 37548766 PMCID: PMC10560164 DOI: 10.1007/s00784-023-05194-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 07/28/2023] [Indexed: 08/08/2023]
Abstract
OBJECTIVE Skeletal dysplasia (SD) comprises more than 450 separate disorders. We hypothesized that their dental features would be distinctive and investigated the tooth characteristics of four patients with different SDs. MATERIAL AND METHODS Four SD patients with molecularly confirmed diagnoses, Pt-1 acromicric dysplasia, Pt-2 hypophosphatasia and hypochondroplasia, Pt-3 cleidocranial dysplasia, and Pt-4 achondroplasia, were recruited. A tooth from each patient was evaluated for mineral density (micro-computerized tomography), surface roughness (surface profilometer), microhardness, mineral contents (energy-dispersive X-ray), and ultrastructure (scanning electron microscopy and histology), and compared with three tooth-type matched controls. RESULTS Pt-1 and Pt-3 had several unerupted teeth. Pt-2 had an intact-root-exfoliated tooth at 2 years old. The lingual surfaces of the patients' teeth were significantly smoother, while their buccal surfaces were rougher, than controls, except for Pt-1's buccal surface. The patients' teeth exhibited deep grooves around the enamel prisms and rough intertubular dentin. Pt-3 demonstrated a flat dentinoenamel junction and Pt-2 had an enlarged pulp, barely detectable cementum layer, and ill-defined cemento-dentinal junction. Reduced microhardnesses in enamel, dentin, and both layers were observed in Pt-3, Pt-4, and Pt-1, respectively. Pt-1 showed reduced Ca/P ratio in dentin, while both enamel and dentin of Pt-2 and Pt-3 showed reduced Ca/P ratio. CONCLUSION Each SD has distinctive dental characteristics with changes in surface roughness, ultrastructure, and mineral composition of dental hard tissues. CLINICAL RELEVANCE In this era of precision dentistry, identifying the specific potential dental problems for each patient with SD would help personalize dental management guidelines.
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Affiliation(s)
- Worasap Tantibhaedhyangkul
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
- Department of Prosthodontics, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Jenjira Tantrapornpong
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Nuttanun Yutchawit
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thanakorn Theerapanon
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Narin Intarak
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Sermporn Thaweesapphithak
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, the Thai Red Cross Society, Bangkok, 10330, Thailand
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Hennocq Q, Bongibault T, Marlin S, Amiel J, Attie-Bitach T, Baujat G, Boutaud L, Carpentier G, Corre P, Denoyelle F, Djate Delbrah F, Douillet M, Galliani E, Kamolvisit W, Lyonnet S, Milea D, Pingault V, Porntaveetus T, Touzet-Roumazeille S, Willems M, Picard A, Rio M, Garcelon N, Khonsari RH. AI-based diagnosis in mandibulofacial dysostosis with microcephaly using external ear shapes. Front Pediatr 2023; 11:1171277. [PMID: 37664547 PMCID: PMC10469912 DOI: 10.3389/fped.2023.1171277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 07/26/2023] [Indexed: 09/05/2023] Open
Abstract
Introduction Mandibulo-Facial Dysostosis with Microcephaly (MFDM) is a rare disease with a broad spectrum of symptoms, characterized by zygomatic and mandibular hypoplasia, microcephaly, and ear abnormalities. Here, we aimed at describing the external ear phenotype of MFDM patients, and train an Artificial Intelligence (AI)-based model to differentiate MFDM ears from non-syndromic control ears (binary classification), and from ears of the main differential diagnoses of this condition (multi-class classification): Treacher Collins (TC), Nager (NAFD) and CHARGE syndromes. Methods The training set contained 1,592 ear photographs, corresponding to 550 patients. We extracted 48 patients completely independent of the training set, with only one photograph per ear per patient. After a CNN-(Convolutional Neural Network) based ear detection, the images were automatically landmarked. Generalized Procrustes Analysis was then performed, along with a dimension reduction using PCA (Principal Component Analysis). The principal components were used as inputs in an eXtreme Gradient Boosting (XGBoost) model, optimized using a 5-fold cross-validation. Finally, the model was tested on an independent validation set. Results We trained the model on 1,592 ear photographs, corresponding to 1,296 control ears, 105 MFDM, 33 NAFD, 70 TC and 88 CHARGE syndrome ears. The model detected MFDM with an accuracy of 0.969 [0.838-0.999] (p < 0.001) and an AUC (Area Under the Curve) of 0.975 within controls (binary classification). Balanced accuracies were 0.811 [0.648-0.920] (p = 0.002) in a first multiclass design (MFDM vs. controls and differential diagnoses) and 0.813 [0.544-0.960] (p = 0.003) in a second multiclass design (MFDM vs. differential diagnoses). Conclusion This is the first AI-based syndrome detection model in dysmorphology based on the external ear, opening promising clinical applications both for local care and referral, and for expert centers.
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Affiliation(s)
- Quentin Hennocq
- Imagine Institute, INSERM UMR1163, Paris, France
- Service de Chirurgie Maxillo-Faciale et Chirurgie Plastique, Hôpital Necker—Enfants Malades, Assistance Publique—Hôpitaux de Paris, Centre de Référence des Malformations Rares de la Face et de la Cavité Buccale MAFACE, Filière Maladies Rares TeteCou, Faculté de Médecine, Université de Paris Cité, Paris, France
- Laboratoire ‘Forme et Croissance du Crâne’, Faculté de Médecine, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Université Paris Cité, Paris, France
| | - Thomas Bongibault
- Imagine Institute, INSERM UMR1163, Paris, France
- Laboratoire ‘Forme et Croissance du Crâne’, Faculté de Médecine, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Université Paris Cité, Paris, France
| | - Sandrine Marlin
- Imagine Institute, INSERM UMR1163, Paris, France
- Service de Médecine Génomique des Maladies Rares, Hôpital Necker—Enfants Malades, Assistance Publique—Hôpitaux de Paris, Faculté de Médecine, Université de Paris Cité, Paris, France
| | - Jeanne Amiel
- Imagine Institute, INSERM UMR1163, Paris, France
- Service de Médecine Génomique des Maladies Rares, Hôpital Necker—Enfants Malades, Assistance Publique—Hôpitaux de Paris, Faculté de Médecine, Université de Paris Cité, Paris, France
| | - Tania Attie-Bitach
- Imagine Institute, INSERM UMR1163, Paris, France
- Service de Médecine Génomique des Maladies Rares, Hôpital Necker—Enfants Malades, Assistance Publique—Hôpitaux de Paris, Faculté de Médecine, Université de Paris Cité, Paris, France
| | - Geneviève Baujat
- Imagine Institute, INSERM UMR1163, Paris, France
- Service de Médecine Génomique des Maladies Rares, Hôpital Necker—Enfants Malades, Assistance Publique—Hôpitaux de Paris, Faculté de Médecine, Université de Paris Cité, Paris, France
| | - Lucile Boutaud
- Service de Médecine Génomique des Maladies Rares, Hôpital Necker—Enfants Malades, Assistance Publique—Hôpitaux de Paris, Faculté de Médecine, Université de Paris Cité, Paris, France
| | - Georges Carpentier
- CHU Lille, Inserm, Service de Chirurgie Maxillo-Faciale et Stomatologie, U1008-Controlled Drug Delivery Systems and Biomaterial, Université de Lille, Lille, France
| | - Pierre Corre
- Department of Oral and Maxillofacial Surgery, INSERM U1229—Regenerative Medicine and Skeleton RMeS, Nantes, France
- Department of Oral and Maxillofacial Surgery, Nantes University, CHU Nantes, Nantes, France
| | - Françoise Denoyelle
- Department of Paediatric Otolaryngology, AP-HP, Hôpital Necker-Enfants Malades, Paris, France
| | | | | | - Eva Galliani
- Service de Chirurgie Maxillo-Faciale et Chirurgie Plastique, Hôpital Necker—Enfants Malades, Assistance Publique—Hôpitaux de Paris, Centre de Référence des Malformations Rares de la Face et de la Cavité Buccale MAFACE, Filière Maladies Rares TeteCou, Faculté de Médecine, Université de Paris Cité, Paris, France
| | - Wuttichart Kamolvisit
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Stanislas Lyonnet
- Imagine Institute, INSERM UMR1163, Paris, France
- Service de Médecine Génomique des Maladies Rares, Hôpital Necker—Enfants Malades, Assistance Publique—Hôpitaux de Paris, Faculté de Médecine, Université de Paris Cité, Paris, France
| | - Dan Milea
- Duke-NUS Medical School Singapore, Singapore Eye Research Institute, Singapore National Eye Centre, Singapore, Singapore
| | - Véronique Pingault
- Imagine Institute, INSERM UMR1163, Paris, France
- Service de Médecine Génomique des Maladies Rares, Hôpital Necker—Enfants Malades, Assistance Publique—Hôpitaux de Paris, Faculté de Médecine, Université de Paris Cité, Paris, France
| | - Thantrira Porntaveetus
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Sandrine Touzet-Roumazeille
- CHU Lille, Inserm, Service de Chirurgie Maxillo-Faciale et Stomatologie, U1008-Controlled Drug Delivery Systems and Biomaterial, Université de Lille, Lille, France
| | - Marjolaine Willems
- Département de Génétique Clinique, CHRU de Montpellier, Hôpital Arnaud de Villeneuve, Institute for Neurosciences of Montpellier, INSERM, Univ Montpellier, Montpellier, France
| | - Arnaud Picard
- Service de Chirurgie Maxillo-Faciale et Chirurgie Plastique, Hôpital Necker—Enfants Malades, Assistance Publique—Hôpitaux de Paris, Centre de Référence des Malformations Rares de la Face et de la Cavité Buccale MAFACE, Filière Maladies Rares TeteCou, Faculté de Médecine, Université de Paris Cité, Paris, France
| | - Marlène Rio
- Imagine Institute, INSERM UMR1163, Paris, France
- Service de Médecine Génomique des Maladies Rares, Hôpital Necker—Enfants Malades, Assistance Publique—Hôpitaux de Paris, Faculté de Médecine, Université de Paris Cité, Paris, France
| | | | - Roman H. Khonsari
- Imagine Institute, INSERM UMR1163, Paris, France
- Service de Chirurgie Maxillo-Faciale et Chirurgie Plastique, Hôpital Necker—Enfants Malades, Assistance Publique—Hôpitaux de Paris, Centre de Référence des Malformations Rares de la Face et de la Cavité Buccale MAFACE, Filière Maladies Rares TeteCou, Faculté de Médecine, Université de Paris Cité, Paris, France
- Laboratoire ‘Forme et Croissance du Crâne’, Faculté de Médecine, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Université Paris Cité, Paris, France
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Thaweesapphithak S, Theerapanon T, Rattanapornsompong K, Intarak N, Kanpittaya P, Trachoo V, Porntaveetus T, Shotelersuk V. Functional consequences of C-terminal mutations in RUNX2. Sci Rep 2023; 13:12202. [PMID: 37500953 PMCID: PMC10374887 DOI: 10.1038/s41598-023-39293-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 07/22/2023] [Indexed: 07/29/2023] Open
Abstract
Cleidocranial dysplasia (CCD) is a genetic disorder caused by mutations in the RUNX2 gene, affecting bone and teeth development. Previous studies focused on mutations in the RUNX2 RHD domain, with limited investigation of mutations in the C-terminal domain. This study aimed to investigate the functional consequences of C-terminal mutations in RUNX2. Eight mutations were analyzed, and their effects on transactivation activity, protein expression, subcellular localization, and osteogenic potential were studied. Truncating mutations in the PST region and a missense mutation in the NMTS region resulted in increased transactivation activity, while missense mutations in the PST showed activity comparable to the control. Truncating mutations produced truncated proteins, while missense mutations produced normal-sized proteins. Mutant proteins were mislocalized, with six mutant proteins detected in both the nucleus and cytoplasm. CCD patient bone cells exhibited mislocalization of RUNX2, similar to the generated mutant. Mislocalization of RUNX2 and reduced expression of downstream genes were observed in MSCs from a CCD patient with the p.Ser247Valfs*3 mutation, leading to compromised osteogenic potential. This study provides insight into the functional consequences of C-terminal mutations in RUNX2, including reduced expression, mislocalization, and aberrant transactivation of downstream genes, contributing to the compromised osteogenic potential observed in CCD.
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Affiliation(s)
- Sermporn Thaweesapphithak
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
- Graduate Program in Oral Biology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thanakorn Theerapanon
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Khanti Rattanapornsompong
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Narin Intarak
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Pimsiri Kanpittaya
- Department of Orthodontics, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorapat Trachoo
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand.
- Graduate Program in Geriatric and Special Patients Care, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, the Thai Red Cross Society, Bangkok, Thailand
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Sriwattanapong K, Theerapanon T, Boonprakong L, Srijunbarl A, Porntaveetus T, Shotelersuk V. Novel ITGB6 variants cause hypoplastic-hypomineralized amelogenesis imperfecta and taurodontism: characterization of tooth phenotype and review of literature. BDJ Open 2023; 9:15. [PMID: 37041139 PMCID: PMC10090198 DOI: 10.1038/s41405-023-00142-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 03/11/2023] [Accepted: 03/23/2023] [Indexed: 04/13/2023] Open
Abstract
OBJECTIVES To characterize phenotype and genotype of amelogenesis imperfecta (AI) in a Thai patient, and review of literature. MATERIALS AND METHODS Variants were identified using trio-exome and Sanger sequencing. The ITGB6 protein level in patient's gingival cells was measured. The patient's deciduous first molar was investigated for surface roughness, mineral density, microhardness, mineral composition, and ultrastructure. RESULTS The patient exhibited hypoplastic-hypomineralized AI, taurodontism, and periodontal inflammation. Exome sequencing identified the novel compound heterozygous ITGB6 mutation, a nonsense c.625 G > T, p.(Gly209*) inherited from mother and a splicing c.1661-3 C > G from father, indicating AI type IH. The ITGB6 level in patient cells was significantly reduced, compared with controls. Analyses of a patient's tooth showed a significant increase in roughness while mineral density of enamel and microhardness of enamel and dentin were significantly reduced. In dentin, carbon was significantly decreased while calcium, phosphorus, and oxygen levels were significantly increased. Severely collapsed enamel rods and a gap in dentinoenamel junction were observed. Of six affected families and eight ITGB6 variants that have been reported, our patient was the only one with taurodontism. CONCLUSION We report the hypoplasia/hypomineralization/taurodontism AI patient with disturbed tooth characteristics associated with the novel ITGB6 variants and reduced ITGB6 expression, expanding genotype, phenotype, and understanding of autosomal recessive AI.
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Affiliation(s)
- Kanokwan Sriwattanapong
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thanakorn Theerapanon
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Lawan Boonprakong
- Office of Research Affairs, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Anucharte Srijunbarl
- Dental Materials R&D Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, the Thai Red Cross Society, Bangkok, 10330, Thailand
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15
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Nowwarote N, Osathanon T, Fournier BPJ, Theerapanon T, Yodsanga S, Kamolratanakul P, Porntaveetus T, Shotelersuk V. PTEN regulates proliferation and osteogenesis of dental pulp cells and adipogenesis of human adipose-derived stem cells. Oral Dis 2023; 29:735-746. [PMID: 34558757 DOI: 10.1111/odi.14030] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 09/08/2021] [Accepted: 09/18/2021] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To investigate the role of phosphatase and tensin homolog (PTEN) in dental pulp cells (hDPs) and adipose-derived mesenchymal stem cells (hADSCs). MATERIALS AND METHODS Genetic variant was identified with exome sequencing. The hDPs isolated from a patient with Cowden syndrome were investigated for their proliferation, osteogenesis, adipogenesis, and gene expression compared with controls. The normal hDPs and hADSCs were treated with the PTEN inhibitor, VO-OHpic trihydrate (VOT), to investigate the effect of PTEN inhibition. RESULTS A heterozygous nonsense PTEN variant, c.289C>T (p.Gln97*), was identified in the Cowden patient's blood and intraoral lipomas. The mutated hDPs showed significantly decreased proliferation, but significantly upregulated RUNX2 and OSX expression and mineralization, indicating enhanced osteogenic ability in mutated cells. The normal hDPs treated with VOT showed the decreases in proliferation, colony formation, osteogenic marker genes, alkaline phosphatase activity, and mineral deposition, suggesting that PTEN inhibition diminishes proliferation and osteogenic potential of hDPs. Regarding adipogenesis, the VOT-treated hADSCs showed a reduced number of cells containing lipid droplets, suggesting that PTEN inhibition might compromise adipogenic ability of hADSCs. CONCLUSIONS PTEN regulates proliferation, enhances osteogenesis of hDPs, and induces adipogenesis of hADSCs. The gain-of-function PTEN variant, p.Gln97*, enhances osteogenic ability of PTEN in hDPs.
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Affiliation(s)
- Nunthawan Nowwarote
- Dental Stem Cell Biology Research Unit and Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.,Centre de Recherche des Cordeliers, Universite de Paris, Sorbonne Universite, Paris, France.,Dental Faculty Garanciere, Oral Biology Department, Universite de Paris, Paris, France
| | - Thanaphum Osathanon
- Dental Stem Cell Biology Research Unit and Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Benjamin P J Fournier
- Centre de Recherche des Cordeliers, Universite de Paris, Sorbonne Universite, Paris, France.,Dental Faculty Garanciere, Oral Biology Department, Universite de Paris, Paris, France
| | - Thanakorn Theerapanon
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Somchai Yodsanga
- Department of Oral Pathology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Paksinee Kamolratanakul
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
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16
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Suratannon N, Ittiwut C, Dik WA, Ittiwut R, Meesilpavikkai K, Israsena N, Ingrungruanglert P, Dalm VASH, van Daele PLA, Sanpavat A, Chaijitraruch N, Schrijver B, Buranapraditkun S, Porntaveetus T, Swagemakers SMA, IJspeert H, Palaga T, Suphapeetiporn K, van der Spek PJ, Hirankarn N, Chatchatee P, Martin van Hagen P, Shotelersuk V. A germline STAT6 gain-of-function variant is associated with early-onset allergies. J Allergy Clin Immunol 2023; 151:565-571.e9. [PMID: 36216080 DOI: 10.1016/j.jaci.2022.09.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 09/16/2022] [Accepted: 09/27/2022] [Indexed: 11/15/2022]
Abstract
BACKGROUND The signal transducer and activator of transcription 6 (STAT6) signaling pathway plays a central role in allergic inflammation. To date, however, there have been no descriptions of STAT6 gain-of-function variants leading to allergies in humans. OBJECTIVE We report a STAT6 gain-of-function variant associated with early-onset multiorgan allergies in a family with 3 affected members. METHODS Exome sequencing and immunophenotyping of T-helper cell subsets were conducted. The function of the STAT6 protein was analyzed by Western blot, immunofluorescence, electrophoretic mobility shift assays, and luciferase assays. Gastric organoids obtained from the index patient were used to study downstream effector cytokines. RESULTS We identified a heterozygous missense variant (c.1129G>A;p.Glu377Lys) in the DNA binding domain of STAT6 that was de novo in the index patient's father and was inherited by 2 of his 3 children. Severe atopic dermatitis and food allergy were key presentations. Clinical heterogeneity was observed among the affected individuals. Higher levels of peripheral blood TH2 lymphocytes were detected. The mutant STAT6 displayed a strong preference for nuclear localization, increased DNA binding affinity, and spontaneous transcriptional activity. Moreover, gastric organoids showed constitutive activation of STAT6 downstream signaling molecules. CONCLUSIONS A germline STAT6 gain-of-function variant results in spontaneous activation of the STAT6 signaling pathway and is associated with an early-onset and severe allergic phenotype in humans. These observations enhance our knowledge of the molecular mechanisms underlying allergic diseases and will potentially contribute to novel therapeutic interventions.
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Affiliation(s)
- Narissara Suratannon
- Center of Excellence for Allergy and Clinical Immunology, Division of Allergy, Immunology and Rheumatology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand; Department of Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Chupong Ittiwut
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
| | - Willem A Dik
- Laboratory Medical Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Academic Center for Rare Immunological Diseases (Rare Immunological Disease Center), Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Rungnapa Ittiwut
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
| | - Kornvalee Meesilpavikkai
- Center of Excellence in Immunology and Immune-mediated Diseases, Immunology Unit, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Department of Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Nipan Israsena
- Center of Excellence for Stem Cell and Cell Therapy, Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Praewphan Ingrungruanglert
- Center of Excellence for Stem Cell and Cell Therapy, Department of Pharmacology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Virgil A S H Dalm
- Department of Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Internal Medicine, Division of Clinical Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Academic Center for Rare Immunological Diseases (Rare Immunological Disease Center), Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Paul L A van Daele
- Department of Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Internal Medicine, Division of Clinical Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Academic Center for Rare Immunological Diseases (Rare Immunological Disease Center), Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Anapat Sanpavat
- Department of Pathology, Faculty of Medicine, Thai Pediatric Gastroenterology, Hepatology and Immunology Research Unit, Chulalongkorn University, Bangkok, Thailand
| | - Nataruks Chaijitraruch
- Pediatric Gastroenterology and Hepatology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Excellence Center for Organ Transplantation, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
| | - Benjamin Schrijver
- Laboratory Medical Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Internal Medicine, Division of Clinical Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Academic Center for Rare Immunological Diseases (Rare Immunological Disease Center), Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Supranee Buranapraditkun
- Cellular Immunology Laboratory Allergy and Clinical Immunology Unit, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Sigrid M A Swagemakers
- Department of Pathology and Clinical Bioinformatics, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Academic Center for Rare Immunological Diseases (Rare Immunological Disease Center), Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Erasmus Center for Data Analytics, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Hanna IJspeert
- Laboratory Medical Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Academic Center for Rare Immunological Diseases (Rare Immunological Disease Center), Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Tanapat Palaga
- Center of Excellence in Immunology and Immune-mediated Diseases, Immunology Unit, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Kanya Suphapeetiporn
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
| | - Peter J van der Spek
- Department of Pathology and Clinical Bioinformatics, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Academic Center for Rare Immunological Diseases (Rare Immunological Disease Center), Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Erasmus Center for Data Analytics, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Nattiya Hirankarn
- Center of Excellence in Immunology and Immune-mediated Diseases, Immunology Unit, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.
| | - Pantipa Chatchatee
- Center of Excellence for Allergy and Clinical Immunology, Division of Allergy, Immunology and Rheumatology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand.
| | - P Martin van Hagen
- Center of Excellence for Allergy and Clinical Immunology, Division of Allergy, Immunology and Rheumatology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand; Department of Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Internal Medicine, Division of Clinical Immunology, Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands; Academic Center for Rare Immunological Diseases (Rare Immunological Disease Center), Erasmus University Medical Center Rotterdam, Rotterdam, the Netherlands.
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
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17
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Rattanapornsompong K, Gavila P, Tungsanga S, Chanakul A, Apivatthakakul A, Tengsujaritkul M, Tongsong T, Theerapanon T, Porntaveetus T, Shotelersuk V. Novel CNNM4 variant and clinical features of Jalili syndrome. Clin Genet 2023; 103:256-257. [PMID: 36354001 DOI: 10.1111/cge.14258] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/24/2022] [Accepted: 10/25/2022] [Indexed: 11/11/2022]
Abstract
The study identifies a non-consanguineous multigenerational family of the Lua ethnic group in Northern Thailand with three members affected with hypoplastic-hypocalcified amelogenesis imperfecta, cone-rod dystrophy, and harboring a novel homozygous missense variant, c.1475G>A p.(Gly492Asp), in CNNM4, indicating Jalili syndrome. We report features including advanced dental age, crossbite, developmental delay, expanding genotypic and phenotypic spectra of Jalili syndrome, and perform the prenatal genetic testing that helps avoid unnecessary pregnancy termination.
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Affiliation(s)
- Khanti Rattanapornsompong
- Center of Excellence in Genomics and Precision Dentistry, Geriatric Dentistry and Special Patients Care Program, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Patcharaporn Gavila
- Center of Excellence in Genomics and Precision Dentistry, Geriatric Dentistry and Special Patients Care Program, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.,Intercountry Centre for Oral Health, Ministry of Public Health, Thailand
| | | | - Ankanee Chanakul
- Department of Pediatrics, Chulalongkorn University, Bangkok, Thailand
| | | | | | - Theera Tongsong
- Department of Obstetrics and Gynecology, Chiang Mai University, Chiang Mai, Thailand
| | - Thanakorn Theerapanon
- Center of Excellence in Genomics and Precision Dentistry, Geriatric Dentistry and Special Patients Care Program, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Geriatric Dentistry and Special Patients Care Program, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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18
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Kanchanasevee C, Chantarangsu S, Pittayapat P, Porntaveetus T. Patterns of nonsyndromic tooth agenesis and sexual dimorphism. BMC Oral Health 2023; 23:37. [PMID: 36691053 PMCID: PMC9869554 DOI: 10.1186/s12903-023-02753-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 01/13/2023] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Sex dimorphism has been implicated in oral health differences and the pathogenesis of oral diseases, such as tooth agenesis, periodontal disease, dental caries, and tooth loss. Tooth agenesis (TA) is one of the most common developmental anomalies in humans, and its prevalence and patterns are different across ethnic groups. The aim of this study was to investigate the phenotypes and sex-associated patterns of nonsyndromic tooth agenesis (TA) in Thai dental patients. METHODS One thousand ninety panoramic radiographs were examined. One hundred and one subjects (37 males, 64 females, 15-20 years-old) with nonsyndromic TA were evaluated. Differences in TA prevalence between groups were analyzed using the chi-square or Fisher exact test. RESULTS The TA prevalence, excluding third molars, was 9.3% and more frequently found in the mandible compared with the maxilla. The maxilla demonstrated a higher prevalence of first premolar agenesis than the mandible (P = 0.012), while the mandible had a higher prevalence of second premolar agenesis than the maxilla (P = 0.031). There were significantly more males missing one tooth than females, however, there were more females missing two or more teeth than males (P = 0.042). A missing maxillary left lateral incisor was significantly more frequent in males (P = 0.019), while a missing mandibular right lateral incisor was more frequent in females (P = 0.025). In females, the pattern of two mandibular lateral incisors agenesis was the most common and significantly present in females more than males (P = 0.015). In contrast, the pattern of one mandibular left lateral incisor agenesis was only observed in males and significantly found in males more than females (P = 0.047). CONCLUSIONS We demonstrate sex-associated differences in nonsyndromic tooth agenesis. The prevalence of single tooth agenesis was higher in males, while that of two or more teeth agenesis was higher in females. We found different patterns of lateral incisor agenesis between males and females.
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Affiliation(s)
- Charinya Kanchanasevee
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
- Geriatric Dentistry and Special Patients Care Program, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Soranun Chantarangsu
- Department of Oral Pathology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Pisha Pittayapat
- Department of Radiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand.
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19
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Wejaphikul K, Srilanchakon K, Kamolvisit W, Jantasuwan S, Santawong K, Tongkobpetch S, Theerapanon T, Damrongmanee A, Hongsawong N, Ukarapol N, Dejkhamron P, Supornsilchai V, Porntaveetus T, Shotelersuk V. Novel Variants and Phenotypes in NEUROG3-Associated Syndrome. J Clin Endocrinol Metab 2022; 108:52-58. [PMID: 36149814 DOI: 10.1210/clinem/dgac554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 09/14/2022] [Indexed: 02/03/2023]
Abstract
CONTEXT Biallelic pathogenic variants in the NEUROG3 gene cause malabsorptive diarrhea, insulin-dependent diabetes mellitus (IDDM), and rarely hypogonadotropic hypogonadism. With only 17 reported cases, the clinical and mutational spectra of this disease are far from complete. OBJECTIVE To identify the underlying genetic etiology in 3 unrelated Thai patients who presented with early-onset malabsorptive diarrhea, endocrine abnormalities, and renal defects and to determine the pathogenicity of the newly identified pathogenic variants using luciferase reporter assays and western blot. METHODS Three unrelated patients with congenital diarrhea were recruited. Detailed clinical and endocrinological features were obtained. Exome sequencing was performed to identify mutations and in vitro functional experiments including luciferase reporter assay were studied to validate their pathogenicity. RESULTS In addition to malabsorptive diarrhea due to enteric anendocrinosis, IDDM, short stature, and delayed puberty, our patients also exhibited pituitary gland hypoplasia with multiple pituitary hormone deficiencies (Patient 1, 2, 3) and proximal renal tubulopathy (Patient 2, 3) that have not previously reported. Exome sequencing revealed that Patient 1 was homozygous for c.371C > G (p.Thr124Arg) while the other 2 patients were homozygous for c.284G > C (p.Arg95Pro) in NEUROG3. Both variants have never been previously reported. Luciferase reporter assay demonstrated that these 2 variants impaired transcriptional activity of NEUROG3. CONCLUSIONS This study reported pituitary gland hypoplasia with multiple pituitary hormone deficiencies and proximal renal tubulopathy and 2 newly identified NEUROG3 loss-of-function variants in the patients with NEUROG3-associated syndrome.
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Affiliation(s)
- Karn Wejaphikul
- Department of Pediatrics, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
- Northern Diabetes Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Khomsak Srilanchakon
- Division of Endocrinology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Wuttichart Kamolvisit
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Supavadee Jantasuwan
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Kanokwan Santawong
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Siraprapa Tongkobpetch
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Thanakorn Theerapanon
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
| | - Alisara Damrongmanee
- Department of Pediatrics, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Nattaphorn Hongsawong
- Department of Pediatrics, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Nuthapong Ukarapol
- Department of Pediatrics, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Prapai Dejkhamron
- Department of Pediatrics, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
- Northern Diabetes Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Vichit Supornsilchai
- Division of Endocrinology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, 10330, Thailand
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20
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Caengprasath N, Buasong A, Ittiwut C, Khongphatthanayothin A, Porntaveetus T, Shotelersuk V. Severe coarctation of the aorta, developmental delay, and multiple dysmorphic features in a child with SMAD6 and SMARCA4 variants. Eur J Med Genet 2022; 65:104601. [PMID: 36049609 DOI: 10.1016/j.ejmg.2022.104601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/18/2022] [Accepted: 08/25/2022] [Indexed: 01/28/2023]
Abstract
Pathogenic variants in SMARCA4 cause Coffin-Siris syndrome (CSS) while those in SMAD6 lead to aortic valve disease and other dysmorphisms. We identified a 6-year-old Thai boy with features of CSS alongside unusual manifestations including, very severe coarctation of the aorta (CoA) requiring coarctectomy in the neonatal period and bilateral radioulnar synostoses. Trio exome sequencing revealed that the patient harbored two de novo variants, a missense c.2475G > T, p.(Trp825Cys) in SMARCA4 and a nonsense c.652C > T, p.(Gln218Ter) in SMAD6. Both of which have never been previously reported. The clinical presentations in our patient are a result of the combinational features of each genetic variant: the SMARCA4 p.(Trp825Cys) variant leads to facial features of Coffin Siris syndrome and Dandy-Walker malformation, while the SMAD6 p.(Gln218Ter) variant underlies radioulnar synostosis. Interestingly, the severity of CoA in the proband is beyond the phenotypic spectra of each genetic variant and may be a result of the synergistic effects of both variants. Here, we report a child with variants in SMARCA4 or SMAD6 with combined features of each plus a severe CoA, possibly due to an additive effect of each variant.
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Affiliation(s)
- Natarin Caengprasath
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
| | - Aayalida Buasong
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
| | - Chupong Ittiwut
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
| | - Apichai Khongphatthanayothin
- Center of Excellence in Arrhythmia Research, Department of Medicine, Chulalongkorn University and Bangkok General Hospital, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
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21
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Porntaveetus T, Abid MF, Seppala M. Editorial: Contemporary Views on the Genetics of Dental and Craniofacial Anomalies. Front Dent Med 2022. [DOI: 10.3389/fdmed.2022.953256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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22
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Kuptanon C, Thamkunanon V, Srichomthong C, Theerapanon T, Suphapeetiporn K, Porntaveetus T, Shotelersuk V. Novel BMP1, CRTAP, and SERPINF1 variants causing autosomal recessive osteogenesis imperfecta. Clin Genet 2022; 102:242-243. [PMID: 35703132 DOI: 10.1111/cge.14172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 05/28/2022] [Accepted: 05/30/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Chulaluck Kuptanon
- Department of Pediatrics, Queen Sirikit National Institute of Child Health, Bangkok, Thailand.,Department of Pediatrics, College of Medicine, Rangsit University, Bangkok, Thailand
| | - Verasak Thamkunanon
- Department of Orthopedics, Queen Sirikit National Institute of Child Health, Bangkok, Thailand
| | - Chalurmpon Srichomthong
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
| | - Thanakorn Theerapanon
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Kanya Suphapeetiporn
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
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23
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Faruangsaeng T, Thaweesapphitak S, Khamwachirapitak C, Porntaveetus T, Shotelersuk V. Comparative transcriptome profiles of human dental pulp stem cells from maxillary and mandibular teeth. Sci Rep 2022; 12:8860. [PMID: 35614192 PMCID: PMC9133121 DOI: 10.1038/s41598-022-12867-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 05/11/2022] [Indexed: 11/09/2022] Open
Abstract
The molecular control of tooth development is different between the maxilla and mandible, contributing to different tooth shapes and locations; however, whether this difference occurs in human permanent teeth is unknown. The aim of this study was to investigate and compare the transcriptome profiles of permanent maxillary and mandibular posterior teeth. Ten participants who had a pair of opposing premolars or molars extracted were recruited. The RNA obtained from cultured dental pulp stem cells underwent RNA-sequencing and qRT-PCR. The transcriptome profiles of two opposing premolar pairs and two molar pairs demonstrated that the upper premolars, lower premolars, upper molars, and lower molars expressed the same top-ranked genes, comprising FN1, COL1A1, COL1A2, ACTB, and EEFIA1, which are involved in extracellular matrix organization, immune system, signal transduction, hemostasis, and vesicle-mediated transport. Comparative transcriptome analyses of each/combined tooth pairs demonstrated that PITX1 was the only gene with different expression levels between upper and lower posterior teeth. PITX1 exhibited a 64-fold and 116-fold higher expression level in lower teeth compared with their upper premolars and molars, respectively. These differences were confirmed by qRT-PCR. Taken together, this study, for the first time, reveals that PITX1 is expressed significantly higher in mandibular posterior teeth compared with maxillary posterior teeth. The difference is more evident in the molars compared with premolars and consistent with its expression pattern in mouse developing teeth. We demonstrate that differences in lower versus upper teeth gene expression during odontogenesis occur in permanent teeth and suggest that these differences should be considered in molecular studies of dental pulp stem cells. Our findings pave the way to develop a more precise treatment in regenerative dentistry such as gene-based therapies for dentin/pulp regeneration and regeneration of different tooth types.
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Affiliation(s)
- Thira Faruangsaeng
- International Graduate Program in Geriatric Dentistry and Special Patients Care, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.,Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Sermporn Thaweesapphitak
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Chompak Khamwachirapitak
- Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thantrira Porntaveetus
- International Graduate Program in Geriatric Dentistry and Special Patients Care, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand. .,Center of Excellence in Genomics and Precision Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
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24
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Intarak N, Theerapanon T, Porntaveetus T, Shotelersuk V. Patterns of molar agenesis associated with p.P20L and p.R77Q variants in PAX9. Eur J Oral Sci 2022; 130:e12855. [PMID: 35182440 DOI: 10.1111/eos.12855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 01/14/2022] [Indexed: 11/29/2022]
Abstract
Nonsyndromic tooth agenesis is associated with variants in several genes. There are numerous genotype-phenotype publications involving many patients and kindreds. Here, we identified six Thai individuals in two families with nonsyndromic tooth agenesis, performed exome sequencing, and conducted functional experiments. Family 1 had four affected members carrying the heterozygous PAX9 variant, c.59C>T (p.Pro20Leu). The p.Pro20Leu was previously reported in two families having four and three affected members. These seven cases and Proband-1 had agenesis of at least three third molars. Family 2 comprised two affected members with agenesis of all 12 molars. Both individuals were heterozygous for c.230G>A (p.Arg77Gln) in PAX9, which has not been reported previously. This variant is predicted to be damaging, evolutionarily conserved, and resides in the PAX9 linking peptide. The BMP4 RNA levels in Proband-1's leukocytes were not significantly different from those in the controls, whereas BMP4 levels observed in Proband-2 were significantly increased. Moreover, the p.Arg77Gln variant demonstrated nuclear localization similar to the wild-type but resulted in significantly impaired transactivation of BMP4, a PAX9 downstream gene. In conclusion, we demonstrate that the PAX9 p.Pro20Leu is highly associated with absent third molars, while the novel PAX9 p.Arg77Gln impairs BMP4 transactivation and is associated with total molar agenesis.
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Affiliation(s)
- Narin Intarak
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thanakorn Theerapanon
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, the Thai Red Cross Society, Bangkok, Thailand
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25
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Sriwattanapong K, Sa-Ard-Iam N, Boonprakong L, Subbalekha K, Trachoo V, Suratannon N, Porntaveetus T, Shotelersuk V. Reduced ELANE and SLPI expression compromises dental pulp cell activity. Cell Prolif 2021; 54:e13132. [PMID: 34580954 PMCID: PMC8560611 DOI: 10.1111/cpr.13132] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 09/13/2021] [Accepted: 09/15/2021] [Indexed: 02/03/2023] Open
Abstract
Background Patients with ELANE variants and severe congenital neutropenia (SCN) commonly develop oral complications. Whether they are caused only by low neutrophil count or the combination of neutropenia and aberrant dental cells is unknown. Methods Genetic variant was identified with exome sequencing. Dental pulp cells isolated from the SCN patient with an ELANE mutation were investigated for gene expression, enzyme activity, proliferation, colony formation, wound healing, apoptosis, ROS, attachment, spreading and response to lipopolysaccharide. Results ELANE cells had diminished expression of ELANE and SLPI and reduced neutrophil elastase activity. Moreover, ELANE cells exhibited impaired proliferation, colony forming, migration, attachment and spreading; and significantly increased ROS formation and apoptosis, corresponding with increased Cyclin D1 and MMP2 levels. The intrinsic levels of TGF‐β1 and TNF‐α were significantly increased; however, IL‐6, IL‐8 and NF‐kB1 were significantly decreased in ELANE cells compared with those in controls. After exposure to lipopolysaccharide, ELANE cells grew larger, progressed to more advanced cell spreading stages and showed significantly increased SLPI, TNF‐α and NF‐kB1 and tremendously increased IL‐6 and IL‐8 expression, compared with controls. Conclusion This study, for the first time, suggests that in addition to neutropenia, the aberrant levels and functions of ELANE, SLPI and their downstream molecules in pulp cells play an important role in oral complications in SCN patients. In addition, pulp cells with diminished neutrophil elastase and SLPI are highly responsive to inflammation.
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Affiliation(s)
- Kanokwan Sriwattanapong
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Noppadol Sa-Ard-Iam
- Center of Excellence in Periodontal Disease and Dental Implant, Immunology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Lawan Boonprakong
- Oral Biology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Keskanya Subbalekha
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorapat Trachoo
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Narissara Suratannon
- Pediatric Allergy & Clinical Immunology Research Unit, Division of Allergy and Immunology, Department of Pediatrics, Faculty of Medicine, King Chulalongkorn Memorial Hospital, Chulalongkorn University, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Bangkok, Thailand
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26
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Shotelersuk V, Wichadakul D, Ngamphiw C, Srichomthong C, Phokaew C, Wilantho A, Pakchuen S, Nakhonsri V, Shaw PJ, Wasitthankasem R, Piriyapongsa J, Wangkumhang P, Assawapitaksakul A, Chetruengchai W, Lapphra K, Khuninthong A, Makarawate P, Suphapeetiporn K, Mahasirimongkol S, Satproedprai N, Porntaveetus T, Pisitkun P, Praphanphoj V, Kantaputra P, Tassaneeyakul W, Tongsima S. The Thai reference exome (T-REx) variant database. Clin Genet 2021; 100:703-712. [PMID: 34496037 DOI: 10.1111/cge.14060] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 08/31/2021] [Accepted: 09/02/2021] [Indexed: 01/19/2023]
Abstract
To maximize the potential of genomics in medicine, it is essential to establish databases of genomic variants for ethno-geographic groups that can be used for filtering and prioritizing candidate pathogenic variants. Populations with non-European ancestry are poorly represented among current genomic variant databases. Here, we report the first high-density survey of genomic variants for the Thai population, the Thai Reference Exome (T-REx) variant database. T-REx comprises exome sequencing data of 1092 unrelated Thai individuals. The targeted exome regions common among four capture platforms cover 30.04 Mbp on autosomes and chromosome X. 345 681 short variants (18.27% of which are novel) and 34 907 copy number variations were found. Principal component analysis on 38 469 single nucleotide variants present worldwide showed that the Thai population is most genetically similar to East and Southeast Asian populations. Moreover, unsupervised clustering revealed six Thai subpopulations consistent with the evidence of gene flow from neighboring populations. The prevalence of common pathogenic variants in T-REx was investigated in detail, which revealed subpopulation-specific patterns, in particular variants associated with erythrocyte disorders such as the HbE variant in HBB and the Viangchan variant in G6PD. T-REx serves as a pivotal addition to the current databases for genomic medicine.
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Affiliation(s)
- Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, the Thai Red Cross Society, Bangkok, Thailand
| | - Duangdao Wichadakul
- Department of Computer Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
| | - Chumpol Ngamphiw
- National Biobank of Thailand, National Science and Technology Development Agency, Pathum Thani, Thailand
| | - Chalurmpon Srichomthong
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, the Thai Red Cross Society, Bangkok, Thailand
| | - Chureerat Phokaew
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, the Thai Red Cross Society, Bangkok, Thailand
| | - Alisa Wilantho
- National Biobank of Thailand, National Science and Technology Development Agency, Pathum Thani, Thailand
| | - Sujiraporn Pakchuen
- National Biobank of Thailand, National Science and Technology Development Agency, Pathum Thani, Thailand
| | - Vorthunju Nakhonsri
- National Biobank of Thailand, National Science and Technology Development Agency, Pathum Thani, Thailand.,Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Philip James Shaw
- National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency, Pathum Thani, Thailand
| | - Rujipat Wasitthankasem
- National Biobank of Thailand, National Science and Technology Development Agency, Pathum Thani, Thailand
| | - Jittima Piriyapongsa
- National Biobank of Thailand, National Science and Technology Development Agency, Pathum Thani, Thailand
| | - Pongsakorn Wangkumhang
- National Biobank of Thailand, National Science and Technology Development Agency, Pathum Thani, Thailand
| | - Adjima Assawapitaksakul
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, the Thai Red Cross Society, Bangkok, Thailand
| | - Wanna Chetruengchai
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, the Thai Red Cross Society, Bangkok, Thailand
| | - Keswadee Lapphra
- Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Athiphat Khuninthong
- National Biobank of Thailand, National Science and Technology Development Agency, Pathum Thani, Thailand
| | | | - Kanya Suphapeetiporn
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, the Thai Red Cross Society, Bangkok, Thailand
| | - Surakameth Mahasirimongkol
- Genomic Medicine Center, Division of Genomic Medicine and Innovation Support, Department of Medical Sciences, Ministry of Public Health, Nonthaburi, Thailand
| | - Nusara Satproedprai
- Genomic Medicine Center, Division of Genomic Medicine and Innovation Support, Department of Medical Sciences, Ministry of Public Health, Nonthaburi, Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Prapaporn Pisitkun
- Division of Allergy, Immunology, and Rheumatology, Department of Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Verayuth Praphanphoj
- Center for Medical Genetics Research, Rajanukul Institute, Department of Mental Health, Ministry of Public Health Bangkok, Bangkok, Thailand
| | - Piranit Kantaputra
- Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | | | - Sissades Tongsima
- National Biobank of Thailand, National Science and Technology Development Agency, Pathum Thani, Thailand
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27
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Manaspon C, Boonsimma P, Phokaew C, Theerapanon T, Sriwattanapong K, Porntaveetus T, Shotelersuk V. Expanding the genotypic spectrum of PYCR2 and a common ancestry in Thai patients with hypomyelinating leukodystrophy 10. Am J Med Genet A 2021; 185:3068-3073. [PMID: 34037307 DOI: 10.1002/ajmg.a.62365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 04/27/2021] [Accepted: 05/08/2021] [Indexed: 11/10/2022]
Abstract
PYCR2 pathogenic variants lead to an autosomal recessive hypomyelinating leukodystrophy 10 (HLD10), characterized by global developmental delay, microcephaly, facial dysmorphism, movement disorder, and hypomyelination. This study identified the first two unrelated Thai patients with HLD10. Patient 1 harbored the novel compound heterozygous variants, c.257T>G (p.Val86Gly) and c.400G>A (p.Val134Met), whereas patient 2 possessed the homozygous variant, c.400G>A (p.Val134Met), in PYCR2. Haplotype analysis revealed that the two families' members shared a 2.3 Mb region covering the c.400G>A variant, indicating a common ancestry. The variant was estimated to age 1450 years ago. Since the c.400G>A was detected in three out of four mutant alleles and with a common ancestry, this variant might be common in Thai patients. We also reviewed the phenotype and genotype of all 35 previously reported PYCR2 patients and found that majorities of cases were homozygous with a consanguineous family history, except patient 1 and another reported case who were compound heterozygous. All patients had microcephaly and developmental delay. Hypotonia and peripheral spasticity were common. Hypomyelination or delayed myelination was a typical radiographic feature. Here, we report the first two Thai patients with HLD10 with the novel PYCR2 variants expanding the genotypic spectrum and suggest that the c.400G>A might be a common mutation in Thai patients.
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Affiliation(s)
- Chawan Manaspon
- Biomedical Engineering Institute, Chiang Mai University, Chiang Mai, Thailand.,Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Ponghatai Boonsimma
- Division of Medical Genetics and Metabolism, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Chureerat Phokaew
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
| | - Thanakorn Theerapanon
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Kanokwan Sriwattanapong
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
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28
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Manaspon C, Jongwannasiri C, Chumprasert S, Sa-Ard-Iam N, Mahanonda R, Pavasant P, Porntaveetus T, Osathanon T. Human dental pulp stem cell responses to different dental pulp capping materials. BMC Oral Health 2021; 21:209. [PMID: 33902558 PMCID: PMC8074430 DOI: 10.1186/s12903-021-01544-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 04/01/2021] [Indexed: 12/28/2022] Open
Abstract
Background Direct pulp capping is a vital pulp therapy for a pin-point dental pulp exposure. Applying a pulp capping material leads to the formation of a dentin bridge and protects pulp vitality. The aim of this study was to compare the effects of four dental materials, DyCal®, ProRoot® MTA, Biodentine™, and TheraCal™ LC in vitro. Methods Human dental pulp stem cells (hDPs) were isolated and characterized. Extraction medium was prepared from the different pulp capping materials. The hDP cytotoxicity, proliferation, and migration were examined. The odonto/osteogenic differentiation was determined by alkaline phosphatase, Von Kossa, and alizarin red s staining. Osteogenic marker gene expression was evaluated using real-time polymerase chain reaction. Results ProRoot® MTA and Biodentine™ generated less cytotoxicity than DyCal® and TheraCal™ LC, which were highly toxic. The hDPs proliferated when cultured with the ProRoot® MTA and Biodentine™ extraction media. The ProRoot® MTA and Biodentine™ extraction medium induced greater cell attachment and spreading. Moreover, the hDPs cultured in the ProRoot® MTA or Biodentine™ extraction medium migrated in a similar manner to those in serum-free medium, while a marked reduction in cell migration was observed in the cells cultured in DyCal® and TheraCal™ LC extraction media. Improved mineralization was detected in hDPs maintained in ProRoot® MTA or Biodentine™ extraction medium compared with those in serum-free medium. Conclusion This study demonstrates the favorable in vitro biocompatibility and bioactive properties of ProRoot® MTA and Biodentine™ on hDPs, suggesting their superior regenerative potential compared with DyCal® and TheraCal™. Supplementary Information The online version contains supplementary material available at 10.1186/s12903-021-01544-w.
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Affiliation(s)
- Chawan Manaspon
- Dental Stem Cell Biology Research Unit, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand.,Biomedical Engineering Institute, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Chavin Jongwannasiri
- Faculty of Medicine and Public Health, HRH Princess Chulabhorn College of Medical Science, Chulabhorn Royal Academy, Bangkok, 10210, Thailand
| | - Sujin Chumprasert
- Oral Biology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Noppadol Sa-Ard-Iam
- Immunology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Rangsini Mahanonda
- Immunology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand.,Department of Periodontology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Prasit Pavasant
- Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thanaphum Osathanon
- Dental Stem Cell Biology Research Unit, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand. .,Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand.
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29
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Caengprasath N, Theerapanon T, Porntaveetus T, Shotelersuk V. MBTPS2, a membrane bound protease, underlying several distinct skin and bone disorders. J Transl Med 2021; 19:114. [PMID: 33743732 PMCID: PMC7981912 DOI: 10.1186/s12967-021-02779-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Accepted: 03/08/2021] [Indexed: 12/27/2022] Open
Abstract
The MBTPS2 gene on the X-chromosome encodes the membrane-bound transcription factor protease, site-2 (MBTPS2) or site-2 protease (S2P) which cleaves and activates several signaling and regulatory proteins from the membrane. The MBTPS2 is critical for a myriad of cellular processes, ranging from the regulation of cholesterol homeostasis to unfolded protein responses. While its functional role has become much clearer in the recent years, how mutations in the MBTPS2 gene lead to several human disorders with different phenotypes including Ichthyosis Follicularis, Atrichia and Photophobia syndrome (IFAP) with or without BRESHECK syndrome, Keratosis Follicularis Spinulosa Decalvans (KFSD), Olmsted syndrome, and Osteogenesis Imperfecta type XIX remains obscure. This review presents the biological role of MBTPS2 in development, summarizes its mutations and implicated disorders, and discusses outstanding unanswered questions.
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Affiliation(s)
- Natarin Caengprasath
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Thanakorn Theerapanon
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
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30
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Sriwattanapong K, Rojnueangnit K, Theerapanon T, Srichomthong C, Porntaveetus T, Shotelersuk V. Compound Heterozygosity for a Novel Frameshift Variant Causing Fatal Infantile Liver Failure and Genotype-Phenotype Correlation of POLG c.3286C>T Variant. Int J Neonatal Screen 2021; 7:ijns7010009. [PMID: 33562887 PMCID: PMC7930966 DOI: 10.3390/ijns7010009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 01/24/2021] [Accepted: 02/02/2021] [Indexed: 11/16/2022] Open
Abstract
A variant in the POLG gene is the leading cause of a heterogeneous group of mitochondrial disorders. No definitive treatment is currently available. Prenatal and newborn screening have the potential to improve clinical outcome of patients affected with POLG-related disorders. We reported a 4-month-old infant who presented with developmental delay, fever, and diarrhea. Within two weeks after hospital admission, the patient developed hepatic failure and died. Liver necropsy demonstrated an extensive loss of hepatocytes and bile duct proliferations. Trio-whole exome sequencing identified that the patient was compound heterozygous for a novel frameshift variant c.3102delG (p.Lys1035Serfs*59) and a common variant c.3286C>T (p.Arg1096Cys) in POLG (NM_002693.3) inherited from the mother and father, respectively. The c.3102delG (p.Lys1035Serfs*59) was a null variant and classified as pathogenic according to the American College of Medical Genetics and Genomics Standards and Guidelines. Prenatal genetic screenings using rapid whole exome sequencing successfully detected the heterozygous c.3286C>T variant in the following pregnancy and the normal alleles in the other one. Both children had been healthy. We reviewed all 34 cases identified with the POLG c.3286C>T variant and found that all 15 compound heterozygous cases had two missense variants except our patient who had the truncating variant and showed the earliest disease onset, rapid deterioration, and the youngest death. All homozygous cases had disease onset before age 2 and developed seizure. Here, we report a novel POLG variant expanding the genotypic spectrum, demonstrate the successful use of exome sequencing for prenatal and neonatal screenings of POLG-related disorders, and show the genotype-phenotype correlation of the common c.3286C>T variant.
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Affiliation(s)
- Kanokwan Sriwattanapong
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand; (K.S.); (T.T.)
| | - Kitiwan Rojnueangnit
- Department of Pediatrics, Faculty of Medicine, Thammasat University, Pathumthani 12120, Thailand;
| | - Thanakorn Theerapanon
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand; (K.S.); (T.T.)
| | - Chalurmpon Srichomthong
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand; (C.S.); (V.S.)
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok 10330, Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand; (K.S.); (T.T.)
- Correspondence: ; Tel.: +66-02218-8695
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand; (C.S.); (V.S.)
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok 10330, Thailand
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Sriwattanapong K, Nitayavardhana I, Theerapanon T, Thaweesapphithak S, Chantarawaratit PO, Garuyakich R, Phokaew C, Porntaveetus T, Shotelersuk V. Age-related dental phenotypes and tooth characteristics of FAM83H-associated hypocalcified amelogenesis imperfecta. Oral Dis 2021; 28:734-744. [PMID: 33486840 DOI: 10.1111/odi.13780] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 01/06/2021] [Accepted: 01/18/2021] [Indexed: 12/18/2022]
Abstract
OBJECTIVES Autosomal-dominant hypocalcified amelogenesis imperfecta (ADHCAI) shows phenotypic heterogeneity. Our aim was to characterise the ADHCAI phenotypes, tooth properties and genotypes. METHODS Three unrelated ADHCAI probands and seven additional affected members of the three families were recruited. Mutations were identified by exome and Sanger sequencing, and haplotypes by SNP array. Tooth colour, roughness, density, nanohardness, minerals and ultrastructure were investigated. RESULTS Ten participants were heterozygous for the FAM83H mutation c.1387C>T (p.Gln463*). All shared a 3.43 Mbp region on chromosome 8q24.3 encompassing the FAM83H variant, indicating a common ancestry. The c.1387C>T was estimated to be 23.8 generations or 600 years. The FAM83H enamel had higher roughness and lower lightness, density, nanohardness, and calcium and phosphorus levels than controls. Blunted enamel rods, wide interrod spaces and disorganised dentinoenamel junctions were observed. Evaluating the patients with the same mutation and reviewing others with different mutations in FAM83H revealed that the FAM83H heterogeneous phenotypes are age-influenced. Tooth colour and surface texture change with ageing. CONCLUSIONS FAM83H enamel demonstrated decreased lightness, density, hardness, calcium, phosphorus and defective ultrastructure. We have identified that the phenotypic variation in FAM83H-associated ADHCAI is age-related. Awareness of the correlation between age and clinical features of FAM83H-ADHCAI can help dentists make an accurate diagnosis.
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Affiliation(s)
- Kanokwan Sriwattanapong
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Issree Nitayavardhana
- Geriatric Dentistry and Special Patients Care Clinic, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thanakorn Theerapanon
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Sermporn Thaweesapphithak
- Center of Excellence in Regenerative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | | | - Rakkierti Garuyakich
- Geriatric Dentistry and Special Patients Care Clinic, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Chureerat Phokaew
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.,Geriatric Dentistry and Special Patients Care Clinic, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
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Kanchanasevee C, Sriwattanapong K, Theerapanon T, Thaweesapphithak S, Chetruengchai W, Porntaveetus T, Shotelersuk V. Phenotypic and Genotypic Features of Thai Patients With Nonsyndromic Tooth Agenesis and WNT10A Variants. Front Physiol 2020; 11:573214. [PMID: 33329022 PMCID: PMC7710930 DOI: 10.3389/fphys.2020.573214] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 10/27/2020] [Indexed: 11/18/2022] Open
Abstract
Tooth agenesis is one of the most common orodental anomalies that demonstrate phenotypic and genotypic heterogeneity with a prevalence of 2.5%–7%. Mutations in WNT10A have been proposed to be the most common cause of nonsyndromic tooth agenesis (NSTA). The aim of this study was to characterize the dental features and genetic variants of NSTA in a Thai population. We recruited 13 unrelated patients with NSTA who attended the Faculty of Dentistry, Chulalongkorn University, Thailand, from 2017 to 2019. All 13 underwent whole exome sequencing that identified likely pathogenic genetic variants, all in WNT10A, in five patients. All five patients had second premolar agenesis, while three also had absent or peg-shaped upper lateral incisors. Patient 1 possessed a novel heterozygous duplication, c.916_918dupAAC (p.Asn306dup) in WNT10A. Patients 2 and 3 harbored a heterozygous and homozygous c.637G > A (p.Gly213Ser) in WNT10A, respectively. Patients 4 possessed a heterozygous c.511C > T (p.Arg171Cys) in WNT10A. Patient 5 harbored a homozygous c.511C > T (p.Arg171Cys) in WNT10A and a novel heterozygous c.413A > T (p.Asn138Ile) in EDARADD, suggesting digenic inheritance. We recruited another 18 family members of these five patients. Out of 23 participants, homozygous WNT10A variants were identified in 2 patients and heterozygous variants in 17 individuals. Both homozygous patients had NSTA. Eight out of 17 heterozygous individuals (8/17) had NSTA or a peg-shaped lateral incisor, indicating a 47% penetrance of the heterozygous variants or 53% (10/19) penetrance of either homozygous or heterozygous variants in WNT10A. The frequencies of the c.511C > T in our in-house 1,876 Thai exome database, Asian populations, and non-Asian populations were 0.016, 0.005–0.033, and 0.001, respectively; while those of the c.637G > A were 0.016, 0.004–0.029, and 0.000, respectively. In conclusion, our study reports two novel variants with one each in WNT10A and EDARADD, expanding the genotypic spectra of NSTA. Second premolar agenesis is a common phenotype in affected individuals with variants in WNT10A; however, its penetrance is incomplete. Lastly, the different frequencies of WNT10A variants, c.511C > T and c.637G > A, in diverse populations might contribute to the prevalence range of NSTA between continents.
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Affiliation(s)
- Charinya Kanchanasevee
- Geriatric Dentistry and Special Patients Care International Program, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Kanokwan Sriwattanapong
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thanakorn Theerapanon
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Sermporn Thaweesapphithak
- Center of Excellence for Regenerative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Wanna Chetruengchai
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, Thailand
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Intarak N, Budsamongkol T, Theerapanon T, Chanamuangkon T, Srijunbarl A, Boonprakong L, Porntaveetus T, Shotelersuk V. Tooth ultrastructure of a novel COL1A2 mutation expanding its genotypic and phenotypic spectra. Oral Dis 2020; 27:1257-1267. [PMID: 32989910 DOI: 10.1111/odi.13657] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 09/09/2020] [Accepted: 09/18/2020] [Indexed: 12/15/2022]
Abstract
OBJECTIVES To investigate tooth ultrastructure and mutation of two patients in a family affected with osteogenesis imperfecta (OI) type IV and dentinogenesis imperfecta (DGI). METHODS Mutations were detected by whole exome and Sanger sequencing. The permanent second molar obtained from the proband (DGI1) and the primary first molar from his affected son (DGI2) were studied for their color, roughness, mineral density, hardness, elastic modulus, mineral content, and ultrastructure, compared to the controls. RESULTS Two novel missense COL1A2 variants, c.752C > T (p.Ser251Phe) and c.758G > T (p.Gly253Val), were identified in both patients. The c.758G > T was predicted to be the causative mutation. Pulp cavities of DGI1 (permanent teeth) were obliterated while those of DGI2 (primary teeth) were wide. The patients' teeth had darker and redder colors; reduced dentin hardness; decreased, disorganized, and scattered dentinal tubules and collagen fibers; and irregular dentinoenamel junction (DEJ), compared to controls. Lacunae-like structures were present in DGI2. CONCLUSIONS We reported the novel causative mutation, c.758G > T (p.Gly253Val), in COL1A2 for OI type IV and DGI. The DGI dentin demonstrated inferior mechanical property and ultrastructure, suggesting severe disturbances of dentin formation. These could contribute to fragility and prone to infection of DGI teeth. This study expands phenotypic and genotypic spectra of COL1A2 mutations.
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Affiliation(s)
- Narin Intarak
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thunyaporn Budsamongkol
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.,Geriatric Dentistry and Special Patients Care Program, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thanakorn Theerapanon
- Excellence Center in Regenerative Dentistry, Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Theerapat Chanamuangkon
- Biomaterial Testing Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Anucharte Srijunbarl
- Dental Materials R&D Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Lawan Boonprakong
- Oral Biology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, the Thai Red Cross Society, Bangkok, Thailand
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Rojnueangnit K, Maneechai P, Thaweekul P, Piriyanon P, Khositseth S, Ittiwut C, Chetruengchai W, Kamolvisit W, Theerapanon T, Suphapeetiporn K, Porntaveetus T, Shotelersuk V. Expanding phenotypic and mutational spectra of mitochondrial HMG-CoA synthase deficiency. Eur J Med Genet 2020; 63:104086. [PMID: 33045405 DOI: 10.1016/j.ejmg.2020.104086] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 09/09/2020] [Accepted: 10/04/2020] [Indexed: 11/29/2022]
Abstract
Mitochondrial 3-hydroxy-3 methylglutaryl-CoA synthase-2 deficiency (HMGCS2D) is a rare autosomal recessive inborn error of hepatic ketogenesis, caused by mutations in HMGCS2. As its clinical and laboratory manifestations resemble many other metabolic disorders, HMGCS2D definite diagnosis presents a challenge, frequently requiring molecular tests. Only 26 patients with HMGCS2 mutations have been previously described, and this study reports the first two unrelated Thai patients, a 9-month-old male and an 8-month-old female, with HMGCS2D. During acute episodes, steatorrhea and dyslipidemia occurred, both previously unreported. Increased serum levels of triglycerides, very low density lipoproteins (VLDL), and low density lipoproteins (LDL), along with a decreased serum level of HDL were found. Both patients had hypophosphatemic encephalopathy, and the female had metabolic acidosis without hypoglycemia. Trio whole-exome sequencing (WES) revealed that the male harbored two HMGCS2 mutations, a novel c.1480C>T (p.Arg494*) and a previously reported c.1502G>C (p.Arg501Pro), while the female was compound heterozygous for the c.1502G>C (p.Arg501Pro) and a previously reported mutation, c.520T>C (p.Phe174Leu). Interestingly, c.1502G>C (p.Arg501Pro) was not only found in both of our patients but also detected heterozygously in 9 out of 1081 unrelated individuals (allele frequency of 9/2162; 0.42%) in our in-house Thai exome database. Discovery of this common mutation suggests there could be about 14 babies with HMGCS2D within 800,000 newborns in Thailand annually. Therefore, awareness of HMGCS2D among medical personnel in Thailand should be raised.
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Affiliation(s)
- Kitiwan Rojnueangnit
- Department of Pediatrics, Faculty of Medicine, Thammasat University, Pathumthani, 12120, Thailand
| | - Parisa Maneechai
- Department of Pediatrics, Faculty of Medicine, Thammasat University, Pathumthani, 12120, Thailand
| | - Patcharapa Thaweekul
- Department of Pediatrics, Faculty of Medicine, Thammasat University, Pathumthani, 12120, Thailand
| | - Punnapat Piriyanon
- Department of Pediatrics, Faculty of Medicine, Thammasat University, Pathumthani, 12120, Thailand
| | - Sookkasem Khositseth
- Department of Pediatrics, Faculty of Medicine, Thammasat University, Pathumthani, 12120, Thailand
| | - Chupong Ittiwut
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Wanna Chetruengchai
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Wuttichart Kamolvisit
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Thanakorn Theerapanon
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Kanya Suphapeetiporn
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
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35
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Nitayavardhana I, Theerapanon T, Srichomthong C, Piwluang S, Wichadakul D, Porntaveetus T, Shotelersuk V. Four novel mutations of FAM20A in amelogenesis imperfecta type IG and review of literature for its genotype and phenotype spectra. Mol Genet Genomics 2020; 295:923-931. [PMID: 32246227 DOI: 10.1007/s00438-020-01668-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 03/18/2020] [Indexed: 02/07/2023]
Abstract
Amelogenesis imperfecta type IG (AI1G) is caused by mutations in FAM20A. Genotypic and phenotypic features of AI1G are diverse and their full spectra remain to be characterized. The aim of this study was to identify and summarize variants in FAM20A in a broad population of patients with AI1G. We identified a Thai female (Pt-1) and a Saudi male (Pt-2) affected with AI1G. Both had hypoplastic enamel, gingival hyperplasia, and intrapulpal calcification. Pt-1 also had rapidly progressive embedding of unerupted teeth, early eruption of permanent teeth, and spontaneous dental infection. Uniquely, Pt-2 had all permanent teeth erupted which was uncommon in AI1G patients. Whole exome sequencing (WES) identified that Pt-1 was heterozygous for FAM20A, c.758A > G (p.Tyr253Cys), inherited from her father. The mutation on maternal allele was not detected by WES. Pt-2 possessed compound heterozygous mutations, c.1248dupG (p.Phe417Valfs*7); c.1081C > T (p.Arg361Cys) in FAM20A. Array comparative genomic hybridization (aCGH), cDNA sequencing, and whole genome sequencing successfully identified 7531 bp deletion on Pt-1's maternal allele. This was the largest FAM20A deletion ever found. A review of all 70 patients from 50 independent families with AI1G (including two families in this study) showed that the penetrance of hypoplastic enamel and gingival hyperplasia was complete. Unerupted permanent teeth were found in all 70 patients except Pt-2. Exons 1 and 11 were mutation-prone. Most mutations were frameshift. Certain variants showed founder effect. To conclude, this study reviews and expands phenotypic and genotypic spectra of AI1G. A large deletion missed by WES can be detected by WGS. Hypoplastic enamel, gingival hyperplasia, and unerupted permanent teeth prompt genetic testing of FAM20A. Screening of nephrocalcinosis, early removal of embedded teeth, and monitoring of dental infection are recommended.
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Affiliation(s)
- Issree Nitayavardhana
- Geriatric Dentistry and Special Patients Care International Program, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thanakorn Theerapanon
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand.,Center of Excellence for Regenerative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Chalurmpon Srichomthong
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Sakkayaphab Piwluang
- Department of Computer Engineering, Master of Science in Software Engineering Program, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Duangdao Wichadakul
- Chulalongkorn Big Data Analytics and IoT Center (CUBIC), Department of Computer Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand.,Center of Excellence in Systems Biology, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.,Research Group on Applied Computer Engineering Technology for Medicine and Healthcare, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thantrira Porntaveetus
- Geriatric Dentistry and Special Patients Care International Program, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand. .,Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
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36
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Shotelersuk V, Kamolvisit W, Rojvachiranonda N, Suphapeetiporn K, Porntaveetus T, Shotelersuk V. Severe craniofrontonasal syndrome in a male patient mosaic for a novel nonsense mutation in EFNB1. Eur J Med Genet 2020; 63:103924. [PMID: 32240825 DOI: 10.1016/j.ejmg.2020.103924] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 03/05/2020] [Accepted: 03/28/2020] [Indexed: 11/30/2022]
Abstract
Craniofrontonasal syndrome (CFNS) is an X-linked disorder caused by mutations in EFNB1. Uncommonly and paradoxically, female patients with CFNS exhibit significantly more severe symptoms than male patients. This is explained by "cellular interference". Nevertheless, there have been a few reports of male patients severely affected with CFNS due to postzygotic mosaicism. Here, we demonstrated a male patient with severe CFNS. Whole exome sequencing showed that he harbored both wild type and nonsense mutation, c.253C > T (p.Gln85Ter), in the EFNB1 gene. Sanger sequencing of his leukocytes, buccal swab, and hair root revealed a variable level of mosaicism. This nonsense mutation is absent in his parents and has never been previously reported. Our findings expand the mutational spectrum of EFNB1 and substantiates that males with severely affected CFNS are mosaic.
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Affiliation(s)
- Varote Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Wuttichart Kamolvisit
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Nond Rojvachiranonda
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Kanya Suphapeetiporn
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Medical Genomics Cluster, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
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Udomchaiprasertkul W, Kuptanon C, Porntaveetus T, Shotelersuk V. A family with homozygous and heterozygous p.Gly337Ser mutations in COL1A2. Eur J Med Genet 2020; 63:103896. [PMID: 32081708 DOI: 10.1016/j.ejmg.2020.103896] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 01/31/2020] [Accepted: 02/16/2020] [Indexed: 01/09/2023]
Abstract
Osteogenesis imperfecta (OI) is commonly caused by monoallelic mutations in COL1A1 or COL1A2. Biallelic mutations are extremely rare. Only five previous reports have identified seven OI patients with homozygous mutations in COL1A2. OI is a genetically and phenotypically heterogeneous disorder which challenges an establishment of genotype-phenotype correlation. Notably, more than thirty patients with OI possess the heterozygous mutation, p.Gly337Ser, in COL1A2. Their clinical severity ranges from mild OI type I to severe types III and IV. Here, we report a 17-year-old Thai female with recurrent bone fractures, short stature, blue sclerae, triangular face, missing teeth, dentinogenesis imperfecta (DI), skeletal deformities, and scoliosis. She was diagnosed with OI type III. Her parents were second-cousin-once-removed. The father was a professional Thai boxer. Both had normal bone mineral density, no history of bone fractures, and only teeth problems. They were diagnosed with DI without OI. Whole exome sequencing identified that the proband harbored the homozygous mutation, c.1009G > A (p.Gly337Ser), in exon 19 of COL1A2 while her parents were heterozygous for this mutation. This study reports the eighth child with OI and the homozygous mutation in COL1A2; and the first two individuals with the heterozygous p.Gly337Ser mutation in COL1A2 causing an isolated DI without OI.
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Affiliation(s)
- Wandee Udomchaiprasertkul
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand; Interdisciplinary Program of Biomedical Sciences, Graduate School, Chulalongkorn University, Bangkok, 10330, Thailand; Molecular Biology and Genomic Research Laboratory, Division of Research and International Relations, HRH Princess Chulabhorn College of Medical Science, Chulabhorn Royal Academy, Bangkok, 10900, Thailand
| | - Chulaluck Kuptanon
- Department of Pediatrics, Queen Sirikit National Institute of Child Health, Bangkok, 10400, Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
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Manaspon C, Boonprakong L, Porntaveetus T, Osathanon T. Preparation and characterization of Jagged1-bound fibrinogen-based microspheres and their cytotoxicity against human dental pulp cells. J Biomater Appl 2020; 34:1105-1113. [PMID: 31903836 DOI: 10.1177/0885328219898579] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Surface immobilization of Jagged1 promotes odonto/osteogenic differentiation in human dental pulp cells. On the contrary, soluble Jagged1 fails to activate target gene expression of Notch signaling which is important for differentiation of human dental pulp cells. Hence, Jagged1 delivery system is indeed required for transportation of immobilized Jagged1 to promote odontogenic differentiation of human dental pulp cells in vivo. The present study described the preparation and characterization of Jagged1-bound fibrinogen-based microspheres. Water-in-oil emulsion technique was employed to prepare fibrinogen microspheres and thrombin cross-linked fibrinogen microspheres. The average size of fibrinogen microspheres and thrombin cross-linked fibrinogen microspheres was 213.9 ± 35.9 and 199.9 ± 41.9 µm, respectively. These microspheres did not alter the human dental pulp cells’ cell viability. Human dental pulp cells were able to attach and spread on these microspheres. Jagged1 was conjugated on microspheres using 1-ethyl-3-(3-dimethylamino) propyl carbodiimide/N-hydroxysuccinimide. Binding capacity of Jagged1 on both fibrinogen microspheres and thrombin cross-linked fibrinogen microspheres ranged from 25.8 ± 6.0 to 35.6 ± 9.1%. There was no significant difference in the size of microspheres between before and after Jagged1 conjugation process. In conclusion, fibrinogen microspheres and thrombin cross-linked fibrinogen microspheres could be utilized as the alternative biomaterials for Jagged1 delivery for future biomedical application.
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Affiliation(s)
- Chawan Manaspon
- Center of Excellence for Regenerative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Lawan Boonprakong
- Oral Biology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Genomic and Precision Densitry Research Unit, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thanaphum Osathanon
- Center of Excellence for Regenerative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
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Hemwong N, Phokaew C, Srichomthong C, Tongkobpetch S, Srilanchakon K, Supornsilchai V, Suphapeetiporn K, Porntaveetus T, Shotelersuk V. A patient with combined pituitary hormone deficiency and osteogenesis imperfecta associated with mutations in LHX4 and COL1A2. J Adv Res 2019; 21:121-127. [PMID: 32071780 PMCID: PMC7015471 DOI: 10.1016/j.jare.2019.10.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 10/13/2019] [Accepted: 10/15/2019] [Indexed: 11/30/2022] Open
Abstract
The mutations in two different genes should be sought in the patients with complex phenotypes. The c.1531G>T in COL1A2 leading to OI and c.364C>T (p.R122W) in LHX4 to CPHD were found in a Thai boy. The incomplete penetrance and loss-of-function are the features of p.R122W mutation in LHX4. The mutation spectra of COL1A2 and LHX4 and pathomechanism of LHX4 are expanded.
Genetic disorders have been shown to co-occur in individual patient. A Thai boy with features of osteogenesis imperfecta (OI) and combined pituitary hormone deficiency (CPHD) was identified. The causative mutations were investigated by whole exome and Sanger sequencing. Pathogenicity and pathomechanism of the variants were studied by luciferase assay. The proband was found to harbor a novel de novo heterozygous missense mutation, c.1531G > T (p.G511C), in COL1A2 leading to OI and a heterozygous missense variant, c.364C > T (p.R122W), in LHX4. The LHX4 p.R122W has never been reported to cause CPHD. The variant was predicted to be deleterious and found in the highly conserved LIM2 domain of LHX4. The luciferase assays revealed that the p.R122W was unable to activate POU1F1, GH1, and TSHB promoters, validating its pathogenic effect in CPHD. Moreover, the variant did not alter the function of wild-type LHX4, indicating its hypomorphic pathomechanism. In conclusion, the novel de novo heterozygous p.G511C mutation in COL1A2 and the heterozygous pathogenic p.R122W mutation in LHX4 were demonstrated in a patient with OI and CPHD. This study proposes that the mutations in two different genes should be sought in the patients with clinical features unable to be explained by a mutation in one gene.
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Affiliation(s)
- Nalinee Hemwong
- Medical Sciences Program, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.,Center of Excellence for Regenerative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Chureerat Phokaew
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Chalurmpon Srichomthong
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Siraprapa Tongkobpetch
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Khomsak Srilanchakon
- Division of Endocrinology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Vichit Supornsilchai
- Division of Endocrinology, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Kanya Suphapeetiporn
- Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.,Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, 10330, Thailand
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40
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Nowwarote N, Osathanon T, Kanjana K, Theerapanon T, Porntaveetus T, Shotelersuk V. Decreased osteogenic activity and mineralization of alveolar bone cells from a patient with amelogenesis imperfecta and FAM83H 1261G>T mutation. Genes Dis 2019; 6:391-397. [PMID: 31832519 PMCID: PMC6889029 DOI: 10.1016/j.gendis.2019.07.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 07/10/2019] [Accepted: 07/18/2019] [Indexed: 12/27/2022] Open
Abstract
FAM83H mutations lead to autosomal dominant hypocalcified amelogenesis imperfecta (ADHCAI). However, the biological role of FAM83H remains unclear. The present study aimed to characterize the alveolar bone cells isolated from a patient with ADHCAI having the mutation, c.1261G > T, p.E421*, in FAM83H. We showed that FAM83H mutant cells had proliferation ability and morphology similar to the controls. The F-actin staining revealed that FAM83H mutant cells were remained in the earlier stages of cell spreading compared to the controls at 30 min, but their spreading was advanced comparable to the controls at later stages. After osteogenic induction, a significant decrease in mRNA levels of RUNX2 and ALP was observed in FAM83H mutant cells at day 7 compared with day 3 while their expressions were increased in the controls. The OPN levels in FAM83H mutant cells were not significantly changed at day 7 compared to day 3 while the controls showed a significant increase. After 14 days, the mineral deposition of FAM83H mutant cells was slightly lower than that of the controls. In conclusion, we identify that FAM83H bone cells have lower expression of osteogenic marker genes and mineralization while they maintain their morphology, proliferation, and spreading. Consistent with previous studies in the ameloblasts and periodontal ligamental cells, these evidences propose that FAM83H influences osteogenic differentiation across different cell types in oral cavity.
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Affiliation(s)
- Nunthawan Nowwarote
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thanaphum Osathanon
- Center of Excellence for Regenerative Dentistry, Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Kiattipan Kanjana
- Center of Excellence for Regenerative Dentistry, Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thanakorn Theerapanon
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
- Corresponding author. Genomics and Precision Dentistry Research Unit, Faculty of Dentistry, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand. Fax: +662 218 8691.
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, 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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Manaspon C, Thaweesapphithak S, Osathanon T, Suphapeetiporn K, Porntaveetus T, Shotelersuk V. A novel de novo mutation substantiates KDF1 as a gene causing ectodermal dysplasia. Br J Dermatol 2019; 181:419-420. [PMID: 30977908 DOI: 10.1111/bjd.18007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- C Manaspon
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - S Thaweesapphithak
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - T Osathanon
- Department of Anatomy, Center of Excellence for Regenerative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - K Suphapeetiporn
- Center of Excellence for Medical Genomics, 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
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - V Shotelersuk
- Center of Excellence for Medical Genomics, 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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Meguro F, Porntaveetus T, Kawasaki M, Kawasaki K, Yamada A, Kakihara Y, Saeki M, Tabeta K, Kessler JA, Maeda T, Ohazama A. Bmp signaling in molar cusp formation. Gene Expr Patterns 2019; 32:67-71. [PMID: 30980961 DOI: 10.1016/j.gep.2019.04.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 04/07/2019] [Accepted: 04/07/2019] [Indexed: 01/17/2023]
Abstract
Tooth cusp is a crucial structure, since the shape of the molar tooth is determined by number, shape, and size of the cusp. Bone morphogenetic protein (Bmp) signaling is known to play a critical role in tooth development, including in initiation. However, it remains unclear whether Bmp signaling is also involved in cusp formation. To address this question, we examined cusp in two different transgenic mouse lines: mice with overexpression of Bmp4 (K14-Bmp4), and those with Bmp inhibitor, Noggin, (K14-Noggin) under keratin14 (K14) promoter. K14-Noggin mice demonstrated extra cusps, whereas reduced number of cusps was observed in K14-Bmp4 mice. To further understand how Bmps are expressed during cusp formation, we performed whole-mount in situ hybridisation analysis of three major Bmps (Bmp2, Bmp4, and Bmp7) in murine maxillary and mandibular molars from E14.5 to P3. The linear expressions of Bmp2 and Bmp4 were observed in both maxillary and mandibular molars at E14.5. The expression patterns of Bmp2 and Bmp4 became significantly different between the maxillary and mandibular molars at E16.5. At P3, all Bmps were expressed in all the cusp regions of the maxillary molar; however, the patterns differed. All Bmps thus exhibited dynamic temporo-spatial expression during the cusp formation. It could therefore be inferred that Bmp signaling is involved in regulating cusp formation.
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Affiliation(s)
- Fumiya Meguro
- Division of Oral Anatomy, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Maiko Kawasaki
- Division of Oral Anatomy, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Katsushige Kawasaki
- Division of Oral Anatomy, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Akane Yamada
- Division of Oral Anatomy, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yoshito Kakihara
- Division of Dental Pharmacology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8514, Japan
| | - Makio Saeki
- Division of Dental Pharmacology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8514, Japan
| | - Koichi Tabeta
- Division of Periodontology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - John A Kessler
- Department of Neurology, Northwestern University, Feinberg Medical School, Chicago, IL, 60611, USA
| | - Takeyasu Maeda
- (f)Research Center for Advanced Oral Science, Department of Oral Life Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan; Faculty of Dental Medicine, University of Airlangga, Surabaya, Indonesia
| | - Atsushi Ohazama
- Division of Oral Anatomy, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
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Intarak N, Theerapanon T, Thaweesapphithak S, Suphapeetiporn K, Porntaveetus T, Shotelersuk V. Genotype-phenotype correlation and expansion of orodental anomalies in LTBP3-related disorders. Mol Genet Genomics 2019; 294:773-787. [PMID: 30887145 DOI: 10.1007/s00438-019-01547-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Accepted: 03/08/2019] [Indexed: 01/30/2023]
Abstract
The latent transforming growth factor-beta-binding protein 3 (LTBP3), encoding extracellular matrix proteins, plays a role in skeletal formation. Mutations in LTBP3 have been associated with various types of skeletal dysplasia. We aimed to characterize clinical and molecular features of more patients with mutations in the gene, which may help suggest genotype-phenotype correlation. The first two East Asian patients with short stature, heart defects, and orodental anomalies having LTBP3 mutations were identified. Whole exome and Sanger sequencing revealed that the one with a novel heterozygous missense (c.2017G>T, p.Gly673Cys) mutation in LTBP3 had clinical features consistent with acromicric dysplasia (ACMICD). The variant was located in the highly conserved EGF-like calcium-binding domain adjacent to the single reported LTBP3 variant associated with ACMICD. This finding supports that LTBP3 is a disease gene for ACMICD. Another patient with a novel homozygous splice site acceptor (c.1721-2A>G) mutation in LTBP3 was affected with dental anomalies and short stature (DASS). Previously undescribed orodental features included multiple unerupted teeth, high-arched palate, and microstomia found in our patient with ACMICD, and extensive dental infection, condensing osteitis, and deviated alveolar bone formation in our patient with DASS. Our results and comprehensive reviews suggest a genotype-phenotype correlation: biallelic loss-of-function mutations cause DASS, monoallelic missense gain-of-function mutations in the EGF-like domain cause ACMICD, and monoallelic missense gain-of-function mutations with more drastic effects on the protein functions cause geleophysic dysplasia (GPHYSD3). In summary, we expand the phenotypic and genotypic spectra of LTBP3-related disorders, support that LTBP3 is a disease gene for ACMICD, and propose the genotype-phenotype correlation of LTBP3 mutations.
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Affiliation(s)
- Narin Intarak
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thanakorn Theerapanon
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Sermporn Thaweesapphithak
- Center of Excellence for Regenerative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Kanya Suphapeetiporn
- Center of Excellence for Medical Genomics, 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
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, 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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Budsamongkol T, Intarak N, Theerapanon T, Yodsanga S, Porntaveetus T, Shotelersuk V. A novel mutation in COL1A2 leads to osteogenesis imperfecta/Ehlers-Danlos overlap syndrome with brachydactyly. Genes Dis 2019; 6:138-146. [PMID: 31193991 PMCID: PMC6545454 DOI: 10.1016/j.gendis.2019.03.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 03/13/2019] [Indexed: 01/08/2023] Open
Abstract
Osteogenesis imperfecta (OI) is mainly characterized by bone fragility and Ehlers-Danlos syndrome (EDS) by connective tissue defects. Mutations in COL1A1 or COL1A2 can lead to both syndromes. OI/EDS overlap syndrome is mostly caused by helical mutations near the amino-proteinase cleavage site of type I procollagen. In this study, we identified a Thai patient having OI type III, EDS, brachydactyly, and dentinogenesis imperfecta. His dentition showed delayed eruption, early exfoliation, and severe malocclusion. For the first time, ultrastructural analysis of the tooth affected with OI/EDS showed that the tooth had enamel inversion, bone-like dentin, loss of dentinal tubules, and reduction in hardness and elasticity, suggesting severe developmental disturbance. These severe dental defects have never been reported in OI or EDS. Exome sequencing identified a novel de novo heterozygous glycine substitution, c.3296G > A, p.Gly1099Glu, in exon 49 of COL1A2. Three patients with mutations in the exon 49 of COL1A2 were previously reported to have OI with brachydactyly and intracranial hemorrhage. Notably, two of these three patients did not show hyperextensible joints and hypermobile skin, while our patient at the age of 5 years had not developed intracranial hemorrhage. Here, we demonstrate that the novel glycine substitution in the carboxyl region of alpha2(I) collagen triple helix leads to OI/EDS with brachydactyly and severe tooth defects, expanding the genotypic and phenotypic spectra of OI/EDS overlap syndrome.
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Affiliation(s)
- Thunyaporn Budsamongkol
- Geriatric Dentistry and Special Patients Care International Program, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Narin Intarak
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thanakorn Theerapanon
- Center of Excellence for Regenerative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Somchai Yodsanga
- Biomaterial Testing Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Thantrira Porntaveetus
- Geriatric Dentistry and Special Patients Care International Program, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand.,Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, 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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Sinthuwiwat T, Ittiwut C, Porntaveetus T, Shotelersuk V. Female-restricted syndromic intellectual disability in a patient from Thailand. Am J Med Genet A 2019; 179:758-761. [DOI: 10.1002/ajmg.a.61106] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 01/22/2019] [Accepted: 02/04/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Thivaratana Sinthuwiwat
- Interdisciplinary Program of Biomedical Sciences; Graduate School, Chulalongkorn University; Bangkok Thailand
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine; Chulalongkorn University; Bangkok Thailand
- Excellence Center for Medical Genetics; King Chulalongkorn Memorial Hospital, The Thai Red Cross Society; Bangkok Thailand
- Cytogenetics Unit, Research and International Relations Division; HRH Princess Chulabhorn College of Medical Science; Bangkok Thailand
| | - Chupong Ittiwut
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine; Chulalongkorn University; Bangkok Thailand
- Excellence Center for Medical Genetics; King Chulalongkorn Memorial Hospital, The Thai Red Cross Society; Bangkok Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology; Faculty of Dentistry, Chulalongkorn University; Bangkok Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine; Chulalongkorn University; Bangkok Thailand
- Excellence Center for Medical Genetics; King Chulalongkorn Memorial Hospital, The Thai Red Cross Society; Bangkok Thailand
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Kawasaki M, Kawasaki K, Meguro F, Yamada A, Ishikawa R, Porntaveetus T, Blackburn J, Otsuka-Tanaka Y, Saito N, Ota MS, Sharpe PT, Kessler JA, Herz J, Cobourne MT, Maeda T, Ohazama A. Lrp4/Wise regulates palatal rugae development through Turing-type reaction-diffusion mechanisms. PLoS One 2018; 13:e0204126. [PMID: 30235284 PMCID: PMC6147471 DOI: 10.1371/journal.pone.0204126] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Accepted: 09/03/2018] [Indexed: 12/25/2022] Open
Abstract
Periodic patterning of iterative structures is diverse across the animal kingdom. Clarifying the molecular mechanisms involved in the formation of these structure helps to elucidate the process of organogenesis. Turing-type reaction-diffusion mechanisms have been shown to play a critical role in regulating periodic patterning in organogenesis. Palatal rugae are periodically patterned ridges situated on the hard palate of mammals. We have previously shown that the palatal rugae develop by a Turing-type reaction-diffusion mechanism, which is reliant upon Shh (as an inhibitor) and Fgf (as an activator) signaling for appropriate organization of these structures. The disturbance of Shh and Fgf signaling lead to disorganized palatal rugae. However, the mechanism itself is not fully understood. Here we found that Lrp4 (transmembrane protein) was expressed in a complementary pattern to Wise (a secreted BMP antagonist and Wnt modulator) expression in palatal rugae development, representing Lrp4 expression in developing rugae and Wise in the inter-rugal epithelium. Highly disorganized palatal rugae was observed in both Wise and Lrp4 mutant mice, and these mutants also showed the downregulation of Shh signaling, which was accompanied with upregulation of Fgf signaling. Wise and Lrp4 are thus likely to control palatal rugae development by regulating reaction-diffusion mechanisms through Shh and Fgf signaling. We also found that Bmp and Wnt signaling were partially involved in this mechanism.
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Affiliation(s)
- Maiko Kawasaki
- Division of Oral Anatomy, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- Centre for Craniofacial Development and Regeneration, Dental Institute, King's College London, Guy's Hospital, London, United Kingdom
| | - Katsushige Kawasaki
- Division of Oral Anatomy, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- Centre for Craniofacial Development and Regeneration, Dental Institute, King's College London, Guy's Hospital, London, United Kingdom
- Research Center for Advanced Oral Science, Department of Oral Life Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Fumiya Meguro
- Division of Oral Anatomy, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Akane Yamada
- Division of Oral Anatomy, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Ryuichi Ishikawa
- Division of Oral Anatomy, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Thantrira Porntaveetus
- Centre for Craniofacial Development and Regeneration, Dental Institute, King's College London, Guy's Hospital, London, United Kingdom
| | - James Blackburn
- Centre for Craniofacial Development and Regeneration, Dental Institute, King's College London, Guy's Hospital, London, United Kingdom
| | - Yoko Otsuka-Tanaka
- Centre for Craniofacial Development and Regeneration, Dental Institute, King's College London, Guy's Hospital, London, United Kingdom
| | - Naoaki Saito
- Division of Oral Anatomy, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masato S. Ota
- Laboratory of Food Biological Science, Department of Food and Nutrition, Japan Women’s University, Bunkyo, Japan
| | - Paul T. Sharpe
- Centre for Craniofacial Development and Regeneration, Dental Institute, King's College London, Guy's Hospital, London, United Kingdom
| | - John A. Kessler
- Department of Neurology, Northwestern University, Feinberg Medical School, Chicago, IL, United States of America
| | - Joachim Herz
- Department of Molecular Genetics, UT Southwestern Medical Center, Dallas, United States of America
| | - Martyn T. Cobourne
- Centre for Craniofacial Development and Regeneration, Dental Institute, King's College London, Guy's Hospital, London, United Kingdom
| | - Takeyasu Maeda
- Division of Oral Anatomy, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- Research Center for Advanced Oral Science, Department of Oral Life Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Atsushi Ohazama
- Division of Oral Anatomy, Department of Oral Biological Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- Centre for Craniofacial Development and Regeneration, Dental Institute, King's College London, Guy's Hospital, London, United Kingdom
- * E-mail:
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Porntaveetus T, Theerapanon T, Srichomthong C, Shotelersuk V. Cole-Carpenter syndrome in a patient from Thailand. Am J Med Genet A 2018; 176:1706-1710. [DOI: 10.1002/ajmg.a.40358] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 05/22/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit; Department of Physiology, Faculty of Dentistry, Chulalongkorn University; Bangkok Thailand
| | - Thanakorn Theerapanon
- Excellence Center in Regenerative Dentistry, Faculty of Dentistry; Chulalongkorn University; Bangkok Thailand
| | - Chalurmpon Srichomthong
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine; Chulalongkorn University; Bangkok Thailand
- Excellence Center for Medical Genetics; King Chulalongkorn Memorial Hospital, the Thai Red Cross Society; Bangkok Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine; Chulalongkorn University; Bangkok Thailand
- Excellence Center for Medical Genetics; King Chulalongkorn Memorial Hospital, the Thai Red Cross Society; Bangkok Thailand
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Nowwarote N, Theerapanon T, Osathanon T, Pavasant P, Porntaveetus T, Shotelersuk V. Amelogenesis imperfecta: A novel FAM83H mutation and characteristics of periodontal ligament cells. Oral Dis 2018; 24:1522-1531. [PMID: 29949226 DOI: 10.1111/odi.12926] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 06/14/2018] [Accepted: 06/21/2018] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To delineate orodental features, dental mineral density, genetic aetiology and cellular characteristics associated with amelogenesis imperfecta (AI). MATERIALS AND METHODS Three affected patients in a family were recruited. Whole-exome sequencing was used to identify mutations confirmed by Sanger sequencing. The proband's teeth were subjected for mineral density analysis by microcomputerised tomography and characterisation of periodontal ligament cells (PDLCs). RESULTS The patients presented yellow-brown, pitted and irregular enamel. A novel nonsense mutation, c.1261G>T, p.E421*, in exon 5 of the FAM83H was identified. The mineral density of the enamel was significantly decreased in the proband. The patient's PDLCs (FAM83H cells) exhibited reduced ability of cell proliferation and colony-forming unit compared with controls. The formation of stress fibres was remarkably present. Upon cultured in osteogenic induction medium, FAM83H cells, at day 7 compared to day 3, had a significant reduction of BSP, COL1 and OCN mRNA expression and no significant change in RUNX2. The upregulation of ALP mRNA levels and mineral deposition were comparable between FAM83H and control cells. CONCLUSIONS We identified the novel mutation in FAM83H associated with autosomal dominant hypocalcified AI. The FAM83H cells showed reduced cell proliferation and expression of osteogenic markers, suggesting altered PDLCs in FAM83H-associated AI.
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Affiliation(s)
- Nunthawan Nowwarote
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thanakorn Theerapanon
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thanaphum Osathanon
- Department of Anatomy, Faculty of Dentistry, Excellence Center in Regenerative Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Prasit Pavasant
- Department of Anatomy, Faculty of Dentistry, Excellence Center in Regenerative Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Thantrira Porntaveetus
- Genomics and Precision Dentistry Research Unit, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Vorasuk Shotelersuk
- Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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50
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Intarak N, Theerapanon T, Ittiwut C, Suphapeetiporn K, Porntaveetus T, Shotelersuk V. A novel PITX2 mutation in non-syndromic orodental anomalies. Oral Dis 2018; 24:611-618. [PMID: 29121437 DOI: 10.1111/odi.12804] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 11/01/2017] [Accepted: 11/02/2017] [Indexed: 01/28/2023]
Abstract
OBJECTIVE To identify orodental characteristics and genetic aetiology of a family affected with non-syndromic orodental anomalies. SUBJECTS AND METHODS Physical and oral features were characterised. DNA was collected from an affected Thai family. Whole-exome sequencing was employed to identify the pathogenic variants associated with inherited orodental anomalies. The presence of the identified mutation was confirmed by Sanger sequencing. RESULTS We observed unique orodental manifestations including oligodontia, retained primary teeth, taurodont molars, peg-shaped maxillary central incisors, high attached frenum with nodule and midline diastema in the proband and her mother. Mutation analyses revealed a novel heterozygous frameshift deletion, c.573_574delCA, p.L193QfsX5, in exon 5 of PITX2A in affected family members. The amino acid alterations, localised in the transcriptional activation domain 2 in the C-terminus of PITX2, were evolutionarily conserved. Mutations in PITX2 have been associated with autosomal-dominant Axenfeld-Rieger syndrome and non-syndromic eye abnormalities, but never been found to cause isolated oral anomalies. CONCLUSIONS This study for the first time demonstrates that the PITX2 mutation could lead to non-syndromic orodental anomalies in humans. We propose that the specific location in the C-terminal domain of PITX2 is exclusively necessary for tooth development.
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Affiliation(s)
- N Intarak
- Craniofacial Genetics and Stem Cells Research Group, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - T Theerapanon
- Excellence Center in Regenerative Dentistry, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - C Ittiwut
- Center of Excellence for Medical Genetics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
| | - K Suphapeetiporn
- Center of Excellence for Medical Genetics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
| | - T Porntaveetus
- Craniofacial Genetics and Stem Cells Research Group, Department of Physiology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - V Shotelersuk
- Center of Excellence for Medical Genetics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Excellence Center for Medical Genetics, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand
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